CN110548634A

CN110548634A - Four-channel fiber spraying and curing assembly line based on robot

Info

Publication number: CN110548634A
Application number: CN201910808804.7A
Authority: CN
Inventors: 张有为; 胡成龙; 林雪芬; 张闪
Original assignee: Foshan Jinze Zhisheng Intelligent Technology Co Ltd
Current assignee: Foshan Jinze Zhisheng Intelligent Technology Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2019-12-10
Anticipated expiration: 2039-08-29
Also published as: CN110548634B

Abstract

The invention discloses a robot-based four-channel fiber spraying and curing assembly line.A drying oven is internally provided with two groups of conveying lines comprising third chain conveyors which are arranged up and down, a first liftable belt conveyor is arranged corresponding to each group of conveying lines, and a bathtub is conveyed for each third chain conveyor; a fiber spraying working line consisting of three first chain conveyors and a spraying robot which are connected in series is arranged corresponding to each first belt conveyor, a second chain conveyor which is vertically connected with the inlet side of the fiber spraying working line is arranged at the inlet side of the fiber spraying working line, and a second belt conveyor which can be lifted is arranged corresponding to each fiber spraying working line on the second chain conveyor; the second chain conveyor conveys the bathtub for two fiber spraying working lines, and the bathtub is conveyed to the oven by the first belt conveyor after the fiber spraying treatment is finished. A blocking cylinder, a travel switch and a proximity switch are arranged to control and detect the position of the bathtub during transportation; the invention has novel design and high intelligent degree, greatly improves the curing treatment capacity of the sprayed fiber and improves the space utilization rate.

Description

Four-channel fiber spraying and curing assembly line based on robot

Technical Field

the invention belongs to the technical field of bathtub manufacturing equipment, and particularly relates to a four-channel fiber spraying and curing assembly line based on a robot.

Background

with the daily improvement of living standard of people, the bathtub becomes the necessary equipment for bathing in the toilet. At present, the bathtub made of an acrylic material is commonly used, and the acrylic material is an organic plate (or called as glass fiber reinforced plastic material) and is widely applied.

However, in the manufacturing process of the acrylic bathtub, the rigidity of the acrylic bathtub needs to be enhanced, so a layer of resin glass fiber is often sprayed on the back surface of the molded acrylic bathtub body, and then the resin glass fiber is heated and cured, so that the rigidity of the bathtub body is improved to the required rigidity. However, the problem that the surface of the cylinder body is deformed due to the gravity of the resin and the glass fiber sprayed on the cylinder body easily occurs in the fiber spraying process, so that the high-quality product has low qualification rate. At present, a fiber spraying and curing production line with the advantages of high space utilization rate, large treatment capacity, good product quality, high yield and the like is not designed in the bathtub industry.

It is seen that improvements and enhancements to the prior art are needed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a robot-based four-channel fiber spraying and curing assembly line which has the advantages of high automation degree, strong practicability and reliability, high yield, good quality of bathtub products and high space utilization rate.

in order to achieve the purpose, the invention adopts the following technical scheme:

A four-channel fiber spraying and curing assembly line based on a robot comprises a fiber spraying working line, a drying oven and a second chain conveyor, wherein the fiber spraying working line consists of three first chain conveyors and a spraying robot for resin fiber spraying which are sequentially connected; the spraying robot is arranged on one side of the first chain conveyor in the middle; the bathtub comprises a bathtub body, a control device, a blocking cylinder and a travel switch, wherein the bathtub body also comprises a support plate, an auxiliary support frame for supporting the bathtub, the control device, the blocking cylinder and the travel switch;

Two groups of conveying lines are horizontally arranged in the oven, and each group of conveying lines comprises two third chain conveyors which are arranged up and down; the oven is provided with a lifting door body corresponding to the inlet side and the outlet side of each third chain conveyor inside the oven; a first liftable belt conveyor is arranged corresponding to each group of conveying lines, and a fiber spraying working line is correspondingly arranged at the inlet side of each first belt conveyor;

The first chain conveyor and the third chain conveyor are sequentially provided with a plurality of blocking cylinders along the conveying direction of the first chain conveyor and the third chain conveyor, and a travel switch is arranged at the rear side corresponding to each blocking cylinder; the first chain conveyor in the middle is provided with a fiber spraying workbench which can be lifted and rotated and is positioned on the rear side of the blocking cylinder, and the top surface of the fiber spraying workbench is provided with a guide post;

The first belt conveyor is provided with two travel switches along the conveying direction;

The second chain conveyor is arranged at the inlet side of the fiber spraying working line and is vertically connected with the fiber spraying working line; the second chain conveyor is provided with a second belt conveyor capable of lifting and a proximity switch corresponding to each fiber spraying working line, and a blocking cylinder is arranged on the front side of the second belt conveyor;

the carrier plate is correspondingly provided with an opening through which the guide column passes, and the front end and the left end of the carrier plate are provided with trapezoidal openings connected with a stop rod of the stop cylinder;

The auxiliary support frame comprises a support seat which is consistent with the shape of the bathtub and used for supporting the bathtub and a support which is positioned below the support seat and arranged on the support plate, and reinforcing ribs are fixed on the inner side surface and the inner top surface of the support seat; a reinforcing frame positioned below the reinforcing ribs is fixed on the inner top surface of the supporting seat; the outer top surface of the supporting seat is provided with a buffer layer; a frame is fixed at the bottom of the supporting seat, and the frame is provided with a supporting piece connected with the reinforcing frame; the frame is detachably connected with the bracket;

the control device is respectively and electrically connected with the spraying robot, the first chain conveyor, the second chain conveyor, the third chain conveyor, the proximity switch, the first belt conveyor, the second belt conveyor, the oven, the door body, the blocking cylinder, the travel switch and the fiber spraying workbench.

The four-channel fiber spraying and curing assembly line based on the robot further comprises a steam generator and a resin stirrer; the resin stirrer is provided with a stirring chamber for storing resin and a steam chamber which is positioned at the periphery of the stirring chamber and is convenient for heat transfer between steam and the resin; the steam outlet of the steam generator is communicated with the steam chamber, and the steam chamber is provided with a steam discharge port; the stirring chamber is internally provided with a temperature sensor, a stirring rod for stirring resin and a driving mechanism for driving the stirring rod to work, and is provided with a resin feeding hole and a resin discharging hole connected with the spraying robot; the steam generator, the resin stirrer and the temperature sensor are respectively and electrically connected to the control device.

In the four-channel fiber spraying and curing assembly line based on the robot, the resin feed port is provided with a rotatable turnover cover for sealing the resin feed port.

In the four-channel fiber spraying and curing assembly line based on the robot, the stirring chamber is cylindrical, and the steam chamber is annular and cylindrical; the steam discharge port is arranged at the top of the steam chamber; the steam outlet is connected to the bottom of the steam chamber through a pipeline; the resin discharge port is arranged at the bottom of the stirring chamber.

The four-channel fiber spraying and curing assembly line based on the robot further comprises a buzzer, a broken yarn detector, a glass fiber support arranged on one side of the spraying robot, and a plurality of guide components for guiding glass fiber bundles; the broken yarn detector and the plurality of guide components are respectively arranged on the glass fiber bracket; the glass fiber bundle sequentially passes through the guide part, the eyelet of the broken yarn detector and the guide part to be connected to the spraying robot; the buzzer and the broken yarn detector are respectively and electrically connected to the control device.

In the robot-based four-channel fiber spraying and curing assembly line, the guide part comprises a fixed frame and a guide ring arranged on the fixed frame; the guide ring is mounted on the fixed frame through bolts; the fixing frame is welded or fixed on the glass fiber bracket by bolts; the guide ring is made of plastic; the glass fiber support comprises an underframe, a vertical support rod fixed on the underframe, a cross rod fixed on the top of the vertical support rod and an inclined support rod, wherein two ends of the inclined support rod are respectively connected with the vertical support rod and the cross rod; the fixing frames are respectively and fixedly connected with the cross rod and the vertical supporting rod, and the broken yarn detector is fixed on the inclined supporting rod and positioned between the two fixing frames; and a fixing frame which is obliquely arranged is arranged at the joint between the supporting vertical rod and the cross rod.

In the four-channel fiber spraying and curing assembly line based on the robot, first protection plates are respectively arranged on the outer sides of the first belt conveyor, the third chain conveyor and the first chain conveyor positioned on the front side and the rear side, and first protection plates positioned on the front side and the rear side of the fiber spraying workbench are arranged on the outer side of the first chain conveyor positioned in the middle; second protection plates are respectively arranged on the outer sides of the second chain conveyors; the distance between the two first protection plates and the two second protection plates is larger than or equal to the width of the support plate, and the top surfaces of the first protection plates and the second protection plates are higher than the top surface of the support plate; the carrier plate is a square plate.

In the four-channel fiber spraying and curing assembly line based on the robot, a groove in sliding connection with the support plate is formed in the inner side surface of the first protection plate.

In the four-channel fiber spraying and curing assembly line based on the robot, the reinforcing ribs are wood bars and are uniformly arranged at intervals; the reinforcing frame consists of two parallel top plates and two parallel bottom plates, and the top plates are vertically connected with the bottom plates; the top surface of the top plate is connected with the reinforcing rib positioned on the inner top surface of the supporting seat; the frame is made of metal; the supporting piece comprises a supporting ejector rod and a vertical rod, the bottom of the vertical rod is fixed to the frame, the top of the vertical rod is fixed to the bottom of the supporting ejector rod, and the top of the supporting ejector rod is fixed to the reinforcing frame; the support is provided with a supporting cross rod with a triangular cross section, and the frame is correspondingly provided with a connecting rod which is inosculated with the supporting cross rod and is erected on the supporting cross rod.

In the robot-based four-channel fiber spraying and curing assembly line, the first belt conveyor and the second belt conveyor respectively comprise a driving shaft and a driven shaft which are rotatably arranged on the base, a conveying belt for conveying the support plate and a driving mechanism for driving the driving shaft to rotate; belt pulleys are respectively fixed at two ends of the driving shaft and the driven shaft, and the conveying belt is wound on the belt pulleys of the driving shaft and the driven shaft; the base is provided with a plurality of rotatable supporting rollers which are abutted with the inner side surface of the conveying belt.

Has the advantages that:

The invention provides a robot-based four-channel fiber spraying and curing assembly line which has the advantages of high automation degree, strong practicability and reliability, high yield, good quality of bathtub products and high space utilization rate.

The auxiliary support frame with a special structure is used for stably supporting the bathtub which is just formed, powerful support is provided for the inner top surface and the inner side surface of the bathtub, and the surface of the bathtub is prevented from deforming due to the gravity of resin and glass fiber. In addition, a plurality of blocking cylinders and travel switches are arranged on the first chain conveyor and the third chain conveyor and used for stopping the carrier plate loaded with the auxiliary supporting frame, so that the bathtubs are conveyed on the first chain conveyor and the third chain conveyor in a well-ordered manner, high-efficiency and high-quality fiber spraying work is completed, the damage caused by collision among the bathtubs in the conveying process is avoided, and the yield is low. And the second chain conveyor is provided with a blocking cylinder, a proximity switch and a second liftable belt conveyor, so that each fiber spraying working line is respectively conveyed with a bathtub. In addition, four third chain conveyors are arranged in the oven, and the first liftable belt conveyor conveys the sprayed fiber bathtub to each third chain conveyor in the oven, so that the processing capacity of the assembly line is greatly improved, the occupied area is reduced, and the space utilization rate is improved.

Drawings

Fig. 1 is a plan view of a robot-based four-channel fiber spraying and curing line provided by the invention.

Fig. 2 is a plan view of a fiber spraying working line in the robot-based four-channel fiber spraying curing assembly line provided by the invention.

fig. 3 is a structural top view of a second chain conveyor in the robot-based four-channel fiber spraying and curing assembly line provided by the invention.

Fig. 4 is a perspective view of the structure of an oven and a first belt conveyor in the robot-based four-channel fiber spraying and curing assembly line provided by the invention.

Fig. 5 is a perspective view of the structure of the first chain conveyor at the front side in the robot-based four-channel fiber spraying and curing line provided by the invention.

Fig. 6 is a perspective view of the structure of a first chain conveyor in the middle of the four-channel fiber spraying and curing assembly line based on the robot provided by the invention.

Fig. 7 is a perspective view of a first belt conveyor in the robot-based four-channel fiber spraying and curing assembly line provided by the invention.

Fig. 8 is a schematic diagram of the internal structure of an oven in the robot-based four-channel fiber spraying and curing assembly line provided by the invention.

Fig. 9 is a working principle diagram of a door body in the robot-based four-channel fiber spraying and curing assembly line.

FIG. 10 is a schematic diagram of the structure of a steam generator and a resin stirrer in the robot-based four-channel fiber spraying and curing line provided by the invention.

Fig. 11 is a schematic structural diagram of an auxiliary support frame in the robot-based four-channel fiber spraying and curing assembly line provided by the invention.

Fig. 12 is a schematic structural diagram of an auxiliary support frame in the robot-based four-channel fiber spraying curing line provided by the invention.

Fig. 13 is a working principle diagram of a fiber spraying worktable in the robot-based four-channel fiber spraying and curing assembly line provided by the invention.

FIG. 14 is a schematic structural diagram of a broken yarn detector and a guide component on a glass fiber support in a robot-based four-channel fiber spraying curing line provided by the invention.

Fig. 15 is a perspective view of a guide component in a robot-based four-channel fiber spraying and curing assembly line provided by the invention.

Detailed Description

The invention provides a four-channel fiber spraying and curing assembly line based on a robot, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The conveying direction of the first chain conveyor is taken as the positive direction. Fig. 2, 5 and 6 only show that one blocking cylinder and one travel switch are provided on the first chain conveyor, and the length of the first chain conveyor can be set longer and then a plurality of blocking cylinders and travel switches are provided according to actual needs.

Referring to fig. 1, 2, 3, 5, 6, 7, 8 and 11, the present invention provides a robot-based four-channel fiber spraying curing line, which includes a fiber spraying line composed of three first chain conveyors and a spraying robot 2 for resin fiber spraying, an oven 16, and a second chain conveyor 14, which are connected in sequence. The three first chain conveyors are respectively a first chain conveyor 11 positioned at the front side, a first chain conveyor 12 positioned in the middle and a first chain conveyor 13 positioned at the rear side in the three first chain conveyors connected in series; the painting robot 2 is provided on the side of the first chain conveyor 12 located in the middle.

The robot-based four-channel fiber spraying and curing assembly line further comprises a carrier plate 3, an auxiliary support frame 8 for supporting a bathtub, a control device (not shown in the figure), a blocking cylinder and a travel switch; the control device may be, but is not limited to, a PLC controller.

As shown in fig. 4 and 8, two groups of conveying lines are horizontally arranged inside the oven 16, and each group of conveying lines includes two third chain conveyors 163 arranged up and down; the oven 16 is provided with a liftable door body, namely the door body 162 and the door body 161, corresponding to the inlet side and the outlet side of each third chain conveyor 163 inside the oven 16, respectively, and the door body 162 and the door body 161 are correspondingly opened when the bathtub is conveyed into the oven 16 or the bathtub is conveyed out of the oven 16. A liftable first belt conveyor 15 is arranged corresponding to each group of conveying lines, and a fiber spraying working line is correspondingly arranged at the inlet side of each first belt conveyor 15. Wherein the first chain conveyor 11, the first chain conveyor 12, the first chain conveyor 13, the second chain conveyor 14, and the third chain conveyor 163 are identical in structure.

The oven 16 is provided with four third chain conveyors 163, which are divided into two groups of conveyor lines (including two third chain conveyors 163 arranged in parallel up and down), and the third chain conveyor 163 located above is stably supported by a bracket 164. The outlet end of the first belt conveyor 15 is correspondingly connected with the inlet end of each group of conveyor lines, so that the first belt conveyor conveys bathtubs for each group of conveyor lines. Specifically, the door body is made of transparent glass. In addition, a door is arranged corresponding to each third chain conveyor 163 in the oven 16, wherein the door 162 is arranged on the third chain conveyor 163 located above, the door 161 is arranged on the third chain conveyor 163 located below, the door 161 and the door 162 can slide up and down relative to the oven, and the oven 16 is provided with a slide rail connected with the door in a sliding manner. Through the setting of slide rail, carry on spacingly to the door body, let the door body can only reciprocate along the slide rail. In this embodiment, as shown in fig. 9, the door body can be lifted by a driving device, which includes a telescopic cylinder 1614, a sprocket and a chain 1612. The both ends of chain 1612 are fixed in the top both sides of the door body 161 respectively, then set up telescopic cylinder 1614, and telescopic cylinder 1614's piston rod fixedly connected with movable sprocket 1613, and chain 1612 is connected with the meshing of movable sprocket 1613, simultaneously, is fixed with rotatable fixed sprocket 1611 at oven 16, and chain 1612 all is connected with the meshing of fixed sprocket 1611. When the door body 161 needs to be opened, the telescopic cylinder 1614 works, a piston rod of the telescopic cylinder 1614 retracts to drive the movable chain wheel 1613 to move downwards, the movable chain wheel 1613 drags the chain 1612 to move, and the chain 1612 applies pulling force to the door body 161 to enable the door body to move upwards; conversely, the telescopic cylinder 1614 drives the movable sprocket 1613 to move upwards, and the door 161 moves downwards due to its own weight. In addition, the door 162 is connected to the driving device. Of course, the telescopic air cylinders can be fixedly connected to two sides of each door body, and the opening and closing of each door body can be controlled independently through the working of the telescopic air cylinders.

As shown in fig. 4 and 7, the first belt conveyor 15 includes a driving shaft and a driven shaft rotatably provided on the base 151 via bearings, a conveyor belt 156 for conveying a carrier sheet, and a driving mechanism for driving the driving shaft to rotate; belt pulleys are respectively fixed at two ends of the driving shaft and the driven shaft, and the conveying belt 156 is wound on the belt pulleys of the driving shaft and the driven shaft; the base 151 is provided with a plurality of support rollers 157 which are rotatable and abut against the inner side surface of the conveyor belt 156. The first belt conveyor 15 is provided with two stroke switches, a stroke switch 158 and a stroke switch 159, respectively, in its conveying direction. In this embodiment, the driving mechanism is a motor, which drives the driving shaft to rotate through a chain, so as to drive the conveying belt 156 to work. And, the supporting roller 157 rotates according to even interval and establishes in the lateral surface of base 151, contacts with conveyor belt 156's medial surface for support conveyor belt, provide effectual holding power, avoid conveyor belt to appear the fracture because of the too big gravity of bathtub body, thereby make conveyor belt can steadily carry the cylinder body fast for a long time.

The base 151 of the first belt conveyor 15 is provided at the bottom thereof with a lifting mechanism, which may be a fixed hydraulic lifter; in this embodiment, the lifting mechanism includes an X-shaped bracket 152, a telescopic cylinder 153 for driving the X-shaped bracket 152 to be supported, and a base 154 fixed on the ground. The X-shaped bracket 152 is connected to the base 151 and the base 154, and is folded by the telescopic cylinder 153, so that the first belt conveyor 15 is lifted.

As shown in fig. 2, 5, 6, 8 and 13, the first chain conveyor 11, the first chain conveyor 12 and the first chain conveyor 13 are each provided with a plurality of barrier cylinders 4 in sequence along the conveying direction thereof, and a stroke switch 5 is provided corresponding to the rear side of each barrier cylinder 4; the first chain conveyor 12 in the middle is provided with a fiber spraying workbench 123 which can rotate in a lifting manner and is positioned at the rear side of the blocking cylinder 4, and the top surface of the fiber spraying workbench 123 is provided with a guide column 124. In this embodiment, the fiber spraying worktable 123 is a cylinder, and the bottom of the fiber spraying worktable 123 is fixed with a telescopic cylinder 125, the bottom of the telescopic cylinder 125 is fixed with a support plate 127, the support plate 127 is fixed on an outer ring 129 of the slewing bearing, and an inner ring 128 of the slewing bearing is fixed on a fixed support (not shown in the figure); a motor 126 is arranged to drive the outer ring 129 of the slewing bearing to rotate, the motor 126 can be fixed on the fixed support, the motor 126 works to drive the outer ring 129 of the slewing bearing to rotate, and then the fiber spraying workbench 123 rotates, and the telescopic cylinder 125 works to realize the lifting of the fiber spraying workbench 123. Likewise, the third chain conveyor 163 is provided with the blocking cylinder 4 and the stroke switch 5 in the same manner as the first chain conveyor 11.

As shown in fig. 1 and 3, the second chain conveyor 14 is disposed at the inlet side of the fiber spraying working line and vertically connected thereto; the second chain conveyor 14 is provided with a second belt conveyor 141 and a proximity switch 142 which can be lifted and lowered corresponding to each fiber spraying working line, and a blocking cylinder 143 is provided at the front side of the second belt conveyor 141.

The structure of the second belt conveyor 141 is the same as that of the first belt conveyor 15, and the second belt conveyor 141 also comprises a driving shaft and a driven shaft which are rotatably arranged on the base, a conveying belt for conveying the carrier plate, and a driving mechanism for driving the driving shaft to rotate; belt wheels are respectively fixed at two ends of the driving shaft and the driven shaft, and the conveying belt is wound on the belt wheels of the driving shaft and the driven shaft; the base is provided with a plurality of rotatable supporting rollers which are abutted with the inner side surface of the conveying belt.

as shown in fig. 3 and 5, the carrier plate 3 is correspondingly provided with an opening 32 suitable for the guide post 124 to pass through, and the front end and the left end of the carrier plate 3 are provided with trapezoidal openings 31 connected with the stop rod of the stop cylinder 4. Since the carrier plate 3 is transferred from the second chain conveyor 14 to the fiber spraying working line, the carrier plate can complete 90-degree transfer without rotating, trapezoidal openings 31 are arranged at the front end and the left end of the carrier plate, when the carrier plate is connected with the blocking rod of the blocking cylinder, the blocking rod is arranged at the trapezoidal openings to play a role in guiding, positioning and blocking, and certainly, the trapezoidal openings can also be arranged at the rear end and the right end of the carrier plate. When the carrier plate moves to the blocking cylinder 4 located at the front side of the fiber spraying workbench 123, the carrier plate cannot continue to advance due to the blocking effect of the blocking cylinder 4, then the piston rod of the telescopic cylinder 125 extends to lift the fiber spraying workbench 123, and in the lifting process, the guide column 124 penetrates through the opening 32 of the carrier plate 3, so that the fiber spraying workbench 123 jacks up the carrier plate 3. The spraying robot stops after rising to a certain height, then the spraying robot starts working, in the spraying work, the bathtub needs to rotate for a certain angle, then the motor 126 works to drive the fiber spraying workbench to rotate along with the telescopic cylinder, so that the support plate rotates along with the bathtub, and due to the arrangement of the guide posts and the opening holes, the support plate is still relatively to the fiber spraying workbench all the time in the rotating process. After the spraying is finished, the motor works to rotate the support plate to the original position, and the telescopic cylinder descends the support plate to the original height, so that the chain conveyor can continuously convey the support plate.

As shown in fig. 11 and 12, the auxiliary support frame 8 includes a support seat 81 conforming to the shape of the bathtub and supporting the bathtub, and a bracket 82 located below the support seat 81 and placed on the carrier plate 3. In this embodiment, the shape of the support 81 is the same as the shape of the bathtub to be produced, and the bathtub is turned upside down and directly fitted over the support 81. The support 81 is made of the same material as the bathtub.

Reinforcing ribs 811 are fixed on the inner side surface and the inner top surface of the supporting seat 81; a reinforcing frame positioned below the reinforcing rib 811 is fixed to the inner top surface of the supporting seat 81. The strengthening ribs 811 are battens and are evenly spaced.

The reinforcing frame consists of two parallel top plates 814 and two parallel bottom plates 815, wherein the top plates 814 are vertically connected with the bottom plates 815; the top surface of the top plate 814 is connected to the rib 811 located on the inner top surface of the support base 81. In order to enhance the strength of the supporting seat 81, a plurality of reinforcing ribs 811 are fixed on the inner side surface of the supporting seat, and the long and straight reinforcing ribs are stably fixed by resin or other adhesives, so that the surface of the supporting seat 81 can be kept flat and non-concave, and the inner side surface of the supporting seat is prevented from being sunken. In addition, a plurality of reinforcing ribs 811 are fixed on the inner top surface of the supporting seat 81, and the long and straight reinforcing ribs are also stably fixed by resin or other adhesives, so that the surface can be kept flat and non-concave, and the inner top surface of the supporting seat is prevented from being sunken.

The outer top surface of the supporting seat 81 is provided with a buffer layer 813, and the buffer layer 813 can be one of sponge, linen and polypropylene fabric. In this embodiment, sponge, linen, polypropylene fabric can be directly placed on the top surface of the supporting base 81. They can of course also be firmly fixed to the outer top surface of the support base by means of an adhesive. The outer top surface of the supporting seat is provided with a buffer layer, the top surface of the buffer layer is contacted with the inner top surface of the bathtub, and the thickness of the buffer layer is in the range of 5-15 mm in the embodiment. When the bathtub is sleeved on the supporting seat 81 and fiber spraying reinforcement treatment is carried out, glass fibers and resin are sprayed to the back of the bathtub, and although the influence of gravity of the glass fibers and the resin exists, due to the effect of the supporting seat, the back of the bathtub cannot be sunken, and the good appearance can be kept in the whole fiber spraying reinforcement process. Particularly, the outer top surface of the bathtub is not easy to be inwards concave under the influence of the gravity of the glass fiber and the resin due to the support of the buffer layer.

A frame 812 is fixed at the bottom of the supporting seat 81, and the frame 812 is provided with a supporting member connected with the reinforcing frame; the supporting piece comprises a supporting top rod 816 and a vertical rod 817, the bottom of the vertical rod 817 is fixed on the frame 812, the top of the vertical rod 817 is fixed on the bottom of the supporting top rod 816, and the top of the supporting top rod 816 is fixed on the reinforcing frame. The supporting top rods 816 and the vertical rods 817 are made of metal materials and are square rods. In this embodiment, frame 812, support ram 816, and vertical bar 817 are made of stainless steel or iron. The support bar 816 and the vertical bar 817 are fixed by welding, and the vertical bar 817 is welded to the frame 812. And the support bar 816 may be connected to the bottom plate 815 of the reinforcing frame by a screw or resin. The reinforcing frame is forcibly supported by the supporting part to increase the supporting strength of the top surface of the supporting seat, so that the top surface of the supporting seat is prevented from sinking due to the fact that the top surface of the bathtub is influenced by the gravity of glass fiber and resin, and the top surface of the bathtub (the top surface after the bathtub is overturned) cannot be effectively supported.

the frame 812 is removably connected to the bracket 82. The frame 812 is made of metal and can be fixed to the support base 81 by an adhesive such as a screw, a bolt, or resin. In this embodiment, the bracket 82 is provided with a cross-section of a triangular support rail 821, and the frame 812 is correspondingly provided with a connecting rod 818 which is matched with the support rail 821 and is erected on the support rail 821. In order to avoid the obstruction of the bathtub in the conveying process, the support 82 is required to be used for cushioning the support seat 81, for the sake of simplicity and convenience, two support cross rods 821 made of metal are fixed on the support 82, correspondingly, a connecting rod 818 made of metal is fixed on the frame 812, the cross section of the connecting rod is in an inverted V shape and is matched with the support cross rods, when the frame is directly placed on the support cross rods 821 of the support 82 through the connecting rod 818 arranged on the frame, the support seat can be prevented from easily moving relative to the support along the conveying direction, and the support seat are separated, so that the bathtub is broken.

Further, as shown in fig. 7, first protection plates 155 are respectively disposed on the outer sides of the first belt conveyors 15, the distance between the two first protection plates 155 is greater than or equal to the width of the carrier plate 3, and the top surfaces of the first protection plates 155 are higher than the top surface of the carrier plate 3. As shown in fig. 5, first protection plates 111 are respectively disposed on the outer sides of the first chain conveyors 11 located on the front side, the distance between the two first protection plates 111 is greater than or equal to the width of the carrier plate 3, and the top surfaces of the first protection plates 111 are higher than the top surface of the carrier plate 3. As shown in fig. 6, first protection plates 121 are disposed on the front and rear sides of the fiber spraying workbench 123 at the outer side of the middle chain conveyor 12, the distance between the two first protection plates 121 is greater than or equal to the width of the carrier plate 3, and the top surface of the first protection plate 121 is higher than the top surface of the carrier plate 3. Like the first belt conveyor 15 and the first chain conveyor 11, first protection plates are respectively arranged on the outer sides of the first chain conveyor 13 and the third chain conveyor 163 on the rear side, the distance between the two first protection plates is greater than or equal to the width of the support plate 3, and the top surfaces of the first protection plates are higher than the top surface of the support plate 3. Similarly, as shown in fig. 3, second protection plates 144 are respectively disposed on the outer sides of the second chain conveyors 14, the distance between the two second protection plates 144 is greater than or equal to the width of the carrier plate 3, and the top surfaces of the second protection plates 144 are higher than the top surface of the carrier plate. The carrier plate 3 is square in plan view, and is a square plate. In the present embodiment, the intervals between the first guard plates on both sides of the first belt conveyor 15, the third chain conveyor 163, the first chain conveyor 11, the first chain conveyor 12, and the first chain conveyor 13 are uniform. The arrangement of first guard plate and second guard plate plays spacing, guide effect, can avoid the support plate to drop from first band conveyer, third chain conveyor, first chain conveyor, second chain conveyor, and more importantly guarantees that the support plate can remove along direction of delivery always in proper order, prevents that it from taking place the skew so that the support plate blocks on the horizontal plane, pipeline trouble appears.

In addition, the inner side surface of the first protection plate 121 is provided with a groove 122 slidably connected with the support plate 3, the inner side surface of the first protection plate 111 is provided with a groove 112 slidably connected with the support plate 3, and the inner side surface of the first protection plate 155 is provided with a groove 1551 slidably connected with the support plate 3. Likewise, the first guard plate of the third chain conveyor 163 and the first guard plate of the first chain conveyor 13 are also provided with grooves. Of course, a guide wheel which can rotate and is connected with the outer side surface of the support plate can be arranged in the groove, so that the support plate can move more smoothly and stably.

As shown in fig. 14, the robot-based four-channel fiber spraying curing line further includes a buzzer (not shown), a broken yarn detector 92, a glass fiber support 91 disposed on one side of the spraying robot 2, and a plurality of guiding components 93 for guiding glass fiber bundles 94. The broken yarn detector 92 and the plurality of guide members 93 are respectively arranged on the glass fiber support 91; the glass fiber bundle 94 passes through the guide member 93, the hole of the broken yarn detector 92, and the guide member 93 in sequence to be connected to the automatic spray gun 21 of the spray robot 2. The automatic spray gun 21 has a function of automatically spraying resin and glass fibers. In the prior art, a spraying robot is applied to a bathtub manufacturing process, a spray gun is fixed on the robot, and the operation of automatically spraying resin and glass fiber is carried out by adjusting the position through rotation and swing of a mechanical arm. The main structure of the automatic spray gun is the same as that of a short-cut fiber spray gun (or called resin glass fiber spray gun) of a Gurueli brand, and the swing of a switch pressure handle of the automatic spray gun can be controlled through the telescopic action of a piston rod of a telescopic cylinder, so that the work of the automatic spray gun is controlled. In addition, the broken yarn detector 92 and the buzzer are respectively electrically connected to the control device.

The glass fiber bundle 94 drawn from the glass fiber roll 95 placed on the glass fiber holder 91 passes through the guide member 93, then passes through the hole of the yarn breakage detector 92, and is then connected to the automatic spray gun 21 through the guide member 93. Under the intelligent remote control of the control device, the spraying robot 2 starts working, and the automatic spray gun 21 is used for spraying resin and glass fibers on the bathtub. In the process, the glass fiber bundles 94 are continuously consumed, so the glass fiber bundles 94 are continuously pulled out from the glass fiber roll 95, and at the moment, the yarn breakage detector 92 detects the running condition of the glass fiber bundles 94 in real time to judge whether the glass fiber bundles 94 are stopped or broken. If the situation is the above, the control device receives the signal of the yarn breakage detector, and controls the spraying robot 2 to stop spraying, so that the situation that a large amount of resin materials are wasted due to resin spraying only and a bathtub is wasted due to incomplete fiber paving is avoided. Meanwhile, the control device controls the buzzer to work, informs workers of timely coming to process faults in a sound mode, checks whether the glass fiber rolls need to be supplemented or whether glass fiber bundles are wound inside the automatic spray gun to clamp the glass fiber cutter wheel, solves the problems, and can play a role in monitoring the fiber spraying effect due to unique design. The control device also controls the chain conveyor 12, the chain conveyor 13, and the fiber spraying table 123 to stop operating, and temporarily stops conveying the bathtub until the trouble is cleared. The buzzer can be arranged on the glass fiber support 91, and of course, an alarm lamp can be arranged on the glass fiber support 91 to inform the worker in an acousto-optic alarm mode, so that problems can be timely treated.

As shown in fig. 14 and 15, the guide member 93 includes a fixing frame 931 and a guide ring 932 provided on the fixing frame 931; the guide ring 932 is bolted to the fixed mount 931; the fixing frame 931 is welded or bolted to the glass fiber bracket 91. In this embodiment, the fixing frame 931 is a metal block with a groove, the fixing frame is provided with a through hole, one end of the guide ring 932 is fixed with a screw 934, and the guide ring 932 is fixed on the fixing frame 931 or the guide ring 932 is screwed into the fixing frame 931 through the screw 934 in a nut-screw connection mode. The guide ring 932 is provided with a guide hole 933 for allowing glass fibers (glass fiber bundles) to pass through. A plurality of guide rings 932 are fixed to the fixing frame 931 according to actual requirements.

Preferably, the guide ring 932 is made of plastic. When the glass fiber bundle 94 is pulled, the glass fiber bundle 94 not only rubs with the eyelet of the broken yarn detector 92, but also rubs with the guide hole 933 of the guide ring 932, the guide ring 932 made of plastic is adopted, and the fillet processing is carried out, so that the glass fiber bundle 94 is not easy to break in the process of rubbing with the guide ring 932, and the occurrence of faults caused by the breakage of the glass fiber bundle is reduced.

As shown in fig. 14 and 15, the glass fiber bracket 91 includes an underframe 911, a vertical support bar 912 fixed to the underframe 911 by welding or bolts, a cross bar 914 fixed to the top of the vertical support bar 912 by welding or bolts, and a diagonal support bar 913, wherein two ends of the diagonal support bar 913 are respectively connected to the vertical support bar 912 and the cross bar 914 by welding. The fixing frame 931 is fixedly connected to the cross bar 914 and the supporting vertical bar 912 by welding or bolting, and the yarn breakage detector 92 is fixed to the supporting diagonal bar 913 and located between the two fixing frames 931. In the present embodiment, one guide member 93 is fixed to the support vertical bar 912, and three guide members 93 are fixed to the cross bar 914; in addition, the fixing frame 931 of the guiding component 93 which is obliquely arranged is arranged at the connecting position between the supporting vertical rod 912 and the cross rod 914, so that the glass fiber bundle 94 can move smoothly, and cannot be wound and hooked by surrounding equipment to cause influence.

The yarn break detector 92 is a capacitive yarn break detector. In this embodiment, the eyelet of the broken yarn detector 92 is lower than the guide hole 933 of the guide member 93 on the rail 914, and in normal operation, the glass fiber bundle 94 not only clings to the guide hole 933 of the guide member 93 to rub and pass, but also clings to the eyelet of the broken yarn detector 92 uniformly with tension and speed to rub and pass, so that the broken yarn detector can not jump in the eyelet, ensure normal detection of the broken yarn detector and avoid false alarm. In the present embodiment, the yarn breakage detector 92 is a 1B-FN1 model yarn breakage detector.

As shown in fig. 2, 10 and 14, the robot-based four-channel fiber spraying curing line further includes a steam generator 7, and a resin stirrer 6 connected to the spraying robot 2, and supplying resin to an automatic spray gun 21 of the spraying robot 2. The resin stirrer 6 is provided with a stirring chamber 61 for storing resin and a steam chamber 62 located at the periphery of the stirring chamber 61 and facilitating heat transfer of steam and resin; the water inlet of the steam generator 7 is connected to a water supply pipe, and the steam outlet pipe of the steam generator 7 is connected to the steam inlet 67 and is connected to the steam chamber 62. The steam chamber 62 is provided with steam vents 68. The stirring chamber 61 is provided with a stirring rod 63 for stirring the resin and a drive mechanism 64 for driving the stirring rod 63 to operate, and the stirring chamber 61 is provided with a resin feed port 65 and a resin discharge port 66. In this embodiment, the driving mechanism 64 is a motor connected to the stirring rod 63. The resin discharge port 66 is connected to the automatic spray gun 21 of the coating robot 2 by piping. The steam generator 7 is an electrically heated steam generator. The steam generator 7 and the resin stirrer 6 are electrically connected to the control device and controlled by the control device to work.

In winter, the resin temperature is low and the steam generator 7 is started. In this embodiment, the steam generator 7 heats the water supplied from the water supply pipe to high temperature steam, and then supplies the steam to the steam chamber 62 through the steam inlet 67, and the steam in the steam chamber 62 transfers heat to the resin in the stirring chamber 61 in an indirect heat exchange manner, so that the temperature of the resin rises, the frozen resin is melted, and stirring is facilitated. The steam is then discharged to the outside through the steam discharge port 68. A metal layer with good heat conduction performance is arranged between the stirring chamber 61 and the steam chamber 62, which is beneficial to transferring a large amount of heat energy carried by the steam to the resin through the metal layer, thereby providing the utilization rate of the heat energy and reducing the loss of the energy. In addition, a temperature sensor (not shown) can be arranged in the stirring chamber 61 for detecting the temperature of the resin, and a control device is arranged for controlling the steam generator to work according to the temperature data collected by the temperature sensor, so that the temperature of the resin is maintained at about 50 ℃ in the heating process, the resin can be stirred quickly, and the problem that the resin cannot be stirred or is difficult to stir when the resin is frozen at a low temperature is solved well. And, the delivery pipe is equipped with the solenoid valve, and the equal electric connection of temperature sensor and solenoid valve is in controlling means, and controlling means passes through the resin temperature in the temperature sensor real-time detection agitator chamber, and then whether control steam generator opens work, and whether control solenoid valve is opened, toward steam generator internal transfer water, realizes real-time detection, automated management.

Specifically, the stirring chamber 61 is cylindrical, and the steam chamber 62 is annular cylindrical; a steam discharge port 68 is provided at the top of the steam chamber 62; the steam outlet is connected to the bottom of the steam chamber 62 through a pipe; the resin discharge port 66 is provided at the bottom of the stirring chamber 61. The steam supplied from the steam generator 7 enters the steam chamber 62 through the steam inlet 67 at the bottom of the steam chamber 62, transfers heat to the resin, and is finally discharged through the steam discharge ports 68 at the top of the steam chamber 62, the steam flows from the bottom to the top, and the internal heat of the resin is transferred from the bottom to the top.

Further, the resin feed port 65 is funnel-shaped, and the resin feed port 65 is provided with a turnable lid 69 for closing the resin feed port 65. The flap 69 is hinged to the resin feed port 65 to prevent further dust from entering the agitator chamber 61.

The control device is respectively and electrically connected to the spraying robot 2, the first chain conveyor 11, the first chain conveyor 12, the first chain conveyor 13, the second chain conveyor 14, the third chain conveyor 15, the proximity switch 142, the first belt conveyor 15, the second belt conveyor 141, the oven 16, the door body 161, the door body 162, the blocking cylinder 4, the travel switch 5, the blocking cylinder 143 and the fiber spraying worktable 123, and respectively controls the working states of the two.

As shown in fig. 1, 2, 3, 4, 6, 8, 11 and 13, the auxiliary support rack 8 carrying the bathtub is placed on the carrier plate 3 and moved in the conveying direction on the second chain conveyor 14; the carrier plate 3 is transferred from the second chain conveyor 14 to the first chain conveyor 13 by 90 degrees through the cooperation of the second belt conveyor 141, the proximity switch 142 and the blocking cylinder 143; then sent to the fiber spraying workbench 123 on the first chain conveyor 12 via the first chain conveyor 13 located at the rear side; on the first chain conveyor 12 located in the middle, the carrier plate 3 stops advancing due to the blocking action of the blocking cylinder 4 located on the front side of the fiber spraying workbench 123; the travel switch 5 located at the rear side of the blocking cylinder 4 generates a trigger signal due to the contact of the carrier plate 3 with it, and transmits the trigger signal to the control device. Because the travel switch 5 and the blocking cylinder 4 are close to each other, when the travel switch 5 is triggered, the carrier plate 3 is blocked by the blocking cylinder 4, and the positioning of the carrier plate is realized.

After receiving the trigger signal, the control device controls the telescopic cylinder 125 to work, so as to realize the lifting of the fiber spraying workbench 123; during the lifting process, the guiding posts 124 of the fiber spraying workbench 123 can directly penetrate through the openings 32 of the carrier plate 3 and jack up the carrier plate 3, and the carrier plate is not obstructed by the first protection plate 121 during the lifting process. Then, the control device controls the spraying robot to automatically spray the bathtub; during spraying, the control device controls the motor 126 to work, so that the bathtub can horizontally rotate to complete the omnibearing spraying of the bathtub. When spraying work is carried out, the control device controls each blocking cylinder positioned at the rear side of the fiber spraying workbench 123 to block the carrier plate, so that the situation that subsequent bathtubs continue to advance to damage the bathtubs at the fiber spraying workbench is avoided.

After the spraying is finished, the carrier plate 3 is sequentially adjusted to the original position by the motor 126 and the telescopic cylinder 125 under the control of the control device; next, the barrier cylinder located on the front side of the fiber spraying table 123 releases the bathtub that has finished spraying. Then, the control device controls each of the catch cylinders located on the rear side of the fiber spraying table 123 to allow the first chain conveyor 13 to convey the following bathtubs one by one to the fiber spraying table and finish the resin fiber spraying work one by one, thereby achieving the well-ordered bathtub spraying.

the bathtub which has finished painting continues to advance, moving from the first chain conveyor 12 to the first chain conveyor 11; then the bathtub is conveyed to a first belt conveyor 15 capable of ascending and descending, and the bathtub is continuously conveyed under the work of a conveying belt 156; when the front end of the support plate 3 carrying the bathtub touches the roller of the travel switch 158, the travel switch 158 sends a trigger signal to the control device, and the control device sends a signal for stopping conveying to the first chain conveyor 11 at the inlet side of the first belt conveyor 15, so that the first chain conveyor 11 stops conveying cylinders to the first belt conveyor 15, and collision and breakage between the cylinders on the first belt conveyor are avoided. At this moment, the blocking cylinder 4 on the first chain conveyor 11 plays a role of stopping the carrier plate, and the carrier plate 3 moves in the conveying direction under the operation of the first chain conveyor 11 until the trapezoidal opening 31 of the carrier plate 3 contacts with the stop lever of the blocking cylinder 4, and the carrier plate stops advancing. And the carrier plate 3 will collide with the roller of the travel switch 5 arranged at the rear side of the blocking cylinder 4 before contacting with the blocking cylinder 4, the travel switch 5 sends a signal to the control device to indicate that the carrier plate has moved to the current position, and the carrier plate stops at the current position due to the non-action of the blocking cylinder, so that the control device controls the working state of the blocking cylinder at the rear side, and the first chain conveyor 11 is prevented from conveying more carrier plates to the current position, so that the cylinder bodies on the carrier plate collide with each other, and the cylinder bodies are conveyed in order.

When the first belt conveyor 15 sends a feeding signal to the control device, the control device controls the blocking cylinder 4 to release the carrier plate and allow the carrier plate to advance toward the first belt conveyor 15. After the carrier plate 3 is released, the blocking cylinder 4 and the travel switch 5 are automatically reset, and after the control device receives a signal, the blocking cylinder on the rear side is controlled to release the carrier plate, so that the first chain conveyor 11 continues to convey the carrier plate 3. Because be provided with a plurality of travel switch 5 on the first chain conveyer 11 and block cylinder 4, through travel switch 5 with block the cooperation work of cylinder 4, realize the well orderly transport of cylinder body, prevent to cause the cylinder body to damage because of colliding between the cylinder body.

Carrier plate 3 continues to advance after contacting travel switch 158 until it contacts travel switch 159, at which point the control unit controls the drive mechanism of first belt conveyor 15 to stop the operation of the conveyor belt, so that the bath rests on first belt conveyor 15, waiting for oven 16 to send a load signal to the control unit.

In the embodiment, the contact surface between the conveying belt 156 and the carrier plate 3 is rough, and the outer side surface of the conveying belt 156 is provided with a plurality of salient points for increasing the friction between the conveying belt and the carrier plate, so that the carrier plate does not slip during conveying, and the driving mechanism is prevented from doing too much idle work and increasing energy consumption.

In the robot-based four-channel fiber spraying and curing line provided by the invention, each group of conveying lines in the oven 16 can be divided into an upper working area and a lower working area (namely, two third chain conveyors 163 which are arranged in parallel from top to bottom), and the bathtub curing line is changed into a four-channel heating and curing line.

The control device further controls the working state of the lifting mechanism of the first belt conveyor 15 according to the feeding signals sent by the upper working area and the lower working area in the oven, if the upper working area of the oven sends the feeding signals to the control device, the lifting mechanism of the first belt conveyor 15 corresponding to the upper working area is started, and the lifting mechanism lifts the first belt conveyor 15 through the action of the telescopic cylinder 153 and the X-shaped bracket 152; the control then operates the drive mechanism of the first belt conveyor 15 to transport the tubs to the upper operating zone of the oven 16 via the conveyor belt 156. At the conclusion, the travel switches 158 and 159 on the first belt conveyor 15 will be reset. Then, the lifting mechanism of the first belt conveyor lowers the first belt conveyor, and after the control device receives a signal that the lifting mechanism finishes the lowering operation of the first belt conveyor, the control device controls the first chain conveyor 11 to continuously convey the bathtub to the first belt conveyor 15. Similarly, if the lower zone of the oven 16 sends a loading signal to the control device, the control device controls the drive mechanism of the first belt conveyor 15 corresponding to the lower zone to operate, so as to convey the bathtub to the lower zone of the oven via the conveyor belt 156. At completion, travel switches 158 and 159 will reset. Subsequently, the control device controls the first chain conveyor 11 to continue conveying the bathtub to the first belt conveyor.

a liftable discharge conveying mechanism can be arranged at the outlet side of the third chain conveyor 163 arranged in the oven 16, the structure of the discharge conveying mechanism is the same as that of the first belt conveyor, and the structure and the working principle of the third chain conveyor 163 are basically the same as those of the first chain conveyor 11, and the third chain conveyor is also provided with a blocking cylinder 4 and a travel switch 5. After the blocking cylinder closest to the first belt conveyor 15 in the oven releases the carrier plate, the working position is in an empty state, and after the control device receives the signal (namely, the feeding signal) of the blocking cylinder, the control device correspondingly controls the driving device of the door body to work, so that the driving device opens the corresponding door body, and the first belt conveyor 15 can convey the bathtub to the empty working position conveniently.

Due to the long working time of the oven 16 and the painting robot 2, a plurality of travel switches 5 and blocking cylinders 4 are provided on the third chain conveyor 163, the first chain conveyor 11 and the first chain conveyor 13, a travel switch 158 and a travel switch 159 are provided on the first belt conveyor 15, and a blocking cylinder 143 and a proximity switch 142 are provided on the second chain conveyor to control the position of the carrier plate, so that the bathtub can be conveyed well and orderly.

In conclusion, the auxiliary support frame with a special structure is used for stably supporting the bathtub which is just formed, powerful support is provided for the inner top surface and the inner side surface of the bathtub, and the surface of the bathtub is prevented from deforming due to the gravity of resin and glass fiber. In addition, a plurality of blocking cylinders and travel switches are arranged on the first chain conveyor and the third chain conveyor and used for stopping the carrier plate loaded with the auxiliary supporting frame, so that the bathtubs are conveyed on the first chain conveyor and the third chain conveyor in a well-ordered manner, high-efficiency and high-quality fiber spraying work is completed, the damage caused by collision among the bathtubs in the conveying process is avoided, and the yield is low. And the second chain conveyor is provided with a blocking cylinder, a proximity switch and a second liftable belt conveyor, so that each fiber spraying working line is respectively conveyed with a bathtub. In addition, four third chain conveyors are arranged in the oven, and the first liftable belt conveyor conveys the sprayed fiber bathtub to each third chain conveyor in the oven, so that the processing capacity of the assembly line is greatly improved, the occupied area is reduced, and the space utilization rate is improved. The four-channel fiber spraying and curing assembly line based on the robot has the advantages of high automation degree, capability of reducing personnel investment, stability, reliability, good quality of produced bathtub products and high yield.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. A four-channel fiber spraying and curing assembly line based on a robot comprises a fiber spraying working line, a drying oven and a second chain conveyor, wherein the fiber spraying working line consists of three first chain conveyors and a spraying robot for resin fiber spraying which are sequentially connected; the spraying robot is arranged on one side of the first chain conveyor in the middle; the bathtub is characterized by further comprising a support plate, an auxiliary support frame for supporting the bathtub, a control device, a blocking cylinder and a travel switch;

2. the robot-based four-channel fiber-jet curing line of claim 1, further comprising a steam generator and a resin agitator; the resin stirrer is provided with a stirring chamber for storing resin and a steam chamber which is positioned at the periphery of the stirring chamber and is convenient for heat transfer between steam and the resin; the steam outlet of the steam generator is communicated with the steam chamber, and the steam chamber is provided with a steam discharge port; the stirring chamber is internally provided with a temperature sensor, a stirring rod for stirring resin and a driving mechanism for driving the stirring rod to work, and is provided with a resin feeding hole and a resin discharging hole connected with the spraying robot; the steam generator, the resin stirrer and the temperature sensor are respectively and electrically connected to the control device.

3. The robot-based four-channel fiber spraying curing line as claimed in claim 2, wherein the resin feed port is provided with a rotatable flip cover for sealing the resin feed port.

4. The robot-based four-channel fiber-jet curing line of claim 2 or 3, wherein the stirring chamber is cylindrical and the steam chamber is toroidal; the steam discharge port is arranged at the top of the steam chamber; the steam outlet is connected to the bottom of the steam chamber through a pipeline; the resin discharge port is arranged at the bottom of the stirring chamber.

5. The robot-based four-channel fiber spraying curing line as claimed in claim 1 or 2, further comprising a buzzer, a broken yarn detector, a glass fiber bracket arranged at one side of the spraying robot, and a plurality of guide components for guiding the glass fiber bundles; the broken yarn detector and the plurality of guide components are respectively arranged on the glass fiber bracket; the glass fiber bundle sequentially passes through the guide part, the eyelet of the broken yarn detector and the guide part to be connected to the spraying robot; the buzzer and the broken yarn detector are respectively and electrically connected to the control device.

6. The robot-based four-channel fiber spraying and curing assembly line of claim 5, wherein the guide component comprises a fixed frame and a guide ring arranged on the fixed frame; the guide ring is mounted on the fixed frame through bolts; the fixing frame is welded or fixed on the glass fiber bracket by bolts; the guide ring is made of plastic; the glass fiber support comprises an underframe, a vertical support rod fixed on the underframe, a cross rod fixed on the top of the vertical support rod and an inclined support rod, wherein two ends of the inclined support rod are respectively connected with the vertical support rod and the cross rod; the fixing frames are respectively and fixedly connected with the cross rod and the vertical supporting rod, and the broken yarn detector is fixed on the inclined supporting rod and positioned between the two fixing frames; and a fixing frame which is obliquely arranged is arranged at the joint between the supporting vertical rod and the cross rod.

7. The robot-based four-channel fiber spraying curing line as claimed in claim 1, wherein the first belt conveyor, the third chain conveyor and the first chain conveyor at the front side and the rear side are respectively provided with a first protection plate at the outer side, and the first chain conveyor at the middle is provided with a first protection plate at the front side and the rear side of the fiber spraying workbench at the outer side; second protection plates are respectively arranged on the outer sides of the second chain conveyors; the distance between the two first protection plates and the two second protection plates is larger than or equal to the width of the support plate, and the top surfaces of the first protection plates and the second protection plates are higher than the top surface of the support plate; the carrier plate is a square plate.

8. The robot-based four-channel fiber spraying and curing assembly line of claim 7, wherein a groove slidably connected with the support plate is formed in the inner side surface of the first protection plate.

9. The robot-based four-channel fiber spraying and curing line of claim 1, wherein the reinforcing ribs are wood bars and are uniformly spaced; the reinforcing frame consists of two parallel top plates and two parallel bottom plates, and the top plates are vertically connected with the bottom plates; the top surface of the top plate is connected with the reinforcing rib positioned on the inner top surface of the supporting seat; the frame is made of metal; the supporting piece comprises a supporting ejector rod and a vertical rod, the bottom of the vertical rod is fixed to the frame, the top of the vertical rod is fixed to the bottom of the supporting ejector rod, and the top of the supporting ejector rod is fixed to the reinforcing frame; the support is provided with a supporting cross rod with a triangular cross section, and the frame is correspondingly provided with a connecting rod which is inosculated with the supporting cross rod and is erected on the supporting cross rod.

10. the robot-based four-channel fiber spraying and curing assembly line of claim 1, wherein the first belt conveyor and the second belt conveyor each comprise a driving shaft and a driven shaft rotatably arranged on a base, a conveying belt for conveying a carrier plate, and a driving mechanism for driving the driving shaft to rotate; belt pulleys are respectively fixed at two ends of the driving shaft and the driven shaft, and the conveying belt is wound on the belt pulleys of the driving shaft and the driven shaft; the base is provided with a plurality of rotatable supporting rollers which are abutted with the inner side surface of the conveying belt.