CN206068818U - It is a kind of based on special spiral rod by the continuous conveying device of materials overturning - Google Patents

Abstract

The utility model belongs to the technical field of material packaging and conveying equipment, and provides a continuous conveying device based on a special-shaped screw for turning over materials, including a conveyor belt, a feeding screw, a driving device and a supporting device, and a limit rail is arranged on the upper end of the conveyor belt. The limiting track is connected with the support device and forms a channel for the material to turn over with the feeding screw; the fed materials with the same shape are connected head-to-tail in a row from one end of the feeding screw to the limiting track. When the screw rotates, the material to be fed turns up and down 180 degrees along the axis of the feeding screw in the limit track and keeps a certain distance, then turns back to the original state, and is output from the other end of the feeding screw to the conveyor belt. The device can also adjust the screw speed according to production requirements to match the production line. The whole process is high-speed and stable without rigid impact of movement. The device adopts modular design and has the characteristics of low cost, simple and compact structure, convenient installation and debugging, high efficiency and stable performance.

Description

A continuous conveying device that turns materials over based on special-shaped screws

technical field

The utility model relates to the technical field of material packaging and conveying equipment, in particular to a continuous conveying device for turning over materials based on a special-shaped screw.

Background technique

Commodities in modern society are increasingly competitive in trade and circulation. Under the premise of ensuring product quality, the form of product packaging is also changing with each passing day. Consumers have higher and higher requirements for commodity packaging. The coordinated combination of product appearance and function meets consumers' requirements. Packaging machinery is a mechanical device with a high degree of automation. It can greatly increase production efficiency, improve the production environment, reduce production costs, improve commodity grades, and increase product added value, thereby enhancing the market competitiveness of commodities and bringing greater social benefits. benefits and economic benefits.

In the modern production process, it is often necessary to turn up and down a row of continuous materials and output them for the efficient implementation of the next process. The existing production lines generally use dial devices or intermittent mechanical mechanism devices to realize the turning and feeding of continuous materials. During the production process, the speed The impact is large, the working rhythm is slow, and high-speed and stable feeding cannot be achieved, resulting in a decrease in production efficiency. Moreover, these devices are installed on the production line with complex mechanisms, large space occupation, large noise during production, and high cost, which cannot meet the needs of today's product packaging. production requirements. At present, there is no device that uses a special-shaped screw to reverse and feed the materials in the continuous conveying process in the production process.

Contents of the invention

The purpose of this utility model is to provide a continuous conveying device based on a special-shaped screw that turns materials over, which can well overcome the defects of the prior art, and realize the continuous material turning up and down with simple structure, low noise, continuous high speed, stability and no impact. Purpose.

In order to achieve the above object, the solution of this utility model is: a continuous conveying device based on a special-shaped screw to turn over the material, including a conveyor belt, a feeding screw, a driving device and a supporting device, and the driving device is used to drive the feeding screw. The screw and the driving device are detachably installed on the support device; the conveyor belt is used to continuously convey the supplied materials with the same shape, and the supply screw is a special-shaped screw located on the upper end side of the conveyor belt and parallel to the conveyor belt; The upper end of the conveyor belt is also provided with a limit track, which is connected with the support device and forms a channel for material turnover with the feeding screw; One end enters the limit track, and as the special-shaped screw rotates, the fed material turns up and down 180 degrees along the axis of the feed screw in the limit track and then turns back to the original state, and is output from the other end of the feed screw to the conveyor belt .

Preferably, the limit track is three stainless steel bars, and the feeding screw includes three parts: an initial section, a middle section and a rear section, and the initial section is a spiral groove with equal pitch and groove depth for introducing materials; the middle section is The spiral groove with variable pitch and variable groove depth, the feeding screw rotates and the limit track cooperates to turn over the fed material; The materials are output according to a certain interval.

Preferably, on the one hand, the material to be fed translates forward with the rotation of the spiral groove in the material track; It is turned back to the initial state and output. The linear speed of the supplied material output by the feeding screw is equal to the speed of the conveyor belt. The whole turning process is high-speed and stable, without rigid impact of movement.

Preferably, the supplied materials are spherical, bottle-shaped or tank-shaped solid materials with the same size and shape, and the cross-section of the bottle-shaped or tank-shaped materials is circular, square, elliptical or polygonal; The cross-sectional gap between the feeding screw and the limit track forms a channel that can accommodate the material to be fed. The outer surface of the material to be fed is meshed with the spiral groove surface of the feeding screw and is in line contact at all times. The material to be fed is in the spiral Driven by the groove, compound movement is made along the axial and radial directions of the feeding screw to ensure the stability of material feeding.

Preferably, in the process of the compound movement, the acceleration change of the material to be fed is divided into a constant speed section, a variable acceleration section, a constant acceleration section and a variable deceleration acceleration section, and the acceleration changes between each section adopt a trigonometric function curve for a smooth transition In order to avoid the rigid impact caused by sudden acceleration changes.

Preferably, the driving device includes a servo motor, a reducer, a belt end and a synchronous belt, the ends of the servo motor and the feeding screw are provided with a belt end, and a synchronous belt is arranged on the belt end, so The synchronous belt is used to connect the transmission between the servo motor and the feeding screw; the driving device also includes a motion controller and a servo motor driver, and the motion controller calculates the required speed of the feeding screw according to the amount of material and the speed of the conveyor belt. And output the speed to the servo motor driver, the servo motor driver controls the rotation of the servo motor to complete the uniform rotation of the feeding screw.

Preferably, the support device includes a base parallel to the conveyor belt, one end of the base is a support, and the other end is provided with a guide rail support with a locking structure; the servo motor and the reducer are detachably fixed on the support, The guide rail support is used to support the guide rail parallel to the conveyor belt. One end of the guide rail is provided with a guide rail base, and the guide rail base is used to fix the top support; when the locking structure is released, the top support and the guide rail can be conveyed together. The direction of the belt moves horizontally; one end of the feeding screw is fixed on the top support, and the other end is fixed on the support; the two ends of the limit track are respectively fixed on the support and the top support.

The utility model has the advantages of simple structure, reliable performance, modular design, compact structure, low cost, low noise and no rigid impact in the production process, convenient speed adjustment, and very convenient assembly and adjustment of the device on the production line. The turning device can be widely used in daily chemical, medicine, sanitation, food, packaging and other industries to cooperate with the high-speed work of labeling, cleaning, coding and other processes.

Additional advantages, purposes, and features of the present utility model will be partially set forth in the following description, and will be partly apparent to those of ordinary skill in the art after studying the following, or can be known according to the practice of the present utility model . The objectives and other advantages of the utility model will be realized and obtained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Those skilled in the art will appreciate that the purposes and advantages that can be achieved by the utility model are not limited to the above specific descriptions, and the above and other objectives that can be achieved by the utility model will be more clearly understood from the following detailed description.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model device;

Fig. 2 is the front view of the structure in the material turning process of the utility model;

Fig. 3 is a structural top view of the utility model in the material turning process;

Fig. 4 is the acceleration change curve of the fed material during the compound movement;

Fig. 5 is a schematic diagram of the cross section of the fed material and the spiral groove surface of the special-shaped screw;

In the figure: 1-top support; 2-rail base; 3-rail support; 4-locking structure; 5-guide; 6-base; 7-servo motor; 8-reducer; 9-support ; 10-synchronous belt; 11-conveyor belt; 12-limiting track; 13-supply screw.

detailed description

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

As shown in Figures 1 to 5, it is the structure of an embodiment of the present utility model, a continuous conveying device based on a special-shaped screw that turns materials over, including a conveyor belt 11, a feeding screw 13, a driving device and a supporting device, The driving device is used to drive the feeding screw 13, and the feeding screw 13 and the driving device are detachably installed on the supporting device; the conveyor belt 11 is used to continuously convey rigid/semi-rigid (metal shell/non-metal shell) body) the material to be fed, the feeding screw 13 is a special-shaped screw located on the upper end side of the conveyor belt 11 and parallel to the conveyor belt 11, as shown in Figure 2, the rotation direction of the special-shaped screw and the direction of the fed material are given. Forward direction. The upper end of the conveyor belt 11 is also provided with a limit track 12, the limit track 12 is connected with the support device and forms a channel for material turnover with the feeding screw 13; the supplied materials with the same shape are connected head to tail in a row Enter the limiting track 12 from one end of the feeding screw 13, and as the special-shaped screw rotates, the supplied material turns up and down 180 degrees in the limiting track 12 along the axis of the feeding screw 13 and then turns back to the original state, and from the feeding The other end of screw rod 13 is output on the conveyor belt.

The limit track is three stainless steel bars. The feeding screw includes three parts: the initial section, the middle section and the rear section. The initial section is a spiral groove with equal pitch and groove depth for introducing materials; the middle section is a variable pitch and variable groove depth. The spiral groove, the feeding screw 13 rotates and the limit track 12 cooperates to turn over the supplied material; the rear section is a spiral groove with equal pitch and equal groove depth, which is used to turn the material turned back to the original state according to a certain distance output.

On the one hand, the material to be fed translates forward with the rotation of the spiral groove in the material track; In the initial state and output, the linear speed of the supplied material output by the feeding screw 13 is equal to the speed of the conveyor belt 11. The entire turning process is high-speed and stable, without rigid impact of movement.

The material to be fed is a spherical, bottle-shaped or can-shaped solid material with the same size and shape. The cross-section of the bottle-shaped or can-shaped material is circular, square, elliptical or polygonal. The cross-section of the material is square. The cross-sectional gap between the feeding screw 13 and the limit rail 12 forms a channel that can accommodate the material to be fed. The outer surface of the material to be fed is meshed with the spiral groove surface of the feeding screw 13 and is in line contact at all times. Driven by the spiral groove, the material to be fed makes compound motions along the axial and radial directions of the feeding screw 13 to ensure the stability of material feeding. During the feeding process, the stability of the feeding can be obtained only when the close engagement between the screw helical groove surface and the curved surface of the material being fed is ensured at the same time, that is, the shape of the helical groove surface strictly changes with the shape of the cross-section of the two. ensure. The relative movement of the two is reflected in the geometry, as shown in Figure 5, with ∑ as the imaginary parent surface of the material being fed, which is engaged with the spiral groove surface ∑ ₁ of the screw, and the intersection section ∑c of the two is made along the axis of the screw. Simple or compound motion, while the screw rotates around its own axis at an angular velocity ω, the helical groove surface Σ ₁ of the screw is developed as the envelope of the cross section Σc in relative motion.

In the process of compound movement, the acceleration change of the material being fed is divided into constant velocity section I, variable acceleration section II, constant acceleration section III and variable deceleration acceleration section IV, and the acceleration changes between each section adopt trigonometric function curves for smooth transition. In order to avoid the rigid shock caused by sudden acceleration. In order to realize the continuity and gentleness of the velocity change of the material being fed during the feeding process, avoid inertial impact, and ensure the high speed and stability of the feeding motion, the utility model proposes a steady-state feeding variable acceleration motion, that is, when the material is fed Trigonometric functions are used to transition each section of the acceleration change during the feeding material traveling process, as shown in Figure 4. This is also the helical variation of the special-shaped screw. The helical form of the special-shaped screw is a key factor related to the shape of the helical groove and the stability of material supply. It is calculated as follows:

In the formula, T-period (s), its value is determined by the total time of each section; t ₂ -time (s); a _m -acceleration of constant acceleration section (mm/s ² ); c _i ——integral constant, i= 1,2,3,4. Part or all of the construction methods of the above-mentioned I, II, III and IV helices can be selected according to the actual situation.

The structure of the special-shaped screw can be realized by constructing a mathematical model of a helix and a mathematical model of a spiral groove according to the shape of the material to be fed. Wherein: the construction of the spiral mathematical model is shown in Figure 4 and discussed above.

The construction of the mathematical model of the spiral groove: the entire movement of the screw feeding is synthesized by two simple movements, namely, the rotation movement of the screw and the movement of the material being fed or other types of movement. The essence of constructing the spiral groove surface of the screw is to investigate the relative positional relationship between the material to be fed and the screw. In the utility model, the motion form of the material to be fed has been determined, and can be solved by coordinate transformation between two or more coordinate systems. The surface equation of the spiral groove meshing with the surface of the material being fed is obtained.

In the construction of the mathematical model of the spiral groove, it is necessary to determine: the geometric principle of the spiral groove surface forming, the solution of the envelope surface equation of the single-parameter surface family, the mathematical modeling of the spiral groove surface based on the single-parameter envelope theory, the solution of the cross-section slice family equation, the meshing Equation solving, spiral groove surface equation, etc.; these can be obtained from the establishment of the mathematical model of the spiral groove.

The driving device comprises a servo motor 7, a reducer 8, a belt end and a synchronous belt 10, the ends of the servo motor 7 and the feeding screw 13 are provided with a belt end, and the belt end is equipped with a synchronous belt 10, The synchronous belt 10 is used to connect the transmission between the servo motor 7 and the feeding screw 13; the driving device also includes a motion controller and a servo motor driver, and the motion controller calculates the feeding screw according to the amount of material and the speed of the conveyor belt 11. required speed, and output the speed to the servo motor driver, the servo motor driver controls the rotation of the servo motor to complete the uniform rotation of the feeding screw 13. When the quantity of the material changes, the motion controller will adjust the rotating speed of the feeding screw 13 following the change of the quantity of the material.

The support device includes a base 6 parallel to the conveyor belt, one end of the base 6 is a support 9, and the other end is provided with a guide rail support 3 with a locking structure 4; the servo motor 7 and the reducer 8 are detachably fixed on On the support 9, the guide rail support 3 is used to support the guide rail 5 parallel to the conveyor belt 11. One end of the guide rail 5 is provided with a guide rail base 2, and the guide rail base 2 is used to fix the top support 1; the locking structure 4 is loose. When opening, the top support 1 and the guide rail 5 can move horizontally together along the direction of the conveyor belt 11; one end of the feeding screw 13 is fixed on the top support 1, and the other end is fixed on the support 9; The two ends of the track 12 are fixed on the support 9 and the top support 1 respectively. The locking structure 4 may be a toggle clamp.

The above-mentioned embodiments can be changed without departing from the scope of protection of the present utility model, so the structures contained in the above description and shown in the accompanying drawings should be regarded as illustrative rather than limiting the scope of the utility model patent application. protected range.

Claims (7)

1. it is a kind of based on special spiral rod by the continuous conveying device of materials overturning, including conveyer belt, feeding screw, driving means and Support meanss, driving means are used to drive feeding screw, feeding screw and driving means to be detachably arranged in support meanss； Characterized in that, it is described it is used for conveyer belt be fed material in continuous conveying shape identical, the feeding screw is positioned at conveying With upper end side and the special spiral rod parallel with conveyer belt；End is additionally provided with limit track on the conveyor belt, the limit track with Support arrangement is connected and the passage of materials overturning is constituted between feeding screw；It is from beginning to end that the shape identical is fed material One end input limit track of row's string from feeding screw, as special spiral rod rotation is fed material along feeding screw axis It is flipped back to original state after 180 degree is spun upside down in limit track again, and exports to conveyer belt from the other end of feeding screw On.

2. device according to claim 1, it is characterised in that the limit track is three stainless steel strips, the feed Screw rod includes just section, three part of stage casing and back segment, the just helicla flute of the section for uniform pitch equivalent gullet depth, for introducing material；Institute The helicla flute that stage casing is not only varying pitch but also change groove depth is stated, feeding screw rotation will be fed material with limit track cooperation and be turned over Turn；Helicla flute of the back segment for uniform pitch equivalent gullet depth, the material for will be flipped back to original state are defeated according to certain spacing Go out.

3. device according to claim 2, it is characterised in that it is described be fed material in material track on the one hand with Spiral fluted rotates translation forward, and on the one hand the restriction lower edge feeding screw axis in limit track spins upside down 180 degree and protects After holding a period of time, original state being flipped back to again and being exported, feeding screw output is fed the linear velocity and conveying belt speed of material Degree is equal, and whole switching process is at a high speed and stable, nonmotile rigid shock.

4. device according to claim 1, it is characterised in that the material that is fed is equal in magnitude, profile identical The cross section of the solid material of spherical, ampuliform or can-like, ampuliform or can-like material is circular, square, oval or polygon；Institute State feeding screw and formed with the section space of limit track and can hold the passage for being fed that material passes through, be fed the outer surface of material With the spiral groove face spatial conjugate of feeding screw and the moment is in linear contact lay state, be fed material under helicla flute drive along Feeding screw axially and radially does compound motion, it is ensured that the stability of material feed.

5. device according to claim 4, it is characterised in that during the compound motion, be fed material Acceleration change be divided into constant speed section, become accelerating sections, etc. accelerating sections and change subtract acceleration section, and each intersegmental acceleration change adopts three Angle function curve smoothing transition, with the rigid shock for avoiding sudden change of acceleration from bringing.

6. device according to claim 1, it is characterised in that the driving means include servomotor, decelerator, wheel belt The end of end and Timing Belt, the servomotor and feeding screw is equipped with wheel band edge, configures Timing Belt, institute on the wheel band edge State the transmission that Timing Belt is used to connect between servomotor and feeding screw；The driving means also include motion controller and watch Take motor driver, rotating speed of the motion controller according to needed for material quantity and conveyer belt speed calculation feeding screw, and should Speed is exported to motor servo driver, motor servo driver control servomotor rotation, completes the at the uniform velocity rotation of feeding screw Turn.

7. device according to claim 6, it is characterised in that support meanss include the base parallel to conveyer belt, base One end bearing, the other end is provided with the guide rail bearing with locking mechanism part；The servomotor, decelerator are removably fixed On bearing, guide rail bearing is used to support one end of the guide rail parallel with conveyer belt, guide rail to be provided with guide rail base, and guide rail base is used In stationary center bearing；When locking mechanism part unclamps, the direction level that top bearing and guide rail can be together along conveyer belts is moved It is dynamic；Described feeding screw one end is fixed on top bearing, and the other end is fixed on bearing；The two ends difference of the limit track It is fixed on bearing and top bearing.