CN112849997B

CN112849997B - Carrier conveying device and carrier conveying method

Info

Publication number: CN112849997B
Application number: CN201911193297.7A
Authority: CN
Inventors: 李毓强; 姜银江; 张锐
Original assignee: United Automotive Electronic Systems Co Ltd
Current assignee: United Automotive Electronic Systems Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2022-09-06
Anticipated expiration: 2039-11-28
Also published as: CN112849997A

Abstract

The invention provides a carrier conveying device and a carrier conveying method, wherein the carrier conveying device comprises a driving mechanism and a pushing mechanism, and can realize the linkage operation of carriers of a waiting position and a processing position on the same station, so that the carriers on the waiting position and the carriers on the processing position can successively enter and exit the processing position under the pushing action of the pushing mechanism. Compared with the traditional automatic production line, the automatic lifting device cancels the lifting mechanism arranged at a special station on the production line, and directly pushes, positions and fixes the carrier on the processing station through the pushing mechanism, thereby saving the time spent by the lifting mechanism during lifting and descending, obviously improving the production efficiency of the production line, reducing the beat of the production line, and having small occupied space and low cost. In addition, the belt part where the processing position is located is set to be the static section, so that the carrier can be conveniently and timely positioned and fixed after being pushed to the processing position by the pushing mechanism, and the production efficiency of the production line is further improved.

Description

Carrier conveying device and carrier conveying method

Technical Field

The invention relates to the field of automatic production lines, in particular to a carrier conveying device and a carrier conveying method.

Background

Nowadays, the automation of the production line has become a trend, and it is a general objective of the factory to reduce the production tact and increase the production efficiency. An existing automated production line generally comprises an automated transfer track, a processing station, and a product carrier system. In an automatic assembly line mainly used for producing small products, such as a pressure sensor of an automobile, an engine electronic controller, an oxygen sensor and the like, a mode that a belt dragged by a motor is used as a conveying rail, and a jacking mechanism is used as a carrier for fine positioning and processing is generally used.

Fig. 1 is a schematic view of a production process of a conventional automatic production line, which mainly uses belt transmission, positioning of a lifting mechanism, and product conveying by a carrier as shown in fig. 1, but the process obviously has a problem of low production efficiency. This is because, in the process of conveying products by carriers, the minimum processing interval time of two successive products on the same station is too long, which can ensure that the carriers do not collide with each other and ensure that the products are not separated from each otherIs actually a great waste in terms of production efficiency, increasing the time cost of the product. In the figure

The symbol indicates that the vehicle is in a suspended state,

the symbol indicates that the vehicle is in a state of moving to the right in the figure,

the symbol indicates a state where the jack holding the carrier is raised,

the symbol indicates a state where the jack holding the carrier is lowered. Further, the production flow shown in fig. 1 specifically includes:

assuming that the time for moving the carrier from one station to another station along with the belt is T1, and the time for moving (lifting or lowering) the lifting mechanism once is T2, taking the processing flow of the second station 102 as an example, at this time, the first station 101 and the third station 103 are waiting stations, and the second station 102 is a processing station:

when the products carried by the a carrier 111 on the second station 102 are processed, the jacking mechanism 12 carrying the a carrier descends by the time-consuming T2, and then the a carrier 111 is dragged by the belt 13 to move from the second station 102 to the third station 103 by the time-consuming T1; to ensure that the carriers do not collide with each other, when the a carrier 111 arrives at the third station 103 and issues an arrival command, the B carrier 112 starts to move from the first station 101 to the second station 102 and takes T1 (here, after the B carrier 112 arrives at the second station 102, the next carrier starts to move to the first station 101 and waits), and then the B carrier 112 is jacked up by the jacking mechanism 12 and takes T2, and then the products carried by the B carrier 112 can start to be processed. That is, after the processing of the product on the a carrier 111 in the second station 102 is completed, it takes 2T1+2T2 time to process the next product (the product on the B carrier 112) again in the station, obviously, the continuous processing in the same station requires 2T1+2T2 time intervals, and the time interval is not short, which can reach about 10 seconds in the actual production line, so the time interval between the processing in the same station is longer, and the production efficiency is greatly reduced.

Therefore, there is a need to design a novel carrier conveying device and a carrier conveying method to reduce the production tact and improve the production efficiency.

Disclosure of Invention

The invention aims to provide a carrier conveying device and a carrier conveying method, which aim to solve the problem that the continuous processing interval time of the same station is too long in the existing automatic production line.

In order to solve the technical problem, the invention provides a carrier conveying device, which comprises a conveying platform, wherein a waiting position and a processing position are sequentially arranged on the conveying platform along a conveying direction; the driving mechanism is connected with the pushing mechanism and used for driving the pushing mechanism to realize linkage of the two carriers; wherein the pushing mechanism has a first active position and a second active position;

the pushing mechanism is configured to be located at the waiting position and the processing position when the pushing mechanism is located at the first movable position;

the pushing mechanism is configured to push the carrier on the processing station to move out of the processing station and simultaneously push the carrier on the waiting station to move to the processing station when moving from the first movable position to the second movable position;

the pushing mechanism is configured to be separated from the carrier moved out of the processing station when the pushing mechanism is in the second movable position;

the pushing mechanism is configured to be separated from the carrier on the processing station when the pushing mechanism moves from the second movable position to the first movable position.

Optionally, the conveying platform is a belt conveying device; the belt conveying device comprises a belt, the belt is provided with a static section and a moving section, the static section is arranged at the processing station, and the moving section is arranged at the waiting station; the pushing mechanism is used for pushing the carrier on the waiting position to move into the static section and then keep static; the moving section is used for automatically conveying the carrier to the waiting position.

Optionally, the stationary section is provided with a damping structure.

Optionally, a stop which is telescopic in a direction perpendicular to the conveying direction is arranged at the processing station and/or the waiting station, and is used for limiting the displacement of the corresponding carrier in the conveying direction.

Optionally, the speed of the pushing mechanism moving the carrier is greater than the moving speed of the moving section.

Optionally, the pushing mechanism comprises two retractable locking parts;

when the two locking parts respectively extend out towards the corresponding carriers, the two locking parts are respectively locked with one carrier; when the two locking parts respectively contract towards the carriers departing from the corresponding parts, the two locking parts are respectively unlocked with the corresponding carriers.

Optionally, the pushing mechanism further includes two pushing rods arranged in parallel along the conveying direction, the two pushing rods are arranged on opposite sides of the conveying platform, the driving mechanism drives the two pushing rods to move along the conveying direction, and each pushing rod is provided with two locking portions arranged along the axial direction.

Optionally, the locking parts form two sets, each set includes two locking parts symmetrically arranged on different push rods, and each set is located between two push rods.

Optionally, the locking part comprises a triangular stop block and a spring; the stop block is connected with the pushing rod through the spring; the spring is used for pushing the stop block to stretch in a direction perpendicular to the conveying direction; one side of the stop block is used for contacting with the carrier, and the other side of the stop block is connected with the spring;

the stop block is used for extending under the pushing of the elastic force of the spring to lock the carrier and is also used for moving relative to the pushing rod to unlock the carrier.

Optionally, the shape of the stop block is a right triangle, a right-angle side of the stop block is used for contacting with the carrier, and the other right-angle side is connected with the spring and is parallel to the pushing rod.

Optionally, the two pushing rods are connected through a connecting part and connected with the same driving mechanism.

Optionally, the two pushing rods are connected to the same driving mechanism, and the driving mechanism is used for synchronously pushing the two pushing rods to move.

Optionally, the driving mechanism includes a synchronous double cylinder or a synchronous double electric cylinder.

In order to solve the above technical problem, the present invention further provides a carrier transport method using the carrier transport device described above, where the carrier transport method includes:

the method comprises the following steps: placing the pushing mechanism in a first active position;

step two: the driving mechanism drives the pushing mechanism to move from the first movable position to the second movable position, and synchronously drives the carrier on the processing position and the carrier on the waiting position to move, so that the carrier on the processing position moves out of the processing position, and the carrier on the waiting position moves to the processing position;

step three: when the pushing mechanism reaches the second movable position, the carrier moved out of the processing station is separated from the pushing mechanism;

step four: the driving mechanism drives the pushing mechanism to return from the second movable position to the first movable position, and the pushing mechanism is separated from the carrier on the processing position at the moment;

step five: and sequentially moving the rest carriers flowing into the waiting positions and the rest carriers flowing into the processing positions out of and into the processing positions according to the mode from the first step to the fourth step.

Optionally, before performing step four, the method further includes:

after the carrier on the waiting position reaches the processing position, a detection mechanism sends a first signal to the driving mechanism, and the driving mechanism is used for driving the pushing mechanism to return to the first moving position from the second moving position after receiving the first signal.

Optionally, before performing step four, the method further includes:

and after the carrier on the waiting position reaches the processing position, a detection mechanism sends a second signal to a processing device, and the processing device is used for processing a product carried by the carrier reaching the processing position after receiving the second signal.

Optionally, before performing step four, the method further includes:

after the carrier on the waiting position reaches the processing position, a detection mechanism sends a third signal to the conveying platform, and the conveying platform is used for conveying the carrier to move to the waiting position after receiving the third signal.

Optionally, before performing step two, the method further includes:

after a processing device finishes processing the product carried by the carrier on the processing station, a detection mechanism sends a fourth signal to the driving mechanism; and the driving mechanism is used for driving the pushing mechanism to move from the first movable position to the second movable position after receiving the fourth signal.

Optionally, after the step four is executed, the method further includes:

after a carrier moves into the carrier conveying device and reaches the waiting position, a detection mechanism sends a fifth signal to the driving mechanism; and the driving mechanism is used for driving the pushing mechanism to move from the first movable position to the second movable position after receiving the fifth signal.

In the carrier conveying device and the carrier conveying method provided by the invention, the linked operation of the carriers of the waiting position and the processing position on the same station is realized, so that the carriers on the waiting position and the carriers on the processing position can successively enter and exit the processing position under the pushing of the pushing mechanism. Compared with the traditional automatic production line, the automatic production line provided by the invention has the advantages that the jacking mechanism arranged at a special station on the production line is omitted, and the carrier is pushed, positioned and fixed on the processing station directly through the pushing mechanism, so that the time spent by the jacking mechanism in jacking and descending is saved, the production efficiency of the production line can be obviously improved, and the beat of the production line is reduced.

In addition, the belt part where the processing position is located is preferably set to be a static section, so that the carrier can be timely positioned and fixed after being pushed to the processing position by the pushing mechanism, and the production efficiency of the production line is further improved; in addition, at special stations, such as a product gluing station, a dispensing station, a leakage test station, a press-fitting station and the like, a jacking mechanism is not required to be configured, so that the occupied space of the conveying device is reduced, the conveying device is suitable for a production line with narrow space, and the cost is low.

Drawings

The drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:

FIG. 1 is a schematic view of a production flow of a prior art automated production line, wherein horizontal arrows indicate the direction of conveyance and vertical arrows indicate the process flow;

fig. 2a is a schematic view of a pushing mechanism of a carrier transport device in a first movable position according to a preferred embodiment of the present invention;

fig. 2b is a schematic view of the pushing mechanism of the carrier transporting device in the second active position according to the preferred embodiment of the present invention;

fig. 3 is a schematic diagram of a production process of a carrier transport device according to a preferred embodiment of the present invention, wherein vertical arrows indicate a process flow;

FIG. 4 is a schematic view of the pushing mechanism and the drive mechanism provided by the preferred embodiment of the present invention;

FIG. 5a is a schematic view of a locking portion provided in accordance with a preferred embodiment of the present invention;

fig. 5b is a schematic view of a locking portion according to another preferred embodiment of the present invention.

In the figure:

101-a first station; 102-a second station; 103-a third station; a 111-A carrier; 112-B carrier; 12-a jacking mechanism; 13-a belt;

201-first wait bit; 202-a first processing station; 203-second wait bit; 21-a carrier; 211-a first carrier; 212-a second carrier; 213-a third vehicle; 22-a transfer platform; 221-a stationary section; 222-a moving section; 23-a pushing mechanism; 230-a connecting portion; 231. 232-a push rod; 251-a first locking portion; 2511. 2521-a stop; 2512. 2522-a spring; 252 — a second locking portion; 261. 262-a stop; 28-a drive mechanism; 31-a first active position; 32-second active position.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. And the advantages and features of the present invention will be more apparent from the following description.

It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is provided for the purpose of facilitating and clearly illustrating embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

As used in the appended claims and this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. As used in the appended claims and this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.

Please refer to fig. 2a and fig. 2b, which are schematic diagrams of the pushing mechanism of the carrier conveying device provided in the preferred embodiment of the present invention being located at the first movable position 31 and the second movable position 32, respectively, the carrier conveying device includes a conveying platform 22, a pushing mechanism 23, and a driving mechanism 28, the conveying platform 22 is provided with at least one station along the conveying direction, the station includes a first waiting station 201 and a first processing station 202 arranged in sequence; the pushing mechanism 23 and the driving mechanism 28 are both disposed at one side of the conveying platform 22, and the driving mechanism 28 is used for driving the pushing mechanism 23 to realize the linkage operation of the carrier 21 at the first waiting position 201 and the carrier 21 at the first processing position 202.

Specifically, the pushing mechanism 23 has a first movable position 31 and a second movable position 32, and is configured to move back between the first movable position 31 and the second movable position 32, and continuously push the carrier 21 at the first processing station 202 and the carrier 21 at the first waiting station 201 to move out of and into the first processing station 202 in sequence. More specifically, the first waiting position 201 is used for waiting for the carrier 21 before entering the first processing position 202, and processing the product transported on the carrier 21 at the first processing position 202, and of course, during the processing, the carrier 21 needs to be positioned and fixed, and these positioning and fixing are all completed by the pushing mechanism 23, that is, the pushing mechanism 23 drives the carrier 21 to enter the first processing position 202 and is positioned and fixed there. In addition, the carrier 21 moved out of the first processing station 202 typically enters a waiting position of the next station, such as the second waiting position 203.

In the operation process of the carrier conveying device, first, a carrier 21 is respectively arranged on the first processing station 202 and the first waiting station 201, and corresponding products are transported on the carriers 21; after the processing of the product at the first processing station 202 is completed, the driving mechanism 28 drives the pushing mechanism 23 to move from the first movable position 31 to the second movable position 32, so as to synchronously drive the carrier 21 at the first processing station 202 and the carrier 21 at the first waiting station 201 to move together, push the carrier 21 at the first processing station 202 to move out of the first processing station 202, and simultaneously push the carrier 21 at the first waiting station 201 to move to the first processing station 202, that is, sequentially move the two carriers 21 out of and into the first processing station 202; then, the product on the carrier 21 moved into the first processing station 202 is processed, when the pushing mechanism 23 reaches the second movable position 32, the carrier 21 moved out of the first processing station 202 is separated from the pushing mechanism 23, and a new carrier 21 flows into the first waiting station 201 again; at this time, the external processing device may start processing the product carried on the carrier 21 at the first processing station 202. Then, the pushing mechanism 23 starts to return to the first movement position 31 from the second movable position 32, and in this process, it should be understood that the pushing mechanism 23 is separated from the carrier 21 moving to the first processing station 202, and the separation here refers to separation of the pushing mechanism 23 from the pushing connection portion of the carrier 21, and the pushing mechanism 23 does not drive the carrier 21 to move during the moving process, and does not particularly refer to that the pushing mechanism 23 does not contact with the carrier 21. Furthermore, after the product moved into the first processing station 202 is processed, in the same manner as described above, the pushing mechanism 23 moves from the first movable position 31 to the second movable position 32 again, so as to move the rest of the carriers 21 flowing into the first waiting position 201 and the carriers 21 flowing into the first processing station 202 out of and into the first processing station 202 in sequence, and this is repeated continuously, which can greatly save the production time and improve the production efficiency.

As shown in fig. 2a, 2b and 3, in the present embodiment, the transfer platform 22 is preferably a belt transfer device comprising a belt, which is preferably provided with a stationary section 221 and a moving section 222; the stationary section 221 is disposed at the first processing station 202, and the moving section 222 is disposed at the first waiting station 201; when the carrier 21 is pushed by the pushing mechanism 23 and moved into the stationary section 221, it remains stationary, and the moving section 222 automatically transfers the carrier 21 to the first waiting position 201, or automatically transfers the carrier 21 pushed out of the first processing position 202 by the pushing mechanism 23 to the next position, such as the second waiting position 203.

Generally, in the existing belt automatic production line, the belt is continuously moved while maintaining the same speed. When the product is processed, the area needs to be kept still to ensure the processing precision. In the carrier conveying device provided by the present invention, a stationary section 221 is disposed at the first processing station 202, and the stationary section 221 does not move along with the movement of the belt and remains relatively stationary, so as to facilitate processing of the product. Optionally, the stationary section 221 is an unpowered belt segment. Since the movement of the carrier 21 into and out of the first processing station 202 is performed by the unidirectional pushing of the pushing mechanism 23, in order to relieve the inertia of the carrier after being pushed into the first processing station 202 by the pushing mechanism 23, the unpowered belt section preferably has damping, wherein the damping can be achieved by embedding standard damping members (elasticity) in the brackets at both sides of the unpowered belt section, or by roughening the unpowered belt section to increase the friction force. The moving section 222 may include a belt section with power, which can move the carrier 21 carried by the belt. In addition, the first processing station 202 further comprises a stop 262, and the stop 262 is retractable and vertical to the conveying direction and used for stopping the moving carrier 21 so as to accurately position the carrier 21 on the first processing station 202. The stop 262 is conventional in the prior art, and can be conveniently set by those skilled in the art, and the principle and structure thereof will not be described herein.

Optionally, the first waiting space 201 further includes a stop 261, the stop 261 is retractable perpendicular to the conveying direction for stopping the moving carrier 21, and the moving speed of the pushing mechanism 23 is greater than the moving speed of the moving section 222 of the first waiting space 201, so that the pushing mechanism 23 can quickly catch up with the carrier 21 and push it out to the first processing space 202 after the carrier 21 is released by descending the stop 261 of the first waiting space 201. Specifically, after the moving section 222 drives the carrier 21 to the first waiting position 201, the carrier 21 is stopped by the stop 261 and stops moving, and the pushing mechanism 23 is moved from the second moving position 32 to the first moving position 31, so as to lock the carrier 21 on the first waiting position 201; alternatively, when the pushing mechanism 23 moves from the second moving position 32 to the first moving position 31 or is located at the first moving position 31, the moving section 222 drives the carrier 21 to the first waiting position 201, and then the carrier is stopped and stopped by the stopper 261. Then, the stopper 261 is lowered and released, and the carrier 21 on the first waiting position 201 is pushed out to the first processing position 202 by the pushing mechanism 23.

Next, referring to fig. 4, the carrier transporting device will be further described with reference to fig. 3. Fig. 4 is a schematic diagram illustrating a pushing mechanism and a driving mechanism according to a preferred embodiment of the present invention, and fig. 3 is a schematic diagram illustrating a production process of a carrier transporting device according to a preferred embodiment of the present invention

Symbol denotes a carrier 21 orThe pushing mechanism 23 is in a state of being paused,

and

the symbols represent the state in which the carrier 21 or the pushing mechanism 23 is moved to the right and left in the drawing, respectively.

For convenience of description, different carriers 21 are respectively defined as a first carrier 211, a second carrier 212 and a third carrier 213 according to the sequence of entering the production process, and the pushing mechanism 23 has a first retractable locking portion 251 and a second retractable locking portion 252 for locking the first carrier 211 and the second carrier 212, respectively. When the two locking parts respectively extend out towards the corresponding carriers, the two locking parts are respectively locked with one carrier; when the two locking parts respectively retract towards the corresponding carriers, the two locking parts are respectively unlocked with the corresponding carriers. Here, the pushing mechanism 23 has two locking portions, so that it can well lock the first carrier 211 and the second carrier 212, respectively, so as to drive them to move. Specifically, there are many locking methods, such as mechanical grab bucket, electromagnet, retractable spring plate or drag hook.

Further, the first locking portion 251 and the second locking portion 252 have two active states, i.e., an extended state and a retracted state. When the corresponding locking parts extend towards the respective carriers, the locking parts are in an extending state, can hook and lock one carrier, and are locked with the carrier; when the locking part is contracted towards the direction departing from the carrier, the locking part is in a contracted state, and can slide over the carrier without driving the carrier to move (namely, automatically unlocking), namely, the locking part is unlocked with the carrier. Specifically, when the pushing mechanism 23 moves from the first moving position 31 to the second moving position 32, the first locking portion 251 and the second locking portion 252 are both in an extended state, and the pushing mechanism 23 respectively locks the first carrier 211 and the second carrier 212 through the two locking portions and drives the two carriers to move. When the pushing mechanism 23 moves from the second movable position 32 to the first movable position 31, the first locking portion 251 and the second locking portion 252 are both in a retracted state, and the pushing mechanism 23 slides over the second carrier 212 and the third carrier 213 during the moving process, but does not move or shift the two carriers. The extending state refers to a state that the locking part keeps a relatively fixed state, and can exert a certain acting force to the outside. And the retracted state means that the locking portion is preferably in the movable state or preferably in the retracted state. The movable state here means that the contracted state is an unstable state and can move when external force is applied, for example, the state can be contracted or translated under external force; the contracting state is a state in which the locking portion is automatically contracted and kept contracted without being subjected to an external force. For example, if the locking portion is a mechanical grab bucket, the extended state is a state where the grab bucket grips and locks the carrier, and the retracted state can be a state where the carrier is released and retracted without moving the carrier during the movement of the grab bucket itself. For example, the locking portion is an electromagnet, the extended state refers to a state where the electromagnet is powered on and holds the carrier, and the retracted state refers to a state where the electromagnet is powered off and releases the carrier.

In this embodiment, the pushing mechanism 23 preferably includes two pushing

rods

231, 232 arranged in parallel in the conveying direction. The two pushing rods are arranged on opposite sides of the conveying platform 22, the driving mechanism 28 drives the two pushing rods to move along the conveying direction, and each pushing rod is provided with a first locking portion 251 and a second locking portion 252 which are arranged along the axial direction.

Preferably, the locking parts form two groups, each group comprises two locking parts symmetrically arranged on different push rods, and each locking part is positioned between the two push rods. Specifically, the two first locking portions 251 on the pushing rod 231 and the pushing rod 232 form a first locking portion group, the two second locking portions 252 form a second locking portion group, and the first locking portion group and the second locking portion group are both disposed on the mutually facing sides of the two pushing

rods

231 and 232. Here, the pushing mechanism 23 is composed of two pushing

rods

231 and 232 arranged in parallel, and preferably, the two pushing

rods

231 and 232 are respectively arranged at two opposite ends of the carrier 21, so that the carrier 21 can be driven to move in a balanced manner, and the problem that the carrier 21 is easily biased when being locked at a single point is avoided. Further, the first locking portion 251 and the second locking portion 252 are provided in a set so as to lock the carrier 21 more evenly. Meanwhile, the first locking part group and the second locking part group are arranged along the axial direction of the two

push rods

231 and 232, and are respectively used for locking the first carrier 211 and the second carrier 212, and the arrangement distance of the first locking part group and the second locking part group is related to the distance that the first carrier 211 and the second carrier 212 need to keep, that is, the first carrier 211 and the second carrier 212 can be respectively located at the first waiting position 201 and the first processing position 202, or respectively located at the first processing position 202 and the second waiting position 203.

Please refer to fig. 4, in combination with fig. 5a and 5b, wherein fig. 5a and 5b are schematic views of a locking portion according to a preferred embodiment of the present invention. Taking the first locking portion 251 as an example, the first locking portion 251 includes a triangular stop 2511 and a spring 2512, the stop 2511 and the pushing rod 231 are connected by the spring 2512, and the spring 2512 is used for pushing the stop 2511 to extend and retract in a direction perpendicular to the conveying direction; one side of the stopper 2511 is used for contacting with the carrier 21, and the other side is connected with the spring 2512; the stopper 2511 is used for locking the carrier 21 by being extended under the urging force of the spring 2512, and also for unlocking the carrier 21 by being moved relative to the push rod 231.

Preferably, the stop 2511 is in the shape of a right triangle, when in the extended state, one right-angled side of the stop 2511 is perpendicular to the pushing rod 231 and is arranged towards the first active position 31 towards the second active position 32, and the other right-angled side is parallel to the pushing rod 231 and is connected with the pushing rod 231 through the spring 2512, and the stop 2511 is preferably configured to move and retract towards the direction perpendicular to the pushing rod 231. Here, the moving direction of the stopper 2511 may be limited in such a manner that it can be retracted and extended only in a direction perpendicular to the push rod 231, for example, a rail or a guide strip may be provided on the stopper 2511. Thus, when the stopper 2511 receives an external force from left to right or from bottom to top in the drawing, it can be retracted upward in the drawing. Of course, the shape of the stop 2511 may also be preferably a right trapezoid (as shown in fig. 5 a), and two bottom edges thereof are preferably perpendicular to the pushing rod 231, which also achieves the effect of contracting when an external force is applied. Further, the stopper 2511 is not limited to be movable only toward the push rod 231 and contracted, but may preferably be rotated along the shaft (as shown in fig. 5 b), which also has an effect of contracting when an external force is applied. More preferably, the stop 2511 may be a metric standard, and a suitable stop and spring are selected according to different qualities of the carrier, so that the first locking portion 251 can be retracted without driving the carrier 21 to deflect when the pushing mechanism 23 moves from the second active position 32 to the first active position 31. In other embodiments, the locking portion may also be preferably an air cylinder stop, an electromagnet stop, or the like, which only needs to satisfy that the carrier can be pushed to move in one direction, but can be retracted elastically when moving in the opposite direction, which is not limited by the present invention. The elastic retraction refers to the elastic retraction when the carrier 21 is encountered and the carrier 21 is resisted, or the elastic retraction is actively performed in the whole process when the carrier moves in the reverse direction. Thus, when moving in the reverse direction, it is ensured that the movement and positioning of the carrier 21 are not affected. The specific structure and principle of the second locking portion 252 are the same as those of the first locking portion 251, and are not described again.

Further, the two

push rods

231, 232 are preferably connected by a connecting portion 230 and connected to the same driving mechanism 28. Or both pushing

rods

231, 232 are preferably connected to the same driving mechanism 28, wherein the driving mechanism 28 can synchronously push the two pushing

rods

231, 232 to move. For example, the drive mechanism 28 may include a synchronous twin cylinder or a synchronous twin electric cylinder. Here, the two pushing

rods

231 and 232 are connected by the connecting portion 230, so as to ensure the reliability of synchronous movement, and thus, the carrier 21 can be pushed more smoothly, and the consistency of the action time of the locking portions on both sides of the carrier 21 can be ensured. Similarly, when the synchronous double cylinders are selected, the two cylinders can share one air source for synchronous control, and the consistency of the action time can also be ensured.

Preferably, the carrier conveying device further comprises a detection mechanism, or a detection mechanism is provided from the outside; the detection mechanism is used for sensing the position information of the carrier 21 and sending signals to the driving mechanism 28, the processing device and the conveying platform 22.

Referring to fig. 3, the present embodiment further provides a vehicle transmission method, which includes:

step one S1: placing the pushing mechanism 23 in the first active position 31; at this time, the first carrier 211 is located at the first processing station 202, the external processing device processes the product carried by the first carrier 211, and the second carrier 212 is located at the first waiting station 201;

step two S2: the driving mechanism 28 drives the pushing mechanism 23 to move from the first movable position 31 to the second movable position 32, and synchronously drives the first carrier 211 on the first processing station 202 and the second carrier 212 on the first waiting station 201 to move, so that the first carrier 211 on the first processing station 202 moves out of the first processing station 202, and the second carrier 212 on the first waiting station 201 moves to the first processing station 202;

step three, S3: when the pushing mechanism 23 reaches the second movable position 32, the first carrier 211 moved out of the first processing position 202 is separated from the pushing mechanism 23; at this time, the first carrier 211 reaches the second waiting position 203, i.e. leaves the carrier conveyer and enters the next processing flow, e.g. can be driven by the moving section 222 to move to the next processing station;

step four S4: the driving mechanism 28 drives the pushing mechanism 23 to return from the second active position 32 to the first active position 31, and the pushing mechanism 23 is separated from the first carrier 211 at the first processing station 202 (i.e. does not move the first carrier 211);

step five S5: after the pushing mechanism 23 reaches the first moving position 31, a double-carrier conveying production process is completed, and then the above steps are repeated, and the remaining carriers flowing into the first waiting position 201 and the carriers flowing into the first processing position 202 are sequentially moved out of and into the first processing position 202 in the manner of the first step S1 to the fourth step S4.

Preferably, before performing step four S4, the vehicle transfer method further includes step S3 a: after the second carrier 212 on the first waiting position 201 reaches the first processing position 202, a detecting mechanism sends a first signal to the driving mechanism 28, and the driving mechanism 28 is configured to drive the pushing mechanism 23 to return from the second movable position 32 to the first movable position 31 after receiving the first signal. When the second carrier 212 reaches the first processing station 202, the detecting mechanism sends a first signal, which is a go-to-go signal indicating that the second carrier 212 has actually reached the first processing station 202, and the driving mechanism 28 starts to return from the second movable position 32 to the first movable position 31 after receiving the first signal, so as to ensure that the second carrier 212 and the first processing station 202 are accurately positioned.

Preferably, before performing step four S4, the vehicle transfer method further includes step S3 b: after the second carrier 212 on the first waiting position 201 reaches the first processing position 202, a detection mechanism sends a second signal to a processing device, and the processing device is used for processing the product carried by the second carrier 212 reaching the first processing position 202 after receiving the second signal. The second signal is similar to the first signal and is an in-position signal, which indicates that the second carrier 212 has actually reached the first processing station 202, and the processing device starts processing, so as to ensure that the processing device can precisely process the products carried by the second carrier 212.

Preferably, before performing step four S4, the vehicle transfer method further includes step S3 c: after the second carrier 212 on the first waiting position 201 reaches the first processing position 202, a detection mechanism sends a third signal to the transfer platform 22, and the transfer platform 22 is configured to transfer a third carrier 213 to move toward the first waiting position 201 after receiving the third signal. The third signal is a go-to-go signal, similar to the first signal, and indicates that the second carrier 212 has actually reached the first processing station 202, and then the third carrier 213 starts to flow into the first waiting station 201, so as to prevent the third carrier 213 from colliding with the preceding second carrier 212. More preferably, the transfer platform 22 may release the third carrier 213 by lowering the stopper, so that the third carrier 213 moves toward the first waiting position 201.

Preferably, before performing step S2, the vehicle transfer method further includes step S1 a: after a processing device finishes processing the product carried by the first carrier 211 on the first processing station 202, a detection mechanism sends a fourth signal to the driving mechanism 28; the driving mechanism 28 is configured to drive the pushing mechanism 23 to move from the first active position 31 to the second active position 32 after receiving the fourth signal. The fourth signal is a processing completion signal indicating that the product carried by the first carrier 211 is actually processed, and at this time, the driving mechanism 28 starts to drive the pushing mechanism 23 to move from the first movable position 31 to the second movable position 32, so as to ensure that the processing process of the product is not interfered and the precision of the product processing is ensured.

Preferably, after performing step four S4, the vehicle transfer method further includes step S4 a: after a third carrier 213 moves into the carrier transport device and reaches the first waiting position 201, a detecting mechanism sends a fifth signal to the driving mechanism 28; the driving mechanism 28 is configured to drive the pushing mechanism 23 to move from the first active position 31 to the second active position 32 after receiving the fifth signal. The fifth signal is a complete signal indicating that the third carrier 213 has actually reached the first waiting position 201, and at this time, the driving mechanism 28 starts to drive the pushing mechanism 23 to move from the first movable position 31 to the second movable position 32, so as to ensure that the pushing mechanism 23 can drive the third carrier 213 to enter the first processing position 202 to enter the processing procedure.

It should be understood that, the above-mentioned preferred steps S1a, S3a, S3b, S3c and S4a may be implemented individually or in combination, and the present invention is not limited thereto.

Preferably, in step three S3 and step four S4, the second carrier 212 is in a stationary state after reaching the first processing station 202; the third carrier 213 is also in a stationary state after reaching the first waiting position 201. Here, the stationary state may be stopped by the

stoppers

261 and 262 of the first waiting position 201 and the first processing position 202, or the stationary section 221 may stop the carrier by friction.

As can be seen from the above process of the carrier conveying method, when the time for the pushing mechanism 23 to move from one movable position to another movable position is T3, the time for processing the product on the first carrier 211 at the first processing position 202 only needs to pass T3, that is, the time for the interval T3 is only needed for the continuous processing at the same position, and particularly, when the moving speed of the pushing mechanism 23 is greater than the moving speed of the moving section 222 of the first waiting position 201, T3 is less than T1 compared to the prior art. Therefore, compared with the prior art, the continuous processing interval time on the same station is reduced by 2T1+2T2-T3, the production rhythm of a production line is effectively reduced, and the production efficiency is improved, for example, the moving section 222 is arranged according to the conventional commonly-used Lishile conveying system, the time can be reduced by about 5 seconds compared with the conventional interval time of about 10 seconds, and the effect is remarkable.

It should be noted that the stopper 2511 in the embodiment of the present invention is not limited to a standard member of a meter, but may also be a profile or a machined member, and the like, and only needs to be capable of pushing the carrier to move in one direction, but when moving in the opposite direction, the stopper can be elastically retracted, which is not limited in the present invention; in addition, the driving mechanism 28 may be a servo cylinder, an air cylinder or other structures with similar functions, which is not limited in the present invention.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims

1. A carrier conveying device comprises a conveying platform, wherein a waiting position and a processing position are sequentially arranged on the conveying platform along a conveying direction, and the carrier conveying device is characterized by further comprising a driving mechanism and a pushing mechanism which are arranged on one side of the conveying platform; the driving mechanism is connected with the pushing mechanism and used for driving the pushing mechanism to realize linkage of the two carriers; wherein the pushing mechanism has a first active position and a second active position;

the pushing mechanism is configured to be separated from the carrier on the processing station when the pushing mechanism moves from the second movable position to the first movable position;

the conveying platform is a belt conveying device; the belt conveying device comprises a belt, the belt is provided with a static section and a moving section, the static section is arranged at the processing station, and the moving section is arranged at the waiting station; the pushing mechanism is used for pushing the carrier on the waiting position to move into the static section and then keep static; the moving section is used for automatically conveying the carrier to the waiting position.

2. The carrier transport device of claim 1, wherein the stationary section is provided with a damping structure.

3. The carrier transport apparatus according to claim 1, wherein the processing station and/or the waiting station is provided with a stop which is retractable in a direction perpendicular to the transport direction for limiting a displacement of the corresponding carrier in the transport direction.

4. The carrier transport device of claim 1, wherein the pusher mechanism moves the carrier at a speed greater than a speed of movement of the moving section.

5. The carrier transport device of claim 1, wherein the push mechanism includes two retractable latches;

6. The carrier transport device according to claim 5, wherein the pushing mechanism further includes two pushing rods disposed in parallel along the transport direction, the two pushing rods are disposed on opposite sides of the transport platform, the driving mechanism drives the two pushing rods to move along the transport direction, and each pushing rod is provided with two locking portions disposed along the axial direction.

7. The carrier transport device according to claim 6, wherein the latching portions are formed in two sets, each set includes two latching portions symmetrically disposed on different push rods, and each set of the latching portions is located between two push rods.

8. The carrier transport device of claim 7, wherein the latching portion comprises a triangular shaped stop and a spring; the stop block is connected with the pushing rod through the spring; the spring is used for pushing the stop block to stretch and retract in the direction perpendicular to the conveying direction; one side of the stop block is used for contacting with the carrier, and the other side of the stop block is connected with the spring;

9. The carrier transport apparatus of claim 8, wherein the stop is shaped as a right triangle, one right-angled side of the stop being adapted to contact the carrier and the other right-angled side being connected to the spring and parallel to the push rod.

10. The carrier transport device of claim 6, wherein two push rods are connected by a connecting portion and connected to the same drive mechanism.

11. The carrier transport device of claim 6, wherein the two push rods are connected to a same driving mechanism, and the driving mechanism is configured to synchronously move the two push rods.

12. The carrier transport device of claim 11, wherein the drive mechanism comprises a synchronous double cylinder or a synchronous double electric cylinder.

13. A carrier transport method using the carrier transport apparatus according to any one of claims 1 to 12, comprising:

step five: and sequentially moving the rest carriers flowing into the waiting position and the rest carriers flowing into the processing position out of and into the processing position according to the mode of the first step to the fourth step.

14. The vehicle transfer method according to claim 13, further comprising, before performing step four:

15. The vehicle transfer method according to claim 13, further comprising, before performing step four:

16. The vehicle transfer method according to claim 13, further comprising, before performing step four:

17. The vehicle transfer method according to claim 13, further comprising, before performing step two:

18. The vehicle transfer method according to claim 13, further comprising, after performing step four: