CN218369989U - Workpiece limiting and conveying mechanism - Google Patents

Abstract

A workpiece limiting and conveying mechanism comprises a guide rod, a support plate, a limiting assembly and a driving part; the guide rod is horizontally arranged; the support plate is connected with the guide rod in a sliding manner, can slide into the guide rod or be separated from the guide rod, and is also provided with a limit groove for placing a workpiece; the limiting component is arranged on the carrier plate to limit the workpiece in the limiting groove; the driving part is arranged beside the guide rod and is synchronously connected with the carrier plate in a driving way; when the processing device is used, the processing device is arranged beside the middle part of the guide rod, a workpiece is placed on the carrier plate, and the workpiece is limited in the limiting groove through the limiting component; then, a guide block on the carrier plate slides into the guide rod, and the guide block is driven by the driving part to slide along the guide rod, so that the carrier plate and the workpiece move to a processing station for processing; after the workpiece is machined, the support plate is driven to move continuously through the driving part and is separated from the guide rod; the guide rod can be provided with a plurality of carrier plates at intervals and is synchronously driven by the driving part, so that the carrier plates move intermittently, and the welding continuity of workpieces is improved.

Description

Workpiece limiting and conveying mechanism

Technical Field

The utility model belongs to the technical field of the work piece transfer apparatus, especially, relate to a spacing transmission device of work piece.

Background

In the production and manufacturing process, a workpiece is often required to be transferred to a specific station for processing operations such as welding, cutting, silk-screen printing and the like; at present, a conveying belt is generally directly adopted to convey workpieces to a processing station, so that labor force can be effectively saved, and production efficiency is improved; however, in the actual use process, the mode of conveying the workpiece by the conveyor belt has the following defects:

firstly, workpieces are prone to shaking in the machining process, so that the workpieces cannot be machined normally, and production efficiency is affected.

Secondly, the placing position and the placing angle of the workpiece can not meet the placing requirement, so that the machining position of the workpiece is inaccurate, namely the machining precision is low, and the quality of a finished product is influenced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a spacing transmission device of work piece can solve the problem of proposing among the background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme:

a workpiece limiting and conveying mechanism comprises a guide rod, a support plate, a limiting assembly and a driving part, wherein the guide rod is horizontally arranged; the carrier plate is provided with a guide block which is in sliding connection with the guide rod, so that the carrier plate can slide into the guide rod or be separated from the guide rod; the support plate is also provided with a limiting groove for placing a workpiece; the limiting component is arranged on the carrier plate and used for limiting the side edge of the workpiece so as to fix the workpiece in the limiting groove; the driving part is arranged beside the guide rod and is in driving connection with the carrier plate which slides into the guide rod so as to drive the carrier plate to move along the guide rod.

Preferably, the limiting assembly comprises a pressing block and an elastic piece, a moving column is vertically arranged on the carrier plate, and a supporting plate is arranged at one end, far away from the carrier plate, of the moving column; the pressing block is positioned above the limiting groove, and a processing groove corresponding to the limiting groove is formed in the pressing block; the pressing block is further connected with the moving column in a sliding mode so that the pressing block is far away from or attached to the support plate; the elastic piece is arranged on the abutting plate, and one end of the elastic piece abuts against the pressing block; when the pressing block abuts against the support plate, the elastic piece is in a conventional state, and the pressing block abuts against and limits the edge of the workpiece.

Preferably, the elastic part is a spring, the spring is sleeved on the movable column, one end of the spring is installed on the abutting plate, and the other end of the spring abuts against the pressing block.

Preferably, the lifting device further comprises two lifting parts, wherein the two lifting parts are arranged on the two sides of the two ends of the guide rod respectively; the lifting parts can drive the corresponding pressing blocks one by one to be far away from the corresponding carrier plate so as to expose the limiting grooves on the carrier plate.

Preferably, the lifting part comprises a top plate and a cylinder, the cylinder is vertically installed below the guide rod, the top plate is installed on a telescopic shaft of the cylinder, and a plurality of top posts are also vertically arranged on the top plate; the side edge of the pressing block protrudes out of the carrier plate; the cylinder can drive the top column to move upwards to abut against the side edge of the pressing block, so that the pressing block is far away from the carrier plate; the cylinder can drive the ejection column to move downwards to be far away from the side edge of the pressing block, so that the elastic piece drives the pressing block to be attached to the support plate.

Preferably, the processing tank is of U-shaped design.

Preferably, the driving part comprises servo motors, toothed belts, driving wheels and driven wheels, at least two driven wheels are arranged, the two driven wheels are respectively and rotatably arranged on the bracket and are arranged at the sides of the two ends of the guide rod, the toothed belts are wound on the two driven wheels, and the carrier plate is provided with teeth meshed with the toothed belts; the servo motor is installed on the support, the driving wheel is installed on an output shaft of the servo motor, and the driving wheel is meshed with the toothed belt.

Preferably, a partition plate is arranged on the support and is vertically installed and parallel to the guide rod so as to abut against one side, close to the guide rod, of the toothed belt.

Preferably, the device further comprises a detection piece, wherein the detection piece is arranged below the guide rod; the bottom of the limiting groove is also provided with a detection groove communicated with the outside, and the detection light of the detection piece can penetrate through the corresponding detection groove to the limiting groove so as to detect whether a workpiece exists in the support plate on the guide rod.

(III) advantageous effects

The utility model provides a workpiece limiting and conveying mechanism, through designing the guide rod to limit the guide block on the support plate, the support plate can move on the guide rod accurately and stably, the change of the placing position and the placing angle of the workpiece caused by the deviation of the position of the support plate is avoided, the processing precision is improved, and the quality of the finished product is ensured; the work piece can be placed to the spacing groove, and spacing groove cooperation spacing subassembly uses and can carry out accurate restriction to the work piece fixed, avoids the work piece to take place to rock in the course of working, ensures that the work piece can normally process, improves production efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 shows a first schematic view of installation and use of the present invention;

FIG. 2 shows an enlarged view at A in FIG. 1;

fig. 3 shows a second schematic view of installation and use of the present invention;

fig. 4 shows a schematic diagram of the overall structure of the present invention;

FIG. 5 shows an enlarged view at B in FIG. 4;

fig. 6 shows a schematic diagram of the overall structure of the present invention;

FIG. 7 shows an enlarged view at C in FIG. 6;

fig. 8 shows a schematic diagram of the overall structure of the present invention;

fig. 9 shows a first structural diagram of the support plate limit, the position assembly and the lifting part of the present invention;

fig. 10 shows a second schematic structural diagram of the support plate restraint, the support assembly and the lifting portion of the present invention. In the figure: the device comprises a support 1, a partition 11, a guide rod 2, a support plate 3, a guide block 30, a limiting groove 31, a detection groove 310, a moving column 32, a pushing plate 320, teeth 33, a limiting component 4, a pressing block 41, a machining groove 411, an elastic part 42, a driving part 5, a servo motor 51, a driving wheel 52, a toothed belt 53, a driven wheel 54, a lifting part 6, a top plate 61, a jack 610, an air cylinder 62, a detection part 7 and a workpiece P.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-5, a workpiece limiting and conveying mechanism comprises a guide rod 2, a carrier plate 3, a limiting assembly 4 and a driving part 5, wherein the guide rod 2 is horizontally arranged; the carrier plate 3 is provided with a guide block 30 which is connected with the guide rod 2 in a sliding way, so that the carrier plate 3 can slide into the guide rod 2 or be separated from the guide rod 2; a limiting groove 31 for placing a workpiece P is also arranged on the carrier plate 3; the limiting component 4 is mounted on the carrier plate 3 and used for limiting the side edge of the workpiece P so as to fix the workpiece P in the limiting groove 31; the driving part 5 is disposed beside the guide bar 2, and the driving part 5 is drivingly connected to the carrier plate 3 sliding into the guide bar 2 to drive the carrier plate 3 to move along the guide bar 2.

The workpiece limiting and conveying mechanism in the utility model is generally installed beside the processing equipment 8 for use, and in order to facilitate understanding, in the embodiment of the utility model, the processing equipment 8 is arranged between the first end and the second end of the guide rod 2, and the position is regarded as a processing station; the specific use mode is as follows:

firstly, placing a workpiece P in a limiting groove 31 of a carrier plate 3, and limiting the corresponding workpiece P in the corresponding limiting groove 31 through a corresponding limiting component 4 to avoid the workpiece P from shaking;

then, sliding the guide blocks 30 on the carrier plate 3 into the guide rods 2 one by one from the first ends of the guide rods 2, starting the driving part 5 to drive the carrier plate 3 to slide along the guide rods 2, when the carrier plate 3 moves to a processing station, suspending the operation of the driving part 5, and starting the processing equipment 8 to weld the corresponding workpieces P; after the workpiece P is processed, the driving part 5 is started to drive the carrier plate 3 to move continuously and separate from the second end of the guide rod 2;

and repeating the steps, continuously putting the carrier plate 3 with the workpiece P into the first end of the guide rod 2, taking out the carrier plate 3 from the second end of the guide rod 2, and taking down the machined workpiece P.

To sum up, the utility model designs the guide rod 2 to limit the guide block 30 on the support plate 3, so that the support plate 3 can move on the guide rod 2 accurately and stably, thereby avoiding the change of the placing position and the placing angle of the workpiece P caused by the shift of the position of the support plate 3, improving the processing precision and ensuring the quality of the finished product; work piece P can be placed to spacing groove 31, and spacing groove 31 cooperation spacing subassembly 4 uses and can carry out accurate restriction to work piece P fixed, avoids work piece P to take place to rock in the course of working, ensures that work piece P can normally process, improves production efficiency.

It should be noted that, in order to improve the welding continuity of the workpiece P, in the actual use process, the driving portion 5 may also drive the plurality of carrier plates 3 synchronously; the specific operation mode is as follows:

firstly, placing a first carrier plate 3 with a workpiece P placed at a first end of a guide rod 2, starting a driving part 5, moving the first carrier plate 3 to a specific distance in the guide rod, and then closing the driving part 5, wherein the first end of the guide rod 2 is in an idle state;

then, placing the second carrier plate 3 with the workpiece P placed thereon at the first end of the guide rod 2, and then starting the driving part 5 again, so that the first carrier plate 3 and the second carrier plate 3 can be driven to synchronously move along the guide rod 2; in this process, the distance between the first carrier plate 3 and the processing equipment 8 is shortened, and the second carrier plate 3 covers the original position of the first carrier plate 3;

operating according to the method, namely placing a plurality of carrier plates 3 with equal intervals on the guide rod 2 at the front side of the processing equipment 8; the plurality of carrier plates 3 are driven to move intermittently by the driving part 5, so that the workpieces P on the plurality of carrier plates 3 are sequentially processed corresponding to the processing equipment 8, and are sequentially separated from the second end of the guide rod 2 after being processed; when one carrier 3 is separated from the guide rod 2, a new carrier 3 needs to be placed at the first end of the guide rod in time to ensure the recycling of the carrier 3.

Therefore, this mode of operation of installation can be so that have a plurality of support plates 3 on the guide arm 2 all the time in advance, and the drive division 5 can order about a plurality of support plates 3 intermittent type nature removal and process one by one, make full use of work piece P's processing time difference, improve work piece P's processing continuity to improve work efficiency.

In practical operation, the carrier 3 can be taken and placed manually, or related mechanical structures can be provided, for example, mechanical hands are designed at the first end and the second end of the guide rod 2 to respectively slide the carrier 3 into the first end of the guide rod 2, or take away the carrier 3 separated from the second end of the guide rod 2; therefore, the present invention is not limited thereto.

Referring to fig. 5-10, the limiting component 4 includes a pressing block 41 and an elastic member 42, a moving column 32 is vertically disposed on the carrier plate 3, and a pressing plate 320 is disposed on an end of the moving column 32 away from the carrier plate 3; the pressing block 41 is positioned above the limiting groove 31, and the pressing block 41 is provided with a processing groove 411 corresponding to the limiting groove 31; the pressing block 41 is also connected with the moving column 32 in a sliding manner, so that the pressing block 41 is far away from or attached to the carrier plate 3; the elastic member 42 is mounted on the abutting plate 320, and one end of the elastic member 42 abuts against the pressing block 41; when the pressing piece 41 abuts against the carrier plate 3, the elastic member 42 is in a normal state, and the pressing piece 41 abuts against the edge of the regulating workpiece P.

Specifically, under normal conditions, the pressing block 41 abuts against the carrier plate 3, and the elastic member 42 is in a normal state;

when a workpiece P needs to be placed in the limiting groove 31, the pressing block 41 is firstly shifted to move upwards, so that the pressing block 41 is far away from the support plate 3, and in the process, the elastic piece 42 stores energy and compresses; after the workpiece P is placed, the pressing block 41 is loosened, and at this time, the elastic member 42 releases energy to recover and drives the pressing block 41 to move downwards, so that the pressing block 41 is attached to the support plate 3 and abuts against the edge of the limiting workpiece P, the workpiece P can be limited and fixed in the limiting groove 31, and the part to be processed of the workpiece P is exposed from the processing groove 411;

similarly, when the processed workpiece P needs to be taken out, the pressing block 41 needs to be shifted upwards to make the pressing block 41 be away from the carrier plate 3 to expose the workpiece P, the pressing block 41 is released after the workpiece P is taken out, and the pressing block 41 is attached to the carrier plate 3 again under the action of the elastic member 42.

In summary, the pressing block 41 and the elastic element 42 are used in cooperation with the limiting groove 31, so that the horizontal position and the vertical position of the workpiece P can be limited at the same time, and the stability of the workpiece P is improved; the design of the elastic piece 42 enables the pressing block 41 to be away from and attached to the carrier plate 3 quickly, and the workpiece P is convenient to take and place; the design of the processing tank 411 can provide a processing space for the workpiece P, so as to facilitate the processing of the workpiece P by the processing equipment 8 and the like.

Referring to fig. 5-10, the elastic member 42 may be a rubber block or a spring, and the like, which is preferable in the present invention, the spring is sleeved on the moving column 32, one end of the spring is mounted on the supporting plate 320, and the other end of the spring abuts against the pressing block 41; the spring will compress along with the upward movement of the pressing block 41, and will automatically drive the pressing block 41 to move downward to adhere to the carrier 3.

Referring to fig. 4-10, based on the above description, no matter place work piece P in spacing groove 31 or take out work piece P from spacing groove 31, all need stir briquetting 41 and shift up and keep away from support plate 3, for realizing this action, can artifical manual go on, and the artifical in-process of stirring briquetting 41 has the possibility of taking off one's hand, leads to briquetting 41 to receive elastic component 42 to influence to move down and press and decrease work piece P, for this reason, the utility model discloses in still including lifting portion 6, lifting portion 6 is equipped with two and installs respectively in the both ends side of guide arm 2, and two steerable corresponding briquetting 41 that correspond of lifting portion keep away from corresponding support plate 3.

Specifically, when the carrier plate 3 moves from the first end of the guide rod 2 and corresponds to the lifting part 6 located beside the first end of the guide rod 2, the lifting part controls the corresponding pressing block 41 to be far away from the corresponding carrier plate 3, so as to facilitate the placement of the workpiece P;

when the carrier plate 3 is close to the second end of the guide rod 2 and corresponds to the lifting part 6 located beside the second end of the guide rod 2, the lifting part controls the corresponding pressing block 41 to be far away from the corresponding carrier plate 3, so as to conveniently take out the processed workpiece P.

Referring to fig. 4-10, the lifting part 6 includes a top plate 61 and a cylinder 62, the cylinder 62 is vertically installed below the guide rod 2, the top plate 61 is installed on a telescopic shaft of the cylinder 62, and a plurality of top pillars 610 are also vertically arranged on the top plate 61; the side of the pressing block 41 protrudes out of the carrier plate 3; the cylinder 62 can drive the top pillar 610 to move upwards to abut against the side edge of the pressing block 41, so that the pressing block 41 is far away from the carrier plate 3; the cylinder 62 can also drive the top pillar 610 to move downward and away from the side edge of the pressing block 41, so that the elastic member 42 drives the pressing block 41 to adhere to the carrier plate 3.

In the embodiment of the present invention, for convenience of understanding, the lifting portion 6 located at the side of the first end of the guide rod 2 is referred to as a first lifting portion 6, and the lifting portion 6 located at the side of the second end of the guide rod 2 is referred to as a second lifting portion 6:

wherein, the design of first lifting portion 6 makes things convenient for placing of work piece P:

specifically, after the carrier plate 3 slides into the first end of the guide rod 2, the driving part 5 drives the carrier plate 3 to move right above the first lifting part 6, at this time, the driving part 5 stops operating, the cylinder 62 of the first lifting part 6 starts and drives the top pillar 610 to move upwards to abut against the side edge of the pressing block 41 corresponding to the carrier plate 3, so that the pressing block 41 is far away from the carrier plate 3 and exposed out of the limiting groove 31, and in the process, the elastic part 42 stores energy and compresses; after the workpiece P is placed in the limiting groove 31, the cylinder 62 of the first lifting part 6 is controlled to operate to drive the top pillar 610 to move downwards and away from the side edge of the pressing block 41, and in the process, the elastic part 42 releases energy to recover and drive the pressing block 41 to be attached to the support plate 3, so that the side edge of the workpiece P can be pressed; after the limitation of the workpiece P is completed, the driving part 5 is started to drive the carrier plate 3 to move to the processing station.

Similarly, the second lifting part 6 is designed to facilitate the taking out of the workpiece P:

specifically, after the workpiece P on the carrier plate 3 is processed, the driving part 5 drives the carrier plate 3 to move close to the second end of the guide rod 2 and to be located right above the second lifting part 6, and at this time, the corresponding pressing block 41 can be driven by the second lifting part 6 to be away from the carrier plate 3, so that the workpiece P can be conveniently taken out; after the workpiece P is taken out, the pressing block 41 is attached to the carrier plate 3 through the elastic member 42, and then the driving portion 5 is started to drive the carrier plate 3 to move continuously and separate from the second end of the guide rod 2.

It should be noted that if a plurality of carrier plates 3 with equal intervals are placed on the guide rod 2, in order to ensure the welding continuity, the following operations need to be performed:

firstly, when the processing equipment 8 processes a workpiece P, a carrier plate 3 needs to be placed at the first end of a guide rod 2;

secondly, when the processing equipment 8 finishes processing a workpiece P, the driving part 5 drives the plurality of support plates 3 to synchronously move, and in the process, the support plate 3 positioned at the second end of the guide rod 2 is separated from the guide rod 2; the carrier plate 3 positioned on the processing station moves towards the second end of the guide rod 2; the carrier plate 3 which is positioned at the front side of the processing station and is provided with the workpiece moves to the lower part of the processing equipment 8; the carrier plate 3 positioned at the first end of the guide rod 2 moves and corresponds to the lifting part 6 positioned at the first end of the guide rod 2;

then, while the processing device 8 processes the workpiece P on the current carrier plate 3, the lifting part 6 and the corresponding elastic part 42 are matched to control the corresponding pressing block 41 to move up and down to complete the placement of the workpiece P; therefore, the time for placing the workpiece P is generally equal to or shorter than the time for processing the workpiece P, and can be understood by referring to the drawings.

Referring to fig. 2-5, the processing tank 411 is U-shaped, which facilitates the processing equipment 8, tools, etc. to enter the processing tank 411 for processing the workpiece P in the limiting groove 31.

Referring to fig. 1 to 5, the driving portion 5 includes a servo motor 51, a toothed belt 53, a driving wheel 52 and at least two driven wheels 54, the two driven wheels 54 are rotatably mounted on the bracket 1 and disposed at two ends of the guide rod 2, the toothed belt 53 is wound on the two driven wheels 54, and the carrier plate 3 is provided with teeth 33 engaged with the toothed belt 53; the servo motor 51 is mounted on the bracket 1, the driving wheel 52 is mounted on the output shaft of the servo motor 51, and the driving wheel 52 is in meshed connection with the toothed belt 53.

Specifically, the two driven wheels 54 are designed to fix and spread the toothed belt 53; when the device is used, the servo motor 51 is started to drive the driving wheel 52 to rotate, so that the toothed belt 53 can be driven to move, and the plurality of support plates 3 can move along the guide rod 2 synchronously for the same distance.

Wherein, servo motor 51 belongs to prior art, and it is one kind and can predetermine the number of turns of rotating, and can do the motor that the interval opened and shut down, stops after conveniently controlling drive wheel 52 to rotate specific number of turns, consequently can drive support plate 3 and accurately correspond and remove to machining-position department.

Referring to fig. 1 and 8, the bracket 1 is provided with a partition 11, and the partition 11 is vertically installed and designed parallel to the guide rod 2 to abut against one side of the toothed belt 53 close to the guide rod 2.

Specifically, the partition plate 11 abuts against one side of the toothed belt 53, so that support is provided for the toothed belt 53, the toothed belt 53 is prevented from being deformed to separate from the teeth 33 on the carrier plate 3 in the moving process, the toothed belt 53 is ensured to be always meshed with the teeth 33, and the running stability of the carrier plate 3 is improved.

Referring to fig. 4-7, based on the above description, in order to ensure welding continuity, the time for placing the workpiece P needs to be equal to or shorter than the time for processing the workpiece P, and the time for welding the workpiece P is generally shorter, which may shorten the time for placing the workpiece P, resulting in a possibility of leakage during the process of placing the workpiece P in the carrier plate 3, which may affect the normal operation of the processing equipment 8; in order to solve the problem, the utility model also comprises a detection part 7, and the detection part 7 is arranged below the guide rod 2; the bottom of the limiting groove 31 is further provided with a detection groove 310 communicated with the outside, and the detection light of the detection piece 7 can penetrate through the corresponding detection groove 310 to the limiting groove 31 to detect whether the workpiece P exists in the support plate 3 on the guide rod 2.

When the carrier 3 moves along the guide rod 2 and corresponds to the detection part 7, the detection part 7 detects whether the workpiece P exists in the limiting groove 31 through the detection groove 310, if the workpiece P exists in the limiting groove 31, the detection part 7 does not send a signal to the processing equipment 8, and the processing equipment 8 normally works; if the workpiece P is detected not to exist in the limiting groove 31, a signal is sent to the processing equipment 8, so that the processing equipment 8 cannot work when the carrier plate 3 without the workpiece P moves to the processing equipment 8; wherein, the detecting member 7 can adopt an infrared sensor.

Further, the utility model discloses in can also be external with 7 electric connection's of detection piece pronunciation unit, pronunciation unit can adopt bee calling organ, if detection piece 7 detects when not having work piece P in the spacing groove 31, then send signal to pronunciation unit and make it sound to the suggestion workman supplements work piece P.

It should also be noted that while embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the application.

Claims (9)

1. A workpiece limiting and conveying mechanism is characterized by comprising a workpiece limiting and conveying mechanism;

a support (1);

the guide rod (2), the said guide rod (2) is installed on said support (1) horizontally;

the guide device comprises a support plate (3), wherein a guide block (30) connected with the guide rod (2) in a sliding manner is arranged on the support plate (3), so that the support plate (3) can slide into the guide rod (2) or be separated from the guide rod (2); the carrier plate (3) is also provided with a limiting groove (31) for placing a workpiece (P);

the limiting component (4) is arranged on the carrier plate (3), and is used for limiting the side edge of the workpiece (P) so as to fix the workpiece (P) in the limiting groove (31);

the driving part (5) is installed on the support (1), and the driving part (5) is in driving connection with the carrier plate (3) sliding into the guide rod (2) so as to drive the carrier plate (3) to move along the guide rod (2).

2. The workpiece limiting and conveying mechanism according to claim 1, wherein the limiting assembly (4) comprises a pressing block (41) and an elastic member (42), a moving column (32) is vertically arranged on the carrier plate (3), and a pressing plate (320) is arranged at one end of the moving column (32) far away from the carrier plate (3); the pressing block (41) is positioned above the limiting groove (31), and a processing groove (411) corresponding to the limiting groove (31) is formed in the pressing block (41); the pressing block (41) is also connected with the moving column (32) in a sliding manner, so that the pressing block (41) is far away from or attached to the carrier plate (3); the elastic piece (42) is arranged on the abutting plate (320), and one end of the elastic piece (42) abuts against the pressing block (41); when the pressing block (41) abuts against the carrier plate (3), the elastic piece (42) is in a normal state, and the pressing block (41) abuts against and limits the edge of the workpiece (P).

3. The workpiece limiting and conveying mechanism of claim 2, wherein the elastic member (42) is a spring, the spring is sleeved on the moving column (32), one end of the spring is mounted on the abutting plate (320), and the other end of the spring abuts against the pressing block (41).

4. The workpiece limiting and conveying mechanism according to claim 2, further comprising two lifting portions (6), wherein the two lifting portions (6) are respectively arranged at the sides of two ends of the guide rod (2); the lifting parts (6) can drive the corresponding pressing blocks (41) to be away from the corresponding carrier plates (3) one by one so as to expose the limiting grooves (31) on the carrier plates (3).

5. The workpiece limiting and conveying mechanism of claim 4, wherein the lifting part (6) comprises a top plate (61) and a cylinder (62), the cylinder (62) is vertically installed below the guide rod (2), the top plate (61) is installed on a telescopic shaft of the cylinder (62), and a plurality of top columns (610) are further vertically arranged on the top plate (61); the side edge of the pressing block (41) protrudes out of the carrier plate (3); the air cylinder (62) can drive the top column (610) to move upwards to abut against the side edge of the pressing block (41), so that the pressing block (41) is far away from the carrier plate (3); the cylinder (62) can drive the ejection column (610) to move downwards to be far away from the side edge of the pressing block (41), so that the elastic piece (42) drives the pressing block (41) to be attached to the carrier plate (3).

6. A workpiece limiting and conveying mechanism according to claim 5, characterized in that the processing tank (411) is of U-shaped design.

7. The workpiece limiting and conveying mechanism according to claim 1, wherein the driving portion (5) comprises a servo motor (51), at least two driving wheels (52), toothed belts (53) and at least two driven wheels (54), the two driven wheels (54) are rotatably mounted on the support (1) and are arranged beside two ends of the guide rod (2), the toothed belts (53) are wound on the two driven wheels (54), and the carrier plate (3) is provided with teeth (33) meshed and connected with the toothed belts (53); the servo motor (51) is installed on the support (1), the driving wheel (52) is installed on an output shaft of the servo motor (51), and the driving wheel (52) is meshed with the toothed belt (53).

8. The workpiece limiting and conveying mechanism according to claim 7, characterized in that a partition plate (11) is arranged on the bracket (1), and the partition plate (11) is vertically installed and is designed in parallel to the guide rod (2) so as to abut against one side, close to the guide rod (2), of the toothed belt (53).

9. The workpiece limiting and conveying mechanism according to claim 1, further comprising a detecting piece (7), wherein the detecting piece (7) is installed below the guide rod (2); the bottom of the limiting groove (31) is also provided with a detection groove (310) communicated with the outside, and detection light of the detection piece (7) can penetrate through the corresponding detection groove (310) to the limiting groove (31) so as to detect whether a workpiece (P) exists in the support plate (3) on the guide rod (2).

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