CN120547769A

CN120547769A - A reinforcement plate laminating, positioning and dust removal device

Info

Publication number: CN120547769A
Application number: CN202510807944.8A
Authority: CN
Inventors: 李柏毅; 王基禄; 张汉武; 李智
Original assignee: DONGGUAN GUANGYANG XINGYE ELECTRONIC FITTINGS CO LTD
Current assignee: DONGGUAN GUANGYANG XINGYE ELECTRONIC FITTINGS CO LTD
Priority date: 2024-08-28
Filing date: 2024-08-28
Publication date: 2025-08-26
Also published as: CN119012533A; CN120751591B; CN120751591A; CN119012533B

Abstract

The present invention discloses a reinforcement plate laminating positioning dust removal mechanism, which includes a fixed plate fixed on a workbench, a positioning frame with a hollow center and a square structure provided on the top of the fixed plate, the four side surfaces inside the positioning frame are all inclined, and the front and rear opposite sides of the positioning frame are provided with movable grooves, and the left and right opposite sides of the positioning frame are provided with placement grooves, and also includes an electrostatic dust removal rod, both ends of the electrostatic dust removal rod are provided with connecting rods that slide and plug in correspondingly to the two movable grooves of the positioning frame. The present invention is used for plate reinforcement lamination, realizes automatic positioning and position adjustment when the plate moves to the receiving plate, improves lamination accuracy, and realizes reinforcement lamination of multiple different reinforcement plates at different positions of the same plate at the same time, and its dust suction sticker can absorb and collect dust that falls after the electrostatic dust removal rod stops working, which is simple and practical.

Description

Reinforcing plate laminating location dust collector

Technical Field

The invention relates to the technical field of plate processing, in particular to a reinforcing plate attaching, positioning and dedusting device.

Background

Flexibility has been widely used in the fields of smart phones, wearable devices, and the like due to the characteristics of flexibility, thinness, and light weight. However, further development of applications of FPCs is still limited by the drawbacks of flexibility and insufficient connection reliability. In order to improve the performance and reliability of FPC, a reinforcement bonding technique is widely used, and its main principle is to bond a reinforcement material, such as a film material or a reinforcing material, at a key position of FPC to enhance the strength, rigidity and bending resistance thereof.

The existing FPC reinforcement laminating mode mainly relies on manual operation, has the problems of low efficiency, high cost and incapability of realizing accurate positioning, repeatability and consistency, and is difficult to meet the production requirements of high-end electronic products. At present, the FPC reinforcement adhesion technology mainly relies on manual operation, and operating efficiency is low, and working strength is big, and is difficult to guarantee laminating precision and uniformity to current FPC reinforcement laminating equipment mostly can only strengthen FPC's single position, can't satisfy the demand of carrying out the reinforcement laminating to a plurality of different positions. Most of the existing automation devices only realize partial automation functions, such as automatic conveying or positioning, and lack full-automatic reinforcement laminating solutions.

The reinforcing plate laminating positioning dust removing device is used for reinforcing lamination to realize reinforcing lamination to different positions of the same FPC board simultaneously.

Disclosure of Invention

The invention provides an FPC board reinforcing and bonding device and an FPC board bonding method based on the bonding device, which are used for solving the problems in the background technology.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a stiffening plate laminating location dust removal mechanism, its characterized in that, location dust removal mechanism is including fixing the fixed plate on the workstation, and the fixed plate top is equipped with middle part cavity and is square structure's locating frame, and the inboard four sides of locating frame are the inclined plane setting to relative both sides limit is equipped with the shifting chute around the locating frame, and relative both sides limit is equipped with the standing groove about the locating frame, still includes electrostatic precipitator stick, and electrostatic precipitator stick's both ends all are equipped with the connecting rod and correspond two shifting chute slip grafting of locating frame respectively.

The workbench is provided with an electric telescopic rod I, the telescopic end of the electric telescopic rod I is fixedly connected with a similar connecting rod, the telescopic direction of the electric telescopic rod I is the same as the moving direction of the connecting rod in the moving groove, the bottom surface in the placing groove is provided with a dust collecting groove, a dust collection paste is stuck in the dust collecting groove, and the electrostatic dust collection rod and the electric telescopic rod I are connected with a controller.

The dust removing device also comprises a lifting mechanism, wherein the top of the lifting mechanism is used for bearing the plate and can pass through the hollow part of the positioning dust removing mechanism to lift.

Elevating system is including fixing a plurality of spring base on the workstation, all is equipped with the expansion spring in each spring base, and the top of each expansion spring all is fixed with electric telescopic handle two, and electric telescopic handle two's upper end is the flexible end to electric telescopic handle two's flexible end is connected with jointly and accepts the board, and the four sides of accepting the board all are shorter than the inboard four sides of locating frame, accept the board top and still be equipped with a plurality of contact sensor, electric telescopic handle two, contact sensor all with controller electric connection.

And the lifting mechanism is arranged right above the adjustable laminating mechanism, a plurality of groups of winding drum groups are arranged on two sides of the adjustable laminating mechanism, the winding drum groups are respectively wound with reinforcing plate coiled materials, the pressed surface of the reinforcing plate coiled materials is contacted with the punching end of the adjustable laminating mechanism, and the lifting mechanism can move the plate close to the adjustable laminating mechanism through lifting to carry out reinforcing plate laminating processing.

The adjustable laminating mechanism comprises a groove plate, a supporting plate is arranged on the workbench, the groove plate is fixed on the upper portion of the supporting plate, a plurality of strip-shaped grooves are formed in the groove plate, sliding rods are slidably mounted in the strip-shaped grooves, and an adjusting box is fixed below the strip-shaped grooves and extends out of the lower ends of the sliding rods.

A hydraulic rod is inserted into the communicating groove on the bottom surface of the adjusting box, a compression nut is arranged in the communicating groove on the side surface of the adjusting box and connected with the end part of the hydraulic rod, and a punch is arranged at the bottom of the hydraulic rod.

The reel group is including receiving reel, coiled material section of thick bamboo and transition section of thick bamboo, and coiled material section of thick bamboo is located the same side of adjustable laminating mechanism with the transition section of thick bamboo to the coiling section of thick bamboo is located the opposite side of adjustable laminating mechanism with it, and the stiffening plate coiled material is wound on coiled material section of thick bamboo, and the stiffening plate coiled material is walked around transition section of thick bamboo and is wound on receiving the reel.

The workbench is fixedly provided with a fixing frame, the fixing frame is provided with a plurality of bearing seats, bearing rods are connected between the bearing seats and a supporting plate, each winding drum, each coiled material drum and each transition drum are respectively connected with corresponding bearing rods, the supporting plate is provided with a plurality of driving motors, the bearing rods connected with the winding drums are in one-to-one correspondence with the driving motors, and the driving motors are electrically connected with a controller.

The workbench on one side of the receiving plate is provided with a feeding conveyer belt, the workbench on the other side of the receiving plate is provided with a discharging conveyer belt, the feeding end of the feeding conveyer belt is higher than the positioning frame, and the feeding conveyer belt and the discharging conveyer belt are electrically connected with the controller.

Compared with the prior art, the invention has the following beneficial effects:

Through this stiffening plate laminating location dust removal mechanism for FPC board reinforcement laminating realizes automatic positioning adjustment position when the FPC board removes to accepting the board, improve the laminating degree of accuracy all contact sensor all with the FPC board contact, indicate promptly that the accurate transport of FPC board position is to accepting on the board, otherwise show that the position of FPC board appears the deviation, remind the staff to look over through the controller, play automated inspection's effect, hydraulic stem and drift accessible intercommunication groove and strip groove remove in a plurality of angles of plane position, realize carrying out the reinforcement laminating of multiple different stiffening plates to the different positions of same FPC board simultaneously, its dust absorption subsides can adsorb the dust that falls down after stopping work to electrostatic precipitator stick, prevent that the dust from scattering, telescopic spring provides the cushioning effect when laminating to FPC board and stiffening plate coiled material for the drift, prevent to crush FPC board, whole device simple structure, simply realize detecting, the location, dust removal, laminating multiple process in an organic wholely.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the portion A of the present invention;

FIG. 3 is a schematic view of an adjustable attaching mechanism according to the present invention;

FIG. 4 is a schematic view of the elevating mechanism according to the present invention;

1. The device comprises a workbench, a supporting plate, a 3 positioning dust removing mechanism, a 4 lifting mechanism, a5 adjustable attaching mechanism, a 6 winding drum group, a 7 driving motor, a 8 winding drum, a 9 transition drum, a 10 winding drum, a 11 bearing rod, a 12, a fixing frame, a 13 reinforcing plate coiled material, a 14 feeding conveying belt, a 15 discharging conveying belt, a 16, a fixing plate, a 17 positioning frame, a 18, a moving groove, a 19, a placing groove, a 20, an electrostatic dust removing rod, a 21, a connecting rod, a 22, a first electric telescopic rod, a 23, a groove plate, a 24, a strip-shaped groove, a 25, a slide bar, a 26, an adjusting box, a 27, a communicating groove, a 28, a hydraulic rod, a 29, a compression nut, a 30, a punch, a 31, a spring base, a 32, a second electric telescopic rod, a 33, a telescopic spring, a 34, a bearing plate, a 35 and a contact sensor.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-4, a stiffening plate laminating location dust removal mechanism for FPC panel reinforcement laminating, including workstation 1, be equipped with location dust removal mechanism 3 and elevating system 4 on the workstation 1, the middle part of location dust removal mechanism 3 is the cavity setting, elevating system 4 tops is used for bearing the FPC board and can pass the cavity position lift of location dust removal mechanism 3, location dust removal mechanism 3 is used for detecting location and dust removal to the panel on the elevating system 4, still be equipped with adjustable laminating mechanism 5 directly over the elevating system 4, adjustable laminating mechanism 5 both sides are equipped with multiunit reel group 6, each reel group 6 is last to be rolled up and to have stiffening plate coiled material 13 and stiffening plate coiled material 13 pressurized face to contact with adjustable laminating mechanism 5's punching press end, elevating system 4 accessible lift is moved the FPC board and is close to adjustable laminating mechanism 5 and carries out the stiffening plate laminating processing.

The positioning dust removing mechanism 3 comprises a fixed plate 16 fixed on the workbench 1, a positioning frame 17 with a square structure and hollow in the middle is arranged at the top of the fixed plate 16, four inner side sides of the positioning frame 17 are inclined surfaces, moving grooves 18 are formed in the front side and the rear side of the positioning frame 17, and placing grooves 19 are formed in the left side and the right side of the positioning frame 17. The hollow part of the positioning frame 17 can be replaced by a square positioning frame 17, a concave positioning frame 17 and other special-shaped positioning frames for adapting to matching positioning of different FPC boards.

Still include electrostatic precipitator stick 20, electrostatic precipitator stick 20's both ends all are equipped with connecting rod 21 and correspond respectively two removal grooves 18 slip grafting of locating frame 17, be equipped with electric telescopic handle one 22 on workstation 1, electric telescopic handle one 22's flexible end and similar connecting rod 21 fixed connection, electric telescopic handle one 22's flexible direction is the same with the direction of movement of connecting rod 21 in removal groove 18, the bottom surface is equipped with the dust collection groove in the standing groove 19, it pastes to have the dust absorption subsides to paste in the dust collection groove, electrostatic precipitator stick 20, electric telescopic handle one 22 all are connected with a controller. The electrostatic precipitator stick 20 can be received in the standing groove 19, prevents to block and hold the board 34 and reciprocate, and the dust absorption subsides can adsorb the dust that falls down after the electrostatic precipitator stick 20 stops working simultaneously and collect, prevent that the dust from drifting away, and the dust absorption subsides is the bottom and pastes in the dust collection inslot through the mode of pasting, conveniently changes, and the electrostatic precipitator stick 20 is current mature technique, does not do the unique restriction here.

The lifting mechanism 4 comprises a plurality of spring bases 31 fixed on the workbench 1, each spring base 31 is internally provided with a telescopic spring 33, the top of each telescopic spring 33 is fixedly provided with a second electric telescopic rod 32, the upper end of the second electric telescopic rod 32 is a telescopic end, the telescopic ends of the second electric telescopic rods 32 are commonly connected with a bearing plate 34, four sides of the bearing plate 34 are shorter than four sides of the inner side of the positioning frame 17, the top of the bearing plate 34 is also provided with a plurality of contact sensors 35, and the second electric telescopic rod 32 and the contact sensors 35 are electrically connected with a controller. The bearing plate 34 passes through the middle part of the positioning frame 17 from the second electric telescopic rod 32 and approaches the adjustable attaching mechanism 5 to carry out attaching processing. The area of the top of the bearing plate 34 is smaller than the area of the hollow part of the positioning frame 17, so that the bearing plate 34 can pass through the positioning frame 17 to lift up and down. The telescopic spring 33 provides a buffer effect for the punch 30 when attaching the FPC board and the reinforcing plate coiled material 13, so that the FPC board is prevented from being crushed, and the number of the electric telescopic rods II 32 is four and are respectively fixed at four corners of the bottom of the bearing plate 34. The number and the positions of the contact sensors 35 can be adjusted according to the shapes of the FPC boards, the FPC boards in different shapes are detected respectively, when all the contact sensors 35 are in contact with the FPC boards, the contact sensors indicate that the positions of the FPC boards are accurately conveyed to the bearing plate 34, otherwise, the contact sensors indicate that the positions of the FPC boards deviate, and a controller reminds a worker to check the positions of the FPC boards.

The adjustable attaching mechanism 5 comprises a groove plate 23, the workbench 1 is provided with a supporting plate 2, the groove plate 23 is fixed on the upper portion of the supporting plate 2, a plurality of strip-shaped grooves 24 are formed in the groove plate 23, sliding rods 25 are slidably arranged in the strip-shaped grooves 24, and the lower ends of the sliding rods 25 extend out of the lower portions of the strip-shaped grooves 24 and are fixedly provided with adjusting boxes 26. The number of the strip grooves 24 is three, and other numbers of the strip grooves 24 may be provided by replacing the groove plate 23. The compression nut 29 is in threaded connection with the top of the hydraulic rod 28, and the compression nut 29 passes through the top of the hydraulic rod 28 to be in contact with the inner wall of the adjusting box 26 so as to fix the position of the hydraulic rod 28.

The side and the bottom of the adjusting box 26 are provided with communicating grooves 27 which are mutually communicated, a hydraulic rod 28 is inserted into the communicating grooves 27 on the bottom of the adjusting box 26, a compression nut 29 is arranged in the communicating grooves 27 on the side of the adjusting box 26 and is connected with the end part of the hydraulic rod 28, and a punch 30 is arranged at the bottom of the hydraulic rod 28. The strip-shaped groove 24 can be replaced according to the bonding requirement of the reinforcing plate according to one or more adjusting boxes 26, the grooving direction of the communicating groove 27 and the grooving direction of the strip-shaped groove 24 are vertically arranged in the horizontal direction, and the hydraulic rod 28 and the punch 30 can move at a plurality of angles of the plane position through the communicating groove 27 and the strip-shaped groove 24, so that the reinforcing bonding of a plurality of different reinforcing plates on the same FPC board is realized.

The winding drum set 6 comprises a winding drum 8, a coiled material drum 10 and a transition drum 9, wherein the coiled material drum 10 and the transition drum 9 are positioned on the same side of the adjustable attaching mechanism 5, the winding drum 8 is positioned on the other side of the adjustable attaching mechanism 5 opposite to the same, the reinforcing plate coiled material 13 is wound on the coiled material drum 10, and the reinforcing plate coiled material 13 is wound on the winding drum 8 by bypassing the transition drum 9.

The workbench 1 is fixedly provided with a fixing frame 12, the fixing frame 12 is provided with a plurality of bearing seats, bearing rods 11 are connected between the bearing seats and the supporting plate 2, the winding drums 8, the coiled material drums 10 and the transition drums 9 are respectively connected with the corresponding bearing rods 11, the supporting plate 2 is provided with a plurality of driving motors 7, the bearing rods 11 connected with the winding drums 8 are in one-to-one correspondence with the driving motors 7, and the driving motors 7 are electrically connected with the controller.

The workbench 1 on one side of the bearing plate 34 is provided with a feeding conveyer belt 14, the workbench 1 on the other side of the bearing plate 34 is provided with a discharging conveyer belt 15, the feeding end of the feeding conveyer belt 14 is higher than the positioning frame 17, and the feeding conveyer belt 14 and the discharging conveyer belt 15 are electrically connected with the controller. Through the setting of difference in height, realize the automatic feeding of FPC board and the transportation step of ejection of compact.

The FPC board reinforcing sheet attaching method of the FPC board reinforcing attaching device comprises the following steps:

1) The FPC board is conveyed into the top of the bearing plate 34 through the feeding conveyor belt 14, the position of the FPC board is limited and positioned by the bevel edge on the inner side of the positioning frame 17, and when all the contact sensors 35 detect contact with the FPC board, the FPC board accurately falls on the bearing plate 34;

2) The first electric telescopic rod 22 works, the static dust removing rod 20 is driven by the connecting rod 21 to move along the moving groove 18 to sweep the upper surface of the FPC board, the static dust removing rod 20 works to remove dust on the surface of the FPC board until the static dust removing rod enters the placing groove 19, and the static dust removing rod 20 stops working to enable dust adsorbed on the surface of the static dust removing rod 20 to fall into the dust collecting groove;

3) The second electric telescopic rod 32 works to drive the bearing plate 34 to ascend, so that the FPC board is ascended to be close to the reinforcing plate coiled material 13 and the punch 30, the hydraulic rod 28 works to press the punch 30 downwards, the punch 30 works to attach the reinforcing plate on the reinforcing plate coiled material 13 to the FPC board, the attaching is completed, and the hydraulic rod 28 resets and then the driving motor 7 works to drive the winding drum 8 to rotate to wind the attached reinforcing plate coiled material 13;

4) The second electric telescopic rod 32 close to one side of the discharging conveyor belt 15 is retracted and reset, so that the bearing plate 34 is inclined towards one side of the discharging conveyor belt 15, the attached FPC board falls on the discharging conveyor belt 15 to be discharged, and then all the second electric conveyor belts are reset into the positioning frame 17 to attach the FPC board repeatedly.

The invention realizes the functions of automatic positioning adjustment and position detection of the FPC board, integrates feeding, detection, positioning, dust removal, lamination and discharging, can automatically complete the reinforcing lamination work of the FPC board, can simultaneously perform reinforcing lamination at a plurality of different positions on the same FPC board, reduces manual participation, further accelerates the processing efficiency and improves the lamination accuracy of the reinforcing board.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A reinforcement plate fitting positioning dust removal mechanism, characterized in that the positioning dust removal mechanism (3) includes a fixed plate (16) fixed on a workbench (1), a positioning frame (17) with a hollow middle portion and a square structure is provided on the top of the fixed plate (16), the four side surfaces inside the positioning frame (17) are all inclined surfaces, and the front and rear opposite sides of the positioning frame (17) are provided with movable grooves (18), the left and right opposite sides of the positioning frame (17) are provided with placement grooves (19), and also includes an electrostatic dust removal rod (20), and both ends of the electrostatic dust removal rod (20) are provided with connecting rods (21) that are slidably plugged into the two movable grooves (18) of the positioning frame (17) respectively.

2. The reinforcement plate fitting positioning dust removal mechanism according to claim 1 is characterized in that an electric telescopic rod (22) is provided on the workbench (1), the telescopic end of the electric telescopic rod (22) is fixedly connected to the adjacent connecting rod (21), the telescopic direction of the electric telescopic rod (22) is the same as the moving direction of the connecting rod (21) in the moving groove (18), a dust collecting groove is provided on the bottom surface of the placement groove (19), a dust collecting sticker is pasted in the dust collecting groove, and the electrostatic dust removal rod (20) and the electric telescopic rod (22) are both connected to a controller.

3. The reinforcement plate laminating, positioning and dust removal mechanism according to claim 1 is characterized in that it also includes a lifting mechanism (4), the top of which is used to support the plate and can be lifted and lowered through the hollow part of the positioning and dust removal mechanism (3).

4. A reinforcement plate fitting positioning dust removal mechanism according to claim 3, characterized in that the lifting mechanism (4) includes a plurality of spring bases (31) fixed on the workbench (1), each of the spring bases (31) is provided with a telescopic spring (33), and the top of each telescopic spring (33) is fixed with an electric telescopic rod 2 (32), the upper end of the electric telescopic rod 2 (32) is a telescopic end, and the telescopic ends of the electric telescopic rod 2 (32) are commonly connected to a receiving plate (34), the four sides of the receiving plate (34) are shorter than the four inner sides of the positioning frame (17), and a plurality of contact sensors (35) are also provided on the top of the receiving plate (34), and the electric telescopic rod 2 (32) and the contact sensor (35) are both electrically connected to the controller.

5. A reinforcement plate bonding, positioning and dust removal mechanism according to claim 4, characterized in that an adjustable bonding mechanism (5) is further provided directly above the lifting mechanism (4), and multiple groups of roller groups (6) are provided on both sides of the adjustable bonding mechanism (5), and each of the roller groups (6) is wound with a reinforcement plate coil (13) and the pressure surface of the reinforcement plate coil (13) is in contact with the stamping end of the adjustable bonding mechanism (5), and the lifting mechanism (4) can move the plate close to the adjustable bonding mechanism (5) by lifting to perform reinforcement plate bonding processing.

6. A reinforcing plate fitting, positioning and dust removal mechanism according to claim 4, characterized in that the adjustable fitting mechanism (5) includes a groove plate (23), a support plate (2) is provided on the workbench (1), the groove plate (23) is fixed on the upper part of the support plate (2), and a plurality of strip grooves (24) are opened on the groove plate (23), and a slide rod (25) can be slidably installed in each of the strip grooves (24), and the lower end of each slide rod (25) extends out of the strip groove (24) and an adjustment box (26) is fixed below.

7. A reinforcement plate fitting positioning dust removal mechanism according to claim 6, characterized in that a side surface and a bottom surface of the adjustment box (26) are provided with interconnected communicating grooves (27), a hydraulic rod (28) is inserted into the communicating groove (27) on the bottom surface of the adjustment box (26), a clamping nut (29) is provided in the communicating groove (27) on the side surface of the adjustment box (26) and is connected to the end of the hydraulic rod (28), and a punch (30) is installed at the bottom of the hydraulic rod (28).

8. A reinforcement plate laminating, positioning and dust removal mechanism according to claim 7, characterized in that the reel group (6) includes a reel (8), a coil drum (10) and a transition drum (9), the coil drum (10) and the transition drum (9) are located on the same side of the adjustable laminating mechanism (5), and the reel (8) is located on the other side of the adjustable laminating mechanism (5) opposite thereto, the reinforcement plate coil (13) is wound on the coil drum (10), and the reinforcement plate coil (13) bypasses the transition drum (9) and is reeled on the reel drum (8).

9. A reinforcement plate fitting positioning dust removal mechanism according to claim 8, characterized in that a fixing frame (12) is fixed on the workbench (1), and a plurality of bearing seats are provided on the fixing frame (12), and a bearing rod (11) is connected between each bearing seat and the support plate (2), and each of the winding drum (8), coil drum (10) and transition drum (9) is respectively connected to the corresponding bearing rod (11), and a plurality of drive motors (7) are provided on the support plate (2), wherein the bearing rods (11) connected to the winding drum (8) are connected to the drive motor (7) one by one, and the drive motor (7) is electrically connected to the controller.

10. A reinforcing plate fitting positioning dust removal mechanism according to claim 9, characterized in that a feed conveyor belt (14) is provided on the workbench (1) on one side of the receiving plate (34), and a discharge conveyor belt (15) is provided on the workbench (1) on the other side of the receiving plate (34), the feed end of the feed conveyor belt (14) is higher than the positioning frame (17), and the feed conveyor belt (14) and the discharge conveyor belt (15) are both electrically connected to the controller.