Multifunctional PCB sheet conveyor

Abstract

The present invention relates to the field of electric vehicles, and relates to a multifunctional PCB sheet material conveying vehicle, comprising: a vehicle body; laser radars, which are distributed on both sides of the front of the vehicle body; visual probes, which are arranged on both sides of the front of the vehicle body; an identification module, which is arranged at the bottom of the vehicle body; a navigation tape, which is arranged below the identification module; a support plate, which is arranged on both sides of the top of the vehicle body; a transmission chain group, which is vertically arranged on both sides of the support plates on both sides; a fixed rod, which is evenly fixed on the transmission chain group at intervals; a support plate, which is arranged on the fixed rod and extends horizontally in a vertical arrangement of the transmission chain group; and a carrier plate, which is supported by the extension parts of the support plates arranged on both sides. The vehicle body of the present invention moves according to the arrangement line of the navigation tape and completes obstacle avoidance by the laser radar and the identification module. After arriving at the predetermined workstation, the transmission chain group lifts the carrier plate supported on the support plate to the top to complete the feeding, thereby realizing unmanned feeding and reducing labor costs.

Description

Technical Field

[0001] The invention relates to the field of electric vehicles, in particular to a multifunctional PCB sheet material conveying vehicle. Background Art

[0002] The materials required for PCB production are composed of various sheet materials and film materials. From the processing of raw materials to the final finished PCB board, multiple processing procedures are required. For more complex processing procedures, they are completed by a separate production line, so the upper and lower processing procedures require frequent handover of processed materials. The current material handover is to place the materials to be transferred on a cart, and people pull the cart to transport the materials to the designated location, and manually complete the handover registration at each processing link to avoid confusion in the processing link. This method of transferring materials by people with traditional carts is inefficient, and the labor cost required will increase accordingly when the production scale is large. At the same time, it is not easy to track the processing link where the materials arrive. Summary of the invention

[0003] The present invention aims to solve the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a multifunctional PCB board conveyor.

[0004] To achieve the above-mentioned purpose, the present invention provides a multifunctional PCB sheet conveyor, comprising: a tram body equipped with a microprocessor system; laser radars, distributed on both sides of the front of the tram body, for real-time scanning of stereoscopic imaging information of objects in front of the front of the tram and feeding it back to the microprocessor system; visual probes, arranged on both sides of the front of the tram body, for obtaining image information in front of the front of the tram and feeding it back to the microprocessor system; an identification module, arranged at the bottom of the tram body; a navigation tape, arranged below the identification module, which reads the information therein in real time and feeds it back to the microprocessor system, and corrects the tram body to move in the direction of arrangement of the navigation tape; support plates, arranged on both sides of the top of the tram body; a transmission chain group, vertically arranged on both sides of the support plates on both sides; a fixing rod, fixed on the transmission chain group at even intervals; a support plate, arranged on the fixing rod, which extends horizontally in a manner in which the transmission chain group is vertically arranged; a loading plate, supported by the extension parts of the support plates arranged on both sides; a first driving device, installed on the tram body, and drives the transmission chain groups on both sides to transmit synchronously.

[0005] As a further improvement of the scheme, it also includes: a locking protrusion, which is arranged on both sides of the support piece; a fixing ring, which is fixedly sleeved on both sides of the fixing rod and tightly attached to both sides of the support piece; a limiting opening is opened on one side of the fixing ring close to the support piece, and the limiting opening accommodates the locking protrusion and limits the rotation of the support piece within the range of zero to ninety degrees.

[0006] As a further improvement of the solution, the bottom of the loading plate is symmetrically arranged with bottom support parts extending downward, and a plurality of vertical reinforcing ribs are arranged between the bottom support parts on both sides; the maximum distance between the bottom support parts on both sides does not exceed the distance between the support plates on both sides.

[0007] As a further improvement of the solution, it also includes: a raising platform, which is arranged on the top of the tram body and located between the transmission chain groups on both sides.

[0008] As a further improvement of the scheme, it also includes: a second driving device, installed on both sides of the support plate on the rear side of the tram body; a transmission screw, arranged on both sides of the support plate and driven by the second driving device; a moving block, connected to the transmission screw; a top block, installed on the moving block, and movably pressed against the side of the loading plate.

[0009] As a further improvement of the scheme, it also includes: an electromagnet, which is installed on the moving block and leaves a gap between it and the top block; the top block is slidably installed on the moving block; a first spring is arranged between the top block and the moving block; the electromagnet and the top block are both provided with magnetic suction parts that cooperate with each other and contact and protrude.

[0010] As a further improvement of the scheme, it also includes: a transmission roller group, installed on the support plate on one side; the loading plate pushed out by the upper part of the transmission chain group falls on the transmission roller group; a driving motor is installed on the support plate below the transmission roller group, driving the transmission roller group to rotate through a pulley group.

[0011] As a further improvement of the scheme, it also includes: a positioning frame, which has inclined extending guide edges on both sides, and is movably clamped at the rear end of the tram body through the guide edges; the positioning frame is provided with power supply terminals, and the rear end of the tram body is provided with power connection terminals matching the power supply terminals.

[0012] As a further improvement of the scheme, it also includes: a telescopic cylinder, installed on the positioning frame; a push plate, fixed on the movable rod of the telescopic cylinder; a hook plate, vertically slidably arranged on the push plate; a stop block, installed on the bottom of the rear end of the tram body; a limiting rod, mounted on the bottom of the positioning frame; the hook plate passes between the limiting rod and the positioning frame, and the lower part of the end of the hook plate is provided with a thickened portion protruding downward; after the telescopic cylinder is extended, the push plate moves horizontally with the hook plate, and the thickened portion moves upward against the limiting rod and causes the protruding hook on the hook plate to hook the stop block.

[0013] As a further improvement of the solution, it also includes: a second spring arranged between the hook plate and the push plate.

[0014] The present invention brings at least the following effects:

[0015] 1. The trolley body of the present invention moves according to the layout of the navigation tape. During the movement, the laser radar and the identification module are used to avoid obstacles. After the trolley body moves to the predetermined workstation, the transmission chain group lifts the loading plate placed on the support to the top to complete the feeding, thereby realizing unmanned feeding and reducing labor costs. At the same time, the trolley body can record its own movement trajectory, and can effectively track the processing link of the raw materials, so that the processing materials can be carried out in an orderly manner.

[0016] 2. The clamping protrusion and the fixing ring provided for the support plate of the present invention can limit the deflection of the support plate within a fixed range. Therefore, when the transmission chain group collects the loading plates with inconsistent loading amounts, the support plate can adaptively deflect during the transmission of the transmission chain group to avoid being stuck in the plate material.

[0017] 3. The transmission screw provided in the present invention cooperates with the top block that moves with the moving block to push the loading plate lifted to the top, thereby facilitating the cooperation with the material collecting and unloading device on the production line to complete the material collecting and unloading steps.

[0018] 4. The telescopic cylinder, the push plate and the hook plate provided in the present invention can maintain the stability of the charging connection when the electric vehicle body is parked on the production line for charging, and further ensure that the electric vehicle body will not move and shake easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a complete schematic diagram of the present invention.

[0020] Figure 2 For the present invention Figure 1 Schematic diagram from another perspective.

[0021] Figure 3 It is a partial schematic diagram of the present invention.

[0022] Figure 4 It is a schematic diagram of the specific positions of the fixing rod and the supporting piece of the present invention.

[0023] Figure 5 It is a schematic diagram of the specific structure of the clamping protrusion, the fixing ring and the limiting opening of the present invention.

[0024] Figure 6 It is a schematic diagram of the changing state of the supporting piece of the present invention.

[0025] Figure 7 Schematic diagram of the specific structure of the carrier plate of the present invention.

[0026] Figure 8 The figure is a schematic diagram of the specific positions of the moving block, the top block, the electromagnet and the transmission roller group of the present invention.

[0027] Fig. 9It is a schematic diagram of the specific relationship between the top block and the electromagnet of the present invention.

[0028] Fig.10 It is a schematic diagram of the specific relationship between the transmission roller group and the driving motor of the present invention.

[0029] Fig.11 It is a schematic diagram of the specific positions of the telescopic cylinder, the push plate and the hook plate of the present invention.

[0030] Fig.12 It is a schematic diagram of the relationship between the stop block and the hook plate of the present invention.

[0031] Fig.13 For the present invention Fig.12 Schematic diagram after the positioning frame is hidden.

[0032] The corresponding relationship between the reference numerals and the names of the components in the accompanying drawings is as follows:

[0033] 1-trolley body, 2-laser radar, 3-visual probe, 4-identification module, 5-navigation tape, 6-support plate, 7-transmission chain group, 71-fixing rod, 72-support plate, 8-carrying plate, 9-first driving device;

[0034] 721-card convex, 722-fixing ring, 723-limiting opening;

[0035] 81- bottom support, 82- reinforcing rib, 83- bevel;

[0036] 10- Heightening platform;

[0037] 11-second driving device, 12-transmission screw, 13-moving block, 14-top block;

[0038] 15-electromagnet, 151-magnetic attraction part, 152-first spring;

[0039] 16-transmission roller group, 17-driving motor;

[0040] 18-positioning frame, 181-guiding edge, 182-power supply terminal, 183-power connection terminal;

[0041] 19- telescopic cylinder, 20- pushing plate, 21- hook plate, 211- protruding hook portion, 212- thickened portion, 22- stop block, 23- limiting rod;

[0042] 24-second spring, 300-sheet material. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be appreciated that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present application.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] The present invention specifically discloses a multifunctional PCB sheet material conveying vehicle, such as Figure 1-Figure 7 As shown, it includes: a tram body 1 equipped with a microprocessor system, the microprocessor system includes a scheduling module, a production management module and a data storage module for calling the hardware facilities of the tram body 1, according to Figure 1As shown, the right side of the tram body 1 is the front part, and the left side is the rear part. Laser radars 2 are distributed on both sides of the front of the tram body 1. The laser radars 2 work during the movement of the tram body 1, and establish stereoscopic imaging information by real-time scanning of objects in front of the front of the tram, and feed back the obtained stereoscopic imaging information to the microprocessing system. When an object hinders the movement of the tram body 1, it stops moving to avoid collision. Visual probes 3 are configured on both sides of the front of the tram body 1. The visual probes 3 take pictures of objects that hinder the front of the tram body 1 and transmit the image information to the background of the microprocessing system. An identification module 4 is fixedly installed at the bottom of the tram body 1. Among them, according to the distribution of the production lines, the feeding points and receiving points on each production line are connected in series through the navigation tape 5 arranged on the ground. The feeding points and receiving points on the production line are generally located at the starting position and the end position of the production line. Therefore, the node information of the feeding points and the receiving points is recorded on the navigation tape 5. Each node information is the designated workstation that the tram body 1 needs to reach, and a certain number of tram bodies 1 are configured according to the number of designated workstations. The navigation tape 5 also contains fixed map guidance information, and by making the identification module 4 located above the navigation tape 5, the information in the navigation tape 5 can be read in real time by the identification module 4 during the movement of the tram body 1, and the acquired information is fed back to the microprocessor system in real time. When the moving path is offset, the moving direction of the tram body 1 is corrected in time, so that the tram body 1 moves according to the fixed route of the navigation tape 5. Whenever the tram body 1 moves to the designated workstation, the node information is recorded by the microprocessor system. The node information includes the batch information, quantity, specification and model of the conveyed product. At this point, the tram body 1 can move independently along a predetermined route and complete obstacle avoidance operations during the movement without human assistance. The execution efficiency is high, and the transported materials are easy to track in the production link, and the location of the materials can be quickly understood.

[0046] The specific loading method of the sheet material 300 on the electric vehicle body 1 is as follows: Figure 2-Figure 4As shown, support plates 6 are symmetrically fixedly installed on both sides of the top of the tram body 1, and transmission chain groups 7 are vertically installed on the support plates 6 arranged on both sides. A plurality of fixing rods 71 ​​are evenly fixed on the transmission chain group 7, and the fixing rods 71 ​​realize circular transmission through the transmission chain group 7. A plurality of supporting plates 72 are evenly spaced on the fixing rods 71. When the transmission chain group 7 is vertically arranged, the supporting plates 72 extend horizontally in a manner perpendicular to the transmission chain group 7. After the plates 300 are stacked on the carrier 8, the carrier 8 together with the plates 300 can be placed on the supporting plates 72 arranged on both sides, and the carrier 8 is supported by the extended parts of the supporting plates 72. The carrier 8 is placed in sequence from the top to the bottom. A plurality of carriers 8 are placed at intervals according to the plurality of fixing rods 71 ​​arranged at intervals. Therefore, a variety of different plates 300 can be stored separately on the tram body 1. When taking out, the supporting plates 72 are transmitted upward along with the transmission chain group 7, so as to lift the carrier 8 upward, and then take the carrier 8 away from the top layer.

[0047] The fixed rod 71 is driven up or down by the transmission chain group 7 to move the sheet 300 up and down. The driving force of the transmission chain group 7 is provided by the first driving device 9 installed on the tram body 1. The first driving device 9 is composed of a reduction motor and a gear transmission member, so as to drive the transmission chain groups 7 on both sides to maintain synchronous transmission, so that the fixed rods 71 ​​on both sides can move at the same height, so that the loading plate 8 placed on the support plate 72 will not be skewed.

[0048] Among them, Figure 5 As shown, protruding locking protrusions 721 are fixedly provided on both sides of the support piece 72, and fixing rings 722 are fixedly installed on the fixing rods 71 ​​near the two sides of the support piece 72. The fixing rings 722 are tightly attached to the two sides of the support piece 72, and an arc-shaped limiting opening 723 is opened on the side of the fixing ring 722 near the support piece 72. The limiting opening 723 allows the locking protrusion 721 to slide therein, and the support piece 72 is connected to the fixing rod 71 in a rotational connection. The sliding restriction of the locking protrusion 721 by the limiting opening 723 can limit the rotation of the support piece 72 within the range of zero to ninety degrees.

[0049] like Figure 6 As shown, when the heights of the sheets 300 stacked on the carrier 8 are inconsistent, the stacking heights of the carrier 8 will also be different. Therefore, when the transmission chain group 7 continuously stacks the carrier 8 downward, the support piece 72 that would hinder the carrier 8 will be adaptively deflected upward because the support piece 72 can rotate, so as to prevent it from being stuck on the sheet 300. Accordingly, when the transmission chain group 7 lifts the carrier 8 upward, the support piece 72 abuts against the bottom of the carrier 8 or is directly stuck in the sheet 300, and lifts the carrier 8 and the sheet 300 upward with the transmission of the transmission chain group 7.

[0050] Among them, Figure 7As shown, a downwardly extending bottom support portion 81 is symmetrically arranged at the bottom of the carrier plate 8, and the extended bottom support portion 81 can leave a gap between the stacked sheet 300 and the carrier plate 8, so that it is easy for the support sheet 72 to rest against the bottom of the carrier plate 8, and the maximum distance between the bottom support portions 81 on both sides does not exceed the distance between the support sheets 72 on both sides, so that the bottom support portions 81 on both sides are located between the support sheets 72 on both sides, and it is ensured that the carrier plate 8 will not be laterally offset. At the same time, in order to enhance the structural strength of the carrier plate 8, a plurality of vertical reinforcing ribs 82 are arranged between the bottom support portions 81 on both sides to enhance the load-bearing capacity of the carrier plate 8, and the side edges of the bottom support portion 81 and the bottom edge of the carrier plate 8 are set as bevel edges 83, and the bevel edges 83 can prevent the carrier plate 8 from hitting the front support sheet 72 during the process of being pushed out from the support sheet 72.

[0051] like Figure 3 As shown, a raising platform 10 is fixedly installed on the top of the tram body 1, and the raising platform 10 is located between the transmission chain groups 7 on both sides. After the transmission chain group 7 drives the supporting piece 72 on the fixing rod 71 to rotate to the bottommost area, there will be an incontactable area between the supporting piece 72 and the bottommost loading board 8. After the loading board 8 is placed on the raising platform 10, the transmission chain group 7 can make the supporting piece 72 contact with the loading board 8 placed at the bottom during the upward driving process, thereby lifting the loading board 8 at the bottom.

[0052] In one specific embodiment, Figure 8 and Fig. 9 As shown, it also includes: a second driving device 11 installed on both sides of the support plate 6 on the rear side of the tram body 1, the second driving device 11 is composed of an external motor and a built-in transmission member, and a transmission screw 12 is installed on the upper part of both sides of the support plates 6 on both sides, and the transmission screw 12 is driven to rotate by the second driving device 11, and a moving block 13 is connected to the transmission screw 12. As the transmission screw 12 rotates, the moving block 13 makes a lateral translation movement, and a top block 14 is installed on the moving block 13. The top block 14 can be against the side of the carrier plate 8 during the movement process and push the carrier plate 8 to move. Therefore, after the tram body 1 moves to the designated workstation and lifts the carrier plate 8 to the top, the second driving device 11 drives the transmission screw 12 to rotate, thereby being able to push out the carrier plate 8 located on the support plate 72.

[0053] Among them, an electromagnet 15 is fixedly installed on the moving block 13, and a gap is left between the electromagnet 15 and the top block 14. The top block 14 is installed on the moving block 13 in a sliding connection manner. A first spring 152 is provided between the top block 14 and the moving block 13. The top block 14 is kept in a pop-up state by the first spring 152. In the process of the top block 14 following the movement of the moving block 13, it can be against the carrier plate 8, so as to push the carrier plate 8 to move to the production line. When the material on the production line needs to be moved to the support sheet 72, the electromagnet 15 can be started at this time, and the magnetic attraction part 151 on the electromagnet 15 and the magnetic attraction part 151 set on the top block 14 are attracted to each other and compress the first spring 152. At this time, the top block 14 does not contact the carrier plate 8, and the moving block 13 moves with the top block 14 to the rear side of the carrier plate 8. At this time, the electromagnet 15 is released again, and the top block 14 can be against the rear side of the carrier plate 8 again. At this time, the carrier plate 8 on the production line can be pushed onto the support sheet 72.

[0054] In one specific embodiment, Figure 8 and Fig.10 As shown, it also includes: a transmission roller group 16 installed on the support plate 6 on the rear side of the tram body 1. At this time, the carrier plate 8 pushed out from the support plate 72 or the carrier plate 8 pushed onto the support plate 72 from the production line needs to pass through the transmission roller group 16. A driving motor 17 is fixedly installed on the support plate 6 below the transmission roller group 16. The driving motor 17 drives the transmission roller group 16 to rotate through the pulley group. Therefore, the transmission roller group 16 can assist in pushing the carrier plate 8.

[0055] In one specific embodiment, Figure 1 , Fig.11 , Fig.12 and Fig.13As shown, it also includes: a positioning frame 18 fixedly installed at both the head and tail positions of the production line when in use, and inclined guide edges 181 are provided on both sides of the positioning frame 18. The positioning frame 18 is movably clamped at the rear of the electric vehicle body 1 through the guide edges 181. When in use, the electric vehicle body 1 needs to be clamped on the positioning frame 18 with the help of the guide edges 181 after it stops at the designated position. The positioning frame 18 is provided with a power supply terminal 182, and the rear of the electric vehicle body 1 is provided with a power connection terminal 183 matching the power supply terminal 182. Therefore, after the electric vehicle body 1 is clamped into the positioning frame 18, it can be connected to the electric vehicle body 1 through the power supply terminal 182 and the power connection terminal 183. The connection of 83 is used to charge the tram body 1, and the positioning frame 18 can be used to limit the movement of the tram body 1 to avoid the body deviation during the transfer of the sheet material 300; the telescopic cylinder 19 is fixedly installed on the positioning frame 18, and the pushing plate 20 is fixed on the movable rod of the telescopic cylinder 19. The pushing plate 20 is connected to the hook plate 21 in a vertical sliding manner. The bottom of the rear of the tram body 1 is fixedly installed with a stop block 22, and a limiting rod 23 is arranged at the bottom of the positioning frame 18. The hook plate 21 passes between the limiting rod 23 and the positioning frame 18, and the lower part of the end of the hook plate 21 is provided with a thickened portion 212 protruding downward.

[0056] When in use, after the tram body 1 is inserted into the positioning frame 18, the telescopic cylinder 19 extends to move the push plate 20 and move the hook plate 21 with it. During the movement, the thickened portion 212 abuts against the limiting rod 23, which will cause the hook plate 21 to move upward and the protruding hook portion 211 on the hook plate 21 to hook the stop block 22. During the continuous pushing of the telescopic cylinder 19, the tram body 1 will be firmly fixed on the positioning frame 18, thereby preventing the vehicle from moving forward and causing the power supply terminal 182 and the power terminal 183 to be out of contact, and further ensuring that the vehicle is stable and will not shake. A second spring 24 is provided between the hook plate 21 and the push plate 20. The function of the second spring 24 is to ensure that the hook plate 21 that has moved upward can slide downward and no longer hook the stop block 22 after the telescopic cylinder 19 is retracted.

[0057] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. Multifunctional PCB sheet conveyor, including: A tram body (1) equipped with a microprocessor system; characterized in that it also includes: laser radars (2) distributed on both sides of the front of the tram body (1) for real-time scanning of stereoscopic imaging information of objects in front of the front of the tram and feeding it back to the microprocessor system; visual probes (3) arranged on both sides of the front of the tram body (1) for acquiring image information in front of the front of the tram and feeding it back to the microprocessor system; an identification module (4) arranged at the bottom of the tram body (1); a navigation tape (5) arranged below the identification module (4), the identification module (4) reading the information in the tape in real time and feeding it back to the microprocessor system, and correcting the tram body. The electric vehicle body (1) moves in the direction in which the navigation tape (5) is arranged; the support plates (6) are arranged on both sides of the top of the electric vehicle body (1); the transmission chain groups (7) are vertically arranged on both sides of the support plates (6); the fixing rods (71) are evenly fixed on the transmission chain groups (7); the supporting plates (72) are arranged on the fixing rods (71) and extend laterally in the manner that the transmission chain groups (7) are arranged vertically; the loading plate (8) is supported by the extended parts of the supporting plates (72) arranged on both sides; the first driving device (9) is installed on the electric vehicle body (1) and drives the transmission chain groups (7) on both sides to transmit synchronously; It also includes: a clamping protrusion (721) disposed on both sides of the support plate (72); a fixing ring (722) fixedly sleeved on both sides of the fixing rod (71) and closely attached to both sides of the support plate (72); a limiting opening (723) is formed on one side of the fixing ring (722) close to the support plate (72), the limiting opening (723) accommodates the clamping protrusion (721) and limits the rotation of the support plate (72) within a range of zero to ninety degrees; It also comprises: a positioning frame (18) having inclined extending guide edges (181) on both sides thereof, and being movably clamped at the rear of the electric vehicle body (1) through the guide edges (181); a power supply terminal (182) being provided on the positioning frame (18), and a power connection terminal (183) matching the power supply terminal (182) being provided at the rear of the electric vehicle body (1); The utility model also comprises: a telescopic cylinder (19) mounted on the positioning frame (18); a push plate (20) fixed on the movable rod of the telescopic cylinder (19); a hook plate (21) vertically slidably arranged on the push plate (20); a stop block (22) mounted on the bottom of the rear end of the electric vehicle body (1); a limiting rod (23) mounted on the bottom of the positioning frame (18); the hook plate (21) passes between the limiting rod (23) and the positioning frame (18), and a thickened portion (212) protruding downward is provided at the lower end of the hook plate (21); after the telescopic cylinder (19) is extended, the push plate (20) moves horizontally with the hook plate (21), and the thickened portion (212) moves upward against the limiting rod (23) and causes the protruding hook portion (211) on the hook plate (21) to hook the stop block (22); It also includes: a second spring (24) arranged between the hook plate (21) and the push plate (20).

2. The multifunctional PCB sheet conveyor according to claim 1, characterized in that: A bottom support portion (81) extending downward is symmetrically arranged at the bottom of the loading plate (8), and a plurality of vertical reinforcing ribs (82) are arranged between the bottom support portions (81) on both sides; the maximum distance between the bottom support portions (81) on both sides does not exceed the distance between the support plates (72) on both sides.

3. The multifunctional PCB sheet conveyor according to claim 2 is characterized in that: Also includes: The heightening platform (10) is arranged on the top of the electric vehicle body (1) and is located between the transmission chain groups (7) on both sides.

4. The multifunctional PCB sheet conveyor according to claim 3 is characterized in that: Also includes: A second driving device (11) is installed on both sides of the support plate (6) on one side; a transmission screw (12) is arranged on both sides of the support plates (6) on both sides and is driven by the second driving device (11); a moving block (13) is connected to the transmission screw (12); and a top block (14) is installed on the moving block (13) and movably abuts against the side of the carrier plate (8).

5. The multifunctional PCB sheet conveyor according to claim 4 is characterized in that: Also includes: The electromagnet (15) is mounted on the moving block (13) and has a gap with the top block (14); the top block (14) is slidably mounted on the moving block (13); a first spring (152) is arranged between the top block (14) and the moving block (13); and the electromagnet (15) and the top block (14) are both provided with magnetic attraction parts (151) that cooperate with each other and contact and protrude.

6. The multifunctional PCB sheet conveyor according to claim 5, characterized in that: Also includes: A transmission roller group (16) is mounted on the support plate (6) at the rear side of the electric vehicle body (1); the loading plate (8) pushed out by the upper portion of the transmission chain group (7) falls on the transmission roller group (16); a driving motor (17) is mounted on the support plate (6) below the transmission roller group (16) and drives the transmission roller group (16) to rotate via a pulley group.

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