A belt transfer device for feeding and discharging products of different thicknesses

Abstract

The application discloses a belt transfer device for feeding and discharging products with different thicknesses, and relates to the field of transfer devices.The belt transfer device comprises a first transfer mechanism, the first transfer mechanism comprises two symmetrical frame bodies and a transmission belt, the top surface of the transmission belt is fixed with a supporting part, and a controller is installed on the frame body.The belt transfer device for feeding and discharging products with different thicknesses can drive the rotating rod to rotate by starting the second motor, the rotating rod drives the connecting rods to rotate, the two connecting rods drive the push plates to rotate, and then the push plates perform counterclockwise reciprocating motion, the circuit board on the top surface of the rubber column is moved to the air cushion by the two push plates performing reciprocating motion, the circuit board on the top surface of the air cushion is moved to the top surface of the shell on the other transmission belt again by the two push plates performing reciprocating motion, and the discharging work is completed, and the circuit board can be continuously tested by cooperation of the above components.

Description

Technical Field

[0001] This invention relates to the field of transfer device technology, specifically a belt transfer device for loading and unloading products of varying thicknesses for testing. Background Technology

[0002] Uneven thickness circuit boards refer to circuit boards with non-uniform thickness. This variation in thickness may be due to inconsistencies in the manufacturing process, differences in material properties, or design requirements. Uneven thickness circuit board testing involves inspecting the uneven thickness portions of the circuit board and ensuring they meet specific quality and performance standards. This testing is particularly important in production and quality control because uneven thickness can affect the mechanical and electronic properties of the circuit board, thus impacting the overall reliability and performance of the product. The main role of belt conveyors in circuit board testing is to automate loading and unloading, reducing manual operation and helping to improve the efficiency and accuracy of the testing process, especially in high-volume production and testing.

[0003] In the electronics manufacturing process, circuit board testing is generally divided into two categories: dynamic testing and static testing. Dynamic testing refers to testing performed while the circuit board is moving. This testing method is typically used to check basic functions and quality control because it can be completed quickly while the circuit board is being moved by a conveyor belt. Static testing is a more precise and detailed test performed when the circuit board is stationary.

[0004] In existing technologies, dynamic testing is performed using devices such as photoelectric sensors and machine vision systems. These devices inspect and detect the circuit board as it moves, and the conveyor belt typically does not stop. For static testing, however, precise and detailed testing is required when the circuit board is stationary. In this case, the conveyor belt needs to stop at specific locations so that the testing equipment can perform the necessary measurements. There is also an intermittent stop-and-go testing method, where the conveyor belt stops briefly at the testing point and then continues to run.

[0005] Regarding the above solutions, for dynamic testing where the circuit board doesn't need to be stationary, the conveyor belt must be stopped before static testing can begin. Conversely, for static testing where the circuit board needs to be stationary, workers must place the board back onto the conveyor belt for dynamic testing. Regardless of the method used, the efficiency of circuit board testing is reduced during complete testing. Furthermore, after testing, defective circuit boards need to be marked and isolated to prevent them from entering the next production stage or being shipped. Workers may make errors during marking and isolation, such as unclear marking or omissions, leading to defective products not being correctly identified and handled. Therefore, we provide a belt conveyor device for loading and unloading products of varying thicknesses to solve these problems. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a belt conveyor for loading and unloading products of varying thicknesses for testing. This device can continuously perform static and dynamic tests on circuit boards, while avoiding situations where workers make unclear or missed markings during the marking and isolation process, resulting in defective products not being correctly identified.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a belt conveyor for loading and unloading products of varying thicknesses, comprising a first conveyor mechanism, the first conveyor mechanism comprising two symmetrical frames and a transmission belt, a support component fixed to the top surface of the transmission belt, a controller mounted on the frame, a diversion mechanism for diverting products on the transmission belt, a second conveyor mechanism cooperating with the diversion mechanism on the frame, and an adjustment mechanism for adjusting the position of the circuit board between the two sets of frames;

[0008] The diversion mechanism includes a connecting plate fixed between the left side frames. Electric push rods are fixed on both sides of the connecting plate. Top plates are fixed to the ends of the two electric push rods that are far apart from each other. The bottom surface of the drive pulley below the connecting plate is in contact with the spring telescopic rod. The top surface of the top plate above the connecting plate is not in contact with the transmission belt. Spring telescopic rods are fixed between the two top plates and the connecting plate. The spring telescopic rod includes a fixed cylinder fixed to the side of the connecting plate. A fixed rod that is slidably connected to the inner wall of the fixed cylinder is fixed to the side of the top plate near the connecting plate. A spring is provided inside the fixed cylinder.

[0009] The second transfer mechanism includes a second motor fixed on the frame, an active roller fixed at the output end of the second motor, a driven roller rotatably connected to the frame, and belts installed on the active roller and the driven roller;

[0010] The adjustment mechanism includes a mounting frame fixed to the frame body. Two mounting seats are fixed to the top surface of the mounting frame. Rotating rods are rotatably connected to the sides of the two mounting seats. Connecting rods are rotatably connected to one end of each of the two rotating rods. A push plate is fixed to the other end of the two connecting rods. A servo motor is fixed to the right mounting seat. The output end of the servo motor is fixed to the right rotating rod. A fixing frame is fixed to the side of the mounting frame. A placement platform is fixed to the top surface of the fixing frame. A photoelectric sensor is mounted on the push plate.

[0011] Furthermore, an air cushion is fixed to the top surface of the placement platform, and a sponge strip is fixed to the top surface of the push plate, the outer contour of which is rectangular.

[0012] By adopting the above technical solution, the air cushion can effectively prevent the circuit board from shaking when it is moved to the top of the placement platform by the push plate, thereby achieving complete stillness of the circuit board so that the circuit board can be stationary for static testing. When the circuit board comes into contact with the sponge strip, the sponge strip will deform, making the sponge strip fit the circuit board better. The sponge strip can increase the contact area between the push plate and the circuit board and improve the stability of moving the circuit board.

[0013] Furthermore, a stabilizing rod is rotatably connected between the two connecting rods, and the stabilizing rod is located at one end near the mounting base.

[0014] By adopting the above technical solution, the two connecting rods can be supported, improving the stability of the connection between the connecting rods, push plate, and mounting base, making the movement of the connecting rods and push plate more stable.

[0015] Furthermore, the supporting component is a rubber column, and the outer contour of the rubber column is cylindrical.

[0016] By adopting the above technical solution, the rubber pillars can support the circuit board to be tested, providing a certain height for the circuit board, which facilitates the transfer of the circuit board by the pusher and transports the circuit board to the top of the air cushion.

[0017] Furthermore, a pad is fixed to the top surface of the rubber column, and the height of the rubber column and the pad is less than the height of the bottom surface of the belt.

[0018] By adopting the above technical solution, the pad usually has a certain friction force, which can effectively prevent the circuit board from sliding during operation or movement, provide stable support, and the pad provides a soft contact surface, which can avoid hard objects from directly contacting the circuit board surface, thereby reducing the risk of scratches or pressure damage and protecting the circuit board and the components on its surface.

[0019] Furthermore, two symmetrical pressure bars are rotatably connected to the frame, and the two pressure bars are located below the driven roller.

[0020] By adopting the above technical solution, when the electric push rod is started, it will drive the top plate to rise and fall. The top plate will lift the upper part of the transmission belt, and the pressure rod can limit the upper part of the transmission belt, reducing the distance between the lifted transmission belt and the belt on its left side, so that defective circuit boards can be transferred more stably to the top surface of the belt.

[0021] Furthermore, a first motor is installed at one end of the frame, and a drive pulley is fixed at the output end of the first motor. A mounting plate is rotatably connected to the other end of the frame.

[0022] Furthermore, a driven pulley is rotatably connected to the mounting plate, and the transmission belt is sleeved on the driving pulley and the driven pulley.

[0023] By adopting the above technical solution, the starting of the first motor can drive the drive pulley to rotate. A transmission belt is sleeved on the drive pulley. Therefore, the drive pulley will drive the transmission belt to rotate on the driven pulley. The continuously moving transmission belt will drive the support mechanism set on its surface to move.

[0024] Furthermore, the mounting plate is fixed to one end of the frame by bolts, and a fixing plate is fixed to the crossbar of the frame by bolts. The fixing plate is rotatably connected to the upright of the frame.

[0025] By adopting the above technical solution, it is easy to replace the transmission belt.

[0026] Furthermore, each of the two top plates, on opposite sides, is rotatably connected to a uniformly distributed sliding rod.

[0027] By adopting the above technical solution, the friction between the top plate and the transmission belt is effectively reduced. When the transmission belt rotates on the driving pulley and the driven pulley, it will drive the transmission belt to rotate. Under the drive of the transmission belt, the sliding rod will rotate together. The sliding rod effectively reduces the friction between the top plate and the transmission belt, ensuring the stability of the transmission belt.

[0028] Compared with existing technologies, this belt conveyor for loading and unloading products of varying thicknesses has the following advantages:

[0029] I. The invention enables the second motor to rotate the rotating rod, which in turn drives the connecting rod to rotate. The two connecting rods together drive the push plate to rotate, causing the push plate to reciprocate counterclockwise. The two reciprocating push plates move the circuit board on the top surface of the rubber column onto the air cushion. At this time, the circuit board is stationary, allowing for high-precision or contact testing. After testing the circuit board, the two reciprocating push plates move the circuit board on the top surface of the air cushion onto the top surface of the housing on the other side of the transmission belt, completing the unloading process. Through the cooperation of the above components, static and dynamic tests can be continuously performed on the circuit board.

[0030] Second, this invention uses a connecting plate, an electric push rod, and a top plate to lift the lower part of the transmission belt. When the detection equipment detects a defective product, it activates the electric push rod below the connecting plate, causing the top plate to move upward. At the same time, it activates the electric push rod fixed above the connecting plate, causing the top plate to rise. The top plate and sliding rod then hold the upper part of the transmission belt in place, thereby conveying the defective products on the transmission belt onto the conveyor belt, completing the classification of defective products. This avoids situations where workers make unclear or missed markings during the marking and isolation process, resulting in defective products not being correctly identified.

[0031] Third, the present invention can drive the active pulley to rotate by starting the first motor. The active pulley will drive the transmission belt sleeved on the active pulley to rotate on the driven pulley, and then drive the circuit board placed on it to be transferred by continuous movement.

[0032] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0035] Figure 3 For the present invention Figure 1 Enlarged schematic diagram of the structure at point B;

[0036] Figure 4 This is a cross-sectional view of the internal structure of the diversion mechanism of the present invention;

[0037] Figure 5 This is an enlarged schematic diagram of the fixing plate and frame structure of the present invention;

[0038] Figure 6 This is a cross-sectional view of the internal structure of the fixing cylinder and fixing rod of the present invention;

[0039] Figure 7 For the present invention Figure 1 Enlarged schematic diagram of the structure at point C;

[0040] Figure 8 For the present invention Figure 7 Sectional view of the middle frame;

[0041] Figure 9 This is an enlarged schematic diagram of the adjustment mechanism structure of the present invention;

[0042] Figure 10 This is an enlarged schematic diagram of the servo motor and rotating rod of the present invention.

[0043] In the picture:

[0044] 1. First transfer mechanism; 101. Frame; 102. First motor; 103. Drive pulley; 104. Transmission belt; 105. Mounting plate; 106. Driven pulley; 107. Fixing plate;

[0045] 2. Diverting mechanism; 201. Connecting plate; 202. Electric push rod; 203. Top plate; 2031. Sliding rod; 204. Spring telescopic rod; 2041. Fixed cylinder; 2042. Fixed rod; 2043. Spring;

[0046] 3. Adjustment mechanism; 301. Mounting bracket; 302. Mounting base; 303. Servo motor; 304. Rotating rod; 305. Connecting rod; 306. Push plate; 307. Fixing bracket; 308. Placement platform; 309. Air cushion; 310. Sponge strip; 311. Stabilizing rod; 312. Photoelectric sensor;

[0047] 4. Rubber column; 5. Controller;

[0048] 6. Second transfer mechanism; 601. Second motor; 602. Drive roller; 603. Driven roller; 604. Belt; 605. Pressure bar;

[0049] 7. Testing equipment. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0051] It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] Please see Figure 1-8 This invention provides a technical solution: a belt conveyor for loading and unloading products of varying thicknesses for testing, comprising a first conveyor mechanism 1, which includes two symmetrical frames 101 and a transmission belt 104. Supporting components are rubber pillars 4, each with a cylindrical outer contour. The rubber pillars 4 provide support for the circuit board to be tested, offering sufficient height to facilitate the transfer of the circuit board by the push plate 306. Furthermore, the distance between each rubber pillar 4 is greater than the width of the push plate 306, ensuring that the rubber pillars 4 do not interfere with the push plate 306 during reciprocating motion. The movement of 6 creates an obstacle, allowing the push plate 306 to move normally and transport the circuit board to the top surface of the air cushion 309. A pad is fixed to the top surface of the rubber pillar 4. The height of the rubber pillar 4 and the pad is less than the height of the bottom surface of the belt 604. The pad usually has a certain friction force, which can effectively prevent the circuit board from sliding during operation or movement and provide stable support. The pad provides a soft contact surface, which can avoid hard objects from directly contacting the surface of the circuit board, thereby reducing the risk of scratches or pressure damage and protecting the circuit board and the components on its surface. The testing device 7 is set on one side of the invention to test the circuit board.

[0053] A controller 5 is installed on the frame 101. A first motor 102 is installed at one end of the frame 101. A drive pulley 103 is fixed to the output end of the first motor 102. A mounting plate 105 is rotatably connected to the other end of the frame 101. A driven pulley 106 is rotatably connected to the mounting plate 105. A transmission belt 104 is sleeved on the drive pulley 103 and the driven pulley 106. The mounting plate 105 is fixed to one end of the frame 101 by bolts. A fixing plate 107 is fixed to the crossbar of the frame 101 by bolts. The fixing plate 107 is rotatably connected to the upright of the frame 101. The start of the first motor 102 can drive the drive pulley 103 to rotate. Since the transmission belt 104 is sleeved on the drive pulley 103, the drive pulley 103 will drive the transmission belt 104 to rotate on the driven pulley 106. The continuously moving transmission belt 104 will drive the circuit board to move through the rubber column 4.

[0054] Please refer to this carefully. Figure 1 , Figure 4 , Figure 5 and Figure 6The transmission belt 104 is equipped with a diversion mechanism 2 for diverting products. The diversion mechanism 2 includes a connecting plate 201 fixed between the left side frames 101. Electric push rods 202 are fixed on both sides of the connecting plate 201. The connecting plate 201 provides a fixed position for the two electric push rods 202 for installation. Top plates 203 are fixed to the ends of the two electric push rods 202 that are far apart from each other. The top plates 203 fixed to the electric push rods 202 below the connecting plate 201 can support the lower part of the left side transmission belt 104. The top plate 203 has evenly distributed sliding rods 2031 rotatably connected to the opposite sides of each other. The sliding rods 2031 effectively reduce the friction between the top plate 203 and the transmission belt 104. When the transmission belt 104 rotates on the driving pulley 103 and the driven pulley 106, it will drive the transmission belt 104 to rotate. Under the drive of the transmission belt 104, the sliding rods 2031 will rotate together. The sliding rods 2031 effectively reduce the friction between the top plate 203 and the transmission belt 104, ensuring the stability of the transmission of the transmission belt 104.

[0055] The bottom surface of the drive pulley 103 below the connecting plate 201 contacts the spring telescopic rod 204, while the top surface of the top plate 203 above the connecting plate 201 does not contact the transmission belt 104. Spring telescopic rods 204 are fixed between both top plates 203 and the connecting plate 201. Each spring telescopic rod 204 includes a fixed cylinder 2041 fixed to the side of the connecting plate 201, and a fixed rod 2042 slidably connected to the inner wall of the fixed cylinder 2041 on the side of the top plate 203 closest to the connecting plate 201. A spring 2043 is installed inside the cylinder 2041. When the electric push rod 202 drives the top plate 203 to move, the fixed rod 2042 will slide inside the fixed cylinder 2041. The elastic force generated by the deformed spring 2043 can apply pressure to the fixed rod 2042, providing preload force for the fixed cylinder 2041 and the fixed rod 2042, thereby improving the stability of the movement of the top plate 203. The fixed rod 2042 and the fixed cylinder 2041 can also guide the movement of the top plate 203.

[0056] Please refer to this carefully. Figure 3 and Figure 4The frame 101 is equipped with a second transfer mechanism 6 that works in conjunction with the diversion mechanism 2. The second transfer mechanism 6 includes a second motor 601 fixed on the frame 101. The output end of the second motor 601 is fixed with a drive roller 602. A driven roller 603 is rotatably connected to the frame 101. A belt 604 is installed on the drive roller 602 and the driven roller 603. Specifically, the height of the upper part of the belt 604 is the same as the height at which the left transmission belt 104 is lifted by the top plate 203, so that defective products can be diverted under the drive of the transmission belt 104 and the belt 604. The start of the second motor 601 will drive the drive roller 602 to rotate. The rotation of the drive roller 602 will work with the driven roller 603 to drive the belt 604 to rotate, and the rotating belt 604 will transfer the defective products.

[0057] Two symmetrical pressure rods 605 are rotatably connected to the frame 101. The two pressure rods 605 are located below the driven roller 603. When the electric push rod 202 is started, it will drive the top plate 203 to rise and fall. The top plate 203 will lift the upper part of the transmission belt 104. The pressure rods 605 can limit the upper part of the transmission belt 104, reducing the distance between the lifted transmission belt 104 and the belt 604 on its left side, so that defective circuit boards can be transferred more stably to the top surface of the belt 604.

[0058] Please refer to this carefully. Figure 1 and Figure 8An adjustment mechanism 3 for adjusting the position of the circuit board is provided between the two sets of frames 101. The adjustment mechanism 3 includes a mounting frame 301 fixed to the frame 101. Two mounting seats 302 are fixed on the top surface of the mounting frame 301. Rotating rods 304 are rotatably connected to the sides of the two mounting seats 302. Connecting rods 305 are rotatably connected to one end of each of the two rotating rods 304. A stabilizing rod 311 is rotatably connected between the two connecting rods 305. The stabilizing rod 311 is located at the end near the mounting seat 302 and can support the two connecting rods 305, thereby improving the position of the connecting rods 305, push plate 306, and mounting plate 305. The stability of the connection between the mounting bases 302 makes the movement of the connecting rods 305 and the push plate 306 more stable. The other ends of the two connecting rods 305 are fixed to the push plate 306. A servo motor 303 is fixed on the right mounting base 302. The output end of the servo motor 303 is fixed to the right rotating rod 304. A fixing frame 307 is fixed on the side of the mounting bracket 301. A placement platform 308 is fixed on the top surface of the fixing frame 307. A photoelectric sensor 312 is installed on the push plate 306. The photoelectric sensor 312 is an existing device. The photoelectric sensor 312 is a sensor that uses the photoelectric effect to detect objects. It detects the presence, position, distance, or size of an object by emitting a beam of light (usually infrared light or laser) and receiving reflected or transmitted light. It detects the circuit board on the rubber pillar 4 by using a photoelectric sensor 312. When the circuit board is detected by the photoelectric sensor 312, the photoelectric sensor 312 transmits the detected signal to the controller 5. The controller 5 controls the servo motor 303 to transfer the circuit board on the rubber pillar 4 to the air cushion 309 for subsequent static testing of the circuit board.

[0059] An air cushion 309 is fixed to the top surface of the placement platform 308, and a sponge strip 310 is fixed to the top surface of the push plate 306. The outer contour of the sponge strip 310 is rectangular. The air cushion 309 can effectively prevent the circuit board moving to the top surface of the placement platform 308 via the push plate 306 from shaking, thereby achieving complete stillness of the circuit board for static testing. When the circuit board contacts the sponge strip 310, the sponge strip 310 will deform, making the sponge strip 310 fit the circuit board more closely. The sponge strip 310 can increase the contact area between the push plate 306 and the circuit board, improving the stability of moving the circuit board.

[0060] Working Principle: When testing the circuit board, the circuit board is first placed on the rubber pillar 4 on the right-side conveyor belt 104 to improve the stability of the circuit board transfer, so as to perform dynamic tests that do not require the circuit board to be stationary. Then, the servo motor 303 is started to drive the rotating rod 304 to rotate. The rotating rod 304 drives the connecting rod 305 to rotate. The two connecting rods 305 together drive the push plate 306 to rotate, which in turn causes the push plate 306 to reciprocate counterclockwise. Through the two reciprocating push plates 306, the circuit board on the top surface of the rubber pillar 4 can be moved to the air cushion 309. At this time, the circuit board is stationary and can be subjected to static testing by the corresponding equipment. After the circuit board is tested, the two reciprocating push plates 306 can move the circuit board on the top surface of the air cushion 309 to the rubber pillar 4 on the other side of the conveyor belt 104 to complete the unloading work and wait for the defective products to be sorted. This device can continuously test the circuit boards, effectively improving work efficiency.

[0061] After the circuit board is transported to the rubber post 4 on the left-side transmission belt 104, the lower part of the transmission belt 104 is lifted by the cooperation of the connecting plate 201, the electric push rod 202, and the top plate 203. When the detection device 7 detects a defective product, the electric push rod 202 below the connecting plate 201 is activated, which drives the top plate 203 to move upward. At the same time, the electric push rod 202 fixed above the connecting plate 201 is activated, which drives the top plate 203 to rise. The top plate 203 and the sliding rod 2031 hold the upper part of the transmission belt 104, thereby transporting the defective products on the transmission belt 104 to the belt 604, completing the classification of defective products and avoiding unclear or missing markings during the marking and isolation process, which could lead to the defective products not being correctly identified.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A belt conveyor for loading and unloading products of varying thicknesses, comprising a first conveyor mechanism (1), the first conveyor mechanism (1) comprising two symmetrical frames (101) and a transmission belt (104), wherein a support component is fixed to the top surface of the transmission belt (104), and a controller (5) is mounted on the frame (101), characterized in that: The transmission belt (104) is provided with a diversion mechanism (2) for diverting products, and the frame (101) is provided with a second transfer mechanism (6) that cooperates with the diversion mechanism (2). An adjustment mechanism (3) for adjusting the position of the circuit board is provided between the two sets of frames (101). The diversion mechanism (2) includes a connecting plate (201) fixed between the left frame (101). Electric push rods (202) are fixed on both sides of the connecting plate (201). A top plate (203) is fixed to the ends of the two electric push rods (202) that are far apart from each other. The bottom surface of the drive pulley (103) below the connecting plate (201) contacts the spring telescopic rod (204). The top surface of the top plate (203) above the connecting plate (201) is connected to the transmission... The belt (104) does not contact each other. A spring telescopic rod (204) is fixed between the two top plates (203) and the connecting plate (201). The spring telescopic rod (204) includes a fixed cylinder (2041) fixed to the side of the connecting plate (201). A fixed rod (2042) is fixed to the side of the top plate (203) near the connecting plate (201) and is slidably connected to the inner wall of the fixed cylinder (2041). A spring (2043) is provided inside the fixed cylinder (2041). The second transfer mechanism (6) includes a second motor (601) fixed on the frame (101), an active roller (602) fixed at the output end of the second motor (601), a driven roller (603) rotatably connected on the frame (101), and belts (604) installed on the active roller (602) and the driven roller (603); The adjustment mechanism (3) includes a mounting frame (301) fixed to the frame (101). Two mounting seats (302) are fixed on the top surface of the mounting frame (301). Rotating rods (304) are rotatably connected to the sides of the two mounting seats (302). A connecting rod (305) is rotatably connected to one end of the two rotating rods (304). A push plate (306) is fixed to the other end of the two connecting rods (305). A servo motor (303) is fixed on the right mounting seat (302). The output end of the servo motor (303) is fixed to the right rotating rod (304). A fixing frame (307) is fixed to the side of the mounting frame (301). A placement platform (308) is fixed to the top surface of the fixing frame (307). A photoelectric sensor (312) is installed on the push plate (306).

2. The belt conveyor device for loading and unloading products of varying thicknesses for testing, as described in claim 1, is characterized in that: An air cushion (309) is fixed to the top surface of the placement platform (308), and a sponge strip (310) is fixed to the top surface of the push plate (306). The outer contour of the sponge strip (310) is rectangular.

3. The belt conveyor device for loading and unloading products of varying thicknesses for testing, as described in claim 1, is characterized in that: A stabilizing rod (311) is rotatably connected between the two connecting rods (305), the stabilizing rod (311) being located at one end near the mounting base (302).

4. The belt conveyor device for loading and unloading products of varying thicknesses for testing, as described in claim 1, is characterized in that: The supporting component is a rubber column (4), and the outer contour of the rubber column (4) is cylindrical.

5. The belt conveyor device for loading and unloading products of varying thicknesses for testing, as described in claim 4, is characterized in that: A pad is fixed to the top surface of the rubber column (4), and the height of the rubber column (4) and the pad is less than the height of the bottom surface of the belt (604).

6. The belt conveyor device for loading and unloading products of varying thicknesses for testing, as described in claim 1, is characterized in that: Two symmetrical pressure rods (605) are rotatably connected to the frame (101), and the two pressure rods (605) are located below the driven roller (603).

7. The belt conveyor device for loading and unloading products of varying thicknesses for testing, as described in claim 1, is characterized in that: A first motor (102) is installed at one end of the frame (101), and a drive pulley (103) is fixed at the output end of the first motor (102). A mounting plate (105) is rotatably connected to the other end of the frame (101).

8. A belt conveyor for loading and unloading products of varying thicknesses for testing, as described in claim 7, characterized in that: A driven pulley (106) is rotatably connected to the mounting plate (105), and the transmission belt (104) is sleeved on the driving pulley (103) and the driven pulley (106).

9. A belt conveyor for loading and unloading products of varying thicknesses for testing, as described in claim 8, characterized in that: The mounting plate (105) is fixed to one end of the frame (101) by bolts. A fixing plate (107) is fixed to the crossbar of the frame (101) by bolts. The fixing plate (107) is rotatably connected to the upright of the frame (101).

10. A belt conveyor for loading and unloading products of varying thicknesses for testing, as described in claim 1, characterized in that: Both top plates (203) are rotatably connected to evenly distributed sliding rods (2031) on the opposite sides of each other.

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