Lead-acid storage battery pre-sealing cover double-detection device

Abstract

The utility model discloses a lead-acid storage battery pre-sealing cover double-detection device, which comprises a conveying belt, a housing positioning assembly; the screen plate detection assembly comprises a detection head which is arranged above the fixed clamping plate and is used for detecting a screen plate above a pole group; the pole detection assembly comprises a support arranged on the side, away from the side where the pole is located when the storage battery is placed in the forward direction, of the conveying belt in the width direction of the conveying belt, the support is rotationally connected with a detection rod, and the tail end of the detection rod extends to the position above the conveying belt and can make contact with the peripheral face of the pole of the storage battery placed in the reverse direction. The support is provided with a trigger sensor located in the rotation path range of the detection rod. According to the utility model, whether a screen plate is arranged above each pole group in the storage battery and whether a pole column is positioned in the forward direction can be detected before the storage battery is pre-capped, manual detection is replaced, the detection reliability and accuracy are high, and the product yield is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to a dual-inspection device for pre-sealing lead-acid batteries. Background Technology

[0002] In the manufacturing process of lead-acid batteries, multiple series-connected electrode groups are typically installed inside the casing. The positive and negative electrodes are ultimately led out from one side of the casing via two terminals to form a complete current output structure. Current production processes generally employ assembly line operations to improve efficiency, where each electrode group cell requires an electrolyte filling process. Due to the small internal space of each cell and the presence of residual gas, conventional filling methods are difficult to operate and time-consuming. Therefore, industrial production commonly uses a vacuum-assisted automatic acid filling process, accelerating acid injection through a negative pressure environment.

[0003] However, the high-speed acid flow caused by vacuum filling can exert a strong impact on the electrode group diaphragm, posing a risk of damaging the diaphragm structure. To address this, some manufacturers install mesh panels above the electrode group to disperse the acid impact force and protect the diaphragm. However, in the current process, the placement of these mesh panels relies entirely on manual operation, with workers manually placing each panel one by one during the open transport stage when the battery casing is not sealed. This method is prone to errors due to operator negligence, resulting in the possibility of missing mesh panels.

[0004] Furthermore, the placement of the battery's core components, specifically the terminal blocks, still relies heavily on manual labor. Operators may mistakenly place the terminals in the wrong orientation, causing two terminals designed to be on the positive side to appear in opposite directions, thus reversing the terminal block positions and hindering subsequent processes.

[0005] In current battery production, the inspection of the aforementioned grid and terminal directions relies on manual visual inspection during the pre-sealing stage of the battery. Existing technology lacks effective inspection methods for both. During the open-shell conveying process, exposed components such as busbars and separators are prone to visual interference. In addition, visual fatigue caused by continuous operation leads to a high rate of missed inspections, which seriously affects the reliability of the production process and the product qualification rate.

[0006] Therefore, there is an urgent need for a device that can detect whether there is a mesh plate above each electrode group and whether the terminal post is in the positive direction before the battery is pre-sealed, so as to avoid the production of defective products after acid injection after sealing. Utility Model Content

[0007] The purpose of this utility model is to provide a dual inspection device for pre-sealing lead-acid batteries, which can detect whether a mesh plate is installed above each electrode group and whether the electrode post is in the correct orientation before pre-sealing the battery. This replaces manual inspection, has high reliability and accuracy, and effectively improves product yield.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a dual-inspection device for pre-sealing lead-acid batteries, comprising:

[0009] Conveyor belts are used to carry and transport batteries;

[0010] The housing positioning assembly is disposed on both sides of the conveyor belt, including a fixed clamping plate on one side and a movable clamping plate on the other side that can move along the width direction of the conveyor belt, and a clamping space is formed between the movable clamping plate and the fixed clamping plate;

[0011] The stencil detection assembly includes a detection head disposed above the fixed clamping plate for detecting the stencil above the electrode group;

[0012] The terminal detection assembly includes a bracket disposed along the width direction of the conveyor belt on the side away from the side where the terminal is located when the battery is placed upright. A detection rod is rotatably connected to the bracket. The end of the detection rod extends above the conveyor belt and can contact the circumferential surface of the terminal of the reverse-placed battery. A trigger sensor is provided on the bracket within the rotation path range of the detection rod. When the detection rod is rotated to a set angle by the impact of the terminal, the trigger sensor is triggered and outputs a detection signal.

[0013] A further improvement of this utility model is that the number of detection heads is half the number of battery electrode groups, all the detection heads are evenly spaced on the mounting plate, and two adjacent detection heads correspond to two electrode groups with a gap of one electrode group. A driving component is provided on one side of the mounting plate to drive its movement.

[0014] A further improvement of this utility model is that the movable clamping plate includes a clamping part arranged along the conveying direction of the conveyor belt and an intercepting part arranged on the clamping part, wherein the length direction of the intercepting part is perpendicular to the length direction of the clamping part.

[0015] A further improvement of this utility model is that the width of the conveyor belt is greater than the width of the battery casing, the terminal detection assembly is located downstream of the mesh plate detection assembly, and guide assemblies are provided between the terminal detection assembly and the mesh plate detection assembly, as well as upstream of the mesh plate detection assembly, to facilitate battery alignment.

[0016] A further improvement of this utility model is that the guiding assembly includes two guide plates horizontally spaced above the conveyor belt. The adjacent surfaces of the two guide plates gradually approach each other from front to back along the conveying direction to form a tapered guiding channel. The minimum spacing of the guiding channel is adapted to the width of the battery casing. The intercepting part and the detection rod are both located on the conveying path of the guiding channel in the initial state.

[0017] A further improvement of this utility model is that the detection rod includes two parallel connecting strips, and a plurality of rotating columns are rotatably connected between the two connecting strips at equal intervals, wherein the diameter of the rotating columns is greater than the width of the connecting strips.

[0018] A further improvement of this utility model is that an initial positioning block is provided on one side of the detection rod on the bracket. When the detection rod contacts the stop surface of the initial positioning block, it is in the initial state. When the detection rod is rotated by the impact of the pole post, it disengages from the stop surface and rotates to avoid the pole post.

[0019] A further improvement of this utility model is that the bracket is provided with a rotating shaft, and the detection rod is rotatably connected to the rotating shaft through an elastic reset member.

[0020] A further improvement of this utility model is that the elastic reset component is a torsion spring, which is sleeved on the rotating shaft, with one end fixed to the detection rod and the other end fixed to the bracket.

[0021] A further improvement of this utility model is that it also includes a discharge mechanism disposed downstream of the mesh plate detection assembly and the pole detection assembly. The discharge mechanism includes a push-out cylinder disposed on one side of the conveyor belt and a defective product collection platform disposed on the other side of the conveyor belt and cooperating with the push-out cylinder.

[0022] The beneficial effects of this utility model are as follows:

[0023] This invention, through the cooperation of a mesh plate detection component and a housing positioning component, can replace manual labor in inspecting the mesh plates in each cell of the battery. The inspection is stable and highly accurate, ensuring that each cell of the battery is effectively protected, thereby improving product quality and production efficiency.

[0024] This invention can replace manual labor in inspecting batteries placed upside down on a conveyor belt. It can identify whether the terminals are in the correct orientation, with high accuracy and reliability, reducing quality problems and production delays caused by incorrect placement.

[0025] The number of detection heads in this invention is half the number of pole groups (e.g., only 3 detection heads are needed for 6 pole groups), reducing the number of detection heads and cost. At the same time, the detection heads are moved by the driving component, which can cover the entire pole group and ensure the integrity of the detection.

[0026] The movable clamp of this utility model includes a clamping part and an intercepting part. It first intercepts and then pushes the battery housing to clamp it. The intercepting part limits the front and rear of the battery housing, so that it can move accurately under the detection head for detection and improve the stability of the detection.

[0027] This invention features two sets of guide plates. When the positioning cylinder retracts, the intercepting part is located on the conveying path between the first set of guide plates, which can effectively guide and position the battery, ensuring that the moving clamp can stably hold the battery casing. The detection rod is located on the exit path of the guide channel formed by the second set of guide plates, ensuring the stability of the detection.

[0028] This invention features two connecting strips that are rotatably connected at equal intervals to a number of rotating columns. The rotating columns and the electrode posts make rolling contact instead of sliding friction, thus avoiding scratches on the electrode post surface and improving testing safety.

[0029] This invention, by setting up a discharge mechanism, can push out defective products and prevent them from flowing downstream and causing impact. Attached Figure Description

[0030] Figure 1 This is a top view of the structure of this utility model.

[0031] Figure 2 This is a side view schematic diagram of the structure of the mesh detection component of this utility model.

[0032] Figure 3 This is a side view schematic diagram of the pole detection assembly of Embodiment 1 of this utility model.

[0033] Figure 4 This is a side view schematic diagram of the pole detection assembly of Embodiment 2 of this utility model.

[0034] Figure 5 This is a top view schematic diagram of the structure of the pole detection component of this utility model.

[0035] In the diagram, 1-conveyor belt, 2-fixed clamping plate, 3-moving clamping plate, 4-detection head, 5-support, 6-detection rod, 7-trigger sensor, 8-mounting plate, 9-drive component, 10-clamping part, 11-interception part, 12-guide plate, 13-connecting bar, 14-rotating column, 15-initial positioning block, 16-rotating shaft, 17-ejection cylinder, 18-defective product collection platform, 19-limiting block, 20-torsion spring. Detailed Implementation

[0036] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1: Combination Figures 1-3 and Figure 5 It is known that a lead-acid battery pre-sealing dual-inspection device includes:

[0038] Conveyor belt 1 is used to carry and transport batteries;

[0039] The housing positioning assembly is set on both sides of the conveyor belt 1, including a fixed clamping plate 2 on one side and a movable clamping plate 3 on the other side that can move along the width direction of the conveyor belt 1, and a clamping space is formed between the movable clamping plate 3 and the fixed clamping plate 2.

[0040] The stencil detection assembly includes a detection head 4 disposed above the fixed clamping plate 2 for detecting the stencil above the electrode group;

[0041] The terminal detection assembly includes a bracket 5 disposed along the width direction of the conveyor belt 1 on the side away from the side where the terminal is located when the battery is placed in the forward direction. A detection rod 6 is rotatably connected to the bracket 5. The end of the detection rod 6 extends above the conveyor belt 1 and can contact the circumferential surface of the terminal of the reverse-placed battery. A trigger sensor 7 is provided on the bracket 5 within the rotation path range of the detection rod 6. When the detection rod 6 is rotated to a set angle by the impact of the terminal, the trigger sensor 7 is triggered and outputs a detection signal.

[0042] The number of detection heads 4 is half the number of battery electrode groups. All detection heads 4 are evenly spaced on the mounting plate 8, with two adjacent detection heads 4 corresponding to two electrode groups separated by one electrode group. A drive member 9 is provided on one side of the mounting plate 8 to move it. Preferably, the drive member 9 is a telescopic rod, and the extension and retraction direction of the telescopic rod is consistent with the length direction of the conveyor belt 1.

[0043] Optionally, the detection head 4 is a photoelectric sensor that detects the presence of the screen by emitting infrared light or laser light and detecting changes in the intensity of reflected or transmitted light from the screen.

[0044] The screen used by the applicant in actual use is pink. Optionally, the detection head 4 is an RGB color sensor that identifies the RGB values ​​of the screen through red, green, and blue three-channel spectral analysis (pink typically corresponds to a higher R value), and supports ambient light compensation. Examples include TCS34725, AMS TCS34725, AMS AS7341, and MAX44005.

[0045] In existing batteries, the number of electrode groups is generally even. Taking a battery with 6 electrode groups as an example, the present invention has 3 detection heads 4. After the housing positioning assembly positions the battery housing, the 3 detection heads correspond to the first, third, and fifth electrode groups of the battery, respectively, and detect the presence or absence of the mesh plate above them. Then, the driving component 9 extends, and the detection heads move as a whole, and then correspond to the second, fourth, and sixth electrode groups of the battery for detection.

[0046] Optionally, the number of detection heads 4 in this invention is consistent with the number of electrode groups in the battery, with each detection head 4 corresponding one-to-one with an electrode group in the positioned battery. Compared to having half the number of electrode groups, this increases the number of detection heads and reduces the number of drive components 9.

[0047] The housing positioning assembly also includes a positioning cylinder, the extension and retraction direction of which is parallel to the width direction of the conveyor belt 1. A movable clamping plate 3 is disposed on the extension and retraction end of the positioning cylinder. The movable clamping plate 3 and the fixed clamping plate 2 cooperate to clamp and fix the battery. A proximity sensor is provided on one side of the positioning cylinder for detecting whether the battery is in position.

[0048] The moving clamp 3 includes a clamping part 10 arranged along the conveying direction of the conveyor belt 1 and an intercepting part 11 arranged on the clamping part 10. The length direction of the intercepting part 11 is perpendicular to the length direction of the clamping part 10. The intercepting part 11 is located at one end of the clamping part 10, and the battery is intercepted by the intercepting part 11 after moving to one side of the clamping part 10. The length of the intercepting part 11 is shorter than the width of the battery casing, ensuring that the battery casing can be stably clamped by the moving clamp 3 and the fixed clamp 2.

[0049] The width of conveyor belt 1 is greater than the width of the battery casing. The terminal detection assembly is located downstream of the mesh plate detection assembly. Guide components are provided between the terminal detection assembly and the mesh plate detection assembly, as well as upstream of the mesh plate detection assembly, to facilitate battery alignment. The first set of guide components guides the battery, which may be slightly skewed on conveyor belt 1, to keep it straight so that the moving clamp 3 can hold it. After the mesh plate detection assembly completes its detection, the moving clamp 3 releases its grip on the battery. The battery then continues to move with conveyor belt 1, and its position is adjusted by the second set of guide components from the middle-to-edge area of ​​conveyor belt 1 to the middle area of ​​conveyor belt 1 so that the detection rod 6 can detect it.

[0050] The guiding assembly includes two guide plates 12 horizontally spaced above the conveyor belt 1. The adjacent surfaces of the two guide plates 12 gradually approach each other from front to back along the conveying direction to form a tapered guiding channel. The minimum spacing of the guiding channel is adapted to the width of the battery casing. The intercepting part 11 and the detection rod 6 are both located on the conveying path of the guiding channel in the initial state.

[0051] The detection rod 6 includes two parallel connecting strips 13, with a plurality of rotating columns 14 rotatably connected between the two connecting strips 13 at equal intervals. The diameter of the rotating columns 14 is larger than the width of the connecting strips 13. A rotating shaft 16 is provided on the bracket 5. Preferably, the detection rod 6 includes a connecting part rotatably connected to the rotating shaft 16, with the connecting strips 13 disposed at one end of the connecting part. The connection between the connecting part and the rotating shaft 16 provides higher stability.

[0052] The height and length of the detection rod 6 can be adjusted as needed so that it can contact the circumferential surface of the reversed battery terminals on the conveyor belt 1, thereby being impacted and squeezed open to achieve detection. The length of the detection rod 6 is limited, so it can detect reversed terminals without contacting the forward terminals. The terminals in the normal direction will not contact the detection rod when they move with the conveyor belt, thus realizing the identification of reversed terminals.

[0053] An initial positioning block 15 is provided on one side of the detection rod on the bracket 5. When the detection rod 6 contacts the stop surface of the initial positioning block 15, it is in its initial state. When the detection rod 6 is rotated by the impact of the pole post, it disengages from the stop surface and rotates to avoid the pole post. By setting the initial positioning block 15, firstly, the detection rod 6 can be positioned to ensure that it is in the correct initial position, thus improving the accuracy and consistency of the detection; secondly, if the detection rod 6 is manually lowered for reset, the positioning and reset can be performed quickly.

[0054] The bracket 5 is also equipped with a limiting block, the stop surface of which can contact the detection rod 6. The detection rod 6 is located between the limiting block and the initial positioning block 15, and the rotation range of the detection rod 6 is greater than 60°. When the detection rod 6 needs to be manually reset, the design of the limiting block prevents the detection rod 6 from rotating excessively, while not affecting the avoidance rotation required by the detection rod 6 after being squeezed by the pole post.

[0055] When the detection rod 6 is manually reset, the bracket 2 may be equipped with an alarm electrically connected to the trigger sensor 5. The alarm can promptly issue a warning when an abnormality is detected, reminding operators to take action, thus improving the safety and response speed of the production line. The alarm is activated after the trigger sensor 7 detects a signal, which is a conventional linkage in the prior art. Preferably, the bracket 2 is equipped with a control button for resetting the alarm.

[0056] Preferably, the trigger sensor 7 is a proximity switch, located within a range of 10° to 60° of rotation of the detection rod 6. The set rotation angle range ensures that the detection rod operates within a reasonable range, avoiding false triggering and improving the reliability of the system.

[0057] It also includes a discharge mechanism located downstream of the mesh plate detection assembly and the terminal detection assembly. The discharge mechanism includes a push-out cylinder 17 located on one side of the conveyor belt 1 and a defective product collection platform 18 located on the other side of the conveyor belt 1, which cooperates with the push-out cylinder 17. The push-out cylinder 17 is electrically connected to the mesh plate detection assembly and the terminal detection assembly. When the mesh plate detection assembly detects that no mesh plate is placed, the push-out cylinder 17 extends and pushes the battery out of the conveyor belt 1 when the battery moves into the working range of the discharge mechanism. Similarly, when the terminal detection assembly detects that a terminal is reversed, the push-out cylinder 17 extends and pushes the battery out of the conveyor belt 1 when the battery moves into the working range of the discharge mechanism.

[0058] A proximity sensor is provided on one side of the ejection cylinder 12 to detect whether the battery is in position. A vertical plate is provided on the telescopic end of the ejection cylinder 12 to facilitate ejection.

[0059] Example 2: Combination Figure 4 As can be seen, this embodiment modifies the structure in embodiment 1 based on embodiment 1. The modified technical solution is as follows:

[0060] The bracket 5 is equipped with a rotating shaft 16, and the detection rod 6 is rotatably connected to the rotating shaft 16 through an elastic reset member.

[0061] Preferably, the elastic reset element is a torsion spring 20, which is sleeved on the rotating shaft 16, with one end fixed to the detection rod 6 and the other end fixed to the bracket 5.

[0062] Preferably, to ensure efficient system operation, the torque of the torsion spring 20 should be adjusted to a level that ensures the detection rod 6 can return to its original position smoothly. This avoids unnecessary obstruction or blockage of the battery on the conveyor belt 1 due to excessive torque, thus ensuring the smooth passage of the battery during transport.

[0063] The detection rod 4 automatically returns to its original position after being impacted, requiring no manual intervention, and can continue to detect the next battery, adapting to the high-speed continuous production rhythm. In this embodiment, the limit block 9 can be omitted.

[0064] The other structures in this embodiment are the same as in embodiment 1, and will not be described again here.

[0065] The working principle of the lead-acid battery pre-sealing dual inspection device provided by the utility model is as follows: (taking a battery with 6 pole groups as an example) During operation, the battery moves with the conveyor belt 1, is guided by the two guide plates 12 of the first set of guide components, and is intercepted by the interception part 11 of the housing positioning component. Then the conveyor belt 1 stops, and the positioning cylinder extends so that the moving clamp 3 cooperates with the fixed clamp 2 to clamp and fix the battery. At this time, the three detection heads correspond to the first, third, and fifth pole groups of the battery, respectively, and check whether the mesh plate above them is present. Then the drive component 9 extends, and the detection heads move as a whole, and then check the second, fourth, and sixth pole groups of the battery. After the detection is completed... After the positioning cylinder resets, the conveyor belt 1 continues to run, and the battery continues to move. After being guided by the two guide plates 12 of the second set of guide components, its position is adjusted. Then the battery moves to the detection rod 6. If the terminal is in the correct direction, it will not contact the detection rod 6. If the terminal is in the wrong direction, it will contact the detection rod 6. The detection rod 6 rotates after being squeezed by the terminal, avoiding the terminal and triggering the trigger sensor 7. When the battery passes the push-out cylinder 17, if it is detected as defective by either the mesh plate detection component or the terminal detection component, the push-out cylinder 17 extends and pushes the defective product from the conveyor belt 1 to the defective product collection platform 13. Good products continue to move.

[0066] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A dual-inspection device for pre-sealing lead-acid batteries, characterized in that, include: Conveyor belt (1) is used to carry and transport batteries; The housing positioning assembly is set on both sides of the conveyor belt (1), including a fixed clamping plate (2) on one side and a movable clamping plate (3) on the other side that can move along the width direction of the conveyor belt (1), and a clamping space is formed between the movable clamping plate (3) and the fixed clamping plate (2); The screen plate detection assembly includes a detection head (4) disposed above the fixed clamping plate (2) for detecting the screen plate above the electrode group; The terminal detection assembly includes a bracket (5) disposed along the width direction of the conveyor belt (1) on the side away from the side where the terminal is located when the battery is placed in the forward direction. A detection rod (6) is rotatably connected to the bracket (5). The end of the detection rod (6) extends above the conveyor belt (1) and can contact the circumferential surface of the terminal of the reverse-placed battery. A trigger sensor (7) is provided on the bracket (5) within the rotation path range of the detection rod (6). When the detection rod (6) is rotated to a set angle by the impact of the terminal, the trigger sensor (7) is triggered and outputs a detection signal.

2. The lead-acid battery pre-sealing dual inspection device according to claim 1, characterized in that: The number of detection heads (4) is half the number of battery pole groups. All the detection heads (4) are evenly spaced on the mounting plate (8). Two adjacent detection heads (4) correspond to two pole groups separated by one pole group. One side of the mounting plate (8) is provided with a driving member (9) to move it.

3. The lead-acid battery pre-sealing dual inspection device according to claim 2, characterized in that: The moving clamp (3) includes a clamping part (10) arranged along the conveying direction of the conveyor belt (1) and an intercepting part (11) arranged on the clamping part (10). The length direction of the intercepting part (11) is perpendicular to the length direction of the clamping part (10).

4. The lead-acid battery pre-sealing dual inspection device according to claim 3, characterized in that: The width of the conveyor belt (1) is greater than the width of the battery casing. The pole detection assembly is located downstream of the mesh plate detection assembly. Guide components are provided between the pole detection assembly and the mesh plate detection assembly, as well as upstream of the mesh plate detection assembly, to facilitate battery alignment.

5. A dual-inspection device for pre-sealing lead-acid batteries according to claim 4, characterized in that: The guiding assembly includes two guide plates (12) horizontally spaced above the conveyor belt (1). The adjacent surfaces of the two guide plates (12) gradually approach each other from front to back along the conveying direction to form a tapered guiding channel. The minimum spacing of the guiding channel is adapted to the width of the battery casing. The intercepting part (11) and the detection rod (6) are both located on the conveying path of the guiding channel in the initial state.

6. A dual-inspection device for pre-sealing lead-acid batteries according to claim 1 or 2, characterized in that: The detection rod (6) includes two parallel connecting strips (13), and several rotating columns (14) are rotatably connected between the two connecting strips (13) at equal intervals. The diameter of the rotating columns (14) is greater than the width of the connecting strips (13).

7. The dual-inspection device for pre-sealing lead-acid batteries according to claim 1, characterized in that: An initial positioning block (15) is provided on one side of the detection rod on the bracket (5). When the detection rod (6) contacts the stop surface of the initial positioning block (15), it is in the initial state. When the detection rod (6) is hit and rotated by the pole, it disengages from the stop surface and rotates to avoid the pole.

8. The dual-inspection device for pre-sealing lead-acid batteries according to claim 1, characterized in that: The bracket (5) is provided with a rotating shaft (16), and the detection rod (6) is rotatably connected to the rotating shaft (16) through an elastic reset member.

9. A dual-inspection device for pre-sealing lead-acid batteries according to claim 8, characterized in that: The elastic reset component is a torsion spring, which is sleeved on the rotating shaft (16), with one end fixed to the detection rod (6) and the other end fixed to the bracket (5).

10. A dual-inspection device for pre-sealing lead-acid batteries according to any one of claims 1 to 5, characterized in that: It also includes a discharge mechanism located downstream of the mesh plate detection assembly and the pole detection assembly. The discharge mechanism includes a push-out cylinder (17) located on one side of the conveyor belt (1) and a defective product collection platform (18) located on the other side of the conveyor belt (1) and cooperating with the push-out cylinder (17).

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