Capping device

Abstract

The utility model discloses a cap sealing device. The cap sealing device comprises a rack, a conveying belt, a feeding mechanism and a cap screwing mechanism. The cap screwing mechanism comprises a main body, a connecting base, a first driving piece, at least two second driving pieces, at least two clamping pieces and at least two guiding pieces, and the at least two guiding pieces are connected to the peripheral wall of the connecting base at intervals and protrude out of the end face of the connecting base in the extending direction of the connecting base. The midpoint of the connecting line of the at least two guiding pieces and the midpoint of the connecting line of the at least two clamping pieces are located on the same straight line, guiding faces are formed on the opposite surfaces of the protruding parts of the guiding pieces, and the guiding faces are obliquely arranged in the direction from the ends of the guiding pieces to the connecting base to the middle of the connecting base. Precise butt joint of the cap screwing mechanism in the cap sealing device and a tank cap in the descending process is achieved, the accuracy and stability of clamping the tank cap by the clamping jaw are improved, and the yield and the working efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solder paste packaging, in particular to a capping device Background Art

[0002] Solder paste refers to the technology of printing and applying solder paste on the pads of printed circuit boards, accurately placing surface mount components on the pads coated with solder paste, heating the circuit boards according to a specific reflow temperature curve, melting the solder paste, and forming solder joints between the components and the printed circuit boards after the alloy components cool and solidify to achieve metallurgical connection.

[0003] After the solder paste is stirred and ground, it needs to be packaged into different solder paste cans or solder paste barrels to achieve the effect of quantitative packaging. After packaging, it needs to be capped to achieve the effect of container closure. The existing capping device includes a conveyor belt solder paste can feeding, a lower cover mechanism and a screwing cover mechanism. The filled solder paste can passes through the lower cover mechanism in turn to close the can cover to the corresponding position, and then the can cover is clamped and rotated by the screwing cover mechanism to tighten it. The screwing cover mechanism includes three processes: descending, clamping, and rotating. The descending process requires the clamping claw to be clamped to the edge of the can cover. However, the solder paste can is located in the process of being transported by the conveyor belt due to shaking, vibration, etc., which causes the can to be offset. When it reaches the bottom of the screwing cover mechanism, it is not aligned with the space in the clamping claw, resulting in the clamping claw pressing down on the can cover or the edge of the solder paste can during the descent process, causing damage and failure to screw the can cover normally. It has a low yield rate and requires manual extraction of defective products, resulting in low work efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the problems in the related art to a certain extent. To this end, one of the purposes of the utility model is to provide a capping device for realizing the precise docking of the cap screwing mechanism with the can lid during the descending process of the capping device, improving the accuracy and stability of the clamping claws holding the can lid, and improving the yield rate and work efficiency.

[0005] A capping device, comprising:

[0006] frame;

[0007] A conveyor belt, which is arranged on the frame and is used to transport the can body;

[0008] A feeding mechanism, which is arranged on the frame and on one side of the conveyor belt, and is used to convey the cover body to the can body;

[0009] A capping mechanism, wherein the feeding mechanism and the capping mechanism are arranged in parallel along the conveying direction of the conveyor belt, the capping mechanism comprises a main body, a connecting seat, a first driving member, at least two second driving members, at least two clamping members and at least two guide members, the main body is connected to the frame and arranged on one side of the conveyor belt, one end of the first driving member is connected to the main body, and the other end is driven to connect to the connecting seat, the connecting seat is located above the conveyor belt, the first driving member drives the connecting seat to rotate and move in the vertical direction, at least two of the second driving members are arranged in the connecting seat, and the driving end of the second driving member drives The clamping member is dynamically connected to the connecting seat, at least two of the clamping members are extended along the extension direction of the connecting seat and protrude from the end face of the connecting seat, the second driving member drives the clamping member to approach or move away from the connecting seat, at least two of the guide members are connected to the outer peripheral wall of the connecting seat at intervals, and protrude from the end face of the connecting seat along the extension direction of the connecting seat, the midpoint of the line connecting at least two of the guide members and the midpoint of the line connecting at least two clamping members are located on the same straight line, and the surfaces opposite to the protruding parts of the guide members are formed with guide surfaces, and the guide surfaces are inclined along the direction from the end of the guide member to the connecting seat toward the middle of the connecting seat.

[0010] Furthermore, at least two of the clamping members are arranged at intervals, and at least two of the clamping members and at least two of the guide members are arranged in a staggered manner.

[0011] Furthermore, the length of the guide member protruding from the end surface of the connecting seat is greater than the protruding length of the clamping member.

[0012] Furthermore, the side edge of the guide surface close to the connecting seat and the end surface of the clamping member are located in the same horizontal plane.

[0013] Furthermore, the guide member is made of stainless steel or aluminum alloy.

[0014] Furthermore, the guide member and the connecting seat are an integrally formed structure.

[0015] Furthermore, the side surface of the protruding portion of the clamping member close to the middle portion of the connecting seat is provided with anti-slip grooves.

[0016] Furthermore, the capping device also includes a pushing mechanism, which is connected to the frame and arranged on the side of the conveyor belt opposite to the capping mechanism. The pushing mechanism includes a third driving member and a pushing member. One end of the third driving member is connected to the frame, and the other end is drivingly connected to the pushing member. The third driving member drives the pushing member to reciprocate along a direction perpendicular to the extension direction of the conveyor belt.

[0017] The above-mentioned technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art: a capping device provided by the present application comprises a frame, a conveyor belt, a feeding mechanism and a capping mechanism; the conveyor belt is arranged on the frame, and the conveyor belt is used to convey the can body; the feeding mechanism is arranged on the frame and on one side of the conveyor belt, and the feeding mechanism is used to convey the cap body to the can body; the feeding mechanism and the capping mechanism are arranged side by side along the conveying direction of the conveyor belt, and the capping mechanism comprises a main body, a connecting seat, a first driving member, at least two second driving members, at least two clamping members and at least two guide members, the main body is connected to the frame and is arranged on one side of the conveyor belt, one end of the first driving member is connected to the main body, and the other end is driven and connected to the connecting seat, and the connecting seat is located on the conveyor belt. Above the belt, the first driving member drives the connecting seat to rotate and move in the vertical direction, at least two of the second driving members are arranged in the connecting seat, and the driving end of one of the second driving members drives and connects to one of the clamping members, at least two of the clamping members are extended along the extension direction of the connecting seat and protrude from the end face of the connecting seat, and the second driving member drives the clamping member to approach or move away from the connecting seat, at least two of the guide members are connected to the outer peripheral wall of the connecting seat at intervals, and protrude from the end face of the connecting seat along the extension direction of the connecting seat, the midpoint of the line connecting at least two of the guide members and the midpoint of the line connecting at least two of the clamping members are located on the same straight line, and the surfaces opposite to the protruding parts of the guide members are formed with guide surfaces, and the guide surfaces are inclined in the direction from the end of the guide member to the connecting seat toward the middle of the connecting seat. The present application connects at least two clamping members and at least two guide members arranged at intervals through a connecting seat in a cap screwing mechanism, the guide members protrude from the end face of the connecting seat along the extension direction of the connecting seat, and the surfaces opposite to the protruding parts of the guide members are formed with guide surfaces, and the guide surfaces are inclined along the direction from the end of the guide members to the connecting seat toward the middle of the connecting seat. When the cap screwing mechanism is in the descending process, the inclined surface of the guide member can have the effect of abutting and adjusting the position of the can cover, and can gradually guide the can cover to the space enclosed by the guide members by abutting against the inclined surface, so as to achieve the effect of adjusting the position of the can cover and the solder paste can, thereby realizing the precise docking of the can cover with the can cover during the descending process of the cap screwing mechanism in the capping device, improving the accuracy and stability of the clamping jaws in clamping the can cover, and improving the yield rate and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] In the attached figure:

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a capping device of the present application;

[0022] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 This is a structural schematic diagram of the capping mechanism in the capping device of the present application;

[0024] Figure 4 It is a front view of the cap screwing mechanism in the capping device of the present application.

[0025] Figure numerals: 1. capping device; 10. frame; 20. conveyor belt; 30. feeding mechanism; 40. capping mechanism; 41. main body; 42. connecting seat; 43. clamping member; 431. anti-slip groove; 44. guide member; 441. guide surface; 50. pushing mechanism; 51. third driving member; 53. pushing member. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "rear", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the mechanism or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0027] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0028] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, mechanisms, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0029] like Figure 1 - Figure 4As shown, a capping device 1 provided in the present application includes a frame 10, a conveyor belt 20, a feeding mechanism 30 and a capping mechanism 40; the conveyor belt 20 is arranged on the frame 10, and the conveyor belt 20 is used to transport the can body; the feeding mechanism 30 is arranged on the frame 10 and on one side of the conveyor belt 20, and the feeding mechanism 30 is used to transport the cover body to the can body; the feeding mechanism 30 and the capping mechanism 40 are arranged side by side along the conveying direction of the conveyor belt 20, and the capping mechanism 40 includes a main body 41, a connecting seat 42, a first driving member, at least two second driving members, at least two clamping members 43 and at least two guide members 44, the main body 41 is connected to the frame 10, and is arranged on one side of the conveyor belt 20, one end of the first driving member is connected to the main body 41, and the other end is driven to connect to the connecting seat 42, the connecting seat 42 is located above the conveyor belt 20, and the first driving member is connected to the main body 41. A driving member drives the connecting seat 42 to rotate and move in the vertical direction. At least two second driving members are arranged in the connecting seat 42. The driving end of the second driving member drives and connects a clamping member 43. At least two clamping members 43 are extended along the extension direction of the connecting seat 42 and protrude from the end surface of the connecting seat 42. The second driving member drives the clamping member 43 to approach or move away from the connecting seat 42. At least two guide members 44 are connected to the outer peripheral wall of the connecting seat 42 at intervals and protrude from the end surface of the connecting seat 42 along the extension direction of the connecting seat 42. The midpoint of the line connecting the at least two guide members 44 and the midpoint of the line connecting the at least two clamping members 43 are located on the same straight line. The opposite surface of the protruding part of the guide member 44 is formed with a guide surface 441, and the guide surface 441 is inclined in the direction from the end of the guide member 44 to the connecting seat 42 toward the middle of the connecting seat 42.

[0030] Specifically, the conveyor belt 20 is arranged on the frame 10, and a feeding mechanism 30 and a capping mechanism 40 are arranged in the extending direction of the conveyor belt 20. One end of the conveyor belt 20, i.e., the starting end, can be connected to the feeding mechanism 30 of the solder paste can or the solder paste barrel, and the other end, i.e., the terminal end, can be connected to the unloading collection plate. The feeding mechanism 30 is arranged on the frame 10 and is arranged on one side of the conveyor belt 20. The feeding mechanism 30 is provided with a feeding plate, a conveyor belt and an upper cover assembly. The can cover can be transported to the conveyor belt through the feeding plate, and then covered on the opening of the solder paste can or the solder paste barrel on the conveyor belt 20 through the upper cover assembly. The upper cover assembly can press the can cover transported on the conveyor belt onto the solder paste can or the solder paste barrel by pressing down. The capping mechanism 40 includes a main body 41, a connecting seat 42, a first driving member, at least two second driving members, at least two clamping members 43 and at least two guide members 44. The main body 41 is connected to the frame 10 and is arranged on one side of the conveyor belt 20. The first driving member can be a combination of a cylinder and a motor, and the first driving member can drive the connection seat 42 to move up and down in the vertical direction, and can also drive the connection seat 42 to rotate; the second driving member can be a cylinder, and the clamping member 43 is connected to the side wall of the connection seat 42 and protrudes from the end face of the connection seat 42 in the vertical direction. The second driving member can drive the clamping member 43 to approach or move away from the connection seat 42. The setting of at least two clamping members 43 is set on the peripheral side wall of the connection seat 42. By synchronizing the at least two clamping members 43 to approach the connection seat 42, the space between the multiple clamping members 43 can be reduced, thereby playing a clamping role, and then cooperate with the first driving member to drive the connection seat 42 to rotate, thereby driving the multiple clamping members 43 to rotate, and realizing the effect of rotating the tank cover. Further, at least two guide members 44 are connected to the outer peripheral wall of the connection seat 42 at intervals, and the lower end of the guide member 44 is close to the side surface of the middle part of the connection seat 42 as an inclined surface, and the inclined surface is the direction from the lower end of the guide member 44 to the connection seat 42 toward the middle part of the connection seat 42. The inclined surface is inclined toward the middle part of the connection seat 42. It is understood that the plane connected to the inclined surface extends in the vertical direction, and the space enclosed between the inclined surfaces of the plurality of guide members 44 gradually decreases from bottom to top, and is the smallest when reaching the plane. In this embodiment, the diameter of the space enclosed between the planes can be set to be equal to or slightly larger than the diameter of the tank cover, and the diameter of the space enclosed by the inclined surface is larger than the diameter of the tank cover. Therefore, when the connecting seat 42 is pressed down, the inclined surface of the guide member 44 first contacts the edge of the tank cover. As the connecting seat 42 is continuously pressed down, the edge of the tank cover continuously moves against the inclined surface, and then the tank cover gradually moves toward the middle of the connecting seat 42, achieving the effect of guiding displacement correction. Finally, the tank cover reaches the plane, and the space enclosed between the planes of the plurality of guide members 44 can maintain the position of the tank cover.Since the midpoint of the line connecting at least two guide members 44 and the midpoint of the line connecting at least two clamping members 43 are located on the same straight line, the position of the can lid after correction corresponds to the space enclosed by the multiple clamping members 43. After the clamping members 43 are pressed down, the can lid can be kept between the multiple clamping members 43, thereby achieving the effect of the can lid being located between the multiple clamping members 43, and avoiding the situation where the clamping claws will press down to press the can lid or the edge of the solder paste can during the descending process. When the multiple clamping members 43 are retracted, the clamping members 43 can be clamped on the edge of the can lid, achieving the effect of precise alignment and clamping of the clamping members 43.

[0031] It can be understood that the working steps of the capping mechanism 40 are as follows: the product after the tank cap is loaded reaches the working position of the capping mechanism 40, the first driving member drives the connecting seat 42 to descend, the connecting seat 42 drives the clamping member 43 and the guide member 44 to descend, the guide member 44 adjusts the position of the product, the tank cap reaches the working position of the clamping member 43, the second driving member drives the clamping member 43 to contract, clamp and rotate, the first driving member drives the connecting seat 42 to rise, and the capping process is completed.

[0032] The above-mentioned technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art: the present application connects at least two clamping members 43 and at least two guide members 44 arranged at intervals through the connecting seat 42 in the cap screwing mechanism 40, the guide member 44 protrudes from the end face of the connecting seat 42 along the extension direction of the connecting seat 42, and the surface opposite to the protruding part of the guide member 44 is formed with a guide surface 441, and the guide surface 441 is inclined along the direction from the end of the guide member 44 to the connecting seat 42 toward the middle of the connecting seat 42. When the cap screwing mechanism 40 is in the descending process, the inclined surface of the guide member 44 can have the effect of abutting and adjusting the edge of the can cover, and the can cover can be gradually guided to the space enclosed by the guide members 44 by abutting the inclined surface, so as to achieve the effect of adjusting the position of the can cover and the solder paste can, thereby realizing the precise docking of the cap screwing mechanism 40 in the capping device 1 with the can cover during the descending process, improving the accuracy and stability of the clamping claws in clamping the can cover, and improving the yield rate and work efficiency.

[0033] Further, at least two clamping members 43 are arranged at intervals, and at least two clamping members 43 and at least two guide members 44 are arranged at intervals in a staggered manner. In this embodiment, at least two clamping members 43 and at least two guide members 44 are arranged at intervals in a staggered manner. Such a design not only improves the stability of the overall structure, but also makes the operation process smoother. The interference between the clamping members 43 and the guide members 44 is avoided, and the forces between the multiple clamping members 43 or the multiple guide members 44 can be evenly distributed at different positions on the circumference of the tank cover, maintaining the consistency of the correction force or the clamping force in different directions, and achieving the balance of the forces.

[0034] Furthermore, if Figure 3 , Figure 4As shown, the length of the guide member 44 protruding from the end surface of the connecting seat 42 is greater than the protruding length of the clamping member 43. In this way, the guide member 44 can be contacted with the tank cover first when descending, achieving the effect of first correction and then clamping.

[0035] Furthermore, the side of the guide surface 441 close to the connecting seat 42 is located at the same horizontal plane as the end surface of the clamping member 43. In this way, the guide member 44 can be contacted with the can cover first when descending, achieving the effect of first correction and then clamping.

[0036] Furthermore, the guide member 44 is made of stainless steel or aluminum alloy. Titanium alloy is a high-quality material for the guide member 44. Titanium alloy has extremely high strength and toughness, and relatively low density, so it has a good lightweight effect and excellent corrosion resistance. It is understandable that high-strength engineering plastics can also be used as the material of the guide member 44. High-strength engineering plastics are lightweight and durable materials with good corrosion resistance and wear resistance. It can replace metal materials to a certain extent, reduce the weight of the guide member 44, and maintain sufficient strength and stability.

[0037] Furthermore, the guide member 44 and the connecting seat 42 are an integrally formed structure. The integrally formed structure of the guide member 44 and the connecting seat 42 not only improves the stability of the overall structure, but also greatly simplifies the manufacturing and assembly process. Moreover, there is no gap between the integrally formed guide member 44 and the connecting seat 42, thereby eliminating potential problems caused by looseness or misalignment. In addition, the integrally formed structure also has excellent impact and vibration resistance. Even in a harsh working environment, the guide member 44 and the connecting seat 42 can effectively resist external impact and vibration and maintain the integrity and stability of the structure.

[0038] Furthermore, if Figure 3 , Figure 4 As shown, the side of the protruding part of the clamping member 43 near the middle of the connecting seat 42 is provided with an anti-skid pattern 431. The anti-skid pattern 431 can effectively increase the friction between the clamping member 43 and the clamped object, and prevent slipping under vibration or external force. Especially when handling small or smooth objects, the presence of the anti-skid pattern 431 makes the clamping more firm and reliable. In other embodiments, a wear-resistant coating can also be provided on the surface of the clamping member 43, which not only improves the durability of the clamping member 43, but also reduces the noise generated by friction.

[0039] Further, the capping device 1 also includes a pushing mechanism 50, which is connected to the frame 10 and is arranged on the side of the conveyor belt 20 opposite to the capping mechanism 40. The pushing mechanism 50 includes a third driving member 51 and a pushing member 53. One end of the third driving member 51 is connected to the frame 10, and the other end is drivingly connected to the pushing member 53. The third driving member 51 drives the pushing member 53 to reciprocate along the extending direction of the vertical conveyor belt 20. Specifically, the pushing mechanism 50 can push the product after the feeding tank cap on the conveyor belt 20 to the bottom of the capping mechanism 40, so as to realize the connection between different stations. Further, an absorber, such as a suction cup, can be arranged on the pushing member 53, which can absorb the product after the capping is completed from the capping mechanism 40 back to the conveyor belt 20, so that the conveyor belt 20 can transport the product to the receiving tray.

[0040] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should belong to the scope covered by the claims of the utility model.

Claims

1. A capping device, characterized in that: include: frame; A conveyor belt, which is arranged on the frame and is used to transport the can body; A feeding mechanism, which is arranged on the frame and on one side of the conveyor belt, and is used to convey the cover body to the can body; A capping mechanism, wherein the feeding mechanism and the capping mechanism are arranged in parallel along the conveying direction of the conveyor belt, the capping mechanism comprises a main body, a connecting seat, a first driving member, at least two second driving members, at least two clamping members and at least two guide members, the main body is connected to the frame and arranged on one side of the conveyor belt, one end of the first driving member is connected to the main body, and the other end is driven to connect to the connecting seat, the connecting seat is located above the conveyor belt, the first driving member drives the connecting seat to rotate and move in the vertical direction, at least two of the second driving members are arranged in the connecting seat, and the driving end of the second driving member drives The clamping member is dynamically connected to the connecting seat, at least two of the clamping members are extended along the extension direction of the connecting seat and protrude from the end face of the connecting seat, the second driving member drives the clamping member to approach or move away from the connecting seat, at least two of the guide members are connected to the outer peripheral wall of the connecting seat at intervals, and protrude from the end face of the connecting seat along the extension direction of the connecting seat, the midpoint of the line connecting at least two of the guide members and the midpoint of the line connecting at least two clamping members are located on the same straight line, and the surfaces opposite to the protruding parts of the guide members are formed with guide surfaces, and the guide surfaces are inclined along the direction from the end of the guide member to the connecting seat toward the middle of the connecting seat.

2. A capping device according to claim 1, characterized in that: At least two of the clamping members are arranged at intervals, and at least two of the clamping members and at least two of the guide members are arranged in a staggered manner.

3. A capping device according to claim 2, characterized in that: The length of the guide member protruding from the end surface of the connecting seat is greater than the protruding length of the clamping member.

4. A capping device according to claim 3, characterized in that: The side edge of the guide surface close to the connecting seat and the end surface of the clamping member are located in the same horizontal plane.

5. A capping device according to any one of claims 1 to 4, characterized in that: The guide member is made of stainless steel or aluminum alloy.

6. A capping device according to any one of claims 1 to 4, characterized in that: The guide member and the connecting seat are an integrally formed structure.

7. A capping device according to any one of claims 1 to 4, characterized in that: The side surface of the protruding portion of the clamping piece close to the middle portion of the connecting seat is provided with anti-slip grooves.

8. A capping device according to any one of claims 1 to 4, characterized in that: The capping device also includes a pushing mechanism, which is connected to the frame and arranged on a side of the conveyor belt opposite to the capping mechanism. The pushing mechanism includes a third driving member and a pushing member. One end of the third driving member is connected to the frame, and the other end is drivingly connected to the pushing member. The third driving member drives the pushing member to reciprocate along a direction perpendicular to the extension direction of the conveyor belt.

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