A rivet conveyor

Abstract

A rivet conveyor comprises a pressure plate assembly, a first path, a second path and a third path are arranged on the pressure plate assembly, the first path is communicated with the second path and the third path, a top block, the top block is provided with a first layer structure and a second layer structure which are spaced apart by a predetermined distance and face the same direction, the first layer structure and the second layer structure are synchronously moved back and forth in the first path and the third path respectively, the first layer structure applies an action force to an object entering into the first path, the object is moved into the second path after moving a certain distance in the first path, the second layer structure applies another action force to another object entering into the third path from the second path, the other object is moved into a stamping channel from the outlet of the third path after moving a certain distance in the third path. Through the multi-layer structure design, multiple rivets can be synchronously conveyed, and rivet jamming between the multiple rivets can be prevented.

Description

Technical Field

[0001] This invention relates to the field of riveting machine technology, and more specifically to a rivet conveyor. Background Technology

[0002] Riveting is a method of connecting multiple parts by using the axial force of a punch to thicken the rivet shank in the rivet hole and form a rivet head. Most existing rivet conveyors use a single-layer pusher component to push the rivet to the designated riveting position.

[0003] Authorization announcement number CN116475719B discloses a self-piercing riveting punch mechanism, specifically comprising a base 1, a nut feeding mechanism 2, a punching rod 3, and a nut pushing mechanism 4. The base 1 has a nut conveying channel 11 and a through hole 12. The through hole 12 is perpendicular to the nut conveying channel 11 and communicates with it. The nut feeding mechanism 2 is adapted to feed nuts 5 into the nut conveying channel 11. The nut feeding mechanism 2 includes a conveying pipe 21. The conveying pipe 21 allows the nuts 5 to be conveyed sequentially. The output end of the conveying pipe 21 is connected to the base 1 and communicates with the nut conveying channel 11. For example, an opening can be made on the base 1 to connect with the conveying pipe 21, after which the conveying pipe 21 communicates with the nut conveying channel 11. A nut anti-reverse device is provided on the side of the stamping rod 3 and on the nut transfer channel 11 to prevent the nut 5, which is transported to the bottom of the stamping rod 3, from moving toward the push rod 41.

[0004] The aforementioned publicly available document describes a nut backflow prevention device on the base that can solve the nut backflow problem. However, this single-layer base structure can only feed one nut at a time through the backflow prevention bar. If multiple nuts pass through the bar simultaneously, the bar will remain open, thus losing its backflow prevention function. Furthermore, multiple nuts entering the feeding mechanism at the same time can easily cause blockages. Therefore, this structure, which can only feed one nut at a time, significantly reduces work efficiency. Thus, it is necessary to design a multi-layer feeding structure. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a multi-layer rivet conveyor that can store multiple rivets at the same time and convey the rivets to the stamping channel in sequence.

[0006] To achieve the above objectives, the technical solution of the present invention is: a rivet conveyor, a pressure plate assembly, wherein the pressure plate assembly is provided with a first path, a second path, and a third path, the first path being connected to the third path via the second path; a top block, the top block comprising a first layer structure and a second layer structure spaced at a predetermined distance and facing the same direction, the first layer structure and the second layer structure synchronously reciprocating in the first path and the third path respectively; the first layer structure applies a first force to a first object entering the first path, the first object moving a certain distance in the first path and then moving into the second path; the second layer structure applies a second force to a second object entering the third path from the second path, the second object moving a certain distance in the third path and then moving from the third path into a stamping channel. Through the synchronous movement of the first layer structure and the second layer structure, objects in the first path and the third path can be pushed simultaneously, ultimately completing the conveying of the object.

[0007] Furthermore, it also includes a push rod; the interior of the second layer structure is a hollow structure, and the push rod is disposed in the hollow structure; when the second object has not moved into the stamping channel, the push rod extends from the hollow structure and moves the second object from the third path into the stamping channel. Through the above technical solution, it is possible to avoid situations where the length of the second layer structure is insufficient to push the object to the designated position, allowing the push rod to extend from the second layer structure and push the object to the designated position.

[0008] Furthermore, it also includes a fixing base; the fixing base is provided with a nail feeding path, and the nail feeding path is connected to the first path.

[0009] Furthermore, it also includes an elastic limiting structure, which is disposed in the nail feeding path and / or the second path. This technical solution prevents the object from flowing back.

[0010] Furthermore, it also includes a magnetic attraction structure, which is disposed at the first object movement starting point position of the first path and / or at the second object movement starting point position of the third path. This technical solution further prevents object backflow.

[0011] Furthermore, one end of the second path is connected to the endpoint of the first object movement in the first path, and the other end of the second path is connected to the starting point of the second object movement in the third path. The length of the second path is approximately the same as the distance between the first layer structure and the second layer structure.

[0012] Furthermore, the first path and the third path are staggered vertically.

[0013] Furthermore, the first path and the third path are offset left and right.

[0014] Furthermore, it also includes a driving structure. After an object moves a certain distance in the first path, the driving structure applies a third force to the object, causing the object to move into the second path. Through the above technical solution, it can be guaranteed that the object can definitely move from the first path to the second path.

[0015] Furthermore, the top block also includes a fixing block, with one end of the first layer structure and one end of the second layer structure disposed on the fixing block.

[0016] Furthermore, the length of the first layer structure is less than the length of the second layer structure. Through the above technical solution, when the first layer structure pushes the object to the second path, the second layer mechanism can block the exit of the second path, thereby temporarily storing the object in the second path.

[0017] Furthermore, it also includes a top block cylinder and a top rod cylinder. The top block cylinder is mounted on the pressure plate assembly, and the driving end of the top block cylinder is connected to the top block. The top rod cylinder is mounted on the fixed block, and the driving end of the top rod cylinder is connected to the top rod.

[0018] Furthermore, a limiting structure is provided at the end of the first layer structure, and the object is placed in the limiting structure. Under the force applied by the first layer structure, the limiting structure moves the object from the starting position of the first object movement along the first path to the ending position of the object movement.

[0019] Furthermore, the limiting structure includes a front limiting member and a limiting connector. The front limiting member is connected to the end of the first layer structure via the limiting connector. The front limiting member, the limiting connector, and the end of the first layer structure form a limiting space, in which the object is disposed. This technical solution reduces the likelihood of the object flipping or getting stuck due to friction with the first path during movement.

[0020] Furthermore, an alignment space is provided on one side of the object's movement endpoint in the first path, and the width of the alignment space is approximately the same as the width of the front limiting member. Through the above technical solution, the first-layer structure can accurately push the object from the first path to the second path.

[0021] The beneficial effects of the present invention are as follows: a first path, a second path, and a third path are arranged sequentially on the pressure plate assembly, and the top block is designed as a multi-layer structure. This multi-layer structure moves back and forth in the first path and the third path, so that the first object and the second object can move simultaneously in the first path and the third path. The first object needs to pass through the second path to enter the third path. Before the first object enters the third path, the second path is used to temporarily store the first object, thereby avoiding collisions between adjacent first and second objects and causing blockages. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of the decomposed structure;

[0024] Figure 3 yes Figure 1 Cross-sectional view of the lower and middle structure;

[0025] Figure 4 yes Figure 3 A cross-sectional view of the first object when it is located at the starting point of the first object's movement.

[0026] Figure 5 yes Figure 3 A cross-sectional view of the first object located in the second path;

[0027] Figure 6 yes Figure 1 Exploded view of the intermediate pressure plate assembly;

[0028] Figure 7 yes Figure 1 A schematic diagram of the three-dimensional structure of the central top block;

[0029] Figure 8 yes Figure 1 A schematic diagram of the connection structure between the middle and top blocks of the cylinder.

[0030] Figure Labels

[0031] 100. Rivet conveyor; 200. First item; 300. Second item; 400. Third item;

[0032] 1. Pressure plate assembly; 11. First path; 111. Starting point of first object movement; 112. Ending point of first object movement; 113. Alignment space; 12. Second path; 13. Third path; 131. Exit of third path; 132. Starting point of second object movement; 133. Ending point of second object movement; 14. First pressure plate; 141. First upper protrusion; 1411. First partition space; 142. First lower protrusion; 143. First top protrusion; 15. Second pressure plate; 151. Second upper protrusion; 1511. Second partition space; 152. Second lower protrusion; 16. Third pressure plate; 17. Fourth pressure plate; 171. Clamping space; 18. Pressure plate connector;

[0033] 2. Top block; 21. First layer structure; 22. Second layer structure; 23. Fixing block; 24. Limiting structure; 241. Front limiting component; 242. Limiting connector; 25. Limiting space; 26. Top block cylinder; 261. Snap-fit ​​component; 27. Snap-fit ​​groove;

[0034] 3. Push rod; 31. Push rod cylinder; 32. Push rod connecting plate; 33. Stabilizer bar;

[0035] 4. Fixing base; 41. Fixing base cover plate; 42. Mounting groove; 43. Nail feeding path; 44. Nail feeding tube; 45. Locking cap; 46. Locking ring;

[0036] 51. Drive structure; 52. Elastic limiting structure; 53. Accommodation space; 54. Magnetic suction structure; 55. Fixing plate; 56. Mounting component; 57. Guide block. Detailed Implementation

[0037] The invention will be further described below with reference to the accompanying drawings and specific embodiments. The following description is merely exemplary and does not limit the scope of protection of the invention.

[0038] like Figures 1-8 The diagram shows a rivet conveyor 100, which includes a pressure plate assembly 1. The pressure plate assembly 1 is provided with a first path 11, a second path 12 and a third path 13. The first path 11 is connected to the third path 13 through the second path 12.

[0039] It also includes a top block 2, which has a first layer structure 21 and a second layer structure 22 spaced apart by a predetermined distance and facing the same direction. The first layer structure 21 and the second layer structure 22 can move synchronously back and forth in the first path 11 and the third path 13, respectively. The first layer structure 21 applies a first force to the first object 200 entering the first path 11. After moving a certain distance in the first path 11, the first object 200 moves to the second path 12. At the same time, the second layer structure 22 applies a second force to the second object 300 entering the third path 13 from the second path 12. After moving a certain distance in the third path 13, the second object 300 moves from the third path 13 to the stamping channel (not shown in the figure), specifically from the third path exit 131 of the third path 13 to the stamping channel.

[0040] It should be noted that the first path 11, the second path 12, and the third path 13 can be channels, grooves, or other conveying structures that can transport the first object 200 and the second object 300. The present invention is not limited thereto.

[0041] In this embodiment, on the vertical projection plane, the projection of the first path 11 is located above the projection of the third path 13 and is offset from it. Specifically, the first path 11 and the third path 13 are arranged parallel to each other vertically and offset from each other. The second path 12 is arranged between the first path 11 and the third path 13, preferably vertically between them, or it can be arranged at an angle between them. The cross-sectional dimension of the first layer structure 21 is less than or equal to the cross-sectional dimension of the first path 11, and the cross-sectional dimension of the second layer structure 22 is less than or equal to the cross-sectional dimension of the third path 13. The predetermined distance between the first layer structure 21 and the second layer structure 22 is the same as the interval between the first path 11 and the third path 13. The advantage of this design is that the first layer structure 21 and the second layer structure 22 can move back and forth smoothly and synchronously within the first path 11 and the third path 13, respectively, without obstruction. It should be noted that the cross-sections of the second path 12 and the third path 13 can be cylindrical, elliptical, square or other shapes, and users can choose according to their needs. This invention is not limited to these shapes.

[0042] Specifically, a starting point position 111 and a ending point position 112 for the first object are set on the first path 11. The starting point position 111 is set on the first path 11 and is the first position where the first object stops when it enters the first path 11. The ending point position 112 is a specific position on the first path 11 that is on the same vertical plane as the second path 12.

[0043] A second object movement starting point position 132 and a second object movement ending point position 133 are provided on the third path 13. Specifically, the second object movement starting point position 132 is a specific position located on the third path 13 and on the same vertical plane as the second path 12, and the second object movement ending point position 133 is a specific position located on the third path 13 and at a predetermined distance from the exit 131 of the third path. One end of the second path 12 is connected to the first object movement ending point position 112 of the first path 11, and the other end of the second path 12 is connected to the second object movement starting point position 132 of the third path 13, that is, the first object movement ending point position 112, the second path 12, and the second object movement starting point position 132 are on the same vertical plane. The length of the second path 12 is basically the same as the interval distance between the first layer structure 21 and the second layer structure 22.

[0044] According to the above, the complete movement process of a first object 200 is as follows: the first object moves from the starting position 111, the first object moves to the ending position 112, the second path 12, the second object moves from the starting position 132, and finally the first object 200 is pushed to the second object moves to the ending position 133.

[0045] Preferably, the height of the third path 13 is approximately 1.03 times the height of the first object 200, and the width of the second path 12 is approximately 1.10 times the width of the first object 200. This is merely an example, and the embodiment is not limited thereto. This relatively small height and width difference ensures that the first object 200 does not have excessive room to rotate in the third path 13 and the second path 12, thereby reducing the likelihood of the first object 200 flipping or getting stuck when moving in the third path and the second path 12.

[0046] Please refer to the reference. Figure 6 In this embodiment, the pressure plate assembly 1 includes a first pressure plate 14, a second pressure plate 15, a third pressure plate 16 and a fourth pressure plate 17, with the first pressure plate 14 and the second pressure plate 15 connected on opposite sides.

[0047] Specifically, a first upper protrusion 141 and a first lower protrusion 142 are provided on the first pressure plate 14 at a predetermined distance. The first lower protrusion 142 is located below the first upper protrusion 141, and the length of the first lower protrusion 142 is substantially the same as the length of the first upper protrusion 141. A second upper protrusion 151 and a second lower protrusion 152 are provided on the second pressure plate 15 at a predetermined distance. The second lower protrusion 152 is located below the second upper protrusion 151, and the length of the second lower protrusion 152 is substantially the same as the length of the second upper protrusion 151. Furthermore, the shape and size of the first upper protrusion 141 are substantially the same as the shape and size of the second upper protrusion 151, and the shape and size of the first lower protrusion 142 are substantially the same as the shape and size of the second lower protrusion 152.

[0048] Specifically, the first upper protrusion 141 is recessed to form a first partition space 1411, and the second upper protrusion 151 is recessed to form a second partition space 1511. The first upper protrusion 141 and the second upper protrusion 151 are symmetrically arranged (the first partition space 1411 is also symmetrical to the second partition space 1511), and the first lower protrusion 142 and the second lower protrusion 152 are symmetrically arranged. When the first upper protrusion 141 and the second upper protrusion 151 abut, and when the first lower protrusion 142 and the second lower protrusion 152 abut, they together form a third path arranged in a channel shape. At the same time, the first partition space 1411 and the second partition space 1511 abut together to form a second path 12 arranged in a channel shape.

[0049] More specifically, a first top surface protrusion 143 is provided on the top surface of the first pressure plate 14, which is perpendicular to the first upper protrusion 141. The third pressure plate 16 and the fourth pressure plate 17 are connected by a pressure plate connector 18. When the third pressure plate 16 and the fourth pressure plate 17 are connected, the first pressure plate 14 and the second pressure plate 15 are sandwiched in the middle, and the first top surface protrusion 143, the first upper protrusion 141 and the second upper protrusion 151 are combined to form a groove-shaped groove, which is parallel to the first path 11 of the third path 13.

[0050] Setting the pressure plate assembly 1 to a detachable installation method makes subsequent maintenance of the rivet conveyor 100 more convenient. Furthermore, the front end of the third pressure plate 16 (the end near the third path outlet 131) is arc-shaped, and the fourth pressure plate 17 is arc-shaped as a whole, so that when the third pressure plate 16 and the fourth pressure plate 17 abut, the two arc-shaped surfaces abut to form a clamping space 171, which can be used to clamp the rivet conveyor 100 onto the punch ejector (not shown in the figure).

[0051] In this embodiment, the top block 2 also includes a fixing block 23 (see [link to documentation]). Figure 7One end of the first layer structure 21 and one end of the second layer structure 22 are both set on the first end of the fixing block 23, and the first layer structure 21, the fixing block 23 and the second layer structure 22 are arranged in a U-shape, wherein the length of the first layer structure 21 is less than the length of the second layer structure 22.

[0052] Specifically, such as Figure 3 As shown, in the vertical plane, the difference between the length of the first layer structure 21 and the length of the second layer structure 22 is set as Y, and the width of the second path 12 is set as X. Then X is less than Y, so as to ensure that when the first layer structure 21 pushes the first object 200 in the first path 11 to the first object's movement endpoint position 112 and enters the second path 12, the second layer structure 22 is located at the exit of the second path 12. The second layer structure 22 blocks the exit of the second path 12, and the first object 200 is placed on the second layer structure 22, that is, the first object 200 can be temporarily stored in the second path 12.

[0053] Furthermore, a limiting structure 24 is provided at the other end of the first layer structure 21. The first object 200 falls into the limiting structure 24. Under the first force, the first object 200 located in the limiting structure 24 moves from the starting position 111 of the first object movement on the first path 11 to the ending position 112 of the first object movement.

[0054] Specifically, the limiting structure 24 includes a front limiting member 241 and a limiting connector 242 (see [link]). Figure 7 As shown, the front limiting member 241 is connected to the end of the first layer structure 21 via the limiting connector 242. A limiting space 25 is formed between the front limiting member 241, the limiting connector 242, and the end of the first layer structure 21. The cross-section of the limiting space 25 can be cylindrical, elliptical, square, or other shapes. The accommodating size of the limiting space 25 is basically consistent with the size of the first object 200 to ensure that the first object 200 does not have too much space to move within the limiting space 25. This further reduces the probability of the first object 200 rubbing against the edge of the first path 11 and causing it to flip over when pushed by the first layer structure 21.

[0055] When working, after the first object 200 enters the first path 11, it will fall into the limiting space 25. Under the force applied by the first layer structure 21, the limiting structure 24 is equivalent to being able to move the first object 200 from the starting position 111 to the ending position 112 in a clamping manner.

[0056] Furthermore, in order to ensure that the limiting space 25 can accurately move to the first object's moving endpoint position 112, an alignment space 113 is provided on one side of the first object's moving endpoint position 112 in the first path 11. The width of the alignment space 113 is the same as the width of the front limiting member 241. When the first layer structure 21 moves the first object 200 in the first path 11, and the front limiting member 241 can just completely overlap with the alignment space 113, the limiting space 25 can accurately reach the first object's moving endpoint position 112. That is, at this time, the limiting space 25 can be completely connected with the opening of the first path 11, thereby facilitating the first object 200 to enter the second path 12 from the limiting space 25. It should be noted that the size of the limiting space 25 is basically the same as the size of the second path 12.

[0057] In this embodiment, the rivet feeder 100 also includes a push rod 3 (see [link to previous embodiment]). Figure 3 , 4 As shown in Figure 8, the interior of the second layer structure 22 is a hollow structure (not shown in the figure), and the push rod 3 is located in the hollow structure. When the second object 300 moves to the second object movement endpoint position 133 in the third path 13, due to the certain distance from the third path exit 131, the second object 300 cannot enter the stamping channel. At this time, the push rod 3 can extend from the hollow structure of the second layer structure 22 and move the second object 300 from the second object movement endpoint position 133 towards the third path exit 131 until the second object 300 moves into the stamping channel. That is to say, when the length of the second layer structure 22 is insufficient to push the first object 200 into the stamping channel (the movement distance of the second layer structure 22 is less than the length of the third path 13), the push rod 3 extends from the interior of the second layer structure 22 and pushes the first object 200 from the second object movement endpoint position 133 into the stamping channel.

[0058] In this embodiment, the first object 200 and the second object 300 can be rivets or screws or other riveting components. Users can choose the specific structure of the first object 200 and the second object 300 as needed, and the present invention is not limited thereto.

[0059] The first object 200 and the second object 300 have the same structure and are both made of metal. The structure of the first object 200 will be described below using it as an example. When viewed in a vertical cross-section, the dimensions at both ends of the first object 200 are larger than its central dimension. That is, the central part of the first object 200 is concave (arc-shaped), and its dimensions gradually decrease from its upper end to its central part (smooth), while its dimensions gradually increase from its central part to its lower end (smooth). Therefore, in this embodiment, the pusher of the push rod 3 has a concave arc-shaped surface. When the push rod 3 pushes the second object 300, this arc-shaped surface fits tightly against the central part of the second object 300, allowing for better pushing of the second object 300 and reducing the likelihood of the second object 300 flipping or getting stuck due to friction with the third path 13 during the pushing process. It should be noted that, in addition to the structure described above, the head shape of the push rod 3 can also be a flat or curved surface. The above is just an example, and the present invention is not limited thereto.

[0060] In this embodiment, the rivet conveyor 100 further includes a top block cylinder 26 and a top rod cylinder 31 for driving the top block 2 and the top rod 3 to move. The top block cylinder 26 is disposed on the outer wall of the first pressure plate 14, and its driving end is connected to the fixed block 23. The specific connection method is as follows: the driving end of the top block cylinder 26 is provided with a vertically oriented "I"-shaped snap-fit ​​component 261, i.e., the snap-fit ​​component 261 has a structure with larger dimensions at both ends and a smaller dimension in the middle. The fixed block 23 is provided with a slot 27 that matches the "I"-shaped snap-fit ​​component 261. The "I"-shaped snap-fit ​​component 261 is snapped into the slot 27, with the middle portion of the snap-fit ​​component 261 located in the slot 27 and the two ends of the snap-fit ​​component 261 located at the two ends of the slot 27. This allows the snap-fit ​​component 261 to be detachably connected to the fixed block 23, thus enabling the top block 2 to move back and forth via the top block cylinder 26.

[0061] Please see Figure 3 , 45. 8. The push rod cylinder 31 is embedded in the countersunk hole on the other end face of the fixed block 23. The driving end of the push rod cylinder 31 extends out of the fixed block 23 and is connected to the push rod 3 via a push rod connecting plate 32. To enable the push rod cylinder 31 to drive the push rod 3 to reciprocate in the second layer structure 22 more stably, a second countersunk hole is provided on the fixed block 23. A stabilizing rod 33 is installed in this second countersunk hole. One end of the stabilizing rod 33 is fixed to the push rod connecting plate 32, and the diameter of the other end of the stabilizing rod 33 matches the diameter of the countersunk hole. The stabilizing rod 33 can move in the second countersunk hole under the drive of the push rod cylinder 31. Specifically, the stabilizing rod 33 and the push rod 3 are symmetrically arranged relative to the driving end of the push rod cylinder 31. When the push rod cylinder 31 is working, the stabilizing rod 33 and the push rod 3 move synchronously back and forth.

[0062] Please see Figure 1-5 In this embodiment, the rivet conveyor 100 further includes a fixing seat 4 and a fixing seat cover plate 41 disposed on the side of the fixing seat 4. The bottom of the fixing seat 4 is recessed to form a mounting groove 42, the length direction of which is consistent with the movement direction of the first object 200 in the first path 11. The size of the mounting groove 42 matches the size of the top of the third pressure plate 16. By engaging the mounting groove 42 with the top of the third pressure plate 16 and abutting the fixing seat cover plate 41 against the first top surface protrusion, the fixing seat 4 can be fixedly disposed on the top surface of the pressure plate assembly 1.

[0063] Under the action of the above structure, the fixing seat 4, fixing seat cover 41, first top surface protrusion 143, first upper layer protrusion 141, second upper layer protrusion 151, and third pressure plate 16 together form a channel-shaped first path 11 (equivalent to the first path 11 changing from the original groove shape to a channel shape after the fixing seat 4 and fixing seat cover 41 are set on the pressure plate assembly 1). Compared with the groove-shaped first path 11, the channel-shaped first path 11 can make the movement direction of the first object 200 when the first layer structure 21 moves more accurately, and avoid the first object 200 deviating from the original movement path.

[0064] Please see Figure 3-5 In this embodiment, the fixing base 4 is provided with a nail feeding path 43, which is connected to the first path 11. In the initial state, when the first object 200 moves from the nail feeding path 43 to the first path 11, one end opening of the limiting space 25 of the first layer structure 21 is exactly connected to the nail feeding path 43 (that is, ensuring that the first object 200 can fall into the limiting space 25). Specifically, in this embodiment, the nail feeding path 43 is formed by the fixing base 4 and the fixing base cover plate 41.

[0065] It should be noted that the rivet conveyor 100 also involves a third object 400 in the actual operation process. The third object 400 is no different in shape and size from the second object 300 or the first object 200.

[0066] The rivet feeder 100 also includes a rivet feeding tube 44 and a locking cap 45. The rivet feeding tube 44 passes through the locking cap 45 and extends into the interior of the fixed base 4, communicating with the rivet feeding path 43. The locking cap 45 is mounted on the fixed base 4, and the locking ring 46 inside the locking cap 45 can press the rivet feeding tube 44 against it. Of course, the locking cap 45 and the locking ring 46 can also be used to tighten the rivet feeding tube 44 by means of buckles, expansion sleeves, etc., and are not limited to these. Specifically, the rivet feeding tube 44 uses air supply to feed the third object 400 into the rivet feeding path 43.

[0067] It should be noted that the first object 200, the second object 300, and the third object 400 are not different; they are simply used to better distinguish the objects (here, "objects" refers to the first object 200, the second object 300, and the third object 400 collectively) as they move in different positions, thus facilitating better explanation. Specifically, the object within the distance from the nail feeding tube 44 to the nail feeding path 43 is represented by the third object 400. The object within the distance from the nail feeding path 43 to the second path 12 is represented by the first object 200, and the object within the distance from the second path 12 to the exit point 131 of the third path is represented by the second object 300.

[0068] The third object 400 falls into the limiting space 25 of the first layer structure 21. The first layer structure 21 pushes the first object 200 (here, the first object 200 is the third object 400 that entered the first path 11 from the first object's starting position 111 to the first object's ending position 112. Then, the first layer structure 21 of the top block 2 will block the feeding path 43, and at the same time, the second layer structure 22 of the top block 2 will block the exit of the second path 12. At this time, the third object 400 (the third object 400 appears again because the feeding tube 44 feeds another object into the feeding path 43, and this object is the third object 400) will be temporarily stored in the feeding path 43, and the first object 200 will be temporarily stored in the second path 12, waiting for the next operation.

[0069] Preferably, the rivet conveyor 100 further includes a drive structure 51, which, like the rivet feeding path 43, is composed of a fixed base 4 and a fixed base cover plate 41. After the first object 200 moves from the starting position 111 to the ending position 112, the drive structure 51 applies a third force to the first object 200, pushing it into the second path 12.

[0070] In this embodiment, the driving structure 51 is disposed inside the fixed base 4. Specifically, the driving structure 51 is a gas flow channel. The air inlet of the gas flow channel is connected to the nail feeding tube 44, thereby enabling the supply of gas. The air outlet of the gas flow channel is connected to the first path 11, and the air outlet of the gas flow channel, the first object movement endpoint position 112, and the second path 12 are all located on the same vertical plane and connected. When the first layer structure 21 pushes the first object 200 to the entrance of the second path 12 (i.e., the first object movement endpoint position 112), and because the limiting space 25 drives the first object 200 to move in a clamping manner, under this premise, in order to ensure that the first object 200 can definitely get rid of the clamping of the limiting space 25 and enter the second path 12, the driving structure 51 sprays gas (third force) to push the first object 200 into the second path 12. Of course, the drive structure 51 may not be composed of the fixed seat 4 and the fixed seat cover 41. The drive structure 51 may also be located externally and the air outlet is connected to the first path 11.

[0071] Preferably, on the one hand, since this embodiment uses air compression to transport the first object 200 from the feed tube 44 to the pressure plate assembly 1, this air compression will cause airflow in the feed path 43, the first path 11, the second path 12, and the third path 13 inside the rivet conveyor 100, which may cause the object to flow back. On the other hand, when the angle at which the rivet conveyor 100 is positioned causes the intended direction of movement of the object to be inconsistent with the actual direction of movement of the object, the object will also flow back.

[0072] To prevent the third object 400 and the first object 200, which are temporarily stored in the rivet feeding path and the second path 12, from flowing back, the rivet conveyor 100 also includes an elastic limiting structure 52, which is disposed in the rivet feeding path 43 and the second path 12 to lock the third object 400 and the first object 200 in the rivet feeding path 43 and the second path 12 respectively.

[0073] Specifically, to better fit the central shape of the first object 200 (and the third object 400) (larger dimensions at both ends and smaller dimensions in the middle), the vertical cross-section of the head of the elastic limiting structure 52 is triangular, and the tail of the elastic limiting structure 52 is provided with a countersunk hole that abuts against one end of the spring. Receiving spaces 53 for accommodating the elastic limiting structure 52 are provided in both the feeding path 43 and the second path 12. The tail of the elastic limiting structure 52 is entirely placed in the receiving space 53, and the other end of the spring abuts against the receiving space 53. The head of the elastic limiting structure 52 extends from the receiving space 53, and the inclined surface of the head faces the entrance of the feeding path 43 and the second path 12 to lock the corresponding third object 400 and first object 200. Only when the third object 400 and the first object 200 are subjected to sufficiently large forces can the third object 400 and the first object 200 respectively squeeze the head of the elastic limiting structure 52, causing the spring at the tail of the elastic limiting structure 52 to compress, thereby breaking free from the obstruction of the elastic limiting structure 52 and entering the first path 11 and the third path 13 respectively.

[0074] It should be noted that, in this embodiment, the aforementioned sufficiently large force can specifically be the force exerted on the first object 200 by the gas ejected from the nail feeding tube 44 and the driving structure 51. In this case, the nail feeding tube 44 and the driving structure 51 each need to eject gas four times to act on the first object 200.

[0075] Specifically, the first gas ejection from the feeding tube 44 occurs after the third object 400 enters the feeding path 43 from the feeding tube 44, with the purpose of engaging the third object 400 into the elastic limiting structure 52. The second gas ejection aims to free the third object from the elastic limiting structure 52 and into the limiting space 25. The third gas ejection occurs when the first object 200 is pushed to the first object's movement endpoint position 112 by the first layer structure 21. The gas ejects from the feeding tube 44 along the drive structure 51, acting on the first object 200, with the purpose of transporting the first object 200 from the limiting space 25 into the second path and engaging it into the elastic limiting structure 52. The fourth gas ejection aims to allow the gas to act on the first object 200 again along the drive structure 51, freeing the first object 200 from the limiting structure 6 and pushing it into the third path 13.

[0076] Preferably, after the first object 200 and the second object 300 enter the first path 11 and the third path 13 respectively, they may also flow backward (for the same reasons as described above). Therefore, in this embodiment, magnetic attraction structures 54 are provided in both the first path 11 and the third path 13. Specifically, the first magnetic attraction structure 54 is located on the same vertical plane as the nail feeding path 43, and the second magnetic attraction structure 54 is located on the same vertical plane as the second path 12. When the first object 200 and the second object 300 break free from the obstruction of the elastic limiting structure 52 and enter the first path 11 and the third path 13 respectively, the two magnetic attraction structures 54 will attract the two first objects 200 respectively to prevent them from flowing backward. In this embodiment, the magnetic attraction structure 54 is set as a magnet.

[0077] In this embodiment, in order to better protect the position of the rivet feeding tube 44 and the fixed rivet conveyor 100, the rivet conveyor 100 also includes a fixing plate 55, a mounting member 56 and a guide block 57.

[0078] The aforementioned fixing plates 55 are installed on the symmetrical outer walls of the fixing base 4. The two fixing plates 55 are connected to each other, and the entire rivet feeding tube 44 is located between the two fixing plates 55 to achieve a protective effect. The front end and rear end of the fixing plates 55 are set at an angle; specifically, the rear end of the fixing plates 55 is set vertically. A mounting member 56 is provided at the rear end of the fixing plates 55, through which the fixing plates 55 can be installed in the required position. Specifically, in practical applications, a guide shaft (not shown) should pass through the mounting member 56 so that the entire rivet feeder 100 can always move in the opposite direction along the length of the guide shaft during movement, avoiding severe shaking.

[0079] Preferably, guide blocks 57 are provided opposite to each other at the connection between the front and rear ends of the two fixing plates 55. These guide blocks 57 have guide grooves (not shown in the figure) whose dimensions match the dimensions of the rivet feeding tube 44. When the two fixing plates 55 abut, the two guide grooves simultaneously fit the rivet feeding tube 44, thus setting the rivet feeding tube 44 to a structure substantially identical to that of the fixing plates 55 (i.e., the front and rear ends are angled). Specifically, in this embodiment, the angle between the front and rear ends of the guide groove in the guide block 57 is set at 150 degrees, thereby changing the turning radius of the rivet feeding tube 44. Of course, the angle is not limited to the aforementioned 150 degrees; other angles can also be used. Specifically, guide blocks 57 with different front and rear angles can be selected according to the required placement position of the entire rivet conveyor 100 to adjust the turning radius of the rivet feeding tube 44.

[0080] The working principle of this invention is described below to help you better understand it:

[0081] In the first step, the third object 400 is conveyed from the nail feeding tube 44 to the nail feeding path 43, and under the air jet of the nail feeding tube 44, the elastic limiting structure 52 holds the third object 400 in place.

[0082] In the second step, the nail feeding tube 44 sprays air again, causing the third object 400 to break free from the elastic limiting structure 52 and move towards the first path 11, and fall into the limiting space 25 of the first layer structure 21 of the top block 2 (at this time, the third object 400 transforms into the first object 200).

[0083] Thirdly, under the action of the top block cylinder 26, the first layer structure 21 of the top block 2 moves the first object 200 until the front limiting member 241 of the limiting structure 24 of the first layer structure 21 completely overlaps with the alignment space 113, that is, the limiting space 25 completely overlaps with the end point position 112 of the first object's movement. At this time, the gas flow channel sprays gas to transport the first object 200 to the second path 12. Under the obstruction of the elastic limiting structure 52 and the support of the second layer structure 22, the first object 200 is temporarily stored in the second path 12. At the same time, the third object 400 is transported again from the nail feeding tube 44 to the nail feeding path 43 and is stuck by the elastic limiting structure 52 (consistent with step one).

[0084] In the fourth step, the top block 2 retracts, and the limiting space 25 of the first layer structure 21 is connected to the nail feeding path 43 again. The third object 400 moves into the limiting space 25 of the first layer structure 21 (transforming into the first object 200). The retraction of the second layer structure 22 causes the first object 200, which is temporarily stored in the second path 12, to lose its support force. Under the action of the driving structure 51, it gets rid of the elastic limiting structure 52 and moves to the second object moving starting point position 132 in the third path 13.

[0085] In the fifth step, the top block cylinder 26 and the top rod cylinder 31 work simultaneously. The second layer structure 22 and the top rod 3 located inside the second layer structure 22 cooperate to first transport the second object 300 from the starting position 132 of the second object movement to the stamping channel. At the same time, the first layer structure 21 drives the first object 200 to the ending position 112 of the first object movement. Under the action of the drive structure 51, the first object 200 enters the second path 12 and is locked by the elastic limiting structure 52. And the third object 400 enters the nail feeding path 43 from the nail feeding tube 44 and is locked by the elastic limiting structure 52.

[0086] Repeating the above five steps will complete the transport of multiple first objects 200.

[0087] The above description explains how, on the vertical projection plane, the projection of the first path 11 is located above the projection of the third path 13 and is offset from it. Another embodiment of the invention shows that, on the horizontal projection plane, the projection of the first path 11 is located to one side of the projection of the third path 13 and is offset from it. The difference between the two embodiments lies in the arrangement of the first path 11 and the third path 13: one is vertically offset on the vertical projection plane, and the other is horizontally offset on the horizontal projection plane. The other working principles, technical features, and technical effects are completely the same. Therefore, the embodiment of "horizontally offset on the horizontal projection plane" will not be described in detail here; please refer to the above description for further details.

[0088] The present invention provides a first path 11, a second path 12, and a third path 13 that are connected in sequence on the pressure plate assembly 1, and designs the top block 2 as a multi-layer structure. This multi-layer structure moves back and forth in the first path 11 and the third path 13, so that the first object 200 and the second object 300 can move simultaneously in the first path 11 and the third path 13. The first object 200 needs to pass through the second path 12 to enter the third path 13. Before the first object 200 enters the third path 13, the second path 12 is used to temporarily store the first object 200, thereby avoiding collisions and blockages between adjacent first objects 200 and second objects 300.

[0089] This invention is not limited to the above-described embodiments. If any modifications or variations to this invention do not depart from the spirit and scope of this invention, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this invention, then this invention also intends to include such modifications and variations.

Claims

1. A rivet conveyor, characterized in that, include: A pressure plate assembly, wherein a first path, a second path and a third path are provided on the pressure plate assembly, and the first path is connected to the third path through the second path; The top block includes a first layer structure and a second layer structure that are spaced apart by a predetermined distance and face the same direction. The first layer structure and the second layer structure move synchronously back and forth in the first path and the third path, respectively. The first layer structure applies a first force to the first object that enters the first path. After moving a certain distance in the first path, the first object moves into the second path. The second layer structure applies a second force to the second object that enters the third path from the second path. After the second object moves a certain distance in the third path, it moves from the third path into the stamping channel. The push rod is located inside the hollow structure of the second layer structure. When the second object has not moved into the stamping channel, the push rod extends out from the hollow structure and moves the second object from the third path into the stamping channel. An elastic limiting structure is disposed in the second path.

2. The rivet conveyor according to claim 1, characterized in that: It also includes a mounting base; The mounting base is provided with a nail feeding path, which is connected to the first path.

3. The rivet conveyor according to claim 2, characterized in that: The elastic limiting structure is also provided in the nail feeding path.

4. The rivet conveyor according to claim 2, characterized in that: It also includes a magnetic attraction structure, which is disposed at the first object movement starting point position of the first path and / or disposed at the second object movement starting point position of the third path.

5. The rivet conveyor according to claim 1 or 2, characterized in that: One end of the second path is connected to the end point of the first object movement in the first path, and the other end of the second path is connected to the starting point of the second object movement in the third path. The length of the second path is basically the same as the distance between the first layer structure and the second layer structure.

6. The rivet conveyor according to claim 5, characterized in that: On the vertical projection plane, the projection of the first path is located above the projection of the third path, and they are offset from each other.

7. The rivet conveyor according to claim 5, characterized in that: On the horizontal projection plane, the projection of the first path is located on one side of the projection of the third path, and they are offset from each other.

8. The rivet conveyor according to claim 1 or 2, characterized in that: It also includes a driving structure, which applies a third force to the first object after the first object has moved a certain distance in the first path, and the first object moves into the second path.

9. The rivet conveyor according to claim 1, characterized in that: The top block also includes a fixing block, with one end of the first layer structure and one end of the second layer structure disposed on the fixing block.

10. The rivet conveyor according to claim 9, characterized in that: The length of the first layer structure is less than or equal to the length of the second layer structure.

11. The rivet conveyor according to claim 9, characterized in that: It also includes cylinders with push blocks and cylinders with push rods; The top block cylinder is mounted on the pressure plate assembly, and the drive end of the top block cylinder is connected to the top block. The push rod cylinder is mounted on the fixed block, and the drive end of the push rod cylinder is connected to the push rod.

12. The rivet conveyor according to claim 1 or 2, characterized in that: A limiting structure is provided at the other end of the first layer structure. The first object located in the limiting structure moves from the starting position of the first object movement on the first path to the ending position of the first object movement under the first force.

13. The rivet conveyor according to claim 12, characterized in that: The limiting structure includes a front limiting member and a limiting connector. The front limiting member is connected to the end of the first layer structure through the limiting connector. The front limiting member, the limiting connector, and the end of the first layer structure form a limiting space, and the first object is disposed in the limiting space.

14. The rivet conveyor according to claim 13, characterized in that: An alignment space is provided on one side of the endpoint of the first object movement along the first path, and the width of the alignment space is approximately the same as the thickness of the front limiting member.

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