A multi-station automatic alternate nail pressing device for printer metal parts

Abstract

This invention discloses a multi-station automatic alternating riveting device for metal parts in a printer, comprising: a product positioning fixture for placing the product to be riveted and the rivets; a loading and unloading mechanism including a conveyor rail, a first loading push cylinder, and a fixture push assembly, wherein the product positioning fixture is placed in the conveyor rail, and the conveyor rail is provided with a product unloading station, a product placement station, and a fixture loading station arranged sequentially in a straight line; a first notch corresponding to the position of the product unloading station is provided on the side wall of the conveyor rail, and a second notch corresponding to the position of the position of the fixture loading station is also provided on the side wall of the conveyor rail; a rivet riveting mechanism; and a picking mechanism for picking up the riveted product to be riveted from the product positioning fixture. Compared with the prior art, this invention effectively simplifies the loading and unloading mechanism of the product positioning fixture, allowing a single person to effectively control the loading and unloading, and reducing the floor space occupied by the equipment.

Description

Technical Field

[0001] This invention relates to the field of riveting equipment technology, and more particularly to a multi-station automatic alternating riveting device for printing metal parts. Background Technology

[0002] Riveting is a common method of joining parts, usually achieved using a riveting machine. For example, Chinese patent CN93228593.7 discloses a riveting machine, which includes a motor-driven die rod feeding mechanism and a rotating mechanism mounted on the machine bed. The motor drive shaft, via a planetary gear pair with a small tooth difference, drives an output shaft that powers a cam assembly mounted on the upper part of the cylinder, forming the die rod feeding mechanism. The same drive shaft, via a splined drive shaft, drives a planetary eccentric gear set mounted on the lower part of the cylinder, forming the die rod rotating mechanism.

[0003] To facilitate subsequent installation, the printer's iron metal parts are fixed to rivets using a riveting machine. However, the existing riveting device has a complex loading and unloading mechanism and occupies a large area, resulting in low riveting efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-station automatic alternating nailing device for printing metal parts, which effectively simplifies the loading and unloading mechanism of the product positioning fixture, allows a single person to effectively control loading and unloading, and reduces the floor space occupied by the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-station automatic alternating stapling device for printing metal parts, comprising:

[0006] Product positioning fixture, which is used to place the products to be riveted and the rivets;

[0007] The loading and unloading mechanism includes a conveying track, a first loading push cylinder, and a fixture push assembly. The product positioning fixture is placed inside the conveying track. The conveying track is provided with a product unloading station, a product placement station, and a fixture loading station arranged in a straight line. A first notch corresponding to the position of the product unloading station is provided on the side wall of the conveying track. A second notch corresponding to the position of the fixture loading station is also provided on the side wall of the conveying track. The first loading push cylinder is located at one end of the conveying track. A first loading push block is provided on the piston rod of the first loading push cylinder.

[0008] The riveting mechanism includes a worktable, a first slide rail, a second slide rail, a material feeding push cylinder, and a riveting machine. The first slide rail is fixedly installed on the worktable, and a first slider is provided on the first slide rail. A first mounting base is fixedly installed on the first slider. The second slide rail is fixedly installed on the first mounting base, and a second slider is provided on the second slide rail. A fixture plate is fixedly installed on the second slider. The edge of the fixture plate is provided with a first stop arranged circumferentially. The structure of the first stop is "U"-shaped, and the opening of the first stop faces the conveying rail. The material feeding push cylinder is fixedly installed on one side of the fixture plate. A material feeding push block is provided on the piston rod of the material feeding push cylinder. A fourth notch is provided on the first stop to avoid the material feeding push block. The riveting machine is provided with a riveting head, and the position of the riveting head is correspondingly set above the fixture plate.

[0009] The material handling mechanism is used to pick up the riveted products to be riveted from the product positioning fixture.

[0010] As a further description of the above technical solution:

[0011] The product positioning fixture includes a fixture base plate, lifting cylinders, a panel, product positioning slots, rivet holes, and rivet positioning blocks. Lifting cylinders are located at the four inner corners of the upper surface of the fixture base plate. The panel is fixedly mounted on the piston rod of the lifting cylinders. The panel has several product positioning slots arranged in an array. The rivet holes are located on the bottom surface of the product positioning slots. The rivet positioning blocks are located below the panel and are fixedly mounted on the fixture base plate. The rivet positioning blocks have blind holes for positioning rivets, and the positions of the blind holes correspond to the rivet holes.

[0012] As a further description of the above technical solution:

[0013] The lower surface of the fixture base plate is provided with a first convex hump group and a second convex hump group on opposite sides. The first convex hump group includes at least two first convex humps, and several first convex humps are arranged sequentially along a straight line. The cross-section of the first convex hump is arc-shaped. The second convex hump group includes at least two second convex humps, and several second convex humps are arranged sequentially along a straight line. The cross-section of the second convex hump is arc-shaped. The bottom surface of the fixture support plate is provided with a first recess corresponding to the position of the first convex hump. The bottom surface of the fixture support plate is also provided with a second recess corresponding to the position of the second convex hump.

[0014] As a further description of the above technical solution:

[0015] The first and second convex hulls are arranged in a staggered manner.

[0016] As a further description of the above technical solution:

[0017] Pressure sensors are also installed on the bottom surface of the fixture tray.

[0018] As a further description of the above technical solution:

[0019] The fixture pushing assembly includes a first lead screw module and a first fixture push block. A third notch is provided on the bottom surface of the conveying track at the fixture loading station. The first lead screw module is located below the conveying track and a first slide is provided on the first lead screw module. The first fixture push block is slidably connected to the bottom surface of the conveying track. The bottom of the first fixture push block passes through the third notch and connects to the first slide.

[0020] As a further description of the above technical solution:

[0021] The material handling mechanism includes a second lead screw module, a material lifting cylinder, a material mounting plate, and electromagnets. The second lead screw module is located above the conveying track and has a second slide. The material lifting cylinder is fixedly mounted on the second slide, and the material mounting plate is fixedly mounted on the piston rod of the material lifting cylinder. The material mounting plate has several electromagnets arranged in an array, with each electromagnet position corresponding to a product positioning slot.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In this invention, the conveying track has a product unloading station, a product placement station and a fixture loading station arranged in a straight line to form multiple stations. The product positioning fixture forms a cycle of unloading, loading and unloading on the conveying track, which effectively simplifies the loading and unloading mechanism of the product positioning fixture. A single person can effectively control the loading and unloading, reduce the floor space of the equipment and improve the product riveting efficiency.

[0024] 2. In this invention, the design of the first and second protrusions on the lower surface of the fixture base plate makes the sliding of the product positioning fixture within the conveyor track smoother and easier to push. The design of the first and second recesses on the bottom surface of the fixture tray effectively positions the product positioning fixture on the fixture tray, facilitating the assurance of riveting quality. The cross-sections of the first and second protrusions are arc-shaped, and the shapes of the first and second recesses match those of the corresponding first and second protrusions, allowing the product positioning fixture to be easily pushed out of the fixture tray.

[0025] 3. In this invention, a pressure sensor is used to detect changes in the weight of the product positioning fixture, thereby determining whether the product to be riveted and the rivets are all in place. If they are not all in place, riveting is stopped. The first convex bulge enters the first recess, and the second convex bulge enters the second recess, fully positioning the product positioning fixture on the fixture plate. This ensures that the position of the product positioning fixture is the same in each test, avoiding testing errors by the pressure sensor. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a side view structural diagram of a multi-station automatic alternating nailing device for printing metal parts.

[0028] Figure 2 This is a schematic diagram of the product positioning fixture in a multi-station automatic alternating nailing device for metal parts in a printer.

[0029] Figure 3 This is a schematic diagram showing the state changes of the product positioning fixture in a multi-station automatic alternating nailing device for metal parts in a printer.

[0030] Figure 4 This is a top view of the loading and unloading mechanism in a multi-station automatic alternating stapling device for printing metal parts. Figure 1 .

[0031] Figure 5 This is a top view of the loading and unloading mechanism in a multi-station automatic alternating stapling device for printing metal parts. Figure 2 .

[0032] Figure 6 This is a schematic diagram of the riveting mechanism in a multi-station automatic alternating rivet pressing device for metal parts in a printer.

[0033] Figure 7 This is a schematic diagram of the fixture tray in a multi-station automatic alternating nailing device for printing metal parts.

[0034] Figure 8 This is a schematic diagram of the loading state of the fixture pushing component in a multi-station automatic alternating nailing device for printing metal parts.

[0035] Figure 9 This is a schematic diagram of the fixture pushing component in a multi-station automatic alternating stapling device for printing metal parts.

[0036] Figure 10 This is a schematic diagram of the material handling mechanism in a multi-station automatic alternating stapling device for printing metal parts.

[0037] Legend:

[0038] 1. Product positioning fixture; 11. Fixture base plate; 111. First convex bulge; 112. Second convex bulge; 12. Lifting cylinder; 13. Panel; 14. Product positioning groove; 15. Rivet hole; 16. Rivet positioning block; 2. Loading and unloading mechanism; 21. Conveying track; 211. First notch; 212. Second notch; 213. Third notch; 22. First loading push cylinder; 221. First loading push block; 23. Fixture pushing assembly; 231. First lead screw module; 2311. First slide; 232. First fixture push block; 3. Riveting mechanism 31. Workbench; 32. First slide rail; 321. First slider; 322. First mounting base plate; 33. Second slide rail; 331. Second slider; 332. Fixture support plate; 3321. First retaining edge; 3322. First recess; 3323. Second recess; 3324. Pressure sensor; 34. Unloading push cylinder; 341. Unloading push block; 35. Riveting machine; 351. Riveting head; 4. Material handling mechanism; 41. Second lead screw module; 411. Second slide table; 42. Unloading lifting cylinder; 43. Unloading mounting plate; 44. Electromagnet. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0041] Please see Figure 1-10 This invention provides a technical solution: a multi-station automatic alternating stapling device for printing metal parts, comprising:

[0042] Product positioning fixture 1, which is used to place the product to be riveted and the rivets;

[0043] The loading and unloading mechanism 2 includes a conveying track 21, a first loading push cylinder 22, and a fixture push assembly 23. The product positioning fixture 1 is placed in the conveying track 21. The conveying track 21 is provided with a product unloading station, a product placement station, and a fixture loading station arranged in a straight line. A first notch 211 corresponding to the product unloading station is provided on the side wall of the conveying track 21. A second notch 212 corresponding to the fixture loading station is also provided on the side wall of the conveying track 21. The first loading push cylinder 22 is located at one end of the conveying track 21. A first loading push block 221 is provided on the piston rod of the first loading push cylinder 22.

[0044] The riveting mechanism 3 includes a worktable 31, a first slide rail 32, a second slide rail 33, a feeding push cylinder 34, and a riveting machine 35. The first slide rail 32 is fixedly mounted on the worktable 31, and a first slider 321 is provided on the first slide rail 32. A first mounting base plate 322 is fixedly mounted on the first slider 321. The second slide rail 33 is fixedly mounted on the first mounting base plate 322, and a second slider 331 is provided on the second slide rail 33. A fixture support plate 332 is fixedly mounted on the second slider 331. The edge is provided with a first stop 3321 arranged along its own circumference. The structure of the first stop 3321 is "U" shaped. The opening of the first stop 3321 faces the conveying track 21. The material feeding push cylinder 34 is fixedly installed on one side of the fixture support plate 332. The piston rod of the material feeding push cylinder 34 is provided with a material feeding push block 341. The first stop 3321 is provided with a fourth notch for avoiding the material feeding push block 341. The riveting machine 35 is provided with a riveting head 351. The position of the riveting head 351 is correspondingly set above the fixture support plate 332.

[0045] Material handling mechanism 4 is used to pick up the product to be riveted after riveting on the product positioning fixture 1.

[0046] The conveyor track 21 has a product unloading station, a product placement station and a fixture loading station arranged in a straight line, forming multiple stations. The product positioning fixture 1 forms a cycle of unloading, loading and unloading on the conveyor track 21, which effectively simplifies the loading and unloading mechanism of the product positioning fixture 1, reduces the floor space of the equipment and improves the product riveting efficiency.

[0047] The first mounting base plate 322 moves back and forth on the first slide rail 32 via the first slider 321, realizing Y-axis movement on the worktable 31. The fixture tray 332 moves back and forth on the second slide rail 33 via the second slider 331, realizing X-axis movement on the worktable 31. This allows the product positioning fixture 1 on the fixture tray 332 to move in the XY direction, so that the products to be riveted in the different product positioning slots 14 on the product positioning fixture 1 can be moved to the riveting joint 351 for riveting.

[0048] The working principle of the rivet riveting mechanism 3 is as follows: the fixture support plate 332 moves to the side of the second notch 212 of the fixture loading station on the conveying track 21. Then, the fixture pushing component 23 pushes the product positioning fixture 1 of the fixture loading station away from the second notch 212 from the conveying track 21 and into the fixture support plate 332 of the rivet riveting mechanism 3. The fixture support plate 332 drives the product positioning fixture 1 to move XY and move to the bottom of the rivet joint 351 for riveting.

[0049] Product positioning fixture 1 includes fixture base plate 11, lifting cylinder 12, panel 13, product positioning groove 14, rivet hole 15, and rivet positioning block 16. Lifting cylinder 12 is provided at the four inner corners of the upper surface of fixture base plate 11. Panel 13 is fixedly installed on the piston rod of lifting cylinder 12. Panel 13 is provided with a plurality of product positioning grooves 14 arranged in an array. Rivet hole 15 is provided on the bottom surface of product positioning groove 14. Rivet positioning block 16 is provided below panel 13 and is fixedly installed on fixture base plate 11. Rivet positioning block 16 is provided with blind hole for positioning rivets, and the position of blind hole corresponds to rivet hole 15.

[0050] The lower surface of the fixture base plate 11 has a first convex bulge group and a second convex bulge group on opposite sides. The first convex bulge group includes at least two first convex bulges 111, which are arranged sequentially along a straight line. The cross-section of the first convex bulge 111 is arc-shaped. The second convex bulge group includes at least two second convex bulges 112, which are arranged sequentially along a straight line. The cross-section of the second convex bulge 112 is arc-shaped. The bottom surface of the fixture support plate 332 has a first recess 3322 corresponding to the position of the first convex bulge 111, and the bottom surface of the fixture support plate 332 also has a second recess 3323 corresponding to the position of the second convex bulge 112. The shape of the recess matches the convex bulges on the lower surface of the fixture base plate 11.

[0051] The design of the first protrusion 111 and the second protrusion 112 on the lower surface of the fixture base plate 11 makes the sliding of the product positioning fixture 1 within the conveyor track 21 smoother and easier to push. The design of the first recess 3322 and the second recess 3323 on the bottom surface of the fixture support plate 332 effectively positions the product positioning fixture 1 on the fixture support plate 332, facilitating the assurance of riveting quality. The cross-section of the first protrusion 111 and the second protrusion 112 is arc-shaped, and the first recess and the second recess match the shape of the corresponding first protrusion and the second protrusion, making it easier for the product positioning fixture 1 to be pushed out of the fixture support plate 332.

[0052] The first convex 111 and the second convex 112 are staggered. The staggered arrangement of the first convex 111 and the second convex 112 can prevent the first convex 111 from entering the second recess 3323 when the product positioning fixture 1 slides into the fixture support plate 332, thus avoiding affecting the smooth pushing of the product positioning fixture 1.

[0053] A pressure sensor 3324 is also provided on the bottom surface of the fixture tray 332. The pressure sensor 3324 is embedded in the bottom surface of the fixture tray 332. During the process of the product positioning fixture 1 sliding into the fixture tray 332, the design of the first protrusion 111 and the second protrusion 112 makes there a gap between the lower surface of the fixture base plate 11 and the bottom surface of the fixture tray 332, so that it will not contact the upper surface of the pressure sensor 3324. When the product positioning fixture 1 is completely slid into the fixture tray 332, the first protrusion 111 enters the first recess 3322, and the second protrusion 112 enters the second recess 3323. The height of the lower surface of the fixture base plate 11 decreases and contacts the pressure sensor 3324. The pressure sensor 3324 can be used to detect the weight change of the product positioning fixture 1, thereby determining whether the product to be riveted and the rivets are all placed in place. If they are not all placed in place, the riveting is stopped. The first convex 111 enters the first recess 3322, and the second convex 112 enters the second recess 3323, fully positioning the product positioning fixture 1 on the fixture tray 332, ensuring that the position of the product positioning fixture 1 is the same in each test, and avoiding the test error of the pressure sensor 3324.

[0054] The fixture pushing assembly 23 includes a first lead screw module 231 and a first fixture push block 232. A third notch 213 is provided on the bottom surface of the conveyor track 21 at the fixture loading station. The first lead screw module 231 is located below the conveyor track 21, and a first slide 2311 is provided on the first lead screw module 231. The first fixture push block 232 is slidably connected to the bottom surface of the conveyor track 21. The bottom of the first fixture push block 232 passes through the third notch 213 and connects to the first slide 2311, smoothly pushing the product positioning fixture 1. The width of the third notch 213 is smaller than the diameter of the bottom surface of the first convex 111 and the second convex 112, so it will not affect the sliding of the product positioning fixture 1.

[0055] The material handling mechanism 4 includes a second lead screw module 41, a material lifting cylinder 42, a material mounting plate 43, and electromagnets 44. The second lead screw module 41 is positioned above the conveying track 21, and a second slide 411 is mounted on the second lead screw module 41. The material lifting cylinder 42 is fixedly mounted on the second slide 411, and the material mounting plate 43 is fixedly mounted on the piston rod of the material lifting cylinder 42. Several electromagnets 44 are arranged in an array on the material mounting plate 43, with each electromagnet 44 corresponding to a product positioning slot 14. The electromagnets 44 are used to attract and hold the riveted products.

[0056] When the riveted product is pushed from the first notch 211 into the product unloading station of the conveyor track 21 by the unloading push cylinder 34 along with the product positioning fixture 1, the piston rod of the unloading push cylinder 34 extends to its maximum, triggering the unloading control signal. The unloading lifting cylinder 42 moves above the product unloading station of the conveyor track 21 via the second slide 411, and the piston rod of the unloading lifting cylinder 42 extends. The unloading mounting plate 43 descends, and the electromagnet 44 contacts the riveted product in the product positioning groove 14. The electromagnet 44 is energized to attract the product, and then the unloading mounting plate 43 moves upward to return to its original position, completing the unloading of the product. When the picking mechanism 4 subsequently lowers the product, the electromagnet 44 is de-energized to release the attraction.

[0057] Working principle: When riveting products, the rivet is first placed on the product positioning fixture 1 at the product placement station on the conveyor track 21, and then the product to be riveted is placed on the product positioning fixture 1. Specifically, the rivet is first placed in the rivet hole 15 of the product positioning fixture 1, with the bottom of the rivet extending into the blind hole of the rivet positioning block 16. Then, the product to be riveted is placed in the product positioning groove 14, with the top of the rivet passing through the through hole on the product to be riveted. During riveting, the rivet head 351 of the riveting machine 35 deforms the top of the rivet, and the rivet is riveted and fixed to the product to be riveted.

[0058] On the product positioning fixture 1 at the product unloading station on the conveyor track 21, after the riveted product is taken away and unloaded by the material handling mechanism 4, the piston rod of the first loading push cylinder 22 extends and pushes the empty product positioning fixture 1 through the first loading push block 221. The empty product positioning fixture 1 squeezes and pushes the product positioning fixture 1, which was originally in the product placement station and already had rivets and products installed, to the fixture loading station. The operator places the rivets and the products to be riveted on the empty product positioning fixture 1 at the product placement station. Then, the fixture pushing component 23 is activated to push the product positioning fixture 1 at the fixture loading station away from the conveyor track 21 through the second notch 212 and into the fixture support plate 332 of the rivet riveting mechanism 3.

[0059] When the riveted product is pushed from the first notch 211 into the product unloading station of the conveying track 21 by the unloading cylinder 34 along with the product positioning fixture 1, the piston rod of the unloading cylinder 34 extends to its maximum, and the product positioning fixture 1 is just fully inserted into the conveying track 21. At this time, the lifting cylinder 12 is triggered, the piston rod of the lifting cylinder 12 extends, and the panel 13 is lifted, so that the rivet is disengaged from the rivet positioning block 16, making it easier for the picking mechanism 4 to pick up and lift the riveted product in the product positioning groove 14.

[0060] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-station automatic alternate nail press device for printer metal parts, characterized in that, include: Product positioning fixture (1), which is used to place the product to be riveted and the rivets; The loading and unloading mechanism (2) includes a conveying track (21), a first loading push cylinder (22), and a fixture push assembly (23). The product positioning fixture (1) is placed in the conveying track (21). The conveying track (21) is provided with a product unloading station, a product placement station, and a fixture loading station arranged in a straight line. The side wall of the conveying track (21) is provided with a first notch (211) corresponding to the position of the product unloading station. The side wall of the conveying track (21) is also provided with a second notch (212) corresponding to the position of the fixture loading station. The first loading push cylinder (22) is located at one end of the conveying track (21). The piston rod of the first loading push cylinder (22) is provided with a first loading push block (221). The riveting mechanism (3) includes a worktable (31), a first slide rail (32), a second slide rail (33), a feeding push cylinder (34), and a riveting machine (35). The first slide rail (32) is fixedly installed on the worktable (31), and a first slider (321) is provided on the first slide rail (32). A first mounting base plate (322) is fixedly installed on the first slider (321). The second slide rail (33) is fixedly installed on the first mounting base plate (322), and a second slider (331) is provided on the second slide rail (33). A fixture support plate (332) is fixedly installed on the second slider (331). 2) The edge is provided with a first stop (3321) arranged along its circumference. The structure of the first stop (3321) is "U" shaped. The opening of the first stop (3321) faces the conveying track (21). The material feeding push cylinder (34) is fixedly installed on one side of the fixture plate (332). The piston rod of the material feeding push cylinder (34) is provided with a material feeding push block (341). The first stop (3321) is provided with a fourth notch for avoiding the material feeding push block (341). The riveting machine (35) is provided with a riveting head (351). The position of the riveting head (351) is correspondingly set above the fixture plate (332). The material handling mechanism (4) is used to pick up the riveted product to be riveted from the product positioning fixture (1); The product positioning fixture (1) includes a fixture base plate (11), a lifting cylinder (12), a panel (13), a product positioning groove (14), rivet holes (15), and a rivet positioning block (16). The lifting cylinder (12) is provided at the four inner corners of the upper surface of the fixture base plate (11). The panel (13) is fixedly installed on the piston rod of the lifting cylinder (12). The panel (13) is provided with a plurality of product positioning grooves (14) arranged in an array. The rivet holes (15) are provided on the bottom surface of the product positioning grooves (14). The rivet positioning block (16) is provided below the panel (13). The rivet positioning block (16) is fixedly installed on the fixture base plate (11). The rivet positioning block (16) is provided with blind holes for positioning rivets. The position of the blind holes corresponds to the rivet holes (15). The lower surface of the fixture base plate (11) is provided with a first convex hump group and a second convex hump group on opposite sides. The first convex hump group includes at least two first convex humps (111), and several first convex humps (111) are arranged sequentially along a straight line. The cross section of the first convex hump (111) is arc-shaped. The second convex hump group includes at least two second convex humps (112), and several second convex humps (112) are arranged sequentially along a straight line. The cross section of the second convex hump (112) is arc-shaped. The bottom surface of the fixture support plate (332) is provided with a first recess (3322) corresponding to the position of the first convex hump (111), and the bottom surface of the fixture support plate (332) is also provided with a second recess (3323) corresponding to the position of the second convex hump (112). The first convex hull (111) and the second convex hull (112) are arranged in a staggered manner; A pressure sensor (3324) is also provided on the bottom surface of the fixture tray (332). During the process of the product positioning fixture (1) sliding into the fixture tray (332), the design of the first convex humps (111) and the second convex humps (112) creates a gap between the lower surface of the fixture base plate (11) and the bottom surface of the fixture tray (332), so that they will not contact the upper surface of the pressure sensor (3324). When the product positioning fixture (1) is completely slid into the fixture tray (332), the first convex humps (111) enter the first recess (3322), and the second convex humps (112) enter the second recess (3323). The height of the lower surface of the fixture base plate (11) decreases and contacts the pressure sensor (3324). The pressure sensor (3324) is used to detect the weight change of the product positioning fixture (1), thereby determining whether the product to be riveted and the rivets are all placed in place.

2. The automatic multi-station alternate nail pressing device for the metal parts of a printer according to claim 1, characterized in that, The fixture pushing assembly (23) includes a first lead screw module (231) and a first fixture push block (232). A third notch (213) is provided on the bottom surface of the conveying track (21) at the fixture loading station. The first lead screw module (231) is located below the conveying track (21). A first slide (2311) is provided on the first lead screw module (231). The first fixture push block (232) is slidably connected to the bottom surface of the conveying track (21). The bottom of the first fixture push block (232) passes through the third notch (213) and connects to the first slide (2311).

3. The automatic multi-station alternate nail press device for printer metal parts according to claim 1, characterized in that, The material handling mechanism (4) includes a second lead screw module (41), a material lifting cylinder (42), a material mounting plate (43), and an electromagnet (44). The second lead screw module (41) is located above the conveying track (21). A second slide (411) is provided on the second lead screw module (41). The material lifting cylinder (42) is fixedly installed on the second slide (411). The material mounting plate (43) is fixedly installed on the piston rod of the material lifting cylinder (42). A plurality of electromagnets (44) are arranged in an array on the material mounting plate (43). The position of one electromagnet (44) corresponds to one product positioning groove (14).

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