Brake arm riveting device of pincer-like brake

Abstract

The invention relates to the technical field of pincerlike brake pressing riveting, and discloses a pincerlike brake brake arm riveting device which comprises a workbench, a pressing riveting mechanism arranged on the workbench, a material ejecting mechanism arranged on the rear side of the pressing riveting mechanism, a control assembly and an automatic feeding mechanism arranged on one side of the material ejecting mechanism. The rivet pressing mechanism comprises a lower die assembly arranged on the workbench, a supporting frame arranged on the rear side of the lower die assembly, a top plate arranged on one side of the top of the supporting frame, an upper die assembly suspended above the lower die assembly through the top plate and a driving motor arranged on the top of the top plate. The upper die assembly drives the rivet to move downwards to the target position of the brake arm to be riveted on the lower die assembly in a suspended suction mode to be riveted. The universal riveting equipment solves the problems that in the rivet feeding and riveting mode, the dependence on manpower is large, the working efficiency is low, workers are prone to being accidentally injured, and the requirement for batch production of enterprises is difficult to meet.

Description

Technical Field

[0001] The present invention relates to the technical field of caliper brake pressure riveting, and in particular to a caliper brake brake arm riveting device. Background Art

[0002] Riveting technology has a long history and is now widely used in the industrial field. Rivets are a widely used fixed connector with a simple structure and convenient riveting. Riveting machines are often used to press and rivet objects together. Currently, the rivet connection between the caliper brake arm and the rivet as the brake parts of bicycles and sports cars is mainly carried out manually by general riveting equipment; Figure 7 As shown, the die-cast brake arm 8 is provided with a riveting portion 81, and a riveting hole 82 is provided at the riveting portion 81 for the riveting column 72 of the rivet 7 to pass through for riveting; At present, there is no special riveting device for clamp-type brake arms in the industry. Generally, traditional hydraulic presses are used to drive general riveting equipment, such as CN116493535A, an automatic riveting machine. During operation, the rivet 7 is first pre-installed in the riveting hole 82 of the brake arm 8 by manual labor, and then manually taken to the positioning tooling of the general riveting equipment and force is applied to it to make the tail of the rivet 7 column 72 curl outward and fixed on the riveted part 81, thereby achieving the fixing effect; this general riveting equipment requires manual loading and single-point pressing, the positioning accuracy is not high, it is easy to be overloaded, the labor intensity is high, the production efficiency is low, and the product consistency guarantee ability is weak. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a caliper brake arm riveting device, which overcomes the problems of using general riveting equipment in rivet feeding and riveting, which is highly dependent on manual labor, has low work efficiency, is prone to accidental injury to workers, and is difficult to meet the requirements of enterprise mass production.

[0004] In order to achieve the above objectives, this application adopts the following technical solutions: The present invention is a caliper brake arm riveting device, comprising a workbench, a riveting mechanism arranged on the workbench, a pushing mechanism arranged on the rear side of the riveting mechanism, a control assembly and an automatic feeding mechanism arranged on one side of the pushing mechanism; the riveting mechanism comprises: a lower die assembly arranged on the workbench, a support frame arranged on the rear side of the lower die assembly, a top plate arranged on one side of the top of the support frame, an upper die assembly suspended above the lower die assembly through the top plate and a driving motor arranged on the top of the top plate, the pushing mechanism pushes the rivet to the bottom of the upper die assembly, and the upper die assembly drives the rivet downward by suspension to the target position of the brake arm to be riveted placed on the lower die assembly for riveting.

[0005] Further improvement lies in that the lower die assembly is composed of a riveting head and a riveting head mounting base, the top of the riveting head is provided with a tapered riveting part matched with the rivet, and the riveting head mounting base is fixedly connected with the workbench through the lower die base.

[0006] Further improvement lies in that the top end center of the riveting head is further provided with a guide and spring material structure, the guide and spring material structure comprises a thimble arranged in the inner hole of the riveting head and a spring return member arranged at the other end of the thimble.

[0007] Further improvement lies in that the support frame is further provided with a material ejection outlet matched with the material ejection mechanism at the position corresponding to the upper die assembly, the lower end of the upper die assembly is provided with a columnar riveting end, the columnar riveting end is provided with an inner recess step groove structure composed of a first recess and a second recess, the first recess is matched with the head of the rivet, and the second recess is embedded with a suction structure.

[0008] Further improvement lies in that the suction structure is a magnetic suction or a negative pressure suction.

[0009] Further improvement lies in that the material ejection mechanism comprises a material ejection plate, a driving cylinder arranged at one end of the material ejection plate, a connecting base arranged at one side of the material ejection plate, and a connecting guide plate arranged on the connecting base, the connecting guide plate is provided with a sliding rail matched with a sliding seat arranged on the material ejection plate for sliding, and the driving cylinder is fixedly connected with one end of the connecting guide plate through a connecting flange.

[0010] Further improvement lies in that one end of the material ejection plate is provided with a material groove matched with the rivet, one side of the material groove is provided with a feeding port matched with the material outlet of the automatic feeding mechanism, the other end of the material ejection plate is provided with a driving connection part, and the driving connection part is provided with a connecting hole matched with the top rod of the driving cylinder.

[0011] Further improvement lies in that the bottom and the side wall of the material groove are further provided with a foolproof through hole, and the side of the driving connection part is further provided with a connecting side plate below, and the side plate is matched and connected with the sliding seat.

[0012] Further improvement lies in that an adjusting mechanism is arranged between the connecting base and the connecting guide plate.

[0013] Compared with the prior art, the present application has the beneficial effects that: The present application uses the automatic feeding mechanism to transport the rivet to the material trough at the top of the ejecting mechanism, and the ejecting mechanism ejects the rivet to the bottom of the upper mold assembly through the driving assembly, and the rivet in the material trough is suspended by the magnet arranged at the lower end of the upper mold assembly and moves down to the end of the ejector pin at the top of the lower mold assembly together with the upper mold assembly, and continues to move downward to press the ejector pin to guide it through the riveting hole of the brake arm to be riveted placed on the lower mold assembly, and press riveting is performed when the rivet abuts the rivet head provided on the lower mold assembly; after the riveting is completed, the upper mold assembly continues to move upward to suspend and attract the next rivet ejected by the ejecting mechanism, and the riveted rivet Under the action of the ejector and the return spring, the riveted clamp brake arm is driven to pop out, and the next brake arm to be riveted is set on the upper mold assembly with the ejector to continue the next cycle; the riveting device of the present application has a simple structure and strong applicability. It does not require complex special tooling for positioning and manual assembly of rivets to perform safe and efficient riveting operations, thereby improving product production efficiency and product riveting quality; this clamping and installation method of the rivet upper suction and lower positioning guide structure ensures that the rivet is accurately positioned and is not prone to overload and pressure riveting offset, thereby improving operational reliability and eliminating the safety hazards of manual loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic top view of the present invention; Figure 3 This is a partial enlarged view of the press riveting mechanism and the ejecting mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the top material plate of the present invention; Figure 5 is a cross-sectional view of the lower mold assembly of the present invention; Figure 6 is a partial cross-sectional view of the upper mold assembly of the present invention; Figure 7 It is a schematic diagram of the brake arm to be riveted and the rivet of the present invention.

[0015] Figure ID: Workbench 1; riveting mechanism 2; support frame 21; ejection outlet 211; top plate 22; driving motor 23; upper die assembly 24; first recess 241; second recess 242; lower die assembly 25; riveting head mounting base 251; riveting head 252; lower die base 26; guiding and springing structure 27; ejector pin 271; spring return 272; adsorbing structure 28; ejection mechanism 3; ejection plate 31; material groove 311; feeding port 312; fool-proof through hole 313; driving connection 314; connecting hole 315; driving cylinder 32; connecting base 33; connecting guide plate 34; slide rail 35; slide base 351; connecting flange 36; connecting side plate 37; adjusting mechanism 38; control assembly 4; automatic feeding mechanism 5; foot switch 6; rivet 7; rivet head 71; riveting column 72; brake arm to be riveted 8; riveting part 81; riveting hole 82. DETAILED DESCRIPTION

[0016] In order to deepen the understanding of the present application, the present application will be further described in detail below in conjunction with the drawings. The embodiments are only used to explain the present application and do not constitute a limitation on the protection scope of the present application.

[0017] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the indicated combination or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0018] The present application will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1-7The figure shows a caliper brake arm riveting device, comprising a workbench 1, a riveting mechanism 2 arranged on the workbench 1, a pushing mechanism 3 arranged at the rear side of the riveting mechanism 2, a control component 4 and an automatic feeding mechanism 5 arranged on one side of the pushing mechanism 3; the riveting mechanism 2 comprises: a lower die assembly 25 arranged on the workbench 1, a support frame 21 arranged at the rear side of the lower die assembly 25, a top plate 22 arranged on one side of the top of the support frame 21, an upper die assembly 24 suspended above the lower die assembly 25 through the top plate 22 and a driving motor 23 arranged on the top of the top plate 22, the pushing mechanism 3 pushes the rivet 7 to the bottom of the upper die assembly 24, and the upper die assembly 24 drives the rivet 7 downward to the target position of the brake arm 8 to be riveted placed on the lower die assembly 25 for riveting; the automatic feeding mechanism 5 transports the rivet 7 to one end of the pushing mechanism 3, and the pushing mechanism 3 is connected to the upper die assembly 24. The driving assembly 32 pushes the rivet 7 to the bottom of the upper mold assembly 24, and the adsorption structure arranged at the lower end of the upper mold assembly 24 suspends the rivet 7 in the material trough 311 at one end of the ejection mechanism 3 and descends with the upper mold assembly 24 through the rivet hole 82 of the brake arm 8 to be riveted placed on the lower mold assembly 25 until it abuts against the rivet head on the top of the lower mold assembly 25 for pressure riveting; after the riveting is completed, the upper mold assembly 24 continues to suspend and drive the next rivet 7 upward, and after riveting, the rivet 7 drives the riveted clamp brake arm to pop out under the reset elastic force of the ejector, and the next brake arm 8 to be riveted is put on the ejector to continue the next cycle; this riveting device has a simple structure and strong applicability, and does not require complex special tooling for positioning and manual assembly of rivets 7, and can perform safe and efficient riveting operations, thereby improving product production efficiency and product riveting quality.

[0020] Specific: such as Figure 1 、 3 5, the lower die assembly 25 consists of a rivet head 252 and a rivet head mounting seat 251. The top of the rivet head 252 is provided with a conical riveting portion adapted to the inner hole at the bottom of the rivet 7. The rivet head mounting seat 251 is fixedly connected to the workbench 1 through the lower die seat 26. The setting of the conical riveting portion is convenient for placing the brake arm 8 to be riveted and guiding and positioning the inner hole at the bottom of the rivet 7, and pressing the riveting to expand; in order to facilitate the ejection mechanism 3 to transport the rivet 7 to the target position, as shown in FIG. Figure 1 、 3As shown, the support frame 21 corresponding to the upper die assembly 24 position is also provided with the material ejecting mechanism 3 adapted material ejecting outlet 211; the upper die assembly 24 and the drive motor 23 output shaft transmission connection in the upper of the lower die assembly 25, the upper die assembly 24 lower end is provided with a cylindrical riveting end, the cylindrical riveting end is provided with a concave step groove structure composed of a first groove 241 and a second groove 242, the first groove 241 is adapted to the head of the rivet 7, the second groove 242 is embedded with the adsorption structure 28 to send the rivet 7 in front of the material ejecting mechanism 3 to the upper die assembly 24 below, the adsorption structure 28 provided in the second groove 242 adsorbs the head of the rivet 7 into the first groove 241, the drive motor 23 drives the upper die assembly 24 and the rivet 7 together to press into the riveting hole 82 of the brake arm 8 to be riveted, without manual installation of the rivet 7, convenient and safe, also does not need complex positioning tooling for positioning, only need to position the riveting hole 82 of the brake arm 8 to be riveted in the tapered riveting part of the riveting head 252, simple structure, strong applicability, at the same time, this kind of upper adsorption and lower tapered positioning and guiding structure of the rivet 7 ensures the positioning accuracy of the rivet 7 and is not easy to produce load deviation and riveting deviation, improves the production efficiency and product riveting quality, at the same time, improves the feeding speed and feeding safety, so as to meet the batch production of products; As Figure 2-3 shown: the material ejecting mechanism 3, including the material ejecting plate 31, the drive cylinder 32 provided at one end of the material ejecting plate 31, the connecting seat 33 provided at one side of the material ejecting plate 31 and the connecting guide plate 34 provided on the connecting seat 33, the connecting guide plate 34 is provided with a slide rail 35 which is adapted to slide with the slide seat 351 provided on the material ejecting plate 31, the drive cylinder 32 is fixedly connected with one end of the connecting guide plate 34 through the connecting flange 36, one side of the connecting flange 36 is fixedly connected with the baffle on the rear side of the workbench 1; one end of the material ejecting plate 31 is provided with the rivet 7 adapted material groove 311, one side of the material groove 311 is provided with the feeding port 312, the feeding port 312 is adapted to the discharge port of the automatic feeding mechanism 5, the other end of the material ejecting plate 31 is provided with the drive connecting part 314, the drive connecting part 314 is provided with the connecting hole 315 adapted to the top rod of the drive cylinder 32.

[0021] An optional embodiment, as Figure 3 , 5As shown: a guide spring structure 27 is further provided at the center of the top of the rivet head 252, and the guide spring structure 27 includes a pin 271 arranged in the inner hole of the rivet head 252 and a spring return member 272 arranged at the other end of the pin 271; specifically: a stepped through hole is provided at the center of the rivet head 252, the upper part is provided as a small-diameter hole for the small-diameter end of the pin 271 to pass through, a large-diameter hole is provided at the lower part of the small-diameter hole to adapt to the large-diameter end of the other end of the pin 271, a spring return member 272 is provided at the rear end of the large-diameter end of the pin 271 to abut, and the other end of the spring return member 272 abuts against the mounting groove of the rivet head mounting seat 251, and a lock is provided on one side of the joint mounting seat 251 The tightening hole is used to lock and fix the rivet head 252 with a bolt or a pin. The setting of the ejector pin 271 and the spring return member 272 serves as a guide and limit for the rivet 7 in the downward pressure riveting, preventing the danger of the workpiece jumping out and damaging the workpiece caused by the offset or overload in the downward pressure riveting process. At the same time, it ensures that the rivet 7 is accurately and smoothly inserted into the riveted hole, and also serves as a guide for the installation of the brake arm to be riveted. After the downward pressed rivet 7 abuts against the rivet head 252, the ejector pin 271 retracts into the hole under the action of the spring return member 272 without affecting the riveting. After the riveting is completed, under the action of the spring return member 272, the ejector pin 271 rebounds to the rebound force of the riveted rivet 7.

[0022] An optional implementation method, such as Figure 6 As shown: the adsorption structure 28 is set to magnetic attraction or negative pressure adsorption; specifically: the magnetic attraction can be set to a strong magnet embedded in the second groove 242, or a connected suction hole can be opened above the second groove 242, and an external negative pressure mechanism can adsorb the rivet 7 in the first groove 241.

[0023] An optional implementation method, such as Figure 4 As shown, the bottom and side walls of the trough 311 are further provided with anti-fouling through holes 313, and a connecting side plate 37 is further provided below one side of the drive connection portion 314. The side plate 37 is adapted to be connected to the slide 351. The anti-fouling through holes 313 are provided to facilitate the ejection of the rivet 7 from the bottom or side after the trough 311 is stuck with the material.

[0024] An optional implementation method, such as Figure 6 As shown, an adjustment mechanism 38 is provided between the connecting seat 33 and the connecting guide plate 34 to facilitate adjustment of the height position relationship between the ejection mechanism 3, the riveting mechanism 2, and the feeding port of the feeding mechanism 5. Specifically, the adjustment mechanism 38 comprises a sliding seat and a slide rail arranged between the connecting seat 33 and the connecting guide plate 34, and a telescopic cylinder connected to the top of the connecting guide plate 34. The feeding mechanism 5 is a vibrating plate selection feeding mechanism commonly used in the prior art. The vibrating plate selection feeding mechanism realizes the continuous feeding of rivets 7, thereby providing a guarantee for improving the riveting efficiency. The setting of the control component 4 can improve the intelligent automation level of the device. At the same time, a foot switch 6 is provided at the bottom of the workbench 1 for easy operation.

[0025] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A caliper brake arm riveting device, characterized in that: The invention comprises a workbench (1), a riveting mechanism (2) arranged on the workbench (1), a feeding mechanism (3) arranged at the rear side of the riveting mechanism (2), a control component (4) and an automatic feeding mechanism (5) arranged at one side of the feeding mechanism (3); the riveting mechanism (2) comprises: a lower die assembly (25) arranged on the workbench (1), a support frame (21) arranged at the rear side of the lower die assembly (25), a top plate (22) arranged at one side of the top of the support frame (21), an upper die assembly (24) suspended above the lower die assembly (25) through the top plate (22) and a driving motor (23) arranged at the top of the top plate (22); the feeding mechanism (3) feeds the rivet (7) to the bottom of the upper die assembly (24); the upper die assembly (24) drives the rivet (7) downward by suction to the target position of the brake arm (8) to be riveted placed on the lower die assembly (25) for riveting.

2. The caliper brake arm riveting device according to claim 1, characterized in that: The lower die assembly (25) consists of a rivet head (252) and a rivet head mounting seat (251); a conical riveting portion adapted to the rivet (7) is provided on the top of the rivet head (252); and the rivet head mounting seat (251) is fixedly connected to the workbench (1) via the lower die seat (26).

3. The caliper brake arm riveting device according to claim 2, characterized in that: A guide spring structure (27) is further provided at the center of the top end of the rivet joint (252). The guide spring structure (27) comprises a pin (271) disposed in the inner hole of the rivet joint (252) and a spring return member (272) disposed at the other end of the pin (271).

4. The caliper brake arm riveting device according to claim 1, characterized in that: The support frame (21) is also provided with a material ejection outlet (211) adapted for the material ejection mechanism (3) at a position corresponding to the upper mold assembly (24). The lower end of the upper mold assembly (24) is provided with a columnar riveting end, and the columnar riveting end is provided with an inner concave step groove structure consisting of a first groove (241) and a second groove (242). The first groove (241) is adapted for the head of the rivet (7), and the second groove (242) is embedded with an adsorption structure (28).

5. The caliper brake arm riveting device according to claim 4, characterized in that: The adsorption structure (28) is configured to be magnetic or negative pressure adsorption.

6. The caliper brake arm riveting device according to any one of claims 1 to 5, characterized in that: The ejection mechanism (3) comprises an ejection plate (31), a driving cylinder (32) arranged at one end of the ejection plate (31), a connecting seat (33) arranged at one side of the ejection plate (31), and a connecting guide plate (34) arranged on the connecting seat (33); the connecting guide plate (34) is provided with a slide rail (35) adapted to slide with a slide seat (351) provided on the ejection plate (31); and the driving cylinder (32) is fixedly connected to one end of the connecting guide plate (34) via a connecting flange (36).

7. The caliper brake arm riveting device according to claim 6, characterized in that: A material trough (311) adapted for the rivet (7) is provided at one end of the ejector plate (31), a feeding port (312) is provided on one side of the material trough (311), and the feeding port (312) is adapted to correspond to the discharge port of the automatic feeding mechanism (5). A driving connection portion (314) is provided at the other end of the ejector plate (31), and a connecting hole (315) adapted for the ejector rod of the driving cylinder (32) is provided on the driving connection portion (314).

8. The caliper brake arm riveting device according to claim 7, characterized in that: The bottom and side walls of the trough (311) are further provided with anti-fouling through holes (313), and a connecting side plate (37) is further provided below one side of the driving connection portion (314), and the side plate (37) is adaptively connected to the slide seat (351).

9. The caliper brake arm riveting device according to claim 6, characterized in that: An adjustment mechanism (38) is provided between the connecting seat (33) and the connecting guide plate (34).

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