Novel riveting device

Abstract

The utility model relates to a novel riveting device. According to the technical scheme, a riveting press body comprises a base, a riveting press bottom die is arranged in the center of the upper surface of the base, an L-shaped rack is fixedly installed in the middle of the rear side wall of the base upwards, a hydraulic cylinder is installed on a horizontal arm of the L-shaped rack, a telescopic shaft of the hydraulic cylinder penetrates through the horizontal arm of the L-shaped rack, and the lower end of the telescopic shaft of the hydraulic cylinder is fixedly connected with a riveting press head assembly. The riveting head assembly comprises a fixing column, the center of the lower end face of the fixing column is upwards provided with a sinking groove, a groove opening of the sinking groove is provided with threads, a riveting head is screwed in the threads, the upper end face and the lower end face of the riveting head are provided with through holes in a penetrating mode, a telescopic column is movably inserted in the through holes, and the portion, at the upper end of the conical boss, of the telescopic column is sleeved with a spring. A liquid guide groove is formed in the circumferential side wall of the telescopic column at the lower end of the conical boss. The utility model has the beneficial effects that the riveting head is effectively lubricated, and the service life of the riveting head is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of riveting technology and relates to a novel riveting device. Background Technology

[0002] When riveting aluminum alloy sheets, a riveting device is often required to deform the two sheets that need to be fixedly connected by stress extrusion, so as to achieve a hard connection. Existing riveting devices have relatively simple riveting head structures. Each time they are extruded with the workpiece, there is a lot of friction between them, which makes the riveting head easy to wear and thus affects its service life.

[0003] Therefore, this utility model provides a novel riveting device to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model discloses a novel riveting device. The technical solution adopted is as follows: it includes a riveting machine body, the riveting machine body includes a base, a riveting bottom mold is formed at the center of the upper surface of the base, an L-shaped frame is fixedly installed upward at the middle part of the rear side wall of the base, a hydraulic cylinder is installed on the horizontal arm of the L-shaped frame, the telescopic shaft of the hydraulic cylinder passes through the horizontal arm of the L-shaped frame, the lower end of the telescopic shaft of the hydraulic cylinder is fixedly connected to a riveting head assembly, the riveting head assembly includes a fixed column, a countersunk groove is formed at the center of the lower end face of the fixed column, the groove opening is threaded, a riveting head is screwed into the thread, a through hole is formed through the upper and lower end faces of the riveting head, a telescopic column is movably inserted into the through hole, a conical boss is formed at the middle part of the telescopic column, a spring is fitted on the telescopic column at the upper end of the conical boss, and a fluid guiding groove is formed on the circumferential side wall of the telescopic column at the lower end of the conical boss.

[0005] As a preferred embodiment of this utility model, the upper end of the through hole is a conical opening, which matches the lower conical surface of the conical boss. This design allows the through hole to be temporarily sealed by the conical boss of the telescopic column when riveting is not being performed, due to the action of the spring, thus preventing lubricating oil from flowing out of the riveting head.

[0006] In a preferred embodiment of this utility model, the length of the telescopic column is equal to the distance from the top of the sinker to the bottom of the riveting head.

[0007] In a preferred embodiment of this utility model, a drainage channel is obliquely opened on the inner sidewall of the through hole directly opposite the upper end of the liquid guiding groove. The lower end of the drainage channel is located at the connection between the lower cone of the riveting head and the column. Three sets of drainage channels are arranged in a circumferential array around the circumferential sidewall of the riveting head. By opening three sets of drainage channels, it is convenient for the aluminum alloy workpiece to be squeezed upwards by the telescopic column during downward riveting, so that the lubricating fluid in the groove of the fixed column flows into the liquid guiding groove through the gap between the conical boss and the through hole, and finally flows to the lower cone of the riveting head through the drainage channel, and wets and covers it, thereby effectively reducing the friction between the riveting head and the aluminum alloy workpiece during riveting and extending the service life of the riveting head.

[0008] As a preferred embodiment of this utility model, a stop screw is screwed into a hole on one side of the part where the fixing column and the riveting head are combined.

[0009] As a preferred embodiment of this utility model, an inlet pipe is opened outward on the right side wall of the upper part of the settling tank. The inlet pipe is connected to the discharge pipe of the pump installed under the horizontal arm of the L-shaped frame through a hose. By using the pump, external lubricating fluid is pumped into the settling tank inside the fixed column for lubrication during the subsequent riveting process.

[0010] The beneficial effects of this utility model are as follows: The hydraulic cylinder drives the riveting head assembly to move downward, thereby causing the riveting head of the riveting head assembly to press against the surface of the aluminum alloy part. The pressed part is then pressed into the riveting mold on the base by pressure, completing the riveting connection of two aluminum alloy plates. During the riveting process, the aluminum alloy part is pressed against the lower end of the telescopic column extending from the bottom of the riveting head, causing the telescopic column to move upward and compress the spring. This causes the conical boss on the telescopic column to separate from the upper conical surface of the through hole of the riveting head, allowing the lubricating fluid in the fixed column to enter the liquid guiding groove of the telescopic column. Then, by the pressurization of the liquid pump, the lubricating fluid is discharged from the drainage channel on the circumferential side wall of the riveting head, so that the riveting head is covered and lubricated with lubricating oil. When riveting with the workpiece, it can effectively reduce friction and improve the service life of the riveting head. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the riveting machine body of this utility model;

[0013] Figure 3 This is a cross-sectional view of the riveting head assembly of this utility model.

[0014] In the diagram: 1-Riveting machine body, 2-Hydraulic cylinder, 3-Riveting head assembly, 4-Liquid pump, 11-Base, 12-Riveting bottom mold, 13-L-shaped frame, 31-Fixing column, 311-Settling tank, 32-Riveting head, 321-Through hole, 322-Drainage channel, 33-Telescopic column, 331-Conical boss, 332-Liquid guiding groove, 34-Spring, 35-Stop screw, 36-Liquid inlet pipe, 37-Hose. Detailed Implementation

[0015] Example 1

[0016] like Figures 1 to 3 As shown, the novel riveting device of this utility model adopts the following technical solution: It includes a riveting machine body 1, which includes a base 11. A riveting bottom mold 12 is formed at the center of the upper surface of the base 11. An L-shaped frame 13 is fixedly installed upwards at the middle of the rear side wall of the base 11. A hydraulic cylinder 2 is installed on the horizontal arm of the L-shaped frame 13. The telescopic shaft of the hydraulic cylinder 2 passes through the horizontal arm of the L-shaped frame 13. The lower end of the telescopic shaft of the hydraulic cylinder 2 is fixedly connected to a riveting head assembly 3. The riveting head assembly 3 includes a fixing post 31. A countersunk groove 311 is formed upwards at the center of the lower end face of the fixing post 31. A thread is formed at the opening of the countersunk groove 311. A riveting head 32 is screwed into the thread. Through holes 321 are formed through the upper and lower end faces of the riveting head 32. A drainage channel 322 is formed obliquely downwards on the inner side wall of the through hole 321 directly opposite the upper end of the liquid guiding groove 332. The lower end of the drainage channel 322 is located at the riveting... At the lower end of the head 32, where the conical head connects to the column, three sets of drainage channels 322 are arranged circumferentially around the circumferential sidewall of the riveting head 32. The upper end of the through hole 321 is a conical opening, which matches the lower conical surface of the conical boss 331. A telescopic column 33 is movably inserted into the through hole 321. The length of the telescopic column 33 is equal to the distance from the top of the countersink 311 to the bottom of the riveting head 32. A conical section is formed in the middle of the telescopic column 33. A tapered boss 331 is provided, and a spring 34 is fitted on the telescopic column at the upper end of the tapered boss 331. A liquid guiding groove 332 is provided on the circumferential side wall of the telescopic column at the lower end of the tapered boss 331. A stop screw 35 is screwed into a hole on one side of the part where the fixed column 31 is combined with the rivet head 32. An inlet pipe 36 is provided on the right side wall of the upper part of the settling tank 311. The inlet pipe 36 is connected to the discharge pipe of the liquid pump 4 installed under the horizontal arm of the L-shaped frame 13 through a hose 37.

[0017] The working principle of this utility model is as follows: When riveting aluminum alloy plates, the stacked aluminum alloy plates are placed on the base 11, so that the riveting position is aligned with the riveting die 12. By controlling the hydraulic cylinder 2 to move downward, the riveting head 32 at the lower end of the riveting head assembly 3 is driven to press against the aluminum alloy part. During the pressing process, the telescopic column 33 at the lower end of the riveting head 32 first contacts the aluminum alloy part. After being pressed, the telescopic column 33 moves upward, thereby pressing the spring 34, so that the conical boss 331 on the telescopic column 33 contacts the through hole 321 of the riveting head 32. A gap is created between the upper conical surfaces, allowing the lubricant in the groove 311 of the fixed column to flow through the gap into the gap between the liquid guiding groove 332 and the through hole 321 of the telescopic column 33. The lubricant then flows out through the drainage channel 322 on the circumferential side wall of the riveting head 32, covering and wetting the surface of the riveting head 32 that is about to contact the workpiece. Each time the riveting is pressed down, a certain amount of lubricating oil is injected into the groove 311 of the fixed column 31 by the liquid pump 4, thereby reducing the friction between the riveting head 32 and the workpiece during the riveting process and extending its service life.

[0018] Electrical connection methods or structures not described in detail in this article are existing technologies.

[0019] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A novel riveting device, comprising a riveting machine body (1), the riveting machine body (1) comprising a base (11), a riveting bottom mold (12) being formed at the center of the upper surface of the base (11), an L-shaped frame (13) being fixedly mounted upwards at the middle part of the rear side wall of the base (11), a hydraulic cylinder (2) being mounted on the horizontal arm of the L-shaped frame (13), the telescopic shaft of the hydraulic cylinder (2) passing through the horizontal arm of the L-shaped frame (13), and a riveting head assembly (3) being fixedly connected to the lower end of the telescopic shaft of the hydraulic cylinder (2), characterized in that: The riveting head assembly (3) includes a fixed post (31). A countersunk groove (311) is formed at the center of the lower end face of the fixed post (31). A thread is formed at the opening of the countersunk groove (311). A riveting head (32) is screwed into the thread. A through hole (321) is formed through the upper and lower end faces of the riveting head (32). A telescopic post (33) is movably inserted into the through hole (321). A conical boss (331) is formed in the middle part of the telescopic post (33). A spring (34) is fitted on the telescopic post at the upper end of the conical boss (331). A liquid guiding groove (332) is formed on the circumferential side wall of the telescopic post at the lower end of the conical boss (331).

2. The novel riveting device according to claim 1, characterized in that: The upper end of the through hole (321) is a conical opening, which matches the lower conical surface of the conical boss (331).

3. The novel riveting device according to claim 1, characterized in that: The length of the telescopic column (33) is equal to the distance from the top of the sinker (311) to the bottom of the riveting head (32).

4. The novel riveting device according to claim 1, characterized in that: The inner wall of the through hole (321) directly opposite the upper end of the liquid guiding groove (332) is provided with a drainage channel (322) at an angle downward. The lower end of the drainage channel (322) is located at the part where the lower end cone of the riveting head (32) is connected to the column. The drainage channel (322) is arranged in three sets around the circumferential side wall of the riveting head (32).

5. A novel riveting device according to claim 1, characterized in that: A stop screw (35) is screwed into a hole on one side of the part where the fixed post (31) and the rivet head (32) are joined.

6. A novel riveting device according to claim 1, characterized in that: The upper right side wall of the settling tank (311) has an outward opening of the liquid inlet pipe (36), which is connected to the discharge pipe of the pump (4) installed under the horizontal arm of the L-shaped frame (13) through a hose (37).

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