Pin shaft high-frequency automatic heating red riveting tool

Abstract

The utility model relates to pin shaft hot riveting tool technical field, concretely is a kind of pin shaft high-frequency automatic heating red riveting tool, including pin shaft blank, thermoplastic pressure-bearing mechanism and hot riveting pressure-increasing mechanism, and hot riveting pressure-increasing mechanism is installed on thermoplastic pressure-bearing mechanism, and pin shaft blank is clamped in thermoplastic pressure-bearing mechanism and hot riveting pressure-increasing mechanism inside;Thermoplastic pressure-bearing mechanism includes bearing frame, the inside fixed mounting of bearing frame has backing plate, the top fixed mounting of backing plate has base. By the device is set in the feeding end and discharge end of inductive heat treatment device, when blank is placed between first clamping lever and second clamping lever and is transferred to inductive heat treatment device inside, after obtaining heat-treated blank is transversely pushed to the inside of two compression rod sleeves by first clamping lever and second clamping lever, the blank is quickly hot riveted plastic by the further pressurization of limiting sleeve, to avoid the problem of oxidation carbonization of heat-treated blank during transfer period to contact oxygen.

Description

Technical Field

[0001] This utility model relates to the field of hot riveting fixtures for pin shafts, specifically a high-frequency automatic heating hot riveting fixture for pin shafts. Background Technology

[0002] Heated riveting of pins, also known as hot riveting, involves heating the pin connection area to achieve plastic deformation or melting. This utilizes the high-temperature plasticity to reduce the riveting force required. As the pin shank shrinks during cooling, it can enhance the connection strength. It is mainly used in applications where the rivet diameter is large or the material has poor plasticity.

[0003] After heat treatment, the diameter of the protruding end of the pin blank needs to be hot-riveted according to the application requirements. The existing tooling for shaping the protruding end of the pin has certain drawbacks in actual use. After the heat-treated blank is inserted into the tooling hole, it needs to be shaped by an external pressure mechanism. However, this process requires the blank to be taken out from the heat treatment device and transferred to the tooling. During the transfer process, a large amount of carbon oxide deposits will appear on the outer surface of the blank. During the shaping process, the carbon oxide deposits will cause damage to the surface of the blank.

[0004] In view of this, a high-frequency automatic heating red riveting fixture for pin shafts was designed to solve the above problems. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is as follows: A high-frequency automatic heating and riveting fixture for pin shafts includes a pin shaft blank, a thermoplastic pressure-bearing mechanism, and a hot riveting pressure-boosting mechanism. The hot riveting pressure-boosting mechanism is mounted on the thermoplastic pressure-bearing mechanism, while the pin shaft blank is clamped within both the thermoplastic pressure-bearing mechanism and the hot riveting pressure-boosting mechanism. The thermoplastic pressure-bearing mechanism includes a load-bearing frame, a pad fixedly installed inside the load-bearing frame, a base fixedly installed on the top of the pad, and two symmetrically distributed anti-compression rod sleeves installed on the inner side of the base. A first clamping rod is movably installed within the two anti-compression rod sleeves, and the outer end of the first clamping rod is fixedly mounted... The system includes a first gasket, a first tension spring between the first gasket and the base, a shaft support movably mounted inside the gasket, and a hydraulic component installed inside the shaft support. The hot riveting pressurization mechanism includes a traction frame movably mounted outside the load-bearing frame, with the bottom end of the traction frame movably mounted on a hydraulic sub-rod inside the hydraulic component. A horizontally positioned limiting sleeve is fixedly mounted at the top end of the traction frame, a second clamping rod is movably mounted inside the limiting sleeve, a second gasket is fixedly mounted at the outer end of the second clamping rod, and a second tension spring is provided between the second gasket and the limiting sleeve.

[0007] In a preferred embodiment, the present invention can be further configured as follows: a clamping plate is fixedly installed on the anti-compression rod sleeve, a bidirectional screw is movably installed in the plate segment of the base, a bracket is threaded on the bidirectional screw, two lever arms are movably installed on the bracket, and the other end of the lever arms is movably installed on the clamping plate.

[0008] In a preferred embodiment, the present invention can be further configured as follows: two sliding grooves are provided inside the base, and springs are fixedly installed on the inner walls of the sliding grooves; a compression spring is inserted into the anti-compression rod sleeve, and the compression spring is adapted to pass through the sliding groove inside the base; the other end of the spring is fixedly connected to the compression spring.

[0009] In a preferred embodiment, the present invention can be further configured such that: both the first clamping rod and the second clamping rod are T-shaped structures, and the diameter of the adjacent ends of the first clamping rod and the second clamping rod is the same as the diameter of the pin blank.

[0010] In a preferred embodiment, the present invention can be further configured such that: a rectangular slot is provided at the outer end of the anti-compression rod sleeve, and the plate end of the base is adapted to penetrate into the rectangular slot.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: 1. This utility model, by setting the device at the feed end and discharge end of the induction heat treatment device, when the billet is placed between the first clamping rod and the second clamping rod and transferred into the induction heat treatment device, the heat-treated billet is pushed horizontally into the two anti-compression sleeves by the first clamping rod and the second clamping rod. The limiting sleeve, which is further pressurized, will quickly hot rivet and shape the billet, thereby avoiding the problem of oxidation and carbon buildup caused by the heat-treated billet coming into contact with oxygen during the transfer. Attached Figure Description

[0012] Figure 1 This is a schematic diagram illustrating the use of this utility model; Figure 2 This is a schematic diagram of the thermoplastic pressure-bearing mechanism of this utility model; Figure 3 This utility model Figure 2 An explosion diagram; Figure 4 This is a schematic diagram of the hot riveting and pressurization mechanism of this utility model.

[0013] Figure label: 100. Pin blank; 200. Thermoplastic pressure bearing mechanism; 210. Load-bearing frame; 220. Pad; 2201. Shaft support; 230. Hydraulic component; 240. Base; 2401. First clamping rod; 2402. First washer; 2403. First tension spring; 2404. Spring; 250. Anti-compression rod sleeve; 2501. Clamping plate; 2502. Lever arm; 2503. Bracket; 2504. Compression spring; 260. Double-acting lead screw; 300. Hot riveting and pressurization mechanism; 310. Traction frame; 320. Limiting sleeve; 3201. Second clamping rod; 3202. Second washer; 330. Second tension spring. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0015] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0016] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a high-frequency automatic heating red riveting fixture for pin shafts.

[0017] Example 1: Combination Figures 1 to 4 As shown, the present invention provides a high-frequency automatic heating riveting fixture for pins, including a pin blank 100, a thermoplastic pressure bearing mechanism 200, and a hot riveting pressure boosting mechanism 300. The hot riveting pressure boosting mechanism 300 is installed on the thermoplastic pressure bearing mechanism 200, and the pin blank 100 is clamped in the thermoplastic pressure bearing mechanism 200 and the hot riveting pressure boosting mechanism 300. The thermoplastic pressure bearing mechanism 200 cooperates with the hot riveting pressure boosting mechanism 300 to perform hot riveting shaping on the heat-treated pin blank 100.

[0018] The thermoplastic pressure bearing mechanism 200 includes a load-bearing frame 210, a pad 220 fixedly installed inside the load-bearing frame 210, a base 240 fixedly installed on the top of the pad 220, two symmetrically distributed anti-compression rod sleeves 250 installed on the inner side of the base 240, a first clamping rod 2401 movably installed inside the two anti-compression rod sleeves 250, a first gasket 2402 fixedly installed on the outer end of the first clamping rod 2401, a first tension spring 2403 provided between the first gasket 2402 and the base 240, a shaft support 2201 movably installed inside the pad 220, and a hydraulic component 230 installed inside the shaft support 2201; The hot riveting pressurization mechanism 300 includes a traction frame 310 movably installed outside the load-bearing frame 210, and the bottom end of the traction frame 310 is movably installed on the hydraulic sub-rod inside the hydraulic component 230. A horizontally placed limiting sleeve 320 is fixedly installed at the top end of the traction frame 310. A second clamping rod 3201 is movably installed inside the limiting sleeve 320. A second gasket 3202 is fixedly installed at the outer end of the second clamping rod 3201. A second tension spring 330 is provided between the second gasket 3202 and the limiting sleeve 320.

[0019] In use, the hot riveting pressurizing mechanism 300 is set at the feed end of the induction heat treatment device and the thermoplastic pressure bearing mechanism 200 is set at the discharge end of the induction heat treatment device. Then, the pin blank 100 is delivered to the gap between the first clamping rod 2401 and the second clamping rod 3201 until both ends of the pin blank 100 are clamped by the first clamping rod 2401 and the second clamping rod 3201. After the pin blank 100 is heat treated, the heat-treated pin blank 100 can be inserted into the two pressure-resistant rod sleeves 250 without the need for multi-stroke transfer. As the hydraulic component 230 operates, its internal hydraulic sub-rod will drive the traction frame 310 and the limiting sleeve 320 to move closer to the two anti-compression sleeves 250. Finally, the pin blank 100 after being clamped can be subjected to hot riveting and shaping treatment of the two anti-compression sleeves 250 and the limiting sleeve 320.

[0020] Example 2: Combination Figure 3 and Figure 4 As shown, in the above embodiment, a clamping plate 2501 is fixedly installed on the compression sleeve 250, a bidirectional screw 260 is movably installed in the plate segment of the base 240, a bracket 2503 is threaded on the bidirectional screw 260, two lever arms 2502 are movably installed on the bracket 2503, and the other end of the lever arm 2502 is movably installed on the clamping plate 2501. The base 240 has two sliding grooves inside, and springs 2404 are fixedly installed on the inner wall of the sliding grooves. A compression spring 2504 is inserted into the compression rod sleeve 250, and the compression spring 2504 is adapted to pass through the sliding groove inside the base 240. The other end of the spring 2404 is fixedly connected to the compression spring 2504. The first clamping rod 2401 and the second clamping rod 3201 are both T-shaped structures, and the diameter of the adjacent ends of the first clamping rod 2401 and the second clamping rod 3201 is the same as the diameter of the pin blank 100. The outer end of the compression sleeve 250 is provided with a rectangular slot, and the plate end of the base 240 is adapted to pass through the rectangular slot.

[0021] Preferably, the inner wall of the anti-compression rod sleeve 250 is provided with a semi-circular protrusion, and the semi-circular protrusion on the inner wall of the anti-compression rod sleeve 250 is used to provide anti-detachment protection for the inner end of the first clamping rod 2401. After the first pad 2402 is elastically pulled by the first tension spring 2403, the inner end of the first clamping rod 2401 will extend out from the inner cavity of the two anti-compression rod sleeves 250. When the second pad 3202 is elastically pulled by the second tension spring 330, the inner end of the second clamping rod 3201 will also extend out from the inner cavity of the limiting sleeve 320. After the horizontally positioned pin blank 100 is positioned and clamped by the first clamping rod 2401 and the second clamping rod 3201, the horizontally positioned pin blank 100 can be centrally heat treated. As the hydraulic sub-rod in the hydraulic component 230 retracts and drives the traction frame 310 to move laterally toward the two anti-compression rod sleeves 250, the clamped pin blank 100 will be quickly pushed out from the inside of the induction heat treatment device. Finally, the pushed-out pin blank 100 will be quickly inserted into the inner cavity of the two anti-compression rod sleeves 250. This process can reduce the transfer stroke and reduce the damage caused by carbon oxide deposits on the surface of the pin blank 100 to its hot riveting and shaping.

[0022] The working principle and usage process of this utility model are as follows: The load-bearing frame 210 is fixedly installed on the workbench with bolts until the load-bearing frame 210 is parallel to the two anti-compression rod sleeves 250. Then, the hydraulic component 230 is operated until the hydraulic subrod inside the hydraulic component 230 extends outward. The outer end of the hydraulic subrod will push the traction frame 310 and the limiting sleeve 320 to move outward laterally until the maximum gap is exposed between the limiting sleeve 320 and the two anti-compression rod sleeves 250. Then, the heat-treated pin blank 100 is delivered into the gap between the limiting sleeve 320 and the two anti-pressure rod sleeves 250 until both ends of the pin blank 100 are aligned with the end holes of the limiting sleeve 320 and the two anti-pressure rod sleeves 250. Then, the hydraulic component 230 is operated. As the hydraulic rod inside the hydraulic component 230 contracts and drives the traction frame 310 to reset and contract, the pin blank 100, which is positioned and clamped by the first clamping rod 2401 and the second clamping rod 3201, will be delivered into the inner cavity of the two anti-pressure rod sleeves 250. Finally, the limiting sleeve 320 will cooperate with the two anti-pressure rod sleeves 250 to perform hot riveting on the inserted and heat-treated pin blank 100.

[0023] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-frequency automatic heating red-riveting fixture for pins, comprising a pin blank (100), characterized in that, It also includes a thermoplastic pressure bearing mechanism (200) and a hot riveting pressure boosting mechanism (300), with the hot riveting pressure boosting mechanism (300) mounted on the thermoplastic pressure bearing mechanism (200), and the pin blank (100) clamped inside the thermoplastic pressure bearing mechanism (200) and the hot riveting pressure boosting mechanism (300); The thermoplastic pressure bearing mechanism (200) includes a load-bearing frame (210), a pad (220) is fixedly installed inside the load-bearing frame (210), a base (240) is fixedly installed on the top of the pad (220), two symmetrically distributed anti-compression rod sleeves (250) are installed on the inner side of the base (240), a first clamping rod (2401) is movably installed in the two anti-compression rod sleeves (250), a first gasket (2402) is fixedly installed on the outer end of the first clamping rod (2401), a first tension spring (2403) is provided between the first gasket (2402) and the base (240), a shaft support (2201) is movably installed in the pad (220), and a hydraulic component (230) is installed in the shaft support (2201).

2. The high-frequency automatic heating red-riveting fixture for pin shafts according to claim 1, characterized in that, The hot riveting pressurization mechanism (300) includes a traction frame (310) movably installed outside the load-bearing frame (210), and the bottom end of the traction frame (310) is movably installed on the hydraulic sub-rod inside the hydraulic component (230). A horizontally placed limiting sleeve (320) is fixedly installed at the top end of the traction frame (310). A second clamping rod (3201) is movably installed inside the limiting sleeve (320). A second gasket (3202) is fixedly installed at the outer end of the second clamping rod (3201). A second tension spring (330) is provided between the second gasket (3202) and the limiting sleeve (320).

3. The high-frequency automatic heating red-riveting fixture for pin shafts according to claim 1, characterized in that, A clamping plate (2501) is fixedly installed on the anti-compression rod sleeve (250). A bidirectional screw rod (260) is movably installed in the plate section of the base (240). A bracket (2503) is threaded on the bidirectional screw rod (260). Two lever arms (2502) are movably installed on the bracket (2503), and the other end of the lever arm (2502) is movably installed on the clamping plate (2501).

4. The high-frequency automatic heating red-riveting fixture for pin shafts according to claim 1, characterized in that, The base (240) has two sliding grooves inside, and springs (2404) are fixedly installed on the inner walls of the sliding grooves. A compression spring (2504) is inserted into the anti-compression rod sleeve (250), and the compression spring (2504) is adapted to pass through the sliding groove inside the base (240). The other end of the spring (2404) is fixedly connected to the compression spring (2504).

5. The high-frequency automatic heating red-riveting fixture for pin shafts according to claim 1, characterized in that, The first clamping rod (2401) and the second clamping rod (3201) are both T-shaped structures, and the diameter of the adjacent ends of the first clamping rod (2401) and the second clamping rod (3201) is the same as the diameter of the pin blank (100).

6. The high-frequency automatic heating red-riveting fixture for pin shafts according to claim 1, characterized in that, The outer end of the compression sleeve (250) is provided with a rectangular slot, and the plate end of the base (240) is adapted to pass through the rectangular slot.

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