Press-fit device for rivets

Abstract

This utility model discloses a pressing device for rivet bolts, including a guide frame (1). Multiple pressing blocks (2) arranged in a ring are provided on the inner side of the guide frame (1). The pressing blocks (2) and the guide frame (1) are connected to each other via inclined guide rails (3). Each pressing block (2) has a pressing groove (4) in its center. The pressing grooves (4) of the multiple pressing blocks (2) together form a mold cavity for extruding and molding the rivet bolt. Each pressing block (2) has a sliding rod (5) at its lower end. The sliding rods (5) of the multiple pressing blocks (2) are connected to each other via a push plate (6). The push plate (6) has multiple elongated holes (7) arranged in a ring to accommodate the sliding rods (5). A telescopic rod (8) is connected to the lower end of the push plate (6). This utility model features high pressing efficiency and good pressing stability.

Description

Technical Field

[0001] This utility model relates to an auxiliary processing device for rivet bolts, and more particularly to a pressing device for rivet bolts. Background Technology

[0002] When manufacturing rivet bolts, the rivet and sleeve need to be machined separately first, and then pressed together firmly by compression. Currently, the pressing method for the rivet and sleeve involves interlocking the rivet and sleeve, then clamping the outer wall of the sleeve using a three-jaw chuck. The inner walls of each jaw form a groove that fits the sleeve, causing the outer wall of the sleeve to plastically deform as the jaws tighten. Simultaneously, the inner wall of the sleeve and the rivet interlock mechanically.

[0003] However, this pressing method has its drawbacks. On the one hand, the three-jaw chuck uses the rotation of the spiral disc to drive the jaws to perform the clamping action, which makes the clamping action of the jaws relatively time-consuming and the pressing efficiency low. On the other hand, since the jaws of the three-jaw chuck do not have a corresponding limiting mechanism during the pressing process, the rivets and sleeves are prone to problems of incomplete or excessive pressing, thereby reducing the yield of rivet bolts.

[0004] Therefore, the existing pressing methods for rivets and sleeves have problems such as low pressing efficiency and poor pressing stability. Utility Model Content

[0005] The purpose of this invention is to provide a pressing device for rivet bolts. It features high pressing efficiency and good pressing stability.

[0006] The technical solution of this utility model: a pressing device for rivet bolts, including a guide frame, with multiple pressing blocks arranged in a ring on the inner side of the guide frame. The pressing blocks and the guide frame are connected to each other by an inclined guide rail. Each pressing block has a pressing groove in the middle. The pressing grooves of multiple pressing blocks form a mold cavity for extruding and molding the rivet bolt after being surrounded. Each pressing block has a sliding rod at the lower end. The sliding rods of multiple pressing blocks are connected to each other by a push plate. The push plate has multiple elongated holes arranged in a ring to match the sliding rods. The lower end of the push plate is connected to a telescopic rod.

[0007] In the aforementioned rivet bolt pressing device, the upper end of the guide frame is detachably connected to a cover plate, and the lower end of the guide frame is detachably connected to a base.

[0008] In the aforementioned rivet bolt pressing device, there are multiple guide frames arranged in a ring. The upper ends of the multiple guide frames are connected to each other via cover plates, and the lower ends of the multiple guide frames are connected to each other via bases. The top of the base is connected to the guide frames via stepped grooves.

[0009] The aforementioned rivet bolt pressing device also includes a mounting platform, with screws connecting the mounting platform to the periphery of the base and the mounting platform being detachably connected to the middle of the telescopic rod.

[0010] In the aforementioned rivet bolt pressing device, one side of the guide rail is fastened to the guide frame and connected to the guide frame by screws, and the other side of the guide rail extends to the outside of the guide frame and forms a plug-in part. The side wall of the pressing block is fastened to the plug-in part by a slot.

[0011] In the aforementioned rivet bolt pressing device, one end of the slide rod is threadedly connected to the pressure block, and the other end of the slide rod passes through the elongated hole, passes through the push plate, and is connected to a nut.

[0012] Compared with the prior art, this utility model has the following characteristics:

[0013] (1) Through the structural cooperation of the telescopic rod, the push plate and the slide rod, the telescopic rod can drive each pressure block to rise and fall after it is extended and retracted; through the structural cooperation of the guide frame, the guide rail and the pressure block, the pressure block can open outward or tighten inward as it rises and falls, thereby achieving the pressing and fixing of the rivet and the sleeve through clamping; when the pressure block is pressed in place, each pressure block will stick together to form a jam, thereby achieving the limiting function of the pressure block, ensuring that the pressing is in place while avoiding damage caused by excessive pressing, thus improving the pressing stability of the rivet and the sleeve of this utility model;

[0014] (2) With the above cooperation, the present invention can achieve the pressing and fixing of rivets and sleeves by only one pushing operation of the push plate, thereby effectively improving the pressing efficiency compared with the existing three-jaw chuck pressing method, and making it convenient for operators to install and remove rivet bolts.

[0015] (3) By limiting the connection structure of the guide frame, on the one hand, the difficulty of processing and installing the guide frame and pressure block can be reduced for the manufacturer, and on the other hand, the guide frame can be positioned by the cooperation of the base and the cover plate, thereby improving the positioning accuracy and movement stability of each pressure block during installation.

[0016] Therefore, this utility model has the characteristics of high pressing efficiency and good pressing stability. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the present invention in its initial state;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model when it is pressed into place;

[0019] Figure 3 It is a cross-sectional view of the guide frame, guide rail and pressure block at the connection.

[0020] The markings in the attached diagram are as follows: 1-guide frame, 2-pressure block, 3-guide rail, 4-pressing groove, 5-slide rod, 6-push plate, 7-elongated hole, 8-telescopic rod, 9-cover plate, 10-base, 11-step groove, 12-mounting platform, 201-slot, 301-plug-in part. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example. A crimping device for rivet bolts, configured as follows: Figure 1 As shown, the device includes a guide frame 1, with multiple ring-shaped pressure blocks 2 arranged on the inner side of the guide frame 1. The pressure blocks 2 and the guide frame 1 are connected to each other by an inclined guide rail 3. Each pressure block 2 has a pressing groove 4 in the middle. The pressing grooves 4 of the multiple pressure blocks 2 form a mold cavity for extruding and molding rivet bolts after being enclosed. Each pressure block 2 has a sliding rod 5 at its lower end. The sliding rods 5 of the multiple pressure blocks 2 are connected to each other by a push plate 6. The push plate 6 has multiple elongated holes 7 arranged in a ring to match the sliding rods 5. The lower end of the push plate 6 is connected to a telescopic rod 8, which can be a cylinder or an electric push rod.

[0023] The upper end of the guide frame 1 is detachably connected to a cover plate 9, and the lower end of the guide frame 1 is detachably connected to a base 10. The cover plate 9, the guide frame 1 and the base 10 are connected to each other by screws. The middle part of the base 10 is provided with an opening to accommodate the push plate 6 and the telescopic rod 8.

[0024] The guide frames 1 are multiple and arranged in a ring. Adjacent guide frames 1 are fitted together. The upper ends of the multiple guide frames 1 are connected to each other via cover plates 9. The lower ends of the multiple guide frames 1 are connected to each other via bases 10. The top of the bases 10 is fastened to the guide frames 1 via stepped grooves 11.

[0025] It also includes a mounting platform 12, with screws connecting the base 10 to the mounting platform 12 around its perimeter and the telescopic rod 8 to the mounting platform 12 in the middle.

[0026] One side of the guide rail 3 is fastened to the guide frame 1 and connected to the guide frame 1 by screws. The other side of the guide rail 3 extends to the outside of the guide frame 1 and forms a T-shaped insertion part 301. The side wall of the pressure block 2 is fastened to the insertion part 301 via a slot 201. The guide rail 3 is used to guide the pressure block 2, so that the pressure block 2 tilts and slides along the guide rail 3 as the push plate 6 rises and falls.

[0027] One end of the slide rod 5 is threaded to the pressure block 2, and the other end of the slide rod 5 passes through the elongated hole 7 and is connected to the push plate 6. During the sliding process, the slide rod 5 moves laterally with the pressure block 2 in the elongated hole 7.

[0028] The working principle of this utility model is as follows: When the pressing device is in its initial state, the push plate 6 is in a low position and limits each pressing block 2, causing the pressing blocks 2 to separate from each other, and the pressing groove 4 is in an open state. When it is necessary to press the rivet and sleeve, the operator places the rivet and sleeve into the pressing groove 4 after they are interlocked. Then, the telescopic rod 8 pushes the push plate 6, so that the push plate 6 applies an upward pressing force to each pressing block 2 after pushing. After being subjected to the upward pressing force, the pressing block 2 slides upward along the guide rail 3, and the pressing groove 4 tightens inward during the sliding process, thereby realizing the pressing action of the rivet and sleeve. During the pressing process, the operator holds the end of the rivet to prevent the rivet and sleeve from shifting in the pressing groove 4. When each pressure block 2 slides to fit together, the pressing grooves 4 on each pressure block 2 surround each other and complete the compression and fixing of the rivet bolt; then the telescopic rod 8 drives the push plate 6 to descend, and the push plate 6 applies downward pressing force to the pressure block 2 through the slide rod 5, so that each pressure block 2 slides back to its original position. At the same time, the pressing grooves 4 separate from the rivet bolt as the pressure block 2 slides, completing one clamping action of the rivet bolt.

Claims

1. A pressing device for rivet bolts, characterized in that: Includes a guide frame (1), with multiple ring-shaped pressure blocks (2) on the inner side of the guide frame (1). The pressure blocks (2) and the guide frame (1) are connected to each other by an inclined guide rail (3). Each pressure block (2) has a pressing groove (4) in the middle. The pressing grooves (4) of multiple pressure blocks (2) form a mold cavity for extruding and molding rivet bolts after being enclosed. Each pressure block (2) has a sliding rod (5) at the lower end. The sliding rods (5) of multiple pressure blocks (2) are connected to each other by a push plate (6). The push plate (6) has multiple elongated holes (7) that match the sliding rods (5) in a ring. The lower end of the push plate (6) is connected to a telescopic rod (8).

2. The pressing device for rivet bolts according to claim 1, characterized in that: The upper end of the guide frame (1) is detachably connected to a cover plate (9), and the lower end of the guide frame (1) is detachably connected to a base (10).

3. The pressing device for rivet bolts according to claim 2, characterized in that: The guide frame (1) is a plurality of them and is arranged in a ring. The upper ends of the plurality of guide frames (1) are connected to each other by cover plate (9), and the lower ends of the plurality of guide frames (1) are connected to each other by base (10). The top of the base (10) is fastened to the guide frame (1) by step groove (11).

4. The pressing device for rivet bolts according to claim 2, characterized in that: It also includes a mounting platform (12), which is screwed around the base (10) and is detachably connected to the mounting platform (12) in the middle of the telescopic rod (8).

5. The pressing device for rivet bolts according to claim 2, characterized in that: One side of the guide rail (3) is fastened to the guide frame (1) and connected to the guide frame (1) by screws. The other side of the guide rail (3) extends to the outside of the guide frame (1) and forms a plug-in part (301). The side wall of the pressure block (2) is fastened to the plug-in part (301) via a slot (201).

6. The pressing device for rivet bolts according to claim 1, characterized in that: One end of the slide rod (5) is threaded to the pressure block (2), and the other end of the slide rod (5) passes through the elongated hole (7) through the push plate (6) and is connected to a nut.

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