A semi-hollow rivet mold

Abstract

This utility model discloses a semi-hollow rivet mold, relating to the field of rivet mold technology. It includes: a support platform, a column fixed to the top of the support platform, a lifting plate sliding on the outside of the column, and mounting slots on the top of both the support platform and the lifting plate; and a mold changing assembly. This utility model uses a servo motor to drive a lower rotating seat connected to it to rotate at a certain angle, rotating the lower mold corresponding to the rivet model to the top of the support platform. When the lower rotating seat rotates, it drives a corresponding driven bevel gear to rotate via a connecting column and a main bevel gear. The driven bevel gear, through an adjustable connecting rod, drives another driven bevel gear and the main bevel gear to rotate, thus causing the upper and lower rotating seats to rotate synchronously by the same angle. This allows the upper and lower molds to be adjusted to the correct position for use simultaneously, eliminating the need for laborious and time-consuming mold changes to produce different rivet models. It also reduces downtime and helps improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rivet mold technology, specifically to a semi-hollow rivet mold. Background Technology

[0002] Semi-hollow rivets are a special type of rivet characterized by their hollow structure, either partially or completely hollow. They are typically used to connect two or more components and feature a hollow design with heads at one or both ends (common shapes include flat heads, round heads, or special head shapes for ease of assembly and aesthetics). Common materials include aluminum alloys, steel, stainless steel, and copper. Common types include hollow rivets (such as spring hollow rivets), self-drilling and self-tapping semi-hollow rivets, or semi-hollow rivets with special head shapes. Semi-hollow rivet molds are used to manufacture specific shapes of semi-hollow rivets through pressing or plastic deformation.

[0003] A document with publication number CN209424524U discloses a rapid cooling rivet mold with spiral grooves, including an upper template, a lower template, an upper mold, and a lower mold. The upper mold is fixed to the lower end of the upper template. A circular guide groove is provided at the top of the upper template, extending downwards to the interior of the upper template where a double "T"-shaped air cooling groove is provided. A spiral cooling groove is provided between the lower mold and the lower template, with its bottom communicating with a water storage tank. An inlet pipe and an outlet pipe are provided on one side of the water storage tank. The double "T"-shaped air cooling groove on the upper template enhances the overall strength of the mold, making it less prone to deformation during pressing and improving the overall service life of the mold. The water storage tank on the lower template, with its inlet and outlet pipes, allows for timely replacement of cooling water, improving the cooling effect and enhancing the overall quality of the rivet. The spiral cooling groove on the lower template, connected to the water storage tank, provides a large cooling area and better cooling effect.

[0004] The aforementioned molds require disassembly and replacement when producing different models of semi-hollow rivets. This involves disassembly and installation steps, which are cumbersome and cause significant downtime, affecting production efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a semi-hollow rivet mold, which solves the problem that existing semi-hollow rivet molds require disassembly and replacement when producing different models of semi-hollow rivets. This involves disassembly and installation steps, which are cumbersome and cause significant downtime, affecting production efficiency.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: a semi-hollow rivet mold, comprising:

[0007] A support platform, the top of which is fixed with a column, and a lifting plate that slides on the outside of the column. Both the top of the support platform and the top of the lifting plate are provided with mounting grooves.

[0008] A mold changing assembly is disposed between two mounting slots. The mold changing assembly includes an upper rotating seat and a lower rotating seat, which rotate on the inner sides of the two mounting slots respectively. A servo motor is fixed to the front of the lower rotating seat. The outer surface of the upper rotating seat is provided with at least three upper grooves, and the outer surface of the lower rotating seat is provided with at least three lower grooves. An upper mold is fixed to the inner side of the upper groove, and a lower mold is fixed to the inner side of the lower groove. A connecting component is provided between the upper rotating seat and the lower rotating seat.

[0009] Preferably, the connecting component includes two connecting columns fixed to the outer surfaces of the upper rotating seat and the lower rotating seat respectively, and an adjustable connecting rod disposed between the upper rotating seat and the lower rotating seat via a fixing ring. Both ends of the adjustable connecting component are fixed with a driven bevel gear, and one end of each of the two connecting columns is fixed with a main bevel gear. The two main bevel gears mesh with the two driven bevel gears respectively.

[0010] Preferably, the adjustable connecting rod includes an inner slot connecting cylinder fixed to the outer surface of the support platform by a connecting ring and a connecting rod fixed to the outer surface of the lifting plate by a fixing ring. A hollow slot cylinder slides inside the inner slot connecting cylinder, and one end of the connecting rod slides inside the hollow slot cylinder by two locking blocks.

[0011] Preferably, the upper rotating seat has an inner cavity, and a tube is fixed inside the inner cavity. At least three injection tubes are provided on the outer surface of the tube. One end of the injection tube is connected to the mold cavity of the upper mold, and one end of the tube extends to the outside of the lifting plate.

[0012] Preferably, the lifting plate is provided with a rotary joint on its exterior, and one end of the tube body is connected to one end of the rotary joint.

[0013] Preferably, a fixing plate is fixed to one end of the column, a hydraulic cylinder is fixed to the top of the fixing plate, a connecting frame is fixed to the top of the lifting plate, and one end of the hydraulic cylinder telescopic rod extends to the bottom of the fixing plate and is fixed to the top of the connecting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] A servo motor drives the lower rotating seat connected to it to rotate at a certain angle, rotating the lower mold of the corresponding model for rivet production to the top of the support platform. When the lower rotating seat rotates, it drives a corresponding slave bevel gear to rotate through the connecting column and the main bevel gear. The slave bevel gear drives another slave bevel gear and the main bevel gear to rotate through the adjustable connecting rod, so that the upper rotating seat and the lower rotating seat rotate synchronously at the same angle. This allows the upper mold and the lower mold of the corresponding model to be adjusted into place at the same time. Different models of rivets can be produced without the need for laborious and time-consuming mold replacement. The downtime is short and helps to improve production efficiency. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a schematic diagram showing the disassembled parts of this utility model;

[0018] Figure 3 This is a cross-sectional view of the mold changing component in this utility model.

[0019] The numbers in the diagram represent:

[0020] 1. Support platform; 2. Column; 3. Lifting plate; 4. Mold changing assembly; 41. Upper rotating seat; 42. Lower rotating seat; 43. Servo motor; 44. Upper groove; 45. Lower groove; 46. Upper mold; 47. Lower mold; 48. Connecting column; 49. Adjustable connecting rod; 491. Inner slot connecting cylinder; 492. Connecting rod; 493. Hollow slot cylinder; 410. Driven bevel gear; 411. Main bevel gear; 5. Inner cavity; 6. Pipe body; 7. Injection pipe; 8. Rotary joint; 9. Fixing plate; 10. Oil cylinder; 11. Connecting frame; 12. Mounting slot. Detailed Implementation

[0021] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.

[0022] This embodiment provides a technical solution: a semi-hollow rivet mold, such as... Figure 1-3 As shown, the assembly includes a support platform 1 and a mold changing component 4. Four columns 2 are fixed to the top of the support platform 1, and a lifting plate 3 slides between the four columns 2. Mounting slots 12 are provided on the top of the support platform 1 and the top of the lifting plate 3. A fixing plate 9 is fixed between one end of the four columns 2. A hydraulic cylinder 10 is fixed to the top of the fixing plate 9. A connecting frame 11 is fixed to the top of the lifting plate 3. One end of the telescopic rod of the hydraulic cylinder 10 extends to the bottom of the fixing plate 9 and is fixed to the top of the connecting frame 11. The telescopic rod of the hydraulic cylinder 10 extends and retracts, driving the connecting frame 11 to rise and fall. The connecting frame 11 will drive the lifting plate 3 to rise and fall vertically on the columns 2.

[0023] The mold changing assembly 4 is disposed between two mounting slots 12. The mold changing assembly 4 includes an upper rotating seat 41 and a lower rotating seat 42, which are respectively rotatable inside the two mounting slots 12. The upper rotating seat 41 has an inner cavity 5, and a tube 6 is fixed inside the inner cavity 5. At least three injection pipes 7 are provided on the outer surface of the tube 6. A valve is provided in the injection pipe 7, and the valve can be a solenoid valve. One end of the injection pipe 7 is connected to the mold cavity of the upper mold 46, and one end of the tube 6 extends to the outside of the lifting plate 3. A rotary joint 8 is provided on the outside of the lifting plate 3. One end of the tube 6 is connected to one end of the rotary joint 8. One end of the rotary joint 8 can be connected to the outside through a hose or a telescopic tube. The injection molding liquid enters the mold cavity of the upper mold 46 sequentially through the rotary joint 8, the tube 6, and the injection pipe 7. A servo motor 43 is fixed on the front of the lower rotating seat 42. At least three upper grooves 44 are provided on the outer surface of the upper rotating seat 41, and at least three lower grooves 45 are provided on the outer surface of the lower rotating seat 42. The number of upper grooves 44, lower grooves 45, and injection pipes 7 are the same. An upper mold 46 with different manufacturing dimensions is fixed on the inner side of each upper groove 44. A lower mold 47 with the same size as the upper mold 46 is fixed on the inner side of each lower groove 45. A connecting component is provided between the upper rotating seat 41 and the lower rotating seat 42.

[0024] The connecting component includes two connecting posts 48 fixed to the outer surfaces of the upper rotating seat 41 and the lower rotating seat 42 respectively, and an adjustable connecting rod 49 disposed between the upper rotating seat 41 and the lower rotating seat 42 via a fixing ring. The adjustable connecting rod 49 includes an inner groove connecting cylinder 491 fixed to the outer surface of the support platform 1 via a connecting ring, and a connecting rod 492 fixed to the outer surface of the lifting plate 3 via a fixing ring. A hollow groove cylinder 493 slides on the inner side of the inner groove connecting cylinder 491. Vertical grooves are formed on both the inner wall of the inner groove connecting cylinder 491 and the inner surface of the hollow groove cylinder 493. The outer surface is provided with a locking strip that matches the slot. The locking strip is locked in the slot to ensure that the sliding of the hollow slot cylinder 493 inside the inner slot connecting cylinder 491 can only be in the vertical direction. One end of the connecting rod 492 slides in two slots on the inner surface of the hollow slot cylinder 493 through two locking blocks to ensure that the sliding of the connecting rod 492 in the hollow slot cylinder 493 can only be in the vertical direction. One end of the inner slot connecting cylinder 491 and one end of the connecting rod 492 are both fixed with a driven bevel gear 410. One end of each of the two connecting columns 48 is fixed with a main bevel gear 411. The two main bevel gears 411 mesh with the two driven bevel gears 410 respectively.

[0025] In use: The extension rod of the hydraulic cylinder 10 extends and pushes down the connecting frame 11. The downward movement of the connecting frame 11 pushes the lifting plate 3, causing the upper rotating seat 41 to move down. The upper rotating seat 41 then causes the upper mold 46 to move down, so that the lowermost upper mold 46 presses down on the uppermost lower mold 47. The valve in the injection pipe 7 corresponding to the upper mold 46 opens, while the valves in the injection pipes 7 corresponding to the other upper molds 46 close. Then, the injection liquid enters the mold cavities of the upper mold 46 and the lower mold 47 sequentially through the rotary joint 8, the pipe body 6, and the injection pipe 7 to form semi-hollow rivets. Subsequently, the extension rod of the hydraulic cylinder 10 retracts, causing the connecting frame 11 and the lifting plate 3 to rise, thereby separating the upper mold 46 and the lower mold 47.

[0026] Based on the required size and model of the semi-hollow rivet, select the corresponding upper mold 46 and rotate it to the bottom of the upper rotating seat 41. At this time, the corresponding lower mold 47 will rotate to the top of the lower rotating seat 42 for use. The servo motor 43 directly drives the lower rotating seat 42 connected to it to rotate by a set angle, rotating the corresponding lower mold 47 to the top of the support platform 1. For example, if four upper molds 46 and lower molds 47 are set, rotating the servo motor 43 90 degrees will swap the positions of two adjacent lower molds 47 and upper molds 46. When the lower rotating seat 42 rotates, it will drive the upper mold 47 to the top of the support platform 1. The connecting column 48 rotates, and the connecting column 48 rotates through the main bevel gear 411 at one end. The main bevel gear 411 drives the adjustable connecting rod 49 to rotate through the meshing driven bevel gear 410, which in turn drives another driven bevel gear 410 and the main bevel gear 411 to rotate. The other main bevel gear 411 drives the upper rotating seat 41 to rotate through the connecting column 48 connected to it. The rotation angle of the lower rotating seat 42 and the upper rotating seat 41 is the same, so that the upper mold 46 and the lower mold 47 can be adjusted to the corresponding model at the same time. It is suitable for the production of various models of semi-hollow rivets without the need to change molds.

[0027] When the lifting plate 3 is raised or lowered, the connecting rod 492 will move vertically in the hollow slot cylinder 493 through the locking block, and the hollow slot cylinder 493 will move vertically in the inner slot connecting cylinder 491, so that the distance between the two driven bevel gears 410 can also change when the distance between the lifting plate 3 and the support platform 1 changes, and always maintain the continuous rotation function of the two driven bevel gears 410.

[0028] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.

Claims

1. A semi-tubular rivet die characterized by, include: A support platform (1) is provided with a column (2) fixed on the top of the support platform (1) and a lifting plate (3) sliding on the outside of the column (2). The top of the support platform (1) and the top of the lifting plate (3) are both provided with mounting grooves (12). A mold changing assembly (4) is disposed between two mounting slots (12). The mold changing assembly (4) includes an upper rotating seat (41) and a lower rotating seat (42). The upper rotating seat (41) and the lower rotating seat (42) rotate on the inner side of the two mounting slots (12), respectively. A servo motor (43) is fixed on the front side of the lower rotating seat (42). At least three upper grooves (44) are provided on the outer surface of the upper rotating seat (41). At least three lower grooves (45) are provided on the outer surface of the lower rotating seat (42). An upper mold (46) is fixed on the inner side of the upper groove (44). A lower mold (47) is fixed on the inner side of the lower groove (45). A connecting member is provided between the upper rotating seat (41) and the lower rotating seat (42).

2. The semi-tubular rivet die of claim 1, wherein, The connecting component includes two connecting columns (48) fixed to the outer surfaces of the upper rotating seat (41) and the lower rotating seat (42) respectively, and an adjustable connecting rod (49) set between the upper rotating seat (41) and the lower rotating seat (42) by a fixing ring. Both ends of the adjustable connecting rod (49) are fixed with a driven bevel gear (410), and one end of each of the two connecting columns (48) is fixed with a main bevel gear (411). The two main bevel gears (411) mesh with the two driven bevel gears (410) respectively.

3. The semi-hollow rivet mold as described in claim 2, characterized in that, The adjustable connecting rod (49) includes an inner slot connecting cylinder (491) fixed to the outer surface of the support platform (1) by a connecting ring and a connecting rod (492) fixed to the outer surface of the lifting plate (3) by a fixing ring. A hollow slot cylinder (493) slides on the inner side of the inner slot connecting cylinder (491), and one end of the connecting rod (492) slides on the inner side of the hollow slot cylinder (493) by two locking blocks.

4. The semi-hollow rivet mold as described in claim 3, characterized in that, The upper rotating seat (41) has an inner cavity (5) inside, and a tube (6) is fixed inside the inner cavity (5). At least three injection tubes (7) are provided on the outer surface of the tube (6). One end of the injection tube (7) is connected to the mold cavity of the upper mold (46), and one end of the tube (6) extends to the outside of the lifting plate (3).

5. The semi-hollow rivet mold as described in claim 4, characterized in that, The lifting plate (3) is provided with a rotary joint (8) on its outside, and one end of the tube (6) is connected to one end of the rotary joint (8).

6. The semi-hollow rivet mold as described in claim 1, characterized in that, One end of the column (2) is fixed with a fixing plate (9), the top of the fixing plate (9) is fixed with a hydraulic cylinder (10), the top of the lifting plate (3) is fixed with a connecting frame (11), and one end of the telescopic rod of the hydraulic cylinder (10) extends to the bottom of the fixing plate (9) and is fixed to the top of the connecting frame (11).

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