High-efficiency and stable multi-point riveting jig

Abstract

The utility model relates to a press -in die technology field especially a kind of high -efficient stable multipoint press -in die, including bottom frame, the left and right sides of bottom frame are all fixedly connected with two symmetrically arranged guide rod, and the sliding connection of several guide rods has top plate.The utility model has the advantages that press-in nut is placed into through hole and is attached to positioning pin top surface, when top plate is pressed down, press rod pushes press-in nut and makes positioning pin compress second spring and move downward, and first spring is synchronously extruded;After press-in is completed, top plate rises back, and second spring drives positioning pin to reset upward, press-in nut is ejected from through hole, and workpiece rapid demolding is realized.The cooperation of positioning pin and through hole realizes workpiece rapid alignment, avoids the cumbersome adjustment of traditional positioning block;Industrial suction cup enhances workpiece stability, prevents displacement when press-in;The reset function of positioning pin assists workpiece demolding, reduces manual pick-up time, overall positioning efficiency and accuracy are improved, and the risk of scrapping caused by positioning deviation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of riveting fixture technology, and in particular to a high-efficiency and stable multi-point riveting fixture. Background Technology

[0002] Multi-point riveting fixtures are specialized tooling equipment used in industrial assembly to achieve simultaneous riveting at multiple positions. Their core function is to apply pressure to multiple riveting points on a workpiece during the same operation using an integrated pressure head assembly, causing plastic deformation of the rivets or riveting components, thereby completing the fastening connection between workpieces. Structurally, a multi-point riveting fixture typically consists of a base, a positioning mechanism, multiple sets of pressure heads, a drive device, and a guide assembly. The positioning mechanism is used to fix the workpiece to be processed, ensuring accurate positioning of the riveting points; the multiple sets of pressure heads are arranged according to the distribution pattern of the riveting points on the workpiece, allowing for simultaneous contact and pressure application; the drive device (such as a hydraulic, pneumatic, or electric mechanism) provides power to the pressure heads, and the guide assembly ensures the stability of the pressure head's movement trajectory.

[0003] Existing multi-point riveting fixtures have significant shortcomings in terms of the convenience and accuracy of workpiece positioning, severely impacting riveting efficiency and quality. Workpiece positioning is a prerequisite for the riveting process, requiring precise alignment of each riveting point on the workpiece with the fixture's pressure head; otherwise, it can lead to riveting position misalignment, damage to the riveted parts, or even workpiece scrap. However, the positioning mechanisms of existing fixtures are complex in design, often employing fixed positioning blocks or combinations of multiple adjusting bolts, which are not conducive to quick and accurate workpiece positioning and make it difficult to guarantee the synchronous accuracy of multiple positioning points. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a highly efficient and stable multi-point riveting fixture to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a highly efficient and stable multi-point riveting fixture, comprising a base frame, two symmetrically arranged guide rods fixedly connected to the left and right sides of the base frame, a top plate slidably connected between several guide rods, several symmetrically arranged first springs fixedly connected between the top plate and the base frame, a workpiece body placed on the top surface of the base frame, several symmetrically arranged through holes through one side of the workpiece body, a riveting nut slidably connected inside each through hole, several pressure rods corresponding vertically to the riveting nuts fixedly connected to the bottom surface of the top plate, several symmetrically arranged riveting sleeves threadedly connected to one side of the base frame, a positioning pin slidably connected inside each riveting sleeve, a second spring fixedly connected between the positioning pin and the riveting sleeve, the bottom surface of the riveting nut abutting against the top of the positioning pin, and the top of the positioning pin slidably connected to the workpiece body through a through hole.

[0007] Preferably, in any of the above schemes, a limiting post is fixedly connected to the bottom end of each positioning pin, and several limiting posts are slidably connected to several rivet sleeves respectively.

[0008] Preferably, the top surface of the bottom frame has a plurality of symmetrically arranged threaded holes, and the plurality of the press-fit sleeves are threadedly connected to the bottom frame through the plurality of threaded holes.

[0009] Preferably, in any of the above embodiments, a blocking ring is fixedly connected to the outer surface of the rivet sleeve, and the top surface of the blocking ring is in contact with the inner wall of the bottom frame.

[0010] Preferably, the outer surface of the rivet sleeve is fixedly connected with a plurality of circumferentially arrayed anti-slip protrusions, the anti-slip protrusions being made of rubber.

[0011] Preferably, an industrial suction cup is embedded in the top surface of the bottom frame, and the top surface of the industrial suction cup is in contact with the bottom surface of the workpiece body.

[0012] Preferably, in any of the above solutions, a limiting groove is provided at the bottom end of the pressure rod, and the top end of the rivet nut is slidably connected to the pressure rod through the limiting groove.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. Place the workpiece body on the top surface of the base frame. The positioning pin, under the action of the second spring, passes through the through hole to initially position the workpiece. Activate the industrial suction cup to adhere to the bottom surface of the workpiece body, completing workpiece locking. Insert the rivet nut into the through hole and make it fit against the top surface of the positioning pin. When the top plate presses down, the pressure rod pushes the rivet nut, causing the positioning pin to compress the second spring and move downwards, while the first spring is simultaneously compressed. After riveting is completed, the top plate rises, and the second spring drives the positioning pin to reset upwards, pushing the rivet nut out of the through hole, achieving rapid demolding of the workpiece. The cooperation between the positioning pin and the through hole enables rapid workpiece alignment, avoiding the cumbersome adjustment of traditional positioning blocks; the industrial suction cup enhances workpiece stability and prevents displacement during riveting; the reset function of the positioning pin assists in workpiece demolding, reducing manual removal time, improving overall positioning efficiency and accuracy, and reducing the risk of scrap due to positioning deviation.

[0014] 2. According to the specifications of the rivet nut, screw the corresponding rivet sleeve into the threaded hole. The retaining ring ensures that the installation depth of the rivet sleeve is consistent; the anti-slip protrusion facilitates tightening of the rivet sleeve, and the limiting post prevents the positioning pin from falling out of the rivet sleeve; during rivet pressing, the limiting groove of the pressure rod fits the top of the rivet nut to prevent it from tilting, and the first spring buffers the pressure to prevent workpiece deformation; after rivet pressing is completed, the first spring drives the top plate to return to its original position, waiting for the next operation. The threaded connection of the rivet sleeve allows it to be replaced as needed, adapting to different specifications of rivet nuts and improving the versatility of the fixture; the retaining ring and limiting post ensure structural stability, and the anti-slip protrusion simplifies the rivet sleeve replacement operation; the limiting groove and spring buffer design ensure rivet pressing quality, extend the service life of the fixture, and meet the needs of mass production. Attached Figure Description

[0015] Figure 1 This is a first-view structural diagram of the assembly of this utility model; Figure 2 This is a second-view structural diagram of the assembly of this utility model; Figure 3 This is a cross-sectional structural diagram of the assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the base frame of this utility model; Figure 5 This is a schematic diagram of the structure of the press-fit sleeve of this utility model.

[0016] In the diagram: 1-bottom frame, 2-guide rod, 3-top plate, 4-first spring, 5-workpiece body, 6-through hole, 7-press nut, 8-pressure rod, 9-press sleeve, 10-positioning pin, 11-second spring, 12-limiting post, 13-threaded hole, 14-blocking ring, 15-anti-slip protrusion, 16-industrial suction cup, 17-limiting groove. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0018] like Figures 1 to 5 As shown, a high-efficiency and stable multi-point riveting fixture includes a base frame 1. Two symmetrically arranged guide rods 2 are fixedly connected to the left and right sides of the base frame 1. A top plate 3 is slidably connected between several guide rods 2. Several symmetrically arranged first springs 4 are fixedly connected between the top plate 3 and the base frame 1. A workpiece body 5 is placed on the top surface of the base frame 1. Several symmetrically arranged through holes 6 are opened through one side of the workpiece body 5. A riveting nut 7 is slidably connected inside each through hole 6. Several pressure rods 8 corresponding to the riveting nuts 7 are fixedly connected to the bottom surface of the top plate 3. Several symmetrically arranged riveting sleeves 9 are threaded to one side of the base frame 1. A positioning pin 10 is slidably connected inside each riveting sleeve 9. A second spring 11 is fixedly connected between the positioning pin 10 and the riveting sleeve 9. The bottom surface of the riveting nut 7 fits against the top of the positioning pin 10. The top of the positioning pin 10 is slidably connected to the workpiece body 5 through the through hole 6.

[0019] As an optional technical solution of this utility model, a limiting post 12 is fixedly connected to the bottom end of each positioning pin 10, and several limiting posts 12 are slidably connected to several riveting sleeves 9 respectively. The limiting post 12 at the bottom end of the positioning pin 10 is slidably connected to the riveting sleeve 9, which can limit the rising height of the positioning pin 10, prevent it from completely coming out of the riveting sleeve 9 under the action of the second spring 11, and at the same time prevent the positioning pin 10 from sinking excessively during the riveting process, so as to ensure the stability of the positioning and riveting action.

[0020] As an optional technical solution of this utility model, the top surface of the bottom frame 1 is provided with a number of symmetrically arranged threaded holes 13, and a number of rivet sleeves 9 are threadedly connected to the bottom frame 1 through the number of threaded holes 13. The threaded holes 13 of the bottom frame 1 are threadedly connected to the rivet sleeves 9, so that the rivet sleeves 9 can be flexibly replaced according to the specifications of the rivet nut 7. The replacement can be completed by simply loosening the old rivet sleeve and tightening the new rivet sleeve, which improves the adaptability of the fixture to different types of workpieces and enhances the flexibility of use.

[0021] As an optional technical solution of this utility model, a blocking ring 14 is fixedly connected to the outer surface of the rivet sleeve 9. The top surface of the blocking ring 14 is in contact with the inner wall of the bottom frame 1. The blocking ring 14 on the outer surface of the rivet sleeve 9 is in contact with the inner wall of the bottom frame 1, which can play a limiting role when installing the rivet sleeve 9, ensuring that the depth of the rivet sleeve 9 screwed into the threaded hole 13 is consistent, avoiding the height deviation of the positioning pin 10 due to installation that is too deep or too shallow, and ensuring the synchronization of multiple rivet points.

[0022] As an optional technical solution of this utility model, the outer surface of the rivet sleeve 9 is fixedly connected with a number of circumferential array anti-slip protrusions 15. The anti-slip protrusions 15 are made of rubber. The rubber anti-slip protrusions 15 on the outer surface of the rivet sleeve 9 can increase the friction between the hand and the rivet sleeve 9, making it easier for the operator to apply force when tightening or loosening the rivet sleeve 9, avoiding slippage, and making the operation of replacing the rivet sleeve more convenient and labor-saving.

[0023] As an optional technical solution of this utility model, an industrial suction cup 16 is embedded in the top surface of the bottom frame 1. The top surface of the industrial suction cup 16 is in contact with the bottom surface of the workpiece body 5. The industrial suction cup 16 on the top surface of the bottom frame 1 is in contact with the bottom surface of the workpiece body 5. The workpiece is fixed by negative pressure adsorption, which prevents the workpiece from shifting or shaking due to force during the riveting process, enhances the stability of workpiece positioning, and avoids damage to the workpiece surface caused by traditional mechanical clamping.

[0024] As an optional technical solution of this utility model, a limiting groove 17 is provided at the bottom end of the pressure rod 8, and the top end of the rivet nut 7 is slidably connected to the pressure rod 8 through the limiting groove 17. The limiting groove 17 at the bottom end of the pressure rod 8 and the top end of the rivet nut 7 are slidably connected, which can play a radial constraint role on the rivet nut 7 during riveting, prevent it from tilting or shifting during the pressure process, ensure that the rivet nut 7 is accurately aligned with the through hole 6, and improve the riveting quality.

[0025] A high-efficiency and stable multi-point riveting fixture, the working principle of which is as follows: 1): Place the workpiece body 5 on the top surface of the bottom frame 1. The positioning pin 10 passes through the through hole 6 under the action of the second spring 11 to initially position the workpiece.

[0026] 2): Start the industrial suction cup 16 to adsorb the bottom surface of the workpiece body 5 and complete the workpiece locking; put the rivet nut 7 into the through hole 6 and it fits against the top surface of the positioning pin 10. When the top plate 3 is pressed down, the pressure rod 8 pushes the rivet nut 7 to compress the positioning pin 10 and the second spring 11 moves downward, and the first spring 4 is squeezed synchronously.

[0027] 3): After the riveting is completed, the top plate 3 rises back, and the second spring 11 drives the positioning pin 10 to reset upward, pushing the riveting nut 7 out of the through hole 6, so as to realize the rapid demolding of the workpiece.

[0028] In summary, this efficient and stable multi-point riveting fixture places the workpiece body 5 on the top surface of the base frame 1. The positioning pin 10 passes through the through hole 6 under the action of the second spring 11 to initially position the workpiece. The industrial suction cup 16 is activated to adsorb the bottom surface of the workpiece body 5, completing the workpiece locking. The riveting nut 7 is placed into the through hole 6 and fits against the top surface of the positioning pin 10. When the top plate 3 is pressed down, the pressure rod 8 pushes the riveting nut 7, causing the positioning pin 10 to compress the second spring 11 and move downward. The first spring 4 is simultaneously squeezed. After the riveting is completed, the top plate 3 rises, and the second spring 11 drives the positioning pin 10 to return to its original position, pushing the riveting nut 7 out of the through hole 6, thus achieving rapid demolding of the workpiece. The locating pin 10 and the through hole 6 work together to achieve rapid workpiece alignment, avoiding the cumbersome adjustment of traditional locating blocks; the industrial suction cup 16 enhances workpiece stability and prevents displacement during riveting; the reset function of the locating pin 10 assists in workpiece demolding, reducing manual removal time, improving overall positioning efficiency and accuracy, and reducing the risk of scrap due to positioning deviation. According to the specifications of the riveting nut 7, the corresponding riveting sleeve 9 is screwed into the threaded hole 13, and the blocking ring 14 ensures that the installation depth of the riveting sleeve 9 is consistent; the anti-slip protrusion 15 facilitates tightening the riveting sleeve 9, and the limiting post 12 prevents the locating pin 10 from coming out of the riveting sleeve 9; during riveting, the limiting groove 17 of the pressure rod 8 covers the top of the riveting nut 7 to prevent it from tilting, and the first spring 4 buffers the pressure to prevent workpiece deformation; after riveting is completed, the first spring 4 drives the top plate 3 to reset, waiting for the next operation. The threaded connection of the rivet sleeve 9 allows it to be replaced as needed, adapting to different specifications of rivet nuts and improving the versatility of the fixture; the blocking ring 14 and the limiting post 12 ensure structural stability, and the anti-slip protrusion 15 simplifies the replacement operation of the rivet sleeve; the limiting groove 17 and the spring buffer design ensure the quality of rivet pressing, extend the service life of the fixture, and meet the needs of mass production.

Claims

1. A high-efficiency and stable multi-point riveting fixture, characterized in that: The system includes a base frame (1), on which two symmetrically arranged guide rods (2) are fixedly connected on both the left and right sides. A top plate (3) is slidably connected between several guide rods (2). Several symmetrically arranged first springs (4) are fixedly connected between the top plate (3) and the base frame (1). A workpiece body (5) is placed on the top surface of the base frame (1). Several symmetrically arranged through holes (6) are opened through one side of the workpiece body (5). A rivet nut (7) is slidably connected inside each through hole (6). The top plate... (3) has several pressure rods (8) that are corresponding to the upper and lower parts of the rivet nut (7) fixedly connected to the bottom surface. Several symmetrically arranged rivet sleeves (9) are threadedly connected to one side of the bottom frame (1). Each rivet sleeve (9) has a locating pin (10) slidably connected inside. A second spring (11) is fixedly connected between the locating pin (10) and the rivet sleeve (9). The bottom surface of the rivet nut (7) is in contact with the top of the locating pin (10). The top of the locating pin (10) is slidably connected to the workpiece body (5) through the through hole (6).

2. The efficient and stable multi-point riveting fixture according to claim 1, characterized in that: Each of the positioning pins (10) is fixedly connected to a limiting post (12) at its bottom end, and several limiting posts (12) are slidably connected to several rivet sleeves (9).

3. The efficient and stable multi-point riveting fixture according to claim 2, characterized in that: The top surface of the bottom frame (1) is provided with a number of symmetrically arranged threaded holes (13), and a number of the rivet sleeves (9) are threadedly connected to the bottom frame (1) through the number of threaded holes (13).

4. The efficient and stable multi-point riveting fixture according to claim 3, characterized in that: A blocking ring (14) is fixedly connected to the outer surface of the rivet sleeve (9), and the top surface of the blocking ring (14) is in contact with the inner wall of the bottom frame (1).

5. The efficient and stable multi-point riveting fixture according to claim 4, characterized in that: The outer surface of the rivet sleeve (9) is fixedly connected with a number of anti-slip protrusions (15) arranged in a circular array, and the anti-slip protrusions (15) are made of rubber.

6. The efficient and stable multi-point riveting fixture according to claim 5, characterized in that: An industrial suction cup (16) is embedded in the top surface of the bottom frame (1), and the top surface of the industrial suction cup (16) is in contact with the bottom surface of the workpiece body (5).

7. The efficient and stable multi-point riveting fixture according to claim 6, characterized in that: The bottom end of the pressure rod (8) is provided with a limiting groove (17), and the top end of the rivet nut (7) is slidably connected to the pressure rod (8) through the limiting groove (17).

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