Height-adjustable equipment for self-piercing riveting machine

Abstract

The utility model discloses height-adjustable equipment for a self-piercing riveting machine, which comprises a supporting flat plate, a jacking structure, a movable flat plate, a fixed flat plate and a female die, the supporting flat plate is provided with the movable flat plate and the fixed flat plate, and the lower end of the supporting flat plate is provided with the jacking structure. The output end of the jacking structure penetrates through the supporting flat plate to make contact with the lower end of the movable flat plate and is used for driving the movable flat plate to move up and down above the supporting flat plate, a mounting hole is formed in the side, close to the movable flat plate, of the fixed flat plate, and the female die is mounted in the mounting hole. According to the utility model, the movable flat plate is driven and adjusted to move up and down through the jacking structure, so that a sample on the movable flat plate can be adjusted to move upwards to a position above the sample on the fixed flat plate as required, and the placement and support of the two samples and the height difference adjustment required by self-piercing riveting can be conveniently realized; the female die can assist the self-piercing riveting machine in positioning and riveting, and female dies with different concave surfaces can be replaced according to needs so as to meet different riveting use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp equipment, in particular to a height-adjustable device for a self-piercing riveting machine. Background Art

[0002] Self-pierce riveting is a cold forming process for quickly connecting two or more layers of sheet metal. After the rivet is inserted into the upper plate and pierced, under the action of a certain mold, the leg of the rivet expands around the lower plate material without punching the lower plate, finally forming a mechanical interlocking structure, achieving a heat-free, efficient, high-strength and durable connection. The application of self-pierce riveting in fiber metal laminate connections is mainly reflected in high-performance fields such as aerospace and automotive manufacturing. Self-pierce riveting can firmly connect fiber metal laminates with metal materials such as aluminum alloys and titanium alloys, as well as glass fiber and carbon fiber composites, maintaining the original properties of the materials, and is suitable for large-scale industrial production. When multiple layers of fiber metal laminates are stacked, self-pierce riveting can also evenly distribute stress, improve structural durability and reliability, and ensure consistent connection quality. This technology has shown significant advantages in improving structural performance and reducing weight.

[0003] However, nowadays, operators often hold the workpiece for self-pierce riveting without the assistance of equipment for support and positioning. The riveting process may be unstable, resulting in inaccurate rivet point position or uneven force, affecting product quality. In addition, operators need to contact dangerous equipment when operating, which poses certain safety hazards.

[0004] Therefore, there is an urgent need for a device with adjustable height for self-pierce riveting machines to solve the problem of having no equipment to assist in supporting and positioning when holding a workpiece for self-pierce riveting. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides a device for a self-pierce riveting machine with adjustable height, so as to solve the problem that when a handheld workpiece is subjected to self-pierce riveting, there is no device to assist in supporting and positioning.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for adjusting the height of a self-piercing riveting machine, characterized in that it includes a supporting plate, a lifting structure, a movable plate, a fixed plate and a die, the supporting plate is installed with adjacent movable and fixed plates, the lower end of the supporting plate is installed with a lifting structure, the output end of the lifting structure passes through the supporting plate to contact the lower end of the movable plate, and is used to drive the movable plate to move up and down above the supporting plate, the fixed plate is provided with a mounting hole on the side close to the movable plate, and the die is detachably mounted in the mounting hole.

[0008] To optimize the above technical solutions, specific measures taken also include:

[0009] Furthermore, the lifting structure includes a large gear, several small gears and bolts. The large gear is rotatably arranged at the lower end of the supporting plate. Several small gears meshing with it are arranged in an array around the large gear. The center of the upper end of each small gear is vertically fixed with a bolt. The bolts are respectively threaded and pass through the bottom of the supporting plate to contact the lower end of the movable plate. The large gear is used to drive several small gears to rotate synchronously, and drive the small gears and the corresponding bolts thereon to rise or fall synchronously.

[0010] Furthermore, a driving handle is provided at the bottom of the large gear.

[0011] Furthermore, the lifting structure also includes a cover shell, which is sleeved on the outside of the large gear and the small gear and is detachably connected to the lower end of the supporting plate, and there is space inside the cover shell for the small gear to move up and down.

[0012] Furthermore, three pinions are provided at equal intervals.

[0013] Furthermore, a base for connecting to a self-piercing riveting machine is provided at the lower end of the supporting plate.

[0014] Furthermore, a vertically arranged scale is provided on the side wall of the movable plate close to the fixed plate.

[0015] Furthermore, the upper ends of the movable plate and the fixed plate are respectively provided with a slide groove, and the slide groove is used for slidingly installing the clamp. The clamp on the movable plate is used to clamp the sample and move along the slide groove on the movable plate to approach or move away from the fixed plate. The clamp on the fixed plate is used to clamp the sample and move along the slide groove on the fixed plate to approach or move away from the movable plate.

[0016] Furthermore, the clamp includes a clamp head, a clamp base, a tightening bolt, a slider and a locking bolt, one side of the clamp base is set as a sloped surface with an inclined angle, the center of the sloped surface is provided with a protrusion that is also obliquely set, the center of the protrusion is provided with a tightening bolt thread groove, the side of the clamp head opposite to the sloped surface of the clamp base is correspondingly set as a sloped surface with an oblique groove, and the upper end of the clamp head is provided with an opening that is connected to the oblique groove, the clamp head is set at the sloped surface of the clamp base through a sliding connection with the protrusion through the oblique groove, the tightening bolt is used to pass through the opening and be fastened to the tightening bolt thread groove, the opening is provided with a width for the tightening bolt to move in the sliding direction of the clamp head, and the other side of the clamp base is connected to a slider through a locking bolt, and the slider is located below the clamp base for sliding connection with the slide groove.

[0017] Furthermore, two slide grooves are provided on the movable plate and the fixed plate respectively and are parallel to each other. The two slide grooves on the movable plate and the fixed plate are respectively slidably connected to clamps with opposite clamps, and the two opposite clamps are used to clamp both sides of the sample.

[0018] The beneficial effects of the utility model are:

[0019] The utility model uses a supporting plate as a support, and respectively arranges a movable plate and a fixed plate thereon, and drives the upward and downward movement of the movable plate through a lifting structure, so that the sample on the movable plate can be adjusted to a position above the sample on the fixed plate as required, thereby conveniently realizing the placement support of the two samples and the height difference adjustment required for self-piercing riveting; through the setting of the die, it can assist the self-piercing riveting machine in positioning, and at the same time, the concave surface of the die is convenient for cooperating with the self-piercing riveting machine for riveting; through the detachable setting of the die, it is convenient to replace the die with different concave surfaces as required to meet the use requirements of different riveting.

[0020] The fixture of this utility model can be used to precisely position the fiber metal laminate and the target material to be riveted, securing them in a preset position to form a secure connection, thereby achieving an efficient and reliable self-piercing riveting process. The height of the movable plate can be adjusted via a lifting structure to accommodate the height difference between the two riveted specimens. This utility model is capable of self-piercing riveting fiber metal laminates to metal, fiber composite materials, or fiber metal laminates. The fixture height can be adjusted to accommodate workpieces of varying thicknesses, providing support and positioning for the workpiece or specimen, ensuring the stability and accuracy of the self-piercing riveting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a height-adjustable device for a self-piercing riveting machine proposed in the present utility model;

[0022] Figure 2 This is a schematic structural diagram of a jacking structure for a height-adjustable device for a self-piercing riveting machine proposed in the present utility model;

[0023] Figure 3 This is a schematic diagram of a fixture structure for a height-adjustable device for a self-piercing riveting machine proposed in the present utility model;

[0024] Figure 4 This is a disassembled diagram of the clamp structure of a height-adjustable device for a self-piercing riveting machine proposed in the utility model.

[0025] Figure numerals: 1. chuck, 2. fixture base, 3. tightening bolt, 4. slider, 5. locking bolt, 6. supporting plate, 7. fixed plate, 8. movable plate, 9. large gear, 10. small gear, 11. cover, 12. die, 13. base. DETAILED DESCRIPTION

[0026] The utility model is described in detail below with reference to the accompanying drawings.

[0027] As attached Figure 1 As shown, an embodiment of the utility model is a device for adjusting the height of a self-piercing riveting machine, comprising a supporting plate 6, a lifting structure, a movable plate 8, a fixed plate 7 and a die 12. The supporting plate 6 is provided with adjacent movable plates 8 and fixed plates 7. The lower end of the supporting plate 6 is provided with a lifting structure. The output end of the lifting structure passes through the supporting plate 6 to contact the lower end of the movable plate 8, and is used to drive the movable plate 8 to move up and down above the supporting plate 6. A mounting hole is provided on the side of the fixed plate 7 close to the movable plate 8, and the die 12 is detachably mounted in the mounting hole.

[0028] The utility model uses a supporting plate 6 as a support, on which a movable plate 8 and a fixed plate 7 are respectively arranged, and the up and down movement of the movable plate 8 is driven and adjusted by a lifting structure, so that the sample on the movable plate 8 can be adjusted to move up to the upper position specified by the sample on the fixed plate 7 as needed, thereby conveniently realizing the placement and support of the two samples and the height difference adjustment required for self-piercing riveting; through the setting of the die 12, the self-piercing riveting machine can be assisted in positioning, and at the same time, the concave surface of the die 12 is convenient for cooperating with the self-piercing riveting machine for riveting; through the detachable setting of the die 12, it is convenient to replace the die 12 with different concave surfaces as needed to meet the use requirements of different riveting.

[0029] As attached Figure 2 As shown, in another specific embodiment, the jacking structure includes a large gear 9, several small gears 10 and bolts. The large gear 9 is rotatably arranged at the lower end of the supporting plate 6. Several small gears 10 meshing with it are arranged in an array around the large gear 9. The center of the upper end of each small gear 10 is vertically fixed with a bolt. The bolts are respectively threaded and pass through the bottom of the supporting plate 6 to contact the lower end of the movable plate 8. The large gear 9 is used to drive the several small gears 10 to rotate synchronously, and drive the small gears 10 and the corresponding bolts thereon to rise or fall synchronously.

[0030] Thus, during use, the large gear 9, the plurality of small gears 10, and the bolts can be coordinated to drive the large gear 9 to rotate the plurality of meshing small gears 10 as needed, thereby driving the corresponding bolts with different thread directions provided thereon to synchronously rise or fall at the threaded connection with the support plate 6, thereby achieving convenient and effective height adjustment of the movable plate 8. At the same time, during use, the small gears 10 will move up and down with the bolts. At this time, the vertical gap between the meshing large gear 9 and the small gears 10 effectively provides space for the small gears 10 to move up and down.

[0031] In a further embodiment based on the above embodiment, a driving handle is provided at the bottom of the large gear 9. This makes it easier for an operator to drive the large gear 9 in rotation.

[0032] In a further embodiment based on the above, the lifting structure further includes a cover 11, which is mounted outside the large gear 9 and the small gear 10 and is detachably connected to the lower end of the support plate 6. The cover 11 contains space for the small gear 10 to move up and down along the teeth of the large gear 9. In this embodiment, the bottom of the cover 11 is also provided with a circular hole through which the driving handle can extend and drive the large gear 9 to rotate. This protects the large gear 9, the small gear 10, and other structures while not affecting the operation of the device.

[0033] In a further embodiment based on the above embodiment, three pinions 10 are provided at equal intervals. Alternatively, four pinions 10 are provided and distributed in a rectangular shape at the four corners of the movable plate 8. This ensures stable driving of the movable plate 8.

[0034] In another embodiment, a base 13 for connecting to a self-piercing riveting machine is provided at the lower end of the support plate 6. In this embodiment, the base 13 does not interfere with the housing 11, and the lowermost end of the base 13 is lower than the lowermost end of the housing 11, so that the device can be connected to the self-piercing riveting machine without interference from the housing 11.

[0035] In another specific embodiment, a vertical scale is provided on the side wall of the movable plate 8 close to the fixed plate 7. In this way, the height difference between the samples can be accurately controlled by the vertical scale.

[0036] In another specific embodiment, the upper ends of the movable plate 8 and the fixed plate 7 are each provided with at least two parallel chutes. The chutes are used to slide and install fixtures. The fixture on the movable plate 8 is used to clamp the specimen and move along the chutes on the movable plate 8 toward or away from the fixed plate 7. The fixture on the fixed plate 7 is used to clamp the specimen and move along the chutes on the fixed plate 7 toward or away from the movable plate 8. In this way, the coordination of the chutes and fixtures facilitates stable fixation and convenient movement of the specimen on them as needed. In this embodiment, the number of chutes can be set as needed, or each group of two can be arranged in an array as needed. This allows for adaptability to specimens of a wider range of sizes.

[0037] As attached Figure 3 and attached Figure 4 As shown, in a further embodiment based on the above embodiment, the clamp includes a clamp 1, a clamp base 2, a tightening bolt 3, a slider 4 and a locking bolt 5. One side of the clamp base 2 is set as a sloped surface with an inclined angle, and the center of the sloped surface is provided with a protrusion that is also obliquely arranged. The center of the protrusion is provided with a tightening bolt thread groove. The side of the clamp 1 opposite to the sloped surface of the clamp base 2 is correspondingly set as a sloped surface with an oblique groove, and the upper end of the clamp 1 is provided with an opening that is connected to the oblique groove. The clamp 1 is connected to the protrusion through the sliding of the oblique groove. The connection is arranged on the slope surface of the clamp base 2, and the tightening bolt 3 is used to pass through the opening and be fastened to the tightening bolt thread groove. The opening is provided with a width for the tightening bolt 3 to move in the sliding direction of the chuck 1. The other side of the clamp base 2 is connected to the slider 4 through the locking bolt 5. The slider 4 is located below the clamp base 2 and is used for sliding connection with the slide groove. The tightening bolt 3 is used to manually tighten and fix after adjusting the relative position of the chuck 1 and the clamp base 2, so as to achieve the purpose of fixing the sample and ensure the stability and accuracy of the self-piercing riveting.

[0038] Specifically, after placing the two samples stably, in order to prevent the samples from shifting during the riveting process, according to the width of the samples, the slider 4 is used to select and place them in the slide grooves on the movable plate 8 and the fixed plate 7, and the clamp is adjusted to the appropriate position and locked; in order to adapt to the different thicknesses of the two self-piercing riveted samples, after adjusting the relative positions of the chuck 1 and the clamp base 2, the chuck 1 and the clamp base 2 are tightened by adjusting the manual adjustment bolt 3, which can achieve the purpose of placing the sample firmly in the riveting position, ensuring the stability and accuracy of the self-piercing riveting process.

[0039] The oblique sliding connection between the chuck 1 and the fixture base 2 allows the height difference between the chuck 1 and the movable plate 8 or fixed plate 7 to be adjusted as needed, thereby conveniently adjusting the clamping degree for specimens of varying thicknesses. Furthermore, the detachable structure allows for replacement of chucks 1 of different sizes as needed, or for the entire fixture to be moved to another chute.

[0040] In a further embodiment based on the above embodiment, two parallel sliding grooves are provided on each of the movable plate 8 and the fixed plate 7. The two sliding grooves on the movable plate 8 and the fixed plate 7 are slidably connected to clamps disposed oppositely on the chuck 1. The two opposing clamps are used to clamp the two sides of the specimen. In this way, the two sides of the specimen can be stabilized by the clamps on both sides.

[0041] A specific implementation of the present invention is as follows:

[0042] During use, due to the different thicknesses of self-piercing riveted specimens, two adjustment links are set up to clamp specimens of different sizes: a lifting structure that adjusts according to the thickness of the riveted specimen, and a slide installed to adjust the clamping mechanism according to the specimen width. Conventional handheld specimens are difficult to maintain stability during self-piercing riveting, resulting in the self-piercing riveting position being offset. In order to adapt to the thickness of the self-piercing riveted specimen, the large gear 9 is rotated to drive the four small gears 10 to rotate. By observing the scale line on the movable plate 8, the upper surface of the movable plate 8 is raised to the same height as the riveted specimen on the fixed plate 7, thereby ensuring that the two specimens can be placed stably; then, the slide is selected and the clamp is set as needed, and the specimen is locked and fixed as needed using the clamp's tightening bolts 3 and locking bolts 5.

[0043] Specifically, it is installed on the self-piercing riveting machine through the base 13, and the plane of the die 12 is flush with the upper surface of the fixed plate 7. According to the thickness difference between the two samples, the movable plate 8 is raised by rotating the large gear 9, and the scale line on the movable plate 8 is observed to raise the upper plane to the same height as the riveted sample on the fixed plate. The two samples are placed stably on the movable plate 8 and the fixed plate 7, and the riveting position is placed at the center of the die 12 of the fixed plate 7. According to the width of the sample, the fixture is placed in the appropriate slide groove through the slider 4, and the slider 4 is moved to the appropriate position. The chuck 1 slides on the fixture base 2 by adjusting the manually tightened bolt 3. After the chuck 1 is placed on the sample, the sample is locked by manually tightening the bolt 3, and then self-piercing riveting is performed.

[0044] During use, self-piercing riveting of different sample materials requires different types of semi-hollow rivets. Fiber metal laminates are mainly divided into glass fiber reinforced aluminum alloy laminates (GLARE), carbon fiber reinforced aluminum alloy laminates (Care) and graphite fiber reinforced titanium alloy laminates (TiGr). GLARE generally uses C-type rivets, which are mainly used for all-aluminum and composite materials, including low-carbon steel and certain high-strength steels; Care generally uses P-type rivets, which are mainly used for all-steel and mixed materials, including low-carbon steel and certain high-strength steels; TiGr ​​generally uses PG-type rivets, which are mainly used for mixed connections of ultra-high-strength steel and aluminum plates, castings and extruded profiles. Correspondingly, a set of concave dies 12 can be matched as needed. The concave die 12 can be composed of two upper and lower cylinders to form a "stepped" structure. The diameter of the upper cylinder is 18 mm and the height is 1 mm. The diameter of the lower cylinder is 1 mm and the height is 1 mm. The structure of the concave surface can be set accordingly as needed. The concave die 12 is installed in the mounting hole on the fixed plate 7 and supported by the supporting plate 6 to ensure that the upper plane of the concave die 12 is flush with the upper plane of the fixed plate 7.

[0045] The fixture of this utility model can be used to precisely position the fiber metal laminate and the target material to be riveted, securing them in a predetermined position to form a secure connection, thereby achieving an efficient and reliable self-piercing riveting process. The height of the movable plate 8 can be adjusted via a lifting structure to accommodate the height difference between the two riveted specimens. This utility model is capable of self-piercing riveting fiber metal laminates to metal, fiber composite materials, or fiber metal laminates. The fixture height can be adjusted to accommodate workpieces of varying thicknesses, providing support and positioning for the workpiece or specimen, ensuring the stability and accuracy of the self-piercing riveting process.

[0046] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the utility model without substantially changing the technical content.

[0047] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A height-adjustable device for a self-pierce riveting machine, characterized in that: The invention comprises a supporting plate (6), a lifting structure, a movable plate (8), a fixed plate (7) and a die (12), wherein the supporting plate (6) is provided with adjacent movable plates (8) and fixed plates (7), the lower end of the supporting plate (6) is provided with a lifting structure, the output end of the lifting structure passes through the supporting plate (6) to contact the lower end of the movable plate (8), and is used to drive the movable plate (8) to move up and down above the supporting plate (6), the fixed plate (7) is provided with a mounting hole on a side close to the movable plate (8), and the die (12) is detachably mounted in the mounting hole.

2. The height-adjustable device for a self-pierce riveting machine according to claim 1, characterized in that: The lifting structure includes a large gear (9), several small gears (10) and bolts. The large gear (9) is rotatably arranged at the lower end of the supporting plate (6). Several small gears (10) are arranged in an array around the large gear (9) and meshed with it. The center of the upper end of each small gear (10) is vertically fixed with a bolt. The bolts are respectively threaded and pass through the bottom of the supporting plate (6) to contact the lower end of the movable plate (8). The large gear (9) is used to drive the several small gears (10) to rotate synchronously and drive the small gears (10) and the corresponding bolts thereon to rise or fall synchronously.

3. The height-adjustable device for a self-pierce riveting machine according to claim 2, characterized in that: A driving handle is provided at the bottom of the large gear (9).

4. The height-adjustable device for a self-pierce riveting machine according to claim 2, characterized in that: The lifting structure further includes a cover (11), which is sleeved on the outside of the large gear (9) and the small gear (10) and is detachably connected to the lower end of the supporting plate (6), and there is space inside the cover (11) for the small gear (10) to move up and down.

5. The height-adjustable device for a self-pierce riveting machine according to claim 2, characterized in that: Three pinions (10) are provided at equal intervals.

6. The height-adjustable device for a self-pierce riveting machine according to claim 1, characterized in that: The lower end of the supporting plate (6) is provided with a base (13) for connecting to a self-piercing riveting machine.

7. The height-adjustable device for a self-pierce riveting machine according to claim 1, characterized in that: A vertically arranged scale is provided on the side wall of the movable plate (8) close to the fixed plate (7).

8. The height-adjustable device for a self-pierce riveting machine according to claim 1, characterized in that: The upper ends of the movable plate (8) and the fixed plate (7) are respectively provided with a slide groove, and the slide groove is used for slidingly installing a clamp. The clamp on the movable plate (8) is used to clamp the sample and move along the slide groove on the movable plate (8) to move closer to or away from the fixed plate (7). The clamp on the fixed plate (7) is used to clamp the sample and move along the slide groove on the fixed plate (7) to move closer to or away from the movable plate (8).

9. The height-adjustable device for a self-pierce riveting machine according to claim 8, characterized in that: The clamp comprises a clamp head (1), a clamp base (2), a tightening bolt (3), a slide block (4) and a locking bolt (5), one side of the clamp base (2) is set as a slope surface with an inclined angle, the center of the slope surface is provided with a protrusion arranged in the same oblique direction, the center of the protrusion is provided with a tightening bolt thread groove, the side of the clamp head (1) opposite to the slope surface of the clamp base (2) is correspondingly set as a slope surface with an inclined groove, and the upper end of the clamp head (1) is provided with an opening connected to the inclined groove, the clamp head (1) is set at the slope surface of the clamp base (2) through the inclined groove and the protrusion sliding connection, the tightening bolt (3) is used to pass through the opening and be fastened to the tightening bolt thread groove, the opening is provided with a width for the tightening bolt (3) to move in the sliding direction of the clamp head (1), the other side of the clamp base (2) is connected to the slide block (4) through the locking bolt (5), the slide block (4) is located below the clamp base (2) and is used for sliding connection with the slide block.

10. The height-adjustable device for a self-pierce riveting machine according to claim 9, characterized in that: The sliding grooves on the movable plate (8) and the fixed plate (7) are respectively provided with two mutually parallel grooves, and the two sliding grooves on the movable plate (8) and the fixed plate (7) are respectively slidably connected to clamps with the clamps (1) arranged opposite to each other, and the two opposite clamps are used to clamp the two sides of the sample.

Images