Riveting clamp

Abstract

The utility model relates to the technical field of machining clamps, in particular to a riveting clamp which comprises a base used for supporting the clamp, a positioning device used for limiting the installation position of a hinge workpiece is arranged on the base, and clamping devices used for fixing the hinge workpiece are connected to the two sides of the positioning device. The clamping device is matched and connected with the positioning device; the positioning device comprises a positioning plate, a positioning block and a positioning pin; the positioning plate is fixedly connected to the top end of the base; the positioning block is located in the middle of the clamping device, a positioning groove is formed in the positioning block, and the positioning groove is used for being assembled with a hinge workpiece in a riveting mode; the positioning pin is fixedly connected to the side, located on the positioning block, of the positioning plate, and the outer side of the positioning pin is sleeved with a cushion block. According to the fixture, the hinge workpiece can be rapidly positioned and fixed, efficient and accurate riveting is achieved, the production efficiency is improved, the labor intensity is reduced, the consistency of riveting quality can be guaranteed, and the fixture has wide application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing fixtures, in particular to a riveting fixture. Background Art

[0002] The hinge is composed of several sub-components that are assembled together to achieve the assembly effect. Due to the floating differences in dimensional tolerances of the sub-components in the manufacturing process, the defective products caused by the extreme matching differences in production cannot enter the standard range set by the customer, thus affecting the use and performance of the assembled products such as notebooks, desk lamps or printers. The hinge auxiliary fixture is the only important tool to control the production pass rate and process stability. That is, through the fixture clamping and parallel displacement to ensure that the product center does not deviate, it is necessary to use the copying spindle to control the verticality of the product and the balance of the clamping force.

[0003] In existing tooling fixtures, threaded clamps are usually used to fix and clamp hinge workpieces. The clamping force is controlled manually. If the clamping is too tight, the product surface will be crushed and the fixture will be easily damaged. If the clamping is too loose, the hinge will swing sideways, affecting the riveting size, and the product will also rotate in the direction of the rivet, causing product damage. Therefore, a special tooling fixture is needed to assist in the riveting of the hinge. Utility Model Content

[0004] In order to solve the technical defects mentioned in the above background technology, the purpose of the utility model is to provide a riveting fixture, which can quickly and accurately complete the riveting work of the hinge, improve production efficiency and reduce labor intensity.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A riveting fixture comprises a base for supporting the fixture, a positioning device for limiting the installation position of a hinge workpiece is arranged on the base, clamping devices for fixing the hinge workpiece are connected on both sides of the positioning device, and the clamping devices are cooperatively connected with the positioning device; the positioning device comprises a positioning plate, a positioning block and a positioning pin, the positioning plate is fixedly connected to the top of the base; the positioning block is located in the middle of the clamping device, and a positioning groove is provided on the positioning block, and the positioning groove is used for riveting and assembling with the hinge workpiece; the positioning pin is fixedly connected to the positioning plate on one side of the positioning block, and a pad is provided on the outer side of the positioning pin, and the pad is used to separate the distance between the hinge workpieces.

[0007] Preferably, the clamping device includes a pair of slides slidably connected to the positioning plate, a clamping plate snap-connected to one end of the slide, and a driving element for driving the clamping plate to move, one end of the slide is provided with at least two notches, and the other end is provided with a wedge-shaped groove; one side of the clamping plate connected to the slide is configured as a wedge-shaped structure, and the wedge-shaped structure is adapted to the wedge-shaped groove; the driving element is transmission-connected to the other end of the clamping plate away from the slide.

[0008] Preferably, the notch is in a semicircular structure, and the semicircular radius of the notch is the same as the outer diameter of the journal of the hinge workpiece.

[0009] Preferably, the driving element includes a driving cylinder, a telescopic shaft and a cylinder mounting seat, the driving cylinder is fixedly connected to the cylinder mounting seat, and the output end of the driving cylinder is transmission-connected to the telescopic shaft, and under the drive of the driving cylinder, the telescopic shaft drives the splint to push the skateboard to slide left and right along the channel direction.

[0010] Preferably, the two sides of the skateboard are also fixedly connected with limit strips, which are arranged parallel to the clamping device and fixedly connected to the positioning plate by limit bolts, and the gap between two adjacent parallel limit strips forms a channel for the skateboard to slide.

[0011] Preferably, a slide bar is provided at the top of the slide board, and the slide bar and the slide board are an integrally formed structure.

[0012] Preferably, axial holes are provided at the four corners of the positioning plate, and the positioning plate is fixedly connected to the base by inserting limiting bolts into the axial holes.

[0013] In summary, the beneficial effects of the utility model are:

[0014] 1. The utility model integrates the positioning device and the clamping device, so that the entire fixture has a compact structure, occupies a small space, and is easy to use in a limited working area; at the same time, the positioning, clamping and riveting of the hinge workpiece can be completed through simple operations, which reduces the difficulty of operation; in addition, the adjustable clamping device can adapt to hinge workpieces of different specifications and models, and has strong versatility; and each component of the fixture can be disassembled, which is convenient for daily maintenance.

[0015] 2. The hinge riveting fixture of the utility model realizes fast and accurate positioning and fixing of the hinge, as well as efficient and precise riveting. This fixture not only improves production efficiency and reduces labor intensity, but also can ensure the consistency of riveting quality, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the riveting fixture of the utility model;

[0017] Figure 2 It is a top view of the riveting fixture of the utility model;

[0018] Figure 3 yes Figure 2 Sectional view of the AA plane;

[0019] Figure 4 It is a structural schematic diagram of the hinge workpiece in the utility model.

[0020] Description of reference numerals in the figures:

[0021] 1. Base; 2. Positioning device; 21. Positioning plate; 211. Axis hole; 22. Limiting strip; 23. Limiting bolt; 24. Channel; 3. Clamping device; 31. Slide plate; 311. Notch; 312. Wedge groove; 313. Slide bar; 32. Clamp plate; 33. Driving element; 331. Driving cylinder; 332. Telescopic shaft; 333. Cylinder mounting seat; 4. Positioning block; 41. Positioning groove; 5. Positioning pin; 51. Spacer block; 6. Hinge workpiece; 7. Angle code. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0024] In the description of the utility model, if there is a word description such as "several", it means one or more, and the meaning of "more" is two or more. Greater than, less than, and more than are understood to exclude the number itself, and above, below, and within are understood to include the number itself. If there is a description of the first, second, and third, it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] The following is combined with Figure 1-4, an embodiment of a riveting fixture of the utility model is further described in detail.

[0026] A riveting fixture, a base 1 is provided with a positioning device 2 for limiting the installation position of a hinge workpiece 6, and clamping devices 3 for fixing the hinge workpiece 6 are connected to both sides of the positioning device 2, and the clamping devices 3 are cooperatively connected with the positioning device 2; the positioning device 2 includes a positioning plate 21, a positioning block 4 and a positioning pin 5, the positioning plate 21 is fixedly connected to the top of the base 1; the positioning block 4 is located in the middle of the clamping device 3, and a positioning groove 41 is opened on the positioning block 4, and the positioning groove 41 is used for riveting and assembling with the hinge workpiece 6; the positioning pin 5 is fixedly connected to the positioning plate 21 on one side of the positioning block 4, and a pad 51 is sleeved on the outer side of the positioning pin 5, and the pad 51 is used to separate the distance between the hinge workpieces 6.

[0027] Specifically, the hinge is composed of several sub-components that are superimposed and assembled to achieve an assembly effect. When riveting a single hinge workpiece 66, first pre-install the rivet on the single hinge workpiece 6, and then put the end connected to the next hinge on the positioning pin 5, and use the cushion block 51 on the positioning pin 5 to separate the hinge workpiece 6, so that it maintains a certain distance, and then it is convenient to rivet with the next hinge workpiece 6; and when riveting the rivet on the hinge workpiece 6, the clamping device 3 is used to clamp and fix the rivet, so that the assembly position of the hinge workpiece 6 is fixed, and it is avoided that it is offset during the riveting process, which affects the riveting effect; and when fixing the angle code 7 on one side of the hinge workpiece 6, the outer riveting press is used to pre-install the angle code 7 at the position corresponding to the rivet, and then in the process of riveting, in order to ensure that the opening on the hinge workpiece 6 is accurately matched with the rivet and the angle code 7, the positioning groove 41 provided on the positioning block 4 is used to clamp the hinge workpiece 66, so that it is confined to a specific installation area, which is convenient for precise installation.

[0028] In this embodiment, axial holes 211 are formed at four corners of the positioning plate 21 , and the positioning plate 21 is fixedly connected to the base 1 by inserting limiting bolts 23 into the axial holes 211 .

[0029] Specifically, the axial hole 211 can quickly install the positioning plate 21 and the base 1, and a number of mounting holes are also opened on the positioning plate 21. Positioning pins are inserted into the mounting holes to fix them to the limit strip 22, thereby assisting in limiting the position of the hinge workpiece 6, guiding the limit strip 22 and preventing the limit strip 22 from being pre-installed and misaligned.

[0030] In this embodiment, the clamping device 3 includes a pair of slides 31 slidably connected to the positioning plate 21, a clamping plate 32 snap-fitted to one end of the slide 31, and a driving element 33 for driving the clamping plate 32 to move. One end of the slide 31 is provided with at least two notches 311, and the other end is provided with a wedge-shaped groove 312; one side of the clamping plate 32 connected to the slide 31 is set as a wedge-shaped structure, and its wedge-shaped structure is adapted to the wedge-shaped groove 312; the driving element 33 is transmission-connected to the other end of the clamping plate 32 away from the slide 31.

[0031] Specifically, the clamping device 3 is located on both sides of the base 1, and the clamping device 3 stably fixes the hinge workpiece 6 on the positioning block 4 by clamping on the left and right sides. The slide plate 31 and the limit strip 22 are clearance-matched. The notch 311 opened at one end of the slide plate 31 is in a semicircular structure, and the semicircular radius of the notch 311 is the same as the outer diameter of the shaft neck of the hinge workpiece 6. When the hinge workpiece 6 is clamped and fixed, the notch 311 is used to engage with the shaft neck of the hinge workpiece 6, so as to quickly position the hinge workpiece 6 at the riveting station; wherein, the semicircular radius of the notch 311 is the same as or slightly smaller than the outer diameter of the shaft neck of the hinge workpiece 6, so as to perfectly fit with the shaft neck;

[0032] It is worth noting that in this arrangement, the clamping plate 32 is subjected to force by the driving element 33, and the slide plate 31 then applies pressure to the neck portion of the hinge workpiece 6 to guide the hinge until it is in contact with the first pad as the full force limiting point, so that the hinge cannot swing in the clamping area (i.e., the neck portion) due to axial force, thereby ensuring the stability of the hinge during assembly.

[0033] In this embodiment, the driving element 33 includes a driving cylinder 331, a telescopic shaft 332 and a cylinder mounting seat 333. The driving cylinder 331 is fixedly connected to the cylinder mounting seat 333, and the output end of the driving cylinder 331 is transmission-connected to the telescopic shaft 332. Driven by the driving cylinder 331, the telescopic shaft 332 drives the splint 32 to push the slide plate 31 to slide left and right along the direction of the channel 24.

[0034] Specifically, the driving cylinder 331 drives the clamping plate 32 to move through the telescopic shaft 332, thereby controlling the slide plate 31 to slide along the positioning plate 21, and using the slide plates 31 on the left and right sides to quickly clamp and fix the hinge workpiece 6, so that the rivet can be quickly and accurately driven into the opening of the hinge workpiece 6 to achieve riveting; and in the process of driving the slide plate 31 to move, in addition to using the driving cylinder 331 and the telescopic shaft 332 as the driving source, other driving parts with the same function can also be used, including but not limited to motor transmission, screw transmission, gear rack transmission, etc.

[0035] In this embodiment, the two sides of the slide plate 31 are also fixedly connected to the limit strips 22, the limit strips 22 are arranged parallel to the clamping device 3, and the limit strips 22 are fixedly connected to the positioning plate 21 by limit bolts 23. The gap between two adjacent parallel limit strips 22 forms a channel 24 for the slide plate 31 to slide.

[0036] Specifically, the limit bar 22 can limit the sliding direction of the slide plate 31 to prevent the slide plate 31 from shifting during the sliding process, thereby affecting the clamping and fixation of the hinge workpiece 6. At the same time, protrusions are respectively provided on both sides of the slide plate 31, and grooves are respectively provided at the bottom of the limit bar 22. The grooves are adapted to the protrusions, so that the slide plate 31 slides along the direction of the grooves, preventing the slide plate 31 from deviating from the axis during the sliding process and becoming misaligned.

[0037] In this embodiment, a slide bar 313 is disposed at the top of the slide plate 31 , and the slide bar 313 and the slide plate 31 are an integrally formed structure.

[0038] Specifically, the slide bar 313 is designed to prevent the riveting press from damaging the slide plate 31 during riveting with the riveting press, thereby damaging the slide plate 31 and affecting the sliding of the slide plate 31 .

[0039] The working principle of this utility model:

[0040] A single hinge workpiece 6 is composed of two hinge pieces. When riveting a single hinge workpiece 6, first pre-install rivets on the two hinge pieces, wherein the bottom end diameter of the rivet is larger than the riveting opening on the hinge piece to prevent the hinge piece from falling off the rivet, and the pre-installed hinge workpiece 6 is installed on the positioning block 4 so that the rivet falls into the groove; at the same time, the mounting hole on the hinge workpiece 6 for connecting the next hinge workpiece 6 is sleeved on the positioning pin 5, and the spacer 51 is used to separate so that there is a certain distance between the two hinge pieces, and finally the telescopic rod is driven by the driving cylinder 331 of the clamping device 3 to pull back the clamping plate 32, so that the slide plates 31 spliced ​​on both sides are separated, and then the hinge workpiece 6 is placed on the positioning block 4, and the opening on the hinge workpiece 6 that needs to be riveted is matched with the positioning hole, and then the slide plate 31 is used to The hinge workpiece 6 is tightened so that the neck of the hinge workpiece 6 is clamped in the notch 311 of the slide plate 31, and the side of the hinge workpiece 6 that needs to be riveted with rivets is placed on the positioning pin 5, and is horizontally guided by the limit strip 22 to avoid being pressed to the original riveted surface and causing loosening, and then the hinge workpiece 6 is clamped and positioned using the angle code 7 to prevent the hinge workpiece 6 from shaking or tilting; then the other parts of the hinge can be installed in sequence, and then the position of the angle code corresponding to the rivet is installed on the riveting press, and the riveting press applies force from top to bottom to align the main axis of the hinge workpiece 6 with the riveting machine and press it down, thus completing the riveting assembly of the hinge workpiece 6; after assembly, it is only necessary to use the driving cylinder 331 to pull back the slide plate 31 again, loosen the neck of the hinge workpiece 6, take out the assembled hinge workpiece, and then load a new hinge workpiece for riveting operation.

[0041] The utility model integrates the positioning device 2 and the clamping device 3, so that the entire clamp structure is compact and occupies little space, which is convenient for use in a limited working area; at the same time, the positioning, clamping and riveting of the hinge workpiece 6 can be completed through simple operations, which reduces the difficulty of operation; in addition, the adjustable clamping device 3 can adapt to hinge workpieces 6 of different specifications and models, and has strong versatility; and the various components of the clamp can be disassembled, which is convenient for daily maintenance and care; and it realizes rapid and accurate positioning and fixation of the hinge, as well as efficient and precise riveting. This clamp not only improves production efficiency and reduces labor intensity, but also can ensure the consistency of riveting quality, and has broad application prospects.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A riveting fixture, comprising a base for supporting the fixture, characterized in that: The base is provided with a positioning device for limiting the installation position of the hinge workpiece, and clamping devices for fixing the hinge workpiece are connected to both sides of the positioning device, and the clamping devices are cooperatively connected with the positioning device; the positioning device includes a positioning plate, a positioning block and a positioning pin, and the positioning plate is fixedly connected to the top of the base; the positioning block is located in the middle of the clamping device, and a positioning groove is provided on the positioning block, and the positioning groove is used for riveting and assembling with the hinge workpiece; the positioning pin is fixedly connected to the positioning plate on one side of the positioning block, and a pad is provided on the outer side of the positioning pin, and the pad is used to separate the distance between the hinge workpieces.

2. The riveting fixture according to claim 1, characterized in that: The clamping device includes a pair of slides slidably connected to the positioning plate, a clamping plate snap-connected to one end of the slide, and a driving element for driving the clamping plate to move. One end of the slide has at least two notches, and the other end has a wedge-shaped groove. One side of the clamping plate connected to the slide is set as a wedge-shaped structure, and its wedge-shaped structure is adapted to the wedge-shaped groove. The driving element is transmission-connected to the other end of the clamping plate away from the slide.

3. The riveting fixture according to claim 2, characterized in that: The notch is in a semicircular structure, and the semicircular radius of the notch is the same as the outer diameter of the journal of the hinge workpiece.

4. The riveting fixture according to claim 3, characterized in that: The driving element includes a driving cylinder, a telescopic shaft and a cylinder mounting seat. The driving cylinder is fixedly connected to the cylinder mounting seat, and the output end of the driving cylinder is transmission-connected to the telescopic shaft. Under the drive of the driving cylinder, the telescopic shaft drives the clamping plate to push the slide plate to slide left and right along the channel direction.

5. The riveting fixture according to claim 4, characterized in that: The two sides of the slide plate are also fixedly connected with limit strips, which are arranged parallel to the clamping device and fixedly connected to the positioning plate by limit bolts. The gap between two adjacent parallel limit strips forms a channel for the slide plate to slide.

6. The riveting fixture according to claim 5, characterized in that: A slide bar is arranged on the top of the slide plate, and the slide bar and the slide plate are an integrally formed structure.

7. The riveting fixture according to claim 6, characterized in that: Axial holes are provided at the four corners of the positioning plate, and the positioning plate is inserted into the axial holes and fixedly connected to the base through limiting bolts.

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