Automatic riveting-pressing necking-in machine

Abstract

The utility model relates to an automatic riveting necking machine. The three-jaw chuck is vertically arranged on the machine table and used for clamping a workpiece, the rotation driving assembly is arranged in the machine table and used for driving the three-jaw chuck to rotate, the spin riveting mechanism is arranged on one side of the three-jaw chuck and used for conducting spin riveting and closing-up on the workpiece, and the height adjusting assembly is arranged on the machine table and used for driving the spin riveting mechanism to ascend and descend. The spin riveting mechanism comprises a horizontally-arranged linear driver and a pressing wheel rotationally arranged at the driving end of the linear driver. A circle of riveting part is arranged on the surface of the pressing wheel; workpieces of various shapes and sizes are clamped through the three-jaw chuck, meanwhile, the height of the spin riveting mechanism can be adjusted through the height adjusting assembly, the application range is wider, and the rotary riveting device has the advantages of being simple in structure, convenient to operate, high in efficiency, good in closing-in effect and the like.

Description

Technical Field

[0001] The utility model relates to the field of riveting and closing, in particular to an automatic riveting and closing machine. Background Art

[0002] In the field of modern industrial manufacturing, especially in the fields of automotive safety components, aerospace components, and precision machinery, there are extremely high requirements for the connection strength, sealing performance, and durability of components. Among them, the riveting and closing technology, as an important connection process, is widely used in the manufacturing process of various metal shells and structural parts.

[0003] The riveting and closing technology squeezes and deforms the edge of the metal shell or structural part, so that a tight locking structure is formed at the connection part, thereby significantly improving the connection strength. This is particularly important for components that need to bear large loads or vibrations; at the same time, through riveting and closing, the gap at the connection part can be effectively reduced, improving the sealing performance of the component. This is crucial for preventing gas or liquid leakage or the intrusion of external impurities.

[0004] For example, a rotary riveting and closing machine disclosed in the prior art CN204817881U and a new rotary riveting and closing machine disclosed in the prior art CN204867138U can close the workpiece, but the clamping tooling can only clamp specific workpieces, and at the same time, the height of the rotary riveting device is fixed and cannot be adjusted, resulting in a relatively limited scope of use. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic riveting and closing machine to overcome the deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: an automatic riveting and closing machine, comprising a machine table, a three-jaw chuck vertically arranged on the machine table for clamping a workpiece, a rotary drive assembly arranged in the machine table for driving the three-jaw chuck to rotate, a rotary riveting mechanism arranged on one side of the three-jaw chuck for rotary riveting and closing the workpiece, and a height adjustment assembly arranged on the machine table for driving the rotary riveting mechanism to lift and lower;

[0007] The rotary riveting mechanism includes a linear drive horizontally placed and a pressing wheel rotatably arranged at the drive end of the linear drive; a circle of riveting parts is arranged on the surface of the pressing wheel.

[0008] Preferably, the rotary riveting mechanism further includes a guiding assembly arranged between the linear drive and the pressing wheel; the guiding assembly includes two parallel guide rails, a slider slidably arranged on the guide rails, a translation seat horizontally arranged on the two sliders, a clamping groove arranged at the top of one end of the translation seat located at the three-jaw chuck, an installation rod partially located in the clamping groove, and a pressing block arranged on the translation seat for locking the installation rod; the drive end of the linear drive is connected to the translation seat; the pressing wheel is horizontally arranged at the outer end of the installation rod.

[0009] Preferably, the cross-section of the card slot is V-shaped; the inner end part of the mounting rod corresponds to the shape of the card slot.

[0010] Preferably, the linear drive is an electric cylinder.

[0011] Preferably, the height adjustment assembly includes a movable plate horizontally arranged above the machine table, a plurality of guide posts vertically arranged on the machine table and passing through the movable plate, and a lead screw module vertically arranged on the machine table for driving the lifting of the movable plate; the linear drive and the guiding assembly are both installed on the movable plate.

[0012] Preferably, the lead screw module can be hand-operated or electric.

[0013] Preferably, the rotary drive assembly includes a connecting shaft vertically passing through the machine table, a support frame arranged inside the machine table and below the connecting shaft, a motor vertically arranged on the support frame, and a coupling for connecting the motor and the connecting shaft; bearings are sleeved on both the upper and lower parts of the machine table on the connecting shaft; the three-jaw chuck is arranged at the top of the connecting shaft.

[0014] Preferably, a jig is further included; the outer surface of the jig is circular, and a profiling positioning cavity corresponding to the shape of the product is arranged inside; a positioning convex edge is further arranged at the top of the jig.

[0015] Preferably, the three-jaw chuck is a pneumatic three-jaw chuck.

[0016] Preferably, a protective cover with a front opening is arranged on the machine table; safety light curtains are arranged on both sides of the front opening of the protective cover.

[0017] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art:

[0018] The present utility model clamps workpieces of various shapes and sizes through a three-jaw chuck, and at the same time can adjust the height of the riveting mechanism through the height adjustment assembly, with a wider application range, and has the advantages of simple structure, convenient operation, high efficiency, good closing effect, etc. Description of the Drawings

[0019] The technical solutions of the present utility model will be further described below with reference to the drawings:

[0020] Attached Figure 1 is a schematic structural diagram of the automatic riveting and closing machine described in the present utility model;

[0021] Attached Figure 2 is a partial schematic structural diagram of the automatic riveting and closing machine described in the present utility model;

[0022] Attached Figure 3Schematic structural diagram of the guiding component in the present utility model;

[0023] Appendix Figure 4 Partial sectional view of the guiding component in the present utility model;

[0024] Appendix Figure 5 Sectional view of the rotary drive component in the present utility model;

[0025] Appendix Figure 6 Schematic structural diagram of the fixture in the present utility model.

[0026] Wherein: 1. Machine table; 11. Protective cover; 12. Safety light curtain; 13. Touch screen; 14. Three-color indicator light; 15. Protection window; 16. Caster; 2. Three-jaw chuck; 3. Rotary drive component; 31. Connecting shaft; 32. Support frame; 33. Motor; 34. Coupling; 35. Bearing; 4. Rotary riveting mechanism; 41. Linear actuator; 42. Pressing wheel; 421. Riveting and pressing part; 43. Guide rail; 44. Slide block; 45. Translation seat; 451. Card slot; 46. Mounting rod; 47. Pressing block; 5. Height adjustment component; 51. Movable plate; 52. Guide post; 53. Lead screw module; 6. Fixture; 61. Profiled positioning cavity; 62. Positioning convex edge; 7. Workpiece. Specific embodiments

[0027] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Appendix Figures 1-6 The automatic riveting and closing machine described in the present utility model includes a machine table 1, a three-jaw chuck 2 vertically arranged on the machine table 1 for clamping a workpiece 7, a rotary drive component 3 arranged in the machine table 1 for driving the three-jaw chuck 2 to rotate, a rotary riveting mechanism 4 arranged on one side of the three-jaw chuck 2 for performing rotary riveting and closing on the workpiece 7, and a height adjustment component 5 arranged on the machine table 1 for driving the rotary riveting mechanism 4 to lift and lower;

[0029] The rotary riveting mechanism 4 includes a horizontally placed linear actuator 41 and a pressing wheel 42 rotatably arranged at the driving end of the linear actuator 41; a circle of riveting and pressing parts 421 is arranged on one side of the bottom of the pressing wheel 42.

[0030] During operation: The workpiece 7 to be closed is fixed by the three-jaw chuck 2 manually, then the height of the rotary riveting mechanism 4 is adjusted to a suitable position through the height adjustment component 5, then the rotary drive component 3 is used to drive the three-jaw chuck 2 to drive the workpiece 7 to rotate, and at the same time the linear actuator 41 is used to drive the pressing wheel 42 to push towards the workpiece 7, and rotary riveting and closing are performed through the riveting and pressing parts 421 on the surface of the pressing wheel 42; when the rotary riveting is completed, the linear actuator 41 drives the pressing wheel 42 to retract to the initial position, and at the same time the rotary drive component 3 stops rotating, and the product is taken off manually to check the rotary riveting result.

[0031] Furthermore, the rotary riveting mechanism 4 further includes a guiding component disposed between the linear driver 41 and the pressing wheel 42, which is used to bear the longitudinal shear force, reduce the force on the linear driver 41, thereby avoiding damage to the linear driver 41 and improving the service life.

[0032] Furthermore, the guiding component includes two parallel guide rails 43, sliders 44 slidably disposed on the guide rails 43, a translation seat 45 horizontally disposed on the two sliders 44, a card slot 451 disposed at the top end of the translation seat 45 located at one end of the three-jaw chuck 2, a mounting rod 46 partially located in the card slot 451, and a pressing block 47 disposed on the translation seat 45 for locking the mounting rod 46; the driving end of the linear driver 41 is connected to the translation seat 45; the pressing wheel 42 is horizontally disposed at the outer end of the mounting rod 46; during operation: the linear driver 41 drives the translation seat 45 to drive the pressing wheel 42 to translate. Since the translation seat 45 is disposed on the two sets of guide rails 43 and sliders 44, it can bear the longitudinal shear force brought by the rotary riveting and closing.

[0033] Furthermore, the cross-section of the card slot 451 is V-shaped; the inner end portion of the mounting rod 46 corresponds to the shape of the card slot 451; during installation: the inclined surfaces on both sides of the mounting rod 46 can be closely attached to the V-shaped card slot 451, which not only has better locking force but also can reduce the processing accuracy; if the cross-section of the card slot 451 is a conventional rectangle, unless the processing accuracy is very high, there will be gaps between the two sides of the mounting rod 46 and the card slot 451. Once the position of the mounting rod 46 shifts during the processing, it will affect the rotary riveting quality.

[0034] Furthermore, the linear driver 41 is an electric cylinder, and it can be set to slowly advance to achieve high-precision rotary riveting and closing.

[0035] Furthermore, the height adjustment component 5 includes a movable plate 51 horizontally disposed above the machine table 1, four guide columns 52 vertically disposed on the machine table 1 and passing through the movable plate 51, and a lead screw module 53 vertically disposed on the machine table 1 for driving the movable plate 51 to lift and lower; the linear driver 41 and the guiding component are both mounted on the movable plate 51; during operation: the lead screw module 53 drives the movable plate 51 to adjust the height of the rotary riveting mechanism 4, and under the action of the four guide columns 52, the rotary riveting mechanism 4 can be ensured to lift and lower smoothly.

[0036] Furthermore, the lead screw module 53 can be of a hand-crank type or an electric type. The hand-crank type has a low cost and can be directly manually operated, while the electric type has high precision but requires program adjustment, and it can be selected according to the precision.

[0037] Furthermore, the rotation driving assembly 3 includes a connecting shaft 31 vertically passing through the machine table 1, a support frame 32 disposed inside the machine table 1 and below the connecting shaft 31, a motor 33 vertically arranged on the support frame 32, and a coupling 34 for connecting the motor 33 and the connecting shaft 31; bearings 35 are sleeved on the connecting shaft 31 both above and below the machine table 1; the three-jaw chuck 2 is arranged at the top of the connecting shaft 31; in the present utility model, by arranging the connecting shaft 31 between the three-jaw chuck 2 and the motor 33, and bearings 35 are sleeved on the connecting shaft 31 both above and below the machine table 1 to bear the transverse shear force, reduce the force on the motor 33, thereby avoiding damage to the motor 33 and improving the service life.

[0038] Furthermore, a fixture 6 is further included; the outer surface of the fixture 6 is circular, and a profiling positioning cavity 61 corresponding to the shape of the product is arranged inside; a positioning convex edge 62 is further arranged at the top of the fixture 6; for some workpieces 7 with small sizes, special shapes or high surface precision, which are not convenient for the three-jaw chuck 2 to directly clamp, the fixture 6 can be used for transition; specifically, during work: first, place the workpiece 7 inside the fixture 6, and since the profiling positioning cavity 61 corresponding to the shape of the product is arranged inside the fixture 6, the workpiece 7 can be placed to rotate; then place the fixture 6 with the workpiece 7 on the three-jaw chuck 2 and perform positioning through the positioning convex edge 62.

[0039] Furthermore, the three-jaw chuck 2 is a pneumatic three-jaw chuck, which is convenient for manual and quick replacement of products.

[0040] Furthermore, a protective cover 11 with a front opening is arranged on the machine table 1; safety light curtains 12 are arranged on both sides of the front opening of the protective cover 11 to play a safety protection role.

[0041] Furthermore, a touch screen 13 and operation buttons are arranged on the front of the protective cover 11, and a three-color indicator light 14 is arranged on the top, which is convenient for displaying the working state of the device.

[0042] Furthermore, openable protective windows 15 are arranged on both sides and the back of the protective cover 11, which is convenient for maintenance and repair.

[0043] Furthermore, the protective window 15 is made of an acrylic plate of transparent material, which is convenient for observing the working condition.

[0044] Furthermore, casters 16 with a support function are arranged at the four corners of the bottom of the machine table 1; when transportation is needed, the feet can be retracted and the machine table 1 can be moved through the casters 16; during daily work, the feet can be put down to play a supporting role.

[0045] The above are only specific application examples of the present utility model, which do not constitute any limitation to the protection scope of the present utility model. Any technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of the protection of the present utility model.

Claims

1. An automatic riveting and closing machine, characterized in that: It comprises a machine platform, a three-jaw chuck vertically arranged on the machine platform for clamping a workpiece, a rotary drive assembly arranged in the machine platform for driving the three-jaw chuck to rotate, a riveting mechanism arranged on one side of the three-jaw chuck for riveting the workpiece, and a height adjustment assembly arranged on the machine platform for driving the riveting mechanism to rise and fall; The rotary riveting mechanism comprises a horizontally placed linear drive and a pressure wheel rotatably arranged at a driving end of the linear drive; a circle of riveting pressing parts is arranged on the surface of the pressure wheel.

2. The automatic riveting and closing machine according to claim 1, characterized in that: The rotary riveting mechanism also includes a guide assembly arranged between the linear drive and the pressure wheel; the guide assembly includes two parallel guide rails, a slider slidably arranged on the guide rails, a translation seat horizontally arranged on the two sliders, a slot arranged on the translation seat at the top of one end of the three-jaw chuck, a mounting rod partially located in the slot, and a pressure block arranged on the translation seat for locking the mounting rod; the driving end of the linear drive is connected to the translation seat; the pressure wheel is horizontally arranged at the outer end of the mounting rod.

3. The automatic riveting and closing machine according to claim 2, characterized in that: The cross section of the slot is V-shaped; the inner end portion of the mounting rod corresponds to the shape of the slot.

4. The automatic riveting and closing machine according to claim 3, characterized in that: The linear drive is an electric cylinder.

5. The automatic riveting and closing machine according to claim 4, characterized in that: The height adjustment assembly includes a movable plate horizontally arranged above the machine platform, a plurality of guide pillars vertically arranged on the machine platform and passing through the movable plate, and a screw module vertically arranged on the machine platform for driving the movable plate to rise and fall; the linear drive and the guide assembly are both installed on the movable plate.

6. The automatic riveting and closing machine according to claim 5, characterized in that: The screw rod module can be a manual type or an electric type.

7. The automatic riveting and closing machine according to any one of claims 1 to 6, characterized in that: The rotary drive assembly includes a connecting shaft vertically passing through the machine table, a support frame arranged in the machine table and below the connecting shaft, a motor vertically arranged on the support frame, and a coupling for connecting the motor and the connecting shaft; the connecting shaft is provided with bearings both above and below the machine table; the three-jaw chuck is arranged on the top of the connecting shaft.

8. The automatic riveting and closing machine according to claim 7, characterized in that: It also includes a jig; the outer surface of the jig is circular, and a contoured positioning cavity corresponding to the shape of the product is arranged inside; and a positioning convex edge is also arranged on the top of the jig.

9. The automatic riveting and closing machine according to claim 8, characterized in that: The three-jaw chuck is a pneumatic three-jaw chuck.

10. The automatic riveting and closing machine according to claim 1, characterized in that: The machine platform is provided with a protective cover with a front opening; the protective cover is provided with safety gratings on both sides of the front opening.

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