Metal plate riveting machine accurate in positioning

Abstract

The invention discloses an accurate-positioning metal plate riveting machine, and relates to the technical field of plate riveting machines, the accurate-positioning metal plate riveting machine comprises a rack, and the rack is provided with a frame body with a bearing function; the riveting and stamping mechanism is fixedly mounted on the outer surface of the rack; the righting and expanding mechanism is used for pre-fixing and righting the rivets, and the righting and expanding mechanism is arranged at the output end of the riveting and stamping mechanism; and the workbench is welded on the outer surface of the rack and is positioned below the centralizing and expanding mechanism. According to the metal plate riveting machine accurate in positioning, the head of a rivet is supported and fixed through the rivet positioning mechanism, a metal plate is limited to the workbench through cooperation of the rivet positioning mechanism and the plate positioning mechanism, the riveting stamping mechanism and the righting and expanding mechanism are used in cooperation, the rod of the rivet is subjected to front righting and positioning, then the rivet is stamped, and the riveting precision is improved. Therefore, the riveting quality and the riveting precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate riveting machines, and in particular to a metal plate riveting machine with precise positioning. Background Art

[0002] Riveting machine (also known as riveting machine, rotary riveting machine, riveting machine, rolling riveting machine, etc.) is a new type of riveting equipment developed based on the principle of cold rolling. It refers to mechanical equipment that can fix objects by riveting. It has the characteristics of compact structure, stable performance, convenient and safe operation. The riveting machine mainly relies on rotation or pressure to complete assembly. It is mainly used in occasions that require riveting. Common models include pneumatic, hydraulic and electric, single-head and double-head specifications. In the processing of metal plates, riveting machines are needed to rivet and fix multiple plates.

[0003] When the existing riveting machine rivets metal plates, since the rivets need to be deformed by stamping to achieve the purpose of riveting, the rivets lack effective positioning measures during riveting and are easily tilted under the influence of pressure, which in turn affects the riveting accuracy and quality of the rivets, resulting in reduced riveting efficiency of the metal plates. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A metal sheet riveting machine with precise positioning, comprising:

[0005] The rack has a load-bearing frame and is a structure that provides support and fixes other components;

[0006] A riveting punching mechanism, which is fixedly mounted on the outer surface of the frame and is used to apply pressure to deform the rivet and complete riveting;

[0007] A straightening and widening mechanism, which is used to pre-fix and straighten the rivet, and is arranged on the output end of the riveting and punching mechanism, and is used to straighten and expand the deformation range of the rivet;

[0008] A workbench, which is welded on the outer surface of the frame and is located below the straightening and widening mechanism. A placement slot is provided on the top of the workbench. The workbench is used to carry the material to be riveted and provide a working platform and an operating area;

[0009] The riveting and stamping mechanism includes a hydraulic cylinder, which provides a power source for the stamping action. The hydraulic cylinder is fixedly installed on the top of the frame. A stamping table is fixedly connected to the output shaft of the hydraulic cylinder. A stamping rod is fixedly connected to the bottom of the stamping table. The stamping table and the stamping rod are used to transmit the pressure of the hydraulic cylinder. A riveting punch is fixedly connected to the bottom of the stamping rod. The riveting punch is used to stamp the rivet to deform it.

[0010] Among them, the straightening and expanding mechanism includes a fixed sleeve, which plays a connecting role. The fixed sleeve is fixedly installed on the outer surface of the stamping table. The bottom surface of the fixed sleeve is fixedly connected with an elastic rod, which provides elastic support and reset functions. The bottom surface of the elastic rod is fixedly connected with a straightening piece, which is used to help the rivet maintain the correct position. The straightening piece is slidably sleeved on the outside of the stamping rod, and the bottom surface of the straightening piece is fixedly connected with a reset piece. The bottom of the reset piece is fixedly connected with an expanding piece, which is used to reset the expanding piece to an initial position. The expanding piece is used to expand the deformation range of the rivet. A sealing ring is fixedly connected to the inner wall of the expanding piece, and the sealing ring is located below the straightening piece. The sealing ring is used to cooperate with the straightening piece to limit the position of the rivet, thereby achieving the effect of positioning and straightening.

[0011] Preferably, a rivet positioning mechanism is fixedly installed in the middle of the upper surface of the workbench, the rivet positioning mechanism is used to support the head of the rivet and accurately locate the position of the rivet, the bottom surface of the rivet positioning mechanism is fixedly connected to the bottom surface of the inner wall of the placement groove, the rivet positioning mechanism and the punching rod are on the same axis, and a plate positioning mechanism is fixedly connected to the outer surface of the frame, the plate positioning mechanism is used to locate and fix the position of the plate.

[0012] Preferably, the straightening member includes an outer ring plate, the top of the outer ring plate is fixedly connected to the bottom surface of the elastic rod, the outer ring plate is used to contact the elastic rod to connect the structures, and a movable sleeve is fixedly connected to the outer surface of the outer ring plate, the bottom surface of the movable sleeve is fixedly connected to a limiting bucket shell, the movable sleeve and the limiting bucket shell are slidably sleeved on the outside of the stamping rod, and the movable sleeve and the limiting bucket shell are used to be sleeved on the outside of the stamping rod so that the riveting punch can be ejected to complete the stamping riveting action.

[0013] Preferably, the reset member includes a sliding rod, the top of the sliding rod is fixedly connected to the inner wall of the outer ring plate, the bottom end of the outer surface of the sliding rod is slidably connected to an outer cylinder, the sliding rod is used to slide in the outer cylinder to achieve the guiding purpose, the bottom surface of the outer cylinder is fixedly connected to the top of the expansion member, the top of the outer cylinder is fixedly connected to a compression spring, the compression spring is used to provide elastic support and the elastic force required for reset, the top of the compression spring is fixedly connected to the bottom surface of the outer ring plate, and the compression spring is movably sleeved on the outside of the sliding rod.

[0014] Preferably, the expansion member includes a gasket, which is used to contact the metal plate to assist in fixing. The top inner wall of the gasket is fixedly connected to the bottom surface of the outer tube. A convex block is fixedly connected to the inner wall of the gasket. The convex block is used to promote the deformation of the rivet, making it easier to deform and increasing the degree of deformation. An accommodating groove is provided on the outer surface of the convex block. The accommodating groove is used to disperse the stress generated during the deformation of the rivet to a larger area to reduce local stress concentration. The sealing ring is fixedly mounted on the inner surface of the gasket.

[0015] Preferably, a clamping block is fixedly connected to the outer surface of the limiting bucket shell, and a clamping groove is provided on the upper surface of the gasket ring. The clamping block is used to cooperate with the clamping groove to achieve the purpose of locking the limiting bucket shell, and the outer surface of the clamping block is adapted to the inner wall of the clamping groove.

[0016] Preferably, the rivet positioning mechanism includes an outer shell, the bottom surface of the outer shell is fixedly connected to the bottom surface of the inner wall of the placement groove, the bottom surface of the inner wall of the outer shell is fixedly connected to an arc-shaped pad, the arc-shaped pad is used to support and position the arc-shaped head of the rivet, the top of the arc-shaped pad is fixedly connected to a positioning arc plate, the positioning arc plate is used to position the rod of the rivet, a limiting rubber strip is fixedly connected to the outer surface of the positioning arc plate, the limiting rubber strip is used to limit the position of the positioning arc plate and provide buffering, the outer surface of the limiting rubber strip is fixedly connected to the inner surface of the outer shell, and the limiting rubber strip is symmetrically arranged about the center line of the positioning arc plate, a locking piece is fixedly connected to the middle part of the outer surface of the positioning arc plate, one end of the locking piece is fixedly connected to the inner surface of the outer shell, and the locking piece is used to lock and limit the position of the positioning arc plate.

[0017] Preferably, the locking member includes a sleeve shell, one side of which is fixedly connected to the outer surface of the positioning arc plate, the sleeve shell is made of soft material, and an elastic bent plate is fixedly connected to the inner surface of the sleeve shell, the elastic bent plate provides the force required for elastic deformation, forcing the positioning arc plate to contact the rivet surface, and the sleeve shell and the elastic bent plate are both fixedly connected to the inner surface of the outer shell.

[0018] Preferably, a fixing seat is fixedly connected to the inner surface of the elastic bent plate, an outer cylinder is fixedly connected to one side surface of the fixing seat, a pressure rod is slidably connected to the inner wall of the outer cylinder, the pressure rod and the outer cylinder are used to limit the deformation of the elastic bent plate, a pressure block is fixedly connected to one end of the pressure rod, and the outer surface of the pressure block is fixedly connected to the inner surface of the sleeve.

[0019] Preferably, the plate positioning mechanism includes a mounting plate, the mounting plate is fixedly mounted on the outer surface of the frame, symmetrically arranged cylinders are fixedly mounted on the outer surface of the mounting plate, the mounting plate is used to install the cylinders, a pressure plate is fixedly connected to the output shaft of the cylinder, the pressure plate is used to press the plate to ensure accurate positioning, a fitting pad is fixedly connected to the bottom of the pressure plate, the fitting pad is used to increase the contact area between the plate and the pressure plate and provide buffering, a deformation groove is provided on the bottom surface of the fitting pad, the deformation groove is used to increase the contact surface friction when the fitting pad is deformed.

[0020] The present invention provides a metal sheet riveting machine with precise positioning, which has the following beneficial effects:

[0021] 1. This metal sheet riveting machine with precise positioning supports and fixes the head of the rivet through the rivet positioning mechanism, and cooperates with the plate positioning mechanism to limit the metal plate on the workbench. The riveting punching mechanism and the straightening and expanding mechanism are used in coordination to perform pre-positioning straightening and positioning on the rivet rod, and then the rivet is punched to complete the riveting action, thereby improving the quality and precision of the riveting.

[0022] 2. The metal sheet riveting machine with precise positioning, through the expansion piece under the action of the punching table, is sleeved on the outside of the rivet, cooperates with the sealing ring and the limiting bucket shell to frame the position of the rivet, and cooperates with the engagement of the clamping block and the clamping slot to lock the limiting bucket shell, and uses the punching rod and the riveting punch to deform the punching rivet, and at the same time, the deformation cavity formed by the sealing ring and the gasket ring is used to deform the rivet and fill it, and cooperates with the convex block and the extension groove to promote the deformation of the rivet, making it easier to deform and increase the deformation degree, thereby improving the fixing quality of the rivet.

[0023] 3. The metal sheet riveting machine with precise positioning contacts the surface of the metal sheet through the gasket, so that pressure is applied to the reset part and the outer ring plate, and the movable sleeve slides outside the punching rod to promote the downward movement of the riveting punch to realize the punching riveting action. In addition, the deformation of the elastic rod caused by the outer ring plate is utilized. After the riveting action is completed, it works together with the compression spring to cooperate with the rebound force of the elastic rod and the compression spring to realize the reset of the gasket, so as to ensure the accuracy of the subsequent riveting action.

[0024] Fourth, the metal sheet riveting machine with precise positioning, through the setting of the arc-shaped pad, adapts to the head of the rivet, and cooperates with the top support of the positioning arc plate to contact the rivet rod and head, and supports and limits the rivet, thereby ensuring the precise positioning of the metal sheet during riveting.

[0025] 5. This metal sheet riveting machine with precise positioning ensures the positioning position of the rivet by making the positioning arc plate contact with the outside of the rivet and limiting the positioning arc plate with the limiting rubber strip, and then uses the rebound support of the elastic bent plate to make the positioning arc plate closely contact with the outside of the rivet to ensure the fixing effect of the rivet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the external structure of a metal sheet riveting machine with precise positioning according to the present invention;

[0027] Figure 2 It is a three-dimensional structural schematic diagram of the frame, riveting and punching mechanism, straightening and expanding mechanism and plate positioning mechanism of the present invention;

[0028] Figure 3 It is a partial structural schematic diagram of the riveting and punching mechanism and the straightening and expanding mechanism of the present invention;

[0029] Figure 4 It is a schematic diagram of the partial cross-section structure of the riveting and punching mechanism and the straightening and expanding mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the straightening and expanding mechanism of the present invention;

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of the expansion member and the sealing ring of the present invention;

[0032] Figure 7 It is a three-dimensional structural schematic diagram of the workbench and the rivet positioning mechanism of the present invention;

[0033] Figure 8 It is a three-dimensional structural schematic diagram of the rivet positioning mechanism of the present invention;

[0034] Fig. 9 It is a schematic diagram of a partial cross-section structure of a rivet positioning mechanism of the present invention;

[0035] Fig.10 It is a three-dimensional structural schematic diagram of the positioning arc plate, the limiting rubber strip and the locking member of the present invention;

[0036] Fig.11 It is a partial cross-sectional structural schematic diagram of the positioning arc plate and the locking member of the present invention;

[0037] Fig.12 It is a three-dimensional structural schematic diagram of the plate positioning mechanism of the present invention.

[0038] In the figure: 1, frame; 2, riveting and stamping mechanism; 21, hydraulic cylinder; 22, stamping table; 23, stamping rod; 24, riveting punch; 3, straightening and expanding mechanism; 31, fixed sleeve; 32, straightening member; 321, outer ring plate; 322, movable sleeve; 323, limit bucket shell; 324, clamping block; 33, elastic rod; 34, reset member; 341, outer cylinder; 342, sliding rod; 343, compression spring; 35, expanding member; 351, gasket; 352, clamping groove; 3 53. convex block; 354. extension groove; 36. sealing ring; 4. workbench; 5. rivet positioning mechanism; 51. outer shell; 52. arc-shaped cushion seat; 53. positioning arc plate; 54. limiting rubber strip; 55. locking piece; 551. sleeve shell; 552. elastic bending plate; 553. fixing seat; 554. pressure block; 555. pressure rod; 556. outer cylinder; 6. plate positioning mechanism; 61. mounting plate; 62. cylinder; 63. pressure plate; 64. fitting pad; 65. deformation groove. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0040] The first embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.12 As shown, the present invention provides a technical solution: a metal sheet riveting machine with precise positioning, comprising:

[0041] A frame 1, wherein the frame 1 has a frame body for bearing;

[0042] A riveting and punching mechanism 2, wherein the riveting and punching mechanism 2 is fixedly mounted on the outer surface of the frame 1;

[0043] A straightening and widening mechanism 3, which is used for pre-fixing and straightening the rivet, and is arranged on the output end of the riveting and punching mechanism 2;

[0044] A workbench 4 is welded on the outer surface of the frame 1 and is located below the straightening and expanding mechanism 3. A placement groove is provided on the top of the workbench 4. A rivet positioning mechanism 5 is fixedly installed in the middle of the upper surface of the workbench 4. The head of the rivet is supported and fixed by the rivet positioning mechanism 5. The bottom surface of the rivet positioning mechanism 5 is fixedly connected to the bottom surface of the inner wall of the placement groove. The rivet positioning mechanism 5 and the punching rod 23 are on the same axis. A plate positioning mechanism 6 is fixedly connected to the outer surface of the frame 1. The plate positioning mechanism 6 includes a mounting plate 61. The mounting plate 61 is fixedly installed on the frame 1 On the outer surface of the mounting plate 61, a symmetrically arranged air cylinder 62 is fixedly installed, and a pressing plate 63 is fixedly connected to the output shaft of the cylinder 62, and a fitting pad 64 is fixedly connected to the bottom of the pressing plate 63. A deformation groove 65 is provided on the bottom surface of the fitting pad 64. The pressing plate 63 is driven to move by the output shaft of the cylinder 62 to contact the surface of the metal sheet, and the metal sheet is limited on the workbench 4. Then, the riveting and punching mechanism 2 and the straightening and widening mechanism 3 are used in coordination to perform front straightening and positioning on the rod of the rivet, and then the rivet is punched to complete the riveting action;

[0045] The riveting and punching mechanism 2 includes a hydraulic cylinder 21, which is fixedly mounted on the top of the frame 1. A punching table 22 is fixedly connected to the output shaft of the hydraulic cylinder 21, a punching rod 23 is fixedly connected to the bottom of the punching table 22, and a riveting punch 24 is fixedly connected to the bottom of the punching rod 23. The output shaft of the hydraulic cylinder 21 is used to drive the punching table 22 and the punching rod 23 to move, and the riveting punch 24 is used to contact the rivet rod to deform it, thereby completing the riveting action.

[0046] Among them, the straightening and expanding mechanism 3 includes a fixed sleeve 31, which is fixedly installed on the outer surface of the punching table 22, and the bottom surface of the fixed sleeve 31 is fixedly connected with an elastic rod 33, and the bottom surface of the elastic rod 33 is fixedly connected with a straightening piece 32, and the straightening piece 32 is slidably sleeved on the outside of the punching rod 23, and the bottom surface of the straightening piece 32 is fixedly connected with a reset piece 34, and the bottom of the reset piece 34 is fixedly connected with an expanding piece 35, and a sealing ring 36 is fixedly connected to the inner wall of the expanding piece 35, and the sealing ring 36 is located below the straightening piece 32. Under the action of the punching table 22, the expanding piece 35 is sleeved on the outside of the rivet, and the sealing ring 36 and the straightening piece 32 are used to frame the position of the rivet, and the punching rod 23 and the riveting punch 24 cooperate to deform the punching rivet, and the sealing ring 36 and the expanding piece 35 cooperate to form a deformation cavity, so that the rivet is deformed and filled therein.

[0047] During operation, the staff will pass the rivet rod through the hole on the metal plate, and then place the rivet in the rivet positioning mechanism 5. Then, the output shaft of the cylinder 62 is used to extend and retract the pressure plate 63 to move and contact the surface of the metal plate to limit the metal plate on the workbench 4. The expansion member 35 is sleeved on the outside of the rivet under the action of the punching table 22. The position of the rivet is framed by the sealing ring 36 and the straightening member 32. The output shaft of the hydraulic cylinder 21 is used to drive the punching table 22 and the punching rod 23 to move, and the riveting punch 24 is used to contact the rivet rod to deform it and complete the riveting action. The sealing ring 36 and the expansion member 35 are used to form a deformation cavity, so that the rivet is deformed and filled therein to complete the riveting action, and the metal plate can be removed from the workbench 4.

[0048] The second embodiment is based on the first embodiment. Figures 2 to 6 As shown, the straightening member 32 includes an outer ring plate 321, the top of the outer ring plate 321 is fixedly connected to the bottom surface of the elastic rod 33, and a movable sleeve 322 is fixedly connected to the outer surface of the outer ring plate 321, and the bottom surface of the movable sleeve 322 is fixedly connected to the limiting bucket shell 323, and the movable sleeve 322 and the limiting bucket shell 323 are slidably sleeved on the outside of the punching rod 23, and the reset member 34 includes a sliding rod 342, and the top of the sliding rod 342 is fixedly connected to the inner wall of the outer ring plate 321 The outer surface bottom end of the slide rod 342 is slidably connected with an outer cylinder 341, the bottom surface of the outer cylinder 341 is fixedly connected to the top of the expansion member 35, the top of the outer cylinder 341 is fixedly connected with a compression spring 343, the top of the compression spring 343 is fixedly connected to the bottom surface of the outer ring plate 321, and the compression spring 343 is movably sleeved on the outside of the slide rod 342, and is sleeved on the outside of the rivet under the action of the expansion member 35 under the action of the stamping table 22, and cooperates with the sealing ring 36 and the limiting bucket shell 323 to frame the position of the rivet;

[0049] The expansion member 35 includes a gasket 351, the top inner wall of the gasket 351 is fixedly connected to the bottom surface of the outer cylinder 341, a convex block 353 is fixedly connected to the inner wall of the gasket 351, and a tolerance groove 354 is provided on the outer surface of the convex block 353. The sealing ring 36 is fixedly installed on the inner surface of the gasket 351. The deformation cavity formed by the sealing ring 36 and the gasket 351 is used to deform the rivet and fill it. The convex block 353 and the tolerance groove 354 promote the deformation of the rivet, making it easier to deform and increase the deformation degree. The outer surface of the limiting bucket shell 323 is fixedly connected with a clamping block 324, and the upper surface of the gasket 351 is provided with a There is a slot 352, and the limiting bucket shell 323 is locked by the engagement of the block 324 with the slot 352. The outer surface of the block 324 is adapted to the inner wall of the slot 352, and contacts the surface of the metal plate through the gasket 351, so that pressure is applied to the reset member 34 and the outer ring plate 321, so that the movable sleeve 322 slides outside the stamping rod 23, promoting the downward movement of the riveting punch 24 to realize the stamping and riveting action, and utilizing the deformation of the elastic rod 33 caused by the outer ring plate 321. After the riveting action is completed, it works together with the compression spring 343 to cooperate with the resilience of the elastic rod 33 and the compression spring 343 to realize the reset of the gasket 351.

[0050] During operation, the gasket 351 contacts the surface of the metal sheet, and cooperates with the sealing ring 36 and the limiting bucket shell 323 to frame the position of the rivet, and applies pressure to the reset piece 34 and the outer ring plate 321, so that the movable sleeve 322 slides outside the punching rod 23, promoting the downward movement of the riveting punch 24 to realize the punching and riveting action, and the limiting bucket shell 323 is locked by the engagement of the clamping block 324 and the clamping groove 352, and then the deformation cavity formed by the sealing ring 36 and the gasket 351 is used to deform the rivet and fill it, and cooperate with the convex block 353 and the extension groove 354 to promote the deformation of the rivet, making it easier to deform and increasing the degree of deformation.

[0051] The third embodiment is based on the first and second embodiments. Figures 7 to 11 As shown, the rivet positioning mechanism 5 includes an outer shell 51, the bottom surface of the outer shell 51 is fixedly connected to the bottom surface of the inner wall of the placement groove, the inner wall bottom surface of the outer shell 51 is fixedly connected to an arc-shaped cushion seat 52, the top of the arc-shaped cushion seat 52 is fixedly connected to a positioning arc plate 53, the outer surface of the positioning arc plate 53 is fixedly connected to a limiting rubber strip 54, the outer surface of the limiting rubber strip 54 is fixedly connected to the inner surface of the outer shell 51, and the limiting rubber strip 54 is symmetrically arranged about the center line of the positioning arc plate 53, the middle part of the outer surface of the positioning arc plate 53 is fixedly connected to a locking piece 55, one end of the locking piece 55 is fixedly connected to the inner surface of the outer shell 51, the arc-shaped cushion seat 52 is adapted to the head of the rivet, and the top support of the positioning arc plate 53 is matched with the rivet rod and the head, so as to support and limit the rivet;

[0052] The locking member 55 includes a sleeve 551, one side of which is fixedly connected to the outer surface of the positioning arc plate 53. The sleeve 551 is made of soft material, and the positioning arc plate 53 is limited by the contact between the positioning arc plate 53 and the outside of the rivet in cooperation with the limiting rubber strip 54 to ensure the positioning position of the rivet. An elastic bent plate 552 is fixedly connected to the inner surface of the sleeve 551, and the sleeve 551 and the elastic bent plate 552 are both fixedly connected to the inner surface of the outer shell 51. A fixing seat 553 is fixedly connected to the inner surface of the elastic bent plate 552, and an outer cylinder 556 is fixedly connected to the surface of one side of the fixing seat 553. A pressure rod 555 is slidably connected to the inner wall of the outer cylinder 556, and a pressure block 554 is fixedly connected to one end of the pressure rod 555. The outer surface of the pressure block 554 is fixedly connected to the inner surface of the sleeve 551. The rebound support of the elastic bent plate 552 is used to make the positioning arc plate 53 in close contact with the outside of the rivet to ensure the fixing effect of the rivet.

[0053] During operation, the arc-shaped cushion seat 52 is adapted to and supports the head of the rivet, and the positioning arc plate 53 is in contact with the surface of the rivet rod under the rebound support of the elastic bent plate 552. The rivet is limited and positioned in cooperation with the setting of the positioning arc plate 53.

[0054] The following is a detailed description of the working principle of this precisely positioned metal sheet riveting machine.

[0055] When in use, the staff will pass the rivet rod through the hole on the metal plate, and then place the rivet in the outer shell 51, and use the arc-shaped cushion seat 52 to adapt and support the head of the rivet, and use the positioning arc plate 53 to contact the surface of the rivet rod under the rebound support of the elastic bent plate 552, and cooperate with the setting of the positioning arc plate 53 to limit and position the rivet, and then use the output shaft of the cylinder 62 to drive the pressure plate 63 to move and contact the surface of the metal plate, so as to limit the metal plate on the workbench 4, and contact the surface of the metal plate through the gasket 351, cooperate with the sealing ring 36 and the limiting bucket shell 323 to frame the position of the rivet, and apply pressure to the reset member 34 and the outer ring plate 321, so that The movable sleeve 322 slides outside the punching rod 23, and the output shaft of the hydraulic cylinder 21 is used to drive the punching table 22 and the punching rod 23 to move, and the riveting punch 24 is used to contact the rivet rod to deform it and complete the riveting action. The limiting bucket shell 323 is locked by the engagement of the clamping block 324 and the clamping groove 352, and then the deformation cavity formed by the sealing ring 36 and the gasket ring 351 is used to deform the rivet and fill it. The convex block 353 and the tolerance groove 354 are used to promote the deformation of the rivet, making it easier to deform and increasing the deformation degree. The sealing ring 36 and the expansion piece 35 are used to form a deformation cavity, so that the rivet is deformed and filled. After the riveting action is completed, the metal sheet can be removed from the workbench 4.

[0056] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A metal sheet riveting machine with precise positioning, characterized in that: include: A frame (1), the frame (1) having a frame body with a load-bearing function; A riveting and punching mechanism (2), the riveting and punching mechanism (2) being fixedly mounted on the outer surface of the frame (1); A straightening and widening mechanism (3), the straightening and widening mechanism (3) is used to pre-fix and straighten the rivet, and the straightening and widening mechanism (3) is arranged on the output end of the riveting and punching mechanism (2); A workbench (4), the workbench (4) is welded on the outer surface of the frame (1) and is located below the straightening and expanding mechanism (3), and a placement groove is provided on the top of the workbench (4); The riveting and punching mechanism (2) comprises a hydraulic cylinder (21), the hydraulic cylinder (21) is fixedly mounted on the top of the frame (1), a punching platform (22) is fixedly connected to the output shaft of the hydraulic cylinder (21), a punching rod (23) is fixedly connected to the bottom of the punching platform (22), and a riveting punch (24) is fixedly connected to the bottom of the punching rod (23); The straightening and expanding mechanism (3) comprises a fixed sleeve (31), wherein the fixed sleeve (31) is fixedly mounted on the outer surface of the punching platform (22), the bottom surface of the fixed sleeve (31) is fixedly connected to an elastic rod (33), the bottom surface of the elastic rod (33) is fixedly connected to a straightening member (32), the straightening member (32) is slidably sleeved on the outside of the punching rod (23), the bottom surface of the straightening member (32) is fixedly connected to a reset member (34), the bottom of the reset member (34) is fixedly connected to an expanding member (35), the inner wall of the expanding member (35) is fixedly connected to a sealing ring (36), and the sealing ring (36) is located below the straightening member (32).

2. The metal sheet riveting machine with precise positioning according to claim 1, characterized in that: A rivet positioning mechanism (5) is fixedly installed in the middle of the upper surface of the workbench (4), the bottom surface of the rivet positioning mechanism (5) is fixedly connected to the bottom surface of the inner wall of the placement groove, the rivet positioning mechanism (5) and the punching rod (23) are on the same axis, and a plate positioning mechanism (6) is fixedly connected to the outer surface of the frame (1).

3. The metal sheet riveting machine with precise positioning according to claim 2, characterized in that: The straightening member (32) comprises an outer ring plate (321), the top of the outer ring plate (321) is fixedly connected to the bottom surface of the elastic rod (33), and a movable sleeve (322) is fixedly connected to the outer surface of the outer ring plate (321), and the bottom surface of the movable sleeve (322) is fixedly connected to a limiting bucket shell (323), and the movable sleeve (322) and the limiting bucket shell (323) are slidably sleeved on the outside of the punching rod (23).

4. The metal sheet riveting machine with precise positioning according to claim 3, characterized in that: The reset member (34) includes a slide rod (342), the top of the slide rod (342) is fixedly connected to the inner wall of the outer ring plate (321), the bottom end of the outer surface of the slide rod (342) is slidably connected to the outer cylinder (341), the bottom surface of the outer cylinder (341) is fixedly connected to the top of the expansion member (35), the top of the outer cylinder (341) is fixedly connected to a compression spring (343), the top of the compression spring (343) is fixedly connected to the bottom surface of the outer ring plate (321), and the compression spring (343) is movably sleeved on the outside of the slide rod (342).

5. The metal sheet riveting machine with precise positioning according to claim 4, characterized in that: The expansion member (35) comprises a gasket (351), the top inner wall of the gasket (351) is fixedly connected to the bottom surface of the outer cylinder (341), a convex block (353) is fixedly connected to the inner wall of the gasket (351), an extension groove (354) is provided on the outer surface of the convex block (353), and the sealing ring (36) is fixedly mounted on the inner surface of the gasket (351).

6. The metal sheet riveting machine with precise positioning according to claim 5, characterized in that: A clamping block (324) is fixedly connected to the outer surface of the limiting bucket shell (323), a clamping groove (352) is provided on the upper surface of the gasket ring (351), and the outer surface of the clamping block (324) is matched with the inner wall of the clamping groove (352).

7. The metal sheet riveting machine with precise positioning according to claim 2, characterized in that: The rivet positioning mechanism (5) comprises an outer shell (51), the bottom surface of the outer shell (51) is fixedly connected to the bottom surface of the inner wall of the placement groove, the bottom surface of the inner wall of the outer shell (51) is fixedly connected to an arc-shaped cushion seat (52), the top of the arc-shaped cushion seat (52) is fixedly connected to a positioning arc plate (53), a limiting rubber strip (54) is fixedly connected to the outer surface of the positioning arc plate (53), the outer surface of the limiting rubber strip (54) is fixedly connected to the inner surface of the outer shell (51), and the limiting rubber strip (54) is symmetrically arranged about the center line of the positioning arc plate (53), a locking piece (55) is fixedly connected to the middle part of the outer surface of the positioning arc plate (53), and one end of the locking piece (55) is fixedly connected to the inner surface of the outer shell (51).

8. The metal sheet riveting machine with precise positioning according to claim 7, characterized in that: The locking member (55) comprises a sleeve (551), one side of which is fixedly connected to the outer surface of the positioning arc plate (53), the sleeve (551) is made of soft material, an elastic bent plate (552) is fixedly connected to the inner surface of the sleeve (551), and the sleeve (551) and the elastic bent plate (552) are both fixedly connected to the inner surface of the outer shell (51).

9. The metal sheet riveting machine with precise positioning according to claim 8, characterized in that: A fixing seat (553) is fixedly connected to the inner surface of the elastic bent plate (552), an outer cylinder (556) is fixedly connected to a side surface of the fixing seat (553), a pressure rod (555) is slidably connected to the inner wall of the outer cylinder (556), a pressure block (554) is fixedly connected to one end of the pressure rod (555), and the outer surface of the pressure block (554) is fixedly connected to the inner surface of the sleeve (551).

10. The metal sheet riveting machine with precise positioning according to claim 2, characterized in that: The plate positioning mechanism (6) comprises a mounting plate (61), wherein the mounting plate (61) is fixedly mounted on the outer surface of the frame (1), and a symmetrically arranged cylinder (62) is fixedly mounted on the outer surface of the mounting plate (61), and a pressure plate (63) is fixedly connected to the output shaft of the cylinder (62), and a fitting pad (64) is fixedly connected to the bottom of the pressure plate (63), and a deformation groove (65) is provided on the bottom surface of the fitting pad (64).

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