Pneumatic riveting equipment for contact

Abstract

The utility model provides pneumatic riveting equipment for a contact, belongs to the technical field of riveting, and solves the problem that a clamp in the prior art cannot well clamp a conducting rod. The device comprises a base, a support is arranged on the base, a telescopic air cylinder is installed on the support, the telescopic air cylinder is connected with a vertically-arranged driving rod, the lower end of the driving rod is connected with a conical head, two clamps are movably arranged on the base, the two clamps are connected with a driving mechanism used for driving the two clamps to move relatively, and each clamp comprises an installation base. A plurality of abutting rods located on the same horizontal plane are movably arranged in the mounting base in the moving direction, and a fixing mechanism used for pressing and fixing the abutting rods is arranged in the mounting base. The multiple abutting rods located on the same horizontal plane are movably arranged on the mounting base, and the lengths of the abutting rods moving out of the mounting base can be adjusted according to the shapes of the conducting rods, so that the abutting rods can be better attached to the outer walls of the conducting rods of different sizes, normal riveting operation is guaranteed, and the use cost of the clamp is reduced.

Description

A pneumatic riveting device for contacts Technical Field

[0001] This utility model belongs to the field of riveting technology, specifically to a pneumatic riveting device with a contact. Background Technology

[0002] In the production process of a vacuum interrupter, the moving and stationary contacts need to be riveted to the conductive rod to complete the contact installation. Because pneumatic riveting has a fast response speed and reduces energy consumption by more than 30%, it is suitable for high-frequency production. Therefore, pneumatic riveting equipment is selected for riveting the contacts.

[0003] Pneumatic riveting equipment is equipped with clamps to hold and fix the conductive rod during the contact riveting process, ensuring that the conductive rod is correctly aligned with the riveting equipment. However, when clamping small-sized conductive rods, the clamps cannot hold them well, causing the conductive rod to deflect during clamping or riveting, affecting the riveting operation. Using detachable clamps (with multiple sizes to adapt to different clamping conditions) would increase the cost of using the clamps. Therefore, it is necessary to design a pneumatic riveting equipment that can adapt to various clamping conditions. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a pneumatic riveting device for contacts. Several abutment rods on the same horizontal plane are movably arranged on the mounting base. The length of the abutment rods extending out of the mounting base can be adjusted according to the shape of the conductive rod, thereby better fitting the outer wall of conductive rods of different sizes, ensuring the normal operation of the riveting process, and reducing the cost of using the fixture.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A pneumatic riveting device for contacts includes a base, a bracket on the base, a telescopic cylinder mounted on the bracket, a vertically arranged drive rod connected to the telescopic cylinder, a conical head connected to the lower end of the drive rod, two sets of clamps movably mounted on the base, the two sets of clamps being connected to a drive mechanism for driving the relative movement of the two sets of clamps, each clamp including a mounting base, several abutment rods on the same horizontal plane movably mounted in the mounting base along the direction of movement, and a fixing mechanism for pressing and fixing the abutment rods in the mounting base.

[0007] Preferably, the fixing mechanism includes a working cavity disposed in the mounting base, a pressure plate movably disposed in the working cavity above the abutment rod, a first guide rod slidably connected to the top of the pressure plate, a tension spring connected to the mounting base and the pressure plate being sleeved on the first guide rod, and a screw threaded through the top of the mounting base extending into the working cavity and abutting against the pressure plate.

[0008] Preferably, the bottom of the pressure plate is provided with an arc-shaped groove that matches the abutment rod.

[0009] Preferably, the driving mechanism includes a first positive and negative lead screw rotatably connected to the base and a second guide rod arranged parallel to the first positive and negative lead screw. A movable seat that is slidably connected to the second guide rod is threaded onto the first positive and negative lead screw. A clamp is disposed on the movable seat. A motor is connected to the first positive and negative lead screw.

[0010] Preferably, each set of clamps includes two clamps spaced apart vertically. The upper clamp is rotatably connected to a stud that is threadedly connected to the movable seat. A nut is fixedly sleeved on the stud. The upper clamp is connected to a third guide rod that is slidably connected to the movable seat.

[0011] Preferably, the base is provided with a positioning switch that cooperates with the movable seat.

[0012] Preferably, the bracket includes a first support fixed on the base, a second support connected to the first support, and a support plate for mounting the telescopic cylinder connected to the second support.

[0013] Preferably, the bottom of the second support is provided with a fourth guide rod that is slidably connected to the first support, and the first support and the second support are threadedly connected with a second positive and negative screw. The upper end of the second positive and negative screw passes through the second support and is connected to a handwheel.

[0014] Preferably, the support plate is fixedly provided with a reinforcing plate connected to the second support.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] Several abutment rods are movably installed on the mounting base at the same horizontal plane. The length of the abutment rods that move out of the mounting base can be adjusted according to the shape of the conductive rod, so as to better fit the outer wall of conductive rods of different sizes, ensure the normal riveting operation, and reduce the cost of using the fixture. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a schematic diagram of the main view structure provided in an embodiment of the present utility model;

[0019] Figure 2 is a top view of the structure provided in an embodiment of the present utility model;

[0020] Figure 3 is a side view cross-sectional structural diagram of the clamp provided in the embodiment of this utility model;

[0021] Figure 4 is a magnified structural diagram of point A in Figure 3;

[0022] Figure 5 is a schematic diagram of the three-dimensional structure of the bracket provided in the embodiment of this utility model.

[0023] Reference numerals: 100-Conductive rod; 200-Connecting pipe; 300-Contact; 400-Chamfered groove; 1-Base; 2-Moving seat; 3-Position switch; 4-Motor; 5-First positive and negative lead screw; 6-Clamp; 601-Mounting seat; 602-Screw; 603-Abutting rod; 604-Pressure plate; 605-First guide rod; 606-Arc groove; 607-Tension spring; 608-Working chamber; 7-Stud; 8-Nut; 9-Conical head; 10-Drive rod; 11-Telescopic cylinder; 12-Bracket; 121-First support; 122-Second support; 123-Second positive and negative lead screw; 124-Reinforcing plate; 125-Support plate; 126-Fourth guide rod; 13-Second guide rod; 14-Third guide rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] The present invention will now be described in detail with reference to Figures 1-5.

[0028] Example

[0029] A pneumatic riveting device for contacts includes a base 1, a bracket 12 on the base 1, a telescopic cylinder 11 mounted on the bracket 12, a vertically arranged drive rod 10 connected to the telescopic cylinder 11, a conical head 9 connected to the lower end of the drive rod 10, two sets of clamps 6 movably arranged on the base 1, and a drive mechanism for driving the relative movement of the two sets of clamps 6 connected to the two sets of clamps 6, each clamp 6 including a mounting base 601, in which several abutment rods 603 on the same horizontal plane are movably arranged along the moving direction, and a fixing mechanism for pressing and fixing the abutment rods 603 is provided in the mounting base 601.

[0030] As shown in Figure 1, a connecting tube 200 with a diameter smaller than that of the conductive rod 100 is provided on the conductive rod 100. A contact 300 is fitted onto the connecting tube 200, and a chamfered groove 400 is provided on the end face of the contact 300. When the clamp 6 holds the conductive rod 100, the telescopic cylinder 11 moves the conical head 9 downwards via the drive rod 10. The conical head 9 aligns with and inserts into the connecting tube 200, causing the connecting tube 200 to expand and deflect outwards. Finally, the upper end of the connecting tube 200 deforms and fits against the chamfered groove 400, thus completing the assembly of the contact 300 and the conductive rod 100. The telescopic cylinder 11 is a pneumatically controlled telescopic cylinder to improve riveting efficiency.

[0031] Specifically: Adjust the length of the abutment rod 603 extending from the mounting base 601 according to the size of the conductive rod 100, then use the fixing mechanism to fix it, control the drive mechanism to drive the two sets of clamps 6 to approach and clamp the conductive rod 100; the telescopic cylinder 11 then moves the conical head 9 downward through the drive rod 10 to perform the riveting operation. When adjusting the abutment rod 603, loosen the fixing mechanism to allow the abutment rod 603 to move freely, place the conductive rod 100 to be installed between the two sets of clamps 6, control the drive rod 10 to slowly descend, and insert the conical head 9 into the connecting pipe 200 for positioning (at this time, the conductive rod 100 needs to be held steady by hand). Then, control the drive mechanism to drive the two sets of clamps 6 to approach each other. After the clamps 6 are in place, manually move all the abutment rods 603 to fit against the conductive rod 100, and then use the fixing mechanism to press and fix the abutment rods 603, thus completing the adjustment of the clamps 6.

[0032] The end of the abutment rod 603 near the conductive rod 100 is spherical to prevent the abutment rod 603 from scratching the abutment rod 603. This application also uses the abutment rod 603 to stably clamp some irregularly shaped structural parts.

[0033] The fixing mechanism includes a working cavity 608 disposed in the mounting base 601. A pressure plate 604 is movably disposed in the working cavity 608 above the abutment rod 603. A first guide rod 605 is connected to the top of the pressure plate 604 and is slidably connected to the mounting base 601. A tension spring 607 connected to the mounting base 601 and the pressure plate 604 is sleeved on the first guide rod 605. A screw 602 is threaded through the top of the mounting base 601 and extends into the working cavity 608 to abut against the pressure plate 604. The tension spring 607 pulls the pressure plate 604 upward away from the abutment rod 603 through its own tension, so that the abutment rod 603 can slide freely. When it is necessary to fix the abutment rod 603, the screw 602 is screwed down and abuts the pressure plate 604. Under the guidance of the first guide rod 605, the pressure plate 604 moves downward steadily. When the pressure plate 604 presses against the abutment rod 603, the fixation of the abutment rod 603 is completed.

[0034] The bottom of the pressure plate 604 is provided with an arc-shaped groove 606 that matches the abutment rod 603. The arc-shaped groove 606 can fit better against the surface of the abutment rod 603 and increase the fixing effect.

[0035] The driving mechanism includes a first positive and negative lead screw 5 rotatably connected to the base 1 and a second guide rod 13 arranged parallel to the first positive and negative lead screw 5. A movable seat 2 is threadedly connected to the first positive and negative lead screw 5 and slidably connected to the second guide rod 13. The clamp 6 is mounted on the movable seat 2. A motor 4 is connected to the first positive and negative lead screw 5. The motor 4 drives the first positive and negative lead screw 5 to rotate, and in conjunction with the second guide rod 13, the two movable seats 2 can move closer or further apart, thereby driving the clamp 6.

[0036] Each clamp 6 includes two clamps spaced vertically apart. The upper clamp 6 is rotatably connected to a stud 7 threadedly connected to the movable seat 2. A nut 8 is fixedly fitted on the stud 7. The upper clamp 6 is connected to a third guide rod 14 slidably connected to the movable seat 2. The two clamps spaced vertically apart form a clamp 6, thereby increasing the clamping stability of the conductive rod 100. The stud 7 can be rotated by the nut 8, and in conjunction with the third guide rod 14, the upper clamp 6 can be adjusted vertically to accommodate conductive rods 100 of different heights.

[0037] The base 1 is equipped with a positioning switch 3 that cooperates with the movable seat 2. The positioning switch 3 is connected to the motor 4 through a controller (the controller is existing technology and is not shown in the figure). When the movable seat 2 moves into position, it will touch the positioning switch 3, thereby controlling the motor 4 to stop working, so as to prevent the motor 4 from working continuously and forcing the abutment rod 603 to continuously press against the conductive rod 100 and deform and be damaged.

[0038] The bracket 12 includes a first support 121 fixed to the base 1, a second support 122 connected to the first support 121, and a support plate 125 for mounting the telescopic cylinder 11 connected to the second support 122. A fourth guide rod 126, slidably connected to the first support 121, is provided at the bottom of the second support 122. A second positive and negative screw 123 is threadedly connected to the first support 121 and the second support 122. The upper end of the second positive and negative screw 123 extends through the second support 122 and is connected to a handwheel. The handwheel facilitates rotation of the second positive and negative screw 123. After rotating the second positive and negative screw 123, the second support 122 can be adjusted vertically relative to the first support 121 in conjunction with the fourth guide rod 126, thereby adjusting the position of the telescopic cylinder 11 to accommodate the riveting of the conductive rod 100 and the contact 300 at different heights.

[0039] The support plate 125 is fixedly provided with a reinforcing plate 124 that is connected to the second support 122. The reinforcing plate 124 strengthens the connection between the support plate 125 and the second support 122, preventing the connection of the support plate 125 from warping and breaking due to the reaction force of riveting.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pneumatic riveting device for contacts, comprising a base (1), a bracket (12) provided on the base (1), a telescopic cylinder (11) mounted on the bracket (12), the telescopic cylinder (11) being connected to a vertically arranged drive rod (10), and a conical head (9) connected to the lower end of the drive rod (10), characterized in that, Two sets of clamps (6) are movably arranged on the base (1). The two sets of clamps (6) are connected to a driving mechanism for driving the relative movement of the two sets of clamps (6). The clamps (6) include a mounting base (601). Several abutment rods (603) on the same horizontal plane are movably arranged in the mounting base (601) along the moving direction. A fixing mechanism for pressing and fixing the abutment rods (603) is provided in the mounting base (601).

2. The pneumatic riveting device for contacts according to claim 1, characterized in that, The fixing mechanism includes a working cavity (608) disposed in the mounting base (601), a pressure plate (604) movably disposed in the working cavity (608) above the abutment rod (603), a first guide rod (605) slidably connected to the mounting base (601) is connected to the top of the pressure plate (604), a tension spring (607) connected to the mounting base (601) and the pressure plate (604) is sleeved on the first guide rod (605), and a screw rod (602) threaded through the top of the mounting base (601) and abutting the pressure plate (604) in the working cavity (608).

3. A pneumatic riveting apparatus for a contact according to claim 2, characterized in that The bottom of the pressure plate (604) is provided with an arc-shaped groove (606) that is compatible with the abutment rod (603).

4. A pneumatic riveting apparatus for a contact according to claim 1, characterized in that The driving mechanism includes a first positive and negative lead screw (5) rotatably connected to the base (1) and a second guide rod (13) arranged parallel to the first positive and negative lead screw (5). A movable seat (2) is threadedly connected to the first positive and negative lead screw (5) and slidably connected to the second guide rod (13). A clamp (6) is set on the movable seat (2). A motor (4) is connected to the first positive and negative lead screw (5).

5. A pneumatic riveting apparatus for a contact according to claim 4, characterized in that Each set of clamps (6) includes two clamps (6) spaced apart vertically. The upper clamp (6) is rotatably connected to a stud (7) that is threadedly connected to the movable seat (2). A nut (8) is fixedly sleeved on the stud (7). The upper clamp (6) is connected to a third guide rod (14) that is slidably connected to the movable seat (2).

6. A pneumatic riveting apparatus for a contact according to claim 4, characterized in that The base (1) is provided with a positioning switch (3) that cooperates with the movable seat (2).

7. A pneumatic riveting apparatus for a contact according to claim 1, characterized in that The bracket (12) includes a first support (121) fixed on the base (1), a second support (122) connected to the first support (121), and a support plate (125) for mounting the telescopic cylinder (11) connected to the second support (122).

8. A pneumatic riveting apparatus for a contact according to claim 7, characterized in that The bottom of the second support (122) is provided with a fourth guide rod (126) that is slidably connected to the first support (121). The first support (121) and the second support (122) are threadedly connected with a second positive and negative screw (123). The upper end of the second positive and negative screw (123) passes through the second support (122) and is connected to a handwheel.

9. A pneumatic riveting apparatus for a contact according to claim 7, characterized in that The support plate (125) is fixedly provided with a reinforcing plate (124) connected to the second support (122).

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