Positioning clamp for production of high-speed rail seat armrest

Abstract

The utility model discloses a high-speed rail seat armrest production positioning clamp which comprises a bottom plate, a first sliding groove is formed in the top of the bottom plate, an adjusting mechanism is arranged in the bottom plate, a moving plate is arranged at the top of the adjusting mechanism, a rotating shaft is rotatably connected to the interior of the moving plate, a mounting hole is formed in the moving plate, and the rotating shaft is rotatably connected to the interior of the moving plate. According to the device, the screw rod is driven by the hand wheel to drive the sliding block and the moving plate to move cooperatively, self-adaptive clamping of the clamping block on the high-speed rail seat armrest is achieved, the clamping block is designed to be linked with the rope through the rotating shaft, elastic adjustment of the spring is matched, and the fitting degree can be automatically adjusted according to the angle of the inner side of the armrest; according to the device, the stress in the clamping process is ensured to be uniform, the structural stability in the welding process is enhanced, the device supports repeated positioning after the high-speed rail seat armrest is overturned, welding can be completed without replacing a clamp, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of positioning fixture technology, and specifically relates to a positioning fixture for the production of high-speed rail seat armrests. Background Technology

[0002] The armrests of high-speed rail seats are mainly used to rest one's hands, making passengers more comfortable and separating the two sides of the seats to prevent others from crowding each other. In the production process of high-speed rail seat armrests, welding is a key process to ensure structural strength and product quality.

[0003] High-speed rail seat armrests consist of upper and lower panels and connecting parts. They are usually assembled and fixed manually by spot welding, and then fully welded and sealed manually. To improve welding efficiency, welding robots are used for full welding and sealing. However, traditional welding fixtures cannot adapt to the curvature changes of the inner side of the armrest, resulting in uneven clamping force and potential welding deformation. To solve the above problems, we provide a positioning fixture for the production of high-speed rail seat armrests. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for the production of high-speed rail seat armrests, so as to solve the problem mentioned in the background art that traditional welding fixtures cannot adapt to the curvature changes of the inner side of the armrest, resulting in uneven local clamping force and possible welding deformation.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a positioning fixture for producing high-speed rail seat armrests, comprising a base plate, a first sliding groove on the top of the base plate, a positioning mechanism on the top of the base plate, an adjustment mechanism inside the base plate, a moving plate on the top of the adjustment mechanism, a rotating shaft rotatably connected inside the moving plate, an installation hole inside the moving plate, a spring inside the installation hole, a rope inside the rotating shaft, one end of the rope being fixedly connected to the spring, a groove on the surface of the rotating shaft, and a clamping block fixedly connected to the top of the rotating shaft.

[0006] Preferably, one end of the rope is fixedly connected to a limit block, and a protective pad is fixedly connected to the surface of the clamping block.

[0007] Preferably, the positioning mechanism includes a pad, a positioning bolt is sleeved inside the pad, a nut is slidably connected inside the first groove, and the bottom of the positioning bolt is threadedly connected to the nut.

[0008] Preferably, the adjusting mechanism includes a slider, a second groove is provided on the top of the base plate, the inside of the second groove is slidably connected to the slider, the top of the slider is fixedly connected to the moving plate, a fixing block is slidably connected inside the adjusting mechanism, a screw is rotatably connected inside the fixing block, a fixing bolt is sleeved on the top of the base plate, the inside of the slider is threadedly connected to the screw, the bottom of the fixing bolt is threadedly connected to the fixing block, and a handwheel is fixedly connected to one end of the screw.

[0009] Preferably, the outer side of the base plate is provided with a mounting groove, and a mounting bolt is fitted inside the mounting groove.

[0010] This utility model has the following beneficial effects:

[0011] This device uses a handwheel-driven screw to move a slider and a moving plate in tandem, enabling the clamping block to adaptively grip the high-speed rail seat armrest. Through the linkage design of the rotating shaft and rope, combined with the elastic adjustment of the spring, the clamping block can automatically adjust the fit according to the inner angle of the armrest, ensuring uniform force during clamping and enhancing the structural stability during welding. The device supports repeated positioning after the high-speed rail seat armrest is flipped, and welding can be completed without changing the fixture, greatly improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 This is an exploded view of the structure of this utility model;

[0014] Figure 3 This is an exploded cross-sectional view of a portion of the structure of this utility model.

[0015] Reference numerals: 1. Base plate; 2. First slide groove; 3. Positioning mechanism; 301. Pad; 302. Positioning bolt; 303. Nut; 4. Moving plate; 5. Rotating shaft; 6. Mounting hole; 7. Spring; 8. Rope; 9. Groove; 10. Limiting block; 11. Clamping block; 12. Protective pad; 13. Adjusting mechanism; 1301. Slider; 1302. Second slide groove; 1303. Fixing block; 1304. Screw; 1305. Fixing bolt; 1306. Handwheel; 14. Mounting groove; 15. Mounting bolt. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Example 1:

[0018] refer to Figure 1-3A positioning fixture for producing high-speed rail seat armrests includes a base plate 1, a first sliding groove 2 on the top of the base plate 1, a positioning mechanism 3 on the top of the base plate 1, an adjustment mechanism 13 inside the base plate 1, a moving plate 4 on the top of the adjustment mechanism 13, a rotating shaft 5 rotatably connected inside the moving plate 4, an installation hole 6 inside the moving plate 4, a spring 7 inside the installation hole 6, a rope 8 inside the rotating shaft 5, one end of the rope 8 being fixedly connected to the spring 7, a groove 9 on the surface of the rotating shaft 5, and a clamping block 11 fixedly connected to the top of the rotating shaft 5.

[0019] Specifically, one end of the spring 7 is fixedly connected to the inner wall of the mounting hole 6 inside the moving plate 4, the groove 9 is an annular groove, the rope 8 is a steel wire rope, the moving plate 4 and the pad 301 of the adjustment mechanism 13 are at the same height, which can provide horizontal support for the high-speed rail seat armrest, and the top of the positioning bolt 302 and the clamping block 11 is lower than the plane of the top of the high-speed rail seat armrest, so as not to interfere with the welding operation.

[0020] The device drives the screw 1304 via the handwheel 1306, which in turn drives the slider 1301 and the moving plate 4 to move in tandem. This enables the clamping block 11 to adaptively clamp the high-speed rail seat armrest. The clamping block 11, through the linkage design of the rotating shaft 5 and the rope 8, combined with the elastic adjustment of the spring 7, can automatically adjust the fit according to the inner angle of the armrest, ensuring uniform force during clamping and enhancing the structural stability during welding. The device supports repeated positioning after the high-speed rail seat armrest is flipped, and welding can be completed without changing the fixture, greatly improving production efficiency.

[0021] refer to Figure 3 One end of the rope 8 is fixedly connected to a limiting block 10. By setting the limiting block 10, the function is to limit one end of the rope 8 and prevent the rope 8 from coming out of the inside of the rotating shaft 5. A protective pad 12 is fixedly connected to the surface of the clamping block 11. The protective pad 12 can protect the product. At the same time, anti-slip texture is opened on one side of the protective pad 12, which also plays an anti-slip role.

[0022] refer to Figure 2 The positioning mechanism 3 includes a pad 301, with a nut 303 fitted inside the pad 301. A positioning bolt 302 is slidably connected inside the first slide groove 2. The bottom of the positioning bolt 302 is threadedly connected to the nut 303. The pad 301 can support the high-speed rail seat armrest, positioning the outer side of the positioning bolt 302 against the inner side of the armrest. When the positioning bolt 302 is loosened, it pulls the positioning bolt 302, causing the nut 303 to slide inside the first slide groove 2. When the positioning bolt 302 is tightened, it causes the nut 303 to move upward on the surface of the positioning bolt 302, increasing the friction between the nut 303 and the first slide groove 2. It can also limit and fix the positioning bolt 302 and the pad 301, thereby effectively facilitating lateral adjustment of the positioning position.

[0023] refer to Figure 2 The adjusting mechanism 13 includes a slider 1301. A second groove 1302 is provided on the top of the base plate 1. The inside of the second groove 1302 is slidably connected to the slider 1301. The top of the slider 1301 is fixedly connected to the moving plate 4. A fixing block 1303 is slidably connected inside the adjusting mechanism 13. A screw 1304 is rotatably connected inside the fixing block 1303. The inside of the slider 1301 is threadedly connected to the screw 1304. A fixing bolt 1305 is fitted on the top of the base plate 1. The bottom of the fixing bolt 1305 is connected to the fixing plate 4. The screw 1304 is fixedly connected to a handwheel 1306 at one end of the screw 1303. The first bearing is fixedly sleeved inside the fixed block 1303. The inside of the first bearing is sleeved with the surface of one end of the screw 1304, so that the screw 1304 and the fixed block 1303 can be rotatedly connected. The second bearing is fixedly connected to the inner wall of the second slide groove 1302. The other end of the screw 1304 is sleeved with the second bearing, so that the other end of the screw 1304 can be supported without affecting the rotation of the screw 1304.

[0024] refer to Figure 2 The base plate 1 has an installation groove 14 on its outer side, and an installation bolt 15 is fitted inside the installation groove 14. The installation bolt 15 facilitates the installation of the device.

[0025] Brief description of usage: The user can install the device on the welding station of the welding robot using mounting bolts 15. Then, place the spot-welded high-speed rail seat armrest on top of the pad 301 and the moving plate 4. Next, turn the handwheel 1306 clockwise to rotate the screw 1304, causing the screw 1304 to slide the slider 1301 inside the second groove 1302. Simultaneously, the slider 1301 moves the moving plate 4 at the bottom of the high-speed rail seat armrest, causing the moving plate 4 to move the clamping block 11 to limit the high-speed rail seat armrest from the inside out. When the clamping block 11 contacts the high-speed rail seat armrest through the protective pad 12, it causes the clamping block 11 to rotate the rotating shaft 5 inside the moving plate 4. Simultaneously, the rotating shaft 5 winds the rope 8, causing... Rope 8 is wound into the groove 9, and at the same time, rope 8 drives spring 7 to stretch, so that clamping block 11 rotates and fits according to the angle of the inner side of the high-speed rail seat armrest. This can effectively facilitate the positioning and clamping of the high-speed rail seat armrest, and also allow the welding robot to fully weld and seal the inner and outer spot welding positions on the top of the high-speed rail seat armrest. After the inner and outer welding of the top of the high-speed rail seat armrest is completed, turning handwheel 1306 counterclockwise will release the limit on the high-speed rail seat armrest. At the same time, spring 7 resets, so that spring 7 drives clamping block 11 to reset and rotate through rope 8 and rotating shaft 5. The user can flip the high-speed rail seat armrest and use this device to reposition and clamp it, and it is also convenient for the welding robot to fully weld and seal the inner and outer spot welding positions on the bottom of the high-speed rail seat armrest.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A positioning fixture for producing high-speed rail seat armrests, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a first sliding groove (2), the top of the base plate (1) is provided with a positioning mechanism (3), the inside of the base plate (1) is provided with an adjustment mechanism (13), the top of the adjustment mechanism (13) is provided with a moving plate (4), the inside of the moving plate (4) is rotatably connected with a rotating shaft (5), the inside of the moving plate (4) is provided with an installation hole (6), the inside of the installation hole (6) is provided with a spring (7), the inside of the rotating shaft (5) is provided with a rope (8), one end of the rope (8) is fixedly connected to the spring (7), the surface of the rotating shaft (5) is provided with a groove (9), and the top of the rotating shaft (5) is fixedly connected with a clamping block (11).

2. The positioning fixture for producing high-speed rail seat armrests according to claim 1, characterized in that: One end of the rope (8) is fixedly connected to a limiting block (10), and a pad (12) is fixedly connected to the surface of the clamp (11).

3. A positioning fixture for producing high-speed rail seat armrests according to claim 1, characterized in that: The positioning mechanism (3) includes a pad (301), a positioning bolt (302) is sleeved inside the pad (301), a nut (303) is slidably connected inside the first groove (2), and the bottom of the positioning bolt (302) is threadedly connected to the nut (303).

4. A positioning fixture for producing high-speed rail seat armrests according to claim 1, characterized in that: The adjustment mechanism (13) includes a slider (1301), a second groove (1302) is provided on the top of the base plate (1), the inside of the second groove (1302) is slidably connected to the slider (1301), the top of the slider (1301) is fixedly connected to the moving plate (4), a fixing block (1303) is slidably connected inside the adjustment mechanism (13), a screw (1304) is rotatably connected inside the fixing block (1303), the inside of the slider (1301) is threadedly connected to the screw (1304), a fixing bolt (1305) is sleeved on the top of the base plate (1), the bottom of the fixing bolt (1305) is threadedly connected to the fixing block (1303), and a handwheel (1306) is fixedly connected to one end of the screw (1304).

5. A positioning fixture for producing high-speed rail seat armrests according to claim 1, characterized in that: The base plate (1) has an installation groove (14) on its outer side, and an installation bolt (15) is fitted inside the installation groove (14).

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