Exhaust pipe cutting positioning mechanism

Abstract

The utility model relates to the technical field of automobile exhaust pipe processing, and specifically discloses a positioning mechanism for exhaust pipe cutting, which comprises a bottom plate and a supporting block, the supporting block is fixed to the top of the bottom plate, the top of the supporting block is provided with a containing groove matched with the shape of the exhaust pipe, a lifting device is installed on the bottom plate, an upper lifting plate and a lower lifting plate are arranged on the lifting end of the lifting device in the up-down direction, a plurality of sliding rods are longitudinally arranged in the lower lifting plate, the sliding rods are distributed along the orthographic projection contour of the containing groove, a pressing block is fixed to the bottom of the sliding rod, a compression spring is sleeved on the sliding rod, the compression spring abuts between the pressing block and the lower lifting plate, a screw rod is vertically fixed to the top of the sliding rod, the screw rod penetrates the upper lifting plate, and a positioning nut is threadedly connected to the screw rod. The positioning mechanism is convenient to install and debug.

Description

Technical Field

[0001] This utility model relates to the field of automotive exhaust pipe processing technology, and in particular to a positioning mechanism for exhaust pipe cutting. Background Technology

[0002] The exhaust pipe of a car has multiple bending points. When laser cutting the pipe opening, a special fixture is required to fix the exhaust pipe in place. The existing fixture includes a base plate, a support block, and several cylinders. The support block is fixed to the top of the base plate, and the top of the support block has a receiving groove that matches the shape of the exhaust pipe. Multiple cylinders are installed at intervals along the extension direction of the support block on the base plate. The exhaust pipe is fitted into the receiving groove on the top of the support block. After the piston rod of the cylinder pushes out, it can press the exhaust pipe firmly onto the support block.

[0003] Although the fixture with the above structure can perfectly fit the exhaust pipe of a specific shape, the placement angle and ejection stroke of each cylinder need to be specifically designed during the design and manufacturing process. The debugging and installation are difficult and need to be improved. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a positioning mechanism for cutting exhaust pipes.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A positioning mechanism for cutting exhaust pipes includes a base plate and a support block. The support block is fixed to the top of the base plate and has a receiving groove adapted to the shape of the exhaust pipe at its top. A lifting device is installed on the base plate. An upper lifting plate and a lower lifting plate are spaced apart along the vertical direction on the lifting end of the lifting device. Several sliding rods are longitudinally inserted into the lower lifting plate and are located above the receiving groove. The sliding rods are distributed along the orthographic projection outline of the receiving groove. A clamping block larger than itself is fixed to the bottom of each sliding rod. A compression spring is sleeved on the sliding rod and abuts against the clamping block and the lower lifting plate. A screw is vertically fixed to the top of the sliding rod and passes through the upper lifting plate. A positioning nut is threaded onto the screw and is located below the upper lifting plate.

[0007] Furthermore, the sliding rod is prism-shaped.

[0008] Furthermore, the screw is smaller than the sliding rod, and an anti-loosening nut is threaded onto the screw, with the anti-loosening nut positioned above the upper lifting plate.

[0009] The beneficial effects of this utility model are as follows: the positioning nuts on each screw can be adjusted separately so that when the pressure block abuts against the top of the exhaust pipe, the corresponding positioning nut abuts against the bottom of the lower lifting plate, which can also fix the exhaust pipe firmly. Compared with the method of fixing with multiple cylinders, this device only uses one lifting mechanism to fix the exhaust pipe, without the need to adjust the placement angle and ejection stroke of multiple cylinders separately, which greatly reduces the difficulty of debugging and installation. Attached Figure Description

[0010] Figure 1 This is an isometric view of an embodiment of the present utility model;

[0011] Figure 2 This is a schematic diagram of a fixed exhaust pipe.

[0012] Explanation of the attached drawing numbers: 1. Base plate, 2. Support block, 21. Receiving groove, 3. Cylinder, 4. Connecting frame, 5. Upper lifting plate, 6. Lower lifting plate, 7. Sliding rod, 71. Pressing block, 72. Screw, 8. Positioning nut, 9. Anti-loosening nut, 10. Compression spring, 110. Exhaust pipe. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0014] Example

[0015] like Figures 1-2As shown, the positioning mechanism for exhaust pipe cutting includes a base plate 1 and a support block 2. The support block 2 is fixed to the top of the base plate 1. The top of the support block 2 has a receiving groove 21 that matches the shape of the exhaust pipe 110. A lifting device is installed on the base plate 1. The lifting device includes a cylinder 3 and a connecting frame 4. The cylinder 3 is vertically fixed to the top of the base plate 1. The cylinder body of the cylinder 3 is connected to the air source, and the cylinder 3 is controlled by an industrial control computer. The connecting frame 4 is fixed to the piston rod of the cylinder 3. An upper lifting plate 5 and a lower lifting plate 6 are spaced apart along the vertical direction on the connecting frame 4. The inner edge of the lower lifting plate 6... Three sliding rods 7 are longitudinally inserted and positioned above the receiving groove 21. The three sliding rods 7 are spaced apart along the orthographic projection outline of the receiving groove 21. A clamping block 71 larger than itself is fixed to the bottom of each sliding rod 7. The bottom of the clamping block 71 is semi-circular. A compression spring 10 is sleeved on the sliding rod 7. The compression spring 10 abuts against the clamping block 71 and the lower lifting plate 6. A screw 72 is vertically fixed to the top of the sliding rod 7. The screw 72 passes through the upper lifting plate 5. A positioning nut 8 is threaded onto the screw 72 and is located below the upper lifting plate 5.

[0016] In actual use, when fixing the exhaust pipe 110 for the first time, first install the exhaust pipe 110 into the receiving groove 21, then operate the cylinder 3 to move the connecting bracket 4 down a certain stroke until each clamping block 71 abuts against the top of the exhaust pipe 110. Record the stroke of the cylinder 3 at this point. Under the action of the compression spring 10, each clamping block 71 is pressed against the top of the exhaust pipe 110. Then adjust each positioning nut 8 so that the positioning nut 8 abuts against the bottom of the lower lifting plate 6. Under the action of the positioning nut 8, the sliding rod 7 will no longer move up, and the clamping block 71 can firmly press the exhaust pipe 110. In subsequent clamping processes, only the cylinder 3 needs to be moved down the first stroke to press the exhaust pipe 110. Since only one cylinder 3 needs to be adjusted, multiple adjustments are not required, effectively reducing the difficulty of adjustment.

[0017] In this embodiment, the sliding rod 7 is prism-shaped and will not rotate, thus preventing the positioning nut 8 from loosening.

[0018] In this embodiment, the screw 72 is smaller than the sliding rod 7. The screw 72 is threaded with an anti-loosening nut 9. The anti-loosening nut 9 is located above the upper lifting plate 5. The design is reasonable and facilitates the assembly of the sliding rod 7 and the screw 72 into the lower lifting plate 6 and the upper lifting plate 5, respectively. In addition, the anti-loosening nut 9 can also prevent the screw 72 from detaching from the upper lifting plate 5, thereby improving the stability of the device.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning mechanism for cutting exhaust pipes, comprising a base plate (1) and a support block (2), wherein the support block (2) is fixed to the top of the base plate (1), and the top of the support block (2) has a receiving groove (21) adapted to the shape of an exhaust pipe (110), characterized in that, A lifting device is installed on the base plate (1). An upper lifting plate (5) and a lower lifting plate (6) are spaced apart along the vertical direction on the lifting end of the lifting device. Several sliding rods (7) are longitudinally inserted in the lower lifting plate (6). The sliding rods (7) are located above the receiving groove (21). The several sliding rods (7) are distributed along the orthographic projection outline of the receiving groove (21). A pressing block (71) larger than itself is fixed to the bottom of the sliding rod (7). A compression spring (10) is sleeved on the sliding rod (7). The compression spring abuts between the pressing block (71) and the lower lifting plate (6). A screw (72) is vertically fixed to the top of the sliding rod (7). The screw (72) passes through the upper lifting plate (5). A positioning nut (8) is threaded on the screw (72). The positioning nut (8) is located below the upper lifting plate (5).

2. The positioning mechanism for cutting exhaust pipes according to claim 1, characterized in that, The sliding rod (7) is prism-shaped.

3. The positioning mechanism for cutting exhaust pipes according to claim 2, characterized in that, The screw (72) is smaller than the sliding rod (7), and an anti-loosening nut (9) is threaded onto the screw (72). The anti-loosening nut (9) is located above the upper lifting plate (5).

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