A telescopic positioning device

Abstract

This utility model discloses a telescopic positioning device, including a workpiece support base, a workpiece positioning rod, and a push-pull rod. The upper end of the workpiece support base has a vertically arranged through-hole for the positioning rod, in which the workpiece positioning rod is installed and can extend upwards or retract downwards. The lower end of the workpiece support base has a horizontally arranged push-pull cavity, which is connected to the through-hole for the positioning rod. The push-pull rod is installed inside the push-pull cavity and can move back and forth along the cavity. The push-pull rod has a continuously transitioning first platform surface, a ramp surface, and a second platform surface, with the second platform surface being higher than the first platform surface. When the push-pull rod moves back and forth, the first platform surface, the ramp surface, and the second platform surface can sequentially contact the lower end of the workpiece positioning rod. The workpiece positioning rod of this utility model can extend upwards or retract downwards into the through-hole for the positioning rod, allowing the positioning rod to extend or retract above the workpiece support base, facilitating workpiece positioning and removal.

Description

Technical Field

[0001] This utility model relates to the field of workpiece fixing fixture technology, and in particular to a telescopic positioning device. Background Technology

[0002] Currently, in the process of inspecting the connection hole positions, paint finish, dimensions, and curvature of automotive sheet metal parts and other workpieces, positioning devices are required for positioning these parts. Automotive sheet metal parts typically have multiple connection holes. In existing technology, positioning devices for automotive sheet metal parts usually include a base and positioning rods connected to the base. When positioning the automotive sheet metal part is required, the connection holes of the part are aligned with the positioning rods of the positioning device, and the positioning rods are inserted upwards into the connection holes. Through the positioning action of multiple positioning rods, multiple connection holes of the automotive sheet metal part can be positioned simultaneously, thereby achieving the positioning of the automotive sheet metal part. However, the main problem with this type of positioning device in existing technology is that the positioning rods and the base are fixed to each other, and the positioning rods cannot extend or retract above the base, making it inconvenient to position and move the workpiece. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a telescopic positioning device that addresses the shortcomings of the prior art. The workpiece positioning rod of this device can extend upward or retract downward from the positioning rod through hole of the workpiece support seat, so that the positioning rod can extend or retract on the workpiece support seat, making it convenient to position and move the workpiece.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a telescopic positioning device, including a workpiece support base, a workpiece positioning rod, and a push-pull rod; the upper end of the workpiece support base is provided with a vertically oriented positioning rod through hole, the workpiece positioning rod is installed in the positioning rod through hole and can extend upward or retract downward into the positioning rod through hole; the lower end of the workpiece support base is provided with a horizontally oriented push-pull cavity, the push-pull cavity is connected to the positioning rod through hole, the push-pull rod is installed inside the push-pull cavity and can move back and forth along the push-pull cavity; the push-pull rod is provided with a continuously transitioning first platform surface, a ramp surface, and a second platform surface, the height of the second platform surface being higher than the height of the first platform surface, and when the push-pull rod moves back and forth along the push-pull cavity, the first platform surface, the ramp surface, and the second platform surface can sequentially contact the lower end of the workpiece positioning rod.

[0005] In the above technical solution, a limiting hole is provided on one side of the lower end of the workpiece support base. The limiting hole is connected to the push-pull cavity, and a limiting pin is installed in the limiting hole. A limiting groove is provided on the side of the push-pull rod. The limiting groove is located below the first platform surface, the slope surface, and the second platform surface. The inner end of the limiting pin extends into the limiting groove. When the push-pull rod moves back and forth along the push-pull cavity, the inner end of the limiting pin can move back and forth along the limiting groove, and the pushing-pull end position of the push-pull rod is limited by the two ends of the limiting groove.

[0006] In the above technical solution, the telescopic positioning device further includes a spring, the lower end of the positioning rod through hole is provided with a spring receiving cavity, the spring is installed in the spring receiving cavity, the lower end of the workpiece positioning rod is provided with a positioning rod cap, the workpiece positioning rod passes through the spring from bottom to top, and the upper side of the positioning rod cap abuts against the lower end of the spring.

[0007] In the above technical solution, the push-pull cavity is a cuboid cavity, the width of the push-pull cavity is greater than or equal to the inner diameter of the spring receiving cavity, and the bottom of the workpiece support seat is also provided with a bottom hole that connects to the cuboid cavity. The bottom hole is located directly below the spring receiving cavity, and the inner diameter of the bottom hole is greater than or equal to the inner diameter of the spring receiving cavity.

[0008] In the above technical solution, the push-pull rod is a push-pull rod with a square longitudinal section. The first platform surface, the ramp surface, and the second platform surface are located at one end of the push-pull rod, and the other end of the push-pull rod is connected to a handle.

[0009] In the above technical solution, the workpiece support includes a base and a column integrally connected to the base. The positioning rod through hole is located inside the column, the push-pull cavity is located inside the base, and the base is also provided with several vertical through mounting holes.

[0010] The beneficial effects of this utility model are as follows: The workpiece positioning rod is installed in the positioning rod through hole and can extend upwards or retract downwards into the positioning rod through hole. The push-pull rod is installed inside the push-pull cavity and can move back and forth along the cavity. The push-pull rod has a continuously transitioning first platform surface, a ramp surface, and a second platform surface. The height of the second platform surface is higher than that of the first platform surface. When the push-pull rod moves back and forth along the cavity, the first platform surface, the ramp surface, and the second platform surface can sequentially contact the lower end of the workpiece positioning rod. Therefore, during the back-and-forth movement of the push-pull rod along the cavity, when the first platform surface contacts the lower end of the workpiece positioning rod, the workpiece positioning rod retracts into the positioning rod through hole. When the ramp surface contacts the lower end of the workpiece positioning rod, the workpiece positioning rod can be pushed upwards by the ramp surface or can automatically descend. The descent can be due to its own gravity or a spring. When the second platform surface contacts the lower end of the workpiece positioning rod, the upper end of the workpiece positioning rod extends out of the positioning rod through hole. As can be seen, this utility model uses a push-pull rod to move back and forth, allowing the positioning rod to extend or retract above the workpiece support, making workpiece positioning and removal convenient. Attached Figure Description

[0011] Figure 1 This is a first-person view of the overall structure of this utility model.

[0012] Figure 2 This is a second-view structural diagram of the present invention.

[0013] Figure 3 This is one of the longitudinal sectional structural views of this utility model.

[0014] Figure 4 This is the second longitudinal sectional view of the present invention.

[0015] Figure 5 This is a diagram of the dispersed structure of this utility model. Detailed Implementation

[0016] The structural and working principles of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] like Figures 1-5As shown, this utility model is a telescopic positioning device for positioning workpieces with holes (not shown). The telescopic positioning device includes a workpiece support base 1, a workpiece positioning rod 2, and a push-pull rod 3. The upper end of the workpiece support base 1 is vertically provided with a positioning rod through hole 4. The workpiece positioning rod 2 is installed in the positioning rod through hole 4 and can extend upward or retract downward into the positioning rod through hole 4. The lower end of the workpiece support base 1 is horizontally provided with a push-pull cavity 5, which is connected to the positioning rod through hole 4. The push-pull rod 3 is installed inside the push-pull cavity 5 and can move back and forth along the push-pull cavity 5. The push-pull rod 3 is provided with a continuously transitioning first platform surface 31, a ramp surface 32, and a second platform surface 33. The height of the second platform surface 33 is higher than the height of the first platform surface 31. When the push-pull rod 3 moves back and forth along the push-pull cavity 5, the first platform surface 31, the ramp surface 32, and the second platform surface 33 can sequentially contact the lower end of the workpiece positioning rod 2.

[0018] In the process of positioning the workpiece, this utility model first brings the first platform surface 31 of the push-pull rod 3 into contact with the lower end of the workpiece positioning rod 2. At this time, the workpiece positioning rod 2 retracts into the positioning rod through hole 4. The operator places the workpiece (not shown) on the upper end of the workpiece support 1 and aligns the workpiece's hole with the positioning rod through hole 4; then, see... Figure 3 Push the push-pull rod 3 to the left. When the ramp surface 32 contacts the lower end of the workpiece positioning rod 2, the workpiece positioning rod 2 can be pushed upward by the ramp surface 32; then, see Figure 3 Continue pushing the push-pull rod 3 to the left. When the second platform surface 33 contacts the lower end of the workpiece positioning rod 2, the upper end of the workpiece positioning rod 2 extends out of the positioning rod through hole 4. At this time, the upper end of the workpiece positioning rod 2 is inserted into the hole of the workpiece, positioning the workpiece. In the process of releasing the workpiece positioning, the push-pull rod 3 is pulled to the right. The lower end of the workpiece positioning rod 2 contacts the second platform surface 33, the ramp surface 32, and the first platform surface 31 in sequence, causing the workpiece positioning rod 2 to retract into the positioning rod through hole 4 and reset, thus releasing the workpiece positioning and allowing the workpiece to be moved out. Therefore, this invention, through the back-and-forth pushing and pulling of the push-pull rod, allows the positioning rod to extend or retract above the workpiece support, facilitating workpiece positioning and removal.

[0019] like Figures 1-5As shown, a limiting hole 6 is provided on one side of the lower end of the workpiece support 1. The limiting hole 6 is connected to the push-pull cavity 5, and a limiting pin 7 is installed in the limiting hole 6. A limiting groove 34 is provided on the side of the push-pull rod 3. The limiting groove 34 is located below the first platform surface 31, the slope surface 32, and the second platform surface 33. The inner end of the limiting pin 7 extends into the limiting groove 34. When the push-pull rod 3 moves back and forth along the push-pull cavity 5, the inner end of the limiting pin 7 can move back and forth along the limiting groove 34, and the pushing-pull end position of the push-pull rod 3 is limited by the two ends of the limiting groove 34. By setting the limiting groove 34 and the limiting pin 7, the pushing-pull end position of the push-pull rod 3 can be limited, preventing the push-pull rod 3 from coming loose from the push-pull cavity 5, making pushing and pulling more convenient.

[0020] like Figures 3-5 As shown, the telescopic positioning device also includes a spring 8. The lower end of the positioning rod through hole 4 is provided with a spring receiving cavity 9, and the spring 8 is installed within the spring receiving cavity 9. The lower end of the workpiece positioning rod 2 is provided with a positioning rod cap 21. The workpiece positioning rod 2 passes through the spring 8 from bottom to top, and the upper side of the positioning rod cap 21 abuts against the lower end of the spring 8. By setting the spring 8, a downward elastic pressure can be applied to the workpiece positioning rod 2, making the retraction of the workpiece positioning rod 2 more stable and reliable.

[0021] like Figures 1-5 As shown, the push-pull cavity 5 is a rectangular cavity, and the width of the push-pull cavity 5 is greater than or equal to the inner diameter of the spring receiving cavity 9. The bottom of the workpiece support 1 is also provided with a bottom hole 10 that connects to the rectangular cavity. The bottom hole 10 is located directly below the spring receiving cavity 9, and the inner diameter of the bottom hole 10 is greater than or equal to the inner diameter of the spring receiving cavity 9. By setting the bottom hole 10, the spring 8 and the workpiece positioning rod 2 can be easily installed. During assembly, first, the spring 8 is placed on the workpiece positioning rod 2; then, the workpiece positioning rod 2 and the spring 8 are passed through the bottom hole 10 together and inserted into the positioning rod through hole 4; next, the left end of the push-pull rod 3 is inserted into the push-pull cavity 5; finally, the limiting pin 7 is passed through the limiting hole 6, and the inner end of the limiting pin 7 is inserted into the long groove 34.

[0022] like Figures 1-5 As shown, the push-pull rod 3 has a square longitudinal section. The first platform surface 31, the ramp surface 32, and the second platform surface 33 are located at one end of the push-pull rod 3. The other end of the push-pull rod 3 is connected to a handle 35, which is used for human hand gripping or robotic arm gripping.

[0023] like Figures 1-5As shown, the workpiece support 1 includes a base 11 and a column 12 integrally connected to the base 11. The positioning rod through hole 4 is located inside the column 12, and the push-pull cavity 5 is located inside the base 11. The base 11 is also provided with several vertical through mounting holes 13. Screws are inserted into the mounting holes 13 to install the base 11 onto external equipment.

[0024] The above description is merely a preferred embodiment of this utility model. Any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical solution of this utility model shall fall within the scope of the technical solution of this utility model.

Claims

1. A telescopic positioning device, characterized in that: The device includes a workpiece support, a workpiece positioning rod, and a push-pull rod. The upper end of the workpiece support has a vertically oriented through-hole for the positioning rod, into which the workpiece positioning rod is installed and can extend upwards or retract downwards. The lower end of the workpiece support has a horizontally oriented push-pull cavity, which is connected to the through-hole for the positioning rod. The push-pull rod is installed within the push-pull cavity and can move back and forth along it. The push-pull rod has a continuously transitioning first platform surface, a ramp surface, and a second platform surface. The second platform surface is higher than the first platform surface. When the push-pull rod moves back and forth along the push-pull cavity, the first platform surface, the ramp surface, and the second platform surface can sequentially contact the lower end of the workpiece positioning rod.

2. The telescopic positioning device according to claim 1, characterized in that: The lower end of the workpiece support is provided with a limiting hole, which is connected to the push-pull cavity. A limiting pin is installed in the limiting hole. The side of the push-pull rod is provided with a limiting groove, which is located below the first platform surface, the slope surface, and the second platform surface. The inner end of the limiting pin extends into the limiting groove. When the push-pull rod moves back and forth along the push-pull cavity, the inner end of the limiting pin can move back and forth along the limiting groove, and the pushing-pull end position of the push-pull rod is limited by the two ends of the limiting groove.

3. The telescopic positioning device according to claim 2, characterized in that: It also includes a spring, the lower end of the positioning rod through hole is provided with a spring receiving cavity, the spring is installed in the spring receiving cavity, the lower end of the workpiece positioning rod is provided with a positioning rod cap, the workpiece positioning rod passes through the spring from bottom to top, and the upper side of the positioning rod cap abuts against the lower end of the spring.

4. The telescopic positioning device according to claim 3, characterized in that: The push-pull cavity is a cuboid cavity, and the width of the push-pull cavity is greater than or equal to the inner diameter of the spring receiving cavity. The bottom of the workpiece support is also provided with a bottom hole that connects to the cuboid cavity. The bottom hole is located directly below the spring receiving cavity, and the inner diameter of the bottom hole is greater than or equal to the inner diameter of the spring receiving cavity.

5. The telescopic positioning device according to claim 4, characterized in that: The push-pull rod is a push-pull rod with a square longitudinal section. The first platform surface, the ramp surface, and the second platform surface are located at one end of the push-pull rod, and the other end of the push-pull rod is connected to a handle.

6. The telescopic positioning device according to any one of claims 1-5, characterized in that: The workpiece support includes a base and a column integrally connected to the base. The positioning rod through hole is located inside the column, the push-pull cavity is located inside the base, and the base is also provided with several vertical through mounting holes.

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