Center rapid positioning structure

Abstract

The utility model relates to a center rapid positioning structure. A first side plate positioning reference assembly comprises a plurality of first jacking heads (2-1), side edge positioning blocks (2-5) and front and back positioning blocks (2-18), wherein the first jacking heads (2-1) correspond to first side plates (1-1) in position; the second side plate positioning reference assembly comprises a plurality of second jacking heads (2-19), side edge positioning blocks (2-5) and front-back positioning blocks (2-18), wherein the second jacking heads (2-19) correspond to the second side plates (1-2) in position. The bottom plate positioning reference assembly comprises a plurality of bottom plate positioning blocks (2-3) arranged corresponding to the position of the bottom plate (1-3), a third jacking head (2-20) and a tabletop platform (2-2); the first jacking head (2-1), the second jacking head (2-19) and the third jacking head (2-20) are connected to the table top platform (2-2) through a threaded rod controlled by a handle and a support. And the side edge positioning block (2-5) is controlled by the side edge positioning block unfolding control sliding block (2-7) and a spring, so that the operation is simple, a workpiece can be taken down more easily after splicing, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to a point welding tool, in particular to a central rapid positioning structure. Background Art

[0002] The idler wheel installed on the bottom plate of the excavator is used to control the tension of the track. Figure 5 As shown, in the idler production process, the side panel 1-1 and the side panel 1-2 on the bottom plate 1-3 need to maintain a fixed position to facilitate automatic welding by the robot arm. However, in the currently used tooling, the tightening device between the side panel 1-1 and the side panel 1-2 is fixed. In actual use, there are often deviations between the side panel 1-1 and the side panel 1-2, which will cause the robot arm welding to fail. At the same time, due to the internal structure limitations of the side panel 1-1 and the side panel 1-2, the fixed tooling will affect its removal after the idler welding is completed, which is very inconvenient to use. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a center quick positioning structure, which can be easily operated and can make it easier to remove the workpiece after assembly, thereby effectively improving production efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a center rapid positioning structure, including a positioning and fixing tool and a side panel one positioning reference assembly, a side panel two positioning reference assembly and a bottom plate positioning reference assembly fixedly arranged on the positioning and fixing tool, wherein the side panel one positioning reference assembly includes a plurality of ejector heads one, side positioning blocks and front and rear positioning blocks arranged corresponding to the position of the side panel one; the side panel two positioning reference assembly includes a plurality of ejector heads two, side positioning blocks and front and rear positioning blocks arranged corresponding to the position of the side panel two; the bottom plate positioning reference assembly includes a plurality of bottom plate positioning blocks, an ejector head three and a desktop platform arranged corresponding to the position of the bottom plate; the ejector heads one, two and three are connected to the desktop platform through threaded rods and brackets controlled by handles; the side positioning blocks are controlled by side positioning block expansion control sliders and springs, and the front and rear positioning blocks are controlled by front and rear positioning block expansion control sliders and springs.

[0005] In addition, the central rapid positioning structure proposed in the above embodiment of the utility model may also have the following additional technical features:

[0006] As a further improvement scheme of the utility model, a side drive shaft lifting control gear box is installed at the lower part of the desktop platform through a bracket, and the side drive shaft lifting control rotating shaft is transmission-connected to the side drive shaft lifting control gear box. The through hole on the upper surface of the side drive shaft lifting control gear box is connected to the side drive shaft limited by the drive shaft limit block on the inner side of the central positioning tower through a transmission rod. The side drive shaft has side positioning blocks and expansion control sliders arranged at equal intervals. The two sides of the inverted trapezoidal side positioning blocks are respectively slidably connected to one end of the side positioning blocks, and the end of the side drive shaft lifting control rotating shaft is equipped with a handle.

[0007] As a further improvement scheme of the present utility model, the front and rear positioning block control handle is installed on the side of the desktop platform through a bracket, and is connected to one end of the front and rear positioning block control shaft through a transmission connecting rod. The other end of the front and rear positioning block control shaft is transmission-connected to the lifting gear box bottom plate. The lifting rod of the lifting gear box bottom plate controls the lifting of the front and rear positioning block control connecting plate. The front and rear positioning block control connecting plate is fixedly connected to the front and rear transmission shafts movably installed in the central positioning tower through the front and rear transmission shaft limit blocks near the edge. The front and rear positioning block expansion control sliders are arranged at equal intervals on the front and rear transmission shafts, and the inverted trapezoidal front and rear positioning block expansion control sliders are slidingly connected to the front and rear positioning blocks on the sides.

[0008] As a further improvement of the present invention, the side transmission shaft lifting control gear box and the lifting gear box bottom plate are both equipped with liftable support rods controlled by gears and toothed belts.

[0009] As a further improvement of the present invention, the ends of the jacking head one, the jacking head two and the jacking head three are all equipped with hard rubber pads.

[0010] Through the above scheme, the utility model has at least the following advantages: compared with conventional tooling, the tooling inside the workpiece is converted into a movable structure through the retractable side positioning blocks and the front and rear positioning blocks. After the workpiece is assembled, the center positioning tower can be retracted, thereby making the operation simple and making it easier to remove the workpiece after assembly, which can effectively improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a partial perspective view of the central quick positioning structure;

[0012] Figure 2 It is a side partial perspective view of the central rapid positioning structure;

[0013] Figure 3 This is a front view structural diagram of the utility model when spot welding an idler wheel workpiece;

[0014] Figure 4 It is a schematic diagram of the top view of the structure of the idler wheel workpiece when the utility model is welded at the joint point;

[0015] Figure 5 It is a front view structural diagram of the idler wheel workpiece;

[0016] In the figure: 1. Idler workpiece, 1-1. Side plate 1, 1-2. Side plate 2, 1-3. Bottom plate, 2. Positioning fixture, 2-1. Ejector head 1, 2-2. Desktop platform, 2-3. Bottom plate positioning block, 2-4. Center positioning tower, 2-5. Side positioning block, 2-6. Drive shaft limit block, 2-7. Side positioning block unfolding control slide block, 2-8. Side drive shaft lifting control shaft, 2-9. Side drive shaft lifting control gear box, 2 -10, front and rear positioning block control handle, 2-11, transmission connecting rod, 2-12, front and rear positioning block control shaft, 2-13, lifting gear box bottom plate, 2-14, front and rear positioning block control connecting plate, 2-15, front and rear transmission shafts, 2-16, front and rear positioning block expansion control slider, 2-17, front and rear transmission shaft limit blocks, 2-18, front and rear positioning blocks, 2-19, ejector head two, 2-20, ejector head three, 2-21, side transmission shaft. DETAILED DESCRIPTION

[0017] The center quick positioning structure of the utility model is described below in conjunction with the accompanying drawings.

[0018] In the first embodiment of the present application, Figures 1 to 4 As shown, the center rapid positioning structure (hereinafter referred to as "this patent") includes a positioning fixture 2 and a side plate one positioning reference assembly, a side plate two positioning reference assembly and a bottom plate positioning reference assembly fixedly arranged on the positioning fixture 2. The side plate one positioning reference assembly includes a plurality of jacking heads 2-1, a side positioning block 2-5 and a front and rear positioning block 2-18 arranged at the position corresponding to the side plate one 1-1; the side plate two positioning reference assembly includes a plurality of jacking heads 2-19, a side positioning block 2-5 and a front and rear positioning block 2-18 arranged at the position corresponding to the side plate two 1-2 Block 2-5 and front and rear positioning blocks 2-18; the base plate positioning reference assembly includes multiple base plate positioning blocks 2-3, jacking head three 2-20 and desktop platform 2-2 arranged at the positions corresponding to the base plate 1-3; jacking head one 2-1, jacking head two 2-19 and jacking head three 2-20 are connected to the desktop platform 2-2 through threaded rods and brackets controlled by handles; the side positioning block 2-5 is controlled by the side positioning block expansion control slider 2-7 and springs, and the front and rear positioning blocks 2-18 are controlled by the front and rear positioning block expansion control slider 2-16 and springs.

[0019] The lower part of the desktop platform 2-2 is installed with a side transmission shaft lifting control gear box 2-9 through a bracket, and the side transmission shaft lifting control rotating shaft 2-8 is transmission-connected to the side transmission shaft lifting control gear box 2-9. The upper surface of the side transmission shaft lifting control gear box 2-9 has a through hole connected to the side transmission shaft 2-21 limited by the transmission shaft limit block 2-6 on the inner side of the central positioning tower 2-4 through a transmission rod. The side transmission shaft 2-21 is evenly spaced with side positioning block expansion control sliders 2-7. Both sides of the inverted trapezoidal side positioning block expansion control slider 2-7 are respectively slidably connected to one end of the side positioning block 2-5, and the end of the side transmission shaft lifting control rotating shaft 2-8 is equipped with a handle. The front and rear positioning block control handle 2-10 is installed on the side of the desktop platform 2-2 through a bracket, and is connected to one end of the front and rear positioning block control shaft 2-12 through a transmission connecting rod 2-11. The other end of the front and rear positioning block control shaft 2-12 is transmission-connected to the lifting gear box bottom plate 2-13. The lifting rod of the lifting gear box bottom plate 2-13 controls the lifting of the front and rear positioning block control connecting plate 2-14. The front and rear positioning block control connecting plate 2-14 is fixedly connected to the front and rear transmission shaft 2-15 movably installed in the central positioning tower 2-4 through the front and rear transmission shaft limit blocks 2-17 near the edge. The front and rear positioning block expansion control sliders 2-16 are arranged at equal intervals on the front and rear transmission shaft 2-15. The inverted trapezoidal front and rear positioning block expansion control sliders 2-16 are slidably connected to the front and rear positioning blocks 2-18 on the side. The side transmission shaft lifting control gear box 2-9 and the lifting gear box bottom plate 2-13 are both equipped with liftable support rods controlled by gears and toothed belts. The ends of the jacking head 1 2-1, the jacking head 2-19 and the jacking head 3 2-20 are all equipped with hard rubber pads.

[0020] When in use, install the central quick positioning structure and the equipment can be put into use.

[0021] When the utility model is in use, the specific operations are as follows:

[0022] When in use, the bottom plate 1-3 of the idler workpiece 1 is first positioned through the bottom plate positioning block 2-3, and the jacking head three 2-20 is controlled to press the bottom plate 1-3 tightly, and then the side plate one 1-1 and the side plate two 1-2 are hoisted to the corresponding positions, and the front and rear positioning block control handles 2-10 are controlled to drive the transmission connecting rod 2-11 to be linked, and the front and rear positioning block control shafts 2-12 are slightly rotated through the linked transmission connecting rod 2-11, and the front and rear positioning block control shafts 2-12 drive the lifting columns in the bottom plate 2-13 of the lifting gear box to retract, and the front and rear positioning block control connecting plates 2-14 that lose support descend under the action of gravity, and the front and rear positioning block control connecting plates 2-14 drive the front and rear transmission shafts 2-15 to descend, and the descending front and rear transmission shafts 2-15 make the front and rear positioning block expansion control sliders 2-16 move downward, and the inverted trapezoidal front and rear positioning block expansion control sliders 2-16 contact surfaces become The side drive shaft 2-21 is lowered, and the lowered side drive shaft 2-21 is moved downward by the side positioning block on it to expand the control slider 2-7, and the contact surface of the inverted trapezoidal side positioning block expansion control slider 2-7 changes, so that the side positioning block 2-5 is extended, and the front and rear drive shaft limit blocks 2-17 and the side positioning blocks 2-5 are positioned from the inside to the side plate 1-1 and the side plate 2-2 together, and finally the push head 1 2-1 and the push head 2-19 are controlled to support the side plate 1-1 and the side plate 2-2 from the outside, and the idler workpiece 1 can be started to be spot welded.

[0023] In summary, the center quick positioning structure of the embodiment of the utility model, through the retractable side positioning blocks 2-5 and the front and rear positioning blocks 2-18, turns the tooling inside the workpiece into a movable structure. After the workpiece is assembled, the center positioning tower 2-4 can be retracted, thereby making the operation simple and making it easier to remove the workpiece after assembly, which can effectively improve production efficiency.

[0024] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A center rapid positioning structure, comprising a positioning fixture (2) and a side plate first positioning reference assembly, a side plate second positioning reference assembly and a bottom plate positioning reference assembly fixedly arranged on the positioning fixture (2), characterized in that: The side panel one positioning reference assembly comprises a plurality of jacking heads one (2-1), side positioning blocks (2-5) and front and rear positioning blocks (2-18) arranged at positions corresponding to the side panel one (1-1); the side panel two positioning reference assembly comprises a plurality of jacking heads two (2-19), side positioning blocks (2-5) and front and rear positioning blocks (2-18) arranged at positions corresponding to the side panel two (1-2); the bottom plate positioning reference assembly comprises a plurality of bottom plate positioning blocks (2-3), jacking heads three (2-20) and a desktop platform (2-2) arranged at positions corresponding to the bottom plate (1-3); the jacking heads one (2-1), the jacking heads two (2-19) and the jacking heads three (2-20) are connected to the desktop platform (2-2) through threaded rods and brackets controlled by a handle; the side positioning blocks (2-5) are controlled by a side positioning block unfolding control slider (2-7) and a spring, and the front and rear positioning blocks (2-18) are controlled by a front and rear positioning block unfolding control slider (2-16) and a spring.

2. The center rapid positioning structure according to claim 1, characterized in that: The lower part of the desktop platform (2-2) is provided with a side transmission shaft lifting control gear box (2-9) through a bracket, the side transmission shaft lifting control rotating shaft (2-8) is transmission-connected to the side transmission shaft lifting control gear box (2-9), the upper surface of the side transmission shaft lifting control gear box (2-9) is provided with a through hole connected to the side transmission shaft (2-21) which is limited by the transmission shaft limiting block (2-6) on the inner side of the central positioning tower (2-4) through a transmission rod, the side transmission shaft (2-21) is evenly spaced with side positioning block unfolding control sliders (2-7), the two sides of the inverted trapezoidal side positioning block unfolding control slider (2-7) are respectively slidably connected to one end of the side positioning block (2-5), and the end of the side transmission shaft lifting control rotating shaft (2-8) is provided with a handle.

3. The center rapid positioning structure according to claim 2, characterized in that: The front and rear positioning block control handle (2-10) is installed on the side of the desktop platform (2-2) through a bracket, and is connected to one end of the front and rear positioning block control shaft (2-12) through a transmission connecting rod (2-11). The other end of the front and rear positioning block control shaft (2-12) is transmission-connected to the lifting gear box bottom plate (2-13). The lifting rod of the lifting gear box bottom plate (2-13) controls the lifting of the front and rear positioning block control connecting plate (2-14). The front and rear positioning block control connecting plate (2-14) is fixedly connected to the front and rear transmission shaft (2-15) movably installed in the central positioning tower (2-4) through the front and rear transmission shaft limit blocks (2-17) near the edge. Front and rear positioning block expansion control sliders (2-16) are arranged at equal intervals on the front and rear transmission shaft (2-15). The inverted trapezoidal front and rear positioning block expansion control sliders (2-16) are slidably connected to the front and rear positioning blocks (2-18) on the side.

4. The center rapid positioning structure according to claim 3, characterized in that: The side transmission shaft lifting control gear box (2-9) and the lifting gear box bottom plate (2-13) are both equipped with liftable support rods controlled by gears and toothed belts.

5. The center rapid positioning structure according to claim 1, characterized in that: The ends of the jacking head one (2-1), the jacking head two (2-19) and the jacking head three (2-20) are all equipped with hard rubber pads.

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