Welding tool for front overturning arm of cab
By designing a welding tool for the front flip arm of the cab, the positioning and compression mechanism on the base plate of the first and second-order workpieces can be used to accurately position and tighten the flip arm, which solves the problems of many welding processes, low efficiency and poor quality, improves production efficiency and reduces costs.
Patent Information
- Application Number
- CN202421624695.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-10
AI Technical Summary
There are many welding processes for the front flip arm of the existing machining cab, which leads to low operating efficiency and high input costs, and poor consistency in manual welding, making welding quality uncontrollable.
A cab front flip arm welding tool is designed, including a first-order workpiece base plate and a second-order workpiece base plate. By setting up a forward positioning and pressing mechanism of the flip arm, a retaining ring positioning boss, a sleeve positioning and pressing mechanism, a stop-rotating block positioning and pressing mechanism and an integrated positioning and pressing mechanism, the precise positioning and pressing of the flip arm is achieved, and the welding process is reduced.
By reducing the welding process to two sequences, production efficiency is improved, production costs are reduced, and the consistency of welding quality is ensured.
Smart Images
Figure CN222999940U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of welding of the front turnover arm of a commercial vehicle cab, and particularly relates to a welding tooling for the front turnover arm of a cab. Background Art
[0002] As Figure 1 and Figure 2 shown in the structure of the front turnover arm of the cab: it includes a turnover arm 1, a bushing 2 is welded on the front end of the turnover arm, a screw 3 and a washer 4 are welded on the side surface of the rear end of the turnover arm, an outer gasket 5 and a retaining ring 6 are welded on the bottom surface of the turnover arm, a rotation stop block 7 is arranged on the other side surface of the turnover arm relative to the screw, and an inner gasket 8 is arranged in the arm cavity of the turnover arm.
[0003] Currently, the problems existing in the existing processing of the front turnover arm of the cab are as follows: 1) There are many welding processes, and a large number of welding toolings and employees are invested, resulting in low operation efficiency and high input costs; 2) Manual welding has the problem of poor consistency, the welding quality cannot be controlled, and the efficiency is low. Summary of the Invention
[0004] The utility model provides a welding tooling for the front turnover arm of a cab, aiming to solve the problems of low production efficiency and poor quality existing in the existing production method.
[0005] To solve the above technical problems, the technical solution of the utility model is: a welding tooling for the front turnover arm of a cab, including a first - order tooling base plate and a second - order tooling base plate, characterized in that: a forward positioning and pressing mechanism for the turnover arm, a retaining ring positioning boss, a bushing positioning and pressing mechanism, a rotation stop block positioning and pressing mechanism and an integrated positioning and pressing mechanism are arranged on the first - order tooling base plate, and the integrated positioning and pressing mechanism is used for positioning and pressing the washer and the screw; a reverse positioning and pressing mechanism for the turnover arm is arranged on the second - order tooling base plate, and the reverse positioning and pressing mechanism for the turnover arm is used for welding the gasket on the turnover arm and full - welding the retaining ring.
[0006] Further limiting the above technical solution, the forward positioning and pressing mechanism for the turnover arm: includes a positioning seat, a pair of positioning pins are arranged on the top surface of the positioning seat, the positioning pins are used for positioning the turnover arm and the inner gasket, a window is arranged on the top surface of the positioning seat, and a pneumatic clamp is arranged in the positioning seat, and the pressing arm of the pneumatic clamp passes through the window and is used for pressing the inner gasket.
[0007] Further limiting the above technical solution, the retaining ring positioning boss is in a stepped shape, and the stepped surface of the retaining ring positioning boss is used for positioning the retaining ring.
[0008] Further limit the above technical solution. The bushing positioning and pressing mechanism includes pneumatic positioning pins arranged oppositely. The structure of the pneumatic positioning pin includes a bushing cylinder seat. A guiding sleeve is fixed on one side surface of the bushing cylinder seat. A bushing positioning pin is arranged inside the guiding sleeve. The bushing positioning pin is driven by a bushing cylinder on the bushing cylinder seat.
[0009] Further limit the above technical solution. The anti-rotation block positioning and pressing mechanism includes an anti-rotation block cylinder seat. An anti-rotation block guiding sleeve is arranged on one side surface of the anti-rotation block cylinder seat. An anti-rotation block positioning pin is arranged inside the anti-rotation block guiding sleeve. The positioning end of the anti-rotation block positioning pin can pre-position the anti-rotation block. The anti-rotation block positioning pin is driven by an anti-rotation block cylinder. A limiting block is arranged on the anti-rotation block cylinder seat. The limiting block is used to limit the rotation of the anti-rotation block.
[0010] Further limit the above technical solution. The integrated positioning and pressing mechanism includes a guiding seat. A guiding slider is arranged inside the cavity of the guiding seat. A washer positioning pin and a screw positioning cylinder are arranged on the side surface of the guiding slider. The positioning end of the washer positioning pin can pre-position the washer. The screw sleeve can pre-position the screw. The slider is driven by a compound cylinder.
[0011] Further limit the above technical solution. The reverse positioning and pressing mechanism of the flipping arm includes a reverse positioning mechanism and a gasket pressing mechanism. The structure of the reverse positioning mechanism includes a reverse positioning seat. The reverse positioning seat matches the arm cavity of the flipping arm. A fixing pin is arranged on the top surface of the reverse positioning seat. The fixing pin is used to reversely position the flipping arm and the gasket. The gasket pressing mechanism is used to press the gasket.
[0012] Beneficial effects: The welding tooling for producing the front flipping arm of the cab in the present utility model is reduced to two processes, which can improve production efficiency and reduce production costs. The present utility model can be applied to an automatic welding line, ensuring the consistency of welding quality. Description of the Drawings
[0013] Figure 1 It is the front view of the flipping arm in the background art.
[0014] Figure 2 It is the reverse view of the flipping arm in the background art.
[0015] Figure 3 It is the structure diagram of the first-process tooling in the present utility model.
[0016] Figure 4 It is the structure diagram of the second-process tooling in the present utility model.
[0017] Figure 5 It is the usage state of the first-process tooling Figure 1 。
[0018] Figure 6 It is the usage state of the first-process toolingFigure 2 。
[0019] Figure 7 It is a diagram of the usage state of the two-step tooling. Specific implementation manners
[0020] A welding tooling for the front flip arm of a cab, which includes a first-step tooling bottom plate and a second-step tooling bottom plate. On the first-step tooling bottom plate, there are a forward positioning and clamping mechanism for the flip arm, a retaining ring positioning boss, a bushing positioning and clamping mechanism, a rotation-stop block positioning and clamping mechanism, and an integrated positioning and clamping mechanism. The integrated positioning and clamping mechanism is used to position and clamp the washer and the screw. On the second-step tooling bottom plate, there is a reverse positioning and clamping mechanism for the flip arm, and the reverse positioning and clamping mechanism for the flip arm is used to weld the gasket to the flip arm and perform full welding on the retaining ring.
[0021] As Figure 3 shown, the forward positioning and clamping mechanism for the flip arm: includes a positioning seat 11 fixed on the first-step tooling bottom plate 10. On the top surface of the positioning seat, there are a pair of positioning pins 12, and the positioning pins are used to position the flip arm and the inner gasket. There is a window on the top surface of the positioning seat, and there is a pneumatic clamp 13 inside the positioning seat. The pressing arm of the pneumatic clamp passes through the window and is used to clamp the inner gasket. This structure is compact, with low manufacturing cost and convenient clamping of parts.
[0022] The pneumatic clamp belongs to conventional technology in this field and is mainly composed of a quick clamp and a cylinder.
[0023] As Figure 3 shown, the retaining ring positioning boss 14 is in a stepped shape, and the stepped surface of the retaining ring positioning boss is used to position the retaining ring. The retaining ring positioning boss is fixed on the first-step tooling bottom plate by screws. This structure is simple, with low manufacturing cost and ensures the positioning accuracy of the retaining ring.
[0024] As Figure 3 shown, the bushing positioning and clamping mechanism: includes pneumatic positioning pins arranged oppositely. The structure of the pneumatic positioning pin: includes a bushing cylinder seat 15 fixed on the first-step tooling bottom plate. On one side surface of the bushing cylinder seat, a guiding sleeve 16 is fixed, and a bushing positioning pin 17 is arranged inside the guiding sleeve. The bushing positioning pin is driven by a bushing cylinder 18 on the bushing cylinder seat. This structure is simple, with low manufacturing cost and ensures the positioning accuracy of the bushing.
[0025] As Figure 3As shown in the figure, the structure of the anti-rotation block positioning and pressing mechanism: It includes an anti-rotation block cylinder seat 19 fixed on the first-stage tooling base plate. On one side of the anti-rotation block cylinder seat, an anti-rotation block guide sleeve 20 is fixed. An anti-rotation block positioning pin 21 that slides is arranged inside the anti-rotation block guide sleeve. The positioning end of the anti-rotation block positioning pin is in a stepped shape, which can pre-position the anti-rotation block. The anti-rotation block positioning pin is driven by an anti-rotation block cylinder 22. A limit block 23 is fixed on the anti-rotation block cylinder seat, and the limit block is used to limit the rotation of the anti-rotation block. This structure is simple and has a low manufacturing cost, ensuring the positioning accuracy of the anti-rotation block.
[0026] As Figure 3 shown, the integrated positioning and pressing mechanism: It includes a guide seat 24 fixed on the first-stage tooling base plate. A guide slider 25 is arranged inside the guide seat cavity. A washer positioning pin 26 and a screw positioning cylinder 27 are fixed on the side surface of the guide slider. The positioning end of the washer positioning pin is in a stepped shape, which can pre-position the washer. The screw sleeve can pre-position the screw. The slider is driven by a composite cylinder 28. Adopting an integrated structure is beneficial to reducing costs and ensuring the positioning accuracy.
[0027] There are two sets of clamping mechanisms composed of a forward positioning and pressing mechanism for the flip arm, a retaining ring positioning boss, a bushing positioning and pressing mechanism, an anti-rotation block positioning and pressing mechanism, and an integrated positioning and pressing mechanism on the first-stage tooling base plate. This structure can improve production efficiency and reduce production costs. This structure can simultaneously complete the first-stage welding operations of two sets of front flip arms, which is beneficial to improving production efficiency and reducing production costs.
[0028] As Figure 4 shown, the reverse positioning and pressing mechanism for the flip arm: It includes a reverse positioning mechanism and a gasket pressing mechanism. The structure of the reverse positioning mechanism: It includes a reverse positioning seat 30 fixed on the second-stage tooling base plate 29. The reverse positioning seat matches the arm cavity of the flip arm. A fixed pin 31 is arranged on the top surface of the reverse positioning seat, and the fixed pin is used for reverse positioning of the flip arm and the gasket. The gasket pressing mechanism 32 is used to press the gasket. This structure is simple and has a low manufacturing cost, ensuring the positioning accuracy.
[0029] Two sets of reverse positioning mechanisms are provided and share one set of gasket pressing mechanisms. The gasket pressing mechanism 32 is mainly composed of two sets of quick clamps and a cylinder. The handle ends of the two sets of quick clamps are connected to the gasket pressing cylinder through a hinge seat. This structure can simultaneously complete the second-stage welding operations of two sets of front flip arms, which is beneficial to improving production efficiency and reducing production costs.
[0030] 1) Forward positioning and pressing mechanism for the flip arm: As Figure 5 and Figure 6As shown, the flipping arm is placed on the positioning seat. The positioning end of the positioning pin passes through the process hole on the flipping arm and penetrates into the arm cavity of the flipping arm. The arm cavity of the flipping arm faces upward. The inner gasket is positioned in the flipping arm through the positioning pin. There is a process window on the flipping arm. The pressing arm of the pneumatic clamp is located within the process window. Start the pneumatic clamp, and the pressing arm of the pneumatic clamp presses the inner gasket tightly.
[0031] 2) Retaining ring positioning boss: As Figure 5 and Figure 6 shown, before clamping the flipping arm, the retaining ring needs to be pre-positioned; when pressing the flipping arm tightly, the retaining ring presses through the bottom surface of the flipping arm.
[0032] 3) Bush positioning and pressing mechanism: As Figure 5 and Figure 6 shown, the distance between the relatively arranged guiding sleeves is adapted to the axial length of the bush. After the bush is placed between the two guiding sleeves and positioned through the bush slot on the flipping arm, start the bush cylinder, and the relatively arranged bush positioning pins are simultaneously inserted into the bush to achieve positioning and pressing; the two guiding sleeves limit the axial displacement of the bush, and the bush positioning pins limit the radial displacement of the bush.
[0033] 4) Anti-rotation block positioning and pressing mechanism: As Figure 5 and Figure 6 shown, before clamping the flipping arm, the anti-rotation block positioning pin cooperates with the limiting block to pre-position the anti-rotation block. Start the anti-rotation block cylinder, and the positioning end of the anti-rotation block positioning pin is inserted into the corresponding process hole on the flipping arm. At the same time, the anti-rotation block is pressed tightly on the flipping arm through the table surface of the anti-rotation block positioning pin; the limiting block does not interfere with the movement of the anti-rotation block; the limiting block also has the function of limiting the flipping arm, that is, after the flipping arm is clamped, the limiting block fits with the side surface of the flipping arm.
[0034] 5) Integrated positioning and pressing mechanism: As Figure 5 and Figure 6 shown, before clamping the flipping arm, the washer is pre-positioned through the washer positioning pin, and the screw is pre-positioned through the screw sleeve. Start the composite cylinder to push the slider.
[0035] The positioning end of the washer positioning pin is inserted into the corresponding process hole on the flipping arm. At the same time, the washer is pressed tightly on the flipping arm through the table surface of the washer positioning pin, and at the same time, the screw is pressed tightly on the flipping arm through the screw sleeve.
[0036] 6) Perform the first-stage welding, where the retaining ring is first fixed by spot welding.
[0037] 7) After the first-stage welding is completed, remove the flipping arm. After the flipping arm is flipped, it is clamped on the flipping arm reverse positioning and pressing mechanism.
[0038] 8) Flipping arm reverse positioning and pressing mechanism: As Figure 7As shown, the flipping arm is placed on the reverse positioning seat. The positioning ends of the three fixing pins pass through the process holes on the flipping arm and protrude from the inside of the flipping arm. The bottom surface of the flipping arm faces upward. The outer gasket is positioned on the bottom surface of the flipping arm through the fixing pins. The top surface of the fixing pin is flush with the top surface of the outer gasket. Start the gasket pressing mechanism to press the outer gasket;
[0039] 9) Perform the second-stage welding, where the retaining ring is fully welded.
Claims
1. A cab front flip arm welding tool, comprising a first-order tool base plate and a second-order tool base plate, characterized in that: A flip arm forward positioning and clamping mechanism, a retaining ring positioning boss, a sleeve positioning and clamping mechanism, a stop block positioning and clamping mechanism and an integrated positioning and clamping mechanism are provided on the first-order tooling base plate. The integrated positioning and clamping mechanism is used to position and clamp the gasket and the screw; a flip arm reverse positioning and clamping mechanism is provided on the second-order tooling base plate. The flip arm reverse positioning and clamping mechanism is used to weld the gasket to the flip arm and fully weld the retaining ring.
2. The cab front flip arm welding tool according to claim 1, characterized in that: The flip arm positive positioning and clamping mechanism comprises a positioning seat, a pair of positioning pins are arranged on the top surface of the positioning seat, the positioning pins are used to position the flip arm and the inner gasket, a window is arranged on the top surface of the positioning seat, a pneumatic clamp is arranged in the positioning seat, and the pressure arm of the pneumatic clamp is used to clamp the inner gasket after passing through the window.
3. A cab front flip arm welding tool according to claim 1 or 2, characterized in that: The retaining ring positioning boss is in a step shape, and the step surface of the retaining ring positioning boss is used for positioning the retaining ring.
4. The cab front flip arm welding tool according to claim 3, characterized in that: The sleeve positioning and clamping mechanism includes pneumatic positioning pins that are relatively arranged. The structure of the pneumatic positioning pin includes a sleeve cylinder seat, a guide sleeve is fixed on one side of the sleeve cylinder seat, a sleeve positioning pin is arranged in the guide sleeve, and the sleeve positioning pin is driven by the sleeve cylinder on the sleeve cylinder seat.
5. A cab front flip arm welding tool according to claim 1, 2 or 4, characterized in that: The stop block positioning and clamping mechanism includes a stop block cylinder seat, a stop block guide sleeve is provided on one side of the stop block cylinder seat, a stop block positioning pin is provided in the stop block guide sleeve, the positioning end of the stop block positioning pin can pre-position the stop block, and the stop block positioning pin is driven by the stop block cylinder; a limit block is provided on the stop block cylinder seat, and the limit block is used to limit the rotation of the stop block.
6. The cab front flip arm welding tool according to claim 5, characterized in that: The integrated positioning and clamping mechanism comprises a guide seat, a guide slider is arranged in the guide seat cavity, a washer positioning pin and a screw positioning cylinder are arranged on the side of the guide slider, the positioning end of the washer positioning pin can pre-position the washer, and the screw sleeve can pre-position the screw; the slider is driven by a composite cylinder.
7. A cab front flip arm welding tool according to claim 1 or 2 or 4 or 6, characterized in that: The reverse positioning and pressing mechanism of the flip arm includes a reverse positioning mechanism and a gasket pressing mechanism; the structure of the reverse positioning mechanism includes a reverse positioning seat, the reverse positioning seat matches the arm cavity of the flip arm, a fixing pin is provided on the top surface of the reverse positioning seat, the fixing pin is used for reverse positioning the flip arm and the gasket, and the gasket pressing mechanism is used for pressing the gasket.