Sleeve limiting mechanism applied to welding fixture
By combining cylinders, hinges, and guide sleeves, the welding deformation and jamming problems of the sleeve limiting mechanism are solved, achieving stable limiting and convenient unpinning of double sleeves, thus improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520233011.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing sleeve limiting mechanisms suffer from welding deformation and jamming, occupy a large space, and cannot achieve simultaneous limiting of two sleeves, affecting production efficiency and product positioning stability.
The system employs a combination structure of cylinder, hinge, guide sleeve, and limit block. The hinge converts the longitudinal movement of the cylinder into the lateral movement of the limit block, thereby achieving stable positioning and convenient pin retraction of the double sleeve.
It reduced cost input, decreased welding deformation and jamming issues, improved production cycle time and product qualification rate, and optimized space utilization.
Smart Images
Figure CN223734182U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of automobile parts, concretely relates to a sleeve limiting mechanism applied to a welding fixture. BACKGROUND
[0002] At present, as shown in the figure, the sleeve positioning tool limits the spacing between the two sleeves after positioning the sleeves, ensuring the contour of the inside of the sleeve. Figure 1 However, using a cylinder to control the extension and retraction of the limiting block or using a fixed limiting block to position the sleeves occupies a large space and causes the parts to be stuck when they are withdrawn.
[0003] 1. When a fixed limiting mechanism (1') is used for limiting, there is welding deformation after the sleeve A (2') is welded, and the fixture is stuck when it is opened, affecting production efficiency.
[0004] 2. The sleeve of the front upper swing arm (3') is a double-sleeve structure, and the sleeve span is short. When a cylinder is used to control the limiting block, the fixture mechanism occupies a large space and cannot simultaneously limit the two sleeves. UTILITY MODEL CONTENTS
[0005] The utility model aims at overcoming the defects of the prior art, providing a sleeve limiting mechanism applied to a welding fixture, solving the sticking of the sleeve positioning and withdrawal, improving the production rhythm, solving the problem of insufficient space for the mechanism, improving the positioning stability of the product, and improving the product size qualification rate.
[0006] The utility model aims at overcoming the defects of the prior art, providing a sleeve limiting mechanism applied to a welding fixture, solving the sticking of the sleeve positioning and withdrawal, improving the production rhythm, solving the problem of insufficient space for the mechanism, improving the positioning stability of the product, and improving the product size qualification rate.
[0007] As a further technical scheme, when the cylinder connecting rod drives the hinge to retract, the limiting connecting rod drives the limiting block to extend outward, so that the limiting blocks on both sides of the guide sleeve simultaneously limit the corresponding sleeves on the swing arm body.
[0008] As a further technical scheme, when the cylinder connecting rod drives the hinge to extend outward, the limiting connecting rod drives the limiting block to retract inward, so that a gap is formed between the sleeve and the corresponding limiting block.
[0009] As a further technical scheme, the cylinder is fixed to the bottom of the guide sleeve through a fixed block, and the cylinder connecting rod penetrates the fixed block.
[0010] The beneficial effects of this utility model are as follows:
[0011] 1. Two limit blocks are controlled by one cylinder, reducing cost investment. After welding, the limit blocks retract and form a gap with the sleeve for easy part removal. This eliminates problems such as limit block wear and dimensional deviation caused by welding deformation, thus reducing the defect rate.
[0012] 2. By controlling the limit positions on both sides with a single cylinder, the product structure positioning requirements can be met, the welding cycle can be improved, and there is no mechanical interference. The mechanism space is sufficient, saving costs and space.
[0013] 3. The guide sleeve and guide hole are used to guide the limiting link, ensuring the stability of the limiting block when it extends and retracts. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the existing technology.
[0015] Figure 2 This is a schematic diagram of the structure of this utility model.
[0016] Explanation of reference numerals in the attached drawings: 1. Swing arm body; 2. Sleeve; 3. Cylinder; 4. Cylinder connecting rod; 5. Hinge; 6. Limiting connecting rod; 7. Guide sleeve; 8. Limiting block; 9. Fixing block. Detailed Implementation
[0017] The present invention will now be described in detail with reference to the accompanying drawings:
[0018] Example: As attached Figure 2 As shown, this sleeve limiting mechanism applied to welding fixtures includes a swing arm body 1, a sleeve 2, a cylinder 3, a cylinder connecting rod 4, a hinge 5, a limiting connecting rod 6, a guide sleeve 7, a limiting block 8, and a fixing block 9.
[0019] Reference Appendix Figure 2 The cylinder 3 is fixed to the bottom of the guide sleeve 7 via a fixing block 9, and the cylinder connecting rod 4 passes through the fixing block 9. Guide holes 10 are symmetrically opened on the left and right sides of the guide sleeve 7. A limiting connecting rod 6 slides through each guide hole 10. The two limiting connecting rods 6 (inner ends) are hinged together by a hinge 5, and the outer ends of the two limiting connecting rods 6 are respectively threaded to a limiting block 8. A cylinder connecting rod 4 is connected to the piston rod of the cylinder 3. The cylinder connecting rod 4 extends into the guide sleeve 7 and connects to and drives the hinge 5.
[0020] When the cylinder connecting rod 4 drives the hinge 5 to retract, the limiting connecting rod 6 drives the limiting block 8 to extend outward, so that the limiting blocks 8 on both sides of the guide sleeve 7 simultaneously limit the corresponding sleeve 2 on the swing arm body 1. When the cylinder connecting rod 4 drives the hinge 5 to extend outward, the limiting connecting rod 6 drives the limiting block 8 to retract inward, so that a gap is formed between the sleeve 2 and the corresponding limiting block 8.
[0021] The working process of this utility model:
[0022] 1. During assembly, cylinder 3 and hinge 5 are in the extended state, while limit link 6 and limit block 8 are in the retracted state, allowing the swing arm body 1 and sleeve 2 to be installed accordingly.
[0023] 2. When the clamp is clamped and positioned, the cylinder 3 drives the hinge 5 to retract, causing the limit link 6 and the limit block 8 to extend outward, so that the limit is in place and the position of the sleeve 2 is effectively restricted.
[0024] 3. When unloading parts after welding, cylinder 3 drives hinge 5 to extend outward, and hinge 5 drives limit link 6 and limit block 8 to retract inward, so that there is a gap between the two sleeves 2 and limit block 8, and the workpiece (swing arm body 1) can be taken out smoothly.
[0025] This invention utilizes a hinge mechanism to transform the longitudinal (up and down) telescopic motion of the cylinder into the lateral opening and closing motion of the limiting blocks on both sides. When the cylinder moves upward, it pushes the hinge to open the limiting blocks on both sides outward, whereby the two limiting blocks act as sleeve-limiting devices. This invention achieves the functions of multiple mechanisms with a simplified mechanism, greatly reducing the complexity of the overall welding fixture mechanism, freeing up more welding and operating space, and lowering the design and manufacturing costs of the welding fixture.
[0026] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.
Claims
1. A sleeve positioner for a welding fixture, comprising: Including cylinder (3), hinge (5), guide sleeve (7) and limit block (8), the cylinder (3) is fixed with guide sleeve (7), the two sides of guide sleeve (7) are symmetrically provided with guide hole (10), a limit connecting rod (6) is arranged in each guide hole (10), two limit connecting rods (6) are connected through hinge (5), and the outer end of two limit connecting rods (6) is respectively provided with a limit block (8);The piston rod of cylinder (3) is provided with cylinder connecting rod (4), the cylinder connecting rod (4) is inserted into guide sleeve (7), and is connected to drive hinge (5).
2. The sleeve position assurance mechanism for a welding fixture of claim 1, wherein: When the cylinder connecting rod (4) drives the hinge (5) to retract, the limit connecting rod (6) drives the limit block (8) to extend outward, so that the limit block (8) on the two sides of the guide sleeve (7) simultaneously limits the corresponding sleeve (2) on the swing arm body (1).
3. The sleeve position assurance mechanism for a welding fixture of claim 1 or 2, wherein: When the cylinder connecting rod (4) drives the hinge (5) to extend outward, the limit connecting rod (6) drives the limit block (8) to retract inward, so that a gap is formed between the sleeve (2) and the corresponding limit block (8).
4. The sleeve position assurance mechanism for a welding fixture of claim 1, wherein: The cylinder (3) is fixed with the bottom of the guide sleeve (7) through the fixed block (9), and the cylinder connecting rod (4) penetrates the fixed block (9).