A kind of hard pipe-rubber pipe clamp assembly pneumatic tooling auxiliary equipment of booster pipe
By designing a pneumatic tooling auxiliary device for assembling rigid pipe and rubber hose clamps in pressurization pipes, the problems of low efficiency, unstable quality, and high safety hazards in the connection between rigid pipes and rubber hoses in the existing technology have been solved. The device enables precise assembly of clamps, improves assembly efficiency and quality, and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI QUNLI RUBBER & PLASTIC PROD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, the connection between the rigid pipe and rubber hose of the automotive engine turbocharger pipeline system mainly relies on manual operation, which has problems such as low efficiency, unstable quality, high safety hazards and high cost. Moreover, the existing semi-automatic tooling has limited functions and poor adaptability, and cannot effectively solve the problems of radial misalignment and axial displacement of the clamp.
Design a pneumatic tooling auxiliary device for assembling rigid pipe-rubber hose clamps for booster pipes. By improving the clamp tooling structure and pneumatic components, integrating cylinders and slide rails, the device achieves precise clamp assembly, ensuring axial and radial alignment between the clamp and the hose. Combined with manual disc drive, the operation process is simplified.
It improves assembly efficiency and quality, reduces scrap rate, ensures consistent clamping force, avoids radial and axial misalignment, enhances assembly accuracy and safety, and saves rework costs.
Smart Images
Figure CN224587454U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical technology of IPC classification B23P21 / 00 for assembling various different components into a combined unit, and relates to the field of turbocharger assembly technology, belonging to the field of automotive parts assembly. In particular, it is an improved technology of pneumatic auxiliary equipment for assembling a rubber fitting and installing a clamp on the rigid pipe end of a turbocharger. It is applicable to the production and manufacturing of pipeline systems such as intercooler pipes and turbocharger pipes in automotive engines. Background Technology
[0002] In automotive engine turbocharging piping systems, rigid pipes and rubber hoses are typically connected using clamps for fastening.
[0003] Patent application 202110710228.X discloses an automotive hose clamp assembly device, including an assembly fixture for assembling a hose and a metal clamp. The assembly fixture includes an auxiliary installation component for opening the metal clamp and a clamp assembly component for fitting the metal clamp onto the hose. The auxiliary installation component includes an opening member and an opening drive component. The clamp assembly component includes a clamp support component for installing the opened metal clamp, a hose support component for fixing the hose, and an adhesive dispensing component for bonding the metal clamp and the hose.
[0004] Traditional assembly processes rely almost entirely on manual operation, which presents the following problems:
[0005] Low efficiency: Manual assembly requires sequential steps such as opening, positioning, and tightening of clamps, resulting in long assembly times for a single part, which is difficult to meet the cycle time requirements of modern production lines.
[0006] Unstable quality: The torque of the clamp is affected by the force of manual operation, which can easily lead to insufficient torque or overload, resulting in pipeline sealing failure or clamp breakage.
[0007] Safety hazard: During the assembly of high-pressure pipelines, manual operation may cause the pipeline to fall off due to the clamps not being fully tightened.
[0008] High cost: Manual assembly requires specialized tools, and the high scrap rate leads to increased rework costs.
[0009] In addition, some companies have attempted to introduce semi-automatic tooling in existing technologies, but these have problems such as limited functionality and poor adaptability. While significant investment has been made in the automatic control components, the assembly yield and efficiency have not seen significant improvements. For example, a utility model patent discloses an "automatic assembly tooling for booster pipelines," which achieves torque control but fails to address the radial and axial misalignment of the clamps, resulting in insufficient assembly accuracy. Utility Model Content
[0010] To solve the above problems, this utility model designs a pneumatic tooling auxiliary device for assembling a rigid pipe-rubber hose clamp in a pressurization pipe. By improving the clamp tooling structure and the working coordination between the rigid pipe-rubber hose and the clamp tooling, and integrating pneumatic components, the tooling layout is simplified, and manual operation is conveniently assisted, so as to achieve precise clamp assembly.
[0011] Therefore, this utility model provides a pneumatic tooling auxiliary device for assembling a rigid pipe-rubber hose clamp for a pressure booster pipe, comprising: a worktable, a first tooling fixture, a second tooling fixture, a clamping fixture, a slide rail, a first cylinder, a second cylinder, and a slide base. The first tooling fixture is installed on the left side of the worktable, and the second tooling fixture is installed on the right side of the worktable. The clamping fixture is installed between the first and second tooling fixtures. The first tooling fixture comprises upper and lower molds. The lower mold of the first tooling fixture is fixedly installed on the worktable, and the top of the upper mold is connected upwards to the first cylinder. The second tooling fixture also comprises upper and lower molds. The top of the upper mold is connected upwards to the second cylinder, and the bottom of the lower mold is slidably installed on the slide rail via the slide base. The slide rail extends left and right and is fixedly installed on the right side of the top surface of the worktable. The clamping fixture is installed on the outer left side of the lower mold of the second tooling fixture.
[0012] The first tooling fixture and the second tooling fixture are respectively provided with mold grooves for accommodating hard tubes of products on the upper and lower mold mating surfaces; the clamp fixture is provided with a mold groove in the middle of its top surface.
[0013] In order to achieve the above objective, the present invention is configured as follows:
[0014] Specifically, the first cylinder is mounted on the upper end of the first bracket, and the second cylinder is mounted on the upper end of the second bracket; the first bracket is fixedly mounted on the middle and rear part of the worktable; the second bracket is fixedly mounted on the rear side of the slide. The second cylinder, the second bracket, and the second tooling fixture move left and right along the slide rail with the slide.
[0015] In particular, a limiting support frame is erected on the worktable on the left side of the first tooling fixture, and there is a mold groove on the top surface or the right outer wall of the limiting support frame.
[0016] In particular, the lower mold or slide of the second tooling fixture has a hinged seat fixedly mounted on its outer side wall, and the right side of the hinged seat 9 is hinged to a manual disc via a connecting rod. The manual disc is rotatably mounted on the right end of the worktable.
[0017] In particular, the manual disc is coaxially connected to a rotating seat on its lower side, and the rotating seat is fixedly installed on the right end of the top surface of the worktable.
[0018] In particular, the handle is radially connected to the outer edge of the manual disc. The angle between the handle's central axis and the connecting rod's central axis is 90°.
[0019] In particular, the top surface of the clamp has an arc groove in the middle, and the left end of the arc groove has a ring groove with a larger inner diameter.
[0020] Compared with the prior art, the beneficial effects of this utility model are:
[0021] The workbench features a well-organized arrangement of rigid and rubber hose fixtures for the booster hose. The rubber hose fixtures are positioned on slide rails, and the manual operation mechanism is integrated with a disc-driven transmission system, making operation easier, more efficient, safer, and more stable. The clamp fixtures are axially mounted on the manually operated sliding structure, with interlocking sleeves for precise alignment. This ensures the clamps are accurately fitted onto the flexible and rigid hose connections in one step, maintaining accurate positioning, appropriate clamp torque, and consistent tightening force. This prevents radial and axial misalignment, facilitating easy installation and high assembly efficiency. The clamps are easily tightened manually, and the clamp set screws are securely fastened. The installation of the clamps and hoses is convenient and efficient, preventing loosening and detachment. This improves assembly quality and reduces rework costs. Attached Figure Description
[0022] The following figures are illustrative and should not be construed as limiting the scope of this invention. Referring to the figures helps the reader understand the embodiments of this invention and further appreciate its advantages and technical features.
[0023] Figure 1 This is a schematic diagram of the rigid pipe, rubber hose, and clamp structure of the booster pipe to be assembled.
[0024] Figure 2 A schematic diagram showing the assembly of the booster pipe using rigid pipes, rubber hoses, and clamps.
[0025] Figure 3 This is a schematic diagram of the isometric structure of Example 1.
[0026] Figure 4 for Figure 3 The diagram shows the structure of the clamping fixture.
[0027] The reference numerals in the figures include:
[0028] 1. Pressure boosting pipe; 101. Rigid pipe; 102. Rubber hose; 103. Clamping fitting;
[0029] 2. Workbench, 3. First tooling fixture, 4. Second tooling fixture, 5. Limiting support frame, 6. Clamping fixture, 7. Slide rail, 8. Connecting rod, 9. Hinge seat, 10. First cylinder, 11. Second cylinder, 12. First bracket, 13. Second bracket, 14. Rotating seat, 15. Manual disc, 16. Handle, 17. Slide seat. Detailed Implementation
[0030] It should be noted that:
[0031] In the description of this utility model, unless otherwise expressly specified and limited, the terms "comprising" and "having," and any variations thereof, are intended to cover other possible options under the same logic not listed. For example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or device. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Furthermore, terms such as "horizontal," "vertical," and "suspended" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. The terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components.
[0032] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In case of any conflict, the definitions in this specification shall prevail.
[0033] As attached Figure 1 , 2 As shown, the right end of the product rigid tube 101, which has a three-dimensional S-shaped rotating shape, is tightly inserted into the left port of the product rubber tube 102. A clamp 103 is then installed on the outer wall of the tightly nested interface, and the fastening screw is tightened to lock it in place, thus completing the assembly of the booster tube.
[0034] Research has revealed the following main problems with existing manual-based pressurization pipe clamp assembly techniques:
[0035] Radial misalignment: Excessive deviation in coaxiality between the clamp and the pipeline causes uneven stress on the sealing surface.
[0036] Axial misalignment: The clamp installation position deviates from the design reference, resulting in pipeline interference or inability to assemble.
[0037] Torque runaway: Traditional pneumatic tools lack closed-loop torque control, making it difficult to ensure consistent clamping force.
[0038] However, there are also limitations to improving the technology:
[0039] For purely mechanical positioning fixtures: if manual adjustment is required, they cannot adapt to switching between multiple specifications of pipelines.
[0040] For single torque control fixtures: the problem of positional offset during clamp installation has not yet been resolved.
[0041] For semi-automatic opening fixtures: manual intervention is required in the clamp transfer process, resulting in limited efficiency improvement.
[0042] This utility model includes: a workbench 2, a first tooling fixture 3, a second tooling fixture 4, a clamping fixture 6, a slide rail 7, a first cylinder 10, a second cylinder 11, and a slide block 17. The first tooling fixture 3 is installed on the left side of the workbench 2, and the second tooling fixture 4 is installed on the right side of the workbench 2. The clamping fixture 6 is installed between the first tooling fixture 3 and the second tooling fixture 4. The first tooling fixture 3 includes upper and lower molds. The lower mold of the first tooling fixture 3 is fixedly installed on the workbench 2, and the top of the upper mold of the first tooling fixture 3 is connected upwards to the first cylinder 10. The second tooling fixture 4 also includes upper and lower molds. The top of the upper mold of the second tooling fixture 4 is connected upwards to the second cylinder 11, and the bottom of the lower mold of the second tooling fixture 4 is slidably installed on the slide rail 7 via the slide block 17. The slide rail 7 extends left and right and is fixedly installed on the right side of the top surface of the workbench 2. The clamping fixture 6 is installed on the outer left side of the lower mold of the second tooling fixture 4.
[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0044] Example 1: As shown in the attached document Figure 3 As shown, the upper and lower mold mating surfaces of the first tooling fixture 3 and the second tooling fixture 4 are respectively provided with mold grooves to accommodate the product rigid tube 101; the top surface of the clamping fixture 6 is provided with a mold groove in the middle. The mold grooves provided on the upper and lower mold mating surfaces of the first tooling fixture 3 and the second tooling fixture 4 respectively accommodate the right end of the product rigid tube 101 and at least the left section of the product rubber tube 102; the top surface of the clamping fixture 6 has a mold groove in the middle to accommodate the clamping part 103.
[0045] In the aforementioned configuration, the first cylinder 10 is mounted on the upper end of the first bracket 12, and the second cylinder 11 is mounted on the upper end of the second bracket 13. The first bracket 12 is fixedly mounted on the middle and rear part of the worktable 2, and the second bracket 13 is fixedly mounted on the rear side of the slide block 17. The second cylinder 11, the second bracket 13, and the second tooling fixture 4 move left and right along the slide block 17 on the slide rail 7.
[0046] As described above, a limiting support frame 5 is erected on the workbench 2 on the left side of the first tooling fixture 3, and a mold groove is provided on the top surface or the outer right side wall of the limiting support frame 5. The mold groove of the limiting support frame 5 is used to accommodate and support or fix the middle left end of the product rigid tube 101.
[0047] As described above, the lower mold or slide 17 of the second tooling fixture 4 has a hinged seat 9 fixedly mounted on its outer side wall. The right side of the hinged seat 9 is hinged to the manual disc 15 via a connecting rod 8. The manual disc 15 is rotatably mounted on the right end of the worktable 2.
[0048] In this embodiment of the invention, a rotating seat 14 is coaxially connected to the lower side of the manual disc 15, and the rotating seat 14 is fixedly installed on the right end of the top surface of the workbench 2. Furthermore,
[0049] In this embodiment of the invention, the handle 16 is radially connected to the outer edge of the manual disc 15. Preferably, the central axis of the handle 16 forms a 90° angle with the central axis of the connecting rod 8.
[0050] Further details are attached. Figure 4 As shown, specifically, the top surface of the clamp 6 has an arc groove in the middle, and the left end of the arc groove has a larger inner diameter groove. The left end of the product rubber tube 102 is placed on the arc groove of the clamp 6, and the groove at the left end of the arc groove of the clamp 6 is exactly for placing the clamp 103.
[0051] The working steps of this embodiment are as follows:
[0052] 1) Check whether all the tooling has returned to its original position; that is, the first cylinder 10 and the second cylinder 11 are in the raised position, the first tooling fixture 3 and the second tooling fixture 4 are in the upper and lower mold open position, and the first tooling fixture 3, the second tooling fixture 4 and the clamping fixture 6 are in the disengaged position.
[0053] 2) The right end of the product rigid tube 101 is placed into the upper and lower molds of the first tooling fixture 3. The first cylinder 10 descends and pushes the upper and lower molds of the first tooling fixture 3 to close and fix the product rigid tube 101. The right end of the product rigid tube 101 is exposed on the right end face of the first tooling fixture 3. At the same time, the left end of the product rigid tube 101 is pressed against and fixed on the limiting support frame 5.
[0054] 3) The product rubber tube 102 is placed in the upper and lower molds of the second tooling fixture 4. The second cylinder 11 descends and pushes the second tooling fixture 4 to close and fix the product rubber tube 102. The left end of the product rubber tube 102 extends out of the second tooling fixture 4 and is placed flat on the clamping fixture 6.
[0055] 4) The clamp 103 is placed into the outer edge of the left end of the product rubber tube 102 in the clamp fixture 6 and accurately snapped into the groove of the clamp fixture 6;
[0056] 5) Move the handle 16 and rotate the manual disc 15. The rotation of the manual disc 15 drives the connecting rod 8 and the hinge seat 9 to push the slide 17 and the second tooling fixture 4, so that the left end of the product rubber tube 102 with the clamp 103 is aligned with the right end of the product rigid tube 101 and inserted into it, so that the left end of the product rubber tube 102 is pressed into the right end of the product rigid tube 101; at the same time, the clamp 103 is accurately fitted on the outside of the interface between the product rigid tube 101 and the product rubber tube 102.
[0057] 6) Use power tools to tighten the screws and lock the clamp 103 to ensure that the product rigid tube 101 and the product rubber tube 102 are tightly connected and fixed.
[0058] 7) When the first cylinder 10 and the second cylinder 11 are fully returned to their original positions, the first tooling fixture 3 and the second tooling fixture 4 are opened, and the assembled booster pipe is taken out from them.
[0059] In this embodiment of the invention, preferably, the working air pressure of the first cylinder 10 and the second cylinder 11 is 0.6±0.05MPa; the applicable pipe diameter for the rigid tube 101 is Φ15-Φ60mm, and the applicable pipe diameter for the rubber tube 102 is Φ20-Φ65mm; the assembly cycle time, including manual loading and unloading time, is ≤18s / piece; the equipment failure rate is <0.5%; it is compatible with different specifications of clamping parts 103, with an inner diameter range of Φ20-Φ80mm. The assembly stops when the clamping part 103 reaches 80% of the material's yield strength to prevent plastic deformation.
[0060] In this embodiment of the invention, the clamp component 103 is precisely positioned with a repeatability of ≤0.05mm. The weight of the clamp component 103 is counteracted, ensuring stable vertical movement. This solves problems such as radial / axial misalignment and torque loss of control. Assembly accuracy is improved by 300%, and the scrap rate is reduced from 2.1% to 0.3%.
[0061] Based on the embodiments of this utility model described above, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this utility model.
Claims
1. A pneumatic tooling auxiliary device for assembling a rigid pipe-rubber hose clamp for a booster pipe, comprising a workbench (2), a first tooling fixture (3), a second tooling fixture (4), a clamp fixture (6), a slide rail (7), a first cylinder (10), a second cylinder (11), and a slide block (17); characterized in that, A first tooling fixture (3) is installed on the left side of the workbench (2), and a second tooling fixture (4) is installed on the right side of the workbench (2). A clamping fixture (6) is installed between the first tooling fixture (3) and the second tooling fixture (4). The first tooling fixture (3) includes an upper and a lower mold. The lower mold of the first tooling fixture (3) is fixedly installed on the workbench (2), and the top of the upper mold of the first tooling fixture (3) is connected upward to the first cylinder (10). The second tooling fixture (4) includes an upper and a lower mold. The top of the upper mold of the second tooling fixture (4) is connected upward to the second cylinder (11), and the bottom of the lower mold of the second tooling fixture (4) is slidably installed on the slide rail (7) through the slide block (17). The slide rail (7) extends in the left and right directions and is fixedly installed on the right side of the top surface of the workbench (2). A clamping fixture (6) is installed on the outer wall of the left side of the lower mold of the second tooling fixture (4).
2. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, The upper and lower mold mating surfaces of the first tooling fixture (3) and the second tooling fixture (4) are respectively provided with mold grooves for accommodating the product hard tube (101); the top surface of the clamping fixture (6) is provided with a mold groove.
3. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, The first cylinder (10) is installed on the upper end of the first bracket (12), and the second cylinder (11) is installed on the upper end of the second bracket (13); the first bracket (12) is fixedly installed in the middle and rear part of the worktable (2); the second bracket (13) is fixedly installed on the rear side of the slide (17).
4. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, A limiting support frame (5) is erected on the workbench (2) on the left side of the first tooling fixture (3). There is a mold groove on the top surface or the right outer wall of the limiting support frame (5).
5. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, The lower mold or slide (17) of the second tooling fixture (4) has a hinge seat (9) fixedly installed on the outer side wall. The right side of the hinge seat (9) is hinged to the manual disc (15) via the connecting rod 8.
6. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, The manual disc (15) is coaxially connected to the rotating seat (14) on the lower side, and the rotating seat (14) is fixedly installed on the right end of the top surface of the workbench (2).
7. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, The handle (16) is radially connected to the outer edge of the manual disc (15).
8. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 1, characterized in that, The top surface of the clamp (6) has an arc groove in the middle, and the left end of the arc groove has a larger inner diameter groove.
9. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 5, characterized in that, The manual disc (15) is mounted on the right end of the workbench (2).
10. The pneumatic tooling auxiliary equipment for assembling a rigid pipe-rubber hose clamp for a booster pipe according to claim 7, characterized in that, The angle between the central axis of the handle (16) and the central axis of the connecting rod (8) is 90°.