Handle necking and flanging mechanism

Abstract

The utility model belongs to mechanical tool accessory technical field discloses a handle necking flanging mechanism, including fixed base, the movable block is slidably installed in the fixed base, the movable block both ends fixedly installed have side pressure piece, the end of two side pressure pieces is equipped with the resistance to touch inclined plane, two resistance to touch inclined planes are relatively arranged to the inside, the fixed base is equipped with two slideways symmetrically, two slideways are slidably installed with the sliding block, the sliding block is equipped with the matching inclined plane of angle matching resistance to touch inclined plane, the other end of sliding block is equipped with necking flanging arc line, the movable block is installed with the resistance to pole, the resistance to pole is located in the middle position of two slideways, the power end of movable block is installed with the hydraulic cylinder, adopts the structure design of the utility model, moves to the middle of two sliding blocks with the carrier that is equipped with handle, then moves movable block to be able to realize the necking flanging of handle work piece, simple and convenient fast, high efficiency, and the overall structure is compact, and the manufacturing cost is low.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical tooling accessories technology, specifically relating to a handle narrowing and flanging mechanism. Background Technology

[0002] In the current process of handle necking and flanging, automation technology still has significant immaturity issues. Most small and medium batch production scenarios still rely on manual assistance for positioning and loading / unloading. Manual operation mode results in long processing times for each piece, high labor intensity, and low error tolerance. Although ordinary stamping mechanisms can achieve single-step forming, the concentrated pressure from direct contact can easily cause the blank to crack and wrinkle, leading to a high scrap rate and indirectly reducing effective production efficiency. Hydraulic and pneumatic mechanisms have problems with slow response speed and long single-cycle cycles, and the changeover and debugging require a lot of time, further slowing down the overall production cycle. Utility Model Content

[0003] In view of the problems mentioned above in the background art, the purpose of this utility model is to provide a handle narrowing and flanging mechanism.

[0004] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0005] A handle tapering and flanging mechanism includes a fixed base, a movable block slidably installed inside the fixed base, and side pressing blocks fixedly installed at both ends of the movable block. Each end of the two side pressing blocks is provided with an abutting inclined surface, and the two abutting inclined surfaces are arranged inward and opposite to each other.

[0006] The fixed base is symmetrically provided with two slides, and a slider is slidably installed on each of the two slides. The slider is provided with a mating slope that matches the angle of the contacting slope, and the other end of the slider is provided with a constricted flange arc.

[0007] The movable block is equipped with a stop rod, which is rectangular and located in the middle of the two slide rails. A hydraulic cylinder is installed on the power end of the movable block.

[0008] Furthermore, the fixed base is provided with a limiting port, and the movable block is fixedly installed with a limiting rod corresponding to the position of the limiting port, which limits the movement distance of the abutment rod and prevents stamping damage to the handle workpiece.

[0009] Furthermore, both sides of the side pressure block are slidably in contact with the fixed base to assist in limiting the movement of the side pressure block.

[0010] Further, the slide rail is provided with a guide rail, the slider is slidably mounted on the guide rail, the fixed seat is provided with a sliding opening, the slider is fixedly mounted with a guide rod, the guide rod is located in the sliding opening, and limits the slider so that the movement of the slider does not deviate, ensuring the constriction and flanging effect when it subsequently contacts the workpiece.

[0011] Furthermore, the end of the abutment is provided with a rivet hole, which can be used to install various tooling for stamping and anchoring, so as to achieve the effect of anchoring the workpiece accessories.

[0012] The beneficial effects of using this utility model are as follows:

[0013] By adopting the structural design of this utility model, the carrier with the handle is moved between the two sliders, and then the moving block can be moved to realize the narrowing and flanging of the handle workpiece. It is simple, convenient, fast and efficient, and the overall structure is compact and the manufacturing cost is low. Attached Figure Description

[0014] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0015] Figure 1 This is a schematic diagram of an embodiment of the handle narrowing and flanging mechanism of this utility model;

[0016] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the handle narrowing and flanging mechanism of this utility model;

[0017] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of the handle narrowing and flanging mechanism of this utility model;

[0018] The symbols for the main components are explained below:

[0019] 1. Fixed base; 2. Moving block; 3. Side pressure block; 4. Abutting inclined surface; 5. Slide rail; 6. Sliding block; 7. Mating inclined surface; 8. Shrinking and flanging arc; 9. Support rod; 10. Hydraulic cylinder; 11. Limiting port; 12. Limiting rod; 13. Guide rail; 14. Slide opening; 15. Guide rod; 16. Rivet hole. Detailed Implementation

[0020] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides a handle tapering and flanging mechanism, including a fixed base 1, a movable block 2 slidably installed inside the fixed base 1, and side pressing blocks 3 fixedly installed at both ends of the movable block 2. The ends of the two side pressing blocks 3 are provided with abutting inclined surfaces 4, and the two abutting inclined surfaces 4 are arranged inwards and opposite to each other.

[0022] The fixed base 1 is symmetrically provided with two slides 5, and each slide 5 is slidably mounted with a slider 6. The slider 6 is provided with a mating inclined surface 7 that matches the angle of the contacting inclined surface 4, and the other end of the slider 6 is provided with a narrowing flange arc 8.

[0023] The movable block 2 is equipped with a stop rod 9, which is rectangular and located in the middle of the two slide rails 5. The power end of the movable block 2 is equipped with a hydraulic cylinder 10.

[0024] In this implementation case, the workpiece is automatically moved to the bottom of the fixed seat 1 by the matching carrier, waiting to be subjected to the necking and flanging operation;

[0025] Hydraulic cylinder 10 drives the sliding block 2 inside the fixed base 1 to slide, causing the side pressure blocks 3 at both ends to move synchronously. The radial force generated by the inward contact of the opposing inclined surfaces 4 of the side pressure blocks 3 with the matching inclined surfaces 7 of the sliders 6 pushes the two sliders 6 to slide towards each other along the symmetrical slide rails 5 of the fixed base 1. Simultaneously, the rectangular abutment 9 in the middle of the sliding block 2 axially positions the handle blank. It should be noted that this action of the abutment 9, while achieving positioning, can also achieve the purpose of punching and riveting holes in the handle by installing anchoring fixtures or other tools at the end of the abutment 9. As the sliding block 2 continues to descend, it continuously abuts the sliders. During the movement of 6, the two sliders 6 begin to contact the workpiece. Under hard contact, the constriction and flanging arc 8 at the end of the slider 6 radially compresses the blank to achieve uniform plastic deformation, completing the integrated forming of constriction and flanging. At the same time, the stop rod 9 can also limit the extreme position of the slider 6 to prevent it from moving excessively. That is, its working principle is to accurately convert axial power into radial forming force through inclined plane transmission. The synchronous action on both sides and the arc surface design ensure that the blank is subjected to uniform force, and the rectangular stop rod ensures positioning accuracy. Compared with traditional mechanisms, it greatly reduces cracking and wrinkling defects and improves product consistency.

[0026] The preferred fixed base 1 is provided with a limiting port 11, and the movable block 2 is fixedly installed with a limiting rod 12 corresponding to the position of the limiting port 11.

[0027] In this embodiment, a cylindrical blind hole is machined at the top of the fixed base 1, corresponding to the lower position of the movable block 2, serving as a limiting port 11. The depth of the blind hole is preset according to the maximum limiting stroke, and an installation groove can be reserved at the bottom of the hole for embedding a polyurethane buffer pad. The number of buffer pads can also achieve the purpose of limiting adjustment. The bottom of the movable block 2 is connected to a cylindrical limiting rod 12 by a thread, and its position ensures that the limiting rod is smoothly inserted into the blind hole without jamming when it moves downward. Furthermore, the length of the limiting rod 12 can be adjusted by the thread, or a limiting rod of different length specifications can be replaced. With the addition or removal of adjustable shims at the bottom of the blind hole, precise fine-tuning of the limiting stroke within the range can be achieved. During operation, the hydraulic cylinder 10 drives the movable block. 2. While sliding forward, the limiting rod 12 simultaneously inserts downward into the limiting port 11. When it moves to the set stroke, the end of the limiting rod abuts against the buffer pad or adjusting shim in the blind hole, and the moving block is forcibly stopped by mechanical hard limiting, thereby accurately controlling the maximum moving distance and forming pressure of the stop rod 9. By using the cooperation of the blind hole and the cylindrical rod, axial limiting is achieved while also having a radial guiding function, avoiding the limiting rod from deviating and causing limiting failure. The buffer pad design effectively absorbs the impact force, protecting the mechanical parts from rigid collision damage and preventing the handle workpiece from deforming or cracking due to excessive stamping. The adjustment method is flexible and convenient, adapting to the shrinking and flanging depth requirements of different specifications of handles.

[0028] Preferably, both sides of the side pressure block 3 are in sliding contact with the fixed base 1.

[0029] In this embodiment, the two sides of the side pressure block 3 are precision ground, and the corresponding positions of the fixed seat 1 are machined with guide grooves that match the two sides of the side pressure block 3, forming a surface contact guide fit. Furthermore, the inner wall of the guide groove can be selectively coated with high-temperature grease to reduce sliding friction resistance. This structure does not require additional auxiliary components such as guide rods and limit sleeves. It utilizes the structure of the side pressure block itself and the groove of the fixed seat to form an integrated limit. The implementation method is simple and compact, which not only ensures the straightness of the side pressure block 3 moving axially, but also ensures that the contact slope 4 always maintains a precise fit with the mating slope 7 of the slider 6, avoiding uneven radial force transmission caused by the offset of the side pressure block, thereby ensuring the consistency of the synchronous action of the two sliders and improving the power conversion efficiency and molding accuracy.

[0030] The preferred slide 5 is provided with a guide rail 13, the slider 6 is slidably installed on the guide rail 13, the fixed seat 1 is provided with a slide opening 14, and the slider 6 is fixedly installed with a guide rod 15, which is located in the slide opening 14.

[0031] In this implementation, the guide rail 13 and the slide rail 5 can be integrally formed, or they can be detachably installed by welding or screws. The guide rod 15 is installed on the slider 6 by screw connection, and the slide opening 14 limits the guide rod 15. The purpose of both is to limit the movement of the slider 6. In this double limiting structure, the guide rail 13 mainly ensures the radial movement accuracy of the slider 6 and limits its vertical and horizontal offset. The guide rod 15 and the slide opening 14 work together to limit the circumferential rotation of the slider 6. The two work together to ensure that the slider 6 can only make a smooth linear movement in the radial direction, effectively avoiding tilting or slippage when the slider moves. This ensures that the contact position and pressure between the tapered flange 8 and the handle blank are always consistent, greatly improving the dimensional accuracy and appearance consistency of the product molding and reducing the scrap rate.

[0032] Preferably, the end of the abutment 9 is provided with a rivet hole 16.

[0033] In this implementation case, the rivet hole 16 is a through-hole design, which can be adapted to various types of anchoring fixtures such as bolt connection and quick-release type. For example, the installation of the elastic positioning pin fixture can realize the pre-positioning and clamping of the handle blank, the installation of the riveting punch fixture can complete the riveting of the accessories simultaneously after the necking and flanging forming, and the installation of the pressure sensor fixture can monitor the contact pressure of the blank in real time and feed it back to the control system. In addition, the rivet hole 16 can be expanded into multiple specifications according to actual needs, such as matching the positioning pin hole, keyway, etc., to further improve the adaptability of the fixture. The flexible switching of the fixture is realized through multiple sets of standardized threaded rivet holes. The implementation method is simple and highly expandable, enabling the mechanism to break through the single necking and flanging function and integrate multiple auxiliary processes such as pre-positioning, clamping, riveting, and pressure detection. No additional special equipment is required, which effectively shortens the production process, reduces equipment investment costs, and improves the integration and automation adaptability of the production line, adapting to the needs of multi-process integrated production.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A handle tapering and flanging mechanism, comprising a fixed base (1), characterized in that: The fixed base (1) has a movable block (2) slidably installed inside. The movable block (2) has side pressure blocks (3) fixedly installed at both ends. The ends of the two side pressure blocks (3) are provided with abutting slopes (4), and the two abutting slopes (4) are arranged inwards relative to each other. The fixed base (1) is symmetrically provided with two slides (5), and each of the two slides (5) is slidably mounted with a slider (6). The slider (6) is provided with a mating slope (7) that matches the angle of the contact slope (4), and the other end of the slider (6) is provided with a narrowing flange arc (8). The movable block (2) is equipped with a stop rod (9), which is rectangular and located in the middle of the two slides (5). A hydraulic cylinder (10) is installed at the power end of the movable block (2).

2. The handle tapering and flanging mechanism according to claim 1, characterized in that: The fixed base (1) is provided with a limiting port (11), and the moving block (2) is fixedly installed with a limiting rod (12) corresponding to the position of the limiting port (11).

3. The handle tapering and flanging mechanism according to claim 1, characterized in that: Both sides of the side pressure block (3) are in sliding contact with the fixed base (1).

4. The handle tapering and flanging mechanism according to claim 1, characterized in that: The slide (5) is provided with a guide rail (13), the slider (6) is slidably installed on the guide rail (13), the fixed seat (1) is provided with a sliding opening (14), the slider (6) is fixedly installed with a guide rod (15), and the guide rod (15) is located in the sliding opening (14).

5. The handle tapering and flanging mechanism according to claim 1, characterized in that: The end of the abutment (9) is provided with a rivet hole (16).

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