Cutting structure rubber pipe sleeve cap die

Abstract

The utility model relates to the technical field of die processing, and discloses a cutting structure rubber tube sleeve cap die which comprises a core rod, an upper rubber sleeve is sleeved outside the top end of one side of the core rod, a lower rubber sleeve is sleeved in the middle of the core rod, a limiting ring is sleeved on one side of the lower rubber sleeve, and a die inserting head is arranged at the bottom end of the core rod. During forming, a pipe blank is sleeved with the core rod, the limiting ring at the lower end of the mold limits the length of the pipe blank, the sleeve caps at the upper end and the lower end of the mold limit the outer diameter of the pipe blank, the wall thickness of a product is guaranteed, and the problems that due to forming of a traditional mold without a sleeve cap, the wall thickness is not uniform, and the product quality is poor can be solved. And the inner diameter of a product is too large due to a special-shaped mold structure. Meanwhile, compared with a cutting-free cap sleeving mold, the requirements for manpower, equipment, pipe blank precision and the like are reduced, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a mold for cutting structural rubber hose caps. Background Technology

[0002] Rubber hoses are widely used in various industrial sectors, especially in the automotive industry. Current rubber hose processing methods primarily employ mold-based vulcanization molding.

[0003] There are two commonly used methods: Method 1: Using a capless cutting structure, to ensure the flatness of both ends of the rubber tube and the appropriate assembly length, a 25mm-35mm allowance is often removed from both ends of the rubber tube by cutting. This processing method has many problems:

[0004] 1. Cost and resource issues: It significantly increased processing costs, and the excessively long material head caused a waste of resources.

[0005] 2. Product quality issues:

[0006] ① The inner and outer diameters of the hose are out of tolerance, and the length is also out of tolerance:

[0007] ②The wall thickness of the hose is uneven;

[0008] Method 2: ① Adopt a cut-free cap structure. In order to ensure the flatness of both ends of the rubber tube, the uniformity of the wall thickness and the appropriate assembly length, it is necessary to strictly control the positioning and processing accuracy of the mold during mold processing. The mold processing is difficult and the manufacturing cost is high.

[0009] ②During product manufacturing, it is necessary to strictly control the extrusion precision and cutting of semi-finished tube blanks, which places high demands on equipment.

[0010] ③ When vulcanizing the product, the worker needs to have a lot of experience in this process. If the experience is insufficient, it is easy to cause the product to be not properly fitted, the product end to be tilted, the product to be short, or the end to be curled.

[0011] ④ The difficulty in putting on the hat and cap sets increases labor intensity and reduces production efficiency.

[0012] To address this, we propose a die for cutting structural hose caps. Utility Model Content

[0013] To solve the above-mentioned technical problems, this utility model provides a cutting mold for structural rubber hose caps, thereby addressing the issues raised in the background section.

[0014] To achieve the above objectives, this utility model provides the following technical solution: a cutting mold for a rubber hose cap, comprising a mandrel, an upper rubber sleeve being fitted on the outer side of one top edge of the mandrel, a lower rubber sleeve being fitted on the middle part of the mandrel, a limiting ring being fitted on one side of the lower rubber sleeve, and a mold insertion head being provided at the bottom end of the mandrel.

[0015] Preferably, the mandrel is S-shaped, and the bottom end of the limiting ring has an exhaust hole.

[0016] Preferably, the upper rubber sleeve and the lower rubber sleeve are symmetrically arranged, and the lower rubber sleeve is a hollow ring structure, the upper rubber sleeve is a hollow structure with one side without a face, and the limiting ring is sleeved and fixed to one side of the lower rubber sleeve.

[0017] Preferably, both the upper and lower rubber sleeves are connected and fixed by a sleeve and an outer expansion ring fixed to the outside of the sleeve. One side of the sleeve in the upper rubber sleeve is fixed with a bottom structure, and the limiting ring includes a bottom ring and a top ring disposed on the bottom ring. The bottom ring is disposed on the outside of the sleeve.

[0018] Preferably, the outer diameter of the top ring is adapted to the inner diameter of the sleeve, and the outer diameter of the bottom ring is adapted to the outer diameter of the sleeve.

[0019] Preferably, the distance between the end of the mandrel and the outer wall of the limiting ring is adapted to the outer diameter of the mold insertion head, and the mold insertion head has a square structure.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This device is designed as a cap-cutting mold, with a cutting allowance controllable to 10mm. The cap-cutting structure of the mold ensures uniform product wall thickness, and no positioning is required at the end of the mold. The upper and lower caps are made of high-temperature resistant non-metallic rubber. A metal limiting ring with built-in venting holes is used for limiting the lower cap of the mandrel. During molding, the tube blank is inserted into the mandrel. The limiting ring at the lower end of the mold limits the length of the tube blank, while the caps at both ends limit the outer diameter of the tube blank, ensuring product wall thickness. This solves the problems of uneven wall thickness caused by molding with traditional capless molds and excessively large inner diameters due to irregular mold structures. Furthermore, compared to capless molds, it reduces the requirements for manual labor, equipment, and tube blank precision, while improving product quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a side view of the structure of this utility model;

[0024] Figure 3This is a schematic cross-sectional view of the structure of this utility model;

[0025] Figure 4 This is an exploded view of the limiting ring and lower rubber sleeve structure of this utility model.

[0026] Explanation of key symbols:

[0027] 1. Mold insertion head; 2. Limiting ring; 21. Bottom ring; 22. Top ring; 3. Lower rubber sleeve; 31. Sleeve; 32. Outer expansion ring; 4. Mandrel; 5. Upper rubber sleeve. Detailed Implementation

[0028] Please see Figures 1 to 4 In the embodiments of this utility model;

[0029] Example 1: A die for cutting a hose cap includes a mandrel 4. An upper rubber sleeve 5 is fitted on the top of one side of the mandrel 4, and a lower rubber sleeve 3 is fitted on the middle of the mandrel 4. A limiting ring 2 is fitted on one side of the lower rubber sleeve 3, and a die insertion head 1 is provided at the bottom of the mandrel 4. The mandrel 4 is S-shaped, and an exhaust hole is provided at the bottom of the limiting ring 2. The upper rubber sleeve 5 and the lower rubber sleeve 3 are symmetrically arranged, and the lower rubber sleeve 3 is a hollow ring structure. The upper rubber sleeve 5 is a hollow structure with one side without a facet. The limiting ring 2 is fitted and fixed to one side of the lower rubber sleeve 3. The cutting allowance can be controlled within 10mm. At the same time, the die for cutting the cap can ensure the uniformity of the product wall thickness, and no positioning is required at the end of the die. The upper and lower end caps are made of non-metallic high-temperature resistant rubber. The lower end cap of the mandrel is limited by a metal limiting ring with its own vent hole. During molding, the tube blank is inserted into the mandrel, and the lower end limiting ring of the mold limits the length of the tube blank.

[0030] Example 2: Refer to the attached instruction manual Figure 3-4 It can be seen that both the upper rubber sleeve 5 and the lower rubber sleeve 3 are connected and fixed by a sleeve 31 and an outer expansion ring 32 fixed to the outside of the sleeve 31. A bottom structure is fixed to one side of the sleeve 31 in the upper rubber sleeve 5. The limiting ring 2 includes a bottom ring 21 and a top ring 22 disposed on the bottom ring 21. The bottom ring 21 is disposed on the outside of the sleeve 31. The outer diameter of the top ring 22 matches the inner diameter of the sleeve 31, and the outer diameter of the bottom ring 21 matches the outer diameter of the sleeve 31. The distance between the end of the mandrel 4 and the outer wall of the limiting ring 2 matches the outer diameter of the mold insertion head 1, and the mold insertion head 1 has a square structure. The caps at both ends limit the outer diameter of the tube blank, ensuring the product wall thickness. This solves the problems of uneven wall thickness caused by molding in traditional capless molds and the problem of excessively large inner diameter of the product due to irregular mold structure. At the same time, compared with capless molds, it reduces the requirements for manual labor, equipment, and tube blank precision, while improving product quality.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cutting structure hose sleeve capping mold characterized by, The utility model provides a core stick (4) is provided with upper rubber sleeve (5) on one side top end, and the middle part is provided with lower rubber sleeve (3), and one side of lower rubber sleeve (3) is provided with limiting ring (2), and the bottom end of core stick (4) is provided with mould insert head (1).

2. A cutting structural adhesive tube cap mold as defined in claim 1, wherein: The core stick (4) is S-shaped, and the bottom end of the limiting ring (2) is provided with an exhaust hole.

3. A cutting structural adhesive tube cap mold as defined in claim 1, wherein: The upper rubber sleeve (5) and the lower rubber sleeve (3) are symmetrically arranged, and the lower rubber sleeve (3) is a hollow ring structure, the upper rubber sleeve (5) is a hollow structure without a side, and the limiting ring (2) is sleeved and fixed with one side of the lower rubber sleeve (3).

4. A cutting structural adhesive tube capping mold as defined in claim 3, wherein: The upper rubber sleeve (5) and the lower rubber sleeve (3) are connected and fixed by a sleeve (31) and an expanding ring (32) fixed outside the sleeve (31), one side of the sleeve (31) in the upper rubber sleeve (5) is fixed with a cylinder bottom structure, and the limiting ring (2) comprises a bottom ring (21) and a top ring (22) arranged on the bottom ring (21), and the bottom ring (21) is arranged outside the sleeve (31).

5. A cutting structural adhesive tube capping mold as defined in claim 4, wherein: The outer diameter of the top ring (22) is matched with the inner diameter of the sleeve (31), and the outer diameter of the bottom ring (21) is matched with the outer diameter of the sleeve (31).

6. A cutting structural adhesive tube capping mold as defined in claim 5, wherein: The distance between the end of the core stick (4) and the outer wall of the limiting ring (2) is matched with the outer diameter of the mould insert head (1), and the mould insert head (1) is a square structure.

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