Protective jig in freezing and edge-removing process of special product

Abstract

The utility model relates to a protection jig for a special product in the freezing and edge removing process, and belongs to the technical field of rubber product equipment. The device comprises a core rod and a fixing mechanism, the core rod is used for penetrating a plurality of products together, and the fixing mechanism is used for clamping and fixing the plurality of products. The utility model aims to protect a sealing line of a product from being impacted and damaged by plastic particles and ensure that the sealing performance of the product is not influenced in the process of freezing and edge dismounting.

Description

TECHNICAL FIELD

[0001] The utility model relates to special product frozen edge removing process protection fixture belongs to rubber products equipment technical field. BACKGROUND

[0002] In the production process of rubber products, especially in the production of pneumatic seal and other products that require high sealing performance, the treatment of the surface sealing line and the parting surface of the product is crucial. The existing rubber products, especially the sealing end face thereof, are designed with a whole circle of triangular micro sealing lines to ensure good sealing effect. However, the parting surface burr of the product surface is required to be zero, which puts high requirements on the production process.

[0003] The conventional burr treatment method usually adopts manual edge removing, which can effectively remove the burr, but the efficiency is low and it is difficult to achieve 0 burr requirement. The use of frozen edge removing technology to treat the burr is an alternative solution, but when using-50℃ liquid nitrogen cooling, the sealing line is easily broken by plastic particles, which greatly affects the sealing performance of the product and cannot meet the requirements of high-precision sealing. SUMMARY

[0004] The utility model discloses a special product frozen edge removing process protection fixture, which aims to protect the product sealing line from being damaged by plastic particles during the process of frozen edge removing and burr treatment, and ensure that the sealing performance of the product is not affected.

[0005] The utility model discloses a special product frozen edge removing process protection fixture, which includes a core rod and a fixing mechanism, the core rod is used for wearing together several products, and the fixing mechanism is used for clamping and fixing the several products.

[0006] Further, the fixing mechanism includes a gasket and a nut, the top end of the core rod is provided with a thread, the bottom end of the core rod is provided with a step, and the gasket is respectively installed at both ends of the core rod and fixed by screwing the nut.

[0007] Further, the material of the core rod is polytetrafluoroethylene.

[0008] Further, the gasket and the nut are both made of metal material.

[0009] Further, the top end of the core rod is conical.

[0010] The utility model discloses a special product frozen edge removing process protection fixture, which has the beneficial effects that the fixture effectively protects the micro sealing line on the surface of the product from being impacted by plastic particles during the frozen treatment process, maintains the integrity of the sealing performance of the product, and improves the efficiency of frozen edge removing through batch processing. BRIEF DESCRIPTION OF DRAWINGS

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Fig. 1 This is a schematic diagram of the product before it is frozen and the edges are removed.

[0013] Fig. 2 This is a schematic diagram of the products connected in series before freezing treatment according to this utility model;

[0014] Fig. 3 This is a schematic diagram of the product after processing.

[0015] In the diagram: 1. Mandrel; 2. Washer; 3. Nut; 4. Product; 5. Sealing line; 6. Burr. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] To further understand the invention of this utility model, the following detailed description of the specific embodiments is provided.

[0018] Example 1: As Figs. 1-3 As shown, this embodiment provides a protective fixture for the freezing and edge-removing process of special products, including a mandrel 1 and a fixing mechanism. The mandrel 1 is used to thread several products 4 together, and the fixing mechanism is used to clamp and fix the several products 4. The fixing mechanism includes washers 2 and nuts 3. The top of the mandrel 1 has threads, and the bottom of the mandrel 1 has a step. Washers 2 are respectively installed at both ends of the mandrel 1 and are tightened and fixed by nuts 3. The mandrel 1 is made of polytetrafluoroethylene, that is, PTFE mandrel 1. The top of the PTFE mandrel 1 is conical to facilitate the insertion of products 4. Both the washers 2 and nuts 3 are made of metal.

[0019] The length of the PTFE core rod 1 is processed according to different thickness dimensions of the product 4; in the embodiment, one PTFE core rod 1 can pass through 10 products 4; before the product 4 is frozen and the edge is removed, one gasket 2 is installed at the bottom end step of the PTFE core rod 1, 10 products 4 are sequentially installed on the PTFE core rod 1, after the product 4 is passed into the PTFE core rod 1, the second gasket 2 is passed in, finally, the nut 3 is screwed at the top end of the PTFE core rod 1, and the two gaskets 2 tightly fix all the products 4. The adjacent product 4 sealing lines 5 are slightly deformed by mutual extrusion, and are temporarily hidden, and the product 4 forms the entire sealing line 5 protection.

[0020] The product 4 is sequentially passed through at least 20 sets of jigs, and at least 200 products 4 are ensured to be put into the product 4 at one time. Then, the frozen edge removing equipment is started, and the 20 sets of jigs are put into the equipment rotating cage. The product 4 is rapidly cooled to-50 DEG C under the action of the liquid nitrogen, at this time, the burr 6 on the parting line of the outer edge of the product 4 becomes glassy under the action of low temperature, and rotates irregularly in the rotating cage. At the same time, the plastic particles stored in the equipment are sprayed to the product 4 in the rotating cage under the action of air pressure. Under the impact of the plastic particles, the glassy burr is broken and falls off. After 5 minutes of circulation treatment, the equipment stops, and the liquid nitrogen and the plastic particles also stop flowing and spraying. The rotating cage is opened to take out each PTFE core rod 1, the nut 3 is unscrewed, the gasket 2 is taken out, and the product 4 is taken out. The product 4 is washed and placed for half an hour at room temperature, so as to restore the original elastic state of the rubber product 4. On the premise that the sealing line 5 of the product 4 is protected from the impact of the plastic particles on the product 4, the surface burr removal purpose is achieved.

[0021] At the same time, another batch of PTFE core rods 1 starts to repeat the above operation to complete the frozen edge removing treatment of the next batch of products 4, and the circulation is repeated. The production efficiency is improved, and the sealing line 5 of the product 4 is not damaged by the impact of the plastic particles in the frozen edge removing process. The surface burr of the product 4 is removed while the sealing performance of the product 4 is perfectly maintained.

[0022] The utility model discloses a PTFE core rod 1 is worn to the product 4 that waits for frozen edge removing treatment one by one, makes every product 4 end face mutual close adhesion, with metal gasket 2 clamping product 4, finally with nut 3 realizes compression fixed, all product 4 sealing line 5 position mutual back to back forms the protection of integrity, then multiple PTFE core rods 1 are together put into frozen edge removing equipment, utilize plastic particle in-50 DEG C's nearly glassy state, full rotation impact will product 4 surface parting face burr 6 polish clean. After completion, take out product 4 and place in normal temperature and wash, along with the temperature recovery, product 4 restores the elasticity of rubber should, realize the processing work of surface burr. The product 4 is connected through the jig, and the product 4 is slightly compressed, the surface of the product 4 is effectively protected from the impact of the plastic particles during the frozen treatment, the integrity of the sealing performance of the product 4 is maintained, and the efficiency of the frozen edge removing is improved.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A special product freeze-off process protection jig, characterized in that, The utility model relates to a kind of core rod and fixing mechanism, the core rod (1) is used to wear together several products (4), and fixing mechanism is used to clamp and fix several products (4).

2. The special product freeze-off process protection jig of claim 1, wherein, The fixing mechanism includes gasket (2) and nut (3), the top end of core rod (1) is with thread, the bottom end of core rod (1) is with step, gasket (2) is respectively installed at the both ends of core rod (1), and is fixed by nut (3) screwing.

3. The special product freeze-off process protection jig of claim 1, wherein, The material of core rod (1) is polytetrafluoroethylene.

4. The special product freeze-off process protection jig of claim 1, wherein, Gasket (2) and nut (3) are metal materials.

5. The special product freeze-off process protection jig of claim 1, wherein, The top end of core rod (1) is conical.

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