Novel O-shaped ring trimming tool

Abstract

The novel O-shaped ring trimming tool comprises a base, a stand column, a supporting roller and a supporting arm, the stand column is vertically and fixedly installed on the base, an installation hole is formed in the top of the stand column, a through hole is formed in the upper portion of the supporting roller, a through hole is formed in the upper portion of the supporting arm, and the supporting roller and the supporting arm are connected together in the mode that a first bolt penetrates through the through holes. One end of the supporting arm is provided with a supporting roller which is installed on the upper portion of the stand column through a first bolt, the supporting roller can rotate around the stand column with the connecting point of the supporting roller and the stand column as the center after being connected through the first bolt, and the other end of the supporting arm is provided with a sliding block which is installed on the supporting arm through a second bolt and can freely rotate with the connecting point of the sliding block and the supporting arm as the center. By the adoption of the technical scheme, no matter whether the inner diameter of a workpiece is large or small, the workpiece can be hung on the supporting roller or the sliding block, after the O-shaped ring is straightened, a worker only needs to keep the cutter to smoothly and evenly slide along the inner diameter or the outer diameter of the O-shaped ring, and the problem that the O-shaped ring is scraped due to improper operation of the worker is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the field of trimming tools for rubber products, in particular to a novel trimming tool for O-rings. Background Art

[0002] Currently, in the rubber products industry, whether it is compression vulcanization or injection vulcanization, the problem of flash on the product after vulcanization is inevitable. This requires a post-process to remove the flash, also known as trimming. Currently, the three most common trimming methods are: frozen trimming, trimming machine trimming, and manual trimming.

[0003] The principle of cryo-trimming is to use the low-temperature freezing effect of liquid nitrogen to embrittle rubber products, and then use high-speed jetting of polymer particles to impact the burrs of the products, thereby removing the burrs with high efficiency and high precision. However, if cryo-trimming is used to remove burrs on products with larger inner diameters, it may cause agglomeration. Therefore, cryo-trimming is not suitable for O-rings with larger inner diameters.

[0004] The edge stripping machine adopts the centrifugal principle. There is an automatically controlled rotating disc in the cylinder that drives the rubber product to rotate at high speed and continuously collide with it, so that the burrs and the rubber product are separated from each other, thereby achieving the function of removing the burrs. When the edge stripping machine is removing the edges, it will also cause agglomeration due to the large inner diameter of the O-ring. Therefore, it is not suitable for O-rings with larger inner diameters.

[0005] Therefore, for O-rings with larger inner diameters, manual trimming is generally required to remove the flash. Manual trimming, as the name suggests, is the process of manually removing the flash. For rubber with higher hardness, manual trimming requires the use of a blade. This process requires the worker to hold the ring in one hand and the blade in the other, moving the O-ring at a constant speed along the inner and outer diameters. If the trimming speed and trimming angle are uneven, it is very likely to result in incomplete trimming, excessive trimming, and product scrapping, causing a sharp increase in scrap rate and waste. Utility Model Content

[0006] The purpose of the utility model is to provide a novel O-ring trimming tool with a simple structure and easy operation, aiming to solve the problem that when trimming the O-ring, the product is easily scrapped due to improper operation of the worker, resulting in an excessively high scrap rate.

[0007] The technical solution adopted by the utility model is: a new type of O-ring trimming tooling, including a base, a column, a support roller and a support arm, the column is vertically fixedly installed on the base, a mounting hole is provided on the top of the column, a through hole is provided on the upper part of the support roller, and a through hole is provided on the upper part of the support arm. The support roller and the support arm are connected together by a first bolt passing through the through hole and are installed on the upper part of the column by the first bolt. After the support roller is connected by the first bolt, it can rotate around the column with the connection point between the support roller and the column as the center. A slider is provided on the other end of the support arm, and the slider is installed on the support arm by a second bolt, and can rotate freely with the connection point between the slider and the support arm as the center.

[0008] A further technical solution of the present invention is that the slider is cylindrical, and an annular groove is provided on the side wall of the slider, so that workers can hang the O-ring with a large inner diameter on the hanger for trimming operation. The annular groove can prevent the O-ring from falling from the tooling during trimming.

[0009] A further technical solution of the utility model is: the support roller is "J"-shaped, and the O-ring with a smaller inner diameter is hung on the support roller for trimming. The structure of the support roller is convenient for workers to hang the O-ring directly on the support roller, which is easy to operate, not easy to fall off during hanging, and can be flipped and adjusted.

[0010] A further technical solution of the present invention is that a counterweight is arranged on the base to improve the stability of the tooling.

[0011] The beneficial effects of the present invention are as follows: due to the adoption of the above technical solution, a new type of O-ring trimming tool of the present invention can be suspended on a support roller or a slider regardless of whether the inner diameter of the workpiece is large or small. After the O-ring is straightened, the worker only needs to keep the tool moving along the inner diameter or outer diameter of the O-ring at a steady and uniform speed, effectively avoiding the problem of waste O-rings caused by improper operation of the worker, effectively reducing the scrap rate, and being easy to operate, while effectively improving the trimming efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a novel O-ring trimming tool described in the utility model;

[0013] Figure 2 The utility model is a side view structural schematic diagram of a novel O-ring trimming tool. DETAILED DESCRIPTION

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Example:

[0016] like Figure 1 、 2A new type of O-ring trimming tool shown in the figure includes a base 1, a column 2, a support roller 3 and a support arm 4. The column 2 is vertically fixedly installed on the base 1, and a mounting hole is provided on the top of the column. A through hole is provided on the upper part of the support roller 3, and a through hole is provided on the upper part of the support arm 4. The support roller and the support arm are connected together by a first bolt 5 passing through the through hole and are installed on the upper part of the column 2 through the first bolt 5. After the support roller 3 is connected by the first bolt, it can rotate around the column with the connection point between the support roller 3 and the column 2 as the center. A slider 6 is provided on the other end of the support arm. The slider is installed on the support arm by a second bolt 7 and can rotate freely with the connection point between the slider 6 and the support arm 4 as the center.

[0017] Furthermore, the slider 6 is cylindrical, and an annular groove 61 is provided on the side wall of the slider.

[0018] Furthermore, the support roller 3 is in a “J” shape.

[0019] Furthermore, a counterweight 8 is disposed on the base 1 .

[0020] When using this tool, the O-ring is suspended on either the support roller or the slider, depending on its inner diameter. Smaller O-rings should be suspended on the support roller, while larger O-rings should be suspended on the slider. After the O-ring is suspended, the worker straightens the ring with one hand to hold it still, then uses the other hand to push the knife along the inner or outer diameter of the O-ring at a constant speed. After trimming one side, the worker pulls the O-ring with one hand to swap the remaining untrimmed area with the trimmed area, and then repeats the above steps.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new type of O-ring trimming tool, characterized by: The cam is provided with a plurality of support arms and a plurality of support arms, and the plurality of support arms are connected to each other by a plurality of bolts passing through the plurality of bolts. The plurality of support arms are connected to each other by a plurality of bolts passing through the plurality of bolts. The plurality of support arms are connected to each other by a plurality of bolts passing through the plurality of bolts. The plurality of support arms are connected to each other by a plurality of bolts passing through the plurality of bolts. The plurality of support arms are connected to each other by a plurality of bolts passing through the plurality of bolts. The plurality of support arms are connected to each other by a plurality of bolts passing through the plurality of bolts.

2. The novel O-ring trimming tool according to claim 1, characterized in that: The slider is cylindrical, and an annular groove is provided on the side wall of the slider.

3. The novel O-ring trimming tool according to claim 1, characterized in that: The support roller is in a "J" shape.

4. The novel O-ring trimming tool according to claim 1 is characterized in that: A counterweight block is arranged on the base.

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