Tool for improving mounting efficiency of piston

Abstract

The utility model discloses a tool for improving installation efficiency of a piston, which comprises the piston, a wear-resistant insert ring, an outer mold wrapped on the outer wall of the piston and a supporting seat supported on the piston, a plurality of ejector blocks are uniformly distributed on the outer mold by taking a circle point as an axis, and the ejector blocks are arranged at equal intervals. The supporting seat is provided with a bearing part corresponding to the top block, the bearing part is provided with a limiting part, the wear-resistant insert ring is arranged on the bearing part and sleeves the outer wall of the piston, and when the supporting seat is propped against the end face of the outer mold, the limiting part is propped against the top block, and the wear-resistant insert ring is propped against the top block. The wear-resistant insert ring is directly placed on the bearing part, the time for security and protection of the wear-resistant insert ring is shortened, after the limiting part abuts against the ejector block, the next gravity casting procedure can be carried out, and therefore the difficulty for workers to master the installation mode is lowered, and the work efficiency is improved. The product has the advantages of improving the installation efficiency, being convenient to process, reducing the rejection rate and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of piston wear-resistant insert installation equipment, and particularly relates to a tool for improving the installation efficiency of a piston. Background Art

[0002] Gravity casting is a process in which molten metal is poured into a mold under the action of the earth's gravity, and is widely used in the forming of metal materials. In this process, the use of wear-resistant inserts is particularly important, especially in the manufacture of aluminum alloy pistons. The role of the wear-resistant insert is to improve the bonding strength between the insert and the aluminum piston matrix, thereby enhancing the reliability and life of the piston.

[0003] The selection of the installation method of the upper core-pulling wear-resistant insert in gravity casting is very important, which not only affects the production efficiency, but also affects the bonding strength between the wear-resistant insert and the piston body. However, for products with complex piston head shapes, the traditional slot-type installation method not only has low efficiency, but also affects the bonding strength of the insert due to the long placement time of the insert ring, and there are many casting rejects.

[0004] According to the attached Figure 1 As shown, the traditional positioning method of the wear-resistant insert is to make four card slots at the corresponding positions of the piston outer mold. The relative positions and absolute dimensions of the four card slots need to be very accurate. Because the relative dimensions of this type of piston to the insert are required to be strict, the relative position tolerance is generally about 0.1 mm. Therefore, the processing requirement that the four card slots need to be at the same height position requires careful matching. Moreover, during the later use process, the card slots will affect the position of the insert due to deformation and aluminum padding to different degrees, causing adjustment difficulties in machining, and even batch scrapping during the manufacturing process. Therefore, the applicant has made a beneficial design and found a method to solve the above problems. The technical solution to be introduced below was generated under this background. Summary of the Invention

[0005] The purpose of the utility model is to overcome the deficiencies in the outer mold processing design proposed in the above background art, and provides a product with improved installation efficiency, easy processing, and reduced scrap rate.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A tool for improving the installation efficiency of a piston, comprising a piston, a wear-resistant insert, an outer mold wrapped around the outer wall of the piston, and a support seat carried on the piston. The outer mold is evenly distributed with a plurality of equally spaced top blocks centered on a dot. The support seat is provided with a bearing part corresponding to the top blocks. The bearing part is provided with a limiting part. The wear-resistant insert is arranged on the bearing part. The wear-resistant insert is sleeved on the outer wall of the piston. When the support seat abuts against the end face of the outer mold, the limiting part abuts against the top block, and the wear-resistant insert abuts against the top block.

[0008] Preferably, one end of the outer mold is provided with a first counterbore, and the end face of the first counterbore is provided with a second counterbore.

[0009] Preferably, the top block is arranged on the end face of the first counterbore.

[0010] Preferably, the support seat abuts against the end face of the second counterbore, and the support seat is provided with a groove corresponding to the end face of the piston.

[0011] Preferably, the inner wall of the limiting part is provided with a contact part that fits the wear-resistant insert ring.

[0012] Advantageous effects:

[0013] Compared with the prior art, the advantageous effects of the present utility model are as follows:

[0014] (1) In the present utility model, there is no need to install the wear-resistant insert ring in advance, and the time required for placing the wear-resistant insert ring in this product is greatly reduced, reducing the thickening of the aluminum oxide film on the surface of the wear-resistant insert ring, and ensuring the bonding strength between the wear-resistant insert ring and the piston; when the limiting part abuts against the top block, it means that the wear-resistant insert ring is in place, and the next step of the gravity casting process can be carried out, reducing the difficulty for workers to master the installation method. Moreover, since the contact area between the bearing part and the wear-resistant insert ring is small, the local cooling of the wear-resistant insert ring is reduced, making the combination strength between the wear-resistant insert ring and the piston higher, and the product has the advantage of improving the installation efficiency.

[0015] (2) In the present utility model, since the surface of the top block of the outer mold is flat and placed on the end face of the first counterbore, the outer mold can be made by casting, and during the machining process, it is only necessary to ensure that the top blocks are on the same horizontal plane, greatly reducing the processing difficulty; similarly, since the bearing part and the limiting part are not on the same plane, during the machining process, it is only necessary to ensure that the bearing part and the limiting part are on the same horizontal plane to ensure the stability, the same height and the consistency of the wear-resistant insert ring, and the wear-resistant insert ring is not easily deformed during placement, overcoming the problems in the design proposed in the background art, and the product has the advantages of being easy to process and reducing the scrap rate. Description of the drawings

[0016] Figure 1 is an exploded view of the traditional tooling;

[0017] Figure 2 is a top view of the internal structure of the housing of a tooling for improving the installation efficiency of a piston according to the present utility model;

[0018] Figure 3 is a side view of a tooling for improving the installation efficiency of a piston according to the present utility model;

[0019] Figure 4 is an exploded view of a tooling for improving the installation efficiency of a piston according to the present utility model;

[0020] The corresponding relationship between the reference signs in the figure and the component names is as follows:

[0021] Reference signs: 1, piston; 2, wear-resistant insert ring; 3, outer mold; 4, support seat; 31, top block; 32, first counterbore; 33, second counterbore; 41, bearing part; 42, limiting part; 43, groove; 421, abutting part. Specific embodiments

[0022] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0024] In the embodiments of the present utility model, "and / or" only describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0025] Reference example Figures 2 to 4, A tooling for improving the installation efficiency of a piston, including a piston 1, a wear-resistant insert ring 2, an outer mold 3 wrapped around the outer wall of the piston 1, and a support seat 4 carried on the piston 1. The outer mold 3 is evenly distributed with a number of equally spaced top blocks 31 centered on a dot. The support seat 4 is provided with a bearing part 41 corresponding to the top block 31. The bearing part 41 is provided with a limiting part 42. The wear-resistant insert ring 2 is arranged in the bearing part 41. The wear-resistant insert ring 2 is sleeved on the outer wall of the piston 1. When the support seat 4 abuts against the end face of the outer mold 3, the limiting part 42 abuts against the top block 31, and the wear-resistant insert ring 2 abuts against the top block 31. By means of the open bearing part 41, the time required for placing the wear-resistant insert ring 2 is reduced, the thickening of the aluminum oxide film on the surface of the wear-resistant insert ring 2 is reduced, and the bonding strength between the wear-resistant insert ring 2 and the piston 1 is ensured; and when the limiting part 42 abuts against the top block 31, it means that the wear-resistant insert ring 2 is in place, and the next gravity casting process can be carried out, reducing the difficulty for the staff to master the installation method. Moreover, since the contact area between the bearing part 41 and the wear-resistant insert ring 2 is small, the local cooling of the wear-resistant insert ring 2 is reduced, and the bonding strength between the wear-resistant insert ring 2 and the piston 1 is higher;

[0026] It is worth mentioning that one end of the outer mold 3 is provided with a first counterbore 32, and the end face of the first counterbore 32 is provided with a second counterbore 33. Since the surface of the top block 31 of the outer mold 3 is flat and placed on the end face of the first counterbore 32, therefore, the outer mold 3 can be made by casting, and during the machining process, it is only necessary to ensure that the top blocks 31 are on the same horizontal plane, greatly reducing the machining difficulty; similarly, since the bearing part 41 and the limiting part 42 are not on the same plane, during the machining process, it is only necessary to ensure that the bearing part 41 and the limiting part 42 are on the same horizontal plane to ensure the stability, the same height and the consistency of the wear-resistant insert ring 2, and it is not easy to deform when placing the wear-resistant insert ring 2;

[0027] It is worth mentioning that the top block 31 is arranged on the end face of the first counterbore 32. When the limiting part 42 abuts against the top block 31, a space for accommodating the wear-resistant insert ring 2 is formed between the bearing part 41 and the top block 31, which is convenient for the green liquor to generate a high-speed scouring force on the wear-resistant insert ring 2 during pouring, reducing the ring-edge casting slag waste products and reducing the generation of scrap products;

[0028] It is worth mentioning that the support seat 4 abuts against the end face of the second counterbore 33. The support seat 4 is provided with a groove 43 corresponding to the end face of the piston 1. The second counterbore 33 also plays a role in limiting the distance of the limiting part 42 entering the first counterbore 32. The groove 43 adapts to the complex shape of the end face of the piston 1, so that the piston 1 is stably placed on the support seat 4;

[0029] It is worth mentioning that the inner wall of the limiting part 42 is provided with a contact part 421 that fits the wear-resistant insert ring 2. The limiting part 42 restricts the specific placement position of the wear-resistant insert ring 2, further reducing the time required for placing the insert ring. Moreover, the open bearing part 41 also reduces the later maintenance cost and provides convenience for later maintenance. The contact part 421 makes the wear-resistant insert ring 2, the support seat 4, and the piston 1 on the same center line.

[0030] Through the above design scheme, the product can achieve the advantages of improving the installation efficiency, facilitating processing, and reducing the scrap rate.

[0031] The above content further elaborates on the present utility model in combination with specific implementation manners. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope determined by the claims submitted for the present utility model.

Claims

1. A tooling for improving the installation efficiency of a piston, comprising a piston (1), a wear-resistant insert (2), an outer mold (3) wrapped around the outer wall of the piston (1), and a support seat (4) supported by the piston (1), characterized in that: The outer mold (3) is evenly distributed with a plurality of top blocks (31) at equal intervals with a dot as the axis, the support seat (4) is provided with a bearing portion (41) corresponding to the top block (31), the bearing portion (41) is provided with a limiting portion (42), the wear-resistant insert ring (2) is arranged on the bearing portion (41), and the wear-resistant insert ring (2) is sleeved on the outer wall of the piston (1), and when the support seat (4) abuts against the end surface of the outer mold (3), the limiting portion (42) abuts against the top block (31), and the wear-resistant insert ring (2) abuts against the top block (31).

2. The tooling for improving the installation efficiency of a piston according to claim 1, characterized in that: A first countersunk hole (32) is provided at one end of the outer mold (3), and a second countersunk hole (33) is provided on the end surface of the first countersunk hole (32).

3. The tooling for improving the installation efficiency of a piston according to claim 2, characterized in that: The top block (31) is arranged on the end surface of the first countersunk hole (32).

4. The tooling for improving the installation efficiency of a piston according to claim 3 is characterized in that: The support seat (4) abuts against the end surface of the second counterbore (33), and the support seat (4) is provided with a groove (43) corresponding to the end surface of the piston (1).

5. The tooling for improving the installation efficiency of a piston according to any one of claims 2 to 4, characterized in that: The inner wall of the limiting portion (42) is provided with a resisting portion (421) that fits the wear-resistant insert ring (2).

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