Mold for saddle production

Abstract

The utility model discloses a die for saddle production, and relates to the technical field of saddle production. The die comprises a lower die body and an upper die body, the upper die body and the lower die body are vertically aligned, a female die part is arranged on the top face of the lower die body, a first male die part is arranged on the inner side of the female die part, two containing grooves are symmetrically formed in the inner side of the female die part, and movable die bodies are placed in the containing grooves. Convex columns are symmetrically arranged on the two side faces of the movable die body, a liquid inlet groove communicated with the female die part is formed in the position, on the outer side of the female die part, of the top face of the lower die body, and the bottom face of the liquid inlet groove is arranged to be a corrugated face. The saddle body produced by the mold is good in overall precision, the labor intensity of subsequent machining is reduced, meanwhile, the damage to the mold in the pouring process can be reduced, and the production quality of the saddle body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of saddle production, in particular to a mold for saddle production. Background Art

[0002] The saddle, also known as the drawbar, has the function of automatically engaging the semi-trailer's draw pin through a locking mechanism, and is a device that can transmit horizontal and vertical forces between the tractor and the semi-trailer. It is a very critical and important component; as an important assembly component connecting the tractor and the semi-trailer on the semi-trailer, the drawbar not only plays the role of towing the semi-trailer and bearing the load of the semi-trailer, but also should be able to withstand the movement conditions of the tractor starting, accelerating, decelerating, turning, braking, and the impact when the semi-trailer is hooked;

[0003] The existing saddle production methods are mainly mold casting and hydraulic stamping. After the hydraulic stamping is completed, various components need to be welded to the shape by welding. The overall operation is complicated and the dimensional accuracy is low. Therefore, most of the existing saddles are still produced by casting. However, the existing saddle casting production method still has the following shortcomings:

[0004] 1. In the overall structure of the saddle, there is a connecting plate connected to the semi-trailer through a bolt, and a socket for the bolt is provided on the connecting plate. However, when the saddle is produced by casting, the casting of the saddle causes deformation, which results in a low degree of fit between the casting socket, the connecting plate and the bolt, requiring the staff to reprocess, which increases the labor intensity of the staff;

[0005] 2. During the pouring process of the saddle, there will be a certain impact pressure after the pouring liquid enters the mold. During the pouring process, the staff often pours with uneven force, which leads to certain impact marks on the surface of the saddle. At the same time, the saddle may also cause damage to the mold during the pouring process, thus affecting the production quality of the saddle;

[0006] Therefore, it is necessary to improve the prior art to solve the above-mentioned technical problems. Utility Model Content

[0007] The problem to be solved by the utility model is to provide a saddle production mold with good casting accuracy and good cast saddle quality, so as to improve the stability of the cast saddle quality.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model discloses a mold for producing a saddle, comprising a lower mold body and an upper mold body, wherein the upper mold body and the lower mold body are arranged in an up-and-down manner, a concave mold part is arranged on the top surface of the lower mold body, and a first convex mold part is arranged on the inner side of the concave mold part, two placement grooves are symmetrically arranged on the inner side of the concave mold part, and a movable mold body is placed in the placement grooves, convex columns are symmetrically arranged on both side surfaces of the movable mold body, a liquid inlet groove connected with the concave mold part is opened on the top surface of the lower mold body outside the concave mold part, and the bottom surface of the liquid inlet groove is arranged in a corrugated surface.

[0010] Furthermore, a second convex mold portion is arranged on the bottom surface of the upper mold body.

[0011] Furthermore, a liquid inlet hole is provided on the upper mold body above the closed end of the liquid inlet groove.

[0012] Furthermore, the liquid inlet hole is opened in the vertical direction, and the vertical cross section of the liquid inlet hole is in a trumpet shape that is larger at the top and smaller at the bottom.

[0013] Furthermore, the material of the lower mold body and the upper mold body is coated sand.

[0014] Furthermore, the material of the movable mold body is cold core sand.

[0015] The utility model has the following beneficial effects:

[0016] When the utility model is in use, through the setting of the movable mold body, the movable mold body is a cold core prepared by cold core sand, and the upper mold body and the lower mold body are hot cores prepared by coated sand. During the pouring process, the movable mold body is mainly used for forming the connecting plate and the connecting hole on the saddle, and the setting of the cold core sand can effectively prevent the deformation of the connecting plate and the connecting hole, thereby facilitating the subsequent coordination with the latch, reducing the labor intensity of the staff for re-processing, and having good practicality.

[0017] The utility model cooperates with the liquid inlet groove and the liquid inlet hole. After the molten metal is added into the mold through the liquid inlet hole, the molten metal enters the concave mold part through the liquid inlet groove. The arrangement of the corrugated surface on the bottom surface of the liquid inlet groove can buffer the impact of the molten metal, thereby avoiding the loss of the mold. At the same time, the direct impact of the molten metal can also be reduced to cause impact marks on the surface of the saddle body, thereby improving the casting quality of the saddle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the mold for saddle production;

[0019] Figure 2 for Figure 1 Exploded view of the structure;

[0020] Figure 3 Schematic diagram of the bottom structure of the upper mold body;

[0021] Figure 4The figure is a forming diagram of the saddle body in the lower die body;

[0022] Figure 5 It is a schematic diagram of the overall structure of the saddle body.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Lower mold body; 2. Upper mold body; 3. Movable mold body; 4. Saddle body; 101. Concave mold part; 102. First convex mold part; 103. Liquid inlet groove; 1011. Placement groove; 1031. Corrugated surface; 201. Liquid inlet hole; 202. Second convex mold part; 301. Boss; 401. Connecting plate; 4011. Connecting hole. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings of the specification.

[0026] See also Figures 1 to 5 As shown, the utility model is a mold for saddle production, comprising a lower mold body 1 and an upper mold body 2, wherein the upper mold body 2 and the lower mold body 1 are arranged in an up-and-down manner, and the material of the lower mold body 1 and the upper mold body 2 is coated sand, and the coated sand is made into a hot core;

[0027] A die portion 101 is provided on the top surface of the lower mold body 1, and a first punch portion 102 is provided on the inner side of the die portion 101, two placement grooves 1011 are symmetrically provided on the inner side of the die portion 101, and a movable mold body 3 is placed in the placement grooves 1011, and convex columns 301 are symmetrically provided on both side surfaces of the movable mold body 3, and the material of the movable mold body 3 is cold core sand, and the cold core sand is made into a cold core, which is mainly solidified and formed by ammonia. This method is a prior art, so it will not be described in detail here. The two sides of the movable mold body 3 are formed into a connecting plate 401 of the saddle body 4 by cooperation with the die portion 101, and the setting of the convex column 301 is used to form a connecting hole 4011 of the saddle body 4, and a second punch portion 202 is provided on the bottom surface of the upper mold body 2. The cooperation of the die portion 101, the first punch portion 102, the second punch portion 202 and the movable mold body 3 is used for forming the saddle body 4 during casting;

[0028] A liquid inlet groove 103 connected to the die portion 101 is provided on the top surface of the lower mold body 1 outside the die portion 101, and the bottom surface of the liquid inlet groove 103 is provided with a corrugated surface 1031. A liquid inlet hole 201 is provided on the upper mold body 2 above the closed end of the liquid inlet groove 103. The liquid inlet hole 201 is provided in the vertical direction, and the vertical cross-section of the liquid inlet hole 201 is in the shape of a trumpet with a larger top and a smaller bottom. This arrangement can reduce the impact force during pouring and can also maintain the kinetic energy during pouring. When in use, the molten metal is added from the liquid inlet hole 201 and enters the die portion 101 through the diversion of the liquid inlet groove 103 to realize the forming of the saddle body 4. The setting of the corrugated surface 1031 can reduce the impact of the molten metal and improve the forming quality of the saddle body 4.

[0029] When the above arrangement is in use, the staff first prepares the lower mold body 1, the upper mold body 2 and the movable mold body 3, then fits the movable mold body 3 in the placement groove 1011, and then covers the upper mold body 2 on the lower mold body 1, and finally adds the molten metal through the liquid inlet hole 201, thereby realizing the forming production of the saddle body 4.

[0030] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A mold for producing a saddle, comprising a lower mold body (1) and an upper mold body (2), wherein the upper mold body (2) and the lower mold body (1) are arranged in an up-and-down manner, characterized in that: A concave mold portion (101) is arranged on the top surface of the lower mold body (1), and a first convex mold portion (102) is arranged on the inner side of the concave mold portion (101); two placement grooves (1011) are symmetrically arranged on the inner side of the concave mold portion (101), and a movable mold body (3) is placed in the placement grooves (1011); convex columns (301) are symmetrically arranged on both side surfaces of the movable mold body (3); a liquid inlet groove (103) connected to the concave mold portion (101) is provided on the top surface of the lower mold body (1) outside the concave mold portion (101), and the bottom surface of the liquid inlet groove (103) is arranged to be a corrugated surface (1031).

2. A saddle production mold according to claim 1, characterized in that: A second convex mold portion (202) is provided on the bottom surface of the upper mold body (2).

3. A saddle production mold according to claim 2, characterized in that: A liquid inlet hole (201) is provided on the upper mold body (2) above the closed end of the liquid inlet groove (103).

4. A saddle production mold according to claim 3, characterized in that: The liquid inlet hole (201) is opened in the vertical direction, and the vertical cross-section of the liquid inlet hole (201) is in the shape of a trumpet that is larger at the top and smaller at the bottom.

5. A saddle production mold according to claim 1 or 4, characterized in that: The material of the lower mold body (1) and the upper mold body (2) is coated sand.

6. A saddle production mold according to claim 5, characterized in that: The material of the movable mold body (3) is cold core sand.

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