Structure capable of improving stripping stability of low-pressure casting machine

Abstract

A structure capable of improving the stability of a low-pressure casting machine mold stripping comprises an upper mold mounting plate, a lower mold mounting plate and four supporting stand columns arranged at the four corner positions of the lower mold mounting plate, and a guide mechanism is further arranged between the upper mold mounting plate and the lower mold mounting plate. The guide mechanism comprises a cylindrical guide rail, a guide wheel, a connecting shaft, a guide wheel mounting frame, a connecting block and a limiting assembly, an arc-shaped groove is formed in the guide wheel in the circumferential direction and matched with the cylindrical guide rail, and the guide wheel is connected with the connecting shaft through a bearing. The stability of the upper mold mounting plate in the lifting process is improved through cooperation of the guide wheels and the cylindrical guide rails, specifically, the guide wheels are synchronously lifted upwards when the upper mold plate is lifted through cooperation of the guide wheels and the cylindrical guide rails, and the guide wheels can rotate. The guide wheels tightly abut against the cylindrical guide rails through the limiting mechanisms, and the problem that in the prior art, the upper die plate shakes in the rising process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure casting equipment, in particular to a structure capable of improving the demoulding stability of a low-pressure casting machine. Background Art

[0002] Low-pressure casting machine is a general equipment for low-pressure casting of aluminum alloys. It can be widely used in the production of aluminum alloy castings in automobiles, motorcycles, instruments, textile machinery and aerospace industries. Low-pressure casting machines are generally equipped with upper mold mounting plates and lower mold mounting plates for mounting molds. When the casting is completed, the upper mold mounting plate needs to be lifted up by the hydraulic cylinder system to achieve the purpose of disassembling the upper and lower molds. Since the weight of the general mold is relatively large, in order to ensure the stability of the equipment operation when lifting the upper mold mounting plate, a guide device is generally set between the upper mold mounting plate and the lower mold mounting plate. This guide device generally achieves relative movement through the cooperation between the guide column and the sliding sleeve. The guide sleeve is set on the upper mold mounting plate. Although this can improve the stability of the upper mold plate during the lifting process. However, there is a certain gap between the guide sleeve and the guide column. Because the upper mold and the casting are in a sticky state when the upper mold is removed, the hydraulic lifting system needs to apply a large traction force to separate the upper mold from the casting. Castings are generally irregular in structure, so the gap between the guide pin and the guide sleeve causes shaking during the actual lifting of the upper mold plate, which further causes shaking during the lifting of the upper mold plate, which easily scratches the casting. This problem needs to be further solved. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is that in the prior art, there is a certain gap between the guide sleeve and the guide column. Also, because the upper mold and the casting are in a sticky state when the upper mold is removed, the hydraulic lifting system needs to apply a large traction force to separate the upper mold from the casting. Castings are generally irregular structures, so the gap between the guide column and the guide sleeve leads to shaking during the actual lifting of the upper mold plate, which further leads to shaking during the lifting of the upper mold plate, which is easy to scratch the casting.

[0005] (II) Technical solution

[0006] In order to solve the above problems, the utility model provides the following technical solutions:

[0007] A structure that can improve the demolding stability of a low-pressure casting machine comprises an upper mold mounting plate, a lower mold mounting plate and four supporting columns arranged at four corners of the lower mold mounting plate. A guide mechanism is also arranged between the upper mold mounting plate and the lower mold mounting plate. The guide mechanism comprises a cylindrical guide rail, a guide wheel, a connecting shaft, a guide wheel mounting frame, a connecting block and a limit assembly. An arc groove is arranged in the circumferential direction of the guide wheel, and the arc groove cooperates with the cylindrical guide rail. The guide wheel is connected to the connecting shaft through a bearing, and both ends of the connecting shaft are connected to the lower part of the guide wheel mounting frame. The limit assembly is arranged at the lower part of the guide wheel mounting frame and close to one side of the upper mold mounting plate. One end of the connecting block is connected to the guide wheel mounting frame, and the other end is fixedly connected to the upper end surface of the upper mold mounting plate.

[0008] Furthermore, a connecting column is provided on both sides of the upper part of the guide wheel mounting frame, and mounting holes are provided on both sides of the connecting block at one end close to the guide wheel mounting frame. The connecting column and the mounting hole are connected by a bearing, and the guide wheel mounting frame can rotate.

[0009] Furthermore, the limiting assembly includes a threaded rod, which is connected to the lower part of the guide wheel mounting frame by a threaded connection. The end of the threaded rod away from the guide wheel mounting frame is also provided with a butterfly spring, a pin hole and a pin. A plurality of the butterfly springs are sleeved on the pin, and the pin is arranged in the pin hole and can move in the pin hole. Further, the limiting assembly is provided with a group and is symmetrically arranged on the guide wheel mounting frame.

[0010] Furthermore, the guide wheel is made of metal material.

[0011] Furthermore, the cylindrical guide rails are provided with four and are respectively arranged on the four supporting columns, and the guide mechanisms are also provided with four and are matched with the four cylindrical guide rails.

[0012] (III) Beneficial effects

[0013] The beneficial effects of the utility model are:

[0014] 1: The cooperation between the guide wheel and the column guide rail increases the stability of the upper mold mounting plate during the lifting process. Specifically, through the cooperation between the guide wheel and the column guide rail, the guide wheel is synchronously lifted upward when the upper mold plate is lifted, and the guide wheel can rotate. The guide wheel is tightly pressed against the column guide rail through the limit mechanism, which solves the problem of shaking of the upper mold plate during the lifting process in the prior art.

[0015] 2: Due to the characteristics of the casting process, the cylindrical guide rail is easily sticky and dirty. The setting of multiple butterfly springs can ensure that the guide wheel can smoothly pass through the sticky and dirty position through its telescopic characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the guide mechanism structure of the utility model;

[0018] Figure 3 It is a schematic diagram of part of the guiding mechanism of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the connecting column of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the connection block of the utility model;

[0021] Figure 6 It is a schematic diagram of the arc-shaped groove of the utility model;

[0022] Figure 7 It is a structural schematic diagram of the limit assembly of the utility model.

[0023] Markings in the figure: 1-upper mold mounting plate, 2-lower mold mounting plate, 3-support column, 4-guide mechanism, 4a-column guide rail, 4b-guide wheel, 4c-connecting shaft, 4d-guide wheel mounting frame, 4e-connecting block, 4f-limiting assembly, 4g-arc groove, 4h-connecting column, 4j-mounting hole, 4fa-threaded rod, 4fb-butterfly spring, 4fc-pin hole, 4fd-pin. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] See also Figure 1-7 The structure shown in the figure can improve the demoulding stability of a low-pressure casting machine, comprising an upper mold mounting plate 1, a lower mold mounting plate 2 and four supporting columns 3 arranged at four corners of the lower mold mounting plate 2, and a guide mechanism 4 is also arranged between the upper mold mounting plate 1 and the lower mold mounting plate 2. When demoulding, the upper mold mounting plate 1 is lifted up by an external hydraulic lifting system, and when the upper mold mounting plate 1 is removed from the casting, the provided guide mechanism and 4 further enhance the stability of the upper mold mounting plate 1 when it is lifted up during the removal process.

[0027] The guide mechanism 4 comprises a cylindrical guide rail 4a, a guide wheel 4b, a connecting shaft 4c, a guide wheel mounting frame 4d, a connecting block 4e and a limit assembly 4f. The guide wheel 4b is provided with an arc groove 4g in the circumferential direction, and the arc groove 4g matches the cylindrical guide rail 4a. The guide wheel 4b is connected to the connecting shaft 4c through a bearing. Both ends of the connecting shaft 4c are connected to the lower part of the guide wheel mounting frame 4d. The limit assembly 4f is arranged at the lower part of the guide wheel mounting frame 4d and close to the side of the upper mold mounting plate 1. One end of the connecting block 4e is connected to the guide wheel mounting frame 4d, and the other end is fixedly connected to the upper end surface of the upper mold mounting plate 1. Since the upper mold mounting plate 1 is fixedly connected to the connecting block 4e, the guide mechanism 4 can move with the upper mold mounting plate 1. In the process, the guide wheel 4b is connected to the connecting shaft 4c through a bearing, and the guide wheel 4b can rotate, thereby realizing the movement of the guide wheel 4b along the cylindrical guide rail 4a. At the same time, the limit assembly 4f includes a threaded rod 4fa, which is connected to the lower part of the guide wheel mounting frame 4d by means of a threaded connection. A butterfly spring 4fb, a pin hole 4fc and a pin 4fd are also provided at one end of the threaded rod 4fa away from the guide wheel mounting frame 4d. Multiple butterfly springs 4fb are sleeved on the pin 4fd, and the pin 4fd is set in the pin hole and can move in the pin hole 4fc. A connecting column 4h is provided on both sides of the upper part of the guide wheel mounting frame 4d, and mounting holes 4j are provided on both sides of the connecting block 4e close to the guide wheel mounting frame 4d. The connecting column 4h and the mounting hole 4j are connected by a bearing, and the guide wheel mounting frame 4d can rotate.

[0028] The threaded rod 4fa on the limit device 4f is connected to the guide wheel mounting frame 4d, and the pin 4fd on the butterfly spring 4fb set at the other end is pressed against the side of the upper mold mounting plate 1. At this time, due to the telescopic characteristics of the butterfly spring 4fb, the guide wheel mounting frame 4d is also subjected to a force applied by the butterfly spring 4fb in the direction of the columnar guide rail 4a, thereby making the guide wheel 4b tightly fit with the columnar guide rail 4a under the action of this force. Finally, the guide mechanism 4 is pressed against the columnar guide rail 4a and the upper mold mounting plate 1 at the same time during the upward movement of the upper mold plate 1, thereby improving the stability of the upper mold mounting plate 1 when it is lifted by the external lifting system.

[0029] Specifically, the limit assembly 4f is provided with a group and is symmetrically arranged on the guide wheel mounting frame 4d, the guide wheel 4b is made of metal material, the columnar guide rails 4a are provided with four and are respectively arranged on four supporting columns 3, and the guide mechanism 4 is also provided with four and cooperates with the four columnar guide rails 4a.

[0030] Working principle: When the mold is removed, the upper mold mounting plate 1 is lifted up by the external hydraulic lifting system. Since the upper mold mounting plate 1 is fixedly connected to the connecting block 4e, the guide mechanism 4 can move with the upper mold mounting plate 1. During the process, the guide wheel 4b is connected to the connecting shaft 4c through a bearing, and the guide wheel 4b can rotate, thereby realizing the movement of the guide wheel 4b along the cylindrical guide rail 4a. The threaded rod 4fa on the limit device 4f is connected to the guide wheel mounting frame 4d, and the pin 4fd on the butterfly spring 4fb set at the other end is pressed against the side of the upper mold mounting plate 1. At this time, due to the telescopic characteristics of the butterfly spring 4fb, the guide wheel mounting frame 4d is also subjected to a force applied by the butterfly spring 4fb in the direction of the cylindrical guide rail 4a, thereby making the guide wheel 4b tightly fit with the cylindrical guide rail 4a under the action of this force. Finally, the guide mechanism 4 is pressed against the cylindrical guide rail 4a and the upper mold mounting plate 1 during the upward movement of the upper mold plate 1, thereby improving the stability of the upper mold mounting plate 1 when it is lifted by the external lifting system.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A structure capable of improving the demoulding stability of a low-pressure casting machine, comprising an upper mold mounting plate (1), a lower mold mounting plate (2), and four supporting columns (3) arranged at four corners of the lower mold mounting plate (2), characterized in that: A guide mechanism (4) is also provided between the upper mold mounting plate (1) and the lower mold mounting plate (2), and the guide mechanism (4) comprises a columnar guide rail (4a), a guide wheel (4b), a connecting shaft (4c), a guide wheel mounting frame (4d), a connecting block (4e) and a limit assembly (4f). An arc groove (4g) is provided in the circumferential direction of the guide wheel (4b), and the arc groove (4g) cooperates with the columnar guide rail (4a). The guide wheel (4b) is connected to the connecting shaft (4c) through a bearing. Both ends of the connecting shaft (4c) are connected to the lower part of the guide wheel mounting frame (4d). The limit assembly (4f) is arranged at the lower part of the guide wheel mounting frame (4d) and close to one side of the upper mold mounting plate (1). One end of the connecting block (4e) is connected to the guide wheel mounting frame (4d), and the other end is fixedly connected to the upper end surface of the upper mold mounting plate (1).

2. A structure for improving the demoulding stability of a low-pressure casting machine according to claim 1, characterized in that: A connecting column (4h) is provided on both sides of the upper part of the guide wheel mounting frame (4d); a mounting hole (4j) is provided on both sides of one end of the connecting block (4e) close to the guide wheel mounting frame (4d); the connecting column (4h) and the mounting hole (4j) are connected via a bearing, and the guide wheel mounting frame (4d) can rotate.

3. The structure for improving the demoulding stability of a low-pressure casting machine according to claim 1, characterized in that: The limit assembly (4f) comprises a threaded rod (4fa), the threaded rod (4fa) being connected to the lower part of the guide wheel mounting frame (4d) by means of a threaded connection, and a plurality of butterfly springs (4fb), a pin hole (4fc) and a pin (4fd) are also provided at one end of the threaded rod (4fa) away from the guide wheel mounting frame (4d), the plurality of butterfly springs (4fb) are sleeved on the pin (4fd), and the pin (4fd) is arranged in the pin hole (4fc) and can move in the pin hole (4fc).

4. A structure for improving the demoulding stability of a low-pressure casting machine according to claim 3, characterized in that: The limiting assembly (4f) is provided in a group and is symmetrically arranged on the guide wheel mounting frame (4d).

5. The structure for improving the demoulding stability of a low-pressure casting machine according to claim 1, characterized in that: The guide wheel (4b) is made of metal material.

6. The structure for improving the demoulding stability of a low-pressure casting machine according to claim 1, characterized in that: The columnar guide rails (4a) are provided with four and are respectively arranged on the four supporting columns (3), and the guide mechanisms (4) are also provided with four and are matched with the four columnar guide rails (4a).

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