Automatic locking device for injection lifting of high-pressure casting machine

Abstract

The utility model discloses an automatic locking device for injection lifting of a high-pressure casting machine, which relates to the technical field of high-pressure casting machines and comprises an injection seat plate, an injection sliding seat and an injection oil cylinder. The injection oil cylinder is fixed to the injection sliding base, and the injection sliding base is installed on the injection base plate and vertically moves up and down along an installation groove where the injection base plate is located. The injection device further comprises injection locking seats arranged on the two sides of the injection sliding seat, each injection locking seat is provided with a plurality of locking assemblies, the piston plate is arranged in a piston cavity portion where the step portion in the cavity is located, and the cavity where the injection locking seats are located can move in a telescopic mode relative to the piston plate. The injection sliding seat is loosened through hydraulic pressure, the injection position is rapidly adjusted, manual loosening and tightening work is not needed in the working process, labor and operation time are saved, and when the die casting machine is in the working state, injection lifting is automatically locked, locking of a mechanical structure is achieved, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure casting machines, in particular to a pressure injection lifting automatic locking device for a high-pressure casting machine. Background Technique

[0002] Die casting is a method of melting metal and filling it into a mold cavity at high speed under high pressure, and solidifying the metal under this pressure to form a casting. On the same die casting machine, when different molds are used, the feeding cylinder of the mold is in different positions in the vertical direction at the center of the die casting machine. This position is called the injection position, and it is necessary to ensure that the injection system of the die casting machine is coaxial with the feeding cylinder of the mold. Therefore, when using different molds, the injection position may change, and it is necessary to adjust the injection position of the die casting machine to ensure that the injection system is coaxial with the feeding cylinder of the mold.

[0003] For traditional die casting machines, the locking of the injection lifting is achieved by screwing a "factory-shaped" pressing plate with screws, and the "factory-shaped" pressing plate presses the lifting slide seat of the injection. When adjusting the injection position, it is necessary to manually loosen the "factory-shaped" pressing plate. After adjusting the injection position, the "factory-shaped" pressing plate is manually locked again. The traditional method of adjusting the injection position is time-consuming and laborious. Considering that during operation, the personnel are located near a melting furnace with a temperature of over 600 °C, there are potential safety hazards. Combining the above operation and safety problems, a pressure injection lifting automatic locking device for a high-pressure casting machine is provided. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pressure injection lifting automatic locking device for a high-pressure casting machine, which realizes the loosening of the injection slide seat through hydraulic pressure, quickly adjusts the injection position. This working process does not require manual loosening and tightening, saving labor and operation time. When the die casting machine is in the working state, the injection lifting is automatically locked, which belongs to the locking of the mechanical structure and is safe and reliable.

[0005] To achieve the above object, the utility model provides the following technical solutions: A die-casting lifting and automatic locking device for a high-pressure die-casting machine, comprising: a shot sleeve plate, a shot slide and a shot cylinder; the shot cylinder is fixed on the shot slide, and the shot slide is installed on the shot sleeve plate and moves vertically up and down along the installation groove where the shot sleeve plate is located; it further includes shot locking seats arranged on both sides of the shot slide, and a plurality of locking components are installed on each shot locking seat for pressing the shot slide against the shot sleeve plate for locking and fixing; each group of locking components includes a locking column and a cavity, the cavity is opened on the shot locking seat and is divided into inner and outer stepped parts, and a piston plate arranged on the locking column, the piston plate is placed in the piston cavity part where the inner stepped part of the cavity is located, and the cavity where the shot locking seat is located can move telescopically relative to the piston plate, one end of the locking column extends into the locking hole opened on the shot sleeve plate and is fixed thereto, a spring is arranged on the end face of the piston plate close to the shot slide, the spring is placed in the inner stepped part of the cavity and fixed on its inner wall; and an end cover, the end cover is fixed on the outer stepped part of the cavity where the shot locking seat is located and forms a first oil cavity with the end face of the piston plate away from the spring; it further includes an oil injection channel structure, when the oil circuit acts on the first oil cavity, it is used to unlock the position of the shot slide so that the lifting adjustment of the shot position can be carried out, the oil injection channel structure includes a first oil passage opened inside the shot locking seat, one end of the first oil passage is communicated with the oil inlet hole where the shot locking seat is located, and the other end of the first oil passage is provided with a first three-way through hole, one end of the first three-way through hole is communicated with the end cover, and the other end is communicated with the oil outlet hole; the locking column is threadedly connected inside the locking hole of the shot sleeve plate and is used to penetrate the middle of the locking component.

[0006] Preferably, the locking component further includes a locking nut, the locking nut is installed at the end of the locking column, and there is a gap between its inner side surface and the end cover.

[0007] Preferably, a first sealing gasket is arranged between the cavity and the piston plate, and a second sealing gasket is arranged between the locking column and the end cover to ensure the sealing performance of the first oil cavity.

[0008] Preferably, a stepped part is arranged at the contact position between the shot locking seat and the shot slide, and a rounded part is opened at the corner of the stepped part.

[0009] Preferably, each oil inlet hole can be communicated with the total oil injection pipe orifice where the shot locking seat is located, the total oil injection pipe orifice is externally connected to an oil supply system, and the oil outlet hole is externally connected to the oil tank where the oil supply system is located.

[0010] Preferably, a first three-way valve is arranged at the position of the first three-way through hole, one end of the first three-way valve is communicated with the end cover, and the other end is communicated with the oil outlet hole.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model realizes the loosening of the injection slide by hydraulic pressure, quickly adjusts the injection position. This working process does not require manual loosening and tightening, saving labor and operation time. When the die-casting machine is in working state, the injection lifting is automatically locked, which belongs to the locking of the mechanical structure and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic assembly structure diagram of the injection seat plate, injection slide, and injection locking seat of the utility model;

[0014] Figure 2 is Figure 1 the front view structure diagram of;

[0015] Figure 3 is Figure 2 the C-C sectional structure diagram of;

[0016] Figure 4 is Figure 3 the enlarged structure diagram at A of;

[0017] Figure 5 is Figure 4 the partial design structure diagram at D of.

[0018] In the figure: 1. Injection seat plate; 2. Injection slide; 3. Injection locking seat; 4. Locking assembly; 5. Total injection oil pipe port; 6. Injection oil cylinder; 411. Locking column; 412. Locking hole; 413. Cavity; 414. Piston plate; 415. Spring; 416. Locking nut; 417. First oil passage; 418. First oil cavity; 419. Oil outlet hole; 420. End cover; 421. Oil inlet hole; 422. First three-way through hole; 423. First sealing gasket; 424. Second sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The exemplary embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings. The exemplary embodiments described below and shown in the drawings are intended to teach the principles of the present utility model so that those skilled in the art can implement and use the present utility model in several different environments and for several different applications. Therefore, the protection scope of the present utility model is defined by the appended claims, and the exemplary embodiments are not intended to, and should not be considered as, a restrictive description of the protection scope of the present utility model. Moreover, for the sake of convenience of description, the sizes of the various parts shown in the drawings are not necessarily drawn in actual proportional relationships. Regarding the orientation description, such as the orientation or positional relationship indicated by up, down, left, right, top, bottom, etc., are all based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be construed as a limitation to the present utility model. Throughout the drawings, the same elements are denoted by the same or similar reference numerals. When it may cause confusion in understanding the present disclosure or is not easy to observe and understand, the conventional structure or local structure will be omitted. Unless otherwise specifically stated, the order of the components and the assembly steps and the numerical values set forth in the embodiments do not limit the scope of the present utility model.

[0020] Embodiment 1

[0021] Please refer to Figures 1 to 5, the present utility model preferably provides a technical solution: a die-casting machine injection lifting automatic locking device, including: an injection seat plate 1, an injection slide 2 and an injection oil cylinder 6; the injection oil cylinder 6 is fixed on the injection slide 2, and the injection slide 2 is installed on the injection seat plate 1 and moves vertically up and down along the installation groove where the injection seat plate 1 is located; it further includes injection locking seats 3 arranged on both sides of the injection slide 2, and a plurality of locking components 4 are installed on each injection locking seat 3 for pressing the injection slide 2 against the injection seat plate 1 for locking and fixing; each group of locking components 4 includes a locking column 411, a cavity 413, the cavity 413 is opened on the injection locking seat 3 and is divided into inner and outer stepped parts, and a piston plate 414 arranged on the locking column 411, the piston plate 414 is placed in the piston cavity part where the inner stepped part of the cavity 413 is located, and the cavity 413 where the injection locking seat 3 is located can move telescopically relative to the piston plate 414, one end of the locking column 411 extends into the locking hole 412 opened on the injection slide 2 and is fixed to it, a spring 415 is arranged on the end face of the piston plate 414 close to the injection slide 2, the spring 415 is placed in the inner stepped part of the cavity 413 and fixed to its inner wall; and an end cover 420, the end cover 420 is fixed on the outer stepped part of the cavity 413 where the injection locking seat 3 is located, and its fixing method can be seal welding, and a first oil cavity 418 is formed between the end cover 420 and the end face of the piston plate 414 away from the spring 415; it further includes an oil injection channel structure, when the oil circuit acts on the first oil cavity 418, it is used to unlock the position of the injection slide 2 so that the lifting adjustment of the injection position can be carried out.

[0022] As Figure 1 shown, the injection slide 2 and the injection oil cylinder 6 are assembled, and the injection slide 2 is pressed and fixed by the injection locking seat 3. As Figure 4 shown, a stepped part is provided at the contact position between the injection locking seat 3 and the injection slide 2;

[0023] During the actual use process, when applying different molds, the injection position may change, and it is necessary to adjust the injection position of the die-casting machine to ensure that the injection system is coaxial with the mold feeding cylinder, that is, the up and down position of the injection slide 2 needs to be continuously adjusted to meet different use requirements;

[0024] The locking component 4 in this application, as Figure 1 shown, is divided into several groups and linearly acts on the injection locking seat 3, which is equivalent to several "bolt components". Through the structural setting of the locking component 4, specifically, as Figure 4 shown in the structure, under normal working conditions, at this time, the elastic force of the spring 415 is applied between the piston plate 414 and the injection locking seat 3. The spring 415 is preferably a disc spring. Since the piston plate 414 is fixed on the injection seat plate 1 through the locking column 411, that is, the position of the piston plate 414 is fixed, the force borne by the injection locking seat 3 is applied to the injection slide 2 to press it, which is the locking state;

[0025] When the injection position needs to be adjusted, the oil injection channel structure works and acts inside the first oil cavity 418. As Figure 4 shown, due to the fixed setting of the piston plate 414, the force generated by the hydraulic oil acts on the end cover 420, thereby driving the injection locking seat 3 to move to the right and compressing the spring 415. As a result, a gap 23 is generated between the injection slide seat 2 and the injection locking seat 3. As Figure 5 shown, at this time, the injection slide seat 2 loses the pressing limit of the injection locking seat 3 and can move up and down, which is the lifting adjustment state of the injection position;

[0026] After the injection position adjustment is completed, the first oil cavity 418 is drained of oil. Under the elastic force of the spring 415, the injection locking seat 3 returns to its original position and presses the injection slide seat 2 again, that is, it returns to the locked state;

[0027] This design has two advantages. First, when the die-casting machine is in operation, the injection lifting is automatically locked. At this time, it is a mechanical structure lock, which is safe and reliable. Second, when the injection is lifted, the injection slide seat is released by hydraulic pressure to quickly adjust the injection position. This working process does not require manual loosening and tightening, saving labor and operation time.

[0028] Furthermore, the locking column 411 is threadedly connected inside the locking hole 412 where the injection seat plate 1 is located and is used to penetrate the middle of the locking assembly 4; and the locking nut 416 is installed at the end of the locking column 411, and there is a gap between its inner side and the end cover 420. The gap is preferably 0.5 - 2 mm.

[0029] As Figure 4 shown, the locking column 411, as the main component of the locking assembly 4, is fixed on the locking hole 412 where the injection seat plate 1 is located. It is threadedly connected with the locking hole 412, and can be quickly disassembled and installed, which is convenient for the replacement and repair of a single locking assembly 4 in the later stage;

[0030] The locking nut 416 provided at the end is used to limit the movement of the end cover 420 when it moves to the right under hydraulic pressure. The locking nut 416 is located at the end of the locking column 411 and can be used for the limit when the end cover 420 moves to the right.

[0031] Furthermore, a first sealing gasket 423 is provided between the cavity 413 and the piston plate 414, and a second sealing gasket 424 is provided between the locking column 411 and the end cover 420 to ensure the sealing performance of the first oil cavity 418.

[0032] As Figure 4As shown, through the first gasket 423 and the second gasket 424 successively arranged between the cavity 413 and the piston plate 414, and between the locking column 411 and the end cap 420, when hydraulic oil acts on the first oil cavity 418, the first gasket 423 and the second gasket 424 arranged on both sides can effectively prevent leakage in the first oil cavity 418.

[0033] Furthermore, the oil injection channel structure includes a first oil passage 417 opened inside the injection locking seat 3. One end of the first oil passage 417 is connected to the oil inlet hole 421 where the injection locking seat 3 is located, and a first three-way through hole 422 is provided at the other end of the first oil passage 417. One end of the first three-way through hole 422 is connected to the end cap 420, and the other end is connected to the oil outlet hole 419.

[0034] As Figure 4 shown, when it is necessary to adjust the injection position, the first oil passage 417 is connected to the first oil cavity 418. At this time, the oil supply system enters the inside of the first oil cavity 418 through the oil inlet hole 421, the first oil passage 417, and the first three-way through hole 422. Under the action of oil pressure, the end cap 420 is forced to move to the right, further driving the injection locking seat 3 to disengage from the injection seat plate 1, thereby unlocking the position of the injection slide 2, and then the injection position can be adjusted. After the adjustment, the first three-way through hole 422 makes the first oil cavity 418 communicate with the oil outlet hole 419 to discharge the oil. After the oil discharging effect, under the elastic force of the spring 415, the end cap 420 drives the injection locking seat 3 to reset again, completing the locking of the injection slide 2.

[0035] The above describes the first three-way through hole 422 in the form of a three-way connection. However, it is not limited to this. The first three-way through hole 422 can also be replaced with a first three-way valve (i.e., adding a first three-way valve) at the position of the first three-way through hole 422. At this time, as Figure 4 shown, under normal operation, the first three-way valve works to connect the first oil passage 417 and the oil outlet hole 419. At this time, the first oil cavity 418 is not connected to the first oil passage 417, and the hydraulic oil does not act. When it is necessary to adjust the injection position, the first three-way valve works to switch the connected valve path, that is, the first oil passage 417 is connected to the first oil cavity 418. At this time, the oil supply system enters the inside of the first oil cavity 418 through the oil inlet hole 421, the first oil passage 417, and the first three-way valve. Under the action of oil pressure, the end cap 420 is forced to move to the right, further driving the injection locking seat 3 to disengage from the injection seat plate 1, thereby unlocking the position of the injection slide 2, and then the injection position can be adjusted. After the adjustment, the connected path of the first three-way valve is switched again to make the first oil cavity 418 communicate with the oil outlet hole 419 to discharge the oil. After the oil discharging effect, under the elastic force of the spring 415, the end cap 420 drives the injection locking seat 3 to reset again, completing the locking of the injection slide 2.

[0036] Embodiment 2

[0037] As other embodiments of the present utility model, each oil inlet hole 421 can communicate with the total oil injection pipe orifice 5 where the injection locking seat 3 is located. The total oil injection pipe orifice 5 is externally connected to an oil supply system, and the oil outlet hole 419 is externally connected to the oil tank where the oil supply system is located.

[0038] As Figure 5 shown, at the corner of the stepped portion at the contact position between the injection locking seat 3 and the injection sliding seat 2, a rounded portion 24 is provided to form a concave portion into which the corner portion of the injection sliding seat 2 enters.

[0039] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Among them, there are various ways of detachable installation. For example, it can be by means of cooperation between insertion and snap, or by means of bolt connection, etc.

[0040] The above combines the embodiments and the drawings to clearly and completely describe the concept, specific structure and technical effects generated by the present utility model, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model. In addition, all the connection / linkage relationships mentioned in the text do not refer only to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0041] The above specific description of the present utility model is only for further illustration of the present utility model and cannot be understood as a limitation on the protection scope of the present utility model. Any non-essential improvements and adjustments made by those skilled in the art according to the content of the above utility model fall within the protection scope of the present utility model.

[0042] In the description of the present application, "a plurality of" means two or more than two, unless otherwise specifically defined. Unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. Although the present utility model has been described with reference to various specific embodiments, it should be understood that modifications can be made within the spirit and scope of the described inventive concept. Therefore, it is intended that the present utility model is not limited to the described embodiments, but will have the full scope defined by the language of the appended claims.

Claims

1. An automatic locking device for injection lifting of a high-pressure casting machine, characterized in that: include: An injection seat plate (1), an injection slide seat (2) and an injection cylinder (6); The injection oil cylinder (6) is fixed on the injection slide (2), and the injection slide (2) is mounted on the injection seat plate (1) and moves vertically up and down along the mounting groove of the injection seat plate (1); It also includes injection locking seats (3) arranged on both sides of the injection slide (2), and each of the injection locking seats (3) is equipped with a plurality of locking components (4) for pressing the injection slide (2) onto the injection seat plate (1) for locking and fixing; Each group of the locking components (4) comprises a locking column (411), a cavity (413), the cavity (413) being formed on the injection locking seat (3) and being divided into inner and outer step portions, and a piston plate (414) being arranged on the locking column (411), the piston plate (414) being arranged on the piston cavity portion where the step portion is located in the cavity (413), and the cavity (413) where the injection locking seat (3) is located can be telescopically moved relative to the piston plate (414), one end of the locking column (411) extends to the inside of a locking hole (412) formed on the injection seat plate (1) and is fixed thereto, and a spring (415) is arranged on the end surface of the piston plate (414) close to the injection slide seat (2), and the spring (415) is arranged on the step portion in the cavity (413) and fixed on its inner wall; and an end cover (420), wherein the end cover (420) is fixed to an outer step portion of the cavity (413) where the injection locking seat (3) is located, and forms a first oil chamber (418) between the end cover (420) and an end surface of the piston plate (414) away from the spring (415); It also includes an oil injection channel structure. When the oil passage acts on the first oil chamber (418), the position of the injection slide (2) is unlocked so that the injection position can be raised or lowered. The oil injection channel structure includes a first oil passage (417) opened inside the injection locking seat (3). One end of the first oil passage (417) is connected to the oil inlet hole (421) where the injection locking seat (3) is located. The other end of the first oil passage (417) is provided with a first three-way hole (422). One end of the first three-way hole (422) is connected to the end cover (420), and the other end is connected to the oil outlet hole (419). The locking column (411) is threadedly connected to the inside of the locking hole (412) of the injection seat plate (1) and is used to penetrate the middle part of the locking assembly (4).

2. The automatic locking device for injection lifting of a high pressure casting machine according to claim 1 is characterized in that: The locking assembly (4) further comprises a locking nut (416), wherein the locking nut (416) is mounted on the end of the locking column (411), and a gap is provided between the inner side surface of the locking nut and the end cover (420).

3. The automatic locking device for injection lifting of a high pressure casting machine according to claim 1 is characterized in that: A first sealing gasket (423) is provided between the cavity (413) and the piston plate (414), and a second sealing gasket (424) is provided between the locking column (411) and the end cover (420), so as to ensure the sealing performance of the first oil chamber (418).

4. The automatic locking device for injection lifting of a high pressure casting machine according to claim 1, characterized in that: A step portion is provided at the contact position between the injection locking seat (3) and the injection sliding seat (2), and a rounded portion (24) is provided at the corner of the step portion.

5. The automatic locking device for injection lifting of a high pressure casting machine according to claim 1, characterized in that: Each of the oil inlet holes (421) can be in communication with a main oil filling pipe opening (5) where the injection locking seat (3) is located, the main oil filling pipe opening (5) is externally connected to an oil supply system, and the oil outlet holes (419) are externally connected to an oil tank where the oil supply system is located.

6. The automatic locking device for injection lifting of a high pressure casting machine according to claim 1, characterized in that: A first three-way valve is provided at the position of the first three-way hole (422), wherein one end of the first three-way valve is in communication with the end cover (420), and the other end of the first three-way valve is in communication with the oil outlet hole (419).

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