Translation type high-stroke hydraulic die clamping device

Abstract

The utility model relates to a translation type high-stroke hydraulic die clamping device which comprises a body, a pressing plate and a power device, a sliding seat is formed at the top of the body, a sliding way is formed in the sliding seat, a sliding block is formed on the pressing plate and is in sliding fit with the sliding way, the front end of the pressing plate protrudes out of the body, and the power device is arranged at the top of the pressing plate. And the power output end downwards penetrates through the pressing plate and is connected with the body. According to the technical scheme, the translation type pressing plate is used for replacing a rotary type pressing plate, so that interference of the body on the clamping stroke is reduced, the clamping stroke of the pressing plate can be greatly increased, and the mold clamping device can be matched with large-size mold parts.

Description

Technical Field

[0001] The present invention relates to the technical field of clamping devices, and more specifically, to a translational high-stroke hydraulic clamping device. Background Art

[0002] The main function of the clamping device is to fix the mold components to ensure that the mold components maintain a stable position and posture during the injection molding process. Through the clamping of the clamping device, the mold components are not likely to translate or deform during the high-pressure injection and cooling processes, thereby ensuring the molding accuracy and consistency of the product. In addition, the clamping device can also provide stable support and protection during the mold closing process to prevent the mold components from accidentally translating or being damaged during the high-pressure injection and cooling processes. Especially in large injection molding machines, the safety of the clamping device is particularly important.

[0003] When designing the clamping device, it is necessary to consider adapting to mold components of different shapes and sizes. The hydraulic clamping device is a common type of clamping device. The conventional hydraulic clamping device is a rotary type, which has a pressure plate rotatably connected to the clamping device body. One end of the pressure plate is connected to the power output end of the oil cylinder, and the other end protrudes outside the clamping device body for clamping the mold components. By pushing the end of the pressure plate connected to the oil cylinder, the pressure plate rotates, thereby changing the angle between the other end and the injection molding machine table, and realizing the clamping of mold components of different shapes and sizes. As shown in the Chinese patent with the publication number CN213766749U and the patent name "A Rotary Clamping Device", when the clamping device performs the clamping action, the lubricating oil is input from the oil inlet by the oil supply device. The lubricating oil pushes up the stopper and compresses the oil inlet spring. The lubricating oil continuously flows into the oil cylinder, and the pressure in the oil cylinder gradually increases until it balances with the oil supply device. The oil inlet spring resets and pushes the stopper downward to block the oil inlet. The piston moves upward to push up the driving end of the pressure plate, and the clamping end of the pressure plate moves downward according to the lever principle to clamp the mold. At this time, the return spring in the clamping device body is compressed. When performing the action of loosening the mold, the rotating screw aligns the through hole on the spherical stopper with the oil outlet, and the lubricating oil smoothly flows out of the oil cylinder through the oil outlet. The piston moves downward due to gravity, and the return spring assists the pressure plate to return to the normal state, and the clamping device loosens the mold.

[0004] The problem with the above-mentioned rotary hydraulic clamping device is that the clamping stroke of the pressure plate is limited by the bottom body. This is mainly because due to the existence of the body, when the driving end of the pressure plate rotates downward, it will be blocked by the body, thereby greatly reducing the space for the driving end to rotate downward, and correspondingly reducing the angle that the clamping end of the pressure plate can rotate upward. This directly results in a short clamping stroke of the pressure plate, so such a rotary hydraulic clamping device is not suitable for large-size mold components. Summary of the Invention

[0005] In view of the above situation, to overcome the problem that in the existing rotary hydraulic clamping die holder, when the driving end of the pressure plate rotates downward due to the existence of the body, it will be blocked by the body, resulting in a small upward rotation angle of the clamping end of the pressure plate, directly affecting the clamping stroke of the pressure plate and being unable to match large-sized die components, the purpose of the present utility model is to provide a clamping die holder that can reduce the interference of the body on the clamping stroke by replacing the rotary pressure plate with a translational pressure plate, so that the clamping stroke of the pressure plate can be greatly increased to be able to match large-sized die components.

[0006] To achieve the above purpose, the technical solution of the present invention is:

[0007] A translational high-stroke hydraulic clamping die holder, which includes a body, a pressure plate and a power device. A slide seat is formed on the top of the body, a slideway is opened on the slide seat, a slider is formed on the pressure plate, the slider is slidably matched in the slideway, the front end of the pressure plate protrudes outside the body, and the power device is arranged on the top of the pressure plate, and its power output end penetrates downward through the pressure plate and is connected to the body.

[0008] Preferably, it further includes a first return spring, the first return spring is sleeved on the power output end of the power device, and the upper and lower ends are respectively abutted against the pressure plate and the body.

[0009] Preferably, a first limiting groove is opened on the top of the body, and the lower end of the first return spring is embedded in the first limiting groove.

[0010] Preferably, the slideway is an inclined slideway, and the included angle between it and the horizontal reference plane of the top of the body is 120°.

[0011] Preferably, it further includes a second return spring, and the upper and lower ends of the second return spring are respectively abutted against the pressure plate and the slide seat.

[0012] Preferably, a second limiting groove is opened on the slide seat, a third limiting groove is opened on the pressure plate, the second limiting groove communicates with the slideway, the third limiting groove communicates with the bottom of the pressure plate, the upper end of the second return spring is installed in the third limiting groove, and the lower end is installed in the second limiting groove.

[0013] Preferably, a T-shaped guide rail is formed at the bottom of the body.

[0014] Preferably, the power device is an oil cylinder, the oil cylinder includes a cylinder body, a cylinder head and a piston rod, the cylinder body is arranged on the pressure plate, the cylinder head covers the cylinder body, the piston rod is slidably matched with the inner cavity of the cylinder body, and the piston rod penetrates downward through the pressure plate and is connected to the body, and a first oil injection port and a second oil injection port are opened on the cylinder body.

[0015] Preferably, the clamping device body includes an upper housing and a lower housing, the upper housing and the lower housing are fixed by bolts, the sliding channel includes an upper channel groove and a lower channel groove, the upper channel groove and the lower channel groove are respectively located on the upper housing and the lower housing, and the locking groove is located on the lower housing.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] When installing the mold parts with the clamping device of the present utility model, the mold parts to be fixed are embedded into the clamping groove through the side edges and pressed on the table by the pressing plate, ensuring that the mold parts can be firmly fixed on the table without the aid of screws, thereby improving the installation efficiency, safety and consistency of the mold parts and injection molding production. Moreover, the height of the clamping groove is the clamping stroke of the pressing plate, which can increase or decrease correspondingly with the change of the position of the pressing plate, significantly increasing the clamping stroke of the pressing plate so as to be able to match mold parts of different shapes and sizes, enabling mold parts with larger thickness to be installed on the injection molding machine, ensuring high versatility and flexibility, and meeting diverse injection molding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an overall structural schematic diagram of the clamping device of the present utility model when the pressing plate has not been translated downward;

[0019] Figure 2 is an overall structural schematic diagram of the clamping device of the present utility model when the pressing plate has been translated downward;

[0020] Figure 3 is an exploded structural schematic diagram of the clamping device of the present utility model;

[0021] Figure 4 is an exploded structural schematic diagram of the clamping device of the present utility model from another perspective;

[0022] Figure 5 is a sectional structural schematic diagram of the clamping device of the present utility model when the pressing plate has not been translated downward;

[0023] Figure 6 is a sectional structural schematic diagram of the clamping device of the present utility model when the pressing plate has been translated downward;

[0024] Figure 7 is a sectional structural schematic diagram of the clamping device body of the present utility model;

[0025] Figure 8 is an overall structural schematic diagram of the clamping device of the present utility model when it is installed on the table and the pressing plate is pressing on the mold parts;

[0026] Figure 9 is an overall structural schematic diagram of the clamping device of the present utility model when it is installed on the table, the body is located at a position away from the mold parts, and the pressing plate has not been translated downward.

[0027] As shown in the figure:

[0028] 1. Body; 101. Slide; 101a. Slideway; 101b. Second limiting groove; 102. First limiting groove; 103. T-shaped guide rail; 2. Pressure plate; 201. Slide block; 202. Third limiting groove; 3. Power device; 301. Oil cylinder; 301a. Cylinder block; 301b. Cylinder head; 301c. Piston rod; 301d. First oil filling port; 301e. Second oil filling port; 4. First return spring; 5. Second return spring; 6. Mold component; 7. Table plate; 701. Guide groove. Specific embodiments

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of simplified description, rather than indicating or implying that this orientation is a specific orientation that must be possessed, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention.

[0031] As Figure 1 、 Figure 2 、 Figure 8 and Figure 9 shown, the present utility model relates to a translational high-stroke hydraulic mold clamp, which comprises a body 1, a pressure plate 2 and a power device 3. The body 1 is used for being installed on the table plate 7 of the clamping unit of an injection molding machine. A slide 101 is formed at the top of the body 1. A slideway 101a is formed on the slide 101. One end of the slideway 101a is opposite to the top of the slide 101, and the other end is opposite to the bottom of the slide 101, which makes the slideway 101a run vertically. A slide block 201 is formed on the pressure plate 2. The slide block 201 is slidably matched in the slideway 101a, which connects the pressure plate 2 with the slide 101 and the integral body 1. The pressure plate 2 moves up and down synchronously with the slide block 201 along the slideway 101a and changes the distance from the body 1.

[0032] The front end of the pressing plate 2 protrudes outside the body 1, thus avoiding the blocking interference of the pressing body 1 and directly forming a clamping groove with the injection molding machine table 7 connected to the body 1. When installing the mold component 6, the mold component 6 to be fixed is inserted into the clamping groove through the side edge and pressed on the table 7 by the pressing plate 2, ensuring that the mold component 6 can be firmly fixed on the table 7 without the aid of a screw, thereby improving the installation, injection molding production efficiency, safety and consistency of the mold component 6. Moreover, the height of the clamping groove is the clamping stroke of the pressing plate 2, which can increase or decrease correspondingly with the change of the position of the pressing plate 2, significantly increasing the clamping stroke of the pressing plate 2 to be able to match mold components 6 of different shapes and sizes, enabling mold components 6 with a larger thickness to be installed on the injection molding machine, ensuring high versatility and flexibility and meeting diverse injection molding requirements;

[0033] The power device 3 is arranged on the top of the pressing plate 2, and its power output end penetrates downward through the pressing plate 2 and is connected to the body 1. The power device 3 provides power for the pressing plate 2 to reciprocate along the slideway 101a, so that there is no need to manually control the pressing plate 2 to adjust the clamping stroke when loading and unloading the mold component 6, improving the efficiency of loading and unloading the mold component 6 and injection molding production.

[0034] As Figure 1 and Figures 3 to 6 shown, it also includes a first return spring 4. The first return spring 4 is sleeved on the power output end of the power device 3, and its upper and lower ends are respectively abutted against the pressing plate 2 and the body 1. The first return spring 4 provides support for the pressing plate 2 to prevent the pressing plate 2 from freely falling along the output end of the power device 3. And the first return spring 4 will deform when the pressing plate 2 moves downward from the upper end of the slideway 101a through the slider 201. The elastic force generated by the deformation provides power for the upward movement of the pressing plate 2 when the mold component 6 needs to be removed, helping the pressing plate 2 to quickly reset upward, thereby improving the efficiency of removing the mold component 6 and injection molding production.

[0035] As Figures 3 to 6 shown, a first limiting groove 102 is opened at the top of the body 1. The lower end of the first return spring 4 is embedded in the first limiting groove 102. The inner wall of the first limiting groove 102 limits the first return spring 4 to prevent the first spring from deflecting and ensuring that the first return spring 4 can maintain linear expansion and contraction, thereby extending the service life of the first return spring 4.

[0036] As Figures 2 to 7 shown, the slideway 101a is an inclined slideway 101a. Here, the top of the body 1 is defined as a horizontal reference plane, and the included angle between the slideway 101a and the horizontal reference plane formed by the top of the body 1 is 120°. The inclined slideway 101a can provide certain support for the slider 201, and cooperate with the first return spring 4 to keep the pressing plate 2 balanced.

[0037] As shown Figures 3 to 6 in FIG. 1, it further includes a second return spring 5. The upper and lower ends of the second return spring 5 are respectively abutted against the pressure plate 2 and the slide base 101. Generally speaking, the first return spring 4 and the second return spring 5 are respectively close to the front end and the rear end of the pressure plate 2. Together with the inclined slideway 101a, they jointly provide support for the pressure plate 2, enabling the pressure plate 2 to better maintain balance. Correspondingly, the second return spring 5 will also deform when the pressure plate 2 moves downward from the upper end of the slideway 101a through the slider 201. When the mold part 6 needs to be removed, the elastic force generated by the deformation provides power for the upward movement of the pressure plate 2, and cooperates with the first return spring 4 to help the pressure plate 2 quickly return upward, thereby further improving the efficiency of removing the mold part 6 and injection molding production.

[0038] As shown Figures 3 to 6 in FIG. 2, a second limiting groove 101b is formed on the slide base 101, and a third limiting groove 202 is formed on the pressure plate 2. The second limiting groove 101b communicates with the slideway 101a, and the third limiting groove 202 communicates with the bottom of the pressure plate 2. The upper end of the second return spring 5 is installed in the third limiting groove 202, and the lower end is installed in the second limiting groove 101b. This enables the upper and lower ends of the second return spring 5 to be limited by the third limiting groove 202 and the second limiting groove 101b, preventing the second spring from deflecting and ensuring that the second return spring 5 can maintain linear expansion and contraction, thereby extending the service life of the second return spring 5.

[0039] As shown Figures 1 to 4 in FIG. 3, a T-shaped guide rail 103 is formed at the bottom of the body 1. The T-shaped guide rail is used for sliding cooperation with the guide groove 701 on the installed injection molding machine table 7, enabling the mold clamping device of the present utility model to slide along the injection molding machine table 7. Through the sliding, the clamping groove formed by the front end of the pressure plate 2 and the injection molding machine table 7 will disappear. At this time, the pressure plate 2 releases the restriction on the mold part 6 on the table 7, enabling the mold part 6 to be directly installed and removed vertically. This is more conducive to the installation and removal of the mold part 6 with a large size and a large thickness dimension.

[0040] As shown Figures 3 to 6As shown in the figure, the power device 3 is an oil cylinder 301. The oil cylinder 301 is composed of a cylinder block 301a, a cylinder head 301b, and a piston rod 301c. The cylinder block 301a has a hollow inner cavity. The cylinder head 301b is covered on the cylinder block 301a. The piston rod 301c is the power output end. It is slidably fitted with the inner cavity of the cylinder block 301a and extends outward, and penetrates through the pressing plate 2 to be connected to the body 1. The cylinder block 301a is provided with a first oil injection port 301d and a second oil injection port 301e for pushing its power output end to reciprocate when oil is supplied. The first oil injection port 301d and the second oil injection port 301e are connected to the hydraulic oil input end through an oil supply pipeline. The piston rod 301c divides the inner cavity of the cylinder block 301a into a front cavity and a rear cavity. The first oil injection port 301d and the second oil injection port 301e are respectively communicated with the front cavity and the rear cavity. When the hydraulic oil is injected through the first oil injection port 301d, the pressing plate 2 will move downward along the slideway 101a, so that the height of the clamping groove decreases. When the hydraulic oil is injected through the second oil injection port 301e, the pressing plate 2 will move upward along the slideway 101a, so that the height of the clamping groove increases. In the above settings, the oil cylinder 301, the oil supply pipeline, and the hydraulic oil input end form a hydraulic system that can usually provide a powerful driving force for the pressing plate 2. Due to the incompressibility of the hydraulic oil, the energy can be more effectively converted into mechanical energy for moving the pressing plate 2.

[0041] Combined with Figures 1 to 9 , the mold clamping device of the present utility model is slidably connected to the guide groove 701 of the injection molding machine table 7 through the T-shaped guide rail 103 of the body 1. At the same time, the hydraulic oil input end is connected to the first oil injection port 301d and the second oil injection port 301e of the power device 3 of the oil cylinder 301. After the installation is completed, the mold can be installed and removed. When installing the mold part 6, first control the body 1 to move along the guide groove 701 of the table 7 to move away from the area on the table 7 for installing the mold part 6. Then place the mold part 6 on the table 7, and then move the body 1 back. At the same time, input hydraulic oil into the first oil injection port 301d of the oil cylinder 301 to make the pressing plate 2 move upward along the slideway 101a on the slide seat 101 of the body 1, increasing the height of the clamping groove to ensure that the side edge of the mold part 6 to be installed can be embedded in the clamping groove. After the side edge of the mold part 6 is embedded, input hydraulic oil into the second oil injection port 301e, so that the pressing plate 2 moves downward until it contacts the mold part 6, pressing the mold part 6 on the table 7. At this time, both the first return spring 4 and the second return spring 5 are compressed. When the mold part 6 needs to be removed, input hydraulic oil into the first oil injection port 301d of the oil cylinder 301 again. Under the action of the oil cylinder 301, the pressing plate 2 moves upward along the slideway 101a, and then control the body 1 to move along the guide groove 701 away from the area on the table 7 for installing the mold part 6. At this time, the mold can be successfully removed.

[0042] The above embodiments and the descriptions in the specification only illustrate the principles and the best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed present invention.

Claims

1. A translational high-stroke hydraulic clamping die holder, characterized in that It includes a main body (1), a pressing plate (2) and a power device (3). A sliding seat (101) is formed at the top of the main body (1). A sliding track (101a) is provided on the sliding seat (101). A sliding block (201) is formed on the pressing plate (2). The sliding block (201) is slidably engaged in the sliding track (101a). The front end of the pressing plate (2) protrudes outside the main body (1). The power device (3) is arranged on the top of the pressing plate (2), and its power output end penetrates downward through the pressing plate (2) and is connected to the main body (1).

2. The translational high-stroke hydraulic die clamp according to claim 1, wherein It further includes a first return spring (4). The first return spring (4) is sleeved on the power output end of the power device (3), and its upper and lower ends are respectively abutted against the pressing plate (2) and the main body (1).

3. The translational high-stroke hydraulic clamping die holder according to claim 2, wherein A first limiting groove (102) is provided at the top of the main body (1). The lower end of the first return spring (4) is embedded in the first limiting groove (102).

4. A translational high-stroke hydraulic die clamping device according to any one of claims 1 to 3, characterized in that, The sliding track (101a) is an inclined sliding track (101a), and the included angle between it and the horizontal reference plane at the top of the main body (1) is 120°.

5. The translational high-stroke hydraulic die clamp according to claim 4, wherein, It further includes a second return spring (5). The upper and lower ends of the second return spring (5) are respectively abutted against the pressing plate (2) and the sliding seat (101).

6. The translational high-stroke hydraulic die holder according to claim 5, characterized in that, A second limiting groove (101b) is provided on the sliding seat (101), and a third limiting groove (202) is provided on the pressing plate (2). The second limiting groove (101b) communicates with the sliding track (101a), and the third limiting groove (202) communicates with the bottom of the pressing plate (2). The upper end of the second return spring (5) is installed in the third limiting groove (202), and the lower end is installed in the second limiting groove (101b).

7. A translational high-stroke hydraulic die clamp according to any one of claims 1, 2, 3, 5 or 6, characterized in that A T-shaped guide rail (103) is formed at the bottom of the main body (1).

8. A translational high-stroke hydraulic die clamp according to claim 7, characterized in that The power device (3) is an oil cylinder (301). The oil cylinder (301) includes a cylinder body (301a), a cylinder head (301b) and a piston rod (301c). The cylinder body (301a) is arranged on the pressing plate (2). The cylinder head (301b) covers the cylinder body (301a). The piston rod (301c) is slidably engaged with the inner cavity of the cylinder body (301a), and the piston rod (301c) penetrates downward through the pressing plate (2) and is connected to the main body (1). A first oil injection port (301d) and a second oil injection port (301e) are provided on the cylinder body (301a).

Images