A locking device for a vacuum hot press forming machine

Abstract

The utility model discloses a locking device of vacuum hot press forming machine, including four guide bushings, two the guide bushings symmetrical fixed mounting in the bottom of the upper heating station of vacuum hot press forming machine, and another two the guide bushings symmetrical fixed mounting in the top of the lower heating station of vacuum hot press forming machine, the utility model discloses set up wedge strip, isosceles trapezoidal block, wedge block, bidirectional screw rod etc, only need to rotate bidirectional screw rod, can drive wedge strip to move to the guide bushing outside to utilize the cooperation of slope and slope surface to exert a vertical direction's component force to lower mould and upper mould, to press the lower mould tightly on the lower heating station, press the upper mould tightly on the upper heating station, realize the fixation to mould, through the setting of tension spring, when rotating bidirectional screw rod to make two wedge blocks away from each other, wedge strip and isosceles trapezoidal block will move to the guide bushing under the action of tension spring to make wedge block away from corresponding mould, thereby convenient to release mould.

Description

Technical Field

[0001] This utility model relates to the field of hot press molding machine technology, specifically a mold clamping device for a vacuum hot press molding machine. Background Technology

[0002] Vacuum hot press forming machine is a device that uses heating to soften materials, combined with vacuum adsorption and pressure, to press the materials into workpieces of a specific shape. It is mainly used in plastic processing, composite material molding, and electronics and precision manufacturing.

[0003] Currently, most vacuum hot press molding machines use a large number of bolts to fasten the lower and upper molds to the lower and upper heating platforms, making the disassembly and assembly process cumbersome and inconvenient for mold replacement. Therefore, we propose a mold locking device for vacuum hot press molding machines. Utility Model Content

[0004] The purpose of this invention is to provide a mold-locking device for a vacuum hot press molding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mold-locking device for a vacuum hot press forming machine includes four guide sleeves. Two of the guide sleeves are symmetrically fixedly installed on the bottom of the upper heating platform of the vacuum hot press forming machine, and the other two guide sleeves are symmetrically fixedly installed on the top of the lower heating platform of the vacuum hot press forming machine. A lower mold is provided on the top surface of the lower heating platform, and an upper mold is provided on the bottom surface of the upper heating platform. The lower mold and the upper mold are located between two corresponding guide sleeves. Multiple positioning pins are fixedly installed on the top of the lower heating platform and the bottom of the upper heating platform. Positioning holes are opened on the bottom surface of the lower mold and the top surface of the upper mold. The positioning pins are located in the corresponding positioning holes. Both ends of the lower mold and the upper mold are machined with bevels. The open end of the guide sleeve faces the corresponding bevel, and a wedge-shaped strip is slidably installed through the opening of the guide sleeve. A driving mechanism for driving the wedge-shaped strip is installed inside the guide sleeve, and the inclined surface of the wedge-shaped strip fits against the corresponding bevel.

[0007] As a further embodiment of this utility model: the driving mechanism includes a bidirectional screw rod rotatably installed inside the guide sleeve. After the front end of the bidirectional screw rod passes through the guide sleeve, a bolt head is fixedly installed. Two wedge blocks are symmetrically arranged inside the guide sleeve. The wedge blocks are fitted onto the bidirectional screw rod through threaded holes. An isosceles trapezoidal block is fixedly installed on the outer wall of the wedge strip inside the guide sleeve. The two wedge blocks are symmetrically distributed on both sides of the isosceles trapezoidal block.

[0008] As a further embodiment of this utility model: a tension spring is connected to the outer wall of the wedge-shaped strip located inside the guide sleeve, and the end of the tension spring away from the wedge-shaped strip is connected to the inner wall of the guide sleeve.

[0009] As a further embodiment of this utility model: the isosceles trapezoidal block has a groove at one end facing the bidirectional screw, and the groove width is greater than the outer diameter of the bidirectional screw.

[0010] As a further embodiment of this utility model: a guide bar is fixedly installed on the inner wall of the guide sleeve, and a guide groove is opened on the outer wall of the wedge block at the corresponding position of the guide bar, and the guide groove is adapted to the guide bar.

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

[0012] This invention utilizes a wedge-shaped strip, an isosceles trapezoidal block, a wedge block, and a bidirectional screw. Simply rotating the bidirectional screw drives the wedge-shaped strip to move outwards towards the guide sleeve. This, combined with the inclined plane and slope, applies a vertical force to the lower and upper molds, pressing the lower mold firmly onto the lower heating platform and the upper mold firmly onto the upper heating platform, thus securing the molds. A tension spring is also included; as the wedge-shaped strip moves outwards towards the guide sleeve, it stretches. When the bidirectional screw is rotated to move the two wedge blocks away from each other, the wedge-shaped strip and the isosceles trapezoidal block move inwards towards the guide sleeve under the action of the tension spring, moving the wedge blocks away from their corresponding molds, thus facilitating the release of the molds. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the clamping device of a vacuum hot press molding machine.

[0014] Figure 2 This is a schematic diagram of the internal structure of the guide sleeve in the mold-locking device of a vacuum hot press molding machine.

[0015] Figure 3 for Figure 2 A sectional view.

[0016] Among them, the lower heating platform 1, the upper heating platform 2, the positioning pin 3, the lower mold 4, the upper mold 5, the positioning hole 6, the guide sleeve 7, the bidirectional screw 8, the bolt head 9, the wedge block 10, the guide groove 11, the guide strip 12, the wedge strip 13, the isosceles trapezoidal block 14, the groove 15, the tension spring 16, and the slope 17. Detailed Implementation

[0017] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0019] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation in the specification, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0021] Please see Figures 1-3 In this embodiment of the present invention, a mold-locking device for a vacuum hot press forming machine includes four guide sleeves 7. Two of the guide sleeves 7 are symmetrically fixedly installed at the bottom of the upper heating platform 2 of the vacuum hot press forming machine, and the other two guide sleeves 7 are symmetrically fixedly installed at the top of the lower heating platform 1 of the vacuum hot press forming machine. A lower mold 4 is provided on the top surface of the lower heating platform 1, and an upper mold 5 is provided on the bottom surface of the upper heating platform 2. The lower mold 4 and the upper mold 5 are located between two corresponding guide sleeves 7. The top of the lower heating platform 1 and the upper heating platform 2 are connected. Multiple positioning pins 3 are fixedly installed at the bottom of the platform 2. Positioning holes 6 are opened on the bottom surface of the lower mold 4 and the top surface of the upper mold 5. The positioning pins 3 are located in the corresponding positioning holes 6. Both ends of the lower mold 4 and the upper mold 5 are machined with slopes 17. The open end of the guide sleeve 7 faces the corresponding slope 17, and a wedge strip 13 is slidably installed through the opening of the guide sleeve 7. A driving mechanism for driving the wedge strip 13 is installed inside the guide sleeve 7. The inclined surface of the wedge strip 13 fits against the corresponding slope 17.

[0022] By adopting the above-mentioned scheme, this utility model allows for the following operation: the lower mold 4 and upper mold 5 in their closed state are placed on the lower heating platform 1, and the vacuum hot press forming machine is started to bring the lower heating platform 1 and the upper heating platform 2 closer together until the upper heating platform 2 presses against the upper mold 5. Each positioning pin 3 is then inserted into its corresponding positioning hole 6. Subsequently, each linear drive mechanism is operated to drive the wedge strip 13 to extend beyond the guide sleeve 7, so that the inclined surface of the wedge strip 13 presses against the corresponding slope 17. This utilizes the cooperation between the inclined surface and the slope 17 to apply a vertical force to the lower mold 4 and the upper mold 5, thus pressing the lower mold 4 against the lower heating platform 1 and the upper mold 5 against the upper heating platform 2. The operation is simple and convenient.

[0023] Specific combination Figure 1-3 In one embodiment of this utility model, the driving mechanism includes a bidirectional screw 8 rotatably installed inside the guide sleeve 7. The front end of the bidirectional screw 8 passes through the guide sleeve 7 and is fixedly installed with a bolt head 9. Two wedge blocks 10 are symmetrically arranged inside the guide sleeve 7. The wedge blocks 10 are fitted onto the bidirectional screw 8 through threaded holes. An isosceles trapezoidal block 14 is fixedly installed on the outer wall of the wedge strip 13 inside the guide sleeve 7. The two wedge blocks 10 are symmetrically distributed on both sides of the isosceles trapezoidal block 14.

[0024] By rotating the double-acting screw 8 through the bolt head 9, the two wedge blocks 10 can be driven to move in opposite directions simultaneously by the engagement of the double-acting screw 8 with the threaded hole on the wedge block 10. When the two wedge blocks 10 approach each other, the inclined surface on the wedge block 10 will fit with the inclined surface on the isosceles trapezoid block 14, thereby pushing the isosceles trapezoid block 14 and the wedge strip 13 to slide outwards towards the guide sleeve 7. The operation is simple and convenient.

[0025] Specific combination Figure 2 Furthermore, based on the previous embodiment, the outer wall of the wedge-shaped strip 13 located inside the guide sleeve 7 is connected to a tension spring 16, and the end of the tension spring 16 away from the wedge-shaped strip 13 is connected to the inner wall of the guide sleeve 7.

[0026] With the tension spring 16 in place, when the wedge strip 13 moves outward from the guide sleeve 7, it will stretch the tension spring 16. When the bidirectional screw 8 is rotated to make the two wedge blocks 10 move away from each other, the wedge strip 13 and the isosceles trapezoidal block 14 will move inward from the guide sleeve 7 under the action of the tension spring 16, so that the wedge block 10 moves away from the corresponding mold, thereby facilitating the release of the mold.

[0027] Specific combination Figure 1 and Figure 3 In one embodiment of the present invention, the isosceles trapezoidal block 14 has a groove 15 at one end facing the bidirectional screw 8, and the groove width of the groove 15 is greater than the outer diameter of the bidirectional screw 8.

[0028] By setting the groove 15, interference can be avoided between the bidirectional screw 8 and the movement of the isosceles trapezoidal block 14 within the guide sleeve 7, thus making the internal structure of the guide sleeve 7 more compact.

[0029] Specific combination Figure 1-3 In one embodiment of the present invention, a guide strip 12 is fixedly installed on the inner wall of the guide sleeve 7, and a guide groove 11 is provided on the outer wall of the wedge block 10 at the corresponding position of the guide strip 12, and the guide groove 11 is adapted to the guide strip 12.

[0030] The cooperation between the guide bar 12 and the guide groove 11 can effectively improve the stability of the wedge block 10 moving within the guide sleeve 7.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mold-locking device for a vacuum hot press molding machine, characterized in that: The system includes four guide sleeves (7). Two of the guide sleeves (7) are symmetrically fixedly installed at the bottom of the upper heating platform (2) of the vacuum hot press forming machine, and the other two guide sleeves (7) are symmetrically fixedly installed at the top of the lower heating platform (1) of the vacuum hot press forming machine. A lower mold (4) is provided on the top surface of the lower heating platform (1), and an upper mold (5) is provided on the bottom surface of the upper heating platform (2). The lower mold (4) and the upper mold (5) are located between two corresponding guide sleeves (7). Multiple positioning pins are fixedly installed on the top of the lower heating platform (1) and the bottom of the upper heating platform (2). (3) The bottom surface of the lower mold (4) and the top surface of the upper mold (5) are provided with positioning holes (6). The positioning pin (3) is located in the corresponding positioning hole (6). Both ends of the lower mold (4) and the upper mold (5) are machined with slopes (17). The opening end of the guide sleeve (7) faces the corresponding slope (17). A wedge strip (13) is slidably installed at the opening of the guide sleeve (7). A driving mechanism for driving the wedge strip (13) is installed in the guide sleeve (7). The inclined surface of the wedge strip (13) is in contact with the corresponding slope (17).

2. The mold-locking device of a vacuum hot press forming machine according to claim 1, characterized in that: The driving mechanism includes a bidirectional screw (8) rotatably installed in the guide sleeve (7). The front end of the bidirectional screw (8) passes through the guide sleeve (7) and is fixedly installed with a bolt head (9). Two wedge blocks (10) are symmetrically arranged inside the guide sleeve (7). The wedge blocks (10) are fitted onto the bidirectional screw (8) through threaded holes. An isosceles trapezoidal block (14) is fixedly installed on the outer wall of the wedge strip (13) inside the guide sleeve (7). The two wedge blocks (10) are symmetrically distributed on both sides of the isosceles trapezoidal block (14).

3. The mold-locking device of a vacuum hot press forming machine according to claim 2, characterized in that: The outer wall of the wedge-shaped strip (13) located inside the guide sleeve (7) is connected to a tension spring (16), and the end of the tension spring (16) away from the wedge-shaped strip (13) is connected to the inner wall of the guide sleeve (7).

4. The mold-locking device of a vacuum hot press forming machine according to claim 2, characterized in that: The isosceles trapezoidal block (14) has a groove (15) at one end facing the bidirectional screw (8), and the groove width of the groove (15) is greater than the outer diameter of the bidirectional screw (8).

5. The mold-locking device of a vacuum hot press forming machine according to claim 2, characterized in that: The inner wall of the guide sleeve (7) is fixedly installed with a guide bar (12), and the outer wall of the wedge block (10) is provided with a guide groove (11) corresponding to the guide bar (12), and the guide groove (11) is adapted to the guide bar (12).

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