CN211683593U - Hot-press forming machine - Google Patents

Abstract

The utility model discloses a hot-pressing molding machine. Through the design of a special vacuum cover structure, the air between the mold cavity and the product can be extracted under the premise that the left and right molds are not fully closed, and the airbag fixing plate does not seal the upper opening of the mold. , At the same time, the cloth capsule is cancelled, and the prepreg is attached to the pressurized air bag, which reduces the pressure loss and obtains a higher quality product.

Description

A hot press forming machine

technical field

The utility model relates to a composite material processing equipment, in particular to a hot pressing molding machine.

Background technique

Hot pressing is one of the commonly used methods in the processing industry. Because the mold cavity is closed during the molding process and completely isolated from the outside world, the degree of air removal between the product and the mold during the molding process has become one of the key factors affecting product quality. In the composite helmet industry, the traditional hot press molding process is to put the patch capsule into the mold cavity first, then close the mold, lower the compressed airbag in the shrinking state into the patch capsule and seal the upper plane of the mold. The mold cavity is completely closed and isolated from the atmosphere, and then the product is hot-pressed and shaped by injecting pressurized air into the pressurized air bag. In order to improve the product quality, some equipments have added the mold vacuum function. It can only be arranged at the waste edge of the product neck; due to the small gap between the sticking capsule, the composite prepreg and the inner wall of the mold cavity, it is relatively easy to extract the air at the waste edge of the neck, and it is difficult to remove the air from other parts. Therefore, the air extraction method of the existing hot-pressing molding machine is not effective, which makes the product prone to defects such as air bubbles, pinholes, and lack of glue, which affects the quality of the product.

Utility model content

The technical problem to be solved by the utility model is that a hot-pressing molding machine is required, which can better extract the air between the mold cavity and the product in the hot-pressing molding.

The solution of the utility model to solve the technical problem is as follows: a thermoforming machine, comprising a frame, on which a guide post is arranged along a horizontal direction, and a left and right The vacuum cover and the right vacuum cover, the left vacuum cover is connected with a left drive cylinder, the left drive cylinder drives the left vacuum cover to move back and forth along the length direction of the guide column, and the right side of the left vacuum cover is provided with a The left cavity, the top surface of the left vacuum cover is provided with a first opening, the first opening and the left cavity communicate with each other, the right vacuum cover is provided with a right drive cylinder, and the right drive cylinder drives The right vacuum cover moves back and forth along the length direction of the guide column, the left side of the right vacuum cover is provided with a right cavity, the top surface of the right vacuum cover is provided with a second opening, and the second opening is connected to the The right cavity is communicated with each other, and when the left vacuum cover and the right vacuum cover are in contact, the first opening and the second opening form an upper opening; the left cavity and the right cavity are arranged between There is a forming mold, a forming mold cavity is arranged in the forming mold, an airbag lifting cylinder and a cover plate lifting cylinder are arranged on the frame, and an airbag fixing device is arranged on the airbag lifting cylinder, and the bottom of the airbag fixing device is provided. An airbag is provided on the side, the airbag lifting cylinder drives the airbag fixing device to move up and down in the vertical direction, and when the airbag fixing device moves down to the end of the stroke, the airbag fixing device sends the airbag into the molding In the mold cavity; a sealing cover is arranged on the cover lifting cylinder, and the cover lifting cylinder drives the sealing cover to move up and down in the vertical direction. When the sealing cover moves down to the end of the stroke, the The sealing cover seals the upper opening.

As a further improvement of the above technical solution, the frame is provided with an auxiliary support seat, and the bottom sides of the left vacuum cover and the right vacuum cover are provided with a number of auxiliary support wheels, and the auxiliary support wheels are arranged on the auxiliary support The seat moves back and forth along the length of the guide post.

As a further improvement of the above technical solution, a height adjustment screw rod is connected to the frame, and the auxiliary support seat is used for height adjustment on the height adjustment screw rod.

As a further improvement of the above technical solution, the forming die includes a left die and a right die arranged along the length direction of the guide post, the left die is arranged in the left cavity, and the right die is arranged in the right cavity, The molding cavity is formed when the left mold and the right mold are closed. The frame is provided with a left mold clamping oil cylinder and a right mold clamping oil cylinder. The output end of the left mold clamping oil cylinder drives the left mold. Moving back and forth along the length direction of the guide post, the output end of the right mold clamping oil cylinder drives the right mold to move back and forth along the length direction of the guide post.

As a further improvement of the above technical solution, the left vacuum cover is provided with a left sealing bearing seat, the output end of the left mold clamping oil cylinder passes through the left sealing bearing seat, and the bottom of the left sealing bearing seat is provided with a left sealing bearing seat. Support guide wheel, the frame is provided with a left support seat, the left support guide wheel moves back and forth along the length direction of the guide column on the left support seat, and a right seal bearing is provided on the right vacuum cover The output end of the right clamping oil cylinder passes through the right sealing bearing seat, the bottom of the right sealing bearing seat is provided with a right supporting guide wheel, the frame is provided with a right supporting seat, the right supporting The guide wheel moves back and forth along the length direction of the guide column on the right support base.

As a further improvement of the above technical solution, the airbag fixing device includes an airbag fixing plate and a positioning frame arranged on the bottom surface of the airbag fixing plate, the outer side wall of the positioning frame is surrounded by a clamping groove, and the airbag is fastened to the In the card slot, there is no need to lock the airbag.

The beneficial effect of the utility model is: to provide a hot-pressing molding machine. Before working, the air bag with the prepreg is fastened on the air bag fixing plate of the air bag fixing device, and the air bag is in a free state before entering the mold for pressure. , the airbag descends into the molding cavity, the molding cavity performs the clamping action but does not close, the fractal surface is left with a distance of 10-20mm, and the airbag fixing plate is left with a distance of 10-20mm from the upper plane of the mold. The driving cylinder drives the left vacuum cover and the right vacuum cover to close each other respectively, the first opening and the second opening form an upper opening, the sealing cover is lowered to the upper opening position and the vacuum cover is in a sealed state, at this time, the vacuum cover is isolated from the atmosphere , but the mold has not been closed, the air in the vacuum cover can be exhausted by negative pressure, and then the mold is closed, the airbag fixing device is lowered into place and the molding cavity is closed, and the composite material is formed in the molding cavity by pressurizing the airbag cavity. After shaping, the airbag is contracted by negative pressure, the sealing cover is moved, the left vacuum cover and the right vacuum cover are separated and opened synchronously, the airbag fixing device is moved up, and the airbag in the contracted state moves upwards with the airbag fixing device out of the molding die. Open the molding cavity, take out the product, break the vacuum of the air bag, take off the air bag, and complete a production cycle. Therefore, by using the utility model, the use of the cloth capsule is cancelled, and the composite material is pasted on the pressurized air bag, which reduces the pressure loss. In addition, the air between the molding cavity and the product is completely removed before the molding die is not closed, which eliminates the possibility of bubbles, pinholes, and lack of glue in the product, and the product quality is more stable.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly describes the accompanying drawings that are used in the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, but not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings according to these drawings without creative work.

Fig. 1 is the structural representation when the left vacuum hood and the right vacuum hood of the present utility model are separated;

Fig. 2 is the structural schematic diagram when the left vacuum hood and the right vacuum hood of the present invention are in contact;

3 is a schematic structural diagram of the airbag fixing device of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure along the line A-A of FIG. 3 .

In the drawings: 1-frame, 2-left vacuum cover, 3-right vacuum cover, 4-airbag fixing device, 5-sealing cover plate, 6-auxiliary support seat, 7-auxiliary support wheel, 8-left mold, 9-right mold, 12-left seal bearing seat, 13-left support guide wheel, 14-right seal bearing seat, 15-right support guide wheel, 16-left support seat, 17-right support seat, 18-guide post.

Detailed ways

The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain other embodiments without creative work, All belong to the scope of protection of the present invention. In addition, all connection relationships mentioned in the text do not mean that the components are directly connected, but refer to a better connection structure that can be formed by adding or reducing connection accessories according to specific implementation conditions. Various technical features in the present invention can be combined interactively on the premise of not contradicting each other.

Referring to FIGS. 1 and 2 , a thermoforming machine includes a frame 1 , a guide post 18 is provided on the frame 1 along a horizontal direction, and a left vacuum is provided on the guide post 18 at intervals along the length direction of the guide post. The cover 2 and the right vacuum cover 3, the left vacuum cover 2 and the right vacuum cover 3 are respectively connected to the guide post 18 through the bearing seat, the left vacuum cover 2 is connected with a left driving cylinder, and the left driving cylinder drives the left The vacuum cover 2 moves back and forth along the length direction of the guide column 18 , a left cavity is provided on the right side of the left vacuum cover 2 , and a first opening is provided on the top surface of the left vacuum cover 2 . The left cavity is communicated with each other, the right vacuum cover 3 is provided with a right drive cylinder, and the right drive cylinder drives the right vacuum cover 3 to move back and forth along the length direction of the guide post 18 . The left side is provided with a right cavity, the top surface of the right vacuum cover 3 is provided with a second opening, the second opening communicates with the right cavity, the left vacuum cover 2 and the right vacuum cover 3 When they are in contact with each other, the first opening and the second opening form an upper opening; a molding die is arranged between the left cavity and the right cavity, and a molding cavity is arranged in the molding die, and the The frame 1 is provided with an airbag lifting cylinder and a cover plate lifting cylinder, an airbag fixing device 4 is arranged on the airbag lifting cylinder, an airbag is arranged on the bottom side of the airbag fixing device 4, and the airbag lifting cylinder drives the airbag The fixing device 4 moves up and down in the vertical direction. When the airbag fixing device 4 moves down to the end of the stroke, the airbag fixing device 4 sends the airbag into the molding cavity; A sealing cover 5 is provided, and the cover lifting cylinder drives the sealing cover 5 to move up and down in the vertical direction. When the sealing cover 5 moves down to the end of the stroke, the sealing cover 5 seals the Open up.

It can be seen from the above that a hot press molding machine is provided. Before working, the air bag with the prepreg is fastened on the air bag fixing plate of the air bag fixing device 4. The air bag is in a free state before entering the mold for pressure, and the air bag is lowered. To the molding cavity, the molding cavity performs the clamping action but does not close, the fractal surface is left with a distance of 10-20mm, and the airbag fixing plate is left with a distance of 10-20mm from the upper plane of the mold. Use the left driving cylinder and the right driving cylinder respectively Drive the left vacuum cover 2 and the right vacuum cover 3 to close each other, the first opening and the second opening form an upper opening, the sealing cover plate 5 is lowered to the upper opening position and the vacuum cover is in a sealed state, at this time, the vacuum cover is isolated from the atmosphere , but the mold has not been closed. At this time, the air in the vacuum cover can be exhausted by negative pressure, and then the mold is closed. The airbag fixing device 4 is lowered into place and the molding cavity is closed. After forming and shaping, the airbag is contracted by negative pressure, the sealing cover 5 is moved up, the left vacuum cover 2 and the right vacuum cover 3 are separated and opened synchronously, the airbag fixing device 4 is moved up, and the airbag in the contracted state is moved upwards out of the molding die , at this time, the molding cavity is opened, the product is taken out, the air bag breaks the vacuum, the air bag is removed, and a production cycle is completed. Therefore, the utility model eliminates the use of the cloth-applied capsule, and the composite material is pasted on the pressurized air bag. Pressure loss, and the air between the molding cavity and the product is completely evacuated before the molding die is not closed, which eliminates the possibility of bubbles, pinholes, and lack of glue in the product, and the product quality is more stable.

In order to improve the structural stability of the connection between the left drive cylinder and the right drive cylinder and the left vacuum cover 2 and the right vacuum cover 3 respectively, the frame 1 is provided with an auxiliary support seat 6 , and the left vacuum cover 2 and the right vacuum cover The bottom side of the cover 3 is provided with a number of auxiliary support wheels 7, the auxiliary support wheels 7 move back and forth along the length direction of the guide column on the auxiliary support base 6 to ensure the stable operation and reliable sealing of the vacuum cover.

In some embodiments, the frame 1 is provided with a height adjustment screw, the auxiliary support base 6 is adjusted in height on the height adjustment screw, and the height adjustment screw drives the auxiliary support base 6 along the It can be adjusted up and down in the direction perpendicular to the guide rail. The height adjustment screw is driven by electric drive, and the position of the auxiliary support base 6 can be adjusted to form a reliable support for the left vacuum cover 2 and the right vacuum cover 3.

In some embodiments, the forming mold includes a left mold 8 and a right mold 9 disposed along the length direction of the guide post 18 , the left mold 8 is disposed in the left cavity, and the right mold 9 is disposed in the right mold In the cavity, the molding cavity is formed when the left mold 8 and the right mold 9 are closed. The frame 1 is provided with a left mold clamping oil cylinder and a right mold clamping oil cylinder. The output of the left mold clamping oil cylinder is The end drives the left die 8 to move back and forth along the length direction of the guide post 18 , and the output end of the right clamping cylinder drives the right die 9 to move back and forth along the length direction of the guide post 18 . The left mold clamping cylinder and the right mold clamping cylinder are fixed on the frame 1, respectively connected to the left mold 8 and the right mold 9 through their output ends, namely the piston rod, and respectively drive the left mold 8 and the right mold 9 along the length of the guide column. directional movement.

In some embodiments, the left vacuum cover 2 is provided with a left sealing bearing seat 12 , the output end of the left mold clamping oil cylinder passes through the left sealing bearing seat 12 , and the bottom of the left sealing bearing seat 12 is provided There is a left support guide wheel 13, the frame 1 is provided with a left support base 16, the left support guide wheel 13 moves back and forth along the length direction of the guide column 18 on the left support base 16, the right support The vacuum cover 3 is provided with a right sealing bearing seat 14 , the output end of the right clamping oil cylinder passes through the right sealing bearing seat 14 , and a right supporting guide wheel 15 is arranged at the bottom of the right sealing bearing seat 14 . The frame 1 is provided with a right support base 17 , and the right support guide wheel 15 moves back and forth along the length direction of the guide column 18 on the right support base 17 . The output end of the left mold-clamping cylinder and the output end of the right mold-clamping cylinder pass through the left vacuum cover 2 and the right vacuum cover 3 respectively. The output end of the oil cylinder plays a supporting role, which makes the overall structure more stable. The left support guide wheel 13 and the right support guide wheel 15 also support the output end of the left mold clamping oil cylinder and the output end of the right mold clamping oil cylinder, which further improves the The stability of the overall structure.

In some embodiments, the airbag fixing device 4 includes an airbag fixing plate and a positioning frame arranged on the bottom surface of the airbag fixing plate. The outer side wall of the positioning frame is provided with a clamping groove. When the airbag is installed, it is only necessary to place the airbag The neck portion of the airbag can be snapped into the card slot and suspended, and no other pressing and fixing mechanism is needed to press and fix the airbag, and the disassembly and assembly are more convenient.

The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or variations without departing from the spirit of the present invention. Alternatives, these equivalent modifications or substitutions are all included within the scope defined by the claims of the present application.

Claims (6)

1. A thermoforming machine, characterized in that it comprises a frame (1), a guide post (18) is arranged on the frame (1) along a horizontal direction, and the guide post (18) is along the guide post A left vacuum cover (2) and a right vacuum cover (3) are arranged at intervals in the length direction, and a left drive cylinder is connected to the left vacuum cover (2), and the left drive cylinder drives the left vacuum cover (2) along the guide The length direction of the column (18) moves back and forth, the right side of the left vacuum cover (2) is provided with a left cavity, the top surface of the left vacuum cover (2) is provided with a first opening, and the first opening Connected with the left cavity, the right vacuum cover (3) is provided with a right drive cylinder, and the right drive cylinder drives the right vacuum cover (3) to move back and forth along the length direction of the guide column (18), The left side of the right vacuum cover (3) is provided with a right cavity, the top surface of the right vacuum cover (3) is provided with a second opening, and the second opening is communicated with the right cavity, so When the left vacuum cover (2) is in contact with the right vacuum cover (3), the first opening and the second opening form an upper opening; a molding is arranged between the left cavity and the right cavity A mold, a molding cavity is arranged in the molding die, an airbag lifting cylinder and a cover plate lifting cylinder are arranged on the frame (1), an airbag fixing device (4) is arranged on the airbag lifting cylinder, and the airbag An airbag is provided on the bottom side of the fixing device (4), the airbag lifting cylinder drives the airbag fixing device (4) to move up and down in the vertical direction, and when the airbag fixing device (4) moves down to the end of the stroke, all the The airbag fixing device (4) sends the airbag into the molding die cavity; a sealing cover plate (5) is arranged on the cover plate lifting cylinder, and the cover plate lifting cylinder drives the sealing cover plate (5). ) moves up and down in the vertical direction, when the sealing cover plate (5) moves down to the end of the stroke, the sealing cover plate (5) seals the upper opening. 2. A thermoforming machine according to claim 1, characterized in that: the frame (1) is provided with an auxiliary support seat (6), the left vacuum cover (2), the right vacuum cover ( 3) A plurality of auxiliary support wheels (7) are arranged on the bottom side, and the auxiliary support wheels (7) move back and forth along the length direction of the guide column on the auxiliary support base (6). 3. A thermoforming machine according to claim 2, characterized in that: the frame (1) is connected with a height-adjusting screw rod, and the auxiliary support seat (6) is on the height-adjusting screw rod Make height adjustments. 4. A thermoforming machine according to claim 1, characterized in that: the forming die comprises a left die (8) and a right die (9) arranged along the length direction of the guide post (18), the left die (9) The mould (8) is arranged in the left cavity, the right mould (9) is arranged in the right cavity, and the forming mould is formed when the left mould (8) and the right mould (9) are moulded together The frame (1) is provided with a left clamping cylinder and a right clamping cylinder, and the output end of the left clamping cylinder drives the left die (8) along the length of the guide post (18). Moving back and forth, the output end of the right mold clamping oil cylinder drives the right mold (9) to move back and forth along the length direction of the guide post (18). 5. A thermoforming machine according to claim 4, characterized in that: the left vacuum cover (2) is provided with a left sealing bearing seat (12), and the output end of the left clamping oil cylinder passes through The left sealing bearing seat (12), the bottom of the left sealing bearing seat (12) is provided with a left supporting guide wheel (13), the frame (1) is provided with a left supporting seat (16), the The left support guide wheel (13) moves back and forth along the length direction of the guide post (18) on the left support seat (16), and the right vacuum cover (3) is provided with a right seal bearing seat (14), The output end of the right clamping oil cylinder passes through the right sealing bearing seat (14), and the bottom of the right sealing bearing seat (14) is provided with a right supporting guide wheel (15). A right support base (17) is provided, and the right support guide wheel (15) moves back and forth along the length direction of the guide post (18) on the right support base (17). 6. A thermoforming machine according to claim 1, characterized in that: the airbag fixing device (4) comprises an airbag fixing plate and a positioning frame arranged on the bottom surface of the airbag fixing plate, and the positioning frame is The outer side wall is provided with a card slot around, and the airbag is buckled in the card slot.

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