CN110509529A - Thermoforming machine - Google Patents

Abstract

The invention discloses a hot press forming machine, which comprises a heating furnace and a hydraulic forming machine. The heating furnace is composed of an upper heating plate, a lower heating plate, a slide rail seat and a frame. The hydraulic forming machine includes a four-column hydraulic press and four guide columns installed on it. On the discharge base on the four-column hydraulic press, the slider and the bottom plate are respectively equipped with a female mold and a male mold. On the slide rail seat of the heating furnace and the discharge base of the hydraulic forming machine, there are slide rails and movable molds. The clamping frame that moves on the slide rail, under the action of the electric control system, the slide rail of the slide rail seat and the slide rail of the discharge base are docked, and the clamping frame can move between the hydraulic forming machine and the heating furnace. Clamp the sheet to be formed on the clamping frame and move it into the heating furnace. The heated and softened sheet is moved into the hydraulic forming machine along with the clamping frame. The female mold and the male mold are pressed against each other. . The invention has high production efficiency, low labor intensity and good molding quality.

Description

Thermoforming machine

technical field

The present invention relates to a shell forming equipment, especially a thermocompression forming equipment for forming a plastic composite sheet or a plastic sheet into a three-dimensional shell, such as forming a plastic composite sheet or a plastic sheet into a suitcase shell .

Background technique

Existing suitcase shells usually use a single-layer plastic sheet to form a suitcase shell through vacuum forming or injection molding, but both vacuum forming and injection molding cannot form plastic composite sheets. In addition, compared with plastic composite sheets, the suitcase shell formed by single-layer plastic sheet has poor toughness, is easy to be damaged due to impact during use, and has poor low temperature resistance. When used in a severe cold environment, the shell will become Brittle and easily broken.

However, the existing plastic composite sheet is usually formed into a suitcase shell by separate heating equipment and presses, that is, a hot air oven and a general-purpose four-column hydraulic press to complete the production process. Put it into a hot air oven to heat, after heating and softening, take it out of the oven manually, and then put it into the mold of the hydraulic press to start the hydraulic press to form. This configuration of equipment has low production efficiency and high labor intensity. The temperature cannot be accurately controlled, resulting in a high defect rate of the product. Since the standard four-column hydraulic press does not have a sheet clamping device suitable for the molding process, it also leads to a high defect rate of the product. Heating the plastic composite sheet with a hot air oven has a long heating time, The problem of low heating efficiency. Therefore, it is necessary to develop a thermoforming integrated thermoforming machine conforming to the thermoforming process.

Contents of the invention

In order to solve the deficiencies of the prior art, the present invention provides a hot press forming machine, which combines a heating furnace and a hydraulic forming machine into an integral device to improve production efficiency, reduce labor intensity, and reduce the defective rate of products.

In order to achieve the above object, the technical scheme adopted in the present invention is:

The hot press forming machine includes a heating furnace and a hydraulic forming machine arranged side by side. The heating furnace is composed of an upper heating plate, a lower heating plate, a slide rail seat and a frame. The upper heating plate, the lower heating plate and the slide rail seat can move up and down. The hydraulic forming machine includes a four-column hydraulic press and a discharge base. The slider and the bottom plate of the four-column hydraulic press are respectively equipped with a female mold and a male mold. The discharge base is installed on the four guides of the four-column hydraulic press. On the column and between the slider and the bottom plate of the four-column hydraulic press, slide rails are installed on the slide rail seat of the heating furnace and the discharge base of the hydraulic forming machine, and there are slide rails on the slide rails that can be moved on the slide rails. When the slide rail of the slide rail seat and the slide rail of the discharge base are docked, the clamping frame can move between the hydraulic forming machine and the heating furnace. When in use, clamp the sheet to be formed on the clamping frame and move it into the heating furnace. The heated and softened sheet is moved into the hydraulic forming machine along with the clamping frame. The female mold and the male mold are pressed against each other. After cooling and shaping, the shell is completed. Body shaping.

In the above-mentioned thermocompression molding machine, the upper heating plate, the lower heating plate and the slide rail seat are respectively fixed on the frame of the heating furnace through a cantilever structure that can move up and down.

The above-mentioned hot press molding machine, the cantilever structure that can move up and down includes a linear guide rail and a transmission mechanism, the upper heating plate is installed on the first linear guide rail, and the motor drives the first transmission mechanism to drive the upper heating plate on the first linear guide rail To move up and down, the lower heating plate is installed on the second linear guide rail, and the motor drives the second transmission mechanism to drive the lower heating plate to move up and down on the second linear guide rail, and the slide rail seat is installed on the third linear guide rail, driven by the motor The third transmission mechanism drives the slide rail seat to move up and down on the third linear guide rail.

In the above-mentioned hot press molding machine, the transmission mechanism of the cantilever structure is a ball screw transmission mechanism or a rack and pinion transmission mechanism.

In the above-mentioned thermocompression molding machine, the distance between the upper heating plate and the lower heating plate relative to the slide rail seat can be adjusted according to settings, so that different heating distances can be set according to different sheets to be formed.

In the above-mentioned thermocompression molding machine, the upper heating plate and the lower heating plate are assembled by a plurality of far-infrared radiation heating elements, and each far-infrared radiation heating element can be individually temperature-controlled.

In the above-mentioned thermocompression molding machine, the far-infrared radiation heating element can be selected from a far-infrared ceramic heating plate or a far-infrared quartz heating plate.

In the above-mentioned thermocompression forming machine, upper and lower double-layer slide rails are installed on the slide rail seat.

For the above-mentioned thermoforming machine, the discharging base is provided with four guide holes, which are installed in sliding fit with the four guide columns of the four-column hydraulic press, and the discharging base can move up and down along the four guiding columns; the four corners of the discharging base are installed There are four spring elements supported on the base of the four-column hydraulic press, and the discharge base relies on the spring elements to provide upward movement thrust; there is an adjusting nut on the outer cylinder of the spring element, through which the height of the discharge base when it moves upward and stops can be adjusted.

In the above-mentioned thermocompression forming machine, four push rods are installed at the four corners of the slider of the four-column hydraulic press. Move the male mold that is close to the bottom plate to improve the molding quality; when the slider moves up, the discharge base moves up under the action of the four spring elements, and the formed shell clamped by the clamping frame also follows. Move upward to break away from the male mold to achieve the function of automatic demoulding.

In the aforementioned thermocompression molding machine, the spring element may be a compression spring or a gas spring.

In the above-mentioned thermoforming machine, the clamping frame includes an upper clamping arm, a lower clamping frame and a bracket, the lower clamping frame is fixed on the bracket, the upper clamping arm is installed on the bracket through a rotating shaft, and the upper clamping arm is driven by a rotating shaft to realize opening and closing When closing, the material sheet is clamped, the bracket is provided with a hook, and the push-pull mechanism of the clamping frame is installed in the thermocompression forming machine, and the push-pull mechanism of the clamping frame pushes the clamping frame to move through the hook.

In the above-mentioned thermocompression molding machine, the clamping frame push-pull mechanism is installed on the fourth linear guide rail, and the motor drives the fourth transmission mechanism to drive the clamp frame push-pull mechanism to move left and right on the fourth linear guide rail.

In the above hot press forming machine, the fourth transmission mechanism is a ball screw transmission mechanism or a rack and pinion transmission mechanism.

In the above-mentioned thermocompression forming machine, the upper clamping arm and the lower clamping frame of the material clamping frame are both telescopically adjustable in size, so as to adapt to the clamping of sheets of different sizes.

In the above-mentioned thermoforming machine, two clamping frames are placed on the three pairs of slide rails of the discharge base and the slide rail seat, so that when one sheet is formed by the hydroforming machine, the other sheet can be continuously Heat in a furnace.

The above-mentioned hot press molding machine also adds a feeding table on the side of the heating furnace. The feeding table, the heating furnace and the hydraulic forming machine are arranged in a line. Clamping frame that can be moved on slide rails.

After adopting the above scheme, the beneficial effects of the present invention are:

The hot press forming machine of the present invention is an integrated heating and forming device, which avoids manually moving the sheet between the heating furnace and the hydraulic forming machine, reduces labor intensity, improves production efficiency, and improves product quality.

The clamping frame of the hot pressing forming machine of the present invention can be steplessly adjusted in size to adapt to different sheet sizes, the production is convenient, and the cost of matching the clamping frames of different specifications for sheets of different sizes is avoided.

The feeding base of the hot pressing forming machine of the present invention cooperates with the action of the hydraulic forming machine, which improves the quality of the formed product, and automatically removes the mold, reducing the labor intensity of operators.

The upper heating plate, the lower heating plate and the slide rail seat of the hot pressing forming machine of the present invention can move up and down, and the upper and lower heating plates can set appropriate heating distances according to different sheets to be formed, thereby improving the forming quality.

The hot pressing forming machine of the present invention adopts far-infrared radiation heating elements to heat the sheet to be formed, and has high heating efficiency and fast heating speed.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

FIG. 1 is a perspective view of Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of the arrangement of the third linear guide rail in Embodiment 1 of the present invention;

Fig. 3 is a schematic structural view of the clamping frame of Embodiment 1 of the present invention;

Fig. 4 is a bottom view of the clamping frame structure of Embodiment 1 of the present invention;

Fig. 5 is a schematic perspective view of Embodiment 2 of the present invention.

In the figure: 1. Heating furnace, 2. Hydraulic forming machine, 3. Upper heating plate, 4. Lower heating plate, 5. Slide rail seat, 6. Rack, 7. Four-column hydraulic press, 8. Feeding base, 9 .Slider, 10. Bottom plate, 11. Female mold, 12. Male mold, 13. The first clamping frame, 14. The first slide rail, 15. The second slide rail, 16. The first linear guide rail, 17. The first transmission mechanism, 18. The second linear guide rail, 19. The second transmission mechanism, 20. The third linear guide rail, 21. The third transmission mechanism, 22. The far-infrared radiation heating element, 23. The third slide rail, 24. Guide column, 25. spring element, 26. hook, 27. adjusting nut, 28. upper clamping arm, 29. lower clamping frame, 30. bracket, 31. fourth slide rail, 32. second clamping frame, 33. Feeding table, 34. push-pull mechanism of material clamping frame, 35. push rod, 36. fourth linear guide rail, 37. fourth transmission mechanism.

Detailed ways

[Example 1]

A double-station thermoforming machine, as shown in Figures 1 and 2, includes a heating furnace 1 and a hydraulic forming machine 2 arranged side by side. The heating furnace consists of an upper heating plate 3, a lower heating plate 4, a slide rail seat 5 and a frame 6 components, the upper heating plate 3, the lower heating plate 4 and the slide rail seat 5 are fixed on the frame 6 in a manner that can move up and down. In this embodiment, the hydroforming machine 2 is on the right side of the heating furnace 1. The hydroforming machine includes four columns The hydraulic press 7 and the discharge base 8, the slider 9 and the base plate 10 of the four-column hydraulic press 7 are respectively equipped with a female mold 11 and a male mold 12, and the discharge base 8 is installed on four guide columns 24 of the four-column hydraulic press 7, And the discharge base 8 is located between the slide block 9 and the base plate 10 of the four-column hydraulic press 7, and slide rails are installed on the slide rail seat 5 of the heating furnace 1 and the discharge base 8 of the hydroforming machine 2 (as shown in the following The first slide rail 14, the second slide rail 15 and the third slide rail 23), the slide rail is provided with the first clamping frame 13 that can be moved on the slide rail, the first slide rail of the slide rail seat 5 14 or when the third slide rail 23 is docked with the slide rail 15 of the discharge base 8, the first clamping frame 13 can move between the hydroforming machine 2 and the heating furnace 1. During use, the sheet to be formed is put into the first clamping frame 13 on the discharge base 8, and clamped on the first clamping frame 13, then moved into the heating furnace 1, and the softened sheet is heated again. As the first clamping frame 13 is moved out into the hydroforming machine 2, the female mold 11 and the male mold 12 are pressed against each other, and the molding of the shell is completed after cooling and shaping.

The upper heating plate 3, the lower heating plate 4 and the slide rail seat 5 are respectively fixed on the frame 6 of the heating furnace through a cantilever structure that can move up and down.

The cantilever structure that can move up and down includes a linear guide rail and a transmission mechanism. Specifically, the upper heating plate 3 is installed on the first linear guide rail 16, and the first transmission mechanism 17 is driven by a motor (common components, not shown in the figure) to drive The upper heating plate 3 moves up and down on the first linear guide rail 16, the lower heating plate 4 is installed on the second linear guide rail 18, and the second transmission mechanism 19 is driven by a motor (common components, not shown in the figure) to drive the lower heating plate 4. The heating plate 4 moves up and down on the second linear guide rail 18, and the slide rail seat 5 is installed on the third linear guide rail 20, and the third transmission mechanism 21 is driven by a motor (common components, not shown in the figure) to drive the slide rail seat 5 move up and down on the third linear guide rail 20. The transmission mechanism of the cantilever structure can choose a ball screw transmission mechanism or a rack and pinion transmission mechanism.

The distance between the upper heating plate 3 and the lower heating plate 4 relative to the first slide rail 14 on the slide rail seat 5 can be automatically adjusted according to the setting. Different heating distances can be set according to different sheets to be formed.

The upper heating plate 3 and the lower heating plate 4 are assembled by a plurality of far-infrared radiation heating elements 22, and each far-infrared radiation heating element 22 can be individually temperature-controlled.

The far-infrared radiation heating element 22 can be selected from a far-infrared ceramic heating plate or a far-infrared quartz heating plate.

The slide rail seat 5 is equipped with upper and lower double-layer slide rails, the upper floor is the first slide rail 14, and the bottom floor is the third slide rail 23.

The discharge base 8 is provided with four guide holes, and is installed in sliding fit with four guide posts 24 of the four-column hydraulic press 7, and the discharge base 8 can move up and down along the four guide posts 24. The four corners of the discharge base 8 are provided with four spring elements 25 supported on the base 10 of the four-column hydraulic press 7 , and the discharge base 8 relies on the spring elements 25 to provide upward moving thrust. An adjusting nut 27 is arranged on the outer cylinder of the spring element 25, and the height when the discharging base 8 moves upward and stops can be adjusted by the adjusting nut 27. The spring element 25 can be a compression spring or a gas spring.

Four push rods 35 are installed at the four corners of the slide block 9 of the four-column hydraulic press 7. When the slide block 9 is pressed down, the push rods 35 push the discharge base 8 to move downward, so that the first clamping material on the discharge base 8 The sheet in the frame 13 also moves downward until the sheet is close to the male mold 12 on the bottom plate 10 of the four-column hydraulic press 7, so as to improve the molding quality. Move upwards under the action of the element 25, and the molded shell clamped by the first clamping frame 13 on the discharge base 8 also moves upwards thereupon and breaks away from the male mold 12, so as to achieve the effect of automatic demoulding.

Two first clamping frames 13 can be placed on the second slide rail 15 of the discharge base 8 and the first slide rail 14 and the third slide rail 23 of the slide rail seat 5, so that a sheet can be placed on the hydroforming machine. 2 While forming, another sheet can be continuously heated in the heating furnace 1, which greatly improves the efficiency.

The first clamping frame 13 , see FIG. 3 and FIG. 4 , includes an upper clamping arm 28 , a lower clamping frame 29 and a bracket 30 . The lower clamping frame 29 is fixed on the support 30, the upper clamping arm 28 is installed on the support 30 through the rotating shaft, and the upper clamping arm 28 is driven by the rotating shaft to realize opening and closing. When closing, the material sheet is clamped, and the support 30 is provided with a hook 26 1. A clamping frame push-pull mechanism 34 is installed in the thermocompression molding machine, and the clamping frame push-pull mechanism 34 pushes the first clamping frame 13 to move through the hook 26 . Specifically, the clamping frame push-pull mechanism 34 is installed on the fourth linear guide rail 36 , and the motor drives the fourth transmission mechanism 37 to drive the clamping frame push-pull mechanism 34 to move left and right on the fourth linear guide rail 36 . The fourth transmission mechanism 37 is a ball screw transmission mechanism or a rack and pinion transmission mechanism.

Both the upper clamping arm 28 and the lower clamping frame 29 of the first material clamping frame 13 can be telescopically adjusted in size, so as to adapt to the clamping of sheets of different sizes.

The present invention combines the heating furnace 1 and the hydraulic molding machine 2 into an integral device, and is provided with a feeding base 8 and a first clamping frame 13. The heating furnace 1 uses a far-infrared radiation heater 22 as a heating element, which can cooperate with the control system , the plastic composite sheet to be formed is automatically moved into the heating furnace 1 for heating, and then automatically moved into the hydraulic forming machine 2, and the female mold 11 and the male mold 12 are automatically started to pressurize the mold to complete the molding of the sheet. After molding, it passes through the four-column hydraulic press 7. The discharge base 8 and the first clamping frame 13 act in conjunction, and the formed shell is automatically released from the mold. The invention is also applicable to thermocompression forming of plastic sheets.

[Example 2]

A three-station thermocompression molding machine, as shown in Figure 5, the main structure, principle and function of this embodiment are the same as those of Embodiment 1, and will not be repeated here. The difference is that, compared with Embodiment 1, this embodiment For example, a feeding table 33 is added on the left side of the heating furnace 1 as shown in Fig. 5, and the feeding table 33, the heating furnace 1, and the hydraulic forming machine 2 are arranged in a line. Specifically, the feeding platform 33 is provided with a pair of fourth slide rails 31 , and the second clamping frame 32 is installed on the fourth slide rails 31 . Put the sheet to be formed into the second clamping frame 32 on the fourth slide rail 31, and clamp it on the second clamping frame 32 and move it into the heating furnace 1, and put the first clamping material on the hydroforming machine 2 The frame 13 is moved into the third slide rail 23 of the lower floor of the slide rail seat 5, and the heated and softened sheet is moved out to the hydroforming machine 2 along with the second clamping frame 32. Complete the molding of the shell.

This embodiment is more convenient to be applied to an automatic assembly line, especially it can cooperate with a feeding manipulator and a material unloading manipulator to form a fully automatic unmanned hot pressing forming machine.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (10)

1. heat pressing forming machines, it is characterised in that: including heating furnace and hydraulic forming machine arranged side by side, heating furnace is by upper heating Plate, lower heating plate, slide track seat and rack composition, upper heating plate, lower heating plate and slide track seat are fixed in a manner of moving up and down On the rack, hydraulic forming machine includes four-column hydraulic press and blowing pedestal, is installed respectively on the sliding block and bottom plate of four-column hydraulic press There are former and formpiston, blowing pedestal is mounted on sliding block and the bottom on four guide posts of four-column hydraulic press and being located at four-column hydraulic press Between plate, on the slide track seat of heating furnace and it is respectively arranged with sliding rail on the blowing pedestal of hydraulic forming machine, being equipped on the slide rail can be The material folding frame elapsed on sliding rail, when the sliding rail of slide track seat and the sliding rail of blowing pedestal dock, material folding frame can be in hydro-forming It is moved between machine and heating furnace.

2. heat pressing forming machines according to claim 1, it is characterised in that: the upper heating plate, lower heating plate and slide track seat It is fixed in the rack of heating furnace by cantilever design moving up and down respectively.

3. heat pressing forming machines according to claim 2, it is characterised in that: the cantilever design moving up and down includes straight Line guide rail and transmission mechanism, upper heating plate are mounted on first straight line guide rail, are driven by the first transmission mechanism of motor driven Heating plate moves up and down on first straight line guide rail, and lower heating plate is mounted on second straight line guide rail, passes through motor driven Two transmission mechanisms drive lower heating plate to move up and down on second straight line guide rail, and slide track seat is mounted in third linear guide, Slide track seat is driven to move up and down in third linear guide by motor driven third transmission mechanism；Preferably, the cantilever The transmission mechanism of structure is ball-screw transmission mechanism or rack and pinion drive mechanism.

4. heat pressing forming machines according to claim 1, it is characterised in that: the upper heating plate and lower heating plate are remote by multi-disc Infra-red radiation heater element is assembled, can independent temperature control per a piece of Far-infrared radiation heating element, it is preferred that the far infrared Radiant heating element uses far-infrared ceramic heating board or far infrared quartz heating board.

5. heat pressing forming machines according to claim 1, it is characterised in that: be installed on the slide track seat upper and lower double-deck sliding Rail, it is preferred that be placed with two material folding frames altogether on three pairs of sliding rails of the blowing pedestal and slide track seat.

6. heat pressing forming machines according to claim 1, it is characterised in that: the blowing pedestal is set there are four pilot hole, with Four guide posts of four-column hydraulic press are slidably installed, and blowing pedestal can be moved up and down along four guide posts；Blowing pedestal quadrangle dress If being supported on four-column hydraulic press pedestal there are four spring element, blowing pedestal is pushed away by what spring element offer moved up Power；There is adjusting nut on spring element outer cylinder, height when blowing pedestal moves up stopping is adjusted by adjusting nut.

7. heat pressing forming machines according to claim 6, it is characterised in that: the sliding block quadrangle of the four-column hydraulic press is equipped with Four push rods.

8. heat pressing forming machines according to claim 1, it is characterised in that: the material folding frame include upper clip arm, lower folder frame and Bracket, lower folder frame are fixed on bracket, and upper clip arm is rack-mount by shaft, and upper clip arm is simultaneously beaten by shaft driving realization Open and close are closed, fastening material sheet material when closure, and bracket is equipped with hook, installation folder material frame push-pull mechanism in heat pressing forming machines, folder It is dynamic that material frame push-pull mechanism by hook pushes material folding to frame shift, it is preferred that the upper clip arm of the material folding frame and lower folder frame are that can stretch Contract sized structure.

9. heat pressing forming machines according to claim 8, it is characterised in that: it is straight that the material folding frame push-pull mechanism is mounted on the 4th On line guide rail, drives material folding frame push-pull mechanism to do left and right in the 4th linear guide by the 4th transmission mechanism of motor driven and move It is dynamic, it is preferred that the 4th transmission mechanism is ball-screw transmission mechanism or rack and pinion drive mechanism.

10. heat pressing forming machines according to claim 1, it is characterised in that: the heating furnace side also adds on one Expect that platform, feeding platform, heating furnace and hydraulic forming machine arrange that feeding platform is equipped with a pair of of sliding rail in a word, on the slide rail equipped with can be The material folding frame elapsed on sliding rail.