Thermal forming equipment

Abstract

The utility model relates to the technical field of thermoforming machines, and discloses a thermoforming device which comprises a base, a heating mechanism and a pressing mechanism, the heating mechanism comprises a frame body and a driving threaded rod, the lower end of the frame body is fixedly connected with the base, and a sliding groove is formed in the rear end of the middle of the upper end of the base. And the front end of the driving threaded rod is rotationally connected with the inner wall of the front end of the sliding groove, the downward pressing mechanism comprises a downward pressing block and four guide rods, the upper ends and the lower ends of the guide rods are fixedly connected with the base and the frame body correspondingly, and connecting mechanisms are arranged in the base and the downward pressing block correspondingly. According to the mold fixing device, the first connecting block and the second connecting block in the connecting mechanism are in sliding connection with the first connecting groove and the second connecting groove, the first connecting block and the second connecting block are connected in a clamped mode in cooperation with the clamping block, the mold is limited, and the movable threaded rod is used for driving the movable block; and the clamping block releases the clamping state of the first connecting block and the second connecting block, so that the mold is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of thermoforming machines, in particular to a thermoforming device. Background Art

[0002] Thermoforming equipment is a type of processing equipment that heats plastic sheets at high temperatures to make them plastic, then uses vacuum adsorption, air pressure blowing or mechanical pressure to make the softened plastic sheets adhere to the mold surface, and finally cools and shapes them into a variety of plastic products such as trays and cup lids. It is widely used in packaging, automobiles, home appliances and other fields.

[0003] However, since the plastic products required to be produced in the workshop at different times are different, different molds need to be replaced. However, most of the existing thermoforming equipment on the market is not convenient for disassembling and installing molds, which makes the mold replacement operation more difficult and increases the time for preliminary preparation work.

[0004] Therefore, those skilled in the art provide a thermoforming device to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present utility model is to solve the shortcomings of the prior art and provide a thermoforming equipment, in which the first connecting block and the second connecting block in the connecting mechanism are slidably connected to the first connecting groove and the second connecting groove, and the first connecting block and the second connecting block are clamped and connected with the clamping block to restrict the mold, and the movable threaded rod is used to drive the movable block so that the clamping block releases the clamping state of the first connecting block and the second connecting block, thereby facilitating the disassembly and assembly of the mold.

[0006] To achieve the above-mentioned purpose, the utility model provides a thermoforming device, comprising a base, a heating mechanism and a pressing mechanism, the heating mechanism comprising a frame and a driving threaded rod, the lower end of the frame being fixedly connected to the base, a slide groove being provided at the rear end of the middle portion of the upper end of the base, the front end of the driving threaded rod being rotatably connected to the inner wall of the front end of the slide groove, the pressing mechanism comprising a pressing block and four guide rods, the upper and lower ends of the guide rods being fixedly connected to the base and the frame respectively, and a connecting mechanism being provided inside the base and the pressing block;

[0007] The connecting mechanism includes a static mold, a dynamic mold, four gears, two movable threaded rods and four clamping blocks, and the two sides of the lower end of the static mold and the two sides of the upper end of the dynamic mold are respectively provided with a first connecting groove and a second connecting groove, and the two sides of the front end of the upper end of the base and the two sides of the lower end of the lower pressing block are respectively fixedly connected with the first connecting block and the second connecting block, and the first connecting block and the second connecting block are respectively slidably connected to the first connecting groove and the second connecting groove, and the front ends of the two sides of the upper end of the base and the two sides of the front end of the lower pressing block are provided with rotating grooves;

[0008] The lower ends of the upper clamping blocks all penetrate the lower pressing block and are clamped and connected to the second connecting block, and the upper ends of the lower clamping blocks all penetrate the base and are clamped and connected to the first connecting block, and the front end of the middle part of the upper end of the base and the middle part of the front end of the lower pressing block are both provided with a moving groove, and the outer wall of the movable threaded rod body is threadedly connected to the moving block, and the outer wall of the rear end of the clamping block and the two sides of the lower end of the moving block are respectively fixedly connected to the first rack and the second rack, and the first rack and the second rack are both meshed with the gear;

[0009] Through the above technical solution, the first connecting block and the second connecting block are slidably connected with the first connecting groove and the second connecting groove, and the first connecting block and the second connecting block are clamped and connected with the clamping block to restrict the mold, and the movable threaded rod is used to drive the movable block to move, and the first rack and the second rack are engaged with the gear to release the clamping block from the first connecting block and the second connecting block, thereby facilitating the disassembly and assembly of the mold.

[0010] Furthermore, a servo motor is provided on the inner wall of the rear end of the chute, and the output shaft of the servo motor is fixedly connected to the driving threaded rod;

[0011] Through the above technical solution, the servo motor arranged inside the slide groove provides source power for the rotation of the driving threaded rod, allowing the driving threaded rod to rotate quickly inside the slide groove.

[0012] Furthermore, the outer wall of the driving threaded rod is threadedly connected to a support block, the support block slides inside the slide groove, and the upper end of the support block is fixedly connected to the heating mesh plate;

[0013] Through the above technical solution, by threading the driving threaded rod and the support block, the rotating driving threaded rod can drive the support block to move along the slide groove to drive the heating screen. When the heating screen is above the static mold, the plastic sheet inside it can be heated to make the plastic sheet reach a plastic state, which is convenient for subsequent pressing and molding.

[0014] Furthermore, a hydraulic rod is provided in the middle of the upper end of the frame, and the output shaft of the hydraulic rod passes through the frame and is fixedly connected to the lower pressing block;

[0015] Through the above technical solution, the hydraulic rod arranged at the upper end of the frame can provide the source power for the movement of the lower pressing block. When the plastic sheet is in a plastic state, the lower pressing block drives the movable mold and the static mold to close, and performs a downward pressing molding operation on the plastic sheet.

[0016] Furthermore, buffer springs are fixedly connected to the four corners of the lower end of the lower pressing block, the lower ends of the buffer springs are fixedly connected to the base, and the outer wall of the guide rod body is slidably connected to the lower pressing block;

[0017] Through the above technical solution, the four guide rods are slidably connected to the lower pressure block, which can prevent the lower pressure block from having a large offset when it moves, and the four buffer springs at the lower end of the lower pressure block can provide a buffering force when the lower pressure block moves downward, reducing the damage to the equipment caused by the impact.

[0018] Furthermore, the inner walls on both sides of the rotating groove are rotatably connected to the gear, the clamping blocks slide inside the rotating groove, the moving grooves are connected to the rotating groove, and the moving blocks slide inside the moving grooves;

[0019] Through the above technical solution, by allowing the movable groove and the rotating groove to communicate with each other, the first rack fixedly connected to the clamping block and the second rack fixedly connected to the movable block can contact and engage with the gear, and then the movement of the movable block inside the movable groove can affect the clamping block inside the rotating groove.

[0020] Furthermore, a PLC control panel is fixedly connected to the upper end of one side of the front outer wall of the base, the rear ends of the movable threaded rods are rotatably connected to the inner wall of the rear end of the movable groove, and the front ends of the movable threaded rods pass through the movable groove and are fixedly connected to a turntable;

[0021] Through the above technical solution, the PLC control panel fixedly connected to the base makes it convenient for staff to control the operating status of the equipment. After the equipment is shut down using the PLC control panel, the turntable can be used to drive the movable threaded rod to rotate, and then the turntable can be used to connect with the movable block through a thread, so as to drive the movable block to move inside the movable groove.

[0022] The utility model has the following beneficial effects:

[0023] The utility model proposes a thermoforming equipment, which restricts the left and right directions of the static mold and the movable mold by slidingly connecting the two first connecting blocks and the two second connecting grooves in the connecting mechanism, and cooperates with the clamping block to clamp the first connecting block and the second connecting block to restrict the front and rear directions of the static mold and the movable mold, and utilizes the movable threaded rod to drive the movable block to move, and utilizes the first rack and the second rack to engage with the gear to release the clamping state of the first connecting block and the second connecting block, thereby facilitating the disassembly and assembly of the mold, reducing the difficulty of mold replacement, and reducing the time of preliminary preparation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of a thermoforming equipment proposed in the present utility model;

[0025] Figure 2 This is an axial cross-sectional view of the frame, base, lower pressing block, movable mold and static mold of a thermoforming equipment proposed in the utility model;

[0026] Figure 3This is an exploded diagram of a partial structure of a thermoforming equipment proposed in the utility model;

[0027] Figure 4 This is an axial cross-sectional view of the frame, base and lower pressing block of a thermoforming device proposed in the utility model;

[0028] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0030] Figure 7 for Figure 4 Enlarged view of point C in the middle.

[0031] Description of reference numerals:

[0032] 1. Base; 2. PLC control panel; 3. Heating mechanism; 301. Frame; 302. Slide; 303. Servo motor; 304. Driving threaded rod; 305. Support block; 306. Heating screen; 4. Pressing mechanism; 401. Hydraulic rod; 402. Pressing block; 403. Guide rod; 404. Buffer spring; 5. Connecting mechanism; 501. Static mold; 502. First connecting groove; 503. First connecting block; 504. Moving mold; 505. Second connecting groove; 506. Second connecting block; 507. Rotating groove; 508. Gear; 509. Block; 510. First rack; 511. Moving groove; 512. Moving threaded rod; 513. Moving block; 514. Second rack; 515. Turntable. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the specific embodiments of the present invention to clearly and completely describe the technical solutions in the specific embodiments of the present invention. Obviously, the specific embodiments described are only part of the specific embodiments of the present invention, not all of the specific embodiments. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Reference Figure 1-7The utility model provides a specific embodiment: a thermoforming device, including a base 1, a heating mechanism 3 and a pressing mechanism 4, the heating mechanism 3 includes a frame 301 and a driving threaded rod 304, the lower end of the frame 301 is fixedly connected to the base 1, a slide groove 302 is provided at the rear end of the middle part of the upper end of the base 1, the front end of the driving threaded rod 304 is rotatably connected to the inner wall of the front end of the slide groove 302, the pressing mechanism 4 includes a pressing block 402 and four guide rods 403, the upper and lower ends of the guide rods 403 are fixedly connected to the base 1 and the frame 301 respectively, and a connecting mechanism 5 is provided inside the base 1 and the pressing block 402;

[0035] The connecting mechanism 5 includes a static mold 501, a dynamic mold 504, four gears 508, two movable threaded rods 512 and four clamping blocks 509. The two sides of the lower end of the static mold 501 and the two sides of the upper end of the dynamic mold 504 are respectively provided with a first connecting groove 502 and a second connecting groove 505. The two sides of the front end of the upper end of the base 1 and the two sides of the lower end of the lower pressing block 402 are respectively fixedly connected with a first connecting block 503 and a second connecting block 506. The first connecting block 503 and the second connecting block 506 are respectively slidably connected to the first connecting groove 502 and the second connecting groove 505. The front ends of the two sides of the upper end of the base 1 and the two sides of the front end of the lower pressing block 402 are respectively provided with a rotating groove 507.

[0036] The lower ends of the upper end blocks 509 pass through the lower pressing block 402 and are clamped and connected to the second connecting block 506. The upper ends of the lower end blocks 509 pass through the base 1 and are clamped and connected to the first connecting block 503. The front end of the middle part of the upper end inside the base 1 and the middle part of the front end inside the lower pressing block 402 are both provided with a moving groove 511. The outer wall of the rod body of the moving threaded rod 512 is threadedly connected to the moving block 513. The outer wall of the rear end of the block 509 and the two sides of the lower end of the moving block 513 are respectively fixedly connected with the first rack 510 and the second rack 514. The first rack 510 and the second rack 514 are both meshed and connected with the gear 508.

[0037] By slidingly connecting the two first connecting blocks 503 and the two second connecting blocks 506 with the two first connecting grooves 502 and the two second connecting grooves 505 in the connecting mechanism 5, the left and right directions of the static mold 501 and the movable mold 504 are restricted. The first connecting block 503 and the second connecting block 506 are clamped and connected with the clamping block 509 to restrict the front and back directions of the static mold 501 and the movable mold 504. The movable threaded rod 512 is used to drive the movable block 513 to move. The first rack 510 and the second rack 514 are engaged with the gear 508 to release the clamping state of the first connecting block 503 and the second connecting block 506 by the clamping block 509, thereby facilitating the disassembly and assembly of the mold, reducing the difficulty of mold replacement, and reducing the time for preliminary preparation work.

[0038] The inner wall of the rear end of the slide 302 is provided with a servo motor 303, and the output shaft of the servo motor 303 is fixedly connected to the driving threaded rod 304. The servo motor 303 provided inside the slide 302 provides the source power for the rotation of the driving threaded rod 304, so that the driving threaded rod 304 can rotate quickly inside the slide 302. The outer wall of the rod body of the driving threaded rod 304 is threadedly connected with a support block 305, and the support block 305 slides inside the slide 302. The upper end of the support block 305 is fixedly connected with a heating mesh plate 306. By threading the driving threaded rod 304 and the support block 305, the rotating driving threaded rod 304 can drive the support block 305 to move along the slide 302, and when the heating mesh plate 306 is heated, the heating mesh plate 306 is heated. When it is above the static mold 501, the plastic sheet inside it can be heated to make the plastic sheet reach a plastic state, which is convenient for subsequent pressing and molding. A hydraulic rod 401 is provided in the middle of the upper end of the frame 301. The output shaft of the hydraulic rod 401 passes through the frame 301 and is fixedly connected to the lower pressing block 402. The hydraulic rod 401 provided at the upper end of the frame 301 can provide source power for the movement of the lower pressing block 402. When the plastic sheet is in a plastic state, the lower pressing block 402 drives the movable mold 504 to close with the static mold 501, and performs a downward pressing and molding operation on the plastic sheet. The four corners of the lower end of the lower pressing block 402 are fixedly connected with buffer springs 404. The lower end of the buffer spring 404 is fixedly connected to the base 1, and the outer wall of the rod body of the guide rod 403 slides with the lower pressing block 402. The four guide rods 403 are slidably connected to the lower pressing block 402, which can prevent the lower pressing block 402 from deviating greatly when it moves, and the four buffer springs 404 at the lower end of the lower pressing block 402 can provide a buffer force when the lower pressing block 402 moves downward, reducing the damage to the equipment caused by the impact. The inner walls on both sides of the rotating groove 507 are rotatably connected to the gear 508, the clamping blocks 509 slide inside the rotating groove 507, the moving grooves 511 are connected with the rotating groove 507, and the moving blocks 513 slide inside the moving groove 511. By allowing the moving groove 511 to be connected with the rotating groove 507, the first rack 510 fixedly connected to the clamping block 509 and the second rack 514 fixedly connected to the moving block 513 can be connected with the gear 508. 8 contacts and engages, and then the movement of the moving block 513 inside the moving groove 511 can affect the blocking block 509 inside the rotating groove 507. The upper end of the front end outer wall of the base 1 is fixedly connected with the PLC control panel 2, and the rear ends of the moving threaded rods 512 are rotatably connected to the inner wall of the rear end of the moving groove 511. The front ends of the moving threaded rods 512 pass through the moving groove 511 and are fixedly connected with the turntable 515. The PLC control panel 2 fixedly connected to the base 1 is convenient for the staff to control the operating status of the equipment. After the equipment is shut down by the PLC control panel 2, the turntable 515 can be used to drive the moving threaded rod 512 to rotate, and then use it to be threadedly connected to the moving block 513 to drive the moving block 513 to move inside the moving groove 511.

[0039] Working principle: When using the thermoforming equipment, the staff first uses an external power supply to power the equipment, then places the plastic sheet in the static mold 501, and uses the PLC control panel 2 to start the servo motor 303 to drive the driving threaded rod 304 to rotate, so that the support block 305 drives the heating screen 306 to move above the static mold 501 to heat the plastic sheet. Secondly, after the plastic sheet is in a plastic state, the servo motor 303 drives the driving threaded rod 304 to reverse, and moves the heating screen 306 out of the range of the static mold 501. Then the staff uses the PLC control panel 2 to start the hydraulic rod 401 to let the lower pressing block 402 and the movable mold 504 press down along the guide rod 403 to press the plastic sheet into shape. After a short pause, the hydraulic rod 401 drives the lower pressure block 402 to move upward, and the staff takes out the formed plastic sheet. Finally, the staff can use the turntable 515 to drive the movable threaded rod 512 to rotate, so that the movable block 513 moves, and the first rack 510 and the second rack 514 are engaged with the gear 508 to allow the clamping block 509 to release the clamping state of the first connecting block 503 and the second connecting block 506, and take out the mold. Then, the new mold is slid in along the first connecting block 503 and the second connecting block 506, and the rotating turntable 515 is used to drive the movable threaded rod 512 to rotate, so that the clamping block 509 can resume the clamping state of the first connecting block 503 and the second connecting block 506, and complete the installation of the mold.

[0040] Finally, it should be noted that the above is only a preferred specific implementation method of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned specific implementation methods, those skilled in the art can still modify the technical solutions described in the aforementioned specific implementation methods or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thermoforming device comprising a base (1), a heating mechanism (3) and a pressing mechanism (4), characterized in that: The heating mechanism (3) includes a frame (301) and a driving threaded rod (304), the lower end of the frame (301) is fixedly connected to the base (1), a slide groove (302) is provided at the rear end of the middle portion of the upper end of the base (1), the front end of the driving threaded rod (304) is rotatably connected to the inner wall of the front end of the slide groove (302), the pressing mechanism (4) includes a pressing block (402) and four guide rods (403), the upper end and the lower end of the guide rod (403) are fixedly connected to the base (1) and the frame (301), respectively, and the base (1) and the pressing block (402) are both provided with a connecting mechanism (5); The connecting mechanism (5) comprises a static mold (501), a dynamic mold (504), four gears (508), two movable threaded rods (512) and four clamping blocks (509); both sides of the lower end of the static mold (501) and both sides of the upper end of the dynamic mold (504) are respectively provided with a first connecting groove (502) and a second connecting groove (505); both sides of the front end of the upper end of the base (1) and both sides of the lower end of the lower pressing block (402) are respectively fixedly connected with a first connecting block (503) and a second connecting block (506); the first connecting block (503) and the second connecting block (506) are respectively slidably connected to the first connecting groove (502) and the second connecting groove (505); the front ends of both sides of the upper end of the base (1) and both sides of the front end of the lower pressing block (402) are respectively provided with a rotation groove (507); The lower ends of the upper clamping blocks (509) pass through the lower pressing block (402) and are clamped and connected to the second connecting block (506); the upper ends of the lower clamping blocks (509) pass through the base (1) and are clamped and connected to the first connecting block (503); a moving groove (511) is provided at the front end of the middle portion of the upper end of the base (1) and the middle portion of the front end of the lower pressing block (402); the outer wall of the rod body of the moving threaded rod (512) is threadedly connected to the moving block (513); the outer wall of the rear end of the clamping block (509) and both sides of the lower end of the moving block (513) are fixedly connected to the first rack (510) and the second rack (514), respectively; the first rack (510) and the second rack (514) are meshed and connected to the gear (508).

2. The thermoforming equipment according to claim 1, characterized in that: A servo motor (303) is provided on the inner wall of the rear end of the slide groove (302), and an output shaft of the servo motor (303) is fixedly connected to the driving threaded rod (304).

3. The thermoforming equipment according to claim 1, characterized in that: The outer wall of the driving threaded rod (304) is threadedly connected to a support block (305), the support block (305) slides inside the slide groove (302), and the upper end of the support block (305) is fixedly connected to a heating screen (306).

4. The thermoforming equipment according to claim 1, characterized in that: A hydraulic rod (401) is provided in the middle of the upper end of the frame (301), and an output shaft of the hydraulic rod (401) passes through the frame (301) and is fixedly connected to the lower pressing block (402).

5. The thermoforming equipment according to claim 1, characterized in that: Buffer springs (404) are fixedly connected to the four corners of the lower end of the lower pressing block (402), the lower end of the buffer spring (404) is fixedly connected to the base (1), and the outer wall of the guide rod (403) is slidably connected to the lower pressing block (402).

6. The thermoforming equipment according to claim 1, characterized in that: The inner walls on both sides of the rotating groove (507) are rotatably connected to the gear (508), the clamping blocks (509) slide inside the rotating groove (507), the moving grooves (511) are connected to the rotating groove (507), and the moving blocks (513) slide inside the moving grooves (511).

7. The thermoforming equipment according to claim 1, characterized in that: The upper end of one side of the front outer wall of the base (1) is fixedly connected to a PLC control panel (2), the rear ends of the movable threaded rods (512) are rotatably connected to the inner wall of the rear end of the movable groove (511), and the front ends of the movable threaded rods (512) pass through the movable groove (511) and are fixedly connected to a turntable (515).

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