Hot press forming device for food-grade hot forming film

Abstract

The utility model relates to the technical field of hot press forming equipment, in particular to a hot press forming device for a food-grade hot forming film. According to the technical scheme, the device comprises a base, a mounting frame used for supporting is fixedly arranged at the top of the base, a hydraulic cylinder used for driving is arranged at the top of the mounting frame, a top plate used for mounting is arranged below the hydraulic cylinder, and an upper die and a lower die are arranged on the top plate and the base respectively. The top plate and the base are each provided with two locking structures used for fixing a mold, each locking structure comprises a mounting box used for mounting, an inserting rod is movably arranged in each mounting box, a locking frame used for locking is movably arranged in each mounting box, an ejector rod is movably arranged on the inner wall of one side of each mounting box, and a locking rod is movably arranged on the inner wall of the other side of each mounting box. Through the arrangement of the mounting box, the inserting rod, the clamping block and the lock frame, the upper die and the lower die can be quickly disassembled and assembled, a bolt positioning mounting mode is replaced, the operation steps are simplified, and the subsequent replacement difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of thermoforming equipment technology, and in particular to a thermoforming device for food-grade thermoforming film. Background Technology

[0002] Thermoformed film is a thin film material made through a thermoforming process. It is typically made from high-molecular polymers such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polystyrene (PS). During manufacturing, the polymer material is first heated to a softened state, and then, under the action of a mold, it is shaped to fit the mold through vacuum adsorption, pressure forming, or other methods. After cooling, it solidifies and takes its final form. Thermoformed film has excellent flexibility and can adapt to the packaging needs of products of various shapes. In the food packaging industry, food-grade thermoformed film is widely used. The processing and forming of thermoformed film requires matching upper and lower molds.

[0003] Because the mold is fixed by positioning bolts, multiple bolts need to be rotated frequently during disassembly and assembly to separate the mold from the mounting plate, which increases the difficulty of replacement and reduces the efficiency of replacement. In view of the above reasons, this application proposes a thermoforming device for food-grade thermoforming film. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a hot pressing device for food-grade thermoforming films.

[0005] The technical solution of this utility model: a hot pressing forming device for food-grade thermoforming film, including a base, a mounting frame for support is fixedly provided on the top of the base, a hydraulic cylinder for driving is provided on the top of the mounting frame, a top plate for installation is provided below the hydraulic cylinder, an upper mold and a lower mold are respectively provided on the top plate and the base, and two locking structures for fixing the mold are provided on both the top plate and the base.

[0006] The locking structure includes a mounting box for installation, a plug rod is movably provided inside the mounting box, a locking frame for locking is movably provided inside the mounting box, and a top rod is movably provided on one inner wall of the mounting box.

[0007] Optionally, a connecting seat is fixedly provided on one inner wall of the mounting box, the lock frame and the connecting seat are movably connected, and a spring is fixedly provided on one inner wall of the mounting box, the other end of the spring being fitted to the lock frame.

[0008] Optionally, a locking block is fixedly provided on one side of the insertion rod, and the locking frame includes a locking rod and a locking hook. The locking hook and the locking block are both provided with parallel inclined surfaces on their adjacent sides.

[0009] Optionally, a baffle is fixedly provided at the end of the top rod away from the lock frame, and a second spring is sleeved on the top rod. One end of the second spring is in contact with the baffle, and the other end of the second spring is in contact with the mounting box.

[0010] Optionally, the lower mold has multiple internal threaded holes, and a positioning pin is movably installed in each internal threaded hole. The bottom of the upper mold has multiple round holes, and the inner diameter and position of the round holes and the internal threaded holes are the same.

[0011] Optionally, the bottom outer wall of the positioning pin is provided with a texture that matches the internal threaded hole, and the top outer wall of the positioning pin is provided with an anti-slip groove.

[0012] Optionally, two limiting rods are fixedly provided on the top of the top plate, and horizontal plates are fixedly provided on both sides of the mounting frame. The horizontal plates are provided with sliding grooves, and the limiting rods and sliding grooves are movably connected. Slots are provided on both sides of the upper mold and the lower mold.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] 1. This utility model, through the installation box, insert rod, clip and locking frame, enables the quick disassembly and assembly of the upper and lower molds, replacing the bolt positioning installation mode, simplifying the operation steps and reducing the difficulty of subsequent replacement.

[0015] 2. By setting up round holes, internal threaded holes and positioning pins, this utility model can achieve positioning of the thermoformed film during hot pressing, which can effectively avoid forming deviation. The setting of multiple internal threaded holes can make it convenient for users to switch the position of the positioning pins according to the actual situation, which is convenient for positioning products of different sizes. Attached Figure Description

[0016] Figure 1 A first-view perspective three-dimensional structural diagram of the present invention is provided;

[0017] Figure 2 A second-view three-dimensional structural schematic diagram of the present invention is provided;

[0018] Figure 3 A top sectional view of the locking structure in this utility model is provided;

[0019] Figure 4 A three-dimensional structural diagram of the upper and lower molds in this utility model is provided;

[0020] Figure 5 A three-dimensional structural diagram of the positioning pin in this utility model is provided.

[0021] Figure label:

[0022] 1. Base;

[0023] 2. Mounting bracket;

[0024] 3. Hydraulic cylinder;

[0025] 4. Top slab;

[0026] 5. Locking structure; 501. Mounting box; 502. Insert rod; 503. Locking block; 504. Connecting seat; 505. Lock frame; 506. Spring 1; 507. Push rod;

[0027] 6. Lower mold;

[0028] 7. Upper mold;

[0029] 8. Round hole;

[0030] 9. Internal threaded hole;

[0031] 10. Positioning pin;

[0032] 11. Horizontal board;

[0033] 12. Limiting rod;

[0034] 13. Anti-slip grooves;

[0035] 14. Texture;

[0036] 15. Slot. Detailed Implementation

[0037] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0038] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0039] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0040] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., 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 disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0041] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0042] Example 1

[0043] like Figure 1-5 As shown, the present invention proposes a thermoforming device for food-grade thermoforming film, including a base 1, a mounting frame 2 for support fixed on the top of the base 1, a hydraulic cylinder 3 for driving on the top of the mounting frame 2, a top plate 4 for installation below the hydraulic cylinder 3, two limiting rods 12 fixed on the top of the top plate 4, a horizontal plate 11 fixed on both sides of the mounting frame 2, a sliding groove on the horizontal plate 11, the limiting rods 12 and the sliding groove being movably connected, an upper mold 7 and a lower mold 6 respectively on the top plate 4 and the base 1, slots 15 on both sides of the upper mold 7 and the lower mold 6, and two locking structures 5 for fixing the mold on both the top plate 4 and the base 1.

[0044] The locking structure 5 includes an installation box 501 for installation, a rod 502 is movably disposed inside the installation box 501, a locking frame 505 for locking is movably disposed inside the installation box 501, a connecting seat 504 is fixedly disposed on one inner wall of the installation box 501, the locking frame 505 and the connecting seat 504 are movably connected, a locking block 503 is fixedly disposed on one side of the rod 502, the locking frame 505 includes a locking rod and a locking hook, the locking frame 505 can lock the rod 502, the locking hook and the locking block 503 are both provided with parallel inclined surfaces on the sides close to each other, a spring 506 is fixedly disposed on one inner wall of the installation box 501, the other end of the spring 506 is in contact with the locking frame 505, a top rod 507 is movably disposed on one inner wall of the installation box 501, a baffle is fixedly disposed on one end of the top rod 507 away from the locking frame 505, a second spring is sleeved on the top rod 507, one end of the second spring is in contact with the baffle, and the other end of the second spring is in contact with the installation box 501;

[0045] The lower mold 6 has multiple internal threaded holes 9, and a positioning pin 10 is movably installed in the internal threaded holes 9. The cooperation between the positioning pin 10 and the internal threaded holes 9 can realize the positioning of the thermoformed film and reduce the forming deviation. The bottom outer wall of the positioning pin 10 has a texture 14, which is adapted to the internal threaded holes 9. The top outer wall of the positioning pin 10 has an anti-slip groove 13. The bottom of the upper mold 7 has multiple round holes 8, and the inner diameter and position of the round holes 8 and the internal threaded holes 9 are the same.

[0046] In this embodiment, when it is necessary to replace the upper mold 7 and the lower mold 6, firstly, each set of push rods 507 are simultaneously pressed inward. The push rods 507 then press the locking frame 505. The locking frame 505 rotates within the connecting seat 504 and presses the spring 506 on one side. When the locking frame 505 rotates, it will cause the locking hook to separate from the locking block 503. At this time, the two insert rods 502 are pulled in opposite directions. When the ends of the insert rods 502 that are close to each other are both dislodged from the slot 15, the upper mold 7 or the lower mold 6 can be removed. During installation, the upper mold 7 or the lower mold 6 is placed between each set of insert rods 502, and the slot 15 and the insert rods 502 are on the same horizontal line. Then, the two insert rods 502 are pressed in opposite directions. The locking block 503 is driven, and the locking block 503 then presses the locking frame 505. When the inclined surface on one side of the locking block 503 separates from the inclined surface on one side of the locking frame 505, the spring 506 causes the locking frame 505 to reset and lock onto the locking block 503, thereby locking the insertion rod 502. At this time, one end of the insertion rod 502 is inserted into the slot 15 to complete the installation. During hot pressing, the food-grade thermoforming film is placed in the groove of the lower mold 7, and then the positioning pin 10 is passed through the positioning hole of the thermoforming film and connected to the internal thread hole 9 to complete the precise positioning of the thermoforming film and effectively avoid molding deviation. The setting of multiple internal thread holes 9 allows the user to easily switch the position of the positioning pin 10 according to the actual situation, which is convenient for positioning products of different sizes.

[0047] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A thermoforming apparatus for a food-grade thermoforming film, comprising a base (1), wherein a mounting frame (2) for support is fixedly provided on the top of the base (1), a hydraulic cylinder (3) for driving is provided on the top of the mounting frame (2), a top plate (4) for mounting is provided below the hydraulic cylinder (3), and an upper mold (7) and a lower mold (6) are respectively provided on the top plate (4) and the base (1), characterized in that: The top plate (4) and the base (1) are each provided with two locking structures (5) for fixing the mold. The locking structure (5) includes a mounting box (501) for installation, a plug rod (502) is movably provided inside the mounting box (501), a locking frame (505) for locking is movably provided inside the mounting box (501), and a top rod (507) is movably provided on one inner wall of the mounting box (501).

2. The hot pressing apparatus for a food-grade thermoforming film according to claim 1, characterized in that, A connecting seat (504) is fixedly provided on one inner wall of the mounting box (501). The lock frame (505) and the connecting seat (504) are movably connected. A spring (506) is fixedly provided on one inner wall of the mounting box (501). The other end of the spring (506) is in contact with the lock frame (505).

3. The hot pressing apparatus for food-grade thermoforming film according to claim 1, characterized in that, A locking block (503) is fixedly provided on one side of the insertion rod (502), and the locking frame (505) includes a locking rod and a locking hook. The locking hook and the locking block (503) are both provided with parallel inclined surfaces on the side that are close to each other.

4. The hot pressing apparatus for food-grade thermoforming film according to claim 1, characterized in that, A baffle is fixedly provided at one end of the top rod (507) away from the lock frame (505). A second spring is sleeved on the top rod (507). One end of the second spring is in contact with the baffle, and the other end of the second spring is in contact with the mounting box (501).

5. The hot pressing apparatus for a food-grade thermoforming film according to claim 1, characterized in that, The lower mold (6) has multiple internal threaded holes (9), and a positioning pin (10) is movably provided in the internal threaded holes (9). The bottom of the upper mold (7) has multiple round holes (8), and the inner diameter and position of the round holes (8) and the internal threaded holes (9) are the same.

6. The hot pressing apparatus for a food-grade thermoforming film according to claim 5, characterized in that, The bottom outer wall of the positioning pin (10) is provided with a texture (14), which is adapted to the internal thread hole (9), and the top outer wall of the positioning pin (10) is provided with an anti-slip groove (13).

7. The hot pressing apparatus for food-grade thermoforming film according to claim 5, characterized in that, The top plate (4) is fixedly provided with two limiting rods (12), and the mounting bracket (2) is fixedly provided with horizontal plates (11) on both sides. The horizontal plates (11) are provided with sliding grooves. The limiting rods (12) and the sliding grooves are movably connected. The upper mold (7) and the lower mold (6) are provided with slots (15) on both sides.

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