Plastic uptake forming machine for food packaging box

Abstract

The utility model discloses a plastic uptake forming machine for a food packaging box, and relates to the technical field of food packaging, the plastic uptake forming machine comprises a base, a transmission assembly, a mold and a heating plate, the transmission assembly is connected to the base, the mold and the heating plate are connected to the transmission assembly, and a motor drives a gear to drive a threaded rod to rotate. Through rotation of the threaded rod, opposite and opposite movement of the limited connecting blocks can be achieved, then pressing of plastic sheets in a plastic state of the mold is achieved, a vacuum state is formed through air exhaust of an air pump on a male mold, the plastic sheets form a food packaging box through the two effects, a motor drives a gear to rotate, the position of a rack is changed, and movement of the position of a heating plate is achieved. The vacuum state between the male die and the food packaging box is maintained and disappears through air exhaust and air inflation of the air pump, and stacking of the food packaging box is achieved. According to the utility model, all the steps form a flow through the matching of all the components, so that the manpower investment is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of food packaging technology, and in particular relates to a blister forming machine for food packaging boxes. Background Technology

[0002] Vacuum forming machines for food packaging boxes use heating devices to soften thermoplastic sheets such as PVC, PE, PP, and PET. Then, using the vacuum suction generated by a vacuum pump, the softened sheets are adhered to the surface of a mold. After cooling and shaping, food packaging boxes of various shapes are formed.

[0003] Existing semi-automatic thermoforming machines for food packaging boxes require numerous manual steps, resulting in wasted manpower and inconsistent product quality. Therefore, we propose a thermoforming machine for food packaging boxes that streamlines the process through the coordination of mechanical parts, reducing manpower input and improving work efficiency. Utility Model Content

[0004] To achieve the above objectives, this utility model proposes a thermoforming machine for food packaging boxes, comprising a base, a transmission assembly, a mold, and a heating plate, characterized in that the transmission assembly is connected to the base, and the mold and the heating plate are connected to the transmission assembly;

[0005] The transmission assembly includes a motor fixed on a base, a drive gear fixed at the output end of the motor, the drive gear meshing with a driven gear, the driven gear being fixed through and at the lower end of a threaded rod, the threaded rod being movably connected to the base, and a driven gear being fixed at the middle end of the threaded rod, the driven gear meshing with a rack.

[0006] In one example, the rack is fixed to one side of the heating plate, and the length of the rack is greater than a multiple of the length of the heating plate.

[0007] In one example, a fixing rod is installed below the heating plate. The fixing rod is T-shaped, with its bottom end fixed to the top of the base and its upper end located below the driven gear.

[0008] In one example, the mold includes a punch and a connecting block fixed to one side of the punch. The punch connecting block is sleeved on the upper end of a threaded rod, and a die connecting block is sleeved on the lower end of the threaded rod. The die connecting block is fixed to the side of the die, and the die is placed on the top of the base.

[0009] In one example, one end of a connecting rod is fixed to the side of the die cavity, the other end of the connecting rod is located inside the groove of the limiting plate, the side of the punch is fixed to the fixed end of the hydraulic rod, the extended end of the hydraulic rod is located inside the groove of the limiting plate, and the limiting plate is fixedly connected to the top of the base.

[0010] In one example, the upper and lower threads of the threaded rod are opposite in shape.

[0011] In one example, an air pump is fixed above the punch.

[0012] In one example, a baffle plate is fixed to the top of the base.

[0013] The vacuum forming machine for food packaging boxes proposed in this utility model can bring the following beneficial effects:

[0014] This invention uses a motor to drive a gear to rotate a threaded rod. Since the threads at the upper and lower ends are in opposite directions, the rotation of the threaded rod can enable the limited connecting blocks to move towards and away from each other, thereby pressing the plastic sheet into a moldable state. The vacuum state created by the air pump on the punch, combined with the other two factors, forms a food packaging box from the plastic sheet.

[0015] This invention uses a motor to drive a gear to rotate, changing the position of the rack and thus moving the heating plate. It also uses an air pump to pump air in and out, maintaining and eliminating the vacuum between the punch and the food packaging box, thus enabling the stacking of the food packaging boxes.

[0016] The mechanical parts work together to remove the heating plate while the mold moves towards each other to press the plastic sheet in a malleable state. The air pressure difference created by the air pump above the punch also presses the plastic sheet in a malleable state. The two actions of these two aspects form the plastic sheet into a food packaging box. After the food packaging box is formed, the mold moves back to the origin, the heating plate returns to the origin, and then the punch moves the finished product to the stacking area. The cooperation of various components makes the processing steps form a process, reducing the input of manpower and improving work efficiency. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a vacuum forming machine for food packaging boxes according to this utility model.

[0019] Figure 2 This is a schematic diagram of the overall elevation structure of a vacuum forming machine for food packaging boxes according to the present invention.

[0020] Figure 3 This is a schematic diagram of the transmission component structure of a thermoforming machine for food packaging boxes according to the present invention.

[0021] Figure 4This is a schematic diagram of section A of a vacuum forming machine for food packaging boxes according to the present invention.

[0022] The attached figures are labeled as follows:

[0023] 1. Base; 2. Threaded rod; 3. Motor; 4. Drive gear; 5. Driven gear one; 6. Driven gear two; 7. Die; 8. Punch; 9. Connecting block; 10. Heating plate; 11. Connecting rod; 12. Hydraulic rod; 13. Air pump; 14. Fixing rod; 15. Limiting plate; 16. Blocking plate; 17. Rack. Detailed Implementation

[0024] To more clearly illustrate the overall concept of this utility model, a detailed description is provided below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0029] like Figures 1-4 As shown in the figure, an embodiment of the present invention proposes a thermoforming machine for food packaging boxes, which includes a base 1, a transmission component, a mold, and a heating plate 10. The transmission component is connected to the top of the base 1, and the mold and the heating plate 10 are connected to the transmission component.

[0030] Before use, cut the thermoplastic plastic into a square piece on the surface of the concave mold 7. Place the concave mold 7 on the top of the base 1, place the plastic piece on the surface of the concave mold 7, turn on the heating plate 10, and heat the plastic piece to gradually soften it into a plastic state.

[0031] At this time, motor 3 begins to rotate forward. Motor 3 is fixed to the top of base 1, and the output end of motor 3 is fixed with drive gear 4. Motor 3 drives drive gear 4 to rotate forward, and drive gear 4 meshes with driven gear 1 5. Driven gear 1 5 is fixed through and fixed to the lower end of threaded rod 2. Threaded rod 2 is movably fixed to the top of base 1. Driven gear 4 drives driven gear 1 5 to rotate forward, which in turn drives threaded rod 2 to rotate forward. Driven gear 2 6 is fixed to the middle of threaded rod 2, and threaded rod 2 drives driven gear 2 6 to rotate forward. Driven gear 2 6 meshes with rack 17. Forward rotation will cause the relative position of the heating plate 10 and the threaded rod 2 to change. Since the length of the rack 17 is greater than 1.5 times the length of the heating plate 10, when the driven gear 2 6 rotates to the end of the rack 17, the heating plate 10 is completely outside the mold. There is a fixing rod 14 below the heating plate 10. The fixing rod 14 is T-shaped. The bottom end of the fixing rod 14 is fixed to the top of the base 1, and the upper end of the fixing rod 14 is below the driven gear 2 6. The fixing rod 14 can support the driven gear 2 6 and the rack 17 to ensure that the two are in a meshing state, while giving the heating plate 10 a certain supporting force.

[0032] When the threaded rod 2 rotates in the forward direction, a connecting block 9 is fixed on the side of the punch 8. The connecting block 9 has a thread inside. The connecting block 9 of the punch 8 is sleeved on the upper end of the threaded rod 2. One end of the hydraulic rod 12 is fixed on the side of the punch 8. The protruding end of the hydraulic rod 12 is inside the groove opened in the limiting plate 15. The connecting block 9 of the die 7 is sleeved on the lower end of the threaded rod 2. One end of the connecting rod 11 is fixed on the side of the die 7. The other end of the connecting rod 11 is inside the groove opened in the limiting plate 15. The limiting plate 15 is fixedly connected to the top of the base. The die 7 and the punch 8 can only move up and down along the threaded rod 2 because the limiting plate 15 restricts their rotation. Since the upper and lower half threads of the threaded rod 2 are opposite, when the threaded rod 2 rotates in the forward direction, the die 7 and the punch 8 move towards each other. Finally, the punch 8 presses the plastic sheet in the plastic state into the die 7.

[0033] At this time, the air pump 13 located above the punch 8 starts to pump air, and a vacuum state is formed between the punch 8 and the plastic sheet. The extrusion of the die 7 and the punch 8 and the vacuum pumping work together to complete the thermoforming of the food packaging box. At this time, the vacuum state between the punch 8 and the food packaging box is maintained.

[0034] The motor 3 rotates in reverse, driving the drive gear 4 to rotate in reverse. The drive gear 4 drives the threaded rod 2 to rotate in reverse, and the relative position of the rack 17 that meshes with the driven gear 6 on the threaded rod 2 changes, thereby realizing the return of the heating plate 10 to the middle of the mold. The threaded rod 2 rotates in reverse, and the mold connecting block 9 on the threaded rod 2 moves in opposite directions. The concave mold 7 returns to the initial position, and the convex mold 8 is placed on the top of the base 1.

[0035] At this time, the fixed end of the hydraulic rod 12 is connected to the punch 8, and the movable end of the hydraulic rod 12 inside the groove of the limiting plate 15 is shortened. The punch 8 is no longer limited by the limiting plate 15. The motor 3 continues to rotate in the reverse direction, and the punch 8 will rotate in the reverse direction as well. Since there is a vacuum between the punch 8 and the food packaging box, the punch 8 will rotate with the food packaging box until it reaches the position of the blocking plate 16 and stops rotating. The air pump 13 starts to release air. The food packaging box will fall to the top of the base 1 due to gravity. Since the position of the blocking plate 16 is fixed, the position where the food packaging box falls each time is fixed, thus realizing the stacking of finished products.

[0036] When motor 3 rotates forward again, punch 8 returns to its original position, hydraulic rod 12 extends, and the movable end of hydraulic rod 12 is inserted into the groove of limit plate 15, completing one workflow.

[0037] In summary, this invention uses a motor 3 to drive a gear to rotate a threaded rod 2. Since the threads at the upper and lower ends are in opposite directions, the rotation of the threaded rod 2 allows the limiting connecting blocks 9 to move towards and away from each other, thereby pressing a plastic sheet into a moldable state. A vacuum is created by the air pump 13 on the punch 8, and these two actions combine to form a food packaging box from the plastic sheet. The motor 3 drives the gear to rotate, changing the position of the rack 17 and thus moving the heating plate 10. The air pump 13 maintains and eliminates the vacuum between the punch 8 and the food packaging box, enabling the stacking of the food packaging boxes. This invention, through the cooperation of its components, creates a streamlined process, reducing manpower and improving work efficiency.

[0038] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0039] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A thermoforming machine for food packaging boxes, comprising a base (1), a transmission assembly, a mold, and a heating plate (10), characterized in that, The transmission assembly is connected to the base (1), and the mold and heating plate (10) are connected to the transmission assembly; The transmission assembly includes a motor (3) fixed on a base (1), a drive gear (4) fixed at the output end of the motor (3), the drive gear (4) meshing with a driven gear (5), the driven gear (5) being fixed through and at the lower end of a threaded rod (2), the threaded rod (2) being movably connected to the base (1), and a driven gear (6) fixed at the middle end of the threaded rod (2), the driven gear (6) meshing with a rack (17).

2. The thermoforming machine for food packaging boxes according to claim 1, characterized in that, The rack (17) is fixed to one side of the heating plate (10), and the length of the rack (17) is greater than 1.5 times the length of the heating plate (10).

3. The thermoforming machine for food packaging boxes according to claim 1, characterized in that, A fixing rod (14) is installed below the heating plate (10). The fixing rod (14) is T-shaped. The bottom end of the fixing rod (14) is fixed to the top of the base (1). The upper end of the fixing rod (14) is located below the driven gear (6).

4. The thermoforming machine for food packaging boxes according to claim 1, characterized in that, The mold includes a punch (8) and a connecting block (9) fixed on one side of the punch (8). The connecting block (9) of the punch (8) is sleeved on the upper end of the threaded rod (2). The lower end of the threaded rod (2) is sleeved with a connecting block (9) of the die (7). The connecting block (9) of the die (7) is fixed on the side of the die (7). The die (7) is placed on the top of the base (1).

5. The thermoforming machine for food packaging boxes according to claim 4, characterized in that, The concave die (7) has one end of a connecting rod (11) fixed on its side. The other end of the connecting rod (11) is located inside the groove of the limiting plate (15). The convex die (8) is fixed to the fixed end of the hydraulic rod (12) on its side. The extended end of the hydraulic rod (12) is located inside the groove of the limiting plate (15). The limiting plate (15) is fixedly connected to the top of the base (1).

6. The thermoforming machine for food packaging boxes according to claim 4, characterized in that, The upper and lower threads of the threaded rod (2) are opposite in shape.

7. The thermoforming machine for food packaging boxes according to claim 4, characterized in that, An air pump (13) is fixedly connected above the punch (8).

8. The thermoforming machine for food packaging boxes according to claim 1, characterized in that, A baffle plate (16) is fixed to the top of the base (1).

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