A PET packaging blister mold

Abstract

This utility model discloses a PET packaging blister mold, relating to the field of blister mold technology. It includes a base, with a lower mold base at the top of the base. First guide rods are provided at the four corners of the top of the lower mold base. An upper mold base is slidably mounted on the outside of the four first guide rods. Four second guide rods are provided on the top of the base and on one side of the lower mold base. A lifting seat is slidably mounted on the outside of the four second guide rods. This utility model mold uses an adjustment mechanism to drive two limiting mechanisms to move synchronously closer or further away. The third roller in the limiting mechanism, in conjunction with the third roller, adheres to both sides of the roll material, precisely adapting to PET rolls of different widths. It restricts roll material offset laterally. Simultaneously, the first and second rollers clamp the roll material from above and below, forming a double fixation of lateral limiting and vertical clamping, preventing wrinkles and offset of the roll material during conveying, heating, and forming processes.

Description

Technical Field

[0001] This utility model relates to the field of blister molding technology, specifically a PET packaging blister molding. Background Technology

[0002] PET packaging is typically made by softening PET rolls through high-temperature heating and then using a vacuum forming process. The core of this process is the vacuum forming mold, which is usually made of materials such as aluminum alloy or resin. The precise shape of its cavity determines the final shape, size, and texture of the packaging. During production, the softened PET roll is adhered to the mold surface, rapidly cooled and shaped, and then cut. This efficiently produces lightweight, transparent, highly barrier-free, and cost-effective packaging containers, widely used in trays and outer shells for food, pharmaceutical, and electronic products.

[0003] Existing thermoforming molds have poor limiting function for PET rolls. The limiting components are mostly fixed baffles or manually adjustable positioning blocks, which are difficult to flexibly adapt to rolls of different widths and thicknesses. The rolls are prone to deviation during continuous feeding, thus affecting the quality of thermoforming.

[0004] Based on this, a PET packaging blister mold is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a PET packaging blister mold to solve the problem of poor limiting function of PET roll material in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A PET packaging blister mold includes a base, a lower mold base is provided on the top of the base, a first guide rod is provided at each of the four corners of the top of the lower mold base, and an upper mold base is slidably mounted on the outside of the four first guide rods;

[0008] Four second guide rods are provided on the top of the base and on one side of the lower mold base. A lifting seat is slidably installed on the outside of the four second guide rods. A first mounting groove is provided on the top of the lifting seat. An adjustment mechanism is provided inside the first mounting groove. Two limiting mechanisms are symmetrically arranged on the outside of the adjustment mechanism.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative: the adjusting mechanism includes a positive and negative screw, which is rotatably mounted inside the first mounting slot via a bearing, and a motor is fixedly mounted on one side of the lifting seat, and the positive and negative screw is driven by the motor.

[0011] In one alternative embodiment: the limiting mechanism includes a movable plate, which is threaded to the outside of the positive and negative screws. Mounting blocks are fixedly installed on both sides of the movable plate. A third guide rod is fixedly installed on the top of each of the two mounting blocks. A lifting frame is slidably installed on the outside of the two third guide rods. A first spring is sleeved on the outside of the two third guide rods and above the lifting frame.

[0012] In one alternative: a first roller is rotatably mounted on one side of each of the two mounting blocks, and a second roller is rotatably mounted on one side of the lifting frame and above the first roller.

[0013] In one alternative: a second mounting groove is provided on one side of the movable plate, and a third roller is rotatably mounted inside the second mounting groove via a bearing.

[0014] In one alternative: a second spring is fitted around each of the four second guide rods outside the lifting seat and between the base.

[0015] In one alternative: a positioning groove is provided on one side of the top of the lifting seat, and a pressing block is provided on one side of the upper mold seat and directly above the positioning groove, and the pressing block is adapted to the positioning groove.

[0016] In one alternative: the bottom of the lower mold base is provided with multiple negative pressure holes at equal intervals, and a connecting pipe is provided on one side of the lower mold base, and the connecting pipe is connected to the multiple negative pressure holes.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. The mold of this utility model drives two limiting mechanisms to move closer or further away synchronously through the adjustment mechanism. With the third roller in the limiting mechanism, it fits the two sides of the roll material and can accurately adapt to PET roll materials of different widths. It restricts the roll material from shifting laterally. At the same time, the first roller and the second roller clamp the roll material from the top and bottom, forming a double fixation of lateral limiting and top and bottom clamping, which prevents the roll material from wrinkling or shifting during the conveying, heating and forming process.

[0019] 2. When the upper mold base of this utility model is pressed down, the lower pressing block pushes the lifting seat to move down, so that the roll material fits the lower mold base to complete the forming. When the upper mold base rises, the second spring drives the lifting seat to reset, pushing the roll material upward, so that the formed PET packaging is automatically separated from the lower mold base. No manual intervention is required for demolding, saving operation time. On the other hand, the formed PET packaging is continuously transported with the roll material to the subsequent cutting process, avoiding the interruption of forming-removal in single batch production, and adapting to the continuous feeding characteristics of PET roll material. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the upper mold base pressing structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model.

[0023] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model.

[0024] Figure reference numerals: 1. Base; 2. Lower mold base; 3. First guide rod; 4. Upper mold base; 5. Second guide rod; 6. Lifting seat; 7. First mounting groove; 8. Adjustment mechanism; 81. Positive and negative screws; 82. Motor; 9. Limiting mechanism; 91. Moving plate; 92. Mounting block; 93. First roller; 94. Third guide rod; 95. Lifting frame; 96. First spring; 97. Second roller; 98. Second mounting groove; 99. Third roller; 10. Second spring; 11. Positioning groove; 12. Lower pressure block; 13. Negative pressure hole; 14. Connecting pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In one embodiment, such as Figures 1-4 As shown, a PET packaging blister mold includes a base 1, a lower mold base 2 is provided on the top of the base 1, a first guide rod 3 is provided at each of the four corners of the top of the lower mold base 2, and an upper mold base 4 is slidably installed on the outside of the four first guide rods 3.

[0027] Four second guide rods 5 are provided on the top of the base 1 and on one side of the lower mold base 2. A lifting seat 6 is slidably installed on the outside of the four second guide rods 5. A first mounting groove 7 is provided on the top of the lifting seat 6. An adjustment mechanism 8 is provided inside the first mounting groove 7. Two limiting mechanisms 9 are symmetrically arranged on the outside of the adjustment mechanism 8.

[0028] In this embodiment, PET packaging typically involves moving one end of a PET roll to below a heating mechanism via a conveying mechanism. The heating mechanism softens the PET material, which is then conveyed to the top of the lower mold base 2. The top of the upper mold base 4 is connected to a hydraulic cylinder. The hydraulic cylinder moves the upper mold base 4 downwards, pressing the softened PET material into the groove of the lower mold base 2. Simultaneously, the negative pressure hole 13 inside the lower mold base 2 extracts air to create a negative pressure, ensuring that the PET material is completely fitted into the groove of the lower mold base 2. The temperature of the PET material is then rapidly reduced by the water-cooling structure of the thermoforming mold. The water-cooling structure is a conventional technique for thermoforming molds and will not be elaborated upon here.

[0029] In one embodiment, such as Figure 1 and Figure 3 As shown, the adjusting mechanism 8 includes a positive and negative screw 81, which is rotatably mounted inside the first mounting groove 7 via bearings. A motor 82 is fixedly mounted on one side of the lifting seat 6. The positive and negative screw 81 is driven by the motor 82. The rotation of the positive and negative screw 81 effectively changes the distance between the two limiting mechanisms 9. The two limiting mechanisms 9 can limit the PET roll material, so that the PET roll material will not deviate during the conveying process, thus improving the quality of thermoforming.

[0030] In one embodiment, such as Figure 1 and Figure 4 As shown, the limiting mechanism 9 includes a movable plate 91, which is threaded to the outside of the positive and negative screws 81. Mounting blocks 92 are fixedly installed on both sides of the movable plate 91. Third guide rods 94 are fixedly installed on the tops of the two mounting blocks 92. A lifting frame 95 is slidably installed on the outside of the two third guide rods 94. First springs 96 are sleeved on the outside of the two third guide rods 94 and above the lifting frame 95. First rollers 93 are rotatably installed on one side of each of the two mounting blocks 92. Second rollers 97 are rotatably installed on one side of the lifting frame 95 and above the first rollers 93. A second mounting groove 98 is formed on one side of the movable plate 91. The second mounting groove 98 has a third roller 99 mounted inside via a bearing. The formed PET packaging will not separate from the roll material, but will continue to be conveyed to the subsequent cutting process along with the roll material. Lifting the lifting frame 95 separates the second roller 97 from the first roller 93, compresses the first spring 96, and places the roll material between the second roller 97 and the first roller 93. Through the operation of the adjusting mechanism 8, the two moving plates 91 are brought closer to each other, so that the two ends of the roll material are in contact with the two third rollers 99, which limit the roll material. Slowly loosening the lifting frame 95, due to the reset action of the first spring 96, causes the lifting frame 95 to move upward, effectively clamping the two ends of the roll material and improving the stability of the roll material limit.

[0031] In one embodiment, such as Figure 1 and Figure 2 As shown, a second spring 10 is fitted on the outside of each of the four second guide rods 5 and between the lifting seat 6 and the base 1. A positioning groove 11 is provided on one side of the top of the lifting seat 6. A pressing block 12 is provided on one side of the upper mold base 4 and directly above the positioning groove 11. The pressing block 12 is adapted to the positioning groove 11. When the upper mold base 4 is pressed down, the pressing block 12 enters the interior of the positioning groove 11 and drives the lifting seat 6 to move downward. The second spring 10 is compressed, so that the roll material is in contact with the lower mold base 2. During the process of the upper mold base 4 rising, the lifting seat 6 moves upward due to the reset action of the second spring 10, thereby lifting the roll material upward and separating the PET packaging from the lower mold base 2, which facilitates continuous processing and improves work efficiency.

[0032] In one embodiment, such as Figure 1 and Figure 2 As shown, the bottom of the lower mold base 2 is provided with multiple negative pressure holes 13 at equal intervals. A connecting pipe 14 is provided on one side of the lower mold base 2, and the connecting pipe 14 is connected to the multiple negative pressure holes 13. The connecting pipe 14 is connected to the vacuum pump through the conduit. When the vacuum pump works, the negative pressure holes 13 generate suction force, thereby generating negative pressure and completing the thermoforming process of PET roll material.

[0033] The above embodiment discloses a PET packaging blister mold. In this process, one end of a PET roll is moved to the lower part of a heating mechanism via a conveying mechanism. The heating mechanism softens the PET material, and then the softened PET material is conveyed to the upper part of the lower mold base 2. The top of the upper mold base 4 is connected to a hydraulic cylinder. The hydraulic cylinder moves the upper mold base 4 downward, and the upper mold base 4 presses the softened PET material into the groove of the lower mold base 2. The lower pressing block 12 enters the interior of the positioning groove 11 and moves the lifting seat 6 downward. The second spring 10 is compressed, so that the roll material fits into the lower mold base 2.

[0034] At the same time, the negative pressure hole 13 inside the lower mold base 2 draws out air to form a negative pressure, so that the PET material is completely in contact with the groove of the lower mold base 2. Then, the temperature of the PET material is quickly reduced by the water cooling structure of the blister mold. During the process of the upper mold base 4 rising, the lifting seat 6 moves upward due to the reset action of the second spring 10, which in turn lifts the roll material upward, so that the PET packaging is separated from the lower mold base 2, which facilitates continuous processing and improves work efficiency. Through the cooperation of the adjustment mechanism 8 and the limiting mechanism 9, both ends of the roll material are limited to prevent the roll material from deviating during the conveying process and improve the stability of blister packaging.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A PET packaging blister mold, comprising a base (1), the top of the base (1) is provided with a lower mold base (2), the top of the lower mold base (2) is provided with a first guide rod (3) at each corner, the outside of the four first guide rods (3) is slidably installed with an upper mold base (4); characterized in that The top of the base (1) and one side of the lower mold base (2) are provided with four second guide rods (5), the outside of the four second guide rods (5) is slidably installed with a lifting seat (6), the top of the lifting seat (6) is provided with a first installation slot (7), the inside of the first installation slot (7) is provided with an adjusting mechanism (8), and the outside of the adjusting mechanism (8) is provided with two limiting mechanisms (9) symmetrically.

2. The PET packaging blister mold according to claim 1, wherein, The adjusting mechanism (8) comprises a reversible screw rod (81), the reversible screw rod (81) is rotatably installed in the first installation slot (7) through a bearing, one side of the lifting seat (6) is fixedly installed with a motor (82), and the reversible screw rod (81) is driven by the motor (82).

3. A PET packaging blister mold according to claim 2, characterized in that, The limiting mechanism (9) comprises a moving plate (91), the moving plate (91) is threadedly connected outside the reversible screw rod (81), and the outside of the moving plate (91) is fixedly installed with a mounting block (92) on both sides.

4. The PET packaging blister mold according to claim 3, wherein, Two third guide rods (94) are fixedly installed on the top of each of the two mounting blocks (92), and two lifting frames (95) are slidably installed outside the two third guide rods (94).

5. The PET packaging blister mold according to claim 3, wherein, A first spring (96) is sleeved outside the two third guide rods (94) and above the lifting frame (95).

6. The PET packaging blister mold according to claim 1, wherein, A first roller (93) is rotatably installed on one side of each of the two mounting blocks (92), and a second roller (97) is rotatably installed on one side of the lifting frame (95) and above the first roller (93).

7. The PET packaging blister mold according to claim 1, wherein, A second installation slot (98) is formed in one side of the moving plate (91), and a third roller (99) is rotatably installed in the second installation slot (98) through a bearing.

8. The PET packaging blister mold according to claim 1, wherein, A second spring (10) is sleeved outside each of the four second guide rods (5) and between the lifting seat (6) and the base (1). A positioning groove (11) is formed in one side of the top of the lifting seat (6), a pressing block (12) is arranged on one side of the upper mold base (4) and directly above the positioning groove (11), and the pressing block (12) is matched with the positioning groove (11). A plurality of negative pressure holes (13) are equidistantly formed in the bottom of the inside of the lower mold base (2), and a connecting pipe (14) is arranged on one side of the lower mold base (2) and in communication with the plurality of negative pressure holes (13).

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