Innovative forming mechanism of roll plate bubble cap machine

Abstract

The invention discloses an innovative forming mechanism of a roller plate bubble cap machine, and belongs to the technical field of packaging, the innovative forming mechanism comprises a heating plate mechanism and a forming mechanism, the forming mechanism comprises a forming cover plate, an auxiliary forming cylinder is arranged on the forming cover plate, and the telescopic end of the auxiliary forming cylinder penetrates out of the forming cover plate and then is connected with a pre-forming mold; a forming upper die is arranged below the pre-forming die in a sliding manner; a cooling water hole and an air inlet hole communicated with the punch are formed in the side wall of the upper die cold water plate; a plurality of forming stand columns are symmetrically arranged on the lower end face of the forming cover plate, a forming guide plate is arranged on the forming stand columns in a sliding mode, a forming lower die matched with the forming upper die is arranged at the upper end of the forming guide plate, a lower die cold water plate is arranged between the forming lower die and the forming guide plate, and a lower die air inlet hole is formed in the side wall of the forming lower die. The roll plate bubble cap machine can efficiently and stably form bubble caps which cannot be satisfactorily formed by flat blowing in the prior art according to different materials and different bubble types.

Description

Technical Field

[0001] The invention relates to the technical field of packaging, and in particular to an innovative forming mechanism of a roller blister machine. Background Art

[0002] With the increasing application of roller blister packaging machines in the pharmaceutical industry, roller blister packaging machines are no longer just used to package capsules, tablets, soft capsules and other medicines, but are now also used to package medical devices, foods and other different packaging materials. Due to its fast packaging speed and high efficiency, it has also been gradually applied to the packaging of other special blisters to replace the previous slower blister machines. For different products, the required blister shapes and packaging materials used to package the products are also different. Traditional roller packaging machines have become increasingly difficult to meet the packaging needs of pharmaceutical companies, and more and more innovative designs are needed to meet the packaging of different products. For example, for some materials with large shrinkage or blisters located at corners, they are prone to wrinkling and the molding is not full. Based on this, the present invention proposes an innovative molding mechanism for a roller blister machine to solve the problem of the difficulty of roller blister packaging machines in blistering with different packaging materials and different bubble types. Summary of the invention

[0003] The object of the present invention is to provide an innovative forming mechanism for a roller blister machine to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The invention discloses an innovative forming mechanism of a roller blister machine, comprising a heating plate mechanism and a forming mechanism. The packaging material is heated and softened by the heating plate mechanism under the action of traction, and then enters the forming mechanism for blow molding.

[0006] The forming mechanism comprises a forming cover plate, an auxiliary forming cylinder is arranged at the center position of the upper end of the forming cover plate, the telescopic end of the auxiliary forming cylinder passes through the forming cover plate and is connected to the preforming mold, a forming upper mold matching with the preforming mold is slidably arranged below the preforming mold, the forming upper mold comprises an installation cavity for placing the preforming mold, a plurality of guide pillars are symmetrically arranged in the installation cavity, a plurality of bushings slidably connected with the guide pillars are provided on the preforming mold, and the guide pillars and bushings cooperate with each other. Slide up and down; the preforming mold and the bottom of the installation cavity are connected together by a number of springs; the upper end of the forming upper mold is fixedly connected to the upper mold fixing plate, and the upper end of the upper mold fixing plate is sequentially provided with an upper mold cold water plate cover plate and an upper mold cold water plate, and the upper mold cold water plate is fixedly connected to the bottom of the forming cover plate; the punch of the preforming mold passes through the hole on the forming upper mold and is located at the lower position of the forming upper mold; the side wall of the upper mold cold water plate is provided with a cooling water hole and an air inlet hole connected with the punch;

[0007] A plurality of forming columns are symmetrically arranged on the lower end surface of the forming cover plate, a forming guide plate is slidably arranged on the forming column, a forming lower die matching with the forming upper die is arranged on the upper end of the forming guide plate, a lower die cold water plate is arranged between the forming lower die and the forming guide plate, and a lower die air inlet hole is arranged on the side wall of the forming lower die; the bottom of the forming column is fixedly connected to the forming cam box, and an upper and lower driving mechanism is arranged between the forming guide plate and the forming cam box.

[0008] Furthermore, a cylinder piston is arranged at the center position of the upper end of the preforming mold, and a cylinder connecting rod matching with the cylinder piston is arranged at the telescopic end of the auxiliary forming cylinder.

[0009] Furthermore, the cylinder piston comprises a piston body, a slot is provided in the middle of the piston body, and slots are symmetrically provided at both ends of the slot; a connector matching the slot and the slot is provided at the bottom of the cylinder connecting rod.

[0010] Furthermore, the diameter of the connector is smaller than the aperture of the slot and larger than the width of the slot.

[0011] Furthermore, a through hole for the telescopic end of the auxiliary forming cylinder to pass through is opened at the center position of the upper mold cold water plate, the upper mold cold water plate cover plate and the upper mold fixed plate.

[0012] Furthermore, the upper and lower driving mechanism includes a forming roller device arranged together with the bottom of the forming guide plate; a forming cam is arranged inside the forming cam box, and the forming cam is connected to the driving device through a forming spline, and the forming cam cooperates with the forming roller device.

[0013] Furthermore, the heating plate mechanism comprises upper and lower heating plates which are symmetrically distributed up and down, and heating plate molds are symmetrically arranged on opposite surfaces of the upper and lower heating plates.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] The roller blister machine of the present invention, under the auxiliary molding effect of the preforming mold, presses the pre-heated packaging material into the formed lower film blister driven by the auxiliary molding cylinder, and then cooperates with the air inlet (positive pressure) blowing and the negative pressure blister of the lower mold air inlet to participate in the blistering process at the same time, so that the blister is round and crisply formed to achieve the effect of complete blistering. In addition, the blistering area is heated by the heating plate mold to reduce the heated area of ​​the packaging material, thereby reducing the overall shrinkage of the material, avoiding wrinkles, and achieving an ideal molding effect. In short, the roller blister machine of the present invention can be used for different materials and different bubble types, and can efficiently and stably mold blisters that cannot be satisfactorily molded by flat blowing in the past. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a front view of the innovative forming mechanism of the roller blister machine of the present invention;

[0018] Figure 2 It is the exploded diagram of the forming mechanism;

[0019] Figure 3 It is a schematic diagram of the cylinder piston structure;

[0020] Figure 4 It is a schematic diagram of the upper die structure;

[0021] Figure 5 This is the structure diagram of the air intake hole position;

[0022] Figure 6 This is the structural diagram of the position of the air inlet hole of the lower die;

[0023] Description of the accompanying drawings: 1. auxiliary forming cylinder; 2. forming cover plate; 3. cylinder connecting rod; 4. cylinder piston; 5. preforming mold; 6. upper mold cold water plate; 7. upper mold cold water plate cover plate; 8. upper mold fixing plate; 9. forming upper mold; 10. forming lower mold; 11. lower mold cold water plate; 12. forming column; 13. forming guide plate; 14. air inlet hole; 15. cooling water hole; 16. lower mold air inlet hole; 17. forming spline; 18. forming cam; 19. forming roller device; 20. forming cam box; 21. heating plate mold; 22. upper and lower heating plates;

[0024] 301, connecting rod head;

[0025] 401, piston body; 402, slot; 403, slot;

[0026] 901, mounting cavity; 902, guide column; 903, spring. DETAILED DESCRIPTION

[0027] like Figure 1As shown, an innovative forming mechanism of a roller blister machine includes a heating plate mechanism and a forming mechanism. The packaging material is heated and softened by the heating plate mechanism under traction, and then enters the forming mechanism for blow molding. The heating plate mechanism includes upper and lower heating plates 22 symmetrically distributed up and down, and heating plate molds 21 are symmetrically installed on the opposite surfaces of the upper and lower heating plates 22. The layout of the heating plate mold 21 corresponds to the forming mold one by one. The heating plate mold 21 only heats the area where the blister is formed, and the ribs between the blister eyes and the intervals between the plates are not heated. In this way, the heating area of ​​the packaging material can be reduced, and the shrinkage area can be reduced, thereby greatly reducing the overall shrinkage of the packaging material, avoiding wrinkling and deformation, and facilitating the formed blisters to enter the next process smoothly.

[0028] like Figure 2-6 As shown, the molding mechanism includes a molding cover plate 2, and an auxiliary molding cylinder 1 is installed at the center position of the upper end of the molding cover plate 2. The telescopic end of the auxiliary molding cylinder 1 passes through the molding cover plate 2 and is connected to the pre-molding mold 5. The molding upper mold 9 that matches it can be slidably installed below the pre-molding mold 5. The molding upper mold 9 includes an installation cavity 901 for placing the pre-molding mold 5, and the height of the installation cavity 901 is higher than the height of the pre-molding mold 5. Several guide pillars 902 are symmetrically installed in the installation cavity 901, and the pre-molding mold 5 is provided with several bushings that are slidably connected to the guide pillars 902. The guide pillars 902 and the bushings cooperate with each other and slide up and down to prevent the mold from shifting, ensuring that the bubble eyes correspond one to one and the depth is consistent. The pre-molding mold 5 and the bottom of the installation cavity 901 are connected together by several springs 903, and the springs 903 prevent collisions and damage to the mold.

[0029] The upper end of the forming upper die 9 is fixedly connected to the upper die fixing plate 8, and the upper end of the upper die fixing plate 8 is sequentially installed with the upper die cold water plate cover plate 7 and the upper die cold water plate 6, and the upper die cold water plate 6 is fixedly connected to the bottom of the forming cover plate 2. A through hole for the telescopic end of the auxiliary forming cylinder 1 to pass through is provided at the center of the upper die cold water plate 6, the upper die cold water plate cover plate 7 and the upper die fixing plate 8. After the punch of the preforming mold 5 passes through the hole on the forming upper die 9, it is located at the lower position of the forming upper die 9. The side wall of the upper die cold water plate 6 is provided with a brown cooling water hole 15 and an air inlet 14 connected to the punch. The air inlet 14 is used for positive pressure air intake to blow out full blisters one by one.

[0030] A plurality of forming columns 12 are symmetrically mounted on the lower end surface of the forming cover plate 2, a forming guide plate 13 is slidably mounted on the forming column 12, a forming lower die 10 matching the forming upper die 9 is mounted on the upper end of the forming guide plate 13, a lower die cold water plate 11 is mounted between the forming lower die 10 and the forming guide plate 13, and a lower die air inlet 16 is mounted on the side wall of the forming lower die 10, which is used to form negative pressure adsorption with the help of a vacuum generator, and cooperate with positive pressure blowing to participate in the foaming process at the same time, so as to achieve a complete foaming effect. The bottom of the forming column 12 is fixedly connected to the forming cam box 20, and an upper and lower driving mechanism is installed between the forming guide plate 13 and the forming cam box 20.

[0031] A cylinder piston 4 is installed at the center position of the upper end of the preforming mold 5, and a cylinder connecting rod 3 matching with the cylinder piston 4 is installed at the telescopic end of the auxiliary forming cylinder 1. The cylinder piston 4 includes a piston body 401, a slot 403 is provided at the middle position of the piston body 401, and slots 402 are symmetrically provided at both ends of the slot 403; a connector 301 matching with the slot 402 and the slot 403 is installed at the bottom of the cylinder connecting rod 3. Among them, the diameter of the connector 301 is smaller than the aperture of the slot 402, and larger than the width of the slot 403. Specifically, after the cylinder connecting rod 3 enters the slot 402, it moves to the slot 403 position, and can be quickly disassembled, which is convenient to operate.

[0032] The up-and-down driving mechanism includes a forming roller device 19 installed together with the bottom of the forming guide plate 13. A forming cam 18 is installed inside the forming cam box 20, and the forming cam 18 is connected to the driving device through the forming spline 17. The forming cam 18 cooperates with the forming roller device 19. By driving the forming cam 18 to rotate, the forming roller device 19 moves up and down, and then drives the forming lower mold 10 to move up and down to meet the forming operation.

[0033] The action process of the present invention is as follows:

[0034] First, the upper and lower heating plates 22 heat and soften the packaging material, and the traction device pulls the packaging material to the forming mechanism; then, the driving device (such as a reduction motor, etc.) drives the spline shaft 17 to rotate, driving the forming cam 18 to move together, and the forming cam 18 drives the forming roller device 19 to move up and down under the guidance of the forming column 12, so that the forming lower mold 10 moves up and down; finally, the forming lower mold 10 forms a closed chamber at the highest point of the forming cam 18 and the fixed forming upper mold 9, and cooperates with the air inlet hole 14 to intake air with positive pressure, so as to blow out full blisters on the packaging material;

[0035] When encountering a bubble shape that is difficult to blow flat, before positive pressure blowing, the auxiliary forming cylinder 1 first drives the preforming mold 5 to move downward, so that the punch extrude a certain shape on the packaging material that has been softened by heat, and then positive pressure blowing is performed to make the formed blister fit completely with the bubble eye of the forming lower mold 10, thereby ensuring that each blister is full and crisp; in addition, if blistering is still difficult due to the particularity of the packaging material or the particularity of the blister, a vacuum generator is connected to the lower mold air inlet 16 of the forming lower mold 10 to form negative pressure adsorption, that is, the auxiliary mold preforming, positive pressure blowing, and negative pressure blistering are simultaneously involved in the blistering process to achieve a complete blistering effect;

[0036] When encountering some packaging materials with relatively large shrinkage (such as PP), heating the entire piece of material will cause the packaging material to shrink and narrow seriously. At this time, during the heating process, a heating plate mold 21 is assembled on the upper and lower heating plates 22, and the layout of the heating plate mold 21 corresponds to the forming mold one by one. The area where the blister is formed is heated, and the ribs between the blisters and the intervals between the plates are not heated, thereby reducing the heated area of ​​the packaging material and the shrinkage site, thereby greatly reducing the overall shrinkage of the packaging material, avoiding wrinkling and deformation, and facilitating the formed blisters to smoothly enter the next process.

[0037] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An innovative forming mechanism of a roller blister machine, characterized in that: It includes a heating plate mechanism and a molding mechanism. The packaging material is heated and softened by the heating plate mechanism under the action of traction, and then enters the molding mechanism for blow molding; The molding mechanism comprises a molding cover plate (2), an auxiliary molding cylinder (1) is arranged at the center position of the upper end of the molding cover plate (2), the telescopic end of the auxiliary molding cylinder (1) passes through the molding cover plate (2) and is connected to the pre-molding mold (5), a molding upper mold (9) matching with the pre-molding mold (5) is slidably arranged below the pre-molding mold (5), the molding upper mold (9) comprises a mounting cavity (901) for placing the pre-molding mold (5), a plurality of guide pillars (902) are symmetrically arranged in the mounting cavity (901), a plurality of bushings slidably connected to the guide pillars (902) are provided on the pre-molding mold (5), and the guide pillars (902) and the bushings are matched with each other. The preforming mold (5) and the bottom of the installation cavity (901) are connected together by a plurality of springs (903); the upper end of the upper forming mold (9) is fixedly connected to the upper mold fixing plate (8), and the upper end of the upper mold fixing plate (8) is provided with an upper mold cold water plate cover plate (7) and an upper mold cold water plate (6) in sequence, and the upper mold cold water plate (6) is fixedly connected to the bottom of the forming cover plate (2); the punch of the preforming mold (5) passes through the hole on the upper forming mold (9) and is located below the upper forming mold (9); the side wall of the upper mold cold water plate (6) is provided with a cooling water hole (15) and an air inlet hole (14) connected to the punch; A plurality of forming columns (12) are symmetrically arranged on the lower end surface of the forming cover plate (2), a forming guide plate (13) is slidably arranged on the forming column (12), a forming lower die (10) matched with the forming upper die (9) is arranged on the upper end of the forming guide plate (13), a lower die cold water plate (11) is arranged between the forming lower die (10) and the forming guide plate (13), and a lower die air inlet hole (16) is arranged on the side wall of the forming lower die (10); the bottom of the forming column (12) is fixedly connected to the forming cam box (20), and an upper and lower driving mechanism is arranged between the forming guide plate (13) and the forming cam box (20).

2. The innovative forming mechanism of the roller blister machine according to claim 1 is characterized in that: A cylinder piston (4) is arranged at the center position of the upper end of the preforming mold (5), and a cylinder connecting rod (3) matching with the cylinder piston (4) is arranged at the telescopic end of the auxiliary forming cylinder (1).

3. The innovative forming mechanism of the roller blister machine according to claim 2 is characterized in that: The cylinder piston (4) comprises a piston body (401), a slot (403) is provided in the middle of the piston body (401), and slot holes (402) are symmetrically provided at both ends of the slot (403); a connector (301) matching the slot hole (402) and the slot (403) is provided at the bottom of the cylinder connecting rod (3).

4. The innovative forming mechanism of the roller blister machine according to claim 3 is characterized by: The diameter of the connector (301) is smaller than the aperture of the slot (402) and larger than the width of the slot (403).

5. The innovative forming mechanism of the roller blister machine according to claim 1 is characterized in that: A through hole for the telescopic end of the auxiliary molding cylinder (1) to pass through is provided at the center of the upper mold cold water plate (6), the upper mold cold water plate cover plate (7) and the upper mold fixing plate (8).

6. The innovative forming mechanism of the roller blister machine according to claim 1 is characterized by: The up-and-down driving mechanism comprises a forming roller device (19) arranged together with the bottom of the forming guide plate (13); a forming cam (18) is arranged inside the forming cam box (20), and the forming cam (18) is connected to the driving device through a forming spline (17), and the forming cam (18) and the forming roller device (19) cooperate with each other.

7. The innovative forming mechanism of the roller blister machine according to claim 1 is characterized by: The heating plate mechanism comprises upper and lower heating plates (22) which are symmetrically distributed up and down, and heating plate moulds (21) are symmetrically arranged on the opposite surfaces of the upper and lower heating plates (22).

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