Hot air circulation device for blister cover

Abstract

The utility model belongs to the technical field of blister, and particularly relates to a hot air circulation device for a blister cover, which comprises a box body and support columns, the support columns are fixedly connected to four corners of the lower side of the box body, a box door is hinged to the front end of the box body through hinges, and a processing mechanism is connected inside the box body. When the hot air circulation device for the blister cover is used, firstly, a product raw material to be subjected to blister is placed in the mold cavity at the upper end of the lower mold, then the box door is closed, then the fan is started to blow out air, the air flows through the resistance wire to be heated to form hot air flow to the product on the lower mold, and the product is softened; after the product is machined, the telescopic piece is started again to lift the upper mold, then a pull rod is pulled leftwards to drive an insertion rod to move leftwards to the inner side of a circular groove, and then a handle is pulled forwards to drive a sealing plate to rotate to be away from a material taking groove; and then the formed product is taken through the material taking groove.

Description

Technical Field

[0001] The utility model relates to the technical field of blister packaging, in particular to a hot air circulation device for a blister packaging cover. Background Art

[0002] Blister is a plastic processing technology. The main principle is to heat and soften the flat plastic hard sheet, then use vacuum to absorb it to the mold surface, and then cool it to form. It is widely used in plastic packaging, lighting, advertising, decoration and other industries. It is a general term for plastic products produced by blister technology and packaged with corresponding equipment. The packaged products are transparent and visible, with beautiful appearance, easy to sell, and suitable for mechanized and automated packaging, which is convenient for modern management. Blister products are processed with plastic. The product production principle is to heat and soften the flat plastic hard sheet material, then use vacuum to absorb it to the mold surface, and then cool it to form.

[0003] The main advantages of blister products on the market are saving raw and auxiliary materials, light weight, convenient transportation, good sealing performance, and meeting the requirements of environmentally friendly green packaging. However, for the production and processing of blister covers, since the plastic needs to be heated to be soft during blistering, a large amount of heat energy is consumed, which increases the economic burden.

[0004] For example, a hot air circulation device for blister cover disclosed in Chinese patent CN208180222U has a simple structure and is easy to operate. While negative pressure is formed at the bottom of the plastic film through the rotation of the fan blades, the pressure at the top of the plastic film is also increased, thereby increasing the speed of blister forming, improving work efficiency, reducing the economic loss caused by the long heating time of the resistance wire, and saving costs.

[0005] However, the mold in the hot air circulation device for the blister cover is not easy to disassemble, so that the mold cannot be quickly replaced to process different workpieces.

[0006] For this reason, we urgently need to provide a blister cover hot air circulation device that is convenient for disassembling and assembling the mold. Utility Model Content

[0007] The utility model aims to provide a hot air circulation device for blister covers, so as to solve the problem in the background art that the mold in the hot air circulation device for blister covers is not easy to disassemble, so that the mold cannot be quickly replaced to process different workpieces.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot air circulation device for blister covers, comprising a box body and support columns, the support columns are fixedly connected to the four corners of the lower side of the box body, the front end of the box body is hinged with a box door by a hinge, the interior of the box body is connected to a processing mechanism, the processing mechanism comprises a processing unit and a material taking unit, the processing unit is arranged inside the box body, and the material taking unit is arranged inside the box door.

[0009] The processing unit includes a telescopic part, a connecting plate, an upper mold, a connecting platform, a lower mold, a threaded rod, a nut, a fan, a fixed plate and a resistance wire. The telescopic part is fixedly connected to the middle position of the upper side of the box, the connecting plate is fixedly connected to the lower end of the output shaft of the telescopic part, the upper mold is connected to the lower side of the connecting plate, the connecting platform is fixedly connected to the inner bottom end of the box, the lower mold is connected to the upper end of the connecting platform, the threaded rod is fixedly connected to the upper four corners of the upper mold and the lower four corners of the lower mold, the nut is threadedly connected to the outside of the threaded rod, the fan is fixedly connected to the middle position of the left and right ends of the inner side of the box, the fixed plate is fixedly connected to the left and right ends of the inner side of the box located in front and behind the fan, and the resistance wire is fixedly connected to one end of the adjacent side of the fixed plate on the same side away from the box.

[0010] A further improvement is that circular holes are opened at the four inner corners of the connecting plate and the four inner corners of the connecting platform, the outer side of the threaded rod is slidably connected to the inner side of the circular hole, and the outer side of the nut abuts against the upper side of the connecting plate and the lower side of the connecting platform, so that after the nut is threadedly connected to the outer side of the threaded rod so that the nut contacts the connecting plate and the upper side and the lower side of the connecting platform, the upper mold can be fixed to the lower side of the connecting plate and the lower mold can be fixed to the upper side of the connecting platform.

[0011] A further improvement is that the airflow blown by the fan is blown toward the mold cavity of the lower mold through the resistance wire, so that after the product to be vacuum-formed is placed in the mold cavity above the lower mold, the fan can be started to blow out airflow that is heated by the resistance wire to form a hot air flow onto the product above the lower mold, thereby softening the product.

[0012] A further improvement is that the material picking unit includes a round shaft, a closing plate, a handle, a spring, an insertion rod and a pull rod, the round shaft is connected to the inside of the box door, the closing plate is connected to the outer end of the round shaft, the handle is fixedly connected to the front right end of the closing plate, the spring is connected to the inner right end of the closing plate, the insertion rod is fixedly connected to the right end of the spring, and the pull rod is fixedly connected to the front of the outer left end of the insertion rod.

[0013] A further improvement is that a material extraction trough is provided in the middle position inside the box door, a rotating hole is provided in the middle position inside the left end of the sealing plate, the outer side of the circular axis is rotatably connected to the inner side of the rotating hole, and the outer side of the sealing plate is slidably connected to the inner side of the material extraction trough, so that the sealing plate can be located in the material extraction trough and rotate around the circular axis to open the material extraction trough.

[0014] A further improvement is that a circular groove is provided in the middle of the inner right end of the sealing plate, the left end of the spring is fixedly connected to the inner left end of the circular groove, and the outer side of the insertion rod is slidably connected to the inner side of the circular groove, so that when the spring bounces, the insertion rod can be driven to slide along the inner side of the circular groove.

[0015] A further improvement is that a socket is provided inside the box door at the middle position on the right side of the material extraction trough, and a slide groove is provided inside the closing plate at the front end of the circular groove. The outer side of the right end of the insertion rod is plugged into the inner side of the socket, and the outer side of the pull rod is slidably connected with the inner side of the slide groove, so that by first pulling the pull rod to the left to drive the insertion rod to move to the inside of the circular groove, and then pulling the handle forward can drive the closing plate to rotate around the circular axis away from the material extraction trough, so that material can be placed on the lower mold through the material extraction trough.

[0016] In summary, the present application discloses a hot air circulation device for blister covers.

[0017] According to the technical solution, after the nut on the outside of the threaded rod is removed from the outside of the threaded rod by rotating the nut, the upper mold can be pulled down or the lower mold can be pulled up so that the threaded rod slides out of the round hole, and the upper mold and the lower mold can be removed from the device. Then, the threaded rods on the outside of the new upper mold and the lower mold are slid into the round holes, and then the nut is threadedly connected to the outside of the threaded rod so that the nut contacts the connecting plate and the upper side and the lower side of the connecting platform. After that, the upper mold can be fixed to the lower side of the connecting plate, and the lower mold can be fixed to the upper side of the connecting platform, thereby completing the replacement of the upper mold and the lower mold.

[0018] Furthermore, by first pulling the pull rod to the left to drive the insertion rod to move to the left to the inner side of the circular groove, and then pulling the handle forward to drive the sealing plate to rotate around the circular axis away from the material taking groove, the material can be placed on the lower mold through the material taking groove, and only the sealing plate is opened when taking the material, which can reduce the heat damage in the box and play a role in hot air circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the box of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the upper mold of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the connecting platform of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the box door of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the rod insertion part of the utility model.

[0025] In the figure: 1. box body; 2. support column; 3. box door; 401. telescopic part; 402. connecting plate; 403. upper mold; 404. connecting platform; 405. lower mold; 406. threaded rod; 407. nut; 408. fan; 409. fixing plate; 410. resistance wire; 501. round shaft; 502. closing plate; 503. handle; 504. spring; 505. plug rod; 506. pull rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 6 , the utility model provides a technical solution: Embodiment 1

[0028] A hot air circulation device for blister covers comprises a box body 1 and support columns 2, wherein the support columns 2 are fixedly connected to the four lower corners of the box body 1, a box door 3 is hinged at the front end of the box body 1, a processing mechanism is connected to the interior of the box body 1, the processing mechanism comprises a processing unit and a material taking unit, the processing unit is arranged inside the box body 1, and the material taking unit is arranged inside the box door 3.

[0029] The processing unit includes a telescopic member 401, a connecting plate 402, an upper mold 403, a connecting platform 404, a lower mold 405, a threaded rod 406, a nut 407, a fan 408, a fixing plate 409 and a resistance wire 410. The telescopic member 401 is fixedly connected to the middle position of the upper side of the box body 1, the connecting plate 402 is fixedly connected to the lower end of the output shaft of the telescopic member 401, the upper mold 403 is connected to the lower side of the connecting plate 402, and the connecting platform 404 is fixedly connected to the inner bottom end of the box body 1. The lower mold 405 is connected to the upper end of the connecting platform 404, the threaded rod 406 is fixedly connected to the upper four corners of the upper mold 403 and the lower four corners of the lower mold 405, the nut 407 is threadedly connected to the outer side of the threaded rod 406, and circular holes are opened at the inner four corners of the connecting plate 402 and the inner four corners of the connecting platform 404. The outer side of the threaded rod 406 is slidably connected to the inner side of the circular hole, and the outer side of the nut 407 abuts against the upper side of the connecting plate 402 and the lower side of the connecting platform 404. Thus, when the upper mold 403 is placed on the lower side of the connecting plate 402 and the lower mold 405 is placed on the upper side of the connecting platform 404, the threaded rod 406 will slide into the round hole, and then the nut 407 will be threadedly connected to the outer side of the threaded rod 406 so that the nut 407 contacts the upper side of the connecting plate 402 and the lower side of the connecting platform 404. Then, the upper mold 403 can be fixed to the lower side of the connecting plate 402, and the lower mold 405 can be fixed to the upper side of the connecting platform 404.

[0030] The fan 408 is fixedly connected to the middle position of the left and right ends of the inner side of the box body 1, the fixed plate 409 is fixedly connected to the positions of the left and right ends of the inner side of the box body 1 located in front and behind the fan 408, and the resistance wire 410 is fixedly connected to the end of the adjacent side of the fixed plate 409 on the same side away from the box body 1. The airflow blown by the fan 408 passes through the resistance wire 410 and blows to the mold cavity of the lower mold 405. Therefore, after the product to be blistered is placed in the mold cavity above the lower mold 405, the fan 408 can be started to blow out the airflow to heat the resistance wire 410 to form a hot air flow to the product above the lower mold 405, so as to soften the product. Embodiment 2

[0031] On the basis of the first embodiment: the material taking unit comprises a circular shaft 501, a sealing plate 502, a handle 503, a spring 504, an insert rod 505 and a pull rod 506, the circular shaft 501 is connected to the inside of the box door 3, the sealing plate 502 is connected to the outer end of the circular shaft 501, a material taking slot is provided in the middle position of the inside of the box door 3, a rotating hole is provided in the middle position of the left end of the sealing plate 502, the outer side of the circular shaft 501 is rotatably connected to the inner side of the rotating hole, and the outer side of the sealing plate 502 is slidably connected to the inner side of the material taking slot. Thus, the sealing plate 502 can be located in the material taking slot and rotate around the circular shaft 501 to unseal the material taking slot.

[0032] The handle 503 is fixedly connected to the front right end of the sealing plate 502, the spring 504 is connected to the inner right end of the sealing plate 502, the plug rod 505 is fixedly connected to the right end of the spring 504, and the pull rod 506 is fixedly connected to the front of the outer left end of the plug rod 505. A circular groove is provided in the middle of the inner right end of the sealing plate 502, the left end of the spring 504 is fixedly connected to the inner left end of the circular groove, and the outer side of the plug rod 505 is slidably connected to the inner side of the circular groove. Therefore, when the spring 504 bounces, it can drive the plug rod 505 to slide along the inner side of the circular groove, thereby limiting the movement of the plug rod 505.

[0033] The box door 3 has an insertion hole in the middle of the right side of the material taking slot, and the sealing plate 502 has a sliding slot in the front end of the circular slot. The outer side of the right end of the insertion rod 505 is plugged into the inner side of the insertion hole, and the outer side of the pull rod 506 is slidably connected with the inner side of the sliding slot. Therefore, by pulling the pull rod 506 to the left to drive the insertion rod 505 to move to the inner side of the circular slot, and then pulling the handle 503 forward, the sealing plate 502 can be driven to rotate around the circular axis 501 away from the material taking slot, so that the material can be placed on the lower mold 405 through the material taking slot, and only the sealing plate 502 is opened when taking the material, so that the heat damage in the box body 1 is reduced, and the effect of hot air circulation is achieved.

[0034] Working principle: When in use, first place the raw materials of the product to be blistered in the mold cavity at the upper end of the lower mold 405, then close the box door 3, then start the fan 408 to blow out the air flow through the resistance wire 410 to heat the air to form a hot air flow to the product on the lower mold 405 to soften the product, then start the telescopic part 401 to drive the connecting plate 402 at the lower end to move so that the upper mold 403 moves to the upper end of the lower mold 405, so that the product is formed. After the product processing is completed, start the telescopic part 401 again to lift the upper mold 403, then pull the pull rod 506 to the left to drive the insertion rod 505 to move to the left to the inside of the circular groove, then pull the handle 503 forward to drive the sealing plate 502 to rotate around the circular axis 501 away from the material taking slot, and then take the formed product through the material taking slot.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A hot air circulation device for a blister cover, comprising a box body (1) and a support column (2), wherein the support column (2) is fixedly connected to the four corners of the lower side of the box body (1), and is characterized in that: The front end of the box body (1) is hingedly connected to a box door (3), the interior of the box body (1) is connected to a processing mechanism, the processing mechanism comprises a processing unit and a material taking unit, the processing unit is arranged inside the box body (1), and the material taking unit is arranged inside the box door (3); The processing unit comprises a telescopic member (401), a connecting plate (402), an upper die (403), a connecting platform (404), a lower die (405), a threaded rod (406), a nut (407), a fan (408), a fixing plate (409) and a resistance wire (410), wherein the telescopic member (401) is fixedly connected to the middle position of the upper side of the box body (1), the connecting plate (402) is fixedly connected to the lower end of the output shaft of the telescopic member (401), the upper die (403) is connected to the lower side of the connecting plate (402), the connecting platform (404) is fixedly connected to the inner bottom end of the box body (1), and the The lower mold (405) is connected to the upper end of the connecting platform (404), the threaded rod (406) is fixedly connected to the upper four corners of the upper mold (403) and the lower four corners of the lower mold (405), the nut (407) is threadedly connected to the outer side of the threaded rod (406), the fan (408) is fixedly connected to the middle position of the left and right ends of the inner side of the box body (1), the fixed plate (409) is fixedly connected to the left and right ends of the inner side of the box body (1) at the front and rear of the fan (408), and the resistance wire (410) is fixedly connected to one end of the adjacent side of the fixed plate (409) on the same side away from the box body (1).

2. A hot air circulation device for blister cover according to claim 1, characterized in that: Circular holes are provided at the four inner corners of the connecting plate (402) and the four inner corners of the connecting platform (404); the outer sides of the threaded rods (406) are slidably connected to the inner sides of the circular holes; and the outer sides of the nuts (407) are in contact with the upper side of the connecting plate (402) and the lower side of the connecting platform (404).

3. A hot air circulation device for blister cover according to claim 1, characterized in that: The airflow blown out by the fan (408) passes through the resistance wire (410) and blows toward the mold cavity of the lower mold (405).

4. A hot air circulation device for blister cover according to claim 1, characterized in that: The material taking unit comprises a circular shaft (501), a sealing plate (502), a handle (503), a spring (504), an insertion rod (505) and a pull rod (506), wherein the circular shaft (501) is connected to the inside of the box door (3), the sealing plate (502) is connected to the outer end of the circular shaft (501), the handle (503) is fixedly connected to the front right end of the sealing plate (502), the spring (504) is connected to the inner right end of the sealing plate (502), the insertion rod (505) is fixedly connected to the right end of the spring (504), and the pull rod (506) is fixedly connected to the front of the outer left end of the insertion rod (505).

5. A hot air circulation device for blister cover according to claim 4, characterized in that: A material taking trough is provided in the middle of the interior of the box door (3), a rotating hole is provided in the middle of the left end of the interior of the sealing plate (502), the outer side of the circular shaft (501) is rotatably connected to the inner side of the rotating hole, and the outer side of the sealing plate (502) is slidably connected to the inner side of the material taking trough.

6. A hot air circulation device for blister cover according to claim 4, characterized in that: A circular groove is provided in the middle of the right end of the sealing plate (502), the left end of the spring (504) is fixedly connected to the inner left end of the circular groove, and the outer side of the insertion rod (505) is slidably connected to the inner side of the circular groove.

7. A hot air circulation device for blister cover according to claim 4, characterized in that: The box door (3) has an insertion hole in the middle of the right side of the material taking trough, and the sealing plate (502) has a sliding groove in the front end of the circular groove. The outer side of the right end of the insertion rod (505) is plugged into the inner side of the insertion hole, and the outer side of the pull rod (506) is slidably connected to the inner side of the sliding groove.

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