Blister packaging mold with quick demolding structure

Abstract

The utility model relates to the field of packing mould especially a blister packing mould with quick demoulding structure, include: conveying device are provided with conveyer belt, lower mould, install on the upper surface of conveying device, the upper surface fixed connection of lower mould has model, support, install on the upper surface of conveying device, the side surface fixed connection of support has telescopic handle, upper mould, install in telescopic handle lower extreme, the inner fixed surface connection of upper mould has baffle, the inner fixed surface connection of upper mould has heating plate, the upper surface fixed connection of upper mould has air compressor, the upper surface fixed connection of upper mould has vacuum pump, window, set up in upper mould side surface, the side surface rotationally connected of upper mould has the pivot, the side surface fixed connection of pivot has inner sealing door, the side surface fixed connection of pivot has outer sealing door, realize fixed, blister and quick demoulding through pneumatic system, and utilize the unique double sealing door to take into account air cooling and sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of packaging molds, and in particular to a blister packaging mold with a quick demolding structure. Background Technology

[0002] In today's highly affluent society, consumer goods such as food, medicine, and electronic products greatly enrich people's lives. Blister packaging, as a widely used packaging form across various fields, primarily involves heating and softening plastic sheets and then using vacuum adsorption or air pressure to press them onto the mold surface. After cooling and solidification, it forms a specific packaging shape. However, because the product shrinks and creates a vacuum adsorption force after cooling and solidification within the mold cavity, it adheres tightly to the cavity surface, making it difficult for operators to remove. Existing technologies mostly rely on mechanical ejection mechanisms such as ejector pins and ejector plates for demolding. However, these methods are not only structurally complex, increasing mold manufacturing costs and failure rates, but also prone to damaging the product during the ejection process. Damage to the product can affect the yield rate. Furthermore, the cooling systems of existing molds are inefficient, and common air-cooling systems cannot simultaneously ensure both airtightness and cooling capacity during the thermoforming process. Cooling efficiency not only affects production efficiency but also impacts demolding success rate by affecting the degree of product shrinkage. In common processing and production, the overly fragmented processes of heating, forming, and demolding also significantly reduce work efficiency and success rate. Therefore, there is an urgent need in this field for a thermoforming packaging mold that balances efficient cooling and airtightness, enables rapid demolding while effectively protecting the product, and features a compact and highly integrated structure with a rapid demolding mechanism. This would provide more efficient, stable, and versatile thermoforming packaging molds for related fields.

[0003] The core defects of existing technologies are: the purely mechanical ejection mechanism that existing technologies generally rely on requires overcoming huge resistance during use, which is not only inefficient but also easy to damage the product. In addition, the current devices have a low degree of integration, the related processes are too scattered, and the products rely on their own heat dissipation for cooling, making it difficult to balance airtightness and cooling effect, which greatly reduces production efficiency and yield. Utility Model Content

[0004] The purpose of this utility model is to provide a blister packaging mold with a quick demolding structure, which aims to solve the problems of overly dispersed processes, outdated cooling methods, and easy damage to the product during demolding in the above-mentioned technical problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A blister packaging mold with a quick demolding structure, comprising:

[0007] The conveying device is equipped with a conveyor belt;

[0008] A lower mold is installed on the upper surface of the conveying device, and a model is fixedly connected to the upper surface of the lower mold.

[0009] A support frame is installed on the upper surface of the conveying device, and a telescopic rod is fixedly connected to the side surface of the support frame.

[0010] An upper mold is installed at the lower end of a telescopic rod. A partition plate is fixedly connected to the inner surface of the upper mold, a heating plate is fixedly connected to the inner surface of the upper mold, an air compressor is fixedly connected to the upper surface of the upper mold, and a vacuum pump is fixedly connected to the upper surface of the upper mold.

[0011] A window is provided on the side surface of the upper mold. A rotating shaft is rotatably connected to the side surface of the upper mold. An inner sealing door is fixedly connected to the side surface of the rotating shaft, and an outer sealing door is fixedly connected to the side surface of the rotating shaft.

[0012] This utility model also has the following technical features:

[0013] In one embodiment of this utility model, a liquid inlet is provided on the side surface of the lower mold, and a cooling pipe is fixedly connected inside the lower mold.

[0014] In one embodiment of this utility model, a cylinder is fixedly connected to the upper surface of the bracket, and the output end of the cylinder passes through the bracket and is fixedly connected to the telescopic part of the telescopic rod.

[0015] In one embodiment of this utility model, the output end of the air compressor is fixedly connected to an air inlet pipe, which penetrates the upper surface of the upper mold to the interior.

[0016] In one embodiment of this utility model, the output end of the vacuum pump is fixedly connected to an outlet pipe, which penetrates the upper surface of the upper mold to the interior.

[0017] In one embodiment of this utility model, a filter screen is fixedly connected inside the window, and the filter screen is fixedly connected to the inner surface of the window.

[0018] In one embodiment of this utility model, a motor is fixedly connected to the side surface of the upper mold, and the output end of the motor is fixedly connected to the rotating part of the rotating shaft.

[0019] In one embodiment of this utility model, an outer box is fixedly connected to the side surface of the upper mold, and an exhaust fan is movably connected to the side surface of the outer box.

[0020] Compared with existing technologies, the beneficial effects of this utility model are as follows: This device integrates multiple processes into one unit through its integrated design, greatly increasing work efficiency and reducing production floor space costs. At the same time, the coordinated active cooling system of upper mold air cooling and lower mold liquid cooling greatly accelerates the product shaping process and effectively prevents product damage caused by insufficient cooling during demolding. Its double-door structure on the side surface effectively protects the airtightness of the device in the blowing and suction steps, creates air cooling windows, and restores the original air pressure environment inside the device to atmospheric pressure, effectively alleviating the vacuum adsorption between the product and the mold, making the pneumatic demolding of the product simpler. In addition, the blowing-type vacuum forming used in this device has stronger pressure than the traditional suction-type vacuum forming, which can stretch the material to deeper and finer corners, making the material distribution more uniform during product production and greatly improving the yield and stability. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is an overall structural diagram of a blister packaging mold with a quick demolding structure according to one embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the lower mold of a blister packaging mold with a quick demolding structure according to one embodiment of the present invention;

[0024] Figure 3 This is a planar view of the outer box of the upper mold of a blister packaging mold with a quick demolding structure according to one embodiment of the present invention;

[0025] Figure 4 This is a front planar view of the upper mold of a blister packaging mold with a quick demolding structure according to one embodiment of the present invention.

[0026] Figure 5 This is a cross-sectional view of the left side of the upper mold of a blister packaging mold with a quick demolding structure according to one embodiment of the present invention.

[0027] Legend:

[0028] 10. Conveying device;

[0029] 20. Lower mold; 21. Cooling pipe; 22. Model; 23. Liquid inlet;

[0030] 30. Bracket; 31. Telescopic rod; 32. Cylinder;

[0031] 40. Upper mold; 41. Partition plate; 42. Heating plate; 43. Air compressor; 44. Inlet pipe; 45. Vacuum pump; 46. Outlet pipe;

[0032] 50. Window; 51. Outer box; 52. Exhaust fan; 53. Motor; 54. Filter screen; 55. Shaft; 56. Inner sealing door; 57. Outer sealing door. Detailed Implementation

[0033] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0034] Reference Figure 1-5 The blister packaging mold with a quick demolding structure according to an embodiment of this utility model includes:

[0035] The conveying device 10 is equipped with a conveyor belt for limiting the device. It includes the conveyor belt, outer frame, placement limiter and related motor to provide power for it. It serves as the base and conveying unit of the entire system. There are relevant placement positions on it to ensure that the lower mold 20 and the upper mold 40 can fit effectively. It is responsible for accurately and cyclically transporting the lower mold 20 with different models 22 to the processing station below the upper mold 40.

[0036] The lower mold 20, mounted on the upper surface of the conveying device 10, serves as the forming master mold for the product. It integrates a cooling system to absorb heat from the product, enabling rapid shaping. Constructed of aluminum alloy, it combines good thermal conductivity, sufficient mechanical strength, lightweight design, and excellent machinability. It is quickly and accurately installed on the placement limiter of the conveying device 10 using locating pins and clips. The lower mold 20 has a hollow interior to accommodate the cooling pipe 21. It also features protrusions and sealing rings that engage with the protrusions of the upper mold 40 for sealing. A model 22 is fixedly connected to the upper surface of the lower mold 20; this model 22 serves as a template for the product and accommodates various components. The heated sheet material is made of the same material as the lower mold 20 and is fixed to the upper surface of the lower mold 20 by screws. Different molds 22 can be replaced according to different production needs. The side surface of the lower mold 20 is provided with a liquid inlet 23, which is connected to an external coolant circulation system through a quick-connect coupling to realize coolant circulation. A cooling pipe 21 is fixedly connected inside the lower mold 20. The cooling pipe 21 is made of a high thermal conductivity material and is fixedly connected to the inside of the lower mold 20 by welding to form a closed loop for cooling the internal gas, thereby reducing the temperature of the mold 22 and thus reducing the temperature of the molded product. The input and output ends of the cooling pipe 21 are connected to different liquid inlets 23.

[0037] The bracket 30 is installed on the upper surface of the conveying device 10. The bracket 30 is fixed to the frame of the conveying device (10) by anchor bolts and is used to install the telescopic device. The side surface of the bracket 30 is fixedly connected to the telescopic rod 31. The telescopic rod 31 is used to connect and drive the upper mold 40 to move in the vertical direction. By its own extension and retraction, it drives the upper mold 40 to achieve mold closing and mold opening. The upper surface of the action bracket 30 is fixedly connected to the cylinder 32. The cylinder 32 is vertically fixed to the upper surface of the bracket 30 by bolts and provides a power source for the extension and retraction of the telescopic rod 31. The cylinder 32 works through the output end to drive the telescopic rod 31 to extend and retract in the vertical direction. The output end of the cylinder 32 passes through the bracket 30 and is fixedly connected to the extension and retraction part of the telescopic rod 31.

[0038] The upper mold 40, installed at the lower end of the telescopic rod 31, is made of aluminum alloy, which effectively reduces the weight of the component. The upper mold 40 integrates multiple functions such as heating, forming, cooling, and part removal, and is the core functional unit of this system. Its lower surface has protrusions surrounded by sealing rings for engagement with the protrusions of the lower mold 20 to achieve a seal. The engagement method is that the protrusions of the lower mold 20 press against the non-protruding parts of the upper mold 40's frame, and vice versa. Both the upper mold 40 and the lower mold 20 are hollow cuboids with identical main body shapes. A partition 41, made of the same material as the upper mold 40, is fixedly connected to the inner surface of the upper mold 40, dividing the interior of the upper mold 40 into upper and lower air chambers. The edges of the partition 41 are sealed and welded to the outer shell of the upper mold 40. The partition 41 has small holes for heat conduction and airflow. A heating plate 42, made of stainless steel electric heating tube plate, is fixedly connected to the inner surface of the upper mold 40 and bolted to the upper part of the partition 41. To provide heat to the heated sheet, an air compressor 43 is fixedly connected to the upper surface of the upper mold 40. The air compressor 43 is fixedly installed on the upper surface of the upper mold 40 by a bracket and a shock-absorbing pad. It is used to inject compressed air into the upper mold 40 to press the heated sheet. An air inlet pipe 44 is fixedly connected to the output end of the air compressor 43. The air inlet pipe 44 is used to conduct gas to the upper half of the air chamber of the inner partition 41 of the upper mold 40. The air inlet pipe 44 passes through the upper surface of the upper mold 40 to the interior. A vacuum valve is fixedly connected to the upper surface of the upper mold 40. The air pump 45 is also fixedly installed on the upper surface of the upper mold 40 by a bracket and a shock-absorbing pad. It is used to draw out the gas inside the upper mold 40, so that the sheet can be adsorbed on the partition 41 during the preparation stage. At the same time, it provides an upward suction force for the sheet during the demolding stage, so that the sheet can be easily removed. The output end of the vacuum pump 45 is fixedly connected to the gas outlet pipe 46. The gas outlet pipe 46 is used to conduct gas to the upper half of the gas chamber of the partition 41 inside the upper mold 40. The gas outlet pipe 46 penetrates the upper surface of the upper mold 40 to the inside.

[0039] A window 50 is located on the side surface of the upper mold 40. Window 50 serves as an opening, directly machined into the side wall of the upper mold 40, facilitating gas exchange between the upper mold 40 chamber and the outside environment. It also functions as a cooling channel and a pressure balancing valve. A filter screen 54 is fixedly connected inside the window 50, embedded within it to prevent dust and other contaminants from entering the device. The filter screen 54 is fixedly connected to the inner surface of the window 50. A rotating shaft 55 is rotatably connected to the side surface of the upper mold 40, rotatably connected to the outer surface of the upper mold 40 via bearings. The rotating shaft 55 penetrates the outer surface of the upper mold 40 and, through its own rotation, drives the opening and closing of the inner sealing door 56 and the outer sealing door 57. A motor 53 is fixedly connected to the side surface of the upper mold 40. The motor 53 includes a bracket and a motor itself. Its mounting bracket is fixed to the outer surface of the upper mold 40 with screws. The motor 53 rotates through its output end, driving the rotating part of the rotating shaft 55 to rotate. The output end of the motor 53 is fixedly connected to... At the rotating part of the rotating shaft 55, an inner sealing door 56 is fixedly connected to the side surface of the rotating shaft 55, and an outer sealing door 57 is fixedly connected to the side surface of the rotating shaft 55. The inner sealing door 56 and the outer sealing door 57 are linked structures and are fixedly connected to the rotating shaft 55 in parallel. A sealing strip is embedded in the edge of the door frame. When the device is in the blowing state, the internal air pressure is relatively large, and the inner sealing door 56 will effectively prevent gas leakage. When the device is in the suction state, the internal air pressure is relatively small, and the outer sealing door 57 will effectively prevent gas leakage. An outer box 51 is fixedly connected to the side surface of the upper mold 40. The outer box 51 serves as a protective cover and air duct. It is fixed to the outside of the upper mold 40 by bolts and surrounds the window 50, the inner sealing door 56, and the outer sealing door 57. An exhaust fan 52 is movably connected to the side surface of the outer box 51. The exhaust fan 52 includes a bracket, a fan, and a built-in power unit. It is movably connected to the side wall of the outer box 51 by a mounting bracket and is responsible for blowing air into the room during the cooling stage to increase cooling efficiency.

[0040] In the above-mentioned device, the switches of the conveying device 10, cylinder 32, heating plate 42, air compressor 43, vacuum pump 45, exhaust fan 52, and motor 53 are all connected to the main control switch by wires to realize remote control.

[0041] The lower mold 20 and the upper mold 40 of this device are the same size, and the plate material should also be selected with the same size as the lower mold 20 and the upper mold 40 so that it can be placed in them.

[0042] Working principle: The sheet is placed on the lower surface of the partition 41. The vacuum pump 45 causes the sheet to be adsorbed onto the partition 41. At this time, the conveying device 10 and the telescopic rod 31 can be activated to make the upper mold 40 and the lower mold 20 fit together, so that the sheet is stuck into the mold 22. Then, the heating plate 42 in the upper mold 40 can be activated to transfer heat to the sheet below through the microporous partition 41. After the sheet is heated, the air compressor 43 can be activated to inject high-pressure compressed air into the air chamber above the partition 41, and the pressure is evenly distributed through the micropores on the partition 41. The softened sheet is blow-molded tightly into the cavity of the mold 22 in the lower mold 20. Then, the heating plate 42 is stopped, and coolant is continuously injected into the cooling pipe 21 through the liquid inlet 23. At the same time, the inner sealing door 56 and the outer sealing door 57 are opened, and the exhaust fan 52 blows in gas to effectively cool down and balance the internal and external pressure, breaking the vacuum suction force. After the product cools and sets, the inner sealing door 56 and the outer sealing door 57 can be closed, and the vacuum pump 45 is started to suck the product out of the mold 22. The above steps are repeated to carry out cyclic production.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A blister packaging mold with a quick demolding structure, characterized in that, include: The conveying device (10) is equipped with a conveyor belt; The lower mold (20) is installed on the upper surface of the conveying device (10), and a model (22) is fixedly connected to the upper surface of the lower mold (20); A bracket (30) is installed on the upper surface of the conveying device (10), and a telescopic rod (31) is fixedly connected to the side surface of the bracket (30); An upper mold (40) is installed at the lower end of a telescopic rod (31). A partition plate (41) is fixedly connected to the inner surface of the upper mold (40). A heating plate (42) is fixedly connected to the inner surface of the upper mold (40). An air compressor (43) is fixedly connected to the upper surface of the upper mold (40). A vacuum pump (45) is fixedly connected to the upper surface of the upper mold (40). A window (50) is provided on the side surface of the upper mold (40). A rotating shaft (55) is rotatably connected to the side surface of the upper mold (40). An inner sealing door (56) is fixedly connected to the side surface of the rotating shaft (55). An outer sealing door (57) is fixedly connected to the side surface of the rotating shaft (55).

2. The blister packaging mold with a quick demolding structure according to claim 1, characterized in that, The lower mold (20) has a liquid inlet (23) on its side surface, and a cooling pipe (21) is fixedly connected inside the lower mold (20).

3. The blister packaging mold with a quick demolding structure according to claim 1, characterized in that, A cylinder (32) is fixedly connected to the upper surface of the bracket (30), and the output end of the cylinder (32) passes through the bracket (30) and is fixedly connected to the telescopic part of the telescopic rod (31).

4. A blister packaging mold with a quick demolding structure according to claim 1, characterized in that, The air compressor (43) is fixedly connected to an air inlet pipe (44) at its output end, and the air inlet pipe (44) penetrates the upper surface of the upper mold (40) to the interior.

5. A blister packaging mold with a quick demolding structure according to claim 1, characterized in that, The vacuum pump (45) is fixedly connected to an outlet pipe (46) at its output end, and the outlet pipe (46) penetrates the upper surface of the upper mold (40) to the interior.

6. A blister packaging mold with a quick demolding structure according to claim 1, characterized in that, A filter screen (54) is fixedly connected inside the window (50), and the filter screen (54) is fixedly connected to the inner surface of the window (50).

7. A blister packaging mold with a quick demolding structure according to claim 1, characterized in that, A motor (53) is fixedly connected to the side surface of the upper mold (40), and the output end of the motor (53) is fixedly connected to the rotating part of the rotating shaft (55).

8. A blister packaging mold with a quick demolding structure according to claim 1, characterized in that, An outer box (51) is fixedly connected to the side surface of the upper mold (40), and an exhaust fan (52) is movably connected to the side surface of the outer box (51).

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