Environment-friendly PET packaging box processing press mold

Abstract

The utility model discloses an environmental protection PET packing box processing is pressed mould with, including mould cavity, upper die head and ejection assembly, the inside of mould cavity is provided with movable slot, the inner wall of mould cavity sets up the air hole of slanting upward blowing, upper die head is cooperated with mould cavity, the surface of upper die head is provided with nanometer ceramic coating, the ejection assembly includes the spacing jack that moves along movable slot, the neodymium iron boron permanent magnet of embedding spacing jack end and the electromagnet that is embedded in the inside of upper die head and with spacing jack position corresponds, the utility model discloses, when demoulding, electromagnet is electrified, and upper die head rises and adsorbs the spacing jack that has the neodymium iron boron permanent magnet and rises (spacing jack is limited by movable slot, and the highest rises 0.5mm) after separating from mould cavity, and the packing box is lifted to spacing jack, is in the state of micro -separation, and cooperates pneumatic blowing function, and the packing box is blown from mould cavity, makes the packing box completely suspended demoulding.

Description

Technical Field

[0001] This utility model relates to the field of packaging box mold technology, specifically a pressing mold for processing environmentally friendly PET packaging boxes. Background Technology

[0002] PET packaging boxes are generally made using compression molding. However, PET material is prone to sticking to the mold during the compression process. The traditional method is to manually spray release agent or let it cool naturally before demolding, which is inefficient and not environmentally friendly.

[0003] To this end, this application designs an environmentally friendly PET packaging box processing pressing mold. The mold's anti-sticking property is improved by a nano-coating, and the packaging box is demolded by magnetic ejection combined with pneumatic blowing, achieving rapid material unloading, reducing costs, and being more environmentally friendly. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the use of the above and / or environmentally friendly PET packaging box processing compression molds, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide an environmentally friendly PET packaging box processing pressing mold. The nano chromium nitride (CrN) coating on the inner wall of the mold cavity prevents the packaging boxes from sticking together, which is more environmentally friendly than spraying release agent each time. The upper mold head and the inside of the mold cavity adopt liquid cooling, which can quickly cool down the packaging box and improve demolding efficiency. During demolding, the electromagnet is energized, the upper mold head rises and attracts the limit rod with neodymium iron boron permanent magnet to rise (the limit rod is limited by the movable groove, and the maximum rise is 0.5mm), and then separates from the mold cavity. The packaging box is lifted by the limit rod and is in a slightly detached state. With the help of the pneumatic blowing action, the packaging box is blown out of the mold cavity, so that the packaging box is completely suspended and demolded.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A compression mold for processing environmentally friendly PET packaging boxes, comprising:

[0009] The mold cavity has a movable groove inside and an upward-sloping air hole on the inner wall of the mold cavity.

[0010] The upper mold head mates with the mold cavity, and the surface of the upper mold head is coated with a nano-ceramic coating.

[0011] The ejection assembly includes a limiting ejector rod that moves along the movable groove, a neodymium iron boron permanent magnet embedded in the end of the limiting ejector rod, and an electromagnet embedded inside the upper die head and corresponding to the position of the limiting ejector rod.

[0012] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes according to this utility model, the side wall of the mold cavity is provided with an air inlet, the air inlet is connected to a compressed air pump, and the air inlet is connected to an air hole.

[0013] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes according to the present invention, the side wall of the mold cavity is provided with a cold water inlet and a cold water outlet, and cold water copper pipes are arranged inside the mold cavity. The cold water inlet is connected to the inlet of the cold water copper pipe, and the cold water outlet is connected to the outlet of the cold water copper pipe.

[0014] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes described in this utility model, the inner wall of the mold cavity is provided with a nano chromium nitride (CrN) coating.

[0015] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes according to this utility model, the top of the upper mold head is provided with a cover plate, and the bottom of the cover plate is provided with a sealing strip.

[0016] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes described in this utility model, the upper mold head is provided with a microchannel copper tube network, and a -5℃ ethylene glycol solution is circulated inside the microchannel copper tube network.

[0017] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes according to this utility model, the top of the cover plate is provided with a lifting cylinder, the outer shell side wall of the lifting cylinder is provided with a fixed beam, the lifting cylinder is connected to an air supply device, and the telescopic end of the lifting cylinder is fixedly connected to the top of the cover plate.

[0018] As a preferred embodiment of the pressing mold for processing environmentally friendly PET packaging boxes according to the present invention, the top of the limiting top rod is provided with an L-shaped sealing plate. The L-shaped sealing plate opens the air hole as the top rod rises and seals the air hole as the top plate falls.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This kind of environmentally friendly PET packaging box processing pressing mold, through the nano chromium nitride (CrN) coating on the inner wall of the mold cavity, prevents the packaging boxes from sticking together, which is more environmentally friendly than spraying release agent each time. The upper mold head and the inside of the mold cavity adopt liquid cooling, which can quickly cool down the packaging box and improve demolding efficiency. During demolding, the electromagnet is energized, the upper mold head rises and attracts the limit rod with neodymium iron boron permanent magnet to rise (the limit rod is limited by the movable groove, and the maximum rise is 0.5mm), and then separates from the mold cavity. The packaging box is lifted by the limit rod and is in a slightly detached state. With the help of the pneumatic blowing, the packaging box is blown out of the mold cavity, so that the packaging box is completely suspended and demolded. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a schematic diagram of the overall structure of a pressing mold for processing environmentally friendly PET packaging boxes according to this utility model;

[0022] Figure 2 This is a cross-sectional structural diagram of a pressing mold for processing environmentally friendly PET packaging boxes according to this utility model;

[0023] Figure 3 This is a schematic diagram of the pressing state of a pressing mold for processing environmentally friendly PET packaging boxes according to this utility model.

[0024] 100. Mold cavity; 101. Air inlet; 102. Cold water inlet; 110. Air hole; 120. Cold water copper pipe; 200. Upper mold head; 210. Cover plate; 220. Lifting cylinder; 211. Sealing strip; 300. Ejection assembly; 310. Limiting ejector rod; 320. Neodymium iron boron permanent magnet; 330. Electromagnet. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure will not be enlarged to scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] This invention provides an environmentally friendly PET packaging box processing pressing mold. The nano-chromium nitride (CrN) coating on the inner wall of the mold cavity prevents the packaging boxes from sticking together, which is more environmentally friendly than spraying release agent each time. The upper mold head and the inside of the mold cavity adopt liquid cooling, which can quickly cool the packaging box and improve demolding efficiency. During demolding, the electromagnet is energized, the upper mold head rises and attracts the limit rod with neodymium iron boron permanent magnet to rise (the limit rod is limited by the movable groove, and the maximum rise is 0.5mm), and then separates from the mold cavity. The packaging box is lifted by the limit rod and is in a slightly detached state. With the help of the pneumatic blowing, the packaging box is blown out of the mold cavity, so that the packaging box is completely suspended and demolded.

[0029] Figures 1-3 The diagram shown is a structural schematic of one embodiment of a pressing mold for processing environmentally friendly PET packaging boxes according to this utility model. Please refer to [link / reference]. Figures 1-3 The present embodiment of an environmentally friendly PET packaging box processing pressing mold includes a main body comprising a mold cavity 100, an upper mold head 200, and an ejection assembly 300.

[0030] The mold cavity 100 facilitates the raising and lowering of the limiting ejector rod 310 via a movable groove. At its lowest point, the end of the limiting ejector rod 310 is flush with the bottom of the mold cavity 100. It features a nano-chromium nitride (CrN) coating, providing high strength and preventing packaging boxes from sticking together. This method is more environmentally friendly than applying a release agent each time. Air is injected into the air inlet 101 using a compressed air pump. During demolding, high-speed gas is ejected from the air hole 110, quickly detaching the packaging box from the mold cavity 100 and completing the unloading process. Specifically, the mold cavity 100 has a movable groove inside, and the inner wall of the mold cavity 100 has upward-sloping air holes 110. In this embodiment, the side wall of the mold cavity 100 has an air inlet 101, which is externally connected to... A compressed air pump is provided, with the air inlet 101 connected to the air hole 110. The side wall of the mold cavity 100 is provided with a cold water inlet 102 and a cold water outlet. Cold water copper pipes 120 are arranged inside the mold cavity 100. The cold water inlet 102 is connected to the inlet of the cold water copper pipe 120, and the cold water outlet is connected to the outlet of the cold water copper pipe 120. The inner wall of the mold cavity 100 is provided with a nano chromium nitride (CrN) coating. A lifting cylinder 220 is provided on the top of the cover plate 210. A fixing beam is provided on the side wall of the outer shell of the lifting cylinder 220. The lifting cylinder 220 is connected to an air supply device. The telescopic end of the lifting cylinder 220 is fixedly connected to the top of the cover plate 210.

[0031] The upper mold head 200 and the mold cavity 100 are cooled by liquid cooling, which can quickly cool the packaging box and improve demolding efficiency. Specifically, the upper mold head 200 cooperates with the mold cavity 100. The surface of the upper mold head 200 is provided with a nano-ceramic coating. In this embodiment, the top of the upper mold head 200 is provided with a cover plate 210, and the bottom of the cover plate 210 is provided with a sealing strip 211. The interior of the upper mold head 200 is provided with a microchannel copper tube network, and a -5℃ ethylene glycol solution is circulated inside the microchannel copper tube network.

[0032] When the ejector assembly 300 is demolded, the electromagnet 330 is energized, attracting the limiting ejector rod 310 with a neodymium iron boron permanent magnet, which rises 0.5mm and then stops, thus separating the packaging box from the mold cavity 100 and creating a gap. Combined with pneumatic blowing, this ensures a stable demolding action. Specifically, the ejector assembly 300 includes a limiting ejector rod 310 that moves along the movable groove, a neodymium iron boron permanent magnet 320 embedded at the end of the limiting ejector rod 310, and an electromagnet 330 embedded inside the upper mold head 200 and corresponding to the position of the limiting ejector rod 310.

[0033] Combination Figures 1-3 This embodiment of an environmentally friendly PET packaging box processing pressing mold is used as follows: the nano chromium nitride (CrN) coating on the inner wall of the mold cavity 100 prevents the packaging boxes from sticking together, which is more environmentally friendly than spraying a release agent each time. The upper mold head 200 and the inside of the mold cavity 100 adopt liquid cooling to quickly cool the packaging box and improve demolding efficiency. During demolding, the electromagnet 330 is energized, the upper mold head 200 rises and attracts the limiting ejector rod 310 with neodymium iron boron permanent magnet to rise (the limiting ejector rod 310 is limited by the movable groove, and the maximum rise is 0.5mm), and then separates from the mold cavity 100. The packaging box is lifted by the limiting ejector rod 310 and is in a slightly detached state. With the help of the pneumatic blowing action, the packaging box is blown out of the mold cavity 100, so that the packaging box is completely suspended and demolded.

[0034] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pressing mold for processing environmentally friendly PET packaging boxes, characterized in that, include: A mold cavity (100) is provided inside the mold cavity (100), and an air hole (110) for blowing air upwards is provided on the inner wall of the mold cavity (100). An upper mold head (200) is provided with a mold cavity (100) and the surface of the upper mold head (200) is provided with a nano-ceramic coating. Ejection assembly (300) includes a limiting ejector rod (310) that moves along the movable groove, a neodymium iron boron permanent magnet (320) embedded in the end of the limiting ejector rod (310), and an electromagnet (330) embedded in the upper die head (200) and corresponding to the position of the limiting ejector rod (310).

2. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 1, characterized in that, The side wall of the mold cavity (100) is provided with an air inlet (101), and a compressed air pump is connected to the air inlet (101). The air inlet (101) is connected to the air hole (110).

3. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 2, characterized in that, The side wall of the mold cavity (100) is provided with a cold water inlet (102) and a cold water outlet. Cold water copper pipes (120) are arranged inside the mold cavity (100). The cold water inlet (102) is connected to the inlet of the cold water copper pipe (120), and the cold water outlet is connected to the outlet of the cold water copper pipe (120).

4. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 3, characterized in that, The inner wall of the mold cavity (100) is coated with nano-chromium nitride (CrN).

5. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 4, characterized in that, The top of the upper mold head (200) is provided with a cover plate (210), and the bottom of the cover plate (210) is provided with a sealing strip (211).

6. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 5, characterized in that, The upper mold head (200) is provided with a microchannel copper network inside, and a -5℃ ethylene glycol solution is circulated inside the microchannel copper network.

7. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 6, characterized in that, A lifting cylinder (220) is provided on the top of the cover plate (210). A fixed beam is provided on the outer side wall of the lifting cylinder (220). The lifting cylinder (220) is connected to an air supply device. The telescopic end of the lifting cylinder (220) is fixedly connected to the top of the cover plate (210).

8. The pressing mold for processing environmentally friendly PET packaging boxes according to claim 7, characterized in that, The top of the limiting top rod (310) is provided with an L-shaped sealing plate. The L-shaped sealing plate opens the air hole (110) as the top rod rises, and seals the air hole (110) as the top plate falls.

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