CN213919180U

CN213919180U - Plastic box thermoforming mould

Info

Publication number: CN213919180U
Application number: CN202022344802.8U
Authority: CN
Inventors: 梁德金
Original assignee: Xiamen Lixin Plastic Packaging Co Ltd
Current assignee: Xiamen Lixin Plastic Packaging Co Ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-08-10
Anticipated expiration: 2030-10-21

Abstract

The utility model discloses a plastic box thermal forming die, which belongs to the technical field of plastic product dies and comprises an upper die holder, a lower die holder and a base, wherein the upper end of the upper die holder is provided with a water inlet pipe and a water outlet pipe, the middle part of the upper die holder is provided with a feed inlet, the lower end of the upper die holder is provided with a die core, the inner surface of the die core is provided with a cooling pipe in a surrounding way, the lower die holder is arranged at the upper end of the base in a sliding way and consists of a first die holder and a second die holder, the upper ends of the first die holder and the second die holder form a die cavity, a pair of elastic components for separating the first die holder and the second die holder are arranged between the bottom ends of the first die holder and the second die holder, one side of the upper ends of the first die holder and the second die holder, which are far away from each other is symmetrically provided with a guide surface, the two sides of the upper die holder are respectively extended downwards to form a limit part, the inner side of the limit part is provided with a limit surface matched with the guide surface, when the limit surface is attached to the guide surface and moves downwards, the first die holder and the second die holder move towards the directions close to each other, the utility model has the advantages of manpower saving, rapid cooling and convenient demoulding.

Description

Plastic box thermoforming mould

Technical Field

The utility model relates to a plastic products mould technical field specifically is a plastic case thermoforming mould.

Background

The plastic box is a non-toxic and harmless container made of edible PP materials, can be placed in a microwave oven for direct heating, is easy to clean, has a smooth surface, and is widely used in daily life due to the advantages of good heat resistance and corrosion resistance, steam sterilization and the like.

At present, when a plastic box is manufactured, plastic raw material particles are heated and melted, then added into a mold, and demoulded after the plastic raw material particles are cooled and formed. However, the plastic box still needs to be taken out manually, so that the workload of workers is greatly increased, and the efficiency is not high; in addition, the plastic box still needs to be waited for to be completely cooled and formed during manual demoulding, and if the cooling time is not controlled completely, the product appearance of the material box is easily abraded, defective products are caused, and the quality of the products is affected.

Based on this, the utility model designs a plastic box thermoforming mould to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastic box thermoforming mould to solve above-mentioned technical problem.

In order to achieve the above object, the utility model provides a following technical scheme:

a plastic box thermoforming mould comprises an upper mould base, a lower mould base and a base, wherein a water inlet pipe and a water outlet pipe are symmetrically arranged at the upper end of the upper mould base, a feed inlet is arranged at the middle part of the upper mould base, a mould core is arranged at the lower end of the upper mould base, a cooling pipe connected with the water inlet pipe and the water outlet pipe is arranged on the inner surface of the mould core in a surrounding manner, the lower mould base is arranged at the upper end of the base in a sliding manner and consists of a first mould base and a second mould base, a mould cavity matched with the mould core is formed at the upper ends of the first mould base and the second mould base, a pair of elastic components used for separating the first mould base and the second mould base is arranged between the bottom ends of the first mould base and the second mould base, guide surfaces are symmetrically arranged at the upper ends of the first mould base and the second mould base and are positioned at one sides far away from each other, limiting parts extend downwards from the two sides of the upper mould base respectively, limiting surfaces are matched with the inner sides of the limiting parts, when the limiting surfaces are attached to the guide surfaces and move downwards, the first die holder and the second die holder move towards the direction of mutual approaching.

Preferably, the guide surface is obliquely arranged, the higher end of the guide surface faces the direction close to the die cavity, and the limiting surface is arranged in parallel with the guide surface.

Preferably, a plurality of mounting grooves are symmetrically formed between the first die holder and the second die holder, the elastic assembly comprises return springs arranged in the mounting grooves on two sides and limiting rods penetrating between the two return springs, a pair of air springs are symmetrically arranged between the first die holder and the second die holder, two ends of each air spring are respectively connected with the first die holder and the second die holder, and the air springs are parallel to the limiting rods.

Preferably, the upper end of the base is provided with a sliding groove in the sliding direction of the first die holder and the second die holder, the bottom ends of the first die holder and the second die holder are respectively provided with a sliding rail which is matched with the sliding groove in a sliding manner, and when the upper die holder is separated from the lower die holder, the first die holder and the second die holder slide to two ends of the sliding groove under the action of the elastic assembly.

Preferably, the upper end of the base is provided with a fixing groove at the center of the lower die holder and between the two elastic assemblies, the fixing groove is internally provided with a material ejecting cylinder, and an output shaft of the material ejecting cylinder faces the lower die holder and the tail end of the material ejecting cylinder is fixed with a material ejecting part.

Preferably, one side of the ejection part facing the lower die base is in arc transition and is covered with a buffer layer.

Preferably, a proximity switch and an induction part matched with the proximity switch are respectively arranged on one side, close to each other, of the first die holder and the second die holder.

Preferably, the mold core is hemispherical, and the cooling pipes are spirally distributed on the inner wall of the mold core.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses simple structure, the drawing of patterns is convenient, utilizes the cooling tube to carry out abundant cooling to the mould benevolence, makes the plastic case product between mould benevolence and the die cavity cool off rapidly, makes things convenient for the drawing of patterns, and elastic component makes the die holder separate, and automatic drawing of patterns is realized to cooperation liftout cylinder, when reducing workman's work load, promotes the quality of product, reduces the defective rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic cross-sectional view of the present embodiment;

FIG. 3 is a schematic cross-sectional view of the elastic assembly of the present embodiment;

fig. 4 is a schematic cross-sectional view illustrating the first mold holder and the second mold holder separated from each other in the present embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an upper die holder; 11. a water inlet pipe; 12. a water outlet pipe; 13. a feed inlet; 14. a cooling tube; 15. a limiting part; 151. a limiting surface; 2. a lower die holder; 21. a first die holder; 22. a second die holder; 23. a mold cavity; 24. a guide surface; 25. mounting grooves; 26. a slide rail; 27. an induction tank; 3. a base; 31. a chute; 32. fixing grooves; 4. a mold core; 5. an elastic component; 51. a return spring; 52. a limiting rod; 6. a gas spring; 7. a material ejection cylinder; 71. a material ejecting part; 8. a proximity switch; 81. a sensing part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a plastic box thermoforming mould comprises an upper mould base 1, a lower mould base 2 and a base 3, wherein the upper end of the upper mould base 1 is symmetrically provided with a water inlet pipe 11 and a water outlet pipe 12, the middle part of the upper mould base 1 is provided with a feed inlet 13, the lower end of the upper mould base 1 is fixed with a hemispherical mould core 4, the inner surface of the mould core 4 is hollow, a cooling pipe 14 with two ends respectively connected with the water inlet pipe 11 and the water outlet pipe 12 is arranged around the inner surface of the mould core 4, the cooling pipe 14 is spirally distributed on the inner wall of the mould core 4, the lower mould base 2 is glidingly arranged at the upper end of the base 3 and consists of a first mould base 21 and a second mould base 22, a mould cavity 23 matched with the mould core 4 and with a shape is formed at the upper ends of the first mould base 21 and the second mould base 22, a pair of elastic components 5 used for separating the first mould base 21 and the second mould base 22 is arranged between the bottom ends of the first mould base 21 and the second mould base 22, and a guide surface 24 is symmetrically arranged at one side far away from each other, the two sides of the upper die holder 1 respectively extend downwards to form a limiting part 15, a limiting surface 151 matched with the guide surface 24 is formed on the inner side of the limiting part 15, when the limiting surface 151 is attached to the guide surface 24 and moves downwards, the first die holder 21 and the second die holder 22 move towards the direction close to each other, and when the die core 4 is embedded in the die cavity 23, the first die holder 21 is closely attached to the second die holder 22.

Preferably, the guide surface 24 is obliquely distributed, the higher end of the guide surface faces the direction close to the die cavity 23, and the limiting surface 151 and the guide surface 24 are distributed in parallel, so that when the upper die holder 1 moves downwards, the first die holder 21 and the second die holder 22 move towards the direction close to each other under the action of the limiting surface 151 until the first die holder 21 and the second die holder 22 are tightly attached to each other, thereby facilitating the subsequent molding process.

Preferably, a plurality of mounting grooves 25 are symmetrically formed between the first die holder 21 and the second die holder 22, the mounting grooves 25 face the same sliding direction as the first die set and the second die holder 22, the elastic component 5 comprises return springs 51 arranged in the mounting grooves 25 at two sides and a stop rod 52 penetrating between the two return springs 51, a pair of gas springs 6 is symmetrically arranged between the first die holder 21 and the second die holder 22, two ends of each gas spring 6 are respectively connected with the first die holder 21 and the second die holder 22, and each gas spring 6 is parallel to the stop rod 52, in this embodiment, a single elastic component 5 and a single gas spring 6 form a group and are arranged at one side of the connecting position of the first die holder 21 and the second die holder 22, and another group of elastic component 5 and gas spring 6 is correspondingly arranged at the other side of the connecting position, so that uniform elastic support can be formed for the first die holder 21 and the second die holder 22 to enable the first die holder 21 and the second die holder 22 to stably slide, the mold cavity 23 is convenient to open for demolding the cooled and molded plastic box product.

Preferably, the sliding grooves 31 are formed in the upper end of the base 3 in the sliding direction of the first die holder 21 and the second die holder 22, the sliding rails 26 slidably engaged with the sliding grooves 31 are respectively arranged at the bottom ends of the first die holder 21 and the second die holder 22, and when the upper die holder 1 is separated from the lower die holder 2, the first die holder 21 and the second die holder 22 slide to the two ends of the sliding grooves 31 under the action of the elastic assembly 5 (see fig. 4), so that the sliding of the first die holder 21 and the second die holder 22 is guided by the sliding grooves 31 and the sliding rails 26, and the sliding process is always kept in a stable state.

Preferably, the fixed slot 32 has been seted up in the lower bolster 2 central point of base 3 upper end and between being located two elastic component 5, be equipped with liftout cylinder 7 in the fixed slot 32, the output shaft of liftout cylinder 7 is towards lower bolster 2 and its end is fixed with liftout portion 71, liftout portion 71 is that the arc is excessive and cover and be equipped with one deck buffer layer (not shown in the figure) towards one side of lower bolster 2, in this embodiment, the buffer layer can adopt comparatively soft materials such as rubber, further reduce the probability that the plastic box product damaged, therefore, cooperation through liftout cylinder 7 and liftout portion 71, when making die cavity 23 open, liftout portion 71 stretches out through the clearance between die cavity 23, push away the plastic box product from die cavity 23, conveniently carry out the drawing of patterns, the damage that probably causes when having avoided manual demoulding, promote the product yield.

Preferably, a proximity switch 8 and an induction part 81 matched with the proximity switch 8 are respectively arranged on the side where the first die holder 21 and the second die holder 22 are close to each other, in this embodiment, the proximity switch 8 is arranged on the second die holder 22, an induction groove 27 for the proximity switch 8 to penetrate is formed in the corresponding position of the first die holder 21, and the induction part 81 is arranged in the induction groove 27, when the first die holder 21 and the second die holder 22 are tightly attached, the proximity switch 8 contacts with the induction part 81, and the proximity switch 8 sends a signal to inject the plastic raw material through the feed opening 13, so that the situation that the raw material leaks due to the fact that the first die holder 21 and the second die holder 22 are not completely closed and then are molded is prevented from occurring.

One specific application of this embodiment is:

firstly, the upper die holder 1 moves downwards, so that the limiting surface 151 on the limiting part 15 contacts with the guide surfaces 24 on the two sides of the first die holder 21 and the second die holder 22, the first die holder 21 and the second die holder 22 move towards the direction of approaching each other along with the continuous downward movement of the upper die holder 1, when the first die holder 21 and the second die holder 22 are completely and tightly attached, the proximity switch 8 contacts with the induction part 81, a signal is sent out, so that the feed port 13 can inject plastic raw materials between the die cavity 23 and the die core 4, after the injection is finished, the water inlet pipe 11 injects cold water into the cooling pipe 14, so that the inner wall of the die core 4 is sufficiently cooled, after the plastic box product is completely cooled, the upper die holder 1 moves upwards, the first die holder 21 and the second die holder 22 which lose the limiting function under the elastic component 5 and the gas spring 6 move towards the direction of separating from each other, so that the die cavity 23 is opened, and finally, the ejecting part 71 of the ejecting cylinder 7 ejects the completely cooled plastic box product, and finishing the demolding process.

To sum up, the utility model discloses simple structure, the drawing of patterns is convenient, utilizes cooling tube 14 to carry out abundant cooling to mould benevolence 4, makes the plastic box product between mould benevolence 4 and the die cavity 23 cool off rapidly, and elastic component 5 makes die holder 2 separate, and cooperation liftout cylinder 7 realizes automatic drawing of patterns, when reducing workman's work load, promotes the quality of product, reduces the defective rate.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A plastic box thermoforming mould is characterized in that: the die comprises an upper die holder (1), a lower die holder (2) and a base (3), wherein a water inlet pipe (11) and a water outlet pipe (12) are symmetrically arranged at the upper end of the upper die holder (1), a feed inlet (13) is formed in the middle of the upper die holder, a die core (4) is arranged at the lower end of the upper die holder (1), a cooling pipe (14) respectively connected with the water inlet pipe (11) and the water outlet pipe (12) is arranged on the inner surface of the die core (4) in a surrounding manner, the lower die holder (2) is arranged at the upper end of the base (3) in a sliding manner and consists of a first die holder (21) and a second die holder (22), a die cavity (23) matched with the die core (4) is formed at the upper ends of the first die holder (21) and the second die holder (22), a pair of elastic assemblies (5) used for separating the first die holder (21) and the second die holder (22) is arranged between the bottom ends of the first die holder (21) and the second die holder (22), guide surfaces (24) are symmetrically arranged at one side, which is far away from each other, spacing portion (15) of upper die base (1) both sides downwardly extending respectively, spacing portion (15) inboard form with guide face (24) complex spacing face (151), work as spacing face (151) and guide face (24) laminating and during the downstream, first die holder (21) and second die holder (22) move towards the direction that is close to each other.

2. A plastic case thermoforming mold as recited in claim 1, wherein: the guide surface (24) is obliquely arranged, the higher end of the guide surface faces to the direction close to the die cavity (23), and the limiting surface (151) is arranged in parallel with the guide surface (24).

3. A plastic case thermoforming mold as recited in claim 1, wherein: a plurality of mounting grooves (25) have been seted up to the symmetry between first die holder (21) and second die holder (22), elastic component (5) are including locating reset spring (51) in both sides mounting groove (25) and wearing to locate gag lever post (52) between two reset spring (51), the symmetry is equipped with a pair of air spring (6) between first die holder (21) and second die holder (22), and first die holder (21) and second die holder (22) are connected respectively to the both ends of air spring (6), air spring (6) and gag lever post (52) keep parallel.

4. A plastic case thermoforming mold as recited in claim 1, wherein: the die comprises a base (3), wherein a sliding groove (31) is formed in the upper end of the base (3) in the sliding direction of a first die holder (21) and a second die holder (22), sliding rails (26) matched with the sliding groove (31) in a sliding mode are arranged at the bottom ends of the first die holder (21) and the second die holder (22), and when the upper die holder (1) is separated from the lower die holder (2), the first die holder (21) and the second die holder (22) slide to the two ends of the sliding groove (31) under the action of an elastic assembly (5).

5. A plastic case thermoforming mold as recited in claim 1, wherein: the improved die holder is characterized in that a fixing groove (32) is formed in the center of the lower die holder (2) and located between the two elastic assemblies (5) at the upper end of the base (3), an ejection cylinder (7) is arranged in the fixing groove (32), and an ejection part (71) is fixed to the output shaft of the ejection cylinder (7) towards the lower die holder (2) and the tail end of the ejection cylinder.

6. A thermoforming mould for plastics boxes as claimed in claim 5, characterised in that: one side of the material ejecting part (71) facing the lower die holder (2) is in arc transition and is covered with a buffer layer.

7. A plastic case thermoforming mold as recited in claim 1, wherein: and a proximity switch (8) and an induction part (81) matched with the proximity switch (8) are respectively arranged on the sides, close to each other, of the first die holder (21) and the second die holder (22).

8. A plastic case thermoforming mold as recited in claim 1, wherein: the mold core (4) is hemispherical, and the cooling pipes (14) are spirally distributed on the inner wall of the mold core (4).