WO2022095649A1

WO2022095649A1 - Injection molding mold for modified polylactic acid biodegradable plastic knife, fork and spoon

Info

Publication number: WO2022095649A1
Application number: PCT/CN2021/122185
Authority: WO
Inventors: 伍明电
Original assignee: 台州宽源家居有限公司
Priority date: 2020-11-03
Filing date: 2021-09-30
Publication date: 2022-05-12
Also published as: CN213618075U

Abstract

Disclosed in the present utility model is an injection molding mold for a modified polylactic acid biodegradable plastic knife, fork and spoon in the field of injection molding molds, comprising an apparatus body. The apparatus body comprises an upper box body and a lower box body that are fixedly connected; spoon-shaped holes are provided on the inner side of the lower box body; N-pole magnets are disposed on the left and right sides of the spoon-shaped holes; recesses are provided at four corners close to the tip end of the spoon-shaped holes; bottom holes are provided inside the recesses; a spring is fixed at the bottom of each of the recesses; a gasket is disposed on one side of each of the recesses; injection molding ports are provided on the outer side of one end of the upper box body; the spoon-shaped holes are provided inside the upper box body; the upper box body comprises soft rubber, fixed rods, and S-pole magnets; the number of groups of the soft rubber is configured to be greater than one, and each group of soft rubber is evenly distributed on the surface of the top of the upper box body; and the number of groups of the fixed rods is configured to be greater than one. During the use of the present utility model, a liquid leakage phenomenon caused by a gap generated between molds by combining them can be avoided, and both the spring and the soft rubber can cushion impact force, so that the damage to the structure is avoided, and the service time of the mold is prolonged.

Description

A modified polylactic acid biodegradable plastic knife, fork and spoon injection molding mold

technical field

The utility model relates to the field of injection molding molds, in particular to an injection molding mold for modified polylactic acid biodegradable plastic cutlery, fork and spoon.

Background technique

Polylactic acid, also known as polylactide, is a polyester polymer obtained by polymerizing lactic acid as the main raw material. It is a new type of biodegradable material. Plastics that degrade due to the action of fungi) and algae. The ideal biodegradable plastic is a polymer material with excellent performance, which can be completely decomposed by environmental microorganisms after being discarded, and finally be inorganicized to become an integral part of the carbon cycle in nature. "Paper" is a typical biodegradable material, while "synthetic plastic" is a typical polymer material. Therefore, biodegradable plastics are polymer materials that have the properties of both "paper" and "synthetic plastics".

The injection molding machine can heat the plastic and apply high pressure to the molten plastic, so that it is shot out and fills the mold cavity. , It is easy to have a certain clamping gap when the mold is closed. This gap will cause the injection molding machine to produce overflow phenomenon when injecting plastic, and cause material waste. At the same time, the hydraulic cylinder drives the upper mold to translate to realize the clamping operation. Hard impact will inevitably occur when the mold is closed. With the increase of use time, it will bring irreversible consequences to the upper and lower molds, and it is easy to cause the mold to fall off, resulting in the shutdown of the whole machine.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a modified polylactic acid biodegradable plastic knife, fork and spoon injection molding mold, to solve the problem that the mold proposed in the above-mentioned background technology is easy to have a certain mold clamping gap when it is closed due to its large weight. This gap will cause spillage when the injection molding machine injects plastic, and cause material waste and impact on the mold.

To achieve the above object, the utility model provides the following technical solutions:

A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold, comprising a device body, the device body includes an upper box body and a lower box body, the upper box body and the lower box body are fixedly connected, and the lower box body is The inner side of the body is provided with a spoon hole, the left and right sides of the spoon hole are provided with N-pole magnets, the top four corners of the spoon hole are provided with hole grooves, the inside of the hole groove is provided with a bottom hole, and the hole groove A spring is fixed at the bottom end of the upper box, a gasket is arranged on one side of the hole groove, an injection port is arranged outside one end of the upper box, a spoon hole is arranged inside the upper box, and the upper box is It includes soft glue, fixing rod and S-pole magnet. The soft glue is arranged in multiple groups, and the soft glue in each group is evenly distributed on the top surface of the upper box body. The fixing rod is arranged in multiple groups. The fixing rod is welded and fixed to the four corners of the bottom end of the upper box body, the fixing rod is provided with a rubber pad, the four corners of the rubber pad are provided with fixing holes, and the top surface of the upper box body is provided with a lifting device.

As a further solution of the present invention: the outer side of the bottom hole is provided with a side hole structure, and the side hole structure is provided with a support rod, the top of the support rod is welded with the outer side of the fixed rod, and the support rod is inserted In the side hole structure, it can play the role of positioning, and the falling of the support rod can be slowed down through the friction with the side hole structure, so as to avoid a large impact force.

As a further solution of the present utility model: the N-pole magnets and the S-pole magnets are both embedded on the sides of the lower case body and the upper case body, and the N-pole magnets and the S-pole magnets are matched in size, and the The N-pole magnet and the S-pole magnet are adsorbed to each other to reduce the gap between the upper box body and the lower box body to avoid leakage of injection liquid.

As a further solution of the present invention: the outer sides of the upper box body and the lower box body are provided with side pieces, the top end of the side pieces is arranged on one side of the upper box body, and the other end is arranged on one side of the lower box body. side, the side piece further strengthens the connection effect between the upper box body and the lower box body.

As a further solution of the present invention, each group of the gaskets is made of soft rubber material, which can buffer and damp the impact of the upper box body.

As a further solution of the present invention, grooves are provided in the middle of the four sides of the lower box body, and the grooves can facilitate the user to manually separate the upper box body and the lower box body.

Compared with the prior art, the beneficial effects of the present utility model are:

In the present invention, through the magnet structure and the spring structure provided, the user can clamp the fixing rod and the support rod in the upper box body with the bottom hole and the side hole structure, and the process of moving the upper box body downward In the middle, the spring at the bottom end will be compressed to buffer the impact force when pressing down, so as to avoid structural damage to the device body, and the S pole magnet and N pole magnet can be fixed by adsorption, which is convenient and fast to fix, and can drive the upper box. The body and the lower box body are adsorbed and fixed to each other to reduce the gap. When the utility model is in use, the leakage phenomenon caused by the gap between the molds can be avoided, and the spring and the soft glue can buffer the impact force and avoid the The structure causes damage and prolongs the life of the mold.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the middle and lower box bodies of the present utility model;

Fig. 3 is the structural representation of the upper box body in the utility model;

Fig. 4 is the structural representation of the gasket in the utility model;

5 is a schematic cross-sectional structure diagram of a bottom hole of the present invention.

In the figure: 1, the device body; 2, the upper box body; 21, the fixing rod; 22, the soft glue; 23, the S pole magnet; 24, the injection port; 3, the lower box body; 31, the groove; 32, the side piece ;33, strut; 34, gasket; 35, hole slot; 36, bottom hole; 361, spring; 37, spoon hole; 38, N pole magnet; 4, rubber pad; 41, fixing hole; 5, lifting device .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 5. In the embodiment of the present invention, a modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold includes a device body 1, and the device body 1 includes an upper box body 2 and a lower box body 3, The upper box body 2 and the lower box body 3 are fixedly connected, the inner side of the lower box body 3 is provided with a spoon hole 37, the left and right sides of the spoon hole 37 are provided with N-pole magnets 38, and the top four corners of the spoon hole 37 are provided with holes 35. , a bottom hole 36 is opened inside the hole groove 35, a spring 361 is fixed at the bottom end of the hole groove 35, a gasket 34 is provided on one side of the hole groove 35, an injection port 24 is provided on the outer side of one end of the upper box body 2, and the upper The inside of the box body 2 is provided with a spoon hole 37. The upper box body 2 includes soft glue 22, a fixing rod 21 and an S-pole magnet 23. There are multiple groups of soft glue 22, and each group of soft glue 22 is evenly distributed on the upper box body 2. On the top surface of the upper box body 2, there are multiple groups of fixing rods 21, each group of fixing rods 21 is welded and fixed to the four corners of the bottom end of the upper box body 2, the fixing rod 21 is provided with a rubber pad 4, and the four corners of the rubber pad 4 are provided with fixing holes 41 , the top surface of the upper box body 2 is provided with a lifting device 5 .

The outer side of the bottom hole 36 is provided with a side hole structure, and the side hole structure is provided with a support rod 33. The top end of the support rod 33 is welded to the outer side of the fixed rod 21, and the support rod 33 is inserted into the side hole structure. Play the role of positioning, and slow down the fall of the support rod 33 through friction with the side hole structure to avoid a large impact force; the N-pole magnet 38 and the S-pole magnet 23 are embedded in the lower box body 3 and the upper box body 2. and the size of the N-pole magnet 38 and the S-pole magnet 23 are matched, and the N-pole magnet 38 and the S-pole magnet 23 are attracted to each other to reduce the gap between the upper box body 2 and the lower box body 3 and avoid injection molding Liquid leakage; the outer sides of the upper box body 2 and the lower box body 3 are provided with a side piece 32, the top end of the side piece 32 is arranged on one side of the upper box body 2, and the other end is arranged on one side of the lower box body 3, the side piece 32 to further strengthen the connection effect between the upper box body 2 and the lower box body 3; each group of gaskets 34 is made of soft rubber, which can cushion the impact of the upper box body 2; the middle of the four sides of the lower box body 3 Both are provided with grooves 31, and the grooves 31 can facilitate the user to manually separate the upper box body 2 and the lower box body 3.

The working principle of the present invention is as follows: the user can clamp the fixing rod 21 and the support rod 33 in the upper box body 2 with the bottom hole 36 and the side hole structure, and during the downward movement of the upper box body 2, The spring 361 at the bottom end will be compressed to buffer the impact force when pressing down and avoid structural damage to the device body 1. The S pole magnet 23 and the N pole magnet 38 can be fixed by adsorption, which is convenient and fast to fix, and can drive The upper box body 2 and the lower box body 3 are adsorbed and fixed to each other to reduce the gap.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims

A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold, comprising a device body (1), wherein the device body (1) includes an upper box body (2) and a lower box body (3), the upper box body (1) The body (2) and the lower box body (3) are fixedly connected, and it is characterized in that: the inner side of the lower box body (3) is provided with a spoon hole (37), and the left and right sides of the spoon hole (37) are provided with N The pole magnet (38), the four corners of the top of the spoon hole (37) are provided with hole grooves (35), and the bottom hole (36) is opened inside the hole groove (35). A spring (361) is fixed at the bottom end, a gasket (34) is provided on one side of the hole groove (35), and an injection port (24) is provided on the outer side of one end of the upper box body (2). The inside of the box body (2) is provided with a spoon hole (37), and the upper box body (2) includes a soft glue (22), a fixing rod (21) and an S-pole magnet (23). ) is provided with multiple groups, the soft glue (22) of each group is evenly distributed on the top surface of the upper box body (2), the fixing rods (21) are provided with multiple groups, and the fixing rods (21) of each group are welded by welding It is fixed on the four corners of the bottom end of the upper box body (2). The top surface of the box body (2) is provided with a lifting device (5).
A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold according to claim 1, characterized in that: the outer side of the bottom hole (36) is provided with a side hole structure, and the side hole structure is provided with a side hole structure. A support rod (33), the top end of the support rod (33) is welded to the outer side of the fixed rod (21).
A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold according to claim 1, characterized in that: the N-pole magnet (38) and the S-pole magnet (23) are both embedded in the lower box body ( 3) and the side surface of the upper box body (2), and the size of the N-pole magnet (38) and the S-pole magnet (23) is matched.
A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold according to claim 1, characterized in that: the outer sides of the upper box body (2) and the lower box body (3) are provided with side pieces (32). ), the top end of the side piece (32) is arranged on one side of the upper box body (2), and the other end is arranged on one side of the lower box body (3).
A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold according to claim 1, characterized in that: each group of the gaskets (34) is made of soft rubber.
A modified polylactic acid biodegradable plastic cutlery and spoon injection molding mold according to claim 1, wherein grooves (31) are formed in the middle of the four sides of the lower box body (3).