CN211334368U

CN211334368U - Plastic mold with preheating function

Info

Publication number: CN211334368U
Application number: CN201922360253.0U
Authority: CN
Inventors: 王晓炜; 易淑宝
Original assignee: Shenzhen Field Precision Manufacturing Co ltd
Current assignee: Shenzhen Field Precision Manufacturing Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-25
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a plastic mold with preheating function, which comprises a bottom plate, a lower mold and an upper mold, wherein a fixed plate is fixed above the bottom plate through a pillar, the fixed plate is fixed at the bottom of the lower mold through a first bolt, two groups of first hot oil ducts and two groups of first hot oil ducts are symmetrically embedded in the lower mold, two groups of second hot oil ducts and two groups of first hot oil ducts are symmetrically embedded in the upper mold, the inlet end of the first hot oil duct is connected with the outlet end of an oil inlet pipe, the outlet end of the second hot oil duct is communicated with the oil inlet pipe through a circulating oil pipe, and a heating water pipe is wound on the circulating oil pipe, so that the utility model can better heat thermoplastic plastics, ensure the flowability of the thermoplastic plastics, has good preheating effect, and simultaneously can ensure the heat exchange between the heating water pipe and the circulating oil pipe through winding the heating water pipe on the circulating, the heat conducting oil cooled in the circulating oil pipe is heated and recycled, so that the preheating efficiency is improved.

Description

Plastic mold with preheating function

Technical Field

The utility model relates to a plastic mold technical field specifically is a plastic mold with preheat function.

Background

When thermosetting plastics, such as solid silicone rubber, are used, plastic materials are required to be placed in a cavity of a mold, the plastic materials are heated to melt the plastic materials, and the molten materials in the cavity are cooled to be solidified and molded to form a plastic product. The plastic can be softened and flowed by heating, heated to a certain temperature, and subjected to chemical reaction-crosslinking solidification to be hardened, and plastic molding processing is carried out by virtue of the characteristic, and a cavity is filled under pressure by utilizing the plasticizing flow during heating, so that a product with a determined shape and size is solidified. Due to the special properties of plastics, the moulds are required to have a certain preheating temperature when the moulds are used for moulding the plastics.

At present, a plastic forming mold used generally is a process due to injection molding, in a production process, the thermoplastic temperature in a cavity is reduced twice along with the injection molding process, the thermoplastic temperature in a lower mold is reduced fastest, the curing degree is deepest, an existing plastic mold preheating mechanism cannot be used for preheating specifically, heat is excessive or too little, the preheating effect is poor, meanwhile, hot oil of the existing preheating mechanism is led in from one end and led out from the other end, the hot oil cannot be transmitted circularly, and the preheating efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastic mold with preheat function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a plastic mold with a preheating function comprises a bottom plate, a lower mold and an upper mold, wherein a fixing plate is fixed above the bottom plate through a support column, the fixing plate is fixed at the bottom of the lower mold through a first bolt, two groups of first hot oil delivery pipes and two groups of first hot oil delivery pipes are symmetrically embedded in the lower mold, two groups of second hot oil delivery pipes and two groups of first hot oil delivery pipes are symmetrically embedded in the upper mold, the inlet end of each first hot oil delivery pipe is connected with the outlet end of an oil inlet pipe, the outlet end of each first hot oil delivery pipe is connected with the inlet end of the corresponding first hot oil delivery pipe through a first U-shaped pipe, the outlet end of each first hot oil delivery pipe is connected with the inlet end of the corresponding second hot oil delivery pipe through a second U-shaped pipe, the outlet end of each second hot oil delivery pipe is connected with the inlet end of the corresponding second hot oil delivery pipe through, and a heating water pipe is wound on the circulating oil pipe.

Preferably, the supporting columns are provided with four groups, and the four groups of supporting columns are respectively arranged at four corners of the lower surface of the fixing plate.

Preferably, both sides of the top of the lower die and both sides of the bottom of the upper die are correspondingly provided with lug plates, two groups of threaded holes are formed in the lug plates, and second bolts are connected with the threaded holes in an internal thread mode.

Preferably, guide sleeves are embedded in four corners of the lower die and the upper die, guide pillars are inserted in the guide sleeves of the lower die, and the upper die is connected to the guide pillars in a sliding mode through the guide sleeves.

Preferably, a valve is installed on the circulating oil pipe, and the valve is a flow valve.

Preferably, the first U-shaped pipe and the circulating oil pipe are connected with the side wall of the lower die through a first clamping sleeve, and the third U-shaped pipe is connected with the side wall of the upper die through a second clamping sleeve.

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

1. two groups of first hot oil guide pipes and two groups of first hot oil conveying pipes are symmetrically embedded in the lower die, two groups of second hot oil conveying pipes and two groups of first hot oil guide pipes are symmetrically embedded in the upper die, the inlet end of the first hot oil guide pipe is connected with the outlet end of the oil inlet pipe, the outlet end of the first hot oil guide pipe is connected with the inlet end of the first hot oil conveying pipe through a first U-shaped pipe, the outlet end of the first hot oil conveying pipe is connected with the inlet end of the second hot oil conveying pipe through a second U-shaped pipe, the outlet end of the second hot oil conveying pipe is connected with the inlet end of the second hot oil guide pipe through a third U-shaped pipe, hot oil is introduced from the bottom of one side of the lower die, is gradually conveyed into the upper die and is guided out from the top of one side of the upper die, the temperature of the hot oil from bottom to top in the conveying process is, the temperature is complementary, when the thermoplastic flows into the cavity of the lower die, the thermoplastic temperature is the lowest point, and the introduced hot oil enables the temperature near the bottom of the lower die cavity to be the highest temperature of the whole die, so that the thermoplastic can be better heated, the thermoplastic fluidity is ensured, and the preheating effect is good.

2. The outlet end of the second hot oil guide pipe is communicated with the oil inlet pipe through the circulating oil pipe, the circulating oil pipe is wound with the heating water pipe, heat exchange is carried out between the heating water pipe and the circulating oil pipe, heat conducting oil cooled in the circulating oil pipe is heated, recycling is achieved, and preheating efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partial side view of the present invention;

fig. 3 is a partial plan view of the lower mold of the present invention.

In the figure: 1. a base plate; 2. a lower die; 3. an upper die; 4. a pillar; 5. a fixing plate; 6. a first bolt; 7. an ear plate; 8. a threaded hole; 9. a second bolt; 10. a first hot oil conduit; 11. a first hot oil delivery pipe; 12. a second hot oil delivery pipe; 13. a second hot oil conduit; 14. an oil inlet pipe; 15. a first U-shaped tube; 16. a second U-shaped tube; 17. a third U-shaped tube; 18. a circulating oil pipe; 19. heating the water pipe; 20. a guide sleeve; 21. a guide post; 22. a valve; 23. a first ferrule; 24. and a second ferrule.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a plastic die with a preheating function comprises a bottom plate 1, a lower die 2 and an upper die 3, wherein a fixing plate 5 is fixed above the bottom plate 1 through pillars 4, four groups of pillars 4 are arranged on the four corners of the lower surface of the fixing plate 5, the fixing plate 5 is fixed at the bottom of the lower die 2 through first bolts 6, guide sleeves 20 are embedded in the four corners of the lower die 2 and the upper die 3, guide pillars 21 are inserted in the guide sleeves 20 of the lower die 2, the upper die 3 is connected to the guide pillars 21 in a sliding mode through the guide sleeves 20, lug plates 7 are correspondingly arranged on two sides of the top of the lower die 2 and two sides of the bottom of the upper die 3, two groups of threaded holes 8 are formed in the lug plates 7, second bolts 9 are connected to the threaded holes 8 in a threaded mode, and after the;

two groups of first hot oil delivery pipes 10 and two groups of first hot oil delivery pipes 11 are symmetrically embedded in the lower die 2, and two groups of second hot oil delivery pipes 12 and two groups of second hot oil delivery pipes 13 are symmetrically embedded in the upper die 3;

the inlet end of the first hot oil duct 10 is connected with the outlet end of the oil inlet pipe 14, the outlet end of the first hot oil duct 10 is connected with the inlet end of the first hot oil conveying pipe 11 through a first U-shaped pipe 15, the outlet end of the first hot oil conveying pipe 11 is connected with the inlet end of the second hot oil conveying pipe 12 through a second U-shaped pipe 16, and the outlet end of the second hot oil conveying pipe 12 is connected with the inlet end of the second hot oil duct 13 through a third U-shaped pipe 17;

the outlet end of the second hot oil guide pipe 13 is communicated with the oil inlet pipe 14 through a circulating oil pipe 18, a heating water pipe 19 is wound on the circulating oil pipe 18, a valve 22 is installed on the circulating oil pipe 18, the valve 22 is a flow valve, in order to enhance the stability of the first U-shaped pipe 15, the third U-shaped pipe 17 and the circulating oil pipe 18 during oil guiding, the first U-shaped pipe 15 and the circulating oil pipe 18 are both connected with the side wall of the lower die 2 through a first clamping sleeve 23, and the third U-shaped pipe 17 is connected with the side wall of the upper die 3 through a second clamping sleeve 24.

The working principle is as follows: two groups of first hot oil guide pipes 10 and two groups of first hot oil conveying pipes 11 are symmetrically embedded in the lower die 2, two groups of second hot oil conveying pipes 12 and two groups of second hot oil guide pipes 13 are symmetrically embedded in the upper die 3, the inlet end of the first hot oil guide pipe 10 is connected with the outlet end of an oil inlet pipe 14, the outlet end of the first hot oil guide pipe 10 is connected with the inlet end of the first hot oil conveying pipe 11 through a first U-shaped pipe 15, the outlet end of the first hot oil conveying pipe 11 is connected with the inlet end of the second hot oil conveying pipe 12 through a second U-shaped pipe 16, the outlet end of the second hot oil conveying pipe 12 is connected with the inlet end of the second hot oil guide pipe 13 through a third U-shaped pipe 17, hot oil is introduced from the bottom of one side of the lower die 2 and is gradually conveyed into the upper die 3 and is guided out from the top of one side of the upper die 3, the lower die 2 and the upper, the temperature of the thermoplastic injected from the top of the upper die 3 is from high to low in the flowing process, the temperature can be complemented with each other just, the thermoplastic temperature is the lowest point when the thermoplastic flows into the cavity of the lower die 2, the temperature near the bottom of the cavity of the lower die 2 is the highest temperature of the whole die by the introduced hot oil, the thermoplastic can be heated, and the fluidity of the thermoplastic is ensured.

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. The utility model provides a plastic mold with preheat function, includes bottom plate (1), lower mould (2) and goes up mould (3), its characterized in that: the improved structure of the oil-gas separator is characterized in that a fixing plate (5) is fixed above the bottom plate (1) through a support column (4), the fixing plate (5) is fixed at the bottom of a lower die (2) through a first bolt (6), two groups of first hot oil delivery pipes (10) and two groups of first hot oil delivery pipes (11) are symmetrically embedded in the lower die (2), two groups of second hot oil delivery pipes (12) and two groups of second hot oil delivery pipes (13) are symmetrically embedded in the upper die (3), the inlet ends of the first hot oil delivery pipes (10) are connected with the outlet ends of oil inlet pipes (14), the outlet ends of the first hot oil delivery pipes (10) are connected with the inlet ends of the first hot oil delivery pipes (11) through a first U-shaped pipe (15), the outlet ends of the first hot oil delivery pipes (11) are connected with the inlet ends of the second hot oil delivery pipes (12) through a second U-shaped pipe (16), and the outlet ends of the second hot oil delivery pipes (12) are connected with the, the outlet end of the second hot oil guide pipe (13) is communicated with the oil inlet pipe (14) through a circulating oil pipe (18), and a heating water pipe (19) is wound on the circulating oil pipe (18).

2. The plastic mold with preheating function as claimed in claim 1, wherein: the four groups of the supporting columns (4) are arranged, and the four groups of the supporting columns (4) are respectively arranged at four corners of the lower surface of the fixing plate (5).

3. The plastic mold with preheating function as claimed in claim 1, wherein: lower mould (2) top both sides and last mould (3) bottom both sides all correspond and are provided with otic placode (7), set up two sets of screw hole (8) on otic placode (7), screw hole (8) female connection has second bolt (9).

4. The plastic mold with preheating function as claimed in claim 1, wherein: guide sleeves (20) are embedded in four corners of the lower die (2) and the upper die (3), guide columns (21) are inserted in the guide sleeves (20) of the lower die (2), and the upper die (3) is connected to the guide columns (21) in a sliding mode through the guide sleeves (20).

5. The plastic mold with preheating function as claimed in claim 1, wherein: and a valve (22) is installed on the circulating oil pipe (18), and the valve (22) is a flow valve.

6. The plastic mold with preheating function as claimed in claim 1, wherein: the first U-shaped pipe (15) and the circulating oil pipe (18) are connected with the side wall of the lower die (2) through a first clamping sleeve (23), and the third U-shaped pipe (17) is connected with the side wall of the upper die (3) through a second clamping sleeve (24).