A plastic mold cooling structure

Abstract

The utility model discloses a plastic mold cooling structure, including a die seat and a punch seat, the top of the die seat is provided with an upper sealing plate, the bottom of the punch seat is provided with a lower sealing plate, the inside of the die seat and the punch seat are provided with cooling cavities all around, the two ends of the cooling cavity are provided with cooling pipes, and the two sides of the cooling cavity are provided with U-shaped cooling pipes. In the utility model, the original two conveying paths are changed into one, when the die seat and the punch seat are merged, the plug is connected with the plug port through the plug rod, and the ball plug is pushed up, so that the through port and the inside of the cooling pipe are interconnected, so that the cold air is sequentially conveyed to the punch seat, and the cold air enters from the die seat and circulates sequentially to the punch seat and is discharged, so that the cold air is conveyed by a single path. Compared with the traditional method, this cooling method can save at least one times of pipelines, and the pipeline connection is clearer, which is convenient for maintenance and saves cost expenditure.

Description

Technical Field

[0001] The utility model relates to the field of plastic molds, in particular to a plastic mold cooling structure. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. The coordinated changes of the mold convex, concave mold and auxiliary molding system can process a series of plastic parts of different shapes and sizes. Plastic mold is the mother of industry. The release of new products will involve plastics. It mainly includes a concave mold with a variable cavity composed of a concave mold combination base plate, a concave mold assembly and a concave mold combination pallet, and a convex mold with a variable core composed of a convex mold combination base plate, a convex mold assembly, a convex mold combination pallet, a cavity truncation assembly and a side truncation combination plate.

[0003] There are still certain deficiencies in the use of plastic mold cooling structures in the prior art. The traditional cooling structure is usually divided into two paths, which are installed inside the die seat and the punch seat respectively. It is necessary to connect a large number of cooling pipes. The pipe connections are complicated, inconvenient for maintenance, and will also increase cost expenditures, and the cooling effect is not good. Utility Model Content

[0004] The purpose of the utility model is to provide a plastic mold cooling structure to solve the problem that the traditional cooling structure proposed in the above background technology is usually divided into two paths, which are respectively installed inside the concave mold base and the punch mold base, and need to connect more cooling pipes. The pipe connection is complicated, which is not convenient for maintenance, and will also increase cost expenditure, and the cooling effect is not good.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic mold cooling structure, comprising a die seat and a punch seat, the top of the die seat is provided with an upper sealing plate, the bottom of the punch seat is provided with a lower sealing plate, the inside of the die seat and the punch seat are provided with cooling cavities all around, cooling pipes are provided at both ends of the inside of the cooling cavity, U-shaped cooling pipes are provided on both sides of the inside of the cooling cavity, an automatic closer is provided inside the cooling pipe, a plug-in port is provided at the bottom end of the automatic closer, a ball plug is provided above the inside of the plug-in port, a plug-in rod is provided at a position where the top surface of the punch seat is aligned with the plug-in port, upper positioning support rods are provided at both ends of both sides of the die seat, lower positioning support rods are provided at both ends of both sides of the punch seat, a first cold air interface and a second cold air interface are provided on the surface of the upper sealing plate in sequence, and the cooling pipe is fixedly connected to the first cold air interface through a connecting pipe, and a first hot air outlet and a second hot air outlet are provided in sequence on the bottom surface of the lower sealing plate.

[0006] In a further embodiment, the cooling tubes are arranged in two rows, and each row is provided with four cooling tubes.

[0007] In a further embodiment, the number of the U-shaped cooling pipes is four, and one end of the U-shaped cooling pipe is connected to the cooling pipe by welding.

[0008] In a further embodiment, the upper sealing plate is fixedly connected to the die seat by bolts, the lower sealing plate is fixedly connected to the punch seat by bolts, and the upper sealing plate and the lower sealing plate are of the same size.

[0009] In a further embodiment, the upper end of the upper positioning support rod is hingedly connected to the die seat via a first fixed hinge, and the lower end of the upper positioning support rod is hingedly connected to the lower positioning support rod via a second fixed hinge.

[0010] In a further embodiment, the lower end of the lower positioning support rod is hingedly connected to the punch seat via a third fixed hinge, and the upper positioning support rod is connected to the lower positioning support rod in a V-shaped structure;

[0011] In a further embodiment, the surface of the insertion rod is provided with three through openings, and the diameter of the ball plug is the same as the diameter of the insertion rod;

[0012] In a further embodiment, the automatic closer is fixedly connected to the cooling tube by means of fixing screws, and the height of the automatic closer is three quarters of the height of the cooling tube.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the original two conveying paths are changed into one. When the die seat and the punch seat are merged, the plug is connected to the plug port through the plug rod, and the ball plug is pushed upward, so that the through port and the inside of the cooling pipe are interconnected, so that the cold air is sequentially conveyed to the punch seat, and the cold air enters from the die seat and circulates in the punch seat in turn to be discharged, so that the cold air can be conveyed through a single path. Compared with the traditional method, this cooling method can save at least one time of pipelines, the pipeline connection is clearer, it is convenient for maintenance, and cost expenditure is saved.

[0015] 2. The utility model assembles a U-shaped cooling pipe and a cooling pipe in a cooling cavity. The cooling area can be expanded and the cooling effect can be improved by cooling pipes of different shapes. The cooling cavity is arranged around the mold base, which can cool the surrounding area of ​​the mold base and ensure the uniformity of cooling of the plastic workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a plastic mold cooling structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the opening structure of the concave mold seat and the punch mold seat of the utility model;

[0018] Figure 3A bottom view of the die base of the utility model;

[0019] Figure 4 A top view of the cooling chamber of the utility model;

[0020] Figure 5 It is a schematic diagram of the connection structure between the insertion rod and the cooling pipe of the utility model;

[0021] Figure 6 It is a schematic diagram of the cooling pipe and the separation structure of the cooling pipe of the utility model;

[0022] Figure 7 It is a side view of the U-shaped cooling tube of the utility model;

[0023] Figure 8 It is a structural schematic diagram of the lower sealing plate of the utility model.

[0024] In the figure: 1. upper sealing plate; 2. first fixed hinge; 3. die seat; 4. upper positioning support rod; 5. second fixed hinge; 6. lower positioning support rod; 7. punch seat; 8. third fixed hinge; 9. lower sealing plate; 10. insertion rod; 11. first cold air interface; 12. second cold air interface; 13. first hot air outlet; 14. second hot air outlet; 15. through port; 16. insertion port; 17. cooling chamber; 18. cooling pipe; 19. connecting pipe; 20. U-shaped cooling pipe; 21. ball plug; 22. fixing screw; 23. automatic closer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-8The utility model provides an embodiment: a plastic mold cooling structure, including a die seat 3 and a punch seat 7, the top of the die seat 3 is provided with an upper sealing plate 1, the bottom of the punch seat 7 is provided with a lower sealing plate 9, the inside of the die seat 3 and the punch seat 7 are provided with cooling cavities 17, the two ends of the inside of the cooling cavity 17 are provided with cooling pipes 18, the two sides of the inside of the cooling cavity 17 are provided with U-shaped cooling pipes 20, the inside of the cooling pipe 18 is provided with an automatic closer 23, the bottom end of the automatic closer 23 is provided with a plug-in port 16, the plug-in port 16 is provided with a plug-in port 16, and the plug-in port 16 is provided with a plug-in port 16. A ball plug 21 is provided above the inside of the opening 16, an insertion rod 10 is provided at a position where the top surface of the punch seat 7 is aligned with the insertion opening 16, upper positioning support rods 4 are provided at both ends of both sides of the die seat 3, and lower positioning support rods 6 are provided at both ends of both sides of the punch seat 7. The surface of the upper sealing plate 1 is provided with a first cold air interface 11 and a second cold air interface 12 in sequence, and the cooling pipe 18 is fixedly connected to the first cold air interface 11 by a connecting pipe 19, and the bottom surface of the lower sealing plate 9 is provided with a first hot air outlet 13 and a second hot air outlet 14 in sequence.

[0027] The upper sealing plate 1 is used to seal and fix the die seat 3, the cooling chamber 17 is used to install the cooling pipe 18 and the U-shaped cooling pipe 20, the cooling pipe 18 and the U-shaped cooling pipe 20 are used to route the direction of cold air delivery to improve the cooling effect, the automatic closer 23 is used to automatically open and close the cooling pipe 18, the ball plug 21 is used to close the insertion port 16, and the upper positioning support rod 4 and the lower positioning support rod 6 are combined to guide and position the open or closed position of the die seat 3 and the punch seat 7, so that the insertion rod 10 can be accurately inserted into the insertion port 16.

[0028] Furthermore, the number of cooling tubes 18 is two rows, and each row is provided with four cooling tubes 18 .

[0029] The two rows of cooling pipes 18 can increase the cooling position and improve the cooling effect.

[0030] Furthermore, there are four U-shaped cooling pipes 20 in total, and one end of the U-shaped cooling pipe 20 is connected to the cooling pipe 18 by welding.

[0031] By welding, the U-shaped cooling pipe 20 and the cooling pipe 18 can be installed more firmly and have better sealing performance.

[0032] Furthermore, the upper sealing plate 1 is fixedly connected to the die seat 3 by bolts, the lower sealing plate 9 is fixedly connected to the punch seat 7 by bolts, and the upper sealing plate 1 and the lower sealing plate 9 are of the same size.

[0033] The upper sealing plate 1 and the lower sealing plate 9 can be easily installed or removed by bolts.

[0034] Furthermore, the upper end of the upper positioning support rod 4 is hingedly connected to the die seat 3 via a first fixed hinge 2 , and the lower end of the upper positioning support rod 4 is hingedly connected to the lower positioning support rod 6 via a second fixed hinge 5 .

[0035] The upper positioning support rod 4, the die holder 3 and the lower positioning support rod 6 can be coordinated with each other through the first fixed hinge 2 and the second fixed hinge 5.

[0036] Furthermore, the lower end of the lower positioning support rod 6 is hingedly connected to the punch seat 7 via a third fixed hinge 8, and the upper positioning support rod 4 and the lower positioning support rod 6 are connected to form a V-shaped structure.

[0037] The lower positioning support rod 6 and the punch seat 7 can be coordinated with each other through the third fixed hinge 8 .

[0038] Furthermore, three through openings 15 are provided on the surface of the insertion rod 10 , and the diameter of the ball plug 21 is the same as the diameter of the insertion rod 10 .

[0039] The through opening 15 is used to convey the cold air into the insertion rod 10 and then into the punch seat 7 .

[0040] Furthermore, the automatic closer 23 is fixedly connected to the cooling pipe 18 via a fixing screw 22 , and the height of the automatic closer 23 is three quarters of the height of the cooling pipe 18 .

[0041] The fixing screws 22 are used to mount the automatic closer 23 to the cooling pipe 18 .

[0042] Working principle: When in use, when the die seat 3 and the punch seat 7 are combined, the insertion rod 10 is connected to the insertion port 16, and the ball plug 21 is lifted up to open, so that the cooling cavity 17 in the die seat 3 is connected with the cooling cavity 17 in the punch seat 7, and the plastic raw material is injected into the die seat 3. After the plastic workpiece is formed, the cold air is respectively transported to the cooling pipe 18 and the U-shaped cooling pipe 20 through the first cold air interface 11 and the second cold air interface 12, so that the plastic workpiece in the die seat 3 is cooled and formed, and the cold air then enters the punch seat 7 from the through port 15 in turn for cooling, and the hot air is discharged through the first hot air outlet 13 and the second hot air outlet 14, and then the die seat 3 and the punch seat 7 are opened to take out the plastic workpiece.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A plastic mold cooling structure, comprising a die seat (3) and a punch seat (7), characterized in that: An upper sealing plate (1) is provided at the top of the die seat (3), a lower sealing plate (9) is provided at the bottom of the punch seat (7), cooling cavities (17) are provided around the inside of the die seat (3) and the punch seat (7), cooling pipes (18) are provided at both ends of the inside of the cooling cavity (17), U-shaped cooling pipes (20) are provided on both sides of the inside of the cooling cavity (17), an automatic closer (23) is provided inside the cooling pipe (18), a plug-in port (16) is provided at the bottom end of the automatic closer (23), and a ball plug (21) is provided above the inside of the plug-in port (16) A fixing rod (10) is provided at a position where the top surface of the punch seat (7) is aligned with the fixing opening (16), upper positioning support rods (4) are provided at both ends of both sides of the die seat (3), lower positioning support rods (6) are provided at both ends of both sides of the punch seat (7), a first cold air interface (11) and a second cold air interface (12) are provided on the surface of the upper sealing plate (1), and a cooling pipe (18) is fixedly connected to the first cold air interface (11) through a connecting pipe (19), and a first hot air outlet (13) and a second hot air outlet (14) are provided on the bottom surface of the lower sealing plate (9).

2. A plastic mold cooling structure according to claim 1, characterized in that: The cooling tubes (18) are arranged in two rows, and each row is provided with four cooling tubes (18).

3. A plastic mold cooling structure according to claim 1, characterized in that: There are four U-shaped cooling pipes (20) in total, and one end of the U-shaped cooling pipe (20) is connected to the cooling pipe (18) by welding.

4. A plastic mold cooling structure according to claim 1, characterized in that: The upper sealing plate (1) is fixedly connected to the die seat (3) by bolts, and the lower sealing plate (9) is fixedly connected to the die seat (7) by bolts, and the upper sealing plate (1) and the lower sealing plate (9) are of the same size.

5. The plastic mold cooling structure according to claim 1, characterized in that: The upper end of the upper positioning support rod (4) is hingedly connected to the die seat (3) via a first fixed hinge (2), and the lower end of the upper positioning support rod (4) is hingedly connected to the lower positioning support rod (6) via a second fixed hinge (5).

6. A plastic mold cooling structure according to claim 1, characterized in that: The lower end of the lower positioning support rod (6) is hingedly connected to the punch seat (7) via a third fixed hinge (8), and the upper positioning support rod (4) is connected to the lower positioning support rod (6) in a V-shaped structure.

7. A plastic mold cooling structure according to claim 1, characterized in that: The surface of the insertion rod (10) is provided with three through openings (15), and the diameter of the ball plug (21) is the same as the diameter of the insertion rod (10).

8. The plastic mold cooling structure according to claim 1, characterized in that: The automatic closer (23) is fixedly connected to the cooling pipe (18) via a fixing screw (22), and the height of the automatic closer (23) is three quarters of the height of the cooling pipe (18).

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