Internal circulation cooling structure of mold of bottle cap injection molding machine

Abstract

The utility model provides an internal circulation cooling structure of a mould of a bottle cap injection molding machine, which relates to the technical field of plastic processing and comprises two base plates which are symmetrically distributed, a plurality of soaking strips are connected in series between the base plates, and radiating pipes are arranged in the soaking strips in a penetrating manner; a U-shaped circulating pipe is arranged in the base plate piece, and a connector plug is arranged between the circulating pipe and each soaking strip in a penetrating mode. An embedded plate is fixedly arranged at one end of the base plate piece, and a connector pipe is arranged at the end, opposite to the base plate piece, of the embedded plate in a penetrating mode and communicates with the circulating pipe; the die cavity structure has the beneficial effects that the embedded structure is assembled and matched with the die cavity structure of the die, the surfaces of the soaking strips are cooled through the cooling liquid flow channel formed by the circulating pipe and the soaking strips during cooling, and the die cavity structure is cooled by arranging the soaking strips on the side, the upper end surface and the lower end surface of the die cavity, so that the service life of the die cavity is prolonged, and the service life of the die is prolonged. Therefore, heat dissipation and cooling of different die cavity structures can be adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, and particularly relates to an internal circulation cooling structure in a bottle cap injection molding machine mold. Background Art

[0002] An injection molding machine, also known as an injection molding machine or an injection machine, is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies;

[0003] The work of an injection molding machine mainly involves injecting the plastic in a molten state (i.e., viscous flow state) that has been plasticized well into a closed mold cavity by the thrust of a screw (or plunger). After curing and shaping, the process of obtaining the product is carried out. Before and after the mold is closed, there is usually a certain amount of residual heat accumulated in the mold cavity during successive injection moldings. At the same time, before the plastic is separated from the mold cavity and demolded, the residual heat generates an adhesive force and mold cavity pressure to a certain extent, which is not conducive to the efficient demolding of plastic products. There is a lack of a cooling structure inside the mold to cooperate with the cooling system to complete the cooling of the mold cavity in the front and back sequences. Summary of the Utility Model

[0004] In view of the above technical problems existing in the prior art, an internal circulation cooling structure in a bottle cap injection molding machine mold is provided.

[0005] The purpose and efficacy of the utility model are achieved by the following specific technical means:

[0006] An internal circulation cooling structure in a bottle cap injection molding machine mold includes a substrate member. There are two substrate members in total and they are symmetrically distributed. A plurality of heat equalizing bars are connected in series between the substrate members, and a heat dissipation tube is penetrated through the heat equalizing bars;

[0007] A U-shaped circulation tube is arranged in the substrate member, and an interface plug is penetrated between the circulation tube and each heat equalizing bar;

[0008] One end of the substrate member is fixedly provided with an embedded plate, and an interface tube is penetrated through one end of the embedded plate relative to the substrate member. The interface tube is communicated with the circulation tube.

[0009] Further, edge steps for clamping are extended outwards on both sides of the substrate member.

[0010] Further, the substrate member is a heat-insulating base plate with a hollow interior.

[0011] Further, a plurality of temperature equalizing hole plugs are embedded between the heat dissipation tube and the upper surface of the heat equalizing bar. The temperature equalizing hole plugs are one-way sealed plug structures.

[0012] Further, a fitting piece is filled between adjacent temperature equalizing hole plugs of the heat dissipation tube. The fitting piece is made of a heat-conducting material and is attached and fixed by a heat-conducting adhesive.

[0013] Further, at least five soaking bars are provided.

[0014] Further, a punching plug is provided through the interface pipe and the circulation pipe, and the punching plug is a one-way opening and closing pipeline.

[0015] Further, a shunt valve port pipe is provided through between the punching plug and both ends of the circulation pipe nozzle.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] The internal circulation cooling structure of the cap injection molding machine mold adopts an embedded structure to be assembled and matched with the mold cavity structure. During cooling, the surface of the soaking bar is radiated and cooled through the coolant flow path composed of the circulation pipe and the soaking bar, and the mold cavity structure is cooled by arranging the soaking bars on the side, upper and lower end faces of the mold cavity, so as to adapt to the heat dissipation and cooling of different mold cavity structures, and at the same time ensure the cooling effect of the cooling structure. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the internal planar structural schematic diagram of the substrate part of the present utility model;

[0020] Figure 3 is the internal planar structural schematic diagram of the soaking bar of the present utility model.

[0021] Markings in the figure: 1 - substrate part; 2 - soaking bar; 3 - embedded plate; 4 - interface pipe; 5 - shunt valve port pipe; 6 - circulation pipe; 7 - interface plug; 8 - punching plug; 9 - heat dissipation pipe; 10 - soaking temperature hole plug; 11 - fitting piece. Detailed Embodiment

[0022] Please refer to Figures 1-3 , and further describe the embodiments of the present utility model;

[0023] An internal circulation cooling structure of a cap injection molding machine mold includes a substrate part 1. There are two substrate parts 1 in total and they are symmetrically distributed. Multiple soaking bars 2 are connected in series between the substrate parts 1, and a heat dissipation pipe 9 is provided through the soaking bars 2;

[0024] A U-shaped circulation pipe 6 is provided in the substrate part 1, and an interface plug 7 is provided through between the circulation pipe 6 and each soaking bar 2;

[0025] An embedded plate 3 is fixedly provided at one end of the substrate part 1, an interface pipe 4 penetrates through one end of the embedded plate 3 relative to the substrate part 1, and the interface pipe 4 is communicated with the circulation pipe 6.

[0026] In this structure, the substrate member 1 is mainly disposed at both ends of the molding side of the mold cavity in a fitting and fixing manner, and the outwardly extending panel 3 is used as an outward extension structure. The interface pipe 4 is used to connect the coolant source pipeline. Combining the position of the cavity structure in the closed mold state, the heat sink bar 2 is bridged between the two substrate members 1 on both sides, so that the surface of the heat sink bar 2 is attached to the outside of the cavity structure;

[0027] In the structure, the coolant source introduced mainly by the interface pipe 4 enables the coolant to circulate through the circulation pipe 6 and flow into the heat dissipation pipe 9 in the heat sink bar 2 along the interface plug 7. Until it flows to the circulation pipe 6 in the other substrate member 1 and then is discharged along the interface pipe 4 on the other side, forming a single - path coolant circulation, so as to cool the mold cavity by contact - type heat dissipation, improving the practicability of this structure.

[0028] Preferably, on both sides of the substrate member 1, there are outwardly extending edge step surfaces for clamping. The remaining edge step surfaces can use their extended step surfaces to longitudinally clamp and fix with the mold structure when fitting and fixing the substrate member 1, so as to improve the structural reliability of this structure during installation.

[0029] Preferably, the substrate member 1 is an internally hollow heat - insulating base plate. Considering the influence of heat during the circulation of the coolant pipeline in the heat dissipation pipe 9, the heat - insulating substrate member 1 is used to prevent heat from affecting the mold structure in the structure except for the heat dissipation pipe 9.

[0030] Preferably, a plurality of temperature - equalizing hole plugs 10 are embedded between the heat dissipation pipe 9 and the upper surface of the heat sink bar 2. The temperature - equalizing hole plug 10 is a one - way sealed plug structure. The one - way sealed heat - equalizing hole plug 10 structure can further affect the cavity structure of the contact surface of the heat sink bar 2 by the point - wise distribution of the heat of the heat dissipation pipe 9, so as to improve the cooling effect of this structure on the local position of the mold cavity.

[0031] Preferably, a fitting piece 11 is filled between adjacent temperature - equalizing hole plugs 10 of the heat dissipation pipe 9. The fitting piece 11 is made of a heat - conductive material and is attached and fixed through heat - conductive glue, further improving the heat - conduction efficiency between the heat dissipation pipe 9 and the surface of the heat sink bar 2 through the fitting piece 11.

[0032] Preferably, at least five heat sink bars 2 are provided. As Figure 1 shown, using one - side substrate member 1 as the starting end of the circulation pipe 6 to the heat dissipation pipe 9, after 5 times of winding and circulating, it enters the circulation pipe 6 in the other substrate member 1 and is finally discharged by the interface pipe 4, so as to achieve uniform temperature cooling by making the most of the coolant in the single - path with the best effect.

[0033] Preferably, a punching plug 8 is provided through the interface pipe 4 and the circulation pipe 6. The punching plug 8 is a single-way opening and closing pipeline. When one end of the punching plug 8 is opened through a single-way passage, the other end passage is closed to ensure that the shunt coolant entering from the interface pipe 4 flows along the unilateral circulation pipe 6 to the other side circulation pipe 6, avoiding the collision of the shunt coolants.

[0034] Preferably, a shunt valve port pipe 5 is provided through both ends of the pipe orifices of the punching plug 8 and the circulation pipe 6. Further, the shunt valve port pipe 5 is used to shunt the coolant flowing from the punching plug 8 into the circulation pipe 6, and the on-off opening and closing of the valve port is used to facilitate the cut-off control of the coolant.

[0035] The implementation manner of this device is as follows:

[0036] This structure arranges the substrate member 1 at both ends of the forming side of the mold cavity in a fitting and fixing manner, and according to the position of the cavity structure in the mold closing state, bridges the heat equalizing bar 2 between the two substrate members 1 so that the surface of the heat equalizing bar 2 is attached to the outside of the cavity structure;

[0037] After connecting one side interface pipe 4 to the coolant source pipeline, the coolant successively passes through the punching plug 8 and the shunt valve port pipe 5 and flows into the unilateral circulation pipe 6, and flows into the heat dissipation pipe 9 through the interface plug 7. As the coolant flows in the heat dissipation pipe 9, physical heat exchange is carried out by using the contact between the surface of the heat equalizing bar 2 and the mold cavity, and the heat is taken away by the flow of the coolant to realize the cooling of the cavity. After the coolant circulates multiple times in the heat equalizing bar 2, it will flow into the other side circulation pipe 6 and finally be discharged along the other side interface pipe 4.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An internal circulation cooling structure for a bottle cap injection molding machine die, characterized in that: It includes substrate parts (1), and there are two substrate parts (1) in total and they are symmetrically distributed. A plurality of heat pipes (2) are connected in series between the substrate parts (1), and a heat dissipation pipe (9) is penetrated through the heat pipes (2). A U-shaped circulation pipe (6) is arranged in the substrate part (1), and an interface plug (7) is penetrated and arranged between the circulation pipe (6) and each heat pipe (2). One end of the substrate part (1) is fixedly provided with an embedded panel (3), and an interface pipe (4) is penetrated through one end of the embedded panel (3) relative to the substrate part (1), and the interface pipe (4) is communicated with the circulation pipe (6).

2. The inner circulation cooling structure of a bottle cap injection molding machine die according to claim 1, characterized in that: Edge step surfaces for clamping are extended outward on both sides of the substrate part (1).

3. The internal circulation cooling structure of a bottle cap injection molding machine die according to claim 1, characterized in that: The substrate part (1) is a heat-insulating base plate with a hollow interior.

4. The inner circulation cooling structure of a bottle cap injection molding machine mold according to claim 1, characterized in that: A plurality of temperature equalizing hole plugs (10) are embedded between the heat dissipation pipe (9) and the upper surface of the heat pipe (2), and the temperature equalizing hole plugs (10) are one-way sealed plug structures.

5. The inner circulation cooling structure of a bottle cap injection molding machine die according to claim 4, characterized in that: A fitting piece (11) is filled and arranged between adjacent temperature equalizing hole plugs (10) of the heat dissipation pipe (9), and the fitting piece (11) is made of a heat-conducting material and is attached and fixed through heat-conducting glue.

6. The inner circulation cooling structure of a bottle cap injection molding machine mold according to claim 1, characterized in that: At least five heat pipes (2) are provided.

7. The inner circulation cooling structure of a bottle cap injection molding machine mold according to claim 1, characterized in that: A punching plug (8) is penetrated and arranged between the interface pipe (4) and the circulation pipe (6), and the punching plug (8) is a one-way opening and closing pipeline.

8. A mold internal circulation cooling structure for a bottle cap injection molding machine according to claim 7, characterized in that: A shunt valve port pipe (5) is penetrated and arranged between the punching plug (8) and both ends of the pipe orifice of the circulation pipe (6).

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