Mold structure for injection molding of bottle cap

Abstract

The utility model provides a mold structure for injection molding of a bottle cap, which relates to the technical field of plastic processing and comprises a mold seat block and a mold cavity block, the mold seat block and the mold cavity block are symmetrically arranged at two ends, and connecting plates are fixed on two sides between the mold seat block and the mold cavity block. A plurality of mold cavity grooves are formed in one end, opposite to the mold base block, of the mold cavity block; a pump pipe plate is embedded in the end, opposite to the mold cavity block, of the mold base block, a plurality of branch pipe heads are connected to the pump pipe plate in an inserted mode, and the branch pipe heads extend towards the inner end of the mold base block to form inner through pipes. The utility model has the beneficial effects that according to the distribution mode of the bottle cap mold cavity groove in the fixed mold structure of the injection molding machine, the annular circulating pipe is used for completing the intermittent rapid cooling of the mold cavity groove, and the circulating pipe is shunted with each inner through pipe and the diverter valve port disc through the external branch pipe head, so that the mold cavity can be rapidly cooled along the pipeline of the circulating pipe; and the cooling efficiency of the structure is improved while the cooling effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, in particular to a mold structure for injection molding of bottle caps. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment for thermoplastic plastics or thermosetting plastics using plastic molding molds to make plastic products of various shapes;

[0003] Mold injection molding is a processing method used in mass production of bottle caps. The specific principle is that the heated and melted plastic raw materials are pushed by the injection molding machine screw and injected into the mold cavity of the plastic mold under high pressure. After cooling and solidification, plastic-molded bottle caps are obtained. The mold consists of a movable mold and a fixed mold. The movable mold is installed on the movable template of the injection molding machine, and the fixed mold is installed on the fixed template of the injection molding machine. During injection molding, the movable mold and the fixed mold are closed to form a pouring system and a mold cavity. When the mold is opened, the movable mold and the fixed mold are separated to remove the plastic product. Since the overall molding depth of the bottle cap is relatively short, the bottle cap can be demoulded after only a short demolding process after the mold is closed and opened. At the same time, during the mold closing gap, it is necessary to wait for the mold cavity to cool before subsequent injection molding. There is a lack of a structure for rapid cooling of the mold cavity to achieve fast processing of bottle cap injection molding. Utility Model Content

[0004] In view of the above technical problems existing in the prior art, a mold structure for injection molding of bottle caps is provided.

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

[0006] A mold structure for injection molding of bottle caps, comprising a mold base block and a mold cavity block, wherein the mold base block and the mold cavity block are symmetrically arranged at both ends, connecting plates are fixed on both sides between the mold base block and the mold cavity block, and the mold cavity block is provided with a plurality of mold cavity grooves at an opening at one end of the mold base block;

[0007] A pump tube plate is embedded in one end of the die base block relative to the die cavity block, and a plurality of branch pipe heads are plugged into the pump tube plate. An internal pipe is extended from the branch pipe head toward the inner end of the die base block. A diverter valve plate connected to the internal pipe is embedded in the connecting plate, and a plurality of branch plugs are connected in series to the other end of the diverter valve plate connected to the internal pipe.

[0008] A circulation pipe is provided in the mold cavity block, and the circulation pipe is tightly fitted with the outer wall of the mold cavity groove. A mesh pipe is extended from the circulation pipe to the connecting plate end, and the mesh pipe is connected with the branch plug.

[0009] Furthermore, an air pump valve is plugged into the mold base block, and the air pump valve extends inwardly to the branch pipe head and the internal pipe joint.

[0010] Furthermore, a compression pump is externally connected to the connecting end of the inner through pipe and the diverter valve port disc.

[0011] Furthermore, a flow channel row is connected between the diverter valve orifice disc and the branch plug, and the flow channel row is a plate-type flow channel structure.

[0012] Furthermore, the branch plug and the network drainage pipe are vertically docked structures.

[0013] Furthermore, the circulating pipe is a grid-type pipe structure with horizontal and vertical intersections.

[0014] Furthermore, branch pipes are connected between each longitudinal passage segment of the network drainage pipe and the circulating pipe.

[0015] Furthermore, a heat-saturating plate is filled between the circulating pipe and the outer wall of the mold cavity.

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

[0017] This mold structure for bottle cap injection molding uses a circularly arranged circulation pipe to achieve intermittent rapid cooling of the mold cavity groove according to the distribution pattern of the bottle cap mold cavity groove in the fixed mold structure of the injection molding machine. The circulation pipe is divided into various internal pipes and diversion valve orifice plates through an external branch pipe head, and can quickly cool the mold cavity along the circulation pipe pipeline, thereby ensuring the cooling effect while improving the cooling efficiency of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal planar structure of the mold base block of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal planar structure of the mold cavity block of the present invention.

[0021] Markings in the figure: 1-mold base block; 2-mold cavity block; 3-connecting plate; 4-pump tube plate; 5-branch head; 6-air pump valve; 7-internal pipe; 8-compression pump; 9-diverter valve plate; 10-branch plug; 11-flow channel row; 12-mold cavity groove; 13-circulation pipe; 14-net drainage pipe. DETAILED DESCRIPTION

[0022] See also Figure 1-3 , further illustrate the embodiments of the present utility model;

[0023] A mold structure for injection molding of bottle caps, comprising a mold base block 1 and a mold cavity block 2, wherein the mold base block 1 and the mold cavity block 2 are symmetrically arranged at both ends, a connecting plate 3 is fixed on both sides between the mold base block 1 and the mold cavity block 2, and a plurality of mold cavity grooves 12 are provided in an opening at one end of the mold cavity block 2 relative to the mold base block 1;

[0024] A pump tube plate 4 is embedded in one end of the die base block 1 relative to the die cavity block 2, and a plurality of branch pipe heads 5 are plugged into the pump tube plate 4. An internal pipe 7 extends from the branch pipe head 5 to the inner end of the die base block 1. A diverter valve plate 9 connected to the internal pipe 7 is embedded in the connecting plate 3, and a plurality of branch plugs 10 are connected in series to the other end of the diverter valve plate 9 connected to the internal pipe 7.

[0025] A circulation pipe 13 is provided in the mold cavity block 2 , and the circulation pipe 13 is tightly fitted with the outer wall of the mold cavity groove 12 . A mesh drain pipe 14 extends from the circulation pipe 13 to the end of the connecting plate 3 , and the mesh drain pipe 14 is connected to the branch plug 10 .

[0026] In this mold structure, the external pipe is mainly connected through the branch pipe head 5 inserted on the pump pipe plate 4. The distribution of multiple groups of branch pipe heads 5 facilitates the diversion of the cooling medium entering and leaving the branch pipe head 5, so that the cooling medium circulates in the structure.

[0027] The cooling medium mainly enters the inner tube 7 along the branch pipe head 5, and is diverted to various flow channels in the diverter valve plate 9. The flow channels are transmitted to the mesh pipe 14 of the cavity block 2 through the branch plug 10, and finally flow into the circulation pipe 13 through the diversion of the mesh pipe 14. The cavity groove 12 is quickly cooled by utilizing the contact between the circulation pipe 13 and the cavity groove 12. Its structure takes into account the characteristic of the short depth of the bottle cap injection molding cavity, and utilizes the internal surrounding flow channel structure to quickly cool the cavity groove 12, thereby improving the cooling efficiency while ensuring the cooling effect, so as to shorten the cooling interval time required for mold separation and mold closing during the bottle cap injection molding process, thereby improving the practicality of the structure.

[0028] Preferably, an air pump valve 6 is inserted into the mold base block 1, and the air pump valve 6 extends inward to the joint between the branch pipe head 5 and the inner tube 7. The air pump valve 6 can be connected to an external air pump to cut off the connection between the branch pipe head 5 and the inner tube 7 under a single pipeline by turning on and off the valve body of the air pump valve 6, thereby facilitating the control of the entry and exit status of each branch pipe head 5 and the inner tube 7.

[0029] Preferably, a compression pump 8 is externally connected to the connecting end of the internal pipe 7 and the diverter valve plate 9, and the compression pump 8 can be used to pressurize and deliver the cooling medium flowing into the diverter valve plate 9 so as to balance the flow rate of the cooling medium of each diverter flow.

[0030] Preferably, a flow channel row 11 is connected between the diverter valve orifice plate 9 and the branch plug 10. The flow channel row 11 is a plate-type flow channel structure. The plate-surface flow channel can average the diversion flow between the branch plug 10 and each branch flow channel of the diverter valve orifice plate 9.

[0031] Preferably, the tributary plug 10 and the network pipe 14 are vertically docked structures. The vertical connection structure between the tributary plug 10 and the network pipe 14 can prevent the axial convection air pressure of the network pipe 14 from acting on the tributary plug 10, so as to ensure the stability of the inlet and outlet flow of the tributary plug 10.

[0032] Preferably, the circulation pipe 13 is a grid-type pipeline structure intersecting horizontally and vertically. The grid-type pipeline structure can cooperate with the distribution of the mold cavity grooves 12 to perform rapid diversion circulation, thereby improving the internal circulation efficiency of the cooling medium.

[0033] Preferably, branch pipes are connected between the mesh pipes 14 and each longitudinal passage segment of the circulation pipe 13, and the rate at which the diverted cooling medium enters each longitudinal passage of the circulation pipe 13 is further increased through the branches of the mesh pipes 14 and the circulation pipe 13.

[0034] Preferably, a heat-dissipating plate is filled between the circulation tube 13 and the outer wall of the mold cavity groove 12, and the heat conduction rate between the circulation tube 13 and the mold cavity groove 12 is further improved by the filled heat-conducting material.

[0035] The embodiment of the device is:

[0036] This structure is connected to the external cooling source pipeline through the branch head 5 inserted on the pump tube plate 4. The cooling medium flowing in from the branch head 5 will enter the inner tube 7 and will be subsequently diverted to each flow channel in the diverter valve plate 9. During this period, the air pump valve 6 can be used to cut off and control the branch flow of a single branch head 5 and the inner tube 7 for inlet and outlet control. At the same time, the compression pump 8 can be used to compress the branch flow in the diverter valve plate 9 to maintain the subsequent flow rate of the branch flow. The cooling medium is transmitted to the mesh pipe 14 of the mold cavity block 2 through the flow channel row 11 and the branch plug 10 in the flow channel, and finally flows into the circulation pipe 13 through the diversion of the mesh pipe 14. The mold cavity groove 12 is quickly cooled by utilizing the contact between the circulation pipe 13 and the mold cavity groove 12.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A mold structure for injection molding of bottle caps, characterized by: The mold base block (1) and the mold cavity block (2) are symmetrically arranged at both ends, a connecting plate (3) is fixed on both sides between the mold base block (1) and the mold cavity block (2), and a plurality of mold cavity grooves (12) are provided at an opening at one end of the mold base block (1); A pump tube plate (4) is embedded in one end of the die base block (1) relative to the die cavity block (2), and a plurality of branch pipe heads (5) are plugged into the pump tube plate (4). An internal pipe (7) is extended from the branch pipe head (5) toward the inner end of the die base block (1). A diverter valve port disc (9) connected to the internal pipe (7) is embedded in the connecting plate (3), and a plurality of branch plugs (10) are connected in series to the other end of the diverter valve port disc (9) connected to the internal pipe (7). A circulation pipe (13) is provided in the mold cavity block (2), and the circulation pipe (13) is tightly fitted with the outer wall of the mold cavity groove (12). A net drain pipe (14) is extended from the circulation pipe (13) toward the end of the connecting plate (3), and the net drain pipe (14) is connected to the branch plug (10).

2. The mold structure for bottle cap injection molding according to claim 1, characterized in that: An air pump valve (6) is inserted and provided on the mold base block (1), and the air pump valve (6) extends inwardly to the joint between the branch pipe head (5) and the inner through pipe (7).

3. The mold structure for bottle cap injection molding according to claim 1, characterized in that: The connecting end of the internal communication pipe (7) and the diverter valve port disc (9) is externally connected to a compression pump (8).

4. The mold structure for bottle cap injection molding according to claim 1, characterized in that: A flow channel row (11) is connected between the diverter valve port disc (9) and the branch plug (10), and the flow channel row (11) is a plate-type flow channel structure.

5. The mold structure for bottle cap injection molding according to claim 1, characterized in that: The branch plug (10) and the net drain pipe (14) are in a vertical docking structure.

6. The mold structure for bottle cap injection molding according to claim 1, characterized in that: The circulating pipe (13) is a grid-type pipe structure with horizontal and vertical intersections.

7. The mold structure for bottle cap injection molding according to claim 6, characterized in that: Branch pipelines are connected between each longitudinal passage segment of the network drainage pipe (14) and the circulation pipe (13).

8. The mold structure for bottle cap injection molding according to claim 1, characterized in that: A heat-saturating plate is filled between the circulating pipe (13) and the outer wall of the mold cavity groove (12).

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