Modular injection nozzle structure of bottle cap injection molding machine

Abstract

The utility model provides a modularized injection nozzle structure of a bottle cap injection molding machine, and relates to the technical field of plastic processing, the modularized injection nozzle structure comprises a main push pipe, a heat preservation pipe and an auxiliary push pipe, the heat preservation pipe and the auxiliary push pipe are respectively arranged at two ends of the main push pipe in a penetrating manner, and a compression cavity is formed in the main push pipe; a nozzle pipe is inserted into the end, opposite to the main push pipe, of the heat preservation pipe, and a driven shaft pipe penetrates through the space between the nozzle pipe and the heat preservation pipe. The injection molding machine has the advantages that the main push pipe, the heat preservation pipe, the nozzle pipe and the auxiliary push pipe which are arranged in a modularized mode are adopted to complete the segmented injection action, and injection molding materials sequentially pass through the auxiliary push pipe, a compression cavity in the main push pipe, the heat preservation pipe and the nozzle pipe, so that the feeding compression actions of the electric push rod and the push handle can be staggered in the compression cavity; and the injection molding material pushed and extruded in the compression cavity is compressed into the pipeline by utilizing the driven shaft pipe, and is finally injected out through the nozzle pipe orifice.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, and relates to a modular injection nozzle structure of a bottle cap injection molding machine. Background Art

[0002] The bottle cap is fastened to the bottle mouth by cooperating with the bottle mouth to prevent leakage of the bottle contents and invasion of external bacteria. After tightening the bottle cap, the bottle mouth goes deep into the bottle cap and hits the sealing pad. The inner groove of the bottle mouth and the thread of the bottle cap are in close contact with each other, providing pressure for the sealing surface. Several sealing structures can effectively prevent leakage or deterioration of the contents in the bottle.

[0003] During the injection molding process, the injection molding machine uses an electric push rod structure to squeeze the material in the nozzle pipeline along the way to the nozzle end, and completes the injection molding as the nozzle platform protrudes and penetrates into the mold cavity. The existing nozzle structure is usually an integrated tube body with an internal push rod for feeding and advancing. After the extrusion activity, residual material is likely to remain in the inner cavity. The push rod structure that has undergone multiple piston actions is prone to accumulation of residual material, which affects the difference in material feeding before and after, and then affects the feed flow stability of subsequent injection molding actions. Utility Model Content

[0004] In view of the above technical problems existing in the prior art, a modular nozzle structure of a bottle cap injection molding machine is provided.

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

[0006] A modular nozzle structure of a bottle cap injection molding machine comprises a main push tube, a heat preservation tube and an auxiliary push tube, wherein the heat preservation tube and the auxiliary push tube are respectively arranged at both ends of the main push tube, and a compression chamber is formed in the main push tube;

[0007] The insulation tube is plugged with a nozzle tube at one end relative to the main push tube, a driven shaft tube is penetrated between the nozzle tube and the insulation tube, and a shaft core is provided between the end of the nozzle tube and the driven shaft tube, and the driven shaft tube is plugged with the compression chamber;

[0008] An electric push rod is rotatably arranged in the auxiliary push tube, a push handle is fixed to one end of the electric push rod close to the main push tube, and the push handle passes through the compression chamber, and a transmission shaft is rotatably arranged at the other end of the electric push rod.

[0009] Furthermore, the thermal insulation tube is slidably matched with the outer end of the compression chamber, and a spring member is filled and arranged between the thermal insulation tube and the outer end of the compression chamber.

[0010] Furthermore, both ends of the driven shaft tube are of tapered structure, and a step surface for limiting is arranged outside the connecting end of the driven shaft tube and the compression chamber.

[0011] Furthermore, an injection groove is left at the inner end of the nozzle tube and the end of the shaft core piece.

[0012] Furthermore, the diameter of the push handle matches the diameter of the driven shaft tube.

[0013] Furthermore, a die seat is sleeved on one end of the auxiliary push tube relative to the main push tube, and an inlet valve tube is provided between the outer side of the die seat and the auxiliary push tube.

[0014] Furthermore, the transmission shaft passes through the die base, and the die base has a docking groove at the end of the transmission shaft.

[0015] Furthermore, a transfer shaft is provided between the transmission shaft and the electric push rod for transmission cooperation.

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

[0017] This nozzle structure adopts a modular main push tube, insulation tube, nozzle tube and auxiliary push tube structure to complete the segmented injection action. The injection material passes through the auxiliary push tube, the compression chamber inside the main push tube, the insulation tube and the nozzle tube in sequence, so that the feeding and compression actions of the electric push rod and the push handle can be staggered in the compression chamber, and the driven shaft tube is used to compress the injection material pushed and extruded in the compression chamber into the pipeline, and finally injected out through the nozzle tube orifice. Compared with the traditional nozzle structure, the modular distributed pipeline structure can avoid local residue of injection material in the single pipeline structure when the push rod is active, ensure that the material is quickly extruded from the compression chamber and fed to the nozzle tube end, and improve the stability of the nozzle 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 It is a schematic diagram of the internal plane structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal planar structure of the mold base of the utility model.

[0021] Markings in the figure: 1-main push tube; 2-insulation tube; 3-nozzle tube; 4-auxiliary push tube; 5-die base; 6-compression chamber; 7-spring member; 8-push handle; 9-electric push rod; 10-driven shaft tube; 11-shaft core member; 12-transmission shaft; 13-inlet valve tube; 14-adapter shaft joint. DETAILED DESCRIPTION

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

[0023] A modular nozzle structure of a bottle cap injection molding machine comprises a main push tube 1, a heat preservation tube 2 and an auxiliary push tube 4. The heat preservation tube 2 and the auxiliary push tube 4 are respectively arranged at both ends of the main push tube 1. A compression chamber 6 is formed in the main push tube 1.

[0024] A nozzle tube 3 is inserted and arranged at one end of the insulation tube 2 relative to the main push tube 1, a driven shaft tube 10 is penetrated and arranged between the nozzle tube 3 and the insulation tube 2, and a shaft core 11 is arranged between the end of the nozzle tube 3 and the driven shaft tube 10, and the driven shaft tube 10 is inserted and matched with the compression chamber 6;

[0025] An electric push rod 9 is rotatably provided in the auxiliary push tube 4 , a push handle 8 is fixed to one end of the electric push rod 9 close to the main push tube 1 , and the push handle 8 passes through the compression chamber 6 , and a transmission shaft 12 is rotatably provided at the other end of the electric push rod 9 .

[0026] The nozzle structure mainly uses the auxiliary push tube 4 as the filling end of the injection material, and uses the push handle 8 to fill the injection material in the tube into the compression chamber 6 through the spiral feeding activity of the electric push rod 9. As the feeding action proceeds, the injection material in the compression chamber 6 can be compressed and pushed into the driven shaft tube 10 with the feeding of the electric push rod 9, and injected out through the pipe opening between the shaft core 11 and the nozzle tube 3. The driven shaft tube 10 and the auxiliary push tube 4 arranged at both ends of the compression chamber 6 can use their separated pipeline structures to store the material to be injected, the injected material and the filling material in the pipeline in sections, so as to avoid the situation where the traditional one-way pipeline is affected by the push rod activities of the front and rear sequences and there are residues;

[0027] Compared with the traditional nozzle structure, the nozzle avoids the situation where there are internal injection residues in the single-channel pipeline structure, so as to avoid the influence of the accumulation of residues on the feed flow rate during subsequent feeding. At the same time, the segmented arrangement structure of the main push tube 1, the insulation tube 2 and the auxiliary push tube 4 facilitates the subsequent disassembly, cleaning and maintenance, thereby improving the practicality of the nozzle structure.

[0028] Preferably, the insulation tube 2 is slidably matched with the outer end of the compression chamber 6, and a spring member 7 is filled between the insulation tube 2 and the outer end of the compression chamber 6. Through the elastic insulation tube 2 and the main push tube 1 docking structure, when the nozzle platform and the mold are closed, the end of the insulation tube 2 is compressed and stretched along the main push tube 1 to make the driven shaft tube 10 in the insulation tube 2 penetrate into the compression chamber 6, and the axial movement of the electric push rod 9 and the push handle 8 is coordinated to quickly extrude the injection material into the driven shaft tube 10, thereby improving the injection efficiency.

[0029] Preferably, both ends of the driven shaft tube 10 are of tapered structure, and a step surface for limiting is provided on the outside of the connecting end between the driven shaft tube 10 and the compression chamber 6, so that the setting of the driven shaft tube 10 limiting step surface is used to limit the deep position of the driven shaft tube 10 to avoid mutual influence between the movement of the driven shaft tube 10 and the movement of the electric push rod 9.

[0030] Preferably, an injection groove is left between the inner end of the nozzle tube 3 and the end of the shaft core member 11, and the size of the injection groove is flexibly adjusted by the injection groove between the shaft core member 11 and the nozzle tube 3, that is, the groove is reduced when the internal pressure of the driven shaft tube 10 is low, and the groove is opened when the internal pressure is high.

[0031] Preferably, the diameter of the push handle 8 matches the diameter of the driven shaft tube 10 , and the matched calibers of the driven shaft tube 10 and the push handle 8 are adapted to the channels at both ends of the compression chamber 6 to ensure the consistency of the input and output flow rates of the compression chamber 6 .

[0032] Preferably, a mold base 5 is sleeved on one end of the auxiliary push tube 4 relative to the main push tube 1, and an inlet valve tube 13 is provided between the outer side of the mold base 5 and the auxiliary push tube 4. The nozzle structure is connected to the feed input end through the mold base 5 to connect the injection material pipeline to the inlet valve tube 13, and the auxiliary push tube 4 is used as the input pipeline of the injection material.

[0033] Preferably, the transmission shaft 12 passes through the mold base 5, and the mold base 5 has a docking groove at the end of the transmission shaft 12. The nozzle structure uses the mold base 5 as the docking end of the feed transmission structure, and docks the transmission structure with the docking groove.

[0034] Preferably, a transmission adapter joint 14 is provided between the transmission shaft 12 and the electric push rod 9, and the rotational force of the electric push rod 9 and the transmission shaft 12 is limited between the auxiliary push tube 4 and the mold base 4 through the adapter joint 14, and the adapter joint 14 is used as a bearing as the axis center point of the spiral propulsion of the electric push rod 9.

[0035] The implementation method of the device is:

[0036] During injection, the nozzle structure successively utilizes the injection material pipeline to fill the injection material into the auxiliary push tube 4 along the inlet valve tube 13, and as the power source at the connecting end of the transmission shaft 12 feeds, the electric push rod 9 is rotated in the axial direction of the adapter shaft section 14 to push the electric push rod 9, and the movement of the electric push rod 9 in the auxiliary push tube 4 is utilized to fill the injection material into the compression chamber 6. Synchronously, the movement of the electric push rod 9 will squeeze the injection material in the compression chamber 6 into the driven shaft tube 10 through the push handle 8. As the nozzle platform and the mold move, The mold is closed, and the action of the nozzle penetrating into the mold cavity will synchronously reversely compress the nozzle tube 3, and the main push tube 1 is compressed inwardly through the nozzle tube 3 and the insulation tube 2, so as to utilize the axial movement of the driven shaft tube 10 to penetrate into the compression cavity 6, and with the feeding and extrusion of the push handle 8, the extrusion feeding of the injection material is quickly completed, and finally the end of the nozzle tube 3 is opened through the axial movement of the shaft core member 11 after being compressed, the injection action is completed, and the spring member 7 is used to reset the insulation tube 2 and the driven shaft tube 10 for the next injection molding.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the 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 modular nozzle structure for a bottle cap injection molding machine, characterized in that: It comprises a main push tube (1), a heat preservation tube (2) and an auxiliary push tube (4), wherein the heat preservation tube (2) and the auxiliary push tube (4) are respectively arranged at both ends of the main push tube (1), and a compression chamber (6) is formed in the main push tube (1); The insulation tube (2) is provided with a nozzle tube (3) at one end thereof relative to the main push tube (1), a driven shaft tube (10) is provided between the nozzle tube (3) and the insulation tube (2), and a shaft core piece (11) is provided between the end of the nozzle tube (3) and the driven shaft tube (10), and the driven shaft tube (10) is plugged and matched with the compression chamber (6); An electric push rod (9) is rotatably arranged in the auxiliary push tube (4), a push handle (8) is fixed to one end of the electric push rod (9) close to the main push tube (1), and the push handle (8) passes through the compression chamber (6), and a transmission shaft (12) is rotatably arranged at the other end of the electric push rod (9).

2. A modular nozzle structure for a bottle cap injection molding machine according to claim 1, characterized in that: The heat preservation pipe (2) is slidably matched with the outer end of the compression chamber (6), and a spring member (7) is filled and arranged between the heat preservation pipe (2) and the outer end of the compression chamber (6).

3. The modular nozzle structure of a bottle cap injection molding machine according to claim 1, characterized in that: Both ends of the driven shaft tube (10) are of tapered structure, and a step surface for limiting position is arranged outside the connecting end between the driven shaft tube (10) and the compression chamber (6).

4. The modular nozzle structure of a bottle cap injection molding machine according to claim 1, characterized in that: An injection groove is left between the inner end of the nozzle tube (3) and the end of the shaft core piece (11).

5. The modular nozzle structure of a bottle cap injection molding machine according to claim 1, characterized in that: The diameter of the push handle (8) matches the diameter of the driven shaft tube (10).

6. The modular nozzle structure of a bottle cap injection molding machine according to claim 1, characterized in that: A die seat (5) is sleeved on one end of the auxiliary push tube (4) relative to the main push tube (1), and an inlet valve tube (13) is provided between the outer side of the die seat (5) and the auxiliary push tube (4).

7. A modular nozzle structure for a bottle cap injection molding machine according to claim 6, characterized in that: The transmission shaft (12) passes through the die base (5), and the die base (5) has a docking groove at the end of the transmission shaft (12).

8. The modular nozzle structure of a bottle cap injection molding machine according to claim 1, characterized in that: A transfer shaft joint (14) is provided between the transmission shaft (12) and the electric push rod (9) for transmission cooperation.

Images