Plastic injection blow molding device and molding method

Abstract

The plastic injection-blow molding device comprises a base, a transverse moving sliding block is arranged at the top of a vertical frame on the upper side of the base through a lead screw, an injection-blow head is arranged on the lower side of the transverse moving sliding block through a first air cylinder, and one side of the upper end of the injection-blow head is connected with a material storage box through a material conveying pipe and a material conveying pump; the vertical frame is rotationally provided with a fixed mold base through a first connecting arm and a connecting shaft, one end of the connecting shaft is in transmission connection with a motor through a gear set, one side of the fixed mold base is provided with a movable mold base through a second connecting arm and a second air cylinder, and blow molding grooves and air cooling heat dissipation holes are formed in the fixed mold base and the movable mold base correspondingly. The mold base is rotationally arranged on one side of the vertical frame through the first connecting arm and the connecting shaft, so that the motor drives the connecting shaft to rotate and adjust, the use state of the mold base can be adjusted, when the mold base rotates, the air cooling mechanism is used for conveniently carrying out air cooling treatment on the mold base, and the injection blow molding machining efficiency is conveniently improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection blow molding equipment, in particular to a plastic injection blow molding device and a molding method. Background Art

[0002] In the injection blow molding process, the injection machine first injects the molten plastic into the injection mold to form a tube blank, which is formed on the hollow convex mold with micropores on the surrounding wall; then it is moved to the blow mold while hot; then the mold is closed and compressed air is introduced from the pipe of the core rod to inflate the blank and stick it to the cavity wall of the mold; finally, after pressure maintenance and cooling, the compressed air is released and the mold is opened to remove the plastic part. Plastic bottles are a commonly used container, widely used in medical liquid containers, beverage containers, seasoning containers, etc., and the demand is very large. Plastic bottles are made from bottle blanks. The bottle blank is formed by filling the raw materials into the mold cavity of the mold under specific temperature and pressure by injection molding, and is formed into a semi-finished intermediate by injection molding, and then blow molded into a plastic bottle.

[0003] A new type of plastic bottle injection blow molding device with application number 202410142796.8 in the prior art includes a base plate installed in a plastic bottle factory. The new type of plastic bottle injection blow molding device, through the cooperation of a first air outlet pipe and a second air outlet pipe, can prevent the plastic bottle from directly colliding with a discharge box and causing deformation of the plastic bottle, and can adjust the direction of the plastic bottle for centralized collection. However, the use state of the mold base cannot be adjusted, and the air cooling effect is poor. Summary of the invention

[0004] The object of the present invention is to provide a plastic injection blow molding device and a molding method to solve the problems in the prior art that the use state of the mold base cannot be adjusted and the air cooling effect is poor.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic injection blow molding device, comprising a base, a vertical frame is provided on the upper side of the base, a transverse sliding block is provided on the top of the vertical frame through a connecting plate and a lead screw, an injection blowing head is provided on the lower side of the transverse sliding block through a first cylinder, so that the injection blowing head can be driven by the lead screw to move transversely and adjust, which is convenient for injection blowing treatment of blow molding grooves at different positions, and further improves the efficiency of injection blow molding processing, one side of the upper end of the injection blowing head is connected to a material storage box through a feed pipe and a feed pump, one side of the middle part of the vertical frame is rotatably provided with a fixed mold base through a first connecting arm and a connecting shaft, one end of the connecting shaft is connected to a motor through a gear set transmission, one side of the fixed mold base is provided with a movable mold base through a second connecting arm and a second cylinder, and blow molding grooves and air-cooling heat dissipation holes are provided inside the fixed mold base and the movable mold base, and an air cooling mechanism is also provided on one side of the vertical frame.

[0006] Furthermore, the first connecting arm is vertically welded to the side wall of the stand, and the motor is fixedly installed on the outer wall of the first connecting arm through a machine base, so that the use state of the mold base can be adjusted by driving the connecting shaft to rotate and adjust by the motor. When the mold base rotates, the air cooling mechanism is used to facilitate air cooling of the mold base, thereby improving the efficiency of the injection blow molding process.

[0007] Furthermore, one side of the injection-blowing head is connected to an air pump via an air blowing pipe, and the air pump is fixedly arranged on the outer wall of the transverse sliding block.

[0008] Furthermore, a limiting slide groove is also provided on the top of the vertical frame, and one side of the transverse sliding block is slidably arranged through the limiting sliding block and the limiting slide groove.

[0009] Furthermore, a plurality of the blow molding grooves are arranged at equal intervals, and a plurality of air-cooling and heat dissipation holes are arranged in a circular array on the outer side of a single blow molding groove.

[0010] Furthermore, the air cooling mechanism includes an air cooling pipe arranged on one side of the stand, and one side of the air cooling pipe is connected to an air supply pipe and a blower through a connecting pipe.

[0011] Furthermore, the air cooling tube is an annular tube, and a plurality of blowing ports are provided on one side of the air cooling tube. The number of the air cooling tubes is arranged in one-to-one correspondence with the number of the blow molding slots, so as to facilitate air cooling of the mold base and to accurately deliver the wind from the blowing ports into the corresponding air cooling and heat dissipation holes, so that each air cooling and heat dissipation hole can input wind force of the same pressure, thereby improving the uniformity of air cooling and heat dissipation.

[0012] A plastic injection blow molding method, using the plastic injection blow molding device, comprises the following steps:

[0013] S1. Insert the injection blow head into the upper part of the blow molding tank, and store the injection molded slurry in the storage box;

[0014] S2, inject a certain amount of raw materials into the injection blow head through the feed pipe and feed pump, and then perform blow molding through the blow pump and blow pipe;

[0015] S3, after the single blow molding groove is processed, the blow molding groove is continuously moved downward;

[0016] S4. The mold base is rotatably arranged on one side of the stand through the first connecting arm and the connecting shaft. One end of the connecting shaft is connected to a motor through a gear set. The motor drives the connecting shaft to rotate and adjust. When the mold base rotates, the air cooling mechanism is used to facilitate air cooling of the mold base.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention rotatably sets the mold base on one side of the stand through the first connecting arm and the connecting shaft. One end of the connecting shaft is connected to a motor through a gear set, so that the use state of the mold base can be adjusted by driving the connecting shaft to rotate and adjust by the motor. When the mold base rotates, the mold base is conveniently cooled by air cooling mechanism, so as to improve the efficiency of injection blow molding processing.

[0019] 2. In the present invention, a transverse sliding block is provided at the top of the vertical frame through a connecting plate and a lead screw, and an injection blowing head is provided at the lower side of the transverse sliding block through a first cylinder, so that the injection blowing head can be driven by the lead screw to adjust the transverse movement, which is convenient for injection blowing treatment of blow molding grooves at different positions, and further improves the efficiency of injection blow molding processing.

[0020] 3. The present invention provides a plurality of air-cooling and heat-dissipating holes in a circular array on the outer side of a single blow molding slot. The air-cooling pipe of the air-cooling mechanism is an annular pipe, and a plurality of blowing ports are provided on one side of the air-cooling pipe. The number of the air-cooling pipes corresponds to the number of the blow molding slots, so that the wind from the blowing ports can be accurately delivered to the corresponding air-cooling and heat-dissipating holes, so that each air-cooling and heat-dissipating hole can input wind force of the same pressure, thereby improving the uniformity of air-cooling and heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0023] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the movable mold base of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the air cooling mechanism of the present invention.

[0026] In the figure: 1. base; 2. stand; 3. lead screw; 4. transverse slide block; 5. first cylinder; 6. injection and blowing head; 7. feed pipe; 8. feed pump; 9. storage box; 10. blow pump; 11. blow pipe; 12. connecting plate; 13. first connecting arm; 14. connecting shaft; 15. gear set; 16. motor; 17. fixed mold base; 18. movable mold base; 19. air cooling heat dissipation hole; 20. second connecting arm; 21. second cylinder; 22. blow molding groove; 23. air cooling pipe; 24. connecting pipe; 25. air supply pipe; 26. blower; 27. air blowing port. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 In an embodiment of the present invention, a plastic injection blow molding device includes a base 1, a stand 2 is provided on the upper side of the base 1, a transverse sliding block 4 is provided on the top of the stand 2 through a connecting plate 12 and a lead screw 3, an injection blowing head 6 is provided on the lower side of the transverse sliding block 4 through a first cylinder 5, and a material storage box 9 is connected to one side of the upper end of the injection blowing head 6 through a feeding pipe 7 and a feeding pump 8, so that the injection blowing head 6 is driven by the lead screw 3 to move horizontally and adjust, which is convenient for injection blowing treatment of blow molding grooves 22 at different positions, and further improves the efficiency of injection blow molding processing, and a fixed mold base 17 and a movable mold base 18 are rotatably provided on one side of the middle part of the stand 2 through a first connecting arm 13 and a connecting shaft 14, and a blowing pump 10 is also connected to one side of the injection blowing head 6 through a blowing pipe 11, and the blowing pump 10 is fixedly arranged on the outer wall of the transverse sliding block 4, and a blowing groove 22 and an air-cooling heat dissipation hole 19 are provided inside the fixed mold base 17 and the movable mold base 18, which is convenient for air cooling treatment of the mold base.

[0029] like Figure 1 and Figure 2 As shown, in order to improve the efficiency of the injection blow molding process, a motor 16 is also connected to one end of the connecting shaft 14 through a gear set 15, the first connecting arm 13 is vertically welded to the side wall of the stand 2, and the motor 16 is fixedly installed on the outer wall of the first connecting arm 13 through a machine base, so that the motor 16 drives the connecting shaft 14 to rotate and adjust, so as to adjust the use state of the mold base. When the mold base rotates, the air cooling mechanism is used to facilitate air cooling of the mold base, so as to improve the efficiency of the injection blow molding process.

[0030] like Figure 3 and Figure 4As shown, in order to improve the uniformity of air-cooling and heat dissipation, a plurality of blow molding grooves 22 are arranged at equal intervals, and a plurality of air-cooling and heat dissipation holes 19 are arranged in a circular array on the outer side of a single blow molding groove 22. An air-cooling mechanism is also arranged on one side of the stand 2, and the air-cooling mechanism includes an air-cooling pipe 23 arranged on one side of the stand 2. One side of the air-cooling pipe 23 is connected to an air supply pipe 25 and a blower 26 through a connecting pipe 24. The air-cooling pipe 23 is an annular pipe, and one side of the air-cooling pipe 23 is provided with a plurality of blowing ports 27. The number of the air-cooling pipes 23 is arranged in a one-to-one correspondence with the number of the blow molding grooves 22, so as to facilitate air-cooling treatment of the mold base, and the wind from the blowing ports 27 can be accurately delivered to the corresponding air-cooling and heat dissipation holes 19, so that each air-cooling and heat dissipation hole 19 can input wind force of the same pressure, so as to improve the uniformity of air-cooling and heat dissipation.

[0031] like Figure 1 and Figure 3 As shown, in order to remove the material, the movable mold base 18 is fixedly installed on one side of the fixed mold base 17 through the second connecting arm 20 and the second cylinder 21, so that the movable mold base 18 can be driven by the second cylinder 21 to move horizontally and adjust, thereby facilitating the material removal process.

[0032] like Figure 1 and Figure 2 As shown, in order to improve the accuracy of movement and adjustment of the injection blowing head 6, a limit slide groove is also provided on the top of the vertical frame 2, and one side of the transverse sliding block 4 is slidingly arranged through the limit slide block and the limit slide groove, which is used to slide and guide the transverse sliding block 4 when it moves and adjusts, which is beneficial to improve the accuracy of movement and adjustment of the injection blowing head 6.

[0033] A plastic injection blow molding method, using the plastic injection blow molding device, comprises the following steps:

[0034] S1, insert the injection blow head 6 into the upper part of the blow molding tank 22, and store the injection molded slurry in the storage box 9;

[0035] S2, injecting a certain amount of raw material into the injection blow head 6 through the material delivery pipe 7 and the material delivery pump 8, and then performing blow molding through the blowing pump 10 and the blowing pipe 11;

[0036] S3, after the single blow molding groove 22 is processed, the blow molding groove 22 is continuously moved downward;

[0037] S4. The mold base is rotatably arranged on one side of the stand 2 through the first connecting arm 13 and the connecting shaft 14. One end of the connecting shaft 14 is connected to the motor 16 through the gear set 15. The connecting shaft 14 is driven by the motor 16 to rotate and adjust. When the mold base rotates, the air cooling mechanism is used to facilitate air cooling of the mold base.

[0038] The working principle and use process of the present invention are as follows: when in use, the injection blowing head 6 is inserted into the upper part of the blow molding groove 22, the injection molding slurry is stored in the storage box 9, and a certain amount of raw materials are injected into the injection blowing head 6 through the feeding pipe 7 and the feeding pump 8, and then the blow molding process is carried out through the blowing pump 10 and the blowing pipe 11. After the processing of a single blow molding groove 22 is completed, the blow molding groove 22 is moved downward, and the mold base is rotatably arranged on one side of the stand 2 through the first connecting arm 13 and the connecting shaft 14. One end of the connecting shaft 14 is connected to the motor 16 through the gear set 15, so that the motor 16 drives the connecting shaft 14 to rotate and adjust, and the use state of the mold base can be adjusted. When the mold base rotates, the air cooling mechanism is used to facilitate air cooling of the mold base, so as to improve the efficiency of the injection blow molding process.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plastic injection blow molding device, comprising a base (1), characterized in that: A stand (2) is provided on the upper side of the base (1), a transverse sliding block (4) is provided on the top of the stand (2) through a screw (3), an injection blowing head (6) is provided on the lower side of the transverse sliding block (4) through a first cylinder (5), one side of the upper end of the injection blowing head (6) is connected to a material storage box (9) through a material delivery pipe (7) and a material delivery pump (8), a fixed mold base (17) is rotatably provided on one side of the middle part of the stand (2) through a first connecting arm (13) and a connecting shaft (14), one end of the connecting shaft (14) is connected to a motor (16) through a gear set (15), a movable mold base (18) is provided on one side of the fixed mold base (17), and both the fixed mold base (17) and the movable mold base (18) are provided with a blow molding groove (22) and an air cooling heat dissipation hole (19), and an air cooling mechanism is also provided on one side of the stand (2).

2. A plastic injection blow molding device according to claim 1, characterized in that: The first connecting arm (13) is vertically welded to the side wall of the stand (2), and the motor (16) is fixedly mounted on the outer wall of the first connecting arm (13) via a machine base.

3. A plastic injection blow molding device according to claim 1, characterized in that: One side of the injection and blowing head (6) is also connected to a blowing pump (10) via a blowing pipe (11), and the blowing pump (10) is fixedly arranged on the outer wall of the transverse sliding block (4).

4. A plastic injection blow molding device according to claim 3, characterized in that: A limiting slide groove is also provided at the top of the vertical frame (2), and one side of the transverse sliding block (4) is slidably arranged through the limiting slide block and the limiting slide groove.

5. A plastic injection blow molding device according to claim 1, characterized in that: A plurality of the blow molding grooves (22) are arranged at equal intervals, and a plurality of air-cooling and heat dissipation holes (19) are arranged in a circular array on the outer side of a single blow molding groove (22).

6. A plastic injection blow molding device according to claim 1, characterized in that: The air cooling mechanism comprises an air cooling pipe (23) arranged on one side of the stand (2); one side of the air cooling pipe (23) is connected to an air supply pipe (25) and a blower (26) via a connecting pipe (24).

7. A plastic injection blow molding device according to claim 6, characterized in that: The air cooling pipe (23) is an annular pipe, and a plurality of air blowing ports (27) are provided on one side of the air cooling pipe (23). The number of the air cooling pipes (23) is arranged in one-to-one correspondence with the number of the blow molding slots (22).

8. A plastic injection blow molding method, characterized in that: A plastic injection blow molding device according to any one of claims 1 to 7 is used, comprising the following steps: S1, inserting the injection blow head (6) into the upper part of the blow molding tank (22), and storing the injection molding slurry in the storage box (9); S2, injecting a certain amount of raw material into the injection blow head (6) through the material delivery pipe (7) and the material delivery pump (8), and then performing blow molding through the blowing pump (10) and the blowing pipe (11); S3, after the single blow molding groove (22) is processed, the blow molding groove (22) is continuously moved downward; S4. The mold base is rotatably arranged on one side of the stand (2) through a first connecting arm (13) and a connecting shaft (14). One end of the connecting shaft (14) is connected to a motor (16) through a gear set (15). The motor (16) drives the connecting shaft (14) to rotate and adjust. When the mold base rotates, an air cooling mechanism is used to facilitate air cooling of the mold base.

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