A bottle blowing apparatus

Abstract

The utility model relates to the field of plastic processing especially a kind of bottle blowing device.The bottle blowing device includes injection device and blow molding structure;Blow molding structure includes base, the guide pillar is slidably installed on the base, the top of the guide pillar is fixed with upper mounting plate, the bottom of the upper mounting plate is equipped with blow needle, the guide pillar is slidably installed with lifting plate, the bottom of the lifting plate is equipped with upper die, and the upper die is used to clamp bottle blank;The top of the base is equipped with blank mould;The side of the blank mould is equipped with the feed inlet being communicated with the cavity, and the injection device includes screw rod, and the screw rod can be moved to be communicated with feed inlet;When lifting plate moves downward, injection device injects blank mould, and blow needle inserts blank mould and blows, to form hollow bottle blank.The utility model provides a kind of bottle blowing device with the advantage that it can keep pressure and supplement raw materials when blowing bottles, thereby improving the yield.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing, and in particular to a blow molding device. Background Technology

[0002] Existing multi-station blow molding equipment cannot simultaneously inject and replenish material while blowing air, resulting in a low yield rate.

[0003] For example, patent document CN220349027U discloses a one-step four-station injection stretch blow molding structure, including a processing table, a rotating disk located above the top of the processing table, and a fixed platform located above the top of the rotating disk. The processing table includes fixed rods located at the four corners of the top of the processing table, and a support platform is provided on the top of the fixed rods; and empty slots are provided at both ends and sides inside the support platform, and support rods penetrating into the support platform are provided at the four corners of the bottom of the fixed platform. A support groove is provided on the outer side of the bottom of the rotating disk. This utility model uses an injection stage to dissolve and inject raw materials into the material tank in the support platform, and uses a hydraulic cylinder to drive the extrusion block to adjust up and down, thereby extruding and molding the raw materials.

[0004] To address these technical problems, a blow molding device is proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a blow molding device that can replenish raw materials during blow molding, thereby improving the yield rate.

[0006] The technical solution adopted by this utility model to solve the problem is: a blow molding device, including: an injection device and a blow molding structure; the blow molding structure includes a base, a guide post slidably mounted on the base, an upper mounting plate fixed to the top of the guide post, a blow needle provided at the bottom of the upper mounting plate, a lifting plate slidably mounted on the guide post, an upper mold provided at the bottom of the lifting plate, the upper mold being used to clamp the preform; a preform mold is provided at the top of the base; a feed port communicating with the mold cavity is provided on the side of the preform mold; the injection device includes a screw, the screw being movable to communicate with the feed port; when the lifting plate moves downward, the injection device injects material into the preform mold, and the blow needle inserts into the preform mold to blow air, thereby forming a hollow preform.

[0007] As a further improvement to the above technical solution, the base is provided with a forming mold, the bottom of the lifting plate is provided with a turntable, the upper mold is provided on the turntable, the turntable can rotate in the horizontal plane, so that the upper mold rotates from above the blank mold to above the forming mold; the upper mounting plate is provided above both the blank mold and the forming mold.

[0008] As a further improvement to the above technical solution, a lower mounting plate is fixed to the bottom of the guide post, and a mold-locking structure is provided on the lower mounting plate; the mold-locking structure includes a high-speed mold-closing mechanism, and a drive plate is provided at the output end of the high-speed mold-closing mechanism. The drive plate is located below the base, and the high-speed mold-closing mechanism can drive the drive plate to rise after outputting power to push the base to move upward.

[0009] As a further improvement to the above technical solution, a low-speed mold closing mechanism is installed on the drive plate. The output end of the low-speed mold closing mechanism is located below the base and is used to push the base upward. The lower mounting plate is provided with clearance holes that match the low-speed mold closing mechanism.

[0010] As a further improvement to the above technical solution, the high-speed mold closing mechanism is a linear motor.

[0011] As a further improvement to the above technical solution, the low-speed mold closing mechanism is a pneumatic cylinder or a hydraulic cylinder.

[0012] The beneficial effects of this invention are: by blowing air at the top of the blow-molded structure and injecting material from the side, material replenishment can be carried out during blow molding, thereby improving the yield rate. Attached Figure Description

[0013] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the preferred embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the blow molding structure in this utility model.

[0016] In the diagram: 1. Injection device; 11. Screw; 2. Blow molding structure; 21. Base; 22. Guide post; 23. Upper mounting plate; 24. Blow needle; 25. Lifting plate; 26. Upper mold; 27. Preform; 28. Lower mounting plate; 29. ​​Turntable; 3. Preform mold; 31. Inlet; 4. Molding mold; 5. Low-speed mold closing mechanism; 6. High-speed mold closing mechanism; 61. Drive plate. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] Reference Figures 1 to 2 A blow molding device includes: an injection device 1 and a blow molding structure 2; the blow molding structure 2 includes a base 21, a guide post 22 slidably mounted on the base 21, an upper mounting plate 23 fixed to the top of the guide post 22, a blow needle 24 provided at the bottom of the upper mounting plate 23, a lifting plate 25 slidably mounted on the guide post 22, an upper mold 26 provided at the bottom of the lifting plate 25, the upper mold 26 being used to clamp a preform 27; a preform mold 3 is provided at the top of the base 21; the preform mold 3 includes a mold cavity, and a feed port 31 communicating with the mold cavity is provided on the side of the preform mold 3; the injection device 1 includes a screw 11, the screw 11 being movable to communicate with the feed port 31. In use, the guide post 22 and the lifting plate 25 move down to close the mold. When the lifting plate 25 moves down, the upper mold 26 closes with the blank mold 3. Material is injected into the blank mold 3 through the injection device 1. The blow needle 24 is inserted into the blank mold 3 to blow air to form a hollow bottle preform 27. During blow molding, the injection device 1 still has a certain pressure, which can replenish material to the blank mold 3 to increase the wall thickness of the bottle preform 27.

[0022] The base 21 is equipped with a molding mold 4, and the bottom of the lifting plate 25 is equipped with a turntable 29. The turntable 29 can rotate in the horizontal plane. The upper mold 26 is set on the turntable 29, so that the upper mold 26 can rotate from above the blank mold 3 to above the molding mold 4. The blank mold 3 and the molding mold 4 are both equipped with an upper mounting plate 23. When the raw material is formed into a bottle preform 27 in the blank mold 3, it is attached to the upper mold 26. The turntable is used to move it to above the molding mold 4. The lifting plate 25 moves downward. After the molding mold 4 closes, the blow needle 24 blows air a second time to inflate the bottle preform 27.

[0023] Furthermore, to ensure stable mold closing, a lower mounting plate 28 is fixed to the bottom of the guide post 22, and a mold-locking structure is provided on the lower mounting plate 28. The mold-locking structure includes a high-speed mold-closing mechanism 6, and a drive plate 61 is provided at the output end of the high-speed mold-closing mechanism 6. The drive plate 61 is located below the base 21. After the high-speed mold-closing mechanism 6 outputs power, it can drive the drive plate 61 to rise and push the base 21 upward. A low-speed mold-closing mechanism 5 is installed on the drive plate 61. The output end of the low-speed mold-closing mechanism 5 is located below the base 21 and is used to push the base 21 upward. The lower mounting plate 28 is provided with clearance holes that match the low-speed mold-closing mechanism 5. When the mold is closed, the bottom end of the low-speed mold closing mechanism 5 is located above the clearance hole, allowing the high-speed mold closing mechanism 6 to slide to the clearance hole. Then, the low-speed mold closing mechanism 5 extends downward and abuts against the high-speed mold closing mechanism 6, thereby generating downward pressure on the guide post 22 to ensure mold closing stability. Conversely, when the mold is opened, the low-speed mold closing mechanism 5 and the high-speed mold closing mechanism 6 are retracted in sequence, the guide post 22 moves upward, and the low-speed mold closing mechanism 5 can pass through the clearance hole, thereby realizing mold opening.

[0024] The high-speed mold closing mechanism 6 is a linear motor.

[0025] The low-speed mold closing mechanism 5 is a pneumatic cylinder or a hydraulic cylinder.

[0026] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A blow molding apparatus, characterized in that, include: Injection device (1) and blow molding structure (2); The blow molding structure (2) includes a base (21), on which a guide post (22) is slidably mounted. An upper mounting plate (23) is fixed to the top of the guide post (22), and a blow needle (24) is provided at the bottom of the upper mounting plate (23). A lifting plate (25) is slidably mounted on the guide post (22), and an upper mold (26) is provided at the bottom of the lifting plate (25). The upper mold (26) is used to hold the preform (27). A blank mold (3) is provided at the top of the base (21). The blank mold (3) includes a mold cavity, and the side of the blank mold (3) is provided with a feed port (31) communicating with the mold cavity. The injection device (1) includes a screw (11), and the screw (11) can move to communicate with the feed port (31). When the lifting plate (25) moves downward, the injection device (1) injects material into the blank mold (3), and the blow needle (24) inserts into the blank mold (3) to blow air to form a hollow bottle blank (27).

2. The blow molding apparatus as described in claim 1, characterized in that: The base (21) is provided with a forming mold (4), and the bottom of the lifting plate (25) is provided with a turntable (29). The turntable (29) can rotate in the horizontal plane. The upper mold (26) is provided on the turntable (29), so that the upper mold (26) rotates from above the blank mold (3) to above the forming mold (4). The upper mounting plate (23) is provided above both the blank mold (3) and the forming mold (4).

3. A blow molding apparatus as described in claim 1 or 2, characterized in that: The bottom of the guide post (22) is fixed with a lower mounting plate (28), and the lower mounting plate (28) is provided with a mold-locking structure; The mold clamping structure includes a high-speed mold clamping mechanism (6). The output end of the high-speed mold clamping mechanism (6) is provided with a drive plate (61). The drive plate (61) is located below the base (21). After the high-speed mold clamping mechanism (6) outputs power, it can drive the drive plate (61) to rise and push the base (21) to move upward.

4. The blow molding apparatus as described in claim 3, characterized in that: A low-speed mold closing mechanism (5) is installed on the drive plate (61). The output end of the low-speed mold closing mechanism (5) is located below the base (21) and is used to push the base (21) upward. The lower mounting plate (28) is provided with a clearance hole that matches the low-speed mold closing mechanism (5).

5. A blow molding apparatus as described in claim 4, characterized in that: The high-speed mold closing mechanism (6) is a linear motor.

6. A blow molding apparatus as described in claim 4, characterized in that: The low-speed mold closing mechanism (5) is a pneumatic cylinder or a hydraulic cylinder.

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