Blow molding die head of blow molding machine

Abstract

The utility model discloses a blow molding die head of a blow molding machine, which relates to the relevant technical field of blow molding machines, and comprises a die head body, a cavity and a material spraying port, one side of the die head body is provided with an insertion hole, a push rod is inserted into the insertion hole, one end of the push rod is fixedly connected with a container bottle, and the container bottle is provided with a feed port and a discharge port. The other end of the push rod penetrates through the insertion hole and is fixedly connected with a sliding block, the sliding block is in threaded connection with a driving mechanism, the driving mechanism is installed on one side outside the die head body, and the upper portion of the inner side of the die head body is fixedly connected with a liquid guide pipe; and the liquid guide pipe is communicated with the interior of the die head body. According to the utility model, the container bottle and the baffle plate which only enters but does not exit are arranged, and the container bottle is driven to displace and discharge, so that the circulation amount is accurately controlled, and the problems of product defects, rejection rate and cost increase which are easily caused by inaccurate feeding amount of plastic liquid are solved.

Description

Technical Field

[0001] The utility model relates to the technical field related to blow molding machines, in particular to a blow molding die head of a blow molding machine. Background Art

[0002] As an important component of a blow molding machine, the blow molding die head's primary function is to convert the molten plastic from the extruder's spiral motion into linear motion, further grading it to generate the necessary molding pressure, allowing the plastic melt to be formed into the desired shape and size in the mold. During this process, the design and manufacturing precision of the blow molding die head directly impacts the product's molding quality and production efficiency.

[0003] Modern blow molding machines usually use advanced control systems and sophisticated processing technology to manufacture blow molding heads to improve their accuracy, durability and adaptability. At the same time, the application of some new materials also makes the blow molding heads show more excellent performance in terms of high temperature and high pressure resistance, corrosion resistance, etc.

[0004] At present, the existing blow molding machine die head controls the flow rate of plastic liquid by operating the screw to control the opening and closing of the adjustment plate. During the opening and closing process, the pressure of the plastic liquid flow will affect the opening and closing speed of the adjustment plate, and there will still be residual plastic liquid leaking before the adjustment plate is completely closed. This flow rate control is not precise enough, and inaccurate plastic liquid delivery can easily lead to product defects and scrap rate, increasing costs. Therefore, a new blow molding die head for a blow molding machine is proposed. Utility Model Content

[0005] The main purpose of the utility model is to provide a blow molding die head for a blow molding machine. By setting a container bottle structure, a baffle that only allows entry but not exit is set on the die head body of the liquid guide pipe port, and driving the container bottle to move and automatically unload, the problem of accurate control of the circulation volume can be effectively solved, avoiding affecting product quality, wasting plastic liquid, and increasing costs.

[0006] To achieve the above-mentioned purpose, the present invention provides a blow molding die head for a blow molding machine, comprising a die head body, a cavity and a spray port, a socket provided on one side of the die head body, a push rod connected to the socket, one end of the push rod fixedly connected to a container bottle, the container bottle provided with a feed port and a discharge port, a sealing cover hinged at the bottom end of the container bottle for sealing the bottom end, the sealing cover abutting against a first fixed plate, the other end of the push rod passing through the socket fixedly connected to a slider, the slider being threadedly connected to a driving mechanism, the driving mechanism being mounted on the outer side of the die head body, a liquid guide tube fixedly connected to the upper inner side of the die head body, the liquid guide tube being connected to the interior of the die head body. By adopting the above-mentioned technical solution, through the design of the container bottle entering from above and exiting from below, the moving speed and dwell time are set in advance in the driving structure, the displacement of the container bottle is controlled to push open the baffle and receive the plastic liquid, making the material supply and injection process more controllable and improving the flexibility of operation.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the drive mechanism includes a screw, a second fixed plate, a first limit block, a second limit block, and a motor. The second fixed plate is fixedly connected to the outer side of the die body, the first limit block and the second limit block are fixedly connected to the second fixed plate, the screw passes through the slider, the first limit block and the second limit block and are coaxially connected, the screw is threadedly connected to the slider, the screw is rotatably connected to the first limit block and the second limit block, and the first limit block is fixedly connected to the motor on the side away from the screw. By adopting the above technical solution, the motor drives the screw to rotate, which drives the slider to slide along the second fixed plate. This allows the container bottle to flexibly adjust the residence time during feeding according to production needs, thereby controlling the supply of plastic material during the blow molding process and improving product quality and consistency.

[0009] Furthermore, the liquid guiding tube is provided with a baffle at one end close to the cavity. By adopting the above technical solution, the setting of the baffle that only allows the plastic liquid to enter but not exit can prevent the plastic liquid from flowing out of the liquid guiding tube.

[0010] Furthermore, a horizontal plate is fixedly connected to the die body on the side near the liquid guide tube, and the horizontal plate is located below the liquid guide tube. By adopting the above technical solution, the horizontal plate prevents excess plastic liquid from dripping onto the push rod. When the feed port of the container bottle is moved and inserted into the nozzle of the liquid guide tube, the plastic liquid left on the horizontal plate can be pushed back into the liquid guide tube.

[0011] Furthermore, the sealing cover is provided with a first sealing ring, and the bottom end of the container bottle is provided with a second sealing ring. By adopting the above technical solution, the provision of the sealing ring can improve the sealing effect and prevent the plastic liquid from leaking.

[0012] The beneficial effects of the utility model are as follows: the utility model provides a blow molding die head for a blow molding machine, which has the following advantages:

[0013] 1. The utility model can accurately control the amount of material entering the die cavity by setting up a container bottle structure. The feed port on the container bottle is plugged into the liquid guide tube, ensuring that the material can enter the die cavity accurately and quantitatively. The motor drives the screw to rotate, driving the slider to slide along the second fixed plate, so that the push rod drives the container bottle to move, realizing the quantitative reception of plastic liquid by the container bottle, thereby improving product quality and reducing the scrap rate.

[0014] 2. The utility model sets a baffle that only allows for entry but not exit. The feed port of the container bottle is connected to the guide tube, and the baffle is pushed open to receive the plastic liquid. After the reception is completed, the feed port of the container bottle leaves the guide tube, and the baffle automatically returns to the closed state to prevent the plastic liquid from flowing back, ensuring the accuracy of the amount of plastic entering the die head. Precise measurement and control make the wall thickness, size and other parameters of the blow-molded products more consistent, thereby achieving the demand for improving the overall quality of the product.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of the blow molding die head of a blow molding machine.

[0018] Figure 2 The utility model is a schematic diagram of the overall structure of the feeding device in the blow molding die head of the blow molding machine.

[0019] Figure 3 This is a structural schematic diagram of a container bottle and a sealing cover in a blow molding die head of a blow molding machine proposed in the utility model.

[0020] In the figure: 1. Die body; 2. First fixed plate; 3. Discharge port; 4. Sealing cover; 5. Container bottle; 6. Second fixed plate; 7. First limit block; 8. Motor; 9. Screw; 10. Slider; 11. Push rod; 12. Liquid guide tube; 13. Baffle; 14. Spray port; 15. Horizontal plate; 16. Feed port; 17. Cavity; 18. Second limit block; 19. Jack; 20. First sealing ring; 21. Second sealing ring. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-3 The principles and features of the present invention are described, and the examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Example 1

[0025] like Figure 1As shown, the utility model provides a blow molding die head of a blow molding machine, including a die head body 1, a cavity 17 and a spray port 14. A socket 19 is provided on one side of the die head body 1, and a push rod 11 is inserted into the socket 19. One end of the push rod 11 is fixedly connected to a container bottle 5. The container bottle 5 is provided with a feed port 16 and a discharge port 3. The bottom end of the container bottle 5 is hinged with a sealing cover 4 for sealing the bottom end. The sealing cover 4 is in contact with a first fixed plate 2. When the sealing cover 4 is away from the first fixed plate 2, the sealing cover 4 is opened, and the plastic liquid is poured into the cavity 17. The other end of the push rod 11 passes through the socket 19 and is fixedly connected to a slider 10. The slider 10 A driving mechanism is threadedly connected and installed on the outer side of the die body 1. A liquid guide tube 12 is fixedly connected to the upper inner side of the die body 1. The liquid guide tube 12 is communicated with the inside of the die body 1. A baffle 13 is provided at one end of the liquid guide tube 12 close to the cavity 17. The setting of the baffle 13 that only allows entry but not exit can prevent the plastic liquid from flowing back from the liquid guide tube 12. Through the design of the container bottle 5 entering from the top and exiting from the bottom, the moving speed and residence time are set in advance when the driving structure is in operation, and the displacement of the container bottle 5 is controlled to push open the baffle 13 to receive the plastic liquid, making the injection of the plastic liquid more controllable and improving the flexibility of operation.

[0026] Example 2

[0027] like Figure 2-3 As shown, based on the first embodiment, the following improvements are made:

[0028] In this embodiment, the driving mechanism includes a screw 9, a second fixed plate 6, a first limit block 7, a second limit block 18 and a motor 8. The second fixed plate 6 is fixedly connected to the outer side of the die body 1, and the first limit block 7 and the second limit block 18 are fixedly connected to the second fixed plate 6. The screw 9 passes through the slider 10, the first limit block 7 and the second limit block 18 are coaxially connected, the screw 9 is threadedly connected to the slider 10, the screw 9 is rotatably connected to the first limit block 7 and the second limit block 18, and the first limit block 7 is fixedly connected to the motor 8 away from the screw 9. A first sealing ring 20 is provided on the sealing cover 4, and a second sealing ring 21 is provided at the bottom end of the container bottle 5. The die body 1 is close to the liquid guide tube 12. The side is fixedly connected with a horizontal plate 15, and the horizontal plate 15 is below the liquid guide tube 12. The setting of the horizontal plate 15 prevents excess plastic liquid from dripping onto the push rod 11, thereby affecting the driving operation. When the feed port 16 of the container bottle 5 is moved and plugged into the tube mouth of the liquid guide tube 12, the plastic liquid left on the horizontal plate 15 can be pushed back into the liquid guide tube 12. The motor 8 drives the screw rod 9 to rotate, driving the slider 10 to slide along the second fixed plate 2. The first limit block 7 and the second limit block 18 limit the moving range of the slider 10. According to production requirements, the residence time of the container bottle 5 during feeding can be flexibly adjusted, thereby controlling the supply amount of plastic material during the blow molding process, and improving the quality and consistency of the product.

[0029] Here's how it works:

[0030] The operator sets up the driving mechanism in advance, injects plastic liquid into the liquid guide tube 12, starts the motor 8, and the motor 8 drives the screw rod 9 to rotate, thereby driving the slider 10 to slide along the second fixed plate, and the push rod 11 pushes the container bottle 5 toward the direction of the motor 8. When the slider 10 hits the first limit block 7, the displacement receiving position is reached, and the discharge port 16 of the container bottle 5 pushes open the baffle 13 with the displacement and plugs into the mouth of the liquid guide tube 12. The container bottle 5 receives a certain amount of plastic liquid. The motor 8 drives in reverse to cause the push rod 11 to drive the container bottle 5 to move toward the center of the cavity 17. As the sealing cover 4 moves away from the first fixed plate 2, the sealing cover 4 opens, and the plastic liquid falls from the container bottle 5 into the cavity 17 and reaches the spray port 14. The baffle 13 and the cross plate 15 that can only enter but not exit are set to prevent the plastic liquid from flowing out of the liquid guide tube and dripping onto the push rod 11, affecting the operation of the driving mechanism.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A blow molding die head for a blow molding machine, comprising a die head body (1), a cavity (17) and a spray port (14), characterized in that: A socket (19) is provided on one side of the die body (1), a push rod (11) is inserted into the socket (19), one end of the push rod (11) is fixedly connected to a container bottle (5), the container bottle (5) is provided with a feed port (16) and a discharge port (3), a sealing cover (4) for sealing the bottom end is hingedly connected to the bottom end of the container bottle (5), the sealing cover (4) is in contact with a first fixed plate (2), the other end of the push rod (11) passes through the socket (19) and is fixedly connected to a slider (10), the slider (10) is threadedly connected to a driving mechanism, the driving mechanism is installed on the outer side of the die body (1), a liquid guide tube (12) is fixedly connected to the upper inner side of the die body (1), and the liquid guide tube (12) is communicated with the interior of the die body (1).

2. A blow molding die head for a blow molding machine according to claim 1, characterized in that: The driving mechanism comprises a screw (9), a second fixed plate (6), a first limit block (7), a second limit block (18) and a motor (8); the second fixed plate (6) is fixedly connected to the outer side of the die head body (1); the first limit block (7) and the second limit block (18) are fixedly connected to the second fixed plate (6); the screw (9) passes through the slider (10), the first limit block (7) and the second limit block (18) and are coaxially connected; the screw (9) is threadedly connected to the slider (10); the screw (9) is rotatably connected to the first limit block (7) and the second limit block (18); and the first limit block (7) is fixedly connected to the motor (8) on the side away from the screw (9).

3. The blow molding die head of a blow molding machine according to claim 1, characterized in that: A baffle (13) is provided at one end of the liquid guiding tube (12) close to the cavity (17).

4. The blow molding die head of a blow molding machine according to claim 1, characterized in that: A transverse plate (15) is fixedly connected to one side of the die body (1) close to the liquid guiding tube (12), and the transverse plate (15) is below the liquid guiding tube (12).

5. The blow molding die head of a blow molding machine according to claim 1, characterized in that: The sealing cover (4) is provided with a first sealing ring (20), and the bottom end of the container bottle (5) is provided with a second sealing ring (21).

Images