Hollow blow molding machine mold core structure

Abstract

The utility model discloses a hollow blow molding machine mold core structure, which comprises a mold head support seat, a glue inlet cylinder, a mold core body, a material injection component and a material storage cylinder, the glue inlet cylinder is tightly connected with the lower end of the mold head support seat, the mold core body is arranged at the center of the mold head support seat and the glue inlet cylinder in a penetrating manner, and a feeding gap is formed between the glue inlet cylinder and the mold core body. A feeding hole is formed in the side end of the glue feeding barrel and communicates with the feeding gap, the injection assembly is arranged at the lower end of the glue feeding barrel in a sleeved mode, the upper end of the injection assembly is arranged in the die head supporting base in a penetrating mode, the injection assembly is sleeved with the storage cylinder, the upper end of the storage cylinder is tightly connected with the glue feeding barrel, and an exhaust hole is formed in the side end of the storage cylinder; and the exhaust hole is communicated with the feeding gap. The mold core structure of the hollow blow molding machine is simple in structure, waste plastic residues on the inner wall of the mold core can be effectively reduced, the problems of more residues on the inner wall of the mold core, difficulty in cleaning, long shutdown time and the like during color changing of a product are solved, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of hollow blow molding machine technology, and specifically to a hollow blow molding machine mold core structure. Background Technology

[0002] In blow molding production, switching between different product colors is a common and time-consuming operation. The mold core structure of existing blow molding machines is relatively complex, making cleaning difficult and requiring frequent machine shutdowns, which seriously affects production efficiency. In addition, there are dead corners in the mold core flow channel, making cleaning incomplete, and residues easily adhere to the material surface. When changing product colors, old colored plastic is easily present on the inner wall of the mold core, resulting in insufficient purity of the new color and affecting product quality.

[0003] Therefore, there is a need to provide a hollow blow molding machine mold core structure to solve the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a hollow blow molding machine mold core structure. The structure is simple and can effectively reduce the residue of old plastic on the inner wall of the mold core. It solves the problems of excessive residue on the inner wall of the mold core, difficult cleaning, and long downtime when changing product colors, thereby improving production efficiency and product quality.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A hollow blow molding machine mold core structure includes a mold head support, a glue inlet cylinder, a mold core body, an injection assembly, and a storage cylinder. The glue inlet cylinder is connected to the lower end of the mold head support. The mold core body passes through the center of the mold head support and the glue inlet cylinder, and there is a feeding gap between the glue inlet cylinder and the mold core body. A feeding hole is provided on the side end of the glue inlet cylinder, and the feeding hole communicates with the feeding gap. The injection assembly is sleeved on the lower end of the glue inlet cylinder, and the upper end of the injection assembly passes through the mold head support. The storage cylinder is sleeved on the outside of the injection assembly, and the upper end of the storage cylinder is connected to the glue inlet cylinder. An exhaust hole is provided on the side end of the storage cylinder, and the exhaust hole communicates with the feeding gap.

[0007] As a further improvement to the above technical solution, the glue injection cylinder includes a glue injection block and a guide sleeve. The guide sleeve passes through the glue injection block, and the upper end of the guide sleeve protrudes from the upper end of the glue injection block. The upper end of the mold core passes through the guide sleeve, and the feed hole is located at the side end of the glue injection block and the guide sleeve.

[0008] As a further improvement to the above technical solution, the mold core body includes a mold core and a mold core connector. The upper end of the mold core is connected to the mold head support seat, and the lower end of the mold core is detachably connected to the mold core connector.

[0009] As a further improvement to the above technical solution, the outer wall of the mold core is provided with an inwardly recessed flow channel, and the flow channel is arranged in a 180° symmetrical heart-shaped envelope flow channel.

[0010] As a further improvement to the above technical solution, the flow channel is configured as a straight line or an arc-shaped structure.

[0011] As a further improvement to the above technical solution, a positioning through hole is provided at the center of the mold head support, and the upper end of the mold core is fixedly connected in the positioning through hole.

[0012] As a further improvement to the above technical solution, the lower end of the positioning through hole is recessed with a first step, the upper end of the guide sleeve is disposed within the first step, a plurality of first connecting holes are disposed on the circumferential position of the positioning hole, a plurality of second connecting holes are disposed on the glue inlet block, and a first connecting screw is connected to the first connecting hole and the second connecting hole.

[0013] As a further improvement to the above technical solution, the lower end of the glue inlet block is provided with a second step, the upper end of the storage cylinder is provided on the second step, the glue inlet block is provided with a plurality of third connecting holes, the upper end of the storage cylinder is provided with a plurality of fourth connecting holes, and the third connecting holes and the fourth connecting holes are connected with second connecting screws.

[0014] As a further improvement to the above technical solution, the injection assembly includes an injection piston and multiple injection pressure rods. The injection piston is sleeved outside the guide sleeve, and the multiple injection pressure rods are evenly connected to the upper end of the injection piston. The die head support and the injection block are both provided with guide holes, and the injection pressure rods pass through the guide holes.

[0015] As a further improvement to the above technical solution, an outlet pipe is provided inside the exhaust hole, the outlet pipe is connected to the feed gap, and a valve is installed on the outlet pipe.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides vent holes on the side wall of the storage cylinder, allowing gas or liquid to be introduced during color changing to powerfully flush away residual adhesive in the dead corners of the mold core structure, effectively shortening color changing time and improving production efficiency. At the same time, the mold core body is equipped with arc-shaped or straight flow channels without dead corners to ensure smooth flow of molten adhesive and thorough cleaning of residues, thus guaranteeing product quality. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the hollow blow molding machine mold core structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the hollow blow molding machine mold core structure of this utility model;

[0021] Figure 3 This is an exploded structural diagram of the hollow blow molding machine mold core structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the mold head support base of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the glue inlet cylinder of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the mold core of this utility model;

[0025] Figure 7 This is a schematic diagram of the structure of the storage cylinder of this utility model.

[0026] Reference numerals: 1. Die head support; 11. Positioning through hole; 12. First step; 13. First connecting hole; 14. Guide hole; 2. Inlet cylinder; 21. Inlet block; 211. Second connecting hole; 212. Second step; 213. Third connecting hole; 22. Guide sleeve; 3. Die core body; 31. Die core; 311. Runner; 32. Die core connector; 4. Injection assembly; 41. Injection piston; 42. Injection pressure rod; 5. Storage cylinder; 51. Fourth connecting hole; 6. Inlet gap; 7. Inlet hole; 8. Vent hole; 9. Outlet pipe. Detailed Implementation

[0027] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0028] Reference Figure 1 , Figure 2 A hollow blow molding machine mold core structure includes a mold head support 1, a glue inlet cylinder 2, a mold core body 3, an injection assembly 4, and a storage cylinder 5. The mold head support 1 serves as the supporting component for the entire mold core structure, securely mounted on the machine frame, providing a foundation for the installation and positioning of other components. The glue inlet cylinder 2 is tightly connected to the lower end of the mold head support 1. The mold core body 3 passes through the center of the mold head support 1 and the glue inlet cylinder 2, with a feeding gap 6 between the glue inlet cylinder 2 and the mold core body 3. A feeding port is provided on the side end of the glue inlet cylinder 2. The feed hole 7 is connected to the feed gap 6, and a side-feed method is adopted, so that the molten glue enters the feed gap 6 through the feed hole 7, and then is divided and shaped by the mold core 3. At the same time, the injection assembly 4 is sleeved on the lower end of the glue injection cylinder 2, and the upper end of the injection assembly 4 passes through the mold head support 1. The storage cylinder 5 is sleeved on the outside of the injection assembly 4, and the upper end of the storage cylinder 5 is connected to the glue injection cylinder 2. As the molten glue in the storage cylinder 5 continues to accumulate, the injection assembly 4 gradually moves upward due to the reaction force. When the preset storage value is reached, the hydraulic cylinder can precisely drive the injection component 4 to move downwards rapidly, thereby extruding the molten adhesive in the storage cylinder 5 at high speed to ensure that the molten adhesive does not stagnate inside the die head. The storage cylinder 5 is provided with an exhaust hole 8 on its side, which is connected to the feeding gap 6. During the color change process, gas or liquid can be introduced through the exhaust hole 8 to powerfully flush the adhesive residue in the dead corner of the die core 3, effectively shortening the color change time and improving production efficiency.

[0029] Reference Figure 4 In an embodiment of this utility model, the injection cylinder 2 includes an injection block 21 and a guide sleeve 22. The injection block 21 is used for injecting molten glue on one hand and for connecting the die head support 1 and other related components on the other hand, providing a stable structure. The guide sleeve 22 passes through the injection block 21, and the upper end of the guide sleeve 22 protrudes from the upper end of the injection block 21, ensuring that the injection cylinder 2 can be tightly connected to the die head support 1 and preventing molten glue from overflowing. The upper end of the die core 3 passes through the guide sleeve 22, forming a feeding gap 6. The feeding hole 7 is provided at the side end of the injection block 21 and the guide sleeve 22, ensuring that the molten glue can smoothly enter the die core through the feeding gap 6.

[0030] Reference Figure 2 , Figure 3 , Figure 6In this embodiment of the invention, the mold core 3 includes a mold core 31 and a mold core connector 32. The upper end of the mold core 31 is connected to the mold head support 1 to ensure stability during operation. The lower end of the mold core 31 is detachably connected to the mold core connector 32, allowing for easy replacement of mold cores of different shapes and sizes to meet the production needs of different products and facilitating quick replacement and maintenance of the mold core 31. Furthermore, the mold core 3 can be coated with a low-friction, wear-resistant coating, such as a fluoride coating or a ceramic coating, to form a smooth surface and reduce plastic residue adhesion.

[0031] Specifically, the outer wall of the mold core 31 is recessed with a flow channel 311. The flow channel 311 is configured as a 180° symmetrical heart-shaped envelope flow channel, so that part of the molten glue flows downward along the 180° symmetrical heart-shaped envelope flow channel in the concave layer of the mold core 31 in a spiral trajectory, while the other part of the molten glue flows vertically downward close to the outer mold core wall and slowly merges into the storage cylinder 5. This ensures that the molten glue flows downward uniformly in all directions of 360 degrees, achieving full and efficient fusion, thereby obtaining a high-quality hollow blow molded product.

[0032] Specifically, the flow channel 311 is designed as a straight line or an arc shape with no dead angles. Combined with the vent hole 8 and the outlet pipe 9, it ensures that the interior of the mold core structure can be cleaned in all directions without dead angles, ensuring that residual material is discharged smoothly and thoroughly, thus improving the purity of the new color.

[0033] Reference Figure 3 , Figure 4 , Figure 5 , Figure 7 In an embodiment of this utility model, a positioning through hole 11 is provided at the center of the mold head support 1, and the upper end of the mold core 31 is fixedly connected in the positioning through hole 11 to accurately position the mold core 3, so that the mold core 3 can be stably installed on the mold head support 1, ensuring that the mold core will not shift or loosen during operation.

[0034] Specifically, the lower end of the positioning through hole 11 is recessed with a first step 12, and the upper end of the guide sleeve 22 is disposed in the first step 12, so that the glue injection cylinder 2 is tightly connected to the mold head support 1. The positioning through hole 11 is provided with a plurality of first connecting holes 13 in the circumferential position, and the glue injection block 21 is provided with a plurality of second connecting holes 211. The first connecting holes 13 and the second connecting holes 211 are connected with first connecting screws, so that the mold head support 1 and the glue injection block 21 are firmly connected together.

[0035] Specifically, the lower end of the glue injection block 21 is provided with a second step 212, and the upper end of the storage cylinder 5 is set on the second step 212, so that the glue injection cylinder 2 and the storage cylinder 5 are tightly connected. The glue injection block 21 is provided with a plurality of third connecting holes 213, and the upper end of the storage cylinder 5 is provided with a plurality of fourth connecting holes 51. The third connecting holes 213 and the fourth connecting holes 51 are connected with second connecting screws, which firmly connect the glue injection block 21 and the storage cylinder 5 together, ensuring the precise positioning and stable connection between the mold head support 1, the glue injection block 21 and the storage cylinder 5, thereby improving the stability and production efficiency of the equipment. At the same time, this tight connection avoids glue leakage problems.

[0036] Reference Figure 2 , Figure 3 In this embodiment of the present invention, the injection assembly 4 is mainly used to push molten adhesive into the storage cylinder 5. It includes an injection piston 41 and multiple injection pressure rods 42. The injection piston 41 is sleeved on the outside of the guide sleeve 22. The multiple injection pressure rods 42 are evenly connected to the upper end of the injection piston 41. The injection pressure rods 42 can be driven by a hydraulic or pneumatic power source to provide additional pushing force, ensuring that the molten adhesive receives a stable and uniform force during the pushing process, thereby avoiding uneven distribution or blockage of the molten adhesive in the mold core. The mold head support seat 1 and the glue injection block 21 are both provided with guide holes 14. The injection pressure rods 42 pass through the guide holes 14 to guide the movement of the injection pressure rods 42 and ensure the stability and accuracy of the injection assembly 4 during operation, reducing production problems caused by deviation or shaking, and improving the production efficiency and product quality of the blow molding machine.

[0037] Reference Figure 1 In this embodiment of the invention, an outlet pipe 9 is provided inside the vent 8. The outlet pipe 9 is welded to the guide sleeve 22 and communicates with the feed gap 6. During the color change process, gas or liquid (such as cleaning fluid) is introduced to powerfully flush the residual adhesive in the dead corners inside the mold core structure, thereby improving cleaning efficiency. Furthermore, a valve is installed on the outlet pipe 9 to control the inflow of the flushing medium (gas or liquid), ensuring that the inside of the mold core structure is accurately cleaned when needed. This allows the color change and cleaning work to be completed without stopping the machine or with minimal downtime, thereby significantly improving production efficiency.

[0038] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A hollow blow molding machine mold core structure, characterized in that: The device includes a die head support, a glue inlet cylinder, a die core, an injection assembly, and a storage cylinder. The glue inlet cylinder is connected to the lower end of the die head support. The die core passes through the center of the die head support and the glue inlet cylinder, and there is a feeding gap between the glue inlet cylinder and the die core. A feeding hole is provided on the side end of the glue inlet cylinder, and the feeding hole communicates with the feeding gap. The injection assembly is sleeved on the lower end of the glue inlet cylinder, and the upper end of the injection assembly passes through the die head support. The storage cylinder is sleeved on the outside of the injection assembly, and the upper end of the storage cylinder is connected to the glue inlet cylinder. A vent is provided on the side end of the storage cylinder, and the vent communicates with the feeding gap.

2. The hollow blow molding machine mold core structure according to claim 1, characterized in that: The injection cylinder includes an injection block and a guide sleeve. The guide sleeve passes through the injection block, and the upper end of the guide sleeve protrudes from the upper end of the injection block. The upper end of the mold core passes through the guide sleeve, and the feed hole is located at the side end of the injection block and the guide sleeve.

3. The hollow blow molding machine mold core structure according to claim 2, characterized in that: The mold core body includes a mold core and a mold core connector. The upper end of the mold core is connected to the mold head support, and the lower end of the mold core is detachably connected to the mold core connector.

4. The hollow blow molding machine mold core structure according to claim 3, characterized in that: The outer wall of the mold core is recessed inward and has a flow channel, which is arranged in a 180° symmetrical heart-shaped envelope.

5. The hollow blow molding machine mold core structure according to claim 4, characterized in that: The flow channel is configured as a straight line or an arc shape.

6. The hollow blow molding machine mold core structure according to claim 3, characterized in that: The center of the mold head support is provided with a positioning through hole, and the upper end of the mold core is fixedly connected in the positioning through hole.

7. The hollow blow molding machine mold core structure according to claim 6, characterized in that: The lower end of the positioning through hole is recessed with a first step, the upper end of the guide sleeve is located within the first step, a plurality of first connecting holes are provided on the circumferential position of the positioning through hole, a plurality of second connecting holes are provided on the glue inlet block, and a first connecting screw is connected to the first connecting hole and the second connecting hole.

8. The hollow blow molding machine mold core structure according to claim 2, characterized in that: The lower end of the glue inlet block is provided with a second step, the upper end of the storage cylinder is provided on the second step, the glue inlet block is provided with a plurality of third connecting holes, the upper end of the storage cylinder is provided with a plurality of fourth connecting holes, and the third connecting holes and the fourth connecting holes are connected with second connecting screws.

9. The hollow blow molding machine mold core structure according to claim 2, characterized in that: The injection assembly includes an injection piston and multiple injection pressure rods. The injection piston is sleeved outside the guide sleeve, and the multiple injection pressure rods are evenly connected to the upper end of the injection piston. The die head support and the injection block are provided with guide holes, and the injection pressure rods pass through the guide holes.

10. A hollow blow molding machine mold core structure according to claim 1, characterized in that: An outlet pipe is provided inside the exhaust port, the outlet pipe is connected to the feed gap, and a valve is installed on the outlet pipe.

Images