Blow molding machine with die head capable of controlling wall thickness of product
By designing the wall thickness adjustment assembly in the blow molding machine die head, and utilizing the relative movement of the tapered and annular elastic parts, the problem of difficult to quickly adjust the product wall thickness in the prior art is solved, and rapid and simple wall thickness adjustment is achieved, and production efficiency is improved.
Patent Information
- Application Number
- CN202420356302.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-02-27
AI Technical Summary
In the blow molding industry, it is difficult for the existing technology to quickly adjust the product wall thickness, resulting in cumbersome operation when producing plastic products with different wall thicknesses.
A die head that can control the wall thickness of the product is designed, using a wall thickness adjustment assembly, including a tapered and annular elastic member. By the mating of the nut and the push plate, the relative movement of the tapered and annular elastic member is achieved, thereby adjusting the wall thickness of the plastic product.
It realizes rapid adjustment of the wall thickness of plastic products, simplifies the production process and improves production efficiency.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of blow molding machines, in particular to a blow molding machine with a die head capable of controlling the wall thickness of a product. Background Art
[0002] In the blow molding industry, blow molding technology is the third largest plastic processing and molding method after injection molding and extrusion molding. It is widely used in food, medical, automotive, industrial transportation and other fields. When hollow plastic pipes need to be produced, blow molding machines are often used.
[0003] When it is necessary to produce plastic products with different wall thicknesses, the blow molding machine is often replaced by a die head, which is a cumbersome operation and difficult to quickly adjust the product wall thickness. Utility Model Content
[0004] In order to solve the problem of difficulty in quickly adjusting the wall thickness of the product proposed in the above background technology, the utility model provides the following technical solutions:
[0005] A blow molding machine with a die head capable of controlling the wall thickness of a product, comprising a blow molding machine die head;
[0006] A feed port for conveying plastic solution to the inside of the blow molding machine die is installed at one end of the blow molding machine die, a vent pipe for blow molding is installed in the middle of the blow molding machine die, and a mandrel is installed inside the blow molding machine die.
[0007] The lower end of the blow molding machine die head is equipped with a wall thickness adjustment component for cooperating with the mandrel to control the wall thickness of the product, and the lower end of the blow molding machine die head is equipped with a cooling box for cooperating with the wall thickness adjustment component to cool the plastic solution.
[0008] The wall thickness adjustment component includes a conical elastic member and an annular elastic member for guiding the plastic solution. The outer wall of the conical elastic member is equipped with a first limiting plate for limiting the conical elastic member, and the lower end of the first limiting plate is installed on the outer wall of the annular elastic member.
[0009] Furthermore, a material passage trough for the circulation of the plastic solution is provided inside the die head of the blow molding machine, and a limiting groove for the movement of the wall thickness adjustment component is provided at the lower end of the die head of the blow molding machine.
[0010] Furthermore, an annular support plate is installed at the lower end of the groove cavity of the limiting groove, and a spring 1 for pushing the annular support plate is installed at the lower end of the annular support plate.
[0011] Furthermore, a second limit plate for limiting the wall thickness adjustment component is installed in the groove cavity of the limit groove, a push plate for pushing the first limit plate is installed at the lower end of the blow molding machine die head, and a spring 2 for controlling the push plate to reset is installed at one end of the push plate.
[0012] Furthermore, a nut for controlling the push plate to extrude the first limit plate is installed at the lower end of the blow molding machine die head, and a conical groove is provided at the lower end of the nut.
[0013] Furthermore, sliders are installed on both sides of the first limiting plate, a through groove for the circulation of coolant is provided inside the first limiting plate, and sliding grooves for the sliding sliders are provided on both sides of the second limiting plate.
[0014] Furthermore, the cooling box includes a box body, an annular limit block is installed on the upper end of the box body, an annular groove 1 and an annular groove 2 are provided inside the annular limit block for circulating the coolant, an inlet pipe 1 for conveying coolant to the inside of the push plate is installed at one end of the annular limit block, and an outlet pipe 1 for conveying coolant to the groove cavity of the annular groove 2 is installed at one end of the push plate.
[0015] Furthermore, a second liquid outlet pipe for conveying coolant to the push plate is installed at the upper end of the first limit plate, and a second liquid inlet pipe for conveying coolant to the groove cavity of the through groove is installed at the lower end of the through groove.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] When the wall thickness of the plastic product needs to be reduced, the nut is rotated to move downward, driving the push plate to push the first limit plate, so that the conical elastic part and the annular elastic part move toward the direction of the central axis. When the wall thickness of the plastic product needs to be increased, the nut is rotated in the opposite direction to move upward, and the spring pair pushes the annular support plate, and the annular support plate pushes the wall thickness adjustment assembly, thereby driving the conical elastic part and the annular elastic part away from the central axis. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the internal structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the wall thickness adjustment component of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the second limiting plate of the utility model;
[0021] Figure 4 For this utility model Figure 1 A magnified image of point A;
[0022] Figure 5 For this utility model Figure 1 Enlarged view of point B.
[0023] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:
[0024] 10-feeding port, 100-blow molding machine die head, 110-feeding trough, 120-venting pipe, 130-spindle, 140-limiting groove, 141-annular support plate, 142-spring 1, 150-second limiting plate, 151-slideway, 160-push plate, 161-spring 2, 170-nut;
[0025] 200 - wall thickness adjustment component, 210 - conical elastic member, 220 - annular elastic member, 230 - first limiting plate, 231 - slider, 232 - through groove;
[0026] 300 - cooling box, 310 - box body, 320 - annular limit block, 321 - annular groove one, 322 - annular groove two, 330 - liquid inlet pipe one, 340 - liquid outlet pipe one, 350 - liquid inlet pipe two, 360 - liquid outlet pipe two. DETAILED DESCRIPTION
[0027] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.
[0028] See also Figure 1-Figure 5 The utility model provides a blow molding machine with a die head capable of controlling the wall thickness of a product.
[0029] One end of the blow molding machine die 100 is fixedly installed with a feed port 10 for conveying plastic solution to the inside of the blow molding machine die 100. A feed trough 110 for the plastic solution to circulate is provided inside the blow molding machine die 100. The plastic solution moves toward the wall thickness adjustment component 200 through the feed trough 110. When passing through the annular elastic member 220, the first limit plate 230 cools the annular elastic member 220, so that the solution in the middle of the annular elastic member 220 is cooled, and the plastic tube body is shaped. Finally, the plastic product is output from the lower end of the groove cavity of the feed trough 110, and then the plastic tube is blow molded by cooperating with the blow molding equipment in the prior art. A vent pipe 120 for blow molding is fixedly installed in the middle of the blow molding machine die 100, and a mandrel 130 is fixedly installed inside the blow molding machine die 100.
[0030] A limiting groove 140 for movement of the wall thickness adjustment component 200 is provided at the lower end of the limit groove 140, and an annular support plate 141 is installed at the lower end of the groove cavity of the limiting groove 140. A spring 142 for pushing the annular support plate 141 is installed at the lower end of the annular support plate 141, so that when the spring 2 161 drives the push plate 160 to reset, the spring 142 pushes the annular support plate 141, so that the wall thickness adjustment component 200 slides upward, so that the conical elastic member 210 and the annular elastic member 220 expand outward, and the inner walls of the conical elastic member 210 and the annular elastic member 220 are away from the outer wall of the core shaft 130 to increase the wall thickness of the plastic tube body.
[0031] A plurality of second limiting plates 150 for limiting the wall thickness adjustment assembly 200 are installed in the groove cavity of the limiting groove 140. Second limiting plates 150 are arranged on both sides of the first limiting plate 230. Both sides of the second limiting plate 150 are provided with sliding grooves 151 for the sliding block 231 to slide. The sliding grooves 151 are inclined grooves, which facilitate the first limiting plate 230 to slide upward while moving away from the central shaft 130.
[0032] A push plate 160 for pushing the first limit plate 230 is installed at the lower end of the blow molding machine die head 100. One end of the push plate 160 close to the first limit plate 230 is set as a bevel. The push plate 160 and the upper end of the first limit plate 230 are in contact with each other, and one end of the push plate 160 is installed with a spring 161 for controlling the push plate 160 to reset. The setting of the spring 161 makes it easy for the push plate 160 to always abut against the lower end of the nut 170. One end of the spring 161 is fixedly installed at the upper end of the groove cavity of the limit groove 140. The spring 161 can be set as a wave spring.
[0033] When the nut 170 moves upward, the spring 2 161 pushes the push plate 160 so that the push plate 160 always abuts against the inner wall of the nut 170. The spring 1 142 pushes the annular support plate 141 at the same time. The annular support plate 141 pushes the wall thickness adjustment component 200 upward, so that the slider 231 slides in the groove cavity of the slide groove 151, driving the wall thickness adjustment component 200 to move upward, thereby increasing the wall thickness of the plastic tube body. The utility model is suitable for making tube bodies with angular edges. If a circular tube body is required, a cutting structure can be connected to the lower end of the blow molding machine die head 100 to cut the tube body with angular edges on the outer wall.
[0034] A nut 170 is installed at the lower end of the blow molding machine die 100 for controlling the push plate 160 to extrude the first limit plate 230. A thread is installed in the middle of the outer wall of the blow molding machine die 100, which can control the nut 170 to move up and down in the middle of the tube body of the blow molding machine die 100. A conical groove is provided at the lower end of the nut 170 to facilitate the nut 170 to extrude the push plate 160 when it moves downward, so that one end of the push plate 160 extrude the first limit plate 230, so that the conical elastic member 210 and the annular elastic member 220 are close to the core shaft 130, thereby reducing the wall thickness of the plastic product.
[0035] The lower end of the blow molding machine die head 100 is equipped with a wall thickness adjustment component 200 for cooperating with the mandrel 130 to control the wall thickness of the product. The wall thickness adjustment component 200 is located in the groove cavity of the limiting groove 140. The wall thickness adjustment component 200 includes a conical elastic member 210 for guiding the plastic solution and the wall thickness adjustment component 200. The outer wall of the conical elastic member 210 is fixedly equipped with a plurality of first limiting plates 230 for limiting the conical elastic member 210, and the lower end of the first limiting plate 230 is fixedly installed on the outer wall of the annular elastic member 220. The first limiting plate 230 drives the conical elastic member 210 and the annular elastic member 220 away from or close to 130, and the conical elastic member 210 and the annular elastic member 220 undergo elastic deformation.
[0036] Slide blocks 231 are fixedly installed on both sides of the first limiting plate 230. The slide blocks 231 slide in the groove cavity of the slide groove 151. A through groove 232 for the circulation of coolant is opened inside the first limiting plate 230, so that when the plastic solution flows into the inside of the annular elastic member 220, the plastic solution is cooled, so that the temperature of the plastic solution is reduced and then hardened.
[0037] A cooling box 300 is installed at the lower end of the blow molding machine die head 100 for cooperating with the wall thickness adjustment component 200 to cool the plastic solution. The cooling box 300 includes a box body 310. A pump body for conveying the coolant is installed inside the box body 310. The coolant is conveyed to the inside of the push plate 160 and then to the groove cavity of the through groove 232 by starting the pump body.
[0038] An annular limit block 320 is fixedly installed on the upper end of the box body 310, and an annular groove 1 321 and an annular groove 2 322 are provided inside the annular limit block 320 for circulating the coolant. A plurality of liquid inlet pipes 1 330 for conveying coolant to the inside of the push plate 160 are installed at one end of the annular limit block 320, and a plurality of liquid outlet pipes 1 340 for conveying coolant to the groove cavity of the annular groove 2 322 are installed at one end of the push plate 160. The coolant inside the box body 310 is conveyed to the groove cavity of the annular groove 1 321, and then conveyed to the inside of the push plate 160 through the liquid inlet pipe 1 330. A groove cavity for conveying coolant is provided inside the push plate 160, and the coolant inside the first limit plate 230 is conveyed to the internal groove cavity of the push plate 160 through the liquid outlet pipe 2 360, and is conveyed to the groove cavity of the annular groove 2 322 through the liquid outlet pipe 1 340, and finally conveyed to the inside of the box body 310.
[0039] A second liquid outlet pipe 360 for conveying coolant to the interior of the push plate 160 is fixedly installed at the upper end of the first limit plate 230, and a second liquid inlet pipe 350 for conveying coolant to the groove cavity of the through groove 232 is installed at the lower end of the through groove 232, and one end of the second liquid inlet pipe 350 is fixedly installed on the push plate 160, so that the coolant is conveyed to the second liquid inlet pipe 350 through the internal groove cavity of the push plate 160, and the coolant moves from the lower end of the groove cavity of the through groove 232 to the upper end of the groove cavity of the through groove 232, thereby cooling the first limit plate 230, and then cooling the lower end of the wall thickness adjustment component 200, so as to cool the plastic solution, and finally the coolant returns to the interior of the box body 310 through the second liquid outlet pipe 360, the push plate 160, the first liquid outlet pipe 340 and the second annular groove 322.
[0040] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.
Claims
1. A blow molding machine with a die head capable of controlling the wall thickness of a product, comprising a blow molding machine die head (100), characterized in that: A feed port (10) for conveying a plastic solution to the interior of the blow molding machine die head (100) is installed at one end of the blow molding machine die head (100), a vent pipe (120) for blow molding is installed in the middle of the blow molding machine die head (100), and a mandrel (130) is installed inside the blow molding machine die head (100); A wall thickness adjustment component (200) for cooperating with the mandrel (130) to control the wall thickness of the product is installed at the lower end of the blow molding machine die head (100); a cooling box (300) for cooperating with the wall thickness adjustment component (200) to cool the plastic solution is installed at the lower end of the blow molding machine die head (100); The wall thickness adjustment component (200) comprises a conical elastic member (210) and an annular elastic member (220) for guiding a plastic solution, the outer wall of the conical elastic member (210) being provided with a first limiting plate (230) for limiting the conical elastic member (210), and the lower end of the first limiting plate (230) being installed on the outer wall of the annular elastic member (220).
2. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 1, characterized in that: A material passage trough (110) for allowing the plastic solution to flow is provided inside the blow molding machine die head (100), and a limiting groove (140) for allowing the wall thickness adjustment component (200) to move is provided at the lower end of the blow molding machine die head (100).
3. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 2, characterized in that: An annular support plate (141) is installed at the lower end of the groove cavity of the limiting groove (140), and a spring 1 (142) for pushing the annular support plate (141) is installed at the lower end of the annular support plate (141).
4. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 2, characterized in that: A second limiting plate (150) for limiting the wall thickness adjustment component (200) is installed in the groove cavity of the limiting groove (140), a push plate (160) for pushing the first limiting plate (230) is installed at the lower end of the blow molding machine die head (100), and a second spring (161) for controlling the push plate (160) to return is installed at one end of the push plate (160).
5. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 4, characterized in that: A nut (170) for controlling the push plate (160) to press the first limit plate (230) is installed at the lower end of the blow molding machine die head (100), and a conical groove is provided at the lower end of the nut (170).
6. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 4, characterized in that: Slide blocks (231) are installed on both sides of the first limit plate (230), a through groove (232) for the circulation of cooling liquid is provided inside the first limit plate (230), and sliding grooves (151) for the sliding blocks (231) to slide are provided on both sides of the second limit plate (150).
7. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 4, characterized in that: The cooling box (300) comprises a box body (310), an annular limit block (320) is installed at the upper end of the box body (310), an annular groove 1 (321) and an annular groove 2 (322) are provided inside the annular limit block (320) for circulating cooling liquid, a liquid inlet pipe 1 (330) for conveying cooling liquid to the inside of the push plate (160) is installed at one end of the annular limit block (320), and a liquid outlet pipe 1 (340) for conveying cooling liquid to the groove cavity of the annular groove 2 (322) is installed at one end of the push plate (160).
8. A blow molding machine with a die head capable of controlling the wall thickness of a product according to claim 6, characterized in that: A second liquid outlet pipe (360) for conveying coolant to the push plate (160) is installed at the upper end of the first limit plate (230), and a second liquid inlet pipe (350) for conveying coolant to the groove cavity of the through groove (232) is installed at the lower end of the through groove (232).