A forming die and forming method for warp tube processing

Abstract

The application discloses a forming die and forming method for warp tube processing, and belongs to the technical field of warp tube processing forming. The forming die comprises a fixed plate, a hydraulic cylinder is fixedly installed on the fixed plate, a first guide rod is elastically and slidably installed through the fixed plate, the first guide rod is fixedly installed on the outer side of a bottom plate, an activity plate is elastically and telescopically installed on the bottom plate, a male die seat is fixedly installed on the outer side of the bottom plate, a male die core is fixedly installed on the male die seat, a female die seat is arranged on the outer side of the male die seat, a female die core is fixedly installed on the female die seat, an ejection plate is elastically and telescopically installed on the outer side of the bottom plate, and a blowing assembly for assisting ejection is arranged on the ejection pin. The forming die and forming method for warp tube processing can assist ejection by blowing during the ejection of finished products, avoid deformation caused by excessive ejection stress of products, and automatically spray ejection agents after ejection, so that the ejection effect of subsequent products is further improved.

Description

Technical Field

[0001] This invention relates to the field of warp tube processing and forming technology, specifically to a forming mold and forming method for warp tube processing. Background Technology

[0002] Warp tubes are an indispensable core component in the textile industry. They are mainly used to wind warp yarns and work with components such as spindles and aluminum sleeve spindles to ensure the smooth operation of spinning and weaving processes. Their structural precision, dimensional stability, and mechanical properties directly affect spinning quality, production efficiency, and equipment operation stability. Warp tubes are mainly processed and formed by stamping or injection molding. The corresponding molding dies and molding methods are relatively mature, but there are still many technical defects that need to be solved in actual production applications.

[0003] Existing technology (Chinese patent publication number: CN223982080U, published on 2026-03-10) discloses a fully automatic demolding mechanism for a multi-hole conical plastic yarn tube, including an upper injection mold and a lower injection mold. A positioning and fixing template and a lifting plate are provided between the upper and lower injection molds. Molten material is injected into multiple cavities through an injection diverter. After injection molding, the mold opens, and the positioning and fixing template and the lifting plate disengage, causing the sliding shrink-type demolding assembly to move away from the inner cylinder of the conical plastic yarn tube. During the upward movement of the sliding shrink-type demolding assembly, the interior of the assembly unfolds, releasing the molded plastic part from within the assembly without the need for... Manual demolding is no longer required; after mold opening, fully automatic demolding can be completed, resulting in a high degree of automation and significantly reducing manual labor intensity. Existing technology (Chinese Patent No. CN212603733U, Publication Date: 2021-02-26) discloses a mold for making paper yarn tubes and the paper yarn tube thereof, including a pressing device. The pressing device further includes an upper moving plate, a fixed plate, and a lower moving plate. An upper mold is installed below the upper moving plate; a lower mold is installed above the lower moving plate, and the lower mold and upper mold fit together. The upper mold is fixedly connected to the upper moving plate, and the lower mold is fixedly connected to the lower moving plate. The upper mold includes an inner sleeve and an outer sleeve, the outer sleeve being cylindrical and fixedly connected to the upper moving plate.

[0004] Existing molding dies for warp tube processing only use ejector pins for ejection, resulting in a single ejection method. This makes the product susceptible to deformation under stress, which reduces the molding effect of the finished product and has certain defects in use. Summary of the Invention

[0005] The purpose of this invention is to provide a molding die and molding method for warp tube processing, in order to solve the problem mentioned in the background art that the molding dies for warp tube processing on the market only achieve ejection and demolding through ejector pins, which is a single demolding method, making the product easy to deform under stress, thereby reducing the molding effect of the finished product.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a forming mold and forming method for warp tube processing, comprising a fixed plate, a hydraulic cylinder fixedly mounted on the fixed plate, and a first guide rod elastically slidingly mounted through the fixed plate, the first guide rod being fixedly mounted on the outer side of a base plate, a movable plate elastically telescopically mounted on the base plate, a male mold seat fixedly mounted on the outer side of the base plate, a male mold core fixedly mounted on the male mold seat, a female mold seat provided on the outer side of the male mold seat, a female mold core fixedly mounted on the female mold seat, an ejector plate elastically telescopically mounted on the outer side of the base plate, and support columns and ejector pins fixedly mounted on both sides of the ejector plate, a negative pressure component for positioning the finished product provided on the male mold seat, and an air blowing component for assisting demolding provided on the ejector pin.

[0007] Preferably, a first spring is fixedly connected between the fixed plate and the base plate, and a second guide rod is fixedly installed on the movable plate, with the second guide rod sliding through the base plate. At the same time, a second spring is fixedly connected between the base plate and the second guide rod, and the elastic force of the first spring is greater than that of the second spring.

[0008] Preferably, a guide cylinder is fixedly installed through the male mold base, and a guide post is fixedly installed on the female mold base, with the guide post and guide cylinder having a clearance fit.

[0009] Preferably, the support column slides through the base plate, and as the base plate approaches the fixed plate, the support column contacts and abuts against the middle position of the fixed plate, and the ejector pin on the ejector plate slides through the male mold core, while the top of the ejector pin is attached to the outer side of the molded product.

[0010] Preferably, the negative pressure component includes a groove formed in the middle of the male mold core, and the groove and the injection hole on the female mold base are coaxially corresponding. The diameter of the groove is smaller than the diameter of the injection hole, and a sealing block is slidably disposed in the groove. Meanwhile, a return spring is fixedly connected between the male mold core and the sealing block.

[0011] Preferably, a traction cable is fixedly connected between the sealing block and the movable plate, and the sealing block is elastically slid in the groove by the traction cable during the movement of the movable plate.

[0012] Preferably, a conveying pipe is provided through the ejector pin, a first bladder is sleeved on the outside of the ejector pin, and the first bladder is fixedly connected between the mold base and the ejector plate. An air inlet pipe is connected to the outside of the first bladder, and an exhaust pipe is connected between the first bladder and the conveying pipe. A one-way valve is provided on the air inlet pipe and the exhaust pipe.

[0013] Preferably, a second bladder is fixedly connected between the ejector plate and the bottom plate, and an inlet pipe is connected between the second bladder and the external mold release agent storage mechanism, and a drain pipe is connected between the second bladder and the delivery pipe. At the same time, one-way valves are provided on the inlet pipe and the drain pipe.

[0014] A forming method for processing warp tubes, the specific steps of which are as follows: S1. Control the male mold base and female mold base to close the mold and perform injection molding. After cooling and molding, control the hydraulic cylinder to drive the movable plate to move. At this time, the movable plate pulls the sealing block through the traction cable, so that a negative pressure is formed between the excess material formed at the end of the slide and the injection hole, so as to prevent the finished product from being left in the female mold core. Then control the hydraulic cylinder to continue to move, and the movable plate drives the base plate to approach the fixed plate to realize the mold opening. S2. As the base plate moves, the support column contacts the fixed plate, causing the ejector plate to slide between the base plate and the male mold base. This causes the ejector pin to push the product outside the male mold core, while the first bladder is compressed. When the upper end of the conveying pipe moves to the outside of the male mold core, the compressed gas in the first bladder is blown towards the product through the conveying pipe, thus achieving air blowing-assisted demolding. S3. After demolding is completed, control the ejector plate to reset, so that the bottom plate and the ejector plate squeeze the second bladder, so that the release agent sucked in the second bladder enters the delivery pipe through the drain pipe, and is sprayed onto the male mold core, which facilitates the subsequent molding and demolding of the product.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the forming mold and forming method for warp tube processing can assist demolding by blowing air during the ejection process of the finished product, avoiding excessive demolding stress and deformation of the product, and can automatically spray release agent after demolding, further improving the subsequent product demolding effect. The specific contents are as follows; 1. It is equipped with a movable plate and a male mold core. As the hydraulic cylinder pulls the movable plate, the base plate and the movable plate can undergo relative elastic displacement. At this time, the movable plate can pull the sealing block in the slide groove through the traction cable before the mold opens, so that a negative pressure is generated between the slide groove and the molding waste at the injection port, thereby adsorbing the molded product on the outside of the male mold core, avoiding the finished product from being stuck in the female mold core and affecting normal demolding. 2. The mold is equipped with an ejector plate, a demolding pin, a conveying pipe, and a first bladder. As the mold opens, the ejector plate moves the demolding pin, which pushes and demolds the molded product outside the male mold core. At the same time, the ejector plate can work with the male mold base to squeeze the first bladder. When the upper end of the conveying pipe inside the demolding pin moves to the outside of the male mold base, the compressed gas in the first bladder is blown through the conveying pipe between the male mold core and the product, thereby assisting in demolding. In addition, the suction effect of the slide groove can achieve the separation between the product and the waste. 3. It is equipped with a delivery pipe and a second bladder. After demolding, the ejector plate is controlled to reset. At this time, the ejector plate and the bottom plate squeeze the second bladder, so that the mold release agent sucked in by the second bladder through the liquid inlet pipe is input into the delivery pipe through the liquid outlet pipe. This allows the delivery pipe to spray the mold release agent onto the male mold core, which facilitates convenient demolding in the future. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the male mold base and the female mold base of the present invention; Figure 3 This is a schematic diagram of the mounting structure of the base plate and the male mold base of the present invention; Figure 4 This is a schematic cross-sectional view of the common mold core of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the top plate mounting structure of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the ejector pin and the ejector pin of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B; Figure 9 For the present invention Figure 7 Enlarged structural diagram at point C.

[0017] In the diagram: 1. Fixed plate; 2. First guide rod; 3. Base plate; 4. First spring; 5. Hydraulic cylinder; 6. Movable plate; 7. Second guide rod; 8. Second spring; 9. Male mold base; 901. Guide cylinder; 10. Male mold core; 11. Female mold base; 12. Female mold core; 13. Guide pillar; 14. Ejector plate; 15. Support pillar; 16. Ejector pin; 17. Slide groove; 18. Sealing block; 19. Return spring; 20. Traction cable; 21. Conveying pipe; 22. First bladder; 23. Air inlet pipe; 24. Exhaust pipe; 25. Second bladder; 26. Liquid inlet pipe; 27. Liquid outlet pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Existing molding dies for warp tube processing only use ejector pins 16 for ejection, resulting in a single ejection method. This makes the product susceptible to deformation under stress, thus reducing the molding effect of the finished product. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-9 As shown; a forming mold for warp tube processing includes a fixed plate 1, a hydraulic cylinder 5 fixedly installed on the fixed plate 1, and a first guide rod 2 elastically slidingly installed through the fixed plate 1, and the first guide rod 2 fixedly installed on the outside of a base plate 3. A movable plate 6 is elastically telescopically installed on the base plate 3. A male mold base 9 is fixedly installed on the outside of the base plate 3, and a male mold core 10 is fixedly installed on the male mold base 9. A female mold base 11 is provided on the outside of the male mold base 9, and a female mold core 12 is fixedly installed on the female mold base 11. An ejector plate 14 is elastically telescopically installed on the outside of the base plate 3, and support columns 15 and ejector pins 16 are fixedly installed on both sides of the ejector plate 14 respectively. A negative pressure component for positioning the finished product is provided on the male mold base 9, and an air blowing component for assisting demolding is provided on the ejector pins 16.

[0020] A first spring 4 is fixedly connected between the fixed plate 1 and the base plate 3, and a second guide rod 7 is fixedly installed on the movable plate 6, with the second guide rod 7 sliding through the base plate 3. A second spring 8 is fixedly connected between the base plate 3 and the second guide rod 7. The elastic force of the first spring 4 is greater than that of the second spring 8. A guide cylinder 901 is fixedly installed through the male mold base 9, and a guide post 13 is fixedly installed on the female mold base 11, with a clearance fit between the guide post 13 and the guide cylinder 901. A support post 15 slides through the base plate 3, and as the base plate 3 approaches the fixed plate 1, the support post 15 contacts and abuts against the middle position of the fixed plate 1. A demolding pin 16 on the ejector plate 14 slides through the male mold core 10, with the top of the demolding pin 16 adhering to the outer side of the molded product. The negative pressure component includes a groove 17 formed in the middle of the male mold core 10. The injection holes on the male mold base 17 and the female mold base 11 are coaxially corresponding, and the diameter of the groove 17 is smaller than that of the injection hole. A sealing block 18 is provided in the groove 17 for sealing and sliding. A return spring 19 is fixedly connected between the male mold core 10 and the sealing block 18. A traction cable 20 is fixedly connected between the sealing block 18 and the movable plate 6. During the movement of the movable plate 6, the sealing block 18 is pulled by the traction cable 20 to slide elastically in the groove 17. A delivery pipe 21 is provided through the ejector pin 16. A first bladder 22 is sleeved on the outside of the ejector pin 16. A first bladder 22 is fixedly connected between the male mold base 9 and the ejector plate 14. An air inlet pipe 23 is connected to the outside of the first bladder 22. An exhaust pipe 24 is connected between the first bladder 22 and the delivery pipe 21. A one-way valve is provided on the air inlet pipe 23 and the exhaust pipe 24.

[0021] The male mold base 9 and female mold base 11 are controlled to close, and hot melt plastic is injected between the male mold core 10 and female mold core 12 through the injection hole. After the product is formed, the hydraulic cylinder 5 is controlled to pull the movable plate 6. Since the elastic force of the first spring 4 is greater than that of the second spring 8, the base plate 3 and the movable plate 6 can undergo relative elastic displacement. At this time, the movable plate 6 can pull the sealing block 18 in the slide groove 17 to slide elastically before the mold opens by the traction cable 20, so that a negative pressure is generated between the slide groove 17 and the molding waste at the injection port, thereby adsorbing the molded product on the outside of the male mold core 10, avoiding the finished product from being stuck in the female mold core 12 and affecting normal demolding. As the hydraulic cylinder 5 continues to pull the movable plate 6, the movable plate 6 can be driven to move The base plate 3 moves to open the mold. At this time, the support column 15 on the ejector plate 14 will contact the fixed plate 1. The ejector plate 14 will drive the demolding pin 16 to move, so that the demolding pin 16 can push and demold the molded product outside the male mold core 10. At the same time, the ejector plate 14 can cooperate with the male mold base 9 to squeeze the first bladder 22 to compress the gas inside the first bladder 22. When the upper end of the conveying pipe 21 inside the demolding pin 16 moves to the outside of the male mold base 9, the compressed gas in the first bladder 22 is blown between the male mold core 10 and the product through the conveying pipe 21, thereby achieving demolding assistance through airflow. At the same time, with the adsorption effect of the slide groove 17, the separation between the product and the waste can be achieved.

[0022] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Existing molding dies for warp tube processing are inconvenient for automatically spraying release agent, making subsequent demolding difficult. To further solve this technical problem, this example discloses the following technical content: Figures 7-9 As shown, a second bladder 25 is fixedly connected between the ejector plate 14 and the base plate 3, and an inlet pipe 26 is connected between the second bladder 25 and the external mold release agent storage mechanism. A drain pipe 27 is connected between the second bladder 25 and the delivery pipe 21. One-way valves are provided on the inlet pipe 26 and the drain pipe 27.

[0023] After demolding is completed, the ejector plate 14 is reset. At this time, the ejector plate 14, together with the base plate 3, squeezes the second bladder 25, so that the mold release agent sucked in by the second bladder 25 through the liquid inlet pipe 26 is input into the delivery pipe 21 through the liquid outlet pipe 27, so that the delivery pipe 21 can spray the mold release agent onto the male mold core 10, thereby facilitating convenient demolding in the future.

[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A forming mold for processing warp tubes, comprising a fixed plate (1), on which a hydraulic cylinder (5) is fixedly mounted, and a first guide rod (2) is elastically slidably mounted through the fixed plate (1), and the first guide rod (2) is fixedly mounted on the outside of a base plate (3), a movable plate (6) is elastically telescopically mounted on the base plate (3), a male mold base (9) is fixedly mounted on the outside of the base plate (3), and a male mold core (10) is fixedly mounted on the male mold base (9), a female mold base (11) is provided on the outside of the male mold base (9), and a female mold core (12) is fixedly mounted on the female mold base (11), characterized in that, The outer side of the base plate (3) is elastically telescopically mounted with an ejector plate (14), and the two sides of the ejector plate (14) are respectively fixedly mounted with a support column (15) and a demolding pin (16). The male mold base (9) is provided with a negative pressure component for positioning the finished product, and the demolding pin (16) is provided with an air blowing component for assisting demolding.

2. The forming mold for processing warp tubes according to claim 1, characterized in that: A first spring (4) is fixedly connected between the fixed plate (1) and the base plate (3), and a second guide rod (7) is fixedly installed on the movable plate (6). The second guide rod (7) slides through the base plate (3). At the same time, a second spring (8) is fixedly connected between the base plate (3) and the second guide rod (7). The elastic force of the first spring (4) is greater than that of the second spring (8).

3. The forming mold for processing warp tubes according to claim 1, characterized in that: A guide cylinder (901) is fixedly installed through the male mold base (9), and a guide post (13) is fixedly installed on the female mold base (11), with the guide post (13) and the guide cylinder (901) being fitted with a clearance.

4. The forming mold for processing warp tubes according to claim 1, characterized in that: The support column (15) slides through the base plate (3), and as the base plate (3) approaches the fixed plate (1), the support column (15) contacts and abuts against the middle position of the fixed plate (1), and the ejector pin (16) on the ejector plate (14) slides through the male mold core (10), while the top of the ejector pin (16) is attached to the outside of the molded product.

5. A forming mold for processing warp tubes according to claim 1, characterized in that: The negative pressure component includes a groove (17) located in the middle of the male mold core (10), and the groove (17) and the injection hole on the female mold base (11) are coaxially corresponding. The diameter of the groove (17) is smaller than the diameter of the injection hole. A sealing block (18) is provided in the groove (17) for sealing and sliding. At the same time, a return spring (19) is fixedly connected between the male mold core (10) and the sealing block (18).

6. The forming mold for processing warp tubes according to claim 5, characterized in that: A traction cable (20) is fixedly connected between the sealing block (18) and the movable plate (6), and the sealing block (18) is pulled elastically in the groove (17) by the traction cable (20) during the movement of the movable plate (6).

7. The forming mold for processing warp tubes according to claim 1, characterized in that: A delivery pipe (21) is provided through the ejector pin (16). A first bladder (22) is sleeved on the outside of the ejector pin (16). The first bladder (22) is fixedly connected between the mold base (9) and the ejector plate (14). An air inlet pipe (23) is connected to the outside of the first bladder (22). An exhaust pipe (24) is connected between the first bladder (22) and the delivery pipe (21). A one-way valve is provided on the air inlet pipe (23) and the exhaust pipe (24).

8. The forming mold for processing warp tubes according to claim 1, characterized in that: A second bladder (25) is fixedly connected between the top plate (14) and the bottom plate (3), and an inlet pipe (26) is connected between the second bladder (25) and the external mold release agent storage mechanism, and a drain pipe (27) is connected between the second bladder (25) and the delivery pipe (21). At the same time, one-way valves are provided on the inlet pipe (26) and the drain pipe (27).

9. A forming method for warp tube processing, wherein the forming mold for warp tube processing is applied according to any one of claims 1-8, characterized in that, The specific steps are as follows: S1. Control the male mold base (9) and female mold base (11) to close the mold and perform injection molding. After cooling and molding, control the hydraulic cylinder (5) to drive the movable plate (6) to move. At this time, the movable plate (6) pulls the sealing block (18) through the traction cable (20), so that a negative pressure is formed between the slide groove (17) and the excess material formed at the end of the injection hole, so as to prevent the finished product from being left in the female mold core (12). Then control the hydraulic cylinder (5) to continue to move, and the movable plate (6) drives the base plate (3) to approach the fixed plate (1) to realize the mold opening. S2. As the base plate (3) moves, the support column (15) contacts the fixed plate (1), thereby causing the ejector plate (14) to slide between the base plate (3) and the male mold base (9), which in turn causes the ejector pin (16) to push the product outside the male mold core (10). At the same time, the first bladder (22) is compressed. When the upper end of the conveying pipe (21) moves to the outside of the male mold core (10), the compressed gas in the first bladder (22) is blown towards the product through the conveying pipe (21) to achieve air blowing assisted demolding. S3. After demolding is completed, control the ejector plate (14) to reset, so that the bottom plate (3) and the ejector plate (14) squeeze the second bladder (25), so that the demolding agent sucked in the second bladder (25) enters the delivery pipe (21) through the drain pipe (27), and is sprayed onto the male mold core (10) to facilitate the subsequent molding and demolding of the product.

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