A mold structure for long tubular products

Abstract

The utility model relates to a mould structure for long tube product includes mutually coordinated front mould and back mould, the back mould includes male die, push -plate, oil cylinder, line position, insert needle, the male die is fixed in push -plate, the oil cylinder is two groups opposite arrangement fixed in push -plate, and the retractable end of each oil cylinder is fixed with a line position, and each line position is fixed with an insert needle. The utility model has the characteristics of avoiding the deformation of insert needle due to rigidity.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a mold structure for long tube products. Background Technology

[0002] In the mold-making industry, the current practice for hollow tubular products is to directly create slides and inserts on the mold to complete the core pulling process. However, if the length of the straight section of a pipe-like product is significantly larger than its cross-sectional dimension, a single, longer slide insert must be used during molding. As the length of the slide insert increases, deformation can occur during prolonged mold opening and closing operations – the rigidity of the slide insert decreases with its increased length. Utility Model Content

[0003] This utility model provides a mold structure for long tube products, which can avoid deformation caused by insufficient rigidity of the insert pin, thus solving the problems existing in related technologies and ensuring product quality. The technical solution is as follows: The mold structure for long tube products provided in this embodiment includes a front mold and a rear mold that cooperate with each other. The rear mold includes a male mold core, a push plate, a hydraulic cylinder, a slide, and insert pins. The male mold core is fixed to the push plate. The hydraulic cylinders are arranged in two opposite groups and fixed to the push plate. Each hydraulic cylinder has a slide fixed to its extension end, and each slide has an insert pin fixed to it.

[0004] Furthermore, the push plate has a guide groove with a T-shaped cross-section, and the lower part of the slide position forms a sliding part that matches the guide groove, so that the slide position is embedded in the guide groove and is driven by the oil cylinder to slide along the length direction of the guide groove.

[0005] Furthermore, the male mold core has a receiving groove; One end of the insert pin is fixed to the slide position, and the other end extends toward the male mold core and is located in the receiving groove.

[0006] Furthermore, the rear mold also includes a support plate, a spring, and an insert. The spring is disposed between the support plate and the push plate. One end of the insert is fixed to the support plate, and the other end passes through the push plate and the male mold core to contact the insert pin surface.

[0007] Implementing the above-described embodiments of the present invention will have at least the following beneficial effects: By setting the pins in multiple groups, the rigidity of the pins is effectively enhanced, avoiding the problem of deformation due to insufficient rigidity.

[0008] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the overall structure of a mold structure for long tube products provided in this embodiment of the present utility model; Figure 2 A schematic diagram of the overall structure of a rear mold provided in an embodiment of this utility model; Figure 3 A schematic diagram of the overall structure of a male mold core provided for an embodiment of this utility model; Figure 4 A cross-sectional view provided for an embodiment of this utility model; Figure 5 A partial structural cross-sectional view provided for an embodiment of this utility model; Figure 6 Another cross-sectional view provided for an embodiment of this utility model.

[0011] Wherein: 100, front mold; 200, rear mold; 210, male mold core; 21A, receiving groove; 220, push plate; 230, hydraulic cylinder; 240, sliding block; 250, insert pin; 260, support plate; 270, spring; 280, insert. Detailed Implementation

[0012] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0013] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0015] The following will be combined with the appendix Figure 1-6 The technical solution provided by this utility model will be described in detail.

[0016] This utility model provides a mold structure for long tube products, including a front mold 100 and a rear mold 200 that cooperate with each other. The rear mold 200 includes a male mold core 210, a push plate 220, a hydraulic cylinder 230, a slide 240, and a pin 250. The male mold core 210 is fixed to the push plate 220. The hydraulic cylinders 230 are arranged in two opposite groups and fixed to the push plate 220. Each hydraulic cylinder 230 has a slide 240 fixed to its telescopic end, and each slide 240 has a pin 250 fixed to it.

[0017] The technical solution disclosed in this utility model, by setting the hydraulic cylinder 230, slide 240, and insert pin 250 in a one-to-one correspondence, enables two insert pins 250 to form the straight body section of a tubular product during mold closing. Compared with the traditional method of using a single insert pin, this embodiment sets the insert pins 250 into multiple groups, effectively enhancing the rigidity of the insert pins 250 and avoiding the problem of deformation due to insufficient rigidity.

[0018] It should be understood that during mold closing, the two sets of hydraulic cylinders 230 first drive the two sets of slides 240 and the insert pins 250 on the slides 240 to move relative to each other, so that the end faces of the two sets of insert pins 250 contact to form the straight section of the long tube-like product. Subsequently, the front mold 100 and the rear mold 200 close the mold.

[0019] It is worth noting that this specific embodiment does not show the complete structure of the mold, but only a part of the structure, in order to show the difference from the insert pin 250 in the traditional core-pulling structure.

[0020] Furthermore, the push plate 220 has a guide groove with a T-shaped cross-section (shown in the figure but not labeled), and the lower part of the slide 240 has a sliding part (shown in the figure but not labeled) that matches the guide groove, so that the slide 240 is embedded in the guide groove and driven by the hydraulic cylinder 230 to slide along the length of the guide groove. By providing the sliding part and the guide groove, the movement of the slide 240 can be made more stable.

[0021] Furthermore, the male mold core 210 has a receiving groove 21A; One end of the insert pin 250 is fixed to the slide position 240, and the other end extends toward the male mold core 210 and is located in the receiving groove 21A.

[0022] Furthermore, the rear mold 200 also includes a support plate 260, a spring 270, and an insert 280. The spring 270 is located between the support plate 260 and the push plate 220. One end of the insert 280 is fixed to the support plate 260, and the other end passes through the push plate 220 and the male mold core 210 to contact the insert pin 250.

[0023] During mold opening, the hydraulic cylinder 230 first drives the slide 240 and insert pin 250 away from the male mold core 210 to complete the core pulling. Then the front mold 100 and the rear mold 200 separate, and the push plate 220, under the action of the spring 270, drives the male mold core 210 to complete the ejection of the product once, so that the product and the insert 280 are separated.

[0024] It should be understood that the mold structure of this utility model also includes an ejector plate and ejector pins fixed on the ejector plate. After the first ejection is completed, the injection molding machine provides power to drive the ejector plate and ejector pins to continue moving towards the male mold core 210, so that the ejector pins pass through the support plate 260, the push plate 220 and the male mold core 210 to eject the injection-molded long tube product to complete the second ejection action.

[0025] It is worth noting that insert 280 is used to form holes / cavities in the product.

[0026] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A mold structure for long tubular products, comprising a front mold and a rear mold that cooperate with each other, characterized in that: The rear mold includes a male mold core, a push plate, a hydraulic cylinder, a slide, and insert pins. The male mold core is fixed to the push plate. The hydraulic cylinders are arranged in two opposite groups and fixed to the push plate. Each hydraulic cylinder has a slide fixed to its extension end, and each slide has an insert pin fixed to it.

2. The mold structure for long tube products according to claim 1, characterized in that: The push plate has a guide groove with a T-shaped cross-section, and the lower part of the slide position forms a sliding part that matches the guide groove, so that the slide position is embedded in the guide groove and is driven by the oil cylinder to slide along the length direction of the guide groove.

3. The mold structure for long tube products according to claim 1, characterized in that: The male mold core has a receiving groove; One end of the insert pin is fixed to the slide position, and the other end extends toward the male mold core and is located in the receiving groove.

4. The mold structure for long tube products according to claim 1, characterized in that: The rear mold also includes a support plate, a spring, and an insert. The spring is located between the support plate and the push plate. One end of the insert is fixed to the support plate, and the other end passes through the push plate and the male mold core to contact the insert pin surface.

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