A forming die for an oxygen cylinder shell

Abstract

The utility model relates to a kind of forming die of oxygen cylinder shell, including respectively front and rear arrangement and mutually cooperate's mobile module and positioning module, fixed in the feed plate of mobile module front side, fixed in the bottom plate of positioning module rear side, and fixed in the forming module of positioning module front side;Two upper and lower symmetrical distribution's pinhole forming units are further equipped between mobile module and positioning module, pinhole forming unit includes movablely connected in the front side of positioning module to have left and right translation function and located the driving slider of forming module left side, multiple transverse fixed on the core rod of driving slider towards the outer wall on one side of forming module, fixed on the outer wall on the left side of positioning module oil cylinder, and embedded in the rear side inside of mobile module and with each core rod mutually cooperate's ear block;The utility model has simplified production step to improve production efficiency;In addition, the machining precision of pinhole is also ensured.

Description

Technical Field

[0001] This utility model relates to a molding die for an oxygen cylinder shell. Background Technology

[0002] An oxygen cylinder shell is a pressure vessel used for storing and transporting oxygen. Traditional oxygen cylinder shells are usually made of alloy structural steel (such as manganese steel, chromium molybdenum steel, etc.). With the continuous development of injection molding technology, more and more oxygen cylinder shells on the market are now made of high-strength plastics (such as ABS material), which have the characteristics of low cost, high strength, light weight, and durability. Like other plastic parts, the manufacturing process of plastic oxygen cylinder shells depends on matching injection molding molds and corresponding injection molding machines.

[0003] Because the outer wall of the oxygen cylinder shell has multiple lugs near its opening edge for connecting other accessories, and each lug needs to have multiple pin holes machined for the pin shaft to pass through; the existing injection mold for the oxygen cylinder shell can only generate each lug during the molding process, but the pin holes in each lug cannot be machined at once. Instead, a drilling step needs to be arranged separately after demolding. Therefore, the oxygen cylinder shell needs to be repeatedly loaded and unloaded, which is both time-consuming and labor-intensive, resulting in a cumbersome production process and low production efficiency. In addition, the positioning of the pin holes is also difficult during drilling, so the machining accuracy of the pin holes cannot be guaranteed, which needs further improvement. Utility Model Content

[0004] In view of the current state of the prior art, the technical problem to be solved by this utility model is to provide a molding die for an oxygen cylinder shell that saves time and effort, simplifies production steps to improve production efficiency, and ensures the accuracy of pin hole machining.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: a molding die for an oxygen cylinder shell, comprising a moving module and a positioning module respectively arranged front and rear and cooperating with each other, a feeding plate fixed to the front side of the moving module, a base plate fixed to the rear side of the positioning module, and a molding module fixed to the front side of the positioning module, characterized in that: Two pin hole forming units are also provided between the moving module and the positioning module. Each pin hole forming unit includes an active slider that is movably connected to the front of the positioning module to enable left and right translation and is located on the left side of the forming module; multiple core rods that are horizontally fixed on the active slider and face the outer wall of the forming module; a hydraulic cylinder that is fixed on the outer wall of the left side of the positioning module; and an ear block that is embedded in the rear of the moving module and cooperates with each core rod. The telescopic end of the hydraulic cylinder is horizontally set to the right and fixed on the active slider. The rear outer wall of the moving module is provided with a waist-shaped cavity that cooperates with the forming module. The upper and lower edges of the opening of the waist-shaped cavity are provided with symmetrically distributed installation notches. The ear blocks in the two pin hole forming units are respectively embedded and fixed in two mounting notches. Each ear block has a connecting arc surface on the outer wall facing the waist-shaped cavity that matches the inner wall of the waist-shaped cavity. On the bottom surface of each mounting notch, two first notch slots are respectively provided on the side edge facing the waist-shaped cavity. Correspondingly, two second notch slots are respectively provided on the connecting arc surface of each ear block. The two second notch slots on each ear block are respectively connected to the two first notch slots on the same side.

[0006] Preferably, each ear block has multiple through holes between its left and right outer walls, passing through each second notch, the number of through holes being equal to the number of core rods, and the position of each through hole corresponding to the position of a core rod.

[0007] Preferably, an installation groove is provided between the outer walls of the left and right sides of the middle part of the molding module, and a core block is also embedded and fixed in the installation groove.

[0008] Preferably, two symmetrically arranged triangular blocks are formed on the outer left side of the root of the molding module. Correspondingly, two triangular notches are opened on the left edge of the opening of the waist-shaped cavity, which respectively cooperate with the two triangular blocks.

[0009] Preferably, a sidewall forming unit is further provided between the moving module and the positioning module. The sidewall forming unit includes a passive slider that is movably connected to the front of the positioning module to have left and right translation function and is located on the left side of the forming module, and a traction rod that is obliquely inserted into the passive slider. The front end of the traction rod is fixed to the moving module.

[0010] Preferably, the molding module has a first circular cavity located below the mounting groove on the outer wall of the side facing the moving module. The bottom center of the first circular cavity also has concentrically arranged protrusions. A molding cover is also fitted and fixed outside the protrusions. The center of the outer wall of the end of the molding cover also has a protrusion.

[0011] Preferably, the bottom surface of the waist-shaped concave cavity is provided with a second circular recessed cavity that cooperates with the end of the molded cover, and the center of the bottom surface of the second circular recessed cavity is provided with a countersunk hole that cooperates with the protrusion.

[0012] Compared with the prior art, the advantages of this utility model are as follows: This utility model can form the pin holes in each ear plate at one time during the molding process of the oxygen cylinder shell, thereby eliminating the need to arrange drilling separately after demolding, thus avoiding repeated feeding and unloading of the oxygen cylinder shell, thereby achieving the effect of saving time and labor, while simplifying the production steps to improve production efficiency; in addition, it also ensures the processing accuracy of the pin holes. Attached Figure Description

[0013] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent when taken in conjunction with the accompanying drawings and the following detailed description; throughout the drawings, the same or similar reference numerals denote the same or similar elements; it should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale; in the drawings: Figure 1 This is an exploded view of the right front side of this utility model; Figure 2 This is an exploded view of the left rear side of the movable module, ear block, and molded cover of this utility model; Figure 3 This is a structural diagram of the left rear side of the sidewall forming unit of this utility model; Figure 4 This is a left front structural diagram of the molding module and pin hole molding unit of this utility model. Detailed Implementation

[0014] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0015] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0016] like Figures 1-4As shown, a molding die for an oxygen cylinder shell includes a moving module 1 and a positioning module 2 that are respectively arranged in front of and behind and cooperate with each other, a feeding plate 3 fixed to the front side of the moving module 1, a bottom plate 4 fixed to the rear side of the positioning module 2, and a molding module 5 fixed to the front side of the positioning module 2. Two pin hole forming units 6 are also provided between the moving module 1 and the positioning module 2. The pin hole forming unit 6 includes an active slider 61 that is movably connected to the front side of the positioning module 2 to have the function of left and right translation and is located on the left side of the forming module 5, multiple core rods 62 that are horizontally fixed on the active slider 61 facing the outer wall of the forming module 5, a hydraulic cylinder 63 fixed on the left outer wall of the positioning module 2, and an ear block 64 that is embedded in the rear side of the moving module 1 and cooperates with each core rod 62. The telescopic end of the hydraulic cylinder 63 is horizontally set to the right and fixed on the active slider 61. The rear outer wall of the moving module 1 is provided with a waist-shaped cavity 11 that cooperates with the forming module 5. The upper and lower edges of the opening of the waist-shaped cavity 11 are provided with a symmetrically distributed installation notch 12. The ear blocks 64 in the two pin hole forming units 6 are respectively embedded and fixed in the two mounting notches 12. Each ear block 64 has a connecting arc surface 641 that cooperates with the inner wall of the waist-shaped cavity 11 on the outer wall facing the waist-shaped cavity 11. On the bottom surface of each mounting notch 12, two first notch slots 13 are respectively provided on one side edge facing the waist-shaped cavity 11. Correspondingly, two second notch slots 642 are respectively provided on the connecting arc surface 641 of each ear block 64. The two second notch slots 642 on each ear block 64 are respectively connected to the two first notch slots 13 on the same side.

[0017] Multiple through holes 643 are provided between the left and right outer walls of each ear block 64, passing through each second notch 642. The number of through holes 643 is equal to the number of core rods 62, and the position of each through hole 643 is matched with the position of a corresponding core rod 62.

[0018] An installation groove 51 is provided between the outer walls of the left and right sides of the middle part of the molding module 5, and a core block 7 is also embedded and fixed in the installation groove 51.

[0019] On the outer wall of the left side of the root of the molding module 5, two symmetrically arranged triangular seats 52 are formed outward. Correspondingly, two triangular notches 14 are opened on the left edge of the opening of the waist-shaped cavity 11, which respectively cooperate with the two triangular seats 52.

[0020] A sidewall forming unit 8 is also provided between the moving module 1 and the positioning module 2. The sidewall forming unit 8 includes a passive slider 81 that is movably connected to the front of the positioning module 2 to have left and right translation function and is located on the left side of the forming module 5, and a traction rod 82 that is obliquely inserted into the passive slider 81. The front end of the traction rod 82 is fixed on the moving module 1.

[0021] A stop block 811 is formed on the outer wall of the passive slider 81 facing the molding module 5. A back block 812 is formed on the outer wall of the left side of the stop block 811. A molding arc surface 813 is formed on the outer wall of the back block 812 facing the molding module 5, which cooperates with the outer wall of the right side of the molding module 5.

[0022] An arc-shaped protrusion 83 is also fixed on the formed arc surface 813.

[0023] On the outer wall of the molding module 5 facing the moving module 1, a first circular cavity 53 is provided below the mounting groove 51. The bottom center of the first circular cavity 53 is also formed with concentric protrusions 54. A molding cover 9 is also fitted and fixed outside the protrusions 54. A protrusion 91 is also formed outward from the center of the outer wall of the end of the molding cover 9.

[0024] On the left inner wall of the waist-shaped cavity 11, there are also a number of arc-shaped rib grooves 15 arranged sequentially from top to bottom.

[0025] A second circular recessed cavity 16 is provided on the bottom surface of the waist-shaped cavity 11, which cooperates with the end of the molded cover 9. A countersunk hole 17 is provided at the center of the bottom surface of the second circular recessed cavity 16, which cooperates with the protrusion 91.

[0026] Working principle: The feed plate 3 and the base plate 4 are respectively installed on the action mechanism and the machine body of the injection molding machine. The action mechanism is operated to drive the feed plate 3 to move backward, thereby driving the moving module 1 to move towards the positioning module 2 until the rear outer wall of the moving module 1 and the front outer wall of the positioning module 2 are joined together (existing technology).

[0027] At this time, the molding module 5 extends into the waist-shaped cavity 11, and the ear blocks 64 in the two pin hole molding units 6 are located on the upper and lower sides of the root of the molding module 5 respectively; the two triangular seat blocks 52 also extend into the two triangular notched oral cavity 14 respectively.

[0028] The extension end of the hydraulic cylinder 63 in each pin hole forming unit 6 extends outward to drive the active slider 61 to move toward the forming module 5, thereby driving each core rod 62 to be inserted into a corresponding through hole 643.

[0029] During the movement of the moving module 1, the traction rod 82 in the side wall forming unit 8 will also move synchronously, thereby forcing the passive slider 81 to move towards the forming module 5 until the forming arc surface 813 is located to the right of the forming module 5 and is a certain distance away from the right outer wall of the forming module 5.

[0030] Subsequently, the molten material enters the molding module 5 and the waist-shaped cavity 11 through the gate in the feed plate 3 and the sprue in the moving module 1. After cooling, it forms the oxygen cylinder shell (existing technology). Two ear plates are formed between the two second notch slots 642 on the ear block 64 in each pin hole forming unit 6 and the two first notch slots 13 on the same side. Each core rod 62 will form a pin hole on the corresponding two ear plates.

[0031] After molding is completed, the extension end of the cylinder 63 in each pin hole molding unit 6 is first driven to retract inward to drive each core rod 62 to move to the left and reset. Then, the moving module 1 is driven to move forward to leave the positioning module 2 by means of the action mechanism. Then, the passive slider 81 is driven to move to the right and reset in the same way. Finally, the molded oxygen cylinder shell is pushed forward by the ejection mechanism located between the base plate 4 and the positioning module 2 (existing technology).

[0032] This invention can form the pin holes in each ear plate at the same time during the molding process of the oxygen cylinder shell, thus eliminating the need to drill holes separately after demolding. This avoids repeated feeding and unloading of the oxygen cylinder shell, thereby saving time and labor. It also simplifies the production steps and improves production efficiency. In addition, it ensures the processing accuracy of the pin holes.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A molding die for an oxygen cylinder shell, comprising a moving module and a positioning module respectively arranged front to back and cooperating with each other, a feeding plate fixed to the front side of the moving module, a base plate fixed to the rear side of the positioning module, and a molding module fixed to the front side of the positioning module, characterized in that: Two pin hole forming units are also provided between the moving module and the positioning module. Each pin hole forming unit includes an active slider that is movably connected to the front of the positioning module to enable left and right translation and is located on the left side of the forming module; multiple core rods that are horizontally fixed on the active slider and face the outer wall of the forming module; a hydraulic cylinder that is fixed on the outer wall of the left side of the positioning module; and an ear block that is embedded in the rear of the moving module and cooperates with each core rod. The telescopic end of the hydraulic cylinder is horizontally set to the right and fixed on the active slider. The rear outer wall of the moving module is provided with a waist-shaped cavity that cooperates with the forming module. The upper and lower edges of the opening of the waist-shaped cavity are provided with symmetrically distributed installation notches. The ear blocks in the two pin hole forming units are respectively embedded and fixed in two mounting notches. Each ear block has a connecting arc surface on the outer wall facing the waist-shaped cavity that matches the inner wall of the waist-shaped cavity. On the bottom surface of each mounting notch, two first notch slots are respectively provided on the side edge facing the waist-shaped cavity. Correspondingly, two second notch slots are respectively provided on the connecting arc surface of each ear block. The two second notch slots on each ear block are respectively connected to the two first notch slots on the same side.

2. The molding die for an oxygen cylinder outer shell according to claim 1, characterized in that, Multiple through holes are provided between the left and right outer walls of each ear block, passing through each second notch. The number of through holes is equal to the number of core rods, and the position of each through hole corresponds to the position of a core rod.

3. The molding die for an oxygen cylinder outer shell according to claim 1, characterized in that, An installation groove is provided between the outer walls of the left and right sides of the middle part of the molding module, and a core block is also embedded and fixed in the installation groove.

4. The molding die for an oxygen cylinder outer shell according to claim 1, characterized in that, On the outer left side of the root of the molding module, two symmetrically arranged triangular blocks are formed outward. Correspondingly, two triangular notches are opened on the left edge of the opening of the waist-shaped cavity, which respectively cooperate with the two triangular blocks.

5. The molding die for an oxygen cylinder outer shell according to claim 1, characterized in that, A sidewall forming unit is also provided between the moving module and the positioning module. The sidewall forming unit includes a passive slider that is movably connected to the front of the positioning module to have left and right translation function and is located on the left side of the forming module, and a traction rod that is obliquely inserted into the passive slider. The front end of the traction rod is fixed to the moving module.

6. The molding die for an oxygen cylinder outer shell according to claim 3, characterized in that, On the outer wall of the molding module facing the moving module, a first circular cavity is provided below the mounting groove. A concentric protrusion is formed outward from the center of the bottom surface of the first circular cavity. A molding cover is also fitted and fixed outside the protrusion. A protrusion is formed outward from the center of the outer wall of the end of the molding cover.

7. The molding die for an oxygen cylinder outer shell according to claim 6, characterized in that, The bottom surface of the waist-shaped concave cavity is provided with a second circular recessed cavity that cooperates with the end of the molded cover, and the center of the bottom surface of the second circular recessed cavity is provided with a countersunk hole that cooperates with the protrusion.

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