Dustproof sealing ring piece mold

Abstract

The utility model relates to a dustproof sealing ring piece mold. The mold comprises a front mold; a rear mold; the rear mold movable insert is detachably connected with the rear mold; the front mold movable insert is connected with the front mold in a sliding manner, and the front mold, the rear mold, the front mold movable insert and the rear mold movable insert define a cavity for forming a product; a connecting assembly for connecting the front mold movable insert with the front mold is arranged on the front mold; an existing front mold external movable insert is changed into the front mold movable insert arranged in the front mold, so that the front mold movable insert moves for a certain distance along with a product when the product is demolded, the product can be ensured to be left on the rear mold, and at the moment, an ejector pin and the like on the rear mold eject the product out of the rear mold; the front mold movable insert is connected with the front mold in a sliding manner, so that the problem that the service life of the mold is not long due to the fact that a small flat ejector pin behind a product is easy to break when ejected out and a flat ejector pin hole is easy to wear when the product is demolded is solved.

Description

Technical Field

[0001] The present application relates to the technical field of seal production, and in particular to a dustproof seal ring mold. Background Art

[0002] The dust ring is a reciprocating seal installed on the piston rod to prevent external dust from mixing into the hydraulic cylinder. The production of the dust ring requires the manufacturer to set up the corresponding mold according to the dust ring in advance, and then form it through injection molding.

[0003] Reference Figure 1 A dustproof ring is proposed in the related technology, which includes a dustproof ring body and a supporting frame. The supporting frame includes a supporting part and a connecting part. The supporting part and the connecting part are vertically arranged to make the cross-section "L" shaped, and the supporting part is fixedly connected to the outer peripheral side of the dustproof ring body, and the connecting part extends into the dustproof ring body away from the side of the supporting part.

[0004] In order to ensure that the product can stay on the rear mold during demoulding, this type of dust ring is mainly achieved by inverting the product, adding a push ring to the front mold, and setting a flat ejector pin on the rear mold to eject the product. However, this method will cause the following problems: the small flat ejector pin at the back of the product is easy to break when ejecting, and the flat ejector pin hole is easy to wear, resulting in a short mold life. Utility Model Content

[0005] In order to improve the problem that the small flat ejector pin at the back of the product is easy to break when ejecting the product, and the flat ejector pin hole is easy to wear, resulting in a short mold life, the present application provides a dustproof sealing ring mold.

[0006] The present application provides a dustproof sealing ring mold, which adopts the following technical solution:

[0007] A dustproof sealing ring mold, comprising:

[0008] front mold;

[0009] rear mold;

[0010] A rear mold movable insert, detachably connected to the rear mold;

[0011] A front mold movable insert is slidably connected to the front mold, and the front mold, the rear mold, the front mold movable insert and the rear mold movable insert enclose a mold cavity for forming a molded product;

[0012] The front mold is provided with a connecting component for connecting the front mold movable insert and the front mold.

[0013] Furthermore, the connection component includes:

[0014] A fixing screw, wherein a connection hole for the fixing screw to pass through is provided on the front mold, the fixing screw is threadedly connected to the movable insert of the front mold, and the head of the fixing screw can contact the side of the front mold away from the rear mold;

[0015] Return spring, connecting the fixing screw and the front mold.

[0016] Furthermore, the connecting assembly also includes a distance screw, the front mold is provided with a connecting hole for the distance screw to pass through, the distance screw is threadedly connected to the front mold movable insert, and the head of the distance screw is spaced apart from the side of the front mold away from the rear mold.

[0017] Furthermore, a receiving hole for receiving the head of a fixing screw is provided on a side of the front mold facing away from the rear mold.

[0018] Furthermore, a resin shutter is arranged on the movable insert of the front mold, a through hole for the resin shutter to pass through is opened on the front mold, and the resin shutter extends into the through hole at a side away from the rear mold.

[0019] Furthermore, a connecting hole corresponding to the position of the connecting hole is provided on the front mold movable insert, and the inner diameter of the connecting hole is not less than the inner diameter of the connecting hole.

[0020] To sum up, the beneficial technical effect of the present application is as follows: the existing external movable insert of the front mold is replaced with the front mold movable insert set inside the front mold in the present application, so that the front mold movable insert moves a certain distance with the product when the product is demolded, thereby ensuring that the product can remain on the rear mold. At this time, the ejector pins on the rear mold can eject the product from the rear mold. The sliding connection between the front mold movable insert and the front mold can improve the problem of the small flat ejector pin at the back of the product breaking easily when ejecting, and the flat ejector pin hole being easily worn, resulting in a short mold life when the product is demolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a drawing of the related art;

[0022] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0023] : Reference numerals: 100, front mold; 110, front mold movable insert; 111, connecting hole; 120, accommodating hole; 130, connecting hole; 140, spacing hole; 150, connecting hole; 160, through hole; 170, accommodating cavity; 200, rear mold; 210, rear mold movable insert; 300, connecting assembly; 310, fixing screw; 320, return spring; 330, spacing screw; 400, resin shutter; 500, dust ring; 510, supporting part; 520, connecting part. DETAILED DESCRIPTION

[0024] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0025] The present application embodiment discloses a dustproof sealing ring mold. Figure 2 The mold includes a front mold 100, a rear mold 200, a rear mold movable insert 210 and a front mold movable insert 110, and the front mold 100, the rear mold 200, the rear mold movable insert 210 and the front mold movable insert 110 enclose a cavity.

[0026] The rear mold movable insert 210 is detachably connected to the rear mold 200. In this embodiment, the detachable connection between the rear mold movable insert 210 and the rear mold 200 is achieved by screw connection.

[0027] A receiving cavity 170 is provided on one side of the front mold 100 close to the rear mold 200 . The front mold movable insert 110 is placed in the receiving cavity 170 and is slidably connected to the side wall of the receiving cavity 170 . The front mold movable insert 110 is connected to the front mold 100 via a connecting assembly 300 .

[0028] The connecting assembly 300 includes a fixing screw 310, a return spring 320 and a distance screw 330. The front mold 100 is provided with a receiving hole 120 and a connecting hole 130, which are arranged in sequence along the direction close to the rear mold 200, and the two are connected. The diameter of the receiving hole 120 is larger than the diameter of the connecting hole 130. The fixing screw 310 is inserted into the receiving hole 120 and the connecting hole 130, and the fixing screw 310 passes through the connecting hole 130 and is threadedly connected to the front mold movable insert 110. The head of the fixing screw 310 conflicts with the side wall of the receiving hole 120 close to the rear mold 200, so that the receiving hole 120 can accommodate the head of the fixing screw 310, so that the head of the fixing screw 310 is not easy to protrude from the front mold 100 and affect the storage of the front mold 100. The return spring 320 is sleeved on the outside of the fixing screw 310, and one end of the return spring 320 abuts against the side wall of the accommodating hole 120 away from the rear mold 200, and the other end is fixedly connected to the head of the fixing screw 310. Under the elastic force of the return spring 320, the head of the fixing screw 310 is spaced apart from the side wall of the accommodating hole 120 close to the rear mold 200.

[0029] In order to improve the connection stability between the front mold movable insert 110 and the front mold 100, a connecting hole 111 corresponding to the position of the connecting hole 130 is opened on the front mold movable insert 110, and the inner diameter of the connecting hole 111 is not less than the inner diameter of the connecting hole 130. In this embodiment, the connecting hole 111 is larger than the inner diameter of the connecting hole 130.

[0030] The front mold 100 is provided with a distance hole 140 and a connection hole 150, which are arranged in sequence in the direction close to the rear mold 200, and the two are connected. The inner diameter of the distance hole 140 is larger than the inner diameter of the connection hole 150. The distance screw 330 is inserted into the distance hole 140 and the connection hole 150, and the distance screw 330 passes through the connection hole 150 and is threadedly connected to the front mold movable insert 110. The head of the distance screw 330 is located in the distance hole 140, and the head of the distance screw 330 can contact the side wall of the distance hole 140 close to the connection hole 150.

[0031] In order to improve the connection stability between the front mold movable insert 110 and the front mold 100, the front mold movable insert 110 is fixedly connected with a resin shutter 400, and a through hole 160 is opened on the front mold 100 for the resin shutter 400 to pass through, and the resin shutter 400 extends from the side away from the rear mold 200 to the through hole 160.

[0032] The implementation principle of a dustproof sealing ring mold in an embodiment of the present application is as follows: after the injection molding of the product is completed, the front mold movable insert 110 moves a certain distance with the product when the product is demolded so that the product can remain on the rear mold 200. At this time, the return spring 320 is compressed. After the front mold movable insert 110 moves a certain distance, the head of the distance screw 330 contacts the side wall of the distance hole 140 close to the rear mold 200, and the front mold movable insert 110 does not continue to move. Finally, when the rear mold 200 moves to a suitable position, the ejector pin on the rear mold 200 can eject the product from the rear mold 200.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dustproof sealing ring mold, characterized in that: include: front mold (100); rear mold (200); A rear mold movable insert (210) detachably connected to the rear mold (200); A front mold movable insert (110) is slidably connected to the front mold (100), wherein the front mold (100), the rear mold (200), the front mold movable insert (110) and the rear mold movable insert (210) enclose a mold cavity for molding a product; The front mold (100) is provided with a connecting assembly (300) for connecting the front mold movable insert (110) and the front mold (100).

2. A dustproof sealing ring mold according to claim 1, characterized in that: The connection assembly (300) comprises: A fixing screw (310), wherein the front mold (100) is provided with a connection hole (130) for the fixing screw (310) to pass through, the fixing screw (310) is threadedly connected to the front mold movable insert (110), and the head of the fixing screw (310) is capable of abutting against a side of the front mold (100) facing away from the rear mold (200); The return spring (320) connects the fixing screw (310) and the front mold (100).

3. A dustproof sealing ring mold according to claim 2, characterized in that: The connection assembly (300) further comprises a distance screw (330), the front mold (100) is provided with a connection hole (150) for the distance screw (330) to pass through, the distance screw (330) is threadedly connected to the front mold movable insert (110), and the head of the distance screw (330) is spaced apart from a side of the front mold (100) away from the rear mold (200).

4. A dustproof sealing ring mold according to claim 2, characterized in that: A receiving hole (120) for receiving the head of a fixing screw (310) is provided on a side of the front mold (100) facing away from the rear mold (200).

5. A dustproof sealing ring mold according to claim 4, characterized in that: The front mold movable insert (110) is provided with a resin shutter (400), the front mold (100) is provided with a through hole (160) for the resin shutter (400) to pass through, and the resin shutter (400) extends from a side away from the rear mold (200) into the through hole (160).

6. A dustproof sealing ring mold according to claim 2, characterized in that: The front mold movable insert (110) is provided with a communication hole (111) corresponding to the position of the connection hole (130), and the inner diameter of the communication hole (111) is not less than the inner diameter of the connection hole (130).

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