A check valve sealing gasket mold

Abstract

The application discloses a check valve sealing gasket mold, and relates to the field of gasket production.The check valve sealing gasket mold comprises a backing plate, a mold one is placed on the backing plate, a mold two is arranged on the mold one, exhaust holes are arranged on the mold two, injection holes are arranged on one side of the mold one, a positioning mechanism is arranged between the mold one and the mold two, and a contact sealing mechanism is arranged between the mold one and the mold two.When the mold two is inserted into the mold one, the positioning mechanism is used for positioning the position of the mold two.When the mold two is completely inserted into the mold one, the positioning mechanism limits the mold two on the mold one, and the contact sealing mechanism seals the mold one and the mold two, so that the check valve sealing gasket can be conveniently formed, the check valve sealing gasket has higher precision, and the positioning of the mold one and the mold two when the mold one and the mold two are combined together is facilitated.

Description

Technical Field

[0001] This application relates to the field of rubber lining production, and in particular to a rubber-lined mold for a check valve seal. Background Technology

[0002] A check valve is a type of valve whose opening and closing element is a circular valve disc that relies on its own weight and the pressure of the medium to prevent backflow. It belongs to the category of automatic valves and is also known as a non-return valve, one-way valve, reflux valve, or isolation valve. The valve disc movement is divided into lift type and swing type. The lift type check valve is similar in structure to a gate valve, except that it lacks a valve stem to drive the valve disc.

[0003] During the production of check valves, in order to ensure the sealing performance of the check valve, a corresponding sealing lining is usually added to the inner wall of the check valve. The sealing lining comes into contact with the valve disc, thereby playing a sealing role and improving the service life of the check valve.

[0004] The traditional rubber-lined check valve sealing process involves directly applying the sealing rubber to the valve. By utilizing the corrosion-resistant properties of rubber, it covers the metal surface to isolate the corrosive medium from the metal substrate, thereby protecting the metal. However, the precision of the sealing seat is lacking when using this method. Utility Model Content

[0005] The purpose of this application is to address the problem mentioned in the background art regarding the traditional check valve sealing rubber lining process, which involves directly applying sealing rubber to the valve and utilizing the corrosion resistance of rubber to cover the metal surface to isolate the corrosive medium from the metal substrate, thereby protecting the metal. However, this method suffers from a lack of precision in sealing the valve seat during molding. This application provides a check valve sealing rubber lining mold.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution: A check valve sealing lining mold includes a pad, on which a first mold is placed, and a second mold is provided on the first mold. The second mold has an exhaust hole, and an injection hole is provided on one side of the first mold. A positioning mechanism is provided between the first mold and the second mold, and an abutment sealing mechanism is provided between the first mold and the second mold.

[0007] By adopting the above-mentioned technical solution, when mold two is inserted into mold one, the positioning mechanism is used to position mold two. When mold two is fully inserted into mold one, the positioning mechanism restricts mold two onto mold one, while the sealing mechanism seals mold one and mold two. This facilitates the molding of the check valve sealing gasket, resulting in higher precision of the check valve sealing gasket, and also facilitates the positioning of mold one and mold two when they are put together.

[0008] Furthermore, the positioning mechanism includes several positioning rods that are circumferentially distributed and fixed on the mold two, and the mold one has several positioning holes corresponding to the positioning rods. A snap-fit ​​assembly is provided between the positioning rods and the mold one.

[0009] By adopting the above technical solution, the second mold drives the positioning rod to insert into the positioning hole on the first mold. The positioning rod and the positioning hole restrict the first mold and the second mold, thereby facilitating the alignment of the first mold and the second mold.

[0010] Furthermore, the snap-fit ​​assembly includes a snap-fit ​​block disposed on one side of the positioning hole, and the positioning rod has a snap-fit ​​groove corresponding to the snap-fit ​​block.

[0011] By adopting the above technical solution, after the positioning rod is inserted into the positioning hole, the snap-fit ​​block is inserted into the positioning groove on the side of the positioning rod to restrict the positioning rod, thereby making it easy to fix mold one and mold two together stably.

[0012] Furthermore, a support block is provided on one side of the positioning hole, the support block is fixedly connected to the mold, a sliding block is slidably connected to the support block, the snap-fit ​​block is fixedly connected to the sliding block, and an anti-collision spring is provided between the sliding block and the support block, with both ends of the anti-collision spring being fixedly connected to the sliding block and the support block.

[0013] By adopting the above technical solution, the positioning rod abuts against the inclined surface of the snap-fit ​​block, and then, with the support of the abutment spring, the snap-fit ​​block is inserted into the insertion slot, thereby enabling the snap-fit ​​block to be stably inserted into the snap-fit ​​slot.

[0014] Furthermore, a limiting block is rotatably connected to the sliding block, and a limiting groove is formed at the end of the support block away from the locking block.

[0015] By adopting the above technical solution, the limiting block drives the sliding block and the locking block to squeeze the abutting spring. Then, the limiting block is rotated so that it is locked in the limiting groove on the support block, and the sliding block is kept in the state of squeezing the abutting spring. This makes it easy to separate the locking block from the locking groove of the positioning rod and let the positioning rod be pulled out of the positioning groove.

[0016] Furthermore, a positioning cone is fixed to one end of the positioning rod, and the positioning cone corresponds to the positioning hole.

[0017] By adopting the above technical solution, the positioning cone on the positioning rod first enters the positioning hole. Under the restriction of the inclined surface of the positioning cone, the positioning rod is fully inserted into the positioning hole, thus making it easier for the positioning rod to enter the positioning hole.

[0018] Furthermore, the abutment sealing mechanism includes an abutment strip fixed inside the first mold, an abutment groove is provided on the second mold, and several pressure-bearing columns are fixed in the second mold.

[0019] By adopting the above technical solution, after the contact strip enters the contact groove, it seals the contact position of mold one and mold two. At the same time, the pressure column disperses the pressure, thereby limiting it during injection molding, allowing the check valve sealing lining to form a specific shape. Meanwhile, the pressure column allows the stress point to be distributed closer to the lining position.

[0020] Furthermore, the contact strip has rounded corners.

[0021] By adopting the above technical solution, when the contact strip enters the contact groove, the rounded corners on the contact strip guide the contact strip, thereby facilitating the entry of the contact strip into the contact groove.

[0022] In summary, this application includes at least one of the following beneficial effects; 1. In this application, when using the mold to produce a check valve sealing lining, firstly, mold one is placed on a pad, and then mold two is inserted into mold one. When mold two is inserted into mold one, a positioning mechanism is used to position mold two. When mold two is fully inserted into mold one, the positioning mechanism restricts mold two onto mold one, while the sealing mechanism seals mold one and mold two. Then, heated rubber is injected into the space between mold one and mold two through the injection hole. After the rubber cools, mold one and mold two are separated to obtain a check valve sealing lining. This achieves the purpose of facilitating the molding of the check valve sealing gasket, increasing the precision of the check valve sealing gasket, and facilitating the positioning of mold one and mold two when they are put together.

[0023] 2. In this application, when assembling mold one and mold two, the corresponding positions of mold one and mold two are first observed. Then, mold two is inserted into mold one, making mold two roughly aligned with mold one. As mold two approaches mold one, a positioning rod fixed on mold two is inserted into a positioning hole on mold one. The positioning rod and positioning hole position mold one and mold two, making them completely aligned. At the same time, the positioning rod presses against a snap-fit ​​block. The snap-fit ​​block has an inclined surface, which presses against a sliding block. The sliding block slides on the support block and presses against the abutment spring. After the snap-fit ​​groove on the positioning rod aligns with the snap-fit ​​block, the snap-fit ​​block is inserted into the snap-fit ​​groove under the push of the abutment spring, fixing mold one and mold two together. Then, the check valve sealing lining is injection molded. This achieves the purpose of facilitating the alignment of mold one and mold two, reducing the possibility of loosening during injection molding, and improving the molding accuracy of the sealing lining. Attached Figure Description

[0024] Figure 1 This is a first three-dimensional structural schematic diagram of the check valve sealing rubber lining mold in this application; Figure 2 This is a second three-dimensional structural schematic diagram of the check valve sealing rubber lining mold in this application; Figure 3 This is a third-dimensional structural schematic diagram of the check valve sealing lining mold in this application; Figure 4 This application Figure 2 Enlarged diagram of point A in the middle.

[0025] Explanation of reference numerals in the attached figures: 1. Pad; 2. Mold 1; 3. Mold 2; 4. Vent hole; 5. Injection hole; 6. Positioning mechanism; 61. Positioning rod; 62. Positioning hole; 63. Snap-fit ​​assembly; 631. Snap-fit ​​groove; 632. Snap-fit ​​block; 633. Abutment spring; 634. Sliding block; 635. Support block; 636. Limiting block; 637. Limiting groove; 64. Positioning cone; 7. Abutment sealing mechanism; 71. Abutment strip; 72. Abutment groove; 73. Pressure-bearing column. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a check valve sealing lining mold.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A check valve sealing lining mold includes a pad plate 1, a mold 2 placed on the pad plate 1, a mold 3 provided on the mold 2, an exhaust hole 4 on the mold 3, an injection hole 5 on one side of the mold 2, a positioning mechanism 6 between the mold 2 and the mold 3, and an abutment sealing mechanism 7 between the mold 2 and the mold 3.

[0029] When using this mold to produce check valve sealing lining, firstly, mold 1 (2) is placed on pad 1, and then mold 2 (3) is inserted into mold 1 (2). When mold 2 (3) is inserted into mold 1 (2), the positioning mechanism 6 positions mold 2 (3). When mold 2 (3) is fully inserted into mold 1 (2), the positioning mechanism 6 restricts mold 2 (3) onto mold 1 (2), while the sealing mechanism 7 seals mold 1 (2) and mold 2 (3). Then, heated rubber is injected into the space between mold 1 (2) and mold 2 (3) through injection hole 5. After the rubber cools, mold 1 (2) and mold 2 (3) are separated to obtain a check valve sealing lining. By combining mold 1 (2) and mold 2 (3), using the positioning mechanism 6 to position mold 1 (2) and mold 2 (3), and simultaneously sealing mold 1 (2) and mold 2 (3) with the sealing mechanism 7, the check valve sealing gasket lining can be easily formed, resulting in higher precision and easier positioning when mold 1 (2) and mold 2 (3) are combined.

[0030] Reference Figure 2 , Figure 3 and Figure 4 The positioning mechanism 6 includes several positioning rods 61 that are circumferentially distributed and fixed on the mold 2 3. The mold 1 2 has several positioning holes 62 corresponding to the positioning rods 61. A snap-fit ​​assembly 63 is provided between the positioning rods 61 and the mold 1 2.

[0031] In addition, the snap-fit ​​assembly 63 includes a snap-fit ​​block 632 disposed on one side of the positioning hole 62, and the positioning rod 61 is provided with a snap-fit ​​groove 631 corresponding to the snap-fit ​​block 632.

[0032] Furthermore, a support block 635 is provided on one side of the positioning hole 62. The support block 635 is fixedly connected to the mold 2. A sliding block 634 is slidably connected to the support block 635. The snap-fit ​​block 632 is fixedly connected to the sliding block 634. An anti-spring 633 is provided between the sliding block 634 and the support block 635. Both ends of the anti-spring 633 are fixedly connected to the sliding block 634 and the support block 635.

[0033] Furthermore, a limiting block 636 is rotatably connected to the sliding block 634, and a limiting groove 637 is provided at the end of the support block 635 away from the locking block 632.

[0034] When assembling mold 1 (2) and mold 2 (3), first observe the corresponding positions of mold 1 (2) and mold 2 (3). Then, insert mold 2 (3) into mold 1 (2), roughly aligning them. As mold 2 (3) approaches mold 1 (2), insert the positioning rod 61 fixed on mold 2 (3) into the positioning hole 62 on mold 1 (2). Position the mold 1 (2) and mold 2 (3) with the positioning rod 61 and positioning hole 62, ensuring complete alignment. Simultaneously, the positioning rod 61 presses against the locking block 632. The locking block 632 has an inclined surface, allowing it to press against the sliding block 634. The sliding block 634 slides on the support block 635 and presses against the abutment spring 633. After the locking groove 631 on the positioning rod 61 aligns with the locking block 632, the locking block 632 is inserted into the locking groove under the push of the abutment spring 633. In groove 631, mold 1 2 and mold 2 3 are fixed together, and then the check valve sealing lining is injection molded. When it is necessary to separate mold 1 2 and mold 2 3, pull the limiting block 636, so that the limiting block 636 drives the sliding block 634 and the snap-fit ​​block 632 to squeeze the contact spring 633. Then rotate the limiting block 636 so that the limiting block 636 is locked in the limiting groove 637 on the support block 635, so that the sliding block 634 keeps squeezing the contact spring 633, so that the snap-fit ​​block 632 separates from the snap-fit ​​groove 631. Then mold 2 3 is separated from mold 1 2. Mold 1 2 and mold 2 3 are positioned by using the positioning rod 61 and the positioning hole 62, and then the positioning rod 61 is fixed by using the snap-fit ​​block 632, so that mold 1 2 and mold 2 3 can be easily aligned, and the possibility of mold 1 2 and mold 2 3 loosening during injection molding can be reduced.

[0035] Reference Figure 2 and Figure 3 One end of the positioning rod 61 is fixed with a positioning cone 64, which corresponds to the positioning hole 62. When the mold 2 3 moves the positioning rod 61 toward the mold 1 2, the positioning rod 61 on the mold 2 3 is roughly aligned with the positioning hole 62. Then, the positioning cone 64 on the positioning rod 61 first enters the positioning hole 62. Under the constraint of the inclined surface of the positioning cone 64, the positioning rod 61 is fully inserted into the positioning hole 62. By using the positioning cone 64 to guide the positioning rod 61, the positioning rod 61 can enter the positioning hole 62 more easily.

[0036] Reference Figure 2 and Figure 3 The abutment sealing mechanism 7 includes an abutment strip 71 fixed inside the mold 2, an abutment groove 72 is provided on the mold 3, and a plurality of pressure-bearing columns 73 are fixed in the mold 3.

[0037] In addition, the abutment strip 71 has rounded corners.

[0038] After mold 2 3 is inserted into mold 1 2, the abutment strip 71 at the bottom of mold 1 2, guided by the rounded corners, enters the abutment groove 72 on mold 2 3. After the abutment strip 71 enters the abutment groove 72, it seals the contact position between mold 1 2 and mold 2 3, restricting the flow during injection molding and allowing the check valve sealing lining to form a specific shape. At the same time, during injection molding, the pressure column 73 allows the force distribution to be closer to the lining position. By allowing mold 1 2 and mold 2 3 to be closed together, the abutment strip 71 on mold 1 2 enters the abutment groove 72 on mold 2 3, thus facilitating the restriction of mold 1 2 and mold 2 3 and facilitating the production of check valve sealing linings of a specific shape.

[0039] Working principle: When using this mold to produce rubber lining for check valve sealing, first place mold 1 (2) on pad 1 and observe the corresponding positions of mold 1 (2) and mold 2 (3). Then, insert mold 2 (3) into mold 1 (2), roughly aligning them. As mold 2 (3) approaches mold 1 (2), insert the positioning rod 61 fixed on mold 2 (3) into the positioning hole 62 on mold 1 (2). This positioning rod 61 and the positioning hole 62 position mold 1 (2) and mold 2 (3) to ensure complete alignment. Simultaneously, the positioning rod 61 presses against the locking block 632, which has an inclined surface. This causes the locking block 632 to press against the sliding block 634. 634 slides on the support block 635 and presses the abutment spring 633. After the snap-fit ​​groove 631 on the positioning rod 61 is aligned with the snap-fit ​​block 632, the snap-fit ​​block 632 is inserted into the snap-fit ​​groove 631 under the push of the abutment spring 633. The abutment strip 71 at the bottom of mold 1 2 enters the abutment groove 72 on mold 2 3 under the guidance of the rounded corner. After the abutment strip 71 enters the abutment groove 72, it seals the contact position of mold 1 2 and mold 2 3, fixing mold 1 2 and mold 2 3 together. Then, heated rubber is injected into the space between mold 1 2 and mold 2 3 through the injection hole 5. After the rubber cools down, mold 1 2 and mold 2 3 are separated to obtain a check valve sealing lining.

Claims

1. A check valve sealing lining mold, comprising a gasket (1), characterized in that: Mold 1 (2) is placed on the pad (1), and Mold 2 (3) is provided on Mold 1 (2). Mold 2 (3) has an exhaust hole (4). Mold 1 (2) has an injection hole (5) on one side. Mold 1 (2) and Mold 2 (3) are provided with a positioning mechanism (6). Mold 1 (2) and Mold 2 (3) are provided with an abutment sealing mechanism (7).

2. The check valve sealing lining mold according to claim 1, characterized in that: The positioning mechanism (6) includes several positioning rods (61) that are circumferentially distributed and fixed on the mold (3). The mold (2) has several positioning holes (62) corresponding to the positioning rods (61). A snap-fit ​​assembly (63) is provided between the positioning rods (61) and the mold (2).

3. A check valve sealing lining mold according to claim 2, characterized in that: The snap-fit ​​assembly (63) includes a snap-fit ​​block (632) disposed on one side of the positioning hole (62), and the positioning rod (61) is provided with a snap-fit ​​groove (631) corresponding to the snap-fit ​​block (632).

4. A check valve sealing lining mold according to claim 3, characterized in that: A support block (635) is provided on one side of the positioning hole (62). The support block (635) is fixedly connected to the mold (2). A sliding block (634) is slidably connected on the support block (635). The snap-fit ​​block (632) is fixedly connected to the sliding block (634). An anti-spring (633) is provided between the sliding block (634) and the support block (635). Both ends of the anti-spring (633) are fixedly connected to the sliding block (634) and the support block (635).

5. A check valve sealing lining mold according to claim 4, characterized in that: A limiting block (636) is rotatably connected to the sliding block (634), and a limiting groove (637) is provided at the end of the support block (635) away from the snap-fit ​​block (632).

6. A check valve sealing lining mold according to claim 2, characterized in that: One end of the positioning rod (61) is fixed with a positioning cone (64), which corresponds to the positioning hole (62).

7. A check valve sealing lining mold according to claim 1, characterized in that: The contact sealing mechanism (7) includes a contact strip (71) fixed in the mold one (2), a contact groove (72) is provided on the mold two (3), and a number of pressure-bearing columns (73) are fixed in the mold two (3).

8. A check valve sealing lining mold according to claim 7, characterized in that: The abutment strip (71) has rounded corners.

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