Injection mold for rubber O-shaped ring processing

Abstract

The utility model provides an injection mold for processing a rubber O-shaped ring, which relates to the technical field of rubber O-shaped ring processing, and comprises a lower mold plate, an upper mold plate is arranged on the lower mold plate, a circular groove is formed in the lower mold plate, a circular block is fixedly connected onto the upper mold plate, an injection molding groove is formed in the lower mold plate, and the lower mold plate is fixedly connected with the circular block. An injection molding groove is formed in the lower mold plate, an injection molding hole is formed in the lower mold plate and communicates with the injection molding groove, a discharging structure is arranged on the lower mold plate and mainly composed of two clamping grooves, the two clamping grooves are formed in the inner wall of the injection molding groove correspondingly, two clamping blocks are arranged on the round block, a sliding groove is formed in the round block, and the sliding groove is communicated with the clamping blocks. The demoulding device solves the problems that the demoulding operation is usually carried out by manually digging the processed O-shaped ring at present or by using a driving mechanism to eject the O-shaped ring, the manual digging operation is tedious, the risk of scalding is caused, and the driving mechanism to eject the O-shaped ring can cause energy consumption and waste.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber O-ring processing, in particular to an injection mold for processing rubber O-rings. Background Art

[0002] Sealing rings are generally made of nitrile rubber, natural rubber, EPDM rubber, etc. by injection molding. They have a wide range of applications, involving technical fields such as mechanical seals, chemical equipment, and electrical appliances. They perform static or dynamic sealing on various fluids such as oil, water, air or gas. Existing sealing rings are usually O-type, which is a ring structure. The sealing ring is mainly formed by upper and lower mold injection molding. The processing process generally includes: the lower mold and the upper mold are fitted together, raw materials are added to the cavity formed by the lower mold and the upper mold, the raw materials are heated and molded, and after the molding is completed, the upper mold and the lower mold are separated. The formed sealing ring is fixed in the inner cavity of the lower mold, and finally the sealing ring in the lower mold is removed manually or by a discharge structure to complete the processing of the sealing ring.

[0003] When using the current injection molds for rubber O-ring processing, workers often find that the processed O-rings are usually removed manually or demolded using a drive mechanism. Manual removal is not only cumbersome and poses a risk of burns, but drive mechanism ejection also consumes and wastes energy. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides an injection mold for processing rubber O-rings.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an injection mold for processing rubber O-rings, comprising a lower template, an upper template is arranged on the lower template, a circular groove is opened on the lower template, a round block is fixedly connected to the upper template, an injection groove is opened on the lower template, an injection hole is opened on the lower template, the injection hole is connected to the injection groove, and a discharge structure is provided on the lower template, the discharge structure is mainly composed of two card slots, the two card slots are respectively opened on the inner wall of the injection groove, and two card blocks are provided on the round block.

[0006] The effect achieved by the above components is: the round block is clamped in the round groove, so that the lower template and the upper template are fitted together, and injection is performed into the injection groove through the injection hole. After the raw material is formed, the upper template is removed and the O-ring is taken out. During injection molding, the two clamping blocks are clamped into the corresponding slots. The formed O-ring is above the clamping blocks. Therefore, when the upper template is removed upwards, the two clamping blocks will drive the O-ring to move out of the injection groove, and there is no need for manual digging and additional drive lifting by the staff, thereby avoiding the current situation where the O-rings completed by processing are usually manually picked out or demolded by using a drive mechanism to push them out. The manual removal is not only cumbersome and has the risk of burns, but the drive mechanism will cause energy consumption and waste.

[0007] Preferably, a sliding groove is provided on the round block, and the sliding groove is slidably connected to the two clamping blocks.

[0008] The effect achieved by the above components is: during injection molding, the blocks are slid outward to make the blocks fit into the slots. When the blocks remove the O-rings, the two blocks are slid inward to release the limit on the O-rings, and the O-rings can be removed.

[0009] Preferably, a bidirectional threaded rod is threadedly inserted into the two clamping blocks, and the two sections of threads on the bidirectional threaded rod are in opposite directions.

[0010] The effect achieved by the above components is that since the block slides in a limited position in the slide groove, rotating the bidirectional threaded rod can drive the two blocks to move closer to or away from each other synchronously, making the position of the block more stable.

[0011] Preferably, an equipment slot is provided in the slide slot, a second bevel gear is rotatably connected to the equipment slot, a first bevel gear is meshedly connected to the second bevel gear, and the first bevel gear is fixedly connected to the bidirectional threaded rod.

[0012] The effect achieved by the above components is: by rotating the second bevel gear, the second bevel gear can drive the first bevel gear to rotate, and then drive the bidirectional threaded rod to rotate.

[0013] Preferably, a motor is fixedly connected to the upper template, and an output shaft of the motor is fixedly connected to the second bevel gear.

[0014] The effects achieved by the above components are: when the motor is started, the output shaft of the motor drives the second bevel gear to rotate, making the operation more convenient.

[0015] Preferably, the lower template is provided with a leak-proof structure, which is mainly composed of a rubber ring. The rubber ring is fixedly connected to the lower template, and an annular groove is provided on the upper template.

[0016] The effect achieved by the above components is that when the lower template and the upper template are fitted together, the rubber ring is stuck in the ring groove, which can prevent leakage from the connection between the lower template and the upper template during injection molding.

[0017] Preferably, four limiting columns are fixedly connected to the lower template, and four limiting holes are opened on the upper template.

[0018] The effect achieved by the above components is: when connecting the lower template and the upper template, the tips of the four limit columns can guide the limit columns, so that the limit columns are respectively inserted into the corresponding limit holes, making the connection between the lower template and the upper template more stable and preventing deviation.

[0019] Preferably, round buttons are fixedly connected to both sides of the lower template and the upper template, and the two round buttons are rotatably connected to limit blocks.

[0020] The effect achieved by the above components is: rotating the two limit blocks so that the two limit blocks are stuck on the two round buttons on both sides of the upper template, which can further improve the stability of the connection between the lower template and the upper template.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are that, in the present invention, by setting a discharge structure, the two card blocks are stuck into the corresponding card slots during injection molding, and the formed O-ring is above the card blocks. Therefore, when the upper template is removed upwards, the two card blocks will drive the O-ring to move out of the injection groove, without the need for manual digging and additional driving and lifting by the staff. During injection molding, the card blocks are slid outwards so that the card blocks are stuck into the card slots. When the card blocks remove the O-ring, the two card blocks are slid inwards to release the limit on the O-ring, and the O-ring can be removed. Since the card blocks are limited in the slide groove The two blocks slide in place, so rotating the bidirectional threaded rod can drive the two blocks to move closer to or away from each other synchronously, making the position of the blocks more stable. By rotating the second bevel gear, the second bevel gear can drive the first bevel gear to rotate, and then drive the bidirectional threaded rod to rotate. The motor is started, and the output shaft of the motor drives the second bevel gear to rotate, making the operation more convenient, thereby avoiding the current situation that the O-rings completed by processing are usually manually picked out, or demoulded by using a driving mechanism to eject them. The manual removal is not only cumbersome and has the risk of burns, but the ejection of the driving mechanism will cause energy consumption and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention provides a schematic diagram of the three-dimensional structure of an injection mold for processing a rubber O-ring;

[0023] Figure 2 This is a partial schematic diagram of a discharge structure of an injection mold for processing rubber O-rings proposed in the utility model;

[0024] Figure 3This is a partial schematic diagram of a leak-proof structure of an injection mold for processing a rubber O-ring proposed in the utility model;

[0025] Figure 4 This utility model proposes an injection mold for processing rubber O-rings Figure 3 Enlarged view of part A.

[0026] Legend: 1. Lower template; 2. Upper template; 3. Injection groove; 4. Injection hole; 5. Discharge structure; 51. Slot; 52. Block; 53. Slide; 54. Equipment slot; 55. Bidirectional threaded rod; 56. First bevel gear; 57. Second bevel gear; 58. Motor; 6. Leak-proof structure; 61. Limiting column; 62. Limiting hole; 63. Rubber ring; 64. Ring groove; 65. Round button; 66. Limiting block; 7. Round block; 8. Round groove. DETAILED DESCRIPTION

[0027] Example 1, as Figure 1 As shown, an injection mold for processing rubber O-rings includes a lower template 1, an upper template 2 is provided on the lower template 1, a circular groove 8 is opened on the lower template 1, a round block 7 is fixedly connected to the upper template 2, an injection groove 3 is opened on the lower template 1, and an injection hole 4 is opened on the lower template 1, and the injection hole 4 is connected to the injection groove 3.

[0028] Reference Figure 1-4, a discharge structure 5 is provided on the lower template 1, and the discharge structure 5 is mainly composed of two card slots 51, and the two card slots 51 are respectively opened on the inner wall of the injection groove 3, and two card blocks 52 are provided on the round block 7. The round block 7 is clamped in the round groove 8, so that the lower template 1 and the upper template 2 are fitted together, and injection molding is performed into the injection groove 3 through the injection hole 4. After the raw material is formed, the upper template 2 is removed, and the O-ring is taken out. During injection molding, the two card blocks 52 are clamped into the corresponding card slots 51. The formed O-ring is above the card block 52, so the upper template 2 is removed upward. When the template 2 is pressed, the two clamping blocks 52 will drive the O-ring to move out of the injection groove 3, without the need for manual digging and additional driving to lift it, thus avoiding the current situation that the O-rings completed by the processing are usually manually picked out, or the demoulding operation is carried out by using a driving mechanism to push them out. The manual digging is not only cumbersome but also has the risk of burns. The driving mechanism will cause energy consumption and waste. A sliding groove 53 is provided on the round block 7. The sliding groove 53 is slidably connected with the two clamping blocks 52. During injection molding, each clamping block 52 is slid outward to make The block 52 is inserted into the card slot 51. When the block 52 removes the O-ring, the two blocks 52 are slid inward to release the limit of the O-ring, and the O-ring can be removed. A bidirectional threaded rod 55 is inserted into the two blocks 52. The two sections of the thread on the bidirectional threaded rod 55 are in opposite directions. Since the block 52 is limited and slides in the chute 53, the bidirectional threaded rod 55 can be rotated to drive the two blocks 52 to move closer to or away from each other synchronously, making the position of the block 52 more stable. The chute 53 is provided with a device slot 54. A second bevel gear 57 is rotatably connected in the spare groove 54, and a first bevel gear 56 is meshed with the second bevel gear 57. The first bevel gear 56 is fixedly connected to the bidirectional threaded rod 55. By rotating the second bevel gear 57, the second bevel gear 57 can drive the first bevel gear 56 to rotate, and then drive the bidirectional threaded rod 55 to rotate. A motor 58 is fixedly connected to the upper template 2, and the output shaft of the motor 58 is fixedly connected to the second bevel gear 57. When the motor 58 is started, the output shaft of the motor 58 drives the second bevel gear 57 to rotate, making operation more convenient.

[0029] Reference Figure 1 and Figure 3, a leak-proof structure 6 is provided on the lower template 1, and the leak-proof structure 6 is mainly composed of a rubber ring 63, which is fixedly connected to the lower template 1. A ring groove 64 is provided on the upper template 2. When the lower template 1 and the upper template 2 are fitted together, the rubber ring 63 is clamped into the ring groove 64 to prevent leakage from the connection between the lower template 1 and the upper template 2 during injection molding. Four limiting columns 61 are fixedly connected to the lower template 1, and four limiting holes 62 are provided on the upper template 2. When the lower template 1 and the upper template 2 are connected, the four limiting holes 62 are provided. The tip of the positioning post 61 can guide the limiting post 61 so that the limiting post 61 is inserted into the corresponding limiting hole 62 respectively, so that the connection between the lower template 1 and the upper template 2 is more stable to prevent displacement. Round buttons 65 are fixedly connected on both sides of the lower template 1 and the upper template 2 respectively. The two round buttons 65 are rotatably connected to the limiting blocks 66. The two limiting blocks 66 are rotated so that the two limiting blocks 66 are stuck on the two round buttons 65 on both sides of the upper template 2, which can further improve the stability of the connection between the lower template 1 and the upper template 2.

[0030] Working principle: the round block 7 is clamped in the round groove 8, so that the lower template 1 and the upper template 2 are fitted together, and the injection molding is carried out into the injection molding groove 3 through the injection molding hole 4. After the raw material is formed, the upper template 2 is removed, and then the O-ring is taken out. During injection molding, the two clamping blocks 52 are clamped into the corresponding clamping groove 51. The formed O-ring is above the clamping blocks 52. Therefore, when the upper template 2 is removed upwards, the two clamping blocks 52 will drive the O-ring to move out of the injection molding groove 3, without the need for manual digging and additional driving to lift it, thereby avoiding The O-rings are usually removed manually or by using a driving mechanism to eject them for demoulding. However, manual removal is not only cumbersome but also carries the risk of burns. The ejection of the driving mechanism causes energy consumption and waste. During injection molding, the two clamping blocks 52 are slid outward so that the clamping blocks 52 are inserted into the clamping slots 51. When the clamping blocks 52 remove the O-rings, the two clamping blocks 52 are slid inward to release the limit on the O-rings, and the O-rings can be removed. The two limit slides in the groove 53, so rotating the bidirectional threaded rod 55 can drive the two blocks 52 to move closer to or away from each other synchronously, making the position of the block 52 more stable. By rotating the second bevel gear 57, the second bevel gear 57 can drive the first bevel gear 56 to rotate, thereby driving the bidirectional threaded rod 55 to rotate, starting the motor 58, and the output shaft of the motor 58 drives the second bevel gear 57 to rotate, making the operation more convenient. When the lower template 1 and the upper template 2 are fitted together, the rubber ring 63 is clamped into the annular groove 64 to prevent leakage from the connection between the lower template 1 and the upper template 2 during injection molding. When connecting the lower template 1 and the upper template 2, the tips of the four limit columns 61 can guide the limit columns 61 so that the limit columns 61 are respectively inserted into the corresponding limit holes 62, making the connection between the lower template 1 and the upper template 2 more stable and preventing deviation. By rotating the two limit blocks 66, the two limit blocks 66 are clamped on the two round buttons 65 on both sides of the upper template 2, which can further improve the stability of the connection between the lower template 1 and the upper template 2.

[0031] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An injection mold for processing a rubber O-ring, comprising a lower mold plate (1), characterized in that: An upper template (2) is provided on the lower template (1), a circular groove (8) is provided on the lower template (1), a round block (7) is fixedly connected to the upper template (2), an injection groove (3) is provided on the lower template (1), an injection hole (4) is provided on the lower template (1), the injection hole (4) is connected to the injection groove (3), a discharge structure (5) is provided on the lower template (1), the discharge structure (5) mainly consists of two card grooves (51), the two card grooves (51) are respectively provided on the inner wall of the injection groove (3), and two card blocks (52) are provided on the round block (7).

2. The injection mold for processing a rubber O-ring according to claim 1, characterized in that: A sliding groove (53) is provided on the circular block (7), and the sliding groove (53) is slidably connected to the two clamping blocks (52).

3. The injection mold for processing a rubber O-ring according to claim 2, characterized in that: A bidirectional threaded rod (55) is threadedly inserted into the two clamping blocks (52) and the two sections of thread on the bidirectional threaded rod (55) are in opposite directions.

4. The injection mold for processing a rubber O-ring according to claim 3, characterized in that: An equipment slot (54) is provided in the slide slot (53), a second bevel gear (57) is rotatably connected to the equipment slot (54), a first bevel gear (56) is meshedly connected to the second bevel gear (57), and the first bevel gear (56) is fixedly connected to the bidirectional threaded rod (55).

5. The injection mold for processing a rubber O-ring according to claim 4, characterized in that: A motor (58) is fixedly connected to the upper template (2), and an output shaft of the motor (58) is fixedly connected to the second bevel gear (57).

6. The injection mold for processing a rubber O-ring according to claim 5, characterized in that: The lower template (1) is provided with a leak-proof structure (6), which is mainly composed of a rubber ring (63). The rubber ring (63) is fixedly connected to the lower template (1), and an annular groove (64) is provided on the upper template (2).

7. The injection mold for processing a rubber O-ring according to claim 6, characterized in that: Four limiting columns (61) are fixedly connected to the lower template (1), and four limiting holes (62) are opened on the upper template (2).

8. The injection mold for processing a rubber O-ring according to claim 7, characterized in that: Round buttons (65) are fixedly connected to both sides of the lower template (1) and the upper template (2), and the two round buttons (65) are rotatably connected to limit blocks (66).

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