Silicone rubber sealing ring extrusion die

Abstract

The utility model relates to the field of rubber sealing ring processing, and discloses a silicone rubber sealing ring extrusion die, which comprises a bottom plate, the top end of the outer wall of the bottom plate is fixedly connected with four groups of fixing frames, the upper ends of the inner side walls of the four groups of fixing frames are fixedly connected with a lower die, and the surfaces of the two sides of the bottom plate are fixedly connected with elastic telescopic rods. The top ends of the outer walls of the two sets of elastic telescopic rods are fixedly connected with an upper die, the outer walls of the two sides of the upper die are both fixedly connected with positioning blocks, the inner wall of the sliding seat is elastically connected with a wedge block through a limiting spring, and the tail end of the wedge block is fixedly connected with a traction rope. According to the silicone rubber sealing ring demolding device, through linkage of the wedge block and the demolding rod, a cooled and formed silicone rubber sealing ring can be automatically ejected out and demolded, the automatic demolding mode is simple and convenient to operate, the production efficiency is greatly improved, and meanwhile, the wedge block can be reset in time after demolding is completed through the design of the pulling rope, so that preparation is made for next-time production.

Description

Technical Field

[0001] The utility model relates to the field of silicone rubber sealing ring processing, in particular to a silicone rubber sealing ring extrusion die. Background Art

[0002] Silicone rubber sealing ring extrusion mold is a kind of equipment used to produce silicone rubber sealing rings, which mainly processes silicone rubber materials into sealing rings of various shapes through the extrusion process.

[0003] In the modern industrial field, silicone rubber sealing rings are widely used in many industries such as machinery, electronics, and chemicals due to their excellent sealing performance, high temperature resistance, and corrosion resistance. In order to meet the demand for silicone rubber sealing rings in different fields, efficient and high-quality production methods are essential.

[0004] At present, the existing silicone rubber sealing ring extrusion mold has some shortcomings: on the one hand, in the demolding process, traditional molds often require complicated operations to remove the molded sealing ring, which is not only time-consuming and labor-intensive, but may also cause damage to the sealing ring. On the other hand, the heat dissipation effect of the existing mold is poor, resulting in a long cooling time for the sealing ring and low production efficiency. Relying on natural heat dissipation cannot meet the needs of rapid production. Therefore, a silicone rubber sealing ring extrusion mold is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a silicone rubber sealing ring extrusion mold, which aims to improve the problem in the existing technology that traditional molds often require complicated operations to remove the molded sealing ring, which is not only time-consuming and labor-intensive, but may also cause damage to the sealing ring.

[0006] In order to achieve the above-mentioned object, the utility model adopts the following technical solution: a silicone rubber sealing ring extrusion mold, comprising a bottom plate, four groups of fixing frames are fixedly connected to the top end of the outer wall of the bottom plate, the upper ends of the inner side walls of the four groups of fixing frames are fixedly connected to the lower mold, the surfaces on both sides of the bottom plate are fixedly connected to elastic telescopic rods, the top ends of the outer walls of the two groups of elastic telescopic rods are fixedly connected to the upper mold, the outer walls on both sides of the upper mold are fixedly connected to positioning blocks, the inner side walls of the four groups of fixing frames are provided with demoulding components, and the demoulding components include sliding seats;

[0007] The top end of the outer wall of the sliding seat is fixedly connected with four groups of demoulding rods, the inner wall of the sliding seat is elastically connected with a wedge block through a limit spring, and the end of the wedge block is fixedly connected with a traction rope.

[0008] As a further description of the above technical solution:

[0009] Cavities are provided on both sides of the lower mold, a plurality of penetrating heat dissipation holes are provided on the surface of the lower mold, and a circulation pipe is penetrated and fixedly connected to the inner wall of the lower mold.

[0010] As a further description of the above technical solution:

[0011] The inner wall of the sliding seat is rotatably connected to a guide wheel, and the outer wall of the guide wheel is in contact with the surface of the traction rope.

[0012] As a further description of the above technical solution:

[0013] The sliding seat is slidably connected to the bottom ends of the inner side walls of the four groups of fixing frames, and the outer walls of the bottom ends of the two groups of positioning blocks are in contact with the outer walls of the wedge blocks.

[0014] As a further description of the above technical solution:

[0015] The bottom end of the outer wall of the sliding seat contacts the surface of the bottom plate, and the end of the traction rope away from the wedge block is fixedly connected to the surface of the top end of the bottom plate.

[0016] As a further description of the above technical solution:

[0017] The surface of the lower mold is provided with four groups of mold grooves, and the demoulding rod passes through and is slidably connected to the inner wall of the mold groove of the lower mold.

[0018] As a further description of the above technical solution:

[0019] The wedge block is slidably connected to the inner wall of the sliding seat, and the traction rope passes through and is slidably connected to the inner wall of the sliding seat.

[0020] As a further description of the above technical solution:

[0021] One end of the limit spring is fixedly connected to the outer wall of the wedge block, and the other end of the limit spring is fixedly connected to the inner wall of the sliding seat.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, when rising, the cooled and formed silicone rubber sealing ring can be automatically ejected from the mold through the linkage of the wedge block and the demoulding rod. This automatic demoulding method is not only simple and convenient to operate, but also greatly improves production efficiency. At the same time, the design of the traction rope can reset the wedge block in time after the demoulding is completed, so as to prepare for the next production.

[0024] 2. In the present invention, multiple groups of heat dissipation holes on the surface of the lower mold and the circulation pipe coiled inside the lower mold enable the cooling water to fully ventilate and dissipate heat to the lower mold through external circulation equipment. This design greatly speeds up the cooling and molding process of the silicone rubber sealing ring, increases production speed, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic diagram of the overall three-dimensional structure of a silicone rubber sealing ring extrusion die proposed in the present invention;

[0026] Figure 2 This is a partial cross-sectional structural diagram of the bottom plate and sliding seat of a silicone rubber sealing ring extrusion die proposed in the utility model;

[0027] Figure 3 The utility model provides a schematic diagram of the partial cross-sectional structure of the lower die of a silicone rubber sealing ring extrusion die.

[0028] Legend:

[0029] 1. Base plate; 2. Fixed frame; 3. Lower mold; 4. Elastic telescopic rod; 5. Upper mold; 6. Positioning block; 7. Demolding assembly; 71. Sliding seat; 72. Demolding rod; 73. Limit spring; 74. Wedge block; 75. Traction rope; 76. Guide wheel; 8. Circulation pipe; 9. Heat dissipation hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1 - Figure 3 The utility model provides an embodiment of a silicone rubber sealing ring extrusion mold, comprising a base plate 1, the top end of the outer wall of the base plate 1 is fixedly connected with four groups of fixing frames 2, the upper ends of the inner side walls of the four groups of fixing frames 2 are fixedly connected with a lower mold 3, and the four groups of fixing frames 2 are in an L-shape. The position of the fixing frames 2 can be supported and fixed by the four groups of L-shapes. At the same time, the fixation of the four groups of fixing frames 2 can guide the rising position of the sliding seat 71 so that it can only move up and down in a straight line. The surfaces on both sides of the base plate 1 are fixedly connected with elastic telescopic rods 4, and the top ends of the outer walls of the two groups of elastic telescopic rods 4 are fixedly connected with an upper mold 5. The elastic telescopic rods 4 and the upper mold 5 are both existing technologies. By providing an inner mold groove that fits the silicone rubber sealing ring on the surface of the lower mold 3 at the bottom end of the upper mold 5, the silicone rubber sealing ring can be molded by matching the upper mold 5 with the lower mold 3.

[0032] Reference Figure 1 and Figure 2The outer walls of both sides of the upper mold 5 are fixedly connected with positioning blocks 6, and the inner side walls of the four groups of fixing frames 2 are provided with demoulding components 7. The demoulding components 7 include sliding seats 71, which are slidably connected to the bottom ends of the inner side walls of the four groups of fixing frames 2, and the sliding seats 71 can be guided to the rising position through the four groups of fixing frames 2 so that they can only move up and down in a straight line. The outer walls of the bottom ends of the two groups of positioning blocks 6 contact the outer walls of the wedge blocks 74, and the contact between the two can make the upper mold 5 to move down synchronously when it descends, so that the positioning blocks 6 can squeeze the arc surface of the top of the wedge blocks 74 to make the wedge blocks 74 move on the inner wall of the sliding seats 71 until they pass through the wedge blocks 74. At the same time, when the upper mold 5 rises, the side walls of its bottom end will contact the bottom ends of the outer walls of the wedge blocks 74, so that the wedge blocks 74 can be driven to move upward synchronously together with the sliding seats 71, so that the silicon sealing ring cooled and formed in the lower mold 3 can be ejected and automatically demoulded by the demoulding rod 72.

[0033] Reference Figure 2 The top of the outer wall of the sliding seat 71 is fixedly connected to the guide wheel 76, and the outer wall of the guide wheel 76 contacts the surface of the traction rope 75. The guide wheel 76 can guide the position of the traction rope 75, thereby preventing the traction rope 75 from wearing the wedge 74 inside the sliding seat 71 when pulling the wedge 74. The top of the outer wall of the sliding seat 71 is fixedly connected to four sets of ejection rods 72. The surface of the lower mold 3 is provided with four sets of mold grooves. The ejection rods 72 pass through and are slidably connected to the inner wall of the mold groove of the lower mold 3. The top of the ejection rod 72 is provided with three sets of ejector pins that fit into the inner mold groove of the lower mold 3, so that the internal cooled and molded silicone rubber sealing ring can be automatically ejected outwards by the ejection rod 72 following the movement of the sliding seat 71. The inner wall of the sliding seat 71 is elastically connected to When locking sill 75 and locking sill 77 are positioned between locking sill 74 and the frame 71, the locking sill 73 is located in the state that stretches out guide pinion 72, and lock pin 71 is in the state that stretches out guide pinion 72.

[0034] Reference Figure 3, cavities are provided on both sides of the lower mold 3. By providing cavities on both sides, the wall thickness of the position where the inner mold core forms the silicone rubber ring is very small, so it can be quickly cooled down by an external fan, so that the internal silicone rubber ring can be quickly formed. The surface of the lower mold 3 is provided with multiple groups of penetrating heat dissipation holes 9. By providing multiple groups of penetrating heat dissipation holes 9 on the surface of the lower mold 3, the external air can pass through the inside of the heat dissipation holes 9, thereby fully dissipating the heat of the silicone rubber ring inside the lower mold 3. The inner wall of the lower mold 3 is penetrated and fixedly connected with a circulation pipe 8. The circulation pipe 8 is coiled inside the lower mold 3. By connecting external circulation equipment on both sides, the cooling water can pass through the circulation pipe 8 to fully ventilate and dissipate heat at the lower mold 3, thereby accelerating the cooling and molding of the internal silicone rubber sealing ring.

[0035] Working principle: When the upper mold 5 descends, the positioning block 6 will be driven to descend synchronously. The positioning block 6 squeezes the arc surface of the top of the wedge block 74, so that the wedge block 74 moves on the inner wall of the sliding seat 71, and the limit spring 73 is elastically compressed until the positioning block 6 completely passes through the wedge block 74. The wedge block 74 will be automatically reset by the elastic action of the limit spring 73, so that the bottom end of the upper mold 5 is opened to fit the inner mold groove of the silicone rubber sealing ring on the surface of the lower mold 3. The silicone rubber sealing ring is formed through the cooperation between the upper mold 5 and the lower mold 3.

[0036] When the upper mold 5 rises, the side wall of its bottom end will contact the bottom end of the outer wall of the wedge block 74, thereby driving the wedge block 74 and the sliding seat 71 to move upward synchronously, and the silicone sealing ring cooled and formed in the lower mold 3 is ejected and automatically demolded by the demolding rod 72. When the demolding of the silicone rubber sealing ring is completed, the traction rope 75 will pull the wedge block 74 to move on the inner wall of the sliding seat 71, thereby eliminating the contact with the positioning block 6, so that the silicone rubber sealing ring can be quickly demolded.

[0037] Cavities are provided on both sides of the lower mold 3, so that the wall thickness of the inner mold core at the position where the silicone rubber ring is formed is very small. It can be quickly cooled down with an external fan, and the internal silicone rubber ring can be quickly formed. The surface of the lower mold 3 is provided with multiple groups of penetrating heat dissipation holes 9. The external air can pass through the heat dissipation holes 9 to fully dissipate the heat of the silicone rubber ring inside the lower mold 3. The circulation pipe 8 is coiled inside the lower mold 3. By connecting external circulation equipment on both sides of it, the cooling water passes through the circulation pipe 8 to fully ventilate and dissipate heat at the lower mold 3, thereby accelerating the cooling and molding of the internal silicone rubber sealing ring.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silicone rubber sealing ring extrusion die, comprising a bottom plate (1), characterized in that: The top end of the outer wall of the bottom plate (1) is fixedly connected to four groups of fixing frames (2), the upper ends of the inner side walls of the four groups of fixing frames (2) are fixedly connected to the lower mold (3), the surfaces on both sides of the bottom plate (1) are fixedly connected to elastic telescopic rods (4), the top ends of the outer walls of the two groups of elastic telescopic rods (4) are fixedly connected to the upper mold (5), the outer walls on both sides of the upper mold (5) are fixedly connected to positioning blocks (6), and the inner side walls of the four groups of fixing frames (2) are provided with demoulding components (7), and the demoulding components (7) include a sliding seat (71); Four groups of demoulding rods (72) are fixedly connected to the top of the outer wall of the sliding seat (71), and a wedge block (74) is elastically connected to the inner wall of the sliding seat (71) via a limit spring (73). The end of the wedge block (74) is fixedly connected to a traction rope (75).

2. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: Cavities are provided on both sides of the lower mold (3), a plurality of groups of penetrating heat dissipation holes (9) are provided on the surface of the lower mold (3), and a circulation pipe (8) is penetrated and fixedly connected to the inner wall of the lower mold (3).

3. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: The inner wall of the sliding seat (71) is rotatably connected to a guide wheel (76), and the outer wall of the guide wheel (76) is in contact with the surface of the traction rope (75).

4. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: The sliding seat (71) is slidably connected to the bottom ends of the inner side walls of the four sets of fixing frames (2), and the outer walls of the bottom ends of the two sets of positioning blocks (6) are in contact with the outer walls of the wedge blocks (74).

5. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: The bottom end of the outer wall of the sliding seat (71) contacts the surface of the bottom plate (1), and the end of the traction rope (75) away from the wedge block (74) is fixedly connected to the surface of the top end of the bottom plate (1).

6. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: Four groups of mold grooves are provided on the surface of the lower mold (3), and the demoulding rod (72) passes through and is slidably connected to the inner wall of the mold groove of the lower mold (3).

7. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: The wedge block (74) is slidably connected to the inner wall of the sliding seat (71), and the traction rope (75) passes through and is slidably connected to the inner wall of the sliding seat (71).

8. The silicone rubber sealing ring extrusion die according to claim 1, characterized in that: One end of the limit spring (73) is fixedly connected to the outer wall of the wedge block (74), and the other end of the limit spring (73) is fixedly connected to the inner wall of the sliding seat (71).

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