A seal and hot runner system

Abstract

The present invention relates to the technical field of hot runners, and provides a seal and a hot runner system, wherein the seal is made of metal material, and the seal comprises: a seal body, which is annular; a first force-bearing portion, which is arranged on the upper annular surface of the seal body and connected to the seal body, and the first force-bearing portion is provided with at least one first U-shaped bevel; a second force-bearing portion, which is arranged on the lower annular surface of the seal body and connected to the seal body, and the second force-bearing portion is provided with at least one second U-shaped bevel; a deformation extrusion portion, which is arranged on the outer annular surface of the seal body and connected to the seal body; a U-shaped deformation groove, which is arranged inside the seal body, and the opening of the U-shaped deformation groove extends to the inner annular surface of the seal body. The seal is made of metal material, which enhances wear resistance, and the first U-shaped bevel and the second U-shaped bevel are arranged to stabilize the deformation direction, and the U-shaped deformation groove is arranged to avoid cross-flow.

Description

Technical Field

[0001] The present invention relates to the technical field of hot runners, and more particularly to a sealing component and a hot runner system. Background Art

[0002] In the hot runner system, the moving part of the cylinder consists of a cylinder body and a piston. The piston is installed in the cylinder. The piston divides the cylinder body into two upper and lower air pressure chambers. Compressed air is connected to the upper and lower air pressure chambers of the cylinder body to drive the piston in the cylinder to achieve reciprocating motion. In order to meet the requirement of no air leakage between the upper and lower air pressure chambers in the cylinder body, it is necessary to install a seal between the upper piston and the lower piston included in the piston. Traditional seals are made of nitrile rubber. The seals will gradually fail due to long-term wear during the reciprocating motion of the piston, which is easy to cause air leakage between the air pressure chambers, resulting in uneven piston movement. Summary of the invention

[0003] The purpose of the present invention is to provide a seal and a hot runner system to solve the technical problem that the seal in the prior art gradually fails due to long-term wear during the reciprocating movement of the piston, which easily causes air cross-talk between the air pressure chambers and causes the piston to move unsmoothly.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] In one aspect, the present invention provides a seal, wherein the seal is made of a metal material and comprises:

[0006] A sealing body, wherein the sealing body is annular;

[0007] A first force-bearing portion, the first force-bearing portion is disposed on the upper annular surface of the sealing body and connected to the sealing body, and the first force-bearing portion is provided with at least one first U-shaped bevel;

[0008] A second force-bearing portion, the second force-bearing portion is disposed on the lower annular surface of the sealing body and connected to the sealing body, and the second force-bearing portion is provided with at least one second U-shaped bevel;

[0009] A deformation extrusion portion, the deformation extrusion portion is arranged on the outer annular surface of the sealing body and connected to the sealing body;

[0010] A U-shaped deformation groove is arranged inside the sealing body, and an opening of the U-shaped deformation groove extends to the inner annular surface of the sealing body.

[0011] According to the sealing member described above, the first U-shaped bevel and the second U-shaped bevel are arranged in a staggered manner, and the first U-shaped bevel is parallel to the second U-shaped bevel.

[0012] According to the sealing member described above, the number of the first U-shaped oblique openings is multiple, and the distance between any two adjacent first U-shaped oblique openings is equal;

[0013] There are multiple second U-shaped bevels, and the distance between any two adjacent second U-shaped bevels is equal;

[0014] The distance between any two adjacent first U-shaped oblique openings is equal to the distance between any two adjacent second U-shaped oblique openings.

[0015] According to the seal described above, the angle formed between the first U-shaped bevel and the upper annular surface of the seal body is 30° to 60°;

[0016] And / or, the angle formed by the second U-shaped bevel and the lower annular surface of the sealing body is 30°~60°.

[0017] According to the seal described above, the width of the first U-shaped bevel is 0.1 mm to 1 mm;

[0018] And / or, the width of the second U-shaped bevel is 0.1 mm to 1 mm.

[0019] According to the sealing member described above, the depth of the first U-shaped bevel is 1 mm to 3 mm;

[0020] And / or, the depth of the second U-shaped bevel is 1 mm to 3 mm.

[0021] According to the sealing member described above, the width of the U-shaped deformation groove is 0.5 mm to 2 mm.

[0022] According to the sealing member described above, a first chamfered portion is provided on a side of the first force-bearing portion close to the deformed extrusion portion;

[0023] And / or, a second chamfered portion is provided on a side of the second force-bearing portion close to the deformation extrusion portion.

[0024] According to the sealing member described above, the sealing member is made of spring steel material.

[0025] On the other hand, the present invention also provides a hot runner system, including a cylinder body and an upper piston and a lower piston arranged in the cylinder body, and also including the above-mentioned seal, the seal is arranged between the upper piston and the lower piston, and the seal is in contact and connected with the inner wall of the cylinder body, the upper piston and the lower piston.

[0026] The seal and hot runner system provided by the present invention have at least the following beneficial effects:

[0027] The seal and hot runner system provided by the present invention are made of metal material, which effectively enhances the wear resistance of the seal; the setting of the first U-shaped bevel and the second U-shaped bevel can stabilize the deformation direction when the upper piston and the lower piston apply pressure; the set U-shaped deformation groove serves as an elastic deformation space, and when the upper piston and the lower piston apply pressure, the width of the U-shaped deformation groove is compressed, and the outer diameter of the entire seal becomes larger, so that the seal and the inner wall of the cylinder body are more effectively fitted, thereby reducing the matching gap between the seal and the inner wall of the cylinder body and avoiding air cross-talk; the seal and the hot runner system provided by the present invention have a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of the sealing member provided in the embodiment of the present invention Figure 1 ;

[0030] Figure 2 A schematic diagram of the structure of the sealing member provided in the embodiment of the present invention Figure 2 ;

[0031] Figure 3 A schematic diagram of the structure of the sealing member provided in the embodiment of the present invention Figure 3 ;

[0032] Figure 4 A schematic structural diagram of a hot runner system provided in an embodiment of the present invention.

[0033] Among them, the reference numerals in the figure are:

[0034] 100. seal; 10. seal body; 20. first force-bearing portion; 21. first U-shaped bevel; 22. first chamfered portion; 30. second force-bearing portion; 31. second U-shaped bevel; 32. second chamfered portion; 40. deformation extrusion portion; 50. U-shaped deformation groove; 200. cylinder body; 300. upper piston; 400. lower piston; 1000. hot runner system. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0037] See also Figure 1 , the present embodiment provides a seal 100, the seal 100 is made of metal material, and the seal 100 includes: a seal body 10, the seal body 10 is annular; a first force-bearing portion 20, the first force-bearing portion 20 is arranged on the upper annular surface of the seal body 10 and connected to the seal body 10, and the first force-bearing portion 20 is provided with at least one first U-shaped bevel 21; a second force-bearing portion 30, the second force-bearing portion 30 is arranged on the lower annular surface of the seal body 10 and connected to the seal body 10, and the second force-bearing portion 30 is provided with at least one second U-shaped bevel 31; a deformation extrusion portion 40, the deformation extrusion portion 40 is arranged on the outer annular surface of the seal body 10 and connected to the seal body 10; a U-shaped deformation groove 50, the U-shaped deformation groove 50 is arranged inside the seal body 10, and the opening of the U-shaped deformation groove 50 extends to the inner annular surface of the seal body 10.

[0038] The working principle of the sealing member 100 provided in this embodiment is as follows:

[0039] The seal 100 provided in the present embodiment is made of metal material, and the use of metal material effectively enhances the wear resistance of the seal 100; at the same time, the present embodiment also provides a first U-shaped bevel 21 on the first force-bearing part 20 and a second U-shaped bevel 31 on the second force-bearing part 30, and the first U-shaped bevel 21 and the second U-shaped bevel 31 can stabilize the deformation direction of the seal 100 when the upper piston 300 and the lower piston 400 apply pressure. The present embodiment also provides a U-shaped deformation groove 50 inside the seal body 10, and the U-shaped deformation groove 50 serves as an elastic deformation space. When the upper piston 300 and the lower piston 400 apply pressure to the first force-bearing part 20 and the second force-bearing part 30, the width of the U-shaped deformation groove 50 is compressed, and the outer diameter of the entire seal 100 becomes larger, so that the deformation extrusion part 40 is more effectively fitted with the inner wall of the cylinder body 200, thereby reducing the matching gap between the seal 100 and the inner wall of the cylinder body 200, and avoiding air cross-talk.

[0040] The seal 100 provided in this embodiment has at least the following beneficial effects:

[0041] The seal 100 provided in the present embodiment is made of metal material, which effectively enhances the wear resistance of the seal 100; the setting of the first U-shaped bevel 21 and the second U-shaped bevel 31 can stabilize the deformation direction when the upper piston 300 and the lower piston 400 apply pressure; the U-shaped deformation groove 50 is set as an elastic deformation space. When the upper piston 300 and the lower piston 400 apply pressure, the width of the U-shaped deformation groove 50 is compressed, and the outer diameter of the entire seal 100 becomes larger, so that the seal 100 and the inner wall of the cylinder body 200 are more effectively fitted, thereby reducing the fitting clearance between the seal 100 and the inner wall of the cylinder body 200 and avoiding air leakage; the seal 100 provided in the present embodiment has a simple structure and low cost.

[0042] Optionally, the first force-bearing portion 20 is fixedly connected to the seal body 10. Optionally, the first force-bearing portion 20 and the seal body 10 are an integrated structure.

[0043] Optionally, the second force-bearing portion 30 is fixedly connected to the seal body 10. Optionally, the second force-bearing portion 30 and the seal body 10 are an integrated structure.

[0044] Optionally, the deformable extrusion portion 40 is fixedly connected to the seal body 10. Optionally, the deformable extrusion portion 40 and the seal body 10 are an integrated structure.

[0045] In one embodiment, please refer to Figure 1The first U-shaped bevel 21 and the second U-shaped bevel 31 are arranged in a staggered manner, and the first U-shaped bevel 21 is parallel to the second U-shaped bevel 31. The first U-shaped bevel 21 and the second U-shaped bevel 31 are arranged in a staggered manner, and the first U-shaped bevel 21 and the second U-shaped bevel 31 are arranged in parallel, and the opening directions of the first U-shaped bevel 21 and the second U-shaped bevel 31 are extended in opposite directions, so that when the upper piston 300 and the lower piston 400 are pressed, the deformation direction of the seal 100 is more stabilized.

[0046] In one embodiment, please refer to Figure 1 , the number of the first U-shaped bevels 21 is multiple, and the spacing between any two adjacent first U-shaped bevels 21 is equal; the number of the second U-shaped bevels 31 is multiple, and the spacing between any two adjacent second U-shaped bevels 31 is equal; the spacing between any two adjacent first U-shaped bevels 21 is equal to the spacing between any adjacent second U-shaped bevels 31. A plurality of first U-shaped bevels 21 are provided, and the spacing between two adjacent first U-shaped bevels 21 is equal. At the same time, a plurality of second U-shaped bevels 31 are provided, and the spacing between two adjacent second U-shaped bevels 31 is equal, and the spacing between any two adjacent first U-shaped bevels 21 is equal to the spacing between any adjacent second U-shaped bevels 31, so that when the upper piston 300 and the lower piston 400 apply pressure, the seal 100 is deformed more evenly by force, thereby further stabilizing the force deformation direction of the seal 100.

[0047] In one embodiment, see Figure 2 The angle α formed by the first U-shaped bevel 21 and the upper annular surface of the seal body 10 is 30°~60°.

[0048] Optionally, the angle α formed between the first U-shaped bevel 21 and the upper annular surface of the seal body 10 is 30°.

[0049] Optionally, the angle α formed by the first U-shaped bevel 21 and the upper annular surface of the seal body 10 is 45°.

[0050] Optionally, the angle α formed by the first U-shaped bevel 21 and the upper annular surface of the seal body 10 is 60°.

[0051] It should be understood that the angle α formed by the first U-shaped bevel 21 and the upper annular surface of the seal body 10 is not limited to the above situation, and can also be other situations, which are not limited here.

[0052] In one embodiment, see Figure 2 The angle β formed by the second U-shaped bevel 31 and the lower annular surface of the sealing body 10 is 30°~60°.

[0053] Optionally, the angle β formed by the second U-shaped bevel 31 and the lower annular surface of the seal body 10 is 30°.

[0054] Optionally, the angle β formed by the second U-shaped bevel 31 and the lower annular surface of the seal body 10 is 45°.

[0055] Optionally, the included angle β between the second U-shaped bevel 31 and the lower annular surface of the seal body 10 is 60°.

[0056] It should be understood that the size of the angle β formed by the second U-shaped bevel 31 and the lower annular surface of the seal body 10 is not limited to the above situation, and can also be other situations, which are not limited here.

[0057] In one embodiment, see Figure 2 , the width m1 of the first U-shaped bevel 21 is 0.1 mm~1 mm.

[0058] Optionally, a width m1 of the first U-shaped bevel 21 is 0.1 mm.

[0059] Optionally, a width m1 of the first U-shaped bevel 21 is 0.5 mm.

[0060] Optionally, a width m1 of the first U-shaped bevel 21 is 1 mm.

[0061] It should be understood that the width m1 of the first U-shaped bevel 21 is not limited to the above-mentioned value, but may be other values, which are not limited here.

[0062] In one embodiment, see Figure 2 , the width m2 of the second U-shaped bevel 31 is 0.1 mm~1 mm.

[0063] Optionally, a width m2 of the second U-shaped bevel 31 is 0.1 mm.

[0064] Optionally, a width m2 of the second U-shaped bevel 31 is 0.5 mm.

[0065] Optionally, a width m2 of the second U-shaped bevel 31 is 1 mm.

[0066] It should be understood that the width m2 of the second U-shaped bevel 31 is not limited to the above-mentioned value, but may be other cases, which is not limited here.

[0067] In one embodiment, see Figure 2 , the depth h1 of the first U-shaped bevel 21 is 1 mm to 3 mm.

[0068] Optionally, a depth h1 of the first U-shaped bevel 21 is 1 mm.

[0069] Optionally, a depth h1 of the first U-shaped bevel 21 is 2 mm.

[0070] Optionally, a depth h1 of the first U-shaped bevel 21 is 3 mm.

[0071] It should be understood that the depth h1 of the first U-shaped bevel 21 is not limited to the above-mentioned value, but may be other situations, which is not limited here.

[0072] In one embodiment, see Figure 2 , the depth h2 of the second U-shaped bevel 31 is 1 mm to 3 mm.

[0073] Optionally, a depth h2 of the second U-shaped bevel 31 is 1 mm.

[0074] Optionally, a depth h2 of the second U-shaped bevel 31 is 2 mm.

[0075] Optionally, a depth h2 of the second U-shaped bevel 31 is 3 mm.

[0076] It should be understood that the depth h2 of the second U-shaped bevel 31 is not limited to the above-mentioned value, but may be other situations, which is not limited here.

[0077] In one embodiment, see Figure 3 The length n1 of the first U-shaped bevel 21 is not greater than the width of the upper annular surface of the seal body 10 , and the length of the second U-shaped bevel 31 is not greater than the width of the lower annular surface of the seal body 10 .

[0078] Optionally, the length n1 of the first U-shaped bevel 21 is equal to the width of the upper annular surface of the seal body 10, and the length of the second U-shaped bevel 31 is equal to the width of the lower annular surface of the seal body 10. It should be understood that the length n1 of the first U-shaped bevel 21 and the length of the second U-shaped bevel 31 can change with the change of the upper annular surface and the lower annular surface.

[0079] In one embodiment, see Figure 2 , the width L of the U-shaped deformation groove 50 is 0.5mm~2mm.

[0080] Optionally, the width L of the U-shaped deformation groove 50 is 0.5 mm.

[0081] Optionally, the width L of the U-shaped deformation groove 50 is 1 mm.

[0082] Optionally, the width L of the U-shaped deformation groove 50 is 1.5 mm.

[0083] Optionally, the width L of the U-shaped deformation groove 50 is 2 mm.

[0084] It should be understood that the width L of the U-shaped deformation groove 50 is not limited to the above-mentioned value, but may be other cases, which is not limited here.

[0085] In one embodiment, see Figure 1 and Figure 2 A first chamfered portion 22 is provided on a side of the first force-bearing portion 20 close to the deformation extrusion portion 40 ; a second chamfered portion 32 is provided on a side of the second force-bearing portion 30 close to the deformation extrusion portion 40 .

[0086] In one embodiment, the seal 100 is made of spring steel material.

[0087] See also Figure 4 The present embodiment further provides a hot runner system 1000, including a cylinder 200, an upper piston 300 and a lower piston 400 disposed in the cylinder 200, and also including the aforementioned sealing member 100, wherein the sealing member 100 is disposed between the upper piston 300 and the lower piston 400, and the sealing member 100 is in contact with and connected to the inner wall of the cylinder 200, the upper piston 300, and the lower piston 400. Since the structure of the sealing member 100 has been described in detail above, it will not be repeated here.

[0088] In summary, the present embodiment provides a seal 100, which is made of a metal material and includes: a seal body 10, which is annular; a first force-bearing portion 20, which is arranged on the upper annular surface of the seal body 10 and connected to the seal body 10, and the first force-bearing portion 20 is provided with at least one first U-shaped bevel 21; a second force-bearing portion 30, which is arranged on the lower annular surface of the seal body 10 and connected to the seal body 10, and the second force-bearing portion 30 is provided with at least one second U-shaped bevel 31; a deformation extrusion portion 40, which is arranged on the outer annular surface of the seal body 10 and connected to the seal body 10; a U-shaped deformation groove 50, which is arranged inside the seal body 10, and the opening of the U-shaped deformation groove 50 extends to the inner annular surface of the seal body 10. The present embodiment also provides a hot runner system 1000, including a cylinder body 200 and an upper piston 300 and a lower piston 400 disposed in the cylinder body 200, and also includes the above-mentioned seal 100, wherein the seal 100 is disposed between the upper piston 300 and the lower piston 400, and the seal 100 is in contact and connected with the inner wall of the cylinder body 200, the upper piston 300 and the lower piston 400. The seal 100 and the hot runner system 1000 provided in this embodiment are made of metal material, which effectively enhances the wear resistance of the seal 100; the setting of the first U-shaped bevel 21 and the second U-shaped bevel 31 can stabilize the deformation direction when the upper piston 300 and the lower piston 400 apply pressure; the U-shaped deformation groove 50 is set as an elastic deformation space. When the upper piston 300 and the lower piston 400 apply pressure, the width of the U-shaped deformation groove 50 is compressed, and the outer diameter of the entire seal 100 becomes larger, so that the seal 100 and the inner wall of the cylinder body 200 are more effectively fitted, thereby reducing the fitting clearance between the seal 100 and the inner wall of the cylinder body 200 and avoiding air leakage; the seal 100 provided in this embodiment has a simple structure and low cost.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing member, characterized in that: The sealing member is made of a metal material and comprises: A sealing body, wherein the sealing body is annular; A first force-bearing portion, which is disposed on the upper annular surface of the sealing body and connected to the sealing body, and has a plurality of first U-shaped bevels; A second force-bearing portion, the second force-bearing portion is disposed on the lower annular surface of the sealing body and connected to the sealing body, and the second force-bearing portion is provided with a plurality of second U-shaped bevels; A deformation extrusion portion, the deformation extrusion portion is arranged on the outer annular surface of the sealing body and connected to the sealing body; A U-shaped deformation groove, wherein the U-shaped deformation groove is arranged inside the sealing body, and the opening of the U-shaped deformation groove extends to the inner annular surface of the sealing body; When the first force-bearing part and the second force-bearing part are subjected to pressures applied by the upper piston and the lower piston, the first U-shaped bevel and the second U-shaped bevel can stabilize the deformation direction of the seal body, and the width of the U-shaped deformation groove is compressed, so that the outer diameter of the entire seal body becomes larger and fits tightly with the inner wall of the cylinder; The first U-shaped bevel and the second U-shaped bevel are arranged in a staggered manner, and the first U-shaped bevel is parallel to the second U-shaped bevel, and the opening directions of the first U-shaped bevel and the second U-shaped bevel are extended in opposite directions; There are multiple first U-shaped bevels, and the distance between any two adjacent first U-shaped bevels is equal; There are multiple second U-shaped bevels, and the distance between any two adjacent second U-shaped bevels is equal; The distance between any two adjacent first U-shaped oblique openings is equal to the distance between any two adjacent second U-shaped oblique openings.

2. The seal according to claim 1, characterized in that The angle between the first U-shaped bevel and the upper annular surface of the sealing body is 30° to 60°; And / or, the angle formed by the second U-shaped bevel and the lower annular surface of the sealing body is 30°~60°.

3. The seal according to claim 1, characterized in that The width of the first U-shaped bevel is 0.1 mm to 1 mm; And / or, the width of the second U-shaped bevel is 0.1 mm to 1 mm.

4. The seal according to claim 1, characterized in that The depth of the first U-shaped bevel is 1 mm to 3 mm; And / or, the depth of the second U-shaped bevel is 1 mm to 3 mm.

5. The seal according to claim 1, characterized in that The width of the U-shaped deformation groove is 0.5mm-2mm.

6. The seal according to claim 1, characterized in that A first chamfered portion is provided on one side of the first force-bearing portion close to the deformed extrusion portion; And / or, a second chamfered portion is provided on a side of the second force-bearing portion close to the deformation extrusion portion.

7. The seal according to claim 1, characterized in that The sealing element is made of spring steel material.

8. A hot runner system, characterized in that: It includes a cylinder body and an upper piston and a lower piston arranged in the cylinder body, and also includes a seal as described in any one of claims 1 to 7, wherein the seal is arranged between the upper piston and the lower piston, and the seal is in contact and connected with the inner wall of the cylinder body, the upper piston and the lower piston.

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