Orifice plate forming method for increasing outage value of orifice plate

Abstract

The invention discloses a pore plate forming method for increasing the power-off value of a pore plate, and relates to the technical field of pore plate production, and the pore plate forming method comprises the following steps: S1, taking out a plate body, and flatly placing the plate body on the top surface of a third concave template; a conical head is welded to the bottom of the third male die, the third male die and the conical head synchronously move towards the plate body, and after the conical head is pressed on the top surface of the plate body, a conical hole is formed in the top surface of the plate body; s3, an annular pressing rib B is welded to the top surface of the pressing die B, the outer side face of the annular pressing rib B is a conical face, the inner side face of the annular pressing rib B is a cylindrical face, the pressing die B and the annular pressing rib B are embedded into a cavity of a fourth female die plate from bottom to top, the annular pressing rib B on the pressing die B is pressed on the bottom surface of the plate body, and the pressing die B is pressed on the bottom surface of the plate body; and therefore, an annular groove B is formed in the bottom surface of the plate body, and a pore plate B is produced. The device has the beneficial effect that the power-off value of the formed pore plate is greatly increased.

Description

Technical Field

[0001] The invention relates to the technical field of producing orifice plates, in particular to an orifice plate forming method for improving the power-off value of the orifice plate. Background Art

[0002] The power-off value of the battery explosion-proof valve means that when the internal pressure of the battery reaches a certain set value, the battery explosion-proof valve will open and release the internal gas, thereby automatically powering off the battery and playing a role in safety protection. The core component of the battery explosion-proof valve is the orifice plate. The higher the power-off value of the orifice plate, the more sensitive the power-off action of the battery explosion-proof valve is, and the higher the corresponding safety is; on the contrary, the lower the power-off value of the orifice plate, the slower the power-off action of the battery explosion-proof valve is, and the corresponding safety is lower.

[0003] The structure of the orifice plate A produced by a workshop is as follows Figure 1~Figure 2 As shown, the orifice plate A includes a plate body 1, a straight hole 2 opened on the top surface of the orifice plate A, and an annular groove A3 located directly below the straight hole 2 is opened on the bottom surface of the plate body 1. The annular groove A3 is coaxial with the straight hole 2, and the inner and outer sides of the annular groove A3 are both conical surfaces. When in use, the orifice plate A is assembled to the top position of the battery explosion-proof valve. When the internal pressure of the battery reaches a certain set value, the material between the bottom of the annular groove A3 of the orifice plate A and the bottom of the straight hole 2 is first broken, and the battery is automatically powered off.

[0004] The method of producing the orifice plate A in the workshop is: S1, take out a plate body 1, and place the plate body 1 flat on the top surface of the first concave plate 4, as shown in FIG. Figure 3 As shown, the top surface of the plate body 1 is pressed down by the first punch 5 to form a straight hole 2 on the top surface of the plate body 1, as shown in FIG. Figure 4 As shown; S2, place the plate 1 with the straight hole 2 flat on the top surface of the second concave mold plate 6, press the second convex mold 7 into the straight hole 2, and fix the plate 1 on the second concave mold plate 6, as shown in FIG. Figure 5 Then, an annular rib A9 is welded on the top surface of the die A8, as shown in FIG. Figure 6~Figure 7 As shown, the inner and outer sides of the annular rib A9 are both conical surfaces. The die A8 is inserted into the cavity of the second concave die plate 6 from bottom to top, and the annular rib A9 on the die A8 is pressed on the bottom surface of the plate body 1, thereby forming an annular groove A3 on the bottom surface of the plate body 1, as shown in FIG. Figure 8 As shown, the orifice plate A is produced, and the structure of the orifice plate A is as follows Figure 1~Figure 2 As shown; S3. Repeat steps S1 to S2 to continuously produce orifice plates A.

[0005] However, the orifice plate A produced by this method has the following technical defects: I. In step S1, since the lower end of the first punch 5 is a cylindrical surface, when the bottom surface of the first punch 5 is pressed onto the top surface of the plate body 1, most of the top material of the plate body 1 flows downward, thereby causing the bottom material of the straight hole 2 to harden, resulting in the material between the bottom of the annular groove A3 of the orifice plate A and the bottom of the straight hole 2 being difficult to break, resulting in a technical defect of a low power-off value.

[0006] II. In step S2, when the annular rib A9 of the die A8 is pressed on the bottom surface of the plate body 1, since the inner and outer sides of the annular rib A9 are both conical surfaces, the material inside the inner side of the annular rib A9 flows inward, and at the same time, the material outside the outer side of the annular rib A9 flows outward, which causes the bottom material of the formed orifice plate A to bulge downward. Due to the presence of the bulge, the material between the bottom of the annular groove A3 of the orifice plate A and the bottom of the straight hole 2 is also difficult to break, thereby further reducing the power-off value of the orifice plate A.

[0007] Therefore, there is an urgent need for a forming method that greatly improves the power-off value of the formed orifice plate. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for forming an orifice plate with a high power-off value of the orifice plate.

[0009] The purpose of the present invention is achieved through the following technical solution: a method for forming an orifice plate for improving the power-off value of the orifice plate, which comprises the following steps: S1, take out a plate body, and place the plate body flat on the top surface of the third concave mold plate; weld a conical head at the bottom of the third convex mold, so that the third convex mold and the conical head move toward the plate body synchronously, and when the conical head is pressed onto the top surface of the plate body, a conical hole is formed on the top surface of the plate body; S2, take away the plate with the tapered hole, and then place the plate flat on the top surface of the fourth concave mold plate, and ensure that the tapered hole of the plate is just above the cavity of the fourth concave mold plate; weld a tapered head at the bottom of the fourth punch, and embed the tapered head of the fourth punch into the tapered hole of the plate to fix the plate on the fourth concave mold plate; S3, welding an annular rib B on the top surface of the die B, wherein the outer side of the annular rib B is a conical surface, and the inner side of the annular rib B is a cylindrical surface, and the die B and the annular rib B are embedded into the cavity of the fourth concave mold plate from bottom to top, and the annular rib B on the die B is pressed on the bottom surface of the plate body, thereby forming an annular groove B on the bottom surface of the plate body, and then producing the orifice plate B; S4. Repeat steps S1 to S3 to continuously produce orifice plates B.

[0010] The third punch in step S2 is coaxial with the conical head.

[0011] The fourth punch in step S2 is coaxial with the conical head.

[0012] The pressing die B in step S3 is coaxial with the annular pressing bead B.

[0013] In step S3, the annular groove B of the orifice plate B is formed to be coaxial with the tapered hole.

[0014] The present invention has the following advantages: I. The third punch and the conical head move synchronously toward the plate body. When the conical head is pressed onto the top surface of the plate body, a conical hole is formed on the top surface of the plate body. Since the conical head of the third punch is a conical surface, when the conical surface of the conical head of the third punch is pressed onto the top surface of the plate body, most of the top material of the plate body flows away from the conical head and does not flow all downward. Therefore, compared with the production method in the workshop, this forming method effectively avoids the hardening of the bottom material of the formed conical hole, resulting in the material between the bottom of the annular groove B of the orifice plate B and the bottom of the conical hole being easily broken, thereby greatly improving the power-off value of the formed orifice plate B.

[0015] II. The annular rib B on the die B is pressed onto the bottom surface of the plate body, thereby forming an annular groove B on the bottom surface of the plate body, and then producing the orifice plate B. Since the outer side surface of the annular rib B of the die B is a conical surface, and the inner side surface is a cylindrical surface, the material outside the outer side surface of the annular rib B flows outward, while the material inside the inner side surface of the annular rib B does not flow, thereby effectively avoiding the existence of a convex bulge at the bottom of the formed orifice plate B, thereby further improving the power-off value of the formed orifice plate B. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of orifice plate A; Figure 2 for Figure 1 Bottom view of Figure 3 A schematic diagram of placing a plate body flat on the top surface of the first concave mold plate; Figure 4 is a schematic diagram of forming a straight hole on the top surface of a plate; Figure 5 A schematic diagram of fixing the plate body on the second concave template; Figure 6 It is a schematic diagram of welding the die A and the annular rib A; Figure 7 for Figure 6 The main cross-sectional diagram of Figure 8 is a schematic diagram of an annular groove A formed by an annular rib A on the bottom surface of a plate body; Fig. 9 A schematic diagram of placing a plate body flat on the top surface of the third concave plate; Fig.10 is a schematic diagram of forming a tapered hole on the top surface of a plate; Fig.11 A schematic diagram of fixing the plate body on the fourth concave plate; Fig.12 It is a schematic diagram of welding the die B and the annular rib B; Fig.13 for Fig.12 The main cross-sectional diagram of Fig.14 It is a schematic diagram of the annular groove B formed by the annular rib B on the bottom surface of the plate body; Fig.15 Schematic diagram of the structure of the formed orifice plate B; Fig.16 for Fig.15 Bottom view of In the figure: 1- plate body, 2- straight hole, 3- annular groove A, 4- first concave mold plate, 5- first convex mold, 6- second concave mold plate, 7- second convex mold, 8- pressing mold A, 9- annular pressing rib A; 10-third concave mold plate, 11-third punch mold, 12-conical head, 13-conical hole, 14-fourth concave mold plate, 15-fourth punch mold, 16-pressing mold B, 17-annular rib B, 18-annular groove B. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: A method for forming an orifice plate for improving the power-off value of the orifice plate comprises the following steps: S1, take out a plate body 1, and place the plate body 1 flat on the top surface of the third concave plate 10, as shown in FIG. Fig. 9 As shown; a conical head 12 is welded at the bottom of the third punch 11, and the third punch 11 is coaxial with the conical head 12, so that the third punch 11 and the conical head 12 move synchronously toward the plate body 1. When the conical head 12 is pressed onto the top surface of the plate body 1, a conical hole 13 is formed on the top surface of the plate body 1, as shown in FIG. Fig.10 As shown; It can be seen in step S1 that, since the conical head 12 of the third punch 11 is a conical surface, when the conical surface of the conical head 12 of the third punch 11 is pressed onto the top surface of the plate body 1, most of the top material of the plate body 1 flows away from the conical head 12, and does not flow all downward. Figure 3~Figure 8The production method shown effectively avoids the hardening of the bottom material of the formed tapered hole 13, resulting in the material between the bottom of the annular groove B18 of the orifice plate B and the bottom of the tapered hole 13 being easily broken, thereby greatly improving the power-off value of the formed orifice plate B.

[0018] S2, take away the plate body 1 with the tapered hole 13, and then place the plate body 1 flat on the top surface of the fourth concave mold plate 14, and ensure that the tapered hole 13 of the plate body 1 is just above the cavity of the fourth concave mold plate 14; weld the tapered head 12 at the bottom of the fourth punch 15, the fourth punch 15 is coaxial with the tapered head 12, and the tapered head 12 of the fourth punch 15 is embedded in the tapered hole 13 of the plate body 1 to fix the plate body 1 on the fourth concave mold plate 14, as shown in FIG. Fig.11 As shown; S3, welding an annular rib B17 on the top surface of the die B16, such as Figure 12~Figure 13 As shown, the die B16 is coaxial with the annular rib B17, wherein the outer side surface of the annular rib B17 is a conical surface, and the inner side surface of the annular rib B17 is a cylindrical surface. The die B16 and the annular rib B17 are embedded into the cavity of the fourth concave mold plate 14 from bottom to top, and the annular rib B17 on the die B16 is pressed on the bottom surface of the plate body 1, thereby forming an annular groove B18 on the bottom surface of the plate body 1, as shown in FIG. Fig.14 As shown, the orifice plate B is produced, and the annular groove B18 of the orifice plate B is coaxial with the tapered hole 13. The structure of the orifice plate B is as shown in FIG. Figure 15-16 As shown; S4. Repeat steps S1 to S3 to continuously produce orifice plates B.

[0019] Among them, it can be known from step S3 that since the outer side surface of the annular rib B17 of the die B16 is a conical surface, and the inner side surface is a cylindrical surface, the material outside the outer side surface of the annular rib B17 flows outward, while the material inside the inner side surface of the annular rib B17 does not flow, thereby effectively avoiding the existence of a bulge at the bottom of the formed orifice plate B, thereby further improving the power-off value of the formed orifice plate B.

[0020] Finally, it should be noted that the above description 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 replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for forming an orifice plate for improving the power-off value of the orifice plate, characterized in that: It includes the following steps: S1, taking out a plate body (1), placing the plate body (1) flat on the top surface of the third concave mold plate (10); welding a conical head (12) to the bottom of the third convex mold (11), so that the third convex mold (11) and the conical head (12) move synchronously toward the plate body (1), and when the conical head (12) is pressed onto the top surface of the plate body (1), a conical hole (13) is formed on the top surface of the plate body (1); S2, remove the plate body (1) with the tapered hole (13), and then place the plate body (1) flat on the top surface of the fourth concave mold plate (14), and ensure that the tapered hole (13) of the plate body (1) is just above the cavity of the fourth concave mold plate (14); weld a tapered head (12) at the bottom of the fourth punch (15), and embed the tapered head (12) of the fourth punch (15) into the tapered hole (13) of the plate body (1), so as to fix the plate body (1) on the fourth concave mold plate (14); S3, welding an annular rib B (17) on the top surface of the die B (16), wherein the outer side surface of the annular rib B (17) is a conical surface, and the inner side surface of the annular rib B (17) is a cylindrical surface, and the die B (16) and the annular rib B (17) are embedded from bottom to top into the cavity of the fourth concave mold plate (14), and the annular rib B (17) on the die B (16) is pressed on the bottom surface of the plate body (1), thereby forming an annular groove B (18) on the bottom surface of the plate body (1), and then producing the orifice plate B; S4. Repeat steps S1 to S3 to continuously produce orifice plates B.

2. A method for forming an orifice plate for improving the power-off value of the orifice plate according to claim 1, characterized in that: The third punch (11) in step S1 is coaxial with the conical head (12).

3. A method for forming an orifice plate for improving the power-off value of the orifice plate according to claim 1, characterized in that: The fourth punch (15) in step S2 is coaxial with the conical head (12).

4. A method for forming an orifice plate for improving the power-off value of the orifice plate according to claim 1, characterized in that: The pressing die B (16) in step S3 is coaxial with the annular pressing bead B (17).

5. The orifice plate forming method for improving the orifice plate power-off value according to claim 1, characterized in that: In step S3, the annular groove B (18) of the orifice plate B is formed to be coaxial with the tapered hole (13).

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