Metal elastic sheet structure and metal elastic sheet structure production system thereof

Abstract

The invention discloses a metal elastic sheet structure which comprises a connecting part, the two ends of the connecting part are provided with a first bending part and a second bending part respectively, the first bending part is bent upwards along the connecting part, and the second bending part is bent downwards along the connecting part. The invention further discloses a production system of the metal elastic sheet structure. The production system of the metal elastic sheet structure comprises a stamping unit, at least one group of first bending units, at least one group of second bending units and at least one group of cutting units. The stamping unit is used for stamping and forming two L-shaped grooves in the two ends of the metal elastic plate correspondingly. The first bending unit is used for bending the metal elastic plate to form a first mounting part and a second mounting part; and the second bending unit is used for bending the metal elastic plate again to form a first elastic part and a second elastic part. Through stamping and repeated bending, the step of overturning the metal elastic plate for multiple times in a traditional production mode is omitted, the machining time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a metal shrapnel processing technology, and in particular to a metal shrapnel structure and a metal shrapnel structure production system. Background Art

[0002] Metal shrapnel is used in the key switches of most electronic devices. It is connected to the circuit board through the metal shrapnel to ensure good contact between the battery and the device, and prevent power failure or short circuit caused by poor contact. The shape of the metal shrapnel varies, usually stamped out of the general shape on the metal plate and then bent.

[0003] Chinese patent applications such as publication number CN116037734A provide a spring sheet bending device and a spring sheet bending method. The spring sheet is fixed by a first clamp and a second clamp, and a matching limiting feature is provided between the first clamp and the second clamp to limit the root of the extended arm to a tilted posture toward a preset direction to complete the bending of the spring sheet. However, this method can only bend one end of the spring sheet. When both ends need to be bent, it needs to be turned over, which is more troublesome.

[0004] The existing solution is to design a corresponding mold and bend the metal plate into shape at one time through the mold. This method is only suitable for a single style of metal springs, and the mold needs to be redesigned after the style is changed, which is costly.

[0005] In view of this, there is a need for further improvement in the prior art. Summary of the invention

[0006] Based on the above technical problems, the present invention proposes a metal shrapnel structure, which is used for the conductive part of the PCB board. The present invention also proposes a metal shrapnel structure production system, which is used to produce the metal shrapnel structure to achieve the purpose of optimizing the production process.

[0007] The technical solution of the present invention is achieved in this way:

[0008] A metal spring structure, characterized in that it comprises a connecting portion, wherein two ends of the connecting portion respectively have a first bending portion and a second bending portion, the first bending portion bends upward along the connecting portion, and the second bending portion bends downward along the connecting portion,

[0009] Wherein, the first bending component includes a first elastic portion and a first mounting portion, and a first clamping portion is formed between the first elastic portion and the first mounting portion;

[0010] The second bending component includes a second elastic portion and a second mounting portion, and a second engaging portion is formed between the second elastic portion and the second mounting portion.

[0011] A metal spring structure production system, characterized by comprising:

[0012] A punching unit, used for punching two L-shaped grooves at both ends of the metal elastic plate;

[0013] At least one set of first bending units, used for bending the metal elastic plate to form a first mounting portion and a second mounting portion;

[0014] At least one set of second bending units, used for bending the metal elastic plate again to form a first elastic portion and a second elastic portion;

[0015] At least one set of cutting units is used to separate the metal spring structure from the metal elastic plate, wherein:

[0016] The metal spring sheet structure production system also includes a transport unit, which transports the metal elastic sheet to the stamping unit, the first bending unit, the second bending unit and the cutting unit respectively.

[0017] As a preferred embodiment of the present invention, the first bending unit includes a mounting frame, one side of the mounting frame is fixedly connected to a creel frame, a first driving cylinder is arranged inside the creel frame, a first hinge plate is fixedly connected to the output end of the first driving cylinder, and the first hinge plate is rotatably connected to the second hinge plate.

[0018] As a preferred embodiment of the present invention, a second driving cylinder is provided on one side of the first hinge plate, a bite block is provided on the output shaft of the second driving cylinder, and a dial is provided at the connection between the first hinge plate and the second hinge plate, wherein the bite block has a column rod, a pill groove is provided on the dial, and the column rod is located in the pill groove.

[0019] As a preferred embodiment of the present invention, the stamping unit includes a first stamping cylinder, the output shaft of the first stamping cylinder is fixedly connected to the sliding plate, wherein a stamping plate is arranged below the sliding plate, and a stamping die strip matching the L-shaped groove is arranged at the bottom of the stamping plate.

[0020] As a preferred embodiment of the present invention, a buffer spring is provided between the sliding plate and the stamping plate.

[0021] As a preferred embodiment of the present invention, the second bending unit includes a first bending plate and a second bending plate, and the first bending plate is rotatably connected to the second bending plate.

[0022] As a preferred embodiment of the present invention, a gear is arranged between the first bending plate and the second bending plate, wherein a third driving cylinder is arranged on one side of the second bending plate, and a rack matching the gear is fixedly connected to the output shaft of the third driving cylinder.

[0023] As a preferred embodiment of the present invention, the cutting unit includes a first ball screw component, a first power motor is arranged on one side of the first ball screw component, a second ball screw component is arranged in cooperation with the first ball screw component, and the second ball screw component can slide along the first ball screw component.

[0024] As a preferred embodiment of the present invention, the second ball screw component is provided with a second power motor, a baffle is provided in cooperation with the second ball screw component, a second stamping cylinder is provided on one side of the baffle, and a cutting head is provided on the output end of the second stamping cylinder.

[0025] The metal spring sheet structure and the metal spring sheet structure production system of the present invention have the following beneficial effects: the steps of repeatedly flipping the metal elastic sheet in the traditional production method are reduced through stamping and multiple bending, the processing time is shortened, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the metal spring structure of the present invention;

[0027] Figure 2 This is a process diagram of the metal spring structure of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the conveying unit of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the punching unit of the present invention;

[0030] Figure 5 It is another perspective structural schematic diagram of the punching unit of the present invention;

[0031] Figure 6 It is a schematic diagram of the installation of the first bending unit of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the first bending unit of the present invention;

[0033] Figure 8 It is a partial structural schematic diagram of the first bending unit of the present invention;

[0034] Fig. 9 It is a schematic diagram of the installation of the second bending unit of the present invention;

[0035] Fig.10 is a schematic structural diagram of the second bending unit of the present invention;

[0036] Fig.11 It is a structural schematic diagram of a cutting unit of the present invention;

[0037] Fig.12 FIG. 2 is a schematic structural diagram of the cutting unit of the present invention from another angle.

[0038] The reference numerals are as follows: metal spring sheet structure 100, connecting portion 101, first bending portion 102, first elastic portion 102A, first mounting portion 102B, first clamping portion 102C, second bending member 103, second elastic portion 103A, second mounting portion 103B, second clamping portion 103C, metal elastic plate 11, L-shaped groove 12,

[0039] Metal spring structure production system 200, stamping unit 21, leg 211, first stamping cylinder 212, slide shaft 213, sliding plate 214, stamping plate 215, stamping die strip 216, buffer spring 217, first bending unit 22, mounting frame 221, creel 222, first driving cylinder 223, first hinge plate 224, second hinge plate 225, second driving cylinder 226, bite block 227, column Rod 227A, dial 228, pill slot 228A, second bending unit 23, first bending plate 231, second bending plate 232, gear 233, third driving cylinder 23, rack 235, cutting unit 24, first ball screw 241, first power motor 242, second ball screw 243, second power motor 244, baffle 245, second punching cylinder 246, cutting head 274. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0041] Reference Figure 1 As shown, the metal spring structure 100 proposed in this embodiment includes a connecting portion 101 , and two ends of the connecting portion 101 respectively have a first bending portion 102 and a second bending portion 103 .

[0042] The first bending component 102 is bent upward along the connecting portion 101, and the second bending component 103 is bent downward along the connecting portion 101. The first bending component 102 includes a first elastic portion 102A and a first mounting portion 102B, and a first clamping portion 102C is formed between the first elastic portion 102A and the first mounting portion 102B. The second bending component 103 includes a second elastic portion 103A and a second mounting portion 103B, and a second clamping portion 103C is formed between the second elastic portion 103A and the second mounting portion 103B.

[0043] During installation, the first engaging portion 102C and the second engaging portion 103C are respectively installed at the two ends to be connected, so that an elastic component is formed between the first elastic portion 102A, the second elastic portion 103A and the connecting portion 101 to allow the first mounting portion 102B and the second mounting portion 103B to move relative to each other.

[0044] The metal spring sheet structure 100 in this embodiment is formed by bending a metal elastic sheet multiple times. However, the existing bending machine is relatively large, so when producing such a metal spring sheet, it is often necessary to flip the metal elastic sheet and finally bend it into shape, which is quite troublesome. Therefore, this embodiment further describes the production process of the metal spring sheet structure 100.

[0045] Reference Figure 2 As shown, the production process of the metal spring structure 100 includes the following steps:

[0046] Step 1: stamping two L-shaped grooves 12 at both ends of the metal elastic plate 11;

[0047] Step 2: forming a first mounting portion 102B and a second mounting portion 103B by a first bending unit, and forming a first clamping portion 102C and a second clamping portion 103C between the first mounting portion 102B, the second mounting portion 103B and the metal elastic plate 11;

[0048] Step 3: forming the first elastic portion 102A and the second elastic portion 103A through the second bending unit. At this time, the metal spring structure 100 is formed;

[0049] Step 4: The formed metal spring structure 100 is cut and separated from the remaining metal elastic plate 11 by the cutting unit 24 .

[0050] Further, refer to Figures 3 to 12 As shown, this embodiment also proposes a metal spring structure production system 200, which is used to produce the metal spring structure 100. The metal spring structure production system 200 includes a stamping unit 21, a first bending unit 22, a second bending unit 23 and a cutting unit 24. The metal spring sheet 11 for producing the metal spring structure 100 is transported in one direction by a transport unit. The transport unit includes a transport rail 201, on which a plurality of clamps 202 are arranged, and the clamps 202 are used to clamp the metal spring sheet 11 and drive it to move in a certain direction. Figure 3 Move in the direction of the arrow.

[0051] Reference Figures 4 to 5As shown, the stamping unit 21 is used to stamp two L-shaped grooves 12 at both ends of the metal elastic plate 11. The stamping unit 21 includes a plurality of legs 211, and the tops of the plurality of legs 211 are commonly connected to a support plate. A first stamping cylinder 212 is arranged above the support plate, and the output shaft of the first stamping cylinder 212 is fixedly connected to a sliding plate 214. Two sliding shafts 213 are arranged on the sliding plate 214, and the sliding shafts 213 are slidably connected to the support plate, forcing the sliding plate 214 to slide in the vertical direction of the support plate. A stamping plate 215 is arranged below the sliding plate 214, and two stamping mold strips 216 matching the L-shaped grooves 12 are arranged at the bottom of the stamping plate 215.

[0052] In this embodiment, a small amount of test punching is first performed to check whether the punching unit 21 works normally and whether the product meets the requirements. According to the requirements of the metal elastic sheet 11 and the characteristics of the mold, the working parameters of the first punching cylinder 212, such as the punching speed and pressure, are set. The conveying unit delivers the metal elastic sheet 11 to the bottom of the punching unit 21 to ensure that the sheet is in the correct position. The positioning device is then used to fix the sheet to prevent displacement during the punching process. The first punching cylinder 212 is started, and the punching die 216 applies pressure to the metal elastic sheet 11 to deform it into the desired shape.

[0053] Furthermore, a buffer spring 217 is provided between the sliding plate 214 and the stamping plate 215. One of the functions is that during the stamping process, when the stamping die strip 216 is closed, the buffer spring 217 between the stamping die strip 216 and the metal elastic plate 11 is compressed. When the stamping is completed, when the stamping die strip 21 is opened, the spring will return to its original state, generating an upward thrust to help push the metal elastic plate 11 out of the stamping die strip 216, thereby preventing the product from adhering to the mold and being difficult to remove. Another function is that during the stamping process, a large impact force will be generated when the stamping die strip 216 is closed, and the buffer spring 217 can absorb this part of the impact energy, reduce the wear of the mold, and extend the service life of the mold.

[0054] After completing step 1, the first bending unit 22 performs a first bending on the metal elastic plate 11 .

[0055] Reference Figures 6 to 8 As shown, the first bending unit 22 includes a mounting frame 221, a creel 222 is fixedly connected to one side of the mounting frame 221, and a first driving cylinder 223 is arranged inside the creel 222. A first hinge plate 224 is fixedly connected to the output end of the first driving cylinder 223, and the first hinge plate 224 is rotatably connected to the second hinge plate 225. The first hinge plate 224 and the second hinge plate 225 are perpendicular to each other at 90 degrees.

[0056] In this embodiment, again referring to Figure 6As shown, the first bending unit 22 is respectively arranged at the upper and lower ends of the metal elastic plate 11 to bend it simultaneously. The first driving cylinder 223 is started to drive the first hinge plate 224 and the second hinge plate 225 to move downward to bend the metal elastic plate 11.

[0057] Further, refer again to Figure 1 As shown, the first bending portion 102 is taken as an example. There is an acute angle between the first elastic portion 102A and the first mounting portion 102B, and the connection between them has an arc surface. During the bending process, a mold needs to be added to the first elastic portion 102A and the first mounting portion 102B. However, the first bending unit 22 bends it through the linear motion of the first driving cylinder 223, and it is impossible to form an acute angle between the first elastic portion 102A and the first mounting portion 102B.

[0058] Therefore, a second driving cylinder 226 is provided on one side of the first hinge plate 224, a bite block 227 is provided on the output shaft of the second driving cylinder 226, and a dial 228 is provided at the connection between the first hinge plate 224 and the second hinge plate 225. The bite block 227 has a column 227A, and a pill groove 228A is provided on the dial 228. The column 227A is located in the pill groove 228A, and the dial 228 can be driven to rotate by the second driving cylinder 226.

[0059] In this embodiment, the first driving cylinder 223 drives the first hinge plate 224 and the second hinge plate 225 to move vertically downward to bend the metal elastic plate 11, and the metal elastic plate 11 is bent to 90 degrees at most. Then, the second driving cylinder 226 drives the bite block 227 to move, forcing the dial 228 to drive the second hinge plate 225 to rotate, and further bends the metal elastic plate 11, so that an acute angle is formed between the first elastic portion 102A and the first mounting portion 102B.

[0060] After completing step 2, the metal elastic plate 11 is bent for the second time by the second bending unit 23. Figures 9 and 10 As shown, the second bending unit 23 is installed at the upper and lower ends of the metal elastic plate 11.

[0061] The second bending unit 23 includes a first bending plate 231 and a second bending plate 232, and a gear 233 is disposed between the first bending plate 231 and the second bending plate 232. A third driving cylinder 234 is disposed on one side of the second bending plate 232, and a rack 235 matching the gear 233 is fixedly connected to the output shaft of the third driving cylinder 234.

[0062] In this embodiment, again referring to Fig.10As shown, when the second bending unit 23 performs a second bending on the metal elastic plate 11, the rack 235 is driven to move by the third driving cylinder 234, and the rack 235 drives the first bending plate 231 to flip upward through the gear 233, and performs a second bending on the metal elastic plate 11.

[0063] After the bending is completed, the metal spring sheet structure 100 is separated from the metal spring sheet 11 by the cutting unit 24. Figure 11 to Figure 12 As shown, the cutting unit 24 includes a first ball screw 241, and a first power motor 242 is provided on one side of the first ball screw 241. A second ball screw 243 is provided in cooperation with the first ball screw 241, and the second ball screw 243 can slide along the first ball screw 241. The second ball screw 243 is provided with a second power motor 244, and a baffle 245 is provided in cooperation with the second ball screw 243. A second stamping cylinder 246 is provided on one side of the baffle 245, and a cutting head 274 is provided on the output end of the second stamping cylinder 246.

[0064] In this embodiment, the first ball screw 241 and the second ball screw 243 cooperate to align the cutting head 274 with both sides of the metal spring structure 100 , and the metal spring structure 100 is separated from the metal elastic plate 11 by driving the second punching cylinder 246 .

[0065] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal spring structure, characterized in that: The invention comprises a connecting portion, wherein two ends of the connecting portion respectively have a first bending portion and a second bending portion, the first bending portion bends upward along the connecting portion, and the second bending portion bends downward along the connecting portion, Wherein, the first bending component includes a first elastic portion and a first mounting portion, and a first clamping portion is formed between the first elastic portion and the first mounting portion; The second bending component includes a second elastic portion and a second mounting portion, and a second engaging portion is formed between the second elastic portion and the second mounting portion.

2. A metal spring structure production system for producing the metal spring structure according to claim 1, characterized in that: include: A punching unit, used for punching two L-shaped grooves at both ends of the metal elastic plate; At least one set of first bending units, used for bending the metal elastic plate to form a first mounting portion and a second mounting portion; At least one set of second bending units, used for bending the metal elastic plate again to form a first elastic portion and a second elastic portion; At least one set of cutting units is used to separate the metal spring structure from the metal elastic plate, wherein: The metal spring sheet structure production system also includes a transport unit, which transports the metal elastic sheet to the stamping unit, the first bending unit, the second bending unit and the cutting unit respectively.

3. The metal spring structure production system according to claim 2, characterized in that: The first bending unit comprises a mounting frame, one side of which is fixedly connected to a creel frame, a first driving cylinder is arranged inside the creel frame, a first hinge plate is fixedly connected to an output end of the first driving cylinder, and the first hinge plate is rotatably connected to the second hinge plate.

4. The metal spring structure production system according to claim 3, characterized in that: A second driving cylinder is arranged on one side of the first hinge plate, a bite block is arranged on the output shaft of the second driving cylinder, a dial is arranged at the connection between the first hinge plate and the second hinge plate, wherein the bite block has a column rod, a pill groove is arranged on the dial, and the column rod is located in the pill groove.

5. The metal spring structure production system according to claim 2, characterized in that: The punching unit comprises a first punching cylinder, the output shaft of which is fixedly connected to a sliding plate, wherein a punching plate is arranged below the sliding plate, and a punching die strip matching the L-shaped groove is arranged at the bottom of the punching plate.

6. The metal spring structure production system according to claim 5, characterized in that: A buffer spring is arranged between the sliding plate and the punching plate.

7. The metal spring structure production system according to claim 2, characterized in that: The second bending unit includes a first bending plate and a second bending plate, and the first bending plate is rotatably connected to the second bending plate.

8. The metal spring structure production system according to claim 7, characterized in that: A gear is arranged between the first bending plate and the second bending plate, wherein a third driving cylinder is arranged on one side of the second bending plate, and a rack matching the gear is fixedly connected to the output shaft of the third driving cylinder.

9. The metal spring structure production system according to claim 2, characterized in that: The cutting unit comprises a first ball screw component, a first power motor is arranged on one side of the first ball screw component, a second ball screw component is arranged in cooperation with the first ball screw component, and the second ball screw component can slide along the first ball screw component.

10. The metal spring structure production system according to claim 9, characterized in that: The second ball screw component is provided with a second power motor, and a baffle is provided in cooperation with the second ball screw component. A second stamping cylinder is provided on one side of the baffle, and a cutting head is provided on the output end of the second stamping cylinder.

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