Terminal spring automatic bending equipment and processing technology thereof

Abstract

The application provides a terminal spring automatic bending equipment and a processing technology thereof, and relates to the field of terminal spring bending equipment. The equipment comprises a conveying belt and a rack with a table plate. A plurality of limiting plates are arranged on the conveying belt, and one terminal is adaptively arranged between two adjacent limiting plates. A plurality of springs are inserted into one terminal. A first accommodating groove is arranged on the top of the table plate. A bottom plate driven by a first air cylinder is arranged in the first accommodating groove. A plurality of springs are arranged on the top of the bottom plate. The length of the bottom plate is less than that of the spring. A pressing roller is arranged above the bottom plate. The pressing roller presses the top and sidewall of the bottom plate. The pressing roller is used for simultaneously bending a plurality of springs. The application has the characteristics of improving the bending efficiency and bending effect of the springs on the terminal.

Description

Technical Field

[0001] This application relates to the field of end-bullet bending equipment, and in particular to automatic end-bullet bending equipment. In addition, it also relates to an automatic end-bullet bending process. Background Technology

[0002] Connectors, also known as plugs and sockets, are used to connect two active devices to transmit current or signals. With the rapid development of consumer electronics, automotive electronics, and communication terminal markets, connectors are evolving towards miniaturization, high density, and high-speed transmission. To reduce the size after assembly, the spring contacts of the connector terminals are typically bent. A bending device for terminal blocks is disclosed in Chinese patent document CN213959311U, which specifically discloses a base. The upper end of the base is provided with a feeding port, and one end of the feeding port is provided with a feeding mechanism. A plate is movably conveyed between the feeding port and the feeding mechanism. Hot rolling wheels are provided on both sides of the plate, and the plate is bent by a pair of hot rolling wheels.

[0003] In the aforementioned patent, the bending equipment bends only one sheet (i.e., the spring) at a time. Since a connector terminal has several springs, multiple bending operations are required, which reduces bending efficiency. Moreover, the size of the bent springs is smaller, which increases the difficulty of assembling the springs and terminals and reduces the overall assembly efficiency. Summary of the Invention

[0004] To address the issue of low bending efficiency of spring clips on terminals, this application provides an automatic bending device for spring clips and its processing technology.

[0005] In a first aspect, this application provides an automatic bending device for end-piece bullets, which adopts the following technical solution: An automatic bending device for end-piece springs includes a conveyor belt and a frame with a platform. The conveyor belt is provided with several limiting plates, and two adjacent limiting plates are adapted to be disposed at a terminal. Several springs are inserted into one of the terminals. The top of the platform is provided with a first receiving groove, and a base plate driven by a first cylinder is provided in the first receiving groove. Several springs are laid on the top of the base plate. The length of the base plate is less than the length of the springs. A pressure roller is provided above the base plate. The pressure roller presses against the top and side wall of the base plate. The pressure roller is used to bend several springs simultaneously.

[0006] By adopting the above technical solution, the base plate slides up and down within the first receiving groove under the action of the first cylinder, thereby supporting the spring sheet. The horizontal movement of the pressure roller can press the spring sheet, ensuring that the spring sheet can be in a straight state. The vertical movement of the pressure roller can bend the spring sheet. One pressure roller can bend several spring sheets on a terminal at the same time, effectively improving the bending efficiency.

[0007] Optionally, the pressure roller is fixed on a movable frame, and a transverse hydraulic cylinder for driving the pressure roller to move horizontally is provided on the outside of the movable frame, and a vertical hydraulic cylinder for driving the pressure roller to move vertically is provided above the movable frame.

[0008] By adopting the above technical solution, the horizontal hydraulic cylinder is used to drive the pressure roller to move in the horizontal direction and realize the pressing and shaping effect on the spring sheet, while the vertical hydraulic cylinder is used to drive the pressure roller to move in the vertical direction and realize the bending effect on the spring sheet.

[0009] Optionally, a pair of clamping plates driven by a second cylinder are provided between the platform and the conveyor belt. The pair of clamping plates are used to clamp the end of the spring piece near the terminal. The top of the base plate is provided with a plurality of first shaping grooves. The first shaping grooves penetrate the base plate. The end of the spring piece near the terminal is adapted to be located in the first shaping groove. The end of the spring piece away from the terminal extends to the outside of the base plate.

[0010] By adopting the above technical solution, after the terminal on the conveyor belt is displaced to the state of being aligned with the frame, a pair of second cylinders act simultaneously, so that a pair of clamping plates can complete the clamping action of all the spring pieces on the same terminal, thereby preventing the connection between the spring pieces and the terminal from loosening or even falling off during the bending process.

[0011] Optionally, the frame is further provided with a fixed plate for mounting a vertical hydraulic cylinder, and the movable frame is located below the fixed plate; the movable frame includes a movable plate and a slide block, the bottom of the movable plate is provided with a limiting groove, a slide bar is adaptedly provided in the limiting groove, the slide bar can slide in the limiting groove, the bottom of the slide bar is connected to the top of the slide block, the pressure roller is provided on the slide block and can rotate around itself, and the outer side of the movable plate is provided with a support plate for mounting a horizontal hydraulic cylinder; the push rod of the horizontal hydraulic cylinder is connected to the slide block and is used to push the slide block to move in the horizontal direction, and the push rod of the vertical hydraulic cylinder is connected to the movable plate and is used to push the movable plate and the slide block to move in the vertical direction.

[0012] By adopting the above technical solution, the fixed plate is fixedly mounted on the frame, thereby fixing the vertical positions of the second cylinder and the vertical hydraulic cylinder. When the second cylinder and the vertical hydraulic cylinder actuate, the clamping plate and the movable frame can correspondingly move vertically. When the vertical hydraulic cylinder remains stationary, and the push rod of the horizontal hydraulic cylinder actuates, the movable frame can generate horizontal displacement, thus ensuring that the pressure roller can move horizontally to achieve the pressing and shaping function, and also ensuring that it can move vertically to achieve the bending function.

[0013] Optionally, one of the second cylinders is located above the spring sheet and connected to the fixed plate, and the other of the second cylinders is located below the spring sheet and connected to the frame of the conveyor belt. The pair of second cylinders push the pair of clamping plates to move towards each other and clamp the spring sheet.

[0014] By adopting the above technical solution, a pair of clamps can reliably hold the spring sheet, thereby reducing the probability of the spring sheet falling off the terminal during the bending process, and thus ensuring that the terminal and the spring sheet are reliably connected after bending and can be put into use immediately.

[0015] Optionally, the outer wall of the pressure roller is provided with a plurality of pressure rings, the number of pressure rings being the same as the number of the first shaping grooves, and the pressure rings being used to press against the spring sheet.

[0016] By adopting the above technical solution, a pair of pressure rings are pressed into a first shaping groove. In this way, when the pressure rings roll with the pressure roller, they can continuously press the spring sheet into the first shaping groove, thereby realizing the shaping effect of any spring sheet and preventing the spring sheet from bending in an unorienting direction and affecting the bending in the specified direction.

[0017] Optionally, the platform is further provided with a second receiving groove communicating with the first receiving groove. An extension plate is provided in the second receiving groove. The top of the extension plate is provided with a second shaping groove communicating with the first shaping groove. A third cylinder is provided at the bottom of the platform. The third cylinder is used to push the extension plate to reciprocate in the vertical direction. The bottom of the extension plate is connected to the push rod of the third cylinder by a magnet.

[0018] By adopting the above technical solution, when the third cylinder pushes the extension plate and makes the top of the extension plate flush with the top of the base plate, the second shaping groove will be in a docking state with the first shaping groove, which is equivalent to extending the length of the first shaping groove. This can improve the shaping effect of the spring sheet.

[0019] Optionally, the base plate is inverted L-shaped, the first shaping groove is provided at the top of the horizontal end of the base plate, and the vertical end of the base plate is provided with a lead screw driven by a motor; the bottom of the extension plate is provided with a threaded hole, the lead screw and the threaded hole are in the same vertical plane, and the lead screw can be adapted to be screwed into the threaded hole.

[0020] By adopting the above technical solution, after the spring sheet is shaped, the third cylinder retracts, and the extension plate moves downward under the action of gravity. When the axis of the threaded hole coincides with the axis of the lead screw, the motor drives the lead screw to rotate, which can realize the threaded connection between the lead screw and the threaded hole. Then, the lead screw realizes the horizontal driving action of the extension plate. In this way, the extension plate will move to the bottom plate, which can prevent the extension plate from interfering with the bending of the spring sheet. Moreover, after the extension plate is located below the bottom plate, it is equivalent to increasing the thickness of the bottom plate and improving the bending effect of the spring sheet.

[0021] Optionally, the horizontal length of the base plate is greater than the length of the extension plate, and the extension plate has a guide groove on the side facing the base plate. The bottom of the guide groove passes through the extension plate, and the top of the guide groove communicates with the threaded hole. The lead screw extends to the bottom of the extension plate and interferes with the straight line where the guide groove is located. The lead screw is misaligned with the first shaping groove, and the threaded hole is misaligned with the second shaping groove.

[0022] By adopting the above technical solution, when the extension plate moves downward, the end of the lead screw will slide in the guide groove. When the top of the extension plate is flush with the bottom of the base plate, the lead screw and the threaded hole are in a coaxial state, so that the lead screw and the threaded hole can reliably cooperate after the lead screw rotates.

[0023] Secondly, this application provides an automatic bending process for end-piece bullets, employing the following technical solution: The automatic bending process for end-piece bullets includes the following steps: S1. Arrange several terminals sequentially on the conveyor belt and convey them toward the frame; S2. When the springs on the terminals correspond one-to-one with the first shaping grooves on the base plate, the first cylinder pushes the base plate up, and then a pair of second cylinders act, causing a pair of clamping plates to clamp the root of the springs on the terminals. S3. The horizontal hydraulic cylinder drives the pressure roller to move above the root of the spring sheet, and then the vertical hydraulic cylinder drives the pressure roller to move downward. When the pressure roller is in contact with the top of the base plate, the vertical hydraulic cylinder stops moving. S4. The horizontal hydraulic cylinder drives the pressure roller to roll away from the base plate. When the pressure roller moves to the outside of the pressure plate, the horizontal hydraulic cylinder stops moving and the vertical hydraulic cylinder drives the pressure roller to move downward again, so that the spring sheet bends at the top plate and the side wall of the base plate. S5. The horizontal and vertical hydraulic cylinders drive the pressure rollers to reset, the second cylinder drives the clamping plate to reset, the first cylinder drives the base plate to reset, and the conveyor belt transports the next terminal to be bent to the frame, and repeats the above steps to complete.

[0024] By adopting the above technical solution, the shaping and bending of the spring sheet is realized, thereby improving the shaping effect and bending efficiency of the spring sheet.

[0025] In summary, this application has the following beneficial effects: 1. By cooperating with the pressure roller and the pressure ring, the spring sheet is pressed into the first and second shaping grooves to achieve the shaping operation of the spring sheet. This ensures that all spring sheets on a terminal are in a straight state before bending, which facilitates the subsequent bending operation.

[0026] 2. By first vertically displacing the extension plate and then horizontally displacing it, the extension plate is moved from a state that is horizontally aligned with the base plate to a state that is vertically aligned with the base plate. In this way, the function of the extension plate changes from extending the length of the base plate to extending the thickness of the base plate, thereby ensuring that the spring sheet can remain in contact with the base plate or extension plate during the bending process, thus improving the bending accuracy. Attached Figure Description

[0027] Figure 1 This is a schematic perspective view of this application; Figure 2 This is a reference diagram showing the assembly state of the base plate and the extension plate; Figure 3 yes Figure 2 Reference diagram of the action state; Figure 4 This is a reference diagram showing the separation state of the base plate and the extension plate; Figure 5 It is a schematic three-dimensional representation of the movable frame and the machine frame. Figure 1 ; Figure 6 It is a schematic three-dimensional representation of the movable frame and the machine frame. Figure 2 ; Figure 7 This is a reference diagram showing the operational status of the movable frame; In the diagram: 1. Conveyor belt; 10. Limiting plate; 2. Platform; 21. First receiving groove; 22. Second receiving groove; 23. Third cylinder; 3. Frame; 31. Fixing plate; 4. Terminal; 40. Spring; 5. Base plate; 51. First shaping groove; 52. Motor; 53. Lead screw; 54. First cylinder; 6. Pressure roller; 60. Pressure ring; 7. Movable frame; 71. Horizontal hydraulic cylinder; 72. Vertical hydraulic cylinder; 73. Movable plate; 731. Limiting groove; 732. Sliding bar; 74. Sliding seat; 75. Support plate; 8. Clamping plate; 80. Second cylinder; 9. Extension plate; 91. Second shaping groove; 92. Threaded hole; 93. Guide groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0029] This embodiment discloses an automatic bending device for end-piece bullets.

[0030] Figure 1 This is a schematic perspective view of this application. See also Figure 1 The automatic bending device for terminal bullets includes a conveyor belt 1 and a frame 3. The conveyor belt 1 is equipped with several limiting plates 10. Two adjacent limiting plates 10 form a placement position for a terminal 4. Once the terminal 4 is placed in this position, it cannot be displaced. Several spring pieces 40 are connected to the side wall of each terminal 4. These spring pieces 40 are spaced apart in the same plane. The frame 3 is located outside the conveyor belt 1. The conveyor belt 1 transports the terminal 4 towards the frame 3, and the spring pieces 40 on the terminal 4 move to the inside of the frame 3.

[0031] Figure 2 This is a reference diagram showing the assembly state of the base plate and extension plate. See also... Figure 2 and combined Figure 1 A platform 2 is provided on the frame 3. The top of the platform 2 is provided with a first receiving groove 21 and a second receiving groove 22 that are interconnected. The inner diameter of the first receiving groove 21 is larger than the inner diameter of the second receiving groove 22. That is to say, the first receiving groove and the second receiving groove 22 will form a convex structure. A base plate 5 is adaptedly provided in the first receiving groove 21, and an extension plate 9 is provided in the second receiving groove 22. A first cylinder 54 and a third cylinder 23 are provided on the platform 2. The first cylinder 54 is used to push the base plate 5 to move vertically, and the third cylinder 23 is used to push the extension plate 9 to move vertically. In order to improve the stability of the base plate 5 and the extension plate 9 during movement, the number of the first cylinder 54 and the third cylinder 23 can be appropriately increased. At the same time, the push rod of the first cylinder 54 and the base plate 5, and the push rod of the third cylinder 23 and the extension plate 9 can be connected by magnets. Furthermore, under the limiting action of the first receiving groove 21 and the second receiving groove 22, it is ensured that the base plate 5 will not shake when pushed by the first cylinder 54 and the extension plate 9 will not shake when pushed by the third cylinder 23, thus ensuring the stability and accuracy of the movement process of the base plate 5 and the extension plate 9.

[0032] A plurality of first shaping grooves 51 are provided on the top of the base plate 5, and a plurality of second shaping grooves 91 are provided on the top of the extension plate 9. The number and spacing of the first shaping grooves 51 are the same as the number and spacing of the spring pieces 40 on the terminal 4. The second shaping grooves 91 correspond one-to-one with the first shaping grooves 51, that is, one first shaping groove 51 and one second shaping groove 91 are connected and arranged along the same straight line. The length of the base plate 5 is less than the length of the spring piece 40, and the length of the base plate 5 is greater than the length of the extension plate 9. The sum of the lengths of the base plate 5 and the extension plate 9 is not less than the length of the spring piece 40. The first shaping grooves 51 penetrate through the top of the base plate 5, and the second shaping grooves 91 penetrate through the top of the extension plate 9. In this way, the interconnected first shaping grooves 51 and second shaping grooves 91 can completely accommodate the spring pieces 40. Figure 3 yes Figure 2 Action state reference diagram, Figure 4 This is a reference diagram showing the separation of the base plate and the extension plate. See also... Figure 3 and Figure 4 The base plate 5 is inverted L-shaped. The first shaping groove 51 is located at the top of the horizontal end of the base plate 5. A lead screw 53 is provided at the vertical end of the base plate 5. The lead screw 53 extends in a direction away from the conveyor belt 1. A motor 52 for driving the lead screw 53 to rotate is also provided at the vertical end of the base plate 5. The vertical end of the base plate 5 can be used to place the motor 52 and the transmission mechanism, and can also support the lead screw 53 (a bearing seat can be provided between the lead screw 53 and the vertical end of the base plate 5), thereby ensuring that the suspended lead screw 53 can rotate reliably. A threaded hole 92 is provided at the bottom of the extension plate 9, and a guide groove 93 is provided on the side of the extension plate 9 facing the base plate 5. The bottom of the guide groove 93 penetrates the side wall of the extension plate 9, and the top of the guide groove 93 communicates with the threaded hole 92. The axis of the lead screw 53, the straight line where the guide groove 93 is located, and the axis of the threaded hole 92 are all in the same numerical plane. Moreover, the lead screw 53 extends to the bottom of the extension plate 9 and interferes with the straight line where the guide groove 93 is located. In this way, when the third cylinder 23 retracts downward and the extension plate 9 moves downward, the end of the lead screw 53 can reliably slide into the guide groove 93. When the threaded hole 92 and the lead screw 53 are coaxial (at this time, the top of the extension plate 9 is flush with the bottom of the base plate 5), the third cylinder 23 stops operating and the motor 52 starts, so that the extension plate 9 no longer moves down and the lead screw 53 forms a threaded connection with the threaded hole 92. In this way, as the lead screw 53 continues to rotate, the extension plate 9 will move horizontally and gradually approach the vertical end of the base plate 5 until the outer wall of the side of the extension plate 9 away from the vertical end of the base plate 5 is aligned with the outer wall of the horizontal end of the base plate 5.

[0033] Figure 5 It is a schematic three-dimensional representation of the movable frame and the machine frame. Figure 1 , Figure 6 It is a schematic three-dimensional representation of the movable frame and the machine frame. Figure 2 See also Figure 5 and Figure 6 A fixed plate 31 is provided at the top of the frame 3, and a vertical hydraulic cylinder 72 is fixed on the fixed plate 31. A movable frame 7 for fixing the pressure roller 6 is provided below the fixed plate 31. The movable frame 7 includes a movable plate 73 and a slide block 74. A limiting groove 731 is provided at the bottom of the movable plate 73, and a slide bar 732 is adapted to be provided in the limiting groove 731. The slide bar 732 can slide in the limiting groove 731. The bottom of the slide bar 732 is connected to the top of the slide block 74. The pressure roller 6 is provided on the slide block 74 and can rotate around itself. A support plate 75 for fixing the transverse hydraulic cylinder 71 is provided on the outer side of the movable plate 73.

[0034] Figure 7 This is a reference diagram showing the operational state of the movable frame. See also... Figure 7 and combined Figure 5 The push rod of the horizontal hydraulic cylinder 71 is connected to the slide 74 and is used to push the slide 74 to move horizontally. The push rod of the vertical hydraulic cylinder 72 is connected to the movable plate 73 and is used to push the movable plate 73 and the slide 74 to move vertically. The push rod of the vertical hydraulic cylinder 72 is connected to the top of the movable plate 73. When the vertical hydraulic cylinder 72 is activated, it can push the movable plate 73, the slide 74, the pressure roller 6, and the horizontal hydraulic cylinder 71 to move vertically simultaneously. The vertical hydraulic cylinder 72, the movable plate 73, and the support plate 75 form a fixing effect on the horizontal hydraulic cylinder 71. When the horizontal hydraulic cylinder 71 is activated, it can push the slide 74 to slide at the bottom of the movable plate 73. The cooperation between the slide bar 732 and the limiting groove 731 can ensure that the slide 74 can slide reliably and also serve to connect the slide 74, preventing the slide 74 from separating from the movable plate 73.

[0035] See Figure 2 and Figure 5The outer wall of the pressure roller 6 is provided with several pressure rings 60, each corresponding to a first forming groove 51. When the conveyor belt 1 drives a terminal 4 to be bent to move to the outside of the frame 3 and the spring piece 40 on the terminal 4 is above the first forming groove 51, the first cylinder 54 and the second cylinder 80 operate simultaneously, so that the bottom plate 5 and the extension plate 9 are flush at the top, and the spring piece 40 can fit against the top of the bottom plate 5. Then, the horizontal hydraulic cylinder 71 and the vertical hydraulic cylinder 72 operate in sequence, so that the pressure ring 60 can press against the root of the spring piece 40 (i.e., the end of the spring piece 40 near the terminal 4). The vertical hydraulic cylinder 72 continues to press down the pressure ring 60, so that the pressure ring 60 can press the root of the spring piece 40 into the first forming groove 51. At this time, if the spring piece 40 is in a straight state, the head of the spring piece 40 (i.e., the end of the spring piece 40 away from the terminal 4) will automatically enter the second forming groove 91 at the same time. When several spring pieces 40 are in a bent state, the pressure roller 6 is driven by the transverse hydraulic cylinder 71 to move away from the terminal 4. During this process, the pressure ring 60 will remain pressed into the first shaping groove 51 and the second shaping groove 91, which will press the spring pieces 40 bent outside the first shaping groove 51 or the second shaping groove 91 into the first shaping groove 51 and the second shaping groove 91. They can be rolled repeatedly, and finally the pressure ring 60 stays above the pressure plate, realizing the shaping effect of the spring pieces 40.

[0036] See Figure 3 and Figure 5 After the spring piece 40 is shaped, the third cylinder 23 retracts and the motor 52 rotates, causing the extension plate 9 to change from being flush with the top of the base plate 5 to being flush with the side wall of the base plate 5. Then, the horizontal hydraulic cylinder 71 drives the pressure ring 60 away from the pressure plate. When the side wall of the pressure plate is tangent to the pressure ring 60, the horizontal hydraulic cylinder 71 slowly moves a distance equal to the thickness of the spring piece 40. Then, the vertical hydraulic cylinder 72 actuates, allowing the pressure ring 60 to press against the spring piece 40 located on the outside of the base plate 5, making this part of the spring piece 40 fit against the outer side wall of the base plate 5, thus achieving the bending effect of the spring piece 40. The extension plate 9 is moved below the base plate 5, which is equivalent to increasing the thickness of the base plate 5, effectively improving the bending effect of the spring piece 40. Moreover, one set of actions can achieve the bending of all the spring pieces 40 on a terminal 4, significantly improving the bending efficiency.

[0037] When the extension plate 9 moves to the bottom of the horizontal end of the base plate 5 and the extension plate 9 and the base plate 5 are aligned on the side, the lead screw 53 will extend to the outside of the base plate 5 and the extension plate 9. The lead screw 53 is misaligned with the first forming groove 51, and the threaded hole 92 is misaligned with the second forming groove 91. In this way, when the pressure roller 6 and the pressure strip bend the spring sheet 40, the pressure strip and the spring sheet 40 will not interfere with the protruding lead screw 53, thus ensuring the reliability of the bending process.

[0038] See Figure 5 A pair of clamping plates 8, driven by second cylinders 80, are provided between the platform 2 and the conveyor belt 1. One second cylinder 80 is located above the spring piece 40 and connected to the fixing plate 31, while the other second cylinder 80 is located below the spring piece 40 and connected to the frame of the conveyor belt 1. The pair of second cylinders 80 push the pair of clamping plates 8 to move towards each other and clamp the spring piece 40. When the terminal 4 moves to the outside of the frame 3, the pair of second cylinders 80 extend, allowing the clamping plates 8 to reliably clamp the end of the spring piece 40. In this way, when the spring piece 40 is shaped and bent, the horizontal tension applied to the spring piece 40 will not cause the spring piece 40 to detach from the terminal 4.

[0039] This embodiment also discloses an automatic bending process for end-piece bullets.

[0040] The automatic bending process for end-piece bullets includes the following steps: S1. Arrange several terminals 4 sequentially on the conveyor belt 1 and convey them toward the frame 3; S2. When the spring piece 40 on the terminal 4 corresponds one-to-one with the first shaping groove 51 on the base plate 5, the first cylinder 54 pushes the base plate 5 upward, and then a pair of second cylinders 80 are activated, so that a pair of clamping plates 8 clamp the root of the spring piece 40 on the terminal 4. S3. The horizontal hydraulic cylinder 71 drives the pressure roller 6 to move above the root of the spring sheet 40, and then the vertical hydraulic cylinder 72 drives the pressure roller 6 to move downward. When the pressure roller 6 is in contact with the top of the base plate 5, the vertical hydraulic cylinder 72 stops moving. S4. The horizontal hydraulic cylinder 71 drives the pressure roller 6 to roll away from the base plate 5. When the pressure roller 6 moves to the outside of the pressure plate, the horizontal hydraulic cylinder 71 stops moving and the vertical hydraulic cylinder 72 drives the pressure roller 6 to move downward again, so that the spring piece 40 bends at the top plate of the base plate 5 and the side wall of the base plate 5. S5, the horizontal hydraulic cylinder 71 and the vertical hydraulic cylinder 72 drive the pressure roller 6 to reset, the second cylinder 80 drives the clamping plate 8 to reset, the first cylinder 54 drives the base plate 5 to reset, the conveyor belt 1 transports the next terminal 4 to be bent to the frame 3, and repeats the above steps to complete.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic bending device for bullet-shaped sheets, characterized in that, It includes a conveyor belt (1) and a frame (3) with a platform (2). The conveyor belt (1) is provided with a plurality of limiting plates (10). Two adjacent limiting plates (10) are adapted to be disposed at a terminal (4). A plurality of spring pieces (40) are inserted into a terminal (4). The top of the platform (2) is provided with a first receiving groove (21), and the first receiving groove (21) is provided with a base plate (5) driven by a first cylinder (54). A plurality of the spring pieces (40) are laid on the top of the base plate (5). The length of the base plate (5) is less than the length of the spring pieces (40). A pressure roller (6) is provided above the base plate (5). The pressure roller (6) presses against the top and side wall of the base plate (5). The pressure roller (6) is used to bend a plurality of the spring pieces (40) at the same time. A pair of clamping plates (8) driven by a second cylinder (80) are provided between the platform (2) and the conveyor belt (1). The pair of clamping plates (8) are used to clamp the end of the spring piece (40) near the terminal (4). The top of the base plate (5) is provided with a plurality of first shaping grooves (51). The first shaping grooves (51) penetrate the base plate (5). The end of the spring piece (40) near the terminal (4) is adapted to be located in the first shaping groove (51). The end of the spring piece (40) away from the terminal (4) extends to the outside of the base plate (5). The platform (2) is also provided with a second receiving groove (22) that communicates with the first receiving groove (21). An extension plate (9) is provided in the second receiving groove (22). The top of the extension plate (9) is provided with a second shaping groove (91) that communicates with the first shaping groove (51). The bottom of the platform (2) is provided with a third cylinder (23), which is used to push the extension plate (9) to reciprocate in the vertical direction. The bottom of the extension plate (9) and the push rod of the third cylinder (23) are connected by a magnet. The base plate (5) is in the shape of an inverted L. The first shaping groove (51) is located at the top of the horizontal end of the base plate (5). The vertical end of the base plate (5) is provided with a lead screw (53) driven by a motor (52). The bottom of the extension plate (9) is provided with a threaded hole (92), the lead screw (53) and the threaded hole (92) are in the same vertical plane, and the lead screw (53) can be adapted to be screwed into the threaded hole (92); The horizontal length of the base plate (5) is greater than the length of the extension plate (9). The extension plate (9) is provided with a guide groove (93) on the side facing the base plate (5). The bottom of the guide groove (93) penetrates the extension plate (9), and the top of the guide groove (93) communicates with the threaded hole (92). The lead screw (53) extends below the extension plate (9) and interferes with the straight line of the guide groove (93). The lead screw (53) is misaligned with the first shaping groove (51), and the threaded hole (92) is misaligned with the second shaping groove (91).

2. The automatic bending device for end-piece bullets according to claim 1, characterized in that, The pressure roller (6) is fixed on the movable frame (7). The outer side of the movable frame (7) is provided with a horizontal hydraulic cylinder (71) for driving the pressure roller (6) to move in the horizontal direction. The upper part of the movable frame (7) is provided with a vertical hydraulic cylinder (72) for driving the pressure roller (6) to move in the vertical direction.

3. The automatic bending device for end-piece bullets according to claim 2, characterized in that, The frame (3) is also provided with a fixing plate (31) for mounting a vertical hydraulic cylinder (72), and the movable frame (7) is located below the fixing plate (31); The movable frame (7) includes a movable plate (73) and a slide (74). The bottom of the movable plate (73) is provided with a limiting groove (731). A slide bar (732) is adapted to be provided in the limiting groove (731). The slide bar (732) can slide in the limiting groove (731). The bottom of the slide bar (732) is connected to the top of the slide (74). The pressure roller (6) is provided on the slide (74) and can rotate around itself. The outer side of the movable plate (73) is provided with a support plate (75) for installing a transverse hydraulic cylinder (71). The push rod of the horizontal hydraulic cylinder (71) is connected to the slide (74) and is used to push the slide (74) to move horizontally. The push rod of the vertical hydraulic cylinder (72) is connected to the movable plate (73) and is used to push the movable plate (73) and the slide (74) to move vertically.

4. The automatic bending device for end-piece bullets according to claim 3, characterized in that, One of the second cylinders (80) is located above the spring (40) and connected to the fixing plate (31), and the other of the second cylinders (80) is located below the spring (40) and connected to the frame of the conveyor belt (1). The pair of second cylinders (80) push the pair of clamping plates (8) to move towards each other and clamp the spring (40).

5. The automatic bending device for end-piece bullets according to claim 3, characterized in that, The outer wall of the pressure roller (6) is provided with a plurality of pressure rings (60), the number of pressure rings (60) being the same as the number of the first shaping grooves (51), and the pressure rings (60) being used to press against the spring sheet (40).

6. The automatic bending process for end-bullet sheets in the automatic bending equipment for end-bullet sheets according to claim 4, characterized in that, Includes the following steps: S1. Arrange several terminals (4) sequentially on the conveyor belt (1) and convey them toward the frame (3); S2. When the spring piece (40) on the terminal (4) corresponds one-to-one with the first shaping groove (51) on the base plate (5), the first cylinder (54) pushes the base plate (5) to move upward, and then a pair of second cylinders (80) act, so that a pair of clamping plates (8) clamp the root of the spring piece (40) on the terminal (4). S3. The horizontal hydraulic cylinder (71) drives the pressure roller (6) to move above the root of the spring sheet (40), and then the vertical hydraulic cylinder (72) drives the pressure roller (6) to move downward. When the pressure roller (6) is in contact with the top of the base plate (5), the vertical hydraulic cylinder (72) stops moving. S4. The horizontal hydraulic cylinder (71) drives the pressure roller (6) to roll away from the base plate (5). When the pressure roller (6) moves to the outside of the pressure plate, the horizontal hydraulic cylinder (71) stops moving and the vertical hydraulic cylinder (72) drives the pressure roller (6) to move downward again, so that the spring piece (40) bends at the top plate and the side wall of the base plate (5). S5. The horizontal hydraulic cylinder (71) and the vertical hydraulic cylinder (72) drive the pressure roller (6) to reset, the second cylinder (80) drives the clamping plate (8) to reset, the first cylinder (54) drives the base plate (5) to reset, the conveyor belt (1) transports the next terminal (4) to be bent to the frame (3), and repeats the above steps to complete.

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