Wire harness terminal crimping machine

Abstract

The application relates to the technical field of wire harness terminal crimping, in particular to a wire harness terminal crimping machine which comprises a machine base, the machine base comprises a base, two supporting plates installed on the base and a connecting block installed between the two supporting plates; a die is used for crimping a hardware head to the end of a wire to realize conduction connection; a driving structure is used for driving a sliding block to lift and realize punch crimping; a transparent protective cover is rotationally hinged to the lower part of a front shell at the upper part of the transparent protective cover, and an operation hole is arranged on the transparent protective cover; a trigger sensing component is triggered when the transparent protective cover is closed; the trigger sensing component is not triggered when the transparent protective cover is not closed; the driving structure does not work when the trigger sensing component is not triggered; the application improves the safety of machine use by arranging the trigger sensing component, the trigger sensing component can be triggered only when the transparent protective cover is closed, and the driving structure can work.

Description

Technical Field

[0001] This application relates to the field of wire harness terminal crimping technology, and more specifically, to a wire harness terminal crimping machine. Background Technology

[0002] A wire harness terminal crimping machine is a mechanical device used in wire processing to crimp metal terminals to the ends of wires to achieve conductive connections. It is applied in the processing of electronic wire harnesses, automotive wire harnesses, and new energy wire harnesses. Its working principle is divided into stepper type and servo drive type, which uses stamping to fix the terminals and wires, supporting non-welding rapid connection or disconnection.

[0003] Traditional wire harness terminal crimping machines typically have their crimping dies exposed, making it easy for operators to accidentally crush their hands if they mishandle them. To address this shortcoming, existing machines feature a hinged, transparent protective cover in front of the crimping die, with an operating hole on the cover. This allows operators to insert the wire harness into the die from outside the cover, preventing hand injury. However, when opening the cover to change the die or clean the worktable, accidental contact with the die can still occur, potentially causing injury. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of this application is to provide a wire harness terminal crimping machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: A wire harness terminal crimping machine includes a base, the base including a base plate, two support plates mounted on the base plate, and a connecting block mounted between the two support plates. A mold is used to press a metal head to the end of a wire to achieve a conductive connection. The mold includes a mold frame and a punch that is slidably connected to the mold frame in a vertical direction. A mold-locking structure is used to lock the lower part of the mold; the mold-locking structure is mounted on the base. A slider is provided on the front side of the connecting block in a vertical direction, and an adjustable lifting head is connected to the bottom of the slider. The lifting head is connected to the punch. The drive structure is used to drive the slider to rise and fall, thereby realizing the punch pressing; The front housing is located in front of the slider and connected to the support plate; A transparent protective cover is provided. The upper part of the transparent protective cover is rotatably hinged to the lower part of the front housing. The transparent protective cover is provided with an operating hole. When the transparent protective cover is closed, the operating hole is located directly in front of the mold. The trigger sensing component is activated when the transparent protective cover is closed; it is not activated when the transparent protective cover is not closed; and the drive structure does not operate when the trigger sensing component is not activated.

[0006] In one embodiment, the mold frame includes a lower block, an upper block, and a column connecting the lower block and the upper block. The punch is slidably mounted on the upper block in a vertical direction, and a base plate is fixedly installed at the bottom of the lower block.

[0007] In one embodiment, the locking mold structure includes a locking template mounted on a base, a positioning block fixedly mounted on one side of the top of the locking template, a movable block slidably connected to the top of the locking template, and an adjusting member for adjusting the movable block to move closer to or further away from the positioning block.

[0008] In one embodiment, the drive structure includes a motor, a reducer, a rotating shaft, and an eccentric wheel. The motor is mounted on the reducer, which is mounted inside the support plate. The rotating shaft is mounted inside the reducer, and the eccentric wheel is mounted at the front end of the rotating shaft. A rectangular groove is provided on the rear side of the slider, and a copper sleeve is fitted on the eccentric shaft on the front side of the eccentric wheel, with the copper sleeve located inside the rectangular groove.

[0009] In one embodiment, the top of the slider is provided with an oil injection hole communicating with the rectangular groove.

[0010] In one embodiment, the trigger sensing component includes a pressure sensor, a spring plate, and a pressure plate. The pressure sensor is installed on the front side of one of the support plates. The upper part of the spring plate is connected to the support plate, and the lower part of the spring plate is located in front of the pressure sensor. The pressure plate is fixedly installed inside the transparent protective cover. When the transparent protective cover is closed, the pressure plate abuts against the spring plate, pushing the spring plate to press against the pressure sensor.

[0011] In one embodiment, a control box is installed on the outside of one of the support plates. The control box contains a controller, and the pressure sensor and the motor are electrically connected to the controller. When the pressure sensor detects that the pressure value is less than zero, the controller controls the motor to stop working.

[0012] Compared with the prior art, the beneficial effects of this application are: This wire harness terminal crimping machine is equipped with a trigger sensing component. The trigger sensing component can only be activated when the transparent protective cover is closed, allowing the drive structure to operate. When the transparent protective cover is open, the drive structure cannot operate, thus improving the safety of machine use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this application.

[0014] Figure 2 For this application Figure 1 A schematic diagram of the structure when the transparent protective cover is opened.

[0015] Figure 3 For this application Figure 1 A structural diagram showing the structure after removing the top plate, front shell, and transparent protective cover.

[0016] Figure 4 For this application Figure 3 A magnified structural diagram of point A in the middle.

[0017] Figure 5 This is a schematic diagram of the mold located on the locking structure in this application.

[0018] Figure 6 This is one of the structural schematic diagrams of the mold in this application.

[0019] Figure 7 This is the second schematic diagram of the mold structure in this application.

[0020] Figure 8 This is a schematic diagram of the mold-locking structure in this application.

[0021] Figure 9 For this application Figure 3 An exploded view of the middle limit plate, slider, and connecting block.

[0022] Figure 10 This is an exploded view of the slider and drive structure in this application.

[0023] Figure 11 This is a schematic diagram of the slider from the rear side in this application.

[0024] Figure 12 This is a cross-sectional view of the slider and adjusting block in this application.

[0025] The meanings of the labels in the diagram are as follows: 10. Base; 11. Support plate; 12. Top plate; 13. Connecting block; 130. Protrusion; 131. Movable groove; 14. Slider; 140. Limiting groove; 141. Rectangular groove; 142. Oil injection hole; 143. Threaded groove; 144. Groove; 15. Limiting plate; 16. Lifting head; 160. Rotating column; 161. Hole groove; 162. Lifting head; 163. Threaded column; 17. Adjusting block; 20. Motor; 21. Reducer; 22. Rotating shaft; 23. Eccentric wheel; 24. Copper sleeve; 30. Mold locking structure; 300. Mold locking plate. 301. Slide groove; 302. Threaded rod; 303. Knob; 304. Moving block; 305. First inclined surface; 306. Positioning block; 307. Second inclined surface; 31. Mold; 310. Base plate; 311. Positioning groove; 312. Fourth inclined surface; 313. Lower block; 314. Upper block; 315. Punch; 316. Lifting groove; 317. Upper pressure knife; 318. Cutting knife holder; 40. Front housing; 41. Transparent protective cover; 410. Operating hole; 50. Control box; 60. Pressure sensor; 61. Spring plate; 62. Rotary wheel; 63. Mounting base; 64. Pressure plate. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] This application provides a technical solution: A wire harness terminal crimping machine, please refer to Figures 1-12 The device includes a base, which includes a base 10 and two support plates 11 fixedly mounted on the base 10. The two support plates 11 are arranged in parallel and located at the top rear of the base 10.

[0028] This application also includes a connecting block 13 fixedly installed between two support plates 11; a slider 14 is slidably provided on the front side of the connecting block 13 in the vertical direction. Specifically, two protrusions 130 are provided on the front side of the connecting block 13, and a movable groove 131 is formed between the two protrusions 130. The protrusions 130 and the connecting block 13 are an integral structure. The slider 14 is exactly placed between the two protrusions 130, that is, the slider 14 is exactly placed in the movable groove 131. The distance between the two protrusions 130 is equal to the horizontal length of the slider 14. Limiting grooves 140 are provided on both sides of the front side of the slider 14. When the slider 14 is placed in the movable groove 131, the front side of the protrusion 130 is exactly aligned with the limiting groove 140. Furthermore, two limiting plates 15 are provided, which are respectively placed on both sides of the slider 14, with one end of the limiting plate 15 placed in the limiting groove 140, so that the slider 14 can only slide in the vertical direction; two threaded holes are provided on the front side of the protrusion 130, and through holes are provided in the limiting plate 15, so that the internal hexagon bolt passes through the through holes and is threadedly connected to the threaded holes, which can fix the limiting plate 15; in order to hide the screwing end of the internal hexagon bolt, a circular groove is provided on the front side of the limiting plate 15 at the through hole, so that the screwing end of the internal hexagon bolt can be completely accommodated in the circular groove.

[0029] This application also includes a drive structure for driving the slider 14 to rise and fall; specifically, the drive structure includes a motor 20, a reducer 21, a rotating shaft 22, and an eccentric wheel 23. The motor 20 is mounted on the reducer 21, the reducer 21 is mounted inside the support plate 11, the rotating shaft 22 is mounted inside the reducer 21, the eccentric wheel 23 is mounted at the front end of the rotating shaft 22, a rear plate is mounted on the rear side of the two support plates 11, the rear end of the rotating shaft 22 passes through the rear plate and is rotatably connected to the rear plate, a rectangular groove 141 is provided on the rear side of the slider 14, a copper sleeve 24 is sleeved on the eccentric shaft on the front side of the eccentric wheel 23, the copper sleeve 24 is located in the rectangular groove 141, the upper and lower parts of the copper sleeve 24 are planar and can be perfectly fitted in the rectangular groove 141; a circular hole communicating with the movable groove 131 is provided in the connecting block 13, and the eccentric wheel is rotatably located in the circular hole.

[0030] When the starter motor 20 is working, the reducer 21 will drive the rotating shaft 22 to rotate, thereby driving the eccentric wheel to rotate. The copper sleeve 24 will drive the slider 14 to move up and down and slide within the movable groove 131.

[0031] The top of the slider 14 is provided with an oil injection hole 142 that communicates with the rectangular groove 141. Lubricating oil can be added through the oil injection hole 142 and enter the rectangular groove 141 to lubricate the copper sleeve 24. Furthermore, the sides of the slider 14 are provided with holes that communicate with the oil injection hole 142, allowing the lubricating oil to enter the movable groove 131, thereby making the slider 14 slide more smoothly.

[0032] The wire harness terminal crimping machine in this application also includes a mold 31 for crimping the hardware head to the end of the wire to achieve a conductive connection. It is worth noting that the mold is a conventional existing technology, and different types of molds can be replaced according to the actual needs of terminal crimping. In this application, a single mold is used as an example: Specifically, the mold 31 includes a mold frame and a punch 315 that is slidably connected to the mold frame in the vertical direction; the mold frame includes a lower block 313, an upper block 314, and a column connecting the lower block 313 and the upper block 314. The column, the lower block 313, and the upper block 314 are an integral structure. The punch 315 is slidably mounted on the upper block 314 in the vertical direction. A base plate 310 is fixedly installed at the bottom of the lower block 313. An upper pressure knife 317 is installed at the lower part of the punch 315. A cutter seat 318 is installed on the lower block 313. The terminal is placed on the wire harness and placed on the cutter seat 318. Then the upper pressure knife 317 presses down on the terminal to achieve crimping.

[0033] It also includes a locking structure 30 installed on the base 10, which is used to lock the lower part of the mold 31. Specifically, the locking structure 30 includes a locking template 300 installed on the base 10. The locking template 300 is arranged along the length of the base 10. A positioning block 306 is fixedly installed on one side of the top of the locking template 300. A moving block 304 is slidably connected to the top of the locking template 300. It also includes an adjusting member for adjusting the movement of the moving block 304 towards or away from the positioning block 306.

[0034] The base plate 310 has a fourth inclined surface 312 on the side near the positioning block 306, and the positioning block 306 has a second inclined surface 307 on the side near the base plate 310. The second inclined surface 307 is adapted to the fourth inclined surface 312. The moving block 304 has a first inclined surface 305 on the side near the base plate 310, and the base plate 310 has a positioning groove 311 on the side near the moving block 304. The width of the positioning groove 311 is slightly larger than the width of the moving block 304. The positioning groove 311 has a third inclined surface adapted to the first inclined surface 305. During installation, the base plate 310 at the bottom of the mold 31 is placed on top of the locking template 300. First, the fourth inclined surface 312 of the base plate 310 abuts against the second inclined surface 307 of the positioning block 306. Then, the moving block 304 is moved closer to the base plate 310 by adjusting the adjusting component, so that the moving block 304 moves into the positioning groove 311 and presses the base plate 310 against it.

[0035] Furthermore, the adjusting component includes a slide groove 301 formed on the top of the locking template 300, the slide groove 301 being arranged along the length direction of the locking template 300, the lower part of the moving block 304 being slidably connected in the slide groove 301, and also includes a threaded rod 302 provided in the slide groove 301, one end of the threaded rod 302 being rotatably connected to the moving block 304, the other end of the threaded rod 302 extending outside the slide groove 301, the middle part of the threaded rod 302 being threadedly connected to the locking template 300 (the threaded pair of the threaded connection between the threaded rod 302 and the locking template 300 is large enough that the threaded rod will not rotate during actual use), and a knob 303 is fixedly connected to the other end of the threaded rod 302, rotating the knob 303 causing the threaded rod 302 to rotate, which can push the moving block 304 to move in the slide groove 301.

[0036] The bottom of the slider 14 is connected to an adjustable lifting head 16, which is connected to the punch 315. When the slider 14 rises or falls, it drives the lifting head 16 to rise or fall, which in turn drives the punch 315 to rise or fall, thereby achieving the pressing of the punch 315.

[0037] The connection between the slider 14 and the lifting head 16 here is a conventional technology, which is briefly described below for ease of understanding: Specifically, the lifting head component 16 includes a rotating column 160, a threaded column 163, and a lifting head 162. The threaded column 163 and the lifting head 162 are respectively fixed at the top and bottom of the rotating column 160. The bottom of the slider 14 is provided with a threaded groove 143, and the threaded column 163 is threadedly connected in the threaded groove 143. The top of the punch 315 is provided with a lifting groove 316, and one side of the lifting groove 316 is connected to the outside, so that the lifting head 162 can slide into the lifting groove 316. It is worth noting that the dimensions of the lifting head 162 and the lifting groove 316 are matched, and both of them have an inverted T-shaped cross section. When the lifting head 162 slides into the lifting groove 316, the lifting head 162 will not slide out of the lifting groove 316 in the vertical direction.

[0038] During actual installation, first align the lifting groove 316 on the punch 315 with the lifting head 162 and slide it in, then place the base plate 310 on the locking template 300 and lock it in place.

[0039] To facilitate adjustment of the starting height position of the upper pressure knife 317, the threaded column 163 can be raised and lowered within the threaded groove 143 by rotating the rotating column 160, which in turn drives the lifting head 162 and the punch 315 to rise and fall, thereby adjusting the starting height position of the upper pressure knife 317.

[0040] To facilitate the rotation of the rotating column 160, multiple slots 161 are formed circumferentially on the side wall of the rotating column 160. The end of the wrench is inserted into the slot 161 to facilitate the rotation of the rotating column 160. The actual product has a scale on the circumferential direction of the rotating column 160. According to the pre-designed threaded column 163, the threaded column 163 will rise 0.05mm in height for each scale mark rotated to the right (i.e., counterclockwise). Similarly, the threaded column 163 will fall 0.05mm in height for each scale mark rotated to the left (i.e., clockwise). This allows for the adjustment of the starting height position of the upper pressure knife 317.

[0041] It should be added that a groove 144 is provided on the front side of the slider 14, and the threaded groove 143 communicates with the groove 144, forming an arc-shaped opening at the connection point. This allows part of the shaft wall of the threaded column 163 to be located within the threaded groove 143. An adjusting block 17, which is adapted to the shape of the groove 144, is also included. The adjusting block 17 has an arc-shaped groove surface near the arc-shaped opening, and through holes are provided on both sides of the arc-shaped groove surface. The inner wall of the groove 144 has threads on both sides of the arc-shaped opening corresponding to the positions of the through holes. The hole and threaded hole are not connected to the threaded groove 143. It also includes an internal hex bolt. The internal hex bolt passes through the through hole and is threadedly connected to the threaded hole. When the internal hex bolt is tightened, the arc-shaped groove surface of the adjusting block 17 is pressed against the threaded post 163. At this time, the threaded post 163 cannot be rotated to adjust the height. When the internal hex bolt is loosened (the hex bolt is not completely disengaged from the threaded hole), the arc-shaped groove surface of the adjusting block 17 will disengage and not be in contact with the threaded post 163. At this time, it is convenient to rotate the rotating post 160 to drive the threaded post 163 to adjust the height.

[0042] In this application, a top plate 12 is bolted to the top between the two support plates 11. The top plate 12 has an opening through which the motor 20 can pass.

[0043] This application also includes a front housing 40, which is located in front of the slider 14 and is bolted to the support plate 11.

[0044] A transparent protective cover 41 is provided below the front housing 40 and in front of the mold 31. The upper part of the transparent protective cover 41 is rotatably hinged to the lower part of the front housing 40. The transparent protective cover 41 is provided with an operating hole 410. When the transparent protective cover 41 is closed, the operating hole 410 is located directly in front of the mold 31. In this way, when the transparent protective cover 41 is closed, the operator can directly insert the wire into the mold through the operating hole 410 to operate, so that the operator's hand will not be inserted into the mold 31, thus improving safety protection.

[0045] In this application, a trigger sensing component is also provided. When the transparent protective cover 41 is closed, the trigger sensing component is triggered; when the transparent protective cover 41 is not closed, the trigger sensing component is not triggered; when the trigger sensing component is not triggered, the drive structure does not work; in this way, the drive structure is less likely to work when the transparent protective cover 41 is open, thus improving safety.

[0046] Specifically, the trigger sensing components include a pressure sensor 60, a spring plate 61, and a pressure plate 64. The pressure sensor 60 is installed on the front side of one of the support plates 11. The upper part of the spring plate 61 is connected to the support plate 11. Specifically, a mounting base 63 is fixedly connected to the support plate 11. The upper part of the spring plate 61 is fixedly installed on the mounting base 63, and the lower part of the spring plate 61 is located in front of the pressure sensor 60. The pressure plate 64 is fixedly installed inside the transparent protective cover 41. When the transparent protective cover 41 is closed, the pressure plate 64 abuts against the spring plate 61, pushing the spring plate 61 to press against the pressure sensor 60.

[0047] Furthermore, a rotating wheel 62 is rotatably mounted on the lower front side of the spring plate 61. The rotating wheel 62 is made of plastic. When the transparent protective cover 41 is closed, the pressure plate 64 abuts against the rotating wheel 62, pushing the spring plate 61 to press against the pressure sensor 60.

[0048] A control box 50 is installed on the outside of one of the support plates 11. The control box 50 contains a controller and a power supply. The pressure sensor 60 and the motor 20 are both electrically connected to the power supply and the controller. When the pressure sensor 60 detects a pressure value less than zero, the controller controls the motor 20 to not work. Thus, the motor 20 can only start working when the pressure sensor 60 detects a pressure value greater than zero (i.e., the transparent protective cover 41 is closed). This avoids accidental triggering of the machine and improves safety. The control box 50 has a switch on its panel to control the motor 20. Of course, when the pressure sensor 60 detects a pressure value less than zero, the motor 20 will not work when the switch is turned on.

[0049] It is worth noting that in actual use, a light (not shown in the figure) will be installed at the control box 50 position. The light can be electrically connected to the power supply and is connected through a gooseneck tube, which makes it easy to adjust the light to shine on the mold 31 from the side, which is convenient for the workers to operate.

[0050] It is worth noting that the wire harness terminal crimping machine in this application needs to be used on a workbench.

Claims

1. A wire harness terminal crimping machine, characterized in that, include: The base includes a base (10), two support plates (11) mounted on the base (10), and a connecting block (13) mounted between the two support plates (11). The mold (31) is used to press the hardware head to the end of the wire to achieve a conductive connection. The mold (31) includes a mold frame and a punch (315) that is slidably connected to the mold frame in the vertical direction. A locking structure (30) is used to lock the lower part of the mold (31), and the locking structure (30) is mounted on the base (10); A slider (14) is provided on the front side of the connecting block (13) in the vertical direction. The bottom of the slider (14) is connected to a lifting head (16) that can be raised and lowered. The lifting head (16) is connected to the punch (315). The driving structure is used to drive the slider (14) to rise and fall, thereby realizing the pressing of the punch (315); The front housing (40) is located in front of the slider (14) and connected to the support plate (11); A transparent protective cover (41) is provided. The upper part of the transparent protective cover (41) is rotatably hinged to the lower part of the front housing (40). An operation hole (410) is provided on the transparent protective cover (41). When the transparent protective cover (41) is closed, the operation hole (410) is located in front of the mold (31). The trigger sensing component is triggered when the transparent protective cover (41) is closed; the trigger sensing component is not triggered when the transparent protective cover (41) is not closed; and the drive structure does not work when the trigger sensing component is not triggered.

2. The wire harness terminal crimping machine according to claim 1, characterized in that: The mold frame includes a lower block (313), an upper block (314), and a column connecting the lower block (313) and the upper block (314). The punch (315) is slidably mounted on the upper block (314) in the vertical direction. The bottom plate (310) is fixedly installed on the bottom of the lower block (313).

3. The wire harness terminal crimping machine according to claim 1, characterized in that: The locking structure (30) includes a locking template (300) mounted on a base (10), a positioning block (306) fixedly mounted on one side of the top of the locking template (300), a moving block (304) slidably connected to the top of the locking template (300), and an adjusting member for adjusting the movement of the moving block (304) closer to or further away from the positioning block (306).

4. A wire harness terminal crimping machine according to claim 1, characterized in that: The drive structure includes a motor (20), a reducer (21), a rotating shaft (22), and an eccentric wheel (23). The motor (20) is mounted on the reducer (21), the reducer (21) is mounted inside the support plate (11), the rotating shaft (22) is mounted inside the reducer (21), the eccentric wheel (23) is mounted at the front end of the rotating shaft (22), a rectangular groove (141) is provided on the rear side of the slider (14), and a copper sleeve (24) is fitted on the eccentric shaft on the front side of the eccentric wheel (23), and the copper sleeve (24) is located in the rectangular groove (141).

5. A wire harness terminal crimping machine according to claim 4, characterized in that: The top of the slider (14) is provided with an oil injection hole (142) that communicates with the rectangular groove (141).

6. A wire harness terminal crimping machine according to claim 5, characterized in that: The trigger sensing components include a pressure sensor (60), a spring plate (61), and a pressure plate (64). The pressure sensor (60) is installed on the front side of one of the support plates (11). The upper part of the spring plate (61) is connected to the support plate (11), and the lower part of the spring plate (61) is located in front of the pressure sensor (60). The pressure plate (64) is fixedly installed inside the transparent protective cover (41). When the transparent protective cover (41) is closed, the pressure plate (64) abuts against the spring plate (61) and pushes the spring plate (61) to press against the pressure sensor (60).

7. A wire harness terminal crimping machine according to claim 6, characterized in that: A control box (50) is installed on the outside of one of the support plates (11). The control box (50) contains a controller. The pressure sensor (60) and the motor (20) are electrically connected to the controller. When the pressure sensor (60) detects that the pressure value is less than zero, the controller controls the motor (20) to stop working.

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