A terminal punching machine

Abstract

The present invention discloses a terminal crimping machine, comprising: a frame, on which a fixed die assembly and a movable die assembly movably arranged above the fixed die assembly are provided; a lever arm rotatably connected to the frame, one end of the lever arm being connected to the movable die assembly via a connecting rod slider mechanism to drive the movable die assembly to move up and down relative to the fixed die assembly, and the other end of the lever arm being transmission-connected to a driving device that drives the lever arm to swing up and down. The lever arm is a labor-saving lever. The terminal crimping machine drives the lever arm to swing by a driving device, and drives the movable die assembly to move close to the fixed die assembly via a connecting rod slider mechanism to clamp the terminal to the end of the wire. Compared with the method of using a driving device to directly drive the movable die assembly to move, the terminal crimping machine can provide greater downward pressure and more stable force application, thereby ensuring that the terminal is firmly installed at the end of the wire, and has a faster response speed and higher working efficiency than a hydraulic cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of wire processing equipment, in particular to a wire end punching machine. Background Art

[0002] In the related art, it is often necessary to set terminals at both ends of the wire to facilitate the connection of electrical appliances. During production and processing, the wires of a certain length are first stripped at both ends to expose the inner core, and then the terminals are riveted and fixed to the inner core at both ends of the wire using a terminal punching machine.

[0003] However, in actual production, the common practice is to use a lifting device such as a hydraulic cylinder to press the terminal onto the end of the wire. This method places a heavy load on the lifting device, which can easily damage it, and the downward pressure distance is difficult to accurately control. Furthermore, while the hydraulic cylinder can provide a large downward force, the downward pressure fluctuates greatly and the movement speed is slow, which is not conducive to improving production efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the object of the present invention is to provide a terminal beating machine that can provide greater downward force, stable force application, and high working efficiency.

[0005] According to an embodiment of the present invention, a terminal crimping machine includes: a frame, on which a fixed mold assembly and a movable mold assembly movably arranged above the fixed mold assembly are provided; a lever arm rotatably connected to the frame, one end of the lever arm is connected to the movable mold assembly through a connecting rod slider mechanism to drive the movable mold assembly to move up and down relative to the fixed mold assembly, and the other end of the lever arm is transmission-connected to a driving device that drives the lever arm to swing up and down.

[0006] A terminal punching machine according to an embodiment of the present invention has at least the following beneficial effects:

[0007] The terminal crimping machine of the above structure is driven by a driving device to drive the end of the lever arm connected to the driving device to swing upward, thereby driving the end of the lever arm connected to the connecting rod slider mechanism to swing downward, and the connecting rod slider mechanism drives the movable mold assembly to move close to the fixed mold assembly to clamp the terminal to the end of the wire. Compared with the method of using the driving device to directly drive the movable mold assembly to move, the above terminal crimping machine can provide greater downward pressure and more stable force, thereby ensuring that the terminal is firmly installed at the end of the wire, and has a faster response speed and higher working efficiency than the hydraulic cylinder.

[0008] In some embodiments of the present invention, the driving device includes a linear drive, the output end of the linear drive is connected to a driving member that can move back and forth in the up and down directions, and the end of the lever arm is provided with a guide slot hole that cooperates with the driving member. When the driving member moves back and forth in the up and down directions, the driving member moves in the guide slot hole to drive the lever arm to swing upward or downward.

[0009] In some embodiments of the present invention, a first side plate and a second side plate parallel to each other are spaced apart at one end of the lever arm away from the connecting rod slider mechanism, and the first side plate and the second side plate are both provided with a guide slot hole, and a lifting block is provided at the output end of the linear drive, and the lifting block is slidably arranged between the first side plate and the second side plate, and the lifting block is provided with the driving member extending into the guide slot hole on both sides of the first side plate and the second side plate.

[0010] In some embodiments of the present invention, the guide slot is a long through hole, the driving member is a column portion passing through the guide slot, a roller is provided at the end of the column portion for axial rotation around the column portion, and the side wall of the roller faces the first side plate or the second side plate to limit the column portion from detaching from the long through hole, and a vertical guide slot is provided on the frame for the roller to slide up and down.

[0011] In some embodiments of the present invention, the ends of the first side panel and the second side panel are provided with a U-shaped groove, the column portion can enter the U-shaped groove along the opening of the U-shaped groove, and the first side panel and the second side panel can be detachably installed with an end plate capable of closing the opening of the U-shaped groove, and the end plate and the U-shaped groove define the guide slot hole.

[0012] In some embodiments of the present invention, the linear drive includes a motor, the output shaft of the motor is connected to a reduction gearbox, the output shaft of the reduction gearbox is connected to a lead screw, and the lifting block is provided with an internal threaded through hole matching the lead screw.

[0013] In some embodiments of the present invention, the frame is provided with a first sensor located below the driving member and a second sensor located above the driving member, the driving member is provided with a first sensing part capable of triggering the first sensor and a second sensing part capable of triggering the second sensor, the motor, the first sensor, and the second sensor are connected to a control unit, and the control unit is used to control the start and stop and rotation direction of the motor.

[0014] In some embodiments of the present invention, the connecting rod slider mechanism includes a connecting rod and a slider, one end of the connecting rod is rotatably connected to the end of the lever arm away from the driving device, and the other end of the connecting rod is rotatably connected to the slider, and the slider is arranged on the frame to slide in the up and down directions. The slider is fixedly connected to the movable mold assembly, and the fixed mold assembly is provided with a vertical guide rod passing through the movable mold assembly, and the vertical guide rod is provided with a return spring for driving the movable mold assembly upward away from the fixed mold assembly.

[0015] In some embodiments of the present invention, a first movable clamping assembly is provided on the fixed mold assembly, and a second movable clamping assembly is provided on the movable mold assembly. When the movable mold assembly is close to the fixed mold assembly, the first movable clamping assembly and the second movable clamping assembly can approach each other to clamp the terminal to the end of the wire. The side of the fixed mold assembly or the movable mold assembly is provided with an end face positioning mechanism for positioning the end of the wire.

[0016] In some embodiments of the present invention, the end face positioning mechanism includes a bracket fixed to the side of the fixed mold assembly, a cylinder is provided on the bracket, a flat plate is provided at the protruding end of the cylinder, a mounting hole is provided on the side of the cylinder, and the bracket is provided with a waist-shaped hole opposite to the mounting hole, and the length direction of the waist-shaped hole extends along the telescopic direction of the cylinder.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 A schematic structural diagram of an embodiment of a terminal crimping machine of the present invention;

[0020] Figure 2 for Figure 1 A structural schematic diagram of the embodiment from another perspective;

[0021] Figure 3 for Figure 1 An enlarged schematic diagram of part A of the embodiment;

[0022] Figure 4 for Figure 1 A schematic structural diagram of the combination of a first movable clamping assembly on the fixed mold assembly and a second movable clamping assembly on the movable mold assembly in an embodiment. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] See also Figure 1 and Figure 2 The present invention provides a terminal crimping machine, comprising: a frame 100, on which is mounted a fixed die assembly 200 and a movable die assembly 300 movably disposed above the fixed die assembly 200; a lever arm 400 rotatably connected to the frame 100, one end of the lever arm 400 being connected to the movable die assembly 300 via a connecting rod and slider mechanism to drive the movable die assembly 300 to move up and down relative to the fixed die assembly 200, and the other end of the lever arm 400 being transmission-connected to a driving device 500 for driving the lever arm 400 to swing up and down. The lever arm 400 is a labor-saving lever.

[0028] The terminal crimping machine of the above structure is driven by the driving device 500 to drive the end of the lever arm 400 connected to the driving device 500 to swing upward, thereby driving the end of the lever arm 400 connected to the connecting rod slider mechanism to swing downward, and the movable mold assembly 300 is driven by the connecting rod slider mechanism to move close to the fixed mold assembly 200 to clamp the terminal to the end of the wire. Compared with the method of using the driving device 500 to directly drive the movable mold assembly 300 to move, the above terminal crimping machine can provide greater downward pressure and more stable force, thereby ensuring that the terminal is firmly installed at the end of the wire, and has a faster response speed and higher working efficiency than the hydraulic cylinder.

[0029] See also Figure 1 and Figure 2 In some embodiments of the present invention, the driving device 500 includes a linear driver 510, the output end of the linear driver 510 is connected to a driving member 520 that can move back and forth in the up and down directions, and the end of the lever arm 400 is provided with a guide slot hole 410 that cooperates with the driving member 520. When the driving member 520 moves back and forth in the up and down directions, the driving member 520 moves in the guide slot hole 410 to drive the lever arm 400 to swing upward or downward. It is understood that when the linear actuator 510 drives the driving member 520 upward, the driving member 520 moves within the guide slot 410 to drive one end of the lever arm 400 to swing upward, thereby causing the other end of the lever arm 400 to swing downward, thereby driving the connecting rod slider mechanism to move the movable mold assembly 300 downward; when the linear actuator 510 drives the driving member 520 downward, the driving member 520 moves within the guide slot 410 to drive one end of the lever arm 400 to swing downward, thereby causing the other end of the lever arm 400 to swing upward, thereby driving the connecting rod slider mechanism to move the movable mold assembly 300 upward. The above structure converts linear motion into the swinging motion of the lever arm 400, which helps simplify the structure of the driving device 500 and reduce the cost of the transmission part.

[0030] See also Figure 1 and Figure 2In some embodiments of the present invention, a first side plate 420 and a second side plate 430 are arranged parallel to each other at one end of the lever arm 400 away from the connecting rod slider mechanism. The first side plate 420 and the second side plate 430 are both provided with a guide slot 410. A lifting block 530 is provided at the output end of the linear drive 510. The lifting block 530 is slidably arranged between the first side plate 420 and the second side plate 430. A driving member 520 extending into the guide slot 410 is provided on both sides of the lifting block 530 facing the first side plate 420 and the second side plate 430. It can be understood that the gap between the first side plate 420 and the second side plate 430 has a sliding guiding effect on the lifting block 530. The two driving members 520 located on the opposite sides of the lifting block 530 respectively cooperate with the guide slots 410 on the first side plate 420 and the guide slots 410 on the second side plate 430, which is beneficial to improving the transmission stability of the output end of the linear drive 510 and the lever arm 400 and the moving accuracy of the relative motion, thereby ensuring the stability of the downward pressing distance of the movable mold assembly 300.

[0031] See also Figure 1 and Figure 2 In some embodiments of the present invention, the guide slot 410 is an elongated through-hole, and the driving member 520 is a column portion that passes through the guide slot 410. A roller 540 is provided at the end of the column portion so as to rotate around the axis of the column portion. The sidewall of the roller 540 faces the first side plate 420 or the second side plate 430 to prevent the column portion from disengaging from the elongated through-hole. The frame 100 is provided with a vertical guide slot 110 for the roller 540 to slide up and down. Preferably, the diameter of the column portion is consistent with the slot width of the guide slot 410. During the up and down movement of the lifting block 530, the roller 540 at the end of the column portion serves as a lifting guide. Moreover, the relative rotation of the roller 540 relative to the column portion helps to reduce the friction between the roller 540 and the vertical guide slot 110. At the same time, the provision of the roller 540 can also prevent the column portion from disengaging from the elongated through-hole, achieving a dual purpose.

[0032] See also Figure 1 and Figure 2 In some embodiments of the present invention, the ends of the first side plate 420 and the second side plate 430 are each provided with a U-shaped notch, and the column portion can enter the U-shaped notch along the opening of the U-shaped notch. The first side plate 420 and the second side plate 430 are each detachably mounted with an end plate 440 capable of closing the opening of the U-shaped notch. The end plate 440 and the U-shaped notch define a guide slot 410. It will be understood that after the roller 540 and the column portion are assembled together, the column portion can enter the U-shaped notch along the opening of the U-shaped notch, and the opening of the U-shaped notch can then be closed using the end plate 440, which facilitates both installation and disassembly and maintenance.

[0033] See also Figure 2In some embodiments of the present invention, the linear drive 510 includes a motor 511, the output shaft of the motor 511 is connected to a reduction gearbox 512, the output shaft of the reduction gearbox 512 is connected to a lead screw 513, and the lifting block 530 is provided with an internal threaded through hole that cooperates with the lead screw 513. It should be noted that the motor 511 drives the lead screw 513 to rotate, thereby driving the driving member 520 to move up and down with high precision, and the speed of the downward movement of the movable mold assembly 300 can be adjusted by controlling the rotation speed of the motor 511. For example, when the movable mold assembly 300 is at the upper end of its working stroke, the motor 511 rotates rapidly to drive the movable mold assembly 300 to quickly approach the fixed mold assembly 200, and then the rotation speed of the motor 511 is reduced to rivet the terminal to the end of the wire, which is conducive to improving production efficiency.

[0034] See also Figure 1 In some embodiments of the present invention, the frame 100 is provided with a first sensor 120 located below the driving member 520 and a second sensor 130 located above the driving member 520. The driving member 520 is provided with a first sensing portion 521 capable of triggering the first sensor 120 and a second sensing portion 522 capable of triggering the second sensor 130. The motor 511, the first sensor 120, and the second sensor 130 are connected to a control unit, which is used to control the start and stop and rotation direction of the motor 511. It should be noted that when the driving member 520 moves to the second sensing portion 522 to trigger the second sensor 130, the distance between the movable mold assembly 300 and the fixed mold assembly 200 is minimized, and the terminals are clamped and fixed to the conductive ends. At this time, the control unit controls the motor 511 to stop rotating to prevent the motor 511 from burning out and also to avoid damage to other components. When the driving member 520 moves to the first sensing portion 521 to trigger the first sensor 120, the distance between the movable mold assembly 300 and the fixed mold assembly 200 is the largest. At this time, the wire with the terminal can be taken out or placed. At this time, the control unit controls the motor 511 to stop rotating to prevent the distance between the movable mold assembly 300 and the fixed mold assembly 200 from being too large and reducing work efficiency.

[0035] See also Figure 2In some embodiments of the present invention, the connecting rod and slider mechanism includes a connecting rod 610 and a slider 620. One end of the connecting rod 610 is rotatably connected to the end of the lever arm 400 away from the drive device 500. The other end of the connecting rod 610 is rotatably connected to the slider 620. The slider 620 is mounted on the frame 100 and slides vertically. The slider 620 is fixedly connected to the movable mold assembly 300. The fixed mold assembly 200 is provided with a vertical guide rod extending through the movable mold assembly 300. The vertical guide rod is equipped with a return spring for driving the movable mold assembly 300 upward and away from the fixed mold assembly 200. It can be understood that the lever arm 400, the connecting rod 610, and the slider 620 form a crank-connecting rod and slider mechanism within a planar four-bar linkage, which can stably drive the movable mold assembly 300 to move back and forth. When the movable mold assembly 300 approaches the fixed mold assembly 200 to press the terminal against the wire, the return spring can then move the movable mold assembly 300 upward and away from the fixed mold assembly 200.

[0036] See also Figure 2 and Figure 4 In some embodiments of the present invention, a first movable clamping assembly 210 is provided on the fixed mold assembly 200, and a second movable clamping assembly 310 is provided on the movable mold assembly 300. When the movable mold assembly 300 approaches the fixed mold assembly 200, the first movable clamping assembly 210 and the second movable clamping assembly 310 can move closer to each other to clamp the terminal to the end of the wire. An end face positioning mechanism 700 for positioning the end of the wire is provided on the side of the fixed mold assembly 200 or the movable mold assembly 300. It should be noted that the end face positioning mechanism 700 can abut against the terminal to position the terminal at a preset position on the end of the wire, preventing the terminal from moving relative to the wire during transportation or pressing.

[0037] See also Figure 4In this embodiment, the first movable clamping assembly 210 includes a first wedge block 211 fixed to the fixed mold assembly 200, a second wedge block 212 and a third wedge block 213 slidably provided on the fixed mold assembly 200 through an elastic member, and the second movable clamping assembly 310 includes a fourth wedge block 311 fixed to the movable mold assembly 300, a fifth wedge block 312 and a sixth wedge block 313 slidably provided on the movable mold assembly 300 through an elastic member. The first wedge block 211, the second wedge block 212, the third wedge block 213, the fourth wedge block 311, the fifth wedge block 312 and the sixth wedge block 313 can together form a hexagonal clamping cavity. When movable mold assembly 300 presses downward against fixed mold assembly 200, second and third wedge blocks 212 and 213 move toward compressing the corresponding elastic members. Fifth and sixth wedge blocks 312 and 313 also move toward compressing the corresponding elastic members. The hexagonal clamping cavity gradually shrinks, clamping the terminal securely to the wire. The first and second movable clamping assemblies 210 and 310 are well-known fixture structures to those skilled in the art and will not be described further here.

[0038] See also Figure 3 In some embodiments of the present invention, the end face positioning mechanism 700 includes a bracket 710 fixed to the side of the fixed mold assembly 200. A cylinder 720 is mounted on the bracket 710. A flat plate 730 is mounted at the protruding end of the cylinder 720. A mounting hole 721 is provided on the side of the cylinder 720. The bracket 710 is provided with a waist-shaped hole 711 opposite the mounting hole 721. The length of the waist-shaped hole 711 extends along the extension and contraction direction of the cylinder 720. It will be appreciated that the extension distance of the flat plate 730 can be adjusted by inserting bolts through the waist-shaped hole 711 and the mounting hole 721, thereby accommodating riveting requirements of different specifications.

[0039] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A terminal crimping machine, characterized in that: include: A frame (100), wherein a fixed mold assembly (200) and a movable mold assembly (300) movably arranged above the fixed mold assembly (200) are provided on the frame (100); The lever arm (400) is rotatably connected to the frame (100), one end of the lever arm (400) is connected to the movable mold assembly (300) through a connecting rod slider mechanism to drive the movable mold assembly (300) to move up and down relative to the fixed mold assembly (200), and the other end of the lever arm (400) is transmission-connected to a driving device (500) for driving the lever arm (400) to swing up and down; the driving device (500) includes a linear driver (510), and the output end of the linear driver (510) is connected to a driving member (520) that can reciprocate in the up and down directions. The end portion is provided with a guide slot (410) that matches the driving member (520). When the driving member (520) moves back and forth in the up and down directions, the driving member (520) moves in the guide slot (410) to drive the lever arm (400) to swing upward or downward. The lever arm (400) is provided with a first side plate (420) and a second side plate (430) that are parallel to each other at an interval at one end away from the connecting rod slider mechanism. The first side plate (420) and the second side plate (430) are both provided with a guide slot (410). The output end of the linear driver (510) is provided with a lifting block. (530), the lifting block (530) is slidably arranged between the first side plate (420) and the second side plate (430), and the lifting block (530) is provided with the driving member (520) extending into the guide slot (410) on both sides of the first side plate (420) and the second side plate (430); the linear drive (510) includes a motor (511), the output shaft of the motor (511) is connected to a reduction box (512), the output shaft of the reduction box (512) is connected to a lead screw (513), and the lifting block (530) is provided with an inner ring matched with the lead screw (513). A threaded through hole; a first sensor (120) located below the driving member (520) and a second sensor (130) located above the driving member (520) are provided on the frame (100); a first sensing portion (521) capable of triggering the first sensor (120) and a second sensing portion (522) capable of triggering the second sensor (130) are provided on the driving member (520); the motor (511), the first sensor (120), and the second sensor (130) are connected to a control unit; the control unit is used to control the start and stop and the rotation direction of the motor (511);The fixed mold assembly (200) is provided with a first movable clamping assembly (210), and the movable mold assembly (300) is provided with a second movable clamping assembly (310). When the movable mold assembly (300) is close to the fixed mold assembly (200), the first movable clamping assembly (210) and the second movable clamping assembly (310) can be close to each other to clamp the terminal to the end of the wire. The side of the fixed mold assembly (200) or the movable mold assembly (300) is provided with an end face positioning mechanism (7) for positioning the end of the wire. 00); The end surface positioning mechanism (700) includes a bracket (710) fixed to the side of the fixed mold assembly (200); a cylinder (720) is provided on the bracket (710); a flat plate (730) is provided at the extended end of the cylinder (720); a mounting hole (721) is provided on the side of the cylinder (720); the bracket (710) is provided with a waist-shaped hole (711) opposite to the mounting hole (721); the length direction of the waist-shaped hole (711) extends along the telescopic direction of the cylinder (720).

2. The terminal crimping machine according to claim 1, characterized in that: The guide slot (410) is a long through hole, the driving member (520) is a column portion passing through the guide slot (410), the end of the column portion is provided with a roller (540) which rotates around the axial direction of the column portion, the side wall of the roller (540) faces the first side plate (420) or the second side plate (430) to limit the column portion from being separated from the long through hole, and the frame (100) is provided with a vertical guide slot (110) for the roller (540) to slide up and down.

3. The terminal crimping machine according to claim 2, characterized in that: The ends of the first side plate (420) and the second side plate (430) are both provided with U-shaped slots, and the column portion can enter the U-shaped slot along the opening of the U-shaped slot. The first side plate (420) and the second side plate (430) can both be detachably installed with an end plate (440) capable of closing the opening of the U-shaped slot, and the end plate (440) and the U-shaped slot define the guide slot hole (410).

4. The terminal crimping machine according to claim 1, characterized in that: The connecting rod and slider mechanism comprises a connecting rod (610) and a slider (620), one end of the connecting rod (610) is rotatably connected to one end of the lever arm (400) away from the driving device (500), and the other end of the connecting rod (610) is rotatably connected to the slider (620), the slider (620) is slidably arranged on the frame (100) in an up-down direction, the slider (620) is fixedly connected to the movable mold assembly (300), and the fixed mold assembly (200) is provided with a vertical guide rod penetrating the movable mold assembly (300), and the vertical guide rod is provided with a return spring for driving the movable mold assembly (300) upward away from the fixed mold assembly (200).

Images