Pressing and holding structure for soft wire cutting

Abstract

The utility model relates to a hold-down structure, and provides the hold-down structure for cutting the soft wire rod, which comprises a fixed seat, a supporting seat, a control module, a lower clamping seat, a lower clamping head, an upper pressing seat and the like, a supporting seat is arranged on the upper portion in the fixing seat, a control module is installed at the front end of the supporting seat, two lower clamping seats are fixedly arranged on the front upper portion of the supporting seat, a cutting gap allowing a cutting component to move is reserved between the two lower clamping seats, lower clamping heads are arranged on the upper portions of the lower clamping seats, and upper pressing seats are hinged to the rear upper portions of the lower clamping seats. Through cooperation of the upper clamping head, the lower clamping head, the air cylinder, the pressure sensor, the metal sheet, the anti-skid lines and other components, stable and reliable clamping of the soft wire is achieved, wire sliding caused by insufficient clamping force can be avoided, wire deformation caused by too large clamping force can be prevented, and the working efficiency is improved. Meanwhile, deviation of the wire rod in the length direction of the clamping groove in the cutting process is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press -hold structure especially relates to a press -hold structure for soft wire cutting. BACKGROUND

[0002] In the soft wire (such as silica gel wire, enameled soft wire, multi-strand copper core soft wire etc.), because of high flexibility, strong bending resistance, it is widely used in the internal wiring of consumer electronics, medical equipment, smart home and other fields, its processing process "cutting" is the key front process, need to cut the long roll wire according to the preset length accurately, and the wire end after cutting needs to keep flat, no deformation, avoid affecting the quality of subsequent stripping, terminal crimping or welding process.

[0003] At present, the press -hold structure commonly used in the soft wire cutting equipment is mostly the clamping structure, the wire is conveyed to the cutting station, the cylinder pushes the upper clamping plate downward and is pasted with the lower clamping plate, and the wire is pressed between the clamping plate, and then the cutting knife is moved downward to complete cutting, part of the equipment will adopt manual knob to adjust the clamping plate spacing, realize wire pressing. The main function of the prior art is to fix the wire position by the mechanical clamping force of the clamping plate, avoid the displacement of the wire due to the action force of the cutter during cutting, and ensure the cutting length accuracy.

[0004] However, the existing press -hold structure has obvious structural defects, which is difficult to adapt to the characteristics of the soft wire: on the one hand, the clamping plate is mostly rigid metal material and the clamping surface is designed as a plane, which is easy to cause extrusion marks on the surface of the soft wire during pressing, and even cause the deformation of the internal conductor of the wire, especially for thin diameter soft wire, easy to appear broken wire or conductor scattered strand, on the other hand, the fixed clamping plate cannot adapt to the soft wire of different diameters, and the clamping plate spacing needs to be frequently disassembled and adjusted when replacing the wire specification, which is tedious and easy to affect the processing efficiency due to improper adjustment. These defects not only lead to low yield of soft wire after cutting, but also increase the artificial adjustment time and material loss, which is difficult to meet the efficient processing demand of large-scale, multi-specification soft wire. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects in the prior art, the purpose is to provide a press -hold structure for soft wire cutting.

[0006] Technical solution: a soft wire cutting pressure holding structure, including fixed seat, support seat, control module, lower clamp seat, lower clamp head, upper pressure seat, upper clamp head, spring, air cylinder, push head and pressure sensor, the upper part of the fixed seat is provided with a support seat, the front end of the support seat is provided with a control module, the upper part of the front of the support seat is fixedly provided with two lower clamp seats, the two lower clamp seats are left with a cutting gap allowing the cutting part to move, the upper part of the lower clamp seat is provided with a lower clamp head, the upper part of the rear of the lower clamp seat is hingedly provided with an upper pressure seat, the lower part of the rear of the upper pressure seat is provided with a spring, the other end of the spring is connected with the support seat, the lower side of the front of the upper pressure seat is provided with an upper clamp head, the upper clamp head and the lower clamp head are made of flexible material, the lower end surface of the upper clamp head and the upper end surface of the lower clamp head are transversely provided with arc clamping grooves, the rear end of the support seat is vertically provided with an air cylinder, the upper end of the movable rod of the air cylinder is provided with a push head, the pressure sensor is arranged between the connection of the push head and the upper end of the movable rod, the rear end of the upper pressure seat is hingedly connected with the push head, and when the upper clamp head rotates clockwise with the upper pressure seat, it will gradually approach the corresponding side of the lower clamp head.

[0007] Further, the metal sheet is embedded between the upper pressure seat and the upper clamp head thereon and between the lower clamp seat and the lower clamp head thereon.

[0008] Further, the air cylinder, the mounting block, the positioning sensor, the bracket and the sensing sheet are further included, the support seat is slidingly arranged in the fixed seat, the fixed seat is provided with an air cylinder on one side of the top, the driving rod of the air cylinder is connected with one of the lower clamp seats, the arc clamping grooves on the upper clamp head and the lower clamp head are provided with a plurality of arc clamping grooves, and the plurality of arc clamping grooves on the upper clamp head and the lower clamp head are parallel and spaced apart in the front-rear direction, the positions of the arc clamping grooves on the upper clamp head and the lower clamp head correspond to each other, and the inner diameters of the arc clamping grooves are inconsistent, the fixed seat is provided with a mounting block on one side of the front, the mounting block is provided with a positioning sensor transversely, the bracket is fixedly arranged on one side of the front of the support seat close to the mounting block, a plurality of sensing sheets are arranged on one side of the bracket corresponding to the positioning sensor in the front-rear direction, the number of the sensing sheets is consistent with the number of the arc clamping grooves on each upper clamp head or each lower clamp head, and the interval distance between the sensing sheets corresponds to the interval distance between the arc clamping grooves.

[0009] Further, the fixed seat is provided with a mounting seat on the upper part of the front left and right sides.

[0010] Further, the inner wall of the arc clamping groove of the upper clamp head and the lower clamp head is provided with an anti-skid pattern, and the anti-skid pattern extends longitudinally along the width direction of the arc clamping groove.

[0011] Further, the control module is provided with a pressure warning indicator, and the pressure warning indicator is electrically connected with the pressure sensor.

[0012] 1. The utility model discloses a cooperation of upper clamp head, lower clamp head, air cylinder, pressure sensor, metal sheet and anti -skid line etc. parts, realized the stable reliable clamping of soft wire, can avoid the wire sliding caused by the insufficient clamping force, can prevent the wire deformation caused by the excessive clamping force, effectively reduce the deviation of wire along the length direction of the slot in the cutting process.

[0013] 2. Through the cooperation of air cylinder, positioning sensor, induction sheet, multiple groups of arc-shaped slots with different inner diameters and mounting seat, the utility model discloses a quick adaptive adjustment of different diameter soft wires is realized, need not frequently dismounts and adjusts the clamp head structure, can accurate positioning slot position, reduces the manual regulation time, improves the convenience and efficiency of multi -specification wire cutting processing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model.

[0015] Fig. 2 It is the three-dimensional structure schematic diagram of the utility model hidden fixed seat.

[0016] Fig. 3 It is the three-dimensional structure schematic diagram of the utility model lower clamp seat, air cylinder and positioning mechanism etc. parts.

[0017] Part name and serial number in the drawing: 1, fixed seat, 2, support seat, 21, control module, 3, lower clamp seat, 31, lower clamp head, 4, upper pressure seat, 41, upper clamp head, 4100, arc-shaped slot, 42, spring, 43, metal sheet, 5, air cylinder, 51, push head, 52, pressure sensor, 6, air cylinder, 61, mounting block, 62, positioning sensor, 63, support, 64, induction sheet, 7, mounting seat. DETAILED DESCRIPTION

[0018] The utility model will be specifically introduced in combination with the drawings and specific embodiment.

[0019] A kind of soft wire cutting pressure holding structure, such as Figs. 1-3As shown, including fixed seat 1, support seat 2, control module 21, lower clamp seat 3, lower clamp head 31, upper pressure seat 4, upper clamp head 41, spring 42, air cylinder 5, push head 51 and pressure sensor 52, the upper part of fixed seat 1 is slidably connected with support seat 2 through slide rail, support seat 2 can move forward and backward along fixed seat 1, control module 21 is fixedly installed on the front end of support seat 2 through bolt, control module 21 is connected with the control system of cutting equipment, the operator can control control module 21 through the control system of cutting equipment, PLC controller and signal processing unit are integrated in control module 21, which is used for receiving sensor signal and outputting control instruction, wherein, pressure warning indicator light is arranged on control module 21, pressure warning indicator light is electrically connected with signal processing unit in control module 21 through wire, and pressure warning indicator light and pressure sensor 52 form signal linkage through control module 21; when the clamping pressure detected by pressure sensor 52 exceeds the safety threshold value preset by control module 21, pressure sensor 52 transmits the overpressure signal to control module 21, control module 21 controls pressure warning indicator light to light up on one hand, sends visual warning to the operator, on the other hand, controls air cylinder 5 to stop outputting pressure, if the pressure continues to overpressure, air cylinder 5 is controlled to retract appropriately, the clamping force is reduced, and the deformation of soft wire or damage of insulation layer caused by excessive clamping is avoided;

[0020] The front upper part of the support base 2 is provided with two lower clamping seats 3 through welding, the two lower clamping seats 3 are symmetrically distributed, and a cutting gap allowing the cutting component (such as a cutting knife) to move is left between the two lower clamping seats 3, so that the cutting component can smoothly extend to complete the wire cutting. The upper part of the lower clamping seat 3 is provided with a lower clamping head 31 through adhesive fixing. The upper rear part of the lower clamping seat 3 is hingedly connected with an upper pressing seat 4, the upper pressing seat 4 can rotate around the hinge point, the lower rear part of the upper pressing seat 4 is connected with a spring 42 through a hook, the other end of the spring 42 is fixedly connected with the support base 2 through a hook, the spring 42 is always in a slightly stretched state, can pull the rear end of the upper pressing seat 4 downward to reset when there is no external driving force, and then drive the upper clamping head 41 to move away from the lower clamping head 31, so as to facilitate the placement of the wire. The front lower side of the upper pressing seat 4 is provided with an upper clamping head 41 through adhesive fixing. The upper clamping head 41 and the lower clamping head 31 are both made of silica gel material, which can avoid damage to the soft wire caused by rigid contact. The lower end surface of the upper clamping head 41 and the upper end surface of the lower clamping head 31 are both transversely provided with an arc-shaped clamping groove 4100, the curvature of the arc-shaped clamping groove 4100 is matched with the cross section of the soft wire, which can increase the clamping contact area and improve the clamping stability. The rear end of the support base 2 is vertically fixed with a gas cylinder 5 through a support, the gas cylinder 5 is connected with an external gas source through a gas pipe, and the control end of the gas cylinder 5 is electrically connected with a control module 21 through wires, and is controlled to realize extension and contraction under the control of the control module 21. The upper end of the movable rod of the gas cylinder 5 is fixed with a push head 51 through a bolt, and a pressure sensor 52 is fixed between the connection position of the push head 51 and the upper end of the movable rod through a screw. The signal output end of the pressure sensor 52 is electrically connected with the control module 21 through wires, so as to collect the pressure data at the push head 51 in real time and transmit the pressure data to the control module 21. The rear end of the upper pressing seat 4 is hingedly connected with the push head 51 through a pin shaft, and when the upper clamping head 41 rotates clockwise with the upper pressing seat 4, it will gradually approach the side of the corresponding lower clamping head 31, so as to realize wire clamping. When the movable rod of the gas cylinder 5 extends upward, the push head 51 is pushed upward, the push head 51 drives the rear end of the upper pressing seat 4 to lift up, the upper pressing seat 4 rotates clockwise around the hinge point, and then drives the upper clamping head 41 to approach the lower clamping head 31, at the same time, the pressure sensor 52 monitors the clamping pressure in real time and feeds back to the control module 21. If the pressure reaches the preset value, the control module 21 controls the gas cylinder 5 to stop the extension stroke, and if the pressure exceeds the preset safety threshold, the control module 21 controls the gas cylinder 5 to appropriately retract, so as to avoid excessive clamping.

[0021] The left and right sides of the front upper part of the fixed seat 1 are both fixed with mounting seats 7 through bolts, and the mounting seats 7 are provided with waist-shaped mounting holes, which are used for detachably mounting wire components (such as wire wheels and wire pipes) through bolts. During installation, the fixed positions of the wire components in the waist-shaped mounting holes can be adjusted according to the wire conveying path, so that the wire components and the arc-shaped clamping groove 4100 of the lower chuck 31 are on the same axis, the wire can be smoothly conveyed along the preset track to the clamping area, and the wire cannot accurately enter the arc-shaped clamping groove 4100 due to deviation during wire conveying is avoided. At the same time, the wire component can limit the wire conveying to reduce the shaking of the wire during the conveying process, and further ensure the accuracy of subsequent clamping and cutting.

[0022] As shown in Figs. 1-3 It also includes a metal sheet 43, which is embedded between the upper chuck 41 on the upper pressing seat 4 and the lower chuck 31 on the lower clamping seat 3. The metal sheet 43 is made of thin copper sheet and is fixed by adhesion with the clamping seat and the chuck. On the premise of not affecting the flexibility of the chuck, the structural rigidity of the upper chuck 41 and the lower chuck 31 is maintained, so that the chuck does not produce excessive deformation due to excessive flexibility during clamping, and the wire positioning deviation is avoided.

[0023] As shown in Figs. 1-3As shown, it also includes an electric cylinder 6, a mounting block 61, a positioning sensor 62, a bracket 63 and an induction sheet 64, the electric cylinder 6 is fixedly arranged on one side of the top of the fixed seat 1 through bolts, the driving rod of the electric cylinder 6 is fixedly connected with one of the lower clamping seats 3 through a shaft coupling, the control end of the electric cylinder 6 is electrically connected with the control module 21 through wires, and the electric cylinder 6 is controlled to realize extension and contraction under the control of the control module 21, when the electric cylinder 6 is started, it can drive the lower clamping seat 3, the supporting seat 2, the air cylinder 5 on the supporting seat 2, the upper pressing seat 4 and all other components to move synchronously forward and backward, and then adjust the position of the chuck to adapt to different cutting requirements, the arc-shaped clamping grooves 4100 on the upper chuck 41 and the lower chuck 31 are all provided with a plurality of arc-shaped clamping grooves 4100, and the plurality of arc-shaped clamping grooves 4100 on the upper chuck 41 and the lower chuck 31 are all provided in parallel and spaced apart along the front and back directions, the positions of the arc-shaped clamping grooves 4100 on the upper chuck 41 and the lower chuck 31 correspond to each other, and the inner diameters of the arc-shaped clamping grooves 4100 are inconsistent, the arc-shaped clamping grooves 4100 with different inner diameters can respectively adapt to soft wires with different diameters, the clamping requirement of wires with multiple specifications can be met without replacing the chuck, the mounting block 61 is fixedly arranged on one side of the front of the fixed seat 1 through bolts, the positioning sensor 62 is fixedly arranged on the mounting block 61 in a transverse direction through screws, the positioning sensor 62 is an optical sensor, the signal output end of the positioning sensor 62 is electrically connected with the control module 21 through wires, and the detection signal can be transmitted to the control module 21, the bracket 63 is fixedly arranged on one side of the front of the supporting seat 2 close to the mounting block 61 through welding, a plurality of induction sheets 64 are arranged on one side of the bracket 63 opposite to the positioning sensor 62 in a front and back direction and are spaced apart, the induction sheets 64 are metal sheets and can be recognized by the positioning sensor 62, the number of the induction sheets 64 is consistent with the number of the arc-shaped clamping grooves 4100 on each upper chuck 41 or each lower chuck 31, and the interval distance between the induction sheets 64 corresponds to the interval distance between the arc-shaped clamping grooves 4100; when the control module 21 controls the electric cylinder 6 to drive the supporting seat 2 to move, the bracket 63 moves synchronously with the supporting seat 2, the positioning sensor 62 determines the specification of the arc-shaped clamping groove 4100 currently aligned by recognizing the induction sheets 64 at different positions, if it is needed to switch to the clamping groove of the wire with the corresponding diameter, the control module 21 controls the electric cylinder 6 to extend and contract according to the signal of the positioning sensor 62, drives the supporting seat 2 to move to the target induction sheet 64 aligned with the positioning sensor 62, and completes the specification switching of the clamping groove.

[0024] As shown in the drawings, Fig. 3 The inner walls of the arc-shaped clamping grooves 4100 of the upper chuck 41 and the lower chuck 31 are all provided with anti-skid lines, the anti-skid lines extend longitudinally along the width direction of the arc-shaped clamping groove 4100, can increase the friction between the arc-shaped clamping groove 4100 and the surface of the soft wire, avoid the wire from sliding along the length direction of the clamping groove during the clamping or cutting process, further improve the clamping stability, and ensure the accuracy of the cutting length.

[0025] In the incoming stage, the soft wire is first guided by the wire guide components on the left and right side mounting seats of the front upper part of the fixed seat 1 and accurately conveyed along the preset path to the upper side of the lower clamp head 31. At this time, the air cylinder 5 is in a retracted state, the upper pressing seat 4 is kept in a state of sinking at the rear end and lifting at the front end under the pulling force of the spring 42, and the upper clamp head 41 and the lower clamp head 31 are in a separated state, and the arc-shaped clamping groove 4100 is completely open, so as to facilitate the smooth entry of the wire. According to the diameter of the wire, the operator controls the control module 21 to start the electric cylinder 6 after receiving the specification instruction, and drives the lower clamp seat 3, the support seat 2, the air cylinder 5 on the support seat 2, the upper pressing seat 4 and the like to move forward and backward synchronously through the extension and retraction of the driving rod of the electric cylinder 6. In the moving process, the positioning sensor 62 continuously identifies the sensing sheet 64 on the support 63, and when the sensing sheet 64 matched with the target diameter is aligned with the positioning sensor 62, the positioning sensor 62 feeds back the signal to the control module 21, and the control module 21 controls the electric cylinder 6 to stop moving. At this time, the upper clamp head 41 is accurately aligned with the arc-shaped clamping groove 4100 of the corresponding specification on the lower clamp head 31. After the wire enters the arc-shaped clamping groove 4100 of the lower clamp head 31 and is in place, the control module 21 sends a clamping instruction to the air cylinder 5, the movable rod of the air cylinder 5 extends upward, pushes the push head 51 to move upward, and the push head 51 drives the rear end of the upper pressing seat 4 to rotate upward around the hinge point, and the front end of the upper pressing seat 4 rotates downward accordingly, so that the upper clamp head 41 gradually approaches the lower clamp head 31. In the clamping process, the pressure sensor 52 detects the pressure at the push head 51 in real time and transmits the data to the control module 21, and when the pressure reaches the preset clamping value, the control module 21 controls the air cylinder 5 to stop the extension stroke, and the upper clamp head 41 and the lower clamp head 31 cooperate to stably clamp the wire in the arc-shaped clamping groove 4100. The anti-skid lines on the inner wall of the arc-shaped clamping groove 4100 increase the friction to prevent the wire from slipping. If the pressure exceeds the safety threshold, the control module 21 immediately controls the air cylinder 5 to stop moving, and at the same time, the pressure warning indicator light on the control module 21 is turned on to avoid wire deformation. The cutting component moves downward through the cutting gap between the two lower clamp seats 3 to complete the wire cutting. After cutting is completed, the control module 21 controls the movable rod of the air cylinder 5 to retract, and the push head 51 moves downward accordingly. The upper pressing seat 4 reversely rotates and resets under the pulling force of the spring 42, the upper clamp head 41 is lifted upward and separated from the lower clamp head 31, the cut wire is released, the wire leaves the clamping area under the driving of the subsequent conveying mechanism, and the whole process of incoming to cutting is completed.

[0026] Although the present disclosure has been described only with respect to a limited number of embodiments, those skilled in the art who benefit from the present disclosure will understand that various other embodiments can be designed without departing from the scope of the present utility model. Therefore, the scope of the present utility model should be limited only by the appended claims.

Claims

1. A soft wire cutting pressure holding structure, comprising a fixed seat (1) and a support seat (2), the upper part of the fixed seat (1) is provided with the support seat (2), characterized in that It also includes a control module (21), a lower clamp seat (3), a lower clamp head (31), an upper pressure seat (4), an upper clamp head (41), a spring (42), a gas cylinder (5), a push head (51) and a pressure sensor (52), the front end of the support seat (2) is provided with the control module (21), the upper part of the front of the support seat (2) is fixedly provided with two lower clamp seats (3), the two lower clamp seats (3) are left with a cutting gap allowing the cutting part to move, the upper part of the lower clamp seat (3) is provided with a lower clamp head (31), the upper part of the rear of the lower clamp seat (3) is hingedly provided with an upper pressure seat (4), the lower part of the rear of the upper pressure seat (4) is provided with a spring (42), the other end of the spring (42) is connected with the support seat (2), the lower side of the front of the upper pressure seat (4) is provided with an upper clamp head (41), the upper clamp head (41) and the lower clamp head (31) are made of flexible material, the lower end surface of the upper clamp head (41) and the upper end surface of the lower clamp head (31) are both transversely provided with an arc-shaped clamping groove (4100), the rear end of the support seat (2) is vertically provided with a gas cylinder (5), the upper end of the movable rod of the gas cylinder (5) is provided with a push head (51), the connection between the push head (51) and the upper end of the movable rod is provided with a pressure sensor (52), the rear end of the upper pressure seat (4) is hingedly connected with the push head (51), and when the upper clamp head (41) rotates clockwise with the upper pressure seat (4), it will gradually approach the corresponding side of the lower clamp head (31).

2. The holding structure for cutting soft wire according to claim 1, wherein It also includes a metal sheet (43), the upper pressure seat (4) and the upper clamp head (41) thereon, and the lower clamp seat (3) and the lower clamp head (31) thereon are both embedded with a metal sheet (43).

3. The holding structure for cutting soft wire according to claim 2, wherein It also includes an electric cylinder (6), a mounting block (61), a positioning sensor (62), a bracket (63) and a sensing sheet (64), the support seat (2) is slidingly arranged in the fixed seat (1), one side of the top of the fixed seat (1) is provided with an electric cylinder (6), the driving rod of the electric cylinder (6) is connected with one of the lower clamp seats (3), the arc-shaped clamping grooves (4100) on the upper clamp head (41) and the lower clamp head (31) are all provided with multiple, and the multiple arc-shaped clamping grooves (4100) on the upper clamp head (41) and the lower clamp head (31) are all parallel and spaced apart in the front-rear direction, the positions of the arc-shaped clamping grooves (4100) on the upper clamp head (41) and the lower clamp head (31) correspond to each other, and the inner diameters of the arc-shaped clamping grooves (4100) are inconsistent, one side of the front of the fixed seat (1) is provided with a mounting block (61), the mounting block (61) is transversely provided with a positioning sensor (62), one side of the front of the support seat (2) close to the mounting block (61) is fixedly provided with a bracket (63), multiple sensing sheets (64) are spaced apart in the front-rear direction on the side of the bracket (63) opposite to the positioning sensor (62), the number of the sensing sheets (64) is consistent with the number of the arc-shaped clamping grooves (4100) on each upper clamp head (41) or each lower clamp head (31), and the interval distance between the sensing sheets (64) corresponds to the interval distance between the arc-shaped clamping grooves (4100).

4. The holding structure for cutting soft wire according to claim 3, wherein The fixing base (1) is provided with the mounting seat (7) on the left and right sides of the upper front part.

5. The holding structure for cutting soft wire according to claim 4, wherein The inner wall of the arc-shaped clamping groove (4100) of the upper clamp head (41) and the lower clamp head (31) is provided with anti-skid lines, which extend longitudinally along the width direction of the arc-shaped clamping groove (4100).

6. The holding structure for cutting soft wire according to claim 5, wherein The control module (21) is provided with a pressure warning indicator light, and the pressure warning indicator light is electrically connected with the pressure sensor (52).

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