A wire adjustment device and adjustment method for wire cutting

Abstract

The present invention relates to the field of wire cutting technology, and in particular to a wire adjustment device and adjustment method for wire cutting, comprising a workbench and a wire conveying assembly arranged on the top of the workbench, and also comprising a drive adjustment assembly and a trigger assembly arranged on one side of the workbench, wherein the winding directions of the two groups of wire storage barrels are opposite; the trigger assembly comprises a through slot opened on the side of the wire storage barrel and a trigger portion arranged inside the wire storage barrel and extending to the outside of the through slot, and when the wire on the wire storage barrel squeezes the trigger portion, the extrusion column is triggered to move longitudinally, and after the limit portion moves from the limit section into the connecting section, the deceleration section is squeezed and the rotation speed of the extrusion column is reduced. The present invention cooperates with the drive adjustment assembly and the trigger assembly, etc., so that there is a deceleration process before the winding trigger reversing, which solves the problem that the instantaneous reversing drive under the action of inertia easily causes the wire on one side of the wire storage barrel to be tight and broken, while the wire on the other side is easy to loosen and detach.

Description

Technical Field

[0001] The invention relates to the technical field of wire cutting, and in particular to a wire adjusting device and an adjusting method for wire cutting. Background Art

[0002] Wire cutting is a process in which the moving electrode wire is connected to the negative pole of a pulse power supply, and the workpiece is connected to the positive pole of the pulse power supply. The high temperature generated by ionization melts the workpiece surface, or even vaporizes it, and the metal is thrown out with the movement of the electrode wire and the impact of the working fluid, thus forming pits on the workpiece surface. Wire cutting includes slow wire cutting, medium wire cutting and fast wire cutting. Generally, in medium wire cutting and fast wire cutting, in order to ensure processing accuracy and avoid wire breakage, as well as for some chip removal needs, the wire needs to change its moving direction and move in the reverse direction after a period of forward movement.

[0003] A double wire storage drum EDM method with automatic triggering and reversing of single-layer wire storage has been retrieved in the prior art (CN109262095A). The invention adopts a double wire storage drum structure, which drives the first wire storage drum / second wire storage drum to rotate and collect wire through a power drive device, and the second wire storage drum / first wire storage drum rotates and releases wire. When the electrode wire wound by the second wire storage drum / first wire storage drum is completely released, the detection mechanism detects that the first wire storage drum / second wire storage drum has fully wound a single layer of wire, and the detection mechanism automatically triggers and causes the power drive device to drive the second wire storage drum / first wire storage drum to rotate in the opposite direction to collect wire. There is still room for improvement in the invention. For example, when performing reversing adjustment, the original first wire storage drum / second wire storage drum still maintains the original rotational inertia. The instantaneous reversing drive is easy to cause the wire on one side of the wire storage drum to be tight and broken, while the wire on the other side is easy to loosen and detach; in addition, the invention scheme can only reverse when the wire on the surface of the wire storage drum is fully wound, and the reversing point cannot be adjusted. Summary of the invention

[0004] Some simplifications or omissions may be made in this section and the abstract and title of the present application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] In order to solve the deficiencies of the prior art, one of the objects of the present invention is to provide a wire adjustment device for wire cutting.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a wire adjustment device for wire cutting, comprising a workbench and a wire conveying assembly arranged on the top of the workbench, and also comprising a driving adjustment assembly and a trigger assembly arranged on one side of the workbench, wherein the wire conveying assembly comprises two groups of wire storage barrels rotatably connected to one side of the workbench and a wire guide portion adapted to the wire storage barrels, the rotating central axes of the two groups of the wire storage barrels are the same group of connecting axes, and the winding directions of the two groups of the wire storage barrels are opposite;

[0007] The driving adjustment assembly includes a driving motor arranged on one side of the workbench, a bevel gear 1 arranged at the output end of the driving motor, and two sets of bevel gears 2 symmetrically arranged on both sides of the bevel gear 1 and rotatably connected to the workbench, the two sets of bevel gears 2 are both meshed with the bevel gear 1, and the surface of the connecting shaft located between the two sets of bevel gears 2 is fixedly connected with an extrusion column,

[0008] The end of the extrusion column rotates with the group of bevel gears 2 after abutting against the end of the bevel gear 2. The spacing between the two groups of bevel gears 2 is greater than the spacing between the two ends of the extrusion column. A limiting portion for limiting the position of the extrusion column is provided on one side of the workbench. The surface of the extrusion column is provided with a speed reduction section, a limiting section and a connecting section in sequence from the two ends to the center.

[0009] The trigger assembly includes a through groove opened on the side of the wire storage barrel and a trigger part arranged inside the wire storage barrel and extending to the outside of the through groove. When the wire on the wire storage barrel squeezes the trigger part, the extrusion column is triggered to move longitudinally. After the limiting part moves from the limiting section into the connecting section, it will squeeze the deceleration section and reduce the rotation speed of the extrusion column.

[0010] As a preferred solution of the wire adjustment device for wire cutting of the present invention, wherein: the deceleration section and the limiting section are each provided with two groups, the limiting section is an annular groove formed by an inward depression, the distance from the surface of the connecting section to the rotation center axis is smaller than the distance from the surface of the deceleration section to the rotation center axis, and the distance from the surface of the limiting section to the rotation center axis is smaller than the distance from the surface of the connecting section to the rotation center axis;

[0011] The limiting part includes a connecting frame arranged on one side of the workbench, a supporting block adapted to the annular groove is slidably connected to one side of the connecting frame, a telescopic spring is connected between the supporting block and the connecting frame, and a second ball abutting the annular groove is provided on one side of the supporting block to support and limit the position of the extrusion column. When the supporting block cooperates with the upper limiting section, the lower end of the extrusion column abuts against the second bevel gear below, and when the supporting block cooperates with the lower limiting section, the upper end of the extrusion column abuts against the second bevel gear above.

[0012] As a preferred solution of the wire adjustment device for wire cutting described in the present invention, wherein: a rack 1 is provided on the side of the support block away from the second ball, a gear matched with the rack 1 is rotatably connected to one side of the connecting frame, a connecting sleeve is slidably connected to one side of the connecting frame, a rack 2 meshing with the gear is provided on one side of the connecting sleeve, and an extrusion block is provided on the side of the connecting sleeve close to the deceleration section.

[0013] As a preferred solution of the wire adjusting device for wire cutting described in the present invention, a bearing coaxial with the connecting shaft is connected between the wire storage barrel and the workbench, and a ball 1 is arranged on the inner side of the bearing close to the connecting shaft. The ball 1 is distributed in a ring shape on the outer side of the connecting shaft and is rollingly connected to the connecting shaft.

[0014] As a preferred solution of the wire adjustment device for wire cutting described in the present invention, the trigger part includes connecting rod one and connecting rod two which are rotatably connected in the wire storage barrel, the connecting rod one and the connecting rod two are connected as one body, one side of the connecting rod one is provided with a protrusion protruding from the outside of the through groove, and one side of the connecting rod two is provided with a driving part for driving the connecting shaft to move axially.

[0015] As a preferred solution of the wire adjustment device for wire cutting described in the present invention, the protrusion includes an arc segment close to the outside of the through slot, the arc segment is tangent to the side of the connecting rod one close to the through slot, and the distance between the arc segment and the connecting rod one gradually increases from the tangent point to the end of the connecting rod one.

[0016] As a preferred solution of the wire adjustment device for wire cutting described in the present invention, wherein: the driving part includes a limit groove arranged axially in the wire storage barrel and a limit block fixedly connected to the outside of the connecting shaft and adapted to the limit groove, a hollow limit ring is arranged on one side of the limit block, a limit column adapted to the limit ring is arranged on one side of the connecting rod, a return spring is connected to the limit block and the inner wall of the wire storage barrel, and the return spring is in a compressed state, and is used to squeeze the protrusion out of the through groove.

[0017] As a preferred solution of the wire adjustment device for wire cutting described in the present invention, there is a sliding connection between the protrusion and the connecting rod, and at least two groups of slots are arranged at intervals on the side of the connecting rod along the sliding direction of the protrusion, and a locking column adapted to the slot is slidingly connected in the protrusion, and an adjustment part for driving the locking column to move out of the slot is arranged on one side of the protrusion.

[0018] As a preferred solution of the wire adjustment device for wire cutting of the present invention, wherein: the adjustment part comprises a rotating column rotatably connected to the inside of the convex block, the inner wall of the rotating column is provided with a groove adapted to the engaging column, a pressing block is provided on one side of the rotating column, a notch adapted to the pressing block is provided on one side of the convex block, and a torsion spring is connected between the pressing block and the convex block for squeezing the pressing block toward one side of the arc segment;

[0019] A longitudinal guide groove is arranged in the protrusion, a guide block adapted to the guide groove is arranged on one side of the engaging column, an arc groove is arranged on the surface of the engaging column, and a guide column adapted to the arc groove is arranged in the groove.

[0020] Beneficial effects of a wire adjustment device for wire cutting of the present invention: The present invention cooperates with the workbench, the wire transport assembly, the drive adjustment assembly, and the trigger assembly to allow a deceleration process before the winding trigger reversal, solving the problem that the wire on one side of the wire storage barrel is easily tightened and broken due to the instantaneous reversal drive under the action of inertia, while the wire on the other side is easily loosened and detached. In addition, the present invention can also adjust the reversing point of the wire storage barrel by setting an adjustment part, which is more flexible and practical when used.

[0021] Another object of the present invention is to provide a wire adjustment method for wire cutting, using the wire adjustment device for wire cutting, and operating according to the following steps:

[0022] Winding the wire from one end of one set of wire storage barrels away from the protrusion to the end close to the protrusion;

[0023] After the surface of the wire storage barrel of the group is fully wound with the wire, the wire is passed through the wire guide portion and connected to the surface of another group of wire storage barrels;

[0024] The connection position between the wire and the surface of the other wire storage barrel is the end away from the protrusion, and the winding direction is opposite to the winding direction of the wire storage barrel that is fully wound with wire.

[0025] The position of the extrusion column is limited by the limiting part to abut against one of the two bevel gears. After the drive motor is started, the two bevel gears abutting against the extrusion column rotate and drive the two coaxial wire storage barrels to rotate in the same direction.

[0026] Among them, the wire storage drum full of wire rotates to release the wire, and the other set of wire storage drums rotates to reel in the wire;

[0027] When the amount of wire winding on the surface of the wire storage drum for winding up the wire increases, the trigger part is squeezed, thereby driving the squeezing column to move in the second direction away from the bevel gear currently abutting against the wire storage drum;

[0028] When the extrusion column moves away from the currently abutting bevel gear 2:

[0029] The extrusion column loses the power output of bevel gear 2, but keeps rotating due to inertia.

[0030] The support block first leaves the current limit section and enters the connection section. At this time, the support block moves into the connection frame and drives the extrusion block to squeeze the deceleration section, so that the extrusion column slows down.

[0031] The support block enters another set of limiting sections from the connecting section, so that the extrusion column abuts against another set of bevel gears with opposite rotation directions.

[0032] The two sets of wire storage drums rotate in opposite directions, and the direction of wire reeling and unreeling is reversed.

[0033] The beneficial effects of a wire adjustment method for wire cutting of the present invention are the same as those of a wire adjustment device for wire cutting, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the wire regulating device for wire cutting of the present invention.

[0036] Figure 2 It is a schematic diagram of the three-dimensional structure of the driving and adjusting assembly of the wire adjusting device for wire cutting of the present invention.

[0037] Figure 3 For the present invention Figure 2 An enlarged schematic diagram of the structure at point A is shown.

[0038] Figure 4 It is a schematic cross-sectional structure diagram of a driving and adjusting assembly of a wire adjusting device for wire cutting according to the present invention.

[0039] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the structure at point B is shown.

[0040] Figure 6 The figure is a schematic diagram of the internal structure of the wire storage barrel after the protrusion of the wire regulating device for wire cutting of the present invention is squeezed.

[0041] Figure 7 It is a schematic diagram of the internal structure of the wire storage barrel before the protrusion of the wire regulating device for wire cutting of the present invention is squeezed.

[0042] Figure 8 It is a schematic diagram of the internal structure of the adjusting part of the wire adjusting device for wire cutting of the present invention.

[0043] Fig. 9 For the present invention Figure 8 An enlarged schematic diagram of the structure at point C is shown.

[0044] Fig.10 It is a schematic structural diagram of another angle of the interior of the adjusting part of the wire adjusting device for wire cutting of the present invention.

[0045] Fig.11 For the present invention Fig.10 An enlarged schematic diagram of the structure at D is shown.

[0046] In the figure: 100, workbench; 200, wire transport assembly; 201, wire storage drum; 201a, bearing; 201b, ball bearing 1; 202, wire guide unit; 203, connecting shaft; 300, drive adjustment assembly; 301, drive motor; 302, bevel gear 1; 303, bevel gear 2; 304, extrusion column; 304a, speed reduction section; 304b, limit section; 304c, connecting section; 305, limit section; 305a, connecting frame; 305b, support block; 305b-1, rack 1; 305b-2, gear; 305b-3, connecting sleeve; 305b-4, rack 2; 305b-5, extrusion block; 305c, telescopic spring; 305d , ball two; 400, trigger assembly; 401, through groove; 402, trigger part; 402a, connecting rod one; 402a-1, slot; 402b, connecting rod two; 402c, convex block; 402c-1, arc segment; 402c-2, engaging column; 402c-3, guide groove; 402c-4, guide block; 402c-5, arc groove; 403, driving part; 403a, limit groove; 403b, limit block; 403c, limit ring; 403d, reset spring; 404, adjusting part; 404a, rotating column; 404a-1, groove; 404b, pressing block; 404c, notch; 404d, torsion spring; 404e, guide column. DETAILED DESCRIPTION

[0047] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0050] Example 1

[0051] Reference Figure 1-Figure 3, which is the first embodiment of the present invention, provides a wire adjustment device for wire cutting, which includes: a workbench 100, a wire feeding assembly 200, a drive adjustment assembly 300 and a trigger assembly 400. The top of the workbench 100 is generally provided with a workpiece clamping component and a driving mechanism 1 for driving the workpiece clamping component to move in a horizontal direction. A lower conductive component and an upper conductive component are respectively provided on one side of the top of the workbench close to the workpiece clamping component along the longitudinal direction. A driving mechanism 2 for driving the upper conductive component to move along the longitudinal direction is provided on one side of the workbench, thereby facilitating the adjustment of the processing position of the workpiece to be processed.

[0052] Specifically, the wire transport assembly 200 includes two groups of wire storage barrels 201 rotatably connected to one side of the workbench 100 and a wire guide part 202 adapted to the wire storage barrels 201. The rotation center axis of the two groups of wire storage barrels 201 is the same group of connecting shafts 203, and the winding directions of the two groups of wire storage barrels 201 are opposite. In this embodiment, the two groups of wire storage barrels 201 are of the same size and are connected and rotated by the same group of connecting shafts 203, and the winding directions are just opposite, so that one group of wire storage barrels 201 is releasing the wire while the other group of wire storage barrels 201 is taking up the wire, so that the wire can move back and forth; the wire guide part 202 includes various groups of wire guide wheels and counterweight wheels, which can be set according to actual needs to ensure that the wire is taut and straightened within the use limit for easy use.

[0053] Furthermore, the drive adjustment component 300 includes a drive motor 301 arranged on one side of the workbench 100, a bevel gear 1 302 arranged at the output end of the drive motor 301, and two sets of bevel gears 2 303 symmetrically arranged on both sides of the bevel gear 1 302 and rotatably connected to the workbench 100. The two sets of bevel gears 2 303 are both meshed with the bevel gear 1 302. The surface of the connecting shaft 203 located between the two sets of bevel gears 2 303 is fixedly connected with an extrusion column 304, which is meshed with the two sets of bevel gears 2 303 at the same time through the bevel gear 1 302. The rotation directions of the two sets of bevel gears 2 303 are exactly opposite, providing power sources with different rotation directions.

[0054] The end of the extrusion column 304 rotates with the group of bevel gears 2 303 after abutting against the end of the bevel gear 2 303. The spacing between the two groups of bevel gears 2 303 is greater than the spacing between the two ends of the extrusion column 304. A limiting portion 305 for limiting the position of the extrusion column 304 is provided on one side of the workbench 100. The surface of the extrusion column 304 is provided with a speed reduction section 304a, a limiting section 304b and a connecting section 304c in sequence from both ends to the center. After the end of the extrusion column 304 abuts against the end of the bevel gear 2 303, it can rotate with the friction force, which is similar to the working principle of the clutch plate, which is a prior art. In actual use, the end of the pressure column 304 needs to have a certain degree of roughness on the contact surface with the end of the bevel gear 2 303, and it should not be too smooth to affect the transmission.

[0055] Among them, the trigger assembly 400 includes a through groove 401 opened on the side of the wire storage barrel 201 and a trigger part 402 arranged inside the wire storage barrel 201 and extending to the outside of the through groove 401. When the wire on the wire storage barrel 201 squeezes the trigger part 402, the extrusion column 304 is triggered to move longitudinally. After the limiting part 305 moves from the limiting section 304b into the connecting section 304c, it will squeeze the deceleration section 304a to reduce the rotation speed of the extrusion column 304.

[0056] Furthermore, the deceleration section 304a and the limiting section 304b are each provided with two groups, the limiting section 304b is an annular groove formed by an inward depression, the distance from the surface of the connecting section 304c to the rotation axis is smaller than the distance from the surface of the deceleration section 304a to the rotation axis, and the distance from the surface of the limiting section 304b to the rotation axis is smaller than the distance from the surface of the connecting section 304c to the rotation axis. That is, when the support block 305b is in contact with the deceleration section 304a, the displacement distance relative to the connecting frame 305a will be the largest, the deformation of the compression telescopic spring 305c will be greater, and the resistance that needs to be overcome will be greater. In this embodiment, the support block 305b cannot be in contact with the deceleration section 304a, thereby limiting the support block 305b from being always in the annular groove in the limiting section 304b during rotation, and the extrusion block 305b-5 will directly contact and pressurize the deceleration section 304a when moving toward the extrusion column 304; the distance from the surface of the limiting section 304b to the rotation center axis is smaller than the distance from the surface of the connecting section 304c to the rotation center axis, thereby causing the support block 305b to trigger the extrusion block 305b-5 to move toward the deceleration section 304a when moving from the limiting section 304b to the connecting section 304c.

[0057] Among them, the limiting part 305 includes a connecting frame 305a arranged on one side of the workbench 100, and a support block 305b adapted to the annular groove is slidably connected to one side of the connecting frame 305a, and a telescopic spring 305c is connected between the support block 305b and the connecting frame 305a, and a ball 2 305d abutting against the annular groove is provided on one side of the support block 305b, which can reduce the friction resistance when the support block 305b abuts against the extrusion block 305b-5, and is used to support and limit the position of the extrusion column 304. When the support block 305b cooperates with the upper limiting section 304b, the lower end of the extrusion column 304 abuts against the lower bevel gear 2 303, and when the support block 305b cooperates with the lower limiting section 304b, the upper end of the extrusion column 304 abuts against the upper bevel gear 2 303.

[0058] Preferably, a rack 1 305b-1 is provided on the side of the support block 305b away from the second ball 305d, a gear 305b-2 adapted to the rack 1 305b-1 is rotatably connected to one side of the connecting frame 305a, a connecting sleeve 305b-3 is slidably connected to one side of the connecting frame 305a, a rack 2 305b-4 meshing with the gear 305b-2 is provided on one side of the connecting sleeve 305b-3, and an extrusion block 305b-5 is provided on one side of the connecting sleeve 305b-3 close to the speed reduction section 304a. In this embodiment, the extrusion block 305b-5 is slidably connected to the connecting sleeve 305b-3 and is connected to a spring to prevent the extrusion block 305b-5 from only being rigidly abutted against the speed reduction section 304a. Furthermore, during the movement of the support block 305b, the extrusion block 305b-5 and the deceleration section 304a can maintain continuous contact and extrusion, and the friction resistance of the extrusion block 305b-5 to the deceleration section 304a is related to the displacement distance of the support block 305b, that is, the elastic force accumulated by the spring compression.

[0059] Preferably, a bearing 201a coaxial with the connecting shaft 203 is connected between the wire storage barrel 201 and the workbench 100, and a ball 201b is arranged on the inner side of the bearing 201a close to the connecting shaft 203. The ball 201b is distributed in a ring shape on the outer side of the connecting shaft 203 and is rollingly connected to the connecting shaft 203, thereby reducing the friction resistance during the longitudinal displacement of the connecting shaft 203.

[0060] Winding stage: fix the end of the wire to one side of one group of wire storage barrels 201, then rotate the group of wire storage barrels 201 to wind the wire on the wire storage barrel 201. After the surface of the group of wire storage barrels 201 is full of wire, the wire will squeeze the trigger part 402 and trigger the connecting shaft 203 to move longitudinally. The connecting shaft 203 moves longitudinally along the annularly arranged ball 1 201b, and the connecting shaft 203 moves longitudinally following the squeezing column 304. After the support block 305b is squeezed, the telescopic spring 305c is compressed and moved toward the connecting frame 305a until the ball 2 305d on one side of the support block 305b abuts against the annular groove of the limiting section 304b, so that the squeezing column 304 is fixed in position and abuts against one of the groups of bevel gears 2 303. Then, the unfixed end of the wire passes through the wire guide part 202 and is connected to the surface of the other group of wire storage barrels 201.

[0061] Triggering stage: after starting the driving motor 301, the rotation of the bevel gear 1 302 will drive the two groups of bevel gears 2 303 to rotate in opposite directions at the same time. When the squeezing column 304 abuts against one group of bevel gears 2 303, it will disengage from the other group of bevel gears 2 303. The squeezing column 304 and the abutting bevel gear 2 303 rotate along with the group of bevel gears 2 303 due to the friction between the squeezing column 304 and the abutting bevel gear 2 303. The rotation of the squeezing column 304 drives the connecting shaft 203 to rotate and then drives the two groups of wire storage barrels 201 to rotate in the same direction, so that the silk thread wound on one group of wire storage barrels 201 is unwound and gradually loses the squeezing of the trigger part 402; and the silk thread on the other group of wire storage barrels 201 is gradually wound up and squeezes the trigger part 402 of the group of wire storage barrels 201.

[0062] Deceleration and reversing stage: when the trigger part 402 on the wire storage drum 201 for taking up the wire is squeezed, the squeezing column 304 moves longitudinally, so that the support block 305b is disengaged from the annular groove of the original limiting section 304b, and the support block 305b compresses the telescopic spring 305c to enter the connecting frame 305a, so that the support block 305b drives the rack 1 305b-1 to drive the gear 305b-2 to rotate, and the gear 305b-2 rotates and drives the rack 2 305b-4 to move with the connecting sleeve 305b-3 toward the squeezing column 304, so that the squeezing block 305b-5 squeezes the deceleration section 304a of the squeezing column 304, and in the process of the support block 305b moving from the annular groove of one group of limiting sections 304b to the annular groove of the other group of limiting sections 304b, the support block 305b maintains contact with the connecting section 304c, so as to keep the squeezing block 305b-5 squeezing the deceleration section 304a. At this time, the extrusion column 304 no longer drives the wire storage barrel 201 to rotate, and the extrusion column 304 and the wire storage barrel 201 continue to rotate under the action of inertia, so that the extrusion column 304 is slowed down by the friction resistance of the extrusion block 305b-5, until the support block 305b successfully enters the annular groove of the other group of limiting segments 304b. At this time, the speed of the extrusion column 304 and the wire storage barrel 201 has been reduced, and the wire winding and releasing speed on the wire storage barrel 201 is also reduced. The speed reduction degree is set by setting the length of the connecting section 304c and the size of the friction resistance of the extrusion column 304 by the extrusion block 305b-5, so that after the support block 305b successfully enters the annular groove of the other group of limiting segments 304b, the extrusion column 304 abuts against the other group of bevel gears 2 303, and then the wire storage barrel 201 rotates in the opposite direction, and the wire on the wire storage barrel 201 is smoothly reversed at a lower original winding and releasing speed, and the influence of the original inertia on the wire is reduced.

[0063] Example 2

[0064] Reference Figure 1-Figure 6 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a preferred solution of the trigger unit 402 and the driving unit 403.

[0065] Specifically, the triggering part 402 includes a connecting rod 1 402a and a connecting rod 2 402b which are rotatably connected in the wire storage barrel 201. The connecting rod 1 402a and the connecting rod 2 402b are connected as one body. A protrusion 402c protruding from the outside of the through slot 401 is provided on one side of the connecting rod 1 402a, and a driving part 403 for driving the connecting shaft 203 to move axially is provided on one side of the connecting rod 2 402b. In this embodiment, the connecting rod 1 402a and the connecting rod 2 402b are perpendicular to each other, and the rotation axis coincides with the vertical foot point. When the connecting rod 1 402a is flush with the through slot 401, the squeezing of the limiting ring 403c by the connecting rod 2 402b is just minimal, which is convenient for initialization setting.

[0066] Furthermore, the protrusion 402c includes an arc segment 402c-1 near the outer side of the through slot 401, the arc segment 402c-1 is tangent to the side of the connecting rod 1 402a near the through slot 401, and the distance between the arc segment 402c-1 and the connecting rod 1 402a gradually increases from the tangent point to the end of the connecting rod 1 402a. As a result, when the protrusion 402c is squeezed by the wire, it is a linear process, and the guiding effect of the arc segment 402c-1 makes the wire always be wound at the initial single-layer covering speed, without leaving a blank or unwound part in the middle.

[0067] The driving part 403 includes a limit groove 403a arranged axially in the wire storage barrel 201 and a limit block 403b fixedly connected to the outside of the connecting shaft 203 and adapted to the limit groove 403a. A hollow limit ring 403c is arranged on one side of the limit block 403b, and a limit column 402b-1 adapted to the limit ring 403c is arranged on one side of the connecting rod 402b. The limit block 403b is connected to the inner wall of the wire storage barrel 201 with a return spring 403d, and the return spring 403d is in a compressed state, which is used to squeeze the protrusion 402c out of the through groove 401. In this embodiment, by setting the elastic force of the return spring 403d and the gravity values ​​of the connecting shaft 203 and the extrusion column 304 to be equal, the extrusion column 304 will completely abut against the other group of bevel gears 2 303 only after the protrusion 402c completely enters the through groove 401, so as to facilitate the determination of the reversing point.

[0068] The rest of the structure is the same as that of Example 1.

[0069] During the winding stage: fix the end of the wire to the end of one group of wire storage barrels 201 away from the protrusion 402c, then rotate the group of wire storage barrels 201 to make the wire wind toward the end close to the protrusion 402c. After the surface of the group of wire storage barrels 201 is fully wound with wire, the wire will squeeze the protrusion 402c into the through groove 401. After the protrusion 402c is subjected to force, it drives the driving part 403 to drive the connecting shaft 203 to move axially. Then, the unfixed end of the wire passes through the wire guiding part 202 and is connected to the end of the other group of wire storage barrels 201 away from the protrusion 402c.

[0070] In the triggering stage: after starting the driving motor 301, the rotation of the bevel gear 1 302 will drive the two sets of bevel gears 2 303 to rotate in opposite directions at the same time, so that the silk thread wound on the set of wire storage barrels 201 that originally squeezed the protrusion 402c will be unwound and gradually lose the squeezing of the protrusion 402c, while the silk thread on the other set of wire storage barrels 201 will gradually be wound up and squeeze the protrusion 402c of the set of wire storage barrels 201. Among them, if the protrusion 402c loses its extrusion, it will drive the connecting shaft 203 to move longitudinally under the action of the reset spring 403d; if the protrusion 402c is extruded, it will squeeze and rotate the connecting rod 1 402a and the connecting rod 2 402b, and drive the limiting ring 403c through the limiting column 402b-1 to compress the reset spring 403d of this group, and the connecting shaft 203 also moves longitudinally; and the two groups of protrusions 402c located on two different groups of wire storage barrels 201 drive the connecting shaft 203 to move in the same direction, and both drive the extrusion column 304 to disengage from the current bevel gear 2 303 and abut against the other group of bevel gear 2 303 for reversing drive.

[0071] Example 3

[0072] Reference Figure 7-Figure 11 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides an adjustment portion 404 so that the reversing point of the wire storage drum 201 can be adjusted.

[0073] Specifically, the protrusion 402c is slidably connected to the connecting rod 1 402a, and at least two groups of slots 402a-1 are arranged at intervals on the side of the connecting rod 1 402a along the sliding direction of the protrusion 402c. A locking column 402c-2 adapted to the slot 402a-1 is slidably connected inside the protrusion 402c, and an adjusting portion 404 for driving the locking column 402c-2 to move out of the slot 402a-1 is arranged on one side of the protrusion 402c. The locking column 402c-2 cooperates with different slots 402a-1, thereby adjusting the relative position of the protrusion 402c and fixing it.

[0074] Furthermore, the adjusting part 404 includes a rotating column 404a rotatably connected to the inside of the protrusion 402c, the inner wall of the rotating column 404a is provided with a groove 404a-1 adapted to the engaging column 402c-2, a pressing block 404b is provided on one side of the rotating column 404a, a notch 404c adapted to the pressing block 404b is provided on one side of the protrusion 402c, and a torsion spring 404d is connected between the pressing block 404b and the protrusion 402c, which is used to squeeze the pressing block 404b to the side of the arc segment 402c-1. The torsion spring 404d has a reset function, and the notch 404c is provided to give the pressing block 404b a suitable activity space.

[0075] The protrusion 402c is provided with a longitudinal guide groove 402c-3, a guide block 402c-4 adapted to the guide groove 402c-3 is provided on one side of the engaging column 402c-2, an arc groove 402c-5 is provided on the surface of the engaging column 402c-2, and a guide column 404e adapted to the arc groove 402c-5 is provided in the groove 404a-1. The matching arrangement of the guide block 402c-4 and the guide groove 402c-3 ensures that the engaging column 402c-2 can only move in the direction of leaving or entering the engaging groove 402a-1, which is convenient for use.

[0076] The remaining structures are the same as those in Example 2.

[0077] During the winding stage: when the reversing point position needs to be adjusted according to the actual number of winding coils, the pressing block 404b is pressed into the protrusion 402c, so that the rotating column 404a at one end of the pressing block 404b rotates, and the torsion spring 404d twists to generate a reset force. When the rotating column 404a rotates, the guide column 404e in the groove 404a-1 makes a circular motion and squeezes the arc groove 402c-5 of the engaging column 402c-2, so that the engaging column 402c-2 is limited by the guide block 402c-4 and the guide groove 402c-3. Move downward along the arc groove 402c-5, and then the engaging column 402c-2 moves out of the engaging groove 402a-1. At this time, the protrusion 402c can slide relative to the connecting rod 402a. After sliding the protrusion 402c to a suitable position, release the pressing block 404b. The pressing block 404b will move in the opposite direction under the action of the restoring force of the torsion spring 404d, and drive the rotating column 404a and the engaging column 402c-2 to move in the opposite direction. The engaging column 402c-2 moves into the new engaging groove 402a-1 position, completing the adjustment of the reversing point position.

[0078] A wire adjustment method for wire cutting uses a wire adjustment device for wire cutting and is operated according to the following steps:

[0079] The wire is wound from one end of one group of wire storage barrels 201 away from the protrusion 402c to the end close to the protrusion 402c; after the surface of the group of wire storage barrels 201 is full of wire, the wire is passed through the wire guide part 202 and connected to the surface of the other group of wire storage barrels 201; the connection position of the wire and the surface of the other group of wire storage barrels 201 is the end away from the protrusion 402c, and the winding direction is opposite to the winding direction of the group of wire storage barrels 201 full of wire; the position of the extrusion column 304 is limited by the limit part 305 to abut against one group of bevel gears 2 303, and after starting the drive motor 301, the bevel gear 2 303 abutting against the extrusion column 304 rotates and drives the coaxial two groups of wire storage barrels 201 to rotate in the same direction, wherein the wire storage barrel 201 full of wire rotates to release the wire, and the other group of wire storage barrels 201 rotates to reel in the wire; the wire storage barrel 20 used for reeling in the wire After the wire winding on the surface increases, the trigger part 402 is squeezed, thereby driving the squeezing column 304 to move away from the currently abutting bevel gear 2 303; in the process of the squeezing column 304 moving away from the currently abutting bevel gear 2 303: the squeezing column 304 loses the power output of the bevel gear 2 303, but keeps rotating under the action of inertia, the support block 305b first breaks away from the current limiting section 304b and enters the connecting section 304c, at this time the support block 305b moves into the connecting frame 305a and drives the squeezing block 305b-5 to squeeze the deceleration section 304a, so that the squeezing column 304 slows down, the support block 305b enters another set of limiting sections 304b from the connecting section 304c, so that the squeezing column 304 abuts against another set of bevel gear 2 303 with the opposite rotation direction, the two sets of wire storage barrels 201 rotate in the opposite direction, and the direction of winding and releasing the wire is reversed.

[0080] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wire adjustment device for wire cutting, comprising a workbench (100) and a wire transport assembly (200) arranged on the top of the workbench (100), characterized in that: It also includes a driving adjustment component (300) and a trigger component (400) arranged on one side of the workbench (100); the wire transport component (200) includes two groups of wire storage barrels (201) rotatably connected to one side of the workbench (100) and a wire guide portion (202) adapted to the wire storage barrels (201); the rotation center axes of the two groups of wire storage barrels (201) are the same group of connecting shafts (203); and the winding directions of the two groups of wire storage barrels (201) are opposite; The driving adjustment component (300) comprises a driving motor (301) arranged on one side of the workbench (100), a bevel gear 1 (302) arranged at the output end of the driving motor (301), and two groups of bevel gear 2 (303) symmetrically arranged on both sides of the bevel gear 1 (302) and rotatably connected to the workbench (100), the two groups of bevel gear 2 (303) are both meshed with the bevel gear 1 (302), and the surface of the connecting shaft (203) located between the two groups of bevel gear 2 (303) is fixedly connected with an extrusion column (304), The end of the extrusion column (304) rotates with the group of bevel gears (303) after abutting against the end of the group of bevel gears (303); the distance between the two groups of bevel gears (303) is greater than the distance between the two ends of the extrusion column (304); a limiting portion (305) for limiting the position of the extrusion column (304) is provided on one side of the workbench (100); and a speed reduction section (304a), a limiting section (304b) and a connecting section (304c) are provided on the surface of the extrusion column (304) in sequence from the two ends to the center; The trigger assembly (400) comprises a through slot (401) provided on the side of the wire storage barrel (201) and a trigger portion (402) provided inside the wire storage barrel (201) and extending to the outside of the through slot (401); when the wire on the wire storage barrel (201) squeezes the trigger portion (402), the squeezing column (304) is triggered to move longitudinally; after the limiting portion (305) moves from the limiting section (304b) into the connecting section (304c), the deceleration section (304a) is squeezed and the rotation speed of the squeezing column (304) is reduced.

2. The wire adjustment device for wire cutting according to claim 1, characterized in that: The deceleration section (304a) and the limiting section (304b) are both provided with two groups, the limiting section (304b) is an annular groove formed by an inward depression, the distance from the surface of the connecting section (304c) to the rotating central axis is smaller than the distance from the surface of the deceleration section (304a) to the rotating central axis, and the distance from the surface of the limiting section (304b) to the rotating central axis is smaller than the distance from the surface of the connecting section (304c) to the rotating central axis; The limiting portion (305) comprises a connecting frame (305a) arranged on one side of the workbench (100); a supporting block (305b) adapted to the annular groove is slidably connected to one side of the connecting frame (305a); a telescopic spring (305c) is connected between the supporting block (305b) and the connecting frame (305a); a second ball (305d) abutting against the annular groove is provided on one side of the supporting block (305b) for supporting and limiting the position of the extrusion column (304); when the supporting block (305b) cooperates with the upper limiting section (304b), the lower end of the extrusion column (304) abuts against the lower bevel gear (303); when the supporting block (305b) cooperates with the lower limiting section (304b), the upper end of the extrusion column (304) abuts against the upper bevel gear (303).

3. The wire adjustment device for wire cutting according to claim 2, characterized in that: A rack 1 (305b-1) is provided on the side of the support block (305b) away from the ball 2 (305d); a gear (305b-2) adapted to the rack 1 (305b-1) is rotatably connected to one side of the connecting frame (305a); a connecting sleeve (305b-3) is slidably connected to one side of the connecting frame (305a); a rack 2 (305b-4) meshing with the gear (305b-2) is provided on one side of the connecting sleeve (305b-3); and an extrusion block (305b-5) is provided on the side of the connecting sleeve (305b-3) close to the reduction section (304a).

4. The wire adjustment device for wire cutting according to any one of claims 1 to 3, characterized in that: A bearing (201a) coaxial with the connecting shaft (203) is connected between the wire storage barrel (201) and the workbench (100), and a ball bearing (201b) is arranged on the inner side of the bearing (201a) close to the connecting shaft (203). The ball bearings (201b) are distributed in a ring-shaped manner on the outer side of the connecting shaft (203) and are rollingly connected to the connecting shaft (203).

5. The wire adjustment device for wire cutting according to claim 3, characterized in that: The triggering part (402) includes a connecting rod 1 (402a) and a connecting rod 2 (402b) which are rotatably connected in the wire storage tube (201); the connecting rod 1 (402a) and the connecting rod 2 (402b) are connected as a whole; one side of the connecting rod 1 (402a) is provided with a protrusion (402c) protruding from the outside of the through groove (401); one side of the connecting rod 2 (402b) is provided with a driving part (403) for driving the connecting shaft (203) to move axially.

6. The wire adjustment device for wire cutting according to claim 5, characterized in that: The protrusion (402c) comprises an arc segment (402c-1) close to the outer side of the through slot (401), the arc segment (402c-1) is tangent to the side of the connecting rod 1 (402a) close to the through slot (401), and the distance between the arc segment (402c-1) and the connecting rod 1 (402a) gradually increases from the tangent point to the end of the connecting rod 1 (402a).

7. The wire adjustment device for wire cutting according to claim 6, characterized in that: The driving part (403) comprises a limiting groove (403a) arranged axially in the wire storage barrel (201) and a limiting block (403b) fixedly connected to the outside of the connecting shaft (203) and adapted to the limiting groove (403a); a hollow limiting ring (403c) is arranged on one side of the limiting block (403b); a limiting column (402b-1) adapted to the limiting ring (403c) is arranged on one side of the connecting rod (402b); a return spring (403d) is connected between the limiting block (403b) and the inner wall of the wire storage barrel (201); the return spring (403d) is in a compressed state and is used to squeeze the protrusion (402c) out of the outside of the through groove (401).

8. The wire adjustment device for wire cutting according to claim 7, characterized in that: The protrusion (402c) is slidably connected to the connecting rod 1 (402a); the side surface of the connecting rod 1 (402a) is provided with at least two groups of slots (402a-1) spaced apart along the sliding direction of the protrusion (402c); a snap-fitting column (402c-2) adapted to the slot (402a-1) is slidably connected inside the protrusion (402c); and an adjusting portion (404) for driving the snap-fitting column (402c-2) to move out of the slot (402a-1) is provided on one side of the protrusion (402c).

9. The wire adjustment device for wire cutting according to claim 8, characterized in that: The adjusting portion (404) comprises a rotating column (404a) rotatably connected to the inside of the protrusion (402c); the inner wall of the rotating column (404a) is provided with a groove (404a-1) adapted to the engaging column (402c-2); one side of the rotating column (404a) is provided with a pressing block (404b); one side of the protrusion (402c) is provided with a notch (404c) adapted to the pressing block (404b); a torsion spring (404d) is connected between the pressing block (404b) and the protrusion (402c) for pressing the pressing block (404b) toward one side of the arc segment (402c-1); A longitudinal guide groove (402c-3) is provided in the protrusion (402c), a guide block (402c-4) adapted to the guide groove (402c-3) is provided on one side of the locking column (402c-2), an arc groove (402c-5) is provided on the surface of the locking column (402c-2), and a guide column (404e) adapted to the arc groove (402c-5) is provided in the groove (404a-1).

10. A wire adjustment method for wire cutting, using the wire adjustment device for wire cutting according to claim 7, characterized in that: Follow these steps: Winding the silk thread from one end of one group of silk storage barrels (201) away from the protrusion (402c) to the end close to the protrusion (402c); After the surface of the group of wire storage barrels (201) is fully wound with wire, the wire is passed through the wire guide portion (202) and connected to the surface of another group of wire storage barrels (201); The connection position between the wire and the surface of another group of wire storage barrels (201) is an end away from the protrusion (402c), and the winding direction is opposite to the winding direction of the group of wire storage barrels (201) that are fully wound with wire; The position of the squeezing column (304) is limited by the limiting portion (305) to abut against one of the two bevel gears (303). After the driving motor (301) is started, the two bevel gears (303) abutting against the squeezing column (304) rotate and drive the two coaxial wire storage barrels (201) to rotate in the same direction. The wire storage drum (201) fully wound with wire rotates to release the wire, and the other group of wire storage drums (201) rotates to reel in the wire; The wire storage drum (201) for winding up the wire squeezes the trigger part (402) after the wire winding on the surface increases, thereby driving the squeezing column (304) to move in a direction away from the currently abutting bevel gear 2 (303); During the process of the squeezing column (304) moving away from the currently abutting bevel gear 2 (303): The extrusion column (304) loses the power output of the bevel gear 2 (303), but keeps rotating under the action of inertia. The support block (305b) firstly leaves the current limiting section (304b) and enters the connecting section (304c). At this time, the support block (305b) moves into the connecting frame (305a) and drives the extrusion block (305b-5) to extrude the deceleration section (304a), thereby decelerating the extrusion column (304). The support block (305b) enters another set of limiting sections (304b) from the connecting section (304c), so that the extrusion column (304) abuts against another set of bevel gears (303) with opposite rotation directions. The two groups of wire storage cylinders (201) rotate in opposite directions, and the directions of reeling and unreeling are reversed.

Images