Wire cutting machine for bicycle metal accessories

Abstract

The invention discloses a wire cutting machine for bicycle metal accessories, and relates to the field of metal processing.The wire cutting machine comprises a rack, a control box, a liquid receiving tank, a movement module, an assembly frame, a clamp and a support, the support comprises a stand column, a fixed rod, a sliding block and a movable rod, a driving mechanism is arranged in the stand column, and an elastic assembly is elastically installed in the movable rod; one end of the elastic assembly is connected with one end of the electrode wire, the other end of the elastic assembly is in elastic contact with the movable end of the driving mechanism, a braking mechanism is arranged at the position of a driving shaft of the driving mechanism, and the braking mechanism is electrically connected with the driving mechanism through an interlocking circuit. According to the wire cutting device, the driving mechanism is matched with the elastic assembly and the brake mechanism to enable the driving mechanism to automatically adjust the tension degree of the electrode wire, traditional experience judgment is replaced, the adjustment precision of the tension degree of the electrode wire is greatly improved, the situation that the electrode wire is too tight or loosened is prevented, and therefore the wire cutting precision is improved.

Description

Technical Field

[0001] The invention relates to the field of metal processing, in particular to a wire cutting machine for bicycle metal accessories. Background Art

[0002] Wire cutting machine, also known as CNC electric spark wire cutting machine, uses a moving metal wire as the working electrode, and passes a pulse current between the metal wire and the workpiece to generate pulse discharge for cutting. During the processing, the electrode wire passes through a small hole drilled in advance on the workpiece, and is driven by the wire feeding mechanism through a guide wheel to perform axial wire feeding movement. The workpiece is installed on the workbench through an insulating plate, and is controlled by a CNC device to move along the X and Y coordinate directions according to the processing program instructions to synthesize the required straight line, circular arc and other plane trajectories. While moving, discharge corrosion occurs continuously between the wire electrode and the workpiece. The working fluid is injected through the nozzle to take away the electro-erosion products, and finally a fine slit trajectory line formed by the wire cutting is left on the metal workpiece, thereby achieving the processing requirement of separating one part of the metal from another part of the metal.

[0003] The existing patent CN110860746B discloses a wire cutting machine with a working fluid processing structure, including a machine tool body, a workbench, a wire feeding mechanism, a fluid supply device, an electrode wire and a nozzle.

[0004] However, this patent still has the following problems in actual use:

[0005] 1. The bracket for installing the electrode wire of the equipment lacks a tensioning mechanism, resulting in the tightness of the assembled electrode wire relying on the staff's experience, which can easily cause the electrode wire to be too tight or loose, thereby reducing the accuracy of wire cutting.

[0006] 2. The nozzle of the cooling pipe of the equipment is fixed, resulting in limited cooling area space. When wire cutting of larger parts is performed, the cooling treatment of the processing is affected, thus affecting the effect of wire cutting. Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wire cutting machine for bicycle metal accessories to solve the problems existing in the above-mentioned background technology.

[0008] The present invention provides the following technical solution: a wire cutting machine for bicycle metal parts, comprising a frame, on which a control box, a motion module, a liquid receiving tank, a bracket, an assembly frame and a clamp are arranged, the bracket comprises a column, a fixed rod, a slider and a movable rod, the column is detachably mounted on the free end of the motion module, the fixed rod bolt is mounted on the bottom of the column, a driving mechanism is arranged inside the column, the movable end of the driving mechanism is transmission-connected with the slider, the movable rod is arranged on the column through the slider and is in a vertical corresponding relationship with the fixed rod, and the distance between the fixed rod and the movable rod is adjusted by the driving mechanism and the slider;

[0009] A tension component is elastically installed inside the movable rod, one end of the tension component is connected to one end of the electrode wire, and the other end is elastically in contact with the movable end of the driving mechanism;

[0010] A brake mechanism is provided at the driving shaft of the driving mechanism, and the brake mechanism is electrically connected to the driving mechanism through an interlocking circuit;

[0011] In the initial state, the tensioning assembly and the movable end of the driving mechanism are in a non-contact state. As the movable rod is lifted, the electrode wire is tightened, so that the other end of the tensioning assembly is clamped in contact with the movable end of the driving mechanism, thereby triggering the braking mechanism to stop the movement of the driving mechanism, thereby realizing automatic adjustment of the tension of the electrode wire.

[0012] Preferably, a folding baffle is detachably installed between the movable rod and the fixed rod. The folding baffle is movably placed in front of the column and in sliding contact with the column to seal the groove in front of the column. When the piston rod is raised or lowered, one end of the folding baffle follows the movement height of the movable rod to extend and retract to prevent cooling from splashing into the interior of the column and causing damage to the driving mechanism.

[0013] Preferably, a retractable water pipe is provided on the movable rod, and one end of the water pipe is connected to the assembly clamp, so that the coolant enters the assembly clamp and flows along the direction of the electrode wire, and the other end of the water pipe is connected to the liquid receiving tank through the pump body to realize water circulation.

[0014] Preferably, the driving mechanism includes a motor rotatably mounted at the bottom of the column, a coupling fixedly mounted on the motor output shaft, and a screw rotatably mounted on the top of the column, wherein the screw is threadably sleeved with the slider, and the slider is driven by the motor and the coupling to move freely up and down on the column.

[0015] Preferably, the tensioning assembly includes two groups of symmetrically arranged clamping rods, and the clamping rods are arranged on each part of the slider through a positioning axis and are located on both sides of the screw rod, and a clamping block is arranged on one side of each clamping rod. The tensioning assembly also includes a first connecting rod hinged at one end of the two clamping rods, and the tensioning assembly also includes a first spring and a first connecting block connected to one end of the first connecting rod, the first spring is hinged to the first connecting rod through the first connecting block, and one end of the first spring is connected to the electrode wire.

[0016] Preferably, the braking mechanism includes a torque overload protector arranged between the screw rod and the coupling, and an interlocking circuit connected between the torque overload protector and the motor.

[0017] Preferably, an auxiliary rod is provided at the other end of the slider, and a second spring, a second connecting block and a second connecting rod are provided inside the auxiliary rod, wherein the second connecting rod is hinged at the other end of the clamping rod, and the second spring is connected to the second connecting rod through the second connecting block.

[0018] Preferably, one end of the first spring is connected to a pull rod, a guide sleeve is provided inside the movable rod between the first spring and the conductive wheel, and the pull rod is slidably placed in the guide sleeve, one end of the electrode wire is connected to the pull rod and connected to the first spring through the pull rod.

[0019] Preferably, the folding baffle includes a fixed plate, a sliding plate and a connecting plate. There are multiple sliding plates and they are telescopically and slidably connected to each other. The connecting plate is slidably installed on the top sliding plate for connecting to the movable rod, and the fixed plate is slidably connected to the bottom sliding plate for connecting to the fixed rod.

[0020] Preferably, the clamping block is a right-angle trapezoidal structure, and the inclined surface in contact with the screw rod is treated with anti-slip texture.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention installs the electrode wire on the set fixed rod and the movable rod, and uses the driving mechanism to drive the movable rod to move upward on the column away from the fixed rod, so as to tighten the electrode wire. When it moves to a suitable height, the electrode wire pulls the set tensioning component and cooperates with the braking mechanism to automatically stop the driving mechanism, thereby realizing a self-locking function, thereby preventing the movable rod from continuing to rise, so that the electrode wire is at a required tightness, and realizing automatic adjustment of the tension of the electrode wire, replacing the traditional empirical judgment, greatly improving the accuracy of adjusting the tension of the electrode wire, preventing the electrode wire from being too tight or loose, and thus improving the accuracy of wire cutting.

[0023] 2. The present invention provides a folding baffle between the fixed rod and the movable rod, and the folding baffle is composed of a plurality of plates that are slidably connected to each other. When adjusting the tightness of the electrode wire, one end of the folding baffle adaptively retracts and contracts following the lifting and lowering of the movable rod, thereby shielding the opening at the front end of the column, preventing the coolant from splashing into the interior of the column to damage the driving mechanism, thereby improving the protection of the driving mechanism.

[0024] 3. The present invention sets a water pipe on the movable rod, and connects it with the assembly clamp, so that the coolant flows down through the assembly clamp, thereby making the coolant flow down vertically along the path direction of the electrode wire, and the water pipe moves synchronously with the bracket, so that the coolant always keeps in contact with the electrode wire, without considering the size of the wire cutting product, greatly improving the cooling effect on the product and the electrode wire, thereby ensuring the wire cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure of the bracket under one viewing angle of the present invention.

[0027] Figure 3 It is a structural schematic diagram of the present invention from another viewing angle.

[0028] Figure 4 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0029] Figure 5 It is a schematic diagram of the folding baffle structure of the present invention.

[0030] The reference numerals are: 1, frame; 2, control box; 3, motion module; 4, bracket; 41, column; 411, motor; 412, coupling; 413, torque overload protector; 414, lead screw; 415, interlocking circuit; 42, fixed rod; 43, slider; 44, movable rod; 441, conductive wheel; 442, assembly clip; 443, tension assembly; 4431, pull rod; 4432, guide sleeve shaft; 443 3. First spring; 4434. First connecting block; 4435. Clamping rod; 4436. Positioning shaft; 4437. Clamping block; 4438. First connecting rod; 45. Auxiliary rod; 4451. Second spring; 4452. Second connecting block; 4453. Second connecting rod; 5. Liquid collecting tank; 6. Assembly frame; 7. Clamp; 8. Water pipe; 9. Folding baffle; 91. Fixed plate; 92. Slide plate; 93. Connecting plate. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0032] The present invention provides a wire cutting machine for bicycle metal parts, such as Figure 1-4 As shown, it includes a frame 1, a control box 2 is provided at the rear end of the frame 1, a liquid receiving tank 5 is provided at the top of the front end of the frame 1, an assembly frame 6 and a clamp 7 are provided at the front end of the liquid receiving tank 5, a motion module 3 is provided at the rear end of the liquid receiving tank 5, a bracket 4 is provided at the free end of the motion module 3, the bracket 4 includes a column 41, a fixed rod 42, a slider 43 and a movable rod 44, the column 41 is detachably mounted on the free end of the motion module 3, the fixed rod 42 is bolted to the bottom of the column 41, a driving mechanism is provided inside the column 41, the movable end of the driving mechanism is transmission-connected with the slider 43, the movable rod 44 is arranged on the column 41 through the slider 43 and is in a vertical corresponding relationship with the fixed rod 42, and the distance between the fixed rod 42 and the movable rod 44 is adjusted by the driving mechanism and the slider 43;

[0033] The movable rod 44 and the fixed rod 42 are both provided with an assembly clamp 442 for installing the electrode wire, a conductive wheel 441 is provided at one end of the movable rod 44, and a tension component 443 is elastically installed inside the movable rod 44, one end of the tension component 443 is connected to one end of the electrode wire, and the other end is elastically in contact with the movable end of the driving mechanism;

[0034] A brake mechanism is provided at the driving shaft of the driving mechanism, and the brake mechanism is electrically connected to the driving mechanism through an interlocking circuit 415;

[0035] In the initial state, the tensioning component 443 is in a non-contact state with the movable end of the driving mechanism. As the movable rod 44 is lifted, the electrode wire is tightened, so that the other end of the tensioning component is clamped in contact with the movable end of the driving mechanism, thereby triggering the braking mechanism to stop the movement of the driving mechanism, thereby realizing automatic adjustment of the tension of the electrode wire.

[0036] When in use, the two ends of the electrode wire are respectively installed on the assembly clamps 442 of the fixed rod 42 and the movable rod 44, and one end of the electrode wire is connected to the tensioning component 443 through the conductive wheel 441. When adjusting, the driving mechanism is started to drive the slider 43 to move upward on the column 41, so that the movable rod 44 is away from the fixed rod 42. When it moves to a suitable height, the electrode wire pulls the tensioning component, so that one end of the tensioning component is clamped to the movable end of the driving mechanism. Under the detection of the braking mechanism, the driving mechanism stops working immediately, thereby preventing the movable rod from continuing to rise, and realizing automatic adjustment of the tension of the electrode wire, replacing the traditional experience judgment, greatly improving the accuracy of adjusting the tension of the electrode wire, and preventing the electrode wire from being too tight or loose, thereby improving the accuracy of wire cutting.

[0037] A folding baffle 9 is detachably installed between the movable rod 44 and the fixed rod 42. The folding baffle 9 is movably placed in front of the column 41 and in sliding contact with the column 41 to seal the groove in front of the column 41. When the piston rod is raised or lowered, one end of the folding baffle 9 follows the movement height of the movable rod 44 to prevent cooling from splashing into the interior of the column 41 and causing damage to the driving mechanism.

[0038] The folding baffle 9 is composed of a plurality of plates slidably connected to each other, and its two ends are respectively connected to the fixed rod 42 and the movable rod 44. The folding baffle 9 adaptively retracts and contracts following the rise and fall of the movable rod 44, thereby shielding the opening at the front end of the column 41, preventing the coolant from splashing into the interior of the column 41 and causing damage to the drive mechanism, thereby improving the protection of the drive mechanism.

[0039] A retractable water pipe 8 is provided on the movable rod 44, and one end of the water pipe 8 is connected to the assembly clamp 442, so that the coolant enters the assembly clamp 442 and flows along the direction of the electrode wire. The other end of the water pipe 8 is connected to the liquid receiving tank 5 through the pump body to realize water circulation.

[0040] The water pipe 8 is set on the movable rod 44 and connected with the assembly clamp 442, so that the coolant flows down through the assembly clamp 442, thereby making the coolant flow down vertically along the path direction of the electrode wire, and the water pipe 8 moves synchronously with the bracket 4, so that the coolant always keeps in contact with the electrode wire, without considering the size of the wire-cut product, greatly improving the cooling effect on the product and the electrode wire, thereby ensuring the wire-cut effect.

[0041] In this embodiment, if Figure 2 As shown, the driving mechanism includes a motor 411 rotatably mounted at the bottom of the column 41, a coupling 412 fixedly mounted on the output shaft of the motor 411, and a screw 414 rotatably mounted on the top of the column 41, wherein the screw 414 is threadedly sleeved with the slider 43, and the slider 43 is driven by the motor 411 and the coupling 412 to move freely up and down on the column 41.

[0042] In this embodiment, if Figure 2-4 As shown, the tensioning assembly 443 includes two groups of symmetrically arranged clamping rods 4435, and the clamping rods 4435 are arranged on each part of the slider 43 through a positioning shaft 4436 and are located on both sides of the screw rod 414. A clamping block 4437 is arranged on one side of each clamping rod 4435. The tensioning assembly 443 also includes a first connecting rod 4438 hinged at one end of the two clamping rods 4435. The tensioning assembly 443 also includes a first spring 4433 and a first connecting block 4434 connected to one end of the first connecting rod 4438. The first spring 4433 is hinged to the first connecting rod 4438 through the first connecting block 4434, and one end of the first spring 4433 is connected to the electrode wire.

[0043] In this embodiment, if Figure 2 As shown, the brake mechanism includes a torque overload protector 413 disposed between the screw rod 414 and the coupling 412 , and an interlocking circuit 415 connected between the torque overload protector 413 and the motor 411 .

[0044] In this embodiment, if Figure 1 , 3 As shown in FIG. 4 , an auxiliary rod 45 is provided at the other end of the slider 43, and a second spring 4451, a second connecting block 4452 and a second connecting rod 4453 are provided inside the auxiliary rod 45, wherein the second connecting rod 4453 is hinged at the other end of the clamping rod 4435, and the second spring 4451 is connected to the second connecting rod 4453 through the second connecting block 4452.

[0045] In this embodiment, if Figure 3 As shown, one end of the first spring 4433 is connected to a pull rod 4431, a guide sleeve shaft 4432 is arranged inside the movable rod 44 between the first spring 4433 and the conductive wheel 441, and the pull rod 4431 is slidably placed in the guide sleeve shaft 4432, one end of the electrode wire is connected to the pull rod 4431 and is connected to the first spring 4433 through the pull rod 4431, so that when the electrode wire pulls the first spring, the first spring moves horizontally.

[0046] In this embodiment, if Figure 1 and 5 As shown, the folding baffle 9 includes a fixed plate 91, a slide plate 92 and a connecting plate 93. There are multiple slide plates 92 and they are telescopically and slidably connected to each other. The connecting plate 93 is slidably installed on the top slide plate 92 for connecting to the movable rod 44. The fixed plate 91 is slidably connected to the bottom slide plate 92 for connecting to the fixed rod 42.

[0047] In this embodiment, if Figure 4 As shown, the clamping block 4437 is a right-angled trapezoidal structure, and the inclined surface thereof in contact with the screw rod 414 is treated with anti-slip texture.

[0048] The working principle of the present invention is as follows: when in use, the two ends of the electrode wire are respectively installed on the assembly clamps 442 of the fixed rod 42 and the movable rod 44, and one end of the electrode wire is connected to the pull rod 4431 through the conductive wheel 441. When adjusting, the motor 411 is started to drive the screw rod 414 to rotate, and under the action of the four threaded sleeves with the slider 43, the slider 43 moves upward on the column 41, so that the movable rod 44 is away from the fixed rod 42. When it moves to a suitable height, the electrode wire pulls the pull rod 4431, so that the pull rod 4431 pulls the first spring 4433. Under the hinged action of the first connecting rod 4438 and the positioning shaft 4436, one end of the two clamping rods 4435 is close to each other, so that the two clamping blocks 4437 are close to the clamping screw rod 414. At this time The torque overload protector 413 detects that the torque of the motor 411 driving the screw rod 414 exceeds the set value, and immediately shuts down the motor 411 through the interlocking circuit 415 to stop the screw rod 414 from running, thereby preventing the slider 43 from driving the movable rod 44 to continue to rise, thereby realizing automatic adjustment of the tension of the electrode wire. At the same time, the folding baffle 9 follows the rise and fall of the movable rod 44 to adaptively extend and retract, thereby covering the opening at the front end of the column 41 to prevent the coolant from splashing into the interior of the column 41 and causing damage to the drive mechanism. During wire cutting, the water pipe 8 follows the bracket 4 to move synchronously, so that the coolant always keeps in contact with the electrode wire. There is no need to consider the size of the wire-cut product, which greatly improves the cooling effect on the product and the electrode wire, thereby ensuring the wire cutting effect.

[0049] Several points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0050] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A wire cutting machine for bicycle metal parts, comprising a frame (1), on which (2), a motion module (3), a liquid receiving tank (5), a bracket (4), an assembly frame (6) and a clamp (7) are arranged, characterized in that: The support (4) comprises a column (41), a fixed rod (42), a slider (43) and a movable rod (44); the column (41) is detachably mounted on the free end of the motion module (3); a driving mechanism is arranged inside the column (41); the movable end of the driving mechanism is transmission-connected to the slider (43); the movable rod (44) is arranged on the column (41) through the slider (43) and is in a vertically corresponding relationship with the fixed rod (42); the distance between the fixed rod (42) and the movable rod (44) is adjusted through the driving mechanism and the slider (43); A tension component (443) is elastically installed inside the movable rod (44), one end of the tension component (443) is connected to one end of the electrode wire, and the other end is in elastic contact with the movable end of the driving mechanism; A brake mechanism is provided at the driving shaft of the driving mechanism, and the brake mechanism is electrically connected to the driving mechanism via an interlocking circuit (415); In the initial state, the tensioning component (443) and the movable end of the driving mechanism are in a non-contact state. As the movable rod (44) is lifted, the electrode wire is tightened, so that the other end of the tensioning component (443) is in clamping contact with the movable end of the driving mechanism, thereby triggering the braking mechanism to stop the movement of the driving mechanism, thereby realizing automatic adjustment of the tension of the electrode wire.

2. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: A folding baffle (9) is detachably mounted between the movable rod (44) and the fixed rod (42). The folding baffle (9) is movably placed in front of the column (41) and in sliding contact with the column (41) to seal the notch in front of the column (41). When the piston rod is raised or lowered, one end of the folding baffle (9) follows the moving height of the movable rod (44) to extend and retract to prevent cooling from splashing into the interior of the column (41) and causing damage to the drive mechanism.

3. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: The movable rod (44) is provided with a retractable water pipe (8), and one end of the water pipe (8) is connected to the assembly clamp (442), so that the coolant enters the assembly clamp (442) and flows along the direction of the electrode wire, and the other end of the water pipe (8) is connected to the liquid receiving tank (5) through the pump body to realize water circulation.

4. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: The driving mechanism comprises a motor (411) rotatably mounted at the bottom of the column (41), a coupling (412) fixedly mounted on the output shaft of the motor (411), and a screw rod (414) rotatably mounted at the top of the column (41), wherein the screw rod (414) is threadedly sleeved with the slider (43), and the slider (43) is driven by the motor (411) and the coupling (412) to freely move up and down on the column (41).

5. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: The tensioning assembly (443) includes two groups of symmetrically arranged clamping rods (4435), and the clamping rods (4435) are arranged on each part of the slider (43) through a positioning shaft (4436) and are located on both sides of the screw rod (414). A clamping block (4437) is arranged on one side of each clamping rod (4435). The tensioning assembly (443) also includes a first connecting rod (4438) hinged at one end of the two clamping rods (4435). The tensioning assembly (443) also includes a first spring (4433) and a first connecting block (4434) connected to one end of the first connecting rod (4438). The first spring (4433) is hinged to the first connecting rod (4438) through the first connecting block (4434), and one end of the first spring (4433) is connected to the electrode wire.

6. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: The braking mechanism comprises a torque overload protector (413) arranged between a screw rod (414) and a coupling (412), and an interlocking circuit (415) connected between the torque overload protector (413) and a motor (411).

7. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: An auxiliary rod (45) is provided at the other end of the slider (43), and a second spring (4451), a second connecting block (4452) and a second connecting rod (4453) are provided inside the auxiliary rod (45), wherein the second connecting rod (4453) is hinged at the other end of the clamping rod (4435), and the second spring (4451) is connected to the second connecting rod (4453) through the second connecting block (4452).

8. The wire cutting machine for bicycle metal parts according to claim 1, characterized in that: One end of the first spring (4433) is connected to a pull rod (4431), and a guide sleeve shaft (4432) is arranged inside the movable rod (44) between the first spring (4433) and the conductive wheel (441), and the pull rod (4431) is slidably placed in the guide sleeve shaft (4432), and one end of the electrode wire is connected to the pull rod (4431) and connected to the first spring (4433) through the pull rod (4431).

9. The wire cutting machine for bicycle metal parts according to claim 2, characterized in that: The folding baffle (9) comprises a fixed plate (91), a sliding plate (92) and a connecting plate (93). The number of the sliding plates (92) is multiple and they are telescopically and slidably connected to each other. The connecting plate (93) is slidably mounted on the top sliding plate (92) for connecting to the movable rod (44). The fixed plate (91) is slidably connected to the bottom sliding plate (92) for connecting to the fixed rod (42).

10. The wire cutting machine for bicycle metal parts according to claim 5, characterized in that: The clamping block (4437) is a right-angled trapezoidal structure, and the inclined surface thereof in contact with the screw rod (414) is treated with anti-slip texture.

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