Wire cutting machine tool automatic wire threading guide mechanism

Abstract

The application provides a wire cutting machine tool automatic wire feeding guide mechanism. The application solves the problem that when the water flow contains many impurities, the internal structure of the machine head is abraded, the water flow is uneven, and the wire feeding is unsuccessful. The application directly drives the wire guide tube to pass through the upper machine head and align with the lower machine head after the workpiece, directly feeds the wire in the wire guide tube into the lower machine head, greatly improves the accuracy of wire feeding, and effectively reduces the number of wire feeding failures.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of processing equipment, in particular to a wire cutting machine tool automatic threading guide mechanism. BACKGROUND

[0002] In the automatic threading process of a slow wire cutting machine tool, a set of wire feeding wheels are used to feed the wire, and the wire needs to be guided by a jet at the same time. The water quality requirement is high. When there are many impurities in the water flow, the internal structure of the machine head will be worn out, causing uneven water flow, resulting in unsuccessful wire feeding. After detection and re-wire feeding, the processing is more inconvenient. SUMMARY

[0003] The present application provides a wire cutting machine tool automatic threading guide mechanism that is more accurate in wire feeding.

[0004] The purpose of the present application is achieved by the following technical solution: a wire cutting machine tool automatic threading guide mechanism is provided on the machine tool, characterized in that it includes a wire guide pipe, a wire supply and tension system arranged in sequence along the wire feeding direction, a wire feeding wheel for conveying the wire, a cutting mechanism, an upper machine head, a workpiece, a lower machine head, and a wire collecting wheel. The machine tool is provided with a driving device for driving the wire guide pipe to move towards the lower machine head. The upper machine head is provided with an open-eye die for clamping the wire. The wire guide pipe passes through the upper machine head and the workpiece.

[0005] As a preferred embodiment, the wire guide pipe passes through the lower machine head.

[0006] As a preferred embodiment, a centering mechanism is provided between the workpiece and the lower machine head to align the wire guide pipe with the lower machine head.

[0007] As a preferred embodiment, the wire feeding wheel is rotatably arranged on a sliding plate, and the wire guide pipe is fixedly arranged on the sliding plate. The sliding plate is movably arranged on a base plate, and two sliding rails are fixedly arranged on the base plate. The two sides of the sliding plate are movably arranged on the sliding rails. A driving device is fixedly arranged on the base plate for driving the sliding plate to move towards the upper machine head. The wire guide pipe is fixedly arranged on the sliding plate through a mounting seat.

[0008] As preferred, the upper machine head is provided with a through hole penetrating the upper machine head, the guide tube is inserted into the through hole, a first movable slot is provided on both sides of the through hole, the first movable slot is located in the upper machine head, a slider capable of moving towards the through hole is movably arranged in the first movable slot, a guide groove extending upwards and communicating with the upper machine head is provided in the first movable slot, a connecting rod fixedly arranged on the upper end of the slider is clamped in the guide groove, the opening and closing eye mold is fixedly arranged on the upper end of the connecting rod, a spring for driving the slider to move towards the through hole is fixedly arranged on the side of the first movable slot away from the through hole, two second movable slots communicating with the first movable slot are provided on the side wall of the upper machine head, a connecting plate is arranged in the second movable slot, the connecting plate can move along the length direction of the second movable slot, a push plate fixedly arranged on the end of the connecting plate away from the slider abuts against the side wall of the upper machine head, and a driving mechanism for driving the two push plates to move towards the two sides of the upper machine head is arranged on the upper machine head.

[0009] As preferred, a thread clamping groove for clamping the thread is provided on the end face of the opening and closing eye mold towards the guide tube.

[0010] As preferred, the driving mechanism comprises a driving plate movably arranged on the side wall of the upper machine head and capable of moving in the vertical direction, the driving plate is located between the two push plates, a first inclined surface is provided on the side of the push plate towards the driving plate, the first inclined surface gradually inclines towards the driving plate from top to bottom, a second inclined surface matched with the first inclined surface is provided on the side of the driving plate towards the push plate, the first inclined surface on the push plate always abuts against the second inclined surface, and a first cylinder for driving the push plate to move in the vertical direction is arranged on the upper machine head.

[0011] As preferred, the centering mechanism comprises a sleeve, a tapered hole penetrating the sleeve along the thread feeding direction is provided on the sleeve, the thread penetrates the tapered hole, the diameter of the tapered hole gradually decreases from top to bottom, and the minimum diameter of the tapered hole is greater than the diameter of the guide tube.

[0012] As preferred, an opening penetrating the sleeve along the vertical direction and communicating with the tapered hole in the sleeve is provided on the side wall of the sleeve, the width of the opening is greater than the diameter of the thread, and a second cylinder for driving the sleeve to move away from the thread is arranged on one side of the sleeve.

[0013] As preferred, the centering mechanism comprises two limiting plates movably arranged on both sides of the guide tube and not located in the same plane, a notch is provided on the side of the limiting plate towards the guide tube, and a second cylinder for driving the limiting plate to move towards the guide tube is arranged on the end of the limiting plate away from the guide tube.

[0014] Compared with the prior art, the present application has the following beneficial effects: the water jet guide is replaced by the guide wire pipe, the driving device directly drives the guide wire pipe to pass through the upper machine head and directly feeds the wire to the workpiece, the accuracy of wire feeding is greatly improved, and the number of wire feeding failures is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a whole structure view of example 1;

[0016] Figure 2 is a cutaway view of the upper machine head;

[0017] Figure 3 is a whole structure view of the upper machine head;

[0018] Figure 4 is Figure 2 is an enlarged view of A in FIG. 4;

[0019] Figure 5 is a cutaway view of the centering mechanism of example 1;

[0020] Figure 6 is a schematic view of the upper machine head of example 1;

[0021] Figure 7 is a schematic view of the internal structure of the upper machine head in example 1;

[0022] Figure 8 is Figure 7 is an enlarged view of B in FIG. 5;

[0023] Figure 9 is a schematic view of the centering mechanism of example 1;

[0024] Figure 10 is a schematic view of the centering mechanism in example 3;

[0025] Figure 11 is Figure 1 is an enlarged view of C in FIG. 6;

[0026] Figure 12 is a schematic view of the structure of example 2;

[0027] Figure 13 is a schematic view of the structure after resetting on the slide plate.

[0028] Marked in the figure: 1, guide tube; 2, wire feeding wheel; 3, upper head; 4, workpiece; 5, lower head; 6, wire collecting wheel; 7, centering mechanism; 8, through hole; 9, first movable groove; 10, sliding block; 11, guide groove; 12, connecting rod; 13, opening and closing eye die; 14, spring; 15, second movable groove; 16, connecting plate; 17, push plate; 18, driving mechanism; 19, wire clamping groove; 20, driving plate; 21, first inclined surface; 22, second inclined surface; 23, first cylinder; 24, sleeve; 25, conical hole; 26, opening; 27, second cylinder; 28, limiting plate; 29, notch; 30, sliding plate; 31, bottom plate; 32, sliding rail; 33, driving device; 34, mounting seat. DETAILED DESCRIPTION

[0029] The application will be further described below in conjunction with the embodiments shown in the accompanying drawings:

[0030] Example 1

[0031] As shown in Figures 1-9 , Figure 11 and Figure 13 , the wire cutting machine tool automatic wire feeding guide mechanism is arranged on the machine tool, including a guide tube 1, a wire supply and tension system arranged in the wire feeding direction, a wire feeding wheel 2 for conveying the wire, a cutting device, an upper head 3, a workpiece 4, a lower head 5 and a wire collecting wheel 6, the machine tool is provided with a driving device 33 for driving the guide tube 1 to move towards the lower head 5, the upper head 3 is provided with an opening and closing eye die 13 for clamping the wire, and the guide tube 1 penetrates through the upper head 3 and the workpiece 4. The guide tube 1 is directly driven by the driving device 33 to pass through the upper head 3 and the workpiece 4 and align with the lower head 5, and the wire in the guide tube 1 is directly fed into the lower head 5, which greatly improves the accuracy of wire feeding and effectively reduces the number of wire feeding failures.

[0032] The wire feeding wheel 2 is rotatably arranged on a sliding plate 30, the wire guide tube 1 is fixedly arranged on the sliding plate 30, the sliding plate 30 is movably arranged on a base plate 31, two sliding rails 32 are fixedly arranged on the base plate 31, the sliding plate 30 is movably arranged on the sliding rails 32, a driving device 33 for driving the sliding plate 30 to move towards the upper head 3 is fixedly arranged on the base plate 31, and the wire guide tube 1 is fixedly arranged on the sliding plate 30 through a mounting seat 34. The driving device 33 is a third cylinder, the cutting device is below the wire guide tube 1, the upper head 3 is provided with an open-close eye die 13 and an openable and closable conducting block and an opening and closing system, the lower head 5 is provided with an open-close eye die 13 and an openable and closable conducting block and an opening and closing system, when working for the first time, the wire is manually threaded through the wire feeding and tension system and the wire feeding wheel 2, and is threaded into the wire guide tube 1, the wire is cut through the cutting device after passing through the wire guide tube 1, the two wire feeding wheels 2 clamp the wire, the sliding plate 30 is driven to move downwards by the third cylinder, the wire feeding wheel 2 and the wire guide tube 1 are driven to move downwards, at this time, the open-close eye dies 13 and the conducting blocks on the upper head 3 and the lower head 5 are in the open state, the wire hole diameter on the workpiece 4 is greater than the wire guide tube 1, the wire guide tube 1 can pass through the upper head 3, the workpiece 4 and the lower head 5 and is located above the wire collecting wheel 6, the wire is driven to move downwards by the wire feeding wheel 2, until the lower end of the wire is fed into the two wire collecting wheels 6, the wire collecting wheel 6 stops rotating, the sliding plate 30 is driven to move upwards and reset by the third cylinder, the wire feeding is completed, the open-close eye dies 13 and the conducting blocks in the upper head 3 and the lower head 5 are closed, and the workpiece 4 is cut, when the workpiece 4 is cut, the wire is cut by the cutting device, the wire collecting wheel 6 drives the cut wire to be fed out of the machine tool, and the above process is repeated for processing.

[0033] The workpiece 4 and the lower head 5 are provided with a centering mechanism 7 for aligning the wire guide tube 1 with the lower head 5. The centering mechanism 7 comprises a sleeve 24, a tapered hole 25 penetrating the sleeve 24 in the wire feeding direction is formed in the sleeve 24, the wire penetrates the tapered hole 25, the diameter of the tapered hole 25 gradually decreases from top to bottom, and the minimum diameter of the tapered hole 25 is greater than the diameter of the wire guide tube 1. An opening 26 penetrating the sleeve 24 in the vertical direction and communicating with the tapered hole 25 in the sleeve 24 is formed in the side wall of the sleeve 24, the width of the opening 26 is greater than the diameter of the wire, and a second cylinder 27 for driving the sleeve 24 to move away from the wire is arranged on one side of the sleeve 24. When the wire guide tube 1 moves towards the lower head 5 after passing through the upper head 3 and the workpiece 4 under the driving of the driving device 33, the wire guide tube 1 is inserted into the tapered hole 25 on the sleeve 24 after a certain degree of deviation, the deviated wire guide tube 1 is reset through the tapered hole 25, and the wire guide tube 1 always faces the lower head 5 after passing through the sleeve 24.

[0034] The upper machine head 3 is provided with a through hole 8 penetrating the upper machine head 3, the guide wire tube 1 is inserted into the through hole 8, a first movable slot 9 is provided on both sides of the through hole 8, the first movable slot 9 is located in the upper machine head 3, a slider 10 capable of moving towards the through hole 8 is movably arranged in the first movable slot 9, a guide groove 11 extending upwards and communicating to the upper side of the upper machine head 3 is provided on the first movable slot 9, a connecting rod 12 clamped in the guide groove 11 is fixedly arranged on the upper end of the slider 10, an opening and closing eye die 13 is fixedly arranged on the upper end of the connecting rod 12, a spring 14 for driving the slider 10 to move towards the through hole 8 is fixedly arranged on the side of the first movable slot 9 away from the through hole 8, two second movable slots 15 respectively communicating to the first movable slot 9 are provided on the side wall of the upper machine head 3, a connecting plate 16 is arranged in the second movable slot 15, the connecting plate 16 can move along the length direction of the second movable slot 15 along with the slider 10, a push plate 17 abutting against the side wall of the upper machine head 3 is fixedly arranged on the end of the connecting plate 16 away from the slider 10, and a driving mechanism 18 for driving the two push plates 17 to move towards the two sides of the upper machine head 3 is arranged on the upper machine head 3. A thread clamping groove 19 for clamping the thread is provided on the end face of the side of the opening and closing eye die 13 facing the guide wire tube 1. The driving mechanism 18 comprises a driving plate 20 movably arranged on the side wall of the upper machine head 3 and capable of moving in the vertical direction, the driving plate 20 is located between the two push plates 17, a first inclined surface 21 is provided on the side of the push plate 17 facing the driving plate 20, the first inclined surface 21 gradually inclines towards the driving plate 20 from top to bottom, a second inclined surface 22 matched with the first inclined surface 21 is provided on the side of the driving plate 20 facing the push plate 17, the first inclined surface 21 on the push plate 17 always abuts against the second inclined surface 22, a first air cylinder 23 for driving the push plate 17 to move in the vertical direction is arranged on the upper machine head 3, the driving plate 20 is driven to move downwards by the first air cylinder 23, the push plate 17 is driven to move towards the two sides of the driving plate 20 by the second inclined surface 22 always abutting against the first inclined surface 21 on the push plate 17, the slider 10 in the upper machine head 3 is driven to move away from the through hole 8, so that the two opening and closing eye dies 13 are located outside the through hole 8, the guide wire tube 1 is pulled away from the upper machine head 3 after the thread is fed, the driving plate 20 moves upwards and resets, the push plate 17 and the slider 10 move towards the through hole 8 under the driving of the spring 14, until the thread clamping groove 19 on the opening and closing eye die 13 is buckled on the outer periphery of the thread.

[0035] Example 2

[0036] The difference from example 1 is that, as Figure 12As shown, the lower head 5 is an integral eye mold 13. When feeding the wire, the wire guide tube 1 moves downward under the drive of the third cylinder and passes through the upper head 3, the workpiece 4 and the centering mechanism 7, and is located above the above-mentioned lower head 5. The wire is fed into the lower head 5 by rotating the wire feeding wheel 2. After passing through the lower head 5, the wire is inserted between the two take-up wheels.

[0037] Example 3

[0038] The difference from Example 1 is that Figure 10 As shown, the centering mechanism 7 includes two limit plates 28 that are movably arranged on both sides of the wire guide tube 1 and are not located on the same plane. The limit plate 28 is provided with a notch 29 on the side facing the wire guide tube 1. The end of the limit plate 28 away from the wire guide tube 1 is provided with a second cylinder 27 for driving the limit plate 28 to move in the direction of the wire guide tube 1. The two limit plates 28 that are not located on the same plane are driven by the two second cylinders 27 to move toward the wire guide tube 1 until the notch 29 on the limit plate 28 is engaged with the outside of the wire guide tube 1, thereby limiting the position of the wire guide tube 1. At this time, the wire guide tube 1 is facing the lower machine head 5.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. The guide mechanism for automatic wire threading of a wire cutting machine is provided on the machine tool and is characterized in that: The invention comprises a wire guide tube (1), a wire feeding and tensioning system arranged in sequence along the wire feeding direction, a wire feeding wheel (2) for conveying the wire, a cutting mechanism, an upper machine head (3), a workpiece (4), a lower machine head (5) and a wire collecting wheel (6), wherein the machine tool is provided with a driving device (33) for driving the wire guide tube (1) to move in the direction of the lower machine head (5), an opening and closing eye mold (13) for clamping the wire is provided in the upper machine head (3), and the wire guide tube (1) passes through the upper machine head (3) and the workpiece (4). The upper machine head (3) is provided with a through hole (8) passing through the upper machine head (3), the wire guide tube (1) is inserted into the through hole (8), and a first movable groove (9) is provided on both sides of the through hole (8), the first movable groove (9) is located in the upper machine head (3), a slider (10) capable of moving toward the through hole (8) is movably provided in the first movable groove (9), the first movable groove (9) is provided with a guide groove (11) extending upward and connected to the upper side of the upper machine head (3), and the upper end of the slider (10) is fixed with a clamping member that is engaged in the guide groove (11). The connecting rod (12) is fixedly provided with an opening and closing eye mold (13) on the upper end of the connecting rod (12) for buckling on the periphery of the silk thread and guiding the silk thread. A spring (14) for driving the slider (10) to move toward the through hole (8) is fixedly provided on the side of the first movable groove (9) away from the through hole (8). The side wall of the upper head (3) is provided with two second movable grooves (15) respectively connected to the first movable groove (9). A connecting plate (16) is provided in the second movable groove (15). The connecting plate (16) can move along the second movable groove (10) along with the slider (10). 5) moves in the longitudinal direction, the end of the connecting plate (16) away from the slider (10) is fixedly provided with a push plate (17) abutting against the side wall of the upper machine head (3), and the upper machine head (3) is provided with a driving mechanism (18) for driving the two push plates (17) to move in the directions of both sides of the upper machine head (3), and the end surface of the opening and closing eye mold (13) facing the guide wire tube (1) is provided with a wire clamping groove (19) for clamping the wire, and the driving mechanism (18) includes a driving plate (20) movably provided on the side wall of the upper machine head (3) and capable of moving in the vertical direction, and the driving plate (20 ) is located between the two push plates (17), and a first inclined surface (21) is provided on the side of the push plate (17) facing the driving plate (20), and the first inclined surface (21) is gradually inclined from top to bottom toward the driving plate (20), and a second inclined surface (22) is provided on the side of the driving plate (20) facing the push plate (17) to match the first inclined surface (21), and the first inclined surface (21) on the push plate (17) is always in contact with the second inclined surface (22), and a first cylinder (23) for driving the push plate (17) to move in the vertical direction is provided on the upper machine head (3).

2. The guide mechanism for automatic wire threading of a wire cutting machine according to claim 1, characterized in that: The wire guide tube (1) passes through the lower machine head (5).

3. The guide mechanism for automatic wire threading of a wire cutting machine according to claim 2, characterized in that: A centering mechanism (7) is provided between the workpiece (4) and the lower machine head (5) for aligning the wire guide tube (1) with the lower machine head (5).

4. The guide mechanism for automatic wire threading of a wire cutting machine according to claim 1, characterized in that: The wire feeding wheel (2) is rotatably arranged on the slide (30), the wire guide tube (1) is fixedly arranged on the slide (30), the slide (30) is movably arranged on the base plate (31), two slide rails (32) are fixedly arranged on the base plate (31), both sides of the slide (30) are movably arranged on the slide rails (32), a driving device (33) for driving the slide (30) to move toward the upper machine head (3) is fixedly arranged on the base plate (31), and the wire guide tube (1) is fixedly arranged on the slide (30) through the mounting seat (34).

5. The guide mechanism for automatic wire threading of a wire cutting machine according to claim 3, characterized in that: The centering mechanism (7) includes a sleeve (24), which is provided with a tapered hole (25) that passes through the sleeve (24) along the wire feeding direction. The wire passes through the tapered hole (25), and the diameter of the tapered hole (25) gradually decreases from top to bottom. The minimum diameter of the tapered hole (25) is greater than the diameter of the wire guide tube (1).

6. The guide mechanism for automatic wire threading of a wire cutting machine according to claim 5, characterized in that: An opening (26) is provided on the side wall of the sleeve (24), which passes through the sleeve (24) in a vertical direction and is connected to the tapered hole (25) in the sleeve (24). The width of the opening (26) is greater than the diameter of the wire. A second cylinder (27) is provided on one side of the sleeve (24) for driving the sleeve (24) to move in a direction away from the wire.

7. The guide mechanism for automatic wire threading of a wire cutting machine according to claim 3, characterized in that: The centering mechanism (7) comprises two limit plates (28) movably arranged on both sides of the wire guide tube (1) and not located on the same plane, the limit plate (28) is provided with a notch (29) on the side facing the wire guide tube (1), and a second cylinder (27) for driving the limit plate (28) to move in the direction of the wire guide tube (1) is provided at one end of the limit plate (28) away from the wire guide tube (1).

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