Device for detecting broken line alarm

Abstract

The utility model relates to the technical field of machinery. A device for detecting and alarming broken threads comprises a detection thread which is a cotton thread; the left supporting frame and the right supporting frame are arranged on the left side and the right side, and the left supporting frame and the right supporting frame are each rotationally connected with a heavy hammer; the left supporting frame and the right supporting frame are provided with guide parts used for pulling and guiding cotton threads. The two ends of the cotton thread are connected with the heavy hammers on the left supporting frame and the right supporting frame through the guide parts. The left supporting frame and the right supporting frame are each provided with a limiting pin used for abutting against the upper side of a horizontally-arranged heavy hammer pulled by a cotton thread. At least one of the left supporting frame and the right supporting frame is provided with an inductive switch. The components of the utility model are simple. And whether the cutting line is fractured is easily and quickly detected.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a wire break alarm device. Background Art

[0002] Wire cutting equipment is used to cut slices of wafers, silicon carbide, metals and other materials.

[0003] How to quickly detect the breakage of the cutting wire has always been the direction of continuous improvement in the development of the wire breakage detection device.

[0004] During the wire cutting process, image comparison is mostly used to detect wire breakage in the wire cutting equipment. Although this method is feasible, it is costly and troublesome to maintain.

[0005] CN203805165U discloses a wire break detection device for a multi-wire saw. This patent involves installing a metal wire outside a wire mesh, with both ends of the wire connected to the wire. The wire is then connected in series with two junction boxes, a 2kΩ resistor, a 24V power supply, and a PLC controller. If the wire mesh breaks, the metal wire breaks. This causes a change from a high level to a low level on the digital input terminal controlled by the PLC. Upon receiving the low-level signal, the PLC issues a shutdown command and an alarm.

[0006] The defect of this patent is that the metal wire is connected in series with multiple components, which can easily lead to loose connections between the components and cause false alarms. Utility Model Content

[0007] In view of the problems existing in the prior art, the present invention provides a device for detecting disconnection alarm, which solves at least one of the above technical problems.

[0008] The technical solution of the utility model is: a device for detecting a broken wire alarm, comprising a detection wire, characterized in that the detection wire is a cotton thread;

[0009] It also includes a left support frame and a right support frame arranged on the left and right sides, and a heavy hammer is rotatably connected to each of the left support frame and the right support frame;

[0010] The left support frame and the right support frame are provided with guide components for pulling and guiding the cotton thread;

[0011] Both ends of the cotton thread are connected to the weights on the left support frame and the right support frame through the guide component;

[0012] The left support frame and the right support frame are both equipped with a limit pin for supporting the upper side of a horizontally arranged heavy hammer for pulling the cotton thread;

[0013] An induction switch is installed on at least one of the left support frame and the right support frame, and the induction switch is used to sense whether the heavy hammer is separated from the pulling of the cotton thread.

[0014] The utility model detects the breakage of cotton thread, facilitating the cutting of the cotton thread in the process of wire cutting equipment. By sensing the change in the weight's position through a sensor switch, it is determined that the weight has been released from the pull of the cotton thread and is swinging downward, indicating that the cutting thread has broken. The device has simple components and can easily and quickly detect whether the cutting thread is broken.

[0015] Further preferably, the left support frame and the right support frame are arranged in left-right mirror symmetry.

[0016] Further preferably, the left support frame and the right support frame include an L-shaped mounting plate and an L-shaped mounting piece, and the L-shaped mounting plate includes a first bending portion and a second bending portion perpendicular to each other;

[0017] The left support frame and the second bending portion of the right support frame are arranged adjacent to each other, and the thickness direction is the front-to-back direction;

[0018] The left support frame and the first bending portion of the right support frame are arranged in parallel, and the thickness direction is the left-right direction;

[0019] A mounting hole is provided on the first bending portion;

[0020] The weight is rotatably connected to the second bending portion, and the limiting pin is installed on the second bending portion;

[0021] The L-shaped mounting piece includes a third bending portion and a fourth bending portion perpendicular to each other;

[0022] The thickness direction of the third bent portion is the front-to-back direction, and the thickness direction of the fourth bent portion is the up-down direction;

[0023] The L-shaped mounting piece is detachably mounted on the second bending portion.

[0024] Further preferably, the guide component includes a guide plate and a winding shaft;

[0025] The guide plate and the winding shaft are arranged in front and behind each other;

[0026] The front end of the guide plate is provided with a notch for embedding the cotton thread;

[0027] The notch is directly opposite to the connection between the weight and the cotton thread;

[0028] The cotton thread passes through the left support frame in sequence from the weight of the left support frame, the gap on the left support frame, the winding shaft on the left support frame, the winding shaft on the right support frame, the gap on the right support frame to the weight of the right support frame.

[0029] Further preferably, the guide plate is detachably installed on the fourth bending part.

[0030] The front end of the guide plate extends out of the front end of the fourth bending part.

[0031] Further preferably, a strip-shaped gap with a length direction being the front-back direction is formed on the first bending part, and the two ends of the strip-shaped gap are in communication with the mounting hole respectively.

[0032] Further preferably, the weight is connected with the cotton thread through a butterfly screw.

[0033] Further preferably, the left support frame and the right support frame are both connected with a rotating shaft which rotates the weight.

[0034] Further preferably, the rear end part of the rotating shaft is provided with an outward protruding part which abuts against the rear side of the weight.

[0035] The front end part of the rotating shaft is in threaded connection with a nut.

[0036] The weight is rotatably installed between the outward protruding part and the nut.

[0037] Further preferably, the circumferential length of the weight far from the rotating shaft is greater than the circumferential length of the weight adjacent to the rotating shaft.

[0038] Compared with the prior art, the present application has the following advantages:

[0039] The device has simple structure and can quickly detect whether the cutting thread is broken. When the weight passes through the inductive switch, it is judged that the weight is pulled away from the cotton thread, and the cutting thread is broken. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 Fig. 1 is a structural schematic view of a specific embodiment 1 of the present application;

[0041] Figure 2 Fig. 2 is a structural schematic view of another perspective of the specific embodiment 1 of the present application. DETAILED DESCRIPTION

[0042] Referring to Figure 1 and Figure 2Specific embodiment 1, a device for detecting a broken wire alarm, includes a detection line, which is a cotton thread 16; a left support frame 1 and a right support frame 10, each of which is rotatably connected to a weight; a guide component for pulling and guiding the cotton thread 16 is installed on the left support frame 1 and the right support frame 10; both ends of the cotton thread 16 are connected to the weights on the left support frame 1 and the right support frame 10 through the guide component; a limit pin 7 is installed on each of the left support frame 1 and the right support frame 10 for supporting the upper side of the weight arranged horizontally by the cotton thread; at least one of the left support frame 1 and the right support frame 10 is installed with a sensor switch 5, which is used to sense whether the weight has been released from the pull of the cotton thread. The sensor switch can be located on the downward trajectory of the weight. Alternatively, the sensor switch is directly opposite the weight pulled by the cotton thread. Once the cotton thread breaks, the weight cannot be detected in front of the sensor switch, and it is determined to be a cut break.

[0043] The induction switch is an infrared induction switch or a proximity switch.

[0044] The utility model detects the breakage of the cotton thread 16, facilitating the cutting of the cotton thread 16 by the wire cutting device when the cutting thread breaks. By sensing the change in the weight's position through the induction switch, it is determined that the weight has been released from the pull of the cotton thread 16 and is swinging downward, indicating that the cutting thread has broken. The device has simple components and can easily and quickly detect whether the cutting thread is broken.

[0045] The left supporting frame 1 and the right supporting frame 10 are arranged in a mirror-symmetrical manner. The weight installed on the left supporting frame is a left weight 6, and the weight installed on the right supporting frame 10 is a right weight 11.

[0046] The left support frame and the right support frame include an L-shaped mounting plate and an L-shaped mounting piece, the L-shaped mounting plate includes a first bent portion and a second bent portion perpendicular to each other; the second bent portions of the left support frame and the right support frame are adjacent to each other, and the thickness direction is the front-to-back direction; the first bent portions of the left support frame and the right support frame are parallel to each other, and the thickness direction is the left-to-right direction; a mounting hole is provided on the first bent portion; a heavy hammer is rotatably connected to the second bent portion, and a limiting pin is installed on the second bent portion; the L-shaped mounting piece includes a third bent portion and a fourth bent portion perpendicular to each other; the thickness direction of the third bent portion is the front-to-back direction, and the thickness direction of the fourth bent portion is the up-down direction; the L-shaped mounting piece can be detachably mounted on the second bent portion.

[0047] The L-shaped mounting piece and the clamping plate 17 are clamped on both sides of the second bent portion in the thickness direction. The second bent portion is provided with a waist-shaped hole. The L-shaped mounting piece and the clamping plate 17 are connected by bolts passing through the waist-shaped hole. The clamping plate is provided with a threaded hole for the threaded bolt.

[0048] Specifically, the left support frame 1 includes a left L-shaped mounting plate and a left L-shaped mounting piece 3, and the right support frame 10 includes a right L-shaped mounting plate and a right L-shaped mounting piece 14. The left L-shaped mounting plate and the right L-shaped mounting plate are arranged in a mirror-symmetrical manner. The left L-shaped mounting piece 3 and the right L-shaped mounting piece 14 are arranged in a mirror-symmetrical manner.

[0049] The left and right L-shaped mounting plates each include a first bend and a second bend perpendicular to each other. The left and right support frames 1 and 10 are adjacent to each other at their second bends, with their thicknesses extending in the front-to-back direction. The left and right support frames 1 and 10 are arranged parallel to each other at their first bends, with their thicknesses extending in the left-to-right direction. A mounting hole is provided on the first bend. A weight is rotatably connected to the second bend, and a limit pin is installed on the second bend. The left and right L-shaped mounting plates 3 and 14 each include a third and fourth bend perpendicular to each other. The thickness of the third bend extends in the front-to-back direction, while the thickness of the fourth bend extends in the up-down direction.

[0050] The guide component includes a guide plate and a winding shaft; the guide plate and the winding shaft are arranged in a front-to-back relationship; a notch is formed at the front end of the guide plate for inserting cotton thread 16; the notch is directly opposite the connection between the weight and the cotton thread 16; the cotton thread 16 passes from the weight of the left support frame 1 through the notch on the left support frame 1, the winding shaft on the left support frame 1, the winding shaft on the right support frame 10, the notch on the right support frame 10, and finally to the weight of the right support frame 10. The guide plate on the left support frame is referred to as the left guide plate 2, and the guide plate on the right support frame 10 is referred to as the right guide plate 13. The winding shaft on the left support frame 1 is referred to as the left end winding shaft 4. The winding shaft on the right support frame 10 is referred to as the right end winding shaft 15.

[0051] The guide plate is detachably mounted on the fourth bending portion; the front end of the guide plate extends beyond the front end of the fourth bending portion.

[0052] A strip-shaped notch is provided on the first bending portion, the length direction of which is the front-to-back direction, and both ends of the strip-shaped notch are respectively connected to the mounting holes.

[0053] Weight links to each other with cotton thread 16 by butterfly screw. Left weight 6 links to each other with cotton thread 16 by left butterfly screw 9. Right weight 11 links to each other with cotton thread 16 by right butterfly screw 12.

[0054] The left support frame 1 and the right support frame 10 are both connected with a rotating shaft 8 for rotatingly connecting a heavy hammer.

[0055] The rear end of the rotating shaft is provided with an outer convex portion which abuts against the rear side of the heavy hammer; the front end of the rotating shaft is threadedly connected with the nut; and the heavy hammer is rotatably installed between the outer convex portion and the nut.

[0056] The circumferential length of the weight away from the rotating shaft is greater than the circumferential length of the weight adjacent to the rotating shaft.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A device for detecting disconnection alarm, comprising a detection line, characterized in that: The detection line is a cotton thread; It also includes a left support frame and a right support frame arranged on the left and right sides, and a heavy hammer is rotatably connected to each of the left support frame and the right support frame; The left support frame and the right support frame are provided with guide components for pulling and guiding the cotton thread; Both ends of the cotton thread are connected to the weights on the left support frame and the right support frame through the guide component; The left support frame and the right support frame are both equipped with a limit pin for supporting the upper side of a horizontally arranged heavy hammer for pulling the cotton thread; An induction switch is installed on at least one of the left support frame and the right support frame, and the induction switch is used to sense whether the heavy hammer is separated from the pulling of the cotton thread.

2. The device for detecting disconnection alarm according to claim 1, characterized in that: The left support frame and the right support frame are arranged in a mirror-symmetrical manner.

3. The device for detecting disconnection alarm according to claim 1, characterized in that: The left support frame and the right support frame each include an L-shaped mounting plate and an L-shaped mounting piece, and the L-shaped mounting plate includes a first bending portion and a second bending portion that are perpendicular to each other; The left support frame and the second bending portion of the right support frame are arranged adjacent to each other, and the thickness direction is the front-to-back direction; The left support frame and the first bending portion of the right support frame are arranged in parallel, and the thickness direction is the left-right direction; A mounting hole is provided on the first bending portion; The weight is rotatably connected to the second bending portion, and the limiting pin is installed on the second bending portion; The L-shaped mounting piece includes a third bending portion and a fourth bending portion perpendicular to each other; The thickness direction of the third bent portion is the front-to-back direction, and the thickness direction of the fourth bent portion is the up-down direction; The L-shaped mounting piece is detachably mounted on the second bending portion.

4. The device for detecting disconnection alarm according to claim 3, characterized in that: The guide component includes a guide plate and a winding shaft; The guide plate and the winding shaft are arranged in front and behind each other; The front end of the guide plate is provided with a notch for embedding the cotton thread; The notch is directly opposite to the connection between the weight and the cotton thread; The cotton thread passes through the notch on the left support frame, the winding shaft on the left support frame, the winding shaft on the right support frame, the notch on the right support frame and reaches the weight of the right support frame in sequence.

5. The device for detecting disconnection alarm according to claim 4, characterized in that: The guide plate is detachably mounted on the fourth bending portion; The front end of the guide plate extends beyond the front end of the fourth bending portion.

6. The device for detecting disconnection alarm according to claim 3, characterized in that: The first bending portion is provided with a strip-shaped notch whose length direction is the front-to-back direction, and both ends of the strip-shaped notch are respectively connected to the mounting holes.

7. The device for detecting disconnection alarm according to claim 1, characterized in that: The weight is connected to the cotton thread through a butterfly screw.

8. The device for detecting disconnection alarm according to claim 1, characterized in that: The left support frame and the right support frame are both connected with a rotating shaft which is rotatably connected to the heavy hammer.

9. The device for detecting disconnection alarm according to claim 8, characterized in that: The rear end portion of the rotating shaft is provided with an outer protrusion that abuts against the rear side of the heavy hammer; The front end of the rotating shaft is threadedly connected to the nut; The weight is rotatably mounted between the outer protrusion and the nut.

10. The device for detecting disconnection alarm according to claim 8, characterized in that: The circumferential length of the weight away from the rotation shaft is greater than the circumferential length of the weight adjacent to the rotation shaft.

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