TW201811487A - Safety system with human body protection and falling mechanism, machine, and operating method thereof - Google Patents

Abstract

A safety system with human body protection and falling mechanism, a tool machine, and an operating method are provided. The machine includes a cutting kit and a carrier. The cutting kit having a saw blade and a motor is mounted on the carrier. The safety system uses capacitance-type sensor and/or electrostatic sensor that are arranged on a table surface and the saw blade to form a protection zone in order to detect any entered object. A solenoid-valve device is provided in the tool machine for locking the carrier using a latch under a normal condition. The solenoid-valve device can release the carrier and the cutting kit falls along a falling mechanism with the carrier when the system affirms any unsafe factor. The safety mechanism can effectively avoid risk and allows the system to gain extra time to stop the motor.

Description

 Safety system with body protection and lowering mechanism, tool machine and operation method  

The invention relates to a tool machine and a working method with a safety system, in particular to a safety system with a human body protection and descending mechanism, a machine tool machine for setting the safety system, and a related safety system operation method.

On the one hand, the machine tool is convenient for human use of the device for making articles, on the other hand, it is a device that threatens human safety, especially for a cutting machine, in which the tool can process the material into an appliance or a semi-finished product, but it must be used very much. Be careful not to cause physical disability due to temporary intentions or malfunctions, and even serious people may have life and worry.

Thus, there are conventional techniques for designing safety measures for cutting machines, such as U.S. Patent No. 7,055,417 (Application Date: September 29, 2000; Announcement Date: June 6, 2006), which discloses a relatively advanced safety protection device. The way to protect it is to put a charge on the cutter of the cutting machine, and the human body is a charged body, so once the human body touches the saw blade, the electric charge on the saw blade is derived and sensed through the sensor. The electrical signal generated by this change can trigger a safety device, such as a brake system of the tool, for safety protection purposes. Taking a circular knife-shaped saw blade as an example, when the safety device is triggered, the safety device recovers the round knife-shaped saw blade, or performs braking with a block to prevent the saw blade from continuing to operate.

The invention discloses a safety system and a working method applied to a tool machine, and proposes a tool machine safety measure different from the prior art, in which a safety system with a human body protection and a descending mechanism is introduced, and various measures are matched with each other. Under, provide a mechanism for effective security protection.

According to one of the embodiments, the safety system with the human body protection and lowering mechanism is applied to a machine tool table, such as a cutting machine tool, which mainly has a tool group and a bearing mechanism for carrying the tool group, and the tool group includes A saw blade and a driving unit for driving the saw blade to operate, the tool set is carried on the supporting mechanism and fixed on the tool machine table by an actuating device.

The main component of the safety system with the body protection and descending mechanism has a first sensing device, which is arranged in the tool machine for forming a detection range on the surface of the tool machine to detect objects entering the detection range. The first sensing device is, for example, a capacitive sensor based on a capacitive coupling principle disposed near the tool group.

The safety system further includes a second sensing device disposed on the tool set for forming a protective range on the saw blade for detecting an object approaching or touching the saw blade. The second sensing device may be a capacitive sensing device based on a capacitive coupling principle or an electrostatic sensing device disposed on the tool set.

In one embodiment, the capacitive sensor can be a wireless capacitance sensing device disposed on the saw blade, and the protection range is formed on the saw blade by a capacitive coupling principle, and the control unit is connected by a wireless communication means.

The safety system includes an actuating device that controls the attachment and release of the elastic fixture, such as a solenoid valve device, to secure the load bearing mechanism of the tool set with a click. Dropping mechanism In one embodiment, the carrier is coupled to the actuator at one end and a pivotable pivot at the other end to the tooling station. When there is a safety concern, the actuating device releases the carrying mechanism according to the control signal, so that the carrying mechanism is tilted down to a specific position with the pivot as a rotating shaft.

The safety system includes a control unit electrically connected to the first sensing device, the second sensing device, a driving unit and an actuating device for driving the saw blade, and the control unit detects the sensing device according to the various types. Controlling the actuating device to release the carrier mechanism by information to the object, such as retracting the cassette, causing the tool set and its carrier mechanism to descend to a specific position, avoiding danger, and obtaining time to effectively cause the drive unit to stop operating.

The invention contained in the disclosure relates to a machine tool using the above-described safety system with a body protection and lowering mechanism.

The operation method of the safety system with the human body protection and the lowering mechanism includes detecting the object entering the detection range by using the first sensing device, and detecting the object approaching or touching the saw blade with the second sensing device. When the control unit obtains the signal that the first sensing device or the second sensing device detects the object, the control device is controlled to release the tool group and its supporting mechanism to drop to a specific position.

In order to further understand the technology, method and effect of the present invention in order to achieve the intended purpose, reference should be made to the detailed description and drawings of the present invention. The drawings are to be considered in all respects as illustrative and not restrictive

10‧‧‧Tool machine

101‧‧‧Tool set

103‧‧‧ drive shaft

105‧‧‧Drive and support device

107‧‧‧Acoustic device

109‧‧‧Control circuit

111‧‧‧Sensor device

112‧‧‧Sensor 2

12‧‧‧Items to be cut

201‧‧‧Control unit

203‧‧‧Actuator control unit

205‧‧‧Loading mechanism

207‧‧‧First sensing unit

209‧‧‧Second sensing unit

211‧‧‧Tool machine

213‧‧‧ drive unit

215‧‧‧Tool set

30‧‧‧Tool machine

301‧‧‧Tool set

303‧‧‧Loading mechanism

305‧‧‧ drive unit

307‧‧‧Control unit

309‧‧‧ pivot

313‧‧‧Solenoid valve device

315‧‧‧First sensing device

317‧‧‧Second sensing device

319‧‧‧Connected device

321‧‧‧Gear drive unit

323‧‧‧Chain

40‧‧‧Tool machine

401‧‧‧Tool set

403‧‧‧Loading mechanism

405‧‧‧ drive unit

415‧‧‧First sensing device

417‧‧‧Second sensing device

407‧‧‧Control unit

409‧‧‧First solenoid valve device

410‧‧‧Second solenoid valve device

419‧‧‧First connection device

420‧‧‧Second connection

421‧‧‧First gear chain set

422‧‧‧Second gear chain set

50‧‧‧Tool machine

501‧‧‧Tool set

503‧‧‧Loading mechanism

505‧‧‧ drive unit

507‧‧‧Solenoid valve device

513‧‧‧Capacitive sensing device

515‧‧‧Wireless sensing device

517‧‧‧Control unit

509‧‧‧ pivot

603‧‧‧ Controller

601‧‧‧Wireless communication unit

605‧‧‧Capacitance sensing unit

607‧‧‧Battery Pack

Step S701~S709‧‧‧Reset the flow of the sensor

Step S801~S811‧‧‧ Safety System Operation Process

1 is a schematic view showing an embodiment of a tool machine of a safety system with a human body protection and a lowering mechanism according to the present invention; FIG. 2 is a schematic view showing an embodiment of a circuit unit of a safety system with a human body protection and a lowering mechanism according to the present invention; FIG. 3B is a schematic diagram showing an embodiment of a tool machine platform of a safety system with a human body protection and a lowering mechanism according to the present invention; FIG. 3C is a second schematic view showing an embodiment of a tool machine for a safety system with a human body protection and a lowering mechanism; FIG. 4A is a schematic diagram showing another embodiment of a tool machine platform of a safety system with a human body protection and lowering mechanism according to the present invention; FIG. 4B is a schematic view showing another embodiment of the tool machine platform of the safety system with a human body protection and lowering mechanism of the present invention; FIG. 4C is a third schematic view of another embodiment of the tool machine of the safety system with the human body protection and descending mechanism of the present invention; FIG. 5 shows the third embodiment of the tool machine of the safety system with the human body protection and lowering mechanism of the present invention; A schematic diagram of another embodiment of a tool machine for a safety system of a human body protection and a lowering mechanism; FIG. 6 shows a work applied to the present invention A schematic diagram of a radio receiving circuit of machine sensing device embodiment; FIG. 7 shows the sensor reset safety system operating method according to the present invention, the procedure of Example; FIG. 8 shows the operation flow of process safety system embodiment of the present invention.

The invention described in the disclosure relates to a safety system with a human body protection and lowering mechanism, a tool machine and a working method, such as a cutting machine equipped with a saw blade (such as a circular saw), in order to ensure the operation of the machine tool The safety of the personnel, even taking care of the safety of other personnel close to the machine tool, the machine machine has multiple safety mechanisms to detect any items that are not close to the machine or touch the saw blade, and trigger Safety measures, such as causing the motor that drives the saw blade to stop, include means to immediately power off, use brake lining, apply a destructive block, or even reverse the motor to apply a reverse current. The purpose is to stop the saw blade instantaneously. In one embodiment of the present invention, in addition to the multi-channel safety mechanism, in order to strive for the time and space for the high-speed operation of the saw blade to stop, a mechanism for lowering the overall tool set is proposed to provide a more appropriate safety mechanism.

Schematic diagram of the tool machine example shown in Figure 1.

The illustration is a top view showing a machine tool table 10 with a tool set 101 in the central portion and an item 12 to be cut being input from one end of the machine table. The tool set 101 mainly has a saw blade and a drive circuit for driving the saw blade to operate, such as a motor, as shown, including a drive shaft 103 having a saw blade and a carrier mechanism 105 carrying the cutter set 101. The safety system with the body protection and descending mechanism includes one or more sensing devices disposed around the tool group 101, such as the sensing device 111 and the sensing device 112 shown in the example, such a sensing device such as a capacitor Non-contact sensing device, such as a non-contact sensing device, is arranged in the tool machine to establish an induced magnetic field on the table surface to form a detection range for detecting an incoming object.

The safety system with the body protection and lowering mechanism further includes an actuator 107, such as a solenoid valve device, which is a device that drives the operation of the cassette through the current; or an electromagnet that controls the magnet as a circuit. The embodiment shows that the system is provided with a control circuit 109 electrically connected to the sensing device 111 and the sensing device 112 disposed on the surface of the tool machine 10, and the sensing circuit and the driving circuit disposed on the tool group 101. Further included is an actuation device 107 designed in conjunction with the mechanism.

The actuating device 107 is disposed in the tool machine table 10. The example is disposed on one side of the carrying mechanism 105. The embodiment is a loading mechanism 105 in a fixed position of the card. When the above sensing device (111, 112) detects When there is a safety concern, the associated control circuit 109 will cause the actuating device 107 to retract the latch and release the carrier mechanism 105. In particular, when the carrier mechanism 105 is disengaged from the machine tool table 10, the lowering due to gravity causes a drop. The tool set 101 provides overall safety measures with more time and space, and can effectively stop (reverse operation is one of the ways) in the saw blade, which can ensure user safety.

The control circuit 109 is a core circuit of a safety system with a human body protection and a lowering mechanism, and processes signals generated by the sensing devices, and can control the operation and stop of the driving circuit (one of the preferred ways of stopping the motor to stop the giant chip). And causing the actuating device 107 to release the aforementioned carrier mechanism 105 such that the tool set 101, along with the carrier mechanism 105, produces a descending action.

Figure 2 is a schematic view showing an embodiment of a circuit unit of the safety system of the present invention having a body protection and lowering mechanism.

This example shows a safety system with a body protection and a lowering mechanism applied to a tool machine, in which a control unit 201 is provided. The control unit 201 electrically connects the circuit units, including the sensing circuits, for the control circuit in the safety system. The first sensing unit 207 disposed on the tool machine 211 and the second sensing unit 209 connected to the tool group 215 are thus exemplified. The control unit 201 can obtain the detection signals generated by the first sensing unit 207 and the second sensing unit 209 to determine whether to drive other circuit operations.

The circuit controlled by the control unit 201 includes a driving unit 213 for driving the tool group 215. In a normal operating state, the driving unit 213 operates according to the control signal, for example, controls the rotation speed of the saw blade in the tool group 215, and can be driven through safety concerns. The circuit stops the driving unit 213, and the driving unit 213 is a motor. The means for stopping the driving unit 213 includes powering off to stop the saw motor operation, or forcing the motor to stop in a reverse motor manner. Other means include causing the saw blade to be driven by other braking circuits. The upper piece is used to act, or a destructive blocking block is applied to prevent the saw blade from continuing to rotate, so that a safer effect can be achieved.

The actuating device in the system can be realized by a solenoid valve device. The control unit 201 is electrically connected to the actuating device control unit 203, and also the control circuit of the solenoid valve. The actuating device control unit 203 is generated according to the control unit 201. Controlling the signal and driving the actuating device to operate, taking the solenoid valve as an example, this is driven by an electromagnetic coil, and the direction of the movement of the cassette is controlled by the action of the electromagnetic coil energizing, reverse current or power-off, so that the card can be quickly controlled. The time is retracted, causing the above-described carrier mechanism 205 to be released causing the carrier mechanism 205 to descend along with the tool set 215. For example, when the safety mechanism is activated, the bearing mechanism 205 can be caused to stop together with the tool set 215 to a certain height and then stopped, so that the saw blade on the tool set 215 can leave the object to ensure safety; it is not excluded that the carrying mechanism 205 can be Gravity falls into the tool machine 221.

An embodiment of the tooling machine to which the safety system of the present invention has a body protection and lowering mechanism can be applied to the schematic diagram described in FIG. 3A. The figure shows the main components of the tool machine 30. The tool machine 30 is provided with a tool set 301 and a load bearing mechanism 303 carrying the tool set 301. The tool set 301 is fixed on the support mechanism 303. The main components of the tool set 301 are the saw blade and the drive saw. A drive unit 305 that operates. In actual operation, the driving unit 305, such as a motor, drives the saw blade through a structure such as a gear set, and is lowered to a specific position when the tool set 301 and its supporting mechanism 303 are released.

A first sensing device 315 is disposed in the vicinity of the mesa of the tool machine 30, and is disposed in the machine tool 30 for forming a detection range on the surface of the tool machine 30 for detecting an object entering the detection range. Such as a part of the human body. A second sensing device 317 is disposed on the tool set 301 and can be disposed on the driving shaft of the saw blade to form a protective range on the saw blade for detecting an object approaching or touching the saw blade.

In one embodiment, the first sensing device 315 disposed on the surface of the tool machine 30 is a non-contact sensing device disposed near the tool group 301 (front end, rear end, left and right ends), such as based on capacitive coupling. The principle of the capacitive sensor can include one or a plurality of first sensing devices 315 disposed at a plurality of locations. In this example, the capacitive sensor operating on the principle of capacitive coupling is disposed in front of the tool set 301, that is, the position where the item to be cut enters, and the capacitive sensor establishes an induced magnetic field near the position, when the object enters the protection range. At this time, the operation of the security system will be triggered, and the control unit 307 will interpret and perform subsequent security measures.

In an embodiment, the second sensing device 317 disposed on the tool set 301 can have several embodiments, one of which is a non-contact sensing device disposed on the tool set 301, and is also based on a capacitive coupling principle. A capacitive sensor that establishes an induced magnetic field on the saw blade to form a protective area.

In another embodiment, the second sensing device 317 can be an electrostatic sensing device disposed on the tool set 301. The contact sensing device can be disposed on the driving shaft of the saw blade. The Darlington trigger method senses the object. In operation, the saw blade itself forms a sensing component that senses the signal of a charged body (such as a human body) using a grounding wire, Darlington triggering method (using a Darlington amplifier circuit to amplify the human body trigger signal). Set the threshold of the electrostatic sensing device (depending on the material difference). When the change in charge is greater than the threshold, for example, when the charged human body touches, it constitutes an inductive trigger.

In the embodiment of the tool machine 30, the tool machine 30 has a connection relationship with the tool set 301. The tool set 301 is mounted on the support mechanism 303, and the tool machine 30 is provided with a solenoid valve device 313 for fixing. The carrier mechanism 303 is in a working position. For example, the solenoid valve device 313 is inserted into the slot of the carrier mechanism 303 with a click, and the other end of the carrier mechanism 303 can be fixed to the tool machine table 30 as shown by the pivotable pivot 309, so that the carrier mechanism 303 is fixed in the working position together with the cutter set 301. In normal operation, the entire working machine 30 operates normally in this state.

In the example shown in FIG. 3A, the tool set 301 is carried on the carrying mechanism 303. The tool set 301 includes a driving unit 305 electrically connected to the control unit 307. The control unit 307 is electrically connected to the electromagnetic valve device 313 and the driving unit 305. Therefore, the control unit 307 can perform security measures according to the information of the object detected by the first sensing device 315 and/or the second sensing device 317, including causing the driving unit 305 to stop the blade motor; or controlling the solenoid valve device 313 to release the bearing. The mechanism 30 causes the position of the cutter set 301 to be input downward relative to the item to be cut.

The safety system with the human body protection and lowering mechanism applied in the tool machine 30 is fixed to the bearing mechanism 303 of the cutter set 301 by a solenoid valve device 313. According to one embodiment of the lowering mechanism, the one end of the carrying mechanism 303 is connected to the electromagnetic valve device 313, and on the left side of the figure, the other end is provided with a pivotable pivot 309, which is connected to the tool machine 30, and is Rotatable connection relationship. When there is a safety concern, the solenoid valve device 313 releases the carrier mechanism 303 according to the control signal generated by the control unit 307, for example, retracting the cassette, so that the carrier mechanism 303 is tilted down to a specific position with the pivot 309 as a rotating shaft. One embodiment is shown in Figure 3B.

FIG. 3B shows that when the system detects a safety concern, the control unit 307 issues a control signal, and the solenoid valve device 313 is driven to retract the cassette to release the carrier mechanism 303, so that the end of the load bearing mechanism 303 and the tool set 301 carried by it are lowered due to the loss of the connection relationship. The other end is still connected to a fixed position of the machine tool table 30 due to the pivot 309. In an embodiment, a variety of anti-landing means may be employed, such as holding the entire load-bearing mechanism 303 and the cutter set 301 by means of a tie, such as a rope, chain, or the like, to avoid damage to the equipment caused by triggering a safety mechanism.

When the tool set 301 is lowered (or dropped) due to gravity, at this moment, under more safety considerations, it is sufficient to obtain time and space (excess space formed when the mechanism is lowered), effectively causing the drive unit 305 to stop operating. .

FIG. 3C shows the connection device 319 implemented by a gear chain set (321, 323). The safety mechanism is proposed in the present invention as described in the above embodiment. When the above sensing device determines that there is a safety concern, the gear driving unit 321 of this example is shown. (For example, the motor) releases the chain 323 according to the control signal generated by the control unit 307, so that the chain is moved by the transmission, and the bearing mechanism 303 of the cutter set 301 is driven to a certain distance, and the damage can be avoided by falling a certain distance. One of the advantages of the mechanism for performing the drop of the carrier mechanism 303 by the gear chain set (321, 323) is that it is convenient to restore the original operational state, and only the control gear drive unit 321 is required to bring the carrier mechanism 303 back to the position before the drop.

4A and 4B are schematic views showing an embodiment of another safety system design in the machine tool table of the present invention.

A tool machine table 40 is shown in FIG. 4A, and a tool set 401 is provided. The tool set 401 is carried on a carrier mechanism 403, and the saw blade of the tool set 401 is driven by a drive unit 405. In terms of safety measures, the tool machine 40 can be provided with one or more sensing devices. In this example, a capacitive sensing device is provided on the surface of the tool machine 40, which is illustrated as a first sensing device 415, and on the saw blade. Another capacitive sensing device can be provided, illustrated as a second sensing device 417 that is electrically coupled to the blade drive shaft. In actual implementation, a plurality of sensing devices, such as the first sensing device 415, may be disposed on the table surface, and the articles (normal objects, or conductive objects) that improperly enter the detection range before and after (or left and right) of the tool group 401 may be separately detected. The second sensing device 417 on the saw blade of the tool set 401 can also be an electrostatic sensing device. The static electricity is first placed on the saw blade, or the static electricity of the original saw blade is led out for sensing. An object that touches the saw blade.

In actual operation, the first sensing device 415 and the second sensing device 417 are safety sensing measures that cooperate with each other, and are mainly capable of sensing a certain part of the human body that improperly enters the protective range when the tool machine 40 is in operation. Trigger subsequent security measures.

According to the embodiment of the safety system with the human body protection and lowering mechanism shown in this example, the first electromagnetic valve device 409 and the second electromagnetic valve fixed to the specific position of the machine are provided on the tool machine table 40 at both ends of the bearing mechanism 403. The number of devices 410, solenoid valve devices is not limited to the examples shown in the figures. The working principle of the solenoid valve device is as follows. According to the control signal generated by the control unit 407, the electromagnetic coil is driven to energize, and the current direction can be controlled, and a reverse current or a power-off operation can be performed to control the movement direction of the cassette, so that Quick retraction.

In the normal operating state, the first solenoid valve device 409 and the second solenoid valve device 410 (or each) respectively secure the carrier mechanism 403 through the cassette so that the tool set 301 can operate in a fixed position.

The triggering strategies implemented by the first sensing device 415 and the second sensing device 417 can be configured according to the design of each sensing device, for example, when the first sensing device such as the capacitive sensing device detects the detection range. The internal object generates a first trigger signal; when the second sensing device such as a capacitive or electrostatic sensing device detects an object approaching or touching the saw blade, a second trigger signal is generated, when the control unit Upon receipt of one of its trigger signals, a subsequent security measure is triggered. Alternatively, when the first sensing device and the second sensing device detect an object, that is, when the control unit receives the first trigger signal and the second trigger signal simultaneously, The possibility of malfunction can be eliminated, that is, safety measures are implemented.

When the control unit confirms that there is a safety concern, in this illustration, the control signal generated by the control unit 407 will drive the driving unit 405 that drives the saw blade to stop, and at the same time, drive the relevant actuator device, such as the first solenoid valve device 409, through the signal. And the second solenoid valve device 410, when the solenoid valve is jammed, releasing the fixed bearing mechanism 403, so that the connection relationship between the tool group 401 and the bearing mechanism 403 and the working machine 40 disappears because of gravity Released to produce the effect of lowering the entire tool set.

As shown in FIG. 4B, the security system includes a control unit 407 and a first sensing device 415 electrically connected thereto, a second sensing device 417, a driving unit 405 for driving the saw blade operation, a first electromagnetic valve device 409 and a Two solenoid valve device 410. When the above safety measure is triggered, the control unit 407 controls the first solenoid valve device 409 and the second solenoid valve device 410 to retract the cassette, and simultaneously releases the carrier mechanism 403, so that the tool group 401 and its carrier mechanism 403 are lowered to a specific position, thereby avoiding danger. And can fight for time to effectively stop the drive unit.

In an embodiment, when the carrying mechanism 403 is dropped, a plurality of anti-landing means can also be used, for example, the first connecting device 419 and the second connecting device 420, such as a rope or a chain, at both ends of the supporting mechanism 403, or exclude other In this way, the entire carrier mechanism 403 and the tool set 401 are held to avoid damage to the device caused by triggering the safety mechanism.

FIG. 4C illustrates the connection device (419) shown in FIG. 4B by using a gear chain group (the first gear chain group 421 and the second gear chain group 422). When the safety mechanism is triggered, the first gear chain group 421 is disposed in the figure. In the left position, the working machine 40 and the carrying mechanism 403 are connected, and the gear driving unit that drives the chain is realized by the motor. The chain can be lowered according to the control signal generated by the control unit 407, and the second gear chain group 422 of the right side is also controlled. The gear drive unit controls the movement of the chain to achieve the purpose of the entire load-bearing mechanism 403 falling, and it is easier to restore the entire machine to an operational state.

FIG. 5 is a schematic view showing an embodiment of a utility device of the present invention using a wireless sensing device. The figure shows that the tool machine 50 includes a tool set 501, has a driving unit 505, and is carried on the carrying mechanism 503. The tool machine 50 is provided with a capacitive sensing device 513, and a wireless sensing device disposed on the saw blade. 515, which may be a capacitive sensing device or an electrostatic sensing device, suitable for capacitive or electrostatic sensing. The circuit embodiment of the wireless sensing device 515 can refer to FIG. 6. The wireless sensing device 515 is capacitively coupled to the saw blade. The principle forms a protective range, in particular, it can be fixed on the saw blade by strong magnets, attaching, etc., and as the saw blade rotates, the control unit 517 of the system is connected by a wireless communication means. Connection methods include Bluetooth communication technology, Near Field Communication (NFC), and regional network technologies.

When the capacitive sensing device 513 or the wireless sensing device 515 is triggered, or both are triggered, the control unit 517 drives the solenoid valve device 507 to retract the latch of the fixed carrier mechanism 503, so that the carrier mechanism 503 is released, so that the tool set The 501 and its carrying mechanism 503 descend or fall due to gravity, and at the same time cooperate with the operation of the driving unit 505 to generate an effective safety mechanism.

The main circuit module of the wireless sensing device 515 is shown in FIG. 6 , which is a capacitive sensing device, and is provided with a controller 603 , and a wireless communication unit 601 , a capacitive sensing unit 605 and a battery connected by the controller 603 . Group 607. The battery pack 607 supplies the device power. In this example, the capacitive sensing unit 605 forms an induced spatial magnetic field on the surface of the saw blade by the principle of capacitive coupling, and generates an electrical signal after the external charged body is induced to generate a magnetic field, as a detection and entry protection. The scope of use. The wireless sensing device 515 is induced by the capacitive sensing unit 605 to obtain a change in the magnetic field due to the intervention of the external object, and is converted by the controller 603 into a signal transmitted by the wireless communication unit 601 to provide a reference for starting the security mechanism.

In order to enable the system to operate correctly and reduce malfunctions, the system can be reset after the security mechanism is executed, as shown in Figure 7.

After the security mechanism is executed, in step S701, when the power is turned on, manually reset, or the operation time is up to a time, and when, the process of resetting the system is performed, including releasing static electricity on the saw blade, and returning to the preset reference value. (Step S703), and the capacitive or electrostatic sensing circuit is reset (step S705). It is worth mentioning that there is a delay between the steps of re-releasing the static electricity of the electrostatic sensor and resetting the capacitance of the capacitive sensor, so that the control circuit can judge whether the step is completed. The system can further reset the warning message (step S707), and must return the previously released carrier mechanism and the actuation device to the initial setting, the motor returns to the normal operation mode, and returns the system to the normal operation state (step S709).

In an implementation scenario, the user operates the tool machine proposed in the disclosure of the present invention, such as when pushing a poor conductor of wood toward the tool machine, since the material itself is not charged, it is not compatible with the capacitive sensing device. Inductive triggering occurs in the contact sensing element. The tool machine will operate normally. When the wood continues to enter into contact with the saw blade, the capacitive or electrostatic sensing element will not be triggered, so the motor can continue to operate normally. If the object such as a human finger enters the protection range formed by the above two sensing devices, the safety mechanism will be triggered, and the relevant sensing device sends a signal to the control circuit, in addition to controlling the motor to stop or reverse, and simultaneously driving The operation of the moving device releases the supporting mechanism, and the tool group can be lowered downward, so that the driving unit is effectively stopped in order to obtain time and space. In an embodiment, the system can simultaneously activate the alert system to emit a warning of sound or light, prompting the surrounding personnel to assist or process.

According to the flow embodiment of the method for operating the security system of the present invention shown in FIG. 8, when the capacitive sensing device or the electrostatic sensing device is applied, the system can set the trigger threshold between the malfunction and the safety protection. For example, in step S801, the capacitive sensor continuously senses the amount of change in the capacitance value by the change of the electromagnetic field, and determines whether the first threshold is reached in step S803. If the slight change does not reach the first threshold, the sensing step is continued; when the change has reached the first threshold, the security system is triggered, as in step S809. At the same time, in step S805, the system senses the electrical signal caused by the static electricity through the electrostatic sensing device, and determines whether the second threshold is reached according to step S807. If the second threshold has not been reached, the sensing step is continued; if the second threshold has been reached, indicating that the existing object contacts the saw blade, as in step S809, the security system is triggered. At the same time, under the safety setting, in step S811, the motor is caused to reverse the saw blade through the control circuit, and the above-mentioned several means for causing the motor to stop and the effect of triggering the actuation release related mechanism to be lowered are not excluded.

Therefore, the present invention relates to a technical means for a human body to touch a safety protection sensing device for a cutting tool. Through the safety system, the tool machine table and the operation method of the invention, the tool machine can provide a more complete safety protection solution. In particular, according to the multi-channel safety sensing program, the mechanism for effective safety protection is provided in conjunction with the mechanism for lowering the machine and stopping the motor.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

Claims (20)

 A safety system with a body protection and descending mechanism is applied to a machine tool table, which is provided with a tool set and a bearing mechanism for carrying the tool set, the tool set including a saw blade and driving the saw blade to operate A driving unit, wherein the safety system with a body protection and a lowering mechanism comprises: a first sensing device disposed in the tool machine for forming a detection range on the surface of the tool machine for detecting Detecting an object entering the detection range; a second sensing device is disposed on the tool set to form a protection range on the saw blade for detecting an object approaching or touching the saw blade; The driving device is disposed in the tool machine, and the bearing mechanism for carrying the tool group is fixed in the tool machine table; a control unit is electrically connected to the first sensing device, the second sensing device, the driving unit and The actuating device controls the actuating device to release the carrying mechanism according to the information that the first sensing device and/or the second sensing device detects the object, so that the tool set and the supporting mechanism Dropping to a specific position to gain time and space effectively causes the drive unit to stop functioning.    The safety system with a body protection and lowering mechanism according to claim 1, wherein the first sensing device is a non-contact sensing device disposed near the tool group.    The safety system with a body protection and a lowering mechanism according to claim 2, wherein the non-contact sensing device is a capacitive sensor based on a capacitive coupling principle.    The safety system with a human body protection and descending mechanism according to claim 3, wherein the safety system with the human body protection and descending mechanism comprises a plurality of the first sensing devices disposed at a plurality of positions on the table surface of the tool machine. .    The safety system with a body protection and lowering mechanism according to claim 1, wherein the second sensing device is a non-contact sensing device provided on the tool group.    The safety system with a body protection and a lowering mechanism according to claim 5, wherein the non-contact sensing device is a capacitive sensor based on a capacitive coupling principle.    The safety system with a body protection and a lowering mechanism according to claim 6, wherein the capacitive sensor is a wireless capacitance sensing device, disposed on the saw blade, and the capacitive sawing principle is formed on the saw blade. The scope of protection is connected to the control unit by means of wireless communication.    The safety system with a body protection and a lowering mechanism according to claim 1, wherein the second sensing device is an electrostatic sensing device provided on the tool group.    The safety system with a body protection and a lowering mechanism according to claim 8, wherein the electrostatic sensing device is disposed on a driving shaft of the saw blade to sense an object in a Darlington triggering manner.    The safety system with a human body protection and lowering mechanism according to claim 1, wherein the supporting mechanism is connected to the actuating device at one end, and the pivoting pivot is connected to the tool machine at the other end; The actuating device is controlled to release the carrying mechanism, and the carrying mechanism is inclined down to a specific position with the pivot as a rotating shaft.    The safety system with a human body protection and lowering mechanism according to claim 1, wherein the safety system with the human body protection and lowering mechanism comprises at least two actuation devices respectively fixing at least two ends of the bearing mechanism to the tool machine When the control unit controls the actuating device to release the carrying mechanism, the carrying mechanism is lowered in parallel to a specific position.    The security system with a body protection and a descending mechanism according to any one of claims 1 to 11, wherein when the first sensing device detects an object entering the detection range, a first trigger signal is generated. Or the second sensing device detects an object approaching or touching the saw blade to generate a second trigger signal, or the first sensing device and the second sensing device both detect an object and respectively generate the The first trigger signal and the second trigger signal, the control unit controls the actuating device to release the carrier mechanism and simultaneously stops the driving unit.    A tool machine having a safety system with a body protection and a lowering mechanism as claimed in claim 1, the tool machine being a cutting tool, a tool set, and a bearing mechanism carrying the tool set, The tool set includes a saw blade and a drive unit that drives the operation of the saw blade.    A method for operating a safety system with a body protection and descending mechanism is applied to a machine tool table, which is provided with a tool set and a bearing mechanism for carrying the tool set, the tool set including a saw blade and driving the saw a driving unit for operating the sheet; the tool machine comprises at least an actuating device for fixing the carrying mechanism in the tool machine, the actuating device fixing the carrying mechanism; the operating method comprises: first sensing The device detects an object entering a detection range, wherein the first sensing device is disposed in the tool machine to form the detection range on the surface of the tool machine; and the second sensing device detects the proximity Or an object that touches the saw blade, wherein the second sensing device is disposed on the tool set to form a protection range on the saw blade; and a control unit according to the first sensing device and/or The second sensing device detects the information of the object and controls the actuating device to release the carrying mechanism, so that the tool set and the supporting mechanism are lowered to a specific position to obtain time and space. Stop the drive unit.    The method for operating a security system with a body protection and a descending mechanism according to claim 14, wherein the first sensing device is a capacitive sensing device based on a capacitive coupling principle for sensing a capacitance within the detection range. The amount of change in value.    The method for operating a safety system with a body protection and a lowering mechanism according to claim 14, wherein the second sensing device is a capacitive sensing device based on a capacitive coupling principle disposed on the tool group.    The method for operating a security system with a body protection and a lowering mechanism according to claim 16, wherein the capacitive sensor is a wireless capacitance sensing device disposed on the saw blade and capacitively coupled to the saw blade. The principle forms the scope of protection and connects the control unit with a wireless communication means.    The method of operating a safety system with a body protection and a lowering mechanism according to claim 14, wherein the second sensing device is an electrostatic sensing device disposed on the tool set, the electrostatic sensing device is configured An object is sensed in a Darlington trigger on a drive shaft of the saw blade.    The method for operating a security system with a body protection and a descending mechanism according to any one of claims 14 to 18, wherein when the first sensing device detects an object entering the detection range, a first Triggering a signal, or the second sensing device detects an object approaching or touching the saw blade, generating a second trigger signal, or both the first sensing device and the second sensing device detect an object and The first trigger signal and the second trigger signal are respectively generated, and the control unit controls the actuating device to release the carrier mechanism while stopping the driving unit.    The method of operating a safety system with a body protection and a descending mechanism according to claim 14, wherein the control unit resets the body after completing the control of the actuating device to release the carrier mechanism and causing the drive unit to stop operating. A safety system for the protection and lowering mechanism includes: releasing static electricity on the saw blade; and resetting a capacitance value of the second sensing device.