CN115475682A - Disintegrating machine - Google Patents

Abstract

The present invention provides a pulverizer, including: a first detection unit for detecting that the pulverized material is fed into the hopper; and a second detecting portion for detecting an operation state of the crushing roller; and a determination unit configured to determine a clogging state of the pulverized material based on a first signal output from the first detection unit and a second signal output from the second detection unit, the second signal indicating that the pulverization roller is in an idle operation state while the pulverizer is in operation and the pulverized material is being fed into the hopper. The pulverizer of the present invention further includes: and a timer for counting the elapsed time after the first signal and the second signal are output, wherein when the elapsed time after the second signal is output reaches a set time and the second signal is continuously output, the determination unit determines that the crusher is in a crushed material clogging state, and the operation of the crushing roller can be stopped manually or automatically. According to the invention, the blockage phenomenon of the crushed objects can be found and timely treated without unnecessary labor force such as regular monitoring.

Description

grinder

technical field

The invention relates to a pulverizer, in particular to a pulverizer for pulverizing scraps of injection molding products.

Background technique

In the injection molding industry, a pulverizer for crushing scraps of injection molding products is often used, and the scraps of injection molding products after crushing are recycled as injection molding materials. Usually, the leftovers of injection molding products include sprue runner materials during injection molding and defective molded products (also known as crushed objects). They are slender and sometimes branch-shaped. When they enter the crushing box of the pulverizer through the hopper of the pulverizer, they are often overlapped in the pulverization box due to the excessive length of individual sprue runners or the criss-crossing of multiple sprue runners. The top of the body cannot enter the crushing box, thus causing the state of blockage of crushed objects.

In addition, in the prior art, in order to save energy consumption, the power to drive the crushing roller is reduced when the crushed material has not yet entered the crushing box of the crusher, so that the crushing roller is in an energy-saving state called idle running state , when it is detected that the pulverized material re-enters the pulverizer to block the pulverized material, the power to drive the pulverizing roller will automatically return to the state of normal pulverizing operation.

In actual operation, the pulverizers are often in the state of automatic operation. In order to save labor costs, it is also a system where one worker manages multiple pulverizers. Whether there is clogging of pulverized materials in multiple pulverizers is currently checked. Manually confirm and process each pulverizer at regular intervals. In this way, it will inevitably increase the unnecessary labor load caused by regular confirmation, and it will also affect the pulverization of the pulverizer due to the failure to detect or deal with the clogging phenomenon in time. The question of efficiency.

Therefore, those skilled in the art are committed to developing a pulverizer that can not only reduce unnecessary labor, but also detect or deal with clogging of pulverized objects in time.

Contents of the invention

In view of the problems in the prior art, the purpose of the present invention is to provide a pulverizer that can reduce unnecessary labor and detect or deal with clogging of pulverized objects in time.

A pulverizer provided by the present invention is provided with: a first detection part, which is used to detect that pulverized objects are put into the hopper; and a second detection part, which is used to detect the running state of the pulverization roller; During operation, and in the state that crushed objects are put into the hopper, according to the first signal output from the first detection part and the second signal output from the second detection part that the crushing roller is in the idle running state signal to judge the clogging state of the pulverized material.

Preferably, the pulverizer of the present invention is further equipped with: a timer, which counts the elapsed time after the output of the first signal and the second signal, and when the elapsed time after outputting the second signal reaches the set time When the time still continues to output the second signal, the judging unit judges that the shredder is in a state of clogging of shredded objects, and can stop the operation of the shredding roller manually or automatically.

More preferably, in the pulverizer of the present invention, if the output of the second signal has been interrupted when the elapsed time after the output of the second signal has not reached the set time, the determination unit determines that the pulverization The machine is in the state of restarting the crushing operation, and at the same time, the timer is reset to the elapsed time.

More preferably, the pulverizer of the present invention is further equipped with: a notification unit, which outputs a third signal that no pulverization is detected when the judging unit determines that the pulverizer is in a state of clogging, and the notification unit Simultaneously with the output of the third signal, notification is made.

More preferably, the pulverizer of the present invention has a number of notification counting unit for measuring the number of notifications of the notification unit. When the elapsed time counted by the timer reaches the set time, and when the notification When the notification is made by the unit, the judging unit judges whether the number of notifications measured by the number of notifications measurement unit reaches the set number of times. When the number of notification times reaches the set number of times, the pulverizer automatically stops the crushing rollers; When the number of times is fixed, after the notification unit makes a notification, the elapsed time counted by the timer is cleared, and the timer is restarted. The said number of notifications for is counted up once.

More preferably, in the pulverizer of the present invention, the judging unit judges that the pulverized objects are clogged, and when the output of the second signal is interrupted before the pulverizing roller is manually or automatically stopped, the judging unit The unit determines that the pulverizer is in the state of resuming the pulverization operation, and resets the elapsed time counted by the timer and the number of notification times measured by the notification number calculation unit.

More preferably, in the pulverizer of the present invention, the second signal is that when the driving current value or driving torque of the pulverizing roller is below a set value, the pulverizing roller is judged to be in a no-load state, so The second detection unit detects the no-load state as an idle state of the crushing roller and outputs a signal.

According to the invention, unnecessary labor can be reduced, and clogging of pulverized objects can be found or dealt with in time.

Description of drawings

Fig. 1 is the composition front schematic diagram of pulverizer involved in the present invention;

Fig. 2 is a three-dimensional schematic diagram of the composition of the pulverizer involved in the present invention;

Fig. 3 is a block diagram illustrating the operation of the pulverizer according to the embodiment of the present invention;

Fig. 4 is a block diagram illustrating the operation and operation of the pulverizer according to the modified embodiment of the present invention;

Fig. 5 is a block diagram illustrating the operation of the pulverizer according to the modified embodiment of the present invention.

detailed description

Hereinafter, the pulverizer according to the present invention and its operation will be described in detail with reference to the drawings.

The pulverizer 10 of the present invention, as a pulverizer for pulverizing leftovers (also called objects to be pulverized) of injection molding products, as shown in Figures 1 and 2, has a hopper 11 and a pulverizing box 12 located below the hopper . Wherein, the hopper 11 is used for putting in crushed objects (not shown), and the main function of the crushing box 12 is to form a crushing working chamber for crushing the crushed objects. As shown in FIG. 2 , a crushing roller 13 is installed in the crushing box 12 , and the crushing roller 13 is driven to rotate by a driving motor 14 , and a crushing blade 15 is mounted and fixed on the crushing roller 13 .

As shown in FIG. 1 , the pulverizer 10 of this embodiment is also equipped with a feeding detection sensor 21 as a first detection part. When pulverized objects are thrown into the hopper 11, the pulverized object input signal L1 is output as the first signal; otherwise, when the feeding detection sensor 21 does not detect that pulverized objects are thrown into the hopper 11, the pulverized object input signal L1 is not output.

In addition, the pulverizer 10 of the present embodiment is further provided with an operation detection sensor (not shown) as a second detection unit, and the operation detection sensor is used to detect the operation state of the pulverization roller 13. When the roller 13 is in the idle running state, it outputs the idle running signal L2 as the second signal, otherwise, when the running detection sensor detects that the crushing roller 13 is in the non-idle running state (that is, the crushing working state), it does not output the idle running signal L2. Running signal L2. In this embodiment, the idle running signal L2 is when the driving current value or driving torque of the crushing roller 13 is below a set value, the crushing roller 13 is determined to be in a no-load state, and the operation detection sensor This no-load state is detected as an idle operation state of the crushing roller 13 and is output as a signal.

In addition, the pulverizer 10 of this embodiment is controlled by a central controller K (not shown), and the central controller K is equipped with a determination unit G (not shown), which is in the operation of the pulverizer, and in the hopper 11 In the state where crushed objects are fed, the clogged state of crushed objects is determined based on the crushed objects input signal L1 output from the feeding detection sensor 21 and the idle running signal L2 output from the operation detection sensor.

In addition, the pulverizer 10 of this embodiment is further equipped with a timer T (not shown), and when the central controller K receives the pulverized material input signal L1 and the idle operation signal L2, it starts the timer T timing.

Hereinafter, the operation of the pulverizer 10 according to the present embodiment will be described with reference to FIG. 3 .

As shown in FIG. 3 , after the operation of the pulverizer 10 is started, the pulverization roller 13 is started to run (step S101 ), and the operation state detection sensor of the pulverization roller 13 starts to detect. Then put crushed objects into the hopper 11 (step S102 ). At this time, when the feeding detection sensor 21 detects that crushed objects are thrown into the hopper 11 , a signal L1 for crushed objects input is output (step S103 ). After the pulverized material input signal L1 is output, when the pulverizing roller 13 is in the idling operation state, the idling operation signal L2 is output (step S104 ). When the central controller K receives the idle running signal L2, it starts the timer T to start timing (step S105).

Then, the determination unit G determines whether the idling operation signal L2 is continuously input (step S106), and when the determination unit G determines that the idling operation signal L2 is continuously input (Yes in step S106), the The determination unit G checks whether the time counted by the timer T (that is, the elapsed time from the start of counting to the determination) reaches the set time t1 pre-stored in the central controller K (step S107). In the embodiment, for example, the set time t1 can be set as any time between 10 seconds and 60 seconds, and of course it is not limited thereto, for example, it can also be set as several seconds, or a time longer than 60 seconds. When the judging unit G judges that the timer has reached the set time t1 (Yes in step S107), the judging unit G judges that the pulverized objects are clogged (step S108), so the central controller K controls the pulverization The roller 13 is allowed to stop automatically (step S109).

On the other hand, when the determination unit G determines that the idling operation signal L2 is not continuously input (No in step S106), the determination unit G determines that the crushing operation is restarted (step S110), and then the central controller K resets the timer T to zero (step S111 ), and then continues to put crushed objects into the hopper 11 (return to step S102 ).

In addition, in the above step S107, when the judging unit G judges that the timer has not reached the set time t1 (No in step S107), the judging unit G does not judge that the pulverized objects are clogged, so the central The controller K allows the determination unit G to continue to determine whether the idle running signal L2 is continuously input (that is, return to step S106), that is, before the determination unit G determines that the timer counts up to the set time t1, The determination unit G will repeat step S106 and step S107.

This embodiment has the following advantages,

1. In this embodiment, the feeding detection sensor 21, the operation detection sensor and the judging unit G are provided, and when the pulverizer is in operation, and there is pulverized material being thrown into the hopper 11, the judging unit G can be based on the input from the feeding. Detect the pulverized material input signal L1 output by the sensor 21 and the idle running signal L2 output from the operation detection sensor to determine the clogged state of the pulverized material;

2. The pulverizer 10 of the present embodiment is also equipped with a timer T, which is additionally set during the operation of the pulverizing roller 13, when the feeding detection sensor 21 detects that pulverized material is thrown into the hopper 11 and outputs the pulverized material input signal L1. At the same time, when the operation detection sensor detects that the pulverizing roller 13 is in an idle operation state and outputs an idle operation signal L2, that is, when the central controller K receives the pulverized material input signal L1 and the idle operation signal L2 , the timer T is started to start counting, and before the determination unit G determines that the timer counts up to the set time t1, the determination unit G will repeatedly determine whether the idling operation signal L2 continues to be input. , and when the determination unit G determines that the idle operation signal L2 is not continuously input (No in step S106), the determination unit G determines that the crushing operation is restarted (step S110), and then continues to put into the hopper 11 Pulverized matter (that is, return to step S102). In this way, when the pulverizer stops due to blockage of pulverized objects, if within the set time t1, the friction between the pulverized objects or its own vibration can be automatically eliminated, the pulverizer will continue to pulverize. In this way, the pulverizer will not be stopped due to temporary blockage and the crushing efficiency will be reduced, nor will relevant personnel (such as on-site operators) just approach the pulverizer to deal with the clogged state, and the clogging will automatically eliminate such a waste of operating time.

In addition, the following changes can also be made in this embodiment,

In this embodiment, when the judging unit G judges that the crushed objects are clogged (step S108 ), the central controller K controls the crushing roller 13 to stop automatically (step S109 ). However, in this embodiment, a notification unit M (not shown) may also be provided, and the notification unit M may be set so that when the judging unit G judges that the pulverizer 10 is in a clogged state of pulverized objects, it outputs a first message that no pulverization is detected. Three signals, the notification unit M notifies while outputting the signal that the pulverization has not been detected, that is to say, the operation of the pulverizer 10 can be changed as shown in FIG. 4 .

Specifically, steps S201 to S208 in FIG. 4 are exactly the same as steps S101 to S108 in FIG. 3 , and step S213 is the same as step S110, and step S214 is the same as step S111. Different steps in the latter embodiments will be described below.

When the judging unit G judges that the pulverized objects are clogged (step S208), it outputs a non-detected pulverized signal (step S209), and at the same time, the notification unit M, for example, displays on the display or emits a sound or lights up an indicator light, etc. According to the actual situation, the relevant personnel (such as on-site operators) who receive the notification choose to manually stop the operation of the crushing roller 13 (step S211), or choose not to stop the operation of the crushing roller 13, but The counting of the timer T is reset (step S212), and the operation of the shredder 10 is returned to before step S205. Therefore, notifications can be issued again due to timeouts.

With this method, relevant personnel (on-site operators) can notice abnormalities of the pulverizer even if they do not monitor regularly, and respond as soon as possible. Therefore, it is possible to prevent the problem of poor crushing efficiency caused by long-term clogging of materials in the grinder. In addition, even if the relevant personnel (on-site operators) cannot respond immediately, they will receive repeated notifications, which can further avoid the problem of long-term blockage of materials in the pulverizer.

On the other hand, on the basis of the modified embodiment, the embodiment can also be modified as follows,

Specifically, this embodiment may also be equipped with a notification counting unit P (not shown), which is used to measure the notification count of the notification unit M. When the elapsed time counted by the timer T reaches the set fixed time t1, and when the notification unit M makes a notification, the determination unit G judges whether the number of notifications measured by the notification times calculation unit P reaches the set number of times P1, when the determination When the unit G determines that the number of notifications calculated by the number of notifications calculation unit P has reached the set number of times P1, the pulverizer 10 automatically stops the pulverizing roller 13. On the other hand, when the determination unit G When it is determined that the number of notifications calculated by the number of notifications calculation unit P has not reached the set number P1, after the notification unit M makes a notification, the elapsed time counted by the timer T is cleared. zero, and let the timer T start counting again, and at the same time, let the number of notifications measured by the number of notifications calculation unit P be added once. That is, the operation of the pulverizer 10 can be changed as shown in FIG. 5 .

Specifically, steps S301 to S309 in FIG. 5 are exactly the same as steps S201 to S209 in FIG. 4, and step S312 is the same as step S213, and step S313 is the same as step S214. The different steps in the following embodiments are described below,

When the reporting unit M outputs a signal that no crushing is detected (step S309), the determining unit G determines whether the number of notifications calculated by the number of notifications measuring unit P reaches the set number of times P1 (step S309). S310 ), the set number of times P1 can be preset as, for example, 2 to 5 times, and of course can also be set to 6 times or more according to the situation. When the determination unit G determines that the number of notifications calculated by the number of notifications calculation unit P has reached the set number of times P1 (that is, Yes in step S310), then the central controller K controls the crushing roller 13 , let it stop automatically (step S311). On the other hand, when the determination unit G determines that the number of notification times calculated by the number of notification calculation unit P has not reached the set number P1, the notification unit M, for example, displays on the display or makes a sound or Notifications are made by means of turning off the indicator light (step S315), and the relevant personnel (such as on-site operators) who receive the notification can manually stop the operation of the crushing roller 13 and remove the blockage.

In addition, at the same time of notification, the timer T is reset to zero (step S212 ), the number of notifications is added once, and then the operation of the shredder 10 is returned to before step S205 . Then, the timer T can send a notification again due to overtime, and when the number of notifications reaches the set number of times, the shredder 10 will automatically stop.

With this method, when the relevant personnel (on-site operators) cannot respond in time, by automatically stopping the pulverizer, energy waste caused by long-term blockage of materials in the pulverizer can be prevented.

In addition, the following modification (not shown) can also be made in the embodiment, that is, the judging unit G judges that the pulverized objects are clogged, and before the pulverizing roller 13 is manually or automatically stopped, the output of the idle running signal L2 In the case of being interrupted, the determination unit G determines that the pulverizer 10 is in the state of restarting the pulverization operation, and calculates the elapsed time calculated by the timer T and the notification count calculation unit P. The said number of notifications will be cleared. This can also achieve the same effect.

In addition, in this embodiment, the following changes can be made (not shown in the figure). The feeding detection sensor 21 is not limited to be installed at the feeding hopper, and the signal sent by the molding machine, material rod or defective product feeding device can also be fed as pulverized objects. Signal L1. That is, the motion detection part of the molding machine or the feeding device can be used as a feeding detection sensor.

In the description, the gist of the invention of the present invention is described in detail, but the description only exemplifies some preferred implementations of the present invention, and the implementation of the present invention is not limited to the content of the description. In the case of the design purpose of the present invention, the addition, reduction, and simple replacement of its related components and/or structures and operating steps should fall within the protection scope of the present invention.

Claims (10)

1. A crusher is characterized by comprising:

a first detection unit for detecting that a pulverized material is fed into the hopper; and

a second detection unit for detecting an operation state of the crushing roller; and

and a determination unit configured to determine a clogging state of the pulverized material based on a first signal output from the first detection unit and a second signal output from the second detection unit, the second signal indicating that the pulverization roller is in an idle operation state while the pulverizer is in operation and the pulverized material is being fed into the hopper.

2. The crusher according to claim 1, further comprising:

a timer that counts elapsed time after the first signal and the second signal are output,

when the time elapsed after the second signal is output reaches a set time and the second signal is continuously output, the determination unit determines that the crusher is in a crushed material clogging state, and may manually or automatically stop the operation of the crushing roller.

3. The pulverizer of claim 2,

when the output of the second signal has been interrupted when the elapsed time after the output of the second signal has not reached the set time, the determination unit determines that the crusher is in a state in which the crushing operation is resumed, and clears the count of the elapsed time by the timer.

4. The pulverizer according to claim 2, further comprising:

a notification unit that outputs a third signal indicating that pulverization is not detected when the determination unit determines that the pulverizer is in the pulverized material clogging state,

the notifying unit notifies the user while outputting the third signal.

5. The crusher according to claim 3, further comprising:

a notification unit that outputs a third signal indicating that pulverization is not detected when the determination unit determines that the pulverizer is in the pulverized material clogging state,

the notifying unit notifies the user while outputting the third signal.

6. The pulverizer of claim 4,

a notification number measuring unit for measuring the number of notifications from the notification unit,

the determination unit determines whether the number of times of notification measured by the number of times of notification measurement unit reaches a set number of times when the elapsed time counted by the timer reaches a set time and when the notification unit performs notification,

when the judging unit judges that the number of times of notification measured by the number of times of notification measuring unit reaches a set number of times, the crusher automatically stops the crushing roller,

on the other hand, when the determination unit determines that the number of times of notification measured by the number of times of notification measurement unit has not reached a set number of times, after the notification unit performs the notification, the determination unit clears the elapsed time measured by the timer and restarts the counting of the timer, and the number of times of notification measured by the number of times of notification measurement unit is added once.

7. The pulverizer of claim 5,

a number-of-notification-times measuring unit that measures the number of notification times by the notifying unit,

the determination unit determines whether the number of times of notification measured by the number of times of notification measurement unit reaches a set number of times when the elapsed time measured by the timer reaches a set time and when the notification unit performs notification,

when the judging unit judges that the number of times of notification measured by the number of times of notification measuring unit reaches a set number of times, the crusher automatically stops the crushing roller,

on the other hand, when the determination unit determines that the number of times of notification measured by the number of times of notification measurement unit has not reached a set number of times, after the notification unit performs the notification, the determination unit clears the elapsed time measured by the timer and restarts the counting of the timer, and the number of times of notification measured by the number of times of notification measurement unit is added once.

8. The pulverizer of claim 6,

the determination unit determines that the crusher is in a crushed material clogging state, and if the output of the second signal is interrupted before the crushing roller is stopped manually or automatically, the determination unit determines that the crusher is in a state in which the crushing operation is restarted, and clears the elapsed time counted by the timer and the number of times of notification counted by the number of times of notification counting unit.

9. The pulverizer of claim 7,

the determination unit determines that the crushing roller is in a crushed material clogging state, and if the output of the second signal is interrupted before the crushing roller is stopped manually or automatically, the determination unit determines that the crusher is in a state in which the crushing operation is resumed, and clears the elapsed time counted by the timer and the number of times of notification counted by the number of times of notification counting unit.

10. The pulverizer of any one of claims 1 to 9,

the second signal is a signal which is determined to be in a no-load state when the driving current value or the driving torque of the crushing roller is equal to or less than a set value, and the second detection unit detects and outputs the no-load state as an idle operation state of the crushing roller.

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