Cutter cooling device and cigarette cutting system

Abstract

The utility model provides a cutter cooling device and a cigarette cutting system. The cutter cooling device comprises an air source configured to provide compressed air; the refrigerating assembly comprises a vortex tube and a hot end adjusting mechanism, the vortex tube comprises an inlet nozzle, a cold port and a hot port, and the vortex tube receives compressed air from an air source through the inlet nozzle, outputs low-temperature cooling airflow through the cold port and outputs high-temperature hot airflow through the hot port; the hot end adjusting mechanism changes the flow of the hot airflow output by the hot port so as to change the temperature and flow of the cooling airflow output by the cold port. The cooling die head is communicated with the cold port to receive the cooling air flow, comprises a nozzle arranged opposite to the surface of the cutter, and is configured to spray the cooling air flow to the surface of the cutter; the temperature measuring element detects the working temperature of the surface of the cutter; and the temperature controller is in signal connection with the temperature measuring element and the hot end adjusting mechanism and controls the hot end adjusting mechanism to change the flow of the hot air flow output by the hot port according to the working temperature.

Description

Technical Field

[0001] The present disclosure relates to tobacco machinery, and in particular to a cutter cooling device and a cigarette cutting system. Background Art

[0002] In the industrial cutting process, long-term cutting can easily cause the workpiece to overheat. The workpiece is easy to soften under high temperature, resulting in thermal fatigue damage, which intensifies tool wear, resulting in the product being cut not being cut in place, the left and right sections being different, and other unstable cutting situations, which will have an adverse effect on the product's processing quality, processing efficiency, etc. In addition, excessive tool temperature will cause the material of the product being cut to change, thus affecting product quality.

[0003] For example, in tobacco manufacturing, double-length cigarettes are typically cut by blades in a tipping machine. Figure 8 and Fig. 9 The figure shows a partial structural schematic diagram of a receiving and loading machine of the related art. The receiving and loading machine includes a slitting wheel 1', a guide rail 2', a circular cutter 3', a grinding wheel 4', a receiving and loading machine motor 5', a driving wheel 6', a V-belt 7', a driven wheel 8', a left clamping plate 9', and a right clamping plate 10'. The slitting wheel 1' includes an inner drum body 12' and an outer drum body 13'. The inner drum body 12' and the outer drum body 13' are connected by a connecting key and constitute the slitting wheel drum of the slitting wheel 1'. The double-length filter cigarette 11' is pasted with kraft paper through the slitting wheel 1', and then the position of the double-length cigarette is adjusted by the guide rail 2', and finally cut on the slitting wheel drum. The circular cutter 3' is clamped between the left clamping plate 9' and the right clamping plate 10'. The motor 5' drives the driving wheel 6' to rotate, and then drives the driven wheel 8' to rotate synchronously through the V-belt 7', thereby driving the left and right clamping plates 9' and 10' to clamp the circular cutter 3' to rotate, and the double-length filter cigarettes 11' placed on the slitting wheel drum are finally cut by the circular cutter 3'. The grinding wheel 4' grinds the circular cutter 3' during its rotation.

[0004] The high-speed rotating circular cutter 3' of the connecting machine rubs against the double-length filter cigarette 11' when cutting, and generates heat, causing the tipping paper connecting glue, filter rod hot melt glue, plasticizer, etc. at the filter rod of the cigarette to melt and accumulate glue, thereby causing problems such as wire drawing or staining of the filter rod cut, affecting the production quality of the cigarette filter. In addition, the frictional heat generated by the circular cutter will cause the cutting groove of the cutting drum to be filled with glue scale, which requires maintenance personnel to stop the machine regularly for cleaning, resulting in increased labor costs and reduced production efficiency. Utility Model Content

[0005] The purpose of the present disclosure is to provide a tool cooling device and a cigarette cutting system, aiming to solve the problem that the tool temperature is too high during the cutting process, which affects the processing quality and processing efficiency of the product.

[0006] A first aspect of the present disclosure provides a tool cooling device, comprising: an air source, configured to provide compressed air; a refrigeration component, comprising a vortex tube and a hot end regulating mechanism, the vortex tube comprising an inlet nozzle, a cold port and a hot port, the vortex tube receiving the compressed air from the air source through the inlet nozzle and outputting a low-temperature cooling airflow through the cold port, and outputting a high-temperature hot airflow through the hot port, the hot end regulating mechanism changing the temperature and flow rate of the cooling airflow output from the cold port by changing the flow rate of the hot airflow output from the hot port; a cooling die head, connected to the cold port of the vortex tube to receive the cooling airflow, comprising a nozzle, the nozzle being configured to be arranged opposite to a tool surface of a tool to spray the cooling airflow toward the tool surface; a temperature measuring element, configured to detect the working temperature of the tool surface; and a temperature controller, connected to the temperature measuring element and the hot end regulating mechanism of the refrigeration component by signal, configured to control the hot end regulating mechanism to change the flow rate of the hot airflow output from the hot port according to the working temperature.

[0007] In some embodiments of the tool cooling device, the refrigeration component extends along a first direction; the hot end regulating mechanism includes a regulating valve and a driving device, one end of the regulating valve is arranged opposite to the hot port along the first direction, the driving device is connected to the regulating valve driving and is connected to the temperature controller signal, and is configured to drive the regulating valve to move along the first direction to away from or approach the hot port according to the working temperature, so that the gap between the regulating valve and the hot port is expanded or reduced to change the flow rate of the hot air flow output by the hot port.

[0008] In some embodiments of the tool cooling device, the hot end adjustment mechanism includes a shell, the shell has a slide groove, the slide groove extends along the first direction, the regulating valve has a surface that slides with the slide groove, and the driving device drives the regulating valve to slide in the slide groove so that the regulating valve moves away from or approaches the hot end.

[0009] In some embodiments of the tool cooling device, the driving device includes: a driving rod, one end of which is threadedly connected to the regulating valve to convert the rotary motion between the driving rod and the regulating valve into a linear motion of the regulating valve along the first direction; and

[0010] The motor is drivingly connected to the end of the driving rod facing away from the regulating valve, and is signal-connected to the temperature controller. The temperature controller adjusts the rotation direction of the motor according to the working temperature so that the motor drives the driving rod to change the rotation direction, thereby causing the regulating valve to face away from or approach the hot port.

[0011] In some embodiments of the tool cooling device, the cooling die head further comprises at least one air flow channel, and the air flow channel is connected to a plurality of nozzles and the cold port of the vortex tube.

[0012] In some embodiments of the tool cooling device, the cooling die head includes a fan-shaped body, the air flow channel and the nozzle are arranged on the fan-shaped body, the air flow channel extends radially along the fan-shaped body, a plurality of the air flow channels are arranged at intervals along the circumferential direction of the fan-shaped body, and a plurality of nozzles corresponding to each of the air flow channels are arranged at intervals from each other along the extension direction of the air flow channel.

[0013] In some embodiments of the tool cooling device, the tool cooling device comprises: two cooling dies configured to be disposed opposite to each other on both sides of the tool, the cooling dies comprising an air flow groove, the air flow groove being in communication with the air flow channel; and

[0014] The connecting part is arranged between the two cooling dies and includes an airflow cavity and a connecting part through hole. The two ends of the airflow cavity are respectively arranged opposite to the airflow grooves of the two cooling dies and are connected with the airflow grooves. The two ends of the connecting part through hole are respectively connected with the airflow cavity and the cold port of the vortex tube.

[0015] Based on the tool cooling device provided by the present invention, a vortex tube of a refrigeration component is arranged to receive compressed air output by an air source, and according to the working temperature of the tool detected by a temperature measuring element, such as a temperature sensor, the hot end regulating mechanism of the refrigeration component is controlled to change the flow rate of the hot air flow output by the hot port to change the temperature and flow rate of the cooling air flow output by the cold port, thereby controlling the temperature and flow rate of the cooling air flow sprayed by the cooling die head to the tool surface, which is beneficial to controlling the surface temperature of the tool during processing and production, avoiding excessive working temperature of the tool due to heat generated by surface friction, thereby avoiding affecting the processing quality and processing efficiency of the product.

[0016] A second aspect of the present disclosure provides a cigarette cutting system, comprising the cutter cooling device provided in the first aspect of the present disclosure, wherein the cutter is a circular cutter for cutting cigarettes.

[0017] Based on the cigarette cutting system provided by the present invention, the tool cooling device of the present invention is used to control the working temperature of the circular cutter used to cut cigarettes. It has the advantages of the tool cooling device of the present invention, and is also beneficial for avoiding the accumulation of glue scale on both sides of the circular cutter, thereby avoiding problems such as wiredrawing or staining of the cut of the cigarette filter rod.

[0018] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0020] Figure 1 It is a structural schematic diagram of a tool cooling device according to an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 A schematic diagram of a portion of the structure of a refrigeration assembly of a tool cooling device shown, wherein a vortex tube and a portion of a hot end adjustment mechanism are shown;

[0022] Figure 3 for Figure 1 A partial structural schematic diagram of a refrigeration assembly of a tool cooling device shown, which shows a portion of a vortex tube and a hot end adjustment mechanism;

[0023] Figure 4 for Figure 3 A side view of the regulating valve of the hot end regulating mechanism shown, showing the slide;

[0024] Figure 5 for Figure 1 A schematic diagram of the structure of the cooling die head of the tool cooling device shown;

[0025] Figure 6 for Figure 1 The schematic cross-sectional structure diagram of two cooling dies and a connecting portion of the tool cooling device shown;

[0026] Figure 7 for Figure 1 A schematic structural diagram of the connecting portion of the tool cooling device shown;

[0027] Figure 8 A schematic diagram of a part of the structure of a loader in the related art;

[0028] Fig. 9 for Figure 8 A schematic structural diagram of a partial structure of the loader is shown.

[0029] Figure 1-Figure 9 In the figure, each reference numeral represents:

[0030] 1', slitting wheel; 2', guide rail; 3', circular cutter; 4', grinding wheel; 5', motor for connecting machine; 6', driving wheel; 7', V-belt; 8', driven wheel; 9', left clamping plate; 10', right clamping plate; 11', double-length filter cigarette; 12', inner drum body; 13', outer drum body; 1, cooling die head; 1A, fan ring body; 1B, mounting part; 12, nozzle; 13, air flow channel; 14, air flow groove; 15, sealing member; 11, connecting part; 11a, air flow cavity; 11b, connecting part through hole; 2, refrigeration component; 241, inlet nozzle ; 41, outer cavity; 42, middle cavity; 421, annular flange; 24a, hot port; 24b, cold port; 26, hot end adjustment mechanism; 261, regulating valve; 611, valve head; 612, valve body; 121, slide; 613, valve stem; 262, driving device; 621, driving rod, 622, motor; 263, housing; 263a, slide; 63a, exhaust hole; 31, temperature measuring element; 32, temperature controller; 261, regulating valve; 63a, exhaust hole; 7, air source; 8, bracket; 9, solenoid valve; 10, tool; A, first direction. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0032] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0034] In the description of the present disclosure, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, upright, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0035] In the following description, the term "left" refers to the side of the refrigeration component close to the cold port, corresponding to Figures 1 to 3 The left side in "right" refers to the side opposite to "left", corresponding to Figures 1 to 3 on the right side of the screen.

[0036] The embodiment of the present disclosure provides a tool cooling device. The tool cooling device includes an air source 7, a refrigeration assembly 2, a cooling die head 1, a temperature measuring element 31 and a temperature controller 32. The air source 7 is configured to provide compressed air. The refrigeration assembly 2 includes a vortex tube 24 and a hot end regulating mechanism 26. The vortex tube 24 includes an inlet nozzle 241, a cold port 24b and a hot port 24a. The vortex tube 24 receives compressed air from the air source 7 through the inlet nozzle 241 and outputs a low-temperature cooling airflow through the cold port 24b, and outputs a high-temperature hot airflow through the hot port 24a. The hot end regulating mechanism 26 changes the temperature and flow rate of the cooling airflow output from the cold port 24b by changing the flow rate of the hot airflow output from the hot port 24a. The cooling die head 1 is connected to the cold port 24b of the vortex tube 24 to receive the cooling airflow. The cooling die head 1 includes a nozzle 12, which is configured to be arranged opposite to the tool surface of the tool 10 to spray the cooling airflow to the tool surface of the tool 10. The temperature measuring element 31 is configured to detect the working temperature of the tool surface. The temperature controller 32 is connected to the temperature measuring element 31 and the hot end regulating mechanism 26 of the refrigeration assembly 2, and is configured to control the hot end regulating mechanism 26 to change the flow rate of the hot air flow output by the hot port 24a according to the working temperature.

[0037] The cooling die head 1 can be a plate-shaped structure arranged opposite to the tool surface of the tool 10, and the surface of the plate-shaped structure opposite to the tool surface can be a fan ring, a triangle, a square, a circle or any other closed figure. A plurality of nozzles 12 can be provided, and each nozzle 12 can be arranged according to the shape of the surface of the cooling die head 1 opposite to the tool surface. For example, the cooling die head 1 is a fan ring, and the nozzles 12 can be arranged at intervals on the circumference of multiple different radii of the fan ring. The cooling die head 1 can be mounted on the bracket 8. In addition, the cold port 24b of the vortex tube 24 and the cooling die head 1 can be connected by a structure having a through hole such as an air pipe.

[0038] In some embodiments, the temperature controller 32 described above can be implemented as a general processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components or any appropriate combination thereof for performing the functions described in the present disclosure.

[0039] The vortex tube 24 of the refrigeration component 2 is arranged to receive the compressed air output by the air source 7, and according to the working temperature of the tool detected by the temperature measuring element 31, the temperature sensor 32 controls the hot end adjustment mechanism 26 of the refrigeration component 2 to change the flow rate of the hot air flow output by the hot port 24a to change the temperature and flow rate of the cooling air flow from the cold port 24b, thereby controlling the temperature and flow rate of the cooling air flow sprayed by the cooling die 1 to the surface of the tool, which is beneficial to controlling the surface temperature of the tool during processing and production, avoiding the tool from generating heat due to surface friction and causing the working temperature to be too high, thereby helping to avoid affecting the processing quality and processing efficiency of the product.

[0040] In some embodiments, the refrigeration assembly 2 extends along the first direction A. The hot end regulating mechanism 26 includes a regulating valve 261 and a driving device 262. One end of the regulating valve 261 is arranged opposite to the hot port 24a along the first direction A. The driving device 262 is drivingly connected to the regulating valve 261 and is signal-connected to the temperature controller 32, and is configured to drive the regulating valve 261 to move along the first direction A to deviate from or approach the hot port 24a according to the working temperature detected by the temperature measuring element 31, so that the gap between the regulating valve 261 and the hot port 24a is expanded or reduced to change the flow rate of the hot air flow output by the hot port 24a.

[0041] like Figure 2 and Figure 3 In the illustrated embodiment, the first direction A corresponds to the left-right direction. The regulating valve 261 may have a head in contact with the hot port 24a, and the radial dimension of the cross section of the head perpendicular to the first direction A gradually increases from close to the hot port 24a to away from the hot port 24a, and the radial dimension at the end close to the hot port 24a is smaller than the radial dimension of the hot port 24a, and the radial dimension at the end away from the hot port 24a is larger than the radial dimension of the hot port 24a, so that when the regulating valve 261 approaches the hot port 24a along the first direction A, the gap between the regulating valve 261 and the hot port 24a gradually decreases, and when the regulating valve 261 moves away from the hot port 24a along the first direction A, the gap between the regulating valve 261 and the hot port 24a gradually increases, thereby adjusting the flow rate of the hot air flow to decrease or increase, so that the temperature and flow rate of the cooling air flow change.

[0042] One end of the regulating valve 261 is arranged to be opposite to the hot port 24a along the first direction A, and a driving device 262 is arranged to make the temperature controller 32 drive the regulating valve 261 to move along the first direction A to deviate from or approach the hot port 24a according to the working temperature detected by the temperature measuring element 31, which is conducive to timely adjusting the temperature and flow of the cooling air flow according to the working condition of the tool 10. In addition, when the temperature of the tool surface is low, the temperature of the cooling air flow can be appropriately increased to reduce the output of the hot air flow. The provision of the temperature measuring element 31 and the temperature controller 32 is conducive to realizing the automatic control of the tool cooling device, reducing the manual detection and maintenance process, and improving production efficiency.

[0043] In some embodiments, the hot end regulating mechanism 26 includes a housing 263. The housing 263 has a slide groove 263a, and the slide groove 263a extends along the first direction A. The regulating valve 261 has a surface that slides with the slide groove 263a. The driving device 262 drives the regulating valve 261 to slide in the slide groove 263a, so that the regulating valve 261 moves away from or approaches the hot end 24a. Figure 4 As shown, the housing 263 is fixedly arranged at the right end of the vortex tube 24, and the surface of the valve body 612 of the regulating valve 261 has a strip-shaped protruding slide 121 extending along the first direction A and slidingly cooperating with the slide groove 263a. The slide 121 cooperates with the slide groove 263a so that the housing 263 can only translate relative to the vortex tube 24 but cannot rotate.

[0044] The structure of the arrangement is simple and is conducive to improving space utilization. The arrangement of the sliding fit structure is conducive to the stable movement of the regulating valve 261 along the first direction A, thereby facilitating the stable control of the temperature of the cooling airflow, and avoiding the reduction of the plasticity and toughness of the tool 10 due to repeated changes in the temperature field, thereby affecting the cutting.

[0045] In some embodiments, the driving device 262 includes a driving rod 621 and a motor 622. One end of the driving rod 621 is threadedly connected to the regulating valve 261 to convert the rotary motion between the driving rod 621 and the regulating valve 261 into a linear motion of the regulating valve 261 along the first direction A. Figure 1-Figure 3 As shown, the end of the driving rod 621 close to the hot port 24a along the first direction A is provided with a thread, and the regulating valve 261 has a threaded hole at the end away from the hot port 24a that is threadedly matched with the driving rod 621. The motor 622 is drivingly connected to the end of the driving rod 621 away from the regulating valve 261, and is signal-connected to the temperature controller 32. The temperature controller 32 adjusts the rotation direction of the motor 622 according to the working temperature, so that the motor 622 drives the driving rod 621 to change the rotation direction, thereby making the regulating valve 261 away from or close to the hot port 24a.

[0046] The arrangement is simple, reliable and easy to implement. By adjusting the rotation direction of the motor, the regulating valve 261 can be moved away from or close to the hot port 24a, and the rotation speed of the motor 622 is easy to control, which is conducive to achieving the effect of quickly adjusting the surface temperature of the tool by controlling the rotation speed of the motor 622. Controlling the motor to rotate at a constant speed is conducive to achieving the uniform movement of the regulating valve 261, so that the cooling air flow is output stably and the temperature of the cooling air flow changes evenly. In addition, the energy consumption required to form a relatively movable structure by threading the driving rod 621 and the regulating valve 261 is low, and setting the motor 622 as a power source is efficient and energy-saving.

[0047] In some embodiments, the cooling die head 1 further comprises at least one air flow channel 13, which is in communication with the plurality of nozzles 12 and the cold port 24b of the vortex tube 24. The cooling air flow is ejected from the nozzles 12 through the air flow channel 13.

[0048] The provision of the airflow channel 13 is conducive to the provision of multiple nozzles 12, thereby increasing the cooling range of the cooling airflow. In addition, the use of the same airflow channel 13 to connect multiple nozzles 12 and the cold port 24b is conducive to simplifying the parts processing procedure and reducing costs.

[0049] In some embodiments, the cooling die head 1 includes a fan-shaped body, and the air flow channel 13 and the nozzle 12 are arranged on the fan-shaped body. The air flow channel 13 extends radially along the fan-shaped body, and a plurality of air flow channels 13 are arranged at intervals along the circumferential direction of the fan-shaped body, and a plurality of nozzles 12 corresponding to each air flow channel 13 are arranged at intervals from each other along the extension direction of the air flow channel 13.

[0050] This arrangement is conducive to expanding the number of nozzles 12 and increasing the spray area of ​​the cooling airflow. In addition, for a fan-shaped or circular tool 10, this arrangement is conducive to uniform cooling in accordance with the shape of the tool surface, thereby improving cooling efficiency.

[0051] In some embodiments, the tool cooling device includes two cooling dies 1 and a connecting portion 11. The two cooling dies 1 are configured to be disposed on both sides of the tool 10 and opposite to each other. The cooling die 1 includes an airflow groove 14, which is connected to the airflow channel 13. The connecting portion 11 is disposed between the two cooling dies 1, and includes an airflow cavity 11a and a connecting portion through hole 11b. The two ends of the airflow cavity 11a are respectively disposed opposite to the airflow grooves 14 of the two cooling dies 1, and are connected to the airflow grooves 14. The two ends of the connecting portion through hole 11b are respectively connected to the airflow cavity 11a and the cold port 24b of the vortex tube 24. For example, as Figure 6 As shown, the airflow groove 14 can be set as a groove that is connected to multiple airflow channels 13 at the same time, and the airflow cavity 11a can be set to have a cross-sectional shape consistent with the cross-sectional shape of the airflow groove 14. For another example, in an embodiment not shown in the figure, the airflow cavity can be set as a through hole corresponding to the airflow channel one by one, and the airflow groove can be set as a structure connecting the corresponding airflow cavity and the airflow channel. This setting is conducive to simplifying the structure, facilitating manufacturing, reducing costs, and also conducive to expanding the volume of the airflow cavity 11a, thereby facilitating the provision of cooling airflow for multiple nozzles 12 at the same time.

[0052] This arrangement is conducive to cooling both sides of the tool 10 at the same time, thereby improving the cooling efficiency. The connection through hole 11b, the airflow cavity 11a and the airflow groove 14 are arranged to guide the cooling airflow, thereby maintaining the cooling airflow output from the cold port 24b, and passing through the connection through hole 11b, the airflow cavity 11a, the airflow groove 14 and the airflow channel 13 in sequence, and finally being stably and continuously ejected from the nozzle 12.

[0053] The embodiment of the present disclosure further provides a cigarette cutting system, including the tool cooling device provided by the present disclosure, wherein the tool 10 is a circular cutter for cutting cigarettes.

[0054] The use of a tool cooling device is conducive to timely cooling of the circular cutter, avoiding glue accumulation on the circular cutter and affecting the filter rod cutting quality of the cigarette, reducing labor maintenance costs and time costs of downtime maintenance, thereby improving production efficiency.

[0055] According to the following Figure 1-Figure 7 The cutter cooling device and the cigarette cutting system of the disclosed embodiment are described in detail. In this embodiment, the first direction A is the left-right direction.

[0056] In this embodiment, the cigarette cutting system includes a cutter cooling device, and the cutter 10 cooled by the cutter cooling device is a circular cutter of a connecting machine.

[0057] like Figure 1As shown, the tool cooling device of this embodiment includes an air source 7, a bracket 8, two cooling dies 1, a connecting portion 11, a refrigeration assembly 2, and a temperature controller 32. The connecting portion 11 is a plate-like structure. The air source 7 is connected to the refrigeration assembly 2, and compressed air is provided to the vortex tube 24 of the refrigeration assembly 2 from the inlet nozzle 241. The inlet nozzle 241 is arranged between the cold port 24b and the hot port 24a of the vortex tube 24. The compressed air transfers the heat of the inner and outer layers of the airflow in the vortex tube 24 and is converted into a cooling airflow that flows out from the cold port 24b. The two cooling dies 1 are installed on both sides of the tool 10 through the mounting bracket 8, and the nozzles 12 of the two cooling dies 1 are arranged relative to the surface of the tool. The connecting portion 11 connects the two cooling dies 1 and allows the cooling airflow to pass into the two cooling dies 1 at the same time, so as to maintain the flow rate of the airflow ejected from the nozzles 12 on both sides to be consistent, which is conducive to cooling the tool 10 quickly and stably. The temperature measuring element 31 is installed on the cooling die head 1, detects the working temperature of the tool 10 in real time, and is connected to the temperature controller 32 by signal, so as to transmit the detection result to the temperature controller 32. The hot end adjustment mechanism 26 of the refrigeration component 2 is connected to the temperature controller 32 by signal, so that the temperature controller 32 controls the flow rate of the hot air flow output from the hot port 24a according to the working temperature, thereby controlling the temperature and flow rate of the output cooling air flow.

[0058] like Figure 5 As shown, the cooling die head 1 includes a fan ring body 1A and a mounting portion 1B, wherein the mounting portion 1B is located on the side of the fan ring body 1A with the longest arc length and is integrally formed with the fan ring body 1A. Among them, the nozzle 12 and the air flow channel 13 are arranged on the fan ring body 1A. The nozzle 12 is a through hole, one end of which is connected to the air flow channel 13, and the opening at the other end is arranged opposite to the tool surface, so that the cooling air flow and low-temperature compressed air ejected from the nozzle 12 cool the tool surface. The air flow channel 13 is a through hole extending radially along the fan ring body 1A. A plurality of air flow channels 13 are arranged on the fan ring body 1A, and the plurality of air flow channels 13 are arranged at intervals along the circumference of the fan ring body 1A. Each air flow channel 13 is connected to a plurality of nozzles 12, and two adjacent nozzles 12 are arranged at intervals from each other along the extension direction of the air flow channel 13. The mounting portion 1B includes two threaded holes arranged symmetrically on the left and right, so that the cooling die head 1 is threadedly connected to the bracket 8.

[0059] like Figure 6 and Figure 7As shown, the connecting portion 11 includes an airflow cavity 11a and a connecting portion through hole 11b. The cooling die 1 also includes an airflow groove 14, which is arranged in a U shape along the arc length of the fan-shaped ring body 1A of the cooling die 1. The airflow groove 14 is connected to the airflow channel 13 and is located below the nozzle 12 and the airflow channel 13. The end of the airflow channel 13 away from the airflow groove 14 is sealed by a seal 15. The two ends of the airflow cavity 11a are respectively arranged opposite to the airflow grooves 14 of the two cooling dies 1, and are connected to the airflow grooves 14. One end of the connecting portion through hole 11b is connected to the airflow cavity 11a, and the other end has a thread for threaded connection with the air pipe.

[0060] like Figure 1 and Figure 2 As shown, the refrigeration assembly 2 includes a vortex tube 24 and a hot end regulating mechanism 26. The vortex tube 24 extends in the left-right direction and is integrally formed with the housing 263 of the hot end regulating mechanism 26. The vortex tube 24 has a middle cavity 42 extending in the left-right direction, and the middle cavity 42 communicates with the hot port 24a and the cold port 24b respectively arranged at both ends of the vortex tube 24. The vortex tube 24 can be installed by a magnetic seat.

[0061] The vortex tube 24 includes an inlet nozzle 241 and a separation orifice plate. The inlet nozzle 241 is connected to the gas source 7, and the gas source 7 is connected to the electromagnetic valve 9 by signal, and the electromagnetic valve 9 controls the on and off of the gas source 7. The compressed air output by the gas source 7 enters the outer cavity 41 of the vortex tube 24 through the inlet nozzle 241, and forms a high-speed rotating original airflow in the middle cavity 42. The flow rate of the original airflow can be changed by adjusting the working pressure of the inlet nozzle 241. For example, increasing the working pressure of the inlet nozzle 241 can increase the flow rate of the original airflow, and vice versa, reduce the flow rate of the original airflow. Part of the gas of the outer layer original airflow flows to the hot port 24a of the vortex tube and flows out from the hot port 24a, and the inner layer original airflow is blocked by the regulating valve 261 of the hot end regulating mechanism 26, and under the action of the pressure difference between the inner and outer layers of fluid, the flow direction changes and flows to the direction of the cold port 24b. In this process, the inner layer original airflow exchanges heat with the outer layer original airflow, the temperature of the inner layer original airflow rapidly decreases and forms a cooling airflow, and the temperature of the outer layer original airflow rapidly increases and forms a hot airflow. The aperture of the separation orifice plate is approximately half of the radial dimension of the inner cavity 42 and is configured to allow cooling airflow to pass through and block hot airflow from flowing toward the cold port 24 b , thereby allowing the cooling airflow to flow out of the cold port 24 b .

[0062] like Figure 3As shown, the hot end regulating mechanism 26 includes a regulating valve 261, a driving device 262 and a shell 263. One end of the regulating valve 261 is arranged opposite to the hot port 24a in the left-right direction. The shell 263 has an inner wall, and the inner wall forms a chamber for accommodating the regulating valve 261. A plurality of exhaust holes 63a are evenly distributed along the circumferential direction on one side of the shell 263 close to the hot port 24a. The high-temperature outer layer air flow flowing out of the hot port 24a is discharged from the refrigeration component 2 through the exhaust holes 63a. An annular flange 421 protruding toward the middle cavity 42 is provided on the inner wall of the vortex tube 24, and a circular hot port 24a is formed by the arc surface of the annular flange 421. The regulating valve 261 includes a valve head 611, a valve body 612 and a valve stem 613. The valve head 611 is formed by connecting a truncated cone body and a cylindrical body in the left-right direction, one end of the cylindrical body is connected to the valve body 612, and the other end is connected to the truncated cone body. One end of the truncated cone is connected to the cylinder, and the other end is arranged opposite to the hot port 24a. The diameter of the smallest cross section of the truncated cone perpendicular to the central axis is smaller than the diameter of the hot port 24a, and the diameter of the largest cross section is larger than the diameter of the hot port 24a, so that the regulating valve 261 forms a gradually increasing or decreasing annular gap in the process of departing from or approaching the hot port 24a. This arrangement is conducive to the uniform distribution of the airflow in the vortex tube 24, maintaining the stability of the airflow, and is conducive to uniformly adjusting the flow of the cooling airflow.

[0063] like Figure 3 and Figure 4 As shown, the slide groove 263a extends in the left-right direction on the inner wall of the housing 263 and is located on the right side of the exhaust hole 63a. The valve body 612 has a slide table 121 that slidably cooperates with the slide groove 263a, and the slide groove 263a cooperates with the slide table 121 to limit the rotation of the valve body 612 around the central axis, thereby limiting the rotation of the regulating valve 261. This arrangement is conducive to the stable movement of the regulating valve 261 in the left-right direction and enhancing the stability of the structure. One end of the valve stem 613 is connected to the end of the valve body 612 that is away from the valve head 611, and the other end includes a threaded hole.

[0064] like Figure 1-Figure 3As shown, the driving device 262 includes a driving rod 621 and a motor 622. The driving rod 621 of the driving device 262 is threadedly connected to the regulating valve 261 through the threaded hole of the valve stem 613. The other end of the driving rod 621 is detachably connected to the motor 622 through a coupling. The motor 622 drives the driving rod 621 to rotate, and a torque is generated between the driving rod 621 and the threaded hole of the valve stem 613 to convert the rotary motion between the driving rod 621 and the regulating valve 261 into a linear movement of the regulating valve 261 in the left and right directions. The motor 622 rotates clockwise, pushing the regulating valve 261 to move leftward, the annular gap between the valve head 611 and the hot port 24a is reduced, the flow rate of the hot air flow gradually decreases, and the temperature and flow rate of the cooling air flow gradually increase. Conversely, the motor 622 rotates counterclockwise, pulling the regulating valve 261 to move rightward, the annular gap between the valve head 611 and the hot port 24a is expanded, the flow rate of the hot air flow gradually increases, and the temperature and flow rate of the cooling air flow gradually decrease.

[0065] The temperature controller 32 includes a control chip, a switch output and other components (not shown). The temperature measuring element 31 can be a non-contact temperature sensor, which is installed on the tool 10, and the detection end of the temperature sensor is perpendicular to the surface of the tool and is arranged at intervals to detect the working temperature of the tool 10. At the same time, the temperature sensor converts the detected working temperature into an electrical signal. The control chip processes the electrical signal received from the temperature sensor, compares it with the set first temperature value, and then generates a control signal. In this embodiment, the first temperature value is set to 50°C. The switch output converts the control signal into an actual refrigeration signal to control the rotation direction of the motor 622.

[0066] The following specifically describes a cooling method for cooling the tool 10 using the tool cooling device based on the structure of the tool cooling device described above.

[0067] The vortex tube 24 receives the compressed air outputted by the air source 7 and outputs a cooling airflow. The temperature controller 32 controls the hot end regulating mechanism 26 to change the flow rate of the hot airflow outputted by the hot port 24a according to the working temperature detected by the temperature measuring element 31 to change the temperature and flow rate of the cooling airflow outputted by the vortex tube 24. The cooling die head 1 receives the cooling airflow and sprays the cooling airflow toward the tool surface of the tool 10 through the nozzle 12.

[0068] A temperature controller 32 is provided to control the flow rate of the hot air flow according to the working temperature of the tool 10 detected by the temperature measuring element 31, thereby controlling the temperature and flow rate of the cooling air flow output by the vortex tube 24, and then receiving the cooling air flow through the cooling die head 1 and spraying the cooling air flow to the tool 10 through the nozzle 12. This is beneficial to timely reducing the temperature of the tool 10 according to the working conditions, avoiding overheating of the tool 10 and affecting cutting, and is also beneficial to realizing automatic cooling of the tool 10, reducing manual inspection, and improving cooling efficiency.

[0069] An inlet nozzle 241 is provided between the cold port 24b and the hot port 24a on the vortex tube 24. The vortex tube 24 receives the compressed air outputted by the air source 7 through the inlet nozzle 241. The working pressure of the inlet nozzle 241 is increased to increase the flow rate of the cooling airflow, or the working pressure of the inlet nozzle is decreased to reduce the flow rate of the cooling airflow.

[0070] The temperature controller 32 controls the hot end regulating mechanism 26 so that the greater the flow rate of the hot air flow output by the refrigeration component 2, the lower the temperature of the output cooling air flow. However, since the total amount of compressed air remains unchanged, the flow rate of the output cooling air flow will also decrease accordingly. Adjusting the working pressure of the inlet nozzle 241 is beneficial to increasing the flow rate when the flow rate of the cooling air flow is small, so as to improve the stability of the cooling process, and reducing the flow rate when the flow rate of the cooling air flow is large, so as to avoid causing the tool temperature to be too low and reduce the performance.

[0071] When the operating temperature is greater than or equal to the first temperature value, the temperature controller 32 adjusts the hot end regulating mechanism 26 to increase the flow rate of the hot air flow output by the vortex tube 24, thereby reducing the temperature of the output cooling air flow. When the operating temperature is less than the first temperature value and greater than or equal to the second temperature value, the temperature controller 32 controls the hot end regulating mechanism 26 to maintain the flow rate of the output hot air flow, thereby maintaining the temperature of the output cooling air flow. When the operating temperature is less than the second temperature value, the temperature controller 32 adjusts the hot end regulating mechanism 26 to reduce the flow rate of the hot air flow output by the refrigeration component 2, thereby increasing the temperature of the output cooling air flow. The first temperature value is the highest limit value of the operating temperature, for example: 50°C. The second temperature value is less than the first temperature value, for example: 30°C.

[0072] When the operating temperature of the tool 10 is high, the temperature controller 32 timely adjusts the hot end regulating mechanism 26 to reduce the temperature of the cooling airflow, which is beneficial to quickly reduce the surface temperature of the tool. When the tool 10 gradually cools down, the temperature controller 32 controls the hot end regulating mechanism 26 to maintain the flow rate and temperature of the cooling airflow, or reduces the flow rate of the hot airflow to increase the temperature of the cooling airflow, which is beneficial to maintain the temperature of the tool surface, thereby maintaining the cutting performance of the tool 10.

[0073] For example, the tool cooling device starts to operate, the solenoid valve 9 controls the air source 7 to open and delivers compressed air to the refrigeration component 2 through the inlet nozzle 241. When the temperature measuring element 31 detects that the working temperature is greater than or equal to 50°C, the temperature controller 32 controls the motor 622 to rotate counterclockwise, and the drive rod 621 drives the regulating valve 261 to move rightward and away from the hot port 24a, thereby increasing the flow rate of the hot air flow output from the hot port 24a, thereby reducing the temperature of the cooling air flow. This method is conducive to quickly reducing the working temperature of the tool 10, avoiding the phenomenon of glue accumulation caused by excessive temperature, thereby avoiding the occurrence of drawing or staining at the cut of the cigarette to affect the production quality of the cigarette.

[0074] When the temperature measuring element 31 detects that the working temperature is less than 50°C and greater than or equal to 30°C, the temperature controller 32 does not send a signal to the motor 622, the motor 622 stops rotating, and the regulating valve 261 maintains the size of the annular gap with the hot port 24a, thereby maintaining the temperature of the output cooling airflow. When the temperature measuring element 31 detects that the working temperature is less than 30°C, the temperature controller 32 controls the motor 622 to rotate clockwise, and the driving rod 621 drives the regulating valve 261 to move to the left and approach the hot port 24a, thereby reducing the flow of the hot air flow output from the hot port 24a, thereby increasing the temperature of the cooling airflow. This method is conducive to maintaining or reducing the output of the hot air flow after the working temperature of the tool 10 drops, maintaining or increasing the temperature of the cooling airflow, thereby helping to avoid the tool 10 being overcooled, resulting in a lower hardness, which is easy to aggravate the wear of the tool and affect the cutting efficiency of the tool 10.

[0075] When the flow rate of the cooling airflow is small, the working pressure of the inlet nozzle 241 is increased. When the flow rate of the cooling airflow is large, the working pressure of the inlet nozzle 241 is decreased.

[0076] The tool cooling device stops working, the solenoid valve 9 controls the air source 7 to be closed, and the air source 7 no longer provides compressed air to the refrigeration component 2 or supplements the cooling air flow with low-temperature compressed air.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution for protection requested by the present disclosure.

Claims

1. A tool cooling device, characterized in that: include: An air source (7) configured to provide compressed air; A refrigeration component (2), comprising a vortex tube (24) and a hot end regulating mechanism (26), wherein the vortex tube (24) comprises an inlet nozzle (241), a cold port (24b) and a hot port (24a), wherein the vortex tube (24) receives the compressed air from the air source (7) through the inlet nozzle (241) and outputs a low-temperature cooling airflow through the cold port (24b), and outputs a high-temperature hot airflow through the hot port (24a), and wherein the hot end regulating mechanism (26) changes the temperature and flow rate of the cooling airflow output from the cold port (24b) by changing the flow rate of the hot airflow output from the hot port (24a); A cooling die head (1), which is in communication with the cold port (24b) of the vortex tube (24) to receive the cooling airflow, comprises a nozzle (12), wherein the nozzle (12) is arranged to be disposed opposite to a tool surface of the tool (10) to spray the cooling airflow toward the tool surface; A temperature measuring element (31) configured to detect the working temperature of the surface of the tool; and A temperature controller (32) is signal-connected to the temperature measuring element (31) and the hot end regulating mechanism (26) of the refrigeration assembly (2), and is configured to control the hot end regulating mechanism (26) to change the flow rate of the hot air flow output by the hot port (24a) according to the working temperature.

2. The tool cooling device according to claim 1, characterized in that: The refrigeration assembly (2) extends along a first direction (A); The hot end regulating mechanism (26) comprises a regulating valve (261) and a driving device (262), one end of the regulating valve (261) being arranged opposite to the hot port (24a) along the first direction (A), the driving device (262) being drivingly connected to the regulating valve (261) and signal-connected to the temperature controller (32), and being configured to drive the regulating valve (261) to move along the first direction (A) to deviate from or approach the hot port (24a) according to the working temperature, so as to enlarge or reduce the gap between the regulating valve (261) and the hot port (24a) so as to change the flow rate of the hot air flow output by the hot port (24a).

3. The tool cooling device according to claim 2, characterized in that: The hot end regulating mechanism (26) comprises a shell (263), the shell (263) having a slide groove (263a), the slide groove (263a) extending along the first direction (A), the regulating valve (261) having a surface slidably matched with the slide groove (263a), and the driving device (262) drives the regulating valve (261) to slide in the slide groove (263a) so that the regulating valve (261) moves away from or close to the hot port (24a).

4. The tool cooling device according to claim 2, characterized in that: The driving device (262) comprises: a driving rod (621), one end of which is threadedly connected to the regulating valve (261) so as to convert the rotary motion between the driving rod (621) and the regulating valve (261) into a linear motion of the regulating valve (261) along the first direction (A); and The motor (622) is drivingly connected to the end of the driving rod (621) facing away from the regulating valve (261), and is signal-connected to the temperature controller (32). The temperature controller (32) adjusts the rotation direction of the motor (622) according to the working temperature, so that the motor (622) drives the driving rod (621) to change the rotation direction, thereby causing the regulating valve (261) to face away from or approach the hot port (24a).

5. The tool cooling device according to any one of claims 1 to 4, characterized in that: The cooling die head (1) further comprises at least one air flow channel (13), wherein the air flow channel (13) is in communication with the plurality of nozzles (12) and the cold port (24b) of the vortex tube (24).

6. The tool cooling device according to claim 5, characterized in that: The cooling die head (1) comprises a fan-shaped body (1A), the air flow channel (13) and the nozzle (12) are arranged on the fan-shaped body (1A), the air flow channel (13) extends radially along the fan-shaped body (1A), a plurality of the air flow channels (13) are arranged at intervals along the circumference of the fan-shaped body (1A), and a plurality of nozzles (12) corresponding to each of the air flow channels (13) are arranged at intervals from each other along the extension direction of the air flow channel (13).

7. The tool cooling device according to claim 5, characterized in that: include: The two cooling dies (1) are configured to be disposed on both sides of the tool (10) and opposite to each other, the cooling dies (1) comprising an air flow groove (14), the air flow groove (14) being in communication with the air flow channel (13); and The connecting portion (11) is arranged between the two cooling dies (1) and comprises an airflow cavity (11a) and a connecting portion through hole (11b), wherein two ends of the airflow cavity (11a) are respectively arranged opposite to the airflow grooves (14) of the two cooling dies (1) and are in communication with the airflow grooves (14), and two ends of the connecting portion through hole (11b) are respectively in communication with the airflow cavity (11a) and the cold port (24b) of the vortex tube (24).

8. A cigarette cutting system, characterized in that: The tool cooling device comprises the tool cooling device according to any one of claims 1 to 7, wherein the tool (10) is a circular cutter (3') for cutting cigarettes.

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