Device for measuring sealing and cutting shear force of tobacco packaging machine

Abstract

The invention provides a sealing and cutting shearing force measuring device for a tobacco packaging machine, an upper machine base and a lower machine base are vertically arranged at a cutting and sealing station of the packaging machine at an interval, a shearing cylinder of a shearing unit is arranged on the lower machine base, a movable rod of the shearing cylinder extends upwards along the vertical direction, and a cutting and sealing blade is connected with the movable rod of the shearing cylinder. The shearing unit is provided with a shearing force sensor for measuring a shearing force value in a cutting and sealing process; a hot-pressing cylinder of the heat-sealing unit is arranged on an upper machine base, a movable rod extends downwards in the vertical direction, a temperature-adjustable heating mechanism is connected with a heat-sealing pressing base in a heat conduction mode, and the hot-pressing unit is provided with a temperature sensor for measuring the temperature value in the cutting and sealing process. And the measurement information processing unit receives and processes a shear force measurement value and a temperature measurement value in the sealing and cutting process. The shearing force is measured in real time in the cutting and sealing process of the heat-sealing film, and the temperature value of the heat-sealing film is measured in real time, so that the problems of non-uniform shearing force and non-uniform fusion temperature are conveniently found and solved in time, and the packaging quality of tobacco products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tobacco product packaging, and in particular provides a sealing and cutting shear force measuring device for a tobacco packaging machine. Background Art

[0002] After tobacco products such as cigarette strips are processed, a tobacco packaging machine is usually used to wrap a heat-sealing film on the packaging surface of the tobacco products to avoid problems such as moisture and looseness during transportation.

[0003] Take cigarette cartons as an example. On a tobacco packaging machine, cigarette cartons are sorted and transported from the production line to the conveyor belt. The wrapping mechanism props up a heat-sealing film in the cigarette carton wrapping line. The cigarette cartons are pushed sideways by the pushing mechanism and pass through the heat-sealing mechanism. The propped-up heat-sealing film is pulled and wrapped around the cigarette cartons as they move. The heat-sealing mechanism moves to heat-press and fuse the heat-sealing film, and the cutter shears the heat-sealing film at the fusion point to form a complete and tight film package.

[0004] When wrapping existing cigarette strips, they are all arranged horizontally along the length direction of the heat-sealing film, and the width of the heat-sealing film is relatively large when wrapping a single cigarette strip. When the shear force applied by the cutter in the width direction of the heat-sealing film is uneven, the problem that the heat-sealing film is disconnected first at one end of the shearing point and then disconnected at the other end is likely to occur. At this time, the film is in a heated state, and the above problem causes the phenomenon that one end of the film is firmly fused and sealed, while the other end is cracked and cannot be fused, affecting the product packaging quality. Furthermore, it is also common to have uneven fusion caused by the high heating temperature at one end of the heat-sealing film at the shearing point and the low heating temperature at the other end. The current tobacco packaging machine does not have a shear force measuring component at the cutting and sealing point, and cannot measure the shear force of the heat-sealing film in real time. It also does not have a fusion temperature measuring component, and cannot measure the temperature of the heat-sealing film in real time. Therefore, it is impossible to promptly discover the phenomenon of uneven shear force and uneven fusion temperature, resulting in the above problem not being solved in a timely manner, affecting the stable packaging quality of tobacco products such as cigarette strips. Moreover, due to factors such as the fast movement speed of the cutter during the heat sealing process and the small installation space, it is difficult to install mechanical measurement elements on the cutter, and the mechanical measurement method of the traditional structure cannot measure shear force. Summary of the invention

[0005] Based on this, the present invention provides a sealing and cutting shear force measuring device for a tobacco packaging machine, which measures the shear force of the heat-sealing film in real time during the cutting and sealing process of the heat-sealing film of tobacco strips, and measures the temperature value of the heat-sealing film in real time, so as to timely discover and solve the problems of uneven shear force and uneven fusion temperature of the heat-sealing film along the width direction of the tobacco product, thereby improving the packaging quality of the tobacco product.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a tobacco packaging machine sealing and cutting shear force measuring device, comprising an upper machine base and a lower machine base, a shearing unit, a heat sealing unit and a measurement information processing unit. The upper machine base and the lower machine base are arranged at the cutting and sealing station of the packaging machine with a vertical interval, and the heat sealing film wrapping the tobacco product passes through the gap between the upper machine base and the lower machine base; the shearing unit comprises a shearing cylinder and a cutting and sealing blade, the shearing cylinder is arranged on the lower machine base and the movable rod extends vertically upward, the cutting and sealing blade is connected to the movable rod of the shearing cylinder, and the shearing unit is provided with a shear force sensor for measuring the shear force value during the cutting and sealing process; the heat sealing unit comprises a hot pressing cylinder and a heat sealing pressing seat, the hot pressing cylinder is arranged on the upper machine base and the movable rod extends vertically downward, the temperature-adjustable heating mechanism is connected to the heat sealing pressing seat by thermal conduction, and the hot pressing unit is provided with a temperature sensor for measuring the temperature value during the cutting and sealing process; the measurement information processing unit is connected to the shear force sensor and the temperature sensor signal, and is configured to receive and process the shear force measurement value and the temperature measurement value of the sealing and cutting process.

[0007] Furthermore, the shearing cylinder includes a left shearing cylinder and a right shearing cylinder, the lower machine base is provided with a transverse through hole through which the cutting and sealing blade passes, and the bottom of the lower machine base is symmetrically provided with a left U-shaped frame and a right U-shaped frame at both ends of the transverse through hole, the left shearing cylinder is supported by the left U-shaped frame and is drivingly connected to the left end of the cutting and sealing blade, and the right shearing cylinder is supported by the right U-shaped frame and is drivingly connected to the right end of the cutting and sealing blade.

[0008] Furthermore, the shear force sensor includes a left shear force sensor and a right shear force sensor, the left shear force sensor is configured to measure the shear force on the left end of the cutting and sealing blade borne by the active rod of the left shear cylinder, and the right shear force sensor is configured to measure the shear force on the right end of the cutting and sealing blade borne by the active rod of the right shear cylinder.

[0009] Furthermore, the measurement information processing unit is provided with a shear force processing module, which is configured to receive the shear force measurement values ​​of the left shear force sensor and the right shear force sensor during a single cutting and sealing process and perform difference calculation. When it is calculated that the shear force difference during a single cutting and sealing process exceeds a set range, the measurement information processing unit outputs shear force alarm information to the outside.

[0010] Furthermore, the left U-shaped frame and the right U-shaped frame are opened upward and have mounting holes at the bottom centers, the cylinder bodies of the left shear cylinder / right shear cylinder pass through the mounting holes and extend downward, the movable rods extend from the upper ends of the cylinder bodies and are respectively connected to the left and right ends of the cutting and sealing blades, the left shear force sensor is arranged between the bottom center of the left U-shaped frame and the top of the cylinder body of the left shear cylinder, and the right shear force sensor is arranged between the bottom center of the right U-shaped frame and the top of the cylinder body of the right shear cylinder.

[0011] Furthermore, a blade seat is arranged between the movable rod of the shear cylinder and the cutting and sealing blade, and a blade mounting groove is arranged on the top surface of the blade seat. The cutting and sealing blade is installed in the blade mounting groove in an adjustable position, and a left adjusting screw and a right adjusting screw are arranged at both ends of the blade mounting groove for respectively adjusting the protruding height of the two ends of the cutting and sealing blade.

[0012] Furthermore, the heat sealing seat includes an upper heat sealing seat and a lower heat sealing seat which are vertically opposite to each other, the upper heat sealing seat is connected to the movable rod of the heat pressing cylinder, the lower heat sealing seat is arranged on the lower machine base and vertically opposite to the upper heat sealing seat, the lower machine base is provided with a transverse through-opening through which the cutting and sealing blade passes, the lower heat sealing seat includes two symmetrically arranged on both sides of the transverse through-opening, the lower end of the movable rod of the heat pressing cylinder is provided with a movable seat arranged opposite to the transverse through-opening, the upper heat pressing seat includes two symmetrically arranged on both sides of the movable seat, and a space for accommodating the front end of the cutting and sealing blade to enter is formed between the movable seat and the upper heat pressing seat.

[0013] Furthermore, the temperature sensor includes a left temperature sensor and a right temperature sensor, the left temperature sensor is arranged near the left end of the lower heat sealing seat and is configured to measure the left end temperature of the cutting and sealing process, and the right temperature sensor is arranged near the right end of the lower heat sealing seat and is configured to measure the right end temperature of the cutting and sealing process.

[0014] Furthermore, the measurement information processing unit is provided with a temperature processing module, which is configured to receive the temperature measurement values ​​of the left temperature sensor and the right temperature sensor during a single cutting and sealing process and perform difference calculation. When the calculated temperature difference of the single cutting and sealing process exceeds a set range, the measurement information processing unit outputs temperature alarm information to the outside.

[0015] Furthermore, the hot pressing cylinder includes a left hot pressing cylinder and a right hot pressing cylinder, the left hot pressing cylinder is arranged at the left end of the upper machine base and the movable rod is connected to the left end of the movable seat, and the right hot pressing cylinder is arranged at the right end of the upper machine base and the movable rod is connected to the right end of the movable seat.

[0016] Compared with the prior art, the present invention provides a device for measuring the sealing and cutting shear force of a tobacco packaging machine, and its technical advantages are at least reflected in the following aspects:

[0017] 1. A hot pressing unit with a temperature sensor and a cutting and sealing unit with a shear force sensor are provided in the tobacco packaging machine. During the cutting and sealing process of tobacco products, the hot pressing cylinder of the hot pressing unit drives the heat sealing press seat to merge, and the heat-pressing fusion of the heat-sealing film is performed. The shearing cylinder of the cutting and sealing unit drives the shearing blade to move upward, and cuts off the heat-sealing film wrapping the tobacco strips, forming a complete and tight film package. During the above-mentioned cutting and sealing process of the heat-sealing film, the shear force sensor measures the shear force value, and the temperature sensor measures the temperature value in real time. The measurement information processing unit collects and processes the measurement values, and provides the operator with the temperature and shear force data of each cutting and sealing process, so that the operator can master the relevant measurement information, timely discover the problem that the temperature and shear force exceed the design range, and perform shutdown debugging to solve it, thereby avoiding the continuous occurrence of unqualified packaging quality problems, which is conducive to improving the packaging quality of tobacco products;

[0018] 2. The left shear cylinder and the right shear cylinder respectively apply shear force to the two ends of the cutting and sealing blade, so that the shear force on the heat-sealed film is more uniform over the entire length of the cutting and sealing blade, so that the heat-sealed film can be cut more uniformly, and the entire length of the heat-sealed film can be cut at the same time; and a left shear force sensor and a right shear force sensor are arranged at both ends of the cutting and sealing blade, which can monitor the shear force borne by the two ends of the shear blade, and timely discover the problem of shear force imbalance through calculation and comparison by the measurement information processing unit. The above structure does not require the shear force sensor to reciprocate at high speed with the cutting and sealing blade, which improves the accuracy of shear force measurement and enhances the durability of the shear force sensor;

[0019] 3. By applying force to the upper heat-sealing press seat through the left and right heat-sealing cylinders respectively, the pressure applied to the heat-sealing film by both ends of the heat-sealing press seat can be balanced. In addition, by setting the left temperature sensor and the right temperature sensor, the left and right temperatures of the lower heat-sealing press seat are measured respectively. The information measurement and processing unit is used for calculation and comparison, so as to timely find out whether the two ends of the heat-sealing film in the width direction are balanced, and send out an alarm message when the temperature difference between the two ends exceeds the set range, so that the staff can quickly find the temperature imbalance problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the sealing and cutting shear force measuring device for a tobacco packaging machine provided;

[0022] Figure 2 is a front view of an embodiment of the provided tobacco packaging machine sealing and cutting shear force measuring device;

[0023] Figure 3 is a side view of an embodiment of the provided device for measuring the sealing and cutting shear force of a tobacco packaging machine;

[0024] Figure 4 It is a structural block diagram of the sealing and cutting shear force measuring device of the tobacco packaging machine provided;

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the lower machine base and connecting parts provided;

[0026] Figure 6 It is a schematic diagram of the structure of the lower machine base and connecting parts in the disassembled state provided;

[0027] Figure 7 It is a schematic diagram of the structure of the provided knife holder and the sealing and cutting blade in the disassembled state;

[0028] Figure 8 It is a three-dimensional structural schematic diagram of the upper machine base and connecting parts provided;

[0029] Fig. 9 It is a schematic diagram of the disassembled structure of the upper machine base and connecting parts provided;

[0030] Fig.10 It is a schematic diagram of the state of the sealing and cutting shear force measuring device of the tobacco packaging machine provided performing heat pressing of the heat sealing film;

[0031] Fig.11 It is a schematic diagram of the state of the sealing and cutting shear force measuring device of the tobacco packaging machine provided performing heat sealing film cutting.

[0032] Description of the accompanying drawings:

[0033] 1- Lower base;

[0034] 21a-left U-shaped frame, 21b-right U-shaped frame, 22a-left shearing cylinder, 22b-right shearing cylinder, 23a-left shearing force sensor, 23b-right shearing force sensor, 24-knife holder, 25-cutting and sealing blade, 26a-left adjusting screw, 26b-right adjusting screw;

[0035] 31-lower heat sealing press seat, 32a-left temperature sensor, 32b-right temperature sensor;

[0036] 4- Upper machine base;

[0037] 51a-left hot pressing cylinder, 51b-right hot pressing cylinder, 52-movable seat, 53-upper heat sealing seat;

[0038] 6- Measurement information processing unit;

[0039] 7-Heat sealing film.

[0040] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0041] In current tobacco product packaging machines, when wrapping cigarette strips, the heat-sealing film is generally arranged horizontally along the length direction of the heat-sealing film. When wrapping a single cigarette strip, the heat-sealing film is relatively wide, which easily leads to uneven shear force and uneven heating temperature of the heat-sealing film during the sealing and cutting process. Since there is no shear force measuring component and temperature measuring component at the cutting and sealing position, the shear force and temperature of the heat-sealing film cannot be measured in real time, and the phenomenon of uneven shear force and uneven fusion temperature cannot be discovered in time, resulting in the above problems not being solved in time, affecting the stable packaging quality of tobacco products such as cigarette strips. .

[0042] To this end, the present invention provides a tobacco packaging machine sealing and cutting shear force measuring device, wherein the upper machine base and the lower machine base are arranged at the cutting and sealing station of the packaging machine with a vertical interval, the shear cylinder of the shearing unit is arranged on the lower machine base and the movable rod extends vertically upward, the cutting and sealing blade is connected to the movable rod of the shear cylinder, and the shearing unit is provided with a shear force sensor for measuring the shear force value during the cutting and sealing process; the heat-pressing cylinder of the heat-sealing unit is arranged on the upper machine base and the movable rod extends vertically downward, the temperature-adjustable heating mechanism is connected to the heat-sealing press seat by thermal conduction, and the heat-pressing unit is provided with a temperature sensor for measuring the temperature value during the cutting and sealing process; the measurement information processing unit receives and processes the shear force measurement value and the temperature measurement value of the sealing and cutting process. The shear force is measured in real time during the cutting and sealing process of the heat-sealing film, and the temperature value of the heat-sealing film is measured in real time, so as to timely discover and solve the problems of uneven shear force and uneven fusion temperature, and improve the packaging quality of tobacco products.

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Embodiment 1:

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the present invention provides a tobacco packaging machine sealing and cutting shear force measuring device, including an upper machine base 4 and a lower machine base 1, a shearing unit, a heat sealing unit and a measurement information processing unit 6. The upper machine base 4 and the lower machine base 1 are arranged at a cutting and sealing station of the packaging machine with a vertical interval, and the heat sealing film 7 wrapping the tobacco product passes through the gap between the upper machine base 4 and the lower machine base 1; the shearing unit includes a shearing cylinder and a cutting and sealing blade 25, the shearing cylinder is arranged on the lower machine base 1 and the movable rod extends vertically upward, the cutting and sealing blade 25 is connected to the movable rod of the shearing cylinder, and the shearing unit is provided with a shear force sensor for measuring the shear force value during the cutting and sealing process; the heat sealing unit includes a hot pressing cylinder and a heat sealing pressing seat, the hot pressing cylinder is arranged on the upper machine base 4 and the movable rod extends vertically downward, the temperature-adjustable heating mechanism is connected to the heat sealing pressing seat by thermal conduction, and the hot pressing unit is provided with a temperature sensor for measuring the temperature value during the cutting and sealing process; and the measurement information processing unit 6 is connected to the shear force sensor and the temperature sensor signal, and is configured to receive and process the shear force measurement value and the temperature measurement value of the sealing and cutting process.

[0046] like Fig.10 and Fig.11 As shown, the working principle of the sealing and cutting shear force measuring device for a tobacco packaging machine provided is as follows:

[0047] On the tobacco packaging machine, the film wrapping mechanism supports the heat-sealing film 7 on the front side of the upper machine base 4 and the lower machine base 1. The heat-sealing film 7 passes through the wrapping operation line vertically. The hot pressing unit and the cutting and sealing unit are arranged behind the film wrapping mechanism. Tobacco products such as cigarette cartons are sorted and transported to the conveyor belt by the production line, and are pushed sideways by the pushing mechanism to pass through the hot pressing unit and the cutting and sealing unit. The heat-sealing film 7 supported by the film wrapping mechanism is pulled and wrapped on the tobacco products such as cigarette cartons as they move. The hot pressing cylinder of the hot pressing unit drives the heat sealing press seat to merge, and performs hot pressing and fusion of the heat sealing film. The shearing cylinder of the cutting and sealing unit drives the shearing blade 25 to move upward, and cuts off the heat sealing film 7 wrapping the cigarette strips, forming a complete and tight film package. In the above-mentioned cutting and sealing process of the heat sealing film 7, the shear force sensor of the shearing unit measures the shear force value, and the temperature sensor of the hot pressing unit measures the temperature value in real time. The information processing unit receives and processes the measured temperature value in real time, and provides relevant data to the operator, so that the operator can promptly discover the problems of uneven shear force and uneven fusion temperature, and combine the measurement to debug and solve them, thereby effectively improving the packaging quality of tobacco products.

[0048] Based on the provided tobacco packaging machine sealing and cutting shear force measuring device, by setting a hot pressing unit and a cutting and sealing unit, and setting a temperature sensor in the hot pressing unit and a shear force sensor in the shearing unit, it is possible to measure the temperature value and the shear force value in real time during the cutting and sealing process of the heat-sealing film of the tobacco product, and collect and process the measured values ​​through the measurement information processing unit 6, and provide the operator with the temperature and shear force data of each cutting and sealing process, so that the operator can grasp the relevant measurement information, promptly discover the problem that the temperature and shear force exceed the design range, and stop the machine for debugging to solve it, thereby avoiding the continuous occurrence of unqualified packaging quality problems and effectively improving the packaging quality of tobacco products.

[0049] Embodiment 2:

[0050] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in order to solve the problem that the tobacco leaf product in the prior art is relatively wide and the shear force at both ends is easily inconsistent during the cutting and sealing process, the structure is optimized on the basis of the first embodiment, specifically:

[0051] In some preferred embodiments, the shearing cylinder includes a left shearing cylinder 22a and a right shearing cylinder 22b, the lower machine base 1 is provided with a transverse through hole through which the cutting and sealing blade 25 passes, and the bottom of the lower machine base 1 is symmetrically provided with a left U-shaped frame 21a and a right U-shaped frame 21b at both ends of the transverse through hole, the left shearing cylinder 22a is supported by the left U-shaped frame 21a and is drivingly connected to the left end of the cutting and sealing blade 25, and the right shearing cylinder 22b is supported by the right U-shaped frame 21b and is drivingly connected to the right end of the cutting and sealing blade 25.

[0052] During the implementation, the left U-shaped frame 21a and the right U-shaped frame 21b are opened upward and have a mounting hole at the center of the bottom. The cylinder body of the left shearing cylinder 22a / right shearing cylinder 22b passes through the mounting hole and extends downward, and the movable rod extends from the upper end of the cylinder body and is respectively connected to the left and right ends of the cutting and sealing blade 25. Compared with the prior art in which a shearing cylinder arranged in the middle applies shear force to the cutting and sealing blade, the left shearing cylinder 22a and the right shearing cylinder 22b are provided based on the above embodiment, and the shear force is applied to the two ends of the cutting and sealing blade 25 by the left shearing cylinder 22a and the right shearing cylinder 22b respectively, so that the shear force on the heat-sealing film over the entire length of the cutting and sealing blade is more uniform, so that the heat-sealing film can be cut more uniformly, and the entire length of the heat-sealing film 7 can be cut simultaneously.

[0053] Furthermore, in some preferred embodiments, in order to monitor the shear force borne by the two ends of the shear blade 25, a left shear force sensor 23a and a right shear force sensor 23b are provided at the two ends of the cutting and sealing blade 25. The specific implementation process is that the shear force sensor includes a left shear force sensor 23a and a right shear force sensor 23b. The left shear force sensor 23a is configured to measure the shear force borne by the movable rod of the left shear cylinder 22a at the left end of the cutting and sealing blade 25, and the right shear force sensor 23b is configured to measure the shear force borne by the movable rod of the right shear cylinder 22b at the right end of the cutting and sealing blade 25. The left shear force sensor 23a is provided between the bottom center of the left U-shaped frame 21a and the top of the cylinder body of the left shear cylinder 22a, and the right shear force sensor 23b is provided between the bottom center of the right U-shaped frame 21b and the top of the cylinder body of the right shear cylinder 22b.

[0054] During the implementation process, the shear force of the cutting and sealing blade 25 on the heat-sealing film 7 is equal to the force of the movable rod of the shear cylinder on the cutting and sealing blade 25. According to the principle of interaction force, the force of the movable rod on the cutting and sealing blade 25 is equal to the force of the cylinder body on the U-shaped frame, and the shear force sensor detects the force of the cylinder body on the U-shaped frame. Therefore, the shear force sensor can accurately measure the shear force of the cutting and sealing blade 25 on the heat-sealing film 7. During the implementation process, the shear force sensor is a pressure sensor. The above structure does not require the shear force sensor to reciprocate at high speed with the cutting and sealing blade, which improves the accuracy of shear force measurement and enhances the durability of the shear force sensor.

[0055] Furthermore, the measurement information processing unit 6 is provided with a shear force processing module, which is configured to receive the shear force measurement values ​​of the left shear force sensor 23a and the right shear force sensor 23b during a single cutting and sealing process and perform difference calculation. When it is calculated that the shear force difference during a single cutting and sealing process exceeds a set range, the measurement information processing unit 6 outputs shear force alarm information to the outside.

[0056] During the implementation, a knife seat 24 is provided between the movable rod of the shear cylinder and the cutting and sealing blade 25, and a blade mounting groove is provided on the top surface of the knife seat 24. The cutting and sealing blade 25 is installed in the blade mounting groove in an adjustable position, and the two ends of the blade mounting groove are provided with a left adjusting screw 26a and a right adjusting screw 26b for respectively adjusting the protruding height of the two ends of the cutting and sealing blade 25. When the measurement information processing unit 6 calculates that the shear force at the two ends of the cutting and sealing blade exceeds the set range, a shear force alarm message is output externally. If it is found that the shear force of the cutting and sealing blade 25 is inconsistent in the width direction of the heat-sealing film 7 due to the deflection of the blade of the cutting and sealing blade 25, the operator can stop the machine and adjust the height of the left adjusting screw 26a and the right adjusting screw 26b respectively, thereby adjusting the protruding height of the two ends of the cutting and sealing blade 25, correcting the deflection of the blade, and achieving the uniformity of the shear force of the cutting and sealing blade 25 in the width direction of the entire heat-sealing film.

[0057] Embodiment three:

[0058] like Figure 4 , Figure 8 and Fig. 9 As shown, on the basis of Example 1 and Example 2, the structure of the heat-sealing seat is optimized to provide space for the cutting and sealing blade to extend into and realize complete shearing of the heat-sealing film. Specifically: the heat-sealing seat includes an upper heat-sealing seat 53 and a lower heat-sealing seat 31 which are vertically opposite to each other, the upper heat-sealing seat 53 is connected to the movable rod of the heat-sealing cylinder, the lower heat-sealing seat 31 is arranged on the lower machine base 1 and is vertically opposite to the upper heat-sealing seat 53, the lower machine base 1 is provided with a transverse through-hole through which the cutting and sealing blade 25 passes, the lower heat-sealing seat 31 includes two symmetrically arranged on both sides of the transverse through-hole, the lower end of the movable rod of the heat-sealing cylinder is provided with a movable seat 52 which is arranged opposite to the transverse through-hole, the upper heat-sealing seat includes two symmetrically arranged on both sides of the movable seat 52, and a space for accommodating the front end of the cutting and sealing blade 25 to enter is formed between the movable seat 52 and the upper heat-sealing seat.

[0059] The hot-pressing cylinders include a left hot-pressing cylinder 51a and a right hot-pressing cylinder 51b, wherein the left hot-pressing cylinder 51a is arranged at the left end of the upper machine base 4 and the movable rod is connected to the left end of the movable seat 52, and the right hot-pressing cylinder 51b is arranged at the right end of the upper machine base 4 and the movable rod is connected to the right end of the movable seat 52. By applying forces respectively by the two hot-pressing cylinders, the balance of the pressure applied to the heat-sealed film by both ends of the hot-pressing seat can be improved.

[0060] In some preferred embodiments, the temperature sensor includes a left temperature sensor 32a and a right temperature sensor 32b, wherein the left temperature sensor 32a is arranged near the left end of the lower heat-sealing press seat 31 and is configured to measure the temperature of the left end during the cutting and sealing process, and the right temperature sensor 32b is arranged near the right end of the lower heat-sealing press seat 31 and is configured to measure the temperature of the right end during the cutting and sealing process. Further, the measurement information processing unit 6 is provided with a temperature processing module, which is configured to receive the temperature measurement values ​​of the left temperature sensor 32a and the right temperature sensor 32b during a single cutting and sealing process and perform a difference calculation. When the temperature difference value of the single cutting and sealing process calculated exceeds the set range, the measurement information processing unit 6 outputs a temperature alarm message to the outside. The left temperature sensor 32a and the right temperature sensor 32b can respectively measure the temperature values ​​at both ends of the lower heat-sealing press seat 31, so that it is possible to timely find out whether the two ends of the heat-sealing film 7 in the width direction are balanced, and send out an alarm message when the temperature difference value at both ends exceeds the set range, so that the staff can quickly find the temperature imbalance problem.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tobacco packaging machine sealing and cutting shear force measuring device, characterized in that: include: The upper machine base (4) and the lower machine base (1) are arranged at a vertical interval at the cutting and sealing station of the packaging machine, and the heat-sealing film (7) wrapping the tobacco leaf product passes through the gap between the upper machine base (4) and the lower machine base (1); A shearing unit, comprising a shearing cylinder and a cutting and sealing blade (25), wherein the shearing cylinder is arranged on a lower machine base (1) and a movable rod extends vertically upward, the cutting and sealing blade (25) is connected to the movable rod of the shearing cylinder, and the shearing unit is provided with a shearing force sensor for measuring the shearing force value during the cutting and sealing process; The heat-sealing unit comprises a heat-pressing cylinder and a heat-sealing press seat, wherein the heat-pressing cylinder is arranged on an upper machine seat (4) and a movable rod extends vertically downward, a temperature-adjustable heating mechanism is connected to the heat-sealing press seat by thermal conduction, and the heat-pressing unit is provided with a temperature sensor for measuring the temperature value during the cutting and sealing process; as well as The measurement information processing unit (6) is connected to the shear force sensor and the temperature sensor signals and is configured to receive and process the shear force measurement value and the temperature measurement value of the sealing and cutting process.

2. The sealing and cutting shear force measuring device of tobacco packaging machine according to claim 1, characterized in that: The shearing cylinder comprises a left shearing cylinder (22a) and a right shearing cylinder (22b); the lower machine base (1) is provided with a transverse through hole through which the cutting and sealing blade (25) passes; a left U-shaped frame (21a) and a right U-shaped frame (21b) are symmetrically provided at the bottom of the lower machine base (1) at both ends of the transverse through hole; the left shearing cylinder (22a) is supported by the left U-shaped frame (21a) and is drivingly connected to the left end of the cutting and sealing blade (25); and the right shearing cylinder (22b) is supported by the right U-shaped frame (21b) and is drivingly connected to the right end of the cutting and sealing blade (25).

3. The sealing and cutting shear force measuring device of tobacco packaging machine according to claim 2, characterized in that: The shear force sensor comprises a left shear force sensor (23a) and a right shear force sensor (23b), wherein the left shear force sensor (23a) is configured to measure the shear force on the left end of the cutting and sealing blade (25) borne by the movable rod of the left shear cylinder (22a), and the right shear force sensor (23b) is configured to measure the shear force on the right end of the cutting and sealing blade (25) borne by the movable rod of the right shear cylinder (22b).

4. The sealing and cutting shear force measuring device of tobacco packaging machine according to claim 3, characterized in that: The measurement information processing unit (6) is provided with a shear force processing module, and is configured to receive the shear force measurement values ​​of the left shear force sensor (23a) and the right shear force sensor (23b) during a single cutting and sealing process and perform difference calculation. When the shear force difference during the single cutting and sealing process is calculated to exceed a set range, the measurement information processing unit (6) outputs shear force alarm information to the outside.

5. The sealing and cutting shear force measuring device of tobacco packaging machine according to claim 3, characterized in that: The left U-shaped frame (21a) and the right U-shaped frame (21b) are open upward and have a mounting hole at the center of the bottom. The cylinder body of the left shearing cylinder (22a) / right shearing cylinder (22b) passes through the mounting hole and extends downward. The movable rod extends from the upper end of the cylinder body and is respectively connected to the left and right ends of the cutting and sealing blade (25). The left shear force sensor (23a) is arranged between the bottom center of the left U-shaped frame (21a) and the top of the cylinder body of the left shearing cylinder (22a), and the right shear force sensor (23b) is arranged between the bottom center of the right U-shaped frame (21b) and the top of the cylinder body of the right shearing cylinder (22b).

6. The sealing and cutting shear force measuring device of tobacco packaging machine according to claim 5, characterized in that: A knife seat (24) is arranged between the movable rod of the shear cylinder and the cutting and sealing blade (25), and a blade mounting groove is arranged on the top surface of the knife seat (24). The cutting and sealing blade (25) is installed in the blade mounting groove in an adjustable manner, and a left adjusting screw (26a) and a right adjusting screw (26b) are arranged at both ends of the blade mounting groove for respectively adjusting the protruding height of the two ends of the cutting and sealing blade (25).

7. The sealing and cutting shear force measuring device for tobacco packaging machine according to claim 1, 2 or 5, characterized in that: The heat-sealing seat comprises an upper heat-sealing seat (53) and a lower heat-sealing seat (31) which are arranged vertically opposite to each other. The upper heat-sealing seat (53) is connected to the movable rod of the heat-pressing cylinder. The lower heat-sealing seat (31) is arranged on the lower machine base (1) and is arranged vertically opposite to the upper heat-sealing seat (53). The lower machine base (1) is provided with a transverse through-hole through which the cutting and sealing blade (25) passes. The lower heat-sealing seat (31) comprises two movable seats (52) which are symmetrically arranged on both sides of the transverse through-hole. The lower end of the movable rod of the heat-pressing cylinder is provided with a movable seat (52) which is arranged opposite to the transverse through-hole. The upper heat-sealing seat comprises two movable seats (52) which are symmetrically arranged on both sides of the movable seat (52). A space for accommodating the front end of the cutting and sealing blade (25) is formed between the movable seat (52) and the upper heat-pressing seat.

8. The sealing and cutting shear force measuring device for tobacco packaging machine according to claim 7, characterized in that: The temperature sensor comprises a left temperature sensor (32a) and a right temperature sensor (32b), wherein the left temperature sensor (32a) is arranged near the left end of the lower heat sealing seat (31) and is configured to measure the left end temperature of the cutting and sealing process, and the right temperature sensor (32b) is arranged near the right end of the lower heat sealing seat (31) and is configured to measure the right end temperature of the cutting and sealing process.

9. The sealing and cutting shear force measuring device of a tobacco packaging machine according to claim 8, characterized in that: The measurement information processing unit (6) is provided with a temperature processing module, and is configured to receive temperature measurement values ​​of the left temperature sensor (32a) and the right temperature sensor (32b) during a single cutting and sealing process and perform difference calculation; when the calculated temperature difference during the single cutting and sealing process exceeds a set range, the measurement information processing unit (6) outputs temperature alarm information externally.

10. The sealing and cutting shear force measuring device of a tobacco packaging machine according to claim 7, characterized in that: The hot-pressing cylinder comprises a left hot-pressing cylinder (51a) and a right hot-pressing cylinder (51b); the left hot-pressing cylinder (51a) is arranged at the left end of the upper machine base (4) and a movable rod is connected to the left end of the movable base (52); the right hot-pressing cylinder (51b) is arranged at the right end of the upper machine base (4) and a movable rod is connected to the right end of the movable base (52).

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