An automated film bag making machine

Abstract

The present invention relates to the technical field of bag-making equipment, and in particular to an automatically controlled film bag-making machine, comprising a frame, a heat-sealing assembly and a flattening assembly, wherein the heat-sealing assembly is arranged at a preset position of the frame, and the heat-sealing assembly is used to heat-seal the sealing part of the film, and the flattening assembly is arranged at a preset position of the frame, and the flattening assembly is located above the heat-sealing assembly, and the flattening assembly comprises a lifting plate, a side pressure plate and an intermediate pressure plate, and the lifting plate is slidingly arranged on the frame. The present invention is provided with a flattening assembly, and when the sealing part of the film moves to the heat-sealing position, a force is applied to the film toward both sides thereof by the two side pressure plates moving away from each other. If wrinkles are formed on the film at the sealing part, the force exerted on the film by the sponge layer corresponding to the side pressure plate is conducive to promoting the unfolding of the wrinkles, so that when heat sealing is performed next, the sealing part is not prone to problems such as loose bonding and low load bearing of the sealing line.

Description

Technical Field

[0001] The present invention relates to the technical field of bag making equipment, in particular to an automatically controlled film bag making machine. Background Art

[0002] Plastic film bag making machine is a kind of equipment used to process plastic film into plastic bags of various specifications. It is widely used in the packaging field of many industries such as food, chemical, medicine and daily necessities.

[0003] The plastic film bag making machine mainly consists of an unwinding device, a heating device, a heat-sealing device, and a cutting device. When in use, the unwinding device first unwinds the rolled plastic film to provide continuous material for subsequent processing. The heating device is used to heat and soften the plastic film fed by the unwinding device. The heat-sealing device is used to heat the sealing part of the softened plastic film, causing the film to melt. Then, under the action of pressure, two or more layers of plastic film are bonded together, forming a strong sealing line after cooling. After sealing is completed, the cutting device cuts the continuous plastic film into individual plastic bags, thus completing the production of plastic bags.

[0004] During the process of winding the plastic film onto the winding device, wrinkles may appear on the plastic film due to its multi-layer film structure. If the wrinkles are located at the sealing part of the plastic film, it is very easy to cause the sealing part of the plastic film to be loose, and the maximum bearing load of the sealing line is significantly reduced. Summary of the Invention

[0005] Based on this, it is necessary to provide an automated film bag making machine to address the problems existing in the current plastic bag making machines, so as to solve the problems that the plastic bags produced by the existing plastic film bag making machines are prone to loose sealing parts and low sealing line load-bearing capacity.

[0006] The above purpose is achieved through the following technical solutions:

[0007] An automated film bag making machine comprises:

[0008] frame;

[0009] The heat sealing component is arranged at a preset position of the frame and is used to heat seal the sealing part of the film;

[0010] A flattening assembly is provided at a preset position of the frame and is located above the heat sealing assembly;

[0011] The flattening assembly includes a lifting plate, a side pressure plate and an intermediate pressure plate. The lifting plate is slidably arranged on the frame and can reciprocate in the vertical direction. The intermediate pressure plate is arranged at the middle position of the bottom of the lifting plate. There are two side pressure plates, which are elastically connected to the two sides of the bottom of the lifting plate respectively. The side pressure plates and the intermediate pressure plates are slidably matched through inclined surfaces. The bottoms of the intermediate pressure plates and the side pressure plates are both provided with sponge layers.

[0012] In the initial state, the bottom height of the side pressure plate is lower than the bottom height of the middle pressure plate.

[0013] Preferably, the flattening assembly further includes a first driving member, and the first driving member is used to drive the lifting plate to move back and forth in a vertical direction.

[0014] Preferably, the heat sealing assembly includes a first rotating shaft, an insulating sleeve and a heat sealing strip, wherein the first rotating shaft is rotatably arranged on the frame and can rotate around its axis, the insulating sleeve is fixedly sleeved on the outside of the first rotating shaft, and there are multiple heat sealing strips, which are circumferentially and evenly spaced on the outside of the insulating sleeve. When the heat sealing strips face the sponge layer, the heat sealing strips can be energized to generate heat;

[0015] The rotation speed of the first rotating shaft is configured so that each time the lifting plate reciprocates once, the first rotating shaft rotates circumferentially by a preset angle so that the heat sealing strip facing the flattening assembly can be switched.

[0016] Preferably, the heat sealing assembly further comprises a first reed and a second reed, the first reed being provided on the frame and externally connected to an electric current, and the second reed being provided in plurality, the plurality of second reeds corresponding one to one to the plurality of heat sealing strips, and the second reed being provided on one side of the heat sealing strip;

[0017] When the heat sealing strip rotates to face the sponge layer, the second reed corresponding to the heat sealing strip and the first reed are pressed against each other.

[0018] Preferably, the heat sealing assembly further includes a second driving member, and the second driving member is used to drive the first rotating shaft to rotate circumferentially.

[0019] Preferably, there are two insulating sleeves, which are arranged side by side along the axis of the first rotating shaft and fixedly sleeved on the outside of the first rotating shaft. A pressure detection element is provided at the connection between the two insulating sleeves and the first rotating shaft, and the pressure detection element is used to detect the pressure value between the first rotating shaft and the insulating sleeve;

[0020] The heat sealing assembly further includes an indicator light, which is connected to the pressure detection element signal;

[0021] When the pressure difference detected by the two pressure detection elements is greater than the set value, the indicator light comes on.

[0022] Preferably, the pressure detection element is electrically connected to a controller that controls the magnitude of the external current of the first reed;

[0023] When the pressure value detected by the pressure detection element is greater than a first preset value, reducing the current intensity;

[0024] When the pressure value detected by the pressure detection element is less than a second preset value, increasing the current intensity;

[0025] The first preset value is greater than the second preset value.

[0026] Preferably, the automatically controlled film bag making machine further comprises a material guiding assembly, which is used to pull the film toward the location of the heat sealing assembly.

[0027] Preferably, the material guide assembly includes a lower guide roller and an upper guide roller, the lower guide roller is rotatably arranged on the frame, and the lower guide roller can rotate around its axis, the two ends of the upper guide roller are elastically arranged on the frame, and the upper guide roller can approach or move away from the lower guide roller in the vertical direction.

[0028] Preferably, an automatically controlled film bag making machine further comprises a film pressing roller, which is rotatably arranged on the frame and is used to roll the film before it reaches the material guiding assembly.

[0029] The beneficial effects of the present invention are:

[0030] The present invention is provided with a flattening component. When the sealing part of the film moves to the heat-sealing position, the two side pressure plates move away from each other and apply a force to the film toward its two sides. If wrinkles are formed on the film at the sealing part, the force exerted on the film by the sponge layer corresponding to the side pressure plate is conducive to promoting the unfolding of the wrinkles. In this way, when heat sealing is performed next, the sealing part is less likely to have problems such as loose bonding and low load-bearing capacity of the sealing line. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall schematic diagram of an automated film bag making machine according to the present invention;

[0032] Figure 2 A top view of an automated film bag making machine according to the present invention;

[0033] Figure 3 for Figure 2 Middle AA section view;

[0034] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0035] Figure 5 for Figure 2 Middle BB cross-section;

[0036] Figure 6 for Figure 5Schematic diagram of the enlarged structure at D in the middle;

[0037] Figure 7 for Figure 6 Schematic diagram of the flattening component in working state in the perspective;

[0038] Figure 8 This is a structural schematic diagram of a first driving member in an automated film bag making machine of the present invention;

[0039] Figure 9 for Figure 8 Schematic diagram of the enlarged structure at E in the middle;

[0040] Figure 10 The present invention is a structural schematic diagram of an insulating sleeve in an automatically controlled film bag making machine.

[0041] in:

[0042] 100, rack;

[0043] 200, heat sealing assembly; 210, first rotating shaft; 220, insulating sleeve; 230, heat sealing strip; 240, second driving member; 241, driving motor; 242, side connecting plate; 250, first reed; 260, second reed;

[0044] 300, flattening assembly; 310, lifting plate; 320, side pressure plate; 321, first bayonet; 330, intermediate pressure plate; 331, bayonet hole; 332, second bayonet; 340, sponge layer; 350, first driving member; 351, second rotating shaft; 352, eccentric wheel; 353, connecting frame; 360, reset plate; 370, intermediate pin; 380, top plate;

[0045] 400, material guide assembly; 410, lower guide roller; 420, upper guide roller;

[0046] 500, lamination roller;

[0047] 600. Film. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] like Figures 1 to 10 As shown, an automated film bag making machine includes a frame 100, a heat sealing assembly 200 and a flattening assembly 300. The heat sealing assembly 200 is arranged at a preset position of the frame 100. The heat sealing assembly 200 is used to heat-seal the sealing portion of the film 600. The flattening assembly 300 is arranged at a preset position of the frame 100, and the flattening assembly 300 is located above the heat sealing assembly 200. The flattening assembly 300 includes a lifting plate 310, a side pressure plate 320 and an intermediate pressure plate 330. The lifting plate 310 is slidably arranged on the frame 100, and the lifting plate 310 can reciprocate in the vertical direction. The intermediate pressure plate 330 is arranged at the bottom middle position of the lifting plate 310 The cam 330 is pressed against the top of the lifting plate 310 so that the lifting plate 310 can be lifted up and down, thereby effectively preventing the lifting plate 310 from sliding onto the lifting plate 310.

[0052] During use, the staff makes the film 600 move at a constant speed from left to right on the frame 100. When the sealing part of the film 600 moves to the upper position of the heat sealing assembly 200, the film 600 stops moving to the right. Next, the staff makes the lifting plate 310 move downward in the vertical direction from the initial state. At this time, the lifting plate 310 drives the middle pressure plate 330 to move downward synchronously. Since the two side pressure plates 320 are elastically connected to the two sides of the bottom of the lifting plate 310, the lifting plate 310 also drives the two side pressure plates 320 to move downward. Since the bottom surface height of the side pressure plate 320 is lower than the bottom surface height of the middle pressure plate 330 in the initial state , Therefore, before the side pressure plate 320 moves downward to the point where the corresponding sponge layer 340 contacts the film 600, its bottom surface height is always lower than the bottom surface height of the middle pressure plate 330. When the lifting plate 310 moves downward to the point where the sponge layer 340 corresponding to the side pressure plate 320 contacts the film 600 and rests against the frame 100, as the lifting plate 310 continues to move downward, under the guiding action of the inclined surface between the side pressure plate 320 and the middle pressure plate 330, the two side pressure plates 320 move upward and also move to both sides of the lifting plate 310. Since the two side pressure plates 320 move to both sides of the lifting plate 310 at the same time, the seawater corresponding to the two side pressure plates 320 is The sponge layer 340 applies a force to the film 600 in the direction toward both sides of the lifting plate 310. If wrinkles are formed on the film 600 at the sealing portion, the force applied to the film 600 by the sponge layer 340 corresponding to the side pressure plate 320 is conducive to causing the wrinkles to unfold. In this way, when heat sealing is performed next, the sealing portion is less likely to have problems such as loose bonding and low load bearing of the sealing line. In the process of the side pressure plate 320 moving toward both sides of the lifting plate 310, the sponge layer 340 corresponding to the middle pressure plate 330 also gradually contacts the film 600. When the side pressure plate 320 stops moving toward both sides of the lifting plate 310, the side pressure plate 320 and the middle pressure plate The sponge layer 340 corresponding to 330 is in contact with the film 600 at the same time, and the compression amount of the sponge layer 340 is the same. Next, the heat sealing component 200 is started, and the sealing part of the film 600 is heated by the heat sealing component 200, so that the sealing part of the film 600 is bonded together. At this time, the heat sealing of the sealing part of the film 600 is completed, and then the lifting plate 310 is reset to the initial position upward. Finally, the film 600 continues to move from left to right at a uniform speed until the next sealing part of the film 600 moves to the heat sealing position below the flattening component 300. Then repeat the above steps to complete the heat sealing of the next sealing part of the film 600.

[0053] It should also be noted that if Figure 5 and Figure 6As shown, in order to enable the side pressure plate 320 to reset to its initial state when moving with the lifting plate 310, a reset plate 360 ​​is provided on the inner side of the lifting plate 310, and inclined surfaces are provided on both sides of the reset plate 360 ​​and the intermediate pressure plate 330 where they slide in contact. An intermediate pin 370 is provided at the top center of the reset plate 360, and the intermediate pin 370 and the lifting plate 310 are elastically connected by a spring. A top plate 380 is provided on the frame 100 and directly above the intermediate pin 370. A first latch 321 is elastically connected to the side pressure plate 320, and a latch hole 331 is provided on the intermediate pressure plate 330, and a second latch 332 is slidably connected to the latch hole 331. When the middle pressure plate 330 moves downward relative to the side pressure plate 320 until the first pin 321 is coaxial with the hole 331, the first pin 321 extends into the hole 331. Therefore, when the lifting plate 310 moves upward, the side pressure plate 320 and the middle pressure plate 330 move upward synchronously through the first pin 321. When the lifting plate 310 moves upward until the middle pin 370 is against the top plate 380, the reset plate 360 ​​moves downward relative to the middle pressure plate 330. At this time, under the action of the inclined surfaces on both sides of the reset plate 360, the second pin 332 pushes the first pin 321 out of the hole 331. At this time, under the action of the spring force between the side pressure plate 320 and the lifting plate 310, the side pressure plate 320 slides downward and dislocates, so that the side pressure plate 320 and the middle pressure plate 330 return to their initial state.

[0054] In a further embodiment, Figure 1 、 Figure 3 and Figure 6 As shown, the flattening assembly 300 also includes a first driving member 350, which is used to drive the lifting plate 310 to reciprocate in the vertical direction. Specifically, the first driving member 350 includes a second rotating shaft 351, an eccentric wheel 352 and a connecting frame 353. The second rotating shaft 351 is rotatably connected to the frame 100. The frame 100 is also provided with a first motor, the output shaft of the first motor is fixedly connected to the second rotating shaft 351, the eccentric wheel 352 is eccentrically connected to the second rotating shaft 351, and the connecting frame 353 is square. The top of the connecting frame 353 is fixedly connected to the lifting plate 310, and the two sides of the connecting frame 353 are slidably connected to the frame 100, so that the connecting frame 353 is limited to be able to move only in the vertical direction. The inner side of the connecting frame 353 is slidably connected to the eccentric wheel 352, so that the eccentric rotation of the eccentric wheel 352 can drive the connecting frame 353 to reciprocate in the vertical direction.

[0055] When the lifting plate 310 needs to move back and forth in the vertical direction, the first motor is started, and the output shaft of the first motor drives the second rotating shaft 351 to rotate synchronously. The second rotating shaft 351 drives the eccentric wheel 352 to rotate eccentrically. The eccentric rotation of the eccentric wheel 352 drives the connecting frame 353 to move back and forth in the vertical direction. Then, the connecting frame 353 drives the lifting plate 310 to move synchronously, thereby causing the lifting plate 310 to move back and forth in the vertical direction.

[0056] In a further embodiment, Figure 3 and Figure 4 As shown, the heat sealing assembly 200 includes a first rotating shaft 210, an insulating sleeve 220 and a heat sealing strip 230. The first rotating shaft 210 is rotatably set on the frame 100, and the first rotating shaft 210 can rotate around its axis. The insulating sleeve 220 is fixedly sleeved on the outside of the first rotating shaft 210. There are multiple heat sealing strips 230, and the multiple heat sealing strips 230 are circumferentially evenly spaced on the outside of the insulating sleeve 220. When the heat sealing strip 230 is facing the sponge layer 340, the heat sealing strip 230 can be energized to generate heat.

[0057] The reason why multiple heat sealing strips 230 are arranged at equal intervals in the circumferential direction of the outer side of the insulating sleeve 220 is to rotate the heat sealing strip 230 after being energized and generating heat to a position where it is no longer energized through the rotation of the first rotating shaft 210. At this time, the heat sealing strip 230 can be cooled and dissipated. At the same time, the rotation of the first rotating shaft 210 also causes the heat sealing strip 230 after cooling and dissipating heat to rotate to the energized position. Compared with only setting a single heat sealing strip 230, the present invention arranges multiple heat sealing strips 230 at equal intervals in the circumferential direction on the insulating sleeve 220, so there is no need to stop the machine to wait for the heat sealing strip 230 to cool down, thereby improving production efficiency.

[0058] In the initial state, the multiple heat sealing strips 230 are all at positions not facing the sponge layer 340, that is, the multiple heat sealing strips 230 are not powered. When in use, the staff moves the film 600 from left to right at a preset speed. When the sealing part of the film 600 moves to the heat sealing position below the flattening component 300, the film 600 stops moving. Next, the lifting plate 310 moves vertically from top to bottom, so that the side pressure plates 320 and the middle pressure plate 330 flatten the sealing part of the film 600 through the sponge layer 340. When the lifting plate 310 moves to the lower limit position, the sealing part of the film 600 is flattened. After the first rotating shaft 210 is set, the lifting plate 310 stops moving, and then the first rotating shaft 210 rotates the first preset angle first, so that the heat sealing strip 230 closest to the sponge layer 340 rotates to face the sponge layer 340. At this time, the heat sealing strip 230 is energized to generate heat to heat-seal the sealing part of the film 600. After 1-2 seconds, the first rotating shaft 210 rotates the second preset angle again, so that the multiple heat sealing strips 230 are rotated to the position where no power is supplied. At the same time as the first rotating shaft 210 rotates the second preset angle, the lifting plate 310 moves upward to the initial position, and the film 600 continues to be sealed. The preset speed moves from left to right until the next sealing part of the film 600 moves to the heat sealing position below the flattening component 300. At this time, the film 600 stops moving again. Next, the lifting plate 310 moves from top to bottom in the vertical direction, so that the side pressure plates 320 and the middle pressure plate 330 flatten the sealing part of the film 600 through the sponge layer 340. After the lifting plate 310 moves to the lower limit position, the lifting plate 310 stops moving. Next, the first rotating shaft 210 rotates to the first preset angle first. At this time, the heat sealing strip 230 facing the sponge layer 340 is pressed against the film 600. 0 is switched, at this time, the heat sealing strip 230 is energized to generate heat to heat-seal the sealing part of the film 600, and after 1-2 seconds, the first rotating shaft 210 rotates to the second preset angle again, so that the multiple heat sealing strips 230 are rotated to the initial state again, that is, the multiple heat sealing strips 230 are in the non-energized state. At the same time as the first rotating shaft 210 rotates to the second preset angle, the lifting plate 310 also moves upward to the initial position, and the film 600 continues to move from left to right at the preset speed. Then the above steps are repeated until the multiple sealing parts of the film 600 are all heat-sealed.

[0059] It should also be noted that if Figure 9As shown, in order to enable the heat sealing strip 230 to be powered and generate heat when facing the sponge layer 340, specifically, the heat sealing assembly 200 also includes a first reed 250 and a second reed 260. The first reed 250 is arranged on the frame 100, and the first reed 250 is externally connected to the current. There are multiple second reeds 260, and the multiple second reeds 260 correspond one-to-one to the multiple heat sealing strips 230, and the second reeds 260 are arranged on one side of the heat sealing strip 230. When the heat sealing strip 230 is rotated to face the sponge layer 340, the second reed 260 corresponding to the heat sealing strip 230 and the first reed 250 are pressed against each other.

[0060] In a further embodiment, Figure 8 and Figure 9 As shown, the heat sealing assembly 200 also includes a second driving member 240, which is used to drive the first rotating shaft 210 to rotate circumferentially. The second driving member 240 includes a driving motor 241 and a side connecting plate 242. The side connecting plate 242 is arranged on the frame 100, and the driving motor 241 is arranged on the side connecting plate 242, and the output shaft of the driving motor 241 is fixedly connected to the first rotating shaft 210.

[0061] During use, the driving motor 241 is started, and the output shaft of the driving motor 241 drives the first rotating shaft 210 to rotate, thereby causing the first rotating shaft 210 to rotate around its own axis.

[0062] In order to make the film 600 move from left to right at a preset speed on the frame 100, in a further embodiment, as shown in FIG. Figure 1 and Figure 3 As shown, the automatically controlled film bag making machine also includes a material guide component 400, which is used to pull the film 600 to the position of the heat sealing component 200. The material guide component 400 also includes a lower guide roller 410 and an upper guide roller 420. The lower guide roller 410 is rotatably set on the frame 100, and the lower guide roller 410 can rotate around its axis. Specifically, a second motor is provided on the frame 100, and the output shaft of the second motor is fixedly connected to the first pulley. One end of the lower guide roller 410 is fixedly connected to the second pulley, and the second pulley is belt-connected to the first pulley. Both ends of the upper guide roller 420 are elastically provided on the frame 100, and the upper guide roller 420 can approach or move away from the lower guide roller 410 in the vertical direction.

[0063] When in use, start the second motor, the output shaft of the second motor drives the first pulley to rotate, the first pulley rotates the second pulley through the belt, and the second pulley drives the lower guide roller 410 to rotate. Since the film 600 is clamped between the lower guide roller 410 and the upper guide roller 420, and the two ends of the upper guide roller 420 are elastically arranged on the frame 100, there is a certain positive pressure between the lower guide roller 410 and the upper guide roller 420 and the film 600. Therefore, there is sufficient friction between the lower guide roller 410 and the film 600, so that the circumferential rotation of the lower guide roller 410 pulls the film 600 from left to right at a uniform speed.

[0064] If it is necessary to still roll up the film 600 after the sealing part is sealed, in a further embodiment, the right side of the film 600 is wound on the receiving roller, and the start and stop of the receiving roller are synchronized with the start and stop of the lower guide roller 410, and the winding line speed of the receiving roller is the same as the rotation line speed of the lower guide roller 410, so that the film 600 can still be rolled up after the sealing part is sealed.

[0065] If the plastic bags made from the film 600 need to be separated from each other one by one, in a further embodiment, the linear speed of the circumferential profile of the heat sealing strip 230 is slightly greater than the linear speed of the lower guide roller 410, so that the film 600 on the right side of the heat sealing portion moves synchronously with the heat sealing strip 230 bonded thereto, while the film 600 on the left side of the heat sealing portion still moves under the traction of the lower guide roller 410. Under the action of the differential speed, the tension exerted on the film 600 on the left side of the heat sealing portion will gradually increase with the differential time. When the tension exerted on the film 600 on the left side of the heat sealing portion increases to a level greater than the bonding force between the heat sealing strip 230 and the film 600, the film 600 on the left side of the heat sealing portion and the film 600 on the right side of the heat sealing portion are separated from each other. At this time, the film 600 on the right side falls from the frame 100, so that the plastic bags made from the film 600 are separated from each other one by one.

[0066] It is understandable that if the degree of adhesion of the sealing portion of the film 600 is inconsistent at various locations along its length, the bonding force between the corresponding heat sealing strip 230 and the film 600 will be inconsistent. When the linear speed of the lower guide roller 410 differs from the linear speed of the circumferential profile where the heat sealing strip 230 is located, the film 600 will tilt along its length. This will cause the sealing portion of the subsequent film 600 to shift when heat-sealed at the heat-sealing position. To solve this problem, in a further embodiment, as shown in FIG. Figure 10As shown, there are two insulating sleeves 220, which are arranged side by side along the axis of the first rotating shaft 210 and fixedly sleeved on the outside of the first rotating shaft 210. Pressure detection elements are provided at the connection between the two insulating sleeves 220 and the first rotating shaft 210. The pressure detection elements are used to detect the pressure value between the first rotating shaft 210 and the insulating sleeves 220. The heat sealing assembly 200 also includes an indicator light, which is connected to the pressure detection element signal. When the pressure difference detected by the two pressure detection elements is greater than the set value, the indicator light lights up.

[0067] When the degree of adhesion of the sealed portion of the film 600 is inconsistent at various locations along its length, the bonding force between the heat seal strips 230 corresponding to the two insulating sleeves 220 and the film 600 is inconsistent. At this time, the pressure values ​​monitored by the pressure detection elements at the connection between the two insulating sleeves 220 and the first rotating shaft 210 differ. When the pressure values ​​detected by the two pressure detection elements are greater than the set value, the indicator light illuminates. At this time, the staff can check whether the surface of the heat seal strip 230 is clean. If there is a layer of adhesive on the surface of the heat seal strip 230, the adhesive layer on the surface of the heat seal strip 230 can be scraped off with a scraper. Then, the film 600 can be straightened and the equipment can be restarted. In a further embodiment, the pressure detection element is electrically connected to a controller that controls the current. When the pressure value detected by the pressure detection element is greater than a first preset value, the current intensity decreases. When the pressure value detected by the pressure detection element is less than a second preset value, the current intensity increases. The first preset value is greater than the second preset value.

[0068] When the pressure values ​​detected by the two pressure detection elements are greater than the first preset value, it means that the bonding force between the film 600 and the heat sealing strip 230 is relatively large. At this time, the current intensity can be reduced to reduce the subsequent heat generation of the heat sealing strip 230. In this way, the heat absorbed by the sealing part of the heat sealing strip 230 is reduced, and the subsequent melting amount of the sealing part of the heat sealing strip 230 is reduced, thereby preventing the bonding force between the film 600 and the heat sealing strip 230 from further increasing.

[0069] On the contrary, when the pressure values ​​detected by the two pressure detection elements are less than the second preset value, it means that the bonding force between the film 600 and the heat sealing strip 230 is relatively small. At this time, the current intensity can be increased to increase the subsequent heat generation of the heat sealing strip 230. In this way, the subsequent heat absorbed by the sealing part of the heat sealing strip 230 increases, and the subsequent melting amount of the sealing part of the heat sealing strip 230 increases. In this way, it is possible to prevent the bonding force between the film 600 and the heat sealing strip 230 from being too small, causing the sealing position of the film 600 to crack or the load-bearing load to decrease.

[0070] In a further embodiment, Figure 1As shown, the automatically controlled film bag making machine also includes a laminating roller 500, which is rotatably set on the frame 100. The laminating roller 500 is used to pre-flatten the film 600 before it reaches the material guide component 400 to prevent defects such as warping in some areas of the film 600.

[0071] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An automated film bag making machine, characterized in that: include: frame; The heat sealing component is arranged at a preset position of the frame and is used to heat seal the sealing part of the film; A flattening assembly is provided at a preset position of the frame and is located above the heat sealing assembly; The flattening assembly includes a lifting plate, a side pressure plate and an intermediate pressure plate. The lifting plate is slidably arranged on the frame and can reciprocate in the vertical direction. The intermediate pressure plate is arranged at the middle position of the bottom of the lifting plate. There are two side pressure plates, which are elastically connected to the two sides of the bottom of the lifting plate respectively. The side pressure plates and the intermediate pressure plates are slidably matched through inclined surfaces. The bottoms of the intermediate pressure plates and the side pressure plates are both provided with sponge layers. In the initial state, the bottom height of the side pressure plate is lower than the bottom height of the middle pressure plate; the heat sealing assembly includes a first rotating shaft, an insulating sleeve and a heat sealing strip, the first rotating shaft is rotatably arranged on the frame, and the first rotating shaft can rotate around its axis, the insulating sleeve is fixedly sleeved on the outside of the first rotating shaft, there are multiple heat sealing strips, and the multiple heat sealing strips are arranged on the outside of the insulating sleeve at equal intervals in the circumferential direction. When the heat sealing strip is facing the sponge layer, the heat sealing strip can be energized to generate heat.

2. The film bag making machine with automatic control according to claim 1, characterized in that: The flattening assembly further includes a first driving member, which is used to drive the lifting plate to move back and forth in a vertical direction.

3. The film bag making machine with automatic control according to claim 1, characterized in that: The heat sealing assembly further includes a first reed and a second reed, wherein the first reed is provided on the frame and is externally connected to an electric current, and the second reed is provided in plurality, and the plurality of second reeds correspond one to one with the plurality of heat sealing strips, and the second reed is provided on one side of the heat sealing strip; When the heat sealing strip rotates to face the sponge layer, the second reed corresponding to the heat sealing strip and the first reed are pressed against each other.

4. The film bag making machine with automatic control according to claim 3, characterized in that: The heat sealing assembly further includes a second driving member, which is used to drive the first rotating shaft to rotate circumferentially.

5. The automatic film bag making machine according to claim 4, characterized in that: There are two insulating sleeves, which are arranged side by side along the axis of the first rotating shaft and fixedly sleeved on the outside of the first rotating shaft. The connection between the two insulating sleeves and the first rotating shaft is provided with a pressure detection element, which is used to detect the pressure value between the first rotating shaft and the insulating sleeve; The heat sealing assembly further includes an indicator light, which is connected to the pressure detection element signal; When the pressure difference detected by the two pressure detection elements is greater than the set value, the indicator light comes on.

6. The automatic film bag making machine according to claim 5, characterized in that: The pressure detection element is electrically connected to a controller that controls the magnitude of the external current of the first reed; When the pressure value detected by the pressure detection element is greater than a first preset value, reducing the current intensity; When the pressure value detected by the pressure detection element is less than a second preset value, increasing the current intensity; The first preset value is greater than the second preset value.

7. The automated film bag making machine according to claim 1, characterized in that: It also includes a material guiding component, which is used for pulling the film to move toward the location of the heat sealing component.

8. The automated film bag making machine according to claim 7, characterized in that: The material guide assembly includes a lower guide roller and an upper guide roller. The lower guide roller is rotatably arranged on the frame and can rotate around its axis. Both ends of the upper guide roller are elastically arranged on the frame, and the upper guide roller can approach or move away from the lower guide roller in the vertical direction.

9. The automated film bag making machine according to claim 1, characterized in that: It also includes a film pressing roller, which is rotatably arranged on the frame and is used to roll the film before it reaches the material guiding component.

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