Automatic strip bag filling and edge sealing equipment and short environment-friendly strip bag

Abstract

The invention provides automatic strip bag filling and edge sealing equipment and short environment-friendly strip bags machined through the equipment, the equipment comprises an edge sealing device, a filling device, a traction device and a filling and edge sealing control device, the filling device is provided with a filling pipe and a filling lifting mechanism, the filling and edge sealing control device is provided with a process control unit, and the process control unit is connected with the traction device. After the edge sealing device finishes the edge sealing operation, the traction device pulls down the strip bag base material with the transverse sealing part, and the filling pipe correspondingly moves downwards for filling while pulling down, so that the whole strip bag base material is prevented from being pulled down after the filling is finished, and the problem that part of liquid is adhered to the inner wall of the strip bag base material above the liquid level is solved; according to the short environment-friendly strip bag, the edge can be sealed at the position closer to the liquid level, so that the strip bag package with a certain volume can contain liquid with a larger volume, and under the condition of the same content volume, the length of the short environment-friendly strip bag is obviously shorter, and the utilization rate of the internal space is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of filling equipment, and in particular relates to an automatic filling and edge sealing device for strip bags. Background Art

[0002] Back-seal strip bag packaging is a common packaging form that can be used to package a variety of contents, including granular or small-sized foods, gel-like foods, powdered granules and medicines, liquid drinks, etc. Back-seal strip bag packaging has the advantages of beautiful appearance, good portability, lower packaging cost than bottles and cans, and easier to achieve full light-shielding effect. In recent years, it has also been used to package sports energy drinks, etc. Back-seal strip bag packaging can be basically fully automatically made by strip bag filling and edge sealing equipment. The relevant equipment and processes are mature and the production efficiency is high.

[0003] However, the existing strip bag filling and edge sealing equipment also has shortcomings, especially when used for the filling of the above-mentioned sports energy drinks and similar liquids. When processing this type of equipment, a long cylindrical strip bag substrate is usually placed, and the equipment seals the middle section of the substrate horizontally, and then fills above the horizontal edge seal. After filling, the substrate is pulled down as a whole, and the substrate above the filled liquid is sealed again horizontally, so that a closed unit containing a certain amount of liquid is formed between two adjacent horizontal edge seals. After subsequent cutting, each unit forms a plurality of strip bag packaging products. Among them, when the substrate is pulled down as a whole at a relatively fast speed after filling, the liquid is prone to oscillation, and part of the liquid will adhere to the inner wall of the substrate above the liquid surface after filling. In order to ensure the sealing of the edge seal and the capacity of the liquid in the package, the liquid cannot be touched during the horizontal edge sealing. Therefore, a large height is usually reserved above the liquid surface, that is, there will be a large free space in the finished back-sealed strip bag packaging, and the space in the package cannot be fully utilized. Summary of the invention

[0004] The present invention is made to solve the above problems, and aims to provide an automatic filling and edge sealing device for strip bags with an optimized design that can fully utilize the space inside the strip bag packaging. The present invention adopts the following technical solutions:

[0005] The present invention provides an automatic filling and edge-sealing device for strip bags, which is used for filling and edge-sealing a cylindrical strip bag substrate to form a strip bag. The device has the following technical features: an edge-sealing device, which is used for sealing the middle section of the strip bag substrate to form a transverse sealing portion that separates the strip bag substrate; a filling device, which is used for filling the strip bag substrate; a traction device, which is used for traction of the strip bag substrate; and a filling and edge-sealing control device, which is used for controlling the edge-sealing device, the filling device and the traction device, wherein the filling device includes a filling tube and a filling lifting mechanism for driving the filling tube to rise and fall, and the filling and edge-sealing control device includes a process control unit, which is used for controlling the process of filling and edge-sealing, so that after the edge-sealing device completes the edge-sealing operation, the traction device pulls the strip bag substrate downward, and at the same time, the filling lifting mechanism drives the filling tube to move downward accordingly and fills the strip bag substrate above the uppermost transverse sealing portion, and resets after the filling is completed.

[0006] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, wherein the filling and edge sealing control device also includes: an edge sealing control unit, used to control the edge sealing device to perform edge sealing and reset; a filling control unit, used to control the filling lifting mechanism to drive the filling tube to move down a predetermined distance and perform filling, and then move up and reset; and a traction control unit, used to control the traction device to drive the strip bag substrate to move down a predetermined distance and reset, the process control unit controls the edge sealing control unit to start its control operation in each cycle, then waits for a first predetermined time, and then controls the filling control unit and the traction control unit to start their corresponding control operations, and then waits for a second predetermined time, ends the current cycle and enters the next cycle.

[0007] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, which further include: a cutting device for cutting the transverse sealing portion of the strip bag substrate after filling, so as to form a strip bag, wherein the filling and edge sealing control device further includes: a cutting control unit for controlling the cutting device to cut and reset the transverse sealing portion, the process control unit controls the edge sealing control unit and the cutting device to start their control operations in each cycle, then waits for a first predetermined time, and then controls the filling control unit and the traction control unit to start their corresponding control operations The process of claim 14 , wherein the first predetermined time period is greater than or equal to the longer of the edge sealing time period and the cutting time period, the time period for the traction device to perform traction and reset is the traction time period, the time period for the filling tube to move down, fill and reset is the filling time period, and the second predetermined time period is greater than or equal to the longer of the traction time period and the filling time period.

[0008] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, which also include: a liquid storage and supply device, including a liquid supply tube for supplying liquid to the filling tube, and one of the liquid supply tube and the filling tube is provided with a liquid supply control valve, wherein the filling control unit includes: a tube downward movement control unit, used to control the filling lifting mechanism to drive the filling tube to descend a predetermined distance at a predetermined speed; a valve opening control unit, used to control the liquid supply control valve to open after a first predetermined waiting time after the tube downward movement control unit starts its control operation; a valve closing control unit, used to control the liquid supply control valve to close after a predetermined filling time after the valve opening control unit starts its control operation; and a filling reset control unit, used to control the filling lifting mechanism to drive the filling tube to move up and reset after a second predetermined waiting time after the valve closing control unit completes its control operation.

[0009] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such a technical feature, wherein the first predetermined waiting time is less than the time it takes for the filling tube to descend from its reset position at the predetermined speed, the predetermined filling time corresponds to the predetermined filling capacity, and the second predetermined waiting time corresponds to the length of the filling tube.

[0010] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, wherein the traction device includes: a clamping fitting block; a clamping pressure block, which is arranged corresponding to the clamping fitting block and can move relative to it; a clamping drive cylinder, which is used to drive the clamping pressure block to move; and a traction lifting mechanism, which is used to drive the clamping fitting block, the clamping pressure block and the clamping drive cylinder to lift and lower, and the traction control unit includes: a clamping control unit, which is used to control the clamping drive cylinder to drive the clamping pressure block to press toward the clamping fitting block to clamp a lower section of the strip bag substrate. The horizontal sealing part; a pull-down control part, which is used to control the traction lifting mechanism to drive the clamping pressure block, the clamping matching block and the strip bag substrate clamped by them to move down a predetermined distance at a predetermined speed after the clamping control part completes its control operation; a release control part, which is used to control the clamping drive cylinder to drive the clamping pressure block to reset after the pull-down control part completes its control operation so as to release the strip bag substrate; and a traction reset control part, which is used to control the traction lifting mechanism to drive the clamping pressure block and the clamping matching block to move up and reset after the release control part completes its control operation.

[0011] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such a technical feature, wherein the pull-down control unit controls the traction lifting mechanism to drive the clamping pressure block and the clamping matching block to move downward at a first predetermined speed for a first predetermined downward movement time, and then controls the traction lifting mechanism to drive them to move downward at a second predetermined speed for a second predetermined downward movement time, the second predetermined speed is greater than the first predetermined speed, and the first predetermined speed is greater than or equal to the predetermined speed at which the filling tube moves downward.

[0012] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, wherein the cutting device includes: a cutting matching block; a cutting pressure block, which is arranged corresponding to the cutting matching block and can move relative to it; and a cutting drive cylinder, which is used to drive the cutting pressure block to move, and the cutting control unit is used to control the cutting drive cylinder to drive the cutting pressure block to press toward the cutting matching block, thereby cutting the transverse sealing part, and then control the cutting drive cylinder to drive the cutting pressure block to reset, the cutting pressure block has: an edge punching part, which is used to cut the transverse sealing part in the longitudinal direction and punch out the edge shape, so that the transverse sealing part becomes an edge sealing part located above and a sealing part located below; a tear opening punching part, which is used to punch a tear opening on one side of the sealing part; and a limiting hole punching part, which is used to punch a tear limiting hole corresponding to the tear opening in the transverse direction on one side of the sealing part.

[0013] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, wherein the lifting mechanism for filling includes: two electric slides, both of which are vertically arranged; a mounting plate, both ends of which are respectively fixed on the slide components of the two electric slides; a tube fixing assembly, which is arranged in the middle of the mounting plate and is used to fix the filling tube on the mounting plate, and the filling control unit is used to control the two electric slides to synchronously drive the mounting plate and the filling tube fixed thereon to rise and fall.

[0014] The automatic filling and edge sealing equipment for strip bags provided by the present invention may also have such technical features, which also include: a substrate supply device, used to place the rolled packaging material, and used to unroll and flatten the packaging material; and a longitudinal sealing device, used to roll the packaging material from the substrate supply device into a tube, overlap its two side edges and perform hot pressing, so as to form a continuous longitudinal sealing portion.

[0015] The present invention provides a short environmentally friendly strip bag, which has the following technical features: the short environmentally friendly strip bag is manufactured by the above-mentioned strip bag automatic filling and edge sealing equipment, and one end of the short environmentally friendly strip bag has a tear opening and a tear limiting hole arranged corresponding to the tear opening, so that the short environmentally friendly strip bag can remain as a whole after being torn from the tear opening, and compared with strip bags of the same type and with the same content capacity, the length of the short environmentally friendly strip bag is significantly shorter.

[0016] Functions and Effects of the Invention

[0017] The automatic filling and edge sealing equipment for strip bags according to the present invention comprises an edge sealing device, a filling device, a traction device and a filling and edge sealing control device, wherein the filling device has a filling tube and a filling lifting mechanism for driving the filling tube to lift and lower, and the filling and edge sealing control device has a process control unit, which controls the overall production and processing process, and after the edge sealing device completes the edge sealing operation, the traction device pulls down the strip bag substrate with the transverse sealing portion, and at the same time, the filling tube moves down accordingly for filling, so that it is possible to avoid pulling down the strip bag substrate as a whole after the filling is completed, and there will be no problem of part of the liquid adhering to the inner wall of the strip bag substrate above the liquid surface, so that the edge sealing can be performed at a position closer to the liquid surface, so that a larger volume of liquid can be accommodated in a strip bag package of a certain volume, and the space in the strip bag package is fully utilized, and for a certain volume of liquid content, the volume of the outer packaging is smaller, and the cost is relatively lower and the portability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 2 is a three-dimensional schematic diagram of an automatic filling and edge sealing device for strip bags according to an embodiment of the present invention;

[0019] Figure 22 is a schematic diagram of the structure of the strip bag substrate after edge sealing in an embodiment of the present invention;

[0020] Figure 3 is a logic block diagram of a filling and edge sealing control device in an embodiment of the present invention;

[0021] Figure 4 This is a flow chart of producing strip bags by the automatic strip bag filling and edge sealing equipment according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the short environmentally friendly strip bag in this embodiment.

[0023] Reference numerals:

[0024] Automatic filling and edge sealing equipment for strip bags 100; frame 110; liquid storage and supply device 120; liquid storage mechanism 121; liquid supply pipe 122; liquid supply control valve 123; filling device 130; filling pipe 131; filling lifting mechanism 132; electric slide 1321; mounting plate 1322; pipe fixing assembly 1323; pipe guiding mechanism 133; edge sealing device 140; edge sealing block 141; edge sealing matching block 142; heating mechanism 143; traction device 150; clamping block 151; clamping matching block 152; traction lifting mechanism 153; electric slide 1531; mounting plate 1532; cutting device 160; cutting block 161; cutting matching block 162; guiding device 170; filling and edge sealing control device 180; horizontal sealing control unit 181; horizontal sealing control unit 181 1; heating control unit 1812; transverse seal reset control unit 1813; filling control unit 182; tube downward movement control unit 1821; valve opening control unit 1822; valve closing control unit 1823; filling reset control unit 1824; traction control unit 183; clamping control unit 1831; pull-down control unit 1832; release control unit 1833; traction reset control unit 1834; cutting control unit 184; cutting control unit 1841; cutting reset control unit 1842; process control unit 185; short environmentally friendly strip bag 200; longitudinal sealing part 210; edge sealing part 220; sealing part 230; tear opening 231; tear limiting hole 232; retaining strip 233; accommodating cavity 240; main cavity part 241; end cavity part 242; strip bag substrate 300; transverse seal part 310. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the automatic strip bag filling equipment of the present invention is specifically described below in conjunction with embodiments and drawings.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] <Example>

[0028] This embodiment provides an automatic strip bag filling device for filling and sealing a strip bag substrate with liquid, thereby forming a strip bag product containing liquid. To facilitate the description of the structure and function of the device, the strip bag structure involved will be briefly described below.

[0029] Figure 5 It is a schematic diagram of the structure of the short environmentally friendly strip bag in this embodiment.

[0030] like Figure 5 As shown, the short environmentally friendly strip bag 200 is a flat long strip as a whole, and is a soft sealed packaging bag, which can be used to hold liquid beverages, cosmetics or daily necessities (such as shampoo), etc., which can be water-like or gel-like. In this embodiment, the short environmentally friendly strip bag 200 is used to hold an energy drink with a certain viscosity.

[0031] The short environmentally friendly strip bag 200 is formed by rolling up a whole piece of packaging sheet and then sealing the edges and the mouth. A long longitudinal sealing portion 210 is provided in the middle or on one side of one surface (back side). The longitudinal sealing portion 210 extends along the length direction of the strip bag 200, and its length is basically the same as the length of the strip bag 200. After a piece of packaging sheet is rolled up and its two opposite sides overlap, they are bonded together by heat pressing to form the longitudinal sealing portion 210.

[0032] The strip bag 200 has a strip-shaped edge seal 220 at one end in the longitudinal direction. The outer side of the edge seal 220 is straight and the inner side is arc-shaped, so that the middle of the edge seal 220 is narrower and the two corners of the edge seal 220 are rounded. After the longitudinal seal 210 is formed, the packaging sheet is in a through-tube shape with two ends open. One end of the package sheet is flattened and then hot-pressed to form the edge seal 220.

[0033] The other end of the strip bag 200 in the length direction has a sealing portion 230 that is roughly C-shaped. An outer side of the sealing portion 230 is arranged opposite to the outer side of the edge sealing portion 220, and the outer side of the sealing portion 230 is also straight. The inner side of the sealing portion 230 is in an arc shape with four bends. The sealing portion 230 has a tear opening 231 at one end (one side in the width direction of the strip bag 200), and a tear limiting hole 232 at the other end. A narrow retaining strip 233 is formed on one side of the tear limiting hole 232 and one side in the width direction of the strip bag 200. The tear opening 231 is an acute V-shaped opening, and its opening direction is outward along the width direction of the strip bag 200. The bottom of the opening is sharp-angled, and the two sides of the opening are rounded. The tear limiting hole 232 is a strip-shaped hole, the length direction of which is consistent with the length direction of the strip bag 200, and it is located on the central axis of the tear opening 231. The middle of the tear limiting hole 232 can be reached from the tear opening 231 along the central axis.

[0034] After the two ends are sealed, the packaging sheet forms a closed structure, and a receiving cavity 240 is formed inside the packaging sheet for receiving liquid. The receiving cavity 240 includes a main cavity portion 241 and an end cavity portion 242. The main cavity portion 241 is located between the two ends, and the end cavity portion 242 is connected to the main cavity portion 241 and is located at the sealing portion 230. The shape of the end cavity portion 242 corresponds to the shape of the sealing portion 230, and is roughly a rectangle with rounded corners when viewed from the side.

[0035] When the strip bag 200 is torn open using the tear opening 231, it will be torn continuously along the central axis of the tear opening 231, and pass through the middle of the end cavity part 242, dividing it to form an opening connected to the main cavity part 241, through which the beverage can be poured out or directly drunk; and when tearing to the tear limiting hole 232, the tearing is interrupted due to the shape of the hole, and the retaining strip 233 allows the strip bag 200 to remain intact after being torn. In this way, after tearing the strip bag 200, an open strip bag and a torn small piece will not be formed, which can avoid the generation of debris and garbage, and is more environmentally friendly.

[0036] In this embodiment, the overall length of the flattened strip bag 200 without content is 118mm, the overall width is 49.8mm, the width of the end cavity part 242 (i.e. the approximate width of the opening after tearing) is 26.8mm, the width of the middle part of the edge sealing part 220 is 5mm, the width of the middle part of the sealing part 230 is 6mm, the depth of the tear opening 231 is 8mm, the distance from the bottom of the tear opening 231 to one end of the strip bag 200 is 14mm, and the length of the tear limiting hole 232 is 12mm. Its designed filling capacity is 40g. Compared with other existing strip bag packaging with the same designed filling capacity, the short environmentally friendly strip bag 200 of this embodiment is significantly shorter in length and has a higher internal space utilization rate.

[0037] When the above-mentioned short environmentally friendly strip bags 200 are mass-produced, the larger packaging sheet is usually rolled up horizontally and the above-mentioned longitudinal sealing part 210 is pressed out to form a long strip-shaped through-cylindrical strip bag substrate, and then the strip bag substrate is sealed, filled and sealed using automatic strip bag filling equipment to form a plurality of the above-mentioned strip bags 200 connected in sequence, which are then cut to form independent finished strip bag packaging products.

[0038] The automatic filling and edge sealing equipment for strip bags of this embodiment will be described in detail below in conjunction with the structure of the above-mentioned short environmentally friendly strip bag 200 .

[0039] Figure 1 It is a three-dimensional schematic diagram of the automatic filling and edge sealing equipment for strip bags in this embodiment.

[0040] like Figure 1 As shown, the automatic filling and edge sealing equipment 100 for strip bags includes a frame 110 , a liquid storage and supply device 120 , a filling device 130 , an edge sealing device 140 , a traction device 150 , a cutting device 160 , a guiding device 170 and a filling and edge sealing control device 180 .

[0041] The liquid storage and supply device 120 includes a liquid storage mechanism 121, a plurality of liquid supply pipes 122, and a plurality of liquid supply control valves 123. The liquid storage mechanism 121 includes a liquid storage tank arranged on one side of the frame 110 and a pressurizer arranged on the liquid storage tank. The liquid storage tank is used to store the liquid to be filled into the strip bag, and the pressurizer is used to pressurize the liquid in the tank. One end of the plurality of liquid supply pipes 122 is connected to the liquid storage tank respectively, and the other end is connected to the filling device 130. After the pressurizer pressurizes the liquid in the liquid storage tank, the liquid flows into the liquid supply pipe 122. The liquid supply control valve 123 is arranged at the liquid supply pipe 122 near the filling device 130, and is used to control the connection and disconnection between the liquid supply pipe 122 and the filling pipe of the filling device 130.

[0042] In an alternative solution, the liquid storage tank may also be disposed on the top of the frame 110 , so that the liquid supply pipe 122 can be shorter and a pressurizer may not be provided.

[0043] Along the longitudinal direction of the frame 110 , a filling device 130 , an edge sealing device 140 , a traction device 150 , a cutting device 160 and a guiding device 170 are sequentially arranged from top to bottom.

[0044] The edge sealing device 140 is used to seal the edges of the long through-tube strip bag substrate, and includes an edge sealing pressing block 141, an edge sealing matching block 142, a heating mechanism 143, and an edge sealing driving mechanism (not shown in the figure).

[0045] The heating mechanism 143 is arranged in the edge sealing block 141, and is used to maintain the predetermined temperature of its pressing surface. The edge sealing block 141 and the edge sealing matching block 142 are both in the shape of long strips, and are used to cooperate with each other to hot press out a transverse sealing part in the middle section of the strip bag substrate, separate the strip bag substrate in the longitudinal direction, and form a sealed unit between two adjacent transverse sealing parts. The edge sealing block 141 has a pressing surface, and the edge sealing matching block 142 has a matching surface. The edge sealing matching block 142 is fixed on the frame 110, and the edge sealing block 141 is movably arranged on the frame 110, and its pressing surface and matching surface are arranged facing each other.

[0046] The edge sealing drive mechanism is used to drive the edge sealing block 141 to press against the edge sealing matching block 142 in the horizontal direction, so as to heat-press the middle section of the strip bag substrate. The edge sealing drive mechanism can adopt a corresponding structure in the prior art, for example, including a plurality of guide rods inserted into corresponding mounting holes on the frame 110 and connected to the edge sealing block 141, and a plurality of edge sealing drive cylinders used to drive the edge sealing block 141 to move in the horizontal direction.

[0047] Figure 2 Schematic diagram of the structure of the strip bag substrate after edge sealing in this embodiment.

[0048] like Figure 2 As shown, after the edge sealing device 140 heat-presses the edge, a portion of the middle section of the strip bag substrate 300 is flattened and bonded to form a transverse sealing portion 310. The transverse sealing portion 310 is roughly in the shape of a letter C with sharp corners, and its shape corresponds to an edge sealing portion 220 and a sealing portion 230. Therefore, the pressing surface of the edge sealing pressing block 141 and the matching surface of the edge sealing matching block 142 are also in the corresponding sharp C shape. After subsequent cutting, a transverse sealing portion 310 becomes the sealing portion 230 of the lower strip bag and the edge sealing portion 220 of the upper strip bag in two continuous strip bags.

[0049] The filling device 130 is used to fill the strip bag substrate 300 having the transverse seal 310 , and to fill the strip bag substrate 300 above the uppermost transverse seal 310 with liquid. The filling device 130 includes a filling pipe 131 , a filling lifting mechanism 132 , and a pipe guiding mechanism 133 .

[0050] The filling tube 131 is in the shape of an elongated cylindrical tube, with a liquid filling opening at its lower end and an upper end connected to the other end of the liquid supply tube 122, and is used to input liquid from the liquid storage mechanism 121 through the liquid supply tube 122, and to fill the liquid into the strip bag substrate 300 above the transverse sealing portion 310 through the liquid filling opening at the lower end. In an alternative solution, the liquid supply control valve 123 can also be arranged at the upper end of the filling tube 131.

[0051] The filling lifting mechanism 132 is used to drive the filling tube 131 to lift and lower, and includes two electric slides 1321, a mounting plate 1322, and a tube fixing assembly 1323. The two electric slides 1321 are respectively fixed on both sides of the upper end of the frame 110, and are both arranged vertically. The mounting plate 1322 is a long strip plate, and its two ends are respectively fixed to the slide components of the two electric slides 1321 by a plurality of fasteners, and the mounting plate 1322 is arranged horizontally. The tube fixing assembly 1323 is arranged in the middle of the mounting plate 1322, and is used to fix the filling tube 131 vertically on the mounting plate 1322. The tube fixing assembly 1323 may, for example, include a metal bracket and a compression sleeve fixed on the mounting plate 1322, the metal bracket having two or more mounting through holes aligned in the vertical direction, the filling tube 131 passing through the multiple mounting through holes, and a compression sleeve is arranged between the filling tube 131 and the through holes, so as to fix the filling tube 131 on the mounting plate 1322, and the two electric slides 1321 can drive the mounting plate 1322 and the filling tube 131 to rise and fall as a whole.

[0052] The tube guide mechanism 133 is used to guide the lifting and lowering of the filling tube 131 to keep it vertical. The tube guide mechanism 133 may, for example, include two long strips of plates, each of which has a guide hole, and the multiple installation through holes and multiple guide holes of the tube fixing assembly 1323 are aligned in the vertical direction.

[0053] The traction device 150 is used to traction the strip bag substrate, so that it moves downward intermittently by a predetermined distance. The traction device 150 includes a clamping block 151, a clamping matching block 152, a clamping driving mechanism (not shown in the figure), and a traction lifting mechanism 153.

[0054] The clamping block 151 and the clamping matching block 152 are in the shape of long strips, and are used to cooperate with each other to clamp the strip bag substrate after filling. The middle of the facing surfaces has a long strip-shaped clamping protrusion extending in the horizontal direction, which is used to clamp the transverse sealing part 310. Optionally, the upper and lower sides of the facing surfaces have auxiliary clamping blocks, which are made of flexible or elastic materials, and the spacing between a pair of auxiliary clamping blocks is slightly larger than the spacing between a clamping protrusion, so that the auxiliary clamping blocks can be used to clamp the strip bag substrate part filled with liquid with less force.

[0055] The clamping drive mechanism is used to drive the clamping block 151 to move in the horizontal direction, so as to clamp or release the transverse seal of the strip bag substrate in cooperation with the clamping matching block 152. The clamping drive mechanism includes, for example, a plurality of guide rods that are inserted into the mounting plate of the traction lifting mechanism 153 and connected to the clamping block 151, and a clamping drive cylinder or a clamping drive motor that is fixed on the mounting plate.

[0056] The traction lifting mechanism 153 is used to drive the clamping block 151, the clamping matching block 152 and the clamping driving mechanism to lift and lower as a whole, so as to cooperate with them to pull the strip bag substrate downward. The traction lifting mechanism 153 may include, for example, two electric slides 1531 and a mounting plate 1532. The two electric slides 1531 are respectively arranged on both sides of the middle of the frame 110, and are both arranged vertically. The mounting plate 1532 is a long strip plate, and its two ends are respectively fixed on the slide components of the two electric slides 1531, and the mounting plate 1532 is arranged horizontally. The clamping matching block 152 is fixed on the mounting plate 1532, and the clamping block 151 is movably arranged on the mounting plate 1532.

[0057] The cutting device 160 is used to cut the transverse sealing portion 310 of the strip bag substrate that has been filled and edge-sealed to form a plurality of continuous sealed packaging units. After cutting, one transverse sealing portion 310 forms the edge sealing portion 220 of an upper semi-finished strip bag 200 and the sealing portion 230 of a lower strip bag 200, and the lower strip bag 200 becomes a finished product. The cutting device 160 includes a cutting pressing block 161, a cutting matching block 162, and a cutting driving mechanism.

[0058] The cutting matching block 162 is fixed on the frame 110, and the cutting pressing block 161 is movably arranged on the frame 110, and both are in the shape of long strips. The cutting pressing block 161 has an edge punching part, a tearing opening punching part, and a limiting hole punching part on the side facing the cutting matching block 162, which are respectively used to punch out the outer edge shape of the edge sealing part 220 and the sealing part 230, the tearing opening 231 on the sealing part 230, and the tearing limiting hole 232, on the transverse sealing part 310, and the punching tool of each punching part is a corresponding shape, which is a die. The cutting matching block 162 has an edge punching matching part, a tearing opening punching matching part, and a limiting hole punching matching part on the side facing the cutting pressing block 161, which are matched with the respective punching matching parts, and each punching matching part is a punching pad or die base matching the punching tool or die.

[0059] The guide device 170 is used to guide the processed strip bag 200 to be transferred to a predetermined position. In this embodiment, the guide device 170 includes a downwardly inclined guide groove plate installed on the frame 110 and located below the cutting device 160. A container can be placed below the outer end of the guide groove plate. After the cutting device 160 cuts out an independent finished strip bag 200, the strip bag 200 slides down along the guide groove plate under the action of gravity and finally falls into the container for temporary storage.

[0060] In an alternative solution, the guiding device 170 may also be a device capable of driving the strip bag 200 to move, such as a belt device.

[0061] In this embodiment, the automatic strip bag filling equipment 100 can process two strip bag substrates 300 arranged side by side at the same time. In the above device, there are two filling tubes 131 arranged side by side; there are two liquid supply tubes 122, one end of which is connected to the liquid storage tank, and the other end is respectively connected to the two filling tubes 131. The remaining devices are all single, and the edge sealing block 141, the edge sealing matching block 142, the clamping block 151, the clamping matching block 152, the cutting block 161, and the cutting matching block 162 are all horizontally arranged long strip blocks, which can cover the two strip bag substrates arranged side by side in the horizontal direction, and the edge sealing block 141 has two above-mentioned pressing surfaces, and the cutting block 161 has two groups of above-mentioned blanking parts. In an alternative solution, the equipment can also be used to simultaneously process more side-by-side strip bag substrates, which requires correspondingly increasing the number of filling tubes 131 and liquid supply tubes 122, and correspondingly improving the structure of the edge sealing block 141 and the cutting block 161, providing more pressing surfaces and more sets of punching parts.

[0062] Optionally, the automatic strip bag filling equipment 100 may further include a substrate supply device, which is used to place the rolled strip bag substrate, and to pull and flatten the strip bag substrate, unroll it, and feed it into the edge sealing device 140 at a predetermined speed.

[0063] Optionally, the automatic strip bag filling equipment 100 may also include a substrate supply device and a longitudinal sealing device. The substrate supply device is used to place the rolled packaging material, and to pull and flatten the packaging material, unwind it and input it into the longitudinal sealing device at a predetermined speed. The longitudinal sealing device rolls the input packaging material into a cylinder, and then overlaps the edges on both sides and performs heat pressing to form a longitudinal sealing portion, thereby forming the above-mentioned strip bag substrate 300, and then the strip bag substrate 300 is input into the edge sealing device 140 at a predetermined speed.

[0064] The filling and edge sealing control device 180 is used to coordinately control the transverse edge sealing, filling, pulling and cutting of the strip bag substrate, and it can be an industrial computer or a single-chip microcomputer.

[0065] Figure 3 It is a logic block diagram of the filling and edge sealing control device in this embodiment.

[0066] like Figure 3 As shown, the filling and edge sealing control device 180 includes a transverse sealing control unit 181 , a filling control unit 182 , a traction control unit 183 , a cutting control unit 184 , and a process control unit 185 .

[0067] The transverse sealing control unit 181 is used to control the edge sealing device 140 , and includes a transverse sealing control unit 1811 , a heating control unit 1812 , and a transverse sealing resetting control unit 1813 .

[0068] The transverse sealing control unit 1811 is used to control the edge sealing driving cylinder to drive the edge sealing pressing block 141 to press toward the edge sealing matching block 142, thereby forming a transverse sealing portion on the strip bag substrate.

[0069] The heating control unit 1812 is used to control the heating mechanism 143 to heat at least the pressing surface of the edge sealing block 141 to keep it at a predetermined temperature. Since the equipment can be produced continuously and quickly, heating is always performed after the machine is turned on.

[0070] The transverse sealing reset control unit 1813 is used to control the edge sealing driving cylinder to drive the edge sealing pressing block 141 to move in the reverse direction for reset after the transverse sealing control unit 1811 completes the control and processes the transverse sealing portion.

[0071] The filling control unit 182 is used to control the filling device 130 , and includes a tube downward movement control unit 1821 , a valve opening control unit 1822 , a valve closing control unit 1823 , and a filling reset control unit 1824 .

[0072] The tube downward movement control unit 1821 is used to control the two electric slides 1321 to drive the filling tube 131 to move downward a predetermined distance at a predetermined speed. After moving downward to the right position, the lower end opening of the filling tube 131 is located in the strip bag base material and above the uppermost horizontal sealing part.

[0073] The valve opening control unit 1822 is used to control the liquid supply control valve 123 to open after the first predetermined waiting time after the tube downward movement control unit 1821 starts its control operation, so as to perform filling. The first predetermined waiting time corresponds to the predetermined downward movement distance of the filling tube 131, and is less than the time it takes for the filling tube 131 to descend from the reset position at a predetermined speed, that is, when the lower end opening of the filling tube 131 extends into the strip bag substrate and the filling tube 131 is still descending, the filling begins.

[0074] The valve closing control unit 1823 is used to control the liquid supply control valve 123 to close after the valve opening control unit 1822 controls the liquid supply control valve 123 to open for a predetermined filling time, wherein the predetermined filling time corresponds to the predetermined filling capacity.

[0075] The filling reset control unit 1824 is used to control the two electric slides 1321 to drive the filling tube 131 to move up a predetermined distance at a predetermined speed after the second predetermined waiting time after the valve closing control unit 1823 controls the liquid supply control valve 123 to close, so as to reset it, wherein the second predetermined waiting time corresponds to the length of the filling tube 131. That is, after closing the valve, the filling tube 131 is reset after waiting for a period of time, so that the remaining liquid in the filling tube 131 can also be poured into the strip bag base material. After resetting, the lowermost end of the filling tube 131 is located above the edge sealing block 141 and the edge sealing matching block 142, and will not interfere with them.

[0076] The traction control unit 183 is used to control the traction device 150 , and includes a clamping control unit 1831 , a pull-down control unit 1832 , a release control unit 1833 , and a traction reset control unit 1834 .

[0077] The clamping control unit 1831 is used to control the clamping drive cylinder to drive the clamping pressure block 151 to press toward the clamping matching block 152, thereby clamping a transverse sealing portion of the lower section of the strip bag substrate.

[0078] The pull-down control unit 1832 is used to control the two electric slides 1531 to drive the clamping block 151 and the clamping mating block 152 to move down a predetermined distance at a predetermined speed after the clamping control unit 1831 completes its control operation and the strip bag substrate is clamped, thereby pulling the strip bag substrate down as a whole by a predetermined distance.

[0079] The release control unit 1833 is used to control the clamping driving cylinder to drive the clamping block 151 to move in the reverse direction after the pull-down control unit 1832 completes its control operation and the strip bag substrate is pulled down to the right position, thereby releasing the strip bag substrate.

[0080] The traction reset control unit 1834 is used to control the two electric slides 1531 to drive the clamping block 151 and the clamping matching block 152 to move up a predetermined distance at a predetermined speed to perform reset after the release control unit 1833 completes its control operation and loosens the strip bag substrate.

[0081] In addition, in this embodiment, the pull-down control unit 1832 first controls the traction lifting mechanism 153 to drive the strip bag substrate to move downward at a first predetermined speed for a first predetermined downward movement time, and then controls the strip bag substrate to move downward at a second predetermined speed for a second predetermined downward movement time, wherein the second predetermined speed is greater than the first predetermined speed, the first predetermined downward movement time is greater than the second predetermined downward movement time, and the first predetermined speed is approximately equal to or slightly greater than the downward movement speed of the filling tube 131. That is, the strip bag substrate is first allowed to move downward slowly to cooperate with the filling tube 131, and considering the rise of the liquid level during filling, its speed can be slightly faster than the descending speed of the filling tube 131; after half or more of the filling is completed, it is moved downward at a relatively faster speed. When the filling is completed or a short time after the filling is completed, the downward movement of the strip bag substrate also stops.

[0082] In an alternative solution, the pull-down control unit 1832 may also control the traction lifting mechanism 153 to drive the strip bag substrate to move downward starting from a predetermined speed and moving downward at a gradually increasing speed.

[0083] In the first half of a filling, since the liquid supply control valve 123 is open, the liquid is relatively high after being pressurized, which will stretch the strip bag substrate for a large distance in the thickness direction, forming a bulge, and the liquid level in the strip bag rises relatively slowly. In the second half of the filling, the liquid supply control valve 123 is closed, and the residual liquid in the filling tube 131 falls into the strip bag substrate by gravity. The perfusion pressure is relatively small, and the amount of stretching the strip bag substrate in the thickness direction will be reduced, and the liquid level in the strip bag will rise relatively faster. Therefore, the above-mentioned speed change design can better perform filling.

[0084] The cutting control unit 184 is used to control the cutting device 160 , and includes a cutting control unit 1841 and a cutting reset control unit 1842 .

[0085] The cutting control unit 1841 is used to control the cutting drive cylinder to drive the cutting pressing block 161 to press toward the cutting matching block 162, thereby cutting a transverse sealing portion 310 to form a processed short environmentally friendly strip bag 200.

[0086] The cutting reset control unit 1842 is used to control the cutting drive cylinder to drive the cutting pressing block 161 to move in the reverse direction after the cutting control unit 1841 completes its control operation and cutting is completed, thereby resetting.

[0087] The process control unit 185 is used to coordinate the work of other control units according to the predetermined timing information. In each cycle, it first controls the transverse sealing control unit 181 and the cutting control unit 184 to start corresponding control operations, so that the edge sealing device 140 forms a transverse sealing portion in the middle section of the strip bag substrate, and then the edge sealing device 140 is reset, and at the same time, the cutting device 160 cuts a transverse sealing portion below, and then resets; then after the edge sealing device 140 and the cutting device 160 are reset, the traction control unit 183 and the filling control unit 182 are controlled to start their corresponding control operations, so that the traction device 150 pulls the strip bag substrate down a predetermined distance, and then resets, and at the same time, the filling pipe 131 of the filling device 130 moves down to fill the liquid, and then resets. Then the control of the next cycle is started, and so on.

[0088] Specifically, in each cycle, the process control unit 185 first controls the transverse sealing control unit 181 and the cutting control unit 184 to start their corresponding control operations, then waits for a first predetermined time (e.g., 1s to 5s), and then controls the traction control unit 183 and the filling control unit 182 to start their corresponding control operations, and then waits for a second predetermined time (e.g., 1s to 5s), ends the control of this cycle, and enters the next cycle, and so on, thereby continuously producing strip bags 200.

[0089] The time taken for the edge sealing device 140 to perform a compression and edge sealing from the initial state and then reset is recorded as the edge sealing time, and the time taken for the cutting device 160 to perform a cutting from the initial state and then reset is recorded as the cutting time, and the first predetermined time is equal to or slightly greater than the longer time of the edge sealing time and the cutting time. That is, after waiting for the first predetermined time, it can be ensured that both devices have completed their corresponding operations and have completed reset.

[0090] Similarly, the time taken for the traction device 150 to be pulled and reset from the initial state is recorded as the traction time, and the time taken for the filling device 130 to be moved down and filled and reset from the initial state is recorded as the filling time, and the second predetermined time is equal to or slightly greater than the longer time of the traction time and the filling time. The traction time corresponds to the overall length of the finished strip bag 200, and the filling time corresponds to the predetermined capacity of the strip bag 200. That is, after waiting for the second predetermined time, it can be ensured that both devices have completed their corresponding operations and have completed the reset.

[0091] In an alternative solution, in each cycle, the process control unit 185 first controls the transverse sealing control unit 181 and the cutting control unit 184 to start their corresponding control operations, then waits for the first predetermined time, then controls the traction device 150 to start its corresponding operation, then waits for the third predetermined time, then controls the filling device 130 to start its corresponding operation, then waits for the fourth predetermined time, ends the control of this cycle, and enters the next cycle. That is, traction and filling are performed in sequence, so although the total duration of a cycle is longer, it can effectively prevent the problem of poor timing coordination between the traction device and the filling device.

[0092] In an alternative solution, when the device further comprises the above-mentioned substrate supply device and longitudinal sealing device, the filling and edge sealing control device 180 further comprises a corresponding substrate supply control unit and longitudinal sealing control unit.

[0093] The substrate supply control unit is used to control the corresponding driving mechanism to drive the rolled packaging material to rotate at a predetermined speed for unwinding. The unwinding can be performed continuously at a certain speed, or intermittently in coordination with the action of the traction device.

[0094] The longitudinal sealing control unit is used to control the longitudinal sealing device to continuously heat-press the packaging material rolled into a tube to form a continuous longitudinal sealing portion.

[0095] Figure 4 This is a flow chart of the strip bag production by the strip bag automatic filling and edge sealing equipment in this embodiment.

[0096] like Figure 4 As shown, under the control of the filling and sealing control device 180, the process of the strip bag automatic filling and sealing device 100 to produce the short environmentally friendly strip bag 200 includes the following steps:

[0097] In step S1, the process control unit 185 controls the transverse sealing control unit 181 and the cutting control unit 184 to start their corresponding control operations simultaneously.

[0098] Step S2: the process control unit 185 waits for a first predetermined time period.

[0099] Step S3, the transverse sealing control unit 181 controls the edge sealing device 140 to heat-press the middle section of the strip bag substrate to form a transverse sealing section, and then controls it to reset.

[0100] In step S4, the cutting control unit 184 controls the cutting device 160 to cut a transverse sealing section of the lower section of the strip bag substrate to form a strip bag 200, and then controls it to reset.

[0101] As shown in the figure, step S2, step S3, and step S4 are performed simultaneously.

[0102] In step S5 , the process control unit 185 controls the traction control unit 183 and the filling control unit 182 to start their corresponding control operations simultaneously.

[0103] Step S6: the process control unit 185 waits for a second predetermined time period.

[0104] In step S7, the traction control unit 183 controls the traction device 150 to clamp a transverse sealing section of the lower section of the strip bag substrate and pull the strip bag substrate downward by a predetermined distance, and then controls it to release the strip bag substrate and reset it.

[0105] Step S8, the filling control unit 182 controls the filling device 130 to drive its filling tube 131 to move downward to fill a predetermined amount of liquid into the strip bag substrate above the uppermost transverse sealing section, and then controls it to stop filling and reset.

[0106] As shown in the figure, step S6, step S7 and step S8 are performed simultaneously.

[0107] After step S6 to step S8, one cycle ends and the process returns to step S1 to start the next cycle of production process.

[0108] By means of the above-mentioned equipment and steps, the above-mentioned short environmentally-friendly strip bags 200 can be automatically produced continuously and efficiently.

[0109] Functions and Effects of the Embodiments

[0110] The automatic filling and edge sealing equipment for strip bags provided according to the present embodiment includes an edge sealing device, a filling device, a traction device and a filling and edge sealing control device, wherein the filling device has a filling tube and a filling lifting mechanism for driving the filling tube to lift and lower, and the filling and edge sealing control device has a process control unit, which controls the overall production and processing, and after the edge sealing device completes the edge sealing operation, the traction device pulls down the strip bag substrate with the transverse sealing portion, and at the same time, the filling tube moves down accordingly for filling, so that it is possible to avoid pulling down the strip bag substrate as a whole after the filling is completed, and there will be no problem of part of the liquid adhering to the inner wall of the strip bag substrate above the liquid surface, so that the edge sealing can be performed at a position closer to the liquid surface, so that a larger volume of liquid can be accommodated in a strip bag package of a certain volume, and the space in the strip bag package is fully utilized. For a certain volume of liquid content, the packaging volume is smaller, the relative cost is lower, and the portability is better.

[0111] In the embodiment, the equipment also has a cutting device, and the process control unit first starts the edge sealing device and the cutting device to operate at the same time. After the two devices complete their operations and reset, the filling device and the traction device start their operations at the same time. Therefore, the punching operation of the specific structure at the sealing part and the slitting operation of the packaging unit can be automatically completed to automatically form a finished strip bag packaging product without the need for subsequent cooperation with other equipment or manual slitting, and the degree of automation is higher. In addition, the edge sealing device and the cutting device can start operating at the same time, and the control process is not complicated.

[0112] Furthermore, in each cycle, the process control unit controls the edge sealing device and the cutting device to start simultaneously, waits for a first predetermined time, and then controls the filling device and the traction device to start simultaneously, and waits for a second predetermined time. The predetermined time is set according to the processing operation time and reset time of the corresponding device. In this way, by waiting for a certain period of time, it can be ensured that each device has completed its corresponding operation, and the process control logic is very simple, and there is no need to set up any sensors or other detection components. Continuous and efficient strip bag packaging production can be achieved at a lower equipment cost, and subsequent inspection and maintenance are also relatively simple, which is suitable for large-scale production of strip bag packaging.

[0113] Furthermore, according to the characteristics of the filling device filling liquid into the bag, the traction control unit controls the traction device to pull down the strip bag substrate at a relatively slow speed first, then at a faster speed, or at a gradually increasing speed, so that the downward movement of the strip bag substrate can better cooperate with the liquid filling, and can further avoid liquid splashing upwards, or the lower end of the filling tube hitting the liquid surface, etc., and can further avoid liquid at the sealed edge, and also make the content capacity in the finished strip bag packaging more accurate.

[0114] Furthermore, the cutting device has a cutting tool or a cutting die on the cutting block for punching out a tear opening and a corresponding tear limiting hole, so that a short environmentally friendly strip bag with a tear opening and a tear limiting hole can be automatically processed. The strip bag can remain as a whole after being torn, thereby avoiding the generation of debris and garbage, and is more environmentally friendly.

[0115] Furthermore, the equipment may also have a substrate supply device and a longitudinal sealing device, which are used to unroll, flatten, roll up the rolled packaging material horizontally and hot-press the longitudinal sealing portion, so that the packaging material can be directly used for automatic production without the need for cooperating with other equipment for unrolling and longitudinal sealing. The equipment has a higher degree of integration and is more convenient to deploy in the production area.

[0116] The above embodiments are only used to illustrate the specific implementation of the present invention, and the present invention is not limited to the description scope of the above embodiments. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

[0117] For example, in the above embodiment, the automatic filling and edge sealing equipment for strip bags is used to produce short environmentally friendly strip bags with tear limiting holes. In an alternative solution, the equipment can also be used to produce ordinary strip bags without the tear limiting holes, and the cutting device does not need to be provided with a punching tool or a cutting die for cutting out the tear limiting holes.

[0118] In the above embodiment, the automatic strip bag filling and edge sealing device is used to produce strip bag packaging products with liquid contents. In an alternative solution, the device can also be used to produce strip bag packaging products with powder or small particles as the contents.

[0119] In the above embodiment, the cutting device of the automatic strip bag filling and edge sealing equipment is used to cut off each packaging unit to form independent finished strip bag packaging products. In an alternative solution, the cutting device can also be used only to cut out the edge shape, tear opening and tear limiting hole, without completely cutting between two adjacent strip bags, so as to form a continuous product. Alternatively, the equipment may not have a cutting device, and other equipment can complete the trimming and slitting operations later.

Claims

1. An automatic filling and sealing device for strip bags, used for filling and sealing a cylindrical strip bag substrate to form a strip bag, characterized in that: include: An edge sealing device, used for sealing the middle section of the strip bag substrate to form a transverse sealing portion that separates the strip bag substrate; A filling device, used for filling the strip bag substrate; A traction device, used for traction of the strip bag substrate; as well as A filling and edge sealing control device is used to control the edge sealing device, the filling device and the traction device. The filling device comprises a filling tube and a filling lifting mechanism for driving the filling tube to rise and fall. The filling and edge sealing control device includes a process control unit for controlling the filling and edge sealing process, so that after the edge sealing device completes the edge sealing operation, the traction device pulls the strip bag substrate downward, and at the same time the filling lifting mechanism drives the filling tube to move downward accordingly and fills the strip bag substrate above the topmost transverse sealing part, and resets after the filling is completed.

2. The automatic filling and edge sealing equipment for strip bags according to claim 1, Features: in, The filling and edge sealing control device also includes: An edge sealing control unit, used for controlling the edge sealing device to perform edge sealing and reset; A filling control unit, used to control the filling lifting mechanism to drive the filling tube to move down a predetermined distance for filling, and then move up and reset; and A traction control unit is used to control the traction device to drive the strip bag substrate to move down a predetermined distance and reset. The process control unit controls the edge sealing control unit to start its control operation in each cycle, then waits for a first predetermined time, and then controls the filling control unit and the traction control unit to start their corresponding control operations, and then waits for a second predetermined time, ends the current cycle and enters the next cycle.

3. The automatic filling and edge sealing equipment for strip bags according to claim 2 is characterized in that: Also includes: A cutting device is used to cut the transverse sealing portion of the strip bag substrate after filling to form a strip bag, Wherein, the filling and edge sealing control device further comprises: a cutting control unit, used for controlling the cutting device to cut and reset the transverse sealing portion, The process control unit controls the edge sealing control unit and the cutting device to start their control operations in each cycle, then waits for a first predetermined time, then controls the filling control unit and the traction control unit to start their corresponding control operations, then waits for a second predetermined time, ends the current cycle and enters the next cycle, The time it takes for the edge sealing device to perform one edge sealing and reset is the edge sealing time. The time it takes for the cutting device to perform one cutting and reset is the cutting time. The first predetermined time is greater than or equal to the longer time of the edge sealing time and the cutting time, The time it takes for the traction device to perform one traction and reset is the traction time. The time it takes for the filling tube to move down, fill and reset is the filling time. The second predetermined time period is greater than or equal to a longer time period between the traction time period and the filling time period.

4. The automatic filling and edge sealing equipment for strip bags according to claim 3 is characterized in that: Also includes: a liquid storage and supply device, comprising a liquid supply pipe for supplying liquid to the filling pipe, One of the liquid supply pipe and the filling pipe is provided with a liquid supply control valve. Wherein, the filling control unit comprises: A tube downward movement control unit, used to control the filling lifting mechanism to drive the filling tube to descend a predetermined distance at a predetermined speed; a valve opening control unit, used for controlling the liquid supply control valve to open after a first predetermined waiting time after the tube lowering control unit starts its control operation; a valve closing control unit, configured to control the liquid supply control valve to close after a predetermined filling time has passed since the valve opening control unit started its control operation; and The filling reset control unit is used to control the filling lifting mechanism to drive the filling tube to move upward and reset after a second predetermined waiting time after the valve closing control unit completes its control operation.

5. The automatic filling and edge sealing equipment for strip bags according to claim 4 is characterized by: in, The first predetermined waiting time is shorter than the time it takes for the filling tube to descend from its reset position at the predetermined speed. The predetermined filling time corresponds to the predetermined filling volume. The second predetermined waiting time corresponds to the length of the filling tube.

6. The automatic filling and edge sealing equipment for strip bags according to claim 4, Features: in, The traction device comprises: Clamping fit block; A clamping block, which is arranged corresponding to the clamping matching block and can move relative to the clamping matching block; A clamping drive cylinder, used for driving the clamping block to move; and The traction lifting mechanism is used to drive the clamping matching block, the clamping pressure block and the clamping driving cylinder to move up and down. The traction control unit comprises: A clamping control unit, used for controlling the clamping drive cylinder to drive the clamping block to press toward the clamping matching block, so as to clamp one of the transverse sealing portions of the lower section of the strip bag substrate; A pull-down control unit, used to control the traction lifting mechanism to drive the clamping block and the clamping matching block and the strip bag substrate clamped by them to move downward at a predetermined speed and a predetermined distance after the clamping control unit completes its control operation; a release control unit, used to control the clamping drive cylinder to drive the clamping block to reset after the pull-down control unit completes its control operation, so as to release the strip bag substrate; and The traction reset control unit is used to control the traction lifting mechanism to drive the clamping block and the clamping matching block to move upward and reset after the release control unit completes its control operation.

7. The automatic filling and edge sealing equipment for strip bags according to claim 6 is characterized by: in, The pull-down control unit controls the traction lifting mechanism to drive the clamping block and the clamping matching block to move downward at a first predetermined speed for a first predetermined downward movement time, and then controls the traction lifting mechanism to drive them to move downward at a second predetermined speed for a second predetermined downward movement time. the second predetermined speed is greater than the first predetermined speed, The first predetermined speed is greater than or equal to the predetermined speed at which the filling tube moves downward.

8. The automatic filling and edge sealing equipment for strip bags according to claim 3, Features: in, The cutting device comprises: Cut the matching blocks; A cutting pressing block, arranged corresponding to the cutting matching block and movable relative to the cutting matching block; and The cutting drive cylinder is used to drive the cutting block to move. The cutting control unit is used to control the cutting drive cylinder to drive the cutting pressure block to press against the cutting matching block, thereby cutting the transverse sealing portion, and then control the cutting drive cylinder to drive the cutting pressure block to reset. The cutting block has: An edge punching portion is used to cut the transverse sealing portion in the longitudinal direction and punch out an edge shape so that the transverse sealing portion becomes an edge sealing portion located at the top and a sealing portion located at the bottom; A tear opening punching portion, used for punching a tear opening on one side of the sealing portion; and The limiting hole punching portion is used for punching a tear limiting hole corresponding to the tear opening in the transverse direction on one side of the sealing portion.

9. The automatic filling and edge sealing equipment for strip bags according to claim 2, Features: in, The filling lifting mechanism comprises: Two electric slides, both set vertically; A mounting plate, both ends of which are respectively fixed on the slide components of the two electric slides; A tube fixing assembly is arranged in the middle of the mounting plate and is used to fix the filling tube on the mounting plate. The filling control unit is used to control the two electric slides to synchronously drive the mounting plate and the filling tube fixed thereon to move up and down. The strip bag automatic filling and edge sealing equipment also includes: A substrate supply device, used for placing rolled packaging materials, and for unrolling and flattening the packaging materials; and The longitudinal sealing device is used to roll the packaging material from the substrate supply device into a tube, overlap the two side edges thereof and perform heat pressing, thereby forming a continuous longitudinal sealing portion.

10. A short environmentally friendly strip bag containing contents, characterized in that: The automatic filling and edge sealing device for strip bags as claimed in any one of claims 1 to 9 is obtained. One end of the short environmentally friendly strip bag has a tear opening and a tear limiting hole arranged corresponding to the tear opening, and the tear limiting hole enables the short environmentally friendly strip bag to remain in one piece after being torn from the tear opening.

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