A material collecting device for a packaging bag making apparatus

Abstract

The application relates to a material collecting device for a packaging bag making equipment, which comprises a rack, a processing table arranged on the rack, a cutting machine for processing the packaging bag arranged on the processing table, a storage box arranged on the rack in a discharging direction of the processing table, a clamping piece for conveying the stacked packaging bags, the clamping piece moving above the processing table and the storage box, a bottom plate arranged in the storage box and moving along the height direction of the storage box, the bottom plate moving downwards by a height of the thickness of one stack of the packaging bags each time the clamping piece places one stack of the packaging bags in the storage box, a placing plate movably arranged on the bottom plate and used for bearing the packaging bags, the placing plate being smaller than the bottom plate in size, and a discharging port being arranged on a side wall of the storage box away from the processing table. The cut packaging bags can be conveniently stored.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of packaging bag production equipment, in particular to a material collecting device for a packaging bag making equipment. BACKGROUND

[0002] Plastic bags are essential in people's daily life, and are widely used due to their small weight and large capacity. The plastic bags commonly used in people's daily life are processed by a bag making machine. The bag making machine automatically stacks a certain number of plastic bags into a stack, folds the plastic bags, and then bundles the folded plastic bags for storage, transportation, sale and use.

[0003] A packaging bag making equipment disclosed in a Chinese patent with the publication number CN217532080U is an automatic material discharging type packaging bag making equipment, which comprises a rack. A collecting table and a processing table are arranged on the rack. A cutting machine is arranged on the processing table. A storage box is arranged on the rack and located on the side of the processing table away from the collecting table. A clamping piece for clamping the packaging bags is arranged on the rack. A storage box for collecting the packaging bags is arranged on the rack and located on the side of the processing table away from the collecting table. The clamping piece slides above the collecting table, the processing table and the storage box.

[0004] According to the related technology in the above, the clamping piece transmits the stacked packaging bags to the storage box for discharging. The stacked packaging bags fall into the storage box in disorder. The packaging bags in the storage box need to be arranged manually before being folded, bundled, stored and transported. It is time-consuming and laborious to fold and bundle the cut packaging bags subsequently. SUMMARY

[0005] In order to facilitate the storage of the cut packaging bags, the application provides a material collecting device for a packaging bag making equipment.

[0006] The application provides a material collecting device for a packaging bag making equipment, which adopts the following technical scheme:

[0007] A material collecting device for a packaging bag making equipment comprises a rack. A processing table is arranged on the rack. A cutting machine for processing the packaging bags is arranged on the processing table. A storage box is arranged on the rack and located in the discharging direction of the processing table. A clamping piece for conveying the stacked packaging bags is arranged on the rack. The clamping piece moves above the processing table and the storage box. A bottom plate that moves along the height direction of the storage box is arranged in the storage box. The bottom plate moves downward by a height of the thickness of a stack of packaging bags each time the clamping piece places a stack of packaging bags in the storage box. A placing plate for bearing the packaging bags is movably arranged on the bottom plate. The size of the placing plate is smaller than that of the bottom plate. An outlet is formed in the side wall of the end of the storage box away from the processing table.

[0008] By adopting the technical scheme, the clamping piece moves the stacked packaging bags to the direction of the storage box, and each time the clamping piece places a stack of packaging bags in the storage box, the stack of packaging bags is placed on the placing plate, the bottom plate is moved downward by a height of a thickness of the stack of packaging bags, the distance between the clamping piece and the placing plate or the uppermost packaging bag on the placing plate is always consistent, the falling height of the packaging bags on the clamping piece is small, the packaging bags are sequentially stacked in the storage box along the height direction of the storage box, and when the storage box is filled with the packaging bags, the placing plate and the packaging bags on the placing plate are taken out of the storage box through the discharge opening, the empty placing plate is placed on the bottom plate, and the bottom plate is moved to the starting height, so that the cut packaging bags are conveniently stored.

[0009] Optionally, the storage box is provided with a lifting screw and a lifting guide rod away from the two sides of the discharge opening respectively, the lifting screw is rotationally connected with the storage box, the lifting guide rod is fixedly connected with the storage box, the lifting screw passes through the bottom plate and is threadedly connected with the bottom plate, the storage box is provided with a lifting motor, an output shaft of the lifting motor is coaxially fixedly connected with the lifting screw, and the lifting guide rod passes through the bottom plate and is movably connected with the bottom plate.

[0010] By adopting the technical scheme, the bottom plate and the placing plate on the bottom plate are moved along the height direction of the storage box by driving the lifting screw to rotate through the starting of the lifting motor, so that the height of the placing plate is conveniently adjusted.

[0011] Optionally, an infrared camera is arranged at the top of the inner wall of the storage box and is electrically connected with the lifting motor, when the infrared camera identifies that a stack of packaging bags falls into the storage box, the infrared camera sends an electrical signal to the lifting motor, and the lifting motor drives the lifting screw to move the bottom plate downward by a height of a thickness of the stack of packaging bags.

[0012] By adopting the technical scheme, when the infrared camera identifies that a stack of packaging bags falls into the storage box, the bottom plate is moved downward by a height of a thickness of the stack of packaging bags, and automatic control of the lifting of the bottom plate is realized.

[0013] Optionally, the placing plate is provided with an elastic rope at two ends.

[0014] By adopting the technical scheme, when the number of the packaging bags falling into the storage box meets the requirement, the elastic rope on the placing plate is wound around the packaging bags and knotted and tightened, the packaging bags on the placing plate are packed and fixed, and the packaging bags on the placing plate are conveniently transported.

[0015] Optionally, the storage box is provided with a first limiting groove along the height direction of the storage box on the inner wall away from the discharge port side, the inner wall of the storage box is provided with a second limiting groove communicated with the first limiting groove in the horizontal direction, a limiting screw is rotatably connected in the first limiting groove in the storage box, and a limiting motor for driving the limiting screw to rotate is arranged in the storage box.

[0016] By adopting the above technical scheme, when the number of packaging bags falling into the storage box meets the demand, the limiting motor rotates, the limiting plate in the second limiting groove is limited in the up-down height direction, and the limiting plate rotates along with the limiting screw; when the limiting plate is completely turned out of the second limiting groove, the limiting plate is limited in the horizontal direction and cannot continue to rotate, the limiting plate moves downward along the second limiting groove with the limiting screw, and the packaging bags on the placing plate are pressed downward, so that the loose rope can be knotted and tightened by passing through the packaging bags.

[0017] Optionally, the bottom of the storage box is provided with a distance sensor below the bottom plate, the distance sensor is used for collecting the distance between the bottom plate and the bottom of the storage box and outputting a distance signal, and the distance sensor is electrically connected with a control module, the control module includes a comparison submodule, a driving submodule and a timing submodule.

[0018] The comparison submodule responds to the distance signal and compares the distance signal with a preset value, and when the distance signal is greater than the preset reference value, the comparison module outputs a control rotation signal;

[0019] The driving submodule responds to the control rotation signal, and when the driving submodule receives the control rotation signal, the limiting motor is controlled to rotate forward and an opening and closing timing signal is sent, and when the driving submodule does not receive the control rotation signal, the limiting motor is controlled to rotate reversely and the opening and closing timing signal is sent;

[0020] The timing submodule responds to the opening and closing timing signal, and when the timing submodule receives the opening and closing timing signal, the timing submodule starts timing according to a given opening and closing time length, and when the timing ends, the timing submodule sends a stop rotation signal, and when the driving submodule receives the stop rotation signal, the limiting motor stops rotating.

[0021] By adopting the above technical scheme, each time a stack of packaging bags is put into the storage box, the bottom plate is lowered by a certain height, when the number of packaging bags falling into the storage box meets the demand, the distance between the bottom plate and the bottom of the storage box is less than the preset distance, the limiting motor is controlled to rotate forward, and the limiting plate presses the packaging bags on the placing plate downward; when the packaging bags in the storage box are taken out, the distance between the bottom plate and the bottom of the storage box is greater than the preset distance after the bottom plate moves upward, the limiting motor is controlled to rotate reversely, and the limiting plate returns to the second limiting groove.

[0022] Optionally, the end of the elastic rope is provided with a rope sleeve, and an inner wall of the storage box is provided with a hanging rod corresponding to the elastic rope, and the rope sleeve is sleeved on the hanging rod.

[0023] By adopting the above technical scheme, when the placing plate is installed, the rope sleeve is sleeved on the hanging rod, and after the storage box is filled with the packaging bags, the user can easily find the elastic rope, and the packaging bags on the placing plate are packed through the elastic rope.

[0024] Optionally, a conveying belt assembly is arranged at the discharging direction of the processing table, and a plurality of storage boxes are placed on the conveying belt assembly, and the conveying belt assembly is used for conveying the storage boxes.

[0025] By adopting the above technical scheme, the plurality of storage boxes are conveyed through the conveying belt assembly, when one storage box is filled with the packaging bags, the conveying belt assembly conveys the storage box filled with the packaging bags, and the empty storage box is conveyed to below the clamping piece, so that the device works continuously without interruption, and the working efficiency is improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The clamping piece moves the stacked packaging bags to the direction of the storage box, and every time the clamping piece places a stack of packaging bags in the storage box, the stack of packaging bags is placed on the placing plate, the bottom plate moves downward by a height of a thickness of the stack of packaging bags, the distance between the clamping piece and the placing plate or the uppermost packaging bag on the placing plate is always consistent, the falling height of the packaging bags on the clamping piece is small, the packaging bags are sequentially stacked in the storage box along the height direction of the storage box, when the storage box is filled with the packaging bags, the placing plate and the packaging bags on the placing plate are taken out from the storage box through the discharging port, the empty placing plate is placed on the bottom plate, and the bottom plate is moved to the initial height, so that the cut packaging bags are conveniently stored;

[0028] 2. Every time a stack of packaging bags is placed in the storage box, the bottom plate is lowered by a certain height, when the number of the packaging bags in the storage box meets the requirement, the distance between the bottom plate and the bottom of the storage box is less than a preset distance, the limit motor is controlled to rotate forward, the limit plate presses the packaging bags on the placing plate, the elastic rope on the placing plate is wound around the packaging bags and tied, the packaging bags on the placing plate are packed and fixed, the packaging bags on the placing plate are conveniently transported, when the packaging bags in the storage box are taken out, the bottom plate is moved upward, the distance between the bottom plate and the bottom of the storage box is greater than the preset distance, and the limit motor is controlled to rotate reversely, so that the limit plate returns to the second limit groove. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the embodiment.

[0030] Figure 2is a schematic view of the connection relationship between the storage box and the rack in the embodiment.

[0031] Figure 3 is a structural schematic view of the storage box in the embodiment.

[0032] Figure 4 is a schematic view of the internal structure of the storage box in the embodiment.

[0033] Figure 5 is a schematic view of the connection relationship between the bottom plate and the placement plate in the embodiment.

[0034] Figure 6 is a circuit schematic view for showing the comparison submodule in the embodiment.

[0035] Figure 7 is a circuit schematic view for showing the driving submodule and the timing submodule in the embodiment.

[0036] BRIEF DESCRIPTION OF THE DRAWINGS: 1, rack; 11, machining table; 111, cutting machine; 12, moving lead screw; 121, nut seat; 13, sliding rod; 131, sliding seat; 14, sliding plate; 141, support plate; 1411, clamping piece; 1412, driving cylinder; 2, storage box; 21, bottom plate; 211, lifting lead screw; 2111, lifting motor; 212, lifting guide rod; 213, limiting groove; 22, placement plate; 221, limiting protrusion; 222, elastic rope; 23, infrared camera; 24, hanging rod; 25, first limiting groove; 26, second limiting groove; 27, limiting motor; 271, limiting screw; 272, limiting plate; 3, conveyor belt assembly; 31, conveyor belt; 4, comparison submodule; 5, driving submodule; 6, timing submodule; 7, distance sensor. DETAILED DESCRIPTION

[0037] The application will be further described in detail below with reference to all the accompanying drawings.

[0038] The embodiment of the application discloses a material collecting device for a packaging bag making equipment.

[0039] Referring to Figure 1 A material collecting device for a packaging bag making equipment, comprising a rack 1, a machining table 11 is installed on the rack 1, and a cutting machine 111 is installed on the machining table 11, and the cutting machine 111 is used for cutting and processing the packaging bag.

[0040] Referring to Figure 1 and Figure 2The rack 1 is rotatably connected with a moving screw rod 12 on one side, the moving screw rod 12 passes through the machining table 11 and the storage box 2, a screw nut seat 121 is threadedly connected on the moving screw rod 12, a sliding rod 13 is fixedly installed on the side of the rack 1 away from the moving screw rod 12, a sliding seat 131 is movably connected on the sliding rod 13, a sliding plate 14 is fixedly connected between the screw nut seat 121 and the sliding seat 131, a plurality of supporting plates 141 are fixedly installed on the sliding plate 14, clamping pieces 1411 and drive cylinders 1412 for driving the clamping pieces 1411 to clamp are installed on the supporting plates 141, the rotation of the moving screw rod 12 drives the screw nut seat 121 to move on the side of the machining table 11 and the storage box 2, and drives the clamping pieces 1411 to move, and the drive cylinders 1412 control the clamping pieces 1411 to clamp and release the packaging bags.

[0041] With reference to Figure 2 The machining table 11 is provided with a conveying belt assembly 3 in the discharging direction, the conveying belt assembly 3 is composed of a plurality of matched conveying belts 31, and the storage boxes 2 are placed on different conveying belts 31 as needed, a plurality of storage boxes 2 are placed on the conveying belt assembly 3, the conveying belt assembly 3 is used for conveying the storage boxes 2, when one storage box 2 is filled with packaging bags, the conveying belt assembly 3 conveys the storage box 2 filled with packaging bags out and conveys the empty storage box 2 to below the clamping pieces 1411, so that the device works continuously without interruption and the work efficiency is improved.

[0042] With reference to Figure 3 and Figure 4 The storage box 2 is provided with a bottom plate 21 moving in the height direction of the storage box 2, and a placing plate 22 for bearing the packaging bags is movably arranged on the bottom plate 21, the clamping pieces 1411 put the stacked packaging bags into the storage box 2, the placing plate 22 bears the packaging bags, and a discharging port is formed in the side wall of the end of the storage box 2 away from the machining table 11, the placing plate 22 and the packaging bags on the placing plate 22 are taken out through the discharging port. The storage box 2 is provided with a lifting screw rod 211 and a lifting guide rod 212 on the two sides away from the discharging port, the lifting screw rod 211 is rotatably connected with the storage box 2, the lifting guide rod 212 is fixedly connected with the storage box 2, the lifting screw rod 211 passes through and is threadedly connected with the bottom plate 21, a lifting motor 2111 is installed on the storage box 2, the output shaft of the lifting motor 2111 is coaxially fixedly connected with the lifting screw rod 211, the lifting guide rod 212 passes through and is movably connected with the bottom plate 21, the bottom plate 21 and the placing plate 22 on the bottom plate 21 are driven to move in the height direction of the storage box 2 by starting the lifting motor 2111 and driving the lifting screw rod 211 to rotate, so that the height of the placing plate 22 is adjusted conveniently.

[0043] With reference to Figure 5The lower end surface of the placement plate 22 is fixedly provided with a limiting protrusion 221, and the upper end surface of the bottom plate 21 is provided with a limiting groove matched with the limiting protrusion 221, so as to improve the stability of the placement plate 22 on the bottom plate 21, and the size of the placement plate 22 is smaller than that of the bottom plate 21.

[0044] With reference to Figure 3 The inner wall of the storage box 2 is provided with an infrared camera 23 at the top, and the infrared camera 23 is electrically connected with the lifting motor 2111. When the infrared camera 23 identifies that a stack of packaging bags falls into the storage box 2, the infrared camera 23 sends an electrical signal to the lifting motor 2111, and the lifting motor 2111 drives the lifting lead screw 211 to rotate in the positive direction, so as to move the bottom plate 21 downward by the height of the thickness of the stack of packaging bags, thereby realizing automatic control of the lifting of the bottom plate 21.

[0045] With reference to Figure 3 The two ends of the placement plate 22 are connected with elastic ropes 222, the elastic ropes 222 are elastic, and the ends of the elastic ropes 222 are provided with rope sleeves. The inner wall of the storage box 2 is provided with a hanging rod 24 matched with the elastic ropes 222. When the placement plate 22 is installed, the rope sleeves are sleeved on the hanging rod 24. When the number of packaging bags in the storage box 2 meets the demand, the rope sleeves are taken out from the hanging rod 24. The elastic ropes 222 on the placement plate 22 are wound around the packaging bags and knotted tightly, so as to fix the packaging bags on the placement plate 22, thereby facilitating the transportation of the packaging bags on the placement plate 22.

[0046] With reference to Figure 3 The inner wall of the storage box 2 away from the discharge port is provided with a first limiting groove 25 along the height direction of the storage box 2, and the inner wall of the storage box 2 is provided with a second limiting groove 26 along the horizontal direction and communicated with the first limiting groove 25. The storage box 2 is rotatably connected with a limiting screw 271 located in the first limiting groove 25, and the storage box 2 is provided with a limiting motor 27 for driving the limiting screw 271 to rotate. The limiting screw 271 is threadedly connected with a limiting plate 272 located in the second limiting groove 26. When the number of packaging bags in the storage box 2 meets the demand, the limiting motor 27 rotates, and the limiting plate 272 located in the second limiting groove 26 is limited in the up-down height direction. The limiting plate 272 rotates with the limiting screw 271. When the limiting plate 272 is completely turned out of the second limiting groove 26, the limiting plate 272 is limited in the horizontal direction and cannot continue to rotate. The limiting plate 272 moves downward along the second limiting groove 26 with the limiting screw 271, and presses the packaging bags on the placement plate 22, thereby facilitating the elastic ropes 222 to be wound around the packaging bags and knotted tightly.

[0047] With reference to Figure 6 and Figure 7The bottom of the storage box 2 is provided with a distance sensor 7 below the bottom plate 21, which is used to collect the distance between the bottom plate 21 and the bottom of the storage box 2 and output a distance signal, the distance signal is a voltage signal, the smaller the distance between the bottom plate 21 and the bottom of the storage box 2, the greater the output distance signal voltage of the distance sensor 7, and the distance sensor 7 is electrically connected with a control module, which includes a comparison submodule 4, a driving submodule 5 and a timing submodule 6.

[0048] The comparison submodule 4 includes a comparator T electrically connected with the distance sensor 7, and the pressure sensor P is electrically connected with the positive electrode of the comparator T, the output end of the comparator T is electrically connected with a triode Q, the output end of the comparator T is electrically connected with the base electrode of the triode Q, the collector electrode of the triode Q is electrically connected with a first resistor R1, the other end of the first resistor R1 is electrically connected with a power supply VCC, the emitter electrode of the triode Q is electrically connected with the electromagnetic coil KA1 of a rotation sensing relay, and the other end of the electromagnetic coil KA1 of the rotation sensing relay is grounded.

[0049] The driving submodule 5 includes a limiting motor 27 installed on the storage box 2, one end of the limiting motor 27 is electrically connected with the normally open switch KA1-1 of the rotation sensing relay, the other end of the normally open switch KA1-1 of the rotation sensing relay is electrically connected with the power supply VCC, the other end of the opening and closing motor 3 is electrically connected with the normally open switch KA1-2 of the rotation sensing relay, the two ends of the normally open switch KA1-1 of the rotation sensing relay and the opening and closing motor 3 are commonly connected in parallel with the normally open switch KA2-1 of the related door sensing relay, the two ends of the normally open switch KA1-2 of the rotation sensing relay and the opening and closing motor 3 are commonly connected in parallel with the normally open switch KA2-2 of the related door sensing relay, and the end of the normally open switch KA1-2 of the rotation sensing relay away from the opening and closing motor 3 is electrically connected with the timing submodule 6.

[0050] The timing submodule 6 includes an electromagnetic coil KT1 of an opening and closing power-on delay relay electrically connected with the normally open switch KA1-2 of the rotation sensing relay away from the limiting motor 27, the other end of the electromagnetic coil KT1 of the opening and closing power-on delay relay is electrically connected with a normally closed switch KT1-1 of the opening and closing power-on delay relay, and the other end of the normally closed switch KT1-1 of the opening and closing power-on delay relay is grounded.

[0051] The distance sensor 7 sends a distance signal, the comparison sub-module 4 responds to the distance signal, and compares the distance signal with the reference value of the comparator T. When the distance signal is greater than the reference value, the transistor Q is turned on, the electromagnetic coil KA1 of the rotation induction relay is powered on to turn on, the normally open switch KA1-1 of the rotation induction relay and the normally open switch KA1-2 of the rotation induction relay are closed, and the rotation motor 5 is powered on to rotate; the electromagnetic coil KA2 of the rotation induction relay outputs a rotation induction signal. At this time, the normally open switch KA1-1 of the rotation induction relay and the normally open switch KA1-2 of the rotation induction relay are closed, the normally closed switch KA2-3 of the rotation induction relay is closed, the electromagnetic coil KT1 of the opening and closing power-on delay relay is powered on to turn on, at this time the normally closed switch KT1-1 of the opening and closing power-on delay relay is closed, the limit motor 27 is powered on to turn clockwise, and after a given opening and closing time, the normally closed switch KT1-1 of the opening and closing power-on delay relay is opened. The opening and closing time is that the limit plate 272 moves from the second limit groove 26 to the lowermost end of the first limit groove 25. At this time, the limit motor 27 stops rotating, and the limit plate 272 presses the packaging bag on the placement plate 22. When the distance signal is less than the reference value, the transistor Q is turned off. At this time, the electromagnetic coil KA2 of the rotation induction relay is de-energized to turn off, the electromagnetic coil KA2 of the rotation induction relay does not output a rotation induction signal, the normally open switch KA1-1 of the rotation induction relay and the normally open switch KA1-2 of the rotation induction relay are opened, the normally open switch KA2-1 and the normally open switch KA2-2 are closed, the limit motor 27 is powered on to reverse, and after a given opening and closing time, the normally closed switch KT1-1 of the opening and closing power-on delay relay is opened. At this time, the limit motor 27 stops rotating, so that the limit plate 272 returns to the second limit groove 26.

[0052] A stack of packaging bags is placed in each storage box 2, and the bottom plate 21 is lowered by a certain height. When the number of packaging bags in the storage box 2 meets the demand, the distance between the bottom plate 21 and the bottom of the storage box 2 is less than the preset distance, the limit motor 27 is controlled to rotate clockwise, and the limit plate 272 presses the packaging bag on the placement plate 22. When the packaging bags in the storage box 2 are taken out, the bottom plate 21 moves upward, and the distance between the bottom plate 21 and the bottom of the storage box 2 is greater than the preset distance. The limit motor 27 is controlled to reverse, so that the limit plate 272 returns to the second limit groove 26.

[0053] The implementation principle of the material collecting device of the packaging bag making equipment is as follows: the clamping part 1411 moves the stacked packaging bags to the direction of the storage box 2. When the clamping part 1411 places a stack of packaging bags in the storage box 2, the stack of packaging bags is placed on the placing plate 22, and the bottom plate 21 moves downward by a height of the thickness of the stack of packaging bags. The distance between the clamping part 1411 and the placing plate 22 or the uppermost packaging bag on the placing plate 22 is always consistent, so that the falling height of the packaging bag on the clamping part 1411 is small, and the packaging bag is sequentially stacked in the storage box 2 along the height direction of the storage box 2. When the storage box 2 is filled with packaging bags, the placing plate 22 and the packaging bags on the placing plate 22 are taken out of the storage box 2 through the discharge port, the empty placing plate 22 is placed on the bottom plate 21, and the bottom plate 21 is moved to the starting height, so that the cut packaging bags are conveniently stored.

[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A receiving device for a packaging bag making machine, comprising a frame (1), wherein a processing table (11) is provided on the frame (1), and a cutting machine (111) for processing packaging bags is provided on the processing table (11), characterized in that: The frame (1) is provided with a storage box (2) located in the discharge direction of the processing table (11). The frame (1) is provided with a clamping member (1411) for conveying stacked packaging bags. The clamping member (1411) moves above the processing table (11) and the storage box (2). The storage box (2) is provided with a base plate (21) that moves along the height direction of the storage box (2). Whenever the clamping member (1411) places a stack of packaging bags into the storage box (2), the base plate (21) moves down by the thickness of the stack of packaging bags. The base plate (21) is movably provided with a placement plate (22) for carrying the packaging bags. The size of the placement plate (22) is smaller than the size of the base plate (21). The storage box (2) has a discharge port on the side wall away from the processing table (11). The placement plate (22) is provided with elastic ropes (222) at both ends; The end of the elastic rope (222) is provided with a rope loop, and the inner wall of the storage box (2) is provided with a hanging rod (24) corresponding to the elastic rope (222), and the rope loop is put on the hanging rod (24); The storage box (2) has a first limiting groove (25) on the inner wall away from the discharge port, which is opened along the height direction of the storage box (2). The inner wall of the storage box (2) has a second limiting groove (26) that communicates with the first limiting groove (25) in the horizontal direction. A limiting screw (271) located in the first limiting groove (25) is rotatably connected inside the storage box (2). A limiting motor (27) that drives the limiting screw (271) to rotate is provided inside the storage box (2). A limiting plate (272) located in the second limiting groove (26) is threadedly connected to the limiting screw (271). The storage box (2) is provided with a distance sensor (7) located below the base plate (21). The distance sensor (7) is used to collect the distance between the base plate (21) and the bottom of the storage box (2) and output a distance signal. The distance sensor (7) is electrically connected to a control module, which includes a comparison submodule (4), a drive submodule (5), and a timing submodule (6). The comparison submodule (4) responds to the distance signal and compares the distance signal with a preset value. When the distance signal is greater than the preset reference value, the comparison module outputs a control rotation signal. The drive submodule (5) responds to the control rotation signal. When the drive submodule (5) receives the control rotation signal, it controls the limit motor (27) to rotate forward and sends an opening timing signal. When the drive module does not receive the control rotation signal, it controls the limit motor (27) to rotate in reverse and sends an opening timing signal. The timing submodule (6) responds to the opening and closing timing signal. When the timing submodule (6) receives the opening and closing timing signal, the timing submodule (6) starts timing according to the given opening and closing duration. When the timing ends, the timing submodule sends a stop signal. When the drive submodule (5) receives the stop signal, it controls the limit motor (27) to stop rotating.

2. The material receiving device for a packaging bag making equipment according to claim 1, characterized in that: The storage box (2) is provided with a lifting screw (211) and a lifting guide rod (212) on both sides away from the discharge port. The lifting screw (211) is rotatably connected to the storage box (2), and the lifting guide rod (212) is fixedly connected to the storage box (2). The lifting screw (211) passes through the base plate (21) and is threadedly connected to the base plate (21). The storage box (2) is provided with a lifting motor (2111). The output shaft of the lifting motor (2111) is coaxially fixedly connected to the lifting screw (211). The lifting guide rod (212) passes through the base plate (21) and is movably connected to the base plate (21).

3. The material receiving device for a packaging bag making equipment according to claim 2, characterized in that: An infrared camera (23) is installed on the top of the inner wall of the storage box (2). The infrared camera (23) is electrically connected to the lifting motor (2111). When the infrared camera (23) detects that a stack of packaging bags has fallen into the storage box (2), the infrared camera (23) sends an electrical signal to the lifting motor (2111). The lifting motor (2111) drives the lifting screw (211) to move the bottom plate (21) down by the thickness of a stack of packaging bags.

4. The material receiving device for a packaging bag making equipment according to claim 1, characterized in that: The processing table (11) is provided with a conveyor belt (31) assembly (3) in the discharge direction. Multiple storage boxes (2) are placed on the conveyor belt (31) assembly (3). The conveyor belt (31) assembly (3) is used to transport the storage boxes (2).

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