Bag making and bagging device

By employing a slidingly connected film-pulling assembly and clamping structure in the bag-making and bag-packing device, the interference problem between the sealing and cutting mechanism and the bag-opening mechanism is solved, enabling single-layer folding of the film bag, improving the bag-packing effect and reducing production costs.

CN223721324UActive Publication Date: 2025-12-26HUIZHOU GURKI INTELLIGENT EQUIP CO LTD
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Patent Information

Application Number
CN202520369600.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2025-12-26
Estimated Expiration
2035-03-05

AI Technical Summary

Technical Problem

In existing bag making and bagging machines, the distance limitation between the sealing and cutting mechanism and the bag opening mechanism results in excessively long folded edges of the film bags, affecting the bagging effect and increasing production costs.

Method used

A bag-making and bag-packing device was designed, wherein the bag opening mechanism includes two film-pulling components that are slidably connected relative to each other along a first direction, and a clamping structure is slidably connected to a connecting plate along a second direction. The clamping structure can be close to the cut point of the film strip to form a square bag opening, thus avoiding interference and multi-layer folded film edges during clamping.

Benefits of technology

This effectively avoids excessively long folded edges on the film bags, improving the bagging effect and reducing production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of film bag manufacturing, and discloses a bag making and bagging device which comprises a film sealing and cutting mechanism and a bag opening mechanism. The film sealing and cutting mechanism is provided with a sealing and cutting station used for heat sealing and cutting off the film belt. The bag opening mechanism is located below the film sealing and cutting mechanism. Wherein the bag opening mechanism comprises a fixed seat and two film drawing assemblies which are relatively connected to the fixed seat in a sliding mode in the first direction, and the two film drawing assemblies are located on the two sides of the sealing and cutting station correspondingly; the film drawing assembly comprises a connecting plate, a clamping structure and a first driving part, the connecting plate is slidably connected to the fixing base in the first direction, the clamping structure is slidably connected to the connecting plate in the second direction, the second direction is perpendicular to the first direction, and the first driving part drives the clamping structure to slide in the second direction; and the second direction is parallel to the transmission direction of the film belt at the sealing and cutting station. According to the bag making and bagging device, the problems that the film folding edge of a film bag is too long, the bagging effect is affected, and the production cost is increased are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the field of film bag manufacturing technology, especially to a bag making and bagging device. BACKGROUND

[0002] The bag making and bagging machine is mainly used for manufacturing film bags, and then using the film bags to bag or package containers, boxes and other products.

[0003] In the prior art, the bag making and bagging machine comprises a sealing and cutting film mechanism and a bag opening mechanism arranged in sequence, the sealing and cutting film mechanism is used to heat seal and cut the film strip, so that the end of the film strip away from the bag opening mechanism has an opening, and the end close to the bag opening mechanism is closed, and the bag opening mechanism is used to open the heat sealed film strip to form a film bag.

[0004] However, in order to ensure that the sealing and cutting film mechanism and the bag opening mechanism do not interfere with each other, a certain distance will be generated between the sealing and cutting film mechanism and the bag opening mechanism and will be relatively fixed, so that when the clamping jaw of the bag opening mechanism clamps the film bag, the position of the clamping jaw clamping the film bag will be far away from the bag opening of the film bag due to the distance limitation, and the film bag will have an excessively long film folding edge, which not only affects the bagging effect but also increases the production cost. SUMMARY

[0005] In order to solve the problems of the prior art, the utility model provides a bag making and bagging device, which avoids the problem of excessively long film folding edge of the film bag, which not only affects the bagging effect but also increases the production cost.

[0006] The technical effects achieved by the utility model are realized through the following technical solutions:

[0007] The utility model provides a bag making and bagging device, which comprises:

[0008] The sealing and cutting film mechanism has a sealing and cutting station for heat sealing and cutting the film strip; and

[0009] The bag opening mechanism is located below the sealing and cutting film mechanism;

[0010] The bag opening mechanism comprises a fixed seat and two film pulling assemblies slidably connected to the fixed seat in a first direction, and the two film pulling assemblies are respectively located on both sides of the sealing and cutting station.

[0011] The film pulling assembly comprises a connecting plate, a clamping structure and a first driving member, the connecting plate is slidably connected to the fixed seat in a first direction, the clamping structure is slidably connected to the connecting plate in a second direction, the second direction is perpendicular to the first direction, the first driving member drives the clamping structure to slide in the second direction, and the second direction is parallel to the transmission direction of the film strip in the sealing and cutting station.

[0012] In some implementations, the clamping structure includes a clamping member and a second driving member, the clamping member is slidingly connected to the connecting plate along the second direction, and the second driving member drives the clamping member to clamp or release the film strip.

[0013] In some implementations, the clamping member includes a clamping rail, a first clamping jaw, and a second clamping jaw, the clamping rail is slidingly connected to the connecting plate, the second driving member is fixedly connected to the clamping rail, the first clamping jaw is fixedly connected to the second driving member, the second clamping jaw is slidingly connected to the clamping rail and is oppositely arranged with the first clamping jaw and forms a clamping area; the clamping members of the two film pulling assemblies are staggered.

[0014] In this implementation, when clamping the film strip, the second driving member drives the second clamping jaw to slide along the clamping rail, so that the second clamping jaw abuts against the first clamping jaw of the oppositely arranged film pulling assembly, thereby clamping the film strip.

[0015] In some implementations, the number of the bag opening mechanisms is two, including a first bag opening assembly and a second bag opening assembly, the first bag opening assembly and the second bag opening assembly are spaced apart along a third direction, and the third direction is orthogonal to the first direction and the second direction.

[0016] In some implementations, the first bag opening assembly and the second bag opening assembly are relatively movable along the third direction.

[0017] In some implementations, the second driving member includes a pneumatic cylinder, the pneumatic cylinder has a piston rod, the pneumatic cylinder is fixedly connected to the clamping rail, the first clamping jaw is fixedly connected to the pneumatic cylinder, and the piston rod is respectively connected to the pneumatic cylinder and the second clamping jaw.

[0018] In some implementations, the clamping member further includes an elastic abutting portion, and the elastic abutting portion covers the first clamping jaw and / or the second clamping jaw.

[0019] In some implementations, a bag supporting mechanism and a third driving member are further included, the bag supporting mechanism is slidingly connected to the fixed seat, the third driving member is fixedly connected to the connecting plate, and an output end of the third driving member is connected to the bag supporting mechanism.

[0020] In this implementation, when the clamping structure of the film pulling assembly clamps the film strip and pulls it to form a film bag, the third driving member drives the bag supporting mechanism to slide to a preset position, thereby supporting the film bag to make the periphery of the film bag more flat, and then facilitating the film bag to be sleeved into a container such as a box.

[0021] In some implementations, the bag opening mechanism comprises a sliding plate, a bag opening plate and a fourth driving element, the sliding plate is slidingly connected to the fixed seat, the output end of the third driving element is connected to the sliding plate, the bag opening plate is rotationally connected to the sliding plate near one end of the film strip, and the fourth driving element drives the bag opening plate to rotate.

[0022] In some implementations, the film sealing and cutting mechanism comprises a film sealing and cutting driving element, a film pressing driving element, and a film sealing assembly and a film pressing assembly which are movably arranged relative to each other in a first direction, the film sealing and cutting driving element drives the film sealing assembly to move, and the film pressing driving element drives the film pressing assembly to move, so that the film sealing assembly and the film pressing assembly move closer to or farther away from each other.

[0023] In some implementations, the film sealing assembly comprises a film sealing base, a heat sealing cutter and a film cutting cutter, the film sealing base is provided with a first mounting groove and a second mounting groove from top to bottom on one side of the film pressing assembly, the heat sealing cutter is arranged in the first mounting groove, the film cutting cutter is arranged in the second mounting groove, and the film sealing and cutting driving element is drivingly connected to the film sealing base.

[0024] The film pressing assembly is provided with a clearance groove at a position corresponding to the film cutting cutter, so that the film cutting cutter can be avoided.

[0025] In summary, the bag making and bagging device has at least the following advantages:

[0026] The bag making and bagging device provided by the utility model, two film pulling assemblies are slidingly connected to the fixed seat relative to each other in a first direction, the clamping structures of the film pulling assemblies are slidingly arranged in a second direction, the second direction is perpendicular to the first direction, the film strip is transmitted to the space between the two film pulling assemblies after the film sealing and cutting work of the film sealing and cutting mechanism, the two film pulling assemblies are relatively slid to the preset positions, the first driving element drives the clamping structures to slide in the second direction, so that the clamping structures are close to the cut end of the film strip, and the two clamping structures clamp the two sides of the film strip respectively, so that the film strip is pulled apart to form a film bag with a square bag opening. Since the clamping structures can slide in the second direction, the interference between the bag opening mechanism and the film sealing and cutting mechanism is avoided, the film bag only has one folded film edge when the clamping structures clamp the film, the length of the folded film edge of the film bag is prevented from being too long, the problem that the bagging effect is affected and the production cost is increased is solved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic view of the bag making and bagging device of Example 1.

[0028] Figure 2 It is a structural schematic view of the bag opening mechanism. Figure 1

[0029] Figure 3 It is a structural schematic view of the film sealing and cutting mechanism.​Figure 2 Structure diagram of the clamping structure shown;

[0030] Figure 4 Structure diagram of the first bag opening assembly and the second bag opening assembly of the embodiment 1;

[0031] Figure 5 Structure diagram of the bag making and sleeving device of the embodiment 2;

[0032] Figure 6 Structure diagram of the bag making and sleeving device of the embodiment 3.

[0033] Markings in the figure:

[0034] 1, sealing and cutting film mechanism; 11, sealing and cutting station; 12, sealing film driving part; 13, film pressing driving part; 14, sealing film assembly; 141, sealing film base; 1411, first mounting groove; 1412, second mounting groove; 142, hot sealing cutter; 143, film cutting cutter; 15, film pressing assembly; 151, position avoiding groove;

[0035] 2, bag opening mechanism; 21, fixed seat; 22, film pulling assembly; 221, connecting plate; 222, clamping structure; 2221, clamping part; 222a, clamping guide rail; 222b, first clamping jaw; 222c, second clamping jaw; 222d, clamping area; 222g, elastic abutting part; 2222, second driving part; 222e, air cylinder; 222f, piston rod; 223, first driving part; 23, first bag opening assembly; 24, second bag opening assembly;

[0036] 3, bag supporting mechanism; 31, sliding plate; 32, bag supporting plate; 33, fourth driving part;

[0037] 4, third driving part. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, but not all the embodiments of the present application.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0040] Embodiment 1:

[0041] Please refer to the attached Figure 1 The utility model discloses a bag making and sleeving device Figure 4 , the bag making and sleeving device comprises a sealing and cutting film mechanism 1 and a bag opening mechanism 2.

[0042] Among them, please combine Figure 1 and Figure 2 , Figure 1 The structure relationship of the sealing and cutting film mechanism 1 and the bag opening mechanism 2 in the utility model embodiment is shown, Figure 2 The specific structure of the sealing and cutting film mechanism 1 in the utility model embodiment is shown. In order to facilitate description, an example of a first direction, a second direction and a third direction is defined, and the specific structure is as follows Figure 1 As shown, the X-Y-Z coordinate axis is defined, wherein the first direction is parallel to the X axis, the second direction is parallel to the Z axis, and the third direction is parallel to the Y axis, and the three directions are orthogonal to each other. It can be understood that the first direction, the second direction and the third direction can also be not orthogonal to each other, or partially orthogonal.

[0043] Specifically, the sealing and cutting film mechanism 1 has a sealing and cutting station 11 for heat sealing and cutting off the film strip; the bag opening mechanism 2 is located below the sealing and cutting film mechanism 1. Among them, the bag opening mechanism 2 comprises a fixed seat 21 and two film pulling assemblies 22 slidably connected to the fixed seat 21 along the first direction, and the two film pulling assemblies 22 are located on both sides of the sealing and cutting station 11 respectively; the film pulling assembly 22 comprises a connecting plate 221, a clamping structure 222 and a first driving member 223, the connecting plate 221 is slidably connected to the fixed seat 21 along the first direction, the clamping structure 222 is slidably connected to the connecting plate 221 along the second direction, the second direction is perpendicular to the first direction, the first driving member 223 drives the clamping structure 222 to slide in the second direction, and the second direction is parallel to the transmission direction of the film strip in the sealing and cutting station 11.

[0044] In the embodiment, the sealing and cutting film mechanism 1 and the bag opening mechanism 2 are sequentially arranged, the sealing and cutting film mechanism 1 is used for heat sealing and cutting off the film strip, so that the end of the film strip close to the sealing and cutting film mechanism 1 has an opening in the process of transmitting to the bag opening mechanism 2, and the end close to the bag opening mechanism 2 is in a closed state, when the film strip reaches the bag opening station of the bag opening mechanism 2, the clamping structures 222 of the two film pulling mechanisms are clamped at the film strip close to the bag opening, so as to pull the film strip to form a film bag with a square bag opening, and then facilitate the film bag to be sleeved into a container such as a box.

[0045] Specifically, the two film pulling assemblies 22 are arranged to slide relative to each other along a first direction, and the clamping structures 222 of the film pulling assemblies 22 are arranged to slide along a second direction, which is perpendicular to the first direction. In actual operation, when the film strip is transported to the space between the two film pulling assemblies 22, the two film pulling assemblies 22 slide relative to each other along the fixed seat 21 to a preset position, the first driving member 223 drives the clamping structures 222 to slide along the second direction, so that the clamping structures 222 are close to the cut-off part of the film strip, i.e., the bag opening of the film strip, and the two clamping structures 222 clamp the two sides of the film strip respectively, so as to pull the film strip apart to form a film bag with a square bag opening. It can be understood that, since the clamping structures 222 can slide along the second direction which is parallel to the transport direction of the film strip, the positions at which the clamping structures 222 clamp the film bag can be close to the bag opening of the film bag, so that only one layer of folded film edge is formed when the clamping structures 222 clamp the film bag. In the prior art, the clamping structures 222 are fixedly connected to the connecting plate 221, and the bag opening mechanism 2 is interfered by the sealing and cutting film mechanism 1, so that the clamping structures 222 cannot be close to the cut-off part of the film strip when clamping the film strip, and three layers of folded film edge will be formed when clamping the film, which further leads to that the length of the folded film edge is too long, the bagging is prone to wrinkles, and the production cost is increased.

[0046] The above-mentioned bag making and bagging device, the two film pulling assemblies 22 are arranged to slide relative to each other along a first direction, and the clamping structures 222 of the film pulling assemblies 22 are arranged to slide along a second direction, which is perpendicular to the first direction. In actual operation, when the film strip is transported to the space between the two film pulling assemblies 22, the two film pulling assemblies 22 slide relative to each other along the fixed seat 21 to a preset position, the first driving member 223 drives the clamping structures 222 to slide along the second direction, so that the clamping structures 222 are close to the cut-off part of the film strip, i.e., the bag opening of the film strip, and the two clamping structures 222 clamp the two sides of the film strip respectively, so as to pull the film strip apart to form a film bag with a square bag opening. It can be understood that, since the clamping structures 222 can slide along the second direction which is parallel to the transport direction of the film strip, the positions at which the clamping structures 222 clamp the film bag can be close to the bag opening of the film bag, so that only one layer of folded film edge is formed when the clamping structures 222 clamp the film bag. In the prior art, the clamping structures 222 are fixedly connected to the connecting plate 221, and the bag opening mechanism 2 is interfered by the sealing and cutting film mechanism 1, so that the clamping structures 222 cannot be close to the cut-off part of the film strip when clamping the film strip, and three layers of folded film edge will be formed when clamping the film, which further leads to that the length of the folded film edge is too long, the bagging is prone to wrinkles, and the production cost is increased.

[0047] In some preferred embodiments, the clamping structure 222 comprises a clamping member 2221 and a second driving member 2222, the clamping member 2221 is slidably connected to the connecting plate 221 along the second direction, and the second driving member 2222 drives the clamping member 2221 to clamp or release the film strip. The first driving member 223 drives the clamping structure 222 to be close to the cut-off part of the film strip, the second driving member 2222 drives the clamping member 2221 to clamp the film strip, the first driving member 223 drives the clamping structure 222 to be away from the sealing and cutting film mechanism 1 again, and the two film pulling assemblies 22 are away from each other, so that the two clamping members 2221 pull the film strip into two film bags respectively.

[0048] In some preferred embodiments, please refer toFigure 3 , Figure 3 The structure relationship of the clamping guide rail 222a, the first clamping jaw 222b and the second clamping jaw 222c in the embodiment of the utility model is shown. The clamping piece 2221 comprises the clamping guide rail 222a, the first clamping jaw 222b and the second clamping jaw 222c, the clamping guide rail 222a is slidably connected to the connecting plate 221, the second driving piece 2222 is fixedly connected to the clamping guide rail 222a, the first clamping jaw 222b is fixedly connected to the second driving piece 2222, the second clamping jaw 222c is slidably connected to the clamping guide rail 222a and is oppositely arranged with the first clamping jaw 222b and forms the clamping area 222d; the clamping pieces 2221 of the two film pulling assemblies 22 are staggered. When clamping the film, the second driving piece 2222 drives the second clamping jaw 222c to slide along the clamping guide rail 222a, so that the second clamping jaw 222c abuts against the first clamping jaw 222b of the oppositely arranged film pulling assembly 22, thereby clamping the film belt. Specifically, the first clamping jaw 222b of the film pulling assembly 22 is located in the clamping area 222d of the oppositely arranged film pulling assembly 22, and / or the second clamping jaw 222c of the film pulling assembly 22 is located in the clamping area 222d of the oppositely arranged film pulling assembly 22.

[0049] In some preferred embodiments, referring to Figure 4 , Figure 4 The structure relationship of the first bag opening assembly 23 and the second bag opening assembly 24 in the embodiment of the utility model is shown. The number of the bag opening mechanism 2 is two, comprising the first bag opening assembly 23 and the second bag opening assembly 24, the first bag opening assembly 23 and the second bag opening assembly 24 are arranged along the third direction, and the third direction is orthogonal to the first direction and the second direction. So that one side of the film belt has two film pulling assemblies 22, which facilitates the film belt to be pulled into a film bag with a quadrangular bag opening, thereby improving the reliability of the overall structure.

[0050] In some preferred embodiments, the first bag opening assembly 23 and the second bag opening assembly 24 can be relatively moved along the third direction. So that the film pulling assembly 22 can adjust the corresponding film clamping position according to the size of different film belts, thereby making the practicability of the overall structure stronger, which can be adapted to different film belts and / or box sizes.

[0051] In some preferred embodiments, the second driving piece 2222 comprises a pneumatic cylinder 222e, the pneumatic cylinder 222e has a piston rod 222f, the pneumatic cylinder 222e is fixedly connected to the clamping guide rail 222a, the first clamping jaw 222b is fixedly connected to the pneumatic cylinder 222e, and the piston rod 222f is connected to the pneumatic cylinder 222e and the second clamping jaw 222c respectively. The pneumatic cylinder 222e drives the piston rod 222f to extend or retract, so that the second clamping jaw 222c slides along the clamping guide rail 222a relative to the first clamping jaw 222b, thereby ensuring the reliability of the clamping piece 2221 clamping the film belt.

[0052] In some more preferable embodiments, the clamping member 2221 further comprises an elastic abutting part 222g, which is coated on the first clamping jaw 222b and / or the second clamping jaw 222c. The friction between the first clamping jaw 222b and / or the second clamping jaw 222c and the film strip is enhanced, so that the first clamping jaw 222b and / or the second clamping jaw 222c can clamp the film bag more firmly.

[0053] Embodiment 2:

[0054] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the bag making and sleeving device of the utility model, please refer to the attached Figure 5 .

[0055] The bag making and sleeving device further comprises a bag supporting mechanism 3 and a third driving member 4, the bag supporting mechanism 3 is slidingly connected to the fixed seat 21, and the third driving member 4 is fixedly connected to the connecting plate 221. The output end of the third driving member 4 is connected to the bag supporting mechanism 3.

[0056] In this embodiment, when the clamping structure 222 of the film pulling assembly 22 clamps the film strip and pulls it apart into a film bag, the third driving member 4 drives the bag supporting mechanism 3 to slide to a preset position, so as to support the film bag, so that the circumference of the film bag is more flat, and then it is convenient to be sleeved into a container such as a box.

[0057] In some preferable embodiments, the bag supporting mechanism 3 comprises a sliding plate 31, a bag supporting plate 32 and a fourth driving member 33. The sliding plate 31 is slidingly connected to the fixed seat 21, the output end of the third driving member 4 is connected to the sliding plate 31, the bag supporting plate 32 is rotatably connected to one end of the sliding plate 31 close to the film strip, and the fourth driving member 33 drives the bag supporting plate 32 to rotate. The third driving member 4 drives the sliding plate 31 to slide to a preset position, and the fourth driving member 33 drives the bag supporting plate 32 to rotate relative to the sliding plate 31, so that the bag supporting plate 32 enters the film bag. The third driving member 4 drives the sliding plate 31 to slide again, so that the bag supporting plate 32 supports the circumference of the film bag, so that the circumference of the film bag is flat.

[0058] Embodiment 3:

[0059] The difference between this embodiment and embodiment 2 is that this embodiment further optimizes the structure of the bag making and sleeving device of the utility model, please refer to the attached Figure 6 .

[0060] The sealing and cutting film mechanism 1 comprises a sealing and cutting film driving member 12, a film pressing driving member 13, and a sealing and cutting film assembly 14 and a film pressing assembly 15 which are movably arranged relative to each other in a first direction. The sealing and cutting film driving member 12 drives the sealing and cutting film assembly 14 to move, and the film pressing driving member 13 drives the film pressing assembly 15 to move, so that the sealing and cutting film assembly 14 and the film pressing assembly 15 move close to or away from each other.

[0061] In the embodiment, the sealing and cutting film assembly 14 and the pressing film assembly 15 cooperate to seal and cut the film strip. Specifically, the sealing film driving member 12 and the pressing film driving member 13 respectively drive the sealing film assembly 14 and the pressing film assembly 15 to move towards each other along the first direction, so as to heat seal and cut the film strip, and after completion, the sealing film driving member 12 and the pressing film driving member 13 again respectively drive the sealing film assembly 14 and the pressing film assembly 15 to move away from each other along the first direction.

[0062] In some preferred embodiments, the sealing and cutting film assembly 14 comprises a sealing and cutting film base 141, a heat sealing cutter 142 and a film cutting cutter 143, the side of the sealing and cutting film base 141 facing the pressing film assembly 15 is sequentially provided with a first mounting groove 1411 and a second mounting groove 1412 from top to bottom, the heat sealing cutter 142 is arranged in the first mounting groove 1411, the film cutting cutter 143 is arranged in the second mounting groove 1412, and the sealing film driving member 12 is drivingly connected to the sealing and cutting film base 141; the pressing film assembly 15 is provided with a position avoiding groove 151 corresponding to the film cutting cutter 143. When the sealing and cutting film assembly 14 and the pressing film assembly 15 cooperate to heat seal and cut the film strip, the heat sealing cutter 142 clamps the film strip to abut against the pressing film assembly 15, and the film cutting cutter 143 enters the position avoiding groove 151 of the pressing film assembly 15 after cutting the film strip, so that the film strip is heat sealed by the heat sealing cutter 142 and then cut by the film cutting cutter 143, thereby forming a film bag with an open end and a closed end.

[0063] The bag making and sleeving device of the utility model, two pull film assemblies 22 are relatively slidably connected to the fixed seat 21 along the first direction, the clamping structures 222 of the pull film assemblies 22 are slidably arranged along the second direction, the second direction is perpendicular to the first direction, the film strip is transmitted to between the two pull film assemblies 22 after being sealed and cut by the sealing and cutting film mechanism 1, the two pull film assemblies 22 relatively slide to the preset position, the first driving member 223 drives the clamping structures 222 to slide along the second direction, so that the clamping structures 222 are close to the cut part of the film strip, and the two clamping structures 222 clamp the two sides of the film strip respectively, so as to pull open the film strip and form a film bag with a square bag opening. Since the clamping structures 222 can slide along the second direction, on the basis of avoiding interference between the bag opening mechanism 2 and the sealing and cutting film mechanism 1, the clamping structures 222 only produce a layer of film folding edge when clamping the film, which avoids the problem that the film folding edge of the film bag is too long, which not only affects the sleeving effect but also increases the production cost.

[0064] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through the intermediate medium, can be two element internal communication or two element mutual action relation.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0065] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and so on is based on the orientation or position relation shown in the drawing, or the orientation or position relation of the utility model product when it is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.In addition, the terms "first", "second", "third" and so on are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0066] In addition, the terms "horizontal", "vertical", "overhang" and so on do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined."Horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0067] In the utility model, unless another definite provision and limitation, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them.Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0068] Although the description of the utility model is combined with the above specific embodiments, it is obvious that many substitutions, modifications and changes can be made by the person skilled in the art according to the above content.Therefore, all such alternatives, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A bag making and sleeving apparatus characterized by, include: The sealing and cutting mechanism (1) has a sealing and cutting station (11) for heat sealing and cutting the film strip. and The bag opening mechanism (2) is located below the sealing and cutting film mechanism (1); The bag opening mechanism (2) includes a fixed base (21) and two film pulling assemblies (22) that are slidably connected to the fixed base (21) along a first direction, and the two film pulling assemblies (22) are respectively located on both sides of the sealing and cutting station (11); The film stretching assembly (22) includes a connecting plate (221), a clamping structure (222), and a first driving member (223). The connecting plate (221) is slidably connected to the fixed base (21) along a first direction, and the clamping structure (222) is slidably connected to the connecting plate (221) along a second direction, which is perpendicular to the first direction. The first driving member (223) drives the clamping structure (222) to slide in the second direction, which is parallel to the transmission direction of the film strip at the sealing and cutting station (11).

2. The bag-in-bag apparatus according to claim 1, characterized by The clamping structure (222) includes a clamping member (2221) and a second driving member (2222). The clamping member (2221) is slidably connected to the connecting plate (221) along a second direction. The second driving member (2222) drives the clamping member (2221) to clamp or release the film strip.

3. The bag-in-bag apparatus according to claim 2, wherein The clamping member (2221) includes a clamping guide rail (222a), a first clamping jaw (222b), and a second clamping jaw (222c). The clamping guide rail (222a) is slidably connected to the connecting plate (221). The second driving member (2222) is fixedly connected to the clamping guide rail (222a). The first clamping jaw (222b) is fixedly connected to the second driving member (2222). The second clamping jaw (222c) is slidably connected to the clamping guide rail (222a) and is arranged opposite to the first clamping jaw (222b) and forms a clamping area (222d). The clamping members (2221) of the two film stretching assemblies (22) are staggered.

4. The bag-in-bag apparatus according to claim 1, wherein The number of the bag opening mechanism (2) is two, including a first bag opening component (23) and a second bag opening component (24). The first bag opening component (23) and the second bag opening component (24) are arranged at intervals along a third direction, which is orthogonal to the first direction and the second direction.

5. The bag-in-bag apparatus according to claim 4, wherein The first bag opening component (23) and the second bag opening component (24) are movable relative to each other in a third direction.

6. The bag-in-bag apparatus according to claim 3, wherein The second driving member (2222) includes a cylinder (222e), the cylinder (222e) having a piston rod (222f), the cylinder (222e) being fixedly connected to the clamping guide rail (222a), the first gripper (222b) being fixedly connected to the cylinder (222e), and the piston rod (222f) being connected to the cylinder (222e) and the second gripper (222c) respectively.

7. The bag-in-bag apparatus according to claim 3, wherein The clamping piece (2221) further comprises an elastic abutting part (222g) which is covered on the first clamping jaw (222b) and / or the second clamping jaw (222c).

8. The bag-in-bag apparatus according to claim 1, wherein The bag supporting mechanism (3) is slidingly connected to the fixing seat (21), and the third driving member (4) is fixedly connected to the connecting plate (221), and the output end of the third driving member (4) is connected to the bag supporting mechanism (3).

9. The bag-in-bag apparatus according to claim 8, wherein The bag supporting mechanism (3) comprises a sliding plate (31), a bag supporting plate (32) and a fourth driving member (33), the sliding plate (31) is slidingly connected to the fixing seat (21), the output end of the third driving member (4) is connected to the sliding plate (31), the bag supporting plate (32) is rotatably connected to one end of the sliding plate (31) close to the film belt, and the fourth driving member (33) drives the bag supporting plate (32) to rotate.

10. The bag-in-bag apparatus according to claim 1, wherein The sealing and cutting film mechanism (1) comprises a sealing and cutting film driving member (12), a film pressing driving member (13), and a sealing and cutting film assembly (14) and a film pressing assembly (15) which are relatively movably arranged in a first direction, the sealing and cutting film driving member (12) drives the sealing and cutting film assembly (14) to move, and the film pressing driving member (13) drives the film pressing assembly (15) to move, so that the sealing and cutting film assembly (14) and the film pressing assembly (15) are close to or away from each other.

11. The bag-in-bag apparatus according to claim 10, wherein The sealing and cutting film assembly (14) comprises a sealing and cutting film base (141), a heat sealing cutter (142) and a film cutting cutter (143), one side of the sealing and cutting film base (141) facing the film pressing assembly (15) is sequentially provided with a first mounting groove (1411) and a second mounting groove (1412) from top to bottom, the heat sealing cutter (142) is arranged in the first mounting groove (1411), the film cutting cutter (143) is arranged in the second mounting groove (1412), and the sealing and cutting film driving member (12) is drivingly connected to the sealing and cutting film base (141). The film pressing assembly (15) is provided with a position avoiding groove (151) corresponding to the film cutting cutter (143) for avoiding the film cutting cutter (143).