CN218906474U

CN218906474U - Secondary opening removing device

Info

Publication number: CN218906474U
Application number: CN202222024995.8U
Authority: CN
Inventors: 王榴根
Original assignee: Wang Kanqi
Current assignee: Wang Kanqi
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-04-25
Anticipated expiration: 2032-08-02
Also published as: WO2024027757A1

Abstract

The utility model provides a secondary shedding device, which comprises a support frame, a bearing assembly, an upper sucker assembly, a lower sucker assembly, a first driving assembly, a deflector rod and a second driving assembly, wherein the bearing assembly is connected to the support frame and is provided with a bearing surface; the upper sucker assembly is movably arranged above the bearing surface along the height direction, and is correspondingly arranged with the end part of the bearing surface along the length direction; the lower sucker assembly is connected to the bearing surface and is arranged opposite to the upper sucker assembly; the first driving component is connected to the upper sucker component and used for driving the upper sucker component to move along the height direction; the deflector rod is rotatably arranged above the bearing surface around the rotation central axis; the second driving assembly is connected to the deflector rod and used for driving the deflector rod to rotate around the rotation central axis. The utility model can ensure that the end bag mouth of the woven bag can be reliably separated, thereby being beneficial to improving the yield of the inner bag in the production process of the double-layer bag.

Description

Secondary opening removing device

Technical Field

The present utility model relates generally to the technical field of packaging bag production equipment, and more particularly to a secondary take-off device.

Background

The woven bag is cut in a hot cutting mode. The open ends of the woven bags after hot cutting are bonded to different degrees, so that the open ends of the woven bags are not easy to open by the woven bags. At present, a mouth rubbing device (such as a rubbing roller) at two ends of a hot melt knife is generally adopted to rub and open a bag mouth, so that preparation is made for sleeving an inner film bag in the next process. However, after the rolling and rubbing treatment, the situation that the bag mouth is partially adhered still exists, the two ends of the bag mouth cannot be ensured to be communicated, the failure of the inner bag of the sleeve is easy to occur, and the qualification rate is reduced.

Accordingly, there is a need to provide a secondary shedding device to at least partially solve the above-mentioned problems.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above problems, the present utility model provides a secondary shedding device comprising:

A support frame;

a carrier assembly connected to the support frame, the carrier assembly having a carrier surface for carrying the hot cut woven bag;

the upper sucker assembly is movably arranged above the bearing surface along the height direction, the upper sucker assembly is correspondingly arranged with the end part of the bearing surface along the length direction, the height direction is perpendicular to the bearing surface, the length direction is perpendicular to the height direction, and the upper sucker assembly is used for adsorbing the upper bag surface of the woven bag;

the lower sucker assembly is connected to the bearing surface and is arranged opposite to the upper sucker assembly, and the lower sucker assembly is used for adsorbing the lower bag surface of the woven bag;

the first driving assembly is connected to the upper sucker assembly and used for driving the upper sucker assembly to move along the height direction;

the deflector rod is rotatably arranged above the bearing surface around a rotation central axis parallel to the height direction and is used for pulling out the bag opening of the woven bag; and

and the second driving assembly is connected to the deflector rod and used for driving the deflector rod to rotate around the rotation central axis.

Optionally, the shift lever rotates around the rotation central axis between a first position and a second position, the rotation central axis is located on the outer side of the upper sucker assembly along the length direction, and the projection of the rotation track of the shift lever on the bearing surface is partially located in a positioning area where the bearing surface positions the woven bag;

the deflector rods positioned at the first position and the second position are positioned on the outer side of the positioning area along the length direction.

Optionally, an end portion of the bearing surface along the length direction is provided with a gap portion for air flow to pass through, the gap portion is located in the middle of the bearing surface along the width direction, the lower sucker assembly is connected to the bearing surface around the gap portion in a sealing manner, and the width direction is perpendicular to the length direction and the height direction.

Optionally, the upper sucker assembly includes a first upper sucker and a second upper sucker, and projections of the first upper sucker and the second upper sucker on the bearing surface are respectively located at two ends of the positioning area along the length direction;

the lower sucker assembly comprises a first lower sucker and a second lower sucker, wherein the first lower sucker is positioned below the first upper sucker, and the second lower sucker is positioned below the second upper sucker.

Optionally, the hollow portion includes a first hollow portion configured as a suction hole of the first lower suction cup and a second hollow portion configured as a receiving opening for at least partially receiving the second lower suction cup, an upper surface of the first lower suction cup and an upper surface of the second lower suction cup being both flush with the bearing surface.

Optionally, two groups of the shift levers are provided, and the two groups of the shift levers respectively correspond to the first upper sucker and the second upper sucker.

Optionally, the first upper sucker and an adjacent group of the shift levers are movably connected to the supporting frame along the length direction;

the secondary shedding device further comprises:

the adjusting assembly is respectively connected to the first upper sucker and an adjacent group of deflector rods so as to adjust the distance between the first upper sucker and the second upper sucker;

and the locking component is arranged on the supporting frame and used for limiting the first upper sucker and the adjacent group of deflector rods to move.

Optionally, the secondary shedding device further comprises:

the movable cross beam is arranged along the width direction and is movably connected to the support frame along the length direction, and the first upper sucker and an adjacent group of deflector rods are connected to the movable cross beam;

The adjustment assembly includes:

the nut seat is connected to the movable cross beam;

the screw rod is pivotally connected to the nut seat around the axis of the screw rod, the screw rod is in threaded fit with the nut seat, and the axis of the screw rod is parallel to the length direction.

Optionally, the locking assembly includes:

a first locking aperture configured to extend radially inward from an outer wall of the nut seat to an inner wall of the nut seat;

the first locking bolt is connected to the first locking hole, and in the process of rotating the first locking bolt, the first locking bolt can abut against the outer surface of the screw rod so as to limit the screw rod to rotate.

Optionally, the upper suction cup assembly includes:

the lower surface of the sucker body is provided with an upper suction hole for adsorbing the woven bag;

the pressing plate is arranged at two ends of the sucker body along the width direction, and the lower surface of the pressing plate is flush with the lower surface of the sucker body.

Optionally, the same group of the shift levers includes two shift levers, the shift levers are respectively connected to the two second driving assemblies in a one-to-one correspondence, and the two shift levers respectively correspond to two ends of the bearing surface in the width direction.

Optionally, the second driving assembly is configured as a rotary cylinder, an output shaft of the rotary cylinder is connected to the deflector rod, and an axis of the output shaft of the rotary cylinder is configured as the rotation central axis; and/or

The first driving assembly is configured as a linear cylinder, and a piston rod of the linear cylinder is connected to the upper sucker assembly.

Optionally, the rotating cylinder drives the shift lever to rotate in an angle range of 180 °, when the shift lever is located at the first position, two shift levers of the same group are close to each other, and a length direction of the shift lever is parallel to the width direction.

Optionally, the two shift levers of the same group are staggered along the height direction.

Optionally, the secondary shedding device further comprises:

a connector connected to an output shaft of the rotary cylinder, the connector having a mounting hole for penetrating the lever and a second locking hole provided intersecting the mounting hole;

the second locking bolt is connected in the second locking hole and is in threaded fit with the second locking hole, and in the process of rotating the second locking bolt, the second locking bolt can be abutted to the outer surface of the deflector rod so as to limit the deflector rod to move in the mounting hole.

Optionally, the lever includes:

a lever body having one end corresponding to the rotation center axis;

the poking part is arranged along the length direction of the rod body, one end of the poking part is connected to the other end of the rod body, the poking part is constructed into a flexible and elastic rubber sleeve, and the poking part is used for contacting and poking the adhesion part of the bag opening of the woven bag.

Optionally, at least one of the two second driving assemblies is movably disposed to the supporting frame in the width direction;

the secondary shedding device further comprises:

a third lock bolt connected to the second drive assembly, the second lock bolt detachably connected to the support bracket to allow fastening of the second drive assembly to the support bracket.

According to the secondary shedding device, the woven bags subjected to hot cutting are borne through the bearing surface on the bearing component; an upper sucker assembly is arranged above the end part of the bearing surface along the length direction, and can move along the height direction so as to be close to and far away from the bearing surface, and the upper sucker assembly close to the bearing surface can adsorb the upper bag surface of the woven bag on the bearing surface; the lower sucker component is connected with the bearing surface and corresponds to the upper sucker component and is used for adsorbing the lower bag surface of the woven bag positioned on the bearing surface. Through the cooperation of upper sucking disc subassembly and lower sucking disc subassembly, can adsorb the upside pocket face and the downside pocket face that are located the sack of braided bag on the bearing surface respectively to make upside pocket face and downside pocket face keep away from each other, thereby make the bonding of sack be in can be separated to a certain extent. And, through setting up the driving lever around the rotation center line rotation, can dial the tip of braided bag for the tip adhesion department of braided bag is separated. Through the cooperation of last sucking disc subassembly, lower sucking disc subassembly and driving lever, can ensure that the tip sack of braided bag can be separated reliably, and then help improving the yield of cover inner bag in the production process of double-deck bag.

Drawings

The following drawings of embodiments of the present utility model are included as part of the utility model. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

fig. 1 is a front view of a secondary shedding device according to a preferred embodiment of the present utility model;

FIG. 2 is a top view of the secondary shedding device shown in FIG. 1, with the lever in a first avoidance position;

FIG. 3 is an enlarged view of section I of FIG. 2;

FIG. 4 is a right side view of the secondary shedding device shown in FIG. 1;

FIG. 5 is a bottom view of the secondary shedding device shown in FIG. 1;

FIG. 6 is a perspective view of the secondary shedding device shown in FIG. 1;

FIG. 7 is an enlarged view of section II of FIG. 6;

FIG. 8 is an enlarged view of portion III of FIG. 6; and

fig. 9 is a perspective view of the connection structure of the rotary cylinder and the dial in fig. 1 to 4 and fig. 7 and 8.

Reference numerals illustrate:

100: support frame 101: end longitudinal beam

102: end beam 103: end column

110: the carrier assembly 111: bearing surface

1111: first void 1112: second empty part

120: upper chuck assembly 121: first upper sucker

122: second upper suction cup 1211: sucker body

1212: platen 1212a: lightening hole

130: lower chuck assembly 131: first lower sucker

132: the second lower suction cup 140: driving lever

141: the lever body 142: dialing part

150: movable cross beam 151: nut seat

152: screw 153: first locking bolt

154: hand wheel 155: sliding rail

156: slider 160: fixed cross beam

170: the linear cylinder 180: rotary cylinder

181: connector 181a: second locking hole

184: corner plate 184a: third locking hole

AX1: the rotation center axis D1: in the length direction

D2: width direction D3: height direction

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that embodiments of the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the utility model.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model, as the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like are used herein for illustrative purposes only and are not limiting.

Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component".

Hereinafter, specific embodiments of the present utility model will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present utility model and not limit the present utility model.

The utility model provides a secondary shedding device. As shown in fig. 1 to 9, the secondary shedding device according to the present utility model includes a support frame 100, a bearing assembly 110, an upper suction cup assembly 120, a lower suction cup assembly 130, a first driving assembly, a lever 140, and a second driving assembly. The carrier assembly 110 is connected to the support frame 100. The carrier assembly 110 has a carrier surface 111 for carrying the hot cut woven bag. The upper chuck assembly 120 is movably disposed above the bearing surface 111 in the height direction D3. The upper sucker moves downwards to be close to the bearing surface 111, so that the upper bag surface of the woven bag placed on the bearing surface 111 can be adsorbed; the upward movement of the upper suction cup away from the bearing surface 111 may allow the woven bag to be moved between the upper suction cup assembly 120 and the bearing surface 111 or removed from the upper suction cup assembly 120 and the bearing surface 111. The upper suction cup assembly 120 is disposed corresponding to an end of the bearing surface 111 in the length direction D1 so that the upper suction cup can correspond to an end of the woven bag placed on the bearing surface 111 in the length direction D1. The height direction D3 is perpendicular to the bearing surface 111. The length direction D1 is perpendicular to the height direction D3. The lower chuck assembly 130 is coupled to the bearing surface 111 and is disposed opposite the upper chuck assembly 120. The lower suction cup assembly 130 is used for sucking the lower side bag surface of the woven bag. When the upper sucker assembly 120 is close to the woven bag, and the upper sucker assembly 120 and the lower sucker assembly 130 adsorb the upper bag surface and the lower bag surface of the woven bag respectively, the end part of the woven bag can be opened to a certain extent. If the adhesion condition of the ends of the woven bag after hot cutting is not too serious, the adhesion of the ends of the woven bag can be completely separated by the upper suction cup assembly 120 and the lower suction cup assembly 130. The first driving assembly is connected to the upper chuck assembly 120 for driving the upper chuck assembly 120 to move along the height direction D3. The lever 140 is rotatably disposed above the bearing surface 111 about a rotation center axis AX1 parallel to the height direction D3. The shift lever 140 is used for shifting open the mouth of the woven bag. The second driving assembly is connected to the shift lever 140 for driving the shift lever 140 to rotate about the rotation center axis AX 1.

According to the secondary shedding device of the present utility model, the woven bag after hot cutting is carried by the carrying surface 111 on the carrying assembly 110. An upper suction cup assembly 120 is provided above an end of the bearing surface 111 in the length direction D1, and the upper suction cup assembly 120 is movable in the height direction D3 to achieve approaching and separating from the bearing surface 111. The upper suction cup assembly 120 near the bearing surface 111 is capable of sucking the upper side pocket face of the woven bag located on the bearing surface 111. The lower suction cup assembly 130 is connected to the carrying surface 111 and corresponds to the upper suction cup assembly 120 for sucking a lower side bag surface of the woven bag located on the carrying surface 111. Through the cooperation of the upper suction cup assembly 120 and the lower suction cup assembly 130, the upper side pocket face and the lower side pocket face of the pocket mouth of the woven bag located on the bearing surface 111 can be respectively adsorbed, so that the upper side pocket face and the lower side pocket face are far away from each other, and the bonding of the pocket mouth can be separated to a certain extent. In addition, by providing the lever 140 that rotates around the rotation center line, the end portion of the woven bag can be separated, so that the end portion adhesion portion of the woven bag is separated. Through the cooperation of the upper sucker assembly 120, the lower sucker assembly 130 and the deflector rod 140, the end bag mouth of the woven bag can be reliably separated, and the yield of the inner bag of the sleeve can be improved in the production process of the double-layer bag.

See fig. 2, 3 and 6-8. For example, the lever 140 is rotatable about the rotation center axis AX1 between a first position and a second position. The rotation center axis AX1 is located outside the upper chuck assembly 120 in the length direction D1. The bearing surface 111 has a positioning area for positioning the woven bag, the shape and size of the positioning area are matched with those of the woven bag, and the length direction D1 of the positioning area is consistent with the length direction D1 of the bearing surface 111. It will be appreciated that the location area is within the boundary of the bearing surface 111. For example, the positioning area may be uniform in size with the bearing surface 111 or may be smaller than the bearing surface 111. The projection of the rotation track of the shift lever 140 on the bearing surface 111 is partially located in the positioning area, so that the shift lever 140 can be ensured to pass through the bag opening of the woven bag in the rotation process, and further when the upper sucker assembly 120 and the lower sucker assembly 130 prop open a part of the bag opening of the woven bag, the shift lever 140 can extend into the bag opening to shift apart the adhesion parts of the rest parts. The shift lever 140 located at the first position and the second position is located outside the positioning area along the length direction D1. Since the rotation central axis AX1 is located outside the upper chuck assembly 120, either one of the levers 140 located at the first and second positions may be parallel to the width direction D2 of the bearing surface 111 or slightly inclined to the width direction D2 of the bearing surface 111. This ensures that the woven bag is prevented from interfering with the lever 140 as it is moved to and from the bearing surface 111.

See fig. 2, 3 and 6-8. In addition, the end of the bearing surface 111 in the length direction D1 may be provided with a hollow portion through which the air flow passes. The hollow portion is located in the middle of the bearing surface 111 in the width direction D2. The lower suction cup assembly 130 is arranged in correspondence with the void and is sealingly connected to the bearing surface 111 around the void. The width direction D2 is perpendicular to the length direction D1 and the height direction D3, and the width direction D2 and the length direction D1 are two different directions set in the horizontal direction, respectively. The suction holes of the lower suction cup are adapted to the arrangement range of the hollow portion, and when the lower suction cup assembly 130 generates negative pressure suction force, air flow can flow from the position of the hollow portion to the lower suction cup assembly 130 from top to bottom, so that suction can be performed on the woven bag positioned on the carrying surface 111.

See fig. 1-8. For example, upper chuck assembly 120 may include a first upper chuck 121 and a second upper chuck 122. The projections of the first upper suction cup 121 and the second upper suction cup 122 on the carrying surface 111 are located at both ends of the positioning area in the length direction D1, respectively. The lower chuck assembly 130 includes a first lower chuck 131 and a second lower chuck 132. The first lower suction cup 131 is correspondingly disposed below the first upper suction cup 121. The second lower suction cup 132 is correspondingly disposed below the second upper suction cup 122. With respect to the definition of the boundary of the positioning area, it is understood that the projections of the first upper suction cup 121 and the second upper suction cup 122 on the carrying surface 111 define the positions of both ends of the positioning area in the length direction D1. In other words, after the distance between the first upper suction cup 121 and the second upper suction cup 122 in the length direction D1 is determined, the length size of the woven bag to which the secondary shedding device is applied can be determined. Meanwhile, by adopting the scheme, the two ends of the woven bag in the length direction D1 can be respectively adsorbed, so that the end opening of the woven bag can be at least partially opened.

See fig. 1-8. Further, the void may include a first void 1111 and a second void 1112. The first void 1111 is configured as a suction hole of the first lower suction cup 131. That is, the suction surface of the first lower suction cup 131 is configured as a part of the bearing surface 111. The second recess 1112 is configured to at least partially receive a receiving port of the second lower suction cup 132. The second lower suction cup 132 is flush with the bearing surface 111 on the upper surface of the second lower suction cup 132 after being fitted into the receiving opening.

See fig. 1-6, and fig. 8. When one end of the woven bag is adsorbed by the first upper suction cup 121 and the first lower suction cup 131, the other end of the woven bag is adsorbed by the second upper suction cup 122 and the second lower suction cup 132. For example, the lever 140 may be provided with two sets. Two sets of levers 140 correspond to the first upper suction cup 121 and the second upper suction cup 122, respectively. By providing two sets of levers 140, the two ends of the woven bag in the longitudinal direction D1 can be reliably separated by being better matched with the two sucking discs.

See fig. 1-8. In order to enable the bag openings of woven bags of different length sizes to be subjected to a pulling process, it is preferable that the first upper suction cup 121 and the adjacent set of pulling bars 140 are movably connected to the support frame 100 in the length direction D1.

See fig. 1-8. The secondary shedding device can also comprise an adjusting component and a locking component. The adjusting components are respectively connected to the first upper sucker 121 and the adjacent group of deflector rods 140 to adjust the distance between the first upper sucker 121 and the second upper sucker 122 and the distance between the two groups of deflector rods 140, so as to adapt to the poking requirements of the end adhesion parts of woven bags with different lengths. A locking assembly is provided to the support frame 100 for restricting movement of the first upper suction cup 121 and the adjacent set of levers 140, thereby defining a woven bag having a corresponding length to which the spacing of the first upper suction cup 121 and the second upper suction cup 122 is adapted.

See fig. 1-8. In addition, the secondary shedding device further comprises a fixed beam 160 and a movable beam 150. The fixed beam 160 and the movable beam 150 are each disposed along the width direction D2. The fixed beam 160 is fixedly coupled to the support frame 100. The movable cross member 150 is movably connected to the support frame 100 in the length direction D1. The first upper suction cup 121 and an adjacent set of levers 140 are connected to a movable cross member 150. The adjustment assembly includes a nut mount 151 and a screw 152. The nut seat 151 is connected to the movable cross member 150. The screw 152 is pivotably connected to the nut seat 151 about its own axis, and the screw 152 is screw-fitted with the nut seat 151. The axis of the screw 152 is parallel to the length direction D1. For example, the sliding blocks 156 are mounted at two ends of the movable beam 150, and the sliding rails 155 are mounted on the supporting frame 100, so that the extending direction of the sliding rails 155 is consistent with the length direction D1, and the movable beam 150 can move along the length direction D1 together with the first upper suction cup 121 and the group of levers 140. Meanwhile, a nut seat 151 may be added to the support frame 100 to connect and support the other end of the screw 152.

See fig. 1 to 6, and fig. 8. To facilitate rotation of the screw 152, a hand wheel 154 may be mounted at the end of the screw 152 remote from the second upper suction cup 122.

See fig. 2, 3, 5, 6 and 8. Since the first lower suction cup 131 is disposed corresponding to the first upper suction cup 121, the distribution range of the lower suction holes on the first lower suction cup 131 along the length direction D1 can be adapted to the movement range of the first upper suction cup 121 along the length direction D1 along the movable cross beam 150.

It is understood that, as a modification, the first lower suction cup 131 may be movably disposed along the length direction D1. Accordingly, a void area may be provided in the bearing surface 111 for at least partially accommodating the first lower suction cup 131 and adapting the movement of the first lower suction cup 131 in the length direction D1.

See fig. 1-6, and fig. 8. Further, the locking assembly may include a first locking hole and a first locking bolt 153. The first locking hole may be configured to extend radially inward from an outer wall of the nut seat 151 to an inner wall of the nut seat 151. The first locking bolt 153 is coupled in the first locking hole. During the rotation of the first locking bolt 153, the first locking bolt 153 can abut to the outer surface of the screw 152, so that the screw 152 can be restricted from rotating.

See fig. 2-4, and fig. 6-8. In addition, the upper chuck assembly 120 includes a chuck body 1211 and a platen 1212. The suction cup body 1211 has an upper suction hole on a lower surface thereof for sucking the woven bag. The pressing plates 1212 are disposed at both ends of the suction cup body 1211 in the width direction D2. The lower surface of the platen 1212 is flush with the lower surface of the suction cup body 1211. In other words, the upper chuck assembly 120 is disposed along the width direction D2 of the bearing surface 111, the chuck body 1211 is located at the middle, and the pressing plates 1212 are located at both ends. In use, the suction cup body 1211 is used to effect suction of the upper side bag face of the woven bag by negative pressure suction. When the upper sucker assembly 120 approaches or even approaches to the woven bag, the pressing plate 1212 and the lower surface of the sucker body 1211 together apply downward force to the woven bag, so that the end of the woven bag is flat, thereby preventing the woven bag from being folded and not being reliably absorbed by the sucker body 1211, and further helping to improve the absorption effect of the upper sucker assembly 120. Meanwhile, after the adhered portion of the mouth of the woven bag is completely separated, the upper suction cup assembly 120 may be brought close to the bearing surface 111 again while releasing the negative pressure suction force of the upper suction cup assembly 120. Therefore, the end part of the woven bag is flattened while the woven bag is desorbed, so that the woven bag can flow to the next process in a relatively flat posture, and the yield of the subsequent process is improved. Either of the first upper suction cup 121 and the second upper suction cup 122 may employ the configuration of the upper suction cup assembly 120 herein. The configuration of the first upper suction cup 121 and the second upper suction cup 122 may be the same.

See fig. 2 and 3, and fig. 6-8. In order to reduce the weight of the platen 1212 and reduce the resistance to separation of the woven bag from the platen 1212, weight reducing holes 1212a may be provided on the platen 1212. The shape of the lightening hole 1212a includes, but is not limited to, a circular hole and an oblong hole.

See fig. 2-4, and fig. 6-8. Furthermore, the same set of levers 140 may include two levers 140. The two levers 140 are respectively connected to the two second driving assemblies in a one-to-one correspondence. The two levers 140 correspond to both ends of the width direction D2 of the bearing surface 111, respectively. By configuring the same group of shift levers 140 into two shift levers 140, the two shift levers 140 can respectively shift the two ends of the bag opening width direction D2 of the woven bag, and then reliable shifting operation can be carried out on the two ends of the bag opening width direction D2 of the woven bag, so that the bag opening adhesion part of the woven bag can be reliably separated. Because the adhesion degree of the middle part of the bag mouth after the hot cut woven bag is rubbed by the mouth rubbing device is lighter than that of the end part, the upper sucker assembly 120 and the lower sucker assembly 130 are matched and spread for a certain size in the middle part of the bag mouth, and the deflector rod 140 stretches into the belt from the spread opening and sweeps to the two ends, so that the purpose of further separating the part of the end part of the bag mouth and even the part of the adhesion part of the middle part is realized.

See fig. 1-8. For example, the first drive assembly may be configured as a linear cylinder 170. The piston rod of the linear cylinder 170 is connected to the upper chuck assembly 120. By activating the linear cylinder 170 such that the piston rod of the cylinder extends downwardly, the upper chuck assembly 120 is brought closer to the bearing surface 111. The second drive assembly may be configured as a rotary cylinder 180. The output shaft of rotary cylinder 180 is connected to toggle 140. The axis of the output shaft of the rotary cylinder 180 is configured as a rotation center axis AX1. The actuation timing of the rotary cylinder 180 may be when the upper chuck assembly 120 is raised to the upper limit position. The upper chuck assembly 120 at the upper limit position is at a higher level than the lever 140. In this way, when the upper suction cup assembly 120 and the lower suction cup assembly 130 cooperate to open the middle of the mouth of the woven bag, the deflector rod 140 can reliably extend into the bag to perform the pulling-apart of the adhesion part of the mouth of the bag.

See fig. 1-8. For example, the rotation cylinder 180 may drive the lever 140 to rotate in an angular range of 180 °. When the levers 140 are in the first position, two levers 140 of the same group are close to each other and the length direction D1 of the levers 140 may be parallel to the width direction D2. When the rotary cylinder 180 is operated, the driving lever 140 is driven to enter from the middle of the pocket opening, then moves towards the two ends, and finally moves out of the pocket opening from the two ends. Since the position of the rotary cylinder 180 along the length direction D1 and the width direction D2 relative to the positioning area can have a certain influence on the moving track and the range of the shift lever 140 in the positioning area, the position of the rotary cylinder 180 needs to be adjusted in advance according to the size and the boundary of the positioning area before use, so that the reliable shifting of the bag opening is achieved, and the shift lever 140 is prevented from interfering with the woven bag to damage the woven bag.

Alternatively, two levers 140 of the same group may be staggered in the height direction D3 so as to prevent the two levers 140 from interfering when they are close to each other.

See fig. 1 and 4, and fig. 6 to 9. In addition, the secondary shedding device may further include a connector 181 and a second locking bolt. The connector 181 is connected to an output shaft of the rotary cylinder 180. The connector 181 has a mounting hole for penetrating the lever 140 and a second locking hole 181a provided to intersect the mounting hole. The second locking bolt is connected in the second locking hole 181a and is in threaded engagement with the second locking hole 181a. During the process of rotating the second locking bolt, for example, the second locking bolt is rotated along the direction of tightening the second locking bolt, the second locking bolt can be abutted to the outer surface of the deflector rod 140, so that the purpose of limiting the deflector rod 140 to move in the mounting hole along the hole depth direction of the mounting hole is achieved. By rotating the second lock bolt in a direction to unscrew the second lock bolt until the second lock bolt is disengaged from the outer surface of the lever 140, the lever 140 can be allowed to move within the mounting hole, so that the length of the working portion of the lever 140 at the adhered portion of the opening of the dial bag can be adjusted, and the dial range of the lever 140 can be adjusted.

See fig. 9. Further, the lever 140 may include a lever body 141 and a dial portion 142. One end of the lever body 141 corresponds to the rotation center axis AX 1. The dial portion 142 is provided along the length direction D1 of the lever body 141. One end of the dial portion 142 is connected to the other end of the lever body 141. The poking part 142 may be configured as a flexible and elastic gum cover, and the poking part 142 is used for contacting and poking out the adhesion part of the bag mouth of the woven bag. The provision of the flexible and elastic rubber sleeve as the portion has the advantage of enabling the distal end of the lever 140 to contact the end of the pocket in the width direction D2 as much as possible, thereby further ensuring that the end of the pocket can be completely separated without damaging the end of the pocket, and preventing the remaining adhesive portion from being present due to the inability of the lever 140 to reach. In one step, if the dial portion 142 is made of a rigid material, such as a metal rod, the woven bag is likely to be damaged. The reason is that the woven bag is flexible, and the size of the opening that is opened is likely to be different each time the upper suction cup assembly 120 and the lower suction cup assembly 130 cooperate to open the mouth of a different woven bag, so that the position of the end of the mouth of each time may be different, and the poking portion 142 made of rigid material cannot be well adapted to the posture of the mouth of each time, thereby increasing the probability of damaging the woven bag. Of course, if the opening size opened by suction of the suction cup is uniform each time by other effective means, and the end position and posture of the pocket mouth in the width direction D2 are uniform each time, the dial portion 142 may be constructed of a rigid material.

See fig. 1-8. In some application scenarios of the present utility model, it may be necessary to perform a secondary shedding process on the mouth of woven bags of different width dimensions. In this regard, at least one of the two second driving assemblies is movably provided to the supporting frame 100 in the width direction D2. The two second driving assemblies herein may be understood as two second driving assemblies located at the same end in the length direction D1, such as two second driving assemblies corresponding to two levers 140 of the same group. The secondary shedding device of the utility model may further comprise a third locking bolt. The third lock bolt is connected to the second drive assembly. The second locking bolt is detachably connected to the support bracket 100 to allow fastening and unlocking of the second drive assembly to the support bracket 100. The second driving component may be, for example, the rotary cylinder 180 described above, where the rotary cylinder 180 is connected to the shift lever 140, and the position of the rotary cylinder 180 defines the position of the rotation center of the shift lever 140. By adjusting the position of the rotary cylinder 180 along the width direction D2, the bag mouth shifting requirements of woven bags with different width sizes can be met.

See fig. 1-4, and fig. 6-9. In the illustrated embodiment, the revolving cylinder 180 is mounted to the movable cross member 150 by a gusset 184. The movable beam 150 may be an aluminum profile with a closed groove on four sides. The bolt cover of the third locking bolt is connected in the groove, and can move along the groove length direction of the groove when the nut matched with the locking bolt is unscrewed. One of the plates of the corner plate 184 is used for mounting the rotary cylinder 180, and the other plate of the corner plate 184 is provided with a third locking hole 184a. The third locking hole 184a may be configured as an oblong hole extending in the height direction D3. The third lock bolt passes through the third lock hole 184a to install the nut. The lock nut is used for locking the position of the rotary cylinder 180, and unscrewing the nut can move the rotary cylinder 180 along the width direction D2, so that the position of the rotary cylinder 180 is adjusted. In general, the position of the rotary cylinder 180 in the width direction D2 near the next process may be fixed, and the rotary cylinder 180 in the width direction D2 near the previous process may be provided to be position-adjustable using this embodiment.

See fig. 1-8. The carrier assembly 110 may be configured as a horizontally disposed carrier plate. The upper surface of the carrier plate is taken as the carrier surface 111. The bearing plate is a rectangular plate. The support frame 100 may include end stringers 101, end cross-beams 102, and end uprights 103. The four end upright posts 103 are arranged, and the four end upright posts 103 are respectively and vertically fixed at four corner parts of the bearing plate. The end stringers 101 are provided in two, the two end stringers 101 are respectively arranged above the two ends of the carrier plate in the width direction D2 correspondingly, and the two ends of the end stringers 101 are respectively connected to the two adjacent end posts 103. The two end beams 102 are respectively and correspondingly arranged above the two ends of the bearing plate in the length direction D1, and the two ends of the end beams 102 are respectively connected to the two adjacent end posts 103. The movable cross beam 150 is parallel to the end cross beam 102, and two ends of the movable cross beam 150 are respectively connected with a sliding block 156, and a sliding rail 155 is installed on the end longitudinal beam 101. The fixed beam 160 described above may be configured as the end beam 102 herein. The end stringers 101, the bearing surface 111 and the end posts 103 adjacent to the end stringers 101 enclose a rectangular mouth between them through which the woven bag can pass. The material port near the previous process may be referred to as a material inlet, and the material port near the next process may be referred to as a material outlet. The end cross beam 102, the end longitudinal beam 101 and the end upright 103 can be all made of an aluminum profile rod in the prior art, the external profile of the section of the aluminum profile rod is square, and four surfaces parallel to the length direction of the rod are all provided with grooves. The grooves are all convergent in cross section of the aluminum profile, for example, the grooves can be configured as, but not limited to, dovetail grooves or T-shaped grooves. The linear cylinder 170 as the first driving unit may be mounted on the support frame 100 by bolts through a connection plate.

See fig. 1-9. The first upper suction cup 121, the second upper suction cup 122, the first lower suction cup 131 and the second lower suction cup 132 according to the present utility model may be welded using metal plates and have air tightness in terms of manufacturing process. When the secondary shedding device is applied, negative pressure equipment capable of providing negative pressure air flow can be configured and connected to the first upper sucker 121, the second upper sucker 122, the first lower sucker 131 and the second lower sucker 132 through air channel pipe fittings respectively, and electromagnetic valves are arranged on different air channel pipe fittings. The controlled end of each solenoid valve may be connected to a control device. Meanwhile, solenoid valves can be arranged on the air path pipe fittings of the rotary air cylinder 180 and the linear air bar, and each solenoid valve is also connected to the control device. The control device is internally provided with a preset control program, and controls the opening and closing states and the opening and closing sequences of all electromagnetic valves according to the control program, so that the purpose of respectively controlling the running states of the first upper sucker 121, the second upper sucker 122, the first lower sucker 131, the second lower sucker 132, the rotary cylinder 180 and the linear air bar is achieved.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

The present utility model has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed.

Claims

1. A secondary shedding device, characterized in that the secondary shedding device comprises:

a support frame;

2. The secondary shedding device according to claim 1, wherein the deflector rod rotates between a first position and a second position around the rotation central axis, the rotation central axis being located outside the upper suction cup assembly in the length direction, and a projection of a rotation locus of the deflector rod on the bearing surface is partially located in a positioning area where the bearing surface positions the woven bag;

3. The secondary shedding device according to claim 2, wherein an end of the bearing surface in the longitudinal direction is provided with a hollow portion through which an air flow passes, the hollow portion being located in a middle of the bearing surface in a width direction, the lower suction cup assembly being sealingly connected to the bearing surface around the hollow portion, the width direction being perpendicular to the longitudinal direction and the height direction.

4. The secondary shedding apparatus of claim 3, wherein the upper suction cup assembly comprises a first upper suction cup and a second upper suction cup, projections of the first upper suction cup and the second upper suction cup on the bearing surface being located at two ends of the positioning area along the length direction, respectively;

5. The secondary shedding device of claim 4, wherein the void comprises a first void configured as a suction aperture of a first lower suction cup and a second void configured as a receiving aperture for at least partially receiving the second lower suction cup, an upper surface of the first lower suction cup and an upper surface of the second lower suction cup both being flush with the bearing surface.

6. The secondary shedding device according to claim 4, wherein the shift lever is provided with two groups, and the two groups of shift levers correspond to the first upper suction cup and the second upper suction cup, respectively.

7. The secondary shedding apparatus of claim 6, wherein the first upper suction cup and an adjacent set of the levers are movably connected to the support frame along the length direction;

The secondary shedding device further comprises:

8. The secondary shedding apparatus of claim 7, further comprising:

the adjustment assembly includes:

the nut seat is connected to the movable cross beam;

9. The secondary shedding apparatus of claim 8, wherein the locking assembly comprises:

10. The secondary shedding apparatus of claim 3, wherein the upper suction cup assembly comprises:

11. The secondary shedding device according to claim 6, wherein the same group of the levers includes two levers, which are respectively connected to the two second driving assemblies in one-to-one correspondence, and which correspond to both ends of the bearing surface in the width direction.

12. The secondary shedding apparatus according to claim 11, wherein the second driving assembly is configured as a rotary cylinder, an output shaft of which is connected to the lever, an axis of the output shaft of which is configured as the rotation central axis; and/or

13. The secondary shedding device according to claim 12, wherein when the levers are in the first position, two levers of the same group are close to each other and a length direction of the levers is parallel to the width direction.

14. The secondary shedding device according to claim 13, wherein two levers of the same group are staggered in the height direction.

15. The secondary shedding apparatus of claim 12, further comprising:

16. The secondary shedding device of claim 1, wherein the lever comprises:

a lever body having one end corresponding to the rotation center axis;

17. The secondary shedding apparatus according to claim 11, wherein at least one of the two second driving assemblies is movably provided to the support frame in the width direction;

the secondary shedding device further comprises:

a third lock bolt connected to the second drive assembly, the third lock bolt detachably connected to the support bracket to allow fastening of the second drive assembly to the support bracket.