Negative pressure feeding sandbag filling device and method

Abstract

The present application discloses a negative pressure feeding sandbag filling device and method. The negative pressure feeding sandbag filling device comprises a hollow frame, a press sleeve is fixedly connected in the frame, the side wall of the press sleeve is provided with a first suction hole group and a second suction hole group relative to each other, the first suction hole group includes a plurality of first suction holes, the second suction hole group includes a plurality of second suction holes, a push plate is slidably connected in the press sleeve, a push cylinder is provided on the top of the press sleeve, and the push cylinder drives the push plate to move. The air in the press sleeve is sucked out through the first vacuum suction port and the second vacuum suction port, so that a negative pressure chamber is formed in the press sleeve. After the push plate moves to connect the feed suction port with the negative pressure chamber, the negative pressure chamber sucks the rags in the hopper into the negative pressure chamber through the feed suction pipe, and the volume of the rags will be compressed. Under the premise of filling the same weight of rags, the volume of the press sleeve can be reduced, and the volume of the entire device is also reduced.

Description

Technical Field

[0001] The present invention generally relates to the field of sandbag filling, and more particularly to a negative pressure feeding sandbag filling device and method. Background Art

[0002] Some sandbags use rags as filling materials. When using a sandbag filling device to fill the sandbags with rags, due to the large volume of the rags, the volume of the filling sleeve of the sandbag filling device is relatively large, making the volume of the entire device also relatively large. Summary of the invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a negative pressure feeding sandbag filling device and method that reduces the volume of the equipment.

[0004] In the first aspect, the negative pressure feeding sandbag filling device of the present invention comprises a hollow frame, a press sleeve is fixedly connected in the frame, a first suction hole group and a second suction hole group are arranged on the side wall of the press sleeve, the first suction hole group comprises a plurality of first suction holes, the second suction hole group comprises a plurality of second suction holes, a push plate is slidably connected in the press sleeve, a push cylinder is arranged on the top of the press sleeve, and the push cylinder drives the push plate to move.

[0005] The cam is an angular channel formed between a first and a second camshaft, the second cam being abutted against the cam face, the second cam being provided with a pin to contact the cam face, the second cam being provided with a pin to contact the cam face, the cam being provided with a pin to contact the cam face, the cam being provided with a pin to contact the cam face,

[0006] The inner side walls of the frame are respectively provided with a first cylinder and a second cylinder, the first cylinder drives the first movable shell to approach or move away from the pressing sleeve, the second cylinder drives the second movable shell to approach or move away from the pressing sleeve, the first movable shell is provided with a first vacuum suction port, the first vacuum suction port is connected to a first vacuum suction pipe, the second movable shell is provided with a second vacuum suction port, the second vacuum suction port is connected to a second vacuum suction pipe, the side wall of the pressing sleeve is provided with a feed suction port, the feed suction port is connected to the charging hopper through the feed suction pipe,

[0007] A first sealing ring is disposed on a side of the first movable housing facing the pressing sleeve, the first vacuum suction port is located inside the first sealing ring, and the first support plate is located outside the first sealing ring; a second sealing ring is disposed on a side of the second movable housing facing the pressing sleeve, the second vacuum suction port is located inside the second sealing ring, and the second support plate is located outside the second sealing ring.

[0008] A sandbag outer shell platform is arranged in the frame, and the sandbag outer shell platform is located below the material pressing sleeve.

[0009] In a second aspect, the negative pressure feeding sandbag filling method of the present invention uses a negative pressure feeding sandbag filling device to fill the sandbag, comprising the following steps:

[0010] The first cylinder drives the first movable housing to be close to the pressing sleeve, the second cylinder drives the second movable housing to be close to the pressing sleeve, and the first bottom sealing plate and the second bottom sealing plate seal the opening together;

[0011] The first vacuum suction pipe and the second vacuum suction pipe simultaneously suck out the air in the pressing sleeve, so that a negative pressure chamber is formed in the pressing sleeve;

[0012] The push cylinder drives the push plate to move toward the top of the press sleeve, so that the feed suction port is connected with the negative pressure chamber, and the scraps in the hopper enter the press sleeve from the feed suction pipe under the suction force of the feed suction pipe;

[0013] After the scraps of cloth sucked by the pressing sleeve reach the loading amount, the first vacuum suction pipe and the second vacuum suction pipe stop suctioning, the first cylinder drives the first movable shell away from the pressing sleeve, and the second cylinder drives the second movable shell away from the pressing sleeve;

[0014] The sandbag outer shell platform is covered with sandbags to be filled. The sandbag outer shell platform moves up to dock with the opening, and the pushing cylinder drives the pushing plate to move to the bottom of the pressing sleeve to push the scraps of cloth in the pressing sleeve into the sandbag to complete the filling of the sandbag.

[0015] According to the technical solution provided in the embodiment of the present application, the air in the pressing sleeve is sucked out through the first vacuum suction port and the second vacuum suction port, so that a negative pressure chamber is formed in the pressing sleeve. After the push plate moves to connect the feed suction port with the negative pressure chamber, the negative pressure chamber sucks the cloth scraps in the charging hopper into the negative pressure chamber through the feed suction pipe, and the volume of the cloth scraps will be compressed. On the premise of filling the same weight of cloth scraps, the volume of the pressing sleeve can be reduced, and the volume of the entire device is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a structural schematic diagram of a negative pressure feeding sandbag filling device according to an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a negative pressure feeding sandbag filling device according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0020] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0021] Figure 5 It is a structural schematic diagram of a negative pressure feeding sandbag filling device according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0023] Figures 7 to 13 Schematic diagram of a sandbag filling process of a negative pressure feeding sandbag filling device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] One embodiment of the present invention is, please refer to Figures 1 to 6The negative pressure feeding sandbag filling device of the present invention comprises a hollow frame 400, a press sleeve 100 is fixedly connected in the frame 400, a first suction hole group and a second suction hole group are arranged opposite to each other on the side wall of the press sleeve 100, the first suction hole group comprises a plurality of first suction holes 230, the second suction hole group comprises a plurality of second suction holes 330, a push plate 420 is slidably connected in the press sleeve 100, a push cylinder 410 is arranged on the top of the press sleeve 100, the push cylinder 410 drives the push plate 420 to move, a first movable shell 200 and a second movable shell 300 are arranged on both sides of the press sleeve 100, the first movable shell 200 and the second movable shell 300 are respectively close to the press sleeve 100 to seal the press sleeve 100, an opening 110 is arranged at the bottom of the press sleeve 100, a first support plate 210 is fixedly connected to the side of the bottom of the first movable shell 200 facing the second movable shell 300, and the second movable shell 300 is fixedly connected to the first support plate 210, and the second movable shell 300 is fixedly connected to the first support plate 210. A second support plate 310 is fixedly connected to the side of the bottom facing the first movable shell 200, a first bottom sealing plate 220 is arranged on the side of the first support plate 210 facing the pressing sleeve 100, the first bottom sealing plate 220 is connected to the first support plate 210 through a plurality of first rotating connecting rods 221, the plurality of first rotating connecting rods 221 are parallel to each other, a first spring 222 is further arranged between the first bottom sealing plate 220 and the first support plate 210, a second bottom sealing plate 320 is arranged on the side of the second support plate 310 facing the pressing sleeve 100, the second bottom sealing plate 320 is connected to the second support plate 310 through a plurality of second rotating connecting rods 321, the plurality of second rotating connecting rods 321 are parallel to each other, a second spring 322 is further arranged between the second bottom sealing plate 320 and the second support plate 310,

[0027] The inner wall of the frame 400 is respectively provided with a first cylinder 430 and a second cylinder 440, the first cylinder 430 drives the first movable shell 200 to approach or move away from the pressing sleeve 100, the second cylinder 440 drives the second movable shell 300 to approach or move away from the pressing sleeve 100, the first movable shell 200 is provided with a first vacuum suction port 231, the first vacuum suction port 231 is connected to the first vacuum suction pipe 232, the second movable shell 300 is provided with a second vacuum suction port 331, the second vacuum suction port 331 is connected to the second vacuum suction pipe 332, the side wall of the pressing sleeve 100 is provided with a feed suction port 120, the feed suction port 120 is connected to the charging hopper 500 through the feed suction pipe 121, the first movable shell 200 is provided with a first sealing ring on the side facing the pressing sleeve 100, the first vacuum suction port 231 The first support plate 210 is located outside the first sealing ring, a second sealing ring is arranged on the side of the second movable shell 300 facing the pressing sleeve 100, the second vacuum suction port 331 is located inside the second sealing ring, the second support plate 310 is located outside the second sealing ring, a sandbag jacket platform 600 is arranged inside the frame 400, and the sandbag jacket platform 600 is located below the pressing sleeve 100.

[0028] In an embodiment of the present invention, the frame is configured as a hollow structure, the press sleeve is located inside the frame, and the frame can protect the press sleeve. The side plate of the press sleeve is provided with a first suction hole group, the first suction hole group includes a plurality of first suction holes, and the first suction holes are arranged in a matrix. When the first movable shell is in close contact with the press sleeve, the cavity between the first movable shell and the press sleeve is connected to the cavity inside the press sleeve through the first suction hole, and the first vacuum suction pipe is used to evacuate the cavity between the first movable shell and the press sleeve through the first vacuum suction port, and the air in the press sleeve is sucked out through the first suction hole. Similarly, the side plate of the pressing sleeve is provided with a second suction hole group, which includes a plurality of second suction holes arranged in a matrix. When the second movable shell is close to the pressing sleeve, the cavity between the second movable shell and the pressing sleeve is connected with the cavity inside the pressing sleeve through the second suction holes. The second vacuum suction pipe evacuates the cavity between the second movable shell and the pressing sleeve through the second vacuum suction port, and the air in the pressing sleeve is sucked out through the second suction holes.

[0029] The first mobile shell and the second mobile shell can be synchronously approached or synchronously moved away from each other. The first mobile shell is driven by the first cylinder, and the second mobile shell is driven by the second cylinder, so as to ensure that the first mobile shell and the second mobile shell move synchronously. The first mobile shell and the second mobile shell are approached to each other until the first mobile shell and the second mobile shell are respectively close to the pressing sleeve, and the pressing sleeve can be sealed. A first vacuum suction port can be provided on the first mobile shell, and a second vacuum suction port can be provided on the second mobile shell. Through the first vacuum suction port, the second vacuum suction port and the first suction hole and the second suction hole on the pressing sleeve, the air pressure in the pressing sleeve becomes smaller, so that the scraps of cloth are sucked in through the suction pipe. After the pressing sleeve finishes sucking in the scraps of cloth, the first mobile shell and the second mobile shell are synchronously separated, so that the scraps of cloth sucked in by the pressing sleeve are pressed into the sandbag.

[0030] When the first movable shell and the second movable shell approach each other, the first bottom sealing plate and the second bottom sealing plate contact each other and push each other, so that the connecting rod mechanism composed of the first bottom sealing plate and the first rotating connecting rod and the connecting rod mechanism composed of the second bottom sealing plate and the second rotating connecting rod move, and the first bottom sealing plate and the second bottom sealing plate respectively approach and cling to the opening at the bottom of the sealing pressing sleeve, so that the bottom of the charging sleeve is sealed. After the charging sleeve is sucked into enough scraps of cloth, when the scraps of cloth in the charging sleeve need to be filled into the sandbag, the first movable shell and the second movable shell move away from each other, the first bottom sealing plate moves away from the pressing sleeve under the elastic force of the first spring, and the second bottom sealing plate moves away from the pressing sleeve under the elastic force of the second spring, and the bottom of the charging sleeve opens, so that the charging sleeve can suck in and discharge the scraps of cloth.

[0031] A push plate is slidably connected inside the press sleeve, and the push plate and the press sleeve are sealed and slidably connected, and the push plate is driven by a push cylinder. A feed suction port is arranged on the side wall of the press sleeve, and when the first movable shell and the second movable shell are respectively close to the press sleeve, the first bottom sealing plate and the second bottom sealing plate seal the opening together, and the first vacuum suction pipe and the second vacuum suction pipe respectively extract the air in the press sleeve. At this time, the push plate is located below the feed suction port, and the feed suction port is not connected with the negative pressure chamber, and the negative pressure chamber is a closed space. When feeding is required, the push cylinder drives the push plate to move toward the top of the press sleeve until the feed suction port is connected with the negative pressure chamber, that is, the feed suction port is located below the push plate, and the negative pressure chamber sucks the scraps of cloth from the hopper into the negative pressure chamber through the feed suction pipe, and the volume of the scraps of cloth will be compressed. Under the premise of filling the same weight of scraps of cloth, the volume of the press sleeve can be reduced, and the volume of the entire device is also reduced. The unfilled sandbag is fixed on the sandbag outer shell platform. After the feeding is completed, the first movable shell and the second movable shell are away from the pressing sleeve, the negative pressure in the pressing sleeve is released, the first bottom sealing plate and the second bottom sealing plate open the openings, and the scraps of cloth sucked into the pressing sleeve are compressed into blocks. The sandbag outer shell platform drives the sandbag to move toward the opening, and the pushing cylinder drives the pushing plate to move toward the bottom of the pressing sleeve to push the scraps of cloth compressed into blocks by the pressing sleeve into the sandbag, thereby filling the sandbag.

[0032] A first sealing ring is provided on the side of the first movable housing facing the pressing sleeve. When the first movable housing is pressed against the pressing sleeve, the first sealing ring can ensure the sealing of the contact portion between the first movable housing and the pressing sleeve. When the first vacuum pipette is evacuating air, air leakage between the first movable housing and the pressing sleeve is avoided, thereby ensuring air tightness. A second sealing ring is provided on the side of the second movable housing facing the pressing sleeve. When the second movable housing is pressed against the pressing sleeve, the second sealing ring can ensure the sealing of the contact portion between the second movable housing and the pressing sleeve. When the second vacuum pipette is evacuating air, air leakage between the second movable housing and the pressing sleeve is avoided, thereby ensuring air tightness.

[0033] Furthermore, a first adjustment plate 240 is slidably connected to the side of the first movable shell 200 facing the pressing sleeve 100, and the first adjustment plate 240 slides relative to the first movable shell 200 to cover different numbers of first suction holes 230; a second adjustment plate 340 is slidably connected to the side of the second movable shell 300 facing the pressing sleeve 100, and the second adjustment plate 340 slides relative to the second movable shell 300 to cover different numbers of second suction holes 330.

[0034] In an embodiment of the present invention, the first movable shell is slidably connected to the first adjustment plate. By sliding the first adjustment plate, the first adjustment plate can be changed to block different numbers of first suction holes. When a large number of scraps of cloth need to be sucked into the pressing sleeve, the first adjustment plate can be slid to make the first adjustment plate block a smaller number of first suction holes, thereby increasing the suction amount of the scraps of cloth; when a small number of scraps of cloth need to be sucked into the pressing sleeve, the first adjustment plate can be slid to make the first adjustment plate block a larger number of first suction holes, thereby reducing the suction amount of the scraps of cloth.

[0035] The second movable shell is slidably connected to the second adjusting plate. By sliding the second adjusting plate, the second adjusting plate can be changed to cover different numbers of the second suction holes. When a large number of cloth scraps need to be sucked into the pressing sleeve, the second adjusting plate can be slid to make the second adjusting plate cover a smaller number of second suction holes, thereby increasing the suction amount of the cloth scraps. When a small number of cloth scraps need to be sucked into the pressing sleeve, the second adjusting plate can be slid to make the second adjusting plate cover a larger number of second suction holes, thereby reducing the suction amount of the cloth scraps.

[0036] Furthermore, a first air outlet 233 is disposed on the side wall of the first movable housing 200 , and a second air outlet 333 is disposed on the side wall of the second movable housing 300 .

[0037] In an embodiment of the present invention, when it is necessary to push out the scraps of cloth sucked into the pressing sleeve, the negative pressure chamber is deflated through the first air vent and the second air vent, and external air enters the pressing sleeve through the first air vent and the second air vent, thereby reducing the pressure difference between the inside and outside of the pressing sleeve and reducing the resistance encountered by the first movable shell and the second movable shell when they are away from the pressing sleeve.

[0038] Furthermore, the frame 400 is provided with a plurality of first cylinders 430 , which synchronously drive the first movable housing 200 to move, and the frame 400 is provided with a plurality of second cylinders 440 , which synchronously drive the second movable housing 300 to move.

[0039] In the embodiment of the present invention, the first movable housing is driven by a plurality of first cylinders to ensure the stability of the first movable housing, and the second movable housing is driven by a plurality of second cylinders to ensure the stability of the second movable housing.

[0040] Furthermore, the first support plate 210 is fixedly connected to the first connecting block 211, the first bottom sealing plate 220 is fixedly connected to the second connecting block 223, the first connecting block 211 and the second connecting block 223 are respectively rotatably connected to the two ends of the first rotating link 221, the second support plate 310 is fixedly connected to the third connecting block 311, the second bottom sealing plate 320 is fixedly connected to the fourth connecting block 323, the third connecting block 311 and the fourth connecting block 323 are respectively rotatably connected to the two ends of the second rotating link 321.

[0041] In an embodiment of the present invention, the first support plate is fixedly connected with a first connecting block, the first connecting block is rotatably connected to the first rotating connecting rod, and the first rotating connecting rod is rotatably connected to the first support plate through the first connecting block, thereby reducing the connection difficulty.

[0042] The first bottom sealing plate is fixedly connected with the second connecting block, the second connecting block is rotatably connected with the first rotating connecting rod, and the first rotating connecting rod is rotatably connected with the first bottom sealing plate through the second connecting block, thereby reducing the connection difficulty.

[0043] The second support plate is fixedly connected with a third connection block, the third connection block is rotatably connected to the second rotating connecting rod, and the second rotating connecting rod is rotatably connected to the second support plate through the third connection block, thereby reducing the connection difficulty.

[0044] The second bottom sealing plate is fixedly connected with a fourth connecting block, the fourth connecting block is rotatably connected to the second rotating connecting rod, and the second rotating connecting rod is rotatably connected to the second bottom sealing plate through the fourth connecting block, thereby reducing the connection difficulty.

[0045] Furthermore, the first rotating link 221 is fixedly connected to a first limiting rod 224 , and the first limiting rod 224 faces the second rotating link 321 .

[0046] In an embodiment of the present invention, the first rotating link is fixedly connected to the first limiting rod, and the first limiting rod moves with the first rotating link. When the first movable housing and the second movable housing are separated from each other, the first bottom sealing plate is subjected to its own gravity and approaches the first support plate, driving the first rotating link to rotate, and the first limiting rod rotates with the first rotating link. At this time, the side of the first limiting rod away from the first rotating link gradually approaches the first support plate until the first limiting rod abuts against the first support plate, and the first bottom sealing plate can no longer approach the first support plate. By setting the first limiting rod, the first support plate and the first bottom sealing plate are kept at a certain distance. When the first movable housing and the second movable housing are synchronously approached next time, the first bottom sealing plate can be smoothly pushed when the first bottom sealing plate and the second bottom sealing plate are in contact.

[0047] Furthermore, the second rotating link 321 is fixedly connected to a second limiting rod 324 , and the second limiting rod 324 faces the first rotating link 221 .

[0048] In an embodiment of the present invention, the second rotating link is fixedly connected to a second limiting rod, and the second limiting rod moves with the second rotating link. When the second movable housing and the second movable housing are separated from each other, the second bottom sealing plate is subjected to its own gravity and approaches the second support plate, driving the second rotating link to rotate, and the second limiting rod rotates with the second rotating link. At this time, the side of the second limiting rod away from the second rotating link gradually approaches the second support plate until the second limiting rod abuts against the second support plate, and the second bottom sealing plate can no longer approach the second support plate. By setting the second limiting rod, the second support plate and the second bottom sealing plate are kept at a certain distance. When the second movable housing and the second movable housing are synchronously approached next time, the second bottom sealing plate can be smoothly pushed when the second bottom sealing plate contacts the second bottom sealing plate.

[0049] Furthermore, a first sealing layer 225 is provided on a side of the first bottom sealing plate 220 facing the pressing sleeve 100 .

[0050] In an embodiment of the present invention, a first sealing layer is provided on the side of the first bottom sealing plate facing the pressing sleeve, and when the first bottom sealing plate is close to and in close contact with the pressing sleeve, the first sealing layer is in contact with the pressing sleeve, and the first sealing layer can ensure the sealing performance of the opening of the pressing sleeve. The first sealing layer can be, but is not limited to, a rubber layer.

[0051] Furthermore, a second sealing layer 325 is provided on the side of the second bottom sealing plate 320 facing the pressing sleeve 100 .

[0052] In an embodiment of the present invention, a second sealing layer is provided on the side of the second bottom sealing plate facing the pressing sleeve. When the second bottom sealing plate is close to and in close contact with the pressing sleeve, the second sealing layer is in contact with the pressing sleeve, and the second sealing layer can ensure the sealing performance of the opening of the pressing sleeve. The second sealing layer can be, but is not limited to, a rubber layer.

[0053] Furthermore, the first bottom sealing plate 220 and the second bottom sealing plate 320 are both configured to be semicircular.

[0054] In an embodiment of the present invention, the first bottom sealing plate and the second bottom sealing plate are both configured in a semicircular shape, so that the first bottom sealing plate and the second bottom sealing plate can better fit the shape of the opening.

[0055] Another embodiment of the present invention is, referring to Figures 1 to 13 A negative pressure feeding sandbag filling method, using a negative pressure feeding sandbag filling device to fill the sandbag, comprises the following steps:

[0056] refer to Figures 7 to 11 The first cylinder 430 drives the first movable housing 200 to be close to the pressing sleeve 100, and the second cylinder 440 drives the second movable housing 300 to be close to the pressing sleeve 100, and the first bottom sealing plate 220 and the second bottom sealing plate 320 seal the opening 110 together;

[0057] The first vacuum suction pipe 232 and the second vacuum suction pipe 332 simultaneously suck out the air in the pressing sleeve 100, so that a negative pressure chamber is formed in the pressing sleeve 100;

[0058] The push cylinder 410 drives the push plate 420 to move toward the top of the pressing sleeve 100, so that the feed suction port 120 is connected with the negative pressure chamber, and the scraps of cloth in the charging hopper 500 enter the pressing sleeve 100 from the feed suction pipe 121 under the suction force of the feed suction pipe 121;

[0059] refer to Fig.12 and 13 After the scraps of cloth sucked by the pressing sleeve 100 reach the loading amount, the first vacuum pipe 232 and the second vacuum pipe 332 stop sucking air, the first cylinder 430 drives the first movable housing 200 away from the pressing sleeve 100, and the second cylinder 440 drives the second movable housing 300 away from the pressing sleeve 100;

[0060] The sandbag jacket platform 600 is equipped with sandbags to be filled. The sandbag jacket platform 600 moves up to dock with the opening 110, and the pushing cylinder 410 drives the pushing plate 420 to move toward the bottom of the pressing sleeve 100 to push the scraps of cloth in the pressing sleeve 100 into the sandbags, thereby completing the filling of the sandbags.

[0061] In an embodiment of the present invention, the frame is configured as a hollow structure, the press sleeve is located inside the frame, and the frame can protect the press sleeve. The side plate of the press sleeve is provided with a first suction hole group, the first suction hole group includes a plurality of first suction holes, and the first suction holes are arranged in a matrix. When the first movable shell is in close contact with the press sleeve, the cavity between the first movable shell and the press sleeve is connected to the cavity inside the press sleeve through the first suction hole, and the first vacuum suction pipe is used to evacuate the cavity between the first movable shell and the press sleeve through the first vacuum suction port, and the air in the press sleeve is sucked out through the first suction hole. Similarly, the side plate of the pressing sleeve is provided with a second suction hole group, which includes a plurality of second suction holes arranged in a matrix. When the second movable shell is close to the pressing sleeve, the cavity between the second movable shell and the pressing sleeve is connected with the cavity inside the pressing sleeve through the second suction holes. The second vacuum suction pipe evacuates the cavity between the second movable shell and the pressing sleeve through the second vacuum suction port, and the air in the pressing sleeve is sucked out through the second suction holes.

[0062] The first mobile shell and the second mobile shell can be synchronously approached or synchronously moved away from each other. The first mobile shell is driven by the first cylinder, and the second mobile shell is driven by the second cylinder, so as to ensure that the first mobile shell and the second mobile shell move synchronously. The first mobile shell and the second mobile shell are approached to each other until the first mobile shell and the second mobile shell are respectively close to the pressing sleeve, and the pressing sleeve can be sealed. A first vacuum suction port can be provided on the first mobile shell, and a second vacuum suction port can be provided on the second mobile shell. Through the first vacuum suction port, the second vacuum suction port and the first suction hole and the second suction hole on the pressing sleeve, the air pressure in the pressing sleeve becomes smaller, so that the scraps of cloth are sucked in through the suction pipe. After the pressing sleeve finishes sucking in the scraps of cloth, the first mobile shell and the second mobile shell are synchronously separated, so that the scraps of cloth sucked in by the pressing sleeve are pressed into the sandbag.

[0063] When the first movable shell and the second movable shell approach each other, the first bottom sealing plate and the second bottom sealing plate contact each other and push each other, so that the connecting rod mechanism composed of the first bottom sealing plate and the first rotating connecting rod and the connecting rod mechanism composed of the second bottom sealing plate and the second rotating connecting rod move, and the first bottom sealing plate and the second bottom sealing plate respectively approach and cling to the opening at the bottom of the sealing pressing sleeve, so that the bottom of the charging sleeve is sealed. After the charging sleeve is sucked into enough scraps of cloth, when the scraps of cloth in the charging sleeve need to be filled into the sandbag, the first movable shell and the second movable shell move away from each other, the first bottom sealing plate moves away from the pressing sleeve under the elastic force of the first spring, and the second bottom sealing plate moves away from the pressing sleeve under the elastic force of the second spring, and the bottom of the charging sleeve opens, so that the charging sleeve can suck in and discharge the scraps of cloth.

[0064] A push plate is slidably connected inside the press sleeve, and the push plate and the press sleeve are sealed and slidably connected, and the push plate is driven by a push cylinder. A feed suction port is arranged on the side wall of the press sleeve, and when the first movable shell and the second movable shell are respectively close to the press sleeve, the first bottom sealing plate and the second bottom sealing plate seal the opening together, and the first vacuum suction pipe and the second vacuum suction pipe respectively extract the air in the press sleeve. At this time, the push plate is located below the feed suction port, and the feed suction port is not connected with the negative pressure chamber, and the negative pressure chamber is a closed space. When feeding is required, the push cylinder drives the push plate to move toward the top of the press sleeve until the feed suction port is connected with the negative pressure chamber, that is, the feed suction port is located below the push plate, and the negative pressure chamber sucks the scraps of cloth from the hopper into the negative pressure chamber through the feed suction pipe, and the volume of the scraps of cloth will be compressed. Under the premise of filling the same weight of scraps of cloth, the volume of the press sleeve can be reduced, and the volume of the entire device is also reduced. The unfilled sandbag is fixed on the sandbag outer shell platform. After the feeding is completed, the first movable shell and the second movable shell are away from the pressing sleeve, the negative pressure in the pressing sleeve is released, the first bottom sealing plate and the second bottom sealing plate open the openings, and the scraps of cloth sucked into the pressing sleeve are compressed into blocks. The sandbag outer shell platform drives the sandbag to move toward the opening, and the pushing cylinder drives the pushing plate to move toward the bottom of the pressing sleeve to push the scraps of cloth compressed into blocks by the pressing sleeve into the sandbag, thereby filling the sandbag.

[0065] A first sealing ring is provided on the side of the first movable housing facing the pressing sleeve. When the first movable housing is pressed against the pressing sleeve, the first sealing ring can ensure the sealing of the contact portion between the first movable housing and the pressing sleeve. When the first vacuum pipette is evacuating air, air leakage between the first movable housing and the pressing sleeve is avoided, thereby ensuring air tightness. A second sealing ring is provided on the side of the second movable housing facing the pressing sleeve. When the second movable housing is pressed against the pressing sleeve, the second sealing ring can ensure the sealing of the contact portion between the second movable housing and the pressing sleeve. When the second vacuum pipette is evacuating air, air leakage between the second movable housing and the pressing sleeve is avoided, thereby ensuring air tightness.

[0066] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A negative pressure feeding sandbag filling device, It is characterized in that The machine comprises a hollow frame, a press sleeve is fixedly connected in the frame, a first suction hole group and a second suction hole group are arranged opposite to each other on the side wall of the press sleeve, the first suction hole group comprises a plurality of first suction holes, the second suction hole group comprises a plurality of second suction holes, a push plate is slidably connected in the press sleeve, a push cylinder is arranged on the top of the press sleeve, and the push cylinder drives the push plate to move. The cam is an angular channel formed between a first and a second camshaft, the second cam being abutted against the cam face, the second cam being provided with a pin to contact the cam face, the second cam being provided with a pin to contact the cam face, the cam being provided with a pin to contact the cam face, the cam being provided with a pin to contact the cam face, The inner side walls of the frame are respectively provided with a first cylinder and a second cylinder, the first cylinder drives the first movable shell to approach or move away from the pressing sleeve, the second cylinder drives the second movable shell to approach or move away from the pressing sleeve, the first movable shell is provided with a first vacuum suction port, the first vacuum suction port is connected to a first vacuum suction pipe, the second movable shell is provided with a second vacuum suction port, the second vacuum suction port is connected to a second vacuum suction pipe, the side wall of the pressing sleeve is provided with a feed suction port, the feed suction port is connected to the charging hopper through the feed suction pipe, A first sealing ring is disposed on a side of the first movable housing facing the pressing sleeve, the first vacuum suction port is located inside the first sealing ring, and the first support plate is located outside the first sealing ring; a second sealing ring is disposed on a side of the second movable housing facing the pressing sleeve, the second vacuum suction port is located inside the second sealing ring, and the second support plate is located outside the second sealing ring. A sandbag outer shell platform is arranged in the frame, and the sandbag outer shell platform is located below the material pressing sleeve.

2. The negative pressure feeding sandbag filling device according to claim 1, It is characterized in that A first adjusting plate is slidably connected to a side of the first movable housing facing the pressing sleeve. The first adjustment plate slides relative to the first movable housing to cover different numbers of the first suction holes; A second adjusting plate is slidably connected to a side of the second movable housing facing the pressing sleeve. The second adjustment plate slides relative to the second movable housing to cover different numbers of the second suction holes.

3. The negative pressure feeding sandbag filling device according to claim 1, It is characterized in that The side wall of the first movable shell is provided with a first air release port, and the side wall of the second movable shell is provided with a second air release port.

4. The negative pressure feeding sandbag filling device according to claim 1, It is characterized in that The frame is provided with a plurality of the first cylinders, and the plurality of the first cylinders synchronously drive the first movable housing to move. The frame is provided with a plurality of the second cylinders, and the plurality of the second cylinders synchronously drive the second movable housing to move.

5. The negative pressure feeding sandbag filling device according to claim 1, It is characterized in that The first supporting plate is fixedly connected with a first connecting block, the first bottom sealing plate is fixedly connected with a second connecting block, the first connecting block and the second connecting block are respectively rotatably connected with two ends of the first rotating connecting rod, the second supporting plate is fixedly connected with a third connecting block, the second bottom sealing plate is fixedly connected with a fourth connecting block, the third connecting block and the fourth connecting block are respectively rotatably connected with two ends of the second rotating connecting rod.

6. The negative pressure feeding sandbag filling device according to claim 5, It is characterized in that The first rotating link is fixedly connected to a first limiting rod, and the first limiting rod faces the second rotating link. The second rotating link is fixedly connected to a second limiting rod, and the second limiting rod faces the first rotating link.

7. The negative pressure feeding sandbag filling device according to claim 1, It is characterized in that A first sealing layer is provided on a side of the first bottom sealing plate facing the pressing sleeve. A second sealing layer is provided on a side of the second bottom sealing plate facing the pressing sleeve.

8. The negative pressure feeding sandbag filling device according to claim 1, It is characterized in that The first bottom sealing plate and the second bottom sealing plate are both configured in a semicircular shape.

9. A negative pressure feeding sandbag filling method, It is characterized in that The negative pressure feeding sandbag filling device according to any one of claims 1 to 8 is used to fill sandbags, comprising the following steps: The first cylinder drives the first movable housing to be close to the pressing sleeve, the second cylinder drives the second movable housing to be close to the pressing sleeve, and the first bottom sealing plate and the second bottom sealing plate seal the opening together; The first vacuum suction pipe and the second vacuum suction pipe simultaneously suck out the air in the pressing sleeve, so that a negative pressure chamber is formed in the pressing sleeve; The push cylinder drives the push plate to move toward the top of the press sleeve, so that the feed suction port is connected with the negative pressure chamber, and the scraps in the hopper enter the press sleeve from the feed suction pipe under the suction force of the feed suction pipe; After the scraps of cloth sucked by the pressing sleeve reach the loading amount, the first vacuum suction pipe and the second vacuum suction pipe stop suctioning, the first cylinder drives the first movable shell away from the pressing sleeve, and the second cylinder drives the second movable shell away from the pressing sleeve; The sandbag outer shell platform is covered with sandbags to be filled. The sandbag outer shell platform moves up to dock with the opening, and the pushing cylinder drives the pushing plate to move to the bottom of the pressing sleeve to push the scraps of cloth in the pressing sleeve into the sandbag to complete the filling of the sandbag.

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