A gravity soft bag opening machine

Abstract

The present invention discloses a gravity-type soft bag opening machine, which comprises an inclined chute, a blade fixedly arranged on the side wall of the chute for cutting the side of the soft bag, and a cutter arranged at the discharge port at the lower end of the chute for cutting the end face of the soft bag close to the discharge port; the cutter is vertically arranged between the two side walls of the chute, the cutter is parallel to the bottom surface of the chute, the blade of the cutter faces the direction of the soft bag, and the blade and the cutter are at equal distances from the bottom of the chute. By using the present invention, the labor intensity of the operator is reduced, the spillage and dust in the process of material delivery are reduced, the waste is reduced, the health of the operator is not affected, and the operator's hand is not cut.

Description

Technical Field

[0001] The invention relates to the technical field of feeding equipment, and in particular to a gravity-type soft bag opening machine. Background Art

[0002] Soft bags are usually used to package powdery or granular materials. There are many types of soft bags, such as woven belts, kraft paper bags, plastic bags, etc. During production, the soft bags need to be broken open first, and then the materials inside are placed into the production equipment. The usual operation method is to transport the soft bags containing materials to the vicinity of the inlet of the production equipment manually or by means of forklifts, flatbed trucks, etc., and then the operator manually cuts the soft bags with a blade, and finally pours the materials into the inlet. The labor intensity of the operator is high, and in the process of placing materials after the soft bags are cut, spillage and dust are inevitable, which not only causes waste, but also affects the health of the operator, and it is easy to cut the hand if the operation is not done properly. Summary of the invention

[0003] The purpose of the present invention is to propose a gravity-type soft bag opening machine in view of the defects of the soft bag in the opening process in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A gravity-type soft bag opening machine comprises an inclined chute, a blade fixedly arranged on the side wall of the chute for cutting the side surface of the soft bag, and a cutter arranged at the discharge port at the lower end of the chute for cutting the end of the soft bag close to the discharge port; the cutter is arranged between the two side walls of the chute, the cutter is perpendicular to the two side walls of the chute, the cutter is parallel to the bottom surface of the chute, the blade of the cutter faces the direction of the soft bag, and the distance between the blade and the bottom of the chute and the distance between the cutter and the bottom of the chute are equal.

[0006] Furthermore, the cutter is fixedly connected to the slide groove.

[0007] Furthermore, a baffle is provided at the discharge port of the chute, the top of the baffle is rotatably connected to the chute, the cutter is located in the chute and fixedly connected to the baffle, and a cylinder for swinging the baffle is provided between the baffle and the chute.

[0008] Furthermore, a cover plate is fixedly connected to the top of the chute, a baffle is provided at the discharge port of the chute, the top of the baffle is rotatably connected to the chute or the cover plate, the cutter is located in the chute and fixedly connected to the baffle, and a cylinder for swinging the baffle is provided between the baffle and the chute.

[0009] Furthermore, the blade of the cutter is serrated.

[0010] Furthermore, it also includes a frame, the lower part of the slide slot is rotatably connected to the frame, and the upper part is supported on the frame.

[0011] Furthermore, a cover plate is fixedly connected to the top of the slide groove.

[0012] Furthermore, a through hole is provided at the bottom of the slide groove near the location of the blade, and a negative pressure box with negative pressure inside is provided at the bottom of the slide groove at the location of the through hole, and the negative pressure box is connected to the air extraction device.

[0013] Furthermore, a negative pressure bag taking device for taking out the empty bag after the soft bag has been fully discharged is provided above the slide groove near the position of the blade.

[0014] Furthermore, the negative pressure bag taking device includes a vertical straw for sucking the empty bag in the chute, a guide tube fixed outside the straw, and a bag outlet pipe with one end connected to the middle part of the guide tube; the other end of the bag outlet pipe is connected to the vacuum device, and a rodless cylinder for driving the straw to move vertically is provided between the guide tube and the straw, and the upper end of the straw is connected to the vacuum device.

[0015] The positive effects of the present invention are:

[0016] 1. The present invention is installed at the feed inlet of the production equipment, and is provided with a chute, a blade is provided on each side wall of the chute, a cutter is provided at the discharge port at the lower end of the chute, and a cover plate is provided on the chute. When the soft bag slides down the chute under the action of gravity, the soft bag is cut into three connected cuts by the blade and the cutter, so that the material in the soft bag can flow out more easily. After the soft bag is cut, the material in the soft bag flows out from the discharge port. By using the present invention, the labor intensity of the operator is reduced, the spillage and dust in the process of material delivery are reduced, the waste is reduced, the health of the operator is not affected, and the operator's hand is not cut.

[0017] 2. The blade of the cutter is serrated, making it easier to cut the soft bag.

[0018] 3. A swingable baffle is provided at the discharge port of the chute. The baffle is fixedly connected to the cutter, and a cylinder for driving the baffle to swing is provided between the baffle and the chute. The baffle blocks the soft bag sliding down in the chute, so that the cutter cuts into the soft bag at a fixed depth, and the material in the soft bag does not flow out too quickly due to the cutter cutting too deep, thereby causing the material to overflow from the feed port of the production equipment. After the blade and the cutter cut the soft bag, the cylinder pushes the push rod to open the baffle, and at the same time drives the cutter out of the soft bag to prevent the cutter from blocking the flow of the material in the soft bag.

[0019] 4. The present invention is also provided with a frame, the lower end of the chute is rotatably connected to the frame, and the upper part of the chute is supported on a height-adjustable crossbeam of the frame. By adjusting the height of the crossbeam, the inclination angle of the chute can be adjusted from 30 degrees to 60 degrees. For soft bags of different materials and materials of different properties, the inclination angle of the chute is adjusted accordingly, so that a normal three-sided cut can be formed after the soft bag is opened, avoiding the phenomenon of incomplete cutting or excessive cutting, and also allowing the material of the soft bag to flow out smoothly after opening.

[0020] 5. The present invention is also provided with a negative pressure bag taking device for taking out the empty bags. No manual operation is required when taking out the empty bags, which improves the work efficiency, avoids the contact between the operators and the materials in the soft bags, improves the working environment, and does not affect the health of the operators. 6. A through hole and a negative pressure box are provided at the bottom of the chute to attract the soft bag when the soft bag discharges the material, so that the soft bag will not slide downward when discharging the material, making the discharge of the material smoother and reducing the material left in the soft bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of Example 1;

[0022] Figure 2 is a schematic structural diagram of Example 2;

[0023] Figure 3 is a schematic structural diagram of the lower portion of the chute in Example 2;

[0024] Figure 4 It is a schematic diagram of the cutout of the soft bag;

[0025] Figure 5 is a schematic structural diagram of Example 3;

[0026] Figure 6 It is a structural schematic diagram of a negative pressure bag taking device;

[0027] In the figure, 1, frame; 2, slide; 3, knife seat; 4, blade, 5, first notch; 6, cylinder; 7, cover plate; 8, baffle; 9, cutter; 10, second notch; 11, negative pressure box; 12, through hole; 13, negative pressure bag taking device; 1301, guide tube; 1302, bag outlet tube; 1303, straw; 1304, rodless cylinder. DETAILED DESCRIPTION

[0028] For the convenience of description, in the following description, the direction consistent with the direction of the slide groove is "longitudinal", and the direction perpendicular to the side wall of the slide groove is "transverse".

[0029] Example 1

[0030] like Figure 1As shown, a gravity-type soft bag opening machine includes a chute 2 with a downward inclination at the right end, two blades 4 respectively penetrating the two side walls of the chute 2, and a cutter 9 transversely arranged at the discharge port at the lower right end of the chute 2, and the angle between the chute 2 and the horizontal direction is 45 degrees.

[0031] The side wall of the chute 2 is provided with a longitudinal first notch 5 at the position corresponding to the blade 4. The two blades 4 are symmetrically arranged on the two side walls of the chute 2, and the two blades 4 are respectively arranged in the corresponding first notches 5. The cutting edges of the two blades 4 are both facing inwards. A rectangular knife seat 3 is welded on the outer walls of both sides of the chute 2 below the blades 4. The blades 4 are provided with a strip through hole consistent with the direction of the blade 4, and a screw is arranged in the through hole for fixing the blade 4 with the corresponding knife seat 3. By adjusting the relative position of the blade 4 and the knife seat 3, the length of the blade 4 extending into the chute 2 can be adjusted, so that the cutting depth of the blade 4 on the side of the soft bag can be adjusted.

[0032] The cutter 9 is parallel to the bottom surface of the chute 2, and is rectangular in shape, with a sawtooth blade. The blade of the cutter 9 faces the direction of the soft bag, and both ends of the cutter 9 are connected to the two side walls of the chute 2 through the two ends of the cutter 9 extending out of the side walls of the chute 2 are provided with pins for lateral positioning of the cutter 9, and the distance between the blade 4 and the bottom of the chute 2 and the distance between the cutter 9 and the bottom of the chute 2 are equal.

[0033] A rectangular cover plate 7 is fixedly connected to the top of the chute 2 by screws, the lower right end of the cover plate 7 is flush with the lower right end of the chute 2, and the upper left end of the cover plate 7 is staggered with the upper left end of the chute 2, so that a feed port is formed at the upper left part of the chute 2.

[0034] The present invention has a simple structure and can open the soft bag and put the material in without consuming energy, which reduces the labor intensity of the operator, reduces the spillage and dust in the process of putting the material in, reduces waste, does not affect the health of the operator, and does not cause the operator's hand to be cut. The serrated blade on the cutter 9 makes it easier to cut the soft bag, and the blade 4 and the cutter 9 form a lower part of the soft bag. Figure 4 The cutouts on the three sides are connected to make it easier for the material in the soft bag to flow out.

[0035] The actual use process of this embodiment is as follows:

[0036] 1. Fix the chute 2 at the inlet of the production equipment so that the outlet of the chute 2 is aligned with the inlet of the production equipment.

[0037] 2. Put the soft bag at the feeding port of the chute 2. Under the action of gravity, the soft bag slides along the chute 2 toward the discharging port. During the sliding process, the two sides of the soft bag are first cut by the two blades 4 respectively, and then the lower right end face of the soft bag hits the cutter 9, and the end face is cut horizontally by the cutter 9, so that the soft bag is formed as shown in the figure. Figure 4 Three-sided cutout shown.

[0038] 3. The material in the soft bag flows out from the incision and falls into the feed port of the production equipment. Then the empty soft bag is pulled out along the upper left side of the chute 2.

[0039] The invention has a simple structure and can open the soft bag and put the material in without consuming energy, thereby reducing the labor intensity of the operator, reducing the spillage and dust in the process of material putting, reducing waste, and will not affect the health of the operator or cut the operator's hands.

[0040] Example 2

[0041] like Figure 2 and Figure 3 As shown, a gravity-type soft bag opening machine comprises a chute 2 with a right end tilted downward, two blades 4 respectively penetrating through two side walls of the chute 2 , and a cutter 9 transversely arranged at a discharge port at the lower right end of the chute 2 .

[0042] The side wall of the chute 2 is provided with a longitudinal first notch 5 at the position corresponding to the blade 4. The two blades 4 are symmetrically arranged on the two side walls of the chute 2, and the two blades 4 are respectively arranged in the corresponding first notches 5. The cutting edges of the two blades 4 are both facing inwards. A rectangular knife seat 3 is welded on the outer walls of both sides of the chute 2 below the blades 4. The blades 4 are provided with a strip through hole consistent with the direction of the blade 4, and a screw is arranged in the through hole for fixing the blade 4 with the corresponding knife seat 3. By adjusting the relative position of the blade 4 and the knife seat 3, the length of the blade 4 extending into the chute 2 can be adjusted, so that the cutting depth of the blade 4 on the side of the soft bag can be adjusted.

[0043] The cutter 9 is parallel to the bottom surface of the chute 2, and is rectangular in shape, with a sawtooth blade. The blade of the cutter 9 faces the direction of the soft bag. A longitudinal second notch 10 is provided at the lower right end of the two side walls of the chute 2, and the second notch 10 is communicated with the lower right end of the chute 2. The two ends of the cutter 9 are respectively arranged in the corresponding second notch 10, and the cutter 9 and the second notch 10 are both clearance-matched, and the distance between the blade 4 and the bottom of the chute 2 and the distance between the cutter 9 and the bottom of the chute 2 are equal.

[0044] A rectangular cover plate 7 is fixedly connected to the top of the chute 2 by screws, the lower right end of the cover plate 7 is flush with the lower right end of the chute 2, and the upper left end of the cover plate 7 is staggered with the upper left end of the chute 2, so that a feed port is formed at the upper left part of the chute 2.

[0045] The present invention has a simple structure and can replace manual opening of soft bags, thereby reducing the labor intensity of operators, reducing the spillage and dust during the material delivery process, reducing waste, and not affecting the health of operators or cutting their hands. The serrated blade on the cutter 9 makes it easier to cut the soft bag, and the blade 4 and the cutter 9 form a thin film on the lower part of the soft bag. Figure 4 The cutouts on the three sides are connected to make it easier for the material in the soft bag to flow out.

[0046] A baffle 8 is provided at the discharge port of the chute 2, the top of the baffle 8 is hinged to the cover plate 7, the cutter 9 is located in the chute 2 and is vertically fixedly connected to the baffle 8 by screws, and a driving device for swinging the baffle 8 is provided between the baffle 8 and the chute 2, and the driving device is a cylinder 6. The cylinders 6 are symmetrically arranged on both sides of the chute 2, the cylinder bodies of the two cylinders 6 are respectively rotatably connected to the lower parts of the two outer side walls of the chute 2, and the push rods of the two cylinders 6 are respectively rotatably connected to the middle parts of the two side surfaces corresponding to the baffle 8.

[0047] The baffle 8 blocks the soft bag in the chute 2, so that the cutting knife 9 cuts into the soft bag to a fixed depth, and the material in the soft bag will not flow out too quickly due to the cutting depth of the cutter 9, causing the material to overflow from the inlet of the production equipment. After the cutter 9 cuts the soft bag, the cylinder 6 pushes the push rod to open the baffle 8, and at the same time drives the cutter 9 to be withdrawn from the soft bag, so as to prevent the cutter 9 from blocking the flow of the material in the soft bag.

[0048] The present invention also has a square tube welded frame 1, the lower right corner of the slide 2 is rotatably connected to the frame 1 through a bearing, and the upper left part of the slide 2 is supported on a height-adjustable crossbeam on the left side of the frame 1. The crossbeam and the column corresponding to the frame 1 are adjusted in height through adjustment holes set on the columns and screws screwed in the adjustment holes for fixing the crossbeam, so that the inclination angle of the slide 2 is adjustable from 30 degrees to 60 degrees.

[0049] According to soft bags of different materials and materials of different properties, the angle of the chute 2 is adjusted so that the soft bag can form a normal three-sided cut after opening, avoiding the phenomenon of incomplete cutting, and also allowing the material to flow out smoothly after opening the soft bag.

[0050] The actual use process of this embodiment is as follows:

[0051] 1. Place the frame 1 at the inlet of the production equipment, align the outlet of the chute 2 with the inlet of the production equipment, and adjust the inclination angle of the chute 2 according to the material of the soft bag and the properties of the material.

[0052] 2. Put the soft bag at the feeding port of the chute 2. Under the action of gravity, the soft bag slides along the chute 2 toward the discharging port. During the sliding process, the two sides of the soft bag are first cut by the two blades 4 respectively, and then the lower right end face of the soft bag hits the cutter 9, and the end face is cut horizontally by the cutter 9, so that the soft bag is formed as shown in the figure. Figure 4 Three-sided cutout shown.

[0053] 3. The cylinder 6 drives the baffle 8 to flip upward, so that the cutter 9 is separated from the soft bag. The material in the soft bag flows out from the incision and falls into the feed port of the production equipment. Then the empty soft bag is pulled out along the upper left side of the chute 2.

[0054] Example 3

[0055] like Figure 5 and Figure 6 As shown, the difference between this embodiment and embodiment 2 is that:

[0056] 1. A window is provided in the middle of the cover plate 7 near the blade 4, and a negative pressure bag taking device 13 fixedly connected to the frame 1 is provided above the window;

[0057] 2. Two transverse through holes are opened at the bottom of the chute 2 near the blade 4. A closed negative pressure box 11 is welded at the bottom of the chute 2 at the positions of the through holes. The negative pressure box 11 is connected to the air extraction device through a pipeline.

[0058] The negative pressure bag taking device 13 comprises a vertical guide tube 1301, the lower part of which is a bell mouth facing the window, and a vertical suction pipe 1303 is provided through the center of the guide tube 1301, and there is a gap between the suction pipe 1303 and the guide tube 1301. A bag outlet pipe 1302 is provided in the middle of the guide tube 1301, which is inclined upward, and the lower end of the bag outlet pipe 1302 is communicated with the guide tube 1301, and the upper end of the bag outlet pipe 1302 and the upper end of the suction pipe 1303 are both connected to the air extraction device.

[0059] The side wall of the guide tube 1301 is provided with a notch, and a vertical rodless cylinder 1304 is provided in the notch. The cylinder side of the rodless cylinder 1304 is fixedly connected to the side wall of the guide tube 1301 by screws, and the slider of the rodless cylinder 1304 is fixedly connected to the suction tube 1303 by screws. The bottom of the rodless cylinder 1304 is fixedly connected to the frame by screws.

[0060] When the soft bag slides to the bottom of the chute 2, under the action of vacuum suction, the negative pressure box 11 sucks the soft bag to the bottom of the chute 2 through the through hole 12, so that the soft bag will not slide downward when discharging materials, making the discharge of materials smoother and reducing the material left in the soft bag. After the materials in the soft bag are completely discharged, it becomes an empty bag, and the rodless cylinder 1304 drives the suction pipe 1303 to move downward. Under the action of vacuum suction, the bottom of the suction pipe 1303 sucks the empty bag, and then the negative pressure box 11 stops sucking the empty bag, and the rodless cylinder 1304 drives the suction pipe 1303 and the sucked empty bag to move upward in the guide tube 1301. After the empty bag reaches the part where the bag outlet pipe 1302 is connected to the guide tube 1301, under the action of vacuum suction, the empty bag is sucked into the bag outlet pipe 1302 and transported away.

[0061] This embodiment uses a machine to take out the empty bag after the soft bag has been emptied of its internal materials, without manual operation, thereby improving work efficiency, avoiding contact between operators and the materials in the soft bag, improving the working environment, and not affecting the health of operators.

[0062] The above-mentioned embodiments describe content in a relatively detailed and specific manner, expressing the preferred embodiments of the present invention, and are only used to illustrate the technical ideas and features of the present invention, with the purpose of enabling technicians in the field to understand the contents of the present invention and implement them accordingly, but are not limited to the present invention alone, and the protection scope of the present invention cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the present invention, for researchers or technicians in the field, without departing from the structure of the present invention, local improvements within the system and changes and conversions between subsystems, etc., are still within the protection scope of the present invention.

Claims

1. A gravity-type soft bag opening machine, characterized in that: It comprises an inclined chute (2), a blade (4) fixedly arranged on the side wall of the chute (2) for cutting the side of the soft bag, and a cutter (9) arranged at the discharge port at the lower end of the chute (2) for cutting the soft bag at one end close to the discharge port; the cutter (9) is arranged between the two side walls of the chute (2), the cutter (9) is perpendicular to the two side walls of the chute (2), the cutter (9) is parallel to the bottom surface of the chute (2), the blade of the cutter (9) faces the direction of the soft bag, and the distance between the blade (4) and the bottom of the chute (2) and the distance between the cutter (9) and the bottom of the chute (2) are equal; The top of the chute (2) is fixedly connected to a cover plate (7), the discharge port of the chute (2) is provided with a baffle plate (8), the top of the baffle plate (8) is rotatably connected to the chute (2) or the cover plate (7), the cutter (9) is located in the chute (2) and fixedly connected to the baffle plate (8), and a cylinder (6) for swinging the baffle plate (8) is provided between the baffle plate (8) and the chute (2); A negative pressure bag taking device (13) for taking out an empty soft bag after all the materials have been discharged from the soft bag is provided above the chute (2) near the location of the blade (4); The negative pressure bag taking device (13) comprises a vertical suction pipe (1303) for sucking the hollow bag in the chute (2), a guide tube (1301) fixedly sleeved outside the suction pipe (1303), and a bag outlet pipe (1302) one end of which is connected to the middle part of the guide tube (1301); the other end of the bag outlet pipe (1302) is connected to the air suction device, and a rodless cylinder (1304) is provided between the guide tube (1301) and the suction pipe (1303) for driving the suction pipe (1303) to move vertically; the upper end of the suction pipe (1303) is connected to the air suction device.

2. A gravity-type soft bag opening machine according to claim 1, characterized in that: The cutter (9) is fixedly connected to the slide groove (2).

3. The gravity-type soft bag opening machine according to claim 1, characterized in that: The cutting blade of the cutting knife (9) is serrated.

4. A gravity-type soft bag opening machine according to claim 1, characterized in that: It also includes a frame (1), the lower part of the slide slot (2) is rotatably connected to the frame (1), and the upper part is supported on the frame (1).

5. The gravity-type soft bag opening machine according to claim 1, characterized in that: A cover plate (7) is fixedly connected to the top of the slide groove (2).

6. The gravity-type soft bag opening machine according to claim 1, characterized in that: A through hole (12) is provided at the bottom of the slide groove (2) near the location of the blade (4), and a negative pressure box (11) with negative pressure inside is provided at the bottom of the slide groove (2) at the location of the through hole, and the negative pressure box (11) is connected to the air extraction device.

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