Packaging device with combined scale

Abstract

The invention discloses a packaging device with a combined scale, and relates to the field of packaging equipment, the packaging device comprises a rack and the combined scale mounted on the rack, the lower end of the combined scale is provided with a feeding hopper fixed on the rack, the bottom of the feeding hopper is provided with a feeding pipe, and a conveying belt for conveying packaging bags is arranged below the feeding pipe; a bag opening device is arranged at the lower end of the feeding pipe, and the bag opening device stretches outwards to open the bottom of the packaging bag while stretching into the packaging bag. When packaging and charging are carried out, materials combined through the combination scale are put into the injection hopper; the bag opening device stretches into the packaging bag to open the bottom of the packaging bag, so that the containing space of the bottom of the packaging bag is enlarged, materials can be conveniently filled into the packaging bag, the bottom of the packaging bag is fully filled, the situation that follow-up packaging bag sealing is affected due to the fact that the materials are filled into a bag opening is avoided, the overall gravity center is lowered, and the packaging bag is not prone to inclining.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, and in particular to a packaging device with a combination weigher. Background Art

[0002] Combination weigher is a device that uses the principle of combination weighing for weighing. It contains multiple independent weighing units, each of which can be weighed independently. The material is distributed to the storage hopper of each weighing unit through the vibrating plate. When the weighing hopper under the storage hopper is empty, the storage hopper is opened to release the material and weigh it. By selecting a combination from multiple weighing units, the total weight of these units is close to the target weight, achieving high-precision weighing. In modern industrial production, especially in food processing, daily chemical product manufacturing and other industries that require quantitative packaging, combination weighers, as an advanced quantitative weighing equipment, have been widely used, and packaging devices with combination weighers have become an indispensable and important equipment in modern industrial production.

[0003] The existing combination weigher packaging equipment guides the materials into the packaging bag through the feeding pipe during the feeding and packaging. However, the bottom of the packaging bag is flat. When the materials are added, the materials with low density are not easy to expand the bottom of the packaging bag under the action of their own gravity, which makes the material holding space at the bottom of the packaging bag smaller. The added materials overflow to the bag opening and affect the subsequent sealing process of the bag opening. Moreover, the bottom of the packaging bag is not filled with enough materials, which makes it difficult for the bottom of the packaging bag to be placed upright, which brings inconvenience to the material packaging operation. Summary of the invention

[0004] The object of the present invention is to solve the above technical problems and provide a packaging device with a combination weigher.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A packaging device with a combination weigher comprises a frame and a combination weigher mounted on the frame, wherein a filling hopper fixed on the frame is arranged at the lower end of the combination weigher, a feeding pipe is arranged at the bottom of the filling hopper, and a conveyor belt for conveying packaging bags is arranged below the feeding pipe; the feeding pipe is used to introduce materials into the packaging bag; a bag-supporting device is arranged at the lower end of the feeding pipe, and the bag-supporting device extends outwards while extending into the packaging bag to open the bottom of the packaging bag.

[0006] Furthermore, a movable tube is sleeved on the outer side of the feeding tube, and a first cylinder is installed on the tube wall of the feeding tube. The telescopic rod end of the first cylinder is fixedly connected to the upper end of the movable tube, and the telescopic rod of the first cylinder is extended to drive the movable tube to move downward so that the lower end of the movable tube extends into the packaging bag.

[0007] Furthermore, the bag-holding device includes a flip plate hinged at the lower end of the movable tube, and the flip plates are symmetrically arranged in two groups. The end of the flip plate away from the movable tube is hingedly connected to a first support rod, and the first support rod is folded toward the flip plate, and the first support rod on one group of flip plates is hinged with the first support rod on the other group of flip plates through a first pin shaft; a mounting seat is provided on the side wall of the movable tube, and a first gear is rotatably connected to the mounting seat, and a first rack and a second rack sliding up and down are provided in the mounting seat, and the first gear is located between the first rack and the second rack and meshes with the first rack and the second rack respectively to form a gear and rack transmission; the lower end of the first rack is connected to the first pin shaft, and the upper end of the second rack is fixedly connected to the feeding tube; when the movable tube moves downward, it drives the flip plate to flip outward to hold the packaging bag open.

[0008] Furthermore, the upper end of the second rack is fixedly connected with a fixing rod, and the fixing rod is fixed on the feeding pipe.

[0009] Furthermore, the two groups of flip plates are hinged on two sides of the bottom of the movable tube respectively.

[0010] Furthermore, the first support rod is located on a side of the flip plate away from the center of the movable tube.

[0011] Furthermore, a translation mechanism is provided on the frame, and the translation mechanism includes a translation track fixed on the frame, and the translation track is provided with two pieces in parallel and the two pieces are respectively located on both sides of the feeding pipe, and a slider is slidably connected to the translation track, and a bag opening mechanism is installed on the slider, and the bag opening mechanism is used to open the packaging bag; the same connecting plate is fixedly connected between the sliders on the two translation tracks, and a second cylinder is installed on the frame, and the piston rod end of the second cylinder is fixedly connected to the connecting plate to drive the connecting plate to move.

[0012] Furthermore, the bag opening mechanism includes a mounting plate fixed on a slider, a bag opening cylinder is mounted on the mounting plate, a suction cup is fixedly connected to the piston rod end of the bag opening cylinder, and the suction cup is connected to a vacuum pipeline through the cylinder so that the suction cup generates vacuum suction to adsorb the packaging bag, and the suction cups on the slider on both sides of the feeding tube are arranged relatively.

[0013] Furthermore, a gate valve is provided on the feeding pipe near the injection hopper to control the opening and closing of the channel in the feeding pipe, thereby controlling the time for feeding.

[0014] Furthermore, support frames are provided on both sides of the conveyor belt, the support frames are located above the conveyor belt, and the support frames are located on both sides of the packaging bag to support the packaging bag.

[0015] The packaging device with a combination scale provided by the present invention has the following beneficial effects: by adopting the above technical scheme, when performing packaging and feeding, the materials are added to the storage hopper of the combination scale, and matched and combined by the combination scale, and the combined materials are put into the filling hopper; the feeding tube faces the open packaging bag and drives the bag-holding device to extend into the packaging bag, and at the same time automatically drives the bag-holding device to open the bottom of the packaging bag, and then the materials on the feeding tube are put into the packaging bag; the bag-holding device extends into the packaging bag to open the bottom of the packaging bag, so that the accommodating space at the bottom of the packaging bag becomes larger, which is convenient for filling the materials into the packaging bag and makes the bottom of the packaging bag full, avoids the filling of materials to the bag opening to affect the subsequent sealing of the packaging bag, and ensures that the bottom of the packaging bag is full, and the overall center of gravity is lowered, so that the packaging bag is not easy to tilt; the movable tube is driven downward by the first cylinder to make the lower end of the movable tube extend into When the bag is filled with materials, the movable tube is synchronously driven by the first cylinder to slowly lift upward, thereby facilitating direct introduction of materials into the bag, thereby preventing the filled materials from drifting to the outside of the bag when falling from above the bag opening; by arranging a flip plate at the bottom of the movable tube, when the movable tube is driven by the first cylinder to extend downward into the bag, the movable tube moves downward, automatically driving the first support rod to rotate and drive the flip plate to flip outward, and the flip plate flips outward to open the inside of the bag, thereby facilitating the filling of materials at the bottom of the bag; during the feeding process, the movable tube is slowly lifted upward, thereby driving the flip plate to slowly move toward the middle and reset, thereby preventing the flip plate from moving upward in an outwardly flipped state to bring the materials out of the bag and causing the materials to spill, and during the upward lifting of the movable tube, the width of the flip plate is reduced after the flip plate is reset, thereby facilitating the upward lifting of the flip plate and its removal from the bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings: Figure 1 A schematic structural diagram of a packaging device with a combination weigher provided by the present invention; Figure 2 A schematic diagram of the partial structure of a packaging device with a combination weigher provided by the present invention; Figure 3 A schematic side structural view of a translation mechanism in a packaging device with a combination weigher provided by the present invention; Figure 4 A left-side structural schematic diagram of a partial structure of a packaging device with a combination weigher provided by the present invention; Figure 5 for Figure 4 Schematic diagram of the local structure of part A in the middle; Figure 6 The present invention is a schematic diagram of a state in which a movable tube in a packaging device with a combination weigher is extended into a packaging bag.

[0017] Explanation of the numbers in the figure: 1. Frame; 2. Combination weigher; 3. Filling hopper; 4. Feeding pipe; 41. Gate valve; 5. Conveyor belt; 51. Support frame; 6. Bag supporting device; 61. Turning plate; 62. First support rod; 63. Mounting seat; 64. First gear; 65. First rack; 66. Second rack; 67. Fixed rod; 7. Movable tube; 71. First cylinder; 8. Translation mechanism; 81. Translation track; 82. Slider; 83. Connecting plate; 84. Second cylinder; 9. Bag opening mechanism; 91. Mounting plate; 92. Bag opening cylinder; 93. Suction cup; 10. Packaging bag. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0021] like Figure 1-Figure 6 As shown, a packaging device with a combination weigher includes a frame 1 and a combination weigher 2 installed on the frame 1, the lower end of the combination weigher 2 is provided with a filling hopper 3 fixed on the frame 1, the bottom of the filling hopper 3 is provided with a feeding pipe 4, and a conveyor belt 5 for conveying a packaging bag 10 is provided below the feeding pipe 4; the feeding pipe 4 is used to introduce materials into the packaging bag 10; the lower end of the feeding pipe 4 is provided with a bag-supporting device 6, and the bag-supporting device 6 extends outward while extending into the packaging bag 10 to support the bottom of the packaging bag 10.

[0022] By adopting the above technical scheme, when packaging and feeding, the materials are added to the storage hopper of the combination scale 2, and matched and combined by the combination scale 2, and the combined materials are put into the filling hopper 3; the feeding tube 4 faces the open packaging bag 10 and drives the bag-holding device 6 to extend into the packaging bag 10, and automatically drives the bag-holding device 6 to open the bottom of the packaging bag 10, and then the materials on the feeding tube 4 are put into the packaging bag 10; the bag-holding device 6 extends into the packaging bag 10 to open the bottom of the packaging bag 10, so that the accommodating space at the bottom of the packaging bag 10 becomes larger, which is convenient for filling the materials in the packaging bag 10 and making the bottom of the packaging bag 10 full, avoiding the filling of materials to the bag mouth to affect the subsequent sealing of the packaging bag 10, and ensuring that the bottom of the packaging bag 10 is full, and the overall center of gravity is lowered, so that the packaging bag 10 is not easy to tilt.

[0023] Specifically, the outer side of the feeding tube 4 is sleeved with a movable tube 7, and a first cylinder 71 is installed on the tube wall of the feeding tube 4. The telescopic rod end of the first cylinder 71 is fixedly connected to the upper end of the movable tube 7, and the telescopic rod of the first cylinder 71 is extended to drive the movable tube 7 to move downward so that the lower end of the movable tube 7 extends into the packaging bag 10. By sleeved with the movable tube 7 on the outer side of the feeding tube 4, when filling materials into the packaging bag 10, the movable tube 7 is driven to extend downward by the first cylinder 71, so that the lower end of the movable tube 7 extends into the bottom of the packaging bag 10, and when filling materials, the movable tube 7 is synchronously driven by the first cylinder 71 to slowly lift upward, so as to facilitate the direct introduction of materials into the packaging bag 10, and avoid the added materials from falling to the outside of the bag opening when falling from the top of the packaging bag 10, and the movable tube 7 extends into the packaging bag 10 for feeding, and the added materials are close to the lower end of the movable tube 7, so as to avoid dust overflow after the materials fall into the packaging bag 10, and reduce the dust generated by the added materials.

[0024] Specifically, the bag-supporting device 6 includes a flip plate 61 hinged at the lower end of the movable tube 7, and the flip plates 61 are symmetrically arranged in two groups. The end of the flip plate 61 away from the movable tube 7 is hingedly connected to a first support rod 62, and the first support rod 62 is folded toward the flip plate 61, and the first support rod 62 on one group of flip plates 61 is hinged with the first support rod 62 on the other group of flip plates 61 through a first pin shaft; a mounting seat 63 is arranged on the side wall of the movable tube 7, and a first gear 64 is rotatably connected to the mounting seat 63. The seat 63 is provided with a first rack 65 and a second rack 66 which slide up and down, the first gear 64 is located between the first rack 65 and the second rack 66 and is respectively meshed with the first rack 65 and the second rack 66 to form a gear-rack transmission; the lower end of the first rack 65 is connected to the first pin shaft, specifically, the first rack 65 and the first pin shaft can be fixedly connected or rotatably connected; the upper end of the second rack 66 is fixedly connected to the feeding pipe 4; when the movable pipe 7 moves downward, it drives the flip plate 61 to flip outward to open the packaging bag 10. By arranging a flip plate 61 at the bottom of the movable tube 7, when the movable tube 7 is driven by the first cylinder 71 to extend downward into the packaging bag 10, the movable tube 7 moves downward, driving the first gear 64 to move downward relative to the second rack 66, and the second rack 66 drives the first gear 64 to rotate. The first gear 64 rotates and drives the first rack 65 to move downward. The first rack 65 moves downward and drives the first pin to move downward, driving the first support rod 62 and the hinged end of the first pin to move downward, and then the first support rod 62 rotates and drives the flip plate 61 to flip outward. The flip plate 61 flips outward to open the inside of the packaging bag 10, so that the material is filled at the bottom of the packaging bag 10; during the feeding process, the movable tube 7 is slowly lifted upward, and then the flip plate 61 is driven to slowly move toward the middle and reset, so as to avoid the flip plate 61 moving upward in the outward flipped state to bring the material out of the packaging bag 10 and cause the material to spill, and during the upward lifting of the movable tube 7, the width of the flip plate 61 is reduced after it is reset, so that the flip plate 61 is lifted upward and removed from the packaging bag 10.

[0025] Specifically, the upper end of the second rack 66 is fixedly connected with a fixing rod 67, and the fixing rod 67 is fixed on the feeding tube 4. The second rack 66 is fixedly connected to the feeding tube 4 by the fixing rod 67, so that when the movable tube 7 moves downward relative to the feeding tube 4, the second rack 66 drives the first gear 64 to rotate. The two groups of flip plates 61 are respectively hinged on both sides of the bottom of the movable tube 7. This prevents the flip plate 61 from blocking the internal feeding channel of the movable tube 7, which is conducive to the falling of materials. The first support rod 62 is located on the side of the flip plate 61 away from the center of the movable tube 7. It is convenient for structural arrangement and avoids blocking feeding.

[0026] Specifically, the frame 1 is provided with a translation mechanism 8, which includes a translation track 81 fixed on the frame 1. The translation track 81 is provided with two parallel pieces and the two translation tracks 81 are respectively located on both sides of the feeding tube 4. The translation track 81 is slidably connected with a slider 82, and the slider 82 is installed with a bag opening mechanism 9, which is used to open the packaging bag 10; the sliders 82 on the two translation tracks 81 are fixedly connected with the same connecting plate 83, and the frame 1 is provided with a second cylinder 84, and the piston rod end of the second cylinder 84 is fixedly connected to the connecting plate 83 to drive the connecting plate 83 to move. The connecting plate 83 is driven to move by the second cylinder 84, which drives the slider 82 to move, and then drives the bag opening mechanism 9 to move. After the packaging bag 10 is adsorbed, the bag opening mechanism 9 moves to the bottom of the feeding tube 4 and opens the bag mouth of the packaging bag 10 to facilitate the injection of materials.

[0027] Specifically, the bag opening mechanism 9 includes a mounting plate 91 fixed on the slider 82, and a bag opening cylinder 92 is mounted on the mounting plate 91. A suction cup 93 is fixedly connected to the piston rod end of the bag opening cylinder 92. The suction cup 93 is connected to the vacuum pipeline through the cylinder so that the suction cup 93 generates vacuum suction to adsorb the packaging bag 10. The suction cups 93 on the slider 82 on both sides of the feeding tube 4 are arranged relatively. When opening the packaging bag 10, the piston rod ends of the bag opening cylinder 92 on both sides of the packaging bag 10 extend out, so that the suction cup 93 abuts against both sides of the packaging bag 10, and the air valve in the vacuum pipeline is controlled to generate negative pressure in the suction cup 93, so that the suction cup 93 and the surface of the packaging bag 10 are adsorbed together, and the piston rod of the bag opening cylinder 92 retracts to drive the bag film at the bag opening position of the packaging bag 10 to move to both sides and separate with the suction cup 93, thereby realizing the bag opening of the packaging bag 10, so that the material can be put into the packaging bag 10.

[0028] Specifically, a gate valve 41 is provided on the feeding pipe 4 near the injection hopper 3. The gate valve 41 controls the opening and closing of the channel in the feeding pipe 4, thereby controlling the time for feeding.

[0029] Specifically, support frames 51 are provided on both sides of the conveyor belt 5, and the support frames 51 are located above the conveyor belt 5. The support frames 51 are located on both sides of the packaging bag 10 to support the packaging bag 10. By providing the support frames 51, after the packaging bag 10 is loaded with materials, the vacuum suction cup 93 releases the packaging bag 10, so that the packaging bag 10 filled with materials is located on the conveyor belt 5. At this time, the support frames 51 are attached to both sides of the packaging bag 10 to support the packaging bag 10 to prevent the packaging bag 10 from tipping over. The conveyor belt 5 drives the packaging bag 10 to move the packaging bag 10 to the next working position for sealing.

[0030] The parts not involved in this technical solution can be implemented by using existing technologies.

[0031] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of the present invention to be protected includes the attached claims and their equivalents.

Claims

1. A packaging device with a combination weigher, characterized in that: The invention comprises a frame (1) and a combination weigher (2) mounted on the frame (1); the lower end of the combination weigher (2) is provided with a material injection hopper (3) fixed on the frame (1); the bottom of the material injection hopper (3) is provided with a feeding pipe (4); a conveyor belt (5) for conveying a packaging bag (10) is provided below the feeding pipe (4); the feeding pipe (4) is used to introduce materials into the packaging bag (10); the lower end of the feeding pipe (4) is provided with a bag-supporting device (6); the bag-supporting device (6) extends outwards while extending into the packaging bag (10) to support the bottom of the packaging bag (10).

2. A packaging device with a combination weigher according to claim 1, characterized in that: A movable tube (7) is sleeved on the outer side of the feeding tube (4), and a first cylinder (71) is installed on the tube wall of the feeding tube (4). The telescopic rod end of the first cylinder (71) is fixedly connected to the upper end of the movable tube (7), and the telescopic rod of the first cylinder (71) is extended to drive the movable tube (7) to move downward so that the lower end of the movable tube (7) extends into the packaging bag (10).

3. A packaging device with a combination weigher according to claim 2, characterized in that: The bag-supporting device (6) comprises a flip plate (61) hinged at the lower end of the movable tube (7), and the flip plates (61) are symmetrically arranged in two groups. The end of the flip plate (61) away from the movable tube (7) is hingedly connected to a first support rod (62), and the first support rod (62) is folded toward the flip plate (61), and the first support rod (62) on one group of flip plates (61) is hinged with the first support rod (62) on the other group of flip plates (61) through a first pin shaft; a mounting seat (63) is arranged on the side wall of the movable tube (7), and a rotating shaft in the mounting seat (63) is provided. A first gear (64) is connected, and a first rack (65) and a second rack (66) are provided in the mounting seat (63) for sliding up and down. The first gear (64) is located between the first rack (65) and the second rack (66) and is respectively meshed with the first rack (65) and the second rack (66) to form a gear-rack transmission; the lower end of the first rack (65) is connected to the first pin shaft, and the upper end of the second rack (66) is fixedly connected to the feeding pipe (4); when the movable pipe (7) moves downward, it drives the flip plate (61) to flip outward to open the packaging bag (10).

4. A packaging device with a combination weigher according to claim 3, characterized in that: The upper end of the second rack (66) is fixedly connected to a fixing rod (67), and the fixing rod (67) is fixed on the feeding pipe (4).

5. The packaging device with a combination weigher according to claim 3, characterized in that: The two groups of flip plates (61) are respectively hinged on two sides of the bottom of the movable tube (7).

6. The packaging device with a combination weigher according to claim 3, characterized in that: The first support rod (62) is located on a side of the flip plate (61) away from the center of the movable tube (7).

7. The packaging device with a combination weigher according to claim 2, characterized in that: The frame (1) is provided with a translation mechanism (8), the translation mechanism (8) comprising a translation track (81) fixed on the frame (1), the translation track (81) being provided with two pieces in parallel and respectively located on both sides of the feeding pipe (4), a slider (82) being slidably connected to the translation track (81), a bag opening mechanism (9) being installed on the slider (82), the bag opening mechanism (9) being used for opening the packaging bag (10); a same connecting plate (83) is fixedly connected between the sliders (82) on the two translation tracks (81), a second cylinder (84) being installed on the frame (1), a piston rod end of the second cylinder (84) being fixedly connected to the connecting plate (83) to drive the connecting plate (83) to move.

8. A packaging device with a combination weigher according to claim 7, characterized in that: The bag opening mechanism (9) comprises a mounting plate (91) fixed on a slider (82), a bag opening cylinder (92) being mounted on the mounting plate (91), a suction cup (93) being fixedly connected to the piston rod end of the bag opening cylinder (92), the suction cup (93) being connected to a vacuum pipeline via the cylinder so that the suction cup (93) generates vacuum suction to absorb the packaging bag (10), and the suction cups (93) on the slider (82) on both sides of the feeding pipe (4) are arranged opposite to each other.

9. The packaging device with a combination weigher according to claim 2, characterized in that: A gate valve (41) is provided on the feeding pipe (4) near the injection hopper (3).

10. The packaging device with a combination weigher according to claim 2, characterized in that: Support frames (51) are provided on both sides of the conveyor belt (5); the support frames (51) are located above the conveyor belt (5); and the support frames (51) are located on both sides of the packaging bag (10) to support the packaging bag (10).

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