Thin open bag clamping device

Abstract

The utility model discloses a thin open bag clamping device which comprises a movable hanging bracket, a hoisting frame, a bag clamping mechanism and a side supporting mechanism. A rail clamping wheel set is installed on the movable hanging bracket, a hanging seat is arranged at one end of the hoisting frame, the hoisting frame is connected with the movable hanging bracket through the hanging seat, a set of hoisting rails are installed in the middle of the hoisting frame, the two ends of the hoisting rails are fixed to the two short frame edges of the hoisting frame respectively, and the hoisting rails are fixed to the two short frame edges of the hoisting frame respectively. The two bag opening cylinders are oppositely installed on the short frame edge, the two bag clamping mechanisms are symmetrically installed on the hoisting track, telescopic rods of the two bag opening cylinders are connected with the two bag clamping mechanisms respectively, and the two side supporting mechanisms are symmetrically installed on the outer sides of the two long frame edges of the hoisting frame. Each side supporting mechanism comprises a swing rod and a swing air cylinder, and a side supporting head is arranged at the top end of each swing rod. By means of the mode, the longitudinal size can be obviously reduced, and the bag opening is opened to be hexagonal.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery, and in particular to a thin open bag clamping device. Background Technology

[0002] Open-mouth bags are widely used for packaging fine chemical raw materials such as ultrafine powders, metallic and non-metallic mineral powders, pharmaceutical chemical raw materials, dyes, pigments, calcium carbonate, kaolin, phenolic resins, and even food products such as flour and seasonings. Because open-mouth bag filling machines offer advantages such as high filling efficiency, accurate metering, low manpower requirements, reduced worker workload, and improved working environment, they are widely used in industries beyond just the aforementioned products.

[0003] A complete set of open-bag filling machines typically includes: an automatic quantitative weighing device (i.e., an automatic quantitative scale), a bag hopper, an automatic bag loading device, an automatic bag clamping device (i.e., an automatic bag opening clamping device, hereinafter the same), a feeding device, an automatic bag tapping device, an automatic bag transport trolley, an automatic sealing and guiding device, and an automatic sealing device. The operation process of these devices is as follows: the automatic quantitative weighing device (i.e., an automatic quantitative scale), bag hopper, automatic bag loading device, automatic bag clamping device, feeding device, automatic bag tapping device, automatic bag transport trolley, automatic sealing and guiding device, and automatic sealing machine. The operation process of these devices is as follows: the automatic quantitative weighing device... The automatic bag reader provides an empty open bag ready for filling. An automatic bag feeding device automatically picks up an empty open bag and feeds it to an automatic bag clamping device. The automatic bag clamping device clamps the bag opening on both sides. Material weighed by an automatic quantitative weighing device is then introduced into the open bag via a feeding device. An automatic bag-tapping device taps the bag to release air mixed in with the material and to make the material relatively compact. An automatic bag transport trolley then holds the filled and tapped open bag (at this point, the automatic bag clamping device releases) and delivers it to the automatic sealing inlet device, where an automatic sealing machine seals it. In the above-mentioned automatic filling equipment configuration, the automatic bag clamping device is a very important component because its operational efficiency directly affects subsequent processes such as the feeding device. Existing bag clamping devices, such as the open bag clamping device CN2019101807896 applied for by our company in 2019, are usually complex in structure, have a large longitudinal volume, are not easy to move, and are inconvenient to adjust their position to cooperate with the automatic bag feeding device. Moreover, when the bag opening is opened to both sides, the shape is long and narrow, while the feeding tube is generally circular. Thus, the maximum diameter of the feeding tube is limited by the length of the short side of the opened shape, and cannot be increased. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a thin open bag clamping device that can reduce the longitudinal dimension of the clamping device and improve the filling efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A thin open-pocket clamping device is provided, comprising: a movable frame, a lifting frame, a clamping mechanism, and a side support mechanism; the movable frame is equipped with a track clamping wheel assembly, which enables the entire thin open-pocket clamping device to move horizontally along a corresponding track. The lifting frame is rectangular in shape, with a mounting base at one end, connecting the lifting frame to the movable frame via the mounting base. A set of lifting tracks is installed in the middle of the lifting frame, with both ends of the tracks fixed to the two short sides of the lifting frame, and the tracks connecting to the two long sides of the lifting frame. Parallel to each other, two bag-opening cylinders are installed opposite each other on the short frame sides at both ends of the hoisting track. There are two bag-clamping mechanisms, symmetrically installed on the hoisting track. The telescopic rods of the two bag-opening cylinders are respectively connected to the two bag-clamping mechanisms. The two bag-opening cylinders can drive the two bag-clamping mechanisms to move horizontally and reciprocally relative to each other along the hoisting track to complete the closing and opening actions. There are two side support mechanisms, symmetrically installed on the outer sides of the two long frame sides of the hoisting frame. Each side support mechanism includes a swing rod and a swing cylinder. The top of the swing rod is equipped with a side support head. The swing cylinder can drive the swing rod to swing with the movement of the bag-opening cylinder, laterally opening the bag mouth, and together with the bag-clamping mechanism, opening the bag mouth of the open bag into a hexagonal shape.

[0006] In a preferred embodiment of the present invention, two bag-opening cylinder positioning seats are symmetrically arranged below the two short frame sides of the hoisting frame about the center of the hoisting frame, and one bag-opening cylinder is installed in each bag-opening cylinder positioning seat.

[0007] In a preferred embodiment of this utility model, the bag clamping mechanism includes a bag clamping plate, a clamping plate drive seat, a clamping cylinder, a crank push plate, and a bag clamping strip. The clamping plate drive seat has a crossbeam at each end, and each crossbeam has a pair of track clamping wheels mounted at both ends. The bottom of the clamping plate drive seat has a hinged seat connected to the end of the telescopic rod of the bag opening cylinder. A T-shaped positioning block is fixedly mounted on the top of the clamping plate drive seat. The bag clamping plate is fixed to the T-shaped positioning block and extends downwards towards the lifting frame. One end of the crank push plate is rotatably hinged to the clamping plate drive seat, and the back of the other end is hinged to the telescopic rod of the clamping cylinder. The bottom of the clamping cylinder is also hinged to the clamping plate drive seat. The bag clamping strip is mounted on the front of the crank push plate. When the telescopic rod of the clamping cylinder extends, it pushes the crank push plate forward, causing the bag clamping strip to press against the bag clamping plate. A cover plate is also installed on the bag clamping mechanism. The surface of the bag clamping plate has teeth at the point where it presses against the bag clamping strip. The bag clamping strip is a rubber clamping strip.

[0008] In a preferred embodiment of the present invention, a swing arm seat is provided on the outer side of the long frame of the hoisting frame, the body of the swing arm is hinged to the swing arm seat, and swing cylinder fixing seats are symmetrically provided on the outer side of the short frame at the end where the hanging seat is located. The swing cylinder is fixed on the swing cylinder fixing seat, and the top end of the telescopic rod of the swing cylinder is hinged to the end of the swing arm.

[0009] The beneficial effects of this utility model are: This utility model is an optimization of the structure of the existing bag clamping device of the packaging machine. Through the optimization of the application, the structure of the bag clamping mechanism of the packaging machine is clear and concise, the longitudinal dimension is significantly reduced, and it is convenient to adjust the bag position according to the bag filling needs. Moreover, the opening shape of this device to the bag opening is hexagonal, which can effectively increase the diameter of the tube opening of the bag feeding tube, thereby improving the overall efficiency of filling. Attached Figure Description

[0010] Figure 1 This is a top view schematic diagram of the bag-supporting action principle of a preferred embodiment of the present invention;

[0011] Figure 2 yes Figure 1 Top view of the central support structure;

[0012] Figure 3 yes Figure 1 Top view of the middle sliding rail structure;

[0013] Figure 4 This is a side view of the embodiment shown without being bagged.

[0014] Figure 5 yes Figure 4 Side view of the installation structure of the middle slide rail and the clamping plate seat;

[0015] Figure 6 yes Figure 5 Enlarged schematic diagram of a portion of the structure at the location of the middle sandwich panel;

[0016] Figure 7 This is a side view schematic diagram of the structure when the bag is clamped in the embodiment.

[0017] Figure 8 yes Figure 6 A schematic diagram of the clamping action of the middle clamp bag holder;

[0018] The components in the attached diagram are labeled as follows:

[0019] 1. Open bag; 2. Feeding mechanism; 3. Mobile hanger; 4. Lifting frame; 5. Lifting track; 6. Swing rod; 7. Swing cylinder; 8. Bag opening cylinder; 9. Bag clamping mechanism;

[0020] 401. Hanging bracket; 402. Swing rod bracket; 403. Swing cylinder positioning bracket; 404. Bag opening cylinder positioning bracket;

[0021] 601. Shaft; 602. Side support head;

[0022] 901. Clamping plate drive seat, 902. Cover plate, 903. Clamping cylinder, 904. Crank push plate, 905. Bag clamping plate, 906. Bag clamping strip, 907. T-shaped positioning block, 908. Crossbeam, 909. Track clamping wheel pair. Detailed Implementation

[0023] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0024] Please see Figures 1 to 8 The embodiments of this utility model include:

[0025] A thin open-pocket clamping device includes: a movable frame 3, a lifting frame 4, a clamping mechanism, and a side support mechanism. The movable frame 3 is equipped with a track-holding wheel assembly, which allows the entire thin open-pocket clamping device to move horizontally along a corresponding track. The lifting frame 4 is rectangular in shape, with a mounting base 401 at one end. The lifting frame 4 is connected to the movable frame 3 via the mounting base 401. A set of lifting rails 5 is installed in the middle of the lifting frame 4, with both ends of the lifting rails 5 fixed to two short sides of the lifting frame 4. The lifting rails 5 are parallel to the two long sides of the lifting frame 4. Two opening cylinders 8 are installed opposite each other on the two short sides of the lifting frame 4.

[0026] There are two bag clamping mechanisms 9, symmetrically installed on the hoisting track 5. The telescopic rod of each bag opening cylinder 8 is connected to one bag clamping mechanism 9. The two bag opening cylinders 8 can drive the two bag clamping mechanisms 9 to move horizontally and reciprocally along the hoisting track 5 at the same time to complete the closing and opening actions. There are two side support mechanisms, symmetrically installed on the outer sides of the two long frame sides of the hoisting frame 4. The side support mechanism includes a swing rod 6 and a swing cylinder 7. A swing rod seat 402 is provided on the outer side of the long frame side of the hoisting frame 4. The rod body 601 of the swing rod 6 is hinged to the swing rod seat 402. A swing cylinder fixing seat 403 is symmetrically provided on the outer side of the short frame side at the end where the hanging seat 401 is located. The two swing cylinders 7 are respectively fixed on the two swing cylinder fixing seats 403. The top end of the telescopic rod of the swing cylinder 7 is hinged to the rod end of the swing rod 6. The top of the swing rod 601 is equipped with a side support head 602. The telescopic rod of the swing cylinder 7 can retract with the movement of the bag opening cylinder 8, pulling the swing rod 6 so that the side support head 602 opens the bag opening laterally, and together with the bag clamping mechanism, opens the bag opening of the open bag 1 into a hexagonal shape.

[0027] Two bag-opening cylinder positioning seats 404 are symmetrically arranged below the two short frame sides of the lifting frame 4 about the center of the lifting frame 4, and each bag-opening cylinder positioning seat 404 is equipped with a bag-opening cylinder 8. In this way, the two bag-opening cylinders 8 can extend the telescopic rod into the lower part of the clamping plate drive seat. The telescopic movement does not affect the space inside the lifting frame 4, reducing the longitudinal dimension of the entire device. Moreover, the central symmetry design can realize symmetrical movement on both sides of the bag clamping structure 9, which facilitates the closing and opening of the two bag clamping plates 905.

[0028] The bag clamping mechanism 9 includes a bag clamping plate 905, a bag clamping drive seat 901, a clamping cylinder 903, a crank push plate 904, and a bag clamping strip 906. The bag clamping drive seat 901 has a crossbeam 908 at each end, and each crossbeam 908 has a track clamping wheel pair 909 mounted on its two ends. The bottom of the bag clamping drive seat 901 has a hinged seat connected to the telescopic rod end of the bag opening cylinder 8. A T-shaped positioning block 907 is fixedly mounted on the top of the bag clamping drive seat 901. The bag clamping plate 905 is fixed to the T-shaped positioning block 907 and faces the bag clamping cylinder. The lifting frame 4 extends downwards. One end of the crank push plate 904 is rotatably hinged to the clamping plate drive seat 901, with the hinge position located behind the front crossbeam 908. The back of the other end is hinged to the telescopic rod of the clamp cylinder 903, and the bottom of the clamp cylinder 903 is also hinged to the clamping plate drive seat 901. The bag clamping strip 906 is installed on the front of the crank push plate 904. When the telescopic rod of the clamp cylinder 903 extends, it can push the crank push plate 904 forward, so that the bag clamping strip 906 just presses against the bag clamping plate 905. In this way, when the open bag 1 is put on the two bag clamping plates 905, the clamping cylinder 903 can press the bag clamping strip 906 against the bag clamping plate 905 through the crank push plate 904, clamping the edge of the open bag 1.

[0029] The bag clamping mechanism 9 is also equipped with a cover plate 902. This prevents material debris from falling onto the bag clamping mechanism 9 and affecting its flexibility when the loading mechanism 2 discharges material.

[0030] The surface of the bag clamping plate 905 has teeth at the point where it presses against the bag clamping strip 906. The bag clamping strip 906 is a rubber clamping strip. The rubber clamping strip is relatively soft and can cooperate with the toothed structure to hold the bag opening in place, effectively preventing the open bag 1 from falling out during the filling process.

[0031] The working principle of this utility model is as follows:

[0032] First, the entire thin open bag clamping device is moved to the underside of the feeding mechanism under the action of the moving hanger 3. Then, the upper arm of the packaging machine puts the open bag 1 onto the two clamping plates 905 in the closed state. At this time, the telescopic rods of the clamping cylinders 903 on the two clamping mechanisms 9 extend simultaneously, pushing the two clamping strips 906 onto the toothed surface of the clamping plate 905, clamping the bag opening of the open bag 1. Then, the two opening cylinders 8 retract simultaneously, and the two clamping plate drive seats 901 drive the two clamping plates 905 to move outward simultaneously, pulling the open bag 1 into a rectangle. Then, the telescopic rods of the two swing cylinders 7 retract, so that the two side support heads 602 laterally open the two sides of the bag opening, making the bag opening hexagonal. At this time, the feeding port of the feeding mechanism 2 can just extend into the bag opening to perform the feeding action.

[0033] The main structure of this embodiment is compact. The entire bag clamping mechanism 9 is installed on the lifting rail 5 on the lifting frame 4. The longitudinal space is small, which facilitates the overall movement. Moreover, when fully opened, the entire bag opening is hexagonal, which increases the pipe diameter of the feeding mechanism 2 that can be accommodated, and can significantly improve the feeding efficiency during packaging.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thin, open-pocket clamping device, characterized in that, The thin open-pocket clamping device includes: a movable frame, a lifting frame, a clamping mechanism, and a side support mechanism. The movable frame is equipped with a track-holding wheel assembly, which allows the entire thin open-pocket clamping device to move horizontally along a corresponding track. The lifting frame is rectangular in shape, with a mounting bracket at one end. The lifting frame is connected to the movable frame via the mounting bracket. A set of lifting tracks is installed in the middle of the lifting frame, with both ends of the tracks fixed to two short sides of the lifting frame. The tracks are parallel to the two long sides of the lifting frame, and the short sides of the tracks are oppositely mounted... Two bag-opening cylinders and two bag-clamping mechanisms are symmetrically installed on the hoisting rail. The telescopic rods of the two bag-opening cylinders are connected to the two bag-clamping mechanisms respectively. The two bag-opening cylinders can drive the two bag-clamping mechanisms to move horizontally and reciprocally along the hoisting rail simultaneously to complete the closing and opening actions. There are two side support mechanisms, symmetrically installed on the outer sides of the two long frame sides of the hoisting frame. Each side support mechanism includes a swing rod and a swing cylinder. The top of the swing rod is equipped with a side support head. The swing cylinder can drive the swing rod to swing with the movement of the bag-opening cylinder, laterally opening the bag mouth. Together with the bag-clamping mechanisms, it opens the bag mouth of the open bag into a hexagonal shape.

2. The thin open-pocket clamping device according to claim 1, characterized in that, Two bag-opening cylinder positioning seats are symmetrically arranged below the two short frame sides of the hoisting frame about the center of the hoisting frame, and one bag-opening cylinder is installed in each bag-opening cylinder positioning seat.

3. The thin open-pocket clamping device according to claim 1, characterized in that, The bag clamping mechanism includes a bag clamping plate, a clamping plate drive seat, a clamping cylinder, a crank push plate, and a bag clamping strip. The clamping plate drive seat has a crossbeam at each end, and each crossbeam has a track clamping wheel pair installed at both ends. The bottom of the clamping plate drive seat has a hinged seat connected to the end of the telescopic rod of the bag opening cylinder. A T-shaped positioning block is fixedly installed at the top of the clamping plate drive seat. The bag clamping plate is fixed to the T-shaped positioning block and extends downwards towards the lifting frame. One end of the crank push plate is rotatably hinged to the clamping plate drive seat, and the back of the other end is hinged to the telescopic rod of the clamping cylinder. The bottom of the clamping cylinder is also hinged to the clamping plate drive seat. The bag clamping strip is installed on the front of the crank push plate. When the telescopic rod of the clamping cylinder extends, it pushes the crank push plate forward, causing the bag clamping strip to press against the bag clamping plate.

4. The thin open-pocket clamping device according to claim 3, characterized in that, The bag clamping mechanism is also equipped with a cover plate.

5. The thin open-pocket clamping device according to claim 3, characterized in that, The surface of the bag clamping plate is provided with teeth at the position where it is pressed against the bag clamping strip.

6. The thin open-pocket clamping device according to claim 3, characterized in that, The bag clamping strip is a rubber clamping strip.

7. The thin open-pocket clamping device according to claim 1, characterized in that, The long frame of the hoisting frame is provided with a swing rod seat on the outer side. The swing rod is hinged to the swing rod seat. The short frame at the end where the hanging seat is located is symmetrically provided with swing cylinder fixing seats. The swing cylinder is fixed on the swing cylinder fixing seat. The top end of the telescopic rod of the swing cylinder is hinged to the end of the swing rod.

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