Air bag clamping device

Abstract

The utility model relates to an air bag clamping device which comprises a frame body, a discharging pipe, an outer ring body and an annular elastic air bag, the discharging pipe is vertically fixed on the frame body through a first installation frame, and the discharging pipe is composed of a cylindrical opening portion arranged on the upper portion and a discharging portion connected under the cylindrical opening portion in a communicating mode. The outer ring body is arranged outside the cylindrical distraction part in a sleeving mode, the outer ring body and the cylindrical distraction part are coaxially arranged, and the annular elastic air bag is fixed to the inner edge wall of the outer ring body and distributed around the cylindrical distraction part. According to the ton bag opening device, the annular elastic air bag is inflated and expanded to clamp the bag opening on the cylindrical opening part, and the annular elastic air bag is soft in texture and is in flexible contact with the bag opening, so that abrasion or damage caused by excessive extrusion to the bag opening is avoided, the service life of a ton bag is prolonged to a certain extent, and in addition, the safety of the ton bag is improved. The annular elastic air bag is an elastic piece, the friction force between the annular elastic air bag and the bag opening is large, the firmness of clamping the bag opening is improved, and two purposes are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bagged material feeding, in particular to an airbag bag clamping device. Background Art

[0002] Tonne bag feeding refers to a method of loading a large amount of materials into production equipment or storage areas using tonne bags. The materials in the tonne bags are put to the required places through lifting equipment, thereby improving production efficiency and reducing manual handling. Usually, a tonne bag has a bag body and a bag mouth, which are connected through a bag neck to guide the materials to the bag mouth for discharge. During the tonne bag feeding process, a bag clamping device is needed to clamp and fix the bag mouth and expand it to ensure the stability during discharging.

[0003] The traditional bag clamping device fixes and limits the bag mouth by sleeving the bag mouth on the inner ring member and then using multiple outer pressing members to press the bag mouth tightly on the inner ring member. However, both the inner ring member and the outer pressing members directly and rigidly squeeze the bag mouth, which is easy to wear and even damage the bag mouth over a long time, reducing the service life of the tonne bag. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a flexible clamping type airbag bag clamping device, which effectively solves the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions.

[0006] An airbag bag clamping device includes a frame body, a discharge pipe, an outer ring body and an annular elastic airbag. The discharge pipe is vertically fixed on the frame body through a first mounting rack. The discharge pipe consists of a cylindrical expanding part arranged above and a discharge part connected to the lower part of the cylindrical expanding part. The outer ring body is sleeved outside the cylindrical expanding part, and the outer ring body and the cylindrical expanding part are coaxially arranged. The annular elastic airbag is fixed on the inner edge wall of the outer ring body and distributed around the cylindrical expanding part. When inflated, the annular elastic airbag expands and extends towards the axis of the cylindrical expanding part to press the bag mouth of the tonne bag against the outer wall of the cylindrical expanding part.

[0007] It can be seen that the annular elastic airbag is inflated and expanded to clamp the bag mouth on the cylindrical expanding part. Since the annular elastic airbag is soft in texture and has a flexible contact with the bag mouth, it will not cause excessive extrusion and wear or damage to the bag mouth, and to a certain extent, it improves the service life of the tonne bag. In addition, the annular elastic airbag is an elastic member with a large frictional force with the bag mouth, which is beneficial to enhancing the firmness of clamping the bag mouth, killing two birds with one stone.

[0008] Further, when the annular elastic airbag is not inflated and expanded, there is a gap for accommodating the bag mouth between the inner edge wall of the annular elastic airbag and the outer wall of the cylindrical expanding part.

[0009] Furthermore, there are several anti-slip lines on the inner edge wall of the annular elastic airbag.

[0010] Furthermore, several anti-slip lines are arranged at intervals in the vertical direction, and each anti-slip line is annularly arranged around the cylindrical expansion part.

[0011] Furthermore, second mounting frames are respectively fixed on both sides of the discharge pipe on the frame body. Cylinders extending vertically upward are fixed above the two second mounting frames. Connecting arms are fixed at the ends of the telescopic rods of the two cylinders. The two connecting arms are respectively fixedly connected to both sides of the outer wall of the outer ring body.

[0012] Furthermore, a guide seat is fixed on one side above the cylindrical expansion part on the frame body. A guide groove is provided on the guide seat. A bidirectional threaded rod is rotatably installed in the guide groove. A driving motor is fixed on one side end of the guide seat. The output shaft of the driving motor is fixedly connected to one end of the bidirectional threaded rod. Two nut seats are symmetrically and limit-slidingly installed in the guide groove. The two nut seats are threadedly sleeved on both sides of the bidirectional threaded rod. Horizontal extending clamping rods are fixed on the sides of the two nut seats. When using this device, the two clamping rods are distributed on both sides of the neck of the ton bag.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows.

[0014] 1. The present utility model uses the annular elastic airbag to inflate and expand to clamp the bag mouth on the cylindrical expansion part. Since the annular elastic airbag is soft in texture and has a flexible contact with the bag mouth, it will not cause excessive extrusion and wear or damage to the bag mouth, which improves the service life of the ton bag to a certain extent. In addition, the annular elastic airbag is an elastic part and has a large frictional force with the bag mouth, which is beneficial to improving the clamping firmness of the bag mouth, killing two birds with one stone.

[0015] 2. The present utility model works through the synchronous elongation of the two cylinders. Their telescopic rods respectively push the two connecting arms to move upward, and then drive the outer ring body to move upward to the upper part of the cylindrical expansion part, which can vacate the space outside the cylindrical expansion part, facilitating the staff to operate to effectively put the bag mouth on the cylindrical expansion part, avoiding that the bag mouth cannot be completely put on the cylindrical expansion part due to the obstruction of the outer ring body, thereby improving the clamping stability of the bag mouth.

[0016] 3. The present utility model drives the bidirectional threaded rod to rotate through the operation of the driving motor. The two nut seats are driven by the bidirectional threaded rod to approach or move away from each other, and drive the two clamping rods to move synchronously, which can realize the clamping and release of the bag neck, and then can change the cross-sectional area inside the bag neck to realize the flow regulation of the discharged material. At the same time, when the two clamping rods approach each other to the limit position, the bag neck can be clamped and closed to stop discharging, which is convenient for controlling the start and stop and the flow rate of discharging. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a three-dimensional schematic diagram of a partial structure of the present utility model;

[0019] Figure 3 is a schematic cross-sectional view of a partial structure in the present utility model;

[0020] Figure 4 is an installation schematic diagram of two clamping rod structures in the present utility model.

[0021] In the figure: 1. Frame body; 11. First mounting frame; 12. Second mounting frame; 2. Discharge pipe; 21. Cylindrical expansion part; 22. Discharge part; 3. Outer ring body; 4. Annular elastic airbag; 41. Anti-slip pattern; 5. Cylinder; 51. Connecting arm; 6. Guide seat; 601. Guide groove; 61. Bidirectional threaded rod; 62. Driving motor; 63. Nut seat; 64. Clamping rod. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , a pneumatic bag clamping device provided by the present utility model includes a frame body 1, a discharge pipe 2, an outer ring body 3 and an annular elastic airbag 4. The discharge pipe 2 is vertically fixed on the frame body 1 through the first mounting frame 11. The discharge pipe 2 is composed of a cylindrical expansion part 21 arranged above and a discharge part 22 connected in communication directly below the cylindrical expansion part 21. The outer ring body 3 is sleeved outside the cylindrical expansion part 21, and the outer ring body 3 and the cylindrical expansion part 21 are coaxially arranged. The annular elastic airbag 4 is fixed on the inner edge wall of the outer ring body 3 and is distributed around the cylindrical expansion part 21. When inflated, the annular elastic airbag 4 expands and extends towards the axis of the cylindrical expansion part 21 for pressing the mouth of the ton bag against the outer wall of the cylindrical expansion part 21.

[0024] When using this device for bulk bag feeding, the opening of the bulk bag is sleeved on the cylindrical expanding part 21. Subsequently, the annular elastic airbag 4 is inflated. After inflation, the annular elastic airbag 4 expands and extends convergently towards the axis of the cylindrical expanding part 21, which can firmly press the bag opening against the outer wall of the cylindrical expanding part 21, realizing the clamping and fixing of the bulk bag opening. Since the annular elastic airbag 4 is soft in texture and has a flexible contact with the bag opening, it will not cause excessive extrusion and resulting wear or damage to the bag opening, improving the service life of the bulk bag to a certain extent. In addition, the annular elastic airbag 4 is an elastic component with a large frictional force with the bag opening, which is beneficial to enhancing the firmness of clamping the bag opening, achieving two goals with one action.

[0025] Specifically, when the annular elastic airbag 4 is not inflated and expanded, there is a gap for accommodating the bag opening between the inner edge wall of the annular elastic airbag 4 and the outer wall of the cylindrical expanding part 21. When the annular elastic airbag 4 is not inflated, its inner diameter is larger than the outer diameter of the cylindrical expanding part 21, thus forming a gap between the inner edge wall of the annular elastic airbag 4 and the outer wall of the cylindrical expanding part 21, facilitating the bag opening to be smoothly sleeved on the cylindrical expanding part 21.

[0026] Specifically, there are several anti-slip lines 41 on the inner edge wall of the annular elastic airbag 4. By setting the anti-slip lines 41 on the inner edge wall of the annular elastic airbag 4, the frictional force between the bag opening parts is further increased, and thus the firmness when the bag opening is clamped is further enhanced.

[0027] In addition, several anti-slip lines 41 are arranged at intervals in the vertical direction, and each anti-slip line 41 is arranged in a ring shape around the cylindrical expanding part 21. The anti-slip lines 41 are designed in a ring shape around the cylindrical expanding part 21, and multiple anti-slip lines 41 are vertically spaced apart, which can effectively increase the frictional force with the bag opening in the vertical direction, and thus ensure a good anti-detachment effect in the vertical direction.

[0028] Specifically, second mounting frames 12 are respectively fixed on both sides of the discharge pipe 2 on the frame body 1. Above the two second mounting frames 12, cylinders 5 extending vertically upward are fixed. Connecting arms 51 are fixed at the ends of the telescopic rods of the two cylinders 5. The two connecting arms 51 are respectively fixedly connected to both sides of the outer wall of the outer ring body 3. Before clamping the bag body, through the synchronous elongation of the two cylinders 5, their telescopic rods respectively push the two connecting arms 51 to move upward, thereby driving the outer ring body 3 to move upward to the upper part of the cylindrical expanding part 21, which can vacate the space around the cylindrical expanding part 21, facilitating the operator to effectively sleeve the bag opening on the cylindrical expanding part 21 and avoiding the bag opening being unable to be completely sleeved on the cylindrical expanding part 21 due to the blockage of the outer ring body 3, thereby enhancing the stability of clamping the bag opening.

[0029] Specifically, a guide seat 6 is fixed on one side of the frame body 1 above the cylindrical expansion part 21. A guide groove 601 is provided on the guide seat 6. A bidirectional threaded rod 61 is rotatably installed in the guide groove 601. A driving motor 62 is fixed on one side end of the guide seat 6. The output shaft of the driving motor 62 is fixedly connected to one end of the bidirectional threaded rod 61. Two nut seats 63 are symmetrically and limit-slidingly installed in the guide groove 601. The two nut seats 63 are threadedly sleeved on both sides of the bidirectional threaded rod 61. A horizontally extending clamping rod 64 is fixed on the side of each of the two nut seats 63. When using this device, the two clamping rods 64 are distributed on both sides of the neck of the ton bag. Before putting the bag mouth on the cylindrical expansion part 21, it is necessary to ensure that the bag neck vertically passes between the two clamping rods 64. When discharging materials, the driving motor 62 works to drive the bidirectional threaded rod 61 to rotate. The two nut seats 63 are threadedly driven by the bidirectional threaded rod 61 to approach or move away from each other, and drive the two clamping rods 64 to move synchronously, so as to realize the clamping and release of the bag neck, and further change the cross-sectional area inside the bag neck, realize the flow regulation of the discharged materials. At the same time, when the two clamping rods 64 approach each other to the limit position, the bag neck can be clamped and closed to stop discharging materials, thereby facilitating the control of the start and stop of discharging materials and the flow rate.

[0030] The above is a detailed description of the present invention in combination with specific embodiments. It cannot be determined that the specific implementation manners of the present invention are only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several equivalent substitutions or obvious modifications are made, and the performance or use is the same, and all should be regarded as belonging to the patent protection scope determined by the claims submitted by the present invention.

Claims

1. An air bag clamping device, characterized in that: It comprises a frame body (1), a discharge pipe (2), an outer ring body (3) and an annular elastic air bag (4); The discharge pipe (2) is vertically fixed on the frame (1) through a first mounting frame (11), and the discharge pipe (2) is composed of a cylindrical expansion portion (21) arranged at the top and a discharge portion (22) connected to and directly below the cylindrical expansion portion (21); The outer ring body (3) is sleeved on the outside of the cylindrical expansion portion (21), and the outer ring body (3) and the cylindrical expansion portion (21) are coaxially arranged; The annular elastic airbag (4) is fixed on the inner edge wall of the outer ring body (3) and is distributed around the cylindrical expansion portion (21); The annular elastic airbag (4) expands and extends toward the axis of the cylindrical expansion portion (21) when inflated, and is used to press the mouth of the ton bag against the outer wall of the cylindrical expansion portion (21).

2. The air bag clamping device according to claim 1, characterized in that: When the annular elastic airbag (4) is not inflated, a gap for accommodating the bag opening exists between the inner edge wall of the annular elastic airbag (4) and the outer wall of the cylindrical expansion portion (21).

3. The air bag clamping device according to claim 1, characterized in that: The inner edge wall of the annular elastic airbag (4) is provided with a plurality of anti-slip grooves (41).

4. The air bag clamping device according to claim 3, characterized in that: A plurality of the anti-slip grooves (41) are arranged at intervals along the vertical direction; Each of the anti-slip patterns (41) is arranged in a ring shape around the cylindrical expansion portion (21).

5. The air bag clamping device according to claim 1, characterized in that: Second mounting frames (12) are respectively fixed on the frame body (1) at both sides of the discharge pipe (2), and cylinders (5) extending vertically upward are fixed above the two second mounting frames (12); Connecting arms (51) are fixed to the ends of the telescopic rods of the two cylinders (5), and the two connecting arms (51) are respectively fixedly connected to the two sides of the outer wall of the outer ring body (3).

6. The air bag clamping device according to claim 1, characterized in that: A guide seat (6) is fixed on one side of the frame (1) above the cylindrical opening portion (21), and a guide groove (601) is provided on the guide seat (6); A bidirectional threaded rod (61) is rotatably mounted in the guide groove (601), a driving motor (62) is fixed on one side end of the guide seat (6), and an output shaft of the driving motor (62) is fixedly connected to one end of the bidirectional threaded rod (61); Two nut seats (63) are symmetrically and slidably mounted in the guide groove (601), and the two nut seats (63) are thread-matchedly mounted on both sides of the bidirectional threaded rod (61); A horizontally extending clamping rod (64) is fixed to the side portions of the two nut seats (63); When the device is used, the two clamping rods (64) are distributed on both sides of the neck of the ton bag.

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