A bag holding mechanism

Abstract

The utility model relates to a kind of package bag embrace and clamp mechanism, roof rack, as the support structure of entire device;A pair of main embrace oil cylinder, its cylinder body is fixed on the roof rack, and the piston rod output end of both is set along opposite direction;Two side embrace and clamp, respectively connect in the piston rod end of two main embrace oil cylinder, by the main embrace oil cylinder drive and mutually approach or away, to hold or release the left and right sides of package bag.The utility model overcomes the deficiency of prior art, and design is reasonable, compact structure, through main embrace oil cylinder drive side embrace and clamp realize left and right clamping, then combine side embrace oil cylinder drive side and block and realize front and back clamping, form four sides around package bag, greatly enhance the stability and reliability of clamping, effectively prevent package bag from occurring in the process of lifting and handling shake, tilt or slip, especially suitable for soft or easily deformed package bag.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a packaging bag clamping mechanism. Background Technology

[0002] In modern chemical, agricultural, warehousing and logistics industries, the transfer of bagged materials is a frequent and arduous task. Traditional manual handling methods are inefficient, labor-intensive and pose safety hazards. Therefore, various mechanized and automated handling equipment have emerged. Among them, clamping devices installed on overhead cranes, forklifts or special gantry cranes are widely used due to their high flexibility and adaptability.

[0003] Existing mechanical clamping devices typically use hydraulic cylinders or motors to drive the clamping arms, gripping and handling the packaging bag from both sides. However, in actual use, these devices can only achieve unidirectional clamping in the left-right direction. For soft packaging bags that are easily deformed and have an unstable center of gravity when fully loaded, the clamping force is insufficient and the point of action is singular. During lifting, moving, or turning, the packaging bag is very prone to swaying, tilting, or even slipping in the front-back or side-to-side direction, resulting in instability in the handling process and posing safety risks. Therefore, we propose a packaging bag clamping mechanism. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a packaging bag clamping mechanism to solve the problems of swaying, tilting, or even slippage that easily occur during the clamping, lifting, moving, and turning of packaging bags in existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a packaging bag clamping mechanism, comprising:

[0006] The top frame serves as the supporting structure for the entire device.

[0007] A pair of main hydraulic cylinders, the cylinder bodies of which are fixed on the top frame, and the piston rod output ends of the two cylinders are arranged in opposite directions;

[0008] Two side clamps are respectively connected to the piston rod ends of the two main clamping cylinders, and are driven by the main clamping cylinders to move closer or further apart to clamp or release the left and right sides of the packaging bag.

[0009] At least two pairs of clamping units are symmetrically arranged on the two side clamps. Each pair of clamping units includes a mounting base, a side clamping cylinder, and a side barrier. The mounting base is fixed to the side clamp. The middle part of the side barrier is hinged to the mounting base. The cylinder body of the side clamping cylinder is hinged to the mounting base, and its piston rod is hinged to one end of the side barrier. The side clamping cylinder drives the side barrier to rotate around its middle hinge point to assist in clamping or releasing the packaging bag from the front and back directions.

[0010] Further, at least one round pipe is provided on the side of the side enclosure that comes into contact with the packaging bag.

[0011] Further, the round pipes are connected end to end to form a "mouth"-shaped structure.

[0012] Further, a pair of guide rails are arranged at the bottom of the top frame, each of the guide rails is provided with a pair of guide grooves along its length direction, the side clamping jaw is provided with a pair of connecting plates facing the same direction, each of the connecting plates is provided with a sliding plate, and the two sliding plates are respectively inserted into the guide grooves of different guide rails.

[0013] Further, the cross section of the guide groove is a T-shaped structure.

[0014] Further, the system also includes a protective cover system, the protective cover system includes sealing plates arranged on both sides of the top frame for sealing the two side edges of the top frame, an outer organ shield is provided on the side of the sealing plate facing the top frame, a connecting cover is provided on the top of the side clamping jaw, one side of the connecting cover is connected to the side of the outer organ shield facing away from the sealing plate, and the other side is connected to an inner organ shield, and the outer organ shield, the connecting cover and the inner organ shield jointly seal the bottom of the top frame.

[0015] Further, both the outer organ shield and the inner organ shield are of telescopic structures, so that the outer organ shield, the connecting cover and the inner organ shield jointly form a bottom sealing structure that can be telescoped along with the movement of the side clamping jaw.

[0016] The embodiments of the utility model provide a packaging bag clamping mechanism, which has the following beneficial effects:

[0017] 1. The side clamping jaws are driven by the main clamping oil cylinder to realize left and right clamping, and then combined with the side clamping oil cylinder to drive the side enclosures to realize front and rear clamping, forming four-sided surrounding clamping of the packaging bag, which greatly enhances the stability and reliability of clamping, effectively prevents the packaging bag from shaking, tilting or slipping off during the lifting and handling process, and is especially suitable for soft or easily deformable packaging bags.

[0018] 2. The telescopic fully enclosed protective cover system jointly composed of the outer organ shield, the connecting cover and the inner organ shield can automatically expand and contract with the movement of the side clamping jaw, and always effectively seal the bottom and lateral openings of the top frame, which effectively isolates the intrusion of external dust, impurities and moisture, protects the internal core moving parts, reduces wear and failure rate, reduces equipment maintenance and cleaning costs, and can adapt to harsh industrial environments. Brief Description of the Drawings

[0019] Figure 1 is a schematic perspective view of the overall structure of the utility model;

[0020] Figure 2 is a schematic front view of the overall structure of the utility model;

[0021] Figure 3 This is a top view of the overall structure of this utility model;

[0022] Figure 4 This is a bottom-view perspective view of the top frame structure of this utility model;

[0023] Figure 5 This is a three-dimensional schematic diagram of the side clamp structure of this utility model;

[0024] Figure 6 This utility model Figure 1 Schematic diagram of structural cross-section.

[0025] In the diagram: 1. Top frame; 11. Guide rail; 12. Guide groove; 13. Sealing plate; 14. Outer accordion cover; 15. Inner accordion cover; 2. Main clamping cylinder; 3. Side clamp; 31. Connecting plate; 32. Slide plate; 33. Connecting cover; 4. Mounting base; 5. Side clamping cylinder; 6. Side enclosure; 7. Round pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] See attached document Figure 1-6 A packaging bag clamping mechanism includes a top frame 1, the top of which is connected to a truss as a support structure for the entire clamping device. A pair of main clamping cylinders 2 are provided on the top frame 1. The two main clamping cylinders 2 are fixed on the top frame 1, and their piston rods are arranged in opposite directions. The piston rod end of each main clamping cylinder 2 is connected to a side clamp 3. When the two main clamping cylinders 2 work at the same time, the two side clamps 3 can move closer to each other or move further away from each other, thereby achieving the clamping or releasing of the left and right sides of the packaging bag.

[0028] To further enhance the stability of clamping the packaging bag and prevent the packaging bag from shaking or slipping off in the front-rear direction, two sets of front-rear clamping units are further provided on each side clamping jaw 3. Specifically, a pair of mounting seats 4 are disposed on each side clamping jaw 3, and the two mounting seats 4 are preferably arranged symmetrically along the length direction of the side clamping jaw 3. Each mounting seat 4 is provided with a side clamping oil cylinder 5 and a side baffle 6. The middle part of the side baffle 6 is hinged to the mounting seat 4 via a pin shaft, so that it can rotate around the hinge point. One end of the side clamping oil cylinder 5 is hinged to the mounting seat 4 via a pin shaft, and the piston rod thereof is hinged to one end of the side baffle 6. When the piston rod of the side clamping oil cylinder 5 extends out, the side baffle 6 rotates around the hinge point at its middle part to press against the front side or the rear side of the packaging bag. Since two sets of such mechanisms are provided on each side clamping jaw 3, they can simultaneously perform clamping actions at the front and rear positions of the packaging bag respectively, so as to realize the restraint and clamping of the front and rear sides of the packaging bag. Combined with the left-right clamping action, a four-surface surrounding and clamping of the packaging bag is formed, which greatly improves the reliability and stability of clamping.

[0029] As a further optimization, a circular tube 7 is disposed on the side of the side baffle 6 away from the side clamping oil cylinder 5. Preferably, the circular tube 7 extends along the width direction of the side baffle 6, and more preferably, the circular tube 7 is connected end to end to form a "mouth"-shaped structure. The circular tube 7 serves as a direct contact member with the surface of the packaging bag when the side baffle 6 clamps the packaging bag, and its arc-shaped surface can reduce scratches on the surface of the packaging bag.

[0030] To ensure the stability and straightness of the side clamping jaw 3 during the horizontal movement, a pair of guide rails 11 are disposed at the bottom of the top frame 1. Each guide rail 11 is provided with guide grooves 12 in pairs along its length direction, and the guide grooves 12 are of a T-shaped structure. Correspondingly, the side clamping jaw 3 is provided with a pair of connecting plates 31 facing the same direction, and each connecting plate 31 is provided with a sliding plate 32. The two sliding plates 32 are respectively inserted into and slidably fitted in the guide grooves 12 of the two different guide rails 11. In this way, when the main clamping oil cylinder 2 drives the side clamping jaw 3 to move, the sliding of the sliding plates 32 in the guide grooves 12 provides precise guiding and support for the side clamping jaw 3.

[0031] To protect the internal moving parts from external dust and impurities, a protective cover system is provided at the bottom and sides of the entire device. When the top of the top frame 1 is connected to the truss, the truss can seal the opening at the top of the top frame 1. Both sides of the top frame 1 are provided with sealing plates 13 to close the openings on both sides of the top frame 1. An outer accordion cover 14 is provided on the side of the sealing plate 13 facing the top frame 1. The outer accordion cover 14 is a retractable protective cover. The top of the side clamp 3 is provided with a connecting cover 33. One side of the connecting cover 33 is connected to the side of the outer accordion cover 14 away from the sealing plate 13, and the other side is connected to the inner accordion cover 15. The inner accordion cover 15 is a retractable protective cover. The outer accordion cover 14, the connecting cover 33 and the inner accordion cover 15 together form a continuous and retractable protective cover layer, which can extend and retract with the movement of the side clamp 3, effectively covering the bottom opening area of ​​the top frame 1 at all times to prevent foreign objects from entering.

[0032] Working principle: Initially, the two main gripping cylinders 2 are in a retracted or partially extended state, the two side gripping clamps 3 are in the open position, the side gripping cylinders 5 are in a retracted state, and the side barriers 6 are open. When the packaging bag moves to the bottom of the gripping device, the entire gripping device is lowered so that the packaging bag is between the two side gripping clamps 3. Then, the two main gripping cylinders 2 move synchronously, driving the two side gripping clamps 3 to move towards the middle until the packaging bag is tightly gripped from both sides. The side gripping cylinders 5 on each side gripping clamp 3 move synchronously, causing the side barriers 6 to drive the round tube 7 to rotate, pressing the packaging bag from the front and rear sides. Together with the side gripping clamps 3, they complete the four-sided stable gripping of the packaging bag. Finally, the entire gripping device is lifted to transport the packaging bag.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A packaging bag clamping mechanism, characterized in that, comprising: a top frame (1), serving as the support structure of the entire device; a pair of main clamping oil cylinders (2), the cylinder bodies of which are fixed on the top frame (1), and the piston rod output ends of the two are arranged in opposite directions; two side clamping jaws (3), respectively connected to the piston rod ends of the two main clamping oil cylinders (2), and driven by the main clamping oil cylinders (2) to move toward or away from each other, so as to clamp or release the left and right sides of the packaging bag; at least two pairs of clamping units, symmetrically arranged on the two side clamping jaws (3), each pair of clamping units comprises a mounting seat (4), a side clamping oil cylinder (5) and a side baffle (6), the mounting seat (4) is fixed on the side clamping jaw (3), the middle part of the side baffle (6) is hinged to the mounting seat (4), the cylinder body of the side clamping oil cylinder (5) is hinged to the mounting seat (4), the piston rod thereof is hinged to one end of the side baffle (6), and the side clamping oil cylinder (5) drives the side baffle (6) to rotate around its middle hinge point, so as to perform auxiliary clamping or releasing from the front and rear direction of the packaging bag.

2. The packaging bag clamping mechanism as described in claim 1, characterized in that: At least one round pipe (7) is arranged on the side of the side baffle (6) that is used to contact the packaging bag.

3. The packaging bag clamping mechanism as described in claim 2, characterized in that: The round pipes (7) are connected end to end to form a "mouth"-shaped structure.

4. The packaging bag clamping mechanism as described in claim 1, characterized in that: A pair of guide rails (11) are arranged at the bottom of the top frame (1), each guide rail (11) is provided with guide grooves (12) in pairs along its length direction, a pair of connecting plates (31) facing the same direction are arranged on the side clamping jaw (3), a sliding plate (32) is arranged on each connecting plate (31), and the two sliding plates (32) are respectively inserted into the guide grooves (12) of different guide rails (11).

5. A packaging bag clamping mechanism as described in claim 4, characterized in that: The cross section of the guide groove (12) is of a T-shaped structure.

6. The packaging bag clamping mechanism as described in claim 1, characterized in that: The device further comprises a protective cover system, the protective cover system comprises sealing plates (13) arranged on both sides of the top frame (1) for sealing the two side edges of the top frame (1), an outer organ shield (14) is arranged on the side of the sealing plate (13) facing the top frame (1), a connecting cover (33) is arranged on the top of the side clamping jaw (3), one side of the connecting cover (33) is connected to the side of the outer organ shield (14) facing away from the sealing plate (13), the other side is connected to an inner organ shield (15), and the outer organ shield (14), the connecting cover (33) and the inner organ shield (15) jointly seal the bottom of the top frame (1).

7. A packaging bag clamping mechanism as described in claim 6, characterized in that: Both the outer organ shield (14) and the inner organ shield (15) are of telescopic structures, so that the outer organ shield (14), the connecting cover (33) and the inner organ shield (15) jointly form a bottom sealing structure that can be telescoped along with the movement of the side clamping jaw (3).

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