Lifting mechanism

Abstract

The utility model discloses a lifting mechanism which comprises a base, a lifting cross beam, an end side lifting driving device and a plug plate assembly. The base is provided with a supporting face, the lifting cross beam is arranged on the base in a lifting mode, the lifting cross beam is located above the supporting face, and connecting parts are arranged at the two ends of the lifting cross beam in the length direction respectively. The end side lifting driving device is arranged on the base and connected with the connecting parts, and the end side lifting driving device is used for driving the two connecting parts to ascend and descend so as to drive the lifting cross beam to ascend and descend. The plug plate assembly is arranged on the base and comprises a plug plate and a plug plate driving device, the plug plate can enter the lower side of the part, between the two connecting parts, of the lifting cross beam, the lifting cross beam can be supported on the supporting face through the plug plate, and the plug plate driving device is connected with the plug plate; the plug plate driving device is used for driving the plug plate to enter between the lifting cross beam and the supporting face or retreat from the lifting cross beam. According to the lifting mechanism, the situation that the lifting cross beam is excessively bent due to stress can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the structure of bag making equipment, in particular to a lifting mechanism. Background Art

[0002] In the existing bag making equipment, in the device for welding zippers, a lifting mechanism is required to lift the welding knife box. Figure 1 When the main shaft 1 rotates, it drives the eccentric sleeve 2 to move, and the eccentric sleeve 2 drives the T-beam 3 to move up and down, and the T-beam 3 drives the crossbeam 4 to move up and down, and the crossbeam 4 drives the knife box to move up and down. In the above lifting mechanism, the crossbeam 4 is in a suspended state when it is raised. Due to the force applied by the knife box, the crossbeam 4 is easy to bend and deform, affecting the accuracy of the mechanism. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a lifting mechanism that can effectively prevent the lifting beam from being excessively bent due to force.

[0004] A lifting mechanism according to an embodiment of the utility model includes: a base, which is provided with a supporting surface; a lifting beam, which is liftably arranged on the base, the lifting beam is located above the supporting surface, and connecting parts are respectively arranged at both ends of the lifting beam in the length direction; an end side lifting drive device, which is arranged on the base and connected to the connecting part, and the end side lifting drive device is used to drive the two connecting parts to move up and down to drive the lifting beam to move up and down; a plug plate assembly, which is arranged on the base, the plug plate assembly includes a plug plate and a plug plate driving device, the plug plate can enter the lower side of the part of the lifting beam between the two connecting parts, and the lifting beam can be supported on the supporting surface through the plug plate, the plug plate driving device is connected to the plug plate, and the plug plate driving device is used to drive the plug plate to enter between the lifting beam and the supporting surface or withdraw from it.

[0005] A lifting mechanism according to an embodiment of the utility model has at least the following beneficial effects: the above-mentioned lifting mechanism can lift the positions of the two ends of the lifting beam through the end side lifting drive device, so that the lifting beam rises; after the lifting beam is lifted, the plug plate can be driven by the plug plate drive device to enter between the lifting beam and the supporting surface of the base, so that the part of the lifting beam between the two ends is supported on the supporting surface of the base through the plug plate, thereby effectively avoiding deformation and bending of the lifting beam, so that the mechanism has good working accuracy and working life.

[0006] According to some embodiments of the utility model, the end side lifting drive device includes two up and down drivers, the connecting part is a guide column arranged up and down, the base is provided with sliding connection holes corresponding to the connecting part one by one, the connecting part is slidably arranged in the sliding connection hole, the up and down drivers are connected to the base, the up and down drivers are connected to the connecting part one by one and are used to drive the corresponding connecting part to move up and down.

[0007] According to some embodiments of the utility model, the base is connected to a support block, the upper end surface of the support block is flush with the support surface and butted against each other, and the plug plate overlaps the upper end surface of the support block and slides with the upper end surface of the support block and the support surface.

[0008] According to some embodiments of the present invention, an introduction slope is provided at the upper end of the plug plate on one side close to the lifting beam, and the introduction slope is further downward at the end close to the lifting beam.

[0009] According to some embodiments of the present invention, the stopper plate is a strip plate extending along the length direction of the lifting beam, the length direction of the lifting beam is defined as the left-right direction, and the stopper plate is configured to move along the front-back direction.

[0010] According to some embodiments of the utility model, the plug plate driving device includes a connecting plate, a connecting rod and a front and rear drive, the plug plate is connected to the connecting plate, the connecting plate is movably arranged on the base and can move forward and backward, the front and rear drives are connected to the base, the front and rear drives are provided with a driving part that can reciprocate in the forward and backward directions, one end of the connecting rod is hinged to the connecting plate and the other end is connected to the driving part of the front and rear drives.

[0011] According to some embodiments of the present invention, the connecting rod and the front and rear drivers are provided in two groups and are respectively provided corresponding to the left and right parts of the connecting plate.

[0012] According to some embodiments of the utility model, the lifting mechanism is used for a bag making machine, and the base, the lifting beam, the end side lifting drive device, and the plug plate assembly are arranged in two groups in parallel with a front-to-back interval, and the two lifting beams are respectively used to support the front and rear ends of the knife box of the bag making machine.

[0013] According to some embodiments of the utility model, the lifting mechanism is used for a bag making machine, and the base, the lifting beam, the end side lifting drive device, and the plug plate assembly are arranged in two groups in parallel with a front-to-back interval, and the two lifting beams are respectively used to support the front and rear ends of the knife box of the bag making machine; the lifting mechanism also includes a zipper bracket assembly, which is connected to the base, and the zipper bracket assembly is provided with a membrane supporting structure. After the lifting beam is lowered, the knife box supported by it can be lowered to a position lower than the membrane supporting structure.

[0014] According to some embodiments of the utility model, the lifting mechanism is used for a bag making machine, and the base, the lifting beam, the end side lifting drive device, and the plug plate assembly are arranged in two groups in parallel with a front-to-back interval, and the two lifting beams are respectively used to support the front and rear ends of the knife box of the bag making machine; the lifting mechanism also includes a zipper bracket assembly, which is connected to the lifting beam, and the zipper bracket assembly is provided with a membrane supporting structure.

[0015] According to some embodiments of the present invention, the membrane supporting structure includes a zipper plate and a zipper introduction structure.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a three-dimensional schematic diagram of an existing lifting mechanism;

[0019] Figure 2 It is a lifting mechanism of an embodiment of the utility model;

[0020] Figure 3 for Figure 2 An exploded schematic diagram of the structure shown;

[0021] Figure 4 It is a three-dimensional schematic diagram of the plug plate of the embodiment of the utility model when entering between the lifting beam and the supporting surface of the base;

[0022] Figure 5 for Figure 2 A cross-sectional view of the structure shown in the KK direction;

[0023] Figure 6 A three-dimensional schematic diagram of the lifting mechanism of the embodiment of the utility model from another angle;

[0024] Figure 7It is a three-dimensional schematic diagram of the lifting mechanism of the embodiment of the utility model after adding a zipper bracket assembly.

[0025] Reference numerals:

[0026] Main shaft 1, eccentric sleeve 2, T-beam 3, crossbeam 4;

[0027] Base 100, support surface 110, sliding connection hole 120;

[0028] Lifting beam 200, connecting portion 210;

[0029] End side lifting drive device 300, up and down drive 310;

[0030] The plug plate assembly 400, the plug plate 410, the plug plate driving device 420, the introduction slope 411, the connecting plate 421, the connecting rod 422, and the front and rear drivers 423;

[0031] Support block 500;

[0032] Zipper bracket assembly 600 , zipper plate 610 , zipper guide structure 620 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Figure 1 For existing lifting mechanism. Figures 2 to 7 A lifting mechanism includes: a base 100, a lifting beam 200, an end-side lifting drive device 300, and a plug plate assembly 400. The base 100 is provided with a support surface 110, and the lifting beam 200 is escalably arranged on the base 100. The lifting beam 200 is located above the support surface 110, and the two ends of the lifting beam 200 in the length direction are respectively provided with connecting parts 210; in the embodiment shown in the drawings, the length direction of the lifting beam 200 is the left-right direction. The end-side lifting drive device 300 is arranged on the base 100 and connected to the connecting part 210, and the end-side lifting drive device 300 is used to drive the two connecting parts 210 to rise and fall so as to drive the lifting beam 200 to rise and fall. The plug plate assembly 400 is arranged on the base 100, and the plug plate assembly 400 includes a plug plate 410 and a plug plate driving device 420. The plug plate 410 can enter the lower side of the part of the lifting beam 200 between the two connecting parts 210, and the lifting beam 200 can be supported on the supporting surface 110 through the plug plate 410. The plug plate driving device 420 is connected to the plug plate 410, and the plug plate driving device 420 is used to drive the plug plate 410 to enter between the lifting beam 200 and the supporting surface 110 or withdraw therefrom.

[0038] The above-mentioned lifting mechanism can lift the positions of the two ends of the lifting beam 200 through the end side lifting drive device 300, so that the lifting beam 200 rises. After the lifting beam 200 is lifted, the plug plate 410 can be driven by the plug plate drive device 420 to enter between the lifting beam 200 and the supporting surface 110 of the base 100, so that the part of the lifting beam 200 between the two ends is supported on the supporting surface 110 of the base 100 through the plug plate 410, thereby effectively avoiding deformation and bending of the lifting beam 200, so that the mechanism has good working accuracy and service life.

[0039] In the embodiment, the end side lifting drive device 300 includes two up and down drivers 310, the connecting part 210 is a guide column arranged up and down, the base 100 is provided with a sliding connection hole 120 corresponding to the connecting part 210, the connecting part 210 is slidably arranged in the sliding connection hole 120, the up and down drivers 310 are connected to the base 100, and the up and down drivers 310 are connected to the connecting part 210 in a one-to-one correspondence and are used to drive the corresponding connecting part 210 to move up and down. With the above structure, compared with the lifting structure in the background technology, the structure is simpler and the installation difficulty can be effectively reduced.

[0040] In the embodiment, the up-down drive 310 is a cylinder, and the piston rod of the cylinder is connected to the corresponding connecting portion 210. Of course, it is conceivable that the up-down drive 310 is not limited to the use of a cylinder, for example, it can also be an electric push rod, etc. It is understandable that in some embodiments, the end-side lifting drive device 300 is not limited to the above-mentioned implementation, for example, a single cylinder can be used and the lifting beam 200 can be lifted by connecting the two ends of the lifting beam 200.

[0041] In the embodiment, the base 100 is connected to the support block 500, the upper end surface of the support block 500 and the support surface 110 are flush and butted against each other, and the plug plate 410 overlaps the upper end surface of the support block 500 and slides with the upper end surface of the support block 500 and the support surface 110. The support block 500 can support the plug plate 410, and the upper end surface of the support block 500 and the support surface 110 of the base 100 are butted against and flush with each other, so that the plug plate 410 can smoothly enter the support surface 110.

[0042] In the embodiment, the upper end of the plug plate 410 close to the lifting beam 200 is provided with an introduction slope 411, and the introduction slope 411 is further downward at the end close to the lifting beam 200. With the above structure, when the lifting beam 200 is slightly lowered, the plug plate 410 can still be squeezed into the lower side of the lifting beam 200 through the introduction slope 411; further, with the setting of the support block 500, the plug plate 410 can smoothly enter between the lifting beam 200 and the support surface 110 of the base 100.

[0043] In the embodiment, the plug plate 410 is a strip plate extending along the length direction of the lifting beam 200, and the plug plate 410 is configured to move in the front-rear direction. With the above structure, the strip plate-shaped plug plate 410 can evenly support the lifting beam 200, and the plug plate 410 is configured to move back and forth (in the direction perpendicular to the length of the lifting beam 200), so that it can be quickly put in place and withdrawn.

[0044] In the embodiment, the plug plate driving device 420 includes a connecting plate 421, a connecting rod 422 and a front and rear driver 423. The plug plate 410 is connected to the connecting plate 421, and the connecting plate 421 is movably arranged on the base 100 and can move forward and backward. The front and rear drivers 423 are connected to the base 100. The front and rear drivers 423 are provided with a driving part that can reciprocate in the front and rear directions. One end of the connecting rod 422 is hinged to the connecting plate 421 and the other end is connected to the driving part of the front and rear drivers 423. The above-mentioned plug plate driving device 420 has a simple structure and is easy to implement. The front and rear drivers 423 can specifically adopt a cylinder, and its driving part is the piston rod of the cylinder; of course, it is conceivable that the front and rear drivers 423 are not limited to using a cylinder, for example, an electric push rod can be used.

[0045] In the embodiment, the connecting plate 421 can be connected to the base 100 through a linear guide assembly, and the linear guide assembly is arranged along the front-to-back direction, so that the connecting plate 421 can move forward and backward. Of course, the connecting plate 421 can also be specifically connected to the base 100 through a guide rod and a sliding sleeve; it can be understood that in the art, there are many implementation methods for realizing a movable connection in which a component can move relative to another component in a predetermined direction, and those skilled in the art can configure it according to actual conditions.

[0046] In an embodiment, two groups of connecting rods 422 and front and rear drivers 423 are provided and are respectively provided corresponding to the left and right parts of the connecting plate 421, so that the connecting plate 421 can be driven to move in a balanced manner.

[0047] It is conceivable that the plug plate driving device 420 is not limited to the above-mentioned structure. For example, it can also be driven by a motor in conjunction with a gear rack, etc. Those skilled in the art can make specific configurations based on actual conditions.

[0048] In the embodiment, the lifting mechanism is used for a bag making machine, and the base 100, the lifting beam 200, the end lifting drive device 300, and the plug plate assembly 400 are arranged in two groups in parallel with a front-to-back interval, and the two lifting beams 200 are respectively used to support the front and rear ends of the knife box of the bag making machine.

[0049] In the embodiment, the lifting mechanism further includes a zipper bracket assembly 600, which is connected to the base 100. The zipper bracket assembly 600 is provided with a film supporting structure. After the lifting beam 200 is lowered, the knife box supported by it can be lowered to a position lower than the film supporting structure, thereby preventing the main mold entering the bag making machine from falling and contacting the knife box and scalding the film material. In the embodiment, the film supporting structure includes a zipper plate 610 and a zipper introduction structure 620.

[0050] It is conceivable that in other embodiments, the zipper bracket assembly 600 may also be directly connected to the lifting beam 200, and support the main film through the film supporting structure thereon to prevent the knife box from scalding the film material.

[0051] When the lifting mechanism is applied to the bag-making machine, it can effectively solve the problem of high temperature of the hot knife caused by abnormal and normal shutdown during the bag-making process, and the film and zipper are stretched and deformed due to temperature and finally produce waste products, which greatly reduces the amount of waste products and the difficulty of machine adjustment, and reduces the labor intensity of workers. The zipper guide structure is stable and the product stability is high.

[0052] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A lifting mechanism, characterized in that: include: A base (100) is provided with a supporting surface (110); A lifting beam (200) is liftably disposed on the base (100), the lifting beam (200) is located above the supporting surface (110), and connecting parts (210) are respectively disposed at both ends of the lifting beam (200) in the length direction; An end-side lifting drive device (300) is arranged on the base (100) and connected to the connecting portion (210), and the end-side lifting drive device (300) is used to drive the two connecting portions (210) to move up and down so as to drive the lifting beam (200) to move up and down; A plug plate assembly (400) is arranged on the base (100), and the plug plate assembly (400) includes a plug plate (410) and a plug plate driving device (420). The plug plate (410) can enter the lower side of the lifting beam (200) between the two connecting parts (210), and the lifting beam (200) can be supported on the supporting surface (110) through the plug plate (410). The plug plate driving device (420) is connected to the plug plate (410), and the plug plate driving device (420) is used to drive the plug plate (410) to enter between the lifting beam (200) and the supporting surface (110) or to withdraw from them.

2. The lifting mechanism according to claim 1, characterized in that: The end-side lifting drive device (300) includes two up-and-down drivers (310), the connecting part (210) is a guide column arranged up and down, the base (100) is provided with a sliding connection hole (120) corresponding to the connecting part (210), the connecting part (210) is slidably arranged in the sliding connection hole (120), the up-and-down drivers (310) are connected to the base (100), the up-and-down drivers (310) are connected to the connecting part (210) in a one-to-one correspondence and are used to drive the corresponding connecting part (210) to move up and down.

3. The lifting mechanism according to claim 1, characterized in that: The base (100) is connected to a support block (500), the upper end surface of the support block (500) and the support surface (110) are flush and butted against each other, and the plug plate (410) overlaps the upper end surface of the support block (500) and slidably cooperates with the upper end surface of the support block (500) and the support surface (110).

4. The lifting mechanism according to claim 3, characterized in that: An introduction slope (411) is provided at the upper end of the plug plate (410) on the side close to the lifting beam (200), and the introduction slope (411) is located further down at the end close to the lifting beam (200).

5. The lifting mechanism according to claim 1 or 3, characterized in that: The blocking plate (410) is a strip plate extending along the length direction of the lifting beam (200), the length direction of the lifting beam (200) being defined as the left-right direction, and the blocking plate (410) is configured to move along the front-back direction.

6. The lifting mechanism according to claim 5, characterized in that: The plug plate driving device (420) includes a connecting plate (421), a connecting rod (422) and a front and rear drive (423); the plug plate (410) is connected to the connecting plate (421); the connecting plate (421) is movably arranged on the base (100) and can move forward and backward; the front and rear drive (423) is connected to the base (100); the front and rear drive (423) is provided with a drive unit that can reciprocate in the front and rear directions; one end of the connecting rod (422) is hinged to the connecting plate (421) and the other end is connected to the drive unit of the front and rear drive (423).

7. The lifting mechanism according to claim 6, characterized in that: The connecting rod (422) and the front and rear drivers (423) are provided in two groups and are respectively provided corresponding to the left and right parts of the connecting plate (421).

8. The lifting mechanism according to claim 1, characterized in that: The lifting mechanism is used for a bag making machine, wherein the base (100), the lifting beam (200), the end lifting drive device (300), and the plug plate assembly (400) are arranged in two groups in parallel with a front-to-back interval, and the two lifting beams (200) are respectively used to support the front and rear ends of the knife box of the bag making machine; the lifting mechanism also includes a zipper bracket assembly (600), the zipper bracket assembly (600) is connected to the base (100), and the zipper bracket assembly (600) is provided with a membrane supporting structure. After the lifting beam (200) is lowered, the knife box supported by it can be lowered to a position lower than the membrane supporting structure.

9. The lifting mechanism according to claim 1, characterized in that: The lifting mechanism is used for a bag making machine, wherein the base (100), the lifting beam (200), the end lifting drive device (300), and the plug plate assembly (400) are arranged in two groups in parallel with a front-to-back interval, and the two lifting beams (200) are respectively used to support the front and rear ends of the knife box of the bag making machine; the lifting mechanism also includes a zipper bracket assembly (600), the zipper bracket assembly (600) is connected to the lifting beam (200), and the zipper bracket assembly (600) is provided with a membrane supporting structure.

10. The lifting mechanism according to claim 8 or 9, characterized in that: The membrane supporting structure includes a zipper plate (610) and a zipper introduction structure (620).

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