Gantry scissors with blades convenient to replace

Abstract

The utility model discloses a pair of gantry shears with blades convenient to replace, and relates to the technical field of mechanical equipment. The gantry shear with the blades convenient to replace comprises a main machine frame, a hydraulic system, a lower cutter set and an upper cutter set, the lower cutter set comprises a lower cutter holder and a lower blade, the lower cutter holder is welded to the main machine frame, a lower cutter groove matched with the lower blade is formed in the lower cutter holder, and the lower cutter groove is fixedly connected with the lower blade through a screw. In order to overcome the defect that the blades cannot be replaced or are inconvenient to disassemble when the gantry shears are used, the upper blade and the lower blade holder are connected in a clamping manner, the upper blade and the upper blade holder are connected in a clamping manner, and the upper blade holder and the upper blade arm are connected in a clamping manner, so that the upper blade and the lower blade can be conveniently and quickly disassembled, and the upper blade and the lower blade can be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a gantry shear with a blade that is convenient to replace. Background Art

[0002] Gantry shears are a kind of mechanical equipment commonly used in industrial production, mainly used for cutting and cutting metal materials, plastic materials, etc. In gantry shears, the blade is an important component and needs to be replaced regularly to ensure the cutting effect and mechanical performance. However, traditional gantry shears have the following defects:

[0003] The blade cannot be replaced or is not easy to disassemble. As the blade is used for a longer time, it will gradually wear and become blunt. After cutting the workpiece, the edge of the workpiece will be rough, burrs will be serious, or even broken. This will not only affect the quality of the workpiece, but also reduce production efficiency and increase production costs. When the blade becomes blunt, it is easy to cause safety hazards such as knife jamming and foreign matter flying during the cutting process.

[0004] Therefore, in order to solve the defect that the blade of the gantry shears cannot be replaced or is not convenient to disassemble during use, it is necessary to propose a gantry shears with easy replacement of the blade. Utility Model Content

[0005] The purpose of the utility model is to provide a gantry shears which is easy to replace blades. Through the snap-fit ​​connection between the lower blade and the lower blade seat, the upper blade and the upper blade seat, and the upper blade seat and the upper blade arm, the upper blade and the lower blade can be quickly disassembled and assembled to achieve replacement of the upper and lower blades, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gantry shear for convenient blade replacement comprises a main frame, a hydraulic system, a lower blade group and an upper blade group, wherein the lower blade group comprises a lower blade seat and a lower blade, the lower blade seat is welded to the main frame and has a lower blade groove adapted to the lower blade, and the lower blade groove is fixedly connected to the lower blade by screws;

[0008] The upper knife group includes an upper knife arm, an upper knife seat and an upper knife blade. The top end of the upper knife arm is fixedly connected to the output end of the hydraulic system. The upper knife arm is provided with a first card slot and a second card slot. A card block and a card plate are fixed on the upper knife seat. The upper knife seat is provided with an upper knife slot adapted to the upper knife blade.

[0009] Preferably, a notch is provided in the middle of the front end of the lower blade seat, and a groove is provided in the lower blade near the notch.

[0010] Preferably, the card block is in a card-engaging connection with the first card slot, and the card plate is in a card-engaging connection with the second card slot.

[0011] Preferably, the clamping plate is fixedly connected to the second clamping slot via stud bolts.

[0012] Preferably, the upper blade is fixedly connected to the upper blade seat by means of stud bolts.

[0013] Preferably, the front and back surfaces of the upper blade are symmetrically provided with limiting grooves, and a limiting block matched with the limiting groove is provided in the upper blade groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The gantry shears that are easy to replace blades can avoid using too many screws and studs to install the lower blade and the upper blade through the snap-fit ​​connection between the lower blade and the lower blade seat and the upper blade and the upper blade seat, so that the lower blade and the upper blade can be easily replaced;

[0016] 2. The gantry shears are easy to replace blades. Through the quick disassembly of the lower blade and the upper blade, the worn and blunt lower blade and the upper blade can be replaced in time to ensure the cutting quality, improve the quality and appearance requirements of the product, thereby reducing the cutting resistance and the load on the equipment, improving production efficiency and extending the service life of the machine. The sharp blades are not prone to safety hazards such as knife jamming and foreign matter splashing, thereby reducing the risk of operator injury and improving workplace safety. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the structure of the lower knife group of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the upper knife group of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the upper knife arm, the upper knife seat and the upper knife blade of the utility model;

[0021] Figure 5 It is a sectional plan view of the upper knife assembly of the utility model.

[0022] In the figure: 1, main frame; 2, hydraulic system; 3, lower knife group; 31, lower knife seat; 311, notch; 312, lower knife groove; 32, lower blade; 321, groove; 4, upper knife group; 41, upper knife arm; 411, first slot; 412, second slot; 42, upper knife seat; 421, block; 422, card plate; 423, upper knife groove; 424, limit block; 43, upper blade; 431, limit slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] To solve the technical problem of how to quickly disassemble and assemble the lower blade, please refer to Figure 1-Figure 2 , this embodiment provides the following technical solutions:

[0025] A gantry shear for easy blade replacement comprises a main frame 1, a hydraulic system 2, a lower blade group 3 and an upper blade group 4, wherein the lower blade group 3 comprises a lower blade seat 31 and a lower blade 32, the lower blade seat 31 is welded to the main frame 1 and is provided with a lower blade groove 312 adapted to the lower blade 32, the lower blade groove 312 is fixedly connected to the lower blade 32 by screws, a notch 311 is provided in the middle of the front end of the lower blade seat 31, and a draw groove 321 is provided at a position of the lower blade 32 near the notch 311.

[0026] Specifically, when the lower blade 32 needs to be replaced, the screws on the lower blade seat 31 are removed, and the lower blade 32 is pulled upward through the pull groove 321 until the lower blade 32 is pulled out of the lower blade groove 312, and then a new lower blade 32 is inserted into the lower blade groove 312, and finally the lower blade 32 is fixedly connected to the lower blade groove 312 by screws, so that the lower blade 32 can be quickly replaced.

[0027] To solve the technical problem of how to quickly disassemble and assemble the upper blade, please refer to Figure 3-Figure 5 , this embodiment provides the following technical solutions:

[0028] The upper knife group 4 includes an upper knife arm 41, an upper knife seat 42 and an upper knife blade 43. The top of the upper knife arm 41 is fixedly connected to the output end of the hydraulic system 2. A first card slot 411 and a second card slot 412 are provided in the upper knife arm 41. A card block 421 and a card plate 422 are fixed on the upper knife seat 42. The card block 421 is connected to the first card slot 411 in a card-engaging connection, and the card plate 422 is connected to the second card slot 412 in a card-engaging connection. The card plate 422 is fixedly connected to the second card slot 412 by stud bolts.

[0029] An upper knife groove 423 matched with the upper blade 43 is formed in the upper knife seat 42. The upper blade 43 is fixedly connected to the upper knife seat 42 by stud bolts. The upper blade 43 has limit grooves 431 symmetrically formed on the front and back surfaces. A limit block 424 matched with the limit groove 431 is provided in the upper knife groove 423.

[0030] Specifically, when the upper blade 43 needs to be replaced, the upper blade seat 42 is first disassembled from the upper blade arm 41: the stud bolts on the upper blade arm 41 are removed, and the upper blade seat 42 is pushed forward until the clamping block 421 is separated from the first clamping groove 411, and the clamping plate 422 is separated from the second clamping groove 412, so as to realize the disassembly of the upper blade seat 42;

[0031] Then remove the upper blade 43 from the upper blade seat 42: first remove the stud bolts on the upper blade seat 42, and push the upper blade 43 to the right until the upper blade 43 is separated from the upper blade groove 423, thereby realizing the removal of the upper blade 43, and then insert a new upper blade 43 into the upper blade groove 423, and fix the new upper blade 43 to the upper blade groove 423 with stud bolts, and finally move the upper blade seat 42 backward until the block 421 is inserted into the first slot 411, the card plate 422 is inserted into the second slot 412, and the card plate 422 is fixedly connected to the second slot 412 with stud bolts, thereby realizing the quick replacement of the upper blade 43.

[0032] Working principle: The gantry shears are easy to replace blades. When the lower blade 32 and the upper blade 43 become blunt after being used for a long time and need to be replaced, first remove the screws on the lower blade holder 31 and pull the lower blade 32 upward through the groove 321 until the lower blade 32 is pulled out of the lower knife groove 312, then install the new lower blade 32 and tighten it with the screws to replace the lower blade 32, then remove the stud bolts on the upper knife arm 41, and push the upper knife holder 42 forward until the clamping block 421 is separated from the first clamping groove 411, and the clamping plate 422 is separated from the second clamping groove 412, to disassemble the upper knife holder 42, then remove the stud bolts on the upper knife holder 42, and push the upper blade 43 to the right until the upper blade 43 is separated from the upper knife groove 423, and finally insert the new upper blade 43 into the upper knife groove 423, and after fastening it with the stud bolts, install the upper knife holder 42 on the upper knife arm 41 to replace the upper blade 43.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gantry shear for facilitating blade replacement, comprising a main frame (1), a hydraulic system (2), a lower blade group (3) and an upper blade group (4), characterized in that: The lower blade assembly (3) comprises a lower blade seat (31) and a lower blade (32); the lower blade seat (31) is welded to the main frame (1) and has a lower blade groove (312) adapted to the lower blade (32) formed therein; the lower blade groove (312) is fixedly connected to the lower blade (32) by means of screws; The upper knife assembly (4) comprises an upper knife arm (41), an upper knife seat (42) and an upper knife blade (43); the top end of the upper knife arm (41) is fixedly connected to the output end of the hydraulic system (2); a first clamping groove (411) and a second clamping groove (412) are provided in the upper knife arm (41); a clamping block (421) and a clamping plate (422) are fixed on the upper knife seat (42); and an upper knife groove (423) adapted to the upper knife blade (43) is provided in the upper knife seat (42).

2. A gantry shears for easy blade replacement according to claim 1, characterized in that: A notch (311) is provided in the middle of the front end of the lower blade seat (31), and a groove (321) is provided in a portion of the lower blade (32) close to the notch (311).

3. The gantry shears for easy blade replacement according to claim 1, characterized in that: The clamping block (421) and the first clamping slot (411) form a clamping connection, and the clamping plate (422) and the second clamping slot (412) form a clamping connection.

4. The gantry shears for easy blade replacement according to claim 3, characterized in that: The clamping plate (422) is fixedly connected to the second clamping slot (412) via stud bolts.

5. The gantry shears for easy blade replacement according to claim 1, characterized in that: The upper blade (43) is fixedly connected to the upper blade seat (42) via a stud bolt.

6. The gantry shears for easy blade replacement according to claim 5, characterized in that: The upper blade (43) has limit grooves (431) symmetrically formed on the front and back surfaces thereof, and a limit block (424) adapted to the limit groove (431) is provided in the upper blade groove (423).

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