Shearing machine

Abstract

The utility model discloses a shearing machine which comprises a fixed cutter holder (5), a movable cutter holder (1), a machine frame (2) and a driving mechanism, the fixed cutter holder (5) is arranged in a sliding mode relative to the machine frame (2), the driving mechanism is used for driving the movable cutter holder (1) to do reciprocating motion relative to the fixed cutter holder (5), a first lining plate (3) is arranged on the movable cutter holder (1), a second lining plate (4) is arranged on the machine frame (2), and the first lining plate (3) and the second lining plate (4) are oppositely arranged. The first lining plate (3) and the second lining plate (4) are correspondingly arranged and form a sliding pair together; the hardness of the material of the first lining plate (3) is higher than that of the material of the second lining plate (4). According to the utility model, the abrasion of the lining plate is reduced, the time interval for replacing the lining plate is prolonged, the frequency of adjusting the gap between the movable cutter holder and the rack is reduced, and the economic benefit is improved.

Description

Technical Field

[0001] The utility model relates to a shearing machine and belongs to the technical field of scrap metal shearing. Background Art

[0002] Scrap shears are used to process scrap metals and are suitable for shearing scrap steel of various shapes, such as metal structural parts, automobile parts and other recycled scrap steel. The Chinese utility model patent with publication number CN214517826U discloses a scrap steel shearing device, which includes a moving knife assembly and a fixed knife assembly. The moving knife assembly reciprocates along the guide rail under the drive of the hydraulic cylinder and cooperates with the fixed knife assembly to shear the material. There is a guide rail between the moving knife seat and the frame. The moving knife seat slides along the rail, and the moving knife seat and the frame form a pair of sliding friction pairs. In the prior art, a soft lining plate is generally arranged on the moving knife seat, and a hard material lining plate is arranged on the frame as a guide rail. The two material lining plates are lubricated with grease during relative movement to form sliding friction.

[0003] The problems existing in the prior art are as follows: since there will be an unbalanced load when the movable knife seat is shearing materials, the movable knife seat will tilt to a certain extent when sliding up and down, resulting in a large contact pressure at the upper and lower ends of the lining of the movable knife seat, and the upper and lower ends of the lining of the movable knife seat continuously rub against the lining of the frame during the sliding process of the movable knife seat, so the soft lining at the upper and lower ends of the movable knife seat wears faster. When the wear reaches a certain extent (for example, more than 8mm), the lining of the movable knife seat must be replaced. If it is replaced frequently, the cost of using the shearing machine will be high. In addition, due to the rapid wear of the lining, the gap between the guide rail becomes larger, which affects the shearing effect. The gap between the movable knife seat and the frame needs to be adjusted frequently, causing inconvenience in use. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the utility model provides a shearing machine, which is beneficial to slowing down the wear of the liner and extending the time interval for replacing the liner. The specific technical solution is as follows.

[0005] A shearing machine, comprising a fixed blade seat, a movable blade seat, a frame and a driving mechanism, wherein the movable blade seat is slidably arranged relative to the frame, and the driving mechanism is used to drive the movable blade seat to reciprocate relative to the fixed blade seat, characterized in that: a first lining plate is arranged on the movable blade seat, a second lining plate is arranged on the frame, the first lining plate and the second lining plate are arranged correspondingly, and the two together form a sliding pair;

[0006] The material of the first lining plate is harder than that of the second lining plate.

[0007] Furthermore, the first lining plate and the second lining plate are both extended along the sliding direction.

[0008] Furthermore, the width of the first lining plate is greater than the width of the second lining plate.

[0009] Furthermore, the first lining plate is made of steel, and the second lining plate is made of copper plate or copper alloy plate.

[0010] Furthermore, each side in the width direction of the movable knife seat has two mounting side surfaces, the two mounting side surfaces are arranged in a V shape, and the first lining plate is arranged on each of the mounting side surfaces.

[0011] Compared with the prior art, the utility model helps to slow down the wear of the liner, prolongs the time interval for replacing the liner, reduces the number of times of adjusting the gap between the movable knife seat and the frame, and improves the economic benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of the shearing machine of the utility model;

[0013] Figure 2 It is a partial schematic diagram of the shearing machine of the utility model;

[0014] Figure 3 This is a schematic diagram of the force on the movable blade seat of the shearing machine of the utility model at a certain moment;

[0015] Figure 4 It is a schematic diagram of wear of the second lining plate of the shearing machine of the utility model.

[0016] In the figure: a movable knife seat 1, a frame 2, a first lining plate 3, a second lining plate 4, an upper end area 4.1, a lower end area 4.2, a middle area 4.3, and a fixed knife seat 5. DETAILED DESCRIPTION

[0017] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0018] See also Figure 1-Figure 4 A shearing machine comprises a fixed knife seat 5, a movable knife seat 1, a frame 2 and a driving mechanism (not shown in the figure), wherein the movable knife seat 1 and the fixed knife seat 5 are both provided with blades (not shown in the figure) that cooperate with each other, the movable knife seat 1 is slidably arranged relative to the frame 2, and the driving mechanism is used to drive the movable knife seat 1 to reciprocate relative to the fixed knife seat 5; wherein, a first lining plate 3 is arranged on the movable knife seat 1, and a second lining plate 4 is arranged on the frame 2, the first lining plate 3 and the second lining plate 4 are arranged correspondingly, and the two together form a sliding pair; wherein, the material of the first lining plate 3 is harder than that of the second lining plate 4.

[0019] The first lining plate 3 and the second lining plate 4 are both extended along the sliding direction, and the first lining plate 3 and the second lining plate 4 are substantially rectangular. Preferably, the first lining plate 3 is made of steel, and the second lining plate 4 is made of copper or copper alloy.

[0020] Preferably, if Figure 2 As shown, each side of the movable knife seat 1 in the width direction has two mounting side surfaces, the two mounting side surfaces are arranged in a V shape, and each mounting side surface is provided with a first lining plate 3. The movable knife seat 1 arranged in this way is limited and guided by four tracks (sliding pairs), and the force stability is better.

[0021] In order to prevent the first lining plate 3 from sinking into the groove after the second lining plate 4 is worn out, the width of the first lining plate 3 is set to be larger than the width of the second lining plate 4 (such as Figure 2 as shown).

[0022] The principle of the present utility model solution is as follows.

[0023] When the movable knife seat 1 is subjected to an eccentric load when shearing materials, the movable knife seat 1 will tilt to a certain extent, such as Figure 3 As shown, when the shear point is Figure 3 When the moving knife seat 1 is on the left side (the fixed knife seat 5 not shown is located below the moving knife seat 1, and the moving knife seat 1 shears the material when it moves downward), the upper right corner and the lower left corner of the moving knife seat 1 bear most of the pressure, resulting in a large local contact pressure generated during the sliding of the moving knife seat 1, and the first lining plate 3 on the moving knife seat 1 reciprocates with the moving knife seat 1. In the prior art, the lining plate on the moving knife seat 1 has a lower hardness and is more easily worn than the lining plate on the frame 2. When the moving knife seat 1 slides relative to the frame 2, the upper and lower ends of the lining plate on the moving knife seat 1 are continuously worn, and the wear parts are very concentrated (the upper and / or lower ends of the lining plate (easy-to-wear part) on the moving knife seat 1 continuously rub against the lining plate (continuously worn part) on the frame 2), so the upper and lower ends of the lining plate on the moving knife seat 1 wear quickly.

[0024] In the solution adopted by the utility model, the first lining plate 3 of the movable knife seat 1 has a higher hardness and is not easily worn, while the second lining plate 4 on the frame 2 has a relatively low hardness and is more easily worn. When the movable knife seat 1 is subjected to an offset load when shearing materials, the movable knife seat 1 will tilt to a certain extent, such as Figure 4As shown, in the process of the movable knife seat 1 sliding relative to the frame 2, the upper end area 4.1 and the lower end area 4.2 of the second lining plate 4 on the frame 2 are easily worn (when the shearing position is on the left side of the movable knife seat 1, the upper end area 4.1 mainly participates in the friction, and when the shearing position is on the right side of the movable knife seat 1, the lower end area 4.2 mainly participates in the friction), and the middle area 4.3 of the second lining plate 4 is less stressed and less worn. Compared with the prior art, the scheme of the utility model turns the first lining plate 3, which is not easy to wear, into an uninterrupted wear part (that is, the first lining plate 3 continuously participates in the friction), and turns the second lining plate 4 into an intermittent wear part (no area (point) of the second lining plate 4 continuously participates in the friction), so that the second lining plate 4 will not have a concentrated wear area, and the wear area is expanded compared with the prior art, and the wear is alleviated, the service life of the second lining plate 4 is increased, the cost is reduced, and the number of times the gap between the movable knife seat 1 and the frame 2 is adjusted is reduced, and the equipment is more reliable and easy to use.

[0025] The embodiments of the utility model are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other. The utility model is not limited to the above-mentioned specific implementation methods, which are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all belong to the protection scope of the utility model.

Claims

1. A shearing machine, comprising a fixed blade seat (5), a movable blade seat (1), a frame (2) and a driving mechanism, wherein the movable blade seat (1) is slidably arranged relative to the frame (2), and the driving mechanism is used to drive the movable blade seat (1) to reciprocate relative to the fixed blade seat (5), characterized in that: The movable knife seat (1) is provided with a first lining plate (3), and the frame (2) is provided with a second lining plate (4), the first lining plate (3) and the second lining plate (4) are arranged correspondingly, and the two together form a sliding pair; The material of the first lining plate (3) is harder than the material of the second lining plate (4).

2. A shearing machine according to claim 1, characterized in that: The first lining plate (3) and the second lining plate (4) are both extended along the sliding direction.

3. A shearing machine according to claim 1, characterized in that: The width of the first lining plate (3) is greater than the width of the second lining plate (4).

4. A shearing machine according to claim 1, characterized in that: The first lining plate (3) is made of steel, and the second lining plate (4) is made of copper plate or copper alloy plate.

5. A shearing machine according to claim 1, characterized in that: Each side of the movable knife seat (1) in the width direction has two mounting side surfaces, the two mounting side surfaces are arranged in a V shape, and the first lining plate (3) is arranged on each mounting side surface.

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