Antiskid metal scissors

Abstract

The utility model discloses a pair of anti-slip metal scissors, which comprises scissors and a self-adaptive limiting device for limiting a workpiece on the scissors, the self-adaptive limiting device comprises a workpiece limiting component and a sliding component, the workpiece limiting component automatically adapts to the shape of the workpiece to be sheared and limits the workpiece to be sheared, and the sliding component is used for sliding the workpiece to be sheared. And the workpiece limiting assembly gradually shrinks into the mounting plate along with the shears shearing the workpiece. The self-adaptive limiting device has the advantages that the self-adaptive limiting device arranged on the scissors is used for self-adaptive limiting of a workpiece, the workpiece limiting assembly is in contact with the workpiece before the scissors during shearing, the workpiece is limited, the workpiece limiting assembly gradually shrinks during workpiece shearing, normal shearing of the scissors is not affected, the workpiece is limited in real time in the shearing process, the workpiece is prevented from sliding, and the shearing effect is guaranteed; according to the self-adaptive limiting device, the workpiece limiting assembly is detachably arranged in the sliding grooves in different shapes, so that the self-adaptive limiting device can be suitable for a crocodile type shearing machine and a gantry shearing machine, and the overall universality is improved.

Description

Technical Field

[0001] The utility model specifically relates to a pair of anti-skid metal scissors. Background Art

[0002] Metal shears are a type of mechanical equipment used to shear metal materials. They are mainly used for cold shearing of various shapes of steel and various metal materials. Their working principle is to drive the shearing tool (also called scissors, shearing knife) to move through a hydraulic system or an electric system to generate shearing force, thereby cutting the metal material. Metal shears are widely used in aviation, rail transportation, automobile manufacturing, construction engineering and other fields.

[0003] Metal shears are divided into many types according to their styles, including crocodile shears and gantry shears. The scissors used to cut metal are directly involved in the shearing process and occupy a vital position in the shearing machine. They are the core components of the shearing machine to realize the metal shearing function. The scissors determine the shearing quality, accuracy and overall performance of the shearing machine. In the existing shearing process, due to the sliding of the metal surface or the uneven distribution of the shearing force, the workpiece to be sheared often slides during the shearing process, which affects the shearing effect and may also cause damage to the shear knife, resulting in unnecessary losses. Therefore, a pair of scissors is needed that can prevent the workpiece to be sheared from sliding during the shearing process. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing scissors mentioned in the background technology have the problem that the workpiece to be sheared is easy to slide during the shearing process, affecting the shearing effect, and the sliding of the workpiece causes the scissors to be easily damaged.

[0005] In view of the above technical problems, a pair of anti-slip metal scissors is proposed; the anti-slip metal scissors are realized by the following technical scheme: a pair of anti-slip metal scissors, comprising a pair of scissors, which are detachably mounted on a shearing machine, and are characterized in that: they also include an adaptive limiting device arranged on the scissors to limit the workpiece to be sheared, the adaptive limiting device comprising a workpiece limiting component and a sliding component, the sliding component being arranged on the scissors and sliding back and forth relative to the shearing direction of the scissors, the workpiece limiting component being detachably mounted on a mounting plate in the sliding component, the workpiece limiting component automatically adapts to the shape of the workpiece to be sheared, and limits the workpiece to be sheared, and the workpiece limiting component gradually shrinks into the mounting plate as the scissors shear the workpiece.

[0006] In the utility model, an adaptive limiting device detachably arranged on the scissors is utilized to automatically adapt to the shape of the workpiece to be sheared and limit the workpiece to be sheared. During shearing, the workpiece limiting component in the adaptive limiting device contacts the workpiece before the scissors to limit the workpiece. When the scissors shear the workpiece, the workpiece limiting component gradually contracts without affecting the normal shearing of the scissors. At the same time, the workpiece is also limited in real time during the shearing process, effectively preventing the workpiece from sliding, ensuring the shearing effect, and avoiding the problem of damage to the scissors due to the sliding of the workpiece. In addition, the workpiece limiting component can be detachably arranged in slide grooves of different shapes on the mounting plate, so that the adaptive limiting device can be applied to crocodile shears and gantry shears, thereby improving the overall versatility.

[0007] Preferably, the workpiece limiting assembly includes limiting teeth, a slide plate, a roller and an adaptive compression spring. The slide plate is arranged in a limiting groove on the mounting plate. The adaptive compression spring is arranged in the limiting groove and contacts the slide plate. The roller is arranged on the slide plate and rolls along the limiting groove. The limiting teeth are arranged on the slide plate and move along the limiting groove with the roller. The limiting teeth cooperate with the adaptive compression spring to adapt to the shape of the workpiece to be sheared and limit the workpiece to be sheared. The setting of the workpiece limiting assembly enables the workpiece limiting assembly to automatically adapt to the shape of the workpiece to be sheared during the shearing process, limit the workpiece, effectively prevent the workpiece from sliding, and improve the shearing quality.

[0008] Preferably, the limit teeth are closer to the workpiece to be sheared relative to the shearing direction of the scissors, and the limit teeth contact the workpiece to be sheared before the scissors. This arrangement enables the limit teeth to limit the workpiece in real time during the shearing process to prevent the workpiece from sliding.

[0009] Preferably, an anti-sliding block is detachably provided at the end of the limiting tooth, and the anti-sliding block contacts the workpiece to be sheared. The provision of the anti-sliding block improves the anti-slip effect of the workpiece and prevents the workpiece from sliding.

[0010] Preferably, the sliding assembly includes a mounting plate having a mounting hole and a limiting slide groove, the mounting plate being arranged on the scissors through the mounting hole, the mounting plate sliding back and forth along the mounting hole relative to the shearing direction of the scissors, a first compression spring being arranged in the mounting hole, the stiffness coefficient of the first compression spring being greater than the stiffness coefficient of the adaptive compression spring in the limiting slide groove, such an arrangement enables the mounting plate to contract along the shearing direction only after the limiting teeth are fully contracted, thereby ensuring normal shearing of the scissors.

[0011] Preferably, the limiting groove comprises a first groove and a second groove. The first groove is rectangular and parallel to the mounting hole. The second groove is arc-shaped and concentric with the rotating axis of the scissors rotary cutting. The limiting teeth are detachably arranged on the slide plates in the first groove and the second groove. Such an arrangement improves the versatility of the device, so that it can be used for crocodile shears as well as gantry shears, thereby improving the overall versatility.

[0012] Preferably, at least two groups of mounting holes and limiting grooves are arranged on the mounting plate at intervals along the length direction of the mounting plate. Such an arrangement facilitates the installation of multiple groups of workpiece limiting components, improves the limiting ability for workpieces of different sizes, and ensures an anti-slip effect.

[0013] In the preferred embodiment of the technical solution of the utility model, an accordion protective cover is arranged outside the mounting hole and the limiting slide groove on the mounting plate. The accordion protective cover shrinks and contracts with the movement of the workpiece limiting assembly and the sliding assembly. The setting of the accordion protective cover prevents external dust from falling into the mounting hole and the limiting slide groove, thereby ensuring the normal and stable operation of the device.

[0014] In the preferred embodiment of the technical solution of the utility model, the workpiece limiting components correspond one-to-one with the limiting slide grooves on the mounting plate, and at least two groups are provided. Such a setting improves the limiting ability for workpieces of different sizes and ensures the anti-slip effect.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The technical solution of the utility model utilizes an adaptive limiting device detachably arranged on the scissors to automatically adapt to the shape of the workpiece to be sheared and limit the workpiece to be sheared. During shearing, the workpiece limiting component in the adaptive limiting device contacts the workpiece before the scissors to limit the workpiece. When the scissors shear the workpiece, the workpiece limiting component gradually contracts without affecting the normal shearing of the scissors. At the same time, the workpiece is also limited in real time during the shearing process, effectively preventing the workpiece from sliding, ensuring the shearing effect, and avoiding the problem of damage to the scissors due to the sliding of the workpiece. In addition, the workpiece limiting component can be detachably arranged in slide grooves of different shapes on the mounting plate, so that the adaptive limiting device can be applied to crocodile shears and gantry shears, thereby improving the overall versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of the utility model Figure 1 (Applicable to gantry shearing machine);

[0018] Figure 2 A three-dimensional diagram of the utility model Figure 2 (Applicable to alligator shears);

[0019] Figure 3 A three-dimensional diagram of the utility model Figure 3 (Excluding organ protective cover);

[0020] Figure 4 It is a three-dimensional schematic diagram of the workpiece restraint assembly;

[0021] Figure 5 It is a three-dimensional schematic diagram of a sliding component;

[0022] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0023] Figure 7 This is a schematic diagram of the workpiece limiting component after limiting;

[0024] Figure 8 It is a schematic diagram of the workpiece limiting assembly and the sliding assembly after contraction;

[0025] Fig. 9 This is an exploded view of the utility model;

[0026] Explanation of the accompanying drawings: 1-scissors, 2-adaptive limiting device, 3-workpiece limiting assembly, 31-limiting teeth, 32-slide plate, 33-anti-slide block, 34-fixing block, 35-roller, 36-adaptive compression spring, 4-sliding assembly, 41-mounting plate, 42-fixing ring, 43-mounting hole, 44-first slide groove, 45-second slide groove, 46-first compression spring, 47-slideway, 48-baffle bar, 5-pressure plate, 6-accordion protective cover. DETAILED DESCRIPTION

[0027] The following will be combined with the attached embodiment of the utility model Figure 1-9 , the technical solutions in the embodiments of the utility model are described in detail. Example

[0028] like Figure 1 , 2 As shown in and 3, a non-slip metal scissors includes a pair of scissors 1, an adaptive limiting device 2, a pressure plate 5 and an accordion protective cover 6. The scissors 1 are installed on a shearing machine, and the adaptive limiting device 2 is detachably installed on the scissors 1 using the pressure plate 5. The adaptive limiting device 2 automatically adapts to the shape of the workpiece to be sheared and limits the position of the workpiece to be sheared to prevent the workpiece from sliding during shearing. The accordion protective cover 6 is installed on the mounting plate 41 in the adaptive limiting device 2 to prevent dust and debris from entering the slide groove on the mounting plate 41.

[0029] The scissors 1, also known as shearing knives, are the core components of the shearing machine to achieve the metal shearing function. They are original equipment on the existing shearing machine. Their main function is to shear the workpiece material. Mounting holes are opened along the length direction on the existing scissors 1. The scissors 1 are fixed to the shearing machine with screws through the mounting holes.

[0030] In the adaptive limiting device 2, a mounting hole groove is also provided on the mounting plate 41 corresponding to the mounting hole on the scissors 1. The adaptive limiting device 2 can be connected to the scissors 1 by means of the mounting hole groove and screws. The pressure plate 5 is placed on the other side of the adaptive limiting device 2 to further limit the position of the adaptive limiting device 2 on the scissors 1.

[0031] Regarding the positional relationship among the scissors 1, the adaptive limiting device 2 and the pressure plate 5, the adaptive limiting device 2 is in the middle, the scissors 1 and the pressure plate 5 are located on both sides of the adaptive limiting device 2, and the adaptive limiting device 2 can reciprocate up and down relative to the shearing direction of the scissors 1.

[0032] Definition: In this embodiment, the cutting direction of the scissors 1 is a reference, the direction from the scissors 1 to the workpiece to be cut is the downward direction, and the opposite direction is the upward direction. The directions pointing upward and downward represent the width direction, and the direction in which the scissors 1 extend is the length direction.

[0033] like Figure 3 , 4 As shown in FIG. 5 , the adaptive limiting device 2 includes a workpiece limiting assembly 3 and a sliding assembly 4 . The workpiece limiting assembly 3 is mounted on a mounting plate 41 in the sliding assembly 4 , and the sliding assembly 4 is mounted on the scissors 1 .

[0034] The main function of the workpiece limiting component 3 is to automatically adapt to the shape of the workpiece to be sheared, limit the workpiece to be sheared, prevent the workpiece from sliding during shearing to affect the shearing quality, and also prevent the workpiece from sliding to damage the scissors 1.

[0035] The function of the sliding component 4 is, on the one hand, to serve as a carrier for installing the workpiece limiting component 3, and on the other hand, to drive the workpiece limiting component 3 to move gradually upward during the downward shearing process of the scissors 1, thereby ensuring real-time positioning of the workpiece without affecting the normal shearing process of the scissors 1.

[0036] like Figure 1 , 2 As shown in FIGS. 5 , 6 , 7 and 9 , the sliding assembly 4 includes a mounting plate 41 and a fixing ring 42 disposed in the mounting plate 41 .

[0037] The mounting plate 41 is a metal plate with a rectangular cross section. The width of the mounting plate 41 is slightly smaller than the width of the scissors 1 , that is, when the mounting plate 41 is fixed to the scissors 1 , the scissors 1 will contact the workpiece to be sheared before the mounting plate 41 .

[0038] In order to facilitate the fixing of the mounting plate 41 to the scissors 1 and also to facilitate the installation of the workpiece limiting assembly 3 to the mounting plate 41 , a mounting hole 43 and a limiting slide groove are provided on the mounting plate 41 .

[0039] The mounting hole 43 is a rectangular hole that passes through the mounting plate 41. The mounting hole 43 is at a certain distance from the upper and lower end surfaces of the mounting plate 41 and does not pass through the mounting plate 41. The upper end of the mounting hole 43 is arc-shaped. The main function of the mounting hole 43 is to facilitate the installation of the mounting plate 41 on the scissors 1. It also serves as a guide hole for the mounting plate 41 to slide along the shearing direction of the scissors 1. The mounting hole 43 extends in the width direction of the mounting plate 41, and for the convenience of installation, the size of the mounting hole 43 is slightly larger than the circular mounting hole opened on the scissors 1, and the rectangular mounting hole 43 on the mounting plate 41 corresponds one-to-one to the circular mounting hole on the scissors 1.

[0040] In order to ensure the stability of the fixing of the mounting plate 41 and prevent the mounting plate 41 from moving in other directions besides the up and down directions, a pressing plate 5 is arranged on the side of the mounting plate 41. The pressing plate 5 is a long metal plate with a rectangular cross-section. A plurality of circular through holes are arranged on the surface of the pressing plate 5 at intervals corresponding to the mounting holes on the scissors 1. The scissors 1, the mounting plate 41 and the pressing plate 5 can be connected together by screws. After being fixed, the mounting plate 41 can only slide in the up and down directions along the mounting holes 43.

[0041] In order to facilitate the mounting plate 41 to slide up and down along the mounting hole 43 and prevent the screws between the pressure plate 5 and the scissors 1 from being too tight, resulting in poor sliding of the mounting plate 41, a fixing ring 42 is placed at the upper end of the mounting hole 43 in the mounting plate 41. The fixing ring 42 is a circular metal ring. The thickness of the fixing ring 42 is slightly larger than the plate thickness of the mounting plate 41, that is, after the pressure plate 5 clamps and fixes the mounting plate 41 on the scissors 1, the fixing ring 42 is in direct contact with the inner side surface of the pressure plate 5, and there is a gap between the inner side surface of the pressure plate 5 and the surface of the mounting plate 41. In order to improve the smoothness of the sliding of the mounting plate 41, grease is coated in the gap between the two. The grease can play a lubricating role on the one hand, and on the other hand, it can also fill the gap to prevent the mounting plate 41 from shaking due to the gap.

[0042] In order to limit the upward and downward sliding of the mounting plate 41 , a compression spring is fixed in the mounting hole 43 on the mounting plate 41 . This compression spring is named the first compression spring 46 . One end of the first compression spring 46 abuts against the lower end surface of the mounting hole 43 , and the other end abuts against the fixing ring 42 .

[0043] In order to facilitate the installation of the workpiece limiting assembly 3 , a limiting slide groove is provided on the surface of the mounting plate 41 perpendicular to the mounting plate 41 , and the limiting slide groove includes a rectangular first slide groove 44 and an arc-shaped second slide groove 45 .

[0044] The function of the first slide groove 44 and the second slide groove 45 is to install the workpiece limiting assembly 3, and the setting of the first slide groove 44 and the second slide groove 45 is to make the adaptive limiting device 2 adapt to different shearing machines. When the gantry shearing machine is used, the workpiece limiting assembly 3 is installed in the first slide groove 44, and when the crocodile shearing machine is used, the workpiece limiting assembly 3 is installed in the second slide groove 45.

[0045] The first slide groove 44 is a groove with a rectangular cross-section. The first slide groove 44 is opened on the surface of the mounting plate 41 and extends vertically in the width direction of the mounting plate 41. In order to facilitate the installation of the workpiece limiting assembly 3, the first slide groove 44 passes through the mounting plate 41 below, that is, the first slide groove 44 is a single-through groove with one end passing through the outside.

[0046] In order to facilitate the installation of the roller 35 in the workpiece limiting assembly 3 , a slideway 47 having the same thickness as the roller 35 is concavely provided on two opposite side walls in the first slide groove 44 , and the roller 35 can slide in the slideway 47 .

[0047] The second slide groove 45 is an arc-shaped groove with a fan-shaped cross-section. The second slide groove 45 is opened on the surface of the mounting plate 41, and in order to adapt to the crocodile shearing machine, the center of the second slide groove 45 is concentric with the rotation axis of the scissors 1 in the crocodile shearing machine. In this way, when used in the crocodile shearing machine, the workpiece limiting assembly 3 can gradually move with the rotation of the scissors 1. In addition, in order to facilitate the installation of the workpiece limiting assembly 3, the bottom of the second slide groove 45 also passes through the mounting plate 41, that is, the second slide groove 45 is a single-through groove with one end passing through the outside world.

[0048] In order to facilitate the workpiece limiting assembly 3 to limit workpieces of different sizes, multiple groups of limiting slide grooves are provided on the mounting plate 41 along the length direction of the mounting plate 41 , and five groups are preferably provided in this embodiment.

[0049] In addition, in order to limit the workpiece limiting assembly 3 installed in the limiting slide groove and prevent the workpiece limiting assembly 3 from falling from the open end of the limiting slide groove, a baffle 48 is fixed to the lower end surface of the mounting plate 41 with screws, and the opening at the lower end of the mounting plate 41 is closed by the baffle 48 to prevent the workpiece limiting assembly 3 installed in the limiting slide groove from falling.

[0050] Regarding the switching of the adaptive limiting device 2 between the gantry shearing machine and the crocodile shearing machine, when the gantry shearing machine is used, the workpiece limiting component 3 is installed in the first slide groove 44. At this time, the five limiting teeth 31 in the workpiece limiting component 3 are horizontally distributed and contracted synchronously to limit the workpiece. When the crocodile shearing machine is used, the workpiece limiting component 3 is installed in the second slide groove 45. At this time, the five limiting teeth 31 in the workpiece limiting component 3 contract in an arc in sequence as the scissors 1 rotate during the shearing process to limit the workpiece.

[0051] like Figure 1 , 4 As shown in FIGS. 8 and 9 , the workpiece limiting assembly 3 mainly includes a limiting tooth 31, a slide plate 32 and a roller 35. The roller 35 is placed in a slideway 47 in the limiting slide groove. The slide plate 32 is connected to the roller 35. The limiting tooth 31 connects the slide plate 32 and the roller 35. The limiting tooth 31 slides along the slideway 47 under the action of the roller 35.

[0052] The limiting tooth 31 is a metal plate with a trapezoidal cross-section. The main function of the limiting tooth 31 is to contact the workpiece to be sheared to prevent the workpiece from sliding. A fixing block 34 with a rectangular cross-section is welded at the larger end of the limiting tooth 31. Two circular through holes are provided on the surface of the fixing block 34. The limiting tooth 31 can be connected to the slide plate 32 and the roller 35 by using the circular through holes and screws.

[0053] An anti-sliding block 33 with a rectangular cross section is fixed to the other end of the limiting tooth 31 by screws. The anti-sliding block 33 is made of rubber and directly contacts the workpiece to be sheared to prevent the workpiece from sliding sideways during shearing.

[0054] The slide plate 32 is a metal plate with an "L"-shaped cross section. Two circular through holes are opened on the larger plate of the slide plate 32. Two rollers 35 are fixed on the slide plate 32 through the through holes. The slide plate 32 connects the two rollers 35 together. When the rollers 35 move along the slideway 47, they can drive the slide plate 32 to move accordingly.

[0055] In order to facilitate the limiting tooth 31 to automatically adapt to the shape of the workpiece to be sheared, a compression spring is fixed in the limiting slide groove, and this compression spring is named as an adaptable compression spring 36. One end of the adaptable compression spring 36 contacts the side of the upper end of the limiting slide groove, and the other end contacts the smaller plate on the slide plate 32. When the roller 35 slides along the slideway 47 in the limiting slide groove, the adaptable compression spring 36 is compressed.

[0056] In order to control the order in which the workpiece limiting assembly 3 and the sliding assembly 4 slide in the shearing direction, the stiffness coefficient of the first compression spring 46 is greater than the stiffness coefficient of the adaptive compression spring 36 in the limiting slide groove. In this way, when the workpiece limiting assembly 3 is fully retracted onto the mounting plate 41, the mounting plate 41 moves upward, ensuring real-time limitation of the workpiece during the shearing process without affecting the normal use of the scissors.

[0057] In addition, in order to facilitate the sliding of the workpiece limiting assembly 3, a clearance groove is opened on the pressure plate 5. When the workpiece limiting assembly 3 slides, a part of the limiting tooth 31 can enter the limiting groove to prevent the pressure plate 5 from blocking the limiting tooth 31 from sliding along the limiting groove.

[0058] In order to prevent external dust from entering the limiting slide groove and affecting the movement of the workpiece limiting assembly 3, a retractable accordion protective cover 6 is provided on the outside of the limiting slide groove and the mounting hole 43. The limiting slide groove and the mounting hole 43 are protected by the accordion protective cover 6. The accordion protective cover 6 is an existing device and is available in a variety of specifications and sizes and can be purchased for direct use.

[0059] Regarding the process of the workpiece limit component 3 automatically adapting to the shape of the workpiece:

[0060] Under the action of the adaptive compression spring 36 and gravity, the limiting teeth 31 will first contact the scissors 1 and the workpiece. When shearing rods or pipes, the scissors 1 move downward, and the limiting teeth 31 first contact the workpiece. Under the action of the workpiece, the limiting teeth 31 in contact with the workpiece slide along the limiting slide groove and partially retract into the mounting plate 41, while the remaining limiting teeth 31 not in contact with the workpiece do not retract, that is, the self-adaptation of the workpiece is completed. When the scissors 1 continue to move downward until they contact the workpiece, the workpiece cannot move left or right due to the blocking of the limiting teeth 31 above the workpiece and the limiting teeth 31 on both sides of the workpiece, and the shearing is completed.

[0061] When shearing the plate, the scissors 1 move downward, and the limiting teeth 31 first contact the workpiece. Under the action of the workpiece, the limiting teeth 31 in contact with the workpiece slide along the limiting slide groove and partially retract into the mounting plate 41. Since there is an anti-sliding block 33 at the end of the limiting teeth 31, the friction between the multiple anti-sliding blocks 33 and the workpiece is increased to prevent the workpiece from sliding sideways.

[0062] In addition to being used for the manufacture of new products, this technical solution can also be used for the transformation of existing scissors, with low cost of use. It is also applicable to gantry shears and crocodile shears, and has strong versatility.

[0063] The use process of this embodiment: when using it, first select the installation position of the workpiece limiting component 3 according to the equipment used. If a gantry shearing machine is used, the workpiece limiting component 3 is installed in the first slide groove 44. When a crocodile shearing machine is used, the workpiece limiting component 3 is installed in the second slide groove 45. Then it can be sheared. When the scissors 1 move down, the limiting teeth 31 in the workpiece limiting component 3 will contact the workpiece first, automatically adapt to the shape of the workpiece, and prevent the workpiece from sliding. Then the scissors 1 continue to move down to shear the workpiece. At this time, the limiting teeth 31 gradually shrink into the mounting plate 41. When the limiting teeth 31 are completely retracted into the mounting plate 41 and the workpiece has not been completely cut off, the mounting plate 41 will contact the workpiece. When the scissors 1 are continuously pressed down, the mounting plate 41 slides along the mounting hole 43 without affecting the shearing of the scissors 1. After the shearing is completed, the scissors 1 are lifted, and the mounting plate 41 is reset under the action of the first compression spring 46. The limiting teeth 31 are reset under the action of the adaptation compression spring 36, waiting for the next shearing.

[0064] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A non-slip metal scissors, comprising a pair of scissors (1), wherein the scissors (1) are detachably mounted on a shearing machine, and characterized in that: The invention also comprises an adaptive limiting device (2) arranged on the scissors (1) for limiting the workpiece to be sheared, the adaptive limiting device (2) comprising a workpiece limiting component (3) and a sliding component (4), the sliding component (4) being arranged on the scissors (1) and sliding back and forth relative to the shearing direction of the scissors (1), the workpiece limiting component (3) being detachably arranged on a mounting plate (41) in the sliding component (4), the workpiece limiting component (3) automatically adapting to the shape of the workpiece to be sheared and limiting the position of the workpiece to be sheared, and the workpiece limiting component (3) gradually shrinking into the mounting plate (41) as the scissors (1) shear the workpiece.

2. The anti-slip metal scissors according to claim 1, characterized in that: The workpiece limiting assembly (3) comprises a limiting tooth (31), a slide plate (32), a roller (35) and an adaptable compression spring (36); the slide plate (32) is arranged in a limiting slide groove on a mounting plate (41); the adaptable compression spring (36) is arranged in the limiting slide groove and contacts the slide plate (32); the roller (35) is arranged on the slide plate (32) and rolls along the limiting slide groove; the limiting tooth (31) is arranged on the slide plate (32) and moves along the limiting slide groove with the roller (35) and cooperates with the adaptable compression spring (36) to adapt to the shape of the workpiece to be sheared and limit the workpiece to be sheared.

3. The anti-slip metal scissors according to claim 2, characterized in that: The limiting teeth (31) are closer to the workpiece to be sheared in the shearing direction of the scissors (1), and the limiting teeth (31) contact the workpiece to be sheared before the scissors (1).

4. The anti-slip metal scissors according to claim 2, characterized in that: An anti-sliding block (33) is detachably provided at the end of the limiting tooth (31), and the anti-sliding block (33) is in contact with a workpiece to be sheared.

5. The anti-slip metal scissors according to claim 1, characterized in that: The sliding assembly (4) comprises a mounting plate (41), the mounting plate (41) being provided with a mounting hole (43) and a limiting slide groove, the mounting plate (41) being arranged on the scissors (1) through the mounting hole (43), the mounting plate (41) sliding back and forth along the mounting hole (43) relative to the shearing direction of the scissors (1), a first compression spring (46) being arranged in the mounting hole (43), the stiffness coefficient of the first compression spring (46) being greater than the stiffness coefficient of the adaptive compression spring (36) in the limiting slide groove.

6. The anti-slip metal scissors according to claim 5, characterized in that: The limiting slide groove comprises a first slide groove (44) and a second slide groove (45); the first slide groove (44) is rectangular and parallel to the mounting hole (43); the second slide groove (45) is arc-shaped and concentric with the rotation axis of the scissors (1) for rotary cutting; and the limiting teeth (31) are detachably arranged on the slide plates (32) in the first slide groove (44) and the second slide groove (45).

7. The anti-slip metal scissors according to claim 5, characterized in that: At least two groups of mounting holes (43) and limiting slide grooves are arranged on the mounting plate (41) at intervals along the length direction of the mounting plate (41).

8. The anti-slip metal scissors according to claim 5, characterized in that: An accordion protective cover (6) is arranged outside the mounting hole (43) and the limiting slide groove on the mounting plate (41), and the accordion protective cover (6) shrinks as the workpiece limiting component (3) and the sliding component (4) move.

9. The anti-slip metal scissors according to claim 1, characterized in that: The workpiece limiting components (3) correspond one-to-one with the limiting slide grooves on the mounting plate (41), and at least two groups are provided.

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