Quick shearing mechanism

Abstract

The present invention relates to a quick shearing mechanism, comprising a shearing guide rail seat, characterized in that a "convex"-shaped opening groove is provided on one side of the shearing guide rail seat, a cavity is provided through the middle of the shearing guide rail seat, a shearing guide rail is provided in the opening groove, a cam bar rod connected with bolts is provided on the shearing guide rail, the middle section of the cam bar rod is S-shaped, a shearing lever is provided in the cavity, the cam bar rod is stuck in the shearing lever, a shearing roller is provided in the shearing lever, a shearing knife bar is provided in front of the shearing lever, and a scissor plate is provided on the shearing knife bar near the shearing end. When the shearing guide rail moves toward the side of the shearing guide rail seat, the cam bar rod is pushed to move toward the shearing end, so that the shearing roller drives the shearing lever to move, and the shearing knife bar is pushed to perform shearing movement.

Description

Technical Field

[0001] The invention relates to the field of cold heading machines, in particular to a rapid shearing mechanism. Background Art

[0002] The overall structure of an existing cold heading machine can be divided into five functional parts: the main transmission mechanism, the feeding mechanism, the shearing mechanism, the cold heading forming mechanism, and the ejection mechanism. During the wire processing process, the metal wire is fed into the shearing mechanism by the feeding mechanism. After the shearing plate of the shearing mechanism cuts the metal blank to a predetermined length, the metal blank is then transferred to the cold heading forming mechanism by a gripping robot for plastic forming. During this entire process, the shearing of the metal wire is generally slow, resulting in an uneven cut surface when the blank is sheared.

[0003] Existing CN201711430105.0 discloses a swing-type rapid cutting device for a cold heading machine, comprising a shearing base of the cold heading machine, the shearing base being provided with a guide through-hole and a mounting through-hole; a pull rod passing through the guide through-hole; a shearing cam linked to the driving gear of the cold heading machine; a first shearing rocker arm having a V-shaped structure and a bent portion hinged to the shearing base of the cold heading machine; one end of the first shearing rocker arm being hinged to one end of the pull rod, and the other end thereof resting on the shearing cam; a second shearing rocker arm having a V-shaped structure and a bent portion hinged to the shearing base of the cold heading machine; one end of the second shearing rocker arm being hinged to the other end of the pull rod; a scissor rod passing through the mounting through-hole, the scissor rod being located above the other end of the second shearing rocker arm and being hinged thereto. The prior art has the following problems: the entire structure is relatively complex and the V-shaped structure is not stable enough. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a rapid shearing mechanism with a simple structure, high stability and the ability to output a large shearing force.

[0005] In order to achieve the above-mentioned purpose, the present invention designs a quick shearing mechanism, including a shearing guide rail seat, characterized in that a "convex" opening groove is provided on one side of the shearing guide rail seat, a cavity is provided through the middle of the shearing guide rail seat, a shearing guide rail is provided in the opening groove, a cam bar connected with bolts is provided on the shearing guide rail, the middle section of the cam bar is S-shaped, a shearing lever is provided in the cavity, the cam bar is stuck in the shearing lever, a shearing roller is provided in the shearing lever, a shearing knife bar is provided on the shearing side of the shearing lever, and a scissor plate is provided on the shearing knife end. When the shearing guide rail moves toward the side of the shearing guide rail seat, the cam bar is pushed to move toward the shearing end, so that the shearing roller drives the shearing lever to move, and the shearing knife bar is pushed to perform shearing movement.

[0006] Preferably, the shear lever is spoon-shaped, with a fixed shaft disposed on the handle of the shear lever, and the body of the shear lever being slightly smaller than the cavity. The fixed shaft allows the shear lever to be fixedly mounted within the shear guide rail seat and to swing about the fixed shaft, while the larger cavity provides space for the shear lever to move.

[0007] Preferably, the shearing lever and the shearing knife rod are connected by a columnar connecting block, the connecting sides of the connecting block are arc-shaped, the shearing lever and the shearing knife rod are provided with arc grooves adapted to the connecting block, the shearing knife rod is covered with a copper sleeve, the shearing lever is in circular motion, and the shearing knife rod is in linear motion, and the use of columnar connecting blocks with arc shapes on both sides for connection is adapted to the movement mode of the shearing lever and the shearing knife rod, which can only transmit push but not rotation, and the arc groove prevents the shearing lever and the shearing knife rod from interfering with the connecting block during movement, and the copper sleeve can reduce the wear of the shearing knife rod.

[0008] Preferably, a fixing groove is provided in the middle section of the shearing guide rail, and protruding limit blocks are provided on both sides of the fixing groove. The fixing groove and the limit blocks facilitate the positioning and installation of the cam bar, and make the cam bar stable in the working position during movement without detachment.

[0009] Preferably, a shearing guide copper plate is provided on the outside of the shearing guide, and a shearing guide seat end plate is provided on the outside of the opening groove of the shearing guide seat. The shearing guide seat end plate fixes the shearing guide in the opening groove, and the shearing guide copper plate plays a buffering role, so that the shearing guide reduces the impact.

[0010] Preferably, connecting shear guide rods are fixed to the upper and lower side surfaces of the tail end of the shearing knife bar. The shearing guide rods and the shearing knife bar extend through the cavity and the end plate of the shearing guide rail seat in the same direction, and a fixing plate is provided on the outer side of the shearing guide rods. The shearing guide rods extend through the shearing guide rail seat, restricting the shearing guide rods to linear motion, thereby restricting the movement of the shearing knife bar to linear cutting motion, thereby smoothing the sheared end surface of the wire material. The shearing guide rods can also limit the movement of the connecting block to prevent it from moving up and down. The fixing plate further fixes the upper and lower shearing guide rods.

[0011] Preferably, the shearing lever is provided with a limiting groove, and the cam bar is arranged in the limiting groove. The limiting groove can fix the cam bar and prevent position deviation during operation.

[0012] The invention designs a fast shearing mechanism, which changes the movement process by the S-shape of the cam bar, and enables the movement speed to be extremely fast according to the expected shearing requirements, and the shearing guide rod restricts the shearing knife rod so that the shearing knife rod can perform linear shearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the quick shearing mechanism of the present invention.

[0014] Figure 2 It is a structural schematic diagram of the shearing guide rail seat of the rapid shearing mechanism of the present invention.

[0015] Figure 3 It is a schematic diagram of the shearing guide structure of the present invention.

[0016] Figure 4 It is a structural schematic diagram of the shearing guide rail seat of the present invention.

[0017] Figure 5 It is a schematic structural diagram of the shearing lever of the present invention.

[0018] Among them: shearing guide rail seat 1, opening groove 2, cavity 3, shearing guide rail 4, fixed groove 41, limit block 42, cam bar 5, shearing lever 6, limit groove 61, shearing roller 7, shearing knife rod 8, shearing guide rod 9, fixed plate 91, scissors plate 10, shearing guide rail copper plate 11, shearing guide rail seat end plate 12, fixed shaft 13, connecting block 14, arc groove 15, copper sleeve 16. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example 1

[0021] like Figure 1 As shown, a quick shearing mechanism described in this embodiment includes a shearing guide rail seat 1, characterized in that a "convex" opening groove 2 is provided on one side of the shearing guide rail seat 1, a cavity 3 is provided through the middle of the shearing guide rail seat 1, a shearing guide rail 4 is provided in the opening groove 2, a cam bar 5 connected with bolts is provided on the shearing guide rail 4, the middle section of the cam bar 5 is S-shaped, a shearing lever 6 is provided in the cavity 3, the cam bar 5 is stuck in the shearing lever 6, a shearing roller 7 is provided in the shearing lever 6, a shearing knife bar 8 is provided in front of the shearing lever 6, and a scissor plate 10 is provided on the shearing knife bar 8 near the feeding end. When the shearing guide rail 4 moves toward the side of the shearing guide rail seat 1, the cam bar 5 is pushed to move toward the shearing end, so that the shearing roller 7 drives the shearing lever 6 to move, and thereby the shearing lever 6 pushes the shearing knife bar 8 to move, so that the scissor plate 10 provided on the shearing knife bar 8 is used for shearing.

[0022] Example 2

[0023] This embodiment provides a quick shearing mechanism, based on the embodiment 1, such as Figure 2 and Figure 5As shown, the shearing lever 6 is spoon-shaped, and the handle of the shearing lever 6 is provided with a fixed shaft 13, and the spoon body is slightly smaller than the size of the cavity 3. The shearing lever 6 can swing with the fixed shaft 13 as the center of rotation, and the cavity 3 is larger to leave room for movement for the shearing lever 6; the shearing lever 6 and the shearing knife bar 8 are connected by a columnar connecting block 14, and the connecting sides of the connecting block 14 are both arc-shaped. The shearing lever 6 and the shearing knife bar 8 are both provided with an arc groove 15 adapted to the connecting block 14, and the shearing knife bar 8 is covered with a copper sleeve 16. The shearing lever 6 swings in an arc with the fixed shaft 13 as the circle, while the shearing knife bar 8 moves in a straight line, and is connected using a columnar connecting block 14 with arc shapes on both sides, so that the shearing lever 6 and the shearing knife bar 8 The movement mode is adapted and can only transmit push but not rotation. The arc grooves 15 on the shearing lever 6 and the shearing knife rod 8 are both arcs of no more than 180°, thereby avoiding interference between the shearing lever 6 and the shearing knife rod 8 when they move relative to each other on the connecting block 14. At the same time, an elastic mechanism, such as a compression spring, can be added between the fixed plate 91 and the shearing guide rail seat end plate 12. Through the elastic mechanism, the fixed plate 91 is always in an outward elastic state, so that the shearing guide rod 9 tightens the shearing knife rod 8, so that the connecting block 14 is always stuck in the arc groove 15, and the copper sleeve 16 can prevent the shearing knife rod 8 from wearing during reciprocating motion.

[0024] Example 3

[0025] This embodiment provides a quick shearing mechanism, such as Figure 3 As shown, the middle section of the shearing guide rail 4 is provided with a fixing groove 41, and protruding limit blocks 42 are provided on both sides of the fixing groove 41. The fixing groove 41 and the limit blocks 42 facilitate the positioning and installation of the cam bar 5, and make the cam bar 5 stable in the working position when it moves, and will not fall off; the outer side of the shearing guide rail 4 is provided with a shearing guide rail copper plate 11, and the shearing guide rail seat 1 has an open groove 2 and a shearing guide rail seat end plate 12 on the outer side. The shearing guide rail seat end plate 12 fixes the shearing guide rail 4 in the open groove 2, and the shearing guide rail copper plate 11 plays a buffering role, so that the shearing guide rail 4 reduces the impact; preferably, the upper and lower sides of the tail end of the shearing knife bar 8 are fixed with a connecting shearing guide rod 9, and the shearing guide rod 9 is in the same direction as the shearing knife bar 8 and passes through the cavity 3 and the shearing guide rail seat end plate 12, and a fixing plate 91 is provided on the outer side of the shearing guide rod 9. The shearing guide rod 9 passes through the shearing guide rail seat 1, restricting the shearing guide rod 9 to linear motion, thereby restricting the movement of the shearing knife bar 8 to linear cutting motion, thereby making the sheared end surface of the wire material smooth. The shearing guide rod 9 can also limit the movement of the connecting block 14 so that it does not move up and down. The fixing plate 91 further fixes the upper and lower shearing guide rods 9. The shearing lever 6 is provided with a limiting groove 61, and the cam bar 5 is arranged in the limiting groove 61. The limiting groove 61 facilitates the positioning and installation of the cam bar 5 while preventing the cam bar 5 from deviating from the working position during movement.

[0026] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rapid shearing mechanism, comprising a shearing guide rail seat (1), characterized in that: A "convex" opening groove (2) is provided on one side of the shearing guide rail seat (1), a cavity (3) is provided through the middle of the shearing guide rail seat (1), a shearing guide rail (4) is provided in the opening groove (2), a cam bar (5) connected with bolts is provided on the shearing guide rail (4), the middle section of the cam bar (5) is S-shaped, a shearing lever (6) is provided in the cavity (3), the cam bar (5) is stuck in the shearing lever (6), a shearing roller (7) is provided in the shearing lever (6), a shearing knife bar (8) is provided on the shearing side of the shearing lever (6), and a shearing plate (10) is provided on the shearing knife bar (8) on the shearing side. When the shearing guide rail (4) moves toward the side of the shearing guide rail seat (1), the cam bar (5) is pushed to move toward the shearing end, so that the shearing roller (7) drives the shearing lever (6) to move, thereby pushing the shearing knife bar (8) to perform shearing movement; The shearing lever (6) is spoon-shaped, the handle of the shearing lever (6) is provided with a fixed shaft (13), and the body of the shearing lever (6) is slightly smaller than the cavity (3); The shearing lever (6) is provided with a limiting groove (61), and the cam bar (5) is arranged in the limiting groove (61).

2. A rapid shearing mechanism according to claim 1, characterized in that: The shearing lever (6) and the shearing knife bar (8) are connected via a columnar connecting block (14). The connecting sides of the connecting block (14) are both arc-shaped. The shearing lever (6) and the shearing knife bar (8) are both provided with arc grooves (15) adapted to the connecting block (14). The shearing knife bar (8) is covered with a copper sleeve (16).

3. A rapid shearing mechanism according to claim 1, characterized in that: A fixing groove (41) is provided in the middle section of the shearing guide rail (4), and protruding limit blocks (42) are provided on both sides of the fixing groove (41).

4. A rapid shearing mechanism according to claim 1, characterized in that: A shearing guide rail seat end plate (12) that completely covers the opening groove (2) is provided on the outside of the shearing guide rail (4), and a shearing guide rail copper plate (11) is provided between the shearing guide rail (4) and the shearing guide rail seat end plate (12).

5. A rapid shearing mechanism according to claim 1, characterized in that: The upper and lower side surfaces of the tail end of the shearing knife bar (8) are both fixed with a shearing guide rod (9), the shearing guide rod (9) and the shearing knife bar (8) are arranged in parallel, and the tail end of the shearing guide rod (9) passes through the cavity (3) and the shearing guide rail seat end plate (12) and is fixed to the fixed plate (91).

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