A cutting device for discharging metal bar stock

Abstract

The utility model discloses a kind of cutting device for metal bar blanking, belong to metal bar shearing device technical field, comprising: lower clamp, for supporting metal bar;Upper clamp, can be moved along the direction perpendicular to the axis of the metal bar and with the lower clamp to adhere to to clamp the metal bar;Punch, after upper clamp clamps metal bar, metal bar can be sheared by the punch;Positioning member, the positioning member can rotate around its pin shaft, and initially, the clamping portion of the one end of the positioning member is in abutment with the outer circumferential surface of metal bar;When clamping portion is inserted inside V-shaped groove, the straight edge on the clamping portion can be contacted with the side wall of V-shaped groove with straight edge, so as to avoid metal bar to move forward, in this embodiment, by the cooperation of clamping portion and V-shaped groove can stably limit metal bar, so as to facilitate punch to shear metal bar.

Description

Technical Field

[0001] This utility model relates to the technical field of metal bar shearing devices, and in particular to a cutting device for feeding metal bars. Background Technology

[0002] The blanking process of cutting and separating metal bars is the first step in the forming and manufacturing of most mechanical parts. It is characterized by large volume and wide application. In the forging field, the first step is the blanking of metal bars. Efficient and precise blanking technology has become a key support for improving product quality and production efficiency and reducing production costs.

[0003] Before shearing metal bars, V-grooves are usually cut on their outer circumference to ensure a flat cross-section. After being conveyed by rollers or conveyor belts, the metal bars with V-grooves are sheared in conjunction with stamping parts. However, during the conveying process, the position of the V-grooves needs to be manually positioned by the staff, which is a rather cumbersome operation.

[0004] Therefore, it is necessary to provide a cutting device for feeding metal bars to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a cutting device for feeding metal bars, so as to solve the technical problems mentioned in the background art.

[0006] Based on the above ideas, this utility model provides the following technical solution: a cutting device for feeding metal bars, comprising: The lower clamp is used to support the metal bar. The upper clamp is movable in a direction perpendicular to the axis of the metal bar and fits against the lower clamp to clamp the metal bar; The punch is used to cut the metal bar after the upper clamp clamps it. The positioning component is rotatable around its own pivot pin. Initially, the locking part at one end of the positioning component abuts against the outer circumferential surface of the metal bar. When the locking part is aligned with the V-groove on the outer surface of the metal bar, the engagement between the locking part and the V-groove can prevent the metal bar from moving forward.

[0007] As a further embodiment of this utility model: a base is provided at the pin, the pin passes through the base, and the pin is elastically engaged with the base along its own circumferential direction.

[0008] As a further embodiment of this utility model: a push rod is provided at the end of the positioning member away from the snap-fit ​​part. The push rod is located below the positioning member and can move in a direction perpendicular to the axis of the metal bar. When the push rod presses upward against the end of the positioning member away from the snap-fit ​​part, the snap-fit ​​part can be moved out of the V-groove.

[0009] As a further embodiment of this utility model: the side of the snap-fit ​​portion that contacts the V-groove is set as a straight edge to prevent the snap-fit ​​portion from being squeezed by the V-groove and deflecting downward around the pin axis.

[0010] As a further embodiment of this invention, the V-groove on the metal bar is formed by turning.

[0011] As a further embodiment of this utility model: multiple sets of protruding ribs are provided on the path of the metal bar movement. The multiple sets of protruding ribs are symmetrically distributed about the axis of the metal bar. The protruding ribs can move in a direction perpendicular to the axis of the metal bar. The metal bar is squeezed by the protruding ribs to roll out a V-groove.

[0012] As a further embodiment of this utility model: a top plate is provided above the upper clamp, and multiple sets of hydraulic rods are fixedly installed at the bottom of the top plate. Among them, the output end of a portion of the hydraulic rods is fixed to the upper clamp to drive the upper clamp to move in the vertical direction, and the output end of another portion of the hydraulic rods is fixed to the punch to cut the metal bar.

[0013] Compared with the prior art, the beneficial effects of this utility model are: one side wall of the V-groove is a straight edge. When the snap-fit ​​part is inserted into the V-groove, the straight edge on the snap-fit ​​part can contact the straight side wall of the V-groove, thereby preventing the metal bar from moving forward. In this embodiment, the cooperation between the snap-fit ​​part and the V-groove can stably limit the metal bar, which is beneficial for the punch to cut the metal bar. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram showing the arrangement of multiple sets of protruding ribs along a direction parallel to the axis of the metal bar. Figure 2 This is a schematic diagram showing the arrangement of multiple sets of protruding ribs along the vertical and horizontal directions of this utility model; Figure 3 This is a schematic diagram of the positioning component structure of this utility model; Figure 4 This is a utility model Figure 3 A magnified structural diagram at point A; Figure 5 This is a schematic diagram of the convex ridge of this utility model having a right-angled triangle cross-section; Figure 6 This is a schematic diagram of the convex ridge of this utility model having an isosceles triangle cross section; Figure 7 This is a schematic diagram of the snap-fit ​​part of this utility model inserted into a V-shaped groove with a right-angled triangle cross section; Figure 8 This is a schematic diagram of the snap-fit ​​part of this utility model inserted into a V-shaped groove with an isosceles triangular cross section.

[0016] In the diagram: 1. Upper clamp; 2. Lower clamp; 3. Metal bar; 301. V-groove; 4. Punch; 5. Protruding ridge; 501. Connector; 6. Positioning component; 601. Snap-fit ​​part; 7. Push rod; 8. Pin; 9. Elastic component; 10. Drive assembly; 11. Lifting unit. Detailed Implementation

[0017] like Figures 1-8 As shown, a cutting device for cutting metal bars includes an upper clamp 1 and a lower clamp 2 for clamping the metal bar 3. The lower clamp 2 is fixed to an external support platform, while the upper clamp 1 can move vertically to clamp or release the metal bar 3. It can be understood that when the upper clamp 1 clamps the metal bar 3, the metal bar 3 can be cut by an external punch 4. When the upper clamp 1 is released, the metal bar 3 can be moved horizontally by being conveyed by an external roller or conveyor belt, which is beneficial for continuous cutting of the metal bar 3.

[0018] In actual use, if the metal bar 3 extending from the upper clamp 1 and the lower clamp 2 is directly cut, the cross section of the metal bar 3 is usually not regular enough. Therefore, before the cutting operation, the metal bar 3 will be machined with multiple sets of V-grooves 301 on the machine tool. The V-grooves 301 help to improve the flatness of the cross section.

[0019] A positioning component is provided on the path for conveying the metal bar 3. The positioning component includes a positioning element 6, which can rotate around its own pin 8. Further, a base is provided at the pin 8, which is installed on the ground or an external support. The pin 8 passes through the base and is elastically connected to the base along its own circumferential direction, so that in the initial state, the locking part 601 at one end of the pin 8 can abut against the outer surface of the metal bar 3. When the V-groove 301 on the outer circumferential surface of the metal bar 3 is aligned with the locking part 601, the locking part 601 can be inserted into the V-groove 301 to restrict the metal bar 3 from continuing to move.

[0020] Furthermore, a push rod 7 is provided at the end of the positioning member 6 away from the locking part 601. The push rod 7 is connected to the output end of the lifting unit 11. The lifting unit 11 can drive the push rod 7 to move in the vertical direction. The lifting unit 11 can be, for example, a cylinder or an electric cylinder. Initially, under the action of elastic force, the positioning member 6 causes the locking part 601 to abut against the outer circumferential surface of the metal bar 3. When the locking part 601 is inserted into the V-groove 301, the metal bar 3 is restricted from moving forward, while the other V-groove 301 on the metal bar 3 just moves out of the upper clamp 1 and the lower clamp 2. The punch 4 can cut the metal bar 3. After cutting, the cylinder or electric cylinder drives the push rod 7 to move upward. The pressure of the push rod 7 on the tail end of the positioning member 6 can cause the positioning member 6 to rotate around the pin 8 so that the locking part 601 moves out of the V-groove 301, thereby facilitating the forward movement of the metal bar 3 for continuous cutting.

[0021] One side of the latching part 601 is configured as a vertical surface, which allows the vertical surface of the latching part 601 to contact the side wall of the V-groove 301 during the process of limiting the metal bar 3. Figures 7-8 As shown, in one embodiment of the V-groove 301, the cross-section of the V-groove 301 can be an isosceles triangle. In this embodiment, when the pressure between the metal bar 3 and the locking part 601 increases, the pressure on the locking part 601 by the sidewall of the V-groove 301 causes one end of the locking part 601 to tend to deflect downwards, so that the locking part 601 can move out of the V-groove 301. In another embodiment of the V-groove 301, the cross-section of the V-groove 301 can be a right triangle, that is, one sidewall of the V-groove 301 is a straight edge. When the locking part 601 is inserted into the V-groove 301, the straight edge of the locking part 601 can contact the straight sidewall of the V-groove 301, thereby preventing the metal bar 3 from moving forward. In this embodiment, the cooperation between the locking part 601 and the V-groove 301 can stably limit the metal bar 3, which is beneficial for the punch 4 to cut the metal bar 3.

[0022] In practical use, in addition to machining the V-groove 301 on a machine tool, the grooving operation can also be completed during the movement of the metal bar 3. Specific embodiments are as follows: Multiple sets of extrusion assemblies are arranged along the moving path of the metal bar 3. Each extrusion assembly includes a protruding rib 5, the cross-sectional shape of which is the same as that of the V-groove 301. Specifically, a connector 501 is fixed to the outer side of the protruding rib 5, and the connector 501 is connected to an external drive assembly 10. The drive assembly 10 can be, for example, a hydraulic rod. The telescopic end of the hydraulic rod is fixed to the connector 501 to drive the protruding rib 5 to move in a direction perpendicular to the axis of the metal bar 3. The pressure between the protruding rib 5 and the outer circumferential surface of the metal bar 3 can form the V-groove 301. In one embodiment, the protruding rib 5 is semi-circular. When the two protruding ribs 5 on both sides form a ring, a V-shaped indentation can be formed on the outer circumferential surface of the metal bar 3. In this embodiment, multiple sets of protruding ribs 5 can be arranged in a direction parallel to the axis of the metal bar 3, thereby gradually increasing the depth of the V-groove 301, which is beneficial for reducing rolling resistance and elastic deformation rebound of the material.

[0023] In another embodiment, the protruding ridge 5 is arc-shaped, combined with Figure 2 As shown, in this embodiment, two sets of protruding ribs 5 are symmetrically arranged along the center of the axis of the metal bar 3, located in the horizontal and vertical directions respectively. A circular indentation (i.e., V-groove 301) can be formed by two compressions. Compared with the semi-circular protruding ribs 5, the protruding ribs 5 in this embodiment are shorter in length. Therefore, the contact area with the metal bar 3 is limited. A complete circular indentation is formed by multiple compressions, making the indentation smoother.

[0024] A top plate is provided above the upper clamp 1. The top plate is fixed to the external support, and multiple sets of hydraulic rods are fixedly installed at the bottom of the top plate. The output end of a portion of the hydraulic rods is fixed to the upper clamp 1 to drive the upper clamp 1 to move in the vertical direction, while the output end of another portion of the hydraulic rods is fixed to the punch 4 to cut the metal bar 3.

[0025] Combination Figure 4 As shown, the base is provided with a stepped hole for the pin 8 to pass through. The pin 8 is fixedly connected to the positioning member 6, and the pin 8 is rotatably engaged with the base through a bearing. Furthermore, an elastic member 9 is sleeved on the outside of the pin 8. The elastic member 9 can be, for example, a torsion spring or a coil spring, and both ends of the elastic member 9 are connected to the pin 8 and the base, respectively.

[0026] The above-disclosed examples are merely preferred embodiments of this application, intended to facilitate understanding and implementation by those skilled in the art. However, they cannot be used to limit the scope of this application. Therefore, equivalent variations made within the scope of this application are still within the scope of this application.

Claims

1. A cutting device for feeding metal bars, characterized in that, include: The lower clamp (2) is used to support the metal bar (3); The upper clamp (1) can move in a direction perpendicular to the axis of the metal bar (3) and fit against the lower clamp (2) to clamp the metal bar (3); The punch (4) can cut the metal bar (3) after the upper clamp (1) clamps it. Positioning component (6) is rotatable around its own pin (8). Initially, the snap-fit ​​part (601) at one end of the positioning component (6) abuts against the outer circumferential surface of the metal bar (3). When the snap-fit ​​part (601) is aligned with the V-groove (301) on the outer surface of the metal bar (3), the metal bar (3) can be prevented from moving forward by the cooperation between the snap-fit ​​part (601) and the V-groove (301).

2. The cutting device for feeding metal bars according to claim 1, characterized in that: A base is provided at the pin (8), the pin (8) passes through the base, and the pin (8) is elastically engaged with the base along its own circumferential direction.

3. The cutting device for feeding metal bars according to claim 2, characterized in that: The positioning member (6) is provided with a push rod (7) at one end away from the locking part (601). The push rod (7) is located below the positioning member (6) and can move in a direction perpendicular to the axis of the metal bar (3). When the push rod (7) presses the end of the positioning member (6) away from the locking part (601) upward, the locking part (601) can be moved out of the V-groove (301).

4. The cutting device for feeding metal bars according to claim 3, characterized in that: The side of the snap-fit ​​part (601) that contacts the V-groove (301) is set as a straight edge to prevent the snap-fit ​​part (601) from being squeezed by the V-groove (301) and deflecting downward around the pin (8).

5. The cutting device for feeding metal bars according to claim 1, characterized in that: The V-groove (301) on the metal bar (3) is formed by turning.

6. The cutting device for feeding metal bars according to claim 1, characterized in that: Multiple sets of protrusions (5) are provided on the path of the metal bar (3). The multiple sets of protrusions (5) are symmetrically distributed about the axis of the metal bar (3). The protrusions (5) can move in a direction perpendicular to the axis of the metal bar (3). The metal bar (3) is squeezed by the protrusions (5) to roll out V-grooves (301).

7. The cutting device for feeding metal bars according to claim 1, characterized in that: A top plate is provided above the upper clamp (1), and multiple sets of hydraulic rods are fixedly installed at the bottom of the top plate. Among them, the output end of a part of the hydraulic rods is fixed to the upper clamp (1) to drive the upper clamp (1) to move in the vertical direction, and the output end of another part of the hydraulic rods is fixed to the punch (4) to cut the metal bar (3).

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