CN213613852U - Cutter head of steel bar cutting machine and steel bar cutting machine - Google Patents

Abstract

The utility model provides a bar cutter tool bit and use bar cutter of this tool bit. The tool bit comprises a tool bit base body and a tool bit moving block provided with a groove, the tool bit base body is movably connected with the tool bit moving block, the opening direction of the groove is the same as the moving direction of the tool bit moving block, the tool bit moving block is rotatably connected with a clamping jaw through a clamping jaw shaft, the direction of the clamping jaw shaft is consistent with the direction of the groove, the clamping jaw is provided with a handle part and a claw part, the claw part is positioned in the front of the opening direction of the groove, and the claw part rotates towards the groove when the handle part rotates along the moving direction of the tool. The cutter head clamps the steel bar to be cut by using the clamping jaw, so that the cut section of the steel bar is neat and no splash injury occurs, and the steel bar cutting machine using the cutter head has high quality and high safety of a finished product; and this tool bit simple structure, need not to add other power equipment for its clamping device, be favorable to reforming transform current equipment, be suitable for and promote on a large scale.

Description

Cutter head of steel bar cutting machine and steel bar cutting machine

Technical Field

The utility model relates to a machining equipment field, concretely relates to bar cutter tool bit and bar cutter.

Background

At present, the reinforcing steel bar is cut off in a mode of cutting scattered materials by a saw blade, and mass production enterprises all adopt a cold extrusion type reinforcing steel bar cutting machine so as to save the waste materials during cutting by the saw blade. The cold extrusion type cutting mode is a cutting mode of cutting off the steel bars by utilizing two alloy blades which are tightly attached and do relative motion and utilizing shearing force, the specific structure of the cold extrusion type cutting mode is shown in figures 1 and 2, the cold extrusion type cutting mode comprises a movable cutter head 1 and a fixed cutter head 2, and the two cutter heads are respectively provided with a mutually adaptive groove 2 so as to fully contact the outline of the steel bars before cutting off the steel bars and reduce the cutting deformation. The structure of the steel bar bending swing mechanism can be seen, when the steel bar is sheared, the steel bar can generate certain bending swing in the opposite direction to the stress by taking the cut part as the center, the bending swing has great potential safety hazard of flying due to great shearing force, and the bending swing can also cause the flatness of the cut of the steel bar to be poor, thereby influencing the production quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a produce bar cutter tool bit and bar cutter that finished product quality is high and the security is high is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a bar cutter tool bit, includes the tool bit base member and sets up the tool bit movable block in type groove, tool bit base member and tool bit movable block swing joint, and the opening orientation in type groove is the same with the direction of motion of tool bit movable block, and tool bit movable block rotates through the clamping jaw axle and is connected with the clamping jaw, and the orientation of clamping jaw axle is unanimous with the trend in type groove, and the clamping jaw has stalk portion and claw portion, claw portion is located the place ahead of type groove opening orientation, and the stalk portion makes the claw portion rotate towards type groove when moving along tool bit movable block direction of.

Further: the tool bit base member passes through spout and tool bit movable block sliding connection, and the direction of spout is the same with the direction of motion of tool bit base member, and the tool bit base member has the contact surface towards tool bit base member direction of motion, the stalk portion with the contact surface butt.

Further: the tool bit base body is fixedly connected with a stop pin, and the stop pin is positioned on one side, far away from the contact surface, of the handle part.

Further: when the clamping jaw is in the clamping state, the handle part is abutted with the stop pin.

Further: a spring for driving the tool bit moving block to move towards the tool bit base body is arranged between the tool bit base body and the tool bit moving block.

Further: the tool bit base body is provided with a stop block, the tool bit moving block is provided with a convex block matched with the stop block, and the stop block is positioned in front of the convex block when observed in the moving direction of the tool bit base body.

Further: the tool bit movable block is provided with clamping jaws at the positions on the two sides of the groove.

Further: the tool bit base body is rotationally connected with the tool bit moving block through a hinged shaft, and the hinged shaft and the clamping jaw shaft 13 are respectively positioned on two sides of the groove.

A steel bar cutting machine comprises the steel bar cutting machine tool bit.

Further: also included is a power device that provides a shear force, the handle being driven by the power device.

By adopting the technical scheme, the utility model has the technical effects that the cutter head of the steel bar cutting machine is provided, the cutter head clamps the steel bar to be cut by using the clamping jaw, so that the cut section of the steel bar is neat and no splash injury occurs, and the steel bar cutting machine using the cutter head has high product quality and high safety; and this tool bit simple structure, need not to add other power equipment for its clamping device, be favorable to reforming transform current equipment, be suitable for and promote on a large scale.

Drawings

FIG. 1 is a front view of a cutter head of a conventional bar cutter;

FIG. 2 is a right side view of a cutter head of a conventional bar cutter;

FIG. 3 is a front view of the cutter head of embodiment 1 of the present invention in an open state;

fig. 4 is a front view of the cutter head of embodiment 1 of the present invention in a clamped state;

fig. 5 is a front view showing the structure of a cutter head according to embodiment 2 of the present invention in a clamped state;

wherein, 1-movable tool bit, 2-shaped groove, 3-fixed tool bit, 4-tool bit base body, 5-spring, 6-tool bit movable block, 7-convex block, 8-stop block, 9-contact surface, 10-stop pin, 11-handle part, 12-claw part, 13-gripper jaw shaft, 14-gripper jaw, 15-sliding groove, 16-power device, 17-handle part shaft and 18-articulated shaft.

Detailed Description

It should be noted that, the utility model discloses a tool bit mainly regards it as movable tool bit 1 to go on when discussing, but according to the mutual action principle of power, obviously the tool bit of each embodiment also can regard as fixed tool bit 2 to use completely, as long as the bar cutter has used and has accomplished the shearing at two tool bits of doing relative motion, the tool bit of this embodiment alright use in two tool bits of two tool bits or both are whole, only need to wherein move, quiet part simply exchange the motion relation can each other. Thus, references to "movement" of the cutter head in the following discussion are in fact intended to mean "relative movement"; and the cutter head in question is "driven" by the power means, which can be regarded as either being directly driven by the power means or being moved relatively by the power means. In addition, the terms of orientation in the following discussion, such as "up, down, left, right, longitudinal, transverse" and the like, are all in terms of the coordinate system shown in the front view of each embodiment, and do not represent the orientation of the present tool bit in actual use, for example, when the present tool bit is used upside down, the "up and down" relationship in the text should be mapped.

Example 1

As shown in fig. 3, which reflects the configuration of the tool head of the present embodiment in its inoperative condition, i.e., with jaws 14 open. Specifically, the device comprises a tool bit base body 4 and a tool bit movable block 6; the cutter head base body 4 of the embodiment is connected to a hydraulic cylinder which generates cutting power of the steel bar cutting machine, a sliding groove 15 is formed in the cutter head base body 4, the cutter head moving block 6 slides in the sliding groove 15, and the guide direction of the sliding groove 15 is the same as the moving direction of the cutter head base body 4. The tool bit moving block 6 is provided with the profiled groove 2 as a component for playing a shearing role, so that the opening of the profiled groove 2 faces the same direction as the moving direction of the tool bit moving block 6 (the moving direction is the direction in which the tool bit component moves from a non-working state to a working state, namely the moving direction in which the tool bit component moves from a non-shearing position to a shearing position), and for this embodiment, the same direction as the moving direction of the tool bit base body 4 is also equivalent to the same direction as the moving direction of the tool bit, but it should be noted that, in consideration of prolonging the service life of the tool bit moving block 6 and reducing the cost, the tool bit moving block 6 can be further divided into a main body part and a profiled groove part, which are detachably connected, so as to replace the profiled groove part which is easily worn in time, and the main body part; however, this section does not relate to the invention of the present invention and is a matter of routine and will not be described in detail here.

The main characteristics of this embodiment tool bit are: a jaw 14 is rotatably connected to the tool bit motion block 6 via a jaw shaft 13, and the jaw 14 has a shank 11 and a jaw 12. The claw 12 is used for clamping the steel bar to be cut and is positioned below the profiled groove 2, in other words, the claw 12 is positioned in front of the opening of the profiled groove 2, and the inner surface of the claw preferably has a shape profile matched with the profiled groove 2, so that the steel bar is uniformly stressed and the indentation is avoided when the steel bar is sheared. The shank 11 abuts the tool base body 4 via the contact surface 9. The contact surface 9 is a surface of the cutting insert base body 4 facing the direction of movement of the cutting insert base body 4, it is noted that the expression "the contact surface 9 faces the direction of movement of the cutting insert base body 4" does not mean that the contact surface 9 must be perpendicular to the direction of movement of the cutting insert base body 4, and the contact surface 9 having a corresponding projected area as viewed in the direction of movement of the cutting insert base body 4 can be regarded as facing the direction of movement of the cutting insert base body 4. Furthermore, the orientation of the jaw axis 13 coincides with the orientation of the profiled groove 2, i.e. the orientation of the profiled groove 2 and the orientation of the jaw axis 13 shown in fig. 3 are both perpendicular to the plane of the paper, in other words, oriented front to back, so that the jaw part 12 can be rotated towards the profiled groove 2 and then can cooperate with the profiled groove 2 to complete the clamping. It should be noted that the above-mentioned solution of pressing the contact surface 9 against the shank 11 to rotate the clamping jaw 14 is only a preferred embodiment, which is relatively simple in structure and has a strong force-bearing component to ensure a strong clamping force, but it is entirely possible to use conventional technical means such as a link mechanism or a sliding block mechanism to rotate the tool bit base body 4 to drive the shank 11, for example, a rotatable link connected to the tool bit base body 4 may be provided at the end of the shank 11 to achieve the above-mentioned driving.

When the tool bit is used, firstly the tool bit is in an opening state shown in a figure 3, then reinforcing steel bars are placed in a profiled groove 2, then a tool bit base body 4 moves downwards, the tool bit moving block 6 moves together with the tool bit moving block until an opposite tool bit (not shown in the figure) abuts against the reinforcing steel bars, the tool bit moving block 6 stops moving due to the strength of the reinforcing steel bars, then the tool bit base body 4 continues to press downwards and presses a handle part 11 of a clamping jaw 14 through a contact surface 9, the handle part 11 rotates along the moving direction of the tool bit moving block 6, the tool bit moving block stops rotating until a claw part 12 of the clamping jaw 14 abuts against the lower surface of the reinforcing steel bars, at the moment, a clamping state shown in the figure 4, namely a working state is formed, then the clamping jaw 14 cannot continue to rotate, so that the relative movement between the tool bit moving block 6 and the tool bit base body 4 is stopped, all parts of the tool bit are kept fixed with each other, until the shearing strength of the steel bar is broken through to finish shearing.

This tool bit makes the position of reinforcing bar when cuting can be fixed through setting up clamping jaw 14, has prevented the risk of splashing to make the reinforcing bar remain straight line gesture throughout at the shearing in-process, prevent crooked wobbling emergence, make the finished product incision parallel and level more regular, the quality can promote. In addition, the clamping force of this tool bit comes from the cutting-off force of bar cutter completely, compares in the scheme that uses other power supplies to accomplish the centre gripping, and this scheme has stopped to use the unexpected turn-off phenomenon of centre gripping power that other power supplies probably produced in the course of the work, has prevented because of the unexpected safe problem and the quality problem that lack and produce of centre gripping power, has improved the operational reliability of bar cutter. And because the cutting power of the steel bar cutting machine is strong, the clamping force of the cutter head is completely taken from the power, so that the clamping force is strong and stable, and the condition that parts fly or quality defects are generated due to insufficient clamping force possibly existing in other schemes is avoided. In addition, the clamping force of the cutter head only originates from the original self power of the steel bar cutting machine, other power devices do not need to be additionally arranged, and the whole structure is simple and compact, so that the existing equipment is easily modified, and the wide-range popularization and the popularization are facilitated.

In addition to the above basic solution, the cutting head of the present embodiment further includes a spring 5 abutting against the cutting head moving block 6 at the bottom of the sliding slot 15, so that the cutting head can always keep the clamping jaw 14 open when not in operation, and the operation is convenient. Of course, if the bit is properly positioned and the friction of the relevant parts is small, the clamping jaws 14 can be kept normally open by the self-gravity of the bit motion block 6.

In addition, in order to prevent the tool bit moving block 6 from falling off the sliding groove 15, a stop block 8 can be arranged in the sliding groove 15, a convex block 7 is arranged on the tool bit moving block 6, and the maximum displacement of the tool bit moving block 6 is limited through the matching of the stop block 8 and the convex block 7.

In addition, as shown in fig. 3, since the clamping jaw 14 of the embodiment specifically adopts a structure that the jaw part 12 and the handle part 11 are respectively positioned at two sides of the clamping jaw shaft 13 and are like a seesaw, if the handle part 11 is too long, the clamping jaw 14 cannot be kept in a normally open state through self gravity, at this time, the stop pin 10 can be arranged below the handle part 11, and the stop pin 10 is fixedly connected with the tool bit base body 4, so that the handle part 11 can be always limited in a space between the stop pin 10 and the contact surface 9, and the clamping jaw 14 is opened when the tool bit moving block 6 moves downwards relatively. It is of course also possible to provide a torsion spring at the jaw axis 13 to accomplish the self-opening of the jaws 14. In addition, the stop pin 10 may also perform another function in some cases, namely, to share the stress of the steel bar to be cut to prevent the indentation. Since the cutting force of the steel bar cutting machine is large, if the steel bar is soft and the contact surface between the inner surface of the claw portion 12 and the steel bar is small, indentation may be generated on the lower surface of the steel bar, which affects the quality of the product. As shown in fig. 4, the stop pin 10 may be disposed below the handle 11 after the clamping jaw 14 reaches the predetermined clamping position, and at this time, the stop pin 10 may prevent the clamping jaw 14 from further rotating, so as to share the stress on the lower surface of the steel bar and prevent the occurrence of indentation.

In addition, for the tool bit of the embodiment, in order to make the stress on the tool bit base body 4, the tool bit moving block 6 and the steel bar more balanced, the clamping jaws 14 are preferably arranged on the left side and the right side of the tool bit moving block 6, so that the service life of the equipment can be prolonged, and the product quality can be improved.

Finally, although the jaw shaft 13 and the stop pin 10 shown in fig. 3 and 4 are cantilever beam structures, it is entirely possible to provide a support member fixedly connected to the bit base body 4 on the side facing the paper to eliminate the undesirable stress of the cantilever beam, and in fact, fig. 3 and 4 show a sectional structure to some extent, this embodiment is only for the sake of clarity of the structural features of its respective parts, and is not made into a strictly sectional view with hatching, and the skilled person can fully complement other obvious parts not shown according to the prior art.

Example 2

As shown in fig. 5, one of the most important differences between the present embodiment and the previous embodiment is that the cutter head base body 4 is rotatably connected with one end of the cutter head moving block 6 through the hinge shaft 18, and the cutter head base body 4 of the present embodiment is not mounted on a hydraulic cylinder (corresponding to the power device 16 indicated in fig. 5) for generating cut-off power, but is relatively statically fixed, in other words, the cutter head base body 4 is fixed with the fixed cutter head 2 not shown in the figure. In the same way as the previous embodiment, a clamping jaw 14 is rotatably connected to the other end of the tool bit moving block 6 through a clamping jaw shaft 13, the clamping jaw 14 is provided with a handle part 11 and a jaw part 12, and the jaw part 12 is matched with the profiled groove 2 on the tool bit moving block 6 to clamp the reinforcing steel bar. Another difference is that the shank 11 of the present embodiment is directly connected to and driven by a hydraulic cylinder as the power unit 16 via the shank shaft 17, rather than the previous embodiment being driven by an indirect connection of the cutter head base body 4 to the hydraulic cylinder. Obviously, the hydraulic cylinder of this embodiment should also take an articulated form at its upper end in order to make a suitable slight inclination when the cutter head is swung in its entirety.

It should be noted that, since the tool bit motion block 6 of the present embodiment is circularly oscillated, the opening of the profiled groove 2 should be oriented in the same tangential direction of the circular motion of the tool bit motion block 6, in other words, the motion direction of the tool bit motion block 6 in the present embodiment refers to the tangential direction of the circular motion. Furthermore, although the jaws 14 of the present embodiment are normally open by gravity, the addition of springs in corresponding locations to better perform this function, particularly when the present tool bit is used upside down or in landscape orientation, is not precluded. In addition, although the present embodiment shows the jaw 14 as preventing further rotation of the jaw 14 by fully gripping the reinforcing bar with the inner surface of the jaw 12, to prevent indentation, the jaw 14 may be prevented from further rotation by engaging the upper surface of the jaw 12 with the lower surface of the bit runner 6 when the jaw 14 is in the predetermined position.

When the cutter head of the embodiment is used, compared with the previous embodiment, the cutting is not completed through vertical up-and-down relative movement, but is completed through swinging; the structure is simpler than the previous embodiment. And the clamping jaw 14 is also used for fixedly clamping the steel bar to be cut in the working process, so that the realized technical effect is basically the same as that of the embodiment 1, and the description is omitted.

Finally, it is emphasized that the above-described embodiments are merely some, but not all embodiments of the invention, and the specific embodiments described herein are merely illustrative of the invention and do not limit the claims of the invention. Based on the embodiments of the present invention, any obvious changes made by those skilled in the art under the design idea of the present invention are all within the protection scope of the present invention.

Claims (10)

1. The utility model provides a bar cutter tool bit which characterized in that: including tool bit base member (4) and tool bit movable block (6) of seting up type groove (2), tool bit base member (4) and tool bit movable block (6) swing joint, the opening orientation in type groove (2) is the same with the direction of motion of tool bit movable block (6), tool bit movable block (6) are rotated through clamping jaw axle (13) and are connected with clamping jaw (14), the orientation of clamping jaw axle (13) is unanimous with the trend in type groove (2), clamping jaw (14) have stalk portion (11) and claw portion (12), claw portion (12) are located the place ahead of type groove (2) opening orientation, and stalk portion (11) make claw portion (12) rotate towards type groove (2) when moving along tool bit movable block (6) direction of motion.

2. The cutter head of a steel bar cutting machine according to claim 1, wherein: tool bit base member (4) are through spout (15) and tool bit movable block (6) sliding connection, and the direction of spout (15) is the same with the direction of motion of tool bit base member (4), and tool bit base member (4) have towards the contact surface (9) of tool bit base member (4) direction of motion, stalk portion (11) with contact surface (9) butt.

3. The cutter head of a steel bar cutting machine according to claim 2, wherein: the tool bit base body (4) is fixedly connected with a stop pin (10), and the stop pin (10) is located on one side, far away from the contact surface (9), of the handle portion (11).

4. A cutter head for a steel bar cutting machine according to claim 3, wherein: when the clamping jaw (14) is in a clamped state, the shank (11) abuts against the stop pin (10).

5. The cutter head of a steel bar cutting machine according to claim 2, wherein: a spring (5) for driving the tool bit moving block (6) to move towards the moving direction of the tool bit base body (4) is arranged between the tool bit base body (4) and the tool bit moving block (6).

6. The cutter head of a steel bar cutting machine according to claim 2, wherein: a stop block (8) is arranged on the tool bit base body (4), a convex block (7) matched with the stop block (8) is arranged on the tool bit moving block (6), and the stop block (8) is positioned in front of the convex block (7) when the tool bit base body (4) is observed in the moving direction.

7. The cutter head of a steel bar cutting machine according to claim 2, wherein: the tool bit moving block (6) is provided with clamping jaws (14) at the positions of two sides of the profiled groove (2).

8. The cutter head of a steel bar cutting machine according to claim 1, wherein: the tool bit base body (4) is rotatably connected with the tool bit moving block (6) through a hinge shaft (18), and the hinge shaft (18) and the clamping jaw shaft (13) are respectively positioned on two sides of the groove (2).

9. The utility model provides a bar cutter which characterized in that: comprising a cutter head for steel bars according to any of claims 1 to 8.

10. A bar cutter according to claim 9, wherein: further comprising a power device (16) providing a shear force, the shank (11) being driven by the power device (16).

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