A delayed reset resistance device for a horizontal shearing machine

Abstract

The invention discloses a delayed reset resistance device for a horizontal shearing machine, which can realize delayed movement of a resistance rod by means of a lever system, a wedge block, a resistance spring and a resistance rod. The delayed movement of the resistance rod can not only provide a material unloading space for the unloading of the sheared material, but also provide effective support for the unloading of the sheared material, thereby preventing the material from being sheared unevenly due to lack of support during shearing.

Description

Technical Field

[0001] The invention relates to the field of cutting processing, and in particular to a delayed reset resistance device for a horizontal shearing machine. Background Art

[0002] The horizontal shearing machines currently available on the market include a fixed blade fixed to the shearing seat and a movable blade fixed to the shearing arm, and the materials are sheared by the cooperation of the movable blade and the fixed blade. In the actual shearing process, since the movable blade and the fixed blade are not completely fitted and seamless, and the clamping mechanism is likely to drag the materials as the movable shearing blade moves when squeezing the materials and shearing, and the ends of the sheared materials are suspended due to lack of support, the cut surface of the sheared materials has poor flatness and large slope, which is difficult to meet the process requirements. Summary of the invention

[0003] In order to solve the defects and shortcomings existing in the above-mentioned prior art, the present invention proposes a delayed reset resistance device for a horizontal shearing machine, which overcomes the technical problem of uneven cross-section of the sheared material, reduces the material inclination during shearing, and can greatly improve the workpiece yield. The delayed reset resistance device can also provide a suitable feeding space for the material, provide effective support and clamping for the sheared material, and facilitate the subsequent shearing process.

[0004] The technical solution of the present invention is:

[0005] A delayed reset resistance device for a horizontal shearing machine comprises a stationary blade, an active blade, a shearing transmission shaft, a resistance rod, a wedge block and a resistance spring, wherein the stationary blade and the active blade are respectively mounted on a fixed blade holder and a movable blade holder, the movable blade holder is mounted on the shearing transmission shaft, the shearing transmission shaft can drive the wedge block to fall or rise when moving, the resistance rod is mounted on one side of the fixed blade holder, a resistance spring is mounted on the resistance rod, the resistance spring pushes the resistance rod to form radial support for the sheared bar material, the wedge block can hinder the extension movement of the resistance spring after it falls, and has no effect on the movement of the resistance spring after it rises.

[0006] Furthermore, when the movable knife holder moves toward the fixed knife holder, the shear transmission shaft can drive the wedge block to fall; when the movable knife holder moves away from the fixed knife holder, the shear transmission shaft can drive the wedge block to rise.

[0007] Furthermore, the resistance spring is sleeved on a spring shaft, the spring shaft is fixed on a shearing machine base, and the resistance spring is always in a compressed state.

[0008] Furthermore, one side of the resistance spring is connected to one side of the flange chassis, the other side of the flange chassis is connected to the resistance rod, and the other side of the resistance spring is provided with a screwing nut, which is used to adjust the compression amount of the resistance spring.

[0009] Furthermore, when no shearing is performed, the flange chassis is in close contact with the outer end face of the machine body; after the wedge block falls and is located between the flange chassis and the outer end face of the machine body, the wedge block contacts the flange chassis to prevent the extension movement of the resistance spring, and the flange chassis cannot return to its initial position in close contact with the outer end face of the machine body; after the wedge block is lifted, the wedge block does not contact the flange chassis, does not affect the movement of the resistance spring, and the flange chassis can return to its initial position in close contact with the outer end face of the machine body.

[0010] Furthermore, a push plate assembly is connected to the shear transmission shaft, and the push plate assembly reciprocates with the shear transmission shaft. The push plate assembly controls the falling and lifting of the wedge block through a lever system, and the lever system includes a V-shaped lever, a return spring and a wedge block lever. The wedge block is fixed at one end of the wedge block lever, and the other end of the wedge block lever is fixed with a return spring. When the push plate assembly pushes one end of the V-shaped lever to move, the other end of the V-shaped lever compresses the return spring of the wedge block lever, and the wedge block lever drives the wedge block to lift; when the push plate assembly does not contact the V-shaped lever, the other end of the V-shaped lever does not compress the return spring of the wedge block lever, and the wedge block is in a falling state.

[0011] Further, the supporting shafts of the wedge lever and the V-shaped lever are fixed on the horizontal machine tool.

[0012] Furthermore, the pushing stroke of the shearing transmission shaft starts from the time when the shearing transmission shaft drives the push plate assembly to contact the V-shaped lever, and the stroke from the time when the V-shaped lever is pushed to lift the wedge block is the pushing stroke of the shearing transmission shaft; the shearing stroke of the shearing transmission shaft starts from the time when the shearing transmission shaft drives the active shearing blade to contact the sheared material, and the stroke from the time when the shearing is completed is the shearing stroke of the shearing transmission shaft; the pushing stroke distance of the shearing transmission shaft is less than the shearing stroke distance of the shearing transmission shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting the resistance rod, the resistance spring can form a radial support force for the sheared bar, thereby improving the cross-sectional flatness of the bar after shearing.

[0015] 2. The lifting or falling of the wedge block realizes the delayed movement function of the resistance rod, which not only ensures the smooth unloading process, but also provides support for the sheared material to ensure the smooth unloading process. When the active blade moves toward the fixed blade, whether the wedge block is in a falling or lifting state, it will not affect the movement process of the resistance spring being compressed. The resistance spring is always in a compressed state and can provide support for the sheared material. After the shearing is completed, when the shearing drive shaft drives the active tool holder to retreat, the compressed resistance spring will also push the resistance rod to move back together. The resistance rod and the shearing drive shaft are in a synchronous motion state at this time; when the flange chassis contacts the falling wedge block, the wedge block can prevent the compressed resistance spring from further returning, resulting in the movement of the resistance rod and the shearing drive shaft no longer being synchronized, and the space between the resistance rod and the active blade gradually increases, thereby reserving enough space for the unloading of the sheared material to ensure the smooth unloading. After unloading is completed, when the shear drive shaft further retreats and returns, the V-shaped lever is pushed by the push plate assembly, and then the wedge block is lifted up under the action of the wedge lever. At this time, the compressed resistance spring is no longer restricted by the wedge block and can continue to push the resistance rod to move. The flange chassis can return to its initial position in contact with the shear machine base. The resistance rod supports the sheared bar material, plays a fixing role, and continues to provide support for the subsequent shearing of the sheared bar material.

[0016] 3. By arranging a push plate assembly on the shear transmission shaft, the push plate assembly and the wedge block are linked in the form of a lever system, so that the movement of the shear transmission shaft can control the lifting or falling of the wedge block, thereby realizing the delayed movement function of the resistance rod. The structural design is simple and practical.

[0017] 4. By setting the tightening nut, the compression amount of the resistance spring can be adjusted, and then the supporting force provided by the resistance rod during the shearing process can be adjusted according to the shear force requirements.

[0018] 5. The pushing stroke distance of the shearing drive shaft is smaller than the shearing stroke distance of the shearing drive shaft. According to the size of the bar to be sheared, by adjusting the difference between the pushing stroke distance and the shearing stroke distance, a suitable unloading space can be provided for the unloading process of the sheared material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0020] Figure 1 The present invention is a front view of a delayed reset resistance device for a horizontal shearing machine.

[0021] Figure 1Among them, 1 is the resistance rod, 2 is the flange chassis, 3 is the resistance spring, 4 is the spring shaft, 5 is the turning nut, 6 is the wedge, 7 is the wedge lever, 8 is the wedge lever supporting shaft, 9 is the return spring, 10 is the V-shaped lever head end, 11 is the V-shaped lever supporting shaft, 12 is the V-shaped lever tail end, 13 is the push plate assembly, 14 is the shear transmission shaft, and 15 is the active blade. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of this application.

[0023] Figure 1 It is a front view of a delayed reset resistance device of a horizontal shearing machine disclosed in the present invention, comprising a static blade, an active blade 15, a shearing transmission shaft 14, a resistance rod 1, a wedge block 6 and a resistance spring 3. The static blade and the active blade 15 are respectively mounted on a fixed tool holder and a movable tool holder, the movable tool holder is mounted on the shearing transmission shaft 14, the shearing transmission shaft 14 can drive the wedge block 6 to fall or rise when moving, the resistance rod 1 is mounted on one side of the fixed tool holder, a resistance spring 3 is mounted on the resistance rod 1, the resistance spring 3 pushes the resistance rod 1 to form radial support for the sheared bar material, the wedge block 6 can hinder the extension movement of the resistance spring 3 after it falls, and has no effect on the movement of the resistance spring 3 after the wedge block 6 is lifted.

[0024] Furthermore, the resistance spring 3 is sleeved on the spring shaft 4, and the spring shaft 4 is fixed on the body of the horizontal shearing machine. The tail end of the resistance rod 1 is connected to the flange chassis 2, and the other end is used to contact the sheared bar material to provide support for the sheared bar material. At the same time, the flange chassis 2 is also connected to one end of the resistance spring 3, and the other end of the resistance spring 3 is connected to the screw nut 5. By adjusting the screw nut 5, the deformation of the resistance spring 3 can be changed, and then the thrust applied by the resistance spring 3 on the resistance rod can be adjusted, and the support force of the resistance spring 3 on the sheared bar material can be changed.

[0025] The shear transmission shaft 14 can drive the wedge 6 to fall or rise when in motion, which is mainly accomplished by a lever system. The lever system specifically includes a wedge lever 7, a V-shaped lever and a push plate assembly 13. The push plate assembly 13 is connected to the shear transmission shaft 14. The movement of the shear transmission shaft 14 can move the movable tool holder toward the fixed tool holder to perform the shear feed process; it can also move the movable tool holder away from the fixed tool holder to perform the backward and retract process. When the shear transmission shaft 14 is performing the shear feed process, the push plate assembly 13 moves to the left, and when the shear transmission shaft 14 is performing the backward and retract process, the push plate assembly 13 moves to the right.

[0026] One end of the wedge lever 7 is connected to the wedge 6, and the other end of the wedge lever 7 is connected to the upper part of the reset spring 9. The lower part of the reset spring 9 is fixed to the shearing machine body, and the support shaft 8 of the wedge lever 7 is also fixed to the shearing machine body. The V-shaped lever support shaft 11 is fixed to the shearing machine body. After the push plate assembly 13 contacts the V-shaped lever tail end 12, it continues to move to the right, which can push the V-shaped lever tail end 12 to rise. Under the action of the lever, the V-shaped lever head end 10 drops, causing the reset spring 9 of the wedge lever 7 to be compressed and the wedge 6 of the wedge lever 7 to be lifted. When the push plate assembly 13 moves to the left, the push plate assembly 13 gradually loses contact with the V-shaped lever tail end 12, and the downward pressure of the V-shaped lever head end 10 on the return spring 9 is reduced until the push plate assembly 13 completely loses contact with the V-shaped lever tail end 12, and the V-shaped lever tail end 12 drops back to the initial position, the return spring 9 rebounds and resets, and raises the V-shaped lever head end 10, and the wedge block 6 is in a falling state.

[0027] The specific working principle of the delayed reset resistance device is:

[0028] When the material falls into place, the wedge block 6 is in a lifted state, the flange chassis 2 is in an initial position close to the outer end surface of the machine body, and the resistance rod 1 supports the end of the material under the spring force of the resistance spring 3, and the resistance rod 1 always maintains its supporting function during the entire process of shearing the material.

[0029] When shearing materials, the shearing transmission shaft 14 drives the active blade 15 to move to the left, and the shearing feed process is performed. The push plate assembly 13 moves synchronously with the shearing transmission shaft, causing the push plate assembly 13 to gradually break contact with the V-shaped lever tail end 12, lose support for the V-shaped lever tail end 12, and the compressed return spring 9 rebounds and resets. Under the action of the wedge lever 7, the wedge 6 falls. In order to ensure the smooth progress of shearing, the resistance rod 1 needs to provide sufficient support for the sheared material. Therefore, when shearing, the resistance spring 3 will be further compressed, and the flange chassis 2 that moves synchronously with the resistance spring 3 will also move to the left, so that a gap is formed between the flange chassis 2 and the outer end face of the body, providing space for the wedge 6 to fall, and then the wedge 6 can prevent the flange chassis from returning to the initial position close to the outer end face of the body.

[0030] When the material is sheared and broken, the resistance rod 1, flange chassis 2 and push plate assembly 13 are respectively in position A, position B and position C; the wedge block 6 is in a falling state, located between the flange chassis and the outer end surface of the machine body. Then, as the active blade 15 retreats to the right and starts shearing and retracting, the resistance rod 1, flange chassis 2 and push plate assembly 13 also move right together under the action of the resistance spring.

[0031] It should be noted that the shearing drive shaft 14 drives the push plate assembly 13 to contact the V-shaped lever until the V-shaped lever is pushed to lift the wedge 6, which is the pushing stroke of the shearing drive shaft; the shearing drive shaft 14 drives the active blade to contact the sheared material until the shearing process is completed, which is the shearing stroke of the shearing drive shaft. The pushing stroke distance of the shearing drive shaft is less than the shearing stroke distance of the shearing drive shaft. In this way, it can be ensured that when the shearing drive shaft 14 is shearing and retracting, the push plate assembly 13 does not immediately start to contact the V-shaped lever, so that there is a certain delay in lifting the wedge 6, thereby reserving time and space for the sheared material to enter the material port, playing the role of reset delay.

[0032] Specifically, during the shearing and retracting process of the shearing transmission shaft 14, when the resistance rod 1, the flange chassis 2 and the push plate assembly 13 move to the position A' and the position B' respectively, the wedge block 6 is still in the falling position, preventing the resistance rod 1 and the flange chassis 2 from returning to the initial position. When the shearing transmission shaft 14 continues to perform the shearing and retracting process, the active blade 15 continues to move right, while the resistance rod 1 and the flange chassis 2 cannot continue to move right due to the obstruction of the wedge block 6. At this time, the resistance rod 1 and the active blade 15 cannot move right synchronously, so that a gap can be gradually formed between the resistance rod 1 and the active blade 15, so that the feed port is in an open state, and the sheared material can enter and fall into place.

[0033] After the sheared material falls into place, the shearing and retracting process continues, the active blade 15 continues to move right, the push plate assembly 13 begins to contact the tail end 12 of the V-shaped lever, and pushes the tail end 12 of the V-shaped lever backward and upward. When the push plate assembly 13 reaches position C', the front end 10 of the V-shaped lever presses down the return spring 9, and under the action of the wedge lever 7, the wedge 6 is lifted.

[0034] After the wedge block 6 is lifted, the obstruction to the flange chassis 2 disappears. Under the action of the resistance spring, the flange chassis 2 and the resistance rod 1 return to their initial position, and the resistance rod 1 moves to the right and rests against the end of the sheared material, thereby providing support for the sheared material.

[0035] The above contents are further detailed descriptions of the present invention in combination with specific / preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can also make several substitutions or modifications to these described embodiments without departing from the concept of the present invention, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention.

Claims

1. A delayed reset resistance device for a horizontal shearing machine, comprising a stationary blade, an active blade, a shearing transmission shaft, a resistance rod, a wedge block and a resistance spring, characterized in that: The stationary blade and the active blade are respectively mounted on the fixed blade holder and the movable blade holder, and the movable blade holder is mounted on the shear transmission shaft. The shear transmission shaft is connected with a push plate assembly, which follows the shear transmission shaft to make reciprocating motion. The push plate assembly controls the falling and lifting of the wedge block through a lever system. The shear transmission shaft can drive the wedge block to fall or lift when it moves. The resistance rod is mounted on one side of the fixed blade holder, and a resistance spring is mounted on the resistance rod. The resistance spring pushes the resistance rod to form radial support for the sheared bar material. After the wedge block falls, it can hinder the elongation movement of the resistance spring, and the movement of the resistance spring is not affected after the wedge block is lifted; the stroke that the shear transmission shaft drives the push plate assembly to lift the wedge block is the pushing stroke of the shear transmission shaft; the stroke from the shear transmission shaft driving the active blade to contact with the sheared material to the completion of shearing is the shearing stroke of the shear transmission shaft; the pushing stroke distance of the shear transmission shaft is less than the shearing stroke distance of the shear transmission shaft.

2. A delayed reset resistance device for a horizontal shearing machine according to claim 1, characterized in that: The resistance spring is sleeved on a spring shaft, and the spring shaft is fixed on a shearing machine base, and the resistance spring is always in a compressed state.

3. A delayed reset resistance device for a horizontal shearing machine according to claim 1, characterized in that: One side of the resistance spring is connected to one side of the flange chassis, the other side of the flange chassis is connected to the resistance rod, and the other side of the resistance spring is provided with a screwing nut, and the screwing nut is used to adjust the compression amount of the resistance spring.

4. A delayed reset resistance device for a horizontal shearing machine according to claim 1, characterized in that: When no shearing is performed, the flange chassis is in close contact with the outer end face of the machine body; after the wedge block falls and is located between the flange chassis and the outer end face of the machine body, the wedge block contacts the flange chassis to prevent the extension movement of the resistance spring, and the flange chassis cannot return to its initial position in close contact with the outer end face of the machine body; after the wedge block is lifted, the wedge block does not contact the flange chassis, does not affect the movement of the resistance spring, and the flange chassis can return to its initial position in close contact with the outer end face of the machine body.

5. The delayed reset resistance device for a horizontal shearing machine according to claim 1, characterized in that: The lever system includes a V-shaped lever, a return spring and a wedge lever, wherein the wedge is fixed at one end of the wedge lever, and the other end of the wedge lever is fixed with a return spring. When the push plate assembly pushes one end of the V-shaped lever to move, the other end of the V-shaped lever compresses the return spring of the wedge lever, and the wedge lever drives the wedge to lift; when the push plate assembly does not contact the V-shaped lever, the other end of the V-shaped lever does not compress the return spring of the wedge lever, and the wedge is in a falling state.

6. A delayed reset resistance device for a horizontal shearing machine according to claim 5, characterized in that: The supporting shafts of the wedge lever and the V-shaped lever are fixed on the horizontal machine tool.

7. A delayed reset resistance device for a horizontal shearing machine according to claim 5, characterized in that: The pushing stroke of the shear transmission shaft starts from the moment the shear transmission shaft drives the push plate assembly to contact the V-shaped lever, and ends when the V-shaped lever is pushed to lift the wedge block; the shearing stroke of the shear transmission shaft starts from the moment the shear transmission shaft drives the active blade to contact the sheared material, and ends when the shearing is completed; the pushing stroke distance of the shear transmission shaft is less than the shearing stroke distance of the shear transmission shaft.

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