WO2023226278A1

WO2023226278A1 - Swingable residual shear

Info

Publication number: WO2023226278A1
Application number: PCT/CN2022/124782
Authority: WO
Inventors: 温怡彰; 仇家强; 潘伟斌; 彭振林; 黄裕聪
Original assignee: 佛山市恒力泰机械有限公司
Priority date: 2022-05-23
Filing date: 2022-10-12
Publication date: 2023-11-30
Also published as: CN114871290A

Abstract

A swingable residual shear, comprising a shear rack (10), one side of the shear rack (10) being provided with a shearing surface (11); a shear head (20), the shear head (20) being provided with a blade (21), the shear head (20) being rotatably mounted on the side of the shear head (20) away from the shearing surface (11) by means of a rotary shaft (22), and the center of the rotary shaft (22) and the center of the shear head (20) being eccentrically arranged, so that under the effect of its own gravity, the shear head (20) rotates away from the shearing surface (11); and a guiding mechanism, the guiding mechanism being used for guiding the rotation of the shear head (20) close to or away from the shearing surface (11), and the blade (21) being used for being located on the shearing surface (11) after the shear head (20) rotates close to the shearing surface (11).

Description

A swingable pressure shear

Technical field

The invention relates to the technical field of extrusion press equipment, and in particular to a swing-type press shear.

Background technique

At present, the extrusion press is the main equipment for the production of light alloy (aluminum alloy, copper alloy and magnesium alloy) tubes, rods and profiles. It mainly extrudes the hot-melted light alloy in the extrusion barrel to The forming die is formed at the forming die and then extruded through the forming port. It is an important industrial process.

The mold base of the forming die on the extruder is generally fastened to the beam of the extruder through bolts and other structures and cannot be adjusted, and there will be a gap between the extrusion barrel and the forming die, so it is easy to cause melting during the forming process. Material retention will affect the molding of the next product, so a residual shear will be set on the extruder to shear the remaining material at the exit of the forming die after extrusion.

However, the residual shear can only move straight up and down. When the residual material is returned after shearing, the scissor blades will strain the material surface on the shearing surface of the mold. When docking with the next material rod, air will be generated. Cavities and trapped gas eventually lead to defects in profile products near the interface. If a rotating structure is used, only the driving structure is needed to drive the entire scissor frame to rotate. The scissor frame is equipped with a driving structure such as an oil cylinder. The overall structure is too heavy and will easily shake during the rotation, causing safety hazards.

Contents of the invention

In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a swing-type pressure residual shear, in which during the shearing action, the guide mechanism can drive the blade of the scissor head to be located on the shearing surface to perform normal shearing operations; When returning, the blade of the scissor head can rotate away from the shearing surface under its own gravity.

The purpose of the present invention is achieved by adopting the following technical solutions:

A swingable pressure shear, including:

A scissors holder, one side of the scissors holder has a shearing surface;

Scissor head, the scissor head is provided with a blade, the scissor head is rotatably installed on the side of the scissor head away from the shearing surface through a rotating shaft, the center of the rotating shaft is eccentrically arranged with the center of the scissor head, so as to Make the scissor head rotate away from the shearing surface under the action of its own gravity;

A guide mechanism is used to guide the scissor head to rotate closer to or away from the shearing surface, and the blade is used to be positioned on the shearing surface after the scissor head rotates close to the shearing surface.

Further, the guide mechanism includes a guide rod and a guide groove. A first guide portion is provided on the side of the guide groove close to the shearing surface. The guide rod penetrates the guide groove and can be close to or away from the guide groove. The first guide part moves, and the guide rod is used to abut against the first guide part after moving close to the first guide part, so that the scissor head rotates close to the shearing surface.

Further, the guide rod is provided with a second guide part, and the second guide part is used to slidely cooperate with the first guide part after the guide rod moves close to the first guide part, so as to guide the scissor head to approach. The shear plane rotates.

Further, the first guide part is an inner cone surface, and the second guide part is an outer cone surface; the outer diameters of the inner cone surface and the outer cone surface gradually increase from top to bottom.

Further, the first guide part is a first inclined surface, and the second guide part is a second inclined surface; both the first inclined surface and the second inclined surface are gradually inclined closer to the shearing plane from top to bottom; the guide rod Can move along its own axis.

Further, a third guide part is provided on the side of the guide groove away from the shearing surface, and the guide rod is used to move close to the third guide part after moving away from the first guide part, and is connected with the third guide part. The guide part is slidably engaged, and the third guide part is used to guide the scissor head to rotate away from the shearing surface when the guide rod is slidably engaged.

Further, the guide rod is provided with a fourth guide part for slidingly mating with the third guide part.

Further, the third guide part is a slider, and the slider is protruding on the inner wall of the guide groove away from the first guide part; the fourth guide part is provided on the guide rod away from the second guide part. The side of the guide portion; the slider is provided with a third inclined surface, and the fourth guide portion is a fourth inclined surface; both the third inclined surface and the fourth inclined surface are inclined from top to bottom gradually approaching the shearing plane.

Further, the guide mechanism includes a guide rod driving member; the guide rod driving member is provided in the scissor frame, and a connecting groove is provided in the scissor frame, and one end of the guide rod is connected to the connecting groove. The other end of the guide rod is connected to the guide rod driver in the guide groove to drive the guide rod to move.

Furthermore, the guide groove penetrates to the bottom end of the scissor head, and the bottom end of the guide rod can extend along the bottom end of the guide groove and form a striking portion.

Further, the bottom end of the scissors holder is provided with a limiting surface, and the limiting surface is used to abut the top surface of the scissor head after the scissor head rotates close to the shearing surface, so that the blade is positioned at the cutting surface. noodle.

Further, a dust cover is provided on the side of the scissor frame, and the dust cover is provided outside the limiting surface and the top end of the scissor head.

Furthermore, an air blowing channel is provided in the scissor holder, and the air blowing channel penetrates to the limiting surface and is used to introduce gas to the limiting surface.

Further, the swingable residual shear also includes a scissor frame driving member, and the scissor frame driving member is used to drive the scissor frame to move along its own axial direction.

Further, the swingable residual shear also includes a mounting bracket, the mounting bracket is provided with a positioning pin, the scissor frame is provided with a positioning slot, the positioning pin can move closer to or away from the positioning slot; The positioning pin is used to be inserted into the positioning groove after being close to the positioning groove, so that the scissor frame and the installation bracket are fixed.

Compared with the existing technology, the beneficial effects of the present invention are:

In its initial state, the guiding mechanism can guide the scissor head to rotate close to the shearing surface so that the blade of the scissor head is located on the shearing surface. When performing the shearing action, the scissor frame can be driven close to the extruder by the driving structure. The remaining material surface on the forming die moves to scrape off the remaining material on the forming die. When returning, the guide mechanism can guide the scissor head to rotate away from the shearing surface. At the same time, the scissor head can move away from the shearing surface under the action of its own gravity. The cutting surface of the scissor head can be kept separated from the shearing surface on the mold by a certain distance, and the remaining material surface on the shearing surface will not be scratched during the reset process.

Description of the drawings

Figure 1 is a schematic structural diagram of the use state of the compression shear of the present invention;

Figure 2 is a schematic structural diagram of the pressure residual shear of the present invention;

Figure 3 is a schematic structural diagram of the pressure residual shear of the present invention from another perspective;

Figure 4 is a schematic structural diagram of a usage state of the compression shear of the present invention;

Figure 5 is a schematic structural diagram of another use state of the compression shear of the present invention;

Figure 6 is a partial structural schematic diagram of the pressure residual shear of the present invention;

Figure 7 is another structural schematic diagram of the pressure residual shear of the present invention;

Figure 8 is a schematic structural diagram of a usage state of the compression shear in Figure 7;

Figure 9 is a schematic structural diagram of another usage state of the compression shear shown in Figure 7 .

In the picture: 10. Scissor holder; 11. Cutting surface; 12. Limiting surface; 13. Blowing channel; 14. Dust cover; 20. Scissor head; 21. Blade; 22. Rotating shaft; 23. Guide groove; 231. First guide part; 232. Slider; 233. Third guide part; 24. Scissor blade; 30. Guide rod; 31. Cutting part; 32. Second guide part; 321. External cone surface; 33. The fourth guide part; 40. Guide rod driving member; 50. Scissor frame driving member; 60. Installation bracket; 61. Positioning pin.

Detailed ways

Below, the present invention will be further described with reference to the accompanying drawings and specific embodiments:

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", The orientations or positional relationships indicated by "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the invention belongs. The terminology used herein in the description of the invention is for the purpose of describing specific embodiments only and is not intended to limit the invention.

Example 1,

As shown in Figures 1-6, a swingable residual shear includes a scissor frame 10, a scissor head 20 and a guide mechanism. One side of the scissor frame 10 has a shearing surface 11.

In addition, the scissor head 20 is provided with a blade 21, and the scissor head 20 can be rotatably installed on the scissor head 20 through a rotating shaft 22, and the installation position of the rotating shaft 22 of the scissor head 20 is located on the side away from the shearing surface 11. Specifically, the rotating shaft 22 is The center and the center of the scissor head 20 are arranged eccentrically. Since the shearing surface 11 and the rotating shaft 22 are respectively located on both sides of the scissor frame 10, the scissor head 20 can rotate away from the shearing surface 11 under its own action without the action of external force. In order to keep the blade 21 of the scissor head 20 away from the cutting surface 11 .

The guide mechanism can guide the scissor head 20 to rotate closer to or away from the shearing surface 11 , and the blade 21 can be positioned on the shearing surface 11 after the scissor head 20 rotates close to the shearing surface 11 .

On the basis of the above structure, by using the swingable residual shear of the present invention, in the initial state, the scissor head 20 can maintain a rotating state close to the shearing surface 11 under the guidance of the guide mechanism, so that the blade of the scissor head 20 can be 21 is located on the shear plane 11.

When shearing the remaining material, the scissor frame 10 can move downwards driven by the driving structure, and move close to the remaining material surface on the molding die of the extruder, because the blade 21 of the scissor head 20 is maintained at On the shearing surface 11, therefore during the movement, the blade 21 on the scissor head 20 can scrape off the remaining material on the forming mold.

When returning, the guide mechanism can guide the scissor head 20 to rotate away from the shearing surface 11. At the same time, the scissor head 20 can move away from the shearing surface 11 under the action of its own gravity, and the blade 21 of the scissor head 20 can be kept in contact with the forming mold. The shearing surface 11 is separated by a certain distance, and the remaining material surface on the shearing surface 11 will not be scratched during the reset process.

It should be noted that the scissor blade 24 can be fixed on the scissor head 20 through screws or other structures, and the above-mentioned blade 21 can be formed on the bottom end of the scissor blade 24. Compared with directly forming the blade 21 on the scissor head 20, The scissor blade 24 is arranged to facilitate timely replacement of the blade after wear during use. Specifically, in this embodiment, the above-mentioned guide mechanism includes a guide rod 30 and a guide groove 23. A first guide portion 231 is provided in the guide groove 23. The above-mentioned guide rod 30 is connected to the guide groove 23, and the guide rod 30 can be close to Or move away from the first guide part 231 . And the guide rod 30 is used to abut against the first guide part 231 after moving close to the first guide part 231, so that the scissor head 20 rotates close to the cutting surface 11.

Based on this structure, in order to keep the blade 21 of the scissor head 20 on the cutting surface 11 of the scissor frame 10 during the cutting operation, the guide rod 30 can be operated to move closer to the first guide portion 231 , after the guide rod 30 moves close to the first guide part 231, the first guide part 231 can receive the force provided by the guide rod 30, driving the blade 21 of the scissor head 20 to rotate close to the shearing surface 11, while the guide rod 30 moves in the guide groove Within 23 seconds, the guidance process is relatively stable.

Furthermore, a second guide portion 32 can also be provided on the guide rod 30 . The second guide portion 32 can slide and cooperate with the first guide portion 231 to guide the scissors after the guide rod 30 moves close to the first guide portion 231 . The head 20 rotates close to the shear surface 11 . That is to say, on the basis of this structure, when the blade 21 of the scissor head 20 is driven to rotate close to the shearing surface 11, the guide rod 30 can move in the guide groove 23, and the second guide portion 32 on the guide rod 30 can be close to the guide groove. When the first guide part 231 of 23 moves, the first guide part 231 can guide the scissor head 20 to rotate close to the cutting surface 11 .

One way in this embodiment is that the first guide part 231 is a first slope, and the second guide part 32 is a second slope, and both the first slope and the second slope gradually approach the shear from top to bottom. The surface 11 is inclined; the guide rod 30 can move along its own axis. Based on this structure, the first inclined surface can be provided on the side of the guide groove 23 close to the shearing surface 11. Similarly, the second inclined surface can be located between the guide rod 30 and the shearing surface 11. The side where the first bevel is close.

When performing the shearing action, the guide rod 30 can move upward, and the second inclined plane can gradually approach the first inclined plane. In the process of the second inclined plane approaching the first inclined plane, the longitudinal force can be decomposed into a transverse force, which can be applied to the first inclined plane. Inclined plane, the first inclined plane can decompose the force into longitudinal force, that is, the blade 21 of the scissor head 20 can be forced to swing upward to fit the shearing surface 11, and the scissor frame 10 is driven by the driving structure to approach the forming mold. The remaining material surface can complete the shearing action.

When returning, the guide rod 30 can move downward, and the second inclined plane can gradually move away from the first inclined plane. The guide rod 30 continues downward, the first inclined plane is separated from the second inclined plane, and the scissor head 20 can move under its own gravity. By deflecting downward, the blade 21 of the scissor head 20 can form a certain distance from the shearing surface 11 to prevent the remaining material surface of the molding die from being scratched during the return trip.

Further, a third guide portion 233 is provided in the guide groove 23, and the guide rod 30 can be used to move closer to the third guide portion 233 after moving away from the first guide portion 231, and to slidely cooperate with the third guide portion 233. The guide portion 233 can guide the scissor head 20 to rotate away from the cutting surface 11 when the guide rod 30 is slidably engaged.

On the basis of this structure, when returning, the guide rod 30 can move downward, and the guide rod 30 can move away from the first guide part 231. After being separated from the first guide part 231, the scissor head 20 loses its force. The scissor head 20 can deflect downward under its own gravity, and when the guide rod 30 continues to move downward, the guide rod 30 can press the third guide portion 233 in the guide groove 23 to push the scissor head 20 away. The shearing surface 11 swings, and the blade 21 of the scissor head 20 can form a certain distance from the shearing surface 11 to prevent the remaining material surface of the mold from being scratched during the return trip.

In this way, when returning, since the rotating shaft 22 may be stuck or insensitive, the scissor head 20 can be driven to rotate by pressing the third guide portion 233 during the downward movement of the guide rod 30 .

Furthermore, in order for the guide rod 30 to better press fit with the third guide part 233, a fourth guide part 33 may be provided on the guide rod 30, and the fourth guide part 33 and the above-mentioned second guide part 32 may be in the guiding position. The height direction of the rod 30 is distributed, that is, when the guide rod 30 moves downward, the fourth guide part 33 can be press-fitted with the third guide part 233 to guide the blade 21 of the shearing head to rotate away from the shearing surface 11. When the guide rod 30 moves upward, the second guide portion 32 of the guide rod 30 can press fit with the first guide portion 231 to guide the blade 21 of the shearing head to rotate close to the shearing surface 11 .

More specifically, the third guide part 233 is a slider 232 , and the slider 232 is protruding on the inner wall of the guide groove 23 away from the first guide part 231 ; the fourth guide part 33 is provided on the guide rod 30 away from the second guide part 32 The slider 232 is provided with a third inclined surface, and the fourth guide portion 33 is a fourth inclined surface; both the third inclined surface and the fourth inclined surface gradually slope toward the shearing plane 11 from top to bottom.

In this way, when returning, the guide rod 30 can move downward, and the fourth slope can gradually approach the third slope. The guide rod 30 continues downward, and the fourth slope and the third slope fit and slide together. Then the longitudinal force can be decomposed into a transverse force, which is applied to the third inclined surface. The third inclined surface can decompose the force into a longitudinal force, driving the blade 21 of the scissor head 20 to swing backward away from the shearing surface 11, and cooperate with the scissor head 20 The scissor head 20 deflects downward under its own gravity, and the blade 21 of the scissor head 20 can form a certain distance from the shearing surface 11 to prevent the remaining material surface of the molding die from being scratched during the return trip.

When the blade 21 of the scissor head 20 needs to be reset to the shearing surface 11, when the guide rod 30 moves upward, the guide rod 30 can move upward, and the above-mentioned fourth inclined plane is separated from the third inclined plane, and in the process of continuing upward movement, The second inclined surface can gradually approach the first inclined surface. In the process of approaching the first inclined surface, the second inclined surface can decompose the longitudinal force into a transverse force. When applied to the first inclined surface, the first inclined surface can decompose the force into a longitudinal force. , that is, the blade 21 of the scissor head 20 can be forced to swing upward to fit the cutting surface 11 .

Of course, in another embodiment, the above-mentioned first guide part 231 and the third guide part 233 can also be selected as arc-shaped bump structures, that is, when the guide rod 30 moves upward, the guide rod 30 can press against the arc. The arc surface of the bump can also decompose the force into forces in different directions to achieve rotation. The corresponding second guide part and the fourth guide part can also be realized by using corresponding structures such as inclined surfaces, arc surfaces, or tapered surfaces.

In addition, the above-mentioned guiding mechanism can also be implemented by using an abutting block and an abutting block driving member. The abutting block is arranged on the side of the scissor frame 10 away from the shearing surface 11 , and the abutting block driving member can drive the abutting block to abut against the shearing surface 11 . Leaning against the side of the scissor head 20 away from the shearing surface 11 prevents the scissor head 20 from deflecting under its own gravity, and the blade 21 of the scissor head 20 can be kept in a state of close contact with the shearing surface 11 . After the blade 21 of the scissor head 20 completes scraping off the remaining material, the abutment block driver can drive the abutment block away from the side of the scissor head 20 , that is, the force exerted on the side of the scissor head 20 away from the shearing surface 11 is removed. , the scissor head 20 can swing downward and backward under its own gravity, and the blade 21 of the scissor head 20 can form a certain distance from the shearing surface 11 .

Further, the above-mentioned guide mechanism includes a guide rod driving member 40. The above-mentioned guide rod driving member 40 is provided in the scissor frame 10, and the scissor frame 10 is provided with a connecting slot. One end of the guide rod 30 is connected to the connecting slot and is connected by The top end of the connecting groove extends out to connect with the guide rod driving member 40 , and the other end of the guide rod 30 is connected to the guide rod driving member 40 in the guide groove 23 for driving the guide rod 30 to move.

In this way, when the guide rod 30 is driven to move, the guide rod driving member 40 can drive the guide rod 30 to move up and down, and the guide rod 30 can move up and down in the connecting groove of the scissor frame 10, and the connecting groove can guide the stability of the guide rod 30. Up and down, the movement structure is more stable.

Furthermore, the guide groove 23 can also penetrate to the bottom end of the scissor head 20 , and the bottom end of the guide rod 30 can extend along the bottom end of the guide groove 23 and form a striking portion 31 .

Based on this structure, after the scissor frame 10 moves downward, it will drive the blade 21 on the scissor head 20 to scrape off the remaining material on the mold, and the scraped off residual material will adhere to the blade 21 of the scissor head 20 , therefore in this embodiment, the above-mentioned guide groove 23 can be set as a through-groove structure, that is, the bottom end of the guide rod 30 can extend from the bottom end of the scissor head 20 during the upward movement, and when the guide rod 30 moves toward After moving downward and away from the first guide part 231, the blade 21 of the scissor head 20 can swing backward under its own gravity. At the same time, the bottom punching part 31 of the guide rod 30 extends and can swing to the blade 21 behind the scissor head 20. The remaining material is knocked off, that is, the guide rod 30 can also function as a discharge rod to prevent the remaining material from adhering to the blade 21 of the scissor head 20, which is convenient for later cleaning, and there is no need to set up an additional knocking rod.

Of course, the above-mentioned punching part 31 can be formed by the end of the guide rod 30 , or can be realized by a structure such as a pad provided on the end of the guide rod 30 . In short, it can be formed by the bottom end of the guide groove 23 on the guide rod 30 The remaining material structure on the blade 21 of the scissor head 20 after being extended and knocked off can be formed into the above-mentioned striking portion 31 .

Further, referring to Figure 6, a limiting surface 12 can also be provided at the bottom end of the scissor frame 10. The limiting surface 12 can abut against the top surface of the scissor head 20 after the scissor head 20 rotates close to the cutting surface 11. So that the blade 21 is located on the shearing surface 11, that is, after the scissor head 20 rotates close to the shearing surface 11 under the guidance of the guide mechanism, the top surface of the scissor head 20 can abut against the limiting surface 12 at the bottom of the scissor frame 10 , butt against each other. In this state, the cutting surface 11 can remain parallel to the blade 21 of the scissor head 20 to prevent the scissor head 20 from protruding from the cutting surface 11, causing the blade 21 of the scissor head 20 to protrude and cause collision. damaged condition.

More specifically, a dust cover 14 is provided on the side of the scissor frame 10. The dust cover 14 is located on the limiting surface 12 and outside the top of the scissor head 20, that is, at the assembly interval between the scissor head 20 and the scissor frame 10, there is a dust cover 14. Dust cover 14, because the scissor head 20 can rotate relative to the scissor holder 10, there is an assembly gap between the two, and dust or residual materials are likely to adhere to the scissor holder 10 during use, causing the end surface of the scissor head 20 to not be in contact with the scissor holder 10. The limiting surface 12 fits well, so a dust cover 14 is provided to cover the assembly gap between the two to prevent external dust or residual materials from entering during use.

Furthermore, an air blowing channel 13 may also be provided in the scissor frame 10. The air blowing channel 13 penetrates to the limiting surface 12 and is used to introduce gas to the limiting surface 12. Similarly, since the scissor head 20 can rotate relative to the scissor frame 10 , so there is an assembly gap between the two, and dust or residual materials are easy to adhere during use, causing the end surface of the scissor head 20 to not fit well with the limiting surface 12 of the scissor holder 10, so it can be used by blowing Compressed air is introduced into the air channel 13 to the limiting surface 12. On the one hand, dust can be blown. On the other hand, since the gas is introduced into the contact position, the contact surface between the scissor head 20 and the scissor frame 10 can be ensured to be in a positive pressure state, dust, etc. It is difficult for impurities to enter and the dust-proof effect is better.

Further, the swingable residual shear also includes a scissor frame driving member 50. The scissor frame driving member 50 is used to drive the scissor frame 10 to move along its own axial direction, that is, when performing the residual material shearing action, it can be driven by the scissor frame The component 50 drives the scissor stand 10 to move downward as a whole, thereby driving the blade 21 of the scissor head 20 connected to the scissor stand 10 to perform the cutting action of the remaining material, and after the shearing action of the remaining material is completed, the scissor stand driving part 50 drives the scissors The frame 10 can be reset as a whole.

Further, the swingable residual shear also includes a mounting bracket 60. Specifically, the mounting bracket 60 is provided with a positioning pin 61, and the scissor frame 10 is provided with a positioning slot. The positioning pin 61 can move close to or away from the positioning slot; the positioning pin 61 is used for inserting into the positioning groove after being close to the positioning groove, so that the scissor frame 10 and the mounting bracket 60 are fixed.

On the basis of this structure, when applying the swingable pressure residual shear in this embodiment, the overall structure of the scissor frame 10 can be installed on the machine body through the mounting bracket 60. When performing the residual material shearing action, the above-mentioned positioning pin 61 can move away from the positioning groove, the scissor frame 10 can be separated from the mounting bracket 60, and can move up and down driven by the scissor frame driving part 50. After the shearing is completed, the scissor frame 10 is reset, and the positioning groove of the scissor frame 10 moves to When corresponding to the structure of the positioning pin 61 of the mounting bracket 60, the positioning pin 61 can move close to the positioning groove and be inserted into the positioning groove to prevent the scissor frame 10 from falling and make the structure more stable.

Specifically, the movement of the above-mentioned positioning pin 61 can be driven by setting up a driving structure. Of course, the positioning pin 61 can also be selected as a spring pin structure in the prior art, that is, when the scissor frame 10 does not move, the spring pin The scissor holder 10 can be kept inserted into the positioning groove under the action of its own elastic component, and when the scissor holder 10 moves downwards driven by the scissor holder driver 50, the driving force provided by the scissor holder driver 50 can overcome the spring pin itself. The elastic stress provided by the elastic component drives the elastic pin to exit the positioning groove, and the scissor rest 10 can normally realize the shearing action of the remaining material.

Example 2,

Referring to Figures 7-9, what is different from Embodiment 1 is that in this embodiment, the first guide part 231 is an inner cone surface, and the second guide part 32 is an outer cone surface 321; the inner cone surface and the outer cone surface The outer diameter of 321 gradually increases from top to bottom.

When performing the shearing action, the guide rod 30 can move upward, and the outer cone surface 321 can gradually approach the inner cone surface. In the process of the outer cone surface 321 approaching the inner cone surface, the longitudinal force can be decomposed into a transverse force, and the outer cone surface 321 can be applied to the inner cone surface. The inner cone surface can decompose the force into longitudinal force, that is, the blade 21 of the scissor head 20 can be forced to swing upward to fit the shearing surface 11, and the scissor frame 10 is driven by the driving structure to approach The remaining material surface of the forming mold can complete the shearing action.

For those skilled in the art, various other corresponding changes and deformations can be made based on the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

A swing-type residual shear, characterized by:

A scissors holder, one side of the scissors holder has a shearing surface;

Scissor head, the scissor head is provided with a blade, the scissor head is rotatably installed on the side of the scissor head away from the shearing surface through a rotating shaft, the center of the rotating shaft is eccentrically arranged with the center of the scissor head, so as to Make the scissor head rotate away from the shearing surface under the action of its own gravity;

A guide mechanism is used to guide the scissor head to rotate closer to or away from the shearing surface, and the blade is used to be positioned on the shearing surface after the scissor head rotates close to the shearing surface.
The swingable residual shear according to claim 1, wherein the guide mechanism includes a guide rod and a guide groove, and a first guide portion is provided on the side of the guide groove close to the shearing surface. The rod penetrates the guide groove and can move closer to or away from the first guide part. The guide rod is used to abut against the first guide part after moving close to the first guide part, so that the scissor head can move closer to the first guide part. The shear plane rotates.
The swingable compression shear according to claim 2, wherein the guide rod is provided with a second guide part, and the second guide part is used to contact the guide rod after it moves close to the first guide part. The first guide part is slidably engaged to guide the scissor head to rotate close to the shearing surface.
The swingable pressure shear according to claim 3, wherein the first guide part is an inner cone surface, and the second guide part is an outer cone surface; the inner hole surface and the outer cone surface are The outer diameter gradually increases from top to bottom.
The swingable pressure shear according to claim 3, wherein the first guide part is a first inclined surface, and the second guide part is a second inclined surface; both the first inclined surface and the second inclined surface are It gradually tilts toward the shear plane from top to bottom; the guide rod can move along its own axis.
The swingable compression shear according to claim 3, wherein a third guide part is provided on the side of the guide groove away from the shear surface, and the guide rod is used to move away from the first guide part. The third guide portion moves close to the third guide portion and is in sliding fit with the third guide portion. The third guide portion is used to guide the scissor head to rotate away from the shearing surface when the guide rod is in sliding fit.
The swingable residual shear according to claim 6, wherein the guide rod is provided with a fourth guide part for slidingly engaging with the third guide part.
The swingable residual shear according to claim 7, wherein the third guide part is a slider, and the slider is protruding on the inner wall of the guide groove away from the first guide part; The fourth guide part is provided on the side of the guide rod away from the second guide part; the slider is provided with a third slope, and the fourth guide part is a fourth slope; the third slope and the fourth slope are The inclined planes are gradually inclined from top to bottom toward the shear plane.
The swingable pressure residual shear according to claim 2, wherein the guide mechanism includes a guide rod driver; the guide rod driver is provided in the scissor frame, and a connecting groove is provided in the scissor frame. , one end of the guide rod is connected to the connecting groove and passes through the top end of the connecting groove to be connected with the guide rod driving member, and the other end of the guide rod is connected to the guide rod in the guide groove. The guide rod driving member is used to drive the guide rod to move.
The swingable residual shear according to any one of claims 2 to 9, characterized in that the guide groove penetrates to the bottom end of the scissor head, and the bottom end of the guide rod can be moved along the bottom of the guide groove. The end extends and forms a punching part.
The swingable residual shear according to any one of claims 1 to 9, characterized in that the bottom end of the scissor frame is provided with a limiting surface, and the limiting surface is used to close the scissor head to the shearing surface. After the surface is rotated, it abuts against the top surface of the scissor head, so that the blade is located on the cutting surface.
The swingable residual shear according to claim 11, wherein a dust cover is provided on the side of the scissor frame, and the dust cover is provided outside the limiting surface and the top end of the scissor head.
The swingable pressure residual shear according to claim 11, characterized in that an air blowing channel is provided in the scissor frame, and the air blowing channel penetrates to the limiting surface and is used to introduce gas to the limiting surface. noodle.
The swingable residual pressure shear according to any one of claims 1 to 9, characterized in that the swingable residual pressure shear further includes a scissor frame driving member, and the scissor frame driving member is used to drive the scissor frame along itself. Axial movement.
The swingable residual pressure shear according to claim 14, characterized in that the swingable residual pressure shear further includes a mounting bracket, the mounting bracket is provided with a positioning pin, and the scissor frame is provided with a positioning groove. The positioning pin can move closer to or away from the positioning groove; the positioning pin is used to be inserted into the positioning groove after approaching the positioning groove, so that the scissor holder and the installation bracket are fixed.