Hollow roll bar object cutting mechanism and method

Abstract

To provide a mechanism and method for cutting a hollow roll bar object, which can solve the problem of the hole edge being depressed or deformed during the cutting process, and improve production efficiency. The present invention includes a material input side insert shaft component and a material discharge side insert shaft component. When the cutter cuts, the right expandable head of the material input side insert shaft component and the left expandable head of the material discharge side insert shaft component are inserted into the hollow hole of the hollow roll bar object from the material input side and the material discharge side, respectively, and the outer diameters of the right expandable head and the left expandable head respectively support the hollow hole of the hollow roll bar object. It also includes a rewinding deformation compensation process, which improves the rewinding deformation problem that occurs at the hole edge during cutting. It also includes a cutter pressure release mechanism, which releases the elastic force of the pre-compressed stored energy to the hollow roll bar object when the cutter cuts, and can release the corresponding elastic pressure according to the cutter cutting depth.

Description

[Technical field]

[0001] The present invention relates to a cutting technology for a hollow roll bar object, and particularly to a cutting mechanism and method for a hollow roll bar object without a tube shaft. [Background technology]

[0002] Known winding type textile products or roll paper products mainly use a tubular object as a tube shaft around which elongated textile or paper materials are wound. The hole of the tubular object can be used as a central shaft for hanging or pulling when in use. However, in the current development, due to the need to consider environmental protection and costs, hollow roll bar products (hollow roll bar objects) that do not use a tube shaft have appeared.

[0003] As shown in FIG. 1, in the process of manufacturing a hollow roll bar object A, a long and thin hollow roll bar object A must be cut (divided) by a cutter 1 to form several finished products that can be used. However, since the material of the hollow roll bar object A is generally fiber or paper material, the cutting pressure of the cutter 1 during the cutting process causes a problem that the hole edge collapses and deforms A2 on both sides of the cut part of the hollow hole A1 of the hollow roll bar object A cut by the cutter 1. In order to solve the problem of the hole edge collapse and deformation A2, the commonly adopted method is to insert insertion shafts 11 into the hollow hole A1 of the hollow roll bar object A (as shown in FIG. 2), and the two insertion shafts 11 are opposite to each other, and there is a gap between the safety range of cutting by the cutter 1 to avoid the cutter, thereby reducing the problem of the hole edge collapse and deformation A2 during cutting as much as possible. However, this known method still has some problems, such as the insertion shaft often not being smoothly inserted into the hollow hole A1 of the hollow roll bar object A, the stroke control being inaccurate, the efficiency being low, and the size of the mechanism having to be significantly changed when the roll paper specifications change.

[0004] In addition, in the design of the known cutting mechanism, if it is desired to keep the cut end surface of the hollow roll bar object smooth, the sawtooth cutter cannot be used, but the disadvantage is that the contact surface between the cutter and the object to be cut cannot provide a suitable gap for the cut surface to escape during cutting, which will cause viscous resistance between the cutter and the cut surface of the object to be cut. When the object to be cut has a high density and is relatively inelastic, it is difficult to make a deep cut. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the object of the present invention is to provide a mechanism and method for cutting a hollow roll bar object, which can solve the problem of the hole edge being depressed or deformed at the central hole location during the cutting process of the hollow roll bar object, improve production efficiency, and reduce the problem of reduced functionality in subsequent processes and at future times. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the present invention provides a hollow roll bar object cutting mechanism and method, which includes a material input side insert shaft component and a material discharge side insert shaft component. When the cutter cuts the hollow roll bar object, the right expandable head of the material input side insert shaft component and the left expandable head of the material discharge side insert shaft component are inserted into the hollow hole of the hollow roll bar object from the material input side and the material discharge side, respectively, and the outer diameters of the right expandable head and the left expandable head respectively support the hollow hole of the hollow roll bar object. The present invention further includes a cutter pressure release mechanism, which can release the elastic force of the pre-compressed stored energy to the hollow roll bar object when the cutter cuts the hollow roll bar object, and can release the corresponding elastic pressure according to the cutting depth of the cutter. Effect of the Invention

[0007] In terms of effect, the present invention can improve the problem of the hole edge being depressed and deformed at the central hole during the cutting process of the hollow roll bar object, improve the production efficiency, and reduce the trouble of the deterioration of the function of the subsequent process and future use. The present invention introduces a servo drive component in the hollow roll bar object cutting mechanism, which controls the material input side insert shaft component and the material discharge side insert shaft component, thereby accelerating the operation procedure, precisely and accurately controlling the stroke, improving the production speed, and meeting the needs of different hole diameters of different hollow roll bar objects and the fine adjustment of the enlargement / reduction of the material input side insert shaft component and the material discharge side insert shaft component.

[0008] The rewinding deformation compensation process of the present invention makes it possible to compensate for the edge of the hole of a hollow roll bar object during the cutting operation of the hollow roll bar object, thereby improving the problem of rewinding deformation occurring at the edge of the hole of the hollow roll bar object.

[0009] The cutter pressure release mechanism of the present invention can release the elastic force of the pre-compressed stored energy to the hollow roll bar object when the cutter cuts the hollow roll bar object, and can release a corresponding elastic pressure according to the cutting depth of the cutter.

[0010] The specific techniques employed in the present invention are further illustrated in the following examples and accompanying diagrams. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a schematic diagram showing that, when a hollow roll bar object is cut with a cutter in the prior art, the hole edges are depressed and deformed on both sides of the cut portion. [Diagram 2]FIG. 1 is a schematic diagram showing that in the prior art, insertion shafts are inserted into the hollow holes of a hollow roll bar object, but the edges of the holes still collapse and deform on both sides of the cut portion when the object is cut with a cutter. [Diagram 3] FIG. 2 is a schematic diagram showing the hollow roll bar object cutting mechanism of the present invention. [Figure 4] FIG. 4 is a side view showing the arrangement relationship between the material pushing plate, the material groove, and the hollow roll bar object in FIG. 3 . [Diagram 5] FIG. 4 is a left side view of the cutting unit in FIG. 3, showing the arrangement relationship between the cutter, the material discharge side clamp, the material pushing feed plate and related cutter drive components. [Figure 6] FIG. 2 is a schematic diagram showing an operation state in which material is replenished / discharged according to the present invention; [Figure 7] FIG. 2 is a schematic diagram showing an operating state in which cutting is performed according to the present invention; [Figure 8] FIG. 2 is a schematic diagram showing a correspondence relationship between a material input side insertion shaft component and a material discharge side insertion shaft component in the present invention. [Figure 9] FIG. 9 is a schematic diagram showing a ring of multiple prongs at the end of the right expandable head in FIG. 8 . [Figure 10] FIG. 9 is a cross-sectional view showing the material input side insertion shaft component and the right servo drive component in FIG. 8. [Figure 11] FIG. 9 is a schematic diagram showing the material discharge side insertion shaft component and the left servo drive component in FIG. 8 . [Figure 12] FIG. 2 is an enlarged schematic diagram showing the corresponding relationship between the right expandable head and the left expandable head in the present invention when the outer diameter is expanded. [Figure 13] FIG. 2 is an enlarged schematic view showing the corresponding relationship between the right expandable head and the left expandable head in the present invention when the outer diameter of the head is reduced. [Figure 14A] 4 is an operational flow diagram showing a rewinding deformation compensation process according to the present invention. [Figure 14B] 4 is an operational flow diagram showing a rewinding deformation compensation process according to the present invention. [Figure 14C] 4 is an operational flow diagram showing a rewinding deformation compensation process according to the present invention. [Figure 14D] 4 is an operational flow diagram showing a rewinding deformation compensation process according to the present invention. [Figure 14E] 4 is an operational flow diagram showing a rewinding deformation compensation process according to the present invention. [Figure 15A] 1 is a schematic diagram illustrating the cutter pressure relief mechanism of the present invention and its operation; [Figure 15B] 1 is a schematic diagram illustrating the cutter pressure relief mechanism of the present invention and its operation; [Figure 15C] 1 is a schematic diagram illustrating the cutter pressure relief mechanism of the present invention and its operation; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Working Example Please refer to Figure 3. As shown in this figure, the machine body includes a cutting section 100, a material input side 200, and a material discharge side 300. The cutting section 100 has a predefined cutting position P1, and a cutter 1 is disposed at a position that corresponds exactly to the cutting position P1. A material input clamp 12a and a material discharge clamp 12b are installed on the left and right sides of the cutting position P1, respectively.

[0013] The material input side 200 includes a material input side insertion shaft component 2, a material push feed plate 3, and a material groove 4. The material input side insertion shaft component 2 includes a right pulley 21, and therefore the material input side insertion shaft component 2 can perform linear motion in the left and right direction under the driving of the right pulley drive component 211. The material push feed plate 3 can push the hollow roll bar object A toward the cutting section 100 by performing linear motion under the driving of the material push feed plate drive component 31. The material groove 4 is installed between the material push feed plate 3 and the cutting section 100. FIG. 4 is a side view showing the arrangement relationship between the material push feed plate 3, the material groove 4, and the hollow roll bar object A in FIG. 3. FIG. 5 shows a left side view of the cutting section 100 in FIG. 3, which is a side view showing the arrangement relationship between the cutter 1, the material input side clamp 12a, the material push feed plate 3, and the cutter-related drive components.

[0014] The material discharge side 300 includes a material discharge side insertion shaft component 5, a stopper plate 6, and a material discharge mechanism 7. The material discharge side insertion shaft component 5 includes a left pulley 51, and therefore the material discharge side insertion shaft component 5 can perform linear motion in the left and right directions under the drive of the left pulley drive component 511. The stopper plate 6 is installed between the cutting section 100 and the material discharge side 300.

[0015] Please refer to Figures 6 and 7. As shown in these figures, Figure 6 shows a schematic diagram of an operating state in which the material is refilled / discharged according to the present invention, and Figure 7 shows a schematic diagram of an operating state in which the cutting according to the present invention is performed. As shown in Figure 6, when the right pulley 21 and the material push feed plate 3 return to the right end, an empty material input area is formed between the cutting section 100 and the material input side 200. At this time, a hollow roll bar object A can be input onto the material groove 4.

[0016] After the hollow roll bar object A is properly placed on the material groove 4, the right expandable head 22 in the material input side insertion shaft component 2 is inserted into the hollow hole A1 of the hollow roll bar object A from the material input side 200 toward the cutting section 100, and moves left to a predetermined position, and at the same time, the material pushing feed plate 3 pushes and moves the hollow roll bar object A toward the cutting section 100, so that the left end of the hollow roll bar object A protrudes a predetermined length from the cutting position P1. At the same time, the left expandable head 52 in the material discharge side insertion shaft component 5 is also inserted into the hollow hole A1 of the hollow roll bar object A from the material discharge side 300 toward the cutting section 100, waiting for cutting to be performed.

[0017] As shown in Fig. 7, the hollow roll bar object A fed to the cutting section 100 is cut by the cutter 1 to form a finished product B having a predetermined length. Some of the finished products B after being cut are stopped by the stopper plate 6, and the left expandable head 52 of the material discharge side insertion shaft component 5 is still inserted into the hollow hole of the hollow roll bar object A. When the left pulley 51 returns to the left and reaches its end, the material discharge side insertion shaft component 5 also moves left accordingly, so that some of the finished products B after being cut are dropped into the material discharge mechanism 7, and are sent out by the slope belt conveyor of the material discharge mechanism 7.

[0018] Please refer to Figure 8. This figure is a schematic diagram showing the relationship between the material input side insertion shaft component 2 and the material discharge side insertion shaft component 5 in the present invention. As shown in the figure, the left end of the material input side insertion shaft component 2 is coupled with the right expandable head 22, the end of the right expandable head 22 is divided into a ring-shaped plurality of claws 221 (as shown in Figure 9), and a right tapered hole 222 is formed between the plurality of claws 221. The right tapered head 23 is movably accommodated in the right tapered hole 222 (Figure 10).

[0019] Similarly, the right end of the material discharge side insertion shaft component 5 is coupled to a left expandable head 52, the end of which is also divided into a plurality of claws 521 forming an annular row, and a left tapered hole 522 is formed between the plurality of claws 521. The left tapered head 53 is movably housed in the left tapered hole 522 (FIG. 11).

[0020] 10 shows a cross-sectional view of the material input side insertion shaft component 2 in FIG. 8. One end of the right outer conduit 24 is connected to the right expandable head 22, and the other end is connected to the right pulley 21. One end of the right central driving shaft 25 is connected to the right taper head 23, and the other end is connected to the right servo driving component 26 through the internal space of the right outer conduit 24.

[0021] The right servo drive component 26 includes a right servo motor 261. When the right servo motor 261 rotates, it drives and rotates a rotating sleeve 273 through an output shaft 272 of a reducer 271. Since the inside of the rotating sleeve 273 is coupled to a ball nut 275 by a key 274, the ball nut 275 rotates according to the rotating sleeve 273, and since a ball screw 276 is screwed into the ball nut 275, the ball screw 276 can perform a linear extension / retraction motion corresponding to the ball nut 275. The ball screw 276 is connected to the right central drive shaft 25 by a ball spline 277. The outside of the ball spline 277 is covered with a spline bushing 278 in an annular shape, and is further connected to a fixed cylinder 280 by a key 279, which allows the ball spline 277 to only move linearly in the left-right direction. Therefore, the ball spline 277 can cause the right central driving shaft 25 to move linearly in the left-right direction, which allows the right taper head 23 to move linearly in the right taper hole 222 along the left-right direction, and further expands or reduces the outer diameter of the right expandable head 22.

[0022] 11 shows a cross-sectional view of the material discharge side insertion shaft component 5 in FIG. 8. One end of the left outer conduit 54 is connected to the left expandable head 52, and the other end is connected to the left pulley 51. One end of the left central driving shaft 55 is connected to the left taper head 53, and the other end is connected to the left servo driving component 56 through the internal space of the left outer conduit 54.

[0023] The left servo drive component 56 includes a left servo motor 561. When the left servo motor 561 rotates, it drives and rotates a rotating sleeve 573 through an output shaft 572 of a reducer 571. Since the inside of the rotating sleeve 573 is coupled to a ball nut 575 by a key 574, the ball nut 575 rotates following the rotating sleeve 573, and a ball screw 576 performs a linear expansion and contraction motion relative to the ball nut 575. The ball screw 576 is connected to the left center drive shaft 55 by a ball spline 577. The outside of the ball spline 577 is covered with a spline bushing 578 in an annular shape, and is connected to a fixed cylinder 580 by a key 579, so that the ball spline 577 can only move linearly in the left-right direction. The spline bushing 578 allows the left central drive shaft 55 to move linearly in the left-right direction, so that the left taper head 53 can move linearly in the left taper hole 522 along the left-right direction, and further expand or reduce the outer diameter of the left expandable head 52.

[0024] In the present invention, the servo motor is combined with related components to replace the operation of the traditional pneumatic cylinder, accelerating the operation procedure and improving the production speed. In the present invention, the servo motor is driven in a stepless stroke control type to achieve the enlargement / reduction of the outer diameter of the right expandable head 22 and the left expandable head 52, so as to meet the needs of different hole diameters of different hollow roll bar objects and the purpose of fine-tuning the enlargement / reduction.

[0025] In addition, through the driving of the servo motor, the right taper head 23 can be adjusted to easily change the size of the expansion / contraction of the outer diameter of the right expandable head 22, and the left taper head 53 can be adjusted to easily change the size of the expansion / contraction of the outer diameter of the left expandable head 52. This design of the present invention can accommodate the inner hole diameter sizes of different hollow roll bar object products, so as to reduce the production and replacement of standard parts, and the expansion width of the right expandable head 22 and the left expandable head 52 can be fine-tuned, and the best production quality can be obtained.

[0026] 12 shows an enlarged schematic diagram of the correspondence between the right expandable head 22 and the left expandable head 52 in the present invention when the outer diameter is expanded. When the right tapered head 23 moves leftward and presses the inner wall of the right tapered hole 222 of the right expandable head 22, the claws 221 of the right expandable head 22 expand outward, causing the outer diameter of the right expandable head 22 to expand. When the left tapered head 53 moves rightward and presses the inner wall of the left tapered hole 522 of the left expandable head 52, the claws 521 of the left expandable head 52 expand outward, causing the outer diameter of the left expandable head 52 to expand.

[0027] When the hollow roll bar object A is fed into the cutting section 100 and protrudes a predetermined length from the cutting position P1, the right expandable head 22 and the left expandable head 52 are located on either side of the cutting position P1 corresponding to each other, and there is a gap between them to avoid the cutter. When the outer diameters of the right expandable head 22 and the left expandable head 52 are in an outward expanded state, they each support the inner ring edge of the hollow roll bar object A, and the cutter 1 cuts the hollow roll bar object A along the cutting position P1.

[0028] During the cutting operation and material pushing operation of the hollow roll bar object A in the present invention, the operation of expanding / reducing the outer diameter of the right expandable head 22 and the left expandable head 52 is advantageous for inserting the right expandable head 22 and the left expandable head 52 into the hollow hole A1 of the hollow roll bar object A, and is also advantageous for the cutting operation.

[0029] 13 shows an enlarged schematic diagram of the correspondence between the right expandable head 22 and the left expandable head 52 in the present invention when the outer diameter is reduced. When the right taper head 23 is moved rightward (i.e., away from the cutting portion 100) by the driving of the right servo driving component 26, the pressure pressed by the right taper head 23 on each claw portion 221 of the right expandable head 22 becomes smaller or disappears, thereby reducing the outer diameter of the right expandable head 22. Similarly, when the left taper head 53 is moved leftward by the driving of the left servo driving component 56, the pressure pressed by the left taper head 53 on each claw portion 521 of the left expandable head 52 becomes smaller or disappears, thereby reducing the outer diameter of the left expandable head 52.

[0030] When the cutter 1 cuts the hollow roll bar object A, when the first stage finished product B is cut out and the hollow roll bar object A is pushed forward again by the next predetermined length, there must be a gap at the cutting position P1 to avoid the cutter, so the hollow hole A1 of the hollow roll bar object A still cannot fully receive full support, so the side edge part of the cutting position P1 of the hollow roll bar object A still has a partial collapse and deformation problem. When the left expandable head 52 is pushed into the hollow hole A1 of the hollow roll bar object A, the left expandable head 52 will cause the above collapsed and deformed part to have a rewind deformation problem. In order to further improve the above rewind deformation problem in the present invention, a rewind deformation compensation process is added based on the above structure design.

[0031] 14A-14E show an operational flow diagram of the unwinding deformation compensation process of the present invention, which includes the following steps:

[0032] As shown in FIG. 14A, after cutting is completed, the cutter 1 rises, the left taper head 53 retreats, causing the outer diameter of the left expandable head 52 to shrink, while the outer diameter of the right expandable head 22 remains in an expanded state, and the material pushing plate 3 pushes and moves the hollow roll bar object A to the left by a predetermined length.

[0033] As shown in FIG. 14B, the left tapered head 53 moves to the right, expanding the outer diameter of the left expandable head 52, and at this time, the outer diameter of the right expandable head 22 also keeps expanding, and the cutter 1 descends to cut.

[0034] As shown in FIG. 14C, after cutting is completed, the cutter 1 rises, and at this time, while the hollow roll bar object A is stationary, the left taper head 53 retreats, contracting the outer diameter of the left expandable head 52; at this time, while the outer diameter of the right expandable head 22 expands, the right expandable head 22 moves to the left and passes the cutting position P1, and the outer ring edge of the right expandable head 22 compensates for the front rewinding deformation A3 of the front hole edge of the hollow roll bar object A.

[0035] As shown in FIG. 14D, the material pushing feed plate 3 pushes and moves the hollow roll bar object A again to the left by a predetermined length, and during the stroke in which the hollow roll bar object A is pushed and moves to the left and passes the left expandable head 52, the outer ring edge of the left expandable head 52 compensates for the rear rewinding deformation A4 of the rear hole edge of the hollow roll bar object A.

[0036] As shown in FIG. 14E, when the hollow roll bar object A is pushed and moved leftward and reaches a predetermined length of the cutting position P1, the material pushing plate 3 stops pushing the material, and the left tapered head 53 moves to the right to expand the outer diameter of the left expandable head 52, and at this time, the outer diameter of the right expandable head 22 also maintains an expanded state.

[0037] The above procedure is repeated many times until all cutting of the hollow roll bar object A is completed.

[0038] In the hollow roll bar object cutting mechanism of the present invention, the cutting section 100 further includes a cutter pressure release mechanism 400, which enables the cut hollow roll bar object to be peeled off during the process of the cutter cutting the hollow roll bar object, thereby eliminating the increased resistance force that the cutter experiences when cutting deeply.

[0039] 15A-15C, these figures show a schematic diagram of the cutter pressure release mechanism of the present invention and its operation. A material input clamp 12a and a material discharge clamp 12b are installed on both sides of the cutter 1 on the hollow roll bar object A, and are used to clamp the hollow roll bar object A. The material input clamp 12a and the material discharge clamp 12b are connected to a right positioning plate 14a and a left positioning plate 14b by a right rotation center 13a and a left rotation center 13b, respectively.

[0040] The cutter pressure release mechanism 400 of the present invention includes a right crankshaft connecting rod 81a, the top end of which is connected to the bottom edge of the material input side clamp 12a, and the bottom end of which is connected to the right crankshaft 82a. The right crankshaft connecting rod 81a is separately connected to the right elastic part 83a. The right crankshaft 82a can be driven and rotated by the right servo motor 84a. When the right crankshaft 82a is driven by the right servo motor 84a and rotates by a certain angle, the right elastic part 83a can be compressed and stored energy.

[0041] Similarly, the top end of the left crankshaft connecting rod 81b is connected to the bottom edge of the material discharge side clamp 12b, and the bottom end is connected to the left crankshaft 82b. The left crankshaft connecting rod 81b is separately coupled to the left elastic part 83b. The left crankshaft 82b can be driven and rotated by the left servo motor 84b. When the left crankshaft 82b is driven by the left servo motor 84b and rotated by a certain angle, the left elastic part 83b can be compressed and stored energy.

[0042] When the cutter 1 has not yet cut the hollow roll bar object A, the cutter pressure release process is first carried out, that is, the right crankshaft 82a and the left crankshaft 82b are raised, and the right crankshaft connecting rod 81a and the left crankshaft connecting rod 81b are respectively abutted, so that the right elastic part 83a and the left elastic part 83b are compressed and energy is stored. When the cutter 1 begins to cut the hollow roll bar object A, the structure of the hollow roll bar object A is partially destroyed at the cutting position P1, so at this time, the right elastic part 83a and the left elastic part 83b release the elasticity that was originally compressed and stored energy, and apply elasticity to the material input side clamp 12a and the material discharge side clamp 12b through the right crankshaft connecting rod 81a and the left crankshaft connecting rod 81b, respectively, thereby enlarging the crack at the cutting position P1 of the hollow roll bar object A and reducing the viscous resistance force of the hollow roll bar object A against the cutter 1, making it easier for the cutter 1 to cut the hollow roll bar object A.

[0043] When the cutter 1 cuts the hollow roll bar object A to a deeper depth, the right elastic part 83a and the left elastic part 83b release corresponding elastic pressure to the bottom edges of the material input side clamp 12a and the material discharge side clamp 12b according to the cutting depth of the cutter 1, thereby performing the ideal and best cutting auxiliary function of cutting and peeling.

[0044] The above embodiments are only for illustrative purposes of the structural design of the present invention, and are not used to limit the present invention. Anyone skilled in the art can make modifications and changes to the above embodiments based on the structural design and spirit of the present invention, but these modifications still fall within the spirit of the present invention and the scope of the patent as defined below. Therefore, the protection scope of the rights of the present invention shall be as set forth in the following claims. [Explanation of symbols]

[0045] 100 cutting section 200 Material input side 300 Material discharge side 400 Cutter Pressure Relief Mechanism 1 Cutter 11 Insertion shaft 12a Material input side clamp 12b Material discharge side clamp 13a Right rotation center 13b Left rotation center 14a Right positioning plate 14b Left positioning plate 2. Material input side insert shaft component 21 Right pulley 211 Right Pulley Drive Component 22 Right Extendable Head 221 Claw 222 Right taper hole 23 Right taper head 24 Right external duct 25 Right center drive shaft 26 Right servo drive component 261 Right servo motor 271 Reducer 272 Output shaft 273 Rotating Sleeve 274 Keys 275 Ball nut 276 Ball Screw 277 Ball Spline 278 Spline bush 279 Keys 280 Fixed tube 3 Material push-feed plate 31 Material push feed plate drive component 4 Material groove 5 Insert shaft component on material discharge side 51 Left pulley 511 Left pulley drive component 52 Left Extendable Head 521 Claw 522 Left taper hole 53 Left taper head 54 Left external duct 55 Left center drive shaft 56 Left servo drive component 561 Left servo motor 571 Reducer 572 Output shaft 573 Rotating Sleeve 574 Keys 575 Ball Nut 576 Ball Screw 577 Ball Spline 578 Spline bush 579 Keys 580 Fixed tube 6 Stopper plate 7 Material discharge mechanism 81a Right crankshaft connecting rod 81b Left crankshaft connecting rod 82a Right crankshaft 82b Left crankshaft 83a Right elastic part 83b Left elastic part 84a Right servo motor 84b Left servo motor A Hollow roll bar object A1 hollow hole A2 Hole edge collapse / deformation A3 Front Rewind Transformation A4 Rear Rewind Transformation B Finished product P1 cutting position

Claims

1. A hollow roll bar object cutting mechanism, which A cutting section in which a cutter is disposed and a cutting position is defined in advance; a material input side located on one side of the cutting section, supplying a hollow roll bar object to the cutting section through a material groove, the hollow roll bar object having a hollow hole; a material discharge side located on the other side of the cutting portion; Including, a material input side insertion shaft component is disposed in the material input side, the material input side insertion shaft component includes a right extendable head that can be inserted into the hollow hole of the hollow roll bar object from the material input side toward the cutting portion, and the right extendable head can be controlled to exhibit an expanded state or a contracted state; a material discharge side insertion shaft component is disposed in the material discharge side, the material discharge side insertion shaft component includes a left extendable head that can be inserted into the hollow hole of the hollow roll bar object from the material discharge side toward the cutting portion, and the left extendable head can be controlled to exhibit an expanded state or a contracted state; In this, the hollow roll bar object is fed into the cutting section through the material groove and protrudes from the cutting position by a predetermined length, the right expandable head is inserted into the hollow hole of the hollow roll bar object from the material input side toward the cutting section, and the left expandable head is inserted into the hollow hole of the hollow roll bar object from the material discharge side toward the cutting section, and the right expandable head and the left expandable head are located on both sides of the cutting position corresponding to each other, and there is a gap to avoid the cutter, and when the outer diameter of the right expandable head and the left expandable head are in an expanded state, they respectively support the hollow hole of the hollow roll bar object, and the hollow roll bar object is cut along the cutting position by the cutter, moreover, A material input side clamp installed to the right of the cutting position; A material discharge side clamp installed to the left of the cutting position; a cutter pressure release mechanism, which is installed in the cutting section and includes a right elastic part and a left elastic part, and when the cutter has not yet cut the hollow roll bar object, the cutter is compressed and stores energy in advance, and when the cutter starts to cut the hollow roll bar object, the right elastic part and the left elastic part release the elastic force that has been compressed and stored energy to the bottom edge of the material input side clamp and the material discharge side clamp, thereby making the gap at the cutting position of the hollow roll bar object larger; and when the cutter cuts the hollow roll bar object to a deeper depth, the right elastic part and the left elastic part release the corresponding elastic pressure to the material input side clamp and the material discharge side clamp according to the cutter's cutting depth; 1. A hollow roll bar object cutting mechanism comprising:

2. The material input side insertion shaft component is a right outer conduit, one end of which is connected to the right expandable head and the other end of which is connected to the right pulley, the end of the right expandable head being divided into a plurality of claws forming an annular row, and a right tapered hole being formed between the plurality of claws; a right tapered head movably accommodated in the right tapered hole; Right servo drive component; a right central driving shaft, one end of which is coupled to the right tapered head and the other end of which is connected to the right servo driving component through the internal space of the right outer conduit; Including, When the right central driving shaft is driven by the right servo driving component to move toward the cutting portion, the right taper head is driven to move, and the right taper head presses against the inner bore wall of the right expandable head, so that the several claws of the right expandable head are expanded outward, thereby expanding the outer diameter of the right expandable head; When the right central drive shaft is driven by the right servo drive component to move away from the cutting section, the pressure exerted by the right tapered head on each of the claws of the right expandable head is reduced or eliminated, thereby reducing the outer diameter of the right expandable head.

2. The hollow roll bar object cutting mechanism of claim 1.

3. The right servo drive component is A right servo motor that drives and rotates the rotating sleeve; a ball nut coupled to the rotating sleeve and adapted to rotate with the rotating sleeve; a ball screw that is screwed into the ball nut, is moved by the ball nut, and performs a linear expansion and contraction motion corresponding to the ball nut; a ball spline coupled to the ball screw and the right central drive shaft; a spline bushing, which annularly covers the ball spline and is coupled to a fixed cylinder, so that the ball spline can cause the right central driving shaft to perform a lateral linear motion, and the right tapered head can perform a lateral linear motion movement in the right tapered bore, and further expand or reduce the outer diameter of the right expandable head; Including, 3. The hollow roll bar object cutting mechanism of claim 2.

4. The material discharge side insertion shaft component is a left outer conduit, one end of which is connected to the left expandable head and the other end of which is connected to the left pulley, the end of the left expandable head being divided into a plurality of claws forming an annular row, and a left tapered hole being defined between the plurality of claws; a left tapered head movably accommodated in the left tapered hole; Left servo drive components; a left central driving shaft, one end of which is coupled to the left tapered head and the other end of which is connected to the left servo driving component through the inner space of the left outer conduit; Including, When the left central driving shaft is driven by the left servo driving component to move toward the cutting section, the left tapered head is driven to move, and the left tapered head presses against the inner bore wall of the left expandable head, so that the several claws of the left expandable head are expanded outward, thereby expanding the outer diameter of the left expandable head; When the left central drive shaft is driven by the left servo drive component to move in a direction away from the cutting section, the pressure exerted by the left tapered head on each of the claws of the left expandable head is reduced or eliminated, thereby reducing the outer diameter of the left expandable head.

2. The hollow roll bar object cutting mechanism of claim 1.

5. The left servo drive component is A left servo motor that drives and rotates the rotating sleeve; a ball nut coupled to the rotating sleeve and adapted to rotate with the rotating sleeve; a ball screw that is screwed into the ball nut, is moved by the ball nut, and performs a linear expansion and contraction motion corresponding to the ball nut; a ball spline coupled to the ball screw and the left center drive shaft; a spline bushing, annularly covering the ball spline and coupled to a fixed cylinder, so that the ball spline can cause the left central drive shaft to perform a lateral linear motion, so that the left tapered head can perform a lateral linear motion movement in the left tapered bore, and further expand or reduce the outer diameter of the left expandable head; Including, 5. The hollow roll bar object cutting mechanism of claim 4.

6. The cutter pressure relief mechanism includes: The material input side clamp is connected to the right positioning plate by a right rotation center, A right crankshaft located at the bottom of the material input side clamp; a right crankshaft connecting rod disposed between the material input side clamp and the right crankshaft and connected to the right elastic part; a right servo motor connected to the right crankshaft and used to drive the right crankshaft; The material discharge side clamp is connected to the left positioning plate by a left rotation center, A left crankshaft located at the bottom of the material discharge side clamp; a left crankshaft connecting rod disposed between the material discharge side clamp and the left crankshaft and connected to the left elastic part; a left servo motor connected to the left crankshaft and used to drive the left crankshaft; Including, 2. The hollow roll bar object cutting mechanism of claim 1.

7. A method for cutting a hollow roll bar object, comprising the steps of: applying elastic force, which has been compressed and has stored energy, to a cutting position of the hollow roll bar object when a cutter of a hollow roll bar object cutting mechanism cuts the hollow roll bar object; the method comprising the steps of: (a) a material input clamp is installed to the right of the cutting position to be used to clamp the hollow roll bar object; (b) a material discharge side clamp is installed to the left of the cutting position to be used to clamp the hollow roll bar object; (c) performing a cutter pressure release step when the cutter has not yet cut into the hollow roll bar object, so that the right elastic component and the left elastic component are pre-compressed and store energy; (d) when the cutter starts to cut the hollow roll bar object, the right elastic part and the left elastic part release the elastic force that has been compressed and stored in energy to the bottom edges of the material input side clamp and the material discharge side clamp, thereby enlarging the crack at the cutting position of the hollow roll bar object; (e) when the cutter cuts the hollow roll bar object to a deeper depth, the right elastic part and the left elastic part release corresponding elastic pressure to the material input clamp and the material discharge clamp according to the cutting depth of the cutter; This includes the steps: How to cut a hollow roll bar object.

8. The cutter pressure releasing step of step (c) includes: (c1) the right crankshaft is disposed at the bottom of the material input side clamp; (c2) a right crankshaft connecting rod is disposed between the material input side clamp and the right crankshaft, and the right crankshaft connecting rod is coupled to the right elastic part; (c3) a right servo motor is coupled to the right crankshaft and used to drive and rotate the right crankshaft; (c4) the left crankshaft is disposed at the bottom of the material discharge side clamp; (c5) a left crankshaft connecting rod is disposed between the material discharge side clamp and the left crankshaft, and the left crankshaft connecting rod is coupled to the left elastic part. (c6) a left servo motor is coupled to the left crankshaft and used to drive and rotate the left crankshaft; 8. The method for cutting a hollow roll bar object according to claim 7, comprising the steps of:

Images