Laryngectomy power rotary shears

Abstract

A power rotary shear is disclosed that is easy to use to facilitate cutting of rigid and semi-rigid sheet materials, such as rigid sheet materials including metal roofing, and other rolled or formed metal sheet, sheet semi-rigid plastics, fiberglass, and the like, and a method of manufacture of the shear and a method of use of the shear. This includes the use of a portable, one-handed, weight balanced, and smooth cutting power rotary shear. One particular preferred aspect has certain features including a V-shaped projection behind the rotary cutting blade that automatically separates the workpiece from the cutting operation. By including a motorized power rotary shear that can be operated with one hand while the workpiece is held with the other hand, cutting of rigid sheet materials, especially large workpieces, is virtually effortless.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 052,241, filed July 15, 2020, pursuant to 35U.SC119(e).

[0003] Statement regarding federally funded research or development

[0004] not applicable

[0005] Names of the parties to the joint research agreement

[0006] not applicable

[0007] Include information submitted via the Electronic Office Submission System (EFS webpage) in the reference documents, either in CD or text file format.

[0008] not applicable

[0009] Statements previously disclosed by the inventors or co-inventors

[0010] not applicable Technical Field

[0011] This invention relates to a throatless powered rotary shear, a method for manufacturing the shear, and a method for using the shear. More specifically, this invention relates to a motorized powered rotary shear for cutting metal sheets and other sheet materials. Background Technology

[0012] Conventional metal shearing machines are well-known in the field, including the most common type: hand-operated shearing machines. Using such shearing machines presents problems for operators because the sharp blades can cut their hands, and achieving a smooth cut is indeed problematic.

[0013] However, those who practiced these inventions have recognized certain problems with the existing technologies. One particular problem plaguing users is the difficulty in separating the material produced by the shearing machine once the cut is complete. Furthermore, removing the blade during cutting is very difficult, and precise angled cuts are extremely challenging. This presents complex situations that could lead to injury and physical disability.

[0014] It would be highly beneficial to the construction industry to provide an easy-to-use power rotary shearing machine mechanism, a method for manufacturing the shearing machine mechanism, and a method for using the shearing machine mechanism. Summary of the Invention

[0015] Based on the aforementioned advantages and industry expectations, this invention provides an easy-to-use powered rotary shear for facilitating the cutting of rigid and semi-rigid sheet materials, such as rigid sheet materials including metal top plates, or other rolled or shaped metal sheets, sheet-like rigid plastics, fiberglass, etc. The invention also provides a method for manufacturing and using the shear. This includes utilizing a portable, one-handed, weight-balanced, smooth-cutting powered rotary shear. This overcomes many of the aforementioned problems of the prior art because cutting rigid sheet materials is no longer a dangerous activity.

[0016] One particular preferred aspect features a V-shaped protrusion behind the rotary cutting blade, which automatically separates the workpiece produced during the cutting operation. With the motorized, powered rotary shearing machine, including that of the inventors, which can be operated with one hand while holding the workpiece with the other, cutting rigid sheet materials, especially large pieces, becomes almost effortless. The inclusion of a reversible motor further facilitates the exit after cutting, eliminating the need to cut the entire length of the sheet material, which is significantly easier.

[0017] This invention is particularly suitable for applications by contractors and in the construction industry that require the cutting and installation of large metal roof panels, plastic sheets for shower rooms, and any other large, rigid, sheet-like building materials. There are too many applications to list here.

[0018] While the invention will be described below by way of example with respect to specific aspects having certain features, it must also be understood that minor modifications that do not require the practitioner to recreate the component experiments are covered within the scope and breadth of the invention. Additional advantages and other novel features of the invention will be set forth in the description below, and will be apparent, in particular, to those skilled in the art upon examination, or may be learned in practice of the invention. Therefore, the invention can have many other different aspects without departing from its spirit, and its details can be modified in various ways, as will be apparent to those skilled in the art. Thus, the remainder of the specification should be considered illustrative rather than restrictive. Attached Figure Description

[0019] To further understand the intended scope and the nature and advantages of various aspects of the invention, reference should be made to the following detailed description in conjunction with the accompanying drawings, in which like parts are given like reference numerals, and wherein:

[0020] Figure 1 This is a side perspective view of a throatless powered rotary shear machine for cutting sheet materials in use, which is manufactured according to the present invention.

[0021] Figure 2The diagram shows a side elevation of a throatless power rotary shear, and the V-shaped protrusion behind the wheel is shown in detail.

[0022] Figure 3 This is a side elevation view of a throatless power rotary shear, which is used to cut a corrugated metal roof panel.

[0023] Figure 4 This is a rear perspective view of a throatless powered rotary shear that cuts sheet material in front of the corrugated section during use.

[0024] Figure 5 It is a close-up image of the meshing of rotary cutting blades;

[0025] Figure 6 One aspect of a helical gear motor mechanism used to generate rotary motion is shown;

[0026] Figure 7A It is a close-up view of the relative arrangement of the rotating blades;

[0027] Figure 7B It is a close-up view of the relative arrangement of the V-shaped protrusions behind the rotary blade;

[0028] Figure 8 It is a rear elevation view showing the relative arrangement of all components;

[0029] Figure 9 Another aspect of the invention suitable for installation is shown here, specifically installation on a sawmill. Detailed Implementation

[0030] Please refer to the attached diagram for details. Figure 1 This is a side perspective view of a throatless powered rotary shear for cutting sheet materials, which is manufactured according to the present invention. Figure 1 A throatless powered rotary shear, generally indicated by reference numeral 10, is shown. The shear includes a motor 12, a handle 14, and a trigger 16 positioned to allow for one-handed operation. The shear includes an S-shaped frame 18 housing a feed wheel 20 and a cutting wheel 22. A cutting wheel shaft 24 secures the cutting wheel 22 during operation, while a feed wheel drive shaft 28 secures the feed wheel 20. A feed wheel guard 26 helps prevent dangerous breakage of the material, thus protecting the operator. Sheet-like rigid materials 30 are easily cut by the throatless powered rotary shear 10, as will be described more fully below.

[0031] See next. Figure 2The side elevation view of the throatless powered rotary shear illustrates how sheet-like corrugated rigid material 30 is fed between the cutting wheel 22 and the feed wheel 20. As previously described, the handle 14 is mounted to or near the motor 12 along with the trigger 16. The motor can be activated cordlessly or via a conventional wired connection. The feed wheel 20 is driven rotaryly by the feed wheel drive shaft 28, while the cutting wheel 22 is driven by the cutting wheel shaft 24. The housing 26 and the lower part of the S-frame 18 help prevent injury from flying bits during the cutting operation. A distance AA exists between the end of the contact point between the feed wheel 20 and the cutting wheel 22 and the S-frame. The gap defined by the distance AA can range from 1 / 8 inch to 1 inch, and is preferably about three-quarters of an inch for corrugated metal top plate materials. This gap helps to separate the material after cutting. For some materials, the gap AA will need to be relatively small, while for others, the gap AA needs to be larger to provide a smooth flow of the cut material. Regarding the overlap between the feed wheel 20 and the cutting wheel 22, less overlap means that curved materials can be cut more easily. While the overlap can be as small as 1.0 mm, it can be as large as one inch (1”), and preferably, for some applications, it can be “0.032”. When cutting corrugated materials, a throatless powered rotary shear preferably has a smaller wheel overlap to more easily accommodate the corrugated inclined portion 34 of the rigid sheet material 30. The V-shaped protrusion behind the wheel will provide better direct flow of the material being cut, resulting in a smoother cut. Figure 2 As shown, the V-shaped protrusion is formed by gap AA and is substantially adjacent to the cutting wheel.

[0032] Figure 3 The component reference numerals described are the same as those described above. Figure 2 The same as those described in the text, but Figure 3 The figure illustrates a corrugated inclined portion 34 cutting a metal sheet 30 between a feed wheel 20 and a cutting wheel 22. As shown in the figure, and due to the minimal overlap between the cutting wheel 22 and the feed wheel 20, the corrugated inclined portion 34 can follow its shape when pushed between the two wheels, while the gap AA is defined by a V-shaped protrusion (not shown in the figure) behind the wheel. This will be discussed later. Figure 7A and Figure 7B The text provides a more comprehensive description of the V-shaped protrusion. Again, please refer to the above. Figure 2 As described, handle 14 is mounted on or near motor 12 along with trigger 16. The motor can be activated cordlessly or via a conventional wired connection. Feed wheel 20 is driven rotaryly by feed wheel drive shaft 28, while cutting wheel 22 is driven by cutting wheel shaft 24. The lower portion of housing 26 and S-frame 18 helps prevent injury from small fragments flying out during cutting operations.

[0033] Next reference Figure 4 Another view of the throatless powered rotary shear of the present invention again shows the cutting of corrugated sheet material 54. The throatless powered rotary shear, generally indicated by reference numeral 40, includes a motor 42 connected to a handle 44 and a trigger 46. A transmission cover 48 is secured in direct contact with a feed wheel guard 52 via a transmission cover housing 50. The sheet material panel 54 is fed between a cutting wheel 58 and a feed wheel (not shown in this figure). A cutting wheel shaft 56 rotates the cutting wheel 58. A cutting wheel guard 60 prevents dangerously ejected small pieces of material, thus protecting the operator. When the trigger 46 is activated, power is supplied via a wire 62 and the cutting operation begins. The material to be cut from the sheet material panel 54 is guided to be separated from the cut material by an S-shaped frame 64.

[0034] Figure 5 This is a close-up front elevation view of the cutting wheel assembly, showing the relative arrangement of the cutting wheel 58 and the feed wheel 66. The cutting wheel 58 is held in place by a cutting wheel shaft 56, which is a free-rolling shaft. The feed wheel 66 is driven by a transmission 48 within a transmission cover housing 50. An S-shaped frame 64 is clearly shown for securing all other components. The feed wheel guard 52 shields against any small debris flying off and injuring the operator, while the cutting wheel guard 60 performs the same function for the cutting wheel 58.

[0035] Figure 6 Perspective details of the transmission components of the throatless powered rotary shearing machine invention are shown, including a feed wheel drive shaft 70 driving a helical gear 72. A helical drive gear 74 rotates about a helical drive gear shaft 76, which is driven by drive gear teeth 78. A transmission housing 80 houses the entire helical gear assembly. Gear teeth 82 communicate with drive gear teeth 84 to rotate the feed wheel drive shaft 70. The transmission 86 as a whole indicates the entire transmission assembly including these gears.

[0036] Figure 7AThis is a close-up perspective view of the cutting wheel 88 and its relative arrangement with respect to the feed wheel 90. The cutting wheel axle 92 holds the cutting wheel 88 in place to bias it relative to the feed wheel 90. A cutting wheel axle guard 94 is fixed to an S-shaped frame 98. A V-shaped protrusion 100 is shown with a relatively vertical dimension, while the upper bevel 102 is approximately 45° relative to the vertical, and the lower bevel 104 is approximately 45° relative to the horizontal. Depending on the suitability for a particular cutting operation, the inventors may anticipate different angles. As material to be cut is fed between the cutting wheel 88 and the feed wheel 90, the material being cut is pushed upward by the upper bevel 102, while another piece of material is pushed downward by the lower bevel 104. This V-shaped protrusion behind the cutting wheel 88 and the feed wheel 90 better guides the flow of the material being cut, resulting in a smooth cut. A small gap exists behind the cutting wheel to allow the corrugated material being cut to separate. A transmission housing 96 encloses the entire transmission assembly, including these gears.

[0037] Figure 7B Is with Figure 7A The same view is shown, but without the cutting wheel 88 and feed wheel 90, to more clearly illustrate the V-shaped protrusion behind the cutting wheel. To understand one of the advantages of the invention, the geometry of the material outlet is more readily apparent from the angles of the outlet via the upper inclined surface 102 and the material outlet downwards via the lower inclined surface 104. The upper inclined surface 102 and the lower inclined surface 104 are respectively formed into the S-shaped frame 98.

[0038] Figure 8 This is a rear elevation view of an S-shaped frame 106, which has a vertical lower member 108, a horizontal portion 110, and an inner frame outer radius 112 opposite to an inner radius 114. A cutting wheel 116 is attached to a cutting wheel shaft 118. The cutting wheel 116 abuts against a feed wheel 120, which is driven by a feed wheel shaft 122 and communicates with a transmission mechanism inside a transmission housing 124. The ratio of the height of the vertical portion 106 to the horizontal portion 110 of the S-shaped frame is from 10:1 to 0.5:1, most preferably from 4:1 to 1:1. These ranges of aspect ratios define the optimal clearance between the cutting wheel, the feed wheel, and the material being cut, but any other ratio may be more suitable for a particular application.

[0039] Figure 9The illustration shows another aspect of the invention, generally indicated by reference numeral 130, illustrating a frame mount for the throatless powered rotary shear of the invention. The frame mount assembly 130 can be attached to a wooden support 132, such as to a sawmill frame. The mount attachment bracket 134 can include wing screws 136 or any other suitable mount attachment bracket fastener. The inventor's throatless powered rotary shear is suitably mounted to the mount attachment bracket 134 such that the material being cut can be fed through the cutting wheel and the feed wheel. Clearly, the inventor's throatless powered rotary shear can be mounted on a frame, a wall, the tailgate of a pickup truck, or any other location convenient for the operator.

[0040] A preferred aspect of this application includes a throatless powered rotary shear, comprising a portable, motorized, weight-balanced powered shear capable of single-handed operation to provide smooth cuts between a cutting wheel and a feed wheel. A V-shaped protrusion behind the cutting and feed wheels separates various cutting materials to better guide material flow, resulting in smooth cuts. An integral S-shaped frame has clearance for better material flow and an extended width between two vertical supports to optimize material flow. The S-shaped frame includes an upper and lower inclined surface incorporated integrally within the S-shaped frame.

[0041] Due to the combination of the V-shaped protrusion and the integrated S-shaped frame, this power shear can be used as a balanced, one-handed handheld cutter. In this respect, the V-shaped protrusion is preferably formed into the S-shaped frame, including an upper and lower bevel, to separate the material after cutting. Furthermore, the combined construction of the V-shaped protrusion and the S-shaped frame allows the operator to perform any type of cut, whether it is an angled cut or even a vertical cut for cutting around items such as chimney gaskets. The power shear can include a gap AA between the exit points of the cutting wheel and the feed wheel and the upper and lower bevels integrated into the S-shaped frame. Preferably, the gap AA in the S-shaped frame of the power shear is 1 / 8 inch to 1 inch, and preferably three-quarters of an inch for metal sheet top plates with a corrugated, inclined position.

[0042] Existing rotary cutting and shearing machines are primarily designed for cutting fabrics, which are very flexible and easy to remove and separate into pieces. However, when cutting rigid building materials such as metal roofing sheets, fiberglass, plastic sheets, or other hard and rigid materials, separating the pieces after cutting is much more difficult. Not only do these materials become tangled, but because they are rigid, they also pose a danger to the operator after cutting, as the operator's fingers may be cut by sharp edges. Obviously, this is not the case when cutting fabric. Therefore, these existing technical solutions are not necessarily suitable for solving the problems addressed by this invention.

[0043] When an operator cuts corrugated rigid material, the cutting surface moves upward along the slope of the corrugated area and then downward along the slope of the corrugation itself on the opposite side. During this operation, the corrugated component is pushed downward in prior art equipment, which causes problems. The cut portion becomes entangled in the machine due to the downward pushing of the rigid corrugated material after it has been cut. This invention alleviates this problem by including a V-shaped protrusion in the cutter frame immediately adjacent to the contact point with the cutting wheel. By using an S-shaped frame including the V-shaped protrusion, half of the material separates upward and the other half downward, thus providing a clean separation. This clean separation also allows the cutter to be easily withdrawn from the cutting area using a motorized reverse gear.

[0044] Existing equipment feeds the material to be cut between two shearing wheels, where it is cut and then passes under the motor housing. The cutting edges of the two rotating shearing sections are biased together at their contact point to provide a positive cutting action. A cover is provided to protect the bearings driving the shearing wheels and also to guide the material being cut, preventing it from "snagging" on the leading edge of the support. An additional bearing cover positioned above the bearings driving the shearing wheels has a dependent portion that guides the remaining material through the leading edge of the support to the cutting material. This is appropriate and acceptable for very flexible materials; however, when cutting more rigid materials, especially corrugated rigid materials, the material being cut gets caught and is not easily separated, nor is it easy to remove the cutter from the cutting operation.

[0045] When the operator must perform angled cuts, such as right-angle cuts for assemblies around square chimneys, the operator moves forward and cuts the material. A V-shaped raised frame separates the material downwards on one side and upwards on the opposite side, and provides a reversible gear that allows the cutter to easily retract to prevent further cutting. Cutting can then be initiated at a 90° angle and easily performed at a 90° angle, thus shaping rigid material as needed, depending on the specific problems during construction. However, as with prior art equipment, all the cut material passes beneath the motor housing and cutter frame.

[0046] In summary, numerous benefits have been described that arise from any or all of the ideas and features employing various specific aspects of the invention, or those ideas and features within the scope of the invention. The throatless powered rotary shear of the present invention provides perfectly smooth cuts without injuring the operator.

[0047] The above description of preferred aspects of the invention has been provided for purposes of illustration and description. The above description is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obvious modifications or variations can be made based on the foregoing teachings regarding specific aspects. These aspects were chosen and described in order to best illustrate the principles of the invention and its practical application, thereby enabling those skilled in the art to best utilize the invention in all aspects and to make various modifications according to the particular intended use. The scope of the invention is intended to be defined by the appended claims.

[0048] Industrial applicability

[0049] This invention has practical applications in both the construction and home decoration industries.

Claims

1. A rotary shearing device, comprising: S-shaped frame; Feeder wheel; A cutting wheel, the cutting wheel being adjacent to and offset from the feeding wheel, such that an overlap is defined between the cutting wheel and the feeding wheel; as well as The V-shaped protrusion is formed in the S-shaped frame and is aligned with the plane that overlaps with the plane substantially perpendicular to a first plane defined by the inner surface of the cutting wheel and / or a second plane defined by the inner surface of the feed wheel. Thus, the V-shaped protrusion is configured to push the different portions of the material cut by the wheel of the rotary shearing device in different directions.

2. The rotary shearing device according to claim 1, wherein the S-shaped frame comprises a first pillar, a second pillar, and a connecting portion located between the first pillar and the second pillar, and wherein, The V-shaped protrusion is formed in the connecting portion.

3. The rotary shearing device according to claim 1, wherein, The V-shaped protrusion includes a first inclined surface and a second inclined surface, wherein the first inclined surface and the second inclined surface are at an angle relative to each other.

4. The rotary shearing device according to claim 3, wherein the first inclined plane and the second inclined plane are angled at the same angle relative to a reference plane passing through the space between the first inclined plane and the second inclined plane.

5. The rotary shearing device according to claim 1, wherein the V-shaped protrusion is located behind the feed wheel and the cutting wheel relative to the cutting direction.

6. The rotary shearing device according to claim 1, wherein the feed wheel is operatively connected to the S-shaped frame.

7. The rotary shearing device according to claim 1, wherein the cutting wheel is operatively connected to the S-shaped frame.

8. The rotary shearing device according to claim 1 further includes a motor, the motor being operatively connected to drive the feed wheel.

9. The rotary shearing device according to claim 8, wherein the motor is located behind and spaced apart from the cutting wheel relative to the cutting direction.

10. The rotary shearing device according to claim 9, wherein the rotation axis of the motor is oriented at an angle relative to the cutting direction.

11. The rotary shearing device according to claim 9, further comprising a handle, and wherein, The handle is located behind the cutting wheel and spaced apart from the cutting wheel relative to the cutting direction.

12. The rotary shearing device according to claim 11, wherein the handle is mounted on the motor.

13. A rotary shearing device having a cutting direction, comprising: S-shaped frame; Feeder wheel; A cutting wheel, the cutting wheel being adjacent to and offset from the feeding wheel, such that an overlap is defined between the cutting wheel and the feeding wheel; as well as The V-shaped protrusion is formed within the S-shaped frame and is aligned with the overlapping portion in a plane substantially parallel to the cutting direction. Thus, the V-shaped protrusion is configured to push the different portions of the material cut by the wheel of the rotary shearing device in different directions.

14. The rotary shearing apparatus of claim 13, further comprising a motor operatively connected to drive the feed wheel, wherein the motor is located rearward of and spaced apart from the cutting wheel relative to the cutting direction, and wherein, The rotation axis of the motor is oriented at an angle relative to the cutting direction.

15. A rotary shearing device, comprising: S-shaped frame; A feed wheel having a first axis of rotation; A cutting wheel, adjacent to and offset from the feed wheel, such that an overlap is formed between the cutting wheel and the feed wheel, the cutting wheel having a second axis of rotation; and The V-shaped protrusion is formed within the S-shaped frame and is aligned with the overlapping portion in a plane substantially parallel to the first and / or second rotation axes. Thus, the V-shaped protrusion is configured to push the different portions of the material cut by the wheel of the rotary shearing device in different directions.

16. The rotary shearing apparatus of claim 15, further comprising a motor operatively connected to drive the feed wheel, wherein, The motor is located behind and spaced apart from the cutting wheel relative to the cutting direction, and the rotation axis of the motor is positioned at an angle relative to the cutting direction.

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