Anti-rebound assisted cutting device

Abstract

The application provides an anti-rebound auxiliary cutting device, and relates to the technical field of woodworking tools. The anti-rebound auxiliary cutting device comprises a mounting seat, an elastic member and at least one retreat-preventing piece. The retreat-preventing piece is arranged on the mounting seat and can swing by a certain angle, one end of the retreat-preventing piece protrudes from the mounting seat and serves as a retreat-preventing end, and a friction structure is arranged on the contact surface of the retreat-preventing end and wood to be cut. When the retreat-preventing end is in the initial position of swinging, the initial angle between the retreat-preventing end and the feeding direction of the wood to be cut is a right angle or an obtuse angle, so that the retreat-preventing end is driven by the wood to be cut on one side to swing forward. The elastic member is arranged between the retreat-preventing piece and the mounting seat, and is used for abutting against one side of the wood to be cut to block the rebound of the wood to be cut when the retreat-preventing end is subjected to a force for swinging backward. The anti-rebound auxiliary cutting device solves the technical problem that the existing structure brings many resistances to manual feeding, and the feeding process is relatively laborious.

Description

Technical Field

[0001] This invention relates to the technical field of woodworking tools, and in particular to an anti-rebound auxiliary cutting device. Background Technology

[0002] Woodworking feather boards, as a woodworking auxiliary tool, play an important role in the process of wood cutting and processing.

[0003] In existing woodworking feather board installations, it is typically installed at a designated position on the sawing equipment using an adjustable mounting structure. After installation, the active end of the feather board can contract and deform forward to press tightly against one side of the wood to be cut, such as the board material. This provides sufficient resistance to prevent the board from rebounding. For example, US Patent US10843281 B2 discloses an anti-recoil device.

[0004] Among them, the woodworking feather board achieves the above-mentioned anti-rebound effect through elastic deformation on the basis of compression and clamping, but at the same time it also brings a lot of resistance to manual pushing, making the feeding process more laborious; in addition, the above-mentioned elastic feather structure that generates anti-rebound resistance through deformation is difficult to fix or control, so it is impossible to set up a measuring structure on this structure. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary cutting device that prevents rebound, thereby solving at least one of the above-mentioned technical problems.

[0006] Invention solution:

[0007] This invention provides an auxiliary cutting device for preventing rebound, comprising a mounting base, an elastic element, and at least one anti-rebound element; the anti-rebound element is disposed on the mounting base and can swing back and forth at a certain angle, with one end protruding from the mounting base and serving as an anti-rebound end, and the contact surface between the anti-rebound end and the wood to be cut is provided with a friction structure; when the anti-rebound end is in the initial swing position, the initial angle formed by it and the feeding direction of the wood to be cut is a right angle or an obtuse angle, which is used to make the anti-rebound end swing forward under the drive of the wood to be cut on one side; the elastic element is disposed between the anti-rebound element and the mounting base, which is used to make the anti-rebound end abut against one side of the wood to be cut by the backward swinging force to prevent its rebound.

[0008] Furthermore, the contact surface of the anti-reverse end is curved.

[0009] Furthermore, the friction structure adopts a toothed structure.

[0010] Furthermore, it includes a toggle linkage, which is movably disposed on the mounting base and disposed on the anti-reverse member, for linking the anti-reverse member to swing forward at a certain angle, and the anti-reverse member is limited to the toggle linkage or the mounting base after swinging forward.

[0011] Furthermore, the actuating linkage is slidably disposed on the mounting base, and includes a linkage portion and an actuating portion protruding from one side of the linkage portion; the actuating portion abuts against one side of the anti-reverse member, and is used to actuate the anti-reverse member to swing forward at a certain angle; the anti-reverse member is positioned at the linkage portion after swinging forward.

[0012] Furthermore, when the anti-reverse component is positioned at the rear limit of the actuating link, the angle at which the anti-reverse end swings forward under the linkage of the actuating link is less than its maximum swing angle.

[0013] Furthermore, it also includes a knob, which is rotatable at a certain angle and is mounted on the mounting base. Its outer peripheral wall has a linkage part that abuts against the actuating linkage, which is used to move the actuating linkage a certain distance. At the same time, the knob rotation is limited to the actuating linkage after it has moved so that the knob maintains the position after rotation.

[0014] Furthermore, the mounting base includes a detachably connected adjusting base and an end base, and the end base can be flipped and installed on the adjusting base. At the same time, the elastic element and the anti-reverse element are installed on the end base to make the anti-reverse structure of the device applicable to both sides of the wood to be cut.

[0015] Furthermore, the mounting base includes an adjusting base and a fixed base, the adjusting base being movably and adjustably disposed on the fixed base; the adjusting base is provided with an adjusting scale along the moving direction, the adjusting scale being movably and adjustably disposed on the adjusting base, and the fixed base is provided with an indicator mark that corresponds to the scale line of the adjusting scale.

[0016] Furthermore, the scale lines include one or more zero scale lines spaced apart, and the readings of the scale lines gradually increase from the zero scale line toward the wood to be cut.

[0017] Beneficial effects:

[0018] This invention provides an auxiliary cutting device to prevent rebound. The anti-rebound end of the anti-rebound component can swing forward at a certain angle under the influence of the wood to be cut. Simultaneously, under the action of the elastic component, the anti-rebound end is subjected to a backward swinging force and remains in contact with one side of the wood to be cut. When the wood to be cut rebounds due to the saw blade's thrust, the anti-rebound end, under the aforementioned elastic force and friction, will instantly press against the wood to counteract the elastic force, thereby achieving the anti-rebound effect. Furthermore, the forward swing angle of the anti-rebound component (e.g., the angle of the linked swing or its own limit swing angle), or in other words, the dimension perpendicular to the wood feeding direction after swinging, is easily determined. Therefore, the swinging anti-rebound end can be used as a contact measuring end. Thus, a measuring structure can be combined with this structure. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A perspective view of the auxiliary cutting device provided in this embodiment from the front.

[0021] Figure 2 This is a plan view of the front of the auxiliary cutting device provided in this embodiment;

[0022] Figure 3 This is a partial plan view of the back of the auxiliary cutting device provided in this embodiment (after removing the end base shell);

[0023] Figure 4 The following are partial planar comparison views of the back of the auxiliary cutting device provided in this embodiment. In the left image, the anti-reverse component is in a rotation-limited state for measurement, and in the right image, the anti-reverse component is in a forward-swinging state for stopping the retraction.

[0024] Figure 5 This is a partial structural schematic diagram of the auxiliary cutting device provided in this embodiment. The actuating part is only provided on the rear side of the anti-reverse member. When the anti-reverse member swings forward under the action of the wood, it will not drive the actuating part.

[0025] Figure 6 This is a partial structural schematic diagram of the auxiliary cutting device provided in this embodiment;

[0026] Figure 7 This is an explanatory diagram showing the state or function switching of the auxiliary cutting device provided in this embodiment. The states shown in Figures ① and ② can be switched by turning a knob, and the two states are respectively related to... Figure 4 The two images correspond to each other (showing the front and back of the two states respectively). In addition, the black stripes in the images represent wood.

[0027] icon:

[0028] 100 - Mounting base; 110 - Adjustment base; 111 - Adjustment scale; 120 - End base; 130 - Fixed base; 131 - Indicator mark;

[0029] 200 - Anti-reverse component; 210 - Anti-reverse end;

[0030] 300 - Actuating linkage; 310 - Linkage section; 320 - Actuating section;

[0031] 400 - Knob; 410 - Linkage part;

[0032] 500-Adjusting wheel. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] This embodiment provides an auxiliary cutting device to prevent rebound; please refer to... Figure 1-7As shown, the device includes a mounting base 100, an elastic element, and at least one anti-reverse element 200. The anti-reverse element 200 is disposed on the mounting base 100 and can swing back and forth at a certain angle. One end of the anti-reverse element protrudes from the mounting base 100 and serves as an anti-reverse end 210. The contact surface between the anti-reverse end 210 and the wood to be cut is provided with a friction structure. When the anti-reverse end 210 is in the initial swing position, the initial angle between it and the feeding direction of the wood to be cut is a right angle or an obtuse angle, which is used to make the anti-reverse end 210 swing forward under the action of the wood to be cut on one side. The elastic element is disposed between the anti-reverse element 200 and the mounting base 100, which is used to make the anti-reverse end 210 abut against one side of the wood to be cut by the force of the backward swing to prevent it from rebounding.

[0038] Specifically, when taking the wood to be cut as a reference, "front-to-back" refers to the conveying direction of the wood on the sawing equipment during sawing. Regarding the swing structure of the stopper 200, its end or the part between its two ends can be pivotally mounted on the mounting base 100. At the same time, the swing angle of the stopper 200 itself, that is, the limit angle range, depends on the limiting structure set on both sides of the stopper 200 on the mounting base 100, which can be limited to the two extreme positions through the two square movable openings shown in the figure. Among them, when the stopper end 210 is in the initial swing position, the initial angle formed by it and the feeding direction of the wood to be cut is a right angle or an obtuse angle. In this way, when the wood to be cut is loaded, the stopper end 210 can swing forward under the action of the wood and cannot swing backward. More importantly, after swinging forward, the stopper end 210 and the wood... The distance between the materials is naturally smaller than the swing radius of the stop member 200. Thus, within a certain swing angle range, when the wood rebounds, the stop end 210 can hold the wood in place and prevent it from moving backward. The contact surface of the stop end 210 is provided with a friction structure, which helps to swing the stop end 210 forward when the wood to be cut is loaded. More importantly, when the wood rebounds, it helps to apply a large resistance to it instantly to counteract the rebound force. The stop end 210 is subjected to a backward swinging force under the action of the spring. Therefore, the elastic element often adopts a torsion spring structure. Specifically, the torsion spring structure (not shown in the figure) can be set inside or outside the pivot end of the stop member 200. For the specific installation structure of the torsion spring itself, please refer to the existing technology, which will not be elaborated here.

[0039] In this embodiment, the contact surface of the anti-reverse end 210 is a curved surface.

[0040] Specifically, the contact surface of the anti-reverse end 210 is a curved surface. This curved surface can be a regular or irregular end body such as a sphere or a cylinder. Preferably, the curved surface is a cylindrical surface, which can effectively increase the vertical contact area and thus ensure the anti-reverse effect. When a curved surface is used, when the wood is rebounded by the saw blade force, the curved surface generates a rotational tendency and instantly increases the resistance to the rebounding wood, thereby offsetting the elastic force it receives and effectively preventing it from retreating.

[0041] In this embodiment, the friction structure adopts a toothed structure.

[0042] Specifically, the toothed structure has a certain depth, and preferably uses vertical grooves, which are roughly perpendicular to the direction of the wood's rebound, thereby increasing the friction between the grooves and the rebounding wood.

[0043] In this embodiment, a toggle link 300 is included. The toggle link 300 is movably disposed on the mounting base 100 and disposed on the anti-reverse member 200. It is used to link the anti-reverse member 200 to swing forward at a certain angle, and the anti-reverse member 200 is limited to the toggle link 300 or the mounting base 100 after swinging forward.

[0044] Specifically, the anti-reverse component 200 swings forward and is limited to the actuating link 300. At the same time, due to the actuating link 300 moving (towards its rear), the anti-reverse end 210 is in a position where it is rotated and cannot swing. This provides a structural basis for measuring the foundation dimensions by using the anti-reverse end 210 as a measuring end.

[0045] In this embodiment, the actuating linkage 300 is slidably disposed on the mounting base 100, and includes a linkage portion 310 and an actuating portion 320 protruding from one side of the linkage portion 310; the actuating portion 320 abuts against one side of the anti-reverse member 200 and is used to actuate the anti-reverse member 200 to swing forward at a certain angle; the anti-reverse member 200 swings forward and is limited to the linkage portion 310.

[0046] Specifically, the actuating part 320 abuts against the rear side of the anti-reverse member 200 and is used to actuate the anti-reverse member 200 forward in one direction. When the anti-reverse member 200 swings forward under the action of the wood to be cut, it will not drive the actuating link 300 to move.

[0047] In this embodiment, when the anti-reverse member 200 is positioned at the rear limit of the actuating link 300, the anti-reverse end 210 swings forward at an angle less than its maximum swing angle under the linkage of the actuating link 300.

[0048] Specifically, the difference between the maximum swing angle of the stop member 200 itself, i.e., the limit angle, and the angle at which it swings forward under the linkage of the actuating linkage 300 is the margin. This angular margin corresponds to a dimensional margin in the vertical direction of the wood, i.e., the width margin of the wood, which is used to compensate for the positive error in the width of the wood. That is, when the stop end 210, which is limited by rotation, is used as a measuring end, the error in the width of the wood in the direction perpendicular to the conveying direction, especially the positive error, must also be taken into account. In this way, when the wood is conveyed, the width margin allows the positive error of the wood to pass smoothly, thereby avoiding the impact of the wood error exceeding the limit on the device, and also ensuring the smooth progress of the sawing operation.

[0049] In this embodiment, a knob 400 is also included. The knob 400 is rotatably disposed on the mounting base 100 at a certain angle, and its outer peripheral wall has a linkage part 410 that abuts against the actuating linkage 300. This linkage part is used to move the actuating linkage 300 a certain distance, while the knob rotation is limited to the actuating linkage 300 after the movement so that the knob maintains the position after rotation.

[0050] Specifically, the driving structure of the toggle lever 300 can be driven by the linkage part 410 on the outer periphery of the knob 400. In this case, the linkage part 410 functions somewhat like a cam, but the linkage part 410 shown in the figure is only partially located in the continuous groove on the outer peripheral wall of the knob 400. Therefore, the relative radial difference between the inner and outer peripheral parts of the groove can serve as a structure to push the toggle lever 300 outward. After the knob 400 is turned, the linkage part 410 can push the toggle lever 300 to link the anti-reverse member 200 to overcome the elastic force of the elastic member and make the anti-reverse member 200 swing forward to the position of abutting the toggle lever 300. At this time, under the action of the elastic member, the force-bearing end of the toggle lever 300 will also press against the linkage part 410 on the outer peripheral wall of the knob 400, so that it obtains a resistance to maintain the position after being turned. At this time, the knob 400 can be turned in the opposite direction by hand to return it to the initial position under the action of external force, that is, the anti-reverse state after switching.

[0051] In this embodiment, the mounting base 100 includes an adjustable base 110 and an end base 120 that are detachably connected. The end base 120 can be flipped and installed on the adjustable base 110. Meanwhile, the elastic member and the anti-reverse member 200 are installed on the end base 120 to make the anti-reverse structure of the device applicable to both sides of the wood to be cut.

[0052] Specifically, the sawing equipment itself has a positioning device for abutting one side of the wood to be cut, and this device is set on the other side of the wood, that is, the opposite side of the positioning device. At the same time, since different carpenters may have different dominant hands, such as left hand or right hand, this device may be installed on the left or right side of the positioning device. Therefore, the end seat 120 with the anti-reverse structure adopts a detachable and flip-mounted structure, which is used to keep the structure in the same anti-reverse direction by disassembling and flipping the end seat 180 degrees when using it on the other side. In addition, according to the figure, among the two detachable structures, the end seat 120 has a unique corresponding installation relationship with the adjusting seat 110 after flipping.

[0053] In this embodiment, the mounting base 100 includes an adjusting base 110 and a fixed base 130. The adjusting base 110 is movably and adjustably disposed on the fixed base 130. An adjusting ruler 111 is provided on the adjusting base 110 along the moving direction. The adjusting ruler 111 is movably and adjustably disposed on the adjusting base 110. The fixed base 130 is provided with an indicator mark 131 that cooperates with the scale line of the adjusting ruler 111.

[0054] Specifically, when the fixing seat 130 is fixed to the sawing equipment, the knob 400 can be turned upwards to restrict the rotation of the stop end 210. Then, the adjusting seat 110 is adjusted so that the outer end of the stop end 210 is parallel to one side of the saw blade. At this time, the adjusting scale 111 can be adjusted so that its zero mark is aligned with the indicator mark 131. Then, according to the sawing size, the adjusting seat 110 is adjusted back so that the indicator mark 131 is aligned with the sawing size. At this time, the distance between the stop end 210 and the saw blade is the sawing size. That is, the adjusting scale 111 adopts an adjustable structure, which makes it easy to align the zero mark with the indicator mark 131, making it easy to read and adjust, and avoiding the inconvenience of calculation and adjustment caused by the non-integer reading of the indicator mark 131. In addition, the adjusting structure of the adjusting scale 111 itself can adopt an adjusting structure composed of an adjusting wheel 500, a lead screw, and a lead nut. For the specific adjustment structure of the lead screw itself, please refer to the existing technology, which will not be elaborated here.

[0055] In this embodiment, the scale line includes one or more zero scale lines arranged at intervals, and the reading of the scale line gradually increases from the zero scale line towards the wood to be cut.

[0056] Specifically, when using multiple spaced zero-scale lines, it is convenient to move and adjust nearby zero-scale lines to align with the indicator mark 131. When using this device for measurement, first, the stop end 210 is swung forward to the limit position via the knob 400 and the lever 300. Then, the adjusting seat 110 is moved upwards so that the stop end 210 abuts against one side of the saw blade. Next, the zero-scale line of the adjusting ruler 111 is adjusted to align with the indicator mark 131. Finally, the adjusting seat 110 is moved back to determine the sawing width. When the adjusting seat 110 moves the adjusting ruler 111 back, the indicator mark 131 moves to the right relative to the adjusting ruler 111 (relatively speaking, it does not actually move). Therefore, the direction of the increase in the scale reading (that is, from left to right) is consistent with the direction of relative movement of the indicator mark 131. In this way, when the adjusting seat 110 is moved back, the size to be cut can be directly indicated by the indicator mark 131, thus eliminating the need to record the initial scale (or even non-integer scale), the final scale, and calculate the scale difference.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-rebound auxiliary cutting device, characterized in that, It includes a mounting base (100), an elastic element and at least one anti-reverse element (200), and also includes a toggle link (300); The anti-reverse component (200) is mounted on the mounting base (100) and can swing back and forth at a certain angle. One end of the anti-reverse component protrudes from the mounting base (100) and serves as the anti-reverse end (210). The contact surface between the anti-reverse end (210) and the wood to be cut is provided with a friction structure. When the stop end (210) is in the initial position of swinging, the initial angle between it and the feeding direction of the wood to be cut is a right angle or an obtuse angle, which is used to make the stop end (210) swing forward under the drive of the wood to be cut on one side. The elastic element is disposed between the anti-reverse element (200) and the mounting base (100) to cause the anti-reverse end (210) to be subjected to a backward swinging force and to abut against one side of the wood to be cut in order to prevent it from rebounding. The actuating linkage (300) is movably disposed on the mounting base (100) and disposed on the anti-reverse member (200), for linkage to swing the anti-reverse member (200) forward at a certain angle, and the anti-reverse member (200) is positioned at the actuating linkage (300) or the mounting base (100) at the rear limit of the forward swing. The actuating linkage (300) is slidably disposed on the mounting base (100), and includes a linkage portion (310) and an actuating portion (320) protruding from one side of the linkage portion (310). The actuating portion (320) abuts against one side of the anti-reverse member (200), for actuating the anti-reverse member (200) to swing forward at a certain angle; the anti-reverse member (200) is positioned at the rear limit of the forward swing of the linkage portion (310).

2. The anti-rebound auxiliary cutting device according to claim 1, characterized in that, The contact surface of the stop end (210) is curved.

3. The anti-rebound auxiliary cutting device according to claim 1, characterized in that, The friction structure adopts a toothed pattern.

4. The anti-rebound auxiliary cutting device according to claim 1, characterized in that, When the anti-reverse component (200) is positioned at the rear limit of the actuating link (300), the anti-reverse end (210) swings forward at an angle less than its maximum swing angle under the linkage of the actuating link (300).

5. The anti-rebound auxiliary cutting device according to any one of claims 1-4, characterized in that, It also includes a knob (400), which is rotatably disposed on the mounting base (100) at a certain angle, and its outer peripheral wall has a linkage part (410) that abuts against the actuating link (300) for linkage to move the actuating link (300) a certain distance, while the knob (400) is rotated and limited to the moved actuating link (300) so that the knob (400) maintains the rotated position.

6. The anti-rebound auxiliary cutting device according to claim 5, characterized in that, The mounting base (100) includes a detachably connected adjusting base (110) and an end base (120), and the end base (120) is flip-mounted on the adjusting base (110). Meanwhile, the elastic element and the anti-reverse element (200) are mounted on the end base (120) to make the anti-reverse element of the device applicable to both sides of the wood to be cut.

7. The anti-rebound auxiliary cutting device according to claim 6, characterized in that, The mounting base (100) includes an adjusting base (110) and a fixed base (130), wherein the adjusting base (110) is movably and adjustably disposed on the fixed base (130). The adjusting seat (110) is provided with an adjusting ruler (111) along the moving direction. The adjusting ruler (111) is movably and adjustablely set on the adjusting seat (110). The fixed seat (130) is provided with an indicator mark (131) that matches the scale line of the adjusting ruler (111).

8. The anti-rebound auxiliary cutting device according to claim 7, characterized in that, The scale lines include one or more zero scale lines spaced apart, and the readings of the scale lines gradually increase from the zero scale line toward the wood to be cut.

Images