Plasma cutting auxiliary device

Abstract

This disclosure relates to a plasma cutting auxiliary device, which includes a slide rail, a slider, and a plasma gun sleeve. The slide rail is configured to be fixed to the workpiece to be cut. The slider is slidably mounted on the slide rail and configured to move linearly along the slide rail under the action of an external force. The plasma gun sleeve is detachably fixedly connected to the slider and has a mounting through hole, configured to mount the plasma gun through the mounting through hole. The slider has at least two connection positions. When the plasma gun sleeve and the slider are connected through a first connection position, the center line of the mounting through hole forms a first preset angle α with the surface to be cut. When the plasma gun sleeve and the slider are connected through a second connection position, the center line of the mounting through hole forms a second preset angle β with the surface to be cut. The angle of the first preset angle α is smaller than the angle of the second preset angle β.

Description

Technical Field

[0001] This disclosure relates to the field of mechanical cutting and processing technology, and in particular to a plasma cutting auxiliary device. Background Technology

[0002] Plasma cutting is a process that uses a high-temperature plasma arc to melt metal and then cut it. It is widely used due to its high efficiency and economy.

[0003] Currently, plasma cutting mainly relies on manual hand-held operation, which requires high technical skills from the operator. Especially when cutting vertically or on different bevels, it is difficult to achieve a straight cut surface, which brings great difficulty to the subsequent butt welding work.

[0004] Currently, there are auxiliary devices for plasma cutting. For example, Chinese utility model patent application number "202121735905.5", entitled "Plasma Cutting Auxiliary Fixture", discloses a plasma cutting auxiliary fixture, including a plasma slide plate and a base. The plasma slide plate and the base are hinged together by a hinge joint, and the angle between the plasma slide plate and the base is adjusted by adjusting bolts to adjust the cutting angle. However, angle adjustment is cumbersome and relies on protractor equipment, still placing technical demands on the operator. In actual operation, continuous angle adjustment is rarely used; most cutting operations require specific preset angles.

[0005] Therefore, there is a need in this field for an efficient, convenient, and easy-to-use plasma cutting auxiliary device. Utility Model Content

[0006] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a plasma cutting auxiliary device.

[0007] The plasma cutting auxiliary device disclosed herein includes:

[0008] A slide rail, which is configured to be fixed to the workpiece to be cut;

[0009] A slider is slidably mounted on a slide rail and is configured to move linearly along the slide rail under the action of an external force;

[0010] A plasma gun sleeve is detachably fixedly connected to the slider. The plasma gun sleeve is provided with a mounting through hole and is configured to mount a plasma gun through the mounting through hole.

[0011] The slider has at least two connection positions. When the plasma gun sleeve is connected to the slider through the first connection position, the center line of the mounting through hole forms a first preset angle α with the surface to be cut.

[0012] When the plasma gun sleeve and the slider are connected through the second connection position, the center line of the mounting through hole forms a second preset angle β with the surface to be cut;

[0013] The angle of the first preset included angle α is smaller than the angle of the second preset included angle β.

[0014] In one embodiment of this disclosure, the slider is provided with a connector, the connector having at least two slopes, the first slope forming a first preset angle α with the surface to be cut, and the second slope forming a second preset angle β with the surface to be cut;

[0015] When the plasma gun sleeve and the slider are connected at the first connection position, the center line of the mounting through hole is parallel to the first slope surface;

[0016] When the plasma gun sleeve and the slider are connected at the second connection position, the center line of the mounting through hole is parallel to the second slope.

[0017] In one embodiment of this disclosure, the first preset included angle α is 45° and the second preset included angle β is 90°.

[0018] In one embodiment of this disclosure, the first preset included angle α is 30° and the second preset included angle β is 60°.

[0019] In one embodiment of this disclosure, the first slope and the second slope are disposed on the same side or opposite side of the top of the connector.

[0020] In one embodiment of this disclosure, a connecting plate is provided on the peripheral wall of the mounting through hole of the plasma gun sleeve, extending along the center line of the mounting through hole, and the plasma gun sleeve is detachably and fixedly connected to the slope surface through the connecting plate.

[0021] In one embodiment of this disclosure, the plasma gun shroud further includes a support frame fixedly connected to the mounting through hole, and the bottom of the support frame is provided with a support wheel, which is configured to roll on the surface to be cut.

[0022] In one embodiment of this disclosure, the slide rail is provided with a plurality of magnetically conductive fixing members at intervals along its length. The magnetically conductive fixing members are embedded through the slide rail and are configured to fix the slide rail and the workpiece to be cut relative to each other by means of magnets.

[0023] In one embodiment of this disclosure, the magnetically conductive fixing member is an iron column.

[0024] In one embodiment of this disclosure, the slide rail, slider, and connector are aluminum alloy slide rail, aluminum alloy slider, and aluminum alloy connector.

[0025] One beneficial effect of the plasma cutting auxiliary device disclosed herein is that the plasma gun sleeve is detachably connected to the slider, and the plasma gun is fixed to the plasma gun sleeve through a mounting through hole. The angle between the centerline of the plasma gun head and the surface to be cut is the same as the angle between the centerline of the mounting through hole and the surface to be cut. Depending on the required cutting angle, when the plasma gun sleeve is connected to the first connection position on the slider, the centerline of the plasma gun head forms a small first preset angle α with the surface to be cut, and the plasma jet emitted by the plasma gun cuts the workpiece at the first preset angle α. When the plasma gun sleeve is connected to the second connection position on the slider, the centerline of the plasma gun head forms a larger second preset angle β with the surface to be cut, and the plasma jet emitted by the plasma gun cuts the workpiece at the second preset angle β. The operator only needs to move the plasma gun along the length of the slide rail, and the plasma gun sleeve drives the slider to move on the slide rail. This ensures a straight cutting surface and eliminates the need to adjust the angle of the device; simply fixing it to the corresponding angled connection position is sufficient to cut a beveled surface at a preset angle. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0027] Figure 1 This is a front view of a plasma cutting auxiliary device provided in one embodiment of this disclosure;

[0028] Figure 2 This is a top view of a plasma cutting auxiliary device provided in one embodiment of the present disclosure;

[0029] Figure 3 This is a schematic diagram of the structure of a connector provided in one embodiment of the present disclosure;

[0030] Figure 4 This is a front view of a connector provided in one embodiment of this disclosure;

[0031] Figure 5 yes Figure 4 Sectional view along the middle AA direction;

[0032] Figure 6 yes Figure 4 Sectional view along the BB direction;

[0033] Figure 7 This is a schematic diagram of the structure of the connector provided in another embodiment of this disclosure;

[0034] Figure 8 This is a front view of a connector provided in another embodiment of this disclosure;

[0035] Figure 9 yes Figure 8 A cross-sectional view along the CC direction;

[0036] Figure 10 yes Figure 8 Sectional view along the DD direction.

[0037] Figures 1-10 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0038] 1-Slide rail; 11-Magnetic fixing component; 2-Slider;

[0039] Plasma gun shroud: 31-Mounting through hole; 32-Connecting plate; 33-Support frame; 34-Support wheel; 4-Connector; 41-First slope; 42-Second slope. Detailed Implementation

[0040] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0041] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0042] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0043] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0045] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0046] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0047] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0048] Existing plasma cutting auxiliary equipment is cumbersome to operate and lacks efficiency and convenience. Therefore, this disclosure provides a plasma cutting auxiliary device. For ease of understanding, please refer to the following... Figures 1-10 The specific structure and working principle of the plasma cutting auxiliary device disclosed herein will be described in detail with reference to the embodiments.

[0049] The plasma cutting auxiliary device disclosed herein includes a slide rail 1, a slider 2, and a plasma gun sleeve. The slide rail 1 is configured to be fixed to the workpiece to be cut. The slider 2 is slidably mounted on the slide rail 1 and is configured to move linearly along the slide rail 1 under the action of an external force. The plasma gun sleeve is detachably fixedly connected to the slider 2 and is provided with a mounting through hole 31, and is configured to mount the plasma gun through the mounting through hole 31. The slider 2 has at least two connection positions. When the plasma gun sleeve and the slider 2 are connected through the first connection position, the center line of the mounting through hole 31 forms a first preset angle α with the surface to be cut. When the plasma gun sleeve and the slider 2 are connected through the second connection position, the center line of the mounting through hole 31 forms a second preset angle β with the surface to be cut. The angle of the first preset angle α is smaller than the angle of the second preset angle β.

[0050] Specifically, refer to Figure 1 , Figure 2 The slide rail 1 is a long, strip-shaped metal track with grooves machined along its length. The slide rail 1 can be fixed to the surface of the metal workpiece to be cut by a magnet; one end of the magnet adheres to the bottom surface of the slide rail 1, and the other end adheres to the surface of the metal workpiece, thus fixing the slide rail 1. The slider 2 is disposed within the groove and can slide linearly on the slide rail 1 using internally installed steel balls, rollers, etc.

[0051] Furthermore, the plasma gun sleeve is detachably connected to the slider 2, specifically by means of screws. The slider 2 has at least two connection positions, each with a threaded hole of the same diameter. Depending on the cutting requirements, when the plasma gun sleeve is connected to the first connection position, the center line of the mounting through hole 31 forms a small first preset angle α with the surface to be cut; when the plasma gun sleeve is connected to the second connection position, the center line of the mounting through hole 31 forms a larger second preset angle β with the surface to be cut.

[0052] The plasma gun tip extends into and passes through the mounting through-hole 31 of the plasma gun sleeve. The plasma gun tip is typically cylindrical. With the nozzle on the tip as the tail end and the connection point between the tip and the gun body as the head end, the diameter of the head end is larger than the diameter of the tail end. The mounting through-hole 31 is a circular through-hole with a diameter larger than but smaller than the diameter of the tail end of the tip, allowing the tip to engage within the mounting through-hole 31 under gravity. The end face of the mounting through-hole 31 along its centerline abuts against the cylindrical end face of the head end of the tip. During operation and cutting, the operator applies external force to the plasma gun to further stabilize the tip within the mounting through-hole 31. The centerline of the plasma gun tip coincides with or is parallel to the centerline of the mounting through-hole 31.

[0053] With this configuration, the angle between the centerline of the plasma gun head and the surface to be cut is the same as the angle between the centerline of the mounting through hole 31 and the surface to be cut. Depending on the required cutting angle, when the plasma gun sleeve is connected to the first connection position, the centerline of the plasma gun head and the surface to be cut form a small first preset angle α. The plasma jet emitted by the plasma gun cuts the workpiece at the first preset angle α. When the plasma gun sleeve is connected to the second connection position, the centerline of the plasma gun head and the surface to be cut form a larger second preset angle β. The plasma jet emitted by the plasma gun cuts the workpiece at the second preset angle β. The operator only needs to move the plasma gun along the length of the slide rail 1. The plasma gun sleeve drives the slider 2 to move on the slide rail 1. This ensures a straight cutting surface and eliminates the need to adjust the angle of the device. Simply fixing the connection position at the corresponding angle is sufficient to cut a beveled surface at a preset angle.

[0054] In one embodiment, the slider 2 is provided with a connector 4, which has at least two slopes. The first slope 41 forms a first preset angle α with the surface to be cut, and the second slope 42 forms a second preset angle β with the surface to be cut. When the plasma gun sleeve and the slider 2 are connected through the first connection position, the center line of the mounting through hole 31 is parallel to the opposite plane of the first slope 41. When the plasma gun sleeve and the slider 2 are connected through the second connection position, the center line of the mounting through hole 31 is parallel to the opposite plane of the second slope 42.

[0055] Specifically, refer to Figures 3-6 The connector 4 is a metal profile that is easy to process. The connector 4 is detachably fixed to the top of the slider 2, specifically by means of screw connection. The top of the connector 4 is provided with at least two bevels, corresponding to two connection positions respectively, and threaded holes are provided on the bevels. The center line of the mounting through hole 31 is set parallel to the bevel. Furthermore, the angle between the bevel and the surface to be cut is the cutting angle of the plasma gun.

[0056] Depending on the cutting requirements, when a smaller first preset angle needs to be cut, the plasma gun sleeve is fixed to the first slope 41; when a larger second preset angle needs to be cut, the plasma gun sleeve is fixed to the second slope 42. The cutting angle of the plasma gun can be controlled by controlling the slope angle. By processing multiple preset angle connectors 4, more cutting angles can be achieved.

[0057] A third slope and a fourth slope can be set on a connector 4, which correspond to a third preset angle and a fourth preset angle, respectively. The angle of the third preset angle is greater than the angle of the second preset angle β, but less than the angle of the fourth preset angle. As long as the plasma gun sleeve is fixed to different slopes by screws, the preset angle can be changed very easily.

[0058] In another embodiment, since the connector 4 is small in size, only two bevels are machined on one connector 4. Different bevel angles can be set on different connectors 4. The preset angle can also be changed very conveniently by replacing the connector 4 with screws.

[0059] In one embodiment, the first preset included angle α is 45° and the second preset included angle β is 90°.

[0060] Specifically, refer to Figures 7-10 90° is the most basic and stable angle. In building frames, furniture, and box structures, right-angle connections provide maximum rigidity and load-bearing capacity. Boards cut to right-angle edges can be seamlessly spliced ​​to form sturdy rectangular or square structures. This is the key angle for achieving right-angle splicing. Another example is 45°, which can be spliced ​​to 90°. Two boards, each cut at a 45° bevel, are joined to form a 90° angle, commonly used for picture frames, door frames, window frames, photo frames, and tabletop edging.

[0061] In another embodiment, the first preset included angle α is 30° and the second preset included angle β is 60°.

[0062] Specifically, refer to Figures 3-6 30° and 60° angles can not only be used to join 90° angles, but are also closely related to equilateral triangles and hexagons. Cutting at these angles can efficiently create shapes with high symmetry and structural stability. Therefore, in actual processing, special cutting angles are highly versatile, eliminating the need for continuous adjustment of the plasma gun's cutting angle. This not only makes them easy to implement but also reduces the technical requirements for operators.

[0063] In one embodiment, the first slope 41 and the second slope 42 are disposed on the same side or opposite side of the top of the connector 4.

[0064] Specifically, the first slope 41 and the second slope 42 can be set on the same side of the top of the connector 4, so that the operator's cutting operation habits are consistent and there is no need to change the cutting direction, which makes it convenient for the operator to use.

[0065] In addition, the first slope 41 and the second slope 42 can also be set on opposite sides of the top of the connector 4, and the slope is set at the center line of the connector 4. When the operator applies external force to the plasma gun, the force of the plasma gun sleeve on the slider 2 falls on the center of one side of the slider 2, making the sliding process more stable.

[0066] In one embodiment, a connecting plate 32 is provided on the peripheral wall of the mounting through hole 31 of the plasma gun sleeve, extending along the center line of the mounting through hole 31, and the plasma gun sleeve is detachably fixedly connected to the slope surface through the connecting plate 32.

[0067] Specifically, a rectangular connecting plate 32 extends along the centerline of the mounting through-hole 31 from the peripheral wall of the mounting through-hole 31. The connecting plate 32 has a fixing through-hole, the centerline of which is perpendicular to the centerline of the mounting through-hole 31. A screw passes through the fixing through-hole and is fixedly connected to a threaded hole on the slope. The centerline of the fixing through-hole is perpendicular to the slope, thus ensuring that the centerline of the mounting through-hole 31 is parallel to the slope. Furthermore, the angle between the slope and the surface to be cut is the cutting angle of the plasma gun. With this configuration, the cutting angle of the plasma gun can be controlled by controlling the slope angle, enabling the operation of cutting angles at a wider range.

[0068] In one embodiment, the plasma gun shroud also includes a support frame 33 fixedly connected to the mounting through hole 31, and a support wheel 34 is provided at the bottom of the support frame 33, which is configured to roll on the surface to be cut.

[0069] Specifically, the support frame 33 is rectangular and extends along the centerline of the mounting through hole 31. It is positioned opposite the connecting plate 32 on the opposite side of the mounting through hole 31. A support wheel 34, which rolls on the cutting surface, is located at the bottom of the support frame 33. In actual operation, when the operator applies external force to the plasma gun, the plasma gun sleeve is only fixedly connected via the slope of the connecting plate 32 and the connecting piece 4, leaving its opposite side suspended. The connecting plate 32 may deform under external force, further affecting the offset of the centerline of the mounting through hole 31, causing the plasma gun's cutting direction to be inconsistent with the slope. By setting the support frame 33 on the opposite side of the mounting through hole 31, the plasma gun sleeve will not deform under external force, ensuring that the plasma gun's cutting direction remains consistent with the slope. The support wheel 34 at the bottom of the support frame 33 allows the slider 2 to slide synchronously with the workpiece surface, reducing the impact of friction on the movement of the plasma gun.

[0070] In one embodiment, the slide rail 1 is provided with a plurality of magnetically conductive fixing members 11 at intervals along its length. The magnetically conductive fixing members 11 are embedded through the slide rail 1 and are configured to fix the slide rail 1 relative to the workpiece to be cut by means of magnets.

[0071] Specifically, slots are made every 150-300mm along the length of the slide rail 1. Magnetic fixing parts 11 are press-fitted in using an interference fit. Two magnets are located at both ends of the slide rail 1, one side attracting the workpiece, and the opposite side attracting the magnetic fixing parts 11, thus fixing the slide rail 1 to the workpiece to be cut. The closer to the magnet's attraction point, the better the fixing effect. This is understandable; if the applied force is too far from the magnet's attraction point, the slide rail 1 may shift. Therefore, for the cutting distance, the distance between the two magnets is slightly larger than the cutting distance, resulting in a better fixing effect between the slide rail 1 and the workpiece.

[0072] In one embodiment, the magnetically conductive fixing member 11 is an iron column.

[0073] Specifically, iron pillars are easy to process, readily available, and inexpensive. As a magnetically conductive fixing component 11, they have good magnetic conductivity and can ensure a good fixing effect between the slide rail 1 and the workpiece.

[0074] In one embodiment, the slide rail 1, the slider 2, and the connector 4 are aluminum alloy slide rails, aluminum alloy sliders, and aluminum alloy connectors.

[0075] Specifically, the density of pure aluminum is 2.7 g / cm³. 3 Aluminum alloys are strengthened by adding other elements, but their density remains relatively low, with the density of most aluminum alloys ranging from 2.65 to 2.85 g / cm³. 3 Between these values, the density of steel is 7.8 g / cm³. 3 The density of aluminum alloy is only 34%-37% of that of steel, which greatly reduces the weight of slide rail 1, slider 2, and connector 4, achieving a lightweight design for the plasma cutting auxiliary device. This facilitates equipment portability and also makes manual operation easier. Aluminum alloy is easy to process, making it convenient to machine the beveled surface of connector 4 and the threaded holes of slider 2.

[0076] Furthermore, to facilitate better understanding, the following section will describe in detail the usage process of the plasma cutting auxiliary device disclosed herein, taking into account its actual application scenarios.

[0077] 1. Based on the required cutting distance, use two magnets to attach to both ends of the slide rail 1 and the workpiece respectively;

[0078] 2. According to the required cutting angle, fix the plasma gun sleeve to a slope of the connector 4 with screws. The connector 4 is fixed to the slider 2 with screws.

[0079] 3. Insert the plasma gun tip into the mounting through hole 31 of the plasma gun sleeve and start cutting. At the same time, move the plasma gun along the length of the slide rail 1 until the cutting is completed.

[0080] 4. When it is necessary to change the cutting angle, replace the slope of the plasma gun sleeve connection or replace connector 4, and then repeat step 3 to complete the cutting.

[0081] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A plasma cutting assist device, comprising: The plasma cutting auxiliary device includes: A slide rail (1) is configured to be fixed to the workpiece to be cut; The slider (2) is slidably disposed on the slide rail (1) and is configured to move linearly along the slide rail (1) under the action of an external force; Plasma gun sleeve, which is detachably fixedly connected to the slider (2), the plasma gun sleeve is provided with a mounting through hole (31) and is configured to mount the plasma gun through the mounting through hole (31); The slider (2) has at least two connection positions. When the plasma gun sleeve is connected to the slider (2) through the first connection position, the center line of the mounting through hole (31) forms a first preset angle α with the surface to be cut. When the plasma gun sleeve is connected to the slider (2) through the second connection position, the center line of the mounting through hole (31) forms a second preset angle β with the surface to be cut; The angle of the first preset included angle α is smaller than the angle of the second preset included angle β.

2. The plasma cutting assist of claim 1, wherein, The slider (2) is provided with a connector (4), the connector (4) has at least two slopes, the first slope (41) forms a first preset angle α with the surface to be cut, and the second slope (42) forms a second preset angle β with the surface to be cut; When the plasma gun sleeve and the slider (2) are connected through the first connection position, the center line of the mounting through hole (31) is parallel to the first slope (41); When the plasma gun sleeve and the slider (2) are connected through the second connection position, the center line of the mounting through hole (31) is parallel to the second slope (42).

3. The plasma cutting assist of claim 2, wherein, The first preset included angle α is 45°, and the second preset included angle β is 90°.

4. The plasma cutting assist of claim 2, wherein, The first preset included angle α is 30°, and the second preset included angle β is 60°.

5. The plasma cutting assist of claim 3 or 4, wherein, The first slope (41) and the second slope (42) are located on the same side or opposite side of the top of the connector (4).

6. The plasma cutting assist of claim 5, wherein, A connecting plate (32) is provided on the peripheral wall of the mounting through hole (31) of the plasma gun sleeve, extending along the center line of the mounting through hole (31). The plasma gun sleeve is detachably and fixedly connected to the slope through the connecting plate (32).

7. The plasma cutting assist of claim 6, wherein, The plasma gun shroud also includes a support frame (33) fixedly connected to the mounting through hole (31), and a support wheel (34) is provided at the bottom of the support frame (33), which is configured to roll on the surface to be cut.

8. The plasma cutting assist of claim 7, wherein, The slide rail (1) is provided with a plurality of magnetic fixing parts (11) spaced apart along its length. The magnetic fixing parts (11) are embedded in the slide rail (1) and are configured to fix the slide rail (1) and the workpiece to be cut relative to each other by means of magnets.

9. The plasma cutting assist of claim 8, wherein, The magnetically conductive fixing component (11) is an iron column.

10. The plasma cutting auxiliary device according to claim 9, characterized in that, The slide rail (1), slider (2), and connector (4) are aluminum alloy slide rail, aluminum alloy slider, and aluminum alloy connector.

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