A wire rack plasma cutting device

Abstract

The application provides a metal wire frame plasma cutting device, and belongs to the technical field of metal processing equipment, which comprises a cutting table, a support frame and a cutting mechanism. The support frame is provided with support plates fixed to the left and right ends of the cutting table, and two guide rails are installed between the two support plates. The cutting mechanism comprises a sliding block slidingly connected to the guide rails, a mounting frame, a cutting head arranged on the front side of the mounting frame, and a mounting frame fixed to the rear end of the mounting frame through a first connecting plate. A driving assembly is arranged in the mounting frame, and a braking assembly is symmetrically arranged on both sides of the rear end of the mounting frame. The braking assembly comprises a sleeve, a touch rod telescopically connected to the sleeve, a friction block arranged at the top end of the touch rod, and a roller arranged at the bottom end of the touch rod. The braking assembly is matched with a wedge-shaped block and an inclined sliding groove arranged at both ends of the toothed plate. When the roller rises along the inclined sliding groove, the friction block is tightly abutted against the bottom surface of the guide rail to realize friction deceleration. The application solves the problems of existing cutting devices, such as easy failure of electrical limiting, lack of physical buffering and mechanical warning, and improves the operation reliability.

Description

Technical Field

[0001] This invention relates to the field of metal processing equipment technology, and in particular to a metal wire frame plasma cutting device. Background Technology

[0002] Metal cable trays are widely used support structures in communication equipment rooms, data centers, and outdoor cable laying scenarios. They are typically made of metal sheets, cut and stamped into U-shaped or C-shaped frames, and are characterized by lightweight, high strength, and ease of cable fixing. In the production process of these metal cable trays, large metal sheets need to be cut into several thin strips of a predetermined width to provide blanks for subsequent stamping. Plasma cutting equipment is widely used due to its fast cutting speed, small heat-affected zone, and suitability for metal sheet processing.

[0003] However, the stroke control of existing cutting devices of this type generally relies on electrical limit switches or program limits of servo motors. Once the limit switch fails due to dust contamination or aging of the circuit, or the control program has a logical error due to electromagnetic interference, the cutting head is very likely to exceed the designed stroke and violently hit the side plate at the end of the support, resulting in serious failures such as damage to the cutting head and breakage of gears and racks. In addition, the electrical limit scheme lacks physical buffering ability, cannot decelerate before impact, and cannot give obvious mechanical warnings when failure occurs, making it difficult for operators to detect in time. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is to provide a metal wire frame plasma cutting device that can realize mechanical stroke limit, deceleration buffer and fault warning of the cutting head without the need for electrical components.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a metal wire frame plasma cutting device, comprising: Cutting table; A support frame installed on the cutting table surface, the support frame including support plates fixedly installed at the left and right ends of the upper surface of the cutting table, and two guide rails fixedly installed between the two support plates; and, The cutting mechanism includes two sets of sliders slidably connected to the two guide rails. Each set of sliders has two sliders. A mounting frame is fixedly installed on the outer side of the four sliders. A cutting head is provided on the front side of the mounting frame, and the output end of the cutting head faces the cutting table surface. A mounting frame is fixedly connected to the rear end of the mounting frame through a first connecting plate. A driving component is provided inside the mounting frame. Braking components are symmetrically arranged on the left and right sides of the mounting frame at the rear end of the mounting frame.

[0008] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, a fixing plate is fixedly installed on the upper side of the bottom guide rail, a toothed plate is fixedly installed on the upper surface of the fixing plate, and wedge-shaped blocks are symmetrically installed at the left and right ends behind the toothed plate.

[0009] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, the driving component includes a servo motor fixedly installed at the center of the mounting frame, the output end of the servo motor is connected to a rotating shaft via a coupling, and a gear is fixedly installed at the front end of the rotating shaft, and the gear is meshed with the gear plate.

[0010] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, the braking assembly includes a second connecting plate fixedly connected to the rear wall of the mounting frame, a sleeve fixedly installed at the rear end of the second connecting plate, a contact rod telescopically connected inside the sleeve, the top end of the contact rod penetrating the top wall of the sleeve and extending above it to be fixedly connected to a friction block, and a roller fixedly installed at the bottom end of the contact rod, and the roller is rotatably connected to the surface of the fixed plate.

[0011] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, a limiting block is fixedly installed in the middle of the contact rod, and the limiting block is slidably connected inside the sleeve. A telescopic spring is fixedly connected to the upper side of the limiting block, and the telescopic spring is sleeved on the outer side of the contact rod. The top end of the telescopic spring is fixedly connected to the inner top wall of the sleeve.

[0012] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, the upper surface of the friction block is provided with a groove, which is adapted to the bottom surface of the upper guide rail; when the contact rod is pushed upward, the friction block can abut against the bottom surface of the guide rail through the groove, and the bottom surface of the guide rail can abut against the side wall of the groove.

[0013] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, the two wedge blocks are provided with inclined grooves adapted to the rollers on their opposite surfaces, and the inclined grooves gradually extend upward from the ends of the wedge blocks inward.

[0014] In a preferred embodiment of the metal wire frame plasma cutting device of the present invention, when the roller moves into the inclined slide groove, the roller gradually moves upward along the inclined direction of the inclined slide groove, thereby lifting the contact rod and the friction block upward.

[0015] The beneficial effects of this invention are: 1. The limit braking is achieved by a purely mechanical structure, without relying on electrical components. It is resistant to dust and electromagnetic interference, and completely solves the problem of electrical limit failure.

[0016] 2. Automatic friction deceleration and buffering at the end of the stroke avoids hard impacts and effectively protects the cutting head, gears, racks and frame.

[0017] 3. Bidirectional symmetrical braking, reliable limit protection can be achieved in both left and right reciprocating motions.

[0018] 4. It has a compact structure, low cost, requires no additional power source, operates stably, and is easy to maintain.

[0019] 5. The braking action is visualized, providing a mechanical warning effect and making it easy for operators to detect abnormalities in a timely manner. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a three-dimensional enlarged front view of the cutting mechanism and support frame of the present invention; Figure 3 This is a three-dimensional enlarged rear view of the cutting mechanism and support frame of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A; Figure 5 This is a three-dimensional enlarged top view of the connection between the cutting mechanism and the support frame of the present invention; Figure 6 This is a perspective sectional view of the braking component of the present invention; Figure 7 This is a magnified bottom view of the connection between the cutting mechanism and the support frame of the present invention. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example Referring to the figures, this embodiment provides a metal wire frame plasma cutting apparatus, including a cutting table 100 for supporting metal sheets. A support frame 200 is mounted on the table surface of the cutting table 100. The support frame 200 consists of support plates 201 fixedly mounted at both ends of the upper surface of the cutting table 100. Two parallel guide rails 202 are fixedly mounted horizontally between the two support plates 201. A fixing plate 203 is also fixedly mounted on the upper side of the lower guide rail 202. A toothed plate 204 is fixedly mounted on the upper surface of the fixing plate 203. The toothed plate 204 is used to mesh with a drive gear to transmit power. Furthermore, wedge blocks 205 are symmetrically mounted at both ends behind the toothed plate 204. The wedge blocks 205 are used to trigger a braking action when the cutting head moves to its limit position.

[0025] The cutting mechanism 300 is slidably connected to the two guide rails 202. Specifically, the cutting mechanism 300 includes two sets of sliders 301 that are slidably engaged with the two guide rails 202, with two sliders in each set, and the four sliders 301 together fix and support a mounting frame 302. A cutting head 303 is provided on the front side of the mounting frame 302 facing the table surface of the cutting table 100. The output end of the cutting head 303 is vertically downward and aligned with the table surface of the cutting table 100 for plasma cutting of the metal sheet placed on the cutting table 100.

[0026] A mounting frame 305 is fixedly connected to the rear end of the mounting bracket 302 via a first connecting plate 304. A drive assembly 306 is installed inside the mounting frame 305 to drive the entire cutting mechanism 300 to move horizontally back and forth along the guide rail 202. At the same time, two sets of braking assemblies 307 are symmetrically arranged at the rear end of the mounting bracket 302 and on the left and right sides of the mounting frame 305 to achieve mechanical limiting, deceleration buffering, and fault warning when the cutting head 303 moves to the end of its stroke.

[0027] The drive assembly 306 includes a servo motor 306a fixedly mounted at the center of the mounting frame 305. The output end of the servo motor 306a is connected to a rotating shaft 306b via a coupling. A gear 306c is fixedly mounted at the front end of the rotating shaft 306b, and the gear 306c meshes with the aforementioned gear plate 204. When the servo motor 306a starts, the gear 306c rolls on the gear plate 204. Since the gear plate 204 is stationary, the reaction force of the gear 306c pushes the entire mounting frame 305, mounting bracket 302, and cutting head 303 to move horizontally along the guide rail 202, thereby achieving continuous cutting of the metal sheet.

[0028] Each braking assembly 307 includes a second connecting plate 307a fixedly connected to the rear wall of the mounting bracket 302. A vertically oriented sleeve 307b is fixedly installed at the rear end of the second connecting plate 307a. A contact rod 307c is telescopically connected inside the sleeve 307b. The top end of the contact rod 307c penetrates the top wall of the sleeve 307b and extends above it, and a friction block 307d is fixedly connected to the top end. A roller 307e is fixedly installed at the bottom end of the contact rod 307c. The roller 307e is always tumblingly connected to the upper surface of the fixed plate 203 and moves together with the cutting mechanism 300. A limiting block 307f is fixedly installed in the middle of the contact rod 307c. The limiting block 307f is slidably connected inside the sleeve 307b. A telescopic spring 307g is fixedly connected to the upper side of the limiting block 307f. The telescopic spring 307g is sleeved on the outside of the contact rod 307c, and its top end is fixedly connected to the inner top wall of the sleeve 307b. Under the elastic force of the telescopic spring 307g, the contact rod 307c maintains a downward extension tendency under normal conditions, so that the roller 307e is always in contact with the surface of the fixed plate 203, while the friction block 307d remains separated from the upper guide rail 202.

[0029] A groove 307d1 is formed on the upper surface of the friction block 307d, the shape of which is adapted to the bottom surface of the upper guide rail 202. When the contact rod 307c is pushed upward, the friction block 307d rises accordingly, and its groove 307d1 abuts against the bottom surface of the guide rail 202. Furthermore, the bottom surface of the guide rail 202 tightly abuts against the two side walls of the groove 307d1, thereby generating significant frictional resistance and acting as a deceleration buffer for the moving cutting mechanism 300. This design cleverly utilizes the principles of mechanical deformation and contact surface interference to achieve dynamic response control of the cutting mechanism's motion state without adding an additional power source. The tight abutment between the side walls of the groove 307d1 and the bottom surface of the guide rail 202 not only improves the stability of the frictional force but also effectively suppresses gap jitter caused by vibration, ensuring a smooth and reliable deceleration process.

[0030] Both wedge-shaped blocks 205 have oblique grooves 205a on their opposite surfaces that are adapted to the roller 307e. Each oblique groove 205a extends gradually upward from the end of the wedge-shaped block 205 inward. When the cutting mechanism 300 moves to the support plate 201 near the left or right end, the roller 307e enters the oblique groove 205a on the corresponding side wedge-shaped block 205. As the roller 307e rolls upward along the oblique direction of the oblique groove 205a, the contact rod 307c and the friction block 307d at its top are pushed upward together, overcoming the elastic force of the telescopic spring 307g, and finally pressing the groove 307d1 on the friction block 307d tightly against the bottom surface of the guide rail 202 above, achieving mechanical deceleration and buffering. Meanwhile, since the upward movement of the contact rod 307c is entirely mechanically triggered without any electrical signal, it can reliably prevent the cutting head 303 from overtravel impact even in the event of electrical limit failure. Furthermore, the upward movement itself can serve as a clear mechanical warning – the operator can determine whether the cutting head has reached its limit position by observing whether the friction block 307d is raised or by hearing a friction sound.

[0031] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0032] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A metal wire frame plasma cutting device, characterized in that, include: Cutting table (100); A support frame (200) is installed on the surface of the cutting table (100). The support frame (200) includes support plates (201) fixedly installed at the left and right ends of the upper surface of the cutting table (100), and two guide rails (202) are fixedly installed between the two support plates (201); and, The cutting mechanism (300) includes two sets of sliders (301) slidably connected to two guide rails (202). Each set of sliders (301) has two sliders. A mounting frame (302) is fixedly installed on the outer side of the four sliders (301). A cutting head (303) is provided on the front side of the mounting frame (302), and the output end of the cutting head (303) faces the table surface of the cutting table (100). A mounting frame (305) is fixedly connected to the rear end of the mounting frame (302) through a first connecting plate (304). A driving component (306) is provided inside the mounting frame (305). Braking components (307) are symmetrically arranged on the rear end of the mounting frame (302) and on the left and right sides of the mounting frame (305).

2. The metal wire frame plasma cutting apparatus as described in claim 1, characterized in that: A fixing plate (203) is fixedly installed on the upper side of the bottom guide rail (202), and a toothed plate (204) is fixedly installed on the upper surface of the fixing plate (203). Wedge-shaped blocks (205) are symmetrically installed on the left and right ends behind the toothed plate (204).

3. The metal wire frame plasma cutting apparatus as described in claim 2, characterized in that: The drive assembly (306) includes a servo motor (306a) fixedly installed at the center of the mounting frame (305). The output end of the servo motor (306a) is connected to a rotating shaft (306b) via a coupling. A gear (306c) is fixedly installed at the front end of the rotating shaft (306b), and the gear (306c) is meshed with the gear plate (204).

4. The metal wire frame plasma cutting apparatus as described in claim 3, characterized in that: The braking assembly (307) includes a second connecting plate (307a) fixedly connected to the rear wall of the mounting bracket (302). A sleeve (307b) is fixedly installed at the rear end of the second connecting plate (307a). A contact rod (307c) is telescopically connected inside the sleeve (307b). The top end of the contact rod (307c) penetrates the top wall of the sleeve (307b) and extends above it to be fixedly connected to a friction block (307d). A roller (307e) is fixedly installed at the bottom end of the contact rod (307c), and the roller (307e) is tactilely connected to the surface of the fixed plate (203).

5. The metal wire frame plasma cutting apparatus as described in claim 4, characterized in that: A limiting block (307f) is fixedly installed in the middle of the contact rod (307c), and the limiting block (307f) is slidably connected inside the sleeve (307b). A telescopic spring (307g) is fixedly connected to the upper side of the limiting block (307f), and the telescopic spring (307g) is sleeved on the outside of the contact rod (307c). The top end of the telescopic spring (307g) is fixedly connected to the inner top wall of the sleeve (307b).

6. The metal wire frame plasma cutting apparatus as described in claim 5, characterized in that: The upper surface of the friction block (307d) is provided with a groove (307d1), which is adapted to the bottom surface of the upper guide rail (202); when the contact rod (307c) is pushed upward, the friction block (307d) can abut against the bottom surface of the guide rail (202) through the groove (307d1), and the bottom surface of the guide rail (202) can abut against the side wall of the groove (307d1).

7. The metal wire frame plasma cutting apparatus as described in claim 6, characterized in that: Each of the two wedge blocks (205) has an inclined groove (205a) adapted to the roller (307e) on its opposite surface. The inclined groove (205a) extends gradually upward from the end of the wedge block (205) inward.

8. The metal wire frame plasma cutting apparatus as described in claim 7, characterized in that: When the roller (307e) moves into the inclined groove (205a), the roller (307e) gradually moves upward along the inclined direction of the inclined groove (205a), thereby lifting the contact rod (307c) and the friction block (307d) upward.

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