Wire cut electrical discharge machining tool with automatic feeding and discharging functions

Abstract

The invention discloses an automatic feeding and discharging wire cut electrical discharge machining machine tool, and relates to the technical field of wire cut electrical discharge machining, the automatic feeding and discharging wire cut electrical discharge machining machine tool comprises a base, a top seat is arranged above the rear side of the base, a limiting frame is arranged on one side of a feeding vertical frame, and a mounting plate is arranged on the top surface of a transmission belt; a pushing protruding block is arranged on the top face of the mounting plate, and a discharging plate is arranged on the lower portion of the other side of the supporting frame. By adopting an intermittent pushing mechanism that the transmission belt is matched with the pushing bumps, automatic indexing feeding of workpieces is realized, the heights of the pushing bumps are equal to the heights of the workpieces, only one workpiece is pushed each time, and the distance between the pushing bumps is greater than the width of the worktable, so that interference with the processed workpieces is effectively avoided, and the working efficiency is improved. Under the cooperation of the cam divider and the servo motor, the transmission belt achieves intermittent movement, the pushing action of the material pushing protruding block is accurately controlled, and therefore continuous and stable feeding of workpieces is achieved, and the machining efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric spark wire cutting, and in particular to an electric spark wire cutting machine tool with automatic loading and unloading. Background Art

[0002] Wire EDM, also known as Wire EDM, is a high-precision device that uses the principle of electro-erosion to cut conductive materials. The working principle of Wire EDM is to use a continuously moving thin metal wire (usually molybdenum wire or copper wire) as an electrode to erode the metal through pulsed spark discharge, thereby achieving the cutting and forming of the workpiece.

[0003] Existing wire-cut EDM machines require manual loading and unloading. However, EDM involves risks such as discharge and high temperatures, which can cause the temperature of the processing area to rise sharply. Manual loading and unloading usually requires close contact with the processing area, which can lead to work-related injuries (such as pinching and electric shock).

[0004] For example, the improved wire EDM disclosed in publication number CN103567579A does not have the function of automatic loading and unloading. However, during the discharge process, the wire EDM will generate high-energy electric sparks and the high-temperature environment still poses a serious threat to the personal safety of the operator. Manual loading and unloading not only poses a safety risk, but also affects the processing efficiency. Due to the limited speed and accuracy of manual operation, the loading and unloading process takes a certain amount of time, which increases the idle time of the machine tool and reduces the overall production efficiency.

[0005] Therefore, it is necessary to invent an electric spark wire cutting machine tool with automatic loading and unloading to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide an electric spark wire cutting machine tool with automatic loading and unloading, so as to solve the problem that the technology does not have the function of automatic loading and unloading.

[0007] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electric spark wire cutting machine tool with automatic loading and unloading, comprising a base, a top seat is provided above the rear side of the base, an outer cover is provided on the front side of the top seat, a frame is provided on one side of the base, a support frame is provided on the inner walls of the front and rear sides of the frame, a driving pulley is provided on one side of the frame, a driven pulley is provided on the other side of the frame, a transmission belt is tensioned on the driving pulley and the driven pulley, a feed frame is provided above one side of the support frame, a limit frame is provided on one side of the feed frame, mounting plates are provided on the left and right sides of the top surface of the transmission belt, a pushing protrusion is provided on the top surface of the mounting plate, and a blanking plate is provided at the bottom of the other side of the support frame.

[0008] Furthermore, a wire storage drum is provided inside the outer cover and is located on the front wall of the top seat. A plurality of guide wheels are provided around the wire storage drum. An electrode wire is wound around the wire storage drum. One end of the wire storage drum passes through a plurality of guide wheels and then winds around the wire feeding frame. The wire storage drum cooperates with the guide wheels to realize orderly arrangement of the electrode wire. The wire feeding frame ensures directional movement of the electrode wire, thereby improving processing stability.

[0009] Furthermore, the electrode wire extends from the wire feeding frame and is wound on a wire taking-up drum. A workbench is provided on the front side of the wire taking-up drum and is mounted on a base. The continuous supply and precise positioning of the electrode wire are achieved through the wire taking-up drum.

[0010] Furthermore, a pulse power supply is provided on the front side of the workbench, the positive pole of the pulse power supply is connected to the electrode wire, and the negative pole of the pulse power supply is connected to the workbench. The positive pole is connected to the electrode wire and the negative pole is connected to the workbench to form a closed discharge circuit.

[0011] Furthermore, there are two driving pulleys, two driven pulleys and two transmission belts, and auxiliary pulleys are provided at the suspended bottom ends of the two transmission belts and are located on the frame. The auxiliary pulleys are in contact with the bottom surface of the transmission belt, and the auxiliary pulleys support the suspended section of the belt to reduce the risk of vibration and slippage.

[0012] Furthermore, the two transmission belts are arranged at both ends of the electrode wire in a front-to-back distribution with a specific spacing, so that the two transmission belts are accurately distributed on both sides of the electrode wire and aligned with the workpiece pushing path.

[0013] Furthermore, a cam divider is provided on the front side of the transmission belt and is installed on the base. The top end of the cam divider is connected to a servo motor through a flange. The output end of the cam divider is connected to the driving pulley through a coupling. The continuous rotation of the servo motor is converted into intermittent motion through the cam divider.

[0014] Furthermore, the feed frame and the limit frame are connected by a fixed frame, and there are two feed frames and limit frames. The two feed frames and limit frames are symmetrically arranged on opposite sides of the workpiece, and the extended ends at the bottom of the feed frame and the limit frame are in contact with the bottom surface of the workpiece. A workpiece guide channel is formed by the double feed frames and the limit frame to ensure that the workpiece enters the processing area horizontally, and the bottom extension end limits the sagging of the workpiece to ensure positioning accuracy.

[0015] Furthermore, a No. 1 slide groove is provided on the side wall of the feed frame, and a No. 2 slide groove is provided on the inner wall of the support frame. The No. 1 slide groove and the No. 2 slide groove are connected to form a sliding track for the workpiece. The No. 1 slide groove and the No. 2 slide groove match the two ends of the workpiece in a sliding manner. The slide groove matches the end of the workpiece to reduce friction resistance and realize sliding transportation.

[0016] Furthermore, the mounting plate and the pusher bumps are provided in two groups, each group of the pusher bumps is provided with two, the height of the two pusher bumps is equal to the height of a workpiece, and the spacing between the two pusher bumps is greater than the width of the workbench, ensuring that one piece is pushed each time, and the spacing is greater than the width of the workbench, avoiding interference with the processed workpiece and realizing continuous loading and unloading.

[0017] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. This invention achieves automatic indexing and feeding of workpieces by using a transmission belt in conjunction with an intermittent pushing mechanism of pusher bumps. The height of the pusher bumps is equal to the height of the workpiece, ensuring that only one workpiece is pushed at a time. The spacing between the pusher bumps is greater than the width of the worktable, effectively avoiding interference with the processed workpiece. With the cooperation of the cam divider and the servo motor, the transmission belt achieves intermittent motion, precisely controlling the pushing action of the pusher bumps, thereby achieving continuous and stable loading of workpieces and greatly improving processing efficiency. 2. The present invention realizes reliable automatic unloading and workpiece guiding functions through the coordinated design of the feed frame, the limit frame and the slide (No. 1 slide and No. 2 slide). The two feed frames and the limit frame are symmetrically arranged on both sides of the workpiece, and the bottom extension end contacts the bottom surface of the workpiece to form a stable guide channel, ensuring that the workpiece enters the processing area horizontally and accurately. At the same time, the No. 1 slide on the side wall of the feed frame is connected with the No. 2 slide on the inner wall of the support frame, together forming a sliding track for the workpiece, which matches the two ends of the workpiece in a sliding manner, effectively reducing friction resistance, so that the workpiece can slide smoothly to the lower plate after processing is completed, realizing automatic unloading. This design not only improves the positioning accuracy of the workpiece, but also ensures the stability and reliability of the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the wire storage drum and the guide wheel of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the support frame of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the driving pulley, the driven pulley and the auxiliary pulley of the present invention; Figure 5This is a front structural diagram of the driving pulley, the driven pulley and the auxiliary pulley of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the feed frame and the limiting frame of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the mounting plate and the pusher protrusion of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the blanking plate of the present invention.

[0020] Description of reference numerals: 1. Base; 2. Top seat; 3. Outer cover; 4. Wire storage drum; 5. Guide wheel; 6. Electrode wire; 7. Wire feeding frame; 8. Wire take-up drum; 9. Workbench; 10. Pulse power supply; 11. Frame; 12. Support frame; 13. Driving pulley; 14. Driven pulley; 15. Auxiliary pulley; 16. Cam divider; 17. Servo motor; 18. Drive belt; 19. Feed frame; 20. Limit frame; 21. Fixed frame; 22. No. 1 chute; 23. No. 2 chute; 24. Mounting plate; 25. Pushing bump; 26. Unloading plate. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] The present invention provides Figure 1-8 The electric spark wire cutting machine tool with automatic loading and unloading shown in the figure includes a base 1, a top seat 2 is arranged above the rear side of the base 1, an outer cover 3 is arranged on the front side of the top seat 2, a frame 11 is arranged on one side of the base 1, and a support frame 12 is arranged on the inner walls of the front and rear sides of the frame 11, a driving pulley 13 is arranged on one side of the frame 11, and a driven pulley 14 is arranged on the other side of the frame 11, and a transmission belt 18 is tensioned on the driving pulley 13 and the driven pulley 14, a feed frame 19 is arranged above one side of the support frame 12, and a limit frame 20 is arranged on one side of the feed frame 19, mounting plates 24 are arranged on the left and right sides of the top surface of the transmission belt 18, and a pusher protrusion 25 is arranged on the top surface of the mounting plate 24, and a blanking plate 26 is arranged at the bottom of the other side of the support frame 12.

[0027] In terms of the pushing mechanism of this embodiment, continuous and stable loading and unloading of workpieces is achieved through the arrangement of two sets of mounting plates 24 and pushing protrusions 25. The height and spacing design of the pushing protrusions 25 ensure that only one workpiece is pushed at a time and avoids interference with the processed workpiece, thereby achieving continuous and stable loading and unloading operations. This design not only improves the efficiency of loading and unloading, but also reduces the difficulty of operation and labor intensity, providing strong support for the automated production of wire-cut EDM machines.

[0028] A wire storage drum 4 is provided inside the outer cover 3 and is located on the front wall of the top seat 2. A plurality of guide wheels 5 are provided around the wire storage drum 4. An electrode wire 6 is wound on the wire storage drum 4. One end of the wire storage drum 4 passes through a plurality of guide wheels 5 and then winds around the wire feeding frame 7. The electrode wire 6 extends from the wire feeding frame 7 and is wound on the wire receiving drum 8. A workbench 9 is provided on the front side of the wire receiving drum 8 and is installed on the base 1. A pulse power supply 10 is provided on the front side of the workbench 9. The positive pole of the pulse power supply 10 is connected to the electrode wire 6, and the negative pole of the pulse power supply 10 is connected to the workbench 9.

[0029] The coordinated design of the wire storage drum 4 and the guide wheel 5 in this embodiment ensures that the electrode wire 6 can be arranged in an orderly and stable manner, reducing the entanglement and confusion of the electrode wire 6, and the design of the wire reel 8 realizes the automatic retraction and release of the electrode wire 6, and the positive pole of the pulse power supply 10 is connected to the electrode wire 6, and the negative pole is connected to the workbench 9, forming a closed discharge circuit. This connection method enables high-frequency pulse discharge to be generated between the electrode wire 6 and the workbench 9, thereby realizing cutting processing of the workpiece.

[0030] There are two driving pulleys 13, driven pulleys 14 and transmission belts 18. Auxiliary pulleys 15 are provided at the suspended bottom ends of the two transmission belts 18 and are located on the frame 11. The auxiliary pulleys 15 are in contact with the bottom surfaces of the transmission belts 18. The two transmission belts 18 are arranged at both ends of the electrode wire 6 in a front-to-back distribution at a specific interval. A cam divider 16 is provided on the front side of the transmission belt 18 and is installed on the base 1. The top end of the cam divider 16 is connected to the servo motor 17 through a flange, and the output end of the cam divider 16 is connected to the driving pulley 13 through a coupling.

[0031] In terms of the transmission system in this embodiment, the auxiliary pulley 15 is provided to provide effective support for the suspended section of the transmission belt 18, reducing the risk of vibration and slippage. The cooperation between the cam divider 16 and the servo motor 17 realizes the intermittent motion control of the transmission belt 18, so that the continuous rotation of the servo motor 17 can be converted into intermittent motion of the transmission belt 18 through the cam divider 16, thereby accurately controlling the pushing timing of the workpiece.

[0032] The feed frame 19 is connected to the limit frame 20 by a fixed frame 21. There are two feed frames 19 and the limit frames 20. The two feed frames 19 and the limit frames 20 are respectively arranged on opposite sides of the workpiece in a symmetrical manner. The extended ends of the bottom of the feed frame 19 and the limit frames 20 are in contact with the bottom surface of the workpiece. The side wall of the feed frame 19 is provided with a No. 1 slide groove 22, and the inner wall of the support frame 12 is provided with a No. 2 slide groove 23. The No. 1 slide groove 22 and the No. 2 slide groove 23 are connected to form a sliding track for the workpiece. The No. 1 slide groove 22 and the No. 2 slide groove 23 match the two ends of the workpiece in a sliding manner. There are two groups of mounting plates 24 and pusher protrusions 25, each group of pusher protrusions 25 is provided with 2, the height of the two pusher protrusions 25 is equal to the height of a workpiece, and the distance between the two pusher protrusions 25 is greater than the width of the workbench 9.

[0033] In this embodiment, in terms of the workpiece guiding and positioning system, the extended end of the bottom of the feed frame 19 and the limit frame 20 is in contact with the bottom surface of the workpiece, forming a stable guiding channel, ensuring that the workpiece can enter the processing area horizontally and accurately, and the No. 1 slide 22 is connected to the No. 2 slide 23, which together constitute the sliding track of the workpiece, providing stable guiding and positioning support. The workpiece moves smoothly on the sliding track, reducing friction resistance and positioning errors, and ensuring the stability and accuracy of the processing process.

[0034] Working principle of the present invention: Refer to the instruction manual Figure 1-8 When using the present invention, first, the workpieces to be processed are neatly stacked in the guide channel formed by the feed frame 19 and the limit frame 20, and the two ends of the workpieces are respectively embedded in the No. 1 slide 22. The bottom surface of the lowest workpiece contacts the feed frame 19 and the bottom extension end of the limit frame 20 to form a stable support. Then, the servo motor 17 is started, and the continuous rotation of the servo motor 17 is converted into the intermittent motion of the transmission belt 18 through the cam divider 16. The pusher protrusion 25 on the mounting plate 24 on the top surface of the transmission belt 18 is driven by the transmission belt 18 according to the set The workpiece moves forward in an intermittent motion pattern, and the pusher protrusion 25 pushes the bottom workpiece during the conveying process, so only one workpiece is pushed each time. The workpiece slides along the slide track of the No. 1 slide 22 and the No. 2 slide 23 to the processing position of the workbench 9. Before entering the processing position, the pulse power supply 10 is started to generate high-frequency pulse discharge, so that the workpiece material between the electrode wire 6 and the workbench 9 is cut under the action of the discharge. After the cutting is completed, the pusher protrusion 25 continues to push the workpiece to slide away from the workbench 9, and the slid workpiece is automatically unloaded through the unloading plate 26 on the other side of the support frame 12.

[0035] By repeating the above steps, the wire EDM machine tool can realize automatic loading and unloading of workpieces as well as efficient and precise cutting.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic loading and unloading electric spark wire cutting machine tool, comprising a base (1), characterized in that: A top seat (2) is provided above the rear side of the base (1), an outer cover (3) is provided on the front side of the top seat (2), a frame (11) is provided on one side of the base (1), a support frame (12) is provided on the inner walls of the front and rear sides of the frame (11), a driving pulley (13) is provided on one side of the frame (11), a driven pulley (14) is provided on the other side of the frame (11), a transmission belt (18) is tensioned on the driving pulley (13) and the driven pulley (14), a feed frame (19) is provided above one side of the support frame (12), a limit frame (20) is provided on one side of the feed frame (19), mounting plates (24) are provided on the left and right sides of the top surface of the transmission belt (18), a pusher protrusion (25) is provided on the top surface of the mounting plate (24), and a blanking plate (26) is provided below the other side of the support frame (12).

2. The automatic loading and unloading wire-cut electric discharge machine according to claim 1, characterized in that: A wire storage drum (4) is provided inside the outer cover (3) and is located on the front wall of the top seat (2). A plurality of guide wheels (5) are provided around the wire storage drum (4). An electrode wire (6) is wound around the wire storage drum (4). One end of the wire storage drum (4) passes through the plurality of guide wheels (5) and is then wound around the wire feeding frame (7).

3. The automatic loading and unloading wire-cut electric discharge machine according to claim 2, characterized in that: The electrode wire (6) extends from the wire feeding frame (7) and is wound on a wire taking-up drum (8). A workbench (9) is provided on the front side of the wire taking-up drum (8) and is mounted on the base (1).

4. The automatic loading and unloading wire-cut electric discharge machine according to claim 3, characterized in that: A pulse power supply (10) is provided on the front side of the workbench (9), the positive pole of the pulse power supply (10) is connected to the electrode wire (6), and the negative pole of the pulse power supply (10) is connected to the workbench (9).

5. The automatic loading and unloading wire-cut electric discharge machine according to claim 1, characterized in that: Two of the driving pulleys (13), the driven pulleys (14) and the transmission belts (18) are provided, and auxiliary pulleys (15) are provided at the suspended bottom ends of the two transmission belts (18) and are located on the frame (11), and the auxiliary pulleys (15) are in contact with the bottom surfaces of the transmission belts (18).

6. The automatic loading and unloading wire-cut electric discharge machine according to claim 5, characterized in that: The two transmission belts (18) are arranged at both ends of the electrode wire (6) in a front-to-back distribution at a specific interval.

7. The automatic loading and unloading wire-cut electric discharge machine according to claim 6, characterized in that: A cam divider (16) is provided on the front side of the transmission belt (18) and is mounted on the base (1). The top end of the cam divider (16) is connected to a servo motor (17) via a flange, and the output end of the cam divider (16) is connected to a driving pulley (13) via a coupling.

8. The automatic loading and unloading wire-cut electric discharge machine according to claim 1, characterized in that: The feed frame (19) and the limiting frame (20) are connected via a fixing frame (21). Two feed frames (19) and two limiting frames (20) are provided. The two feed frames (19) and the limiting frames (20) are symmetrically arranged on opposite sides of the workpiece. The extended ends of the bottoms of the feed frames (19) and the limiting frames (20) are in contact with the bottom surface of the workpiece.

9. The automatic loading and unloading wire-cut electric discharge machine according to claim 8, characterized in that: The side wall of the feed frame (19) is provided with a No. 1 slide groove (22), and the inner wall of the support frame (12) is provided with a No. 2 slide groove (23). The No. 1 slide groove (22) and the No. 2 slide groove (23) are connected to each other to form a sliding track of the workpiece. The No. 1 slide groove (22) and the No. 2 slide groove (23) match the two ends of the workpiece in a sliding manner.

10. The automatic loading and unloading wire-cut electric discharge machine according to claim 1, characterized in that: The mounting plate (24) and the pusher protrusions (25) are provided in two groups, each group of the pusher protrusions (25) is provided with two, the height of the two pusher protrusions (25) is equal to the height of a workpiece, and the distance between the two pusher protrusions (25) is greater than the width of the workbench (9).

Images