A plate cutting device for wrench production

Abstract

The utility model discloses a plate cutting equipment for spanner production, including datum tool rest, install cutting base on the horizontal support surface of datum tool rest, two groups of vertical precision slide rails are symmetrically equipped in the both sides outer wall of datum tool rest, the inner chamber top wall of datum tool rest is installed with the atomization sprinkling plate of the oblique pointing shearing region, atomization sprinkling board is located above shearing blade, the side of datum tool rest is integrated with self -driven pumping component, is used for with the synchronous delivery of lubricating medium to atomization sprinkling board, the utility model discloses through self -driven pumping component, bearing slide, drive connecting rod and supercharged piston etc. component, bearing slide's shearing reciprocating displacement is directly converted into the pumping power of lubricating medium, realizes the integration design of lubricating system and shearing mechanism, need not the independent hydraulic lubricating pump station of external connection, effectively solve the defect that the whole machine volume is huge, system integration degree is low and energy consumption is higher in the original technology external connection independent hydraulic lubricating pump station leads to.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, specifically to a sheet metal cutting device for wrench production. Background Technology

[0002] As a widely used hardware tool, the sheet metal cutting process in the production of wrenches places extremely high demands on the dimensional accuracy and cut smoothness of the product. During the cutting process, the intense friction and compression between the shearing blade and the metal sheet generate a large amount of heat instantaneously. Therefore, an efficient lubrication and cooling system is essential to protect the blade and improve the cut quality. However, traditional wrench sheet metal cutting equipment has gradually revealed many technical defects in actual production. Existing cutting devices mostly use external independent hydraulic lubrication pump stations, which not only result in a large overall machine size and low system integration, but also require additional electricity or air supply during operation, leading to high energy consumption. If the traditional method of manually applying lubricating oil is used, uneven lubrication is very likely to occur, causing burrs or deformation on the wrench blank cut, seriously affecting the subsequent processing accuracy and yield. Therefore, this utility model proposes a sheet metal cutting device for wrench production to solve the above problems. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing external lubrication pump stations, such as large size, high energy consumption, and uneven manual lubrication application, this paper proposes a solution that integrates a self-driven pumping component with a load-bearing slide linkage mechanism and an atomizing spray structure. This achieves simultaneous lubrication and shearing processes, precise delivery of the lubricating medium, and avoids the problems of high-temperature air cushion layer affecting cooling effect and cut burr deformation.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sheet metal cutting device for wrench production, comprising a reference blade holder, a cutting base mounted on the horizontal support surface of the reference blade holder, two sets of vertical precision slide rails symmetrically arranged on the outer walls of both sides of the reference blade holder, and a bearing slide block slidably connected to the two sets of precision slide rails; a shearing blade is horizontally mounted on the outer wall of the bearing slide block, and the movement trajectory of the shearing blade matches the shearing edge of the cutting base; an atomizing spray plate inclined towards the shearing area is mounted on the top wall of the inner cavity of the reference blade holder, and the atomizing spray plate is located above the shearing blade; a self-driven pumping assembly is integrated on the side of the reference blade holder for synchronously delivering lubricating medium to the atomizing spray plate.

[0007] Preferably, the self-driven pumping assembly includes a pumping chamber fixed to the side wall of the reference tool holder. A pressure boosting piston is sealed and slidably installed inside the pumping chamber, dividing the interior of the pumping chamber into an oil suction chamber and an oil pressure chamber. An oil inlet branch pipe and an oil outlet branch pipe are respectively connected to the outer wall of the pumping chamber. Both the oil inlet branch pipe and the oil outlet branch pipe are equipped with check valves to control the unidirectional flow of the medium. The outer end of the oil inlet branch pipe is in fluid communication with an external oil storage source, and the output end of the oil outlet branch pipe is connected to the internal flow channel of the atomizing spray plate.

[0008] Preferably, a drive link is fixedly extended from one side edge of the bearing slide, one end of the drive link passes through the guide seal at the bottom of the pumping chamber and extends into it, and is rigidly connected to the bottom surface of the booster piston; by the reciprocating motion of the bearing slide in the vertical direction, the booster piston is forced to synchronously complete the absorption and high-pressure spraying of the lubricating medium.

[0009] Preferably, the inner top of the reference tool holder is rotatably connected to a threaded rod via a bearing seat, and the middle part of the bearing slide is provided with an internal threaded hole and is fitted onto the threaded rod; a limiting flange block is fixedly provided at the bottom end of the threaded rod, and the radial dimension of the limiting flange block is larger than the outer diameter of the thread of the threaded rod, so as to limit the lowest working position of the bearing slide.

[0010] Preferably, a servo motor is provided at the upper end of the reference tool holder, and the power output shaft of the servo motor is coaxially and fixedly connected to the top end of the threaded rod.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides a sheet metal cutting device for wrench production, which has the following beneficial effects:

[0013] 1. This utility model directly converts the shearing reciprocating motion of the bearing slide into the pumping power of the lubricating medium through components such as a self-driven pumping assembly, a bearing slide, a drive connecting rod, and a booster piston. This achieves an integrated design of the lubrication system and the shearing mechanism, eliminating the need for an external independent hydraulic lubrication pump station. This effectively solves the defects of the original technology, such as large overall size, low system integration, and high energy consumption caused by an external independent hydraulic lubrication pump station.

[0014] 2. This utility model constructs a synergistic structure of volumetric precision pumping and high-pressure atomizing spraying through components such as a pumping chamber, check valve, atomizing spray plate, and bearing slide. This ensures the directional flow of the lubricating medium and precise control of the oil discharge volume in a single shearing cycle. At the same time, the atomizing spray penetrates the high-temperature air cushion layer of the shearing process, effectively solving the defects of uneven lubrication caused by manual application of lubricating oil and poor cooling effect of atmospheric pressure spraying in the original technology. This improves the flatness of the wrench blank cut and the service life of the tool. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a sheet metal cutting device for wrench production proposed in this utility model;

[0016] Figure 2 for Figure 1 Structural diagram;

[0017] Figure 3 This is a schematic cross-sectional view of the pumping chamber in Figure 1.

[0018] In the diagram: 1. Reference tool holder; 2. Cutting base; 3. Shearing blade; 4. Bearing slide; 5. Threaded rod; 6. Servo motor; 7. Precision slide rail; 8. Pumping chamber; 9. Atomizing spray plate; 10. Drive linkage; 11. Pressure booster piston; 12. Oil inlet branch pipe; 13. Oil outlet branch pipe; 14. Limiting flange block. Detailed Implementation

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] This utility model provides a technical solution for sheet metal cutting equipment used in wrench production:

[0021] Please see Figure 1-3 A sheet metal cutting device for wrench production includes a reference blade holder 1. A cutting base 2 is mounted on the horizontal support surface of the reference blade holder 1. Two sets of vertical precision slide rails 7 are symmetrically arranged on the outer walls of both sides of the reference blade holder 1. A bearing slide 4 is slidably connected to the two sets of precision slide rails 7. A shearing blade 3 is horizontally mounted on the outer wall of the bearing slide 4. The movement trajectory of the shearing blade 3 matches the shearing edge of the cutting base 2. An atomizing spray plate 9 inclined towards the shearing area is installed on the top wall of the inner cavity of the reference blade holder 1. The atomizing spray plate 9 is located above the shearing blade 3. A self-driven pumping assembly is integrated on the side of the reference blade holder 1 to synchronously deliver the lubricating medium to the atomizing spray plate 9.

[0022] Furthermore, in this embodiment, a highly integrated lubrication and shearing structure is constructed by directly integrating the self-driven pumping component into the side of the reference tool holder 1 and cooperating with the inclined atomizing spray plate 9. The lubrication cycle is driven by the mechanical energy generated by the movement of the bearing slide 4, effectively solving the problem in the prior art where metal sheet shearing equipment typically requires an external independent hydraulic lubrication pump station, resulting in a large system size and high energy consumption. It also overcomes the defects of uneven lubrication caused by manual application of lubricating oil, which affects the flatness of the wrench blank cut.

[0023] The self-driven pumping assembly includes a pumping chamber 8 fixed to the side wall of the reference tool holder 1. A pressure boosting piston 11 is sealed and slidable inside the pumping chamber 8, which divides the interior of the pumping chamber 8 into an oil suction chamber and an oil pressure chamber. The outer wall of the pumping chamber 8 is connected to an oil inlet branch pipe 12 and an oil outlet branch pipe 13, respectively. Both the oil inlet branch pipe 12 and the oil outlet branch pipe 13 are equipped with check valves to control the unidirectional flow of the medium. The outer end of the oil inlet branch pipe 12 is in fluid communication with an external oil storage source, and the output end of the oil outlet branch pipe 13 is connected to the internal flow channel of the atomizing spray plate 9.

[0024] Furthermore, in this embodiment, the volumetric pumping structure formed by the pumping chamber 8 and the booster piston 11 can precisely control the oil discharge volume in a single shearing cycle. By installing check valves in the inlet branch pipe 12 and the outlet branch pipe 13, the directional flow of lubricating oil under pressure fluctuations is ensured. This design solves the technical problem in the prior art where insufficient cutting fluid pressure prevents penetration of the high-temperature air cushion layer generated during shearing, resulting in poor cooling of the shearing blade 3, when using gravity dripping or atmospheric pressure spraying schemes, thereby extending the tool's service life.

[0025] A drive link 10 is fixedly extended from one side edge of the bearing slide 4. One end of the drive link 10 passes through the guide seal at the bottom of the pumping chamber 8 and extends into its interior, and is rigidly connected to the bottom surface of the booster piston 11. By reciprocating vertically, the bearing slide 4 forces the booster piston 11 to simultaneously complete the absorption of lubricating medium and high-pressure spraying.

[0026] Furthermore, in this embodiment, the drive link 10 directly converts the shear displacement of the bearing slide 4 into the pumping stroke of the booster piston 11, thereby achieving physical-level rigid synchronization between the lubrication sequence and the shearing step.

[0027] The inner top of the reference tool holder 1 is rotatably connected to a threaded rod 5 via a bearing seat. The middle part of the bearing slide 4 is provided with an internal threaded hole and is fitted onto the threaded rod 5. A limiting flange block 14 is fixedly provided at the bottom end of the threaded rod 5. The radial dimension of the limiting flange block 14 is larger than the outer diameter of the thread of the threaded rod 5, which is used to limit the lowest working position of the bearing slide 4.

[0028] Furthermore, in this embodiment, the transmission design of the threaded rod 5 converts rotational motion into precise linear displacement, forming a double safety guarantee in conjunction with the limiting flange block 14 at the bottom. The limiting flange block 14, as a rigid limiting element, prevents the load-bearing slide 4 from overtraveling and impacting the cutting base 2 due to control failure.

[0029] The upper end of the reference tool post 1 is equipped with a servo motor 6, and the power output shaft of the servo motor 6 is coaxially and fixedly connected to the top end of the threaded rod 5.

[0030] In practical use, the working principle of this utility model is as follows:

[0031] When the equipment is started, the servo motor 6 starts working, and its power output shaft drives the threaded rod 5 to rotate synchronously. Since the bearing slide 4 is installed with the threaded rod 5 through the internal threaded hole in the middle, and the bearing slide 4 is slidably connected to the precision slide rails 7 on both sides of the reference tool holder 1, the rotational motion of the threaded rod 5 is converted into the vertical reciprocating motion of the bearing slide 4 along the precision slide rails 7.

[0032] When the equipment is in the initial standby state, the bearing slide 4 is in the initial upward position. At this time, the drive linkage 10 drives the booster piston 11 to be located in the upper area of ​​the pumping chamber 8. The oil pressure chamber of the pumping chamber 8 is in a depressurized state. The check valve in the oil inlet branch pipe 12 is kept open, and the check valve in the oil outlet branch pipe 13 is closed, preparing for the intake of the lubricating medium.

[0033] When sheet metal cutting is required, the servo motor 6 drives the threaded rod 5 to rotate in the forward direction, causing the bearing slide 4 to slide vertically downward along the precision slide rail 7. During this process, the drive connecting rod 10 on one side edge of the bearing slide 4 synchronously drives the booster piston 11 to slide downward along the sealed interior of the pumping chamber 8, which increases the volume of the oil suction chamber in the pumping chamber 8 and reduces the pressure. The lubricating medium in the external oil storage source enters the oil suction chamber through the oil inlet branch pipe 12 under the action of pressure difference, completing the lubricating medium suction action. At the same time, the shearing blade 3 on the outer wall of the bearing slide 4 moves downward synchronously with the bearing slide 4, gradually approaching the sheet metal for wrench production placed on the cutting base 2.

[0034] As the bearing slide 4 continues to descend, the movement trajectory of the shearing blade 3 precisely matches the shearing edge of the cutting base 2, performing shearing and cutting operations on the sheet metal. At this time, the limiting flange block 14 at the bottom of the threaded rod 5 plays a limiting role, preventing the bearing slide 4 from overtraveling and impacting the cutting base 2 due to control deviation, thus ensuring the safety and stability of the cutting process.

[0035] After the cutting operation is completed, the servo motor 6 drives the threaded rod 5 to rotate in the opposite direction, causing the bearing slide 4 to slide vertically upward along the precision slide rail 7. During this process, the drive connecting rod 10 synchronously drives the booster piston 11 to slide upward along the internal seal of the pumping chamber 8, which reduces the volume of the oil suction chamber and increases the pressure of the oil pressure chamber. The check valve in the oil inlet branch pipe 12 closes under pressure, and the check valve in the oil outlet branch pipe 13 opens, so that the lubricating medium in the oil pressure chamber is pushed to the oil outlet branch pipe 13 by high pressure.

[0036] High-pressure lubricating medium is delivered through the oil outlet branch pipe 13 to the internal flow channel of the atomizing spray plate 9 on the top wall of the inner cavity of the reference tool holder 1. The medium is then sprayed at an angle in an atomized form through the nozzles of the atomizing spray plate 9, precisely covering the contact area between the shearing blade 3 and the sheet metal, as well as the cutting area. This process achieves physical-level rigid synchronization between the lubrication sequence and the shearing step, ensuring that during the retraction process after the shearing blade 3 completes cutting, the lubricating medium can promptly lubricate and cool the high-temperature shearing blade 3 and the sheet metal cut, effectively breaking down the high-temperature air cushion layer generated during shearing and ensuring the lubrication and cooling effect.

[0037] In subsequent continuous cutting operations, the servo motor 6 continuously drives the threaded rod 5 to rotate alternately in both directions, causing the bearing slide 4 to slide back and forth along the precision slide rail 7. The drive connecting rod 10 continuously drives the booster piston 11 to slide back and forth synchronously in the pumping chamber 8, so that the oil inlet branch pipe 12 periodically completes the oil suction action and the oil outlet branch pipe 13 periodically completes the high-pressure oil delivery action. The atomizing spray plate 9 can always accurately and synchronously deliver the atomized lubricating medium to the shearing area.

[0038] Throughout the entire operation, the transmission design of the threaded rod 5 converts the rotational motion into precise linear displacement. Combined with the guiding effect of the precision slide rail 7, it ensures that the cutting trajectory of the shearing blade 3 driven by the bearing slide 4 is accurate and stable. The volumetric pumping structure formed by the pumping chamber 8 and the booster piston 11, combined with the check valves in the oil inlet branch pipe 12 and the oil outlet branch pipe 13, realizes the directional flow of the lubricating medium and the precise control of the oil discharge volume in a single shearing cycle, ensuring the uniformity and stability of lubrication.

[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A sheet metal cutting device for wrench production, comprising a reference tool holder (1), characterized in that: A cutting base (2) is installed on the horizontal support surface of the reference tool holder (1). Two sets of vertical precision slide rails (7) are symmetrically arranged on the outer walls of both sides of the reference tool holder (1). A bearing slide (4) is slidably connected on the two sets of precision slide rails (7). A shearing blade (3) is horizontally installed on the outer wall of the bearing slide (4). The movement trajectory of the shearing blade (3) matches the shearing edge of the cutting base (2). An atomizing spray plate (9) is installed on the top wall of the inner cavity of the reference tool holder (1) and is inclined towards the shearing area. The atomizing spray plate (9) is located above the shearing blade (3). A self-driven pumping assembly is integrated on the side of the reference tool holder (1) to synchronously deliver the lubricating medium to the atomizing spray plate (9).

2. The sheet metal cutting equipment for wrench production according to claim 1, characterized in that: The self-driven pumping assembly includes a pumping chamber (8) fixed to the side wall of the reference tool holder (1). A pressure booster piston (11) is sealed and slidable inside the pumping chamber (8). The pressure booster piston (11) divides the inside of the pumping chamber (8) into an oil suction chamber and an oil pressure chamber. The outer wall of the pumping chamber (8) is connected to an oil inlet branch pipe (12) and an oil outlet branch pipe (13). Both the oil inlet branch pipe (12) and the oil outlet branch pipe (13) are equipped with check valves to control the unidirectional flow of the medium. The outer end of the oil inlet branch pipe (12) is in fluid communication with an external oil storage source. The output end of the oil outlet branch pipe (13) is connected to the internal flow channel of the atomizing spray plate (9).

3. The sheet metal cutting equipment for wrench production according to claim 2, characterized in that: A drive link (10) is fixedly extended from one side edge of the bearing slide (4). One end of the drive link (10) passes through the guide seal at the bottom of the pumping chamber (8) and extends into it, and is rigidly connected to the bottom surface of the booster piston (11). By the reciprocating motion of the bearing slide (4) in the vertical direction, the booster piston (11) is forced to synchronously complete the absorption of the lubricating medium and high-pressure spraying.

4. A sheet metal cutting device for wrench production according to claim 3, characterized in that: The inner top of the reference tool holder (1) is rotatably connected to a threaded rod (5) via a bearing seat. The middle part of the bearing slide (4) is provided with an internal threaded hole and is fitted onto the threaded rod (5). The bottom end of the threaded rod (5) is fixedly provided with a limiting flange block (14). The radial dimension of the limiting flange block (14) is greater than the outer diameter of the thread of the threaded rod (5) to limit the lowest working position of the bearing slide (4).

5. A sheet metal cutting device for wrench production according to claim 4, characterized in that: The upper end of the reference tool holder (1) is equipped with a servo motor (6), and the power output shaft of the servo motor (6) is coaxially and fixedly connected to the top end of the threaded rod (5).

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