A fixed-point transmission mechanism for cutting a grinding wheel mesh

Abstract

The utility model relates to the field of grinding wheel mesh production equipment discloses a fixed point conveying mechanism of grinding wheel mesh cutting. The mechanism forms interval groove through rear side parallel support component of frame, and the front is equipped with work bench, sets up first air cylinder and first fixed column, sets up second air cylinder and second fixed column in movable frame, and the both alternately hold the mesh cloth, drive mechanism contains screw rod nut and rotary motor, and drive movable frame reciprocating movement along the support direction, and the both sides of work bench are equipped with sliding slot linkage slider and transverse limiting piece, and dynamically constrain cloth lateral shift, the original second fixed column top surface is lower than the support component top surface 2mm's anti - friction gap design. Its core benefit is: cutting precision reaches submillimeter level - double - station cooperative clamping and sending and dynamic anti - deviation mechanism make the positioning error less than or equal to 0.25mm;Completely eliminate mechanical wear - anti - friction gap realizes continuous operation 100km zero contact wear, and service life improves 5 times, solves the industry problem of traditional mechanism positioning out - of - tolerance, frequent maintenance.

Description

Technical Field

[0001] This utility model relates to the technical field of abrasive wheel mesh production equipment, and in particular to a fixed-point conveying mechanism for abrasive wheel mesh cutting. Background Technology

[0002] In the production of abrasive wheel mesh, precise cutting of the mesh fabric is a crucial step in ensuring product quality. Traditional cutting processes mainly suffer from the following technical shortcomings: Insufficient accuracy of manual feeding: Relying on operators to manually push the mesh to the cutting station results in poor consistency in the conveying distance, leading to cutting position deviations often exceeding ±3mm, which cannot meet the production requirements of high-precision abrasive wheel mesh (tolerance requirement ≤ ±0.5mm).

[0003] Manual operation is inefficient, with an average conveying speed of less than 0.8 m / min, and continuous operation is prone to fatigue errors.

[0004] Automatic conveyor mechanisms are prone to causing fabric misalignment. Existing automated conveying equipment uses single-point clamping feeding, resulting in a lack of lateral restraint on the mesh fabric during conveying. Uneven tension makes it prone to lateral slippage or wrinkling. Fabric offset during cutting generally exceeds 1mm, and the product qualification rate has consistently been below 85%.

[0005] Some equipment attempts to add fixed edge strips, but this hinders the normal transmission of the fabric, and forcibly dragging it will damage the mesh structure.

[0006] Mechanical wear and tear leads to a sharp reduction in equipment lifespan: The movable clamping mechanism comes into direct contact with the supporting structure, causing friction. Key components (such as the supporting steel plate and movable pressure column) develop deep wear marks after 6-12 months of continuous operation, forcing a shutdown for replacement. Frequent maintenance not only increases production costs but also results in lost production capacity.

[0007] Traditional anti-wear solutions, such as applying lubricating grease, easily contaminate the mesh fabric and have a short-lived effect.

[0008] Defects of collaborative control: The clamping, conveying, and cutting actions lack timing coordination, making the fabric prone to loosening and displacement during process changes. Existing technology cannot achieve closed-loop control of "clamping-positioning-cutting," requiring multiple position corrections, with a single cutting cycle lasting more than 30 seconds.

[0009] In summary, existing technologies struggle to simultaneously meet the three core requirements of high-precision positioning, zero-wear operation, and efficient production, thus hindering the upgrading of the grinding wheel and mesh industry towards automation and precision. This utility model aims to overcome these technical bottlenecks. Utility Model Content

[0010] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a fixed-point conveying mechanism for abrasive wheel mesh cutting.

[0011] To achieve the above objectives, this utility model provides a fixed-point conveying mechanism for abrasive mesh cutting, including a frame and a worktable located at its front. Its innovation lies in: a support assembly: several parallel support members are provided at the rear of the frame, their top surfaces being flush with the worktable, and gaps forming between adjacent support members; a fixed clamping assembly: a fixed frame is provided at the rear of the frame, with several first driving members at the top and a first fixed post at the bottom, the output end of each first driving member connected to a first pressure plate for pressing the mesh fabric between the first pressure plate and the first fixed post; and a movable clamping assembly: a movable frame is provided in front of the fixed frame, with several second driving members at the top. The bottom is equipped with a second fixed column, and the output end of the second drive component is connected to a second pressure plate. The second pressure plate can pass through the interval groove to press the mesh cloth against the second fixed column. The drive mechanism includes a lead screw nut on the movable frame and a lead screw connected to a rotary motor. The lead screw is parallel to the extension direction of the support component and is used to drive the movable frame to reciprocate along the extension direction of the support component. Anti-deviation component: The worktable is symmetrically provided with slide grooves on both sides. The slide grooves are equipped with sliding sliders. The sliders are connected to transverse limiting components. The ends of the transverse limiting components extend to the top of the worktable to press the edge of the mesh cloth, and the sliders can slide along the slide grooves with the mesh cloth. Anti-friction design: The top surface of the second fixed column is 2mm lower than the top surface of the support component.

[0012] Furthermore, the aforementioned support member is a steel plate, and the width of the interval groove is greater than the projected dimensions of the first pressure plate and the second pressure plate in the width direction of the interval groove.

[0013] Furthermore, both the first and second driving components are cylinders, and the central axis of the first pressure plate coincides with that of the first fixed column.

[0014] Furthermore, the aforementioned lead screw nut is fixed to the bottom frame of the movable frame, and the axis of the lead screw is parallel to the extension direction of the support member.

[0015] Furthermore, the height difference between the top surface of the second fixed column and the top surface of the supporting member is 2mm.

[0016] Furthermore, the aforementioned lateral limiting component is an L-shaped pressure plate, with its long side vertically fixed to the slider and its short side horizontally extending above the worktable to press the mesh cloth.

[0017] The beneficial effects of this utility model are: 1. Achieve sub-millimeter cutting positioning accuracy: Based on the synergistic effect of the dual-station clamping mechanism and dynamic anti-deviation components: the fixed frame and the movable frame alternately clamp, eliminating fabric rebound displacement, and the conveying positioning error is ≤0.25mm (measured standard deviation of 100 cuts); the L-shaped pressure plate slides synchronously with the fabric, continuously applying a 3-5N lateral constraint force, and the lateral deviation of the fabric during cutting is ≤0.3mm; compared with the traditional single-point clamping mechanism (positioning error ≥0.8mm), the accuracy is improved by more than 300%, completely solving the problem of scrapping of abrasive wheel mesh due to cutting deviation; 2. Completely eliminate mechanical wear of moving parts: Through the unique 2mm anti-friction gap design, the top surface of the second fixed column is permanently 2.0mm lower than the top surface of the support component, ensuring no physical contact during the entire movement of the mobile frame; after continuous operation for 100km, there are no wear marks on the surface of the support component (verified by 100x microscope). Breaking through the lifespan bottleneck caused by friction in traditional mechanisms, the service life of key components has been extended from 12 months to more than 5 years, and equipment maintenance costs have been reduced by 80%. Attached Figure Description

[0018] Figure 1 This is a side view of the present invention.

[0019] Figure 2 This is a top view of the support component of this utility model.

[0020] Figure 3 This is a side view of the connection between the lateral limiting component and the slider of this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Organizational composition and connection relationships: such as Figures 1 to 3 As shown: Basic frame construction: The frame 1 is a rectangular frame welded from channel steel (2000mm×800mm×1000mm); the workbench 2 is installed on the front table of the frame, and the surface is covered with wear-resistant steel plate (10mm thick). Support component implementation: Six SPCC cold-rolled steel plates are bolted to the rear side of the frame 1 as support components 3; steel plate dimensions: 1500mm long × 50mm wide × 5mm thick, with parallel spacing of 30mm to form a gap groove 31; the top surface of the steel plate is precisely leveled with the table surface of the workbench 2 (height difference ≤ 0.1mm). First pressure plate 43, second pressure plate 53 - spacer groove design: The projected dimensions of the first pressure plate 43 and the second pressure plate 53 in the width direction of the partition groove 31 are both 24.8mm, and the width of the partition groove is 30.0mm, ensuring that: the single-sided gap is ≥2.6mm (compensating for ±0.3mm assembly tolerance + ±0.1mm thermal deformation); the pressure plate does not contact the side wall of the steel plate when it is pressed down (the offset measured by the dial indicator is <0.05mm).

[0023] Implementation of the fixed clamping assembly: The fixed frame 4 is welded to the rear end of the frame, and six SMCCJ2B10-30 cylinders are installed on its top as the first driving component 41; the first fixed column 42 is a φ30mm chrome-plated round steel, which is vertically installed at the bottom of the fixed frame through a flange; the first pressure plate 43 is a stainless steel rectangular plate (100mm×60mm), which is connected to the cylinder output end through a thread, and its central axis coincides with the first fixed column 42; The mobile clamping assembly is implemented as follows: the movable frame 5 is installed 500mm in front of the fixed frame 4 via a linear guide rail; the second drive component 51 is a cylinder of the same model as the first cylinder, and its output end is connected to the second pressure plate 53; the second fixed column 52 is a φ30mm chrome-plated round steel, and the height difference between its top surface and the top surface of the support component 3 is 2.0mm (calibrated with a laser rangefinder). Drive mechanism implementation: The lead screw 63 is a GDK2005 ball screw (20mm diameter, 5mm lead), with its axis parallel to the support component 3; the rotary motor 62 is a Panasonic MHMF022L1U2M servo motor, fixed at the bottom of the fixed frame 4, and connected to the lead screw 63 through a coupling; the lead screw nut 61 is fixed to the center of the bottom frame of the movable frame 5 through a flange. Anti-offset component implementation: T-shaped grooves 71 (15mm deep, 10mm wide at the top) are milled on both sides of the worktable 2; the slider 72 is an aluminum alloy block (100mm×50mm×30mm), with a linear bearing embedded at the bottom to cooperate with the groove; the long side (150mm) of the L-shaped pressure plate 73 is vertically fixed to the slider by bolts, and the short side (50mm) extends horizontally to the top of the worktable.

[0024] Working principle and process: Step 1: Initial fabric positioning: Lay the mesh fabric flat on the surface of the support member 3, with the front end extending to the cutting position of the workbench 2; manually push the slider 72 so that the short side of the L-shaped pressure plate 73 presses down on the two sides of the mesh fabric (approximately 5N of pressure). Step 2: Fabric feeding via the movable frame: The first cylinder 41 lifts the first pressure plate 43 to a high position (releasing the fabric); the second cylinder 51 drives the second pressure plate 53 to vertically pass through the interval groove 31, pressing the mesh fabric tightly onto the second fixed column 52; the rotary motor 62 rotates forward to drive the lead screw 63, which in turn drives the movable frame 5 to move forward 200mm via the lead screw nut 61; at this time, the L-shaped pressure plate 73 slides synchronously with the fabric (slider movement speed = fabric conveying speed). Step 3: Fixed frame locking and cutting: The second cylinder 51 lifts the second pressure plate 53 to the high position (releasing the fabric); the first cylinder 41 drives the first pressure plate 43 to vertically pass through the interval groove 31, pressing the mesh fabric tightly onto the first fixed post 42; the cutting machine cuts the positioned mesh fabric (at this time, the movable frame 5 returns to the initial position); key design verification: when the movable frame moves, the second fixed post 52 and the support member 3 always maintain a 2mm gap, and the dial indicator detects no contact; during the conveying process, the L-shaped pressure plate 73 applies a constant lateral pressure (3-5N) to the fabric, and the laser displacement sensor detects a lateral offset ≤0.3mm.

[0025] Implementation variations: Modified support component: Alternative solution: Support component 3 is made of engineering plastic strip (MC901 material), and the width of the interval groove 31 is increased to 35mm; Effect: Reduces the weight of the mechanism by 30%, suitable for small cutting equipment; Drive component modification: Alternative solution: The first drive component 41 is replaced with an electric push rod (stroke 50mm, thrust 200N); Effect: Avoids the influence of air source fluctuations, and the positioning accuracy is improved to ±0.1mm; Anti-deviation component modification: Alternative: Add silicone pressure strip (hardness 50 Shore A) to the short side of the L-shaped pressure plate 73; Effect: Increases friction, suitable for high-tensile mesh fabric.

[0026] IV. Verification of Technical Effects: Anti-friction Design Verification: Continuous Operation Test: After a 50km journey, the surface of support component 3 showed no wear or scratches (100x microscope inspection); Compared with the traditional mechanism: The gapless design group showed wear marks ≥0.5mm deep after a 20km journey; Positioning Accuracy Verification: Cutting Size Inspection: After continuously cutting 100 mesh pieces, the size error was ≤0.25mm (industry standard ±1mm); Comparative Data: The traditional mechanism had an error ≥0.8mm under the same conditions; Stability Verification: Lateral Tensile Test: When an 80N lateral tensile force was applied, the maximum fabric offset was 0.35mm; The traditional mechanism had an offset of 1.2mm under a 40N tensile force.

[0027] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures relevant to the embodiments disclosed in this utility model. Other structures can refer to common designs. Where there is no conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above descriptions are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fixed-point conveying mechanism for cutting mesh with a grinding wheel, comprising a frame (1) and a worktable (2) disposed on its front side, characterized in that: Support components: The frame (1) is provided with several parallel support members (3) on the rear side, the top surface of which is flush with the workbench (2), and a gap groove (31) is formed between adjacent support members (3); Fixed clamping components: The frame (1) is provided with a fixed frame (4) on the rear side, the fixed frame (4) is provided with several first driving members (41) on the top, and a first fixed column (42) on the bottom, the output end of the first driving member (41) is connected to a first pressure plate (43) for pressing the mesh cloth between the first pressure plate (43) and the first fixed column (42); Moving clamping components: The fixed frame (4) is provided with a movable frame (5) in front, the movable frame (5) is provided with several second driving members (51) on the top, and a second fixed column (52) on the bottom, the output end of the second driving member (51) is connected to a second pressure plate (53), the second pressure plate (53) is connected to a second pressure plate (5 ... 53) The mesh cloth can be pressed against the second fixed post (52) through the interval groove (31); Drive mechanism: including a screw nut (61) provided on the movable frame (5) and a screw (63) connected to the rotary motor (62). The screw (63) is parallel to the extension direction of the support member (3) and is used to drive the movable frame (5) to move back and forth along the extension direction of the support member (3); Anti-deviation component: the worktable (2) is symmetrically provided with slide grooves (71) on both sides. The slide grooves (71) are provided with sliding sliders (72). The sliders (72) are connected to the transverse limiting member (73). The end of the transverse limiting member (73) extends to the top of the worktable (2) to press the edge of the mesh cloth. The sliders (72) can slide along the slide grooves (71) with the mesh cloth; Anti-friction design: the top surface of the second fixed post (52) is 2mm lower than the top surface of the support member (3).

2. The fixed-point conveying mechanism for abrasive wheel mesh cutting according to claim 1, characterized in that, The supporting member (3) is a steel plate, and the width of the interval groove (31) is greater than the projection dimensions of the first pressure plate (43) and the second pressure plate (53) in the groove width direction of the interval groove (31).

3. The fixed-point conveying mechanism for abrasive wheel mesh cutting according to claim 1, characterized in that, The first driving member (41) and the second driving member (51) are both cylinders, and the central axis of the first pressure plate (43) coincides with that of the first fixed column (42).

4. The fixed-point conveying mechanism for abrasive wheel mesh cutting according to claim 1, characterized in that, The lead screw nut (61) is fixed to the bottom frame of the movable frame (5), and the axis of the lead screw (63) is parallel to the extension direction of the support member (3).

5. The fixed-point conveying mechanism for abrasive wheel mesh cutting according to claim 1, characterized in that, The height difference between the top surface of the second fixed column (52) and the top surface of the supporting member (3) is 2mm.

6. The fixed-point conveying mechanism for abrasive wheel mesh cutting according to claim 1, characterized in that, The lateral limiting member (73) is an L-shaped pressure plate, with its long side vertically fixed to the slider (72) and its short side horizontally extending above the worktable (2) to press the mesh cloth.

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