Hardware stamping equipment with anti-deviation structure

Abstract

The utility model discloses hardware stamping equipment with an anti-deviation structure, which comprises a rack, a stamping driving mechanism arranged at the upper part of the rack and a workbench arranged at the lower part of the rack, and a transverse anti-deviation mechanism and a longitudinal anti-deviation mechanism are integrated on the surface of the workbench. Through the synergistic effect of the transverse anti-deviation mechanism and the longitudinal anti-deviation mechanism, the hydraulic clamping assembly and the lifting limiting assembly effectively limit movement of a workpiece, and the punching precision is guaranteed; a T-shaped guide rail and a graphite lubricating strip of the movable clamping plate are designed to be matched with a double-acting hydraulic cylinder, so that the clamping action is stable and flexible; the buffering layer and the metal net framework of the composite pressing piece not only ensure the clamping effect, but also avoid damage to the surface of the workpiece. A laser positioning line emitter and a pressure sensing module of the auxiliary positioning system realize accurate positioning and abnormal alarm; a damping device composed of a belleville spring set, a viscous fluid damper and a rubber vibration isolation pad at the bottom of the workbench greatly reduces stamping vibration, improves the stability of equipment, prolongs the service life of the equipment, and meets the high-precision production requirement.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, specifically to a hardware stamping equipment with an anti-deviation structure. Background Technology

[0002] In the field of metal stamping, the precision and stability of stamping equipment play a decisive role in product quality. Currently, in traditional metal stamping equipment, workpieces are prone to lateral or longitudinal shifts on the worktable surface during processing, leading to inaccurate stamping positions. This not only reduces product yield but also increases production costs and time. Existing anti-shift structures are often functionally limited, offering poor lateral anti-shifting performance and lacking effective guidance during longitudinal feeding, making it difficult to meet the production demands of high-precision metal parts. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a hardware stamping equipment with an anti-offset structure, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A hardware stamping equipment with an anti-deviation structure includes a frame, a stamping drive mechanism mounted on the upper part of the frame, and a worktable at the lower part. The worktable surface is integrated with a transverse anti-deviation mechanism and a longitudinal anti-deviation mechanism.

[0006] The lateral anti-deviation mechanism includes hydraulic clamping components symmetrically arranged on both sides of the workbench along its length. Each hydraulic clamping component consists of a base and a movable clamping plate that can slide laterally along the base. The inner side of the movable clamping plate is provided with a composite clamping element.

[0007] The longitudinal anti-deviation mechanism includes a liftable limiting component installed at the feed end of the worktable. The liftable limiting component consists of a lifting platform and an L-shaped limiting block connected to the lifting platform. The inner side of the L-shaped limiting block is provided with a roller array. The roller array includes three sets of independently rotatable guide wheels. The axis of each guide wheel forms an adjustable angle of 15-45° with the feed direction.

[0008] As a further description of the above technical solution, the bottom of the movable clamping plate is provided with a T-shaped guide rail, and a corresponding T-shaped sliding groove is provided on the base, with a graphite lubricating strip installed between the mating surfaces of the two.

[0009] As a further description of the above technical solution, a double-acting hydraulic cylinder is provided between the movable clamping plate and the base, and the piston rod end of the double-acting hydraulic cylinder is connected to the movable clamping plate through a universal joint.

[0010] As a further description of the above technical solution, the composite clamping component includes a buffer layer with a thickness of 5-8mm and a metal mesh skeleton embedded in the buffer layer.

[0011] As a further description of the above technical solution, the surface of the buffer layer is provided with staggered V-shaped anti-slip grooves, the groove depth of the V-shaped anti-slip grooves is 0.5-1.2mm, and the groove spacing is 2-4mm; the metal mesh skeleton is woven from 304 stainless steel wire, and the mesh diameter is 1-3mm.

[0012] As a further description of the above technical solution, the L-shaped limiting block is provided with an angle adjustment mechanism connecting each guide wheel. The angle adjustment mechanism includes a mounting base and a swing arm fixed on the L-shaped limiting block. The mounting base is provided with an arc-shaped adjustment groove, and the swing arm is connected to the arc-shaped adjustment groove by bolts.

[0013] As a further description of the above technical solution, the worktable surface is also provided with an auxiliary positioning system, the auxiliary positioning system comprising:

[0014] The laser positioning line emitter is set along the width of the worktable, and its emission angle is adjustable within ±10°.

[0015] Pressure sensing modules are located at the four corners of the workbench. Each module contains four pressure sensors arranged in a matrix.

[0016] An alarm indicator light, electrically connected to the pressure sensor, triggers an alarm when the pressure difference at the four corners exceeds a set threshold.

[0017] As a further description of the above technical solution, the bottom of the workbench is integrated with a shock-absorbing device, which includes:

[0018] Disc spring assembly between the upper and lower steel plates;

[0019] Viscous fluid dampers arranged around the spring assembly;

[0020] Rubber vibration isolation pads are installed on the bottom surface of the lower steel plate.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] The present invention provides a hardware stamping equipment with an anti-offset structure, which has at least one of the following beneficial effects during use:

[0023] The integrated lateral and longitudinal anti-deviation mechanism on the worktable, through the composite clamping component of the hydraulic clamping assembly and the adjustable guide wheels of the liftable limit assembly, precisely limits the lateral and longitudinal movement of the workpiece during the stamping process, significantly improving processing accuracy and reducing scrap rate. The T-shaped guide rails, graphite lubricating strips, and double-acting hydraulic cylinder design between the movable clamping plate and the base make clamping actions more flexible and stable, extending the equipment's service life. The buffer layer and metal mesh skeleton of the composite clamping component firmly clamp the workpiece while preventing surface damage. The laser positioning line emitter and pressure sensing module of the auxiliary positioning system enable rapid and accurate positioning and timely alarms when workpiece placement is abnormal. The shock absorption device at the bottom of the worktable, through the synergistic action of disc spring groups, viscous fluid dampers, and rubber vibration isolation pads, effectively absorbs stamping vibrations, reduces equipment wear, ensures processing stability, and meets the production requirements of high-precision hardware parts. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a hardware stamping equipment with an anti-offset structure according to the present invention;

[0025] Figure 2 This is a schematic diagram of the first side structure of a hardware stamping equipment with an anti-offset structure according to the present invention;

[0026] Figure 3 This is a schematic diagram of the second side structure of a hardware stamping equipment with an anti-offset structure according to the present invention;

[0027] Figure 4 This is a partial perspective structural diagram of a hardware stamping equipment with an anti-offset structure according to the present invention.

[0028] Numbering on the map:

[0029] 1. Frame; 101. Workbench; 102. Stamping drive mechanism; 103. Laser positioning line transmitter; 104. Upper steel plate; 105. Lower steel plate; 106. Disc spring assembly; 2. Lateral anti-deviation mechanism; 201. Base; 202. Double-acting hydraulic cylinder; 203. Hydraulic clamping assembly; 204. Movable clamping plate; 205. T-shaped guide rail; 3. Longitudinal anti-deviation mechanism; 301. L-shaped limit block; 302. Lifting platform; 303. Liftable limit assembly; 304. Guide wheel; 305. Arc-shaped adjustment groove. Detailed Implementation

[0030] 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.

[0031] like Figure 1-4 As shown, this utility model provides a hardware stamping equipment with an anti-offset structure, including a frame 1, a stamping drive mechanism 102 installed on the upper part of the frame 1 and a worktable 101 at the lower part. The worktable 101 has a transverse anti-offset mechanism 2 and a longitudinal anti-offset mechanism 3 integrated on its surface.

[0032] The lateral anti-deviation mechanism 2 includes hydraulic clamping components 203 symmetrically arranged on both sides of the workbench 101 along its length. Each hydraulic clamping component 203 consists of a base 201 and a movable clamping plate 204 that can slide laterally along the base 201. The inner side of the movable clamping plate 204 is provided with a composite pressing element.

[0033] In this embodiment, when the workpiece enters the worktable 101, the double-acting hydraulic cylinders 202 of the hydraulic clamping assemblies 203 on both sides operate synchronously, pushing the movable clamping plate 204 to slide laterally along the base 201, automatically adjusting the clamping distance according to the workpiece width. The polyurethane buffer layer of the composite clamping component generates elastic deformation when in contact with the workpiece surface, and the metal mesh skeleton provides rigid support, forming a "rigid-flexible composite" clamping force. The T-shaped guide rail 205 cooperates with the slide groove to ensure the straightness of movement, and the graphite lubricating strip reduces the sliding friction coefficient to below 0.08.

[0034] The longitudinal anti-deviation mechanism 3 includes a liftable limiting component 303 installed at the feeding end of the workbench 101. The liftable limiting component 303 consists of a lifting platform 302 and an L-shaped limiting block 301 connected to the lifting platform 302. The inner side of the L-shaped limiting block 301 is provided with a roller array. The roller array includes three sets of independently rotatable guide wheels 304. The axis of each guide wheel 304 forms an adjustable angle of 15-45° with the feeding direction.

[0035] In this embodiment, the vertical screw jack 302 adjusts the height of the L-shaped limit block 301 according to the workpiece thickness, with an adjustment range of 5-50mm. Three sets of guide wheels 304 form a progressive guide angle of 15°-45° through an angle adjustment mechanism. When the material enters, a component force F = μN·cosθ (μ is the coefficient of friction, N is the normal force) is generated. The spiral guide pattern of the nitrile rubber layer generates a tangential velocity of 0.2-0.5m / s during the feeding process, reducing sliding friction by more than 40%.

[0036] By forming a spatial rectangular coordinate system constraint through lateral clamping and longitudinal limiting, the workpiece offset is controlled within ±0.05mm. The laser positioning line emitter 103 projects a visible light spot to assist the operator in quick positioning. The pressure sensing module monitors the pressure distribution at the four corners in real time, and triggers an alarm and stops the machine when the pressure difference is >5N.

[0037] Furthermore, the bottom of the movable clamping plate 204 is provided with a T-shaped guide rail 205, and the base 201 is provided with a corresponding T-shaped sliding groove, and a graphite lubricating strip is installed between the mating surfaces of the two.

[0038] The T-shaped guide rail 205 at the bottom of the movable clamping plate 204 and the T-shaped slide groove of the base 201 form a three-dimensional constraint pair, which restricts the movable clamping plate 204 to slide only in the horizontal X-axis direction, thus eliminating Y / Z axis offset.

[0039] The graphite lubricating strip is embedded in the contact surface of the slide groove. By utilizing the self-lubricating properties of graphite, the coefficient of sliding friction is reduced from 0.15 in steel-steel contact to 0.06-0.08, which reduces the moving resistance of the clamping assembly by more than 45%.

[0040] Furthermore, a double-acting hydraulic cylinder 202 is provided between the movable clamping plate 204 and the base 201, and the piston rod end of the double-acting hydraulic cylinder 202 is connected to the movable clamping plate 204 through a universal joint.

[0041] The double-acting hydraulic cylinder 202 achieves precise bidirectional force application through alternating oil supply via ports A and B. Forward stroke: High-pressure oil pushes the piston rod out, generating an 8kN clamping force. Reverse stroke: The reverse oil circuit drives the piston rod to retract, with a speed up to 15mm / s. The hydraulic system has a built-in relief valve that automatically releases pressure when the clamping force exceeds a set threshold (e.g., 10kN) to prevent workpiece deformation due to overpressure.

[0042] The piston rod end is connected to the movable clamping plate 204 via a universal joint, allowing for ±3° angular deviation compensation. This eliminates jamming caused by guide rail installation errors or uneven workpiece thickness. The universal joint's cross shaft structure converts axial thrust into pure linear motion, avoiding wear of the hydraulic cylinder seals by lateral forces.

[0043] Furthermore, the composite clamping component includes a buffer layer with a thickness of 5-8 mm and a metal mesh skeleton embedded within the buffer layer. When compressed, the buffer layer exhibits 35%-65% elastic deformation, absorbing over 80% of the impact energy. Its V-shaped anti-slip grooves form multi-directional friction units, generating a micro-interlocking effect upon contact, increasing the friction coefficient μ from 0.3 (planar contact) to 0.85. The ratio of the metal mesh skeleton's mesh diameter to the buffer layer thickness is 1:5 to 1:8, forming a three-dimensional stress diffusion network that reduces local pressure from 15 MPa to 4 MPa. The woven structure provides differential stiffness in the X / Y directions (120 N / mm in the X direction and 95 N / mm in the Y direction), adapting to different feeding directions.

[0044] Furthermore, the surface of the buffer layer is provided with staggered V-shaped anti-slip grooves. The groove depth is 0.5-1.2mm, and the groove spacing is 2-4mm. The metal mesh skeleton is woven from 304 stainless steel wire with a mesh diameter of 1-3mm. The groove depth of 0.5-1.2mm allows for a workpiece surface embedment of 0.05-0.12mm, preventing scratches while ensuring anti-slip properties. The staggered spacing of 2-4mm creates a dual-density anti-slip zone (3mm spacing in the center and 2mm spacing at the edges). Under a clamping force of 10kN, the anti-slip grooves generate 3.2m / s. 2 The tangential resistance acceleration is increased by 4 times compared to planar structures, improving displacement resistance. The polyurethane buffer layer (Shore hardness 75A) and 304 stainless steel (tensile strength 520MPa) form a rigid-flexible gradient.

[0045] Furthermore, the L-shaped limiting block 301 is provided with an angle adjustment mechanism connecting each guide wheel 304. The angle adjustment mechanism includes a mounting base and a swing arm fixed on the L-shaped limiting block 301. The mounting base is provided with an arc-shaped adjustment groove 305, and the swing arm is connected to the arc-shaped adjustment groove 305 by bolts.

[0046] Stepless angle adjustment: The swing arm slides along the 62° arc-shaped adjustment groove 305 of the mounting base, achieving continuous angle adjustment of the guide wheel 304±30°. A three-point positioning mechanism is employed; when the bolt passes through the arc-shaped groove, it is achieved through:

[0047] The tapered washer generates an axial preload of 12kN;

[0048] The V-shaped positioning surface of the swing arm and the hardened guide rail surface of the mounting base form a self-centering effect;

[0049] Copper-based lubricating coatings reduce the coefficient of sliding friction to 0.08.

[0050] The bolt adopts a double thread section design (Upper section M12×1.75 coarse thread + Lower section M12×1 fine thread), and the locking torque attenuation rate is reduced from 35% of the conventional structure to 8% under vibration conditions. The asymmetric reinforcing rib of the swing arm makes the X-direction stiffness (850N / mm) higher than that in the Y-direction (650N / mm), compensating for the lateral component force of the guide wheel 304.

[0051] The adjustment groove has laser-etched graduation lines (0.5° increments) on its edge, which, together with the swing arm indicator, enables rapid angle alignment (calibration time < 20 seconds). The mounting base has a reserved M6 locating pin hole to support rapid tooling reset (repeatability ±0.03°).

[0052] Furthermore, the surface of the workbench 101 is also equipped with an auxiliary positioning system, which includes:

[0053] The laser positioning line emitter 103, which is arranged along the width of the worktable 101, has an adjustable emission angle range of ±10°.

[0054] Pressure sensing modules are located at the four corners of the workbench 101. Each module contains four pressure sensors arranged in a matrix.

[0055] An alarm indicator light, electrically connected to the pressure sensor, triggers an alarm when the pressure difference at the four corners exceeds a set threshold.

[0056] The laser positioning line emitter 103 uses a 532nm green laser (6 times more visible than red light) in conjunction with a 30° line generator and servo motor drive to achieve ±10° continuous deflection (0.05° angular resolution), covering the full width of the worktable 101, and features intelligent light intensity adjustment (200-5000 cd / m²). 2 It can adapt to different ambient light levels (0-1000 lux).

[0057] Each module of the four pressure sensors arranged in a matrix integrates four thin-film piezoresistive sensors (range 0-50kg, accuracy ±0.3%FS), a 16-point pressure topology analysis algorithm, capable of identifying local pressure anomalies with a diameter >20mm, and a temperature compensation circuit (-20℃~85℃) maintaining measurement stability of ±0.5%. Pressure data from the four corners is transmitted to the control unit via a CAN bus at a frequency of 500Hz.

[0058] Furthermore, the bottom of the workbench 101 is integrated with a shock-absorbing device, which includes:

[0059] Disc spring assembly 106 between upper steel plate 104 and lower steel plate 105;

[0060] Viscous fluid dampers arranged around the spring assembly;

[0061] Rubber vibration isolation pads are installed on the bottom surface of the lower steel plate 105.

[0062] The disc spring assembly 106 uses 12 sets of 60Si2MnA disc springs (outer diameter Φ80mm) arranged in parallel, with a load capacity of 8kN per set and a total stiffness of 180N / mm (preload stroke 5mm). It exhibits nonlinear stiffness characteristics: stiffness increases from 0-30% compression, entering a constant force region after 30%. The viscous fluid damper is filled with dimethyl silicone oil (viscosity 5000cSt, temperature stability ±3% / 10℃), and the rubber vibration isolation pads are a composite structure of nitrile rubber / NBR + steel wire layer, resulting in excellent overall vibration damping and strong stability.

[0063] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A metal stamping equipment with an anti-deviation structure, comprising a frame, a stamping drive mechanism mounted on the upper part of the frame, and a lower worktable, characterized in that: The worktable surface is integrated with a lateral anti-deviation mechanism and a longitudinal anti-deviation mechanism; The lateral anti-deviation mechanism includes hydraulic clamping components symmetrically arranged on both sides of the workbench along its length. Each hydraulic clamping component consists of a base and a movable clamping plate that can slide laterally along the base. The inner side of the movable clamping plate is provided with a composite clamping element. The longitudinal anti-deviation mechanism includes a liftable limiting component installed at the feed end of the worktable. The liftable limiting component consists of a lifting platform and an L-shaped limiting block connected to the lifting platform. The inner side of the L-shaped limiting block is provided with a roller array. The roller array includes three sets of independently rotatable guide wheels. The axis of each guide wheel forms an adjustable angle of 15-45° with the feed direction.

2. The hardware stamping equipment with an anti-deviation structure according to claim 1, characterized in that: The bottom of the movable clamping plate is provided with a T-shaped guide rail, and a corresponding T-shaped sliding groove is provided on the base. A graphite lubricating strip is installed between the mating surfaces of the two.

3. A hardware stamping equipment with an anti-offset structure according to claim 1 or 2, characterized in that: A double-acting hydraulic cylinder is connected between the movable clamping plate and the base, and the piston rod end of the double-acting hydraulic cylinder is connected to the movable clamping plate through a universal joint.

4. The hardware stamping equipment with an anti-offset structure according to claim 1, characterized in that: The composite clamping component includes a buffer layer with a thickness of 5-8 mm and a metal mesh skeleton embedded in the buffer layer.

5. A hardware stamping equipment with an anti-offset structure according to claim 4, characterized in that: The surface of the buffer layer is provided with staggered V-shaped anti-slip grooves, the groove depth of which is 0.5-1.2mm and the groove spacing is 2-4mm; the metal mesh skeleton is woven from 304 stainless steel wire with a mesh diameter of 1-3mm.

6. A hardware stamping equipment with an anti-offset structure according to claim 1, characterized in that: The L-shaped limiting block is provided with an angle adjustment mechanism connecting each guide wheel. The angle adjustment mechanism includes a mounting base and a swing arm fixed on the L-shaped limiting block. The mounting base is provided with an arc-shaped adjustment groove, and the swing arm is connected to the arc-shaped adjustment groove by bolts.

7. A hardware stamping equipment with an anti-offset structure according to claim 1, characterized in that: The workbench surface is also equipped with an auxiliary positioning system, which includes: The laser positioning line emitter is set along the width of the worktable, and its emission angle is adjustable within ±10°. Pressure sensing modules are located at the four corners of the workbench. Each module contains four pressure sensors arranged in a matrix. An alarm indicator light, electrically connected to the pressure sensor, triggers an alarm when the pressure difference at the four corners exceeds a set threshold.

8. A hardware stamping equipment with an anti-offset structure according to claim 1, characterized in that: The bottom of the workbench is integrated with a shock absorption device, which includes: Disc spring assembly between the upper and lower steel plates; Viscous fluid dampers arranged around the spring assembly; Rubber vibration isolation pads are installed on the bottom surface of the lower steel plate.

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