Hydraulic scissors with servo gap adjusting function
By introducing servo drive components and wedge strip mechanisms into the hydraulic scissors, precise adjustment of the gap is achieved, solving the problems of low accuracy and low efficiency of traditional hydraulic scissors, and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202510476809.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-06-06
AI Technical Summary
The gap adjustment of traditional hydraulic scissors has problems such as low accuracy, low efficiency, poor adaptability and cumbersome operation, making it difficult to achieve high-precision, adaptive and intelligent integrated clearance adjustment.
Hydraulic scissors with servo adjustment clearance are used to drive the movable wedge bars to translate through the servo drive components, and the fixed wedge bars and elastic top-reach mechanism is used to realize the precise adjustment of the lower scissors against the upper scissors.
Improve the accuracy and efficiency of gap adjustment, realize dynamic compensation for different materials and thicknesses, reduce frequent manual operations, and facilitate recording and calling of adjustment parameters.
Smart Images
Figure CN120095218A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of plate shearing devices, in particular to a hydraulic scissors with servo gap adjustment. Background Art
[0002] In sheet metal processing, hydraulic scissors are the core equipment of the automated blanking line, and the accuracy of the blade gap directly affects the shearing quality. The adjustment of the gap of traditional hydraulic scissors usually adopts mechanical manual operation or mechanical limit devices, which has low adjustment accuracy and manual adjustment relies on experience, which easily leads to the mismatch between the gap and the thickness of the sheet, causing burrs, uneven cross-section and other problems; low efficiency, manual adjustment during production change requires shutdown, which takes up to 30 minutes, affecting production continuity; poor adaptability, when facing different materials or thickness changes, it is impossible to dynamically compensate for the gap deviation caused by thermal deformation or tool wear in real time; lack of data feedback, no data feedback during the adjustment process, unable to record historical parameters to optimize the process; cumbersome operation, difficult to integrate into the automation system of smart factories. Therefore, with the development of servo control technology, there is an urgent need for a high-precision, adaptive and intelligently integrated hydraulic scissor gap adjustment solution that can improve production efficiency and product quality, and reduce the difficulty of later manual maintenance. Summary of the invention
[0003] The present invention aims at the problem of manual operation of gap adjustment of hydraulic scissors in the prior art and provides a hydraulic scissors with servo gap adjustment to improve the gap adjustment accuracy and adjustment efficiency to adapt to the thickness of materials and realize dynamic compensation adjustment.
[0004] The objective of the present invention is achieved in this way. A hydraulic scissors with servo-adjustable clearance comprises a horizontal beam and a lower base arranged horizontally above and below, and vertical support plates symmetrically disposed on both sides of the lower base and the beam are fixedly connected respectively, and longitudinal guide rails are arranged on the inner sides of the vertical support plates respectively, and a sliding knife seat is connected between the two longitudinal guide rails, and an upper scissors is connected to the lower side of the sliding knife seat, and an oil cylinder is arranged on the upper side of the beam, and the piston rod of the oil cylinder extends through and extends to the lower side of the beam and the end portion is connected to the sliding knife seat for driving the longitudinal shearing movement of the upper scissors, and an adjusting knife seat is arranged on the lower base, and an adjusting knife seat is arranged on the adjusting knife seat It is equipped with a lower scissors, characterized in that the upper surface of the lower base is provided with a guide plane for installing an adjusting knife seat, and the adjusting knife seat is respectively fixed to the guide plane on both sides along the length direction by limiting pressure plates and adjusting pressure plates, and a gap adjustment mechanism is provided between the bottom of the adjusting pressure plate and the adjusting knife seat, and the gap adjustment mechanism includes a fixed wedge bar and a movable wedge bar that cooperate and abut between the adjusting pressure plate and the adjusting knife seat, the fixed wedge bar is fixed to the side wall of the adjusting knife seat, and one end of the movable wedge bar is connected to a servo drive component, and an elastic supporting mechanism is provided on the side of the adjusting knife seat on the same side as the limiting pressure plate.
[0005] The hydraulic scissors with servo gap adjustment of the present invention have a lower scissors installed on an adjustment knife seat, and the gap between the lower scissors and the upper scissors is adjusted by a gap adjustment mechanism. In the gap adjustment mechanism, the movable wedge bar is driven by a servo mechanism to translate along the length direction, and the movable wedge bar and the fixed wedge bar cooperate to translate and drive the adjustment knife seat to translate synchronously, so as to adjust the gap between the lower scissors and the upper scissors. Compared with manual adjustment and measurement, the gap between the upper and lower scissors is adjusted by the servo drive component, which has high adjustment accuracy and fast adjustment speed, reduces the frequent operation process of adjusting and measuring at the same time, and the adjustment parameters are easy to record for subsequent direct call.
[0006] In order to facilitate the sliding adjustment of the lower scissors driven by the adjusting knife seat, the adjusting knife seat includes a horizontal adjustment seat and a knife holder installed on the guide plane of the lower base, and the knife holder is arranged at the center of the width direction of the horizontal adjustment seat. The horizontal adjustment seat can slide along the width direction of the guide plane under the push of the gap adjustment mechanism to adjust the gap between the lower scissors and the upper scissors. The adjustment pressure plate and the limit pressure plate are pressed against the upper surface of the horizontal adjustment seat, and the horizontal adjustment seat is respectively provided with limit steps.
[0007] To facilitate the connection between the servo drive component and the movable wedge bar, the servo drive component includes an adjustment seat fixed to the end of the movable wedge bar, an inner thread sleeve is fixed on the adjustment seat, a fixed seat is provided at the axial position of the inner thread sleeve of the horizontal adjustment seat corresponding to the inner thread sleeve of the adjustment seat, a shaft sleeve is provided at a position coaxial with the inner thread sleeve on the fixed seat, the adjusting screw is screwed to the inner thread sleeve and the axial screw connection position is locked by a locking nut, one end of the adjusting screw passes through the shaft sleeve and the end is connected to a servo motor through a coupling, and the servo motor is fixed on a vertical support plate.
[0008] In order to facilitate the elastic abutment mechanism to limit the horizontal adjustment seat to the position where the scissors gap is the smallest, the elastic abutment mechanism includes at least two groups of push rods arranged on the side edge of the horizontal adjustment seat along the length direction, the push rods are fixed to the horizontal adjustment seat through push rod seats, the push rod seats are provided with threaded sleeves that match the push rod threads, the matching parts of the push rods are provided with external threads, and the outer periphery of the push rod between the push rod seats and the horizontal adjustment seat is also provided with a mold spring. Through the elastic abutment of the mold spring and the horizontal adjustment seat, when the gap adjustment mechanism adjusts the horizontal adjustment seat to move in the direction of the large gap, the mold spring always maintains the elastic abutment against the horizontal adjustment seat to maintain the position of the lower scissors.
[0009] In order to facilitate the adjustment of the extreme limit position of the push rod, an adjusting double nut is provided on the outer side of the push rod away from the horizontal adjustment seat.
[0010] The two ends of the guide plane of the lower base along the length direction are respectively provided with guide steps for facilitating the guiding and sliding of the two ends of the horizontal adjustment seat.
[0011] In order to accurately control the trajectory of the upper scissors' up and down movement, sliding bars are respectively provided at the two ends of the sliding knife seat that cooperate with the longitudinal guide rail; the sliding knife seat is connected to a synchronous shaft through a bearing seat rotation support along the length direction, and the shaft ends of the synchronous shaft are respectively fixed with follower gears, and racks are respectively fixed on the vertical support plate in the longitudinal direction corresponding to the follower gears.
[0012] In order to facilitate the compaction of materials during shearing, a pressure plate is provided along the length direction of the sliding knife seat on the other side of the synchronous shaft, and a plurality of guide rod seats are provided on the side wall of the sliding knife seat above the pressure plate. A guide rod and a compression spring are connected between the guide rod seat and the pressure plate. One end of the guide rod is connected to the pressure plate, and a guide rod hole is provided at the other end of the guide rod corresponding to the position of the guide rod seat, and the compression spring is connected between the guide rod seat and the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front view of the hydraulic scissors with servo clearance adjustment according to the present invention.
[0014] Figure 2 A partial view of the gap adjustment mechanism.
[0015] Figure 3 for Figure 1 Left view of .
[0016] Figure 4 This is a three-dimensional view of hydraulic scissors with servo clearance adjustment.
[0017] Figure 5 This is a three-dimensional view of the hydraulic scissors with servo clearance adjustment from another direction.
[0018] In the figure, 1 is a cylinder; 2 is a crossbeam; 3 is a vertical support plate; 4 is a sliding tool holder; 401 is a slide bar; 5 is an upper scissors; 6 is a lower scissors; 7 is an adjustable tool holder; 701 is a horizontal adjustment seat; 702 is a tool holder; 703 is a guide step; a driving component; 801 is a servo motor; 802 is a coupling; 803 is a fixed seat; 804 is an adjusting screw; 805 is a locking nut; 806 is an adjusting seat; 807 is an inner thread sleeve; 9 is a limiting pressure plate; 10 is a lower base; 1001 is a guide plane; 11 is a fixed wedge bar; 12 is a movable wedge bar; 13 is an adjusting pressure plate; 14 is a push rod; 1401 is a push rod; 1042 is a push rod seat; 1403 is a mold elasticity; 17 is a synchronous shaft; 18 is a follower gear; 19 is a rack; 20 is a guide rod; 21 is a guide rod seat; 22 is a compression spring; 23 is a press plate; 24 is a longitudinal guide rail. DETAILED DESCRIPTION
[0019] The hydraulic scissors with servo clearance adjustment of the present invention will be described in detail below with reference to the accompanying drawings.
[0020] like Figure 1-Figure 5As shown, the present invention includes a horizontally arranged crossbeam 2 and a lower base 10, the lower base 10 and the two sides of the crossbeam 2 are respectively fixedly connected with vertical support plates 3 that are symmetrical on both sides, the inner sides of the vertical support plates 3 are respectively provided with longitudinal guide rails 16, a sliding knife seat 4 is connected between the two longitudinal guide rails 24, and an upper scissors 5 is connected to the side of the sliding knife seat 4, an oil cylinder 1 is provided on the upper side of the crossbeam 2, the piston rod of the oil cylinder 1 extends through the lower side of the crossbeam 2 and the end is connected to the sliding knife seat 4 for driving the upper scissors 5 to move longitudinally, an adjusting knife seat 7 is provided on the lower base 10, and a lower scissors 6 is installed on the adjusting knife seat 7, and the lower base 10 is provided with a plurality of adjusting knife seats 7. A guide plane 1001 for installing the adjusting knife seat 7 is provided on the upper surface. The adjusting knife seat 7 is pressed onto the guide plane 1001 on both sides along the length direction by a limiting pressure plate 9 and an adjusting pressure plate 13 respectively. A gap adjustment mechanism is provided between the adjusting pressure plate 13 and the adjusting knife seat 7. The gap adjustment mechanism includes a fixed wedge strip 11 and a movable wedge strip 12 that cooperate and abut between the adjusting pressure plate 13 and the adjusting knife seat 7. The fixed wedge strip 11 is fixed to the side wall of the adjusting knife seat 7. One end of the movable wedge strip 12 is connected to the servo drive component 8. An elastic supporting mechanism is provided on the side of the adjusting knife seat 7 on the same side as the limiting pressure plate 9.
[0021] like Figure 3 and Figure 4 As shown, in order to facilitate the sliding adjustment of the lower scissors 6 driven by the adjusting knife seat 7, the adjusting knife seat 7 of the present invention includes a horizontal adjustment seat 701 and a knife holder 702 installed on the guide plane of the lower base 10, and the knife holder 702 is vertically arranged at the center of the width direction of the horizontal adjustment seat. The horizontal adjustment seat 7 can slide along the width direction of the guide plane under the push of the gap adjustment mechanism to adjust the gap between the lower scissors 6 and the upper scissors 5. The adjusting pressure plate 13 and the limiting pressure plate 9 are pressed against the upper surface of the horizontal adjustment seat 701, and the horizontal adjustment seat 701 is respectively provided with limiting steps 703 to facilitate the translation of the limiting horizontal adjustment seat between the limiting steps 703 from both ends.
[0022] like Figure 3 and Figure 5 As shown, in order to facilitate the connection between the servo drive component and the movable wedge bar 12, the servo drive component 8 includes an adjustment seat 806 fixed to the end of the movable wedge bar 12, an inner screw sleeve 807 is fixed on the adjustment seat 806, a fixed seat 803 is provided at the axial position of the horizontal adjustment seat 701 corresponding to the inner screw sleeve 807, a shaft sleeve is provided at a position coaxially corresponding to the inner screw sleeve 807 on the fixed seat 803, an adjusting screw 804 is screwed to the inner screw sleeve 807 and the axial screwed position is locked by a locking nut 805, one end of the adjusting screw 804 passes through the shaft sleeve and the end is connected to a servo motor 801 through a coupling 802, and the servo motor 801 is fixed on the vertical support plate 3.
[0023] In order to facilitate the elastic abutment mechanism to limit the horizontal adjustment seat 7 to the position where the gap between the scissors is the smallest, the elastic abutment mechanism includes at least two groups of push rods 1401 arranged on the side edge of the horizontal adjustment seat 701 along the length direction, the push rod 1401 is fixed to the horizontal adjustment seat 701 through a push rod seat 1402, a threaded sleeve is provided on the push rod seat 703 to match the thread of the push rod 1401, and an external thread is provided at the matching part of the push rod 1401. A mold spring 1403 is also provided on the outer periphery of the push rod between the push rod seat 1402 and the horizontal adjustment seat 701. Through the elastic abutment of the mold spring 1403 and the horizontal adjustment seat 701, when the gap adjustment mechanism adjusts the horizontal adjustment seat 701 to move in the direction of the large gap, the mold spring 701 always maintains the elastic abutment against the horizontal adjustment seat 701 to maintain the position of the lower scissors; in order to lock and adjust the relative screw connection position of the push rod 1402 and the push rod seat, an adjustment double nut 1404 is provided on the outer side of the push rod 1403 away from the horizontal adjustment seat.
[0024] In order to precisely control the trajectory of the upper scissors 5 moving up and down, the two ends of the sliding knife seat 4 are respectively provided with slide bars 401 at the positions matching the longitudinal guide rail 24; the sliding knife seat 4 is connected to the synchronous shaft 17 through the bearing seat rotation support along the length direction, and the shaft ends of the synchronous shaft 17 are respectively fixed with follower gears 18, and the vertical support plate 3 is respectively fixed with racks 19 in the longitudinal direction corresponding to the follower gears 18. When the sliding knife seat 4 slides up and down under the drive of the oil cylinder, the two follower gears 18 respectively mesh with the racks 19 to ensure the accuracy of the up and down movement of the sliding knife seat 4 and ensure the smooth shearing movement of the upper scissors 5.
[0025] like Figure 5 As shown, in order to facilitate the compaction of materials during shearing, a pressure plate 23 is provided along the length direction of the sliding knife seat 5 on the other side opposite to the synchronous shaft 17, and a plurality of guide rod seats 21 are provided on the side wall of the sliding knife seat 4 above the pressure plate 23. A guide rod 20 and a compression spring 22 are connected between the guide rod seat 21 and the pressure plate 23. One end of the guide rod 20 is connected to the pressure plate 22, and the other end of the guide rod 20 is provided with a guide rod hole corresponding to the position of the guide rod seat 21, and the compression spring 22 is connected between the guide rod seat 4 and the pressure plate 23.
[0026] The hydraulic scissors with servo-adjustable gap of the present invention have a lower scissors 6 installed on an adjusting knife seat, and the gap between the lower scissors 6 and the upper scissors 5 is adjusted by a gap adjusting mechanism. In the gap adjusting mechanism, a movable wedge bar 12 is driven to translate along the length direction by a servo mechanism, and the coordinated translation of the movable wedge bar 12 and the fixed wedge bar 11 drives the adjusting knife seat 7 to translate synchronously, thereby realizing the adjustment of the gap between the lower scissors 6 and the upper scissors 5.
[0027] According to the thickness of the sheared sheet, the gap between the upper and lower scissors is adjusted through the servo encoder of the servo motor, and the initial data such as the rotation degree or number of revolutions of the output end of the servo motor corresponding to the sheet of different thickness is recorded. Generally, when the gap is zero, the output number of revolutions corresponding to the output end of the servo motor is 0. Figure 3 Taking the corresponding left and right directions in the figure as an example, at this time, the fixed wedge bar 11 and the movable wedge bar 12 are located at the rightmost position, the end of the push rod 1401 of the elastic supporting mechanism 14 is against the horizontal adjustment seat 701, and the mold spring is compressed between the push rod seat 1402 and the side wall of the horizontal adjustment seat 701; when adjusting the gap, the servo motor drives the movable wedge bar 12 to translate, so that the horizontal adjustment seat 701 translates to the left to an appropriate gap position, and at the same time, the mold spring 1403 is synchronously extended to press against the horizontal adjustment seat 701. After initially adjusting to a suitable position, a shear test is carried out to verify whether the gap is appropriate by the quality of the shear edge. If the initially adjusted gap is too large or too small, the servo drive output shaft is reversed or forward corrected and the shearing is corrected until the appropriate gap position is reached, completing the gap debugging process of the plate thickness shearing, and recording the output data (relative number of revolutions and rotation degrees) corresponding to the plate thickness through the servo encoder; and then the output data of the servo motor corresponding to different plate thicknesses are debugged according to the above method for direct call at the production site. When there are different deviations in the thickness of different batches of plates, the output data of the servo motor corresponding to the plate thickness can also be re-debugged and determined through the above process.
[0028] The above-mentioned method of adjusting the gap of the upper and lower scissors by driving the gap adjustment mechanism with a servo motor can realize servo adjustment, record storage and direct call during use, and can be debugged on-site according to the actual plate thickness deviation. Compared with manual adjustment and measurement, it has high adjustment accuracy and fast adjustment speed, reduces the frequent operation process of adjusting and measuring at the same time, and the adjustment parameters are easy to record for subsequent direct call.
Claims
1. A hydraulic scissors with servo adjustment gap, comprising a horizontal beam and a lower base arranged up and down, the lower base and the two sides of the beam are respectively fixedly connected with vertical support plates symmetrical to each other, the inner sides of the vertical support plates are respectively provided with longitudinal guide rails, a sliding knife seat is connected between the two longitudinal guide rails, an upper scissors is connected to the lower side of the sliding knife seat, an oil cylinder is provided on the upper side of the beam, a piston rod of the oil cylinder extends through the lower side of the beam and the end is connected to the sliding knife seat for driving the upper scissors to move longitudinally, an adjusting knife seat is provided on the lower base, and a lower scissors is installed on the adjusting knife seat, characterized in that The upper surface of the lower base is provided with a guide plane for installing an adjusting knife seat, and the adjusting knife seat is fixed to the guide plane on both sides along the length direction by limiting pressure plates and adjusting pressure plates respectively, and a gap adjustment mechanism is provided between the lower side of the adjusting pressure plate and the adjusting knife seat, and the gap adjustment mechanism includes a fixed wedge bar and a movable wedge bar that cooperate and abut between the adjusting pressure plate and the adjusting knife seat, the fixed wedge bar is fixed to the side wall of the adjusting knife seat, and one end of the movable wedge bar is connected to a servo drive component, and an elastic supporting mechanism is provided on the side of the adjusting knife seat on the same side as the limiting pressure plate.
2. The hydraulic scissors with servo-adjustable clearance according to claim 1, characterized in that: The adjustable knife seat includes a horizontal adjustment seat and a knife holder installed on the guide plane of the lower base, the knife holder is arranged at the center of the horizontal adjustment seat in the width direction, and the horizontal adjustment seat can slide along the width direction of the guide plane under the push of the gap adjustment mechanism to adjust the gap between the lower scissors and the upper scissors, the adjustment pressure plate and the limit pressure plate are pressed against the upper surface of the horizontal adjustment seat, and the horizontal adjustment seat is respectively provided with limit steps.
3. The hydraulic scissors with servo-adjustable clearance according to claim 2, characterized in that: The servo drive component includes an adjustment seat fixed to the end of a movable wedge-shaped bar, an inner threaded sleeve is fixed on the adjustment seat, a fixed seat is provided at the axial position of the inner threaded sleeve of the horizontal adjustment seat corresponding to the adjustment seat, a shaft sleeve is provided at a position coaxial with the inner threaded sleeve on the fixed seat, the adjusting screw is screwed to the inner threaded sleeve and the axial screwed position is locked by a locking nut, one end of the adjusting screw passes through the shaft sleeve and the end is connected to a servo motor by a coupling, and the servo motor is fixed to a vertical support plate.
4. The hydraulic scissors with servo-adjustable clearance according to claim 2, characterized in that: The elastic supporting mechanism includes at least two groups of push rods arranged on the side edge of the horizontal adjustment seat along the length direction. The push rods are fixed to the horizontal adjustment seat through push rod seats. The push rod seats are provided with threaded sleeves that cooperate with the push rod threads. A mold spring is also provided on the outer periphery of the push rod between the push rod seat and the horizontal adjustment seat.
5. The hydraulic scissors with servo-adjustable clearance according to claim 2, characterized in that: The outer side of the push rod away from the horizontal adjustment seat is provided with an adjustment double nut.
6. The hydraulic scissors with servo-adjustable clearance according to claim 2, characterized in that: The two ends of the guide plane of the lower base along the length direction are respectively provided with guide steps for facilitating the guiding and sliding of the two ends of the horizontal adjustment seat.
7. The hydraulic scissors with servo-adjustable clearance according to claim 2, characterized in that: The two ends of the sliding knife seat are respectively provided with sliding strips cooperating with the guide rails at the parts cooperating with the longitudinal guide rails; the sliding knife seat is connected to a synchronous shaft through a bearing seat for rotation support along the length direction, and the shaft ends of the synchronous shaft are respectively fixed with follower gears, and racks are respectively fixed on the left support plate and the right support plate in the longitudinal direction corresponding to the follower gears.
8. The hydraulic scissors with servo-adjustable clearance according to claim 2, characterized in that: A pressure plate is provided on the other side of the sliding knife seat opposite to the synchronous shaft along the length direction, and a plurality of guide rod seats are provided on the side wall of the sliding knife seat above the pressure plate. A guide rod and a compression spring are connected between the guide rod seat and the pressure plate, one end of the guide rod is connected to the pressure plate, and a guide rod hole is provided at the other end of the guide rod corresponding to the position of the guide rod seat, and the compression spring is connected between the guide rod seat and the pressure plate.