CN219582364U

CN219582364U - Knife clamping workbench of knife grinder

Info

Publication number: CN219582364U
Application number: CN202320943428.4U
Authority: CN
Inventors: 石联河
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-08-25
Anticipated expiration: 2033-04-24

Abstract

The utility model discloses a knife clamping workbench of a knife grinder, which comprises a knife supporting plate, wherein a knife clamping mechanism is arranged on the upper surface of the knife supporting plate, a workbench is arranged below the knife supporting plate, and the rear end of the knife supporting plate is hinged with the workbench, and the knife clamping workbench is characterized in that: two sides or the bottom of the front part in the cutter supporting plate are symmetrically hinged with two supporting rods, the lower ends of the two supporting rods are symmetrically hinged with a sliding block, the sliding block is arranged on a guide rail arranged on the workbench in the front-back direction, and a screw rod parallel to the guide rail passes through a screw hole in the middle of the sliding block, is arranged on the workbench and is driven by a motor. The utility model has the following beneficial effects: (1) The sliding block can be conveniently driven by the motor to adjust the included angle between the cutter and the grinding surface of the grinding tool, and the stability is high. (2) Through the scale, the inclination angle can be obtained, and the required grinding included angle can be accurately adjusted. And (3) the knife clamping mechanism is simple to operate and high in stability.

Description

Knife clamping workbench of knife grinder

Technical Field

The utility model relates to a knife clamping workbench for a knife grinder, in particular to a knife clamping workbench for fixing a knife to be sharpened, which is used for automatically adjusting the included angle between a knife and the grinding surface of the grinder.

Background

The knife edge becomes blunt due to the problems of abrasion of the blade part, edge rolling, chipping and the like in the using process of the knife such as kitchen knife, hacking knife, meat cutting knife, boning knife and the like, and the knife edge needs to be ground to become sharp again. The traditional sharpening mode is that a master sharpeners manually sharpens by using a sharpening stone and an oilstone, so that the efficiency is low, and the work which looks simple is actually a technology, and a sharpening worker is a professional.

The grinding efficiency is improved to a certain extent by using electric tools such as grinding wheels, abrasive belts and the like to carry out rough grinding and then manually carrying out fine grinding by using oilstones and the like, but the technical difficulty is not greatly reduced, and key factors which influence the grinding quality, such as the angle between the cutting edge and the grinding tool and the pressing force during grinding are mainly controlled by experience.

In recent years, more advanced knife sharpeners have been developed, in which a slide is driven by a screw to move horizontally, a vertical slide rail is mounted on the slide rail, a rotary grinding tool composed of a motor and a cylindrical oilstone is mounted on the slide rail via the slide rail, and a tool clamping table is used for clamping a tool to be sharpened. Since the cutting edge is an acute angle with a very small angle, an acute angle is formed between the grinding working surface of the grinder and the surface of the cutter in order to grind the cutting edge, which requires that the grinding working surface of the grinder be inclined relative to the surface of the cutter. In order to form the included angle, one mode is that the cutter is horizontally fixed, the grinding tool and the vertical sliding rail thereof are slightly inclined, but the gravity of the grinding tool in the mode generates vertical component force on the surface of the vertical sliding rail, and the component force can increase the abrasion of the vertical sliding rail and is eccentric. Meanwhile, the inclination angle of the heavy grinding tool is not easy to design into an adjustable structure. In another scheme, one end of the clamping tool workbench is hinged, the other end of the clamping tool workbench is stably supported by two bolts, the horizontal inclination angle of the clamping tool workbench can be changed by adjusting the extending lengths of the two bolts, but in this way, the extending lengths of the two bolts are difficult to be guaranteed to be completely consistent when the bolts are manually adjusted, the stability of the clamping tool workbench is poor when the length deviation exists, and uneven abrasion is formed due to the fact that the arc-shaped edge of the end part of the bolt is contacted with and pressed against the lower supporting plate, the head of the bolt becomes non-circular, the adjusting difficulty is further increased, and the stability is reduced.

In view of the above, the inventor obtains the knife clamping workbench of the knife grinder through repeated design and test according to the years of cutter processing experience.

Disclosure of Invention

Aiming at the problems of poor stability and difficult angle adjustment of the existing knife grinder knife clamping workbench, the utility model aims to provide the knife grinder knife clamping workbench which has the advantages of convenient angle adjustment and high stability.

The utility model is realized by the following technical scheme: the utility model provides a knife grinder presss from both sides sword workstation, includes the cutter backup pad, has clamp knife mechanism at cutter backup pad upper surface, has the workstation below the cutter backup pad, and cutter backup pad rear end is articulated with the workstation, in the both sides or the bottom of cutter backup pad middle part, and the symmetry articulates there are two bracing pieces, and two bracing piece lower extreme symmetry articulates on a slider, and the slider is installed on the guide rail of workstation, and the screw parallel with the guide rail passes slider middle part screw and installs on the workstation to by motor drive. The motor drives the screw rod to rotate, so that the sliding block can be pushed to slide back and forth along the guide rail, the front part of the cutter supporting plate is supported by the two supporting rods, the cutter supporting plate is lifted or lowered by a certain angle around the rear end hinge shaft, the inclination angle of the cutter supporting plate is changed, and the included angle of a cutter installed on the cutter supporting plate relative to the grinding surface of the grinding tool is changed.

Further, a rotation angle scale is provided on the tool support plate or the table.

The rotary angle scale can be a pointer and an angle dial which are arranged on a hinge shaft of the cutter supporting plate and the workbench, the angle dial is fixed relative to the workbench, the pointer is fixed relative to the cutter supporting plate to synchronously rotate, and the inclination angle of the cutter supporting plate, namely the inclination angle of the cutter to be processed, can be directly read.

The rotation angle scale can also be a vertical ruler which is arranged on one side of the workbench and is far away from a hinge shaft of the cutter supporting plate and the workbench, and the inclination angle of the cutter supporting plate is directly or indirectly marked by utilizing scales corresponding to the edges of the upper surface of the cutter supporting plate or scales corresponding to the position scales arranged on the side surfaces of the cutter supporting plate.

The rotary angle scale can also be an arc angle scale which is arranged on one side of the cutter supporting plate and far away from the hinging shaft of the cutter supporting plate and the workbench, the scale is provided with angle scales, the top end of the scale is 0 and the scales from top to bottom become larger, and the workbench is provided with a horizontal position scale at the horizontal plane position of the center of the circle of the hinging shaft of the cutter supporting plate. When the cutter supporting plate is positioned at the horizontal position, the upper surface of the horizontal position scale is just exposed to the 0 scale of the angle scale, when the motor supports the cutter supporting plate through the screw rod, the sliding block and the supporting rod, the angle scale moves upwards synchronously with the cutter supporting plate, the corresponding angle scale on the upper surface of the horizontal position scale is increased, the inclination angle of the cutter supporting plate is displayed, namely, the inclination angle of the cutter is very visual and easy to read, and compared with the former two modes, the precision is higher.

Further, a shielding plate extends downwards at the periphery of the cutter supporting plate to cover the motor, the guide rail, the sliding block, the lead screw, the supporting rod and the hinge shaft, so that cooling water flowing during sharpening can be prevented from entering the motor, the guide rail, the lead screw, the hinge shaft and the like to influence operation.

Further, a supporting block is fixed on the cutter supporting plate or the workbench between the front end of the cutter supporting plate and the workbench, so that the support is provided in a horizontal state, and long-term stress of the sliding block is avoided.

Furthermore, a spring is arranged between the front end of the cutter supporting plate and the workbench and is fixed on the cutter supporting plate or the workbench, and the free state height of the spring is larger than the height of the supporting block, so that a boosting force is provided when the horizontal position is used for initially driving the tilting, and the clamping of the sliding block is avoided.

The guide rail is two parallel cylindrical guide rails, and the screw rod is positioned between the two cylindrical guide rails.

Further, at least one pair of cutter clamping mechanisms is mounted on the upper surface of the cutter supporting plate. The knife clamping mechanism comprises a pressing rod, the pressing rod is hinged to a hinged seat in a knife supporting plate through a first hinge shaft, the pressing rod is hinged to the front end of an operating rod through a second hinge shaft, the middle of the operating rod is hinged to the end of a connecting rod through a third hinge shaft, the other end of the connecting rod is hinged to the hinged seat in the knife supporting plate through a fourth hinge shaft, a handle is formed at the rear end of the operating rod, and a rubber head is arranged at the end of the pressing rod to form elastic pressing force and improve friction force on a knife, so that the knife is prevented from sliding during grinding. The multi-link lever type cutter clamping mechanism compresses the cutter by utilizing the lever principle, is convenient to operate, has a locking point and is not loosened after the cutter is compressed.

Further, the rubber head is arranged on a screw rod, the screw rod penetrates through the end part of the pressure rod and is positioned by an upper nut and a lower nut, and the clamping force can be conveniently adjusted by changing the downward extending length of the screw rod through an adjusting nut.

The utility model has the following beneficial effects:

(1) The included angle between the cutter and the grinding surface of the grinding tool can be conveniently adjusted by the motor driving sliding block, and the stability is high.

(2) Through the scale, the inclination angle can be obtained, and the required grinding included angle can be accurately adjusted and controlled.

(3) The knife clamping mechanism is simple to operate and high in stability.

Drawings

FIG. 1 is a front view of an automatic knife grinder;

FIG. 2 is a cross-sectional view A-A of the automatic knife sharpener of FIG. 1;

fig. 3 is a schematic view of a knife holder table of the automatic knife grinder shown in fig. 1 and 2;

FIG. 4 is a schematic side view of the knife clamping table of the knife sharpener of FIG. 3 in a tilted state;

FIG. 5 is a schematic view of a knife holder table of the knife grinder with a shield;

fig. 6-8 are schematic diagrams of knife grinder knife clamping workbench with angle scale;

fig. 9 is a schematic view of the open state of the knife clamping mechanism.

In the figure, 1, a rack, 2, a water pump, 3, a motor, 4, a ball screw, 5, a guide rail, 6, a proximity switch, 7, a sliding block, 8, a motor, 9, a screw, 10, a horizontal sliding rail, 11, a cylindrical grinding stone, 12, a motor, 13, a motor, 14, a controller, 15, a vertical sliding rail, 16, a tool clamping table, 17, a tool, 18, an angle adjusting mechanism, 19, a water storage tank, 20, a filter material, 21, a horizontal sliding block, 22 and a vertical sliding block; 23. the device comprises springs, 24, motors, 25, lead screws, 25a, guide rails, 26, sliding blocks, 27, supporting rods, 28, cutter supporting plates, 29, hinge shafts, 30, springs, 31, supporting blocks, 32 and shielding plates; 33. a table, 34, an angle scale; 35. a position scale; 36. an angle scale; 37. a pointer;

16a, first hinge shaft, 16b, second hinge shaft, 16c, third hinge shaft, 16d, fourth hinge shaft, 160, hinge seat, 161, operation lever, 162, compression bar, 163, nut, 164, screw, 165, rubber head.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the preferred embodiments to facilitate understanding of the contents of the utility model.

As shown in fig. 1 and 2, an automatic knife grinder invented by the inventor comprises a frame 1 for mounting and fixing various devices and parts. The knife grinder knife clamping table is formed by arranging a knife clamping table 16 and an angle adjusting mechanism 18 for adjusting the inclination angle of the knife clamping table 16 on the frame 1 in the middle, so that a certain acute included angle is formed between the cutting edge of a knife 17 and the grinding surface of a cylindrical grinding stone in a grinding tool. At the rear part of the frame, two horizontal slide rails 10 with V-shaped grooves and a screw rod 9 driven by a motor 8 are arranged, a horizontal slide block 21 which is arranged on the horizontal slide rail 10 and provided with a screw hole in the middle part passing through the screw rod 9, and a horizontal reciprocating mechanism is formed together with the screw rod 19, the motor 8 and the horizontal slide rail 10 so as to realize horizontal reciprocating motion of a grinding tool arranged on the horizontal slide block 21. The grinding tool consists of a motor 12 and a cylindrical grinding stone 11, wherein the lower end surface of the grinding stone 11 is a grinding working surface which is in contact with the cutting edge of a cutter 17 to grind the cutting edge. The motor 12 of the grinder is fixed on the vertical slider 22, the vertical slider 22 is mounted on the vertical slide rail 15 in a manner of sliding up and down, and the vertical slide rail 15 is mounted on the horizontal slider 21 of the automatic horizontal reciprocating mechanism, so that the grinder can move up and down to change the distance with the cutter and the grinding pressure, and can move horizontally and horizontally in a reciprocating manner to change the grinding position with the cutter edge, and the edge part of the whole cutter 17 is ground.

In the lifting driving mechanism in this embodiment, as shown in fig. 1 and 2, a dual-shaft motor 13 is installed at the top of a vertical sliding rail 15 (or a horizontal sliding block 21), flexible ropes formed by a section of steel wire ropes are respectively wound on output shafts at two ends of the motor 13, the lower ends of the flexible ropes are connected with a spring 23, the lower ends of the springs 23 are connected with a vertical sliding block 22 (or a motor 12), and the springs 23 serve as elastic members to connect a grinding tool and the lifting driving mechanism. The grinding tool formed by the motor 12 and the grinding stone 11 can be downwards or upwards pulled up along the vertical sliding rail 15 through the steel wire rope and the spring 23 by controlling the motor 13 to run forwards and backwards, and the grinding tool is far away from the cutter during pulling up so as to leave an operation space for taking and placing the cutter. When the cutter is ground, the cutter is contacted with the cutter through the falling grinding tool, the pressure of the cutter to the cutter is the gravity of the cutter and the elastic tension of the spring 12 to the cutter, so that the tension change of the spring 23 to the cutter can be controlled through the motor 13, the tension can be adjustable between 0 (the dead weight of the cutter is completely under the dead weight of the cutter and the dead weight of the cutter is not stretched), and the tension is in linear relation with the elongation of the spring 23 (namely, the contact pressure of the cutter to the cutter is also in linear relation with the elongation of the spring 23), so that the grinding pressure of the cutter to the cutter is determined and adjusted according to the elongation of the spring (a scale or a range finder can be arranged on a sliding block or a motor or a sliding rail). The pressure sensor can be arranged at one end of the spring, the pressure value can be obtained by direct measurement and is connected with the controller 14 of the motor 13 to form an automatic control loop, and the pressure value can be set according to the requirements of different cutter grinding pressures (such as the hardness and sharpness of the cutter) so as to realize automatic control and adjustment of the grinding pressure. This is especially effective to arc cutting edge, can realize guaranteeing under the invariable circumstances of pressure, and the grinding apparatus height is along with cutting edge radian automatic adjustment, guarantees that different positions grind the volume and is unanimous basically.

As shown in fig. 1, 2 and 3, two cylindrical guide rails 5 are horizontally installed on the machine frame 1 below the horizontal reciprocating mechanism at the height position of the tool clamping table, a positive and negative ball screw 4 driven by a motor 3 is installed between the two cylindrical guide rails 5, and a sliding block 7 installed on the guide rails 5 is driven by a positioning motor 3 and the positive and negative ball screw 4 to move synchronously and oppositely along the guide rails 5 or away from each other. The pair of proximity switches 6 for controlling the reciprocating stroke range, namely the grinding range, of the horizontal reciprocating mechanism are arranged on the sliding block 7, the sliding block 7 is also extended to the direction of the cutter clamping table, and the end part of the ruler is slightly lower than the upper surface of the cutter, so that the cutter and the grinding tool are not influenced. After the cutter is placed on the cutter clamping table, the motor 3 can be started through a key on the controller 14, the sliding blocks 7 are close to the cutter from two sides, when the scaleplate is close to or reaches two ends of the cutter edge, the motor 3 is stopped, and at the moment, the two proximity switches 6 are just in the correct positions. Because the proximity switch 6 is shielded by the grindstone of the grinder to obtain a signal for controlling the motor to rotate reversely, the position of the proximity switch 6 in the embodiment is slightly more than the outer side of the scale, namely, the outer side of the grindstone of the grinder is ensured to slightly extend out of the cutter blade by a certain distance, and the effective grinding of the two ends of the blade is ensured. According to the technology, the positioning motor 3 and the screw 4 control a pair of proximity switches 6 to synchronously move in opposite directions or reversely move, so that the grinding range of the grinding tool along the direction of the cutting edge can be conveniently adjusted according to the length of the tool, and meanwhile, the correct placing position of the tool is calibrated, namely the center position of the tool is consistent with the center position of the stroke of the grinding tool. The lower part is a water storage tank 19 and a water pump 2 for spraying cooling water to the cutter, and a filter material 20 is arranged in the water storage tank for filtering out impurities such as grinding stones, metal scraps and the like in the used cooling water.

The tool clamping table is constructed as shown in fig. 2, 3 and 4 and includes a tool support plate 28 for positioning and supporting the tool 17. The cutter holder has a cutter holder mechanism formed by an operation lever 161, a pressing lever 162, a bolt 164, and a rubber head 165 on the upper surface of the cutter holder plate. The lower part of the cutter supporting plate 28 is provided with a workbench 33 for being arranged on a frame, the rear end of the cutter supporting plate 28, namely the left end in the drawing, is hinged with the workbench 33 through a hinge shaft 29, two supporting rods 27 are symmetrically hinged on two sides (shown in fig. 4) or the bottom (shown in fig. 2) of the middle front part of the cutter supporting plate 28, the lower ends of the two supporting rods 27 are symmetrically hinged on a sliding block 26, the sliding block 26 is arranged on two cylindrical guide rails 25a arranged on the workbench 33 in a front-back mode, a lead screw 25 parallel to the guide rails is arranged between the two cylindrical guide rails 25a, and the lead screw 25 is arranged on the workbench 33 through a middle screw hole of the sliding block 26 and is driven by a motor 24. The motor 24 drives the screw rod 25 to rotate, so that the slide block 26 can be pushed to slide back and forth along the guide rail 25a, and the front part of the cutter supporting plate 28 is supported by the two supporting rods 27 to be lifted or lowered rotationally around the rear end hinge shaft 29, so that the inclination angle of the cutter supporting plate 28 relative to the horizontal plane (the workbench 33) is changed, and the included angle of the cutter 17 mounted on the cutter supporting plate 28 relative to the grinding surface of the grinding tool is changed.

When the tool support plate 28 is lowered to the horizontal position, the hinge axis of the support rod 27 to the tool support plate 28 is higher than the hinge axis of the support rod to the slider, so that the support rod 27 is initially set obliquely, and when the slider 26 moves forward (right side in the drawing), the oblique support rod 27 generates a component force perpendicular to the tool support plate 28, which causes the tool support plate 28 to rotate about the hinge axis 29. It will be readily appreciated that the larger the angle of inclination, the larger the initial force component obtained, the more advantageous it is to drive the tool support plate in rotation. For compact structure and reduced material consumption, the thicknesses of the tool support plate 28 and the table 33, and the relative mounting heights thereof are not easily too large, so that the initial inclination angle of the support rod 27 is small, and in order to avoid jamming of the slider 26 during initial movement, as shown in fig. 4, a spring 30 is mounted and fixed on the tool support plate or the table between the front end of the tool support plate 28 and the table 33, so that an auxiliary pushing force is provided by the spring 30. In addition, at the front end of the tool supporting plate 28, a supporting block 31 is fixed on the tool supporting plate to provide support in a horizontal state, the weight of the tool supporting plate and the tool thereon is not completely supported by the supporting rod 27, the sliding block 26 and the spring 30, so that the damage to the threads of the sliding block and the screw rod caused by long-time stress of the sliding block 26 is avoided, and the free state height of the spring 30 is larger than the height of the supporting block 31 to provide initial assistance.

Because the knife sharpening will be carried out by flushing the knife 17 with cooling water, the cooling water will flow down or splash along the knife supporting plate 28, the cooling water also contains oilstones and metal abrasive dust, in order to avoid that water or such impurities enter the motor or enter the fit clearance of the screw rod, the sliding block, the hinge shaft and the like, the working smoothness and the service life are affected, as shown in fig. 5, a shielding plate 32 extends downwards at the periphery of the knife supporting plate 28 to cover the motor, the guide rail, the sliding block, the screw rod, the supporting rod and the hinge shaft, so as to form protection.

Fig. 6-8 show three embodiments of a tool sharpener workbench with a rotary angle scale, through which the tilt angle data of the tool support plate can be displayed directly or indirectly (in need of conversion), so as to accurately control the tilt angle according to different tool research needs.

In one embodiment, as shown in fig. 6, the rotation angle scale is a pointer 37 and an angle scale 36 mounted on a hinge shaft 29 hinged to the workbench at the rear end of the tool support plate 28, and the angle scale 36 is marked with an angle scale and fixed relative to the workbench 33, that is, the angle chassis 36 does not rotate. The pointer 37 is fixed for synchronous rotation relative to the tool support plate 28. When the front end of the tool support plate 28 is supported, the pointer 37 rotates synchronously, pointing to different scales on the angle disc, so that the inclination angle of the tool support plate, i.e. the inclination angle of the tool to be machined, can be directly read. The scale accuracy of the angle dial 36, which is related to the radius and the pointer length, is limited in space, and thus has a disadvantage of low accuracy.

In the embodiment shown in fig. 7, the angle scale 34 is a vertical common ruler mounted on one side of the worktable 33 and far away from the hinging shaft of the cutter supporting plate and the worktable, and the scale corresponding to the edge of the upper surface of the cutter supporting plate 28 or the scale corresponding to the position scale 35 which is mounted on the side surface and penetrated by the ruler can be used for directly reading the height change from the scale 34, and converting the inclination angle of the cutter supporting plate according to a trigonometric function. Naturally, the scale on the ruler can be converted angle, and the angle value can be directly read. To avoid that the scale 34 affects the mounting of the tool, the scale mounting position cannot be advanced forward (to the right in the drawing) beyond the tool mounting position, so that the angular accuracy can be higher than in the embodiment shown in fig. 6, but it is difficult to further improve.

In the embodiment shown in fig. 8, the rotation angle scale 34 is an arc-shaped angle scale mounted on one side of the tool support plate 28 and away from the hinge shaft 29, the scale has an angle scale, the scale top is "0", and the scale from top to bottom becomes larger, for example, the maximum angle scale is "20" in the figure. A horizontal position scale 35 is provided on the table 33 at a horizontal position of the center of the hinge shaft 29. When the cutter supporting plate 28 is completely horizontal, the upper surface of the horizontal position scale 35 just exposes the 0 scale of the angle scale 34, when the motor supports the cutter supporting plate 28 through the screw rod, the sliding block and the supporting rod, the angle scale 34 moves upwards along with the cutter supporting plate, the angle scale of the angle scale 34 corresponding to the upper surface of the horizontal position scale 35 is increased, the inclination angle of the cutter supporting plate, namely the inclination angle of the cutter, is directly displayed, and the cutter is quite visual and easy to read. Since the angle scale 34 is fixed to the side surface of the tool support plate 28 at the upper end thereof and does not exceed the upper surface of the tool support plate 28, the mounting position thereof can be further away from the hinge shaft 29 than in the manner shown in fig. 7 without affecting the mounting of the tool, and the scale accuracy is higher than in the former two manners.

The knife clamping mechanism is shown in fig. 4 and 9, and a pressing rod 162 is hinged on the upper surface of the knife supporting plate 17 through a first hinge shaft 16a to a saddle-shaped hinge seat 160, so that the first pressing rod 162 is hinged on the knife supporting plate 28. The pressing rod 162 is hinged to the front end of an operating rod 161 through a second hinge shaft 16b, the middle part of the operating rod 161 is hinged to the end of a connecting rod 163 through a third hinge shaft 16c, the other end of the connecting rod 163 is hinged to a hinge seat 160 on the upper surface of the cutter supporting plate 28 through a fourth hinge shaft 16d, and the rear end of the operating rod 161 forms a handle. The end of the pressing rod 162 is provided with a screw rod 164, the screw rod 164 passes through the end of the pressing rod 162 and is positioned by an upper double nut 163 and a lower double nut 163, and the lower end of the screw rod 164 is provided with a rubber head 165. The clamping force of the rubber head 165 on the cutter can be conveniently adjusted by changing the downward extending length of the screw 164 through the adjusting nut 163. As shown in fig. 2 and 6, when the tail end of the lever 161 is depressed, the second hinge point 16b, the third hinge point 16c and the fourth hinge point 16d are substantially in a straight line, and the link 163 and the lever 161 substantially horizontally support the second hinge point 16b of the pressing lever 162, so that the rubber head 165 presses the cutter 17 against the cutter supporting plate 18. In the utility model, two points of the cutter are clamped by two sets of link mechanisms, so that elastic pressing force is formed on the cutter 17 through a rubber head, the friction force is improved, and the cutter is prevented from sliding during grinding. When the handle of the operation lever 161 in the state shown in fig. 4 is lifted upward as shown in fig. 9, the link 163 is rotated upward and leftward in the drawing about the fourth hinge shaft 16d, and is V-shaped with the operation lever 161, and the third hinge shaft 16c is moved upward and leftward in fig. 4, the front end of the operation lever 161 is pushed downward and leftward by the second hinge shaft 16b to rotate about the first hinge shaft 16a while the front end thereof is lifted together with the screw 164 and the rubber-plastic head 165, and the cutter 17 is released from the cutter-clamping state. The multi-connecting-rod cutter clamping mechanism compresses the cutter by utilizing the lever principle, is convenient to operate, has a locking point (the third hinge shaft 16c is positioned on the connecting line of the second hinge shaft and the fourth hinge shaft or is slightly lower than the connecting line), does not loosen after compressing the cutter, and is more convenient and quick than the traditional cutter clamping and cutter clamping state releasing by screwing bolts.

Each motor is controlled by the controller 14, and the controller 14 adopts PLC control, so that parameters such as pressure, angle and the like corresponding to different cutters can be set.

The above embodiments are merely understood by those skilled in the art that modifications of the embodiments based on the same or similar principles fall within the scope of the utility model.

Claims

1. The utility model provides a knife grinder presss from both sides sword workstation, includes the cutter backup pad, has clamp sword mechanism at cutter backup pad upper surface, and there is the workstation cutter backup pad below, and cutter backup pad rear end and workstation are articulated, its characterized in that: two sides or the bottom of the front part in the cutter supporting plate are symmetrically hinged with two supporting rods, the lower ends of the two supporting rods are symmetrically hinged with a sliding block, the sliding block is arranged on a guide rail on a workbench, and a screw rod parallel to the guide rail passes through a screw hole in the middle of the sliding block to be arranged on the workbench and driven by a motor.

2. The knife sharpener clamping table of claim 1 wherein: a rotation angle scale is arranged on the cutter supporting plate or the workbench.

3. The knife sharpener clamping table of claim 2 wherein: the rotary angle scale is a pointer and an angle dial which are arranged on a hinge shaft of the cutter supporting plate and the workbench, the angle dial is fixed relative to the workbench, and the pointer is fixed relative to the cutter supporting plate to synchronously rotate.

4. The knife sharpener clamping table of claim 2 wherein: the rotary angle scale is a vertical ruler which is arranged on one side of the workbench and far away from a hinge shaft of the cutter supporting plate and the workbench, and the inclination angle of the cutter supporting plate is directly or indirectly marked by utilizing the scales corresponding to the position scales arranged on the edge of the upper surface of the cutter supporting plate or the side surface of the cutter supporting plate.

5. The knife sharpener clamping table of claim 2 wherein: the rotary angle scale is an arc angle scale which is arranged on one side of the cutter supporting plate and far away from a hinging shaft of the cutter supporting plate and the workbench, an angle scale is arranged on the scale, the top end of the scale is 0 and the scale from top to bottom is enlarged, and a horizontal position scale is arranged on the workbench at the position of the circle center horizontal plane of the hinging shaft at the rear end of the cutter supporting plate.

6. The knife sharpener clamp table of one of claims 1 to 5, wherein: and a shielding plate downwards extends at the periphery of the cutter supporting plate to cover the motor, the guide rail, the sliding block, the lead screw, the supporting rod and the hinge shaft.

7. The knife sharpener clamp table of one of claims 1 to 5, wherein: the cutter clamping mechanism is characterized in that a pressing rod is hinged to a hinged seat on the cutter supporting plate through a first hinge shaft on the upper surface of the cutter supporting plate, the pressing rod is hinged to the front end of an operating rod through a second hinge shaft, the middle part of the operating rod is hinged to the end part of a connecting rod through a third hinge shaft, the other end of the connecting rod is hinged to the hinged seat on the cutter supporting plate through a fourth hinge shaft, a handle is formed at the rear end part of the operating rod, and a rubber head is arranged at the end part of the pressing rod to form elastic pressing force on the cutter and improve friction force.

8. The knife sharpener clamping table of claim 7 wherein: the rubber head is arranged on a screw rod, and the screw rod penetrates through the end part of the compression bar and is positioned by an upper double nut and a lower double nut.

9. The knife sharpener clamp table of one of claims 1 to 5, wherein: and a supporting block is fixed on the cutter supporting plate or the workbench between the front end of the cutter supporting plate and the workbench.

10. The knife sharpener clamping table of claim 9 wherein: and a spring is arranged between the front end of the cutter supporting plate and the workbench and is fixed on the cutter supporting plate or the workbench, and the free state height of the spring is larger than the height of the supporting block.