Multi-cutter co-grinding stable clamping device

Abstract

The utility model discloses a multi-cutter co-grinding stable clamping device which comprises an electromagnetic chuck workbench, a plurality of blade pressing plates are installed on one side of the electromagnetic chuck workbench at intervals in the length direction of the electromagnetic chuck workbench, and the blade pressing plates are movably arranged in the transverse direction and the vertical direction of the electromagnetic chuck workbench. A pressing driving mechanism is installed on the electromagnetic chuck workbench and is in transmission connection with the blade pressing plate. A blade supporting pad is further installed on the electromagnetic chuck workbench, at least one blade supporting face is arranged on the blade supporting pad, and the height of each blade supporting face corresponds to the height of the blade overlapped below the blade supported by the blade supporting face. The multi-cutter co-grinding stable clamping device can reliably fix a plurality of blades which are overlapped up and down and installed in a staggered mode.

Description

Technical Field

[0001] The utility model relates to a sheet-shaped straight knife sharpener, in particular to an improvement of a blade clamping device of the sharpener. Background Art

[0002] In order to improve the production efficiency of the sheet straight knife sharpener in the process of grinding the bevel of the straight knife edge, multiple straight knife blades can be overlapped up and down and arranged in a horizontal staggered manner so that the bevel of the edge of each straight knife blade is on the same plane. In this way, the grinding wheel can grind the bevel of the edge of multiple overlapping blades at the same time. Compared with the conventional method of grinding one blade by suction on a suction cup workbench, the production efficiency is significantly improved. Since this multi-blade simultaneous grinding process requires the blades to be overlapped up and down, relying solely on the electromagnetic suction force generated by the electromagnetic chuck workbench will not ensure the reliable fixation of the blades on the upper layer. Generally speaking, an auxiliary clamping device can be used to press the blades on the electromagnetic chuck workbench, but since the blades must be arranged in a transverse staggered manner, the side of the upper blade opposite to the cutting edge must be in a suspended state, especially when the bevel angle of the cutting edge is small, the more obvious the transverse misalignment of the blades, then even if an auxiliary clamping device is used, it will be difficult for the auxiliary clamping device to find a suitable clamping force point because the side opposite to the cutting edge is in a suspended state. If the transverse size of the blade is relatively small, the force point of the auxiliary clamping device may have been located outside the width direction of the lowest blade, and reliable fixation of the blade will be difficult to achieve, and the purpose of improving production efficiency through multi-blade grinding cannot be achieved. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a multi-blade co-grinding stable clamping device, which can reliably fix multiple blades that are overlapped and staggered.

[0004] In order to solve the above technical problems, the utility model provides a multi-blade co-grinding stable clamping device, including an electromagnetic chuck workbench, on one side of the electromagnetic chuck workbench are installed a plurality of blade pressure plates at intervals along the length direction of the electromagnetic chuck workbench, the blade pressure plates are movably arranged in the horizontal and vertical directions along the electromagnetic chuck workbench, a clamping drive mechanism is installed on the electromagnetic chuck workbench, and the clamping drive mechanism is transmission-connected to the blade pressure plate; a blade support pad is also installed on the electromagnetic chuck workbench, and at least one blade support surface is provided on the blade support pad, and the height of each blade support surface corresponds to the height of the blade overlapped below the blade it supports.

[0005] In the above structure, since a number of blade pressing plates are installed at intervals along the length direction of the electromagnetic chuck workbench on one side of the electromagnetic chuck workbench, the straight knife blades to be ground and placed overlapping each other are not only clamped by the electromagnetic suction force of the electromagnetic chuck workbench, but can also be clamped by the blade pressing plates, which can provide sufficient clamping force for the straight knife blades to be ground; and since the blade pressing plates are movably arranged in the transverse and vertical directions along the electromagnetic chuck workbench, a clamping drive mechanism is installed on the electromagnetic chuck workbench, which is transmission-connected to the blade pressing plates, the blade pressing plates can be driven by the clamping drive mechanism to extend above the blades to be ground after the blades to be ground are positioned and placed, and apply a clamping force downwards, pressing each blade against the surface of the electromagnetic chuck workbench to ensure normal grinding. After the grinding is completed, the clamping drive mechanism operates in reverse, causing the blade pressing plates to be lifted and It retracts from the clamping position to make room for the positioning operation of the blade to be ground, thereby ensuring smooth installation and positioning of the blade; and because a blade support pad is also installed on the electromagnetic chuck workbench, at least one blade support surface is provided on the blade support pad, and the height of each blade support surface corresponds to the height of the blade overlapped below the blade it supports. Then, each blade support surface on the installed blade support pad can support the left and right suspended parts of the corresponding blades except the bottom layer, and the height of each blade support surface corresponds to the height of the blade overlapped below the blade it supports. In this way, no matter how small the size of the blade in the width direction is or how small the angle value of the cutting edge bevel is, the stability of the blade pressure plate on the overlapping and laterally displaced blades can be guaranteed, thereby reliably fixing the multiple overlapping and displaced blades.

[0006] In a preferred embodiment of the present invention, a pressure plate support is fixedly connected to the side of the electromagnetic chuck workbench, a pressure plate support rod is fixedly connected to the pressure plate support, a support rod slot is provided on the blade pressure plate, the pressure plate support rod passes through the support rod slot, a compression spring is mounted on the pressure plate support rod, the blade pressure plate is supported on the compression spring via a spherical washer, a limit portion is provided at the upper end of the pressure plate support rod, and a spherical washer is provided between the limit portion and the blade pressure plate. With this embodiment, the compression spring can keep the blade pressure plate in an upward position at all times, the limit portion defines the highest position of the blade pressure plate at this position, and the support rod slot on the blade pressure plate can allow the blade pressure plate to shift forward and backward along the length direction of the blade pressure plate, that is, laterally along the electromagnetic chuck workbench. In this way, the blade pressure plate can move laterally and vertically along the electromagnetic chuck workbench under the drive of the clamping drive mechanism, realizing the blade pressure plate extending forward and downward to implement clamping and retracting and lifting out of the clamping position to yield to the installation positioning action requirements.

[0007] In another preferred embodiment of the present invention, the limiting portion is formed by two nuts screwed to the upper end of the pressure plate support rod and tightened together. With this embodiment, the two nuts can be adjusted up and down on the upper end of the pressure plate support rod to achieve the optimal working state of pressing and lifting the blade pressure plate.

[0008] In another preferred embodiment of the present invention, the clamping drive mechanism includes a clamping drive rod hingedly connected to the rear end of the blade pressure plate, the other end of the clamping drive rod being fixedly connected to a drive shaft, which is rotatably supported on the pressure plate support. In this embodiment, the clamping drive rod can be swung by the drive shaft, causing the rear end of the blade pressure plate to move up, down, left, and right along the arc trajectory of the extended end of the clamping drive rod. The entire blade pressure plate is then constrained by the pressure plate support rod and its upper limit portion to move in a planar manner within the transverse plane of the electromagnetic chuck worktable. Accordingly, the front end of the blade pressure plate can achieve the required movement requirements of extending forward to press downward and retracting to raise and clear the blade pressure plate.

[0009] In a further preferred embodiment of the present invention, the drive shaft is driven by a rotary cylinder. This embodiment facilitates the automation of the blade pressing device, provides stable pressing, and allows two or more rotary cylinders to drive the drive shaft simultaneously.

[0010] In another preferred embodiment of the present invention, the blade support pad is a stepped integral component, and each step surface of the stepped component is a blade support surface. With this embodiment, the blade support pad has a simple structure and is easy to manufacture and install.

[0011] In another preferred embodiment of the present invention, the blade support pad is formed by stacking multiple support blocks in a stepped manner, with the upper surface of each stacked support block serving as the blade support surface. This embodiment allows the blade support pad to flexibly adjust the height of the blade support surface to meet the support requirements of blades of varying thicknesses.

[0012] In a further preferred embodiment of the present invention, the blade support pad is mounted on the electromagnetic chuck workbench via a steel base plate at the bottom, and the blade support pad is fixed to the steel base plate via screws. With this embodiment, the steel base plate can be fixed to the electromagnetic chuck workbench by the electromagnetic suction force of the electromagnetic chuck workbench, and the blade support pad can be conveniently and flexibly installed and connected to the electromagnetic chuck workbench via the steel base plate.

[0013] In another further preferred embodiment of the present invention, the blade support pad is made of an elastic material. This embodiment, wherein the blade support pad is made of a material having a certain elasticity, such as polyurethane, can reduce the manufacturing precision requirements, and the height of each blade support surface only needs to be slightly higher than the height of the blade overlapped below the supported blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following is a further detailed description of the multi-tool co-grinding stable clamping device of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a structural diagram of a specific embodiment of the multi-tool co-grinding stable clamping device of the utility model;

[0016] Figure 2 yes Figure 1 A cross-sectional view of the structure shown at position AA;

[0017] Figure 3 yes Figure 2 A schematic structural diagram of an embodiment of a blade support pad in the structure shown;

[0018] Figure 4 yes Figure 2 A schematic structural diagram of another embodiment of the blade support pad in the structure shown.

[0019] In the figure: 1- clamping drive mechanism, 2- electromagnetic chuck workbench, 3- blade support pad, 4- blade pressure plate, 5- support rod long slot, 6- pressure plate support rod, 7- clamping drive rod, 8- drive shaft, 9- pressure plate support, 10- rotary cylinder, 11- blade to be ground, 12- limit part, 13- spherical washer, 14- compression spring, 15- steel base plate, 16- blade support surface, 17- support block. DETAILED DESCRIPTION

[0020] exist Figure 1 and Figure 2In the multi-tool co-grinding stable clamping device shown, the electromagnetic chuck workbench 2 is a rectangular parallelepiped component on which an electromagnetic chuck is provided. The working surface of the electromagnetic chuck is the table top of the electromagnetic chuck workbench 2. Both ends of the electromagnetic chuck workbench 2 are rotatably supported on the bed of the knife sharpener by a servo motor through a rotating shaft. A plurality of blade pressing plates 4 are installed at intervals along the length direction of the electromagnetic chuck workbench 2 on one side of the electromagnetic chuck workbench 2. A pressing plate support 9 is fixedly connected to the side of the electromagnetic chuck workbench 2. A pressing plate support rod 6 is fixedly connected to the pressing plate support 9. 4 is provided with a support rod long slot 5, the length direction of the support rod long slot 5 is parallel to the length direction of the blade pressure plate 4, the pressure plate support rod 6 passes through the support rod long slot 5, and a compression spring 14 is set on the pressure plate support rod 6. The blade pressure plate 4 is supported on the compression spring 14 through a spherical washer 13. A limiting portion 12 is provided at the upper end of the pressure plate support rod 6. The limiting portion 12 is preferably two nuts that are screwed onto the upper end of the pressure plate support rod 6 and tightened to each other. A spherical washer 13 is provided between the limiting portion 12 and the blade pressure plate 4, so that the blade pressure plate 4 is movably arranged in the horizontal and vertical directions along the electromagnetic chuck workbench 2. A clamping drive mechanism 1 is installed on the electromagnetic chuck workbench 2, and the clamping drive mechanism 1 is transmission-connected to the blade pressure plate 4. As a preferred embodiment, the clamping drive mechanism 1 includes a clamping drive rod 7 hinged to the rear end of the blade pressure plate 4, and the other end of the clamping drive rod 7 is fixedly connected to the drive shaft 8 through a connecting key. The connecting key is preferably a spline, and the drive shaft 8 is rotatably supported on the corresponding pressure plate support 9 through a shaft seat. The drive shaft 8 is driven by a rotary cylinder 10. After the blade 11 to be ground is positioned and placed, the rotary cylinder 10 in the clamping drive mechanism 1 drives each clamping drive rod 7 to swing toward the electromagnetic chuck workbench 2 through the drive shaft 8, and the clamping drive rod 7 causes the rear end of the corresponding blade pressure plate 4 to move upward and forward. , the front end of the blade pressing plate 4 extends forward accordingly and presses down the blade 11 to be ground to apply a pressing force. Under the joint action of the electromagnetic suction force of the electromagnetic chuck workbench 2, each blade 11 to be ground is reliably clamped. Thereafter, the electromagnetic chuck workbench 2 rotates a certain angle so that the cutting edge bevel of each blade 11 to be ground is in a horizontal state, and the grinding head on the knife grinder can grind the cutting edge bevels of multiple blades at the same time; after the grinding is completed, the electromagnetic chuck workbench 2 rotates in the opposite direction so that its workbench surface is in a horizontal state, and the rotary cylinder 10 in the clamping drive mechanism 1 runs in the opposite direction, and the clamping drive rod 7 is used to shift the rear end of the blade pressing plate 4 backward and downward, and accordingly the front end of the blade pressing plate 4 is lifted up and retracted away from the clamping position to Figure 2 The position shown by the double-dot chain line in the middle makes the required operating space for taking out the blade after grinding and installing and positioning the blade 11 to be ground next time.

[0021] A blade support pad 3 is also installed on the electromagnetic chuck workbench 2. The blade support pad 3 is provided with at least one blade support surface 16. The height of each blade support surface 16 corresponds to the height of the blade overlapped below the blade it supports. The blade support pad 3 is preferably made of an elastic material such as polyurethane. The height of each blade support surface 16 thereon is slightly higher than the height of the blade overlapped below the blade it supports. After the suspended protruding parts of the blades 11 to be ground, which are overlapped and staggered left and right, are placed on the corresponding blade support surfaces 16, the blade support pad 3 made of the elastic material will be elastically deformed after the blade pressure plate 4 is pressed down, so that the height of each blade support surface 16 is equal to the height of the blade overlapped below the blade it supports, ensuring the stability of the position of the blade 11 to be ground after being pressed by the blade pressure plate 4. Figure 3 The blade support pad 3 is a stepped integral component, and each step surface of the stepped component is a blade support surface 16; the structure of the blade support pad 3 can also be as follows Figure 4 As shown, the blade support pad 3 is formed by stacking multiple support blocks 17 in a stepped manner, and the upper surface of each stacked support block 17 is the blade support surface 16. Figure 3 and Figure 4 As shown, the blade support pad 3 is fixed to the steel base plate 15 by screws. In this way, the blade support pad 3 can be installed on the electromagnetic chuck workbench 2 through the bottom steel base plate 15, and the blade support pad 3 is installed and fixed by the electromagnetic suction of the electromagnetic chuck workbench 2. The blade support pad 3 can be in the form of a long strip corresponding to the length of the blade 11 to be ground, and each group of overlapping blades 11 to be ground corresponds to one long strip blade support pad 3. It can also be in the form of a short block with a length slightly larger than the width of the blade pressure plate 4. Each group of overlapping blades 11 to be ground corresponds to two short block blade support pads 3, and their installation positions correspond to the positions of the blade pressure plate 4.

Claims

1. A multi-tool co-grinding stable clamping device, comprising an electromagnetic chuck workbench (2), characterized in that: A plurality of blade pressing plates (4) are installed at intervals along the length direction of the electromagnetic chuck workbench (2) on one side of the electromagnetic chuck workbench (2). The blade pressing plates (4) are movably arranged in the horizontal and vertical directions along the electromagnetic chuck workbench (2). A pressing drive mechanism (1) is installed on the electromagnetic chuck workbench (2). The pressing drive mechanism (1) is in transmission connection with the blade pressing plates (4). A blade supporting pad (3) is also installed on the electromagnetic chuck workbench (2). At least one blade supporting surface (16) is provided on the blade supporting pad (3). The height of each blade supporting surface (16) corresponds to the height of the blade overlapped below the blade supported by the blade supporting surface (16).

2. The multi-tool co-grinding stable clamping device according to claim 1, characterized in that: A pressure plate support (9) is fixedly connected to the side of the electromagnetic chuck workbench (2), a pressure plate support rod (6) is fixedly connected to the pressure plate support (9), a support rod long groove (5) is provided on the blade pressure plate (4), the pressure plate support rod (6) passes through the support rod long groove (5), a compression spring (14) is sleeved on the pressure plate support rod (6), the blade pressure plate (4) is supported on the compression spring (14) through a spherical washer (13), a limiting portion (12) is provided at the upper end of the pressure plate support rod (6), and a spherical washer (13) is provided between the limiting portion (12) and the blade pressure plate (4).

3. The multi-tool co-grinding stable clamping device according to claim 2, characterized in that: The limiting portion (12) is two nuts screwed to the upper end of the pressure plate support rod (6) and fastened to each other.

4. The multi-tool co-grinding stable clamping device according to claim 1 or 2, characterized in that: The pressing drive mechanism (1) comprises a pressing drive rod (7) hinged to the rear end of the blade pressing plate (4); the other end of the pressing drive rod (7) is fixedly connected to a driving shaft (8); and the driving shaft (8) is rotatably supported on a pressing plate support (9).

5. The multi-tool co-grinding stable clamping device according to claim 4, characterized in that: The driving shaft (8) is driven by a rotary cylinder (10).

6. The multi-tool co-grinding stable clamping device according to claim 1, characterized in that: The blade support pad (3) is a stepped integral component, and each step surface of the stepped component is a blade support surface (16).

7. The multi-tool co-grinding stable clamping device according to claim 1, characterized in that: The blade support pad (3) is formed by stacking a plurality of support blocks (17) in a stepped manner, and the upper surface of each stacked support block (17) is a blade support surface (16).

8. The multi-tool co-grinding stable clamping device according to claim 1, 6 or 7, characterized in that: The blade support pad (3) is installed on the electromagnetic chuck workbench (2) through a steel base plate (15) at the bottom, and the blade support pad (3) is fixed to the steel base plate (15) through screws.

9. The multi-tool co-grinding stable clamping device according to claim 8, characterized in that: The blade support pad (3) is a component made of elastic material.

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