Double suction cup worktable straight knife grinding machine

Abstract

This utility model discloses a double-suction-cup straight knife grinding machine, including a bed, a grinding head assembly, suction cup worktables, and a blade positioning drive mechanism. Two suction cup worktables are arranged parallel to each other at equal heights on the bed and can rotate synchronously in opposite directions. The blade positioning drive mechanism is installed on the outer side of each suction cup worktable. A blade positioning component is provided between the inner sides of the two suction cup worktables. This blade positioning component is driven to move up and down by a positioning component drive device. Blade positioning surfaces are vertically provided on the left and right sides of the upper end of the blade positioning component. The distance from one blade positioning surface to the rotation axis of its corresponding side suction cup worktable is equal to the distance from the other blade positioning surface to its corresponding side suction cup worktable rotation axis. The lower inner corner of each suction cup worktable is rounded. The double-suction-cup straight knife grinding machine of this utility model can achieve positioning of the cutting edge lines of the two straight knives to be ground on the double-suction-cup worktables, and it has a compact structure and is easy to use.

Description

Technical Field

[0001] This utility model relates to a grinding device, and more particularly to a grinding device used for the side surface and the beveled edge of a blade during the machining of a flat straight knife. Background Technology

[0002] Sheet-shaped straight blades are widely used in industries such as papermaking, printing, textiles, fibers, food, forestry, plastics, and wood. As their usage continues to expand, there is a need to continuously improve the production efficiency of sheet-shaped straight blade manufacturing. Conventional straight blade grinding machines hold the cutting blades to be ground on a chuck table within the machine bed. The grinding head grinds the sides and bevels of the blades by adjusting the angle of the chuck table. However, this design limits each grinding machine to grinding only one row of straight blades. To improve grinding efficiency, a double-chuck table grinding machine was developed. This machine has two chuck tables mounted parallel to each other on the machine bed. Each chuck table can hold a straight blade to be ground. One chuck table can be in grinding operation while the other is in the mounting and positioning state for the blades. Alternatively, the grinding head above both chuck tables can simultaneously grind the blades on both tables, increasing production efficiency. However, this double-chuck table grinding machine suffers from the problem of inconvenient blade positioning; the blades require precise positioning during grinding. To ensure the cutting edge is parallel to the chuck table, especially when grinding beveled cutting edges, this positioning requirement is even higher. The ideal positioning method is to directly use the cutting edge line of the straight cutter to be ground for positioning. This requires the positioning device of the straight cutter to be placed on the side where the cutting edge is located. The positioning device needs to have a corresponding positioning component to make the cutting edge line of the straight cutter fit with it. After positioning, the positioning component should not affect the grinding of the cutting tool. Therefore, the positioning component is retracted away from the working range of the grinding wheel, which requires a certain amount of space. For grinding machines with a single chuck table, there is no problem because the space between the chuck table and the opposite side of the machine bed is relatively large. However, for grinding machines with a double chuck table, the cutting edge of the straight cutter to be ground is located between the two chuck tables, and the distance between the two chuck tables is very small. The positioning device commonly used for single chuck tables is no longer applicable. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a double suction cup worktable straight knife grinding machine, which can realize the positioning of the cutting edge line of the two straight knives to be ground on the double suction cup worktable, and has a compact structure and is easy to use.

[0004] To solve the above-mentioned technical problems, this utility model provides a double-suction cup worktable straight knife grinding machine, including a bed, a grinding head assembly, and a suction cup worktable rotatably supported in the bed. A blade positioning drive mechanism is installed on one side of the suction cup worktable. The two suction cup worktables are arranged parallel at equal heights on the bed. The two suction cup worktables can be driven to rotate synchronously in opposite directions by a worktable corner drive device. The blade positioning drive mechanism is installed on the outer side of each suction cup worktable. A blade positioning component is provided between the inner sides of the two suction cup worktables. This blade positioning component is driven to move up and down by a positioning component drive device. Blade positioning surfaces are respectively provided on the left and right sides of the upper end of the blade positioning component. These blade positioning surfaces are vertically arranged and parallel to the longitudinal direction of the suction cup worktable. Each blade positioning surface and the corresponding blade positioning drive mechanism constitute a blade positioning device. The distance from one blade positioning surface to the rotation axis of its corresponding side suction cup worktable is equal to the distance from the other blade positioning surface to its corresponding side suction cup worktable rotation axis. The lower inner corner of each suction cup worktable is rounded.

[0005] In the above structure, since the two suction cup worktables are arranged parallel at the same height on the bed, the two suction cup worktables can be driven to rotate synchronously in opposite directions by the worktable rotation drive device. Thus, the grinding machine can grind the side surfaces of straight cutters of the same thickness on the two suction cup worktables at the same time. After the two suction cup worktables rotate synchronously in opposite directions, the rotation angles are opposite but the angle values ​​are the same, which can make the beveled cutting edges of the two straight cutters to be ground at the same horizontal plane at the same time, so that the beveled cutting edges of the two straight cutters can be ground at the same time.

[0006] Furthermore, since the blade positioning drive mechanism is installed on the outside of each suction cup worktable, and a blade positioning component is provided between the inner sides of the two suction cup worktables, the blade positioning component is driven to move up and down by the positioning component drive device. Blade positioning surfaces are provided on the left and right sides of the upper end of the blade positioning component. The blade positioning surfaces are vertically arranged and parallel to the longitudinal direction of the suction cup worktable. Each blade positioning surface and the corresponding blade positioning drive mechanism constitute a blade positioning device. The distance from one blade positioning surface to the rotation axis of its corresponding side suction cup worktable is equal to the distance from the other blade positioning surface to the rotation axis of its corresponding side suction cup worktable. Therefore, the blade positioning surfaces provided on the left and right sides of the blade positioning component can simultaneously position the straight cutters to be ground on the left and right suction cup worktables. When positioning is required, the blade positioning component is driven to move up into the positioning working position by the positioning component drive device. The blade positioning drive mechanisms installed on the left and right suction cup worktables are activated, pushing the straight cutters to be positioned on their respective suction cup worktables toward the blade positioning component until the cutting edge of the straight cutter contacts and fits with the positioning surface of the blade positioning component. The positioning of the straight cutters on the two suction cup worktables is completed simultaneously. Subsequently, the blade positioning component is driven by the positioning component drive device to move down to the lowest position below the working surface of the suction cup worktable, making room for the grinding of the straight blade. The entire positioning process can be automatically realized, which is highly efficient. Furthermore, there is no need to increase the distance between the two suction cup worktables, making the structure compact and easy to use.

[0007] Furthermore, since the lower inner corners of each suction cup worktable are rounded, when the suction cup worktable is rotated to grind the beveled edge of a straight tool, the lower inner corners of the two oppositely rotating suction cup worktables will not enter the space between the two suction cup worktables. This prevents movement interference with the blade positioning component and related components, better ensuring the successful implementation of the blade positioning component within the narrow space between the two suction cup worktables.

[0008] In a preferred embodiment of this invention, the table rotation drive device is a servo motor, with one servo motor corresponding to each suction cup worktable. Using this embodiment, the servo motor can drive the suction cup worktable to rotate and precisely control its rotation angle, ensuring that the rotation angles of the two oppositely rotating suction cup worktables are equal, thus achieving simultaneous grinding of the straight cutters on both suction cup worktables.

[0009] In another preferred embodiment of this utility model, the blade positioning component is movably inserted between two left and right positioning component guide supports, which are fixedly connected to the machine bed. With this embodiment, the blade positioning component is located between the two positioning component guide supports, and its vertical movement and positioning operations can be stably achieved. The two positioning component guide supports can be installed using the space left by the rounded corners at the lower inner side of the suction cup worktable, resulting in a compact structure.

[0010] In another preferred embodiment of this utility model, the positioning component driving device is a pneumatic cylinder or hydraulic cylinder mounted on the bed. With this embodiment, the pneumatic or hydraulic cylinder operates stably, facilitating automated control.

[0011] In a further preferred embodiment of this invention, the two ends of the lower end face of the blade positioning member are respectively connected to the piston rod end of the cylinder or hydraulic cylinder. With this embodiment, the blade positioning member and the positioning member drive device are reliably connected.

[0012] In another preferred embodiment of this invention, the upper edge of the positioning surface of the blade positioning member is vertically shifted between above and below the horizontal working surface of the suction cup worktable, and the lower edge of the positioning surface of the blade positioning member is vertically shifted below the horizontal working surface of the suction cup worktable. This embodiment minimizes the lifting stroke of the blade positioning member while meeting the requirements for straight blade positioning.

[0013] In another preferred embodiment of this utility model, the blade positioning drive mechanism includes a blade positioning push arm located above the working surface of the suction cup worktable. The blade positioning push arm is driven by a rotary cylinder mounted on the side of the suction cup worktable, and the swing plane of the blade positioning push arm is parallel to the working surface of the suction cup worktable. With this embodiment, the blade positioning drive mechanism has a simple structure and can easily push the straight blade towards the workpiece positioning component until its cutting edge contacts and adheres to the corresponding positioning surface. After positioning, the blade positioning push arm can be withdrawn from the working surface of the suction cup worktable by reversing the rotary cylinder, without affecting the grinding of the grinding head.

[0014] In a further preferred embodiment of this invention, the radius of the rounded corner at the lower inner side of the suction cup worktable is equal to the distance from the inner surface of the suction cup worktable to the center of the rotation axis. With this embodiment, the rounded corner at the lower inner side of the suction cup worktable is tangent to the corresponding side surface, resulting in a reasonable structure. Attached Figure Description

[0015] The following is a detailed description of the double suction cup worktable straight knife grinding machine of this utility model, with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a schematic diagram of a specific embodiment of the double suction cup worktable straight knife grinding machine of this utility model;

[0017] Figure 2 yes Figure 1 A partial enlarged view of the blade positioning component and related parts in the structure shown;

[0018] Figure 3 yes Figure 1 The top view of the suction cup worktable and related components in the structure shown.

[0019] In the figure: 1-bed, 2-positioning component drive device, 3-positioning component guide support, 4-suction cup worktable, 5-blade positioning component, 6-blade positioning surface, 7-blade positioning drive mechanism, 8-grinding head assembly, 9-blade positioning push arm, 10-rotary cylinder. Detailed Implementation

[0020] exist Figure 1In the double-suction table straight knife grinding machine shown, the grinding head assembly 8 is movably supported on the bed 1 along the length of the bed 1 via bed guide rails on both sides of the top of the bed 1. Two suction table 4 are rotatably supported in the bed 1. The two suction table 4 are arranged parallel at equal heights in the bed 1, and their rotation axis is parallel to the bed guide rails. The two suction table 4 can be driven to rotate synchronously in opposite directions by a table rotation drive device (not shown in the figure). The table rotation drive device is preferably a servo motor, and each suction table 4 is provided with a corresponding servo motor. Alternatively, the two suction table 4 can be driven to rotate synchronously in opposite directions by a servo motor through a related transmission mechanism. The lower inner corner of the suction table 4 is rounded, and the radius of the rounded lower inner corner of the suction table 4 is preferably equal to the distance from the inner surface of the suction table 4 to the center of the rotation axis.

[0021] A blade positioning drive mechanism 7 is installed on one side of the suction cup worktable 4, see [link / reference]. Figure 3 The blade positioning drive mechanism 7 includes a blade positioning push arm 9, which is located above the working surface of the suction cup worktable 4. The blade positioning push arm 9 is driven by a rotary cylinder 10 installed on the side of the suction cup worktable 4. The swing plane of the blade positioning push arm 9 is parallel to the working surface of the suction cup worktable 4. There are at least two sets of blade positioning drive mechanisms 7 distributed at intervals along the length of the suction cup worktable 4. The number of these sets is determined according to the length and number of straight cutters being ground. Each straight cutter to be ground requires at least two sets of blade positioning drive mechanisms 7 to push it to achieve the positioning operation. Each blade positioning drive mechanism 7 is installed on the outside of each suction cup worktable 4.

[0022] A blade positioning element 5 is provided between the inner sides of the two suction cup worktables 4. (See) Figure 2 The blade positioning component 5 is movably inserted between the left and right positioning component guide supports 3. The guide support surface of the positioning component guide support 3 is in contact with the corresponding side of the blade positioning component 5. The two positioning component guide supports 3 are fixedly connected to the bed 1. The length of the blade positioning component 5 corresponds to the length of the suction cup worktable 4. The blade positioning component 5 is driven to move up and down by the positioning component drive device 2. The positioning component drive device 2 is preferably a cylinder or hydraulic cylinder mounted on the bed 1. The two ends of the lower end face of the blade positioning component 5 are respectively connected to the piston rod end of the cylinder or hydraulic cylinder.

[0023] Blade positioning surfaces 6 are provided on the left and right sides of the upper end of the blade positioning component 5. The blade positioning surfaces 6 are vertically arranged and parallel to the longitudinal direction of the suction cup worktable 4. Each blade positioning surface 6 and the corresponding blade positioning drive mechanism 7 constitute a blade positioning device to perform positioning operations on the straight blade on the suction cup worktable 4. The distance from one blade positioning surface 6 to the rotation axis of its corresponding side suction cup worktable 4 is equal to the distance from the other blade positioning surface 6 to the rotation axis of its corresponding side suction cup worktable 4. This ensures that after positioning, the distance from the edge of the cutting edge of the straight blade on the two suction cup worktables 4 to the axis of rotation of its suction cup worktable 4 is equal. After each suction cup worktable 4 is rotated in opposite directions by the same angle, the beveled cutting edges of the straight blades on the two suction cup worktables 4 can be on the same plane, so that the grinding head assembly 8 can grind the beveled cutting edges of the straight blades on the two suction cup worktables 4 at the same time.

[0024] The upper edge of the positioning surface of the blade positioning component 5 moves vertically between above and below the working surface of the horizontal suction cup worktable 4, while the lower edge of the positioning surface of the blade positioning component 5 moves vertically below the working surface of the horizontal suction cup worktable 4. When positioning of the straight blade on the two suction cup worktables 4 is required, the working surfaces of the two suction cup worktables 4 are horizontal. The positioning component drive device 2 drives the blade positioning component 5 to rise until the upper edge of the blade positioning surface 6 is higher than the working surface of the suction cup worktable 4. The blade positioning drive mechanism 7 moves through the blade positioning push arm 9 to push the straight blade towards the blade positioning component 5 until the cutting edge of the straight blade contacts and adheres to the blade positioning surface 6. The suction cup worktable 4 firmly holds the straight blade. The blade positioning drive mechanism 7 rotates in the opposite direction, causing the blade positioning push arm 9 to move away from directly above the working surface of the suction cup worktable 4. At the same time, the positioning component drive device 2 drives the workpiece positioning component 5 to descend below the working surface of the suction cup worktable 4, providing working space for the grinding of the straight blade.

[0025] The above are only some preferred embodiments of this utility model, but this utility model is not limited thereto, and many improvements and modifications can be made. Any improvements and modifications made based on the basic principles of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A double-suction-cup straight blade grinding machine, comprising a bed (1), a grinding head assembly (8), and a suction-cup worktable (4) rotatably supported in the bed (1), and a blade positioning drive mechanism (7) mounted on one side of the suction-cup worktable (4), characterized in that: The two suction cup worktables (4) are arranged at the same height and parallel to each other on the bed (1). The two suction cup worktables (4) can be driven to rotate synchronously in opposite directions by the worktable corner drive device. The blade positioning drive mechanism (7) is installed on the outside of each suction cup worktable (4). A blade positioning component (5) is provided between the inner sides of the two suction cup worktables (4). The blade positioning component (5) is driven to move up and down by the positioning component drive device (2). Blade positioning surfaces (6) are provided on the left and right sides of the upper end of the blade positioning component (5). The blade positioning surfaces (6) are set vertically and parallel to the longitudinal direction of the suction cup worktable (4). Each blade positioning surface (6) and the opposite blade positioning drive mechanism (7) constitute a blade positioning device. The distance from one blade positioning surface (6) to the rotation axis of its corresponding side suction cup worktable (4) is equal to the distance from the other blade positioning surface (6) to the rotation axis of its corresponding side suction cup worktable (4). The lower inner corner of each suction cup worktable (4) is rounded.

2. The double-suction cup worktable straight knife grinding machine according to claim 1, characterized in that: The worktable rotation drive device is a servo motor, and each suction cup worktable (4) is equipped with a corresponding servo motor.

3. The double-suction cup worktable straight knife grinding machine according to claim 1, characterized in that: The blade positioning component (5) is movably inserted between the left and right positioning component guide supports (3), and the two positioning component guide supports (3) are fixedly connected to the bed (1).

4. The double-suction cup worktable straight knife grinding machine according to claim 1, characterized in that: The positioning component drive device (2) is a cylinder or oil cylinder installed on the bed (1).

5. The double-suction cup worktable straight knife grinding machine according to claim 4, characterized in that: The two ends of the lower end face of the blade positioning member (5) are respectively connected to the piston rod end of the cylinder or oil cylinder.

6. The double-suction cup worktable straight knife grinding machine according to claim 1, characterized in that: The upper edge of the positioning surface of the blade positioning component (5) moves up and down between the top and bottom of the working surface of the horizontal suction cup worktable (4), and the lower edge of the positioning surface of the blade positioning component (5) moves up and down below the working surface of the horizontal suction cup worktable (4).

7. The double-suction cup worktable straight knife grinding machine according to claim 1, characterized in that: The blade positioning drive mechanism (7) includes a blade positioning push arm (9), which is located above the working surface of the suction cup worktable (4). The blade positioning push arm (9) is driven by a rotary cylinder (10) installed on the side of the suction cup worktable (4). The swing plane of the blade positioning push arm (9) is parallel to the working surface of the suction cup worktable (4).

8. The double-suction cup worktable straight knife grinding machine according to claim 1, characterized in that: The radius of the rounded corner of the lower inner side of the suction cup worktable (4) is equal to the distance from the inner surface of the suction cup worktable (4) to the center of the rotating shaft.

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