Cutting bed and knife grinding device thereof

Abstract

The utility model provides a cutter grinding device of a cutting bed. The cutter grinding device comprises a cutter grinding sand column, a rotation driving member; a sliding part is connected to the sliding rail in a sliding mode, and the sliding part is connected with the rotary driving piece and the sharpening sand column; the buffering mechanism comprises a buffering shifting rod and a buffering seat plate connected with the sliding part, a guiding shaft and a buffering shaft which are parallel to each other are arranged in the buffering seat plate, and the buffering shaft is sleeved with a spring; a first open hole and a second open hole are formed in the buffer driving lever, and the first open hole is arranged on the guide shaft in a sleeving manner; the buffer shaft is sleeved with the second open hole. The buffer seat plate is further in threaded connection with an adjusting knob, one end of the spring abuts against the adjusting knob, and the other end of the spring abuts against the buffer deflector rod; and the output end of the linear displacement driving part is connected with the buffer shifting rod. The utility model further provides a cutting bed which comprises the cutter grinding device. The knife sharpener has the advantages that stable knife sharpening pressure is provided, and knife sharpening work data are more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting machines, in particular to a cutting machine and a knife sharpening device thereof. Background Art

[0002] When the cutting table is working, the stacked fabrics are attached to each other after vacuum adsorption. They are thicker and harder. The cutting blade of the cutting table will become less sharp after a period of use, and the cross section of the fabric will become rough and not smooth. If a new cutting blade is replaced, the cutting production cost will increase. Therefore, a sharpening device is added to the cutting table to achieve sharpening while cutting.

[0003] Currently, there are three types of knife sharpening methods for cutting machines: sand column sharpening, grinding wheel sharpening and sand belt sharpening. Among them, the effect of sand column sharpening is more ideal than other sharpening methods, but most of them use cylinder propulsion and rubber pad buffering, which leads to high sharpening pressure in the early stage of use and low sharpening pressure in the later stage of use. There is a problem of unsatisfactory sharpening effect due to different sharpening pressures, and it is not conducive to statistical statistics of different sharpening pressure requirements for different blade materials. Utility Model Content

[0004] In view of the above-mentioned defects, the purpose of the present utility model is to provide a cutting machine knife sharpening device, which can apply accurate and stable pressure to the blade during the sharpening process.

[0005] The utility model provides a cutting machine knife sharpening device for grinding cutting blades, comprising: a knife sharpening sand column; a rotating driving member for driving the knife sharpening sand column to rotate; a slide rail, on which a sliding part is slidably connected, and the sliding part is respectively connected to the rotating driving member and the knife sharpening sand column; a buffer mechanism, comprising a buffer lever and a buffer seat plate connected to the sliding part, the buffer seat plate is provided with a guide shaft and a buffer shaft parallel to each other, and a spring is sleeved on the buffer shaft; the buffer lever is respectively provided with a first opening and a second opening, the first opening is sleeved on the guide shaft; the second opening is sleeved on the buffer shaft; the buffer seat plate is also threadedly connected with an adjusting knob, one end of the spring is in contact with the adjusting knob, and the other end of the spring is in contact with the buffer lever; a linear displacement driving member, an output end of which is connected to the buffer lever.

[0006] Preferably, it further comprises a knife guard, which is arranged on a side of the cutting blade away from the sharpening sand column.

[0007] Preferably, the output end of the rotating drive member is coaxially connected with a driving wheel, a grinding sand column fixing plate is fixedly connected to the sliding portion, a first driven wheel and a second driven wheel are rotatably connected to the grinding sand column fixing plate, and the second driven wheel is coaxially connected to the grinding sand column; the driving wheel is drivingly connected to the first driven wheel, and the first driven wheel and the second driven wheel are drivingly connected.

[0008] Preferably, a shock-absorbing pad and a buffer pad are also provided on the guide shaft, and the first opening is located between the shock-absorbing pad and the buffer pad.

[0009] Preferably, the first opening is sleeved on the guide shaft via a linear bearing.

[0010] Preferably, the advancement stroke of the linear displacement driving member is greater than the initial spacing between the grinding sand column and the cutting blade.

[0011] Preferably, the linear displacement driving member is a cylinder.

[0012] The utility model also provides a cutting table, comprising the aforementioned knife sharpening device.

[0013] The utility model is beneficial in that:

[0014] 1. Providing stable sharpening pressure solves the problem of different pressures in the early and late stages of sharpening in the prior art, making sharpening work data more accurate and facilitating statistics of different sharpening pressures corresponding to different materials;

[0015] 2. The contact pressure between the grinding sand column and the cutting blade can be adjusted. Different contact pressures can be selected for different grinding conditions to achieve the best grinding effect;

[0016] 3. The cylinder piston rod is only subjected to axial force during operation and no longer bears other eccentric torques. The force is more reasonable and the buffer mechanism greatly increases the service life of the cylinder;

[0017] 4. The utility model adopts spring to achieve buffering, and the spring is protected by the buffer pad. The stability and practicality of the mechanism are higher than other elastic buffers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the knife sharpening device;

[0019] Figure 2 is a schematic diagram of the structure of the knife sharpening device with the linear displacement driving member, the first driven wheel and the synchronous belt removed;

[0020] Figure 3 It is a schematic diagram of the connection structure between the buffer mechanism, the sliding part and the grinding sand column;

[0021] Figure 4 It is a three-dimensional buffer mechanism Figure 1 ;

[0022] Figure 5 It is a three-dimensional buffer mechanism Figure 2 .

[0023] Component number description:

[0024] 1 Linear displacement drive

[0025] 2 Slide rails

[0026] 21 Sliding part

[0027] 31 Rotating drive element

[0028] 32 Driving wheel

[0029] 33 First driven wheel

[0030] 34 Second driven wheel

[0031] 4 Timing belt

[0032] 5 Sharpening Sand Column

[0033] 51 Grinding sand column fixing plate

[0034] 6 Cutting blade

[0035] 7 Knife guard

[0036] 8 Buffer mechanism

[0037] 81 Buffer seat

[0038] 82 Buffer lever

[0039] 821 First opening

[0040] 822 Second opening

[0041] 83 Guide shaft

[0042] 84 Linear bearings

[0043] 85 Buffer shaft

[0044] 86 Spring

[0045] 87 Shock absorber

[0046] 88 cushion

[0047] 89 Adjustment knob DETAILED DESCRIPTION

[0048] The following is a further detailed description of the specific implementations of the present invention in conjunction with the accompanying drawings. These implementations are only used to illustrate the present invention, but not to limit the present invention.

[0049] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Figure 1 The schematic diagram of the structure of the sharpening device is shown in FIG. Figure 1 The attached figure in the figure is used as a reference for the direction. Figure 1 In the figure, the front direction is perpendicular to the viewing paper and facing outward, the rear direction is perpendicular to the viewing paper and facing inward, the upward direction is along the viewing paper and facing downward is along the viewing paper, the right direction is along the viewing paper and facing left is along the viewing paper.

[0052] like Figure 1 and Figure 2 As shown, the utility model provides a cutting table knife sharpening device, which is used for grinding a cutting blade 6 arranged in a cutting table, and includes a knife sharpening sand column 5, a rotating driving member 31, a slide rail 2, a buffer mechanism 8 and a linear displacement driving member 1.

[0053] The rotary drive member 31 is used to drive the grinding sand column 5 to rotate at high speed to grind the cutting blade 6. The slide rail 2 is arranged in the left and right directions, and a sliding part 21 is slidably connected thereon. The sliding part 21 is respectively connected to the rotary drive member 31 and the grinding sand column 5, and the rotary drive member 31 and the grinding sand column 5 move synchronously with the sliding part 21. In a specific embodiment of the utility model, the rotary drive member 31 preferably adopts a motor, and its output end is coaxially connected with a driving wheel 32, and the sliding part 21 is fixedly connected to the grinding sand column fixing plate 51. The grinding sand column fixing plate 51 is respectively provided with a first rotating shaft and a second rotating shaft, and the first driven wheel 33 is installed on the first rotating shaft, and the second driven wheel 34 is installed on the second rotating shaft. At the same time, the second driven wheel 34 is coaxially connected to the grinding sand column 5. The driving wheel 32 is connected to the first driven wheel 33 through a synchronous belt transmission, and the first driven wheel 33 and the second driven wheel 34 are connected through a synchronous belt 4. During operation, the rotary drive member 31 drives the driving wheel 32 to rotate, and the driving wheel 32 drives the grinding sand column 5 to rotate synchronously through the first driven wheel 33 and the second driven wheel 34. Those skilled in the art can also change the connection structure between the rotary drive member 31 and the grinding sand column 5 as needed, such as directly connecting the grinding sand column 5 to the output end of the rotary drive member 31.

[0054] like Figure 3-5 As shown, the buffer mechanism 8 includes a buffer lever 82 and a buffer seat plate 81 connected to the sliding portion 21. A guide shaft 83 and a buffer shaft 85 are provided in parallel with each other in the buffer seat plate 81, both of which extend in the left-right direction. A spring 86 is sleeved on the buffer shaft 85. The buffer lever 82 is provided with a first opening 821 and a second opening 822, respectively. The first opening 821 is sleeved on the guide shaft 83; the second opening 822 is sleeved on the buffer shaft 85. An adjusting knob 89 is also threadedly connected to the buffer seat plate 81, one end of the spring 86 abuts against the adjusting knob 89, and the other end of the spring 86 abuts against the buffer lever 82.

[0055] The linear displacement driving member 1, whose output end is connected to the buffer lever 82, can drive the buffer lever 82 to move in the left and right direction, so that the sharpening sand column 5 and the cutting blade 6 are in contact or separated. The form of the linear displacement driving member 1 is not limited, and a linear cylinder, a hydraulic cylinder or a screw motor can be selected. The utility model preferably uses a cylinder as the linear displacement driving member 1. The plane formed by the guide shaft 83 and the buffer shaft 85 is parallel to the cylinder piston rod and is not coplanar, and the buffer shaft 85 is parallel to the cylinder piston rod and is not coaxial; the cylinder piston rod is only subjected to axial force during operation, and is no longer subjected to other eccentric torques, so the force is more reasonable, which helps to extend the service life of the cylinder.

[0056] Furthermore, the advancement stroke of the linear displacement drive 1 is greater than the initial spacing between the grinding sand column 5 and the cutting blade 6. The "advance stroke" here refers to the spacing between the minimum stroke position and the maximum stroke position of the output end of the linear displacement drive 1; the "initial spacing" refers to the spacing between the grinding sand column 5 and the cutting blade 6 when the output end of the linear displacement drive 1 is at the minimum stroke position. The difference between the advancement stroke and the initial spacing is 4-8mm.

[0057] The working principle of the utility model knife sharpening device is as follows:

[0058] The rotary drive member 31 drives the grinding sand column 5 to rotate at high speed. At the same time, the linear displacement drive member 1 works, and pushes the grinding sand column 5 to move rightward through the buffer lever 82, the buffer seat plate 81, the sliding part 21, and the grinding sand column fixing plate 51 until the grinding sand column 5 abuts against the cutting blade 6. The buffer seat plate 81, the sliding part 21, and the grinding sand column fixing plate 51 all reach their respective maximum stroke positions. Since the output end of the linear displacement drive member 1 has not yet moved to its maximum stroke position, it continues to push the buffer lever 82 to the right. At this time, the position of the buffer seat plate 81 remains unchanged, and the spring 86 is compressed by the buffer lever 82. The thrust of the linear displacement drive member 1 is converted into the pressure of the grinding sand column 5, so that the grinding sand column 5 contacts the cutting blade 6 under a certain pressure. The pressure of the grinding sand column 5 is determined by the elastic coefficient of the spring 86. In the process of grinding the cutting blade 6, the spring 86 plays a buffering role, which can prevent the thrust of the linear displacement drive member 1 from directly acting on the grinding sand column 5. In addition, the operator can also change the initial compression of the spring 86 and adjust the buffer force of the buffer mechanism 8 by turning the adjustment knob 89 to rotate it in or out of the buffer seat plate 81, thereby meeting different sharpening pressure requirements corresponding to different blade materials.

[0059] like Figure 1 As shown, the utility model further includes a blade guard 7, which is arranged on the side of the cutting blade 6 away from the grinding sand column 5 (i.e., the right side), and includes limit plates located at the front and rear sides of the cutting blade 6 and a blade guard located at the right side of the cutting blade 6. The limit plates can prevent the cutting blade 6 from shaking left and right, and the blade guard can support the cutting blade 6. The blade guard 7 can prevent the cutting blade 6 from tilting during the grinding process, ensuring a good grinding effect.

[0060] Combination Figure 4 and Figure 5It can be seen that the first opening 821 is sleeved on the guide shaft 83 through a linear bearing 84. The linear bearing 84 only allows the buffer lever 82 to move along the extension direction of the guide shaft 83, and the buffer lever 82 will not shake forward and backward or up and down. In order to ensure a good guiding effect, the number of guide shafts 83 and the first opening 821 are both two, and the buffer shaft 85 is arranged between the two guide shafts 83. The central axes of the three are located on the same vertical plane. One end of the guide shaft 83 is welded to the buffer seat plate 81, and the other end is detachably connected to the buffer seat plate 81.

[0061] Furthermore, a shock-absorbing pad 87 and a buffer pad 88 are also provided on the guide shaft 83, and the first opening 821 is located between the shock-absorbing pad 87 and the buffer pad 88. The shock-absorbing pad 87 is bonded to the left end of the guide shaft 83. When the output end of the linear displacement driving member 1 returns to the minimum stroke position, the shock-absorbing pad 87 can eliminate the noise generated by the collision between the buffer lever 82 and the buffer seat plate 81, thereby extending the service life of the buffer mechanism 8. The buffer pad 88 is bonded to the right end of the guide shaft 83. If the sharpening sand column 5 collides with foreign matter during movement, it can protect the spring 86 from being over-compressed and failing, thereby extending the service life of the spring 86. At the same time, the buffer pad 88 can also prevent the buffer lever 82 from overshooting. The shock-absorbing pad 87 and the buffer pad 88 are made of rubber or polyurethane.

[0062] The utility model also provides a cutting table, comprising the aforementioned knife sharpening device.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A cutting machine blade sharpening device for grinding cutting blades, characterized in that: include: Grinding sand column; A rotating drive member, used for driving the grinding sand column to rotate; A slide rail, on which a sliding part is slidably connected, and the sliding part is respectively connected to the rotating driving member and the grinding sand column; The buffer mechanism comprises a buffer lever and a buffer seat plate connected to the sliding part, wherein the buffer seat plate is provided with a guide shaft and a buffer shaft parallel to each other, and a spring is sleeved on the buffer shaft; the buffer lever is respectively provided with a first opening and a second opening, wherein the first opening is sleeved on the guide shaft; and the second opening is sleeved on the buffer shaft; an adjusting knob is also threadedly connected to the buffer seat plate, wherein one end of the spring abuts against the adjusting knob, and the other end of the spring abuts against the buffer lever; The linear displacement driving member has an output end connected to the buffer lever.

2. The cutting machine knife sharpening device according to claim 1, characterized in that: It also includes a knife guard portion, which is arranged on a side of the cutting blade away from the knife sharpening sand column.

3. The knife sharpening device according to claim 1, characterized in that: The output end of the rotating driving member is coaxially connected with a driving wheel, a grinding sand column fixing plate is fixedly connected to the sliding portion, a first driven wheel and a second driven wheel are rotatably connected to the grinding sand column fixing plate, and the second driven wheel is coaxially connected to the grinding sand column; the driving wheel is drivingly connected to the first driven wheel, and the first driven wheel and the second driven wheel are drivingly connected.

4. The knife sharpening device according to claim 1, characterized in that: A shock absorbing pad and a buffer pad are also provided on the guide shaft, and the first opening is located between the shock absorbing pad and the buffer pad.

5. The knife sharpening device according to claim 1, characterized in that: The first opening is sleeved on the guide shaft via a linear bearing.

6. The knife sharpening device according to claim 1, characterized in that: The advancement stroke of the linear displacement driving member is greater than the initial spacing between the sharpening sand column and the cutting blade.

7. The knife sharpening device according to claim 1, characterized in that: The linear displacement driving member is a cylinder.

8. A cutting machine, characterized in that: The utility model comprises a knife sharpening device as claimed in any one of claims 1 to 7.

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