A processing device and method for intermittently sawing hard material blocks

Abstract

The present application relates to a kind of processing device and method that can realize intermittent saw cutting hard material block, including movement unit, guide unit, intermittent mechanism unit, rack unit etc.The intermittent mechanism unit includes intermittent mechanism swing arm, gear, movable rack, rack positioning plate, support seat, coupling etc.;The intermittent mechanism swing arm is connected with upper connecting rod by coupling, ensure the synchronous operation of both.The rack includes a straight rack and a section of arc rack, the movable rack is installed in the dovetail groove of support seat, and its movement is limited by rack positioning plate.The present application can realize the intermittent saw cutting of device, solve the problem of sawtooth bidirectional stress in sawing process, improve the service life of sawtooth, and reduce the wear of sawtooth and processing material, significantly reduce energy consumption, achieve the purpose of energy saving.

Description

Technical Field

[0001] This invention relates to a processing method and apparatus for intermittently sawing hard material blocks, particularly to a sawing processing apparatus and method for hard stone materials such as granite, hard artificial stone blocks, and carbon fiber reinforced concrete, belonging to the field of construction machinery. Background Technology

[0002] A frame saw used for straight-line cutting of hard stone is effective when cutting hard and brittle materials, such as... Figure 1 As shown, the bidirectional sawing method results in a large contact area between the saw teeth and the stone, leading to high friction and significant stress on the saw blade. This makes it prone to instability and blade deviation. Simultaneously, the diamond saw teeth are subjected to bidirectional frictional sawing forces from the processed material, causing diamond particles to easily detach from the matrix, resulting in a short service life.

[0003] Therefore, bidirectional sawing is more suitable for sawing soft and brittle materials like marble, but it cannot meet the processing requirements of hard and brittle materials with high hardness, such as granite and carbon fiber reinforced concrete. Under the same processing parameters, the cutting tool will experience greater force when processing harder materials than when processing softer materials, which can lead to premature tool failure.

[0004] Patent CN104354230A discloses a processing device and working method for single-stroke sawing of hard stone. In this invention, by changing the eccentricity of the hinge mechanism, the eccentric structure causes the saw frame structure to form an approximately oblique line movement towards the upper left or upper right, thereby achieving the effect of single-stroke sawing of hard stone.

[0005] The patent with announcement number CN217531372U discloses a circulating blade-lifting stone saw. In this patent, four sets of eccentric rotating devices are provided above the gantry frame, so that the cutting saw device generates a cyclical sawing action, a blade lifting action, a reverse action, and a blade lowering action.

[0006] The patent with publication number CN218700184U discloses a cutting tool holder that can swing to raise and lower the blade. The purpose of this patent is to make the mounting base reciprocate along a parabolic trajectory.

[0007] All three patents mentioned above generate motion trajectories different from those used in horizontal machining. Patents (CN104354230A and CN217531372U) achieve the required action by changing the eccentricity of the hinge mechanism, but this requires specific dimensions of the equipment's components. Patent (CN218700184U) enables the equipment to reciprocate along a parabolic trajectory. Therefore, to enable a frame saw to cut granite, carbon fiber reinforced concrete, etc., the first step is to adjust the trajectory of the cutting device. Changing the trajectory effectively protects the diamond support on the frame saw teeth, preventing excessive wear or breakage, thus achieving the cutting of hard materials. However, while the impact-based devices in these three patents can guarantee the required cutting force for hard materials, excessive impact can easily cause instability in the sawing tool. Furthermore, the devices in these patents cannot guarantee sequential force distribution on the sawing tool through trajectory changes, and the finished workpiece's kerf remains horizontal, failing to effectively clean up the generated chips, resulting in chip residue remaining in the kerf. Summary of the Invention

[0008] The purpose of this invention is to provide a processing method and apparatus for intermittent sawing of hard and brittle materials, in order to solve the problems of bidirectional stress on the cutting tool, severe wear of the saw teeth, short service life and high energy consumption in the process of sawing hard materials (granite, carbon fiber reinforced concrete, etc.) under the existing technology.

[0009] To achieve the above objectives, the solution of the present invention is:

[0010] In a first aspect, the present invention proposes a device for intermittent sawing of hard materials, comprising a motion unit, a guide unit, an intermittent mechanism unit, and a frame unit;

[0011] The motion unit is connected to the saw frame and drives the saw frame to reciprocate relative to the material block.

[0012] The guide unit includes a swing body, an upper connecting rod, a lower connecting rod, and a central shaft of the swing body; one end of the central shaft of the swing body is pivotally connected to the lower part of the saw frame, and the other end is hinged to the swing body; one end of the swing body is connected to the lower end of the upper connecting rod, and the other end is connected to the upper end of the lower connecting rod; the upper end of the upper connecting rod is hinged to the swing arm of the intermittent mechanism; the lower end of the lower connecting rod is hinged to the frame.

[0013] The intermittent mechanism unit includes a swing arm, a gear, a movable rack, and a rack positioning plate; the swing arm is connected to the upper connecting rod, and the two operate synchronously; the swing arm drives the gear to move along the movable rack, which includes a straight rack section and an arc rack section; the movable rack is fixed on the frame unit.

[0014] As a further technical solution, the guide unit and the intermittent mechanism unit are grouped together, and a total of four groups are included. The four groups of guide units and intermittent mechanism units are respectively located in the front, back, left, and right directions of the saw frame.

[0015] As a further technical solution, in the two sets of guide units and intermittent mechanism units at the front, the two racks of the intermittent mechanism unit are installed face-to-face, forming a concave shape as a whole; in the two sets of guide units and intermittent mechanism units at the rear, the two racks of the intermittent mechanism unit are also installed face-to-face, forming a concave shape as a whole.

[0016] As a further technical solution, in the two sets of guide units and intermittent mechanism units at the front, the two racks of the intermittent mechanism unit are installed back to back, forming an upward convex shape as a whole; in the two sets of guide units and intermittent mechanism units at the rear, the two racks of the intermittent mechanism unit are also installed face to face, forming an upward convex shape as a whole.

[0017] As a further technical solution, the gear is a sector gear or a spur gear.

[0018] As a further technical solution, the rack can also be a straight rack plus two arc-shaped racks, with the two arc-shaped racks located at both ends of the straight rack, forming a concave shape as a whole.

[0019] As a further technical solution, a lifting control device is also included. This lifting device is driven by a motor and multi-stage gears, and ultimately acts on the lead screw on the block car to drive the hard material block to move upward for cutting.

[0020] As a further technical solution, the motion unit includes a flywheel, a main shaft, a crank connecting rod, and a saw frame; the center of the flywheel is connected to the main shaft, which is driven to rotate by a drive device, and the crank connecting rod is eccentrically connected to the flywheel, and the crank connecting rod is connected to the saw frame.

[0021] Secondly, based on the aforementioned device capable of intermittently sawing hard materials, the present invention also provides a processing method for intermittently sawing hard materials, which is mainly for processing when racks are installed face-to-face:

[0022] When the motion unit drives the saw frame to move to the right, the arc-shaped rack of the intermittent mechanism on the right side causes the right end of the saw frame to move upward, forming a left-low-right-high state. During the movement, the saw blade teeth cut the material sequentially. When the motion unit drives the saw frame to move to the left, the arc-shaped rack of the intermittent mechanism on the left side causes the left end of the saw frame to move upward, forming a left-high-right-low state. The saw blade teeth cut the material sequentially along the arc-shaped rack. The installation of the intermittent mechanism alleviates the problem of bidirectional force on the saw teeth during sawing in previous technologies, facilitates heat dissipation of the saw teeth, and allows the detached saw tooth debris to be removed in time, reducing the likelihood of saw jamming and wear between the saw teeth and the processed material. This significantly reduces energy consumption and achieves the goal of energy saving.

[0023] Thirdly, based on the aforementioned device capable of intermittently sawing hard materials, the present invention also provides a processing method for intermittently sawing hard materials, which is mainly for processing when racks are installed back-to-back:

[0024] When the motion unit drives the saw frame to the right, the arc-shaped rack of the intermittent mechanism on the left causes the left end of the saw frame to move upward, creating a left-low, right-high configuration. During this movement, the saw blade teeth sequentially cut the material. When the motion unit drives the saw frame to the left, the arc-shaped rack of the intermittent mechanism on the right causes the right end of the saw frame to move upward, creating a left-high, right-low configuration. The saw blade teeth sequentially cut the material along the arc-shaped rack. The intermittent mechanism alleviates the problem of bidirectional force on the saw teeth during sawing in previous technologies, facilitates heat dissipation of the saw teeth, and allows for timely removal of saw tooth debris, reducing the likelihood of jamming and wear between the saw teeth and the material. This significantly reduces energy consumption, achieving the goal of energy conservation.

[0025] With the above structure, the device for intermittent sawing of hard materials according to the present invention has the following beneficial effects:

[0026] 1. Because the intermittent mechanism can drive the saw frame unit to sequentially saw the material, it eliminates the risk of diamond tool breakage due to impact. Sequential material processing also reduces the stress on the cutting tool, making it less prone to instability. Moreover, the processed workpiece has an arc shape, which is more conducive to the timely removal of hard material debris.

[0027] 2. It achieves the intermittent sawing requirements of diamond tools, reduces the friction between the saw teeth and the material in the diamond tool, improves the sawing capacity and service life of the tool, thereby significantly reducing energy consumption and achieving the goal of energy saving. Attached Figure Description

[0028] Figure 1 It is a trajectory diagram of sawing soft, hard, and brittle materials in existing technologies;

[0029] Figure 2 This is a front view of the intermittent sawing device for hard materials according to the present invention;

[0030] Figure 3 This is a top view of the intermittent sawing device for hard materials according to the present invention;

[0031] Figure 4 This is a simplified structural diagram of the guide mechanism column and intermittent mechanism designed in this invention;

[0032] Figure 5 This is a motion trajectory diagram of the intermittent sawing device for hard materials designed in this invention;

[0033] Figure 6 This is a schematic diagram of the intermittent mechanism designed in this invention being installed face-to-face;

[0034] Figure 7 This is a schematic diagram of the back-to-back installation of the intermittent mechanism designed in this invention;

[0035] Figure 8(a) is a schematic diagram of one type of gear in the intermittent mechanism designed in this invention;

[0036] Figure 8(b) is a schematic diagram of another type of gear in the intermittent mechanism designed in this invention;

[0037] In the diagram: flywheel 1, main shaft 2, crank connecting rod 3, saw frame 4, guide unit 5, intermittent mechanism unit 6, frame 7, lifting control device 8, upper connecting rod 51, swing body 52, swing body central shaft 53, lower connecting rod 54, lower connecting rod shaft 55, upper connecting rod shaft 56, gear 61, intermittent mechanism swing arm 62, movable rack 63, rack positioning plate 64, intermittent mechanism support seat 65, coupling 66, gear shaft bearing support 67. Detailed Implementation

[0038] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0039] Example 1

[0040] This embodiment provides a device that can intermittently saw hard materials, such as... Figure 1 , Figure 2 As shown, it includes a motion unit, a guide unit, an intermittent mechanism unit, and a frame unit; the motion unit is connected to the guide unit, and the guide unit is connected to the intermittent mechanism unit. The guide unit and the intermittent mechanism cause the saw frame to tilt, as shown. Figure 5As shown, in each sawing process, only a portion of the saw blade teeth participate in the sawing, which alleviates the problem of bidirectional force on the saw teeth during sawing in previous technologies, facilitates heat dissipation of the saw teeth, and allows the detached saw tooth debris to be removed in time, making it less likely for the saw to jam. This reduces wear between the saw teeth and the material, thereby significantly reducing energy consumption and achieving the goal of energy saving.

[0041] Specifically, the aforementioned motion unit includes a flywheel 1, a main shaft 2, a crank connecting rod 3, and a saw frame 4. The center of the flywheel 1 is connected to the main shaft 2, which is driven to rotate by a drive device. The crank connecting rod 3 is eccentrically connected to the flywheel 1 and is connected to the saw frame 4. Therefore, when the flywheel 1 rotates under the drive of the drive device, it can move the saw frame 4 to the left or right relative to the frame unit. A saw blade is installed on the saw frame 4, so when the saw frame 4 moves, the saw blade also moves along with it.

[0042] Furthermore, the guide unit 5 mainly includes a swing body 52, an upper connecting rod 51, a lower connecting rod 54, and a swing body central shaft 53. The upper end of the upper connecting rod 51 is hinged to the swing arm 62 of the intermittent mechanism, and the lower end is hinged to the swing body 52 of the guide unit. The lower end of the lower connecting rod 54 is hinged to the frame 7, and the upper end is also hinged to the swing body 52. ​​The swing body central shaft 53 is pivotally connected at one end to the lower part of the saw frame 4, and the other end is hinged to the swing body 52. ​​When the saw frame 4 moves to the left, the swing body central shaft 53 also moves to the left, causing the upper connecting rod 51 to swing to the left, which in turn causes the gear to move to the right along the rack. When the saw frame 4 moves to the right, the swing body central shaft 53 also moves to the right, causing the upper connecting rod 51 to swing to the right, which in turn causes the gear to move to the left along the rack.

[0043] Furthermore, in this embodiment, the uprights of the frame unit 7 are integrated all-metal uprights.

[0044] The intermittent mechanism unit 6 in this embodiment includes an intermittent mechanism swing arm 62, a gear 61, a movable rack 63, a rack positioning plate 64, a support base 65, and a coupling 66. The intermittent mechanism swing arm 62 is connected to the upper connecting rod 51 of the guide unit 5 via the coupling 66 to ensure synchronous operation. The upper connecting rod 5 can transmit the movement of the guide unit 5 to the intermittent mechanism unit 6. The gear 61 is mounted on the intermittent mechanism swing arm 62, and the gear 61 meshes with the movable rack 63. The movable rack 63 is installed in the dovetail groove of the support base, and its movement is restricted by the rack positioning plate 64. That is, the gear 61 moves along the movable rack 63 under the drive of the guide unit 5, but the movable rack 63 remains stationary. Furthermore, in order to achieve the purpose of intermittent sawing in this invention, the movable rack 63 in this invention is not a common straight rack. It includes a straight rack section and an arc rack section. The arc rack section smoothly transitions to the straight rack section. By setting the arc rack section, the saw frame can be tilted to achieve intermittent sawing. Furthermore, the rack in this embodiment can also be a straight rack plus two arc-shaped racks, with the two arc-shaped racks located at both ends of the straight rack, forming a concave shape, as shown in Figures 8(a) and 8(b). Furthermore, as shown in Figure 8(a), the gear in the intermittent mechanism unit 6 in this embodiment can be a common complete circular gear, or a sector gear as shown in Figure 8(b).

[0045] Furthermore, in this embodiment, the guide unit 5 and the intermittent mechanism unit 6 are a group. A total of four groups of guide units 5 and intermittent mechanism units 6 are provided at the bottom of the saw frame. The four groups of guide units 5 and intermittent mechanism units 6 are located at the four corners of the saw frame (i.e., in the front, back, left, and right directions). The central axis of the four swing bodies 52 is pivotally connected to the lower part of the saw frame 4. When the saw frame 4 moves, it can drive the four swing bodies 52 to move together. The four swing bodies 52 then drive the guide units 5 to move, and the four guide units 5 then drive the four intermittent mechanism units 6 to move.

[0046] Furthermore, in this embodiment, the gear and rack of the intermittent mechanism unit 6 can be mounted face-to-face (recessed type), such as... Figure 6 As shown, the two racks of the two intermittent mechanism units 6 on the left are higher on the left and lower on the right; the two racks of the two intermittent mechanism units 6 on the right are lower on the left and higher on the right. That is, in the two sets of guide units and intermittent mechanism units at the front, the two racks of the intermittent mechanism units are installed face to face, forming a concave shape as a whole; in the two sets of guide units and intermittent mechanism units at the rear, the two racks of the intermittent mechanism units are also installed face to face, forming a concave shape as a whole.

[0047] Furthermore, in this embodiment, the gear and rack of the intermittent mechanism unit 6 can also be installed back-to-back (convex upward type), such as... Figure 7As shown, the two racks of the two intermittent mechanism units 6 on the left are lower on the left and higher on the right; the two racks of the two intermittent mechanism units 6 on the right are higher on the left and lower on the right. That is, in the two sets of guide units and intermittent mechanism units at the front, the two racks of the intermittent mechanism units are installed back to back, forming an upward convex shape; in the two sets of guide units and intermittent mechanism units at the rear, the two racks of the intermittent mechanism units are also installed face to face, forming an upward convex shape.

[0048] Furthermore, the device disclosed in this embodiment that can intermittently saw hard materials also includes a lifting control device 8. The lifting device 8 is driven by a motor and multi-stage gears, and finally acts on the lead screw on the block car to drive the block material to move upward for cutting.

[0049] Furthermore, based on the aforementioned device for intermittent sawing of hard materials, this embodiment also provides a processing method for intermittent sawing of hard materials. This method is mainly based on the processing method when racks are installed face-to-face:

[0050] When the crank connecting rod drives the saw frame to move to the right, the arc-shaped rack of the intermittent mechanism on the right side causes the right end of the saw frame to move upward, forming a state of left low and right high. During the movement, the saw blade teeth cut the material in sequence.

[0051] When the crank connecting rod drives the saw frame to move to the left, the arc-shaped rack of the intermittent mechanism on the left side causes the left end of the saw frame to move upward, forming a left-high-right-low state. The saw blade teeth cut the material sequentially along the arc-shaped rack. The installation of the intermittent mechanism alleviates the problem of bidirectional force on the saw teeth during sawing in previous technologies, which is conducive to heat dissipation of the saw teeth. At the same time, the saw tooth debris that falls off can be removed in time, which reduces the likelihood of the saw blade jamming and reduces the wear between the saw teeth and the material, thereby significantly reducing energy consumption and achieving the goal of energy saving.

[0052] Furthermore, based on the aforementioned device for intermittent sawing of hard materials, this embodiment also provides a processing method for intermittent sawing of hard materials. This method is mainly based on the processing method when racks are installed back-to-back:

[0053] When the motion unit drives the saw frame to the right, the arc-shaped rack of the intermittent mechanism on the left causes the left end of the saw frame to move upward, creating a left-low, right-high configuration. During this movement, the saw blade teeth sequentially cut the material. When the motion unit drives the saw frame to the left, the arc-shaped rack of the intermittent mechanism on the right causes the right end of the saw frame to move upward, creating a left-high, right-low configuration. The saw blade teeth sequentially cut the material along the arc-shaped rack. The intermittent mechanism alleviates the problem of bidirectional force on the saw teeth during sawing in previous technologies, facilitates heat dissipation of the saw teeth, and allows for timely removal of saw tooth debris, reducing the likelihood of jamming and wear between the saw teeth and the material. This significantly reduces energy consumption, achieving the goal of energy conservation.

[0054] Furthermore, based on the aforementioned device for intermittent sawing of hard materials, this embodiment also provides a processing method for intermittent sawing of hard materials. This method is mainly based on the rack shown in Figures 8(a) and 8(b), and the processing method is as follows:

[0055] When the motion unit drives the saw frame to the right, the arc-shaped racks of the intermittent mechanisms on both sides cause the left end of the saw frame to move upward, creating a left-low, right-high configuration. During this movement, the saw blade teeth sequentially cut the material. When the motion unit drives the saw frame to the left, the arc-shaped racks of the intermittent mechanisms on both sides cause the right end of the saw frame to move upward, creating a left-high, right-low configuration. The saw blade teeth sequentially cut the material along the arc-shaped racks. The installation of the intermittent mechanisms alleviates the problem of bidirectional force on the saw teeth during sawing in previous technologies, facilitates heat dissipation of the saw teeth, and allows for timely removal of saw tooth debris, reducing the likelihood of jamming and wear between the saw teeth and the processed material. This significantly reduces energy consumption, achieving the goal of energy conservation.

[0056] With the above-described structure, the device for intermittent sawing of hard materials according to the present invention has the following beneficial effects: Because the intermittent mechanism drives the saw frame unit to sequentially saw the material, it alleviates the problem of bidirectional force during sawing in previous technologies, facilitates heat dissipation of the saw teeth, and allows for timely removal of saw tooth debris, reducing the likelihood of jamming and wear between the saw teeth and the material, thereby significantly reducing energy consumption and achieving energy conservation. Furthermore, by achieving intermittent sawing of diamond teeth, the device has a simple structure, stable operation, and prevents diamond particles from falling off, improving sawing strength and service life, reducing the number of diamond teeth required, and greatly lowering production costs.

[0057] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A device for intermittently sawing hard material blocks, comprising a motion unit, a guiding unit, an intermittent mechanism unit, and a frame unit, characterized in that: The motion unit is connected to the saw frame and drives the saw frame to reciprocate relative to the material block. The guide unit includes a swing body, an upper connecting rod, a lower connecting rod, and a central shaft of the swing body; one end of the central shaft of the swing body is pivotally connected to the lower part of the saw frame, and the other end is hinged to the swing body; one end of the swing body is connected to the lower end of the upper connecting rod, and the other end is connected to the upper end of the lower connecting rod; the lower end of the lower connecting rod is hinged to the frame. When the saw frame moves to the left, the central axis of the swing body also moves to the left, causing the upper connecting rod to swing to the left, which in turn causes the gear to move to the right along the movable rack; when the saw frame moves to the right, the central axis of the swing body also moves to the right, causing the upper connecting rod to swing to the right, which in turn causes the gear to move to the left along the movable rack. The intermittent mechanism unit includes a swing arm, a gear, a movable rack, and a rack positioning plate; the swing arm and the upper connecting rod are connected by a coupling and operate synchronously; the swing arm drives the gear to move along the movable rack, which includes a straight rack section and an arc rack section; the movable rack is fixed on the frame unit. The guide unit and the intermittent mechanism unit are grouped together, and there are a total of four groups. The four groups of guide units and intermittent mechanism units are located in the front, back, left and right directions of the saw frame, respectively. In the two sets of guide units and intermittent mechanism units at the front, the two movable racks of the intermittent mechanism unit are installed face-to-face, forming a concave shape as a whole; in the two sets of guide units and intermittent mechanism units at the rear, the two movable racks of the intermittent mechanism unit are also installed face-to-face, forming a concave shape as a whole.

2. The device for intermittent sawing of hard material blocks according to claim 1, characterized in that, The gear mentioned is a sector gear or a spur gear.

3. The apparatus for intermittent sawing of hard material blocks according to claim 1, characterized in that, It also includes a lifting control device, which is driven by a motor and multi-stage gears, and finally acts on the lead screw on the block car to drive the hard material block to move upward for cutting.

4. The device for intermittent sawing of hard material blocks according to claim 1, characterized in that, The motion unit includes a flywheel, a main shaft, and a crank connecting rod; the center of the flywheel is connected to the main shaft, which is driven to rotate by a drive device; the crank connecting rod is eccentrically connected to the flywheel, and the crank connecting rod is connected to the saw frame.

5. A processing method for intermittent sawing of hard materials, characterized in that, An apparatus for intermittent sawing of hard material blocks as described in any one of claims 1-4, comprising: When the motion unit drives the saw frame to move to the right, the arc-shaped rack of the intermittent mechanism unit on the right side causes the right end of the saw frame to move upward, forming a state of left-low and right-high. During the movement, the saw blade teeth cut the material sequentially. When the motion unit drives the saw frame to move to the left, the arc-shaped rack of the intermittent mechanism unit on the left side causes the left end of the saw frame to move upward, forming a state of left-high and right-low. The saw blade teeth cut the material sequentially along the arc-shaped rack.

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