Precise cutting device for LVL

Abstract

The utility model discloses an accurate cutting device for LVL, which comprises a cutting table, the cutting table is provided with an n-shaped cutting frame, and the n-shaped cutting frame is fixedly connected with a cutting blade; the cutting table is provided with a threaded rod and a frame plate table, the two ends of the threaded rod are each provided with a fixed bearing, a plate transferring device is arranged below the frame plate table, an inner threaded through hole is formed in the center of the plate transferring device, the cutting table is further provided with a supporting side plate and a low-speed motor, and sliding wings are arranged on the two sides of the frame plate table. And an output rotating shaft of the low-speed motor is fixedly connected with one end of the threaded rod. According to the design, the low-speed motor drives the threaded rod to rotate, so that the plate transferring device is pushed towards the cutting blade along with the threads, the LVL is accurately cut, the load of the cutting blade is reduced, deformation caused by too high heating temperature of the cutting blade is effectively avoided, and the phenomena of burrs on a shearing surface or layering of the LVL are avoided.

Description

Technical Field

[0001] This utility model relates to the field of artificial board processing equipment, and in particular to a device for precise cutting of LVL. Background Technology

[0002] In the production and processing of laminated veneer lumber (LVL), the finished LVL needs to be cut before it can be sold on the market. However, in existing technologies, after cutting, LVL often exhibits burrs or delamination on the cut surface. This is because the cutting blade easily overheats and deforms during high-speed cutting, and the material does not have time to release the stress, resulting in tilted cuts or dimensional deviations. Simultaneously, burrs are present at the cut, affecting the appearance of the LVL product. If manual feeding of the board into the cutting equipment is chosen, the unstable human operation, with inconsistent speeds, can also cause cutting path deviations. These cuts usually require secondary grinding to achieve the desired smooth cut, wasting manpower and resources and limiting the production rate of LVL. Utility Model Content

[0003] This invention addresses the technical problem that burrs or delamination of LVL boards easily occur on the cut surface during LVL veneer cutting, thus affecting product quality, by providing a device for precise LVL cutting.

[0004] To solve the above-mentioned technical problems, this utility model provides a device for precise cutting of LVL, including a cutting table, which is rectangular and has four supporting legs below it. The four supporting legs are respectively located below the four corners of the cutting table. A "gate"-shaped cutting frame is provided on the cutting table, and a cutting blade is fixedly connected to the "gate"-shaped cutting frame.

[0005] The cutting table is equipped with a threaded rod and a support plate. Each end of the threaded rod is provided with a fixed bearing. The outer ring of each fixed bearing is fixedly connected to the cutting table. A plate-passing device is provided below the support plate. The plate-passing device is fixedly connected to the bottom of the support plate. The center of the plate-passing device is provided with an internal threaded through hole. The thread in the internal threaded through hole matches the external thread of the threaded rod to ensure that the threaded rod is fixedly connected to the inner ring of the fixed bearing after passing through the plate-passing device.

[0006] The cutting table is also equipped with a support side plate and a low-speed motor. There are two support side plates, which are respectively set on both sides of the plate holder. Each support side plate has a first groove on the top inner side. The plate holder has sliding wings on both sides. The sliding wings match the size of the first groove to ensure that the plate holder can slide on the two support side plates. The low-speed motor is fixedly connected to the cutting table, and the output shaft of the low-speed motor is fixedly connected to one end of the threaded rod.

[0007] Preferably, in the above technical solution, each side of the shelf platform is provided with a shelf protrusion, and each shelf protrusion is provided with at least two hanging ears and Z-shaped fixing plates on its outer side, and the number of Z-shaped fixing plates corresponds to the number of hanging ears.

[0008] Preferably, in the above technical solution, a wing bolt is provided above the Z-shaped fixing plate clip, and a second threaded fixing hole is provided in the center of each of the hanging ears. The Z-shaped fixing plate clip is provided with a second through hole at the position corresponding to the hanging ear. The second threaded fixing hole is provided with a thread that matches the wing bolt, and the second through hole is provided with a thread that matches the wing bolt, so as to ensure that the wing bolt is threadedly connected to the hanging ear after the Z-shaped fixing plate clip is unscrewed.

[0009] Preferably, in the above technical solution, each side of the "gate"-shaped cutting frame crossbar is provided with a movable groove, and each movable groove is provided with a row of evenly distributed first threaded fixing holes along the length direction, and the cutting blade is provided with a cutting blade fixing device on both sides.

[0010] Preferably, in the above technical solution, the top of the cutting disc fixing device is provided with a protruding clamping part, the size of the protruding clamping part is matched with the size of the movable groove, so as to ensure that the cutting disc fixing device can move horizontally on the "door" shaped cutting frame.

[0011] Preferably, in the above technical solution, a first through hole is provided in the center of the protruding clamping part, and a knob bolt is provided on each side of the cutting disc fixing device. The thread in the first threaded fixing hole matches the external thread of the knob bolt to ensure that the knob bolt is threadedly connected to the first threaded fixing hole after passing through the first through hole.

[0012] Preferably, in the above technical solution, a row of rolling column assemblies is provided on the side wall and bottom of the first groove, and the number of rolling column assemblies in each row is at least 8, and they are evenly distributed in the first groove. The sliding wing is provided with a rolling groove at the position corresponding to each row of rolling column assemblies, so that the sliding wing can slide smoothly on the rolling column assemblies.

[0013] Preferably, in the above technical solution, the rolling column assembly includes a second groove, a connecting shaft, and a rolling column. The second groove is respectively disposed in the center of the side wall and the bottom of the first groove. Each second groove is provided with a connecting shaft, which is fixedly connected to the inner wall of the second groove. The rolling column is fitted on the connecting shaft to ensure that the rolling column can rotate around the connecting shaft.

[0014] Compared with the prior art, the present invention has the following advantages: by driving the threaded rod to rotate by a low-speed motor, the plate holder and the plate delivery device are pushed together towards the cutting blade along with the thread, so that the LVL is cut at a stable and relatively slow plate delivery rate, reducing the load on the cutting blade, avoiding the deformation caused by excessive heat of the cutting blade, and avoiding the phenomenon of burrs or delamination of the LVL plate on the shearing surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a device for precise cutting of LVL according to the present invention;

[0016] Figure 2 This is a side view of the cutting table of a device for precise cutting of LVL according to the present invention;

[0017] Figure 3 This is a schematic diagram showing the connection between the "door"-shaped cutting frame and the cutting disc fixing device in the cutting table of a device for precise LVL cutting according to this utility model;

[0018] Figure 4 for Figure 2 Enlarged view of the connection between the supporting side plate and the frame platform;

[0019] Figure 5 This is a schematic diagram of the rolling column assembly in the cutting table of a device for precise LVL cutting according to this utility model.

[0020] Explanation of key figure labels:

[0021] 1-Cutting table, 2-"Gate" shaped cutting frame, 3-Cutting disc fixing device, 4-Low speed motor, 5-Threaded rod, 6-Shelf platform, 11-Support leg, 12-Fixed bearing, 13-Support side plate, 14-Rolling column assembly, 21-Modible groove, 22-First threaded fixing hole, 31-Cutting disc, 32-Knob bolt, 33-Protruding clamping part, 35-First through hole, 61-Plate delivery device, 62-Z-type fixing plate clamp, 63-Wing bolt, 64-Second threaded fixing hole, 65-Second through hole, 66-Sliding wing, 67-Shelf protrusion, 68-Hanging ear, 69-Internal threaded through hole, 131-First groove, 141-Second groove, 142-Connecting shaft, 143-Rolling column, 661-Rolling groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-4As shown, this utility model discloses a device for precise cutting of LVL (Low-Level Laser). The device includes a rectangular cutting table 1 with four supporting legs 11 positioned below its four corners. A "gate"-shaped cutting frame 2 is mounted on the cutting table 1, with a cutting disc 31 fixedly connected to it. The cutting table 1 also includes a threaded rod 5 and a support plate 6. Each end of the threaded rod 5 has a fixed bearing 12, the outer ring of which is fixedly connected to the cutting table 1. A plate-passing device 61 is located below the support plate 6 and is fixedly connected to its bottom. The plate-passing device 61 has a central internal threaded through hole 69, the thread of which matches the external thread of the threaded rod 5, ensuring that the threaded rod 5 is fixedly connected to the inner ring of the fixed bearing 12 after passing through the plate-passing device 61. The cutting table 1 is also equipped with support side plates 13 and a low-speed motor 4. There are two support side plates 13, which are respectively arranged on both sides of the mounting plate 6. Each support side plate 13 has a first groove 131 on the inner side of its top. The mounting plate 6 has sliding wings 66 on both sides. The sliding wings 66 are matched with the size of the first groove 131 to ensure that the mounting plate 6 can slide on the two support side plates 13. The low-speed motor 4 is fixedly connected to the cutting table 1, and the output shaft of the low-speed motor 4 is fixedly connected to one end of the threaded rod 5. Each side of the mounting plate 6 is provided with a mounting plate protrusion 67. Each mounting plate protrusion 67 has at least two hanging ears 68 and Z-shaped fixing plates 62 on its outer side. The number of Z-shaped fixing plates 62 corresponds to the number of hanging ears 68. Above the Z-shaped fixing plate 62, a wing bolt 63 is also provided. Each of the hanging ears 68 has a second threaded fixing hole 64 in its center. The Z-shaped fixing plate 62 has a second through hole 65 at a position corresponding to the hanging ear 68. The second threaded fixing hole 64 has a thread matching the wing bolt 63, and the second through hole 65 has a thread matching the wing bolt 63, ensuring that the wing bolt 63 is threadedly connected to the hanging ear 68 after the Z-shaped fixing plate 62 is unscrewed. During operation, the LVL with cutting tool is placed on the shelf 6, then the Z-shaped fixing plate 62 is rotated to cover the upper surface of the LVL, and then the wing bolt 63 is tightened to fix the LVL on the shelf 6, preventing displacement of the LVL on the shelf 6 during cutting and affecting the cutting quality. Driven by the low-speed motor 4, the threaded rod 5 rotates, and the internal thread of the plate-passing device 61 under the support plate 6 engages with the external thread of the threaded rod 5, pushing the LVL on the support plate 6 towards the cutting disc 31 at a relatively slow, fixed rate for cutting. After cutting, the low-speed motor 4 reverses, driving the threaded rod 5 to rotate in the opposite direction for the next precise cut.

[0024] In this embodiment, as Figures 1-3 As shown, each side of the crossbar of the "gate"-shaped cutting frame 2 is provided with a movable groove 21. Each movable groove 21 has a row of evenly distributed first threaded fixing holes 22 along its length. Cutting disc fixing devices 3 are provided on both sides of the cutting disc 31. The top of each cutting disc fixing device 3 has a protruding clamping part 33, the size of which matches the size of the movable groove 21 to ensure that the cutting disc fixing device 3 can move horizontally on the "gate"-shaped cutting frame 2. A first through hole 35 is provided in the center of the protruding clamping part 33. A knob bolt 32 is provided on each side of the cutting disc fixing device 3. The thread in the first threaded fixing hole 22 matches the external thread of the knob bolt 32 to ensure that the knob bolt 32 is threadedly connected to the first threaded fixing hole 22 after passing through the first through hole 35. During operation, the specific cutting position can be adjusted by moving the cutting disc fixing device 3. Before cutting, loosen the knob bolt 32 so that the cutting blade fixing device 3 can move freely on the "door"-shaped cutting frame 2. Adjust the cutting blade fixing device 3 to a suitable position, and then tighten the knob bolt 32 to fix it, ensuring that the cutting blade 31 can perform stable cutting.

[0025] In this embodiment, as Figure 1 , 4 As shown in Figure 5, a row of rolling column assemblies 14 is provided on the sidewall and bottom of the first groove 131. Each row of rolling column assemblies 14 contains at least eight sets, evenly distributed within the first groove 131. A rolling groove 661 is provided at the corresponding position of the sliding wing 66 and each row of rolling column assemblies 14, allowing the sliding wing 66 to slide smoothly on the rolling column assembly 14. Each rolling column assembly 14 includes a second groove 141, a connecting shaft 142, and rolling columns 143. The second grooves 141 are respectively located at the center of the sidewall and bottom of the first groove 131. Each second groove 141 contains a connecting shaft 142, which is fixedly connected to the inner wall of the second groove 141. The rolling columns 143 are fitted onto the connecting shafts 142 to ensure that the rolling columns 143 can rotate around the connecting shafts 142. The rolling column assemblies 14 can be adjusted appropriately according to the length of the supporting side plate 13, ensuring that the platform 6 moves in coordination with at least two sets of rolling column assemblies 14. The rolling column assembly 14, mounted on the support side plate 13, cooperates with the second groove 141 on the sliding wing 66. When the platform 6 slides on the support side plate 13, it effectively reduces the friction between the two, reduces wear, and extends the service life of the device. The rolling column assembly 14 can be replaced with other components that can reduce friction, such as ball bearings or wheels.

[0026] The low-speed motor driving the threaded rod of this invention rotates, thereby causing the plate holder and the plate delivery device to move together along the thread towards the cutting blade. This allows the LVL to be cut at a stable and relatively slow plate delivery rate, reducing the load on the cutting blade, effectively preventing the cutting blade from overheating and deforming, and effectively preventing burrs or LVL delamination on the sheared surface. This enables precise cutting of the LVL, avoids secondary grinding of the sheared surface, and improves the production efficiency of LVL.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for precise cutting of LVL, characterized in that: Includes a cutting table (1), which is rectangular and has four supporting legs (11) below it. The four supporting legs (11) are respectively located below the four corners of the cutting table (1). A "door" shaped cutting frame (2) is provided on the cutting table (1), and a cutting blade (31) is fixedly connected to the "door" shaped cutting frame (2). The cutting table (1) is provided with a threaded rod (5) and a support plate (6). Each end of the threaded rod (5) is provided with a fixed bearing (12). The outer ring of each fixed bearing (12) is fixedly connected to the cutting table (1). The support plate (6) is provided with a plate delivery device (61) below it. The plate delivery device (61) is fixedly connected to the bottom of the support plate (6). The center of the plate delivery device (61) is provided with an internal thread through hole (69). The thread in the internal thread through hole (69) matches the external thread of the threaded rod (5) to ensure that the threaded rod (5) is fixedly connected to the inner ring of the fixed bearing (12) after passing through the plate delivery device (61). The cutting table (1) is also provided with a support side plate (13) and a low-speed motor (4). There are two support side plates (13), which are respectively set on both sides of the plate holder (6). Each support side plate (13) has a first groove (131) on the inner side of its top. The plate holder (6) has sliding wings (66) on both sides. The sliding wings (66) match the size of the first groove (131) to ensure that the plate holder (6) can slide on the two support side plates (13). The low-speed motor (4) is fixedly connected to the cutting table (1). The output shaft of the low-speed motor (4) is fixedly connected to one end of the threaded rod (5).

2. The apparatus for precise cutting of LVL according to claim 1, characterized in that: The shelf platform (6) has a shelf protrusion (67) on both sides. Each shelf protrusion (67) has at least two hanging ears (68) and Z-shaped fixing plates (62) on its outer side. The number of Z-shaped fixing plates (62) corresponds to the number of hanging ears (68).

3. The apparatus for precise cutting of LVL according to claim 2, characterized in that: The Z-shaped clamping plate (62) is also provided with a wing bolt (63) above it. Each of the hanging ears (68) is provided with a second threaded fixing hole (64) in the center. The Z-shaped clamping plate (62) is provided with a second through hole (65) at the position corresponding to the hanging ear (68). The second threaded fixing hole (64) is provided with a thread that matches the wing bolt (63). The second through hole (65) is provided with a thread that matches the wing bolt (63) to ensure that the wing bolt (63) is threadedly connected to the hanging ear (68) after the Z-shaped clamping plate (62) is unscrewed.

4. The apparatus for precise cutting of LVL according to claim 1, characterized in that: The "gate" shaped cutting frame (2) has a movable groove (21) on both sides of the crossbar. Each movable groove (21) has a row of evenly distributed first threaded fixing holes (22) along the length direction. The cutting blade (31) has a cutting blade fixing device (3) on both sides.

5. The apparatus for precise cutting of LVL according to claim 4, characterized in that: The top of the cutting disc fixing device (3) is provided with a protruding clamping part (33), the size of which matches the size of the movable groove (21) to ensure that the cutting disc fixing device (3) can move horizontally on the "door" type cutting frame (2).

6. The apparatus for precise cutting of LVL according to claim 5, characterized in that: The protruding clamping part (33) has a first through hole (35) in the center, and each side of the cutting disc fixing device (3) has a knob bolt (32). The thread in the first thread fixing hole (22) matches the external thread of the knob bolt (32) to ensure that the knob bolt (32) is threadedly connected to the first thread fixing hole (22) after passing through the first through hole (35).

7. The apparatus for precise cutting of LVL according to claim 1, characterized in that: The first groove (131) has a row of rolling column assemblies (14) on its sidewall and bottom. Each row of rolling column assemblies (14) has at least 8 sets and is evenly distributed in the first groove (131). The sliding wing (66) is provided with a rolling groove (661) at the position corresponding to each row of rolling column assemblies (14) so ​​that the sliding wing (66) can slide smoothly on the rolling column assembly (14).

8. The apparatus for precise cutting of LVL according to claim 7, characterized in that: The rolling column assembly (14) includes a second groove (141), a connecting shaft (142), and a rolling column (143). The second groove (141) is respectively disposed in the center of the side wall and the bottom of the first groove (131). Each second groove (141) is provided with a connecting shaft (142). The connecting shaft (142) is fixedly connected to the inner wall of the second groove (141). The rolling column (143) is fitted on the connecting shaft (142) to ensure that the rolling column (143) can rotate around the connecting shaft (142) as an axis.

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