Adjustable double-saw-blade trimming saw

Abstract

The utility model discloses an adjustable double-saw-blade trimming saw which comprises a machine tool base, a working platform with a trimming area is arranged on the machine tool base, the top of the trimming area is sealed by an upper cover plate which can be opened and closed through a hinge, and a feeding system, a cutting system and a non-return system which work cooperatively are arranged in the trimming area. A feeding system, a cutting system and a non-return system are arranged in the trimming area. A feeding roller set of the feeding system is matched with a pressing roller, and automatic feeding is achieved. The cutting system is used for mounting, fixing and adjusting a saw blade through a saw blade shaft and is matched with a saw width adjusting mechanism driven by a sliding bottom plate and a sliding plate chain to accurately adjust the saw width; and the double non-return shafts and the non-return plates of the non-return system ensure that the timbers are stably conveyed in one direction. According to the trimming saw, synchronous trimming of the two sides of timber can be achieved, compared with a traditional single-side mode, efficiency is remarkably improved, the trimming saw is suitable for timber of various specifications by means of saw width adjusting and thickness self-adaption devices, transmission is stable, and an efficient and high-precision solution is provided for timber processing.

Description

Technical Field

[0001] This utility model relates to the technical field of woodworking equipment, specifically to an adjustable double-blade trimming saw. Background Technology

[0002] In the furniture manufacturing industry, wood trimming saws are core equipment for precisely processing the sides of strip boards. With the increasing demands for automation and high-precision processing in the industry, existing automatic and machine tool-type trimming saws have revealed significant technical shortcomings. First, most trimming saws only support single-sided trimming, requiring manual adjustment and flipping of the board before processing the other side, which is cumbersome. Simultaneously, the saw width needs manual control, making it difficult to guarantee processing accuracy and efficiency. Second, existing equipment lacks sufficient automation, making it difficult to ensure uniform and stable speed, posing safety hazards and affecting the consistency of cutting accuracy, thus failing to meet the needs of large-scale production. Furthermore, uneven wood texture (such as knots and density differences), board thickness variations, and cutting vibrations can easily cause equipment shaking during operation, accelerating saw blade wear, shortening equipment lifespan, and resulting in poor operational stability. Therefore, there is an urgent need to develop a trimming saw with a high degree of automation, strong adaptability to board thickness, and diverse functions to improve furniture production quality and efficiency. Utility Model Content

[0003] This invention provides an adjustable double-blade trimming saw, which can simultaneously trim both sides of the wood, significantly improving efficiency compared to the traditional single-blade method. The saw width adjustment and adaptive thickness device are suitable for various wood specifications, offering strong versatility. This invention also features strong transmission stability, enabling automated feeding and providing a highly efficient, stable, and high-precision solution for wood processing.

[0004] An adjustable double-blade trimming saw includes a machine tool base, characterized in that: the machine tool base is provided with a working platform with a trimming area, the top of the trimming area is closed by an upper cover plate that can be opened and closed by a hinge, and the trimming area is provided with a feed system, a cutting system and a backstop system that work together.

[0005] The feeding system is used to realize the automatic conveying and pressing of materials. It includes: a feeding roller group installed in the lower area of ​​the trimming area and a pressing roller located above the feeding roller group. The feeding roller group is driven by the power unit of the feeding system. The roller shaft of the pressing roller is elastically connected to both sides of the trimming area through left and right side plates and pressing roller tension springs to form an adaptive pressing structure.

[0006] The cutting system includes a cutting mechanism and a saw width adjustment mechanism. The cutting mechanism includes a saw blade shaft, which is mounted in the trimming area via a bearing seat. One end of the saw blade shaft is connected to the power mechanism of the cutting system. The saw blade shaft is equipped with a fixed saw blade mounted via a fixed bearing and an adjustable saw blade mounted via an axially movable adjustable bearing. The saw width adjustment mechanism includes a sliding base plate and a drive mechanism. The sliding base plate is mounted on a crossbeam slide rail via a slider. One end of the sliding base plate is connected to the adjustable bearing, and the other end is equipped with a pointer indicating the adjustment position. The drive mechanism adopts a chain and sprocket transmission system, which drives the sliding base plate to linearly displace through a rigid connection structure, thereby achieving manual and precise adjustment of the saw width.

[0007] The anti-reverse system adopts a dual-axis linkage adjustment structure, including: a first anti-reverse shaft, located in the feeding direction of the trimming area, with a rotatable anti-reverse plate with anti-reverse spacers connected in series on it; a second anti-reverse shaft, arranged parallel to the first anti-reverse shaft at an angle rear, connected to the wall plate through an arc groove to form an angle adjustment pair; the two shafts are linked by the anti-reverse adjustment plate, and an operating handle is provided at the end of the adjustment plate, forming a one-way anti-reverse and angle-adjustable anti-backward structure.

[0008] Preferably, the adjusting bearing of this technical solution includes a bearing sleeve. The inner ring of the bearing sleeve is fitted onto the saw blade shaft and is circumferentially fixed by a key connection of a guide key. At the same time, the inner ring of the bearing sleeve and the saw blade shaft adopt a clearance fit or a transition fit, so that the adjusting saw blade bearing has axial freedom. The adjusting saw blade is mounted on a flange connected to the outer ring of the adjusting bearing. A bearing housing is installed on the adjusting bearing. The bearing housing and the outer ring of the adjusting saw blade bearing are clearance fitted. A connecting lug is provided on the outer side of the bearing housing. The sliding base plate is connected to the adjusting bearing via the connecting lug.

[0009] Preferably, the anti-reverse plate of this technical solution has a guide inclined side and an anti-reverse short side. The guide inclined side is inclined upwards and towards the feeding direction, and the anti-reverse short side is adjacent to the guide inclined side. When material enters from the feed inlet, the upper surface of the material pushes the guide inclined side, causing the anti-reverse plate to rotate clockwise around the first anti-reverse axis. The opening between the inclined side and the horizontal plane widens, allowing the material to pass smoothly. When the material retreats in the reverse direction, the anti-reverse plate rotates counterclockwise, and the anti-reverse short side adjacent to the guide inclined side abuts against the material, forming a one-way locking structure to prevent the material from moving in the reverse direction.

[0010] Preferably, this technical solution includes pressure rollers at both the inlet and outlet. The inclusion of pressure rollers in both the inlet and outlet directions further ensures smooth material movement.

[0011] Preferably, the feed roller group of this technical solution includes n feed rollers, where n≥2. The feed rollers within the group are arranged parallel to each other in the same plane, and adjacent feed rollers are connected in series via a chain. This technical solution uses a chain series drive, where power is transmitted through the meshing of chain links and sprockets. This ensures a constant speed ratio between adjacent feed rollers, avoiding inconsistent feeding speeds due to slippage. When changes in material thickness or hardness increase the load on a particular feed roller, the rigid transmission of the chain can evenly distribute torque to each roller, reducing the risk of overload on a single roller and maintaining stable system operation.

[0012] Preferably, the working platform of this technical solution is also provided with a power zone, which is located on one side of the trimming zone. The power mechanism of the feeding system, the power mechanism of the cutting system, and the saw width adjustment power mechanism and the cutting power mechanism are provided in the power zone.

[0013] Preferably, the machine tool base of this technical solution is equipped with roller brackets in the feeding and discharging directions, respectively. The roller brackets are equipped with guide rollers to guide the feeding or discharging. One side of the guide bracket at the feeding end is equipped with a ruler to position the wood feeding position. The sliding base plate of the saw width adjustment mechanism is equipped with an infrared marker at one end of the pointer. The infrared marker projects a clear straight line or a specific shape mark on the wood surface through the emitted high-brightness infrared light, providing an intuitive and accurate reference for cutting.

[0014] Preferably, in this technical solution, the outer cover plate of the trimming area is equipped with a material return roller via a roller bracket. When in use, the cover plate is closed. The material return roller on the cover plate allows for easy lifting of the wood to the cover plate position and rolling it back to the outlet when secondary trimming is needed, thus saving effort.

[0015] Preferably, the drive mechanism of the saw width adjustment mechanism of this technical solution includes a skateboard chain, which is installed on the skateboard sprockets on both sides of the trimming area. The sliding base plate is located between the upper and lower chains of the skateboard chain. The positioning hole of the sliding base plate is connected to the pin of the skateboard chain through an interference fit positioning pin, forming a rigid transmission structure in which the chain drives the skateboard to follow. The skateboard sprocket is connected to a hand-cranked gearbox via bearings and couplings. The hand-cranked gearbox is controlled by a saw width adjustment handle. A positioning plate is provided on the rotating shaft connected to the gearbox. The saw width adjustment handle and the positioning plate are provided with matching saw width positioning holes. A positioning shaft is provided in the saw width positioning holes.

[0016] This utility model has the following significant advantages:

[0017] 1. Adjustable bilateral trimming capability: The cutting system adopts a coaxial double saw blade design, with a fixed saw blade positioning reference. The saw blade is adjusted through an axially movable adjusting bearing linked to the saw width adjustment mechanism. A hand-cranked gearbox drives the sliding plate chain, which moves the sliding base plate along the crossbeam slide rail. The saw width is visually indicated by a pointer, and the distance between the two saw blades can be precisely adjusted to achieve simultaneous bilateral trimming of wood of different widths, significantly improving processing efficiency and flexibility.

[0018] 2. Precise feeding control: The feeding roller assembly of the feeding system is driven by a power mechanism to ensure uniform feeding of wood and guarantee uniform cutting; the upper pressure roller is elastically connected to the wall panel through a tension spring, which can adapt to wood of different thicknesses and adjust the clamping force in real time to avoid deviation, improve positioning accuracy and reduce manual operation costs.

[0019] 3. Safe backflow prevention: The backflow prevention system is equipped with a backflow prevention plate. When feeding, the guide bevel guides the backflow prevention plate to open and close automatically. When retracting, the short side of the backflow prevention plate is immediately locked to prevent the material from moving backward. The double backflow prevention shaft, together with the backflow prevention adjustment plate, can quickly release the jammed state through the linkage design of the arc groove and the circular shaft hole, effectively avoiding safety hazards such as saw blade collision damage and material rebound, extending the equipment life and ensuring operational safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of this utility model.

[0022] Figure 3 This is a magnified view of a portion of the trimming area in this utility model.

[0023] Figure 4 This is an enlarged view of the internal structure of the trimming area in this utility model.

[0024] Figure 5 This is an enlarged view of a portion of the saw width adjustment mechanism of this utility model.

[0025] Figure 6 This is an enlarged view of a partial structure of the anti-reverse system of this utility model. Detailed Implementation

[0026] like Figures 1-6 An adjustable double-blade trimming saw is shown, including a machine base 1, on which a working platform 2 is provided. The working platform 2 has four trimming areas enclosed by a front wall plate 2a, a rear wall plate 2b, a left wall plate 2c, and a right wall plate 2d. The top of the trimming area is closed by an upper cover plate 3 that can be opened and closed by a hinge. The front wall plate 2a and the rear wall plate 2b are respectively provided with corresponding feed inlets and discharge outlets. The trimming area is provided with a feeding system, a cutting system, and a backflow prevention system.

[0027] The feeding system includes a feed roller group 4 and a pressure roller 5. The feed roller group 4 is installed on the lower side of the trimming area between the left and right wall panels via a roller shaft, which is connected to the power mechanism A of the feeding system via a transmission mechanism. The pressure roller 5 is located above the feed roller group and is used to assist feeding and prevent material deviation. The two ends of the roller shaft of the pressure roller 5 are rotatably connected to the left side plate 5a and the right side plate 5b, respectively. The left and right side plates are connected to the wall panels on the same side via pressure roller tension springs 5c, forming an adaptive pressing structure. In this embodiment, pressure rollers are set at the inlet and outlet to further ensure the smooth movement of the material. In this embodiment, the feed roller group includes four feed rollers 4a. The feed rollers in the feed roller group are arranged in parallel in the same plane, and adjacent feed rollers are connected in series via a chain.

[0028] The cutting system includes a cutting mechanism and a saw width adjustment mechanism. The cutting mechanism includes a saw blade shaft 6, which is mounted between the left and right wall panels via a bearing seat. One end of the saw blade shaft 6 is connected to the power mechanism B of the cutting system via a transmission mechanism. The saw blade shaft 6 is equipped with a fixed saw blade 7 and an adjustable saw blade 8, which are respectively mounted via a fixed bearing 7a and an axially movable adjustable bearing 8a, to achieve combined cutting of the fixed end and the adjustable end. The saw width adjustment mechanism includes a sliding base plate 9 and a driving mechanism. The sliding base plate is mounted on the crossbeam slide rail 9a via a slider and can move linearly along the crossbeam slide rail 9a. One end of the sliding base plate 9 is connected to the adjustable bearing 8a via a connecting ear plate 10 to control the axial displacement of the adjustable bearing 8a on the saw blade shaft 6. The other end of the sliding base plate 9 is equipped with a pointer 11 indicating the adjustment position. The pointer 11 extends through the sliding groove of the front wall panel 2a to visually indicate the adjustment position.

[0029] The drive mechanism adopts a chain and sprocket transmission system, which drives the sliding base plate to linear displacement through a rigid connection structure, thereby achieving manual and precise adjustment of the saw width. In this embodiment, the drive mechanism includes a skateboard chain 12, which is mounted around the skateboard sprockets 12a on the left and right side panels. The sliding base plate 9 is located between the upper and lower chains of the skateboard chain 12. The positioning hole of the sliding base plate is connected to the skateboard chain pin through an interference fit positioning pin 13, forming a rigid transmission structure in which the chain drives the skateboard to follow. The skateboard sprocket is connected to the hand-cranked gearbox 15 via a bearing and a coupling 14. The hand-cranked gearbox 15 is controlled by the saw width adjustment handle 26. The shaft connecting the saw width adjustment handle 26 and the gearbox is provided with a positioning plate 27. The saw width adjustment handle 26 and the positioning plate 27 are provided with matching saw width positioning holes. The saw width positioning holes are provided with positioning shafts 25, thereby achieving manual adjustment of the saw width.

[0030] like Figure 6The diagram shown is a partial enlarged view of the anti-reverse system. To facilitate observation of the internal structure, the right wall panel structure is hidden. In this embodiment, the anti-reverse system adopts a dual-axis linkage adjustment structure. The first anti-reverse shaft 16 is located in the feeding direction of the trimming area, and a rotatable anti-reverse plate 18 with anti-reverse spacers is connected in series on it. The second anti-reverse shaft 17 is arranged parallel to the first anti-reverse shaft 16 and diagonally behind it to support the anti-reverse plate 18. The first anti-reverse shaft 16 is connected to the left wall panel 2c and the right wall panel 2d via shaft holes. The second anti-reverse shaft 17 is connected to the left and right wall panels via arc grooves 19. One side of the shaft ends of the first and second anti-reverse shafts is simultaneously connected to the anti-reverse adjustment plate 20. The end of the anti-reverse adjustment plate is provided with an anti-reverse handle 21. In this embodiment, the arc groove connects to the wall panel to form an angle adjustment pair. The first anti-reverse shaft 16 and the second anti-reverse shaft 17 are linked through the anti-reverse adjustment plate. The end of the adjustment plate is provided with an operating handle, forming a one-way anti-reverse and angle-adjustable anti-backward structure.

[0031] like Figure 5 As shown, the adjusting bearing in this embodiment has the function of driving the adjusting saw blade to rotate and being able to move axially on the saw blade shaft, which is achieved in the following way: The adjusting bearing 8a includes a bearing sleeve, the inner ring of which is sleeved on the saw blade shaft and is circumferentially fixed by a key connection of a guide key. At the same time, the inner ring of the bearing sleeve and the saw blade shaft adopt a clearance fit or transition fit, so that the adjusting saw blade bearing has axial freedom. The adjusting saw blade 8 is mounted on a flange connected to the outer ring of the adjusting bearing. A bearing housing 8b is installed on the adjusting bearing, and the bearing housing 8b is clearance fitted with the outer ring of the adjusting saw blade 8 bearing. A connecting lug 10 is provided on the outer side of the bearing housing.

[0032] In this embodiment, the anti-reverse plate has a guide inclined side and an anti-reverse short side. The guide inclined side is inclined upwards and towards the feeding direction, and the anti-reverse short side is adjacent to the guide inclined side. When the material enters from the feed inlet, the upper surface of the material pushes the guide inclined side, causing the anti-reverse plate to rotate clockwise around the first anti-reverse axis. The opening between the inclined side and the horizontal plane widens, allowing the material to pass smoothly. When the material retracts in the reverse direction, the anti-reverse plate rotates counterclockwise, and the anti-reverse short side adjacent to the guide inclined side abuts against the material, forming a one-way locking structure to prevent the material from moving in the reverse direction.

[0033] In this embodiment, for ease of operation and aesthetics, the working platform of this technical solution is also provided with a power area, which is located on one side of the trimming area. The power mechanism of the feeding system, the power mechanism of the cutting system, and the saw width adjustment power mechanism and the cutting power mechanism are all located in the power area.

[0034] In this embodiment, roller supports 22 are provided on both the feeding and discharging directions of the machine tool base. Guide rollers 23 are provided on the roller supports to guide the feeding or discharging of the wood. A ruler 24 for positioning the wood feeding position is provided on one side of the guide support at the feeding end. To facilitate easier movement of the wood during secondary trimming, a material return roller 3a is provided on the outside of the upper cover plate 3 of the trimming area via the roller supports.

[0035] The work process is as follows:

[0036] Preparation: First, place the wood on the roller bracket 22 of the machine tool base 1, and smoothly guide it into the work platform 2 using the guiding function of the guide roller 23. Next, make one end of the wood fit tightly against the straightedge 24, and precisely adjust the trimming saw width by shaking the saw width adjustment handle 26 while observing the position of the pointer 11. After completion, insert the positioning shaft 25 for fixation.

[0037] Feeding and Conveying: Start the feed roller group 4, and the wood enters the trimming area from the feed inlet. When the wood travels normally, it smoothly passes through the anti-reverse system and enters the feeding area surrounded by the feed roller group and the pressure roller. At this time, driven by the power of the feed roller group, the wood pushes the pressure roller upward, and at the same time, the pressure roller tension spring plays its role to ensure that the pressure roller 5 always tightly presses the wood, ensuring stable conveying.

[0038] Cutting operation: When the wood approaches the cutting area, the saw blade shaft 6 starts to rotate. With the coordinated operation of the feeding system and the cutting system, the wood continues to move forward until the cutting is completed.

[0039] Material discharge and secondary trimming: After cutting, the wood is smoothly moved out under the guidance of the discharge direction guide roller 23. If secondary trimming is required, the material discharge roller 3a set on the top surface of the upper cover plate 3 can be used to discharge the wood along it. This design effectively saves manpower and time.

Claims

1. An adjustable double-blade trimming saw, comprising a machine tool base, characterized in that: The machine tool base is equipped with a work platform with a trimming area. The top of the trimming area is closed by a cover plate that can be opened and closed by a hinge. The trimming area is equipped with a feed system, a cutting system and a backstop system that work together. The feeding system is used to realize the automatic conveying and pressing of materials. It includes: a feeding roller group installed in the lower area of ​​the trimming area and a pressing roller located above the feeding roller group. The feeding roller group is driven by the power machine of the feeding system. The roller shaft of the pressing roller is elastically connected to both sides of the trimming area through left and right side plates and pressing roller tension springs to form an adaptive pressing structure. The cutting system includes a cutting mechanism and a saw width adjustment mechanism. The cutting mechanism includes a saw blade shaft, which is mounted in the trimming area via a bearing seat. One end of the saw blade shaft is connected to the power mechanism of the cutting system. The saw blade shaft is equipped with a fixed saw blade mounted via a fixed bearing and an adjustable saw blade mounted via an axially movable adjustable bearing. The saw width adjustment mechanism includes a sliding base plate and a drive mechanism. The sliding base plate is mounted on a crossbeam slide rail via a slider. One end of the sliding base plate is connected to the adjustable bearing, and the other end is equipped with a pointer indicating the adjustment position. The drive mechanism adopts a chain and sprocket transmission system, which drives the sliding base plate to linearly displace through a rigid connection structure, thereby achieving manual and precise adjustment of the saw width. The anti-reverse system adopts a dual-axis linkage adjustment structure, including: a first anti-reverse shaft, located in the feeding direction of the trimming area, with a rotatable anti-reverse plate with anti-reverse spacers connected in series on it; a second anti-reverse shaft, arranged parallel to the first anti-reverse shaft at an angle rear, connected to the wall plate through an arc groove to form an angle adjustment pair; the two shafts are linked by the anti-reverse adjustment plate, and an operating handle is provided at the end of the adjustment plate, forming a one-way anti-reverse and angle-adjustable anti-backward structure.

2. The adjustable double-blade trimming saw according to claim 1, characterized in that: The adjusting bearing includes a bearing sleeve. The inner ring of the bearing sleeve is fitted onto the saw blade shaft and is circumferentially fixed by a keyed connection with a guide key. Simultaneously, the inner ring of the bearing sleeve and the saw blade shaft employ a clearance fit or transition fit, allowing the adjusting saw blade bearing to have axial freedom. The adjusting saw blade is mounted on a flange connected to the outer ring of the adjusting bearing. A bearing housing is installed on the adjusting bearing, and the bearing housing has a clearance fit with the outer ring of the adjusting saw blade bearing. A connecting lug is provided on the outer side of the bearing housing, and the sliding base plate is connected to the adjusting bearing via the connecting lug.

3. The adjustable double-blade trimming saw according to claim 1, characterized in that: The anti-reverse plate has a guide inclined side and an anti-reverse short side. The guide inclined side is inclined upward and towards the feeding direction, and the anti-reverse short side is adjacent to the guide inclined side.

4. The adjustable double-blade trimming saw according to claim 1, characterized in that: The feed roller group includes n feed rollers, where n≥2. The feed rollers in the feed roller group are arranged in parallel in the same plane, and two adjacent feed rollers are connected in series by a chain.

5. An adjustable double-blade trimming saw according to claim 1, characterized in that: The work platform is also equipped with a power zone, which is located on one side of the trimming zone. The power mechanism of the feeding system, the power mechanism of the cutting system, and the saw width adjustment power mechanism and the cutting power mechanism are all located in the power zone.

6. The adjustable double-blade trimming saw according to claim 1, characterized in that: The machine tool base is equipped with roller brackets in the feeding and discharging directions, and the roller brackets are equipped with guide rollers to guide the feeding or discharging. A ruler for positioning the feeding position of the wood is provided on one side of the guide bracket at the feeding end, and an infrared marker is provided on one end of the sliding base plate of the saw width adjustment mechanism with a pointer.

7. An adjustable double-blade trimming saw according to claim 1, characterized in that: The outer cover of the trimming area is equipped with a material return roller via a roller bracket.

8. An adjustable double-blade trimming saw according to claim 1, characterized in that: The drive mechanism of the saw width adjustment mechanism includes a skateboard chain, which is installed on the skateboard sprockets on both sides of the trimming area. The sliding base plate is located between the upper and lower chains of the skateboard chain. The positioning hole of the sliding base plate is connected to the pin of the skateboard chain through an interference fit positioning pin, forming a rigid transmission structure in which the chain drives the skateboard to follow. The skateboard sprocket is connected to a hand-cranked gearbox via bearings and couplings. The hand-cranked gearbox is controlled by a saw width adjustment handle. A positioning plate is provided on the rotating shaft connecting the saw width adjustment handle and the gearbox. The saw width adjustment handle and the positioning plate are provided with matching saw width positioning holes, and a positioning shaft is provided in the saw width positioning holes.

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