A CNC double-end saw milling machine and feeding method

Abstract

The present invention relates to the technical field of wood board processing, specifically a CNC double-end saw milling machine and a feeding method. By setting an intermediate support platform, the middle of the wood board is supported during the feeding process of the double-end saw milling machine, thereby preventing the wood board from collapsing toward the middle due to its own weight during processing, thereby improving the overall processing accuracy. At the same time, in the upper pressing material conveying mechanism, separate pressing material servo motors are set on both sides to ensure synchronous feeding with the lower limit conveying mechanism, and the advance or lag feeding mode of the board to be processed can be quickly adjusted based on the processing requirements of the board to be processed. In addition, separate electric lifting structures are additionally provided on both sides of the upper pressing material conveying mechanism, so that the vertical height of the upper pressing material conveying mechanism can be adjusted according to the thickness of the board to be processed during use.

Description

Technical Field

[0001] The invention relates to the technical field of wood board processing, in particular to a numerically controlled double-end sawing and milling machine and a feeding method. Background Art

[0002] In the field of wood board processing, sawing, milling, grinding and polishing at both ends of the board are key processes that affect the dimensional accuracy and surface quality of the product. The existing processing methods are mainly divided into single-end processing and double-end processing based on the processing method.

[0003] Currently, most companies use a single-end, sequential processing method, whereby one end of the board is fixed, the end surface is processed, and then the board is flipped over to process the other end. While this method places low demands on mechanical equipment, it requires frequent manual adjustments to the workpiece position, resulting in low processing efficiency and the risk of accumulated positioning errors. This makes it suitable only for production applications with limited requirements for wood board dimensions.

[0004] In double-end processing, synchronous cutting is achieved through dual-spindle linkage. This processing method is more commonly used in metal material processing. For wooden boards, based on their own characteristics, suspended double-end conveying is adopted for processing wooden boards. On the one hand, due to the material factors of the wooden boards themselves, they will bend or collapse towards the middle under the influence of their own weight in this processing method, resulting in reduced accuracy of synchronous processing on both sides. On the other hand, the existing technology adopts a hydraulic system with a mechanical transmission chain to press the material. Although the wooden boards are pressed and conveyed in the vertical direction, the introduction of sawing, milling, grinding and polishing processes during the processing will cause displacement in the moving direction, which further increases the processing error. Summary of the Invention

[0005] The purpose of the present invention is to provide a numerically controlled double-end saw milling machine and method to address the above-mentioned problems.

[0006] The technical solution adopted by the present invention is as follows: a CNC double-end saw milling machine, comprising a first processing device and a second processing device, the first processing device and the second processing device being arranged opposite to each other, both of which are provided with a working part, and the working part includes a saw milling mechanism, which also includes an intermediate support platform and a lateral adjustment mechanism;

[0007] The intermediate support platform is provided between the first processing device and the second processing device, and is used to support the plate to be processed. The bottom of the intermediate support platform is connected to the lateral adjustment mechanism;

[0008] The first processing device and the second processing device are arranged on a lateral adjustment mechanism, which can adjust the spacing laterally. The first processing device is provided with a first pressing and conveying structure, and the second processing device is provided with a second pressing and conveying structure. The first pressing and conveying structure and the second pressing and conveying structure can make the two ends of the plate to be processed move synchronously.

[0009] Furthermore, the transverse adjustment mechanism includes a first transverse frame and a second transverse frame;

[0010] The first transverse frame and the second transverse frame are arranged in parallel, and the first transverse frame and the second transverse frame are both provided with a ball screw and a slider capable of driving the first processing device and the second processing device to move transversely;

[0011] The front bottom sections of the first processing device and the front bottom sections of the second processing device are arranged on a first transverse frame, and the rear bottom sections of the first processing device and the rear bottom sections of the second processing device are arranged on a second transverse frame.

[0012] Furthermore, the first processing device includes a first frame and a backing plate;

[0013] The first material pressing and conveying structure includes a first upper material pressing and conveying mechanism and a first lower position limiting and conveying mechanism;

[0014] The first upper pressing and conveying mechanism and the first lower limiting and conveying mechanism are both connected to a side of the first frame facing the second processing device, and the first upper pressing and conveying mechanism is located above the first lower limiting and conveying mechanism;

[0015] One end of the plate to be processed can pass through the gap between the first upper material pressing and conveying mechanism and the first lower position limiting and conveying mechanism;

[0016] The support plate is arranged at the feeding end of the first processing device and can be against one end of the plate to be processed.

[0017] Furthermore, the second processing device includes a second frame and a push plate;

[0018] The second material pressing and conveying structure includes a second upper material pressing and conveying mechanism and a second lower position limiting and conveying mechanism;

[0019] The second upper pressing and conveying mechanism and the second lower limiting and conveying mechanism are both connected to a side of the second frame facing the first processing device, and the second upper pressing and conveying mechanism is located above the second lower limiting and conveying mechanism;

[0020] One end of the plate to be processed can pass through the gap between the second upper material pressing and conveying mechanism and the second lower position limiting and conveying mechanism;

[0021] The push plate is arranged at the feeding end of the second processing device, can abut against the other end of the plate to be processed, and can push the plate to be processed toward the first processing device.

[0022] Furthermore, the first upper material pressing and conveying mechanism and the second upper material pressing and conveying mechanism have the same structure and are mirror-imaged and arranged on both sides of the middle support platform;

[0023] The first lower limit conveying mechanism and the second lower limit conveying mechanism have the same structure and are mirror-imaged on both sides of the middle support platform.

[0024] Furthermore, the first upper pressing and conveying mechanism includes a housing and a pressing servo motor, and a pressing belt, a pressing and conveying wheel, a pressing component and a fixing block are arranged in the housing;

[0025] The pressing belt is wrapped around the pressing conveying wheel and can contact the surface of the plate to be processed from above;

[0026] The pressing servo motor is installed outside the housing, and the power output end of the pressing servo motor can drive the pressing conveying wheel to rotate;

[0027] The pressing component can press the pressing belt downward;

[0028] The fixing block is arranged in the inner ring of the pressing belt and is connected to the inner wall of the shell.

[0029] Furthermore, the pressing component includes a fixing rod, a connecting sleeve, a pressing wheel top spring, a pressing wheel shaft sleeve and a pressing wheel;

[0030] The fixing rod is connected to the fixing block;

[0031] The connecting sleeve is arranged at the end of the fixed rod and is limited by bolts;

[0032] One end of the pressing wheel sleeve is connected to the connecting sleeve, and the other end is connected to the pressing wheel;

[0033] One end of the pressing wheel top spring is connected to the pressing wheel shaft sleeve, and the other end is connected to the fixed block;

[0034] The pressing wheel contacts the inner circle of the pressing belt.

[0035] Furthermore, the first lower limit conveying mechanism includes a driven wheel, a limit block, a conveying chain plate, a travel switch and a driving wheel groove;

[0036] A driving wheel is installed in the driving wheel groove, and the driving wheel can rotate under the drive of the driving motor, and the driving wheel groove is close to the discharge end of the first processing device;

[0037] The conveying chain plate surrounds the driven wheel and the driving wheel and can rotate under the drive of the driving wheel;

[0038] The limit block is detachably mounted on the conveying chain plate and moves along with the conveying chain plate. A protrusion is provided on the limit block.

[0039] The travel switch is provided at the feeding end of the first processing device and is used to detect the thickness of the plate to be processed;

[0040] The plate to be processed can be placed on the conveyor chain plate and limited between adjacent limiting blocks.

[0041] The present application provides a feeding method for a CNC double-end saw milling machine, which is implemented based on the above-mentioned CNC double-end saw milling machine and includes the following steps:

[0042] S1. The plate to be processed is placed at the feed end of the first processing device and the second processing device;

[0043] S2. Adjust the push plate so that the plate to be processed rests on the support plate;

[0044] S3. The plate to be processed is restrained between adjacent limit blocks and, as the conveyor chain moves toward the working section, a travel switch controls a ruler to detect the thickness of the plate to be processed.

[0045] S4. The first pressing and conveying structure and the second pressing and conveying structure respectively press and convey the materials to the two ends of the plate to be processed.

[0046] Furthermore, the material pressing and conveying includes advance conveying and delayed conveying;

[0047] During the advance conveying, the conveying speed of the pressing belt is greater than the conveying speed of the conveying chain plate, and the plate to be processed abuts against the protruding portion of the front limit block along the conveying direction of the conveying chain plate;

[0048] During the delayed conveying, the conveying speed of the pressing belt is lower than the conveying speed of the conveying chain plate, and the plate to be processed abuts against the protruding portion of the rear limit block along the conveying direction of the conveying chain plate.

[0049] The beneficial effects of the present invention include at least one of the following:

[0050] 1. By setting up an intermediate support platform, the middle of the wooden board can be supported during the feeding process of the double-end saw milling machine, thereby preventing the wooden board from collapsing towards the middle due to its own weight during processing and improving the overall processing accuracy.

[0051] 2. By respectively arranging a material pressing and conveying structure on the first processing device and the second processing device, the two sides of the plate to be processed can move synchronously based on the material pressing and conveying method, thereby improving the overall processing accuracy.

[0052] 3. By setting up an upper pressing and conveying mechanism with a pressing belt, a pressing and conveying wheel, a lower pressing component and a pressing servo motor, it can provide a vertical force to the upper surface of the wooden board to be conveyed, so that it can move together, thereby avoiding the asynchronous phenomenon of both ends during sawing, milling and sanding. Separate pressing servo motors are set on both sides to control the pressing and conveying wheels on both sides respectively to ensure synchronous feeding with the lower limit conveying mechanism. This double pressing servo motor can quickly adjust the conveying speed of the pressing belt by changing the speed, so that the feeding mode of the board to be processed can be quickly adjusted based on the processing requirements of the board to be processed.

[0053] 4. By setting up a lower limit conveying mechanism including a driven wheel, a limit block, a conveyor chain plate, a travel switch and a driving wheel groove, the plate to be processed can be restricted between adjacent limit blocks and provided with a horizontal force so that it can move together, thereby avoiding the asynchronous phenomenon of both ends during sawing and milling.

[0054] 5. For wood boards of different thickness and length, two pressing and conveying modes, advance conveying and lagging conveying, are provided to enable better synchronous feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic diagram of the three-dimensional structure of a CNC double-end saw milling machine;

[0056] Figure 2 This is a schematic diagram of the structure of one side of a CNC double-end saw milling machine;

[0057] Figure 3 This is a schematic diagram of the other side structure of a CNC double-end saw milling machine;

[0058] Figure 4 Schematic diagram of the upper material pressing and conveying mechanism and the lower limit conveying mechanism;

[0059] Figure 5 It is a schematic diagram of the structure of the pressing component;

[0060] Figure 6 This is a schematic diagram of the advance conveying structure;

[0061] Figure 7 Schematic diagram of the delayed conveying structure.

[0062] In the picture:

[0063] 1 is the middle support table, 2 is the first processing device, 3 is the second processing device, 4 is the first transverse frame, 5 is the second transverse frame, 6 is the first frame, 7 is the second frame, 8 is the first upper pressing and conveying mechanism, 9 is the second upper pressing and conveying mechanism, 10 is the support plate, 11 is the push plate, 12 is the first lower limit conveying mechanism, 13 is the second lower limit conveying mechanism, 14 is the plate to be processed, 15 is the driving motor, 16 is the driving wheel groove, 17 is the conveying chain plate, 18 is the driven wheel, 19 is the limit block, 21 is the travel switch, 22 is the pressing and conveying wheel, 23 is the pressing belt, 24 is the pressing servo motor, 25 is the pressing component, 26 is the fixing rod, 27 is the connecting sleeve, 28 is the pressing wheel shaft sleeve, 29 is the pressing wheel top spring, 30 is the pressing wheel, 31 is the rear limit block, and 32 is the front limit block. DETAILED DESCRIPTION

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0065] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0066] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0067] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0068] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended only to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0069] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0070] like Figures 1 to 3 As shown, a CNC double-end saw milling machine includes a first processing device 2 and a second processing device 3, which are arranged opposite to each other. The first processing device 2 and the second processing device 3 are both provided with a working part, and the working part includes a saw milling mechanism, which is suitable for processing wooden boards, and also includes an intermediate support table 1 and a lateral adjustment mechanism;

[0071] The intermediate support platform 1 is provided between the first processing device 2 and the second processing device 3 and is used to support the plate 14 to be processed. The bottom of the intermediate support platform 1 is connected to the lateral adjustment mechanism.

[0072] The first processing device 2 and the second processing device 3 are arranged on a lateral adjustment mechanism, which can adjust the spacing laterally. The first processing device 2 is provided with a first pressing and conveying structure, and the second processing device 3 is provided with a second pressing and conveying structure. The first pressing and conveying structure and the second pressing and conveying structure can make the two ends of the plate 14 to be processed move synchronously.

[0073] The purpose of this design is to provide an intermediate support platform to support the center of the wood board during the double-end sawmilling and milling process, thereby preventing the wood board from collapsing towards the center due to its own weight during processing and improving overall processing accuracy. By providing a material pressing and conveying structure on each of the first and second processing devices, the material pressing and conveying method can enable the two sides of the processed board to move synchronously, thereby improving overall processing accuracy.

[0074] At the same time, it should be pointed out that during the feeding process, corresponding auxiliary wheels will be laid on the intermediate support table to reduce the friction between the plate to be processed and the intermediate support table.

[0075] Furthermore, in this embodiment, the transverse adjustment mechanism includes a first transverse frame 4 and a second transverse frame 5;

[0076] The first transverse frame 4 and the second transverse frame 5 are arranged in parallel, and the first transverse frame 4 and the second transverse frame 5 are both provided with a ball screw and a slider capable of driving the first processing device 2 and the second processing device 3 to move transversely;

[0077] The front bottom sections of the first processing device 2 and the front bottom sections of the second processing device 3 are arranged on the first transverse frame 4 , and the rear bottom sections of the first processing device 2 and the rear bottom sections of the second processing device 3 are arranged on the second transverse frame 5 .

[0078] The purpose of such a design is that, by providing the first transverse frame and the second transverse frame, the first processing device and the second processing device can be supported, and the spacing between them can be adjusted according to the width of the plate to be processed.

[0079] It should also be pointed out that in actual use, the intermediate support platform is also set on the first transverse frame and the second transverse frame, so that when the position of the first processing device and the second processing device is adjusted, the position of the intermediate support platform can be adjusted at the same time.

[0080] In this embodiment, the first processing device 2 includes a first frame 6 and a support plate 10;

[0081] The first pressing and conveying structure includes a first upper pressing and conveying mechanism 8 and a first lower limiting and conveying mechanism 12;

[0082] The first upper pressing and conveying mechanism 8 and the first lower limiting conveying mechanism 12 are both connected to the side of the first frame 6 facing the second processing device 3, and the first upper pressing and conveying mechanism 8 is located above the first lower limiting conveying mechanism 12;

[0083] One end of the plate 14 to be processed can pass through the gap between the first upper pressing conveying mechanism 8 and the first lower limiting conveying mechanism 12;

[0084] The support plate 10 is provided at the feeding end of the first processing device 2 and can abut against one end of the plate 14 to be processed.

[0085] Meanwhile, the second processing device 3 includes a second frame 7 and a push plate 11;

[0086] The second pressing and conveying structure includes a second upper pressing and conveying mechanism 9 and a second lower limiting and conveying mechanism 13;

[0087] The second upper pressing and conveying mechanism 9 and the second lower limiting conveying mechanism 13 are both connected to the side of the second frame 7 facing the first processing device 2, and the second upper pressing and conveying mechanism 9 is located above the second lower limiting conveying mechanism 13;

[0088] One end of the plate to be processed 14 can pass through the gap between the second upper pressing conveying mechanism 9 and the second lower limiting conveying mechanism 13;

[0089] The push plate 10 is provided at the feed end of the second processing device 3 , and can abut against the other end of the plate 14 to be processed, and can push the plate 14 to be processed toward the first processing device 2 .

[0090] The purpose of this design is that when processing, the plate to be processed is first placed on the feed end of the first processing device and the second processing device. After ensuring that it is placed horizontally, the push plate is controlled by a motor (the motor is not shown) to push the plate to be processed toward the support plate, and then the first pressing and conveying structure and the second pressing and conveying structure are started. Driven by the synchronous drive motor, the two ends of the plate to be processed move synchronously.

[0091] like Figure 4 As shown, in this embodiment, the first upper pressing and conveying mechanism 8 and the second upper pressing and conveying mechanism 9 have the same structure and are mirror-imaged and arranged on both sides of the middle support platform 1;

[0092] The first lower limit conveying mechanism 12 and the second lower limit conveying mechanism 13 have the same structure and are mirror-imaged on both sides of the middle support platform 1;

[0093] The first upper pressing and conveying mechanism 8 and the second upper pressing and conveying mechanism 9 have the same structure and are mirror-imaged on both sides of the middle support platform 1;

[0094] The first lower limit conveying mechanism 12 and the second lower limit conveying mechanism 13 have the same structure and are mirror-imaged on both sides of the middle support platform 1;

[0095] The first upper pressing and conveying mechanism 8 includes a housing and a pressing servo motor 24, and a pressing belt 23, a pressing and conveying wheel 22, a pressing component 25 and a fixing block are arranged in the housing;

[0096] The pressing belt 23 surrounds the pressing conveying wheel 22 and can contact the surface of the plate 14 to be processed from above;

[0097] The pressing servo motor 24 is installed outside the housing, and the power output end of the pressing servo motor 24 can drive the pressing conveying wheel 22 to rotate;

[0098] The pressing component 25 can press the pressing belt 23 downward;

[0099] The fixing block is arranged in the inner ring of the pressing belt 23 and is connected to the inner wall of the shell.

[0100] Meanwhile, the first lower limit conveying mechanism 12 includes a driven wheel 18, a limit block 19, a conveying chain plate 17, a travel switch 21 and a driving wheel groove 16;

[0101] A driving wheel is installed in the driving wheel groove 16, and the driving wheel can rotate under the drive of the driving motor 15. The driving wheel groove 16 is close to the discharge end of the first processing device 2;

[0102] The conveying chain plate 17 surrounds the driven wheel 18 and the driving wheel and can rotate under the drive of the driving wheel;

[0103] The limit block 19 is detachably mounted on the conveying chain plate 17 and moves along with the conveying chain plate 17. A protrusion is provided on the limit block 19.

[0104] The travel switch 21 is provided at the feeding end of the first processing device 2 and is used to detect the thickness of the plate 14 to be processed;

[0105] The plate 14 to be processed can be placed on the conveyor chain plate 17 and limited between adjacent limiting blocks 19 .

[0106] The purpose of this design is that in the upper pressing and conveying mechanism part, the pressing and conveying wheel rotates under the action of the pressing servo motor, so that the pressing belt can drive the plate to be processed from the feed end to the discharge end of the CNC double-end sawing and milling machine.

[0107] At the same time, the lower pressing component exerts a downward force on the pressing belt, so that it can fit tightly with the upper surface of the board to be processed. In this way, by setting up an upper pressing conveying mechanism with a pressing belt, a pressing conveying wheel, a lower pressing component and a pressing servo motor, it can provide a vertical force to the upper surface of the wooden board to be conveyed, so that it can move together, thereby avoiding the asynchronous phenomenon of the two ends during sawing, milling and sanding.

[0108] It should also be pointed out that, as can be seen from the diagram, in the upper pressing and conveying mechanism, separate pressing servo motors are set on both sides to control the pressing and conveying wheels on both sides respectively, to ensure synchronous feeding with the lower limit conveying mechanism, and this dual pressing servo motor can quickly adjust the conveying speed of the pressing belt by changing the speed, so that the advance or lag feeding mode of the plate to be processed can be quickly adjusted based on the processing requirements of the plate to be processed.

[0109] In the lower limit conveying mechanism part, the first processing device and the second processing device are controlled by the same drive motor, so that the conveying chain plates on both sides have the same conveying speed. Then, the plate to be processed can be restricted between adjacent limit blocks and horizontal force is provided to it so that it can move together, thereby avoiding the asynchronous phenomenon of the two ends during sawing and milling processing.

[0110] The travel switches are usually set in groups of three with photoelectric switches. The front and rear travel switches are used to realize the swinging action of the ruler. The front travel switch controls the extension of the ruler, and the rear travel switch controls the retraction of the ruler. The middle travel switch and photoelectric switch are used to detect the signal that the material enters the equipment.

[0111] At the same time, if Figure 5 As shown, in this embodiment, the pressing component 25 includes a fixing rod 26, a connecting sleeve 27, a pressing wheel top spring 29, a pressing wheel shaft sleeve 28 and a pressing wheel 30;

[0112] The fixing rod 26 is connected to the fixing block;

[0113] The connecting sleeve 27 is provided at the end of the fixing rod 26 and is limited by bolts;

[0114] One end of the pressing wheel sleeve 28 is connected to the connecting sleeve 27, and the other end is connected to the pressing wheel 30;

[0115] One end of the pressure wheel top spring 29 is connected to the pressure wheel shaft sleeve 28, and the other end is connected to the fixed block;

[0116] The pressing wheel 30 contacts the inner circle of the pressing belt 23 .

[0117] The purpose of this design is that before batch feeding processing, the on-site staff adjusts the position of the connecting sleeve based on the thickness of the plate to be processed, thereby changing the position of the pressure wheel and the pressure wheel top spring. When the plate to be processed enters the gap between the upper pressure conveying mechanism and the lower limit conveying mechanism, the pressure wheel top spring can act downward on the pressure wheel shaft sleeve, thereby driving the pressure wheel to move downward.

[0118] It should be pointed out that when adjusting the overall height, an electric lifting device in the vertical direction can also be used, so that the height of the upper pressing material conveying mechanism can be adjusted as a whole in the vertical direction. This adjustment method can be achieved by additionally providing a separate electric lifting structure on both sides of the upper pressing material conveying mechanism, so that the vertical height of the upper pressing material conveying mechanism can be adjusted according to the thickness of the plate to be processed during use, such as fixing the two upper pressing material conveying mechanisms on the first frame and the second frame respectively through lifting parts, and then making them rise and fall synchronously on the two frames through the electric lifting structure.

[0119] In this embodiment, based on a CNC double-end saw milling machine, a feeding method for a CNC double-end saw milling machine is provided, comprising the following steps:

[0120] S1. The plate to be processed 14 is placed at the feeding end of the first processing device 2 and the second processing device 3;

[0121] S2. Adjust the push plate 11 so that the plate 14 to be processed rests on the support plate 10;

[0122] S3. The plate to be processed 14 is limited between adjacent limit blocks 19, and as the conveyor chain plate 17 moves toward the working portion, the travel switch 21 controls the ruler to detect the thickness of the plate to be processed 14;

[0123] S4. The first pressing and conveying structure and the second pressing and conveying structure respectively press and convey the material to be processed at both ends of the plate 14.

[0124] At the same time, pressure conveying includes advance conveying and lagging conveying;

[0125] During the advance conveying, the conveying speed of the pressing belt 23 is greater than the conveying speed of the conveying chain plate 17, and the plate to be processed 14 abuts against the protruding portion of the front limit block 19 along the conveying direction of the conveying chain plate 17;

[0126] During the delayed conveying, the conveying speed of the pressing belt 23 is lower than the conveying speed of the conveying chain plate 17 , and the plate to be processed 14 abuts against the protruding portion of the rear limit block 19 along the conveying direction of the conveying chain plate 17 .

[0127] The purpose of this design is to provide two pressing and conveying modes, namely, advance conveying and lagging conveying, for wood boards of different thicknesses and lengths, so that they can be fed synchronously better.

[0128] like Figure 6 As shown, for better description, in this embodiment, the limit block 19 located in front of the plate to be processed 14 adopts the description of the front limit block 32, providing an advanced conveying structure. In this state, the conveying speed of the upper pressing belt is greater than the conveying speed of the lower conveying chain plate, so that the plate to be processed gradually moves toward the front limit block 32, and finally contacts and limits it, so that there will be no shaking along the conveying direction during processing, and it is suitable for processing solid wood plates, plywood, and finger-jointed plates with longer plates.

[0129] And as Figure 7As shown, for better description, in this embodiment, the limit block 19 located behind the plate to be processed 14 adopts the description of the rear limit block 31, providing a delayed conveying structure. In this state, the conveying speed of the upper pressing belt is less than the conveying speed of the lower conveying chain plate, so that the plate to be processed gradually moves toward the rear limit block 31, and finally contacts and limits it, so that there will be no shaking along the conveying direction during processing, and it is suitable for processing of solid wood plates, plywood, and finger-jointed plates with shorter plates.

[0130] It should be pointed out that the rear limit block 31 and the front limit block 32 are relative terms, and are divided according to the conveying direction. The front limit block 32 is located at the front of the conveying direction, and the rear limit block 31 is located at the rear of the conveying direction.

[0131] Furthermore, in the processing of some plates, such as veneer panels, paint-free panels and other plates whose surfaces are easily scratched, the conveying speed of the upper pressing belt can be equal to the conveying speed of the lower conveyor chain.

[0132] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A CNC double-end saw milling machine, comprising a first processing device (2) and a second processing device (3), wherein the first processing device (2) and the second processing device (3) are arranged opposite to each other, and the first processing device (2) and the second processing device (3) are both provided with a working part, and the working part includes a saw milling mechanism, characterized in that: Suitable for wood board processing, it also includes an intermediate support platform (1) and a lateral adjustment mechanism; The intermediate support platform (1) is provided between the first processing device (2) and the second processing device (3) and is used to support the plate (14) to be processed. The bottom of the intermediate support platform (1) is connected to the transverse adjustment mechanism. The first processing device (2) and the second processing device (3) are arranged on a transverse adjustment mechanism and can adjust the spacing laterally. The first processing device (2) is provided with a first pressing and conveying structure, and the second processing device (3) is provided with a second pressing and conveying structure. The first pressing and conveying structure and the second pressing and conveying structure respectively press and convey the two ends of the plate to be processed (14), so that the two ends of the plate to be processed (14) move synchronously. The pressing and conveying includes advanced conveying and lagging conveying. The first processing device (2) comprises a first frame (6) and a support plate (10); The first material pressing and conveying structure comprises a first upper material pressing and conveying mechanism (8) and a first lower position limiting and conveying mechanism (12); The first upper pressing material conveying mechanism (8) and the first lower limiting conveying mechanism (12) are both connected to a side of the first frame (6) facing the second processing device (3), and the first upper pressing material conveying mechanism (8) is located above the first lower limiting conveying mechanism (12); One end of the plate to be processed (14) can pass through the gap between the first upper material pressing conveying mechanism (8) and the first lower limit conveying mechanism (12); The support plate (10) is provided at the feed end of the first processing device (2) and can abut against one end of the plate (14) to be processed; The second processing device (3) comprises a second frame (7) and a push plate (11); The second material pressing and conveying structure comprises a second upper material pressing and conveying mechanism (9) and a second lower position limiting and conveying mechanism (13); The second upper pressing and conveying mechanism (9) and the second lower limiting and conveying mechanism (13) are both connected to a side of the second frame (7) facing the first processing device (2), and the second upper pressing and conveying mechanism (9) is located above the second lower limiting and conveying mechanism (13); One end of the plate to be processed (14) can pass through the gap between the second upper pressing conveying mechanism (9) and the second lower limiting conveying mechanism (13); The push plate (11) is provided at the feed end of the second processing device (3), can abut against the other end of the plate to be processed (14), and can push the plate to be processed (14) toward the first processing device (2); The first upper pressing and conveying mechanism (8) comprises a housing and a pressing servo motor (24), and a pressing belt (23), a pressing and conveying wheel (22), a pressing component (25) and a fixing block are arranged in the housing; The pressing belt (23) is wrapped around the pressing conveying wheel (22) and can contact the surface of the plate (14) to be processed from above; The pressing servo motor (24) is installed outside the housing, and the power output end of the pressing servo motor (24) can drive the pressing conveying wheel (22) to rotate; The pressing component (25) can press the pressing belt (23) downward; The fixing block is arranged in the inner ring of the pressing belt (23) and is connected to the inner wall of the shell; The first lower limit conveying mechanism (12) comprises a driven wheel (18), a limit block (19), a conveying chain plate (17), a travel switch (21) and a driving wheel groove (16); A driving wheel is installed in the driving wheel groove (16), and the driving wheel is capable of rotating under the drive of the driving motor (15), and the driving wheel groove (16) is close to the discharge end of the first processing device (2); The conveying chain plate (17) surrounds the driven wheel (18) and the driving wheel and is capable of rotating under the drive of the driving wheel; The limit block (19) is detachably arranged on the conveying chain plate (17) and moves along with the conveying chain plate (17). A protrusion is provided on the limit block (19); The travel switch (21) is provided at the feed end of the first processing device (2) and is used to detect the thickness of the plate (14) to be processed; The plate (14) to be processed can be placed on the conveyor chain plate (17) and limited between adjacent limit blocks (19); The first upper material pressing and conveying mechanism (8) and the second upper material pressing and conveying mechanism (9) have the same structure and are both provided with a driving structure, and are mirror-imaged and arranged on both sides of the middle support platform (1); The first lower limit conveying mechanism (12) and the second lower limit conveying mechanism (13) have the same structure and are both provided with a driving structure, and are mirror-imaged and arranged on both sides of the middle support platform (1); During processing, the following steps are included: S1. Placing the plate to be processed (14) at the feeding end of the first processing device (2) and the second processing device (3); S2. Adjust the push plate (11) so that the plate to be processed (14) rests on the support plate (10); S3. The plate to be processed (14) is limited between adjacent limit blocks (19), and as the conveyor chain plate (17) moves toward the working portion, the travel switch (21) controls the ruler to detect the thickness of the plate to be processed (14); S4. The first pressing material conveying structure and the second pressing material conveying structure are respectively pressed and conveyed to both ends of the plate to be processed (14); During the advance conveying, the conveying speed of the pressing belt (23) is greater than the conveying speed of the conveying chain plate (17), and the plate to be processed (14) abuts against the protruding portion of the front limit block (19) along the conveying direction of the conveying chain plate (17); During the delayed conveying, the conveying speed of the pressing belt (23) is lower than the conveying speed of the conveying chain plate (17), and the plate to be processed (14) abuts against the protruding portion of the rear limit block (19) along the conveying direction of the conveying chain plate (17).

2. A CNC double-end saw milling machine according to claim 1, characterized in that: The transverse adjustment mechanism comprises a first transverse frame (4) and a second transverse frame (5); The first transverse frame (4) and the second transverse frame (5) are arranged in parallel, and the first transverse frame (4) and the second transverse frame (5) are both provided with a ball screw and a slider capable of driving the first processing device (2) and the second processing device (3) to move transversely; The front bottom section of the first processing device (2) and the front bottom section of the second processing device (3) are arranged on a first transverse frame (4), and the rear bottom section of the first processing device (2) and the rear bottom section of the second processing device (3) are arranged on a second transverse frame (5).

3. A CNC double-end saw milling machine according to claim 2, characterized in that: The pressing component (25) includes a fixing rod (26), a connecting sleeve (27), a pressing wheel top spring (29), a pressing wheel shaft sleeve (28) and a pressing wheel (30); The fixing rod (26) is connected to the fixing block; The connecting sleeve (27) is provided at the end of the fixing rod (26) and is limited by a bolt; One end of the pressing wheel sleeve (28) is connected to the connecting sleeve (27), and the other end is connected to the pressing wheel (30); One end of the pressing wheel top spring (29) is connected to the pressing wheel shaft sleeve (28), and the other end is connected to the fixed block; The pressing wheel (30) contacts the inner ring of the pressing belt (23).

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