Numerical control double-end saw sand milling machine and feeding method

Abstract

The invention relates to the technical field of wood board machining, in particular to a numerical control double-end sawing and sand milling machine and a feeding method, by arranging a middle supporting table, the middle of a wood board is supported in the machining and feeding process of the double-end sawing and sand milling machine, and therefore the situation that the wood board collapses towards the middle due to the influence of the self weight during machining is avoided; and the overall machining precision is improved. Meanwhile, in the upper pressing conveying mechanism, independent pressing servo motors are arranged on the two sides of the upper pressing conveying mechanism for driving, synchronous feeding of the upper pressing conveying mechanism and the lower limiting conveying mechanism is ensured, and an advanced or lagged feeding mode of the to-be-machined plate can be rapidly adjusted based on the machining requirement of the to-be-machined plate; and independent electric lifting structures are additionally arranged on the two sides of the upper material pressing and conveying mechanism, so that the vertical height of the upper material pressing and conveying mechanism can be adjusted according to the thickness of the to-be-machined plate in the using process.

Description

Technical Field

[0001] The present invention relates to the technical field of wood-based panel processing, and specifically to a numerically controlled double-end sawing, milling and sanding machine and a feeding method thereof. Background Art

[0002] In the field of wood-based panel processing, processes such as sawing, milling, and sanding and polishing at both ends of the panel are key processes affecting the dimensional accuracy and surface quality of the product. If the existing processing methods are classified according to the processing method, they are mainly divided into single-end processing and double-end processing.

[0003] Currently, most enterprises adopt the method of single-end sequential processing, that is, after fixing one end of the panel, the end face treatment is completed, and then the panel is flipped for processing at the other end. Although this mode has low requirements for mechanical equipment, it requires frequent manual adjustment of the workpiece position, resulting in low processing efficiency and the risk of cumulative positioning errors, and is only applicable to some productions with low requirements for the dimensions of wood-based panels.

[0004] In double-end processing, synchronous cutting is achieved through the linkage of two main spindles. This processing method is more applied in the processing of metal materials. For wood-based panels, due to their own characteristics, when using a suspended double-end conveying method to process wood-based panels, on the one hand, due to the material factors of the wood-based panel itself, it will bend or collapse towards the middle under the influence of its own weight in this processing method, resulting in a reduction in the accuracy of synchronous processing on both sides. On the other hand, in the existing technology, the pressing method using a hydraulic system and a mechanical transmission chain, although the pressing and conveying of the wood-based panel are completed in the vertical direction, during the processing, with the introduction of processes such as sawing, milling, and sanding and polishing, displacement in the moving direction will occur, further increasing the processing error. Summary of the Invention

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

[0006] The technical solution adopted by the present invention is as follows. A numerically controlled double-end sawing, milling and sanding machine includes a first processing device and a second processing device. The first processing device and the second processing device are arranged opposite to each other. Working parts are arranged in both the first processing device and the second processing device, and the working part includes a sawing, milling and sanding mechanism. It also includes an intermediate support table and a lateral adjustment mechanism;

[0007] The intermediate support table is arranged between the first processing device and the second processing device for supporting the to-be-processed panel, and the bottom of the intermediate support table is connected to the lateral adjustment mechanism;

[0008] The first processing device and the second processing device are arranged on a lateral adjustment mechanism and can adjust the spacing laterally. A first material pressing and conveying structure is arranged on the first processing device, and a second material pressing and conveying structure is arranged on the second processing device. Moreover, the first material pressing and conveying structure and the second material pressing and conveying structure can enable both ends of the plate to be processed to move synchronously.

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

[0010] The first lateral frame and the second lateral frame are arranged in parallel. Ball screw rods and sliders capable of driving the first processing device and the second processing device to move laterally are arranged on both the first lateral frame and the second lateral frame;

[0011] The front bottom of the first processing device and the front bottom of the second processing device are arranged on the first lateral frame, and the rear bottom of the first processing device and the rear bottom of the second processing device are arranged on the second lateral 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 limiting and conveying mechanism;

[0014] Both the first upper material pressing and conveying mechanism and the first lower limiting and conveying mechanism are connected to the side of the first frame facing the second processing device, and the first upper material 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 limiting and conveying mechanism;

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

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

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

[0019] Both the second upper material pressing and conveying mechanism and the second lower limiting and conveying mechanism are connected to the side of the second frame facing the first processing device, and the second upper material 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 limiting and conveying mechanism;

[0021] The pushing 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 towards the first processing device.

[0022] Further, the first upper pressure feeding mechanism and the second upper pressure feeding mechanism have the same structure and are mirror - installed on both sides of the middle support table;

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

[0024] Further, the first upper pressure feeding mechanism includes a housing and a pressure feeding servo - motor, and a pressure feeding belt, pressure feeding conveying wheels, a lower pressing component and a fixing block are arranged in the housing;

[0025] The pressure feeding belt is wound around the pressure feeding conveying wheels and can contact the surface of the plate to be processed from above;

[0026] The pressure feeding servo - motor is installed outside the housing, and the power output end of the pressure feeding servo - motor can drive the pressure feeding conveying wheels to rotate;

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

[0028] The fixing block is arranged in the inner ring of the pressure feeding belt and is connected to the inner wall of the housing.

[0029] Further, the lower pressing component includes a fixing rod, a connecting sleeve, a pressure feeding wheel top spring, a pressure feeding wheel shaft sleeve and a pressure feeding wheel;

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

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

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

[0033] One end of the pressure feeding wheel top spring abuts against the pressure feeding wheel shaft sleeve, and the other end abuts against the fixing block;

[0034] The pressure feeding wheel contacts the inner ring of the pressure feeding belt.

[0035] Further, the first lower limit feeding 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 driven by a driving motor. The driving wheel groove is close to the discharge end of the first processing device;

[0037] The conveying chain plate is wound around the driven wheel and the driving wheel and can rotate driven by the driving wheel;

[0038] The limit block is detachably arranged on the conveying chain plate and moves together with the conveying chain plate. A protruding part is arranged on the limit block;

[0039] The travel switch is arranged 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 conveying chain plate and is limited between adjacent limiting blocks.

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

[0042] S1. Place the plate to be processed at the feeding ends of the first processing device and the second processing device.

[0043] S2. Adjust the push plate so that the plate to be processed abuts against the backing plate.

[0044] S3. The plate to be processed is limited between adjacent limiting blocks and moves towards the working part along with the conveying chain plate. The travel switch controls the feeler gauge to detect the thickness of the plate to be processed.

[0045] S4. The first pressure feeding and conveying structure and the second pressure feeding and conveying structure respectively perform pressure feeding and conveying on both ends of the plate to be processed.

[0046] Further, the pressure feeding and conveying includes forward conveying and backward conveying;

[0047] In the forward conveying, the conveying speed of the pressure belt is greater than the conveying speed of the conveying chain plate, and the plate to be processed abuts against the protruding part of the front limiting block along the conveying direction of the conveying chain plate;

[0048] In the backward conveying, the conveying speed of the pressure belt is less than the conveying speed of the conveying chain plate, and the plate to be processed abuts against the protruding part of the rear limiting block along the conveying direction of the conveying chain plate.

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

[0050] 1. By arranging the intermediate support table, the middle part of the wood-based panel is supported during the processing and feeding process of the double-end saw milling and sanding machine, so as to avoid the wood-based panel collapsing towards the middle due to its own weight during processing, and improve the overall processing accuracy.

[0051] 2. By respectively arranging the pressure feeding and conveying structures 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 pressure feeding and conveying method, and the overall processing accuracy is improved.

[0052] 3. By setting up an upper pressure feeding and conveying mechanism with a pressure belt, pressure feeding and conveying wheels, a lower pressing component, and a pressure feeding servo motor, it can provide a vertical force to the upper surface of the wooden board to be conveyed, enabling it to move along together, thus avoiding the phenomenon of asynchronous movement at both ends during sawing, milling, and sanding processes. By separately setting pressure feeding servo motors on both sides to drive and control the pressure feeding and conveying wheels on both sides respectively, synchronous feeding with the lower limit conveying mechanism is ensured. Moreover, these two pressure feeding servo motors can quickly adjust the conveying speed of the pressure belt by changing the rotational speed, thereby enabling quick adjustment of the feeding mode of the wooden board to be processed 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 conveying chain plate, a travel switch, and a driving wheel groove, the wooden board to be processed can be restricted between adjacent limit blocks and a horizontal force is provided to it, enabling it to move along together, thus avoiding the phenomenon of asynchronous movement at both ends during sawing, milling, and sanding processes.

[0054] 5. For wooden boards with different thicknesses and lengths, two pressure feeding and conveying methods, namely forward conveying and backward conveying, are provided to enable better synchronous feeding. Description of the Drawings

[0055] Figure 1 is a three-dimensional structure schematic diagram of a numerically controlled double-end sawing, milling, and sanding machine;

[0056] Figure 2 is a schematic diagram of one side structure of a numerically controlled double-end sawing, milling, and sanding machine;

[0057] Figure 3 is a schematic diagram of the other side structure of a numerically controlled double-end sawing, milling, and sanding machine;

[0058] Figure 4 is a schematic diagram of the upper pressure feeding and conveying mechanism and the lower limit conveying mechanism;

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

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

[0061] Figure 7 is a schematic diagram of the backward conveying structure.

[0062] In the figures:

[0063] 1 is the middle support platform, 2 is the first processing device, 3 is the second processing device, 4 is the first horizontal frame, 5 is the second horizontal frame, 6 is the first frame, 7 is the second frame, 8 is the first upper material pressing and conveying mechanism, 9 is the second upper material pressing and conveying mechanism, 10 is the backing plate, 11 is the pushing 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 material pressing and conveying wheel, 23 is the material pressing belt, 24 is the material pressing servo motor, 25 is the lower pressing component, 26 is the fixed rod, 27 is the connecting sleeve, 28 is the material pressing wheel shaft sleeve, 29 is the material pressing wheel top spring, 30 is the material pressing wheel, 31 is the rear limit block, 32 is the front limit block. Detailed implementation mode

[0064] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated 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 drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0066] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

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

[0068] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing 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 clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] As Figures 1 to 3 shown, a numerically controlled double-end saw milling and sanding machine includes a first processing device 2 and a second processing device 3. The first processing device 2 and the second processing device 3 are arranged opposite to each other. Working parts are provided in both the first processing device 2 and the second processing device 3, and the working parts include saw milling and sanding mechanisms, which are suitable for processing wood-based panels. It also includes an intermediate support table 1 and a lateral adjustment mechanism;

[0071] The intermediate support table 1 is arranged between the first processing device 2 and the second processing device 3 and is used to support the wood-based panel 14 to be processed. The bottom of the intermediate support table 1 is connected to the lateral adjustment mechanism;

[0072] The first processing device 2 and the second processing device 3 are arranged on the lateral adjustment mechanism and can adjust the spacing laterally. A first material pressing and conveying structure is arranged on the first processing device 2, and a second material pressing and conveying structure is arranged on the second processing device 3. The first material pressing and conveying structure and the second material pressing and conveying structure can make both ends of the wood-based panel 14 to be processed move synchronously.

[0073] The purpose of such a design is that by providing the intermediate support table, the middle part of the wood-based panel is supported during the processing and feeding process of the double-end saw milling and sanding machine, so as to avoid the wood-based panel collapsing towards the middle part under the influence of its own weight during processing and improve the overall processing accuracy. By respectively arranging the material pressing and conveying structures on the first processing device and the second processing device, the two sides of the wood-based panel to be processed can move synchronously based on the material pressing and conveying method, thus improving the overall processing accuracy.

[0074] Meanwhile, it should be noted that during the feeding process, corresponding auxiliary wheels are also 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 lateral adjustment mechanism includes a first lateral frame 4 and a second lateral frame 5;

[0076] The first lateral frame 4 and the second lateral frame 5 are arranged in parallel, and ball screws and sliders capable of driving the first processing device 2 and the second processing device 3 to move laterally are provided on both the first lateral frame 4 and the second lateral frame 5;

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

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

[0079] It should also be noted that in actual use, the intermediate support table is also arranged on the first lateral frame and the second lateral frame. In this way, when adjusting the positions of the first processing device and the second processing device, the position of the intermediate support table can be adjusted together.

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

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

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

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

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

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

[0086] The second material pressing and conveying structure includes a second upper material 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 and conveying mechanism 13 are both connected to one 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;

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

[0089] The pushing plate 10 is arranged at the feeding end of the second processing device 3, can abut against the other end of the to-be-processed plate 14, and can push the to-be-processed plate 14 towards the first processing device 2.

[0090] The purpose of such a design is that during processing, first place the to-be-processed plate at the feeding ends of the first processing device and the second processing device. After ensuring it is placed horizontally, control the pushing plate to push the to-be-processed plate towards the backing plate through a motor (the motor is not shown), and then start the first pressing and conveying structure and the second pressing and conveying structure. Driven by the synchronous driving motor, both ends of the to-be-processed plate move synchronously.

[0091] As Figure 4 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-symmetrically arranged on both sides of the middle support table 1;

[0092] The first lower limiting and conveying mechanism 12 and the second lower limiting and conveying mechanism 13 have the same structure and are mirror-symmetrically arranged on both sides of the middle support table 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-symmetrically arranged on both sides of the middle support table 1;

[0094] The first lower limiting and conveying mechanism 12 and the second lower limiting and conveying mechanism 13 have the same structure and are mirror-symmetrically arranged on both sides of the middle support table 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 conveying wheel 22, a lower pressing member 25 and a fixing block are arranged in the housing;

[0096] The pressing belt 23 is wound around the pressing conveying wheel 22 and can contact the surface of the to-be-processed plate 14 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 lower pressing member 25 can press the pressing belt 23 downwards;

[0099] The fixed block is arranged in the inner ring of the pressure belt 23 and is connected to the inner wall of the housing.

[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 driven by a 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 is wound around the driven wheel 18 and the driving wheel, and can rotate driven by the driving wheel.

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

[0104] The travel switch 21 is arranged at the feeding end of the first processing device 2 for detecting the thickness of the to-be-processed plate 14.

[0105] The to-be-processed plate 14 can be placed on the conveying chain plate 17 and is limited between adjacent limit blocks 19.

[0106] The purpose of such design is that in the upper pressure feeding mechanism part, the pressure feeding wheel rotates under the action of the pressure feeding servo motor, so that the pressure belt can drive the to-be-processed plate to move from the feeding end of the numerically controlled double-end saw milling and sanding machine towards the discharge end.

[0107] Meanwhile, the lower pressing part applies a downward force to the pressure belt, so that it can be closely attached to the upper surface of the to-be-processed plate. In this way, by setting the upper pressure feeding mechanism with a pressure belt, a pressure feeding wheel, a lower pressing part, and a pressure feeding servo motor, a vertical force can be provided to the upper surface of the to-be-conveyed wood plate, enabling it to move together, thereby avoiding the phenomenon of asynchronous at both ends during saw milling and sanding processing.

[0108] It should also be pointed out that as can be seen from the figure, in the upper pressure feeding mechanism, separate pressure feeding servo motors are arranged on both sides to drive and control the pressure feeding wheels on both sides respectively to ensure synchronous feeding with the lower limit conveying mechanism. And this double pressure feeding servo motor can quickly adjust the conveying speed of the pressure belt by changing the rotational speed, so as to quickly adjust the leading or lagging feeding mode of the to-be-processed plate based on the processing requirements of the to-be-processed plate.

[0109] In the lower limit conveying mechanism part, the first processing device and the second processing device are controlled by the same driving 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 limiting blocks, and a horizontal force is applied to it, enabling it to move along with them, thereby avoiding the phenomenon of asynchronous movement at both ends during sawing, milling, and sanding processing.

[0110] The set travel switches are usually set in groups of three in combination with photoelectric switches. The two travel switches at the front and rear ends are used to achieve the swinging action of the feeler gauge. The front-end travel switch controls the extension of the feeler gauge, and the rear-end travel switch controls the retraction of the feeler gauge; the middle travel switch and the photoelectric switch are used to detect the signal of the material entering the equipment.

[0111] Meanwhile, as Figure 5 shown, in this embodiment, the pressing member 25 includes a fixed rod 26, a connecting sleeve 27, a pressing wheel top spring 29, a pressing wheel bushing 28, and a pressing wheel 30.

[0112] The fixed rod 26 is connected to the fixed block.

[0113] The connecting sleeve 27 is arranged at the end of the fixed rod 26 and is limited by bolts.

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

[0115] One end of the pressing wheel top spring 29 abuts against the pressing wheel bushing 28, and the other end abuts against the fixed block.

[0116] The pressing wheel 30 is in contact with the inner circle of the pressing belt 23.

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

[0118] It should be noted that when making the overall height adjustment, an electric lifting device in the vertical direction can also be used to enable the overall height of the upper pressing conveying mechanism to be adjusted in the vertical direction. This adjustment method can be achieved by additionally arranging separate electric lifting structures on both sides of the upper pressing conveying mechanism, so that the vertical height of the upper pressing conveying mechanism can be adjusted according to the thickness of the plate to be processed during use. For example, the two upper pressing conveying mechanisms are respectively fixed on the first rack and the second rack through lifting members, and then the electric lifting structure is used to make them lift synchronously on the two racks.

[0119] In this embodiment, based on a numerically controlled double-end sawing and milling machine, a feeding method for the numerically controlled double-end sawing and milling machine is provided, including the following steps:

[0120] S1. Place the to-be-processed board 14 at the feeding ends of the first processing device 2 and the second processing device 3;

[0121] S2. Adjust the push plate 11 so that the to-be-processed board 14 abuts against the backing plate 10;

[0122] S3. The to-be-processed board 14 is limited between adjacent limit blocks 19 and moves towards the working part along with the conveying chain plate 17, and the travel switch 21 controls the feeler gauge to detect the thickness of the to-be-processed board 14;

[0123] S4. The first pressure-feeding and conveying structure and the second pressure-feeding and conveying structure respectively perform pressure-feeding and conveying on both ends of the to-be-processed board 14.

[0124] Meanwhile, the pressure-feeding and conveying includes forward conveying and backward conveying;

[0125] In the forward conveying, the conveying speed of the pressure-feeding belt 23 is greater than the conveying speed of the conveying chain plate 17, and along the conveying direction of the conveying chain plate 17, the to-be-processed board 14 abuts against the protruding part of the front limit block 19;

[0126] In the backward conveying, the conveying speed of the pressure-feeding belt 23 is less than the conveying speed of the conveying chain plate 17, and along the conveying direction of the conveying chain plate 17, the to-be-processed board 14 abuts against the protruding part of the rear limit block 19.

[0127] The purpose of such a design is to provide two pressure-feeding and conveying methods, namely forward conveying and backward conveying, for wood-based boards with different thicknesses and lengths, so that they can achieve better synchronous feeding.

[0128] As Figure 6 shown, for better description, in this embodiment, the limit block 19 located in front of the to-be-processed board 14 is described as the front limit block 32, providing a forward conveying structure. In this state, the conveying speed of the upper pressure-feeding belt is greater than that of the lower conveying chain plate, so that the to-be-processed board gradually moves towards the front limit block 32, finally abuts against it and is limited. In this way, there will be no shaking along the conveying direction during processing, and it is applicable to the processing of solid wood boards, plywood, and finger-jointed boards with longer lengths.

[0129] And as Figure 7As shown, for better description, in this embodiment, the description of the rear limiting block 31 for the limiting block 19 located behind the to-be-processed plate 14 is used, providing a lagging conveying structure. In this state, the conveying speed of the upper pressure belt is less than that of the lower conveying chain plate, so that the to-be-processed plate gradually moves towards the rear limiting block 31, finally abuts against it and is limited. In this way, there will be no shaking along the conveying direction during processing, and it is applicable to the processing of solid wood plates, plywood, and finger-jointed boards with shorter lengths.

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

[0131] Furthermore, in the processing of some plates, such as the to-be-processed plate parts with easily scratched surfaces like veneered panels and melamine boards, the conveying speed of the upper pressure belt can be selected to be equal to that of the lower conveying chain plate.

[0132] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A numerically controlled double-end sawing and 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 sawing and 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 arranged 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. 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 material pressing and conveying structure, and the second processing device (3) is provided with a second material pressing and conveying structure. The first material pressing and conveying structure and the second material pressing and conveying structure can enable the two ends of the plate (14) to be processed to move synchronously.

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 1, characterized in that: The first processing device (2) comprises a first frame (6) and a backing plate (10); The first material pressing and conveying structure comprises a first upper material pressing and conveying mechanism (8) and a first lower limit conveying mechanism (12); The first upper material pressing conveying mechanism (8) and the first lower position 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 material pressing conveying mechanism (8) is located above the first lower position limiting conveying mechanism (12); One end of the plate (14) to be processed 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 arranged at the feeding end of the first processing device (2) and can abut against one end of the plate (14) to be processed.

4. A CNC double-end saw milling machine according to claim 3, characterized in that: 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 limit conveying mechanism (13); The second upper pressing material conveying mechanism (9) and the second lower limiting 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 material conveying mechanism (9) is located above the second lower limiting conveying mechanism (13); One end of the plate (14) to be processed can pass through the gap between the second upper material pressing conveying mechanism (9) and the second lower limit conveying mechanism (13); The push plate (11) is arranged at the feeding 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) towards the first processing device (2).

5. A CNC double-end saw milling machine according to claim 4, characterized in that: 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 arranged in mirror images 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 arranged in mirror image on both sides of the middle support platform (1).

6. A CNC double-end saw milling machine according to claim 5, characterized in that: 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) surrounds the pressing conveying wheel (22) and can contact the surface of the plate (14) to be processed from above; The material pressing servo motor (24) is installed outside the housing, and the power output end of the material pressing servo motor (24) can drive the material 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.

7. A CNC double-end saw milling machine according to claim 6, characterized in that: The pressing component (25) comprises 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 arranged at the end of the fixing rod (26) and is limited by bolts; One end of the pressing wheel shaft 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 in contact with the pressing wheel shaft sleeve (28), and the other end is in contact with the fixing block; The pressing wheel (30) is in contact with the inner circle of the pressing belt (23).

8. A CNC double-end saw milling machine according to claim 6, characterized in that: 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 together with the conveying chain plate (17); a protrusion is arranged on the limit block (19); The travel switch (21) is arranged at the feeding 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 a conveying chain plate (17) and limited between adjacent limit blocks (19).

9. A feeding method for a CNC double-end saw milling machine, implemented based on the CNC double-end saw milling machine according to claim 8, characterized in that: The following steps are involved: 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. adjusting the push plate (11) so that the plate to be processed (14) is against the support plate (10); S3. The plate (14) to be processed is limited between adjacent limit blocks (19), and as the conveyor chain plate (17) moves toward the working part, the travel switch (21) controls the ruler to detect the thickness of the plate (14) to be processed; S4. The first pressing and conveying structure and the second pressing and conveying structure respectively press and convey the two ends of the plate (14) to be processed.

10. A feeding method for a CNC double-end saw milling machine according to claim 9, characterized in that: The material pressing and conveying includes advanced conveying and delayed conveying; 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).

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