Anti-damage wood feeding device of four-side moulder

By designing a damage-proof wood feeding device for four-sided planing equipment, the problem of offset during wood feeding is solved, automatic feeding and central positioning are realized, and processing quality and efficiency are improved.

CN119328857AInactive Publication Date: 2025-01-21JINGZHOU RUIZHIFENG WOOD IND CO LTD
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Patent Information

Application Number
CN202411556793.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-04
Publication Date
2025-01-21
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing four-sided planing equipment is prone to deviation during the wood loading process, which affects processing quality and efficiency.

Method used

A damage-preventing wood feeding device including a lifting component, a transposition component and a clamping component is designed. The lifting component is used to lift the wood, the transposition component transfers the wood to the feed port, and the clamping component achieves central positioning and automatic feeding of the wood through the clamping plate and cylinder.

Benefits of technology

It realizes the automatic loading and central positioning of wood, avoids offset during the loading process, and improves the quality and efficiency of wood processing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of wood processing, and discloses a damage-prevention wood feeding device of a four-side moulder, which comprises a planing and milling machine main body, one side of the planing and milling machine main body is provided with a feeding port, and one side of the planing and milling machine main body is provided with a lifting assembly, a transposition assembly and a clamping assembly; the clamping assembly is located between the lifting assembly and the planing and milling machine body, the transposition assembly is located above the lifting assembly and the clamping assembly, the lifting assembly is used for lifting wood, and the transposition assembly is used for transferring the wood to the position close to the feeding port. The clamping assembly is used for clamping wood and feeding the wood into the planing and milling machine body through the feeding port. The four-side moulder has the following advantages and effects that automatic feeding can be achieved, wood deviation in the feeding process is avoided, and the working stability of the four-side moulder is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of wood processing, in particular to a damage-proof wood feeding device for a four-sided planer. Background Art

[0002] A four-sided planer is a device used to process wood. By feeding the wood into the four-sided planer, the four sides of the wood can be directly planed, achieving the effect of processing four sides at one time. Wood is usually fed into the four-sided planer through a chain or a feed wheel. Before the wood enters the feed wheel, it is necessary to manually move the wood to the equipment and then feed the wood to the bottom of the feed wheel, which is time-consuming and labor-intensive, and is not conducive to improving work efficiency. In addition, if there is an offset during the feeding process of the wood entering the feed wheel, errors are likely to occur during the planing and milling process, thereby affecting the finished product and quality of the wood processing. Summary of the invention

[0003] The purpose of the present invention is to provide a damage-proof wood feeding device for a four-sided planer, which has the effects of automatically feeding, avoiding wood deviation during the feeding process, and improving the working stability of the four-sided planer.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: a damage-proof wood feeding device for a four-sided planer, comprising a planer and milling machine body, one side of the planer and milling machine body is set as a feed port, one side of the planer and milling machine body is provided with a lifting assembly, a shifting assembly and a clamping assembly, the clamping assembly is located between the lifting assembly and the planer and milling machine body, the shifting assembly is located above the lifting assembly and the clamping assembly, the lifting assembly is used to lift the wood, the shifting assembly is used to transfer the wood to the vicinity of the feed port, and the clamping assembly is used to clamp the wood and feed the wood into the planer and milling machine body through the feed port.

[0005] By adopting the above technical scheme, the wood is placed on the lifting assembly, and the lifting assembly lifts the wood to the height of the planer and milling machine body, eliminating the need for manual lifting and transportation, saving time and effort; the shifting assembly transfers the wood from the lifting assembly to the feed port near the planer and milling machine body, realizing automatic feeding and further improving processing efficiency; the clamping assembly clamps on both sides of the wood to achieve the center positioning of the wood feed, avoiding the deviation of the wood during the loading process and improving the wood processing quality.

[0006] The present invention is further configured as follows: the clamping assembly includes a support table, a first screw rod rotatably connected between the support table and the planing and milling machine body, a horizontal guide rod fixed between the support table and the planing and milling machine body, and a movable table threadedly connected to the first screw rod, the movable table slides on the horizontal guide rod, the first screw rod is driven to rotate by a driving mechanism, clamping cylinders are installed on both sides of the movable table, and clamping plates are fixed to the output ends of the clamping cylinders.

[0007] By adopting the above technical solution, after the wood is lifted and transported to the moving platform by the replacement assembly, the clamping cylinders on both sides drive the clamping plates to move and clamp the wood, and the driving mechanism drives the first screw to rotate to drive the moving platform and the wood to move horizontally, and the wood is fed into the planer and milling machine body. The feeding wheel in the planer and milling machine body continuously drives the wood forward for four-sided planing, which can avoid the deviation of the wood during the feeding process and improve the wood processing accuracy.

[0008] The present invention is further configured as follows: the lifting assembly includes vertical frames respectively located on both sides of the support platform, the vertical frames are connected to transmission rollers for vertical rotation, a connecting belt is sleeved between the upper and lower transmission rollers, the connecting belt is evenly fixed with support plates along its conveying direction, and the transmission rollers are driven to rotate by a transmission mechanism.

[0009] By adopting the above technical solution, the wood is placed between two support plates on the same horizontal plane, and the rotation of the transmission roller drives the connecting belt to lift the wood upward to a specified height, eliminating the need for manual lifting and transportation, saving time and effort; the connecting belt can continuously lift multiple pieces of wood, which is conducive to batch processing and further improves processing efficiency; when placing the stand, the bottom end of the stand can be placed below the ground level, and then when the support plates on both sides rotate to the lowest point, the processing personnel can directly move the wood on the ground between the two support plates.

[0010] The present invention is further configured as follows: the transposition assembly includes a support frame, a fixed plate fixed to the support frame, a second screw rod rotatably connected to the fixed plate, a movable seat threadedly connected to the second screw rod and sliding on the fixed plate, and a driving motor driving the second screw rod to rotate, a first cylinder is installed on the movable seat, and a clamp is fixed to the output end of the first cylinder.

[0011] By adopting the above technical solution, when the wood is lifted to a specified height, the first cylinder drives the clamp to descend, the clamp clamps the wood, the driving motor drives the second screw to rotate and drives the wood to move above the support table, the first cylinder releases the wood and places the wood on the support table, completing the automatic loading of the wood.

[0012] The present invention is further configured as follows: the clamp includes a fixed frame fixed to the output end of the first cylinder, a rotating rod respectively rotating on both sides of the fixed frame, a second cylinder respectively hinged on both sides of the fixed frame and a connecting piece hinged on the output end of the second cylinder, the connecting piece is fixed to the rotating rod at one end away from the second cylinder, the rotating rod is fixed with a connecting plate located below the fixed frame, and a plurality of clamps are fixed on the connecting plate.

[0013] By adopting the above technical solution, the second cylinders on both sides push the rotating rod to rotate through the connecting piece, and then the rotating rods on both sides drive the connecting plate and the clamping claws to rotate, clamping or releasing the wood on both sides, thereby realizing automatic grabbing and feeding of the wood.

[0014] The present invention is further configured as follows: the first cylinder body rotates on the moving seat, the output end of the first cylinder passes through the moving seat and is fixedly connected to the fixed frame, the first cylinder is fixed with a ring gear, the moving seat rotates with a first gear meshing with the ring gear, and the first gear is driven to rotate by a steering motor installed on the moving seat.

[0015] By adopting the above technical solution, when the clamp grabs the wood and the wood is moved above the movable table, the steering motor drives the first gear to rotate, and then the first gear drives the first cylinder, the clamp and the wood to rotate, and the wood is horizontally rotated 90° and placed on the movable table, so that the wood enters the planer and milling machine body along its length direction.

[0016] The present invention is further configured as follows: a third cylinder is fixed on the fixing frame, and a pressure plate located above the clamping claw is fixed on the output end of the third cylinder.

[0017] By adopting the above technical solution, when the clamp grabs the wood upwards, the output end of the third cylinder extends to drive the pressing plate to press the wood downward, thereby improving the lifting stability of the wood and further improving the handling stability.

[0018] The present invention is further configured as follows: the driving mechanism comprises two pulleys respectively fixed to the first screw rod and the second screw rod, and a transmission belt is sleeved between the two pulleys.

[0019] By adopting the above technical solution, the first screw and the second screw rotate synchronously through the transmission belt, so that when the clamp grabs the wood and moves it to the top of the moving platform, the first screw rotates to drive the moving platform to move from the feed port of the planer and milling machine body to the bottom of the wood, and then the clamp releases the wood and places the wood on the moving platform. When the second screw rotates to drive the clamp to return to the top of the lifting component, the first screw rotates to drive the moving platform to move toward the feed port and feed the clamped wood into the planer and milling machine body. When the wood is fed into the planer and milling machine body, the feeding wheel in the planer and milling machine body continuously drives the wood forward for four-sided planing, making the overall feeding operation more compact, which is conducive to shortening the processing time and thus improving the processing efficiency.

[0020] The present invention is further configured as follows: the transmission mechanism includes racks fixed on both sides of the moving seat, transmission shafts rotating on the stand are fixed at both ends of the transmission roller, sleeves are fixed at the ends of the transmission shaft, a second gear meshing with the rack and a first bevel gear coaxially fixed with the second gear are rotatably arranged on the stand, the stand is rotatably connected with a connecting shaft, a rotating plate located in the sleeve and a second bevel gear meshing with the first bevel gear are respectively fixed at both ends of the connecting shaft, a lever is slidably arranged on the rotating plate, a ratchet is fixed on the inner wall of the sleeve, and a pawl cooperating with the ratchet is fixed at the end of the lever.

[0021] By adopting the above technical scheme, when the second screw drives the moving seat to move from the upper stand on the moving platform, the racks on both sides of the moving seat mesh with the second gear and start to drive the second gear to rotate, and then the first bevel gear coaxial with the second gear rotates, driving the second bevel gear meshing with it to rotate, and then the connecting shaft and the rotating plate rotate, and the ratchet wheel is driven to rotate by the pawl at the end of the lever and the ratchet wheel, and then the sleeve, the transmission shaft and the transmission roller rotate, driving the connecting belt to transmit upward, moving the next layer of wood to the top layer, which is conducive to the continuous grasping of the wood by the clamp.

[0022] The present invention is further configured as follows: a sliding groove for the sliding of the shifting rod is fixed on the rotating plate, and a spring is fixed between the sliding groove and one end of the shifting rod away from the pawl.

[0023] By adopting the above technical solution, when the moving seat moves from the upper part of the vertical frame to the upper part of the moving platform, the second bevel gear, the connecting shaft and the rotating plate rotate, the inclined surface part of the pawl and the inclined surface part of the ratchet wheel resist each other to push the pawl, thereby pushing the lever to move into the slide groove, and the sleeve does not rotate; when the moving seat moves from the mobile platform to the upper part of the vertical frame, the second bevel gear, the connecting shaft and the rotating plate rotate, the straight part of the pawl and the straight part of the ratchet wheel resist each other to push the ratchet wheel to rotate, and the sleeve, the transmission shaft and the transmission roller rotate, thereby driving the wood to rise.

[0024] The beneficial effects of the present invention are:

[0025] 1. After the wood is lifted and transported to the mobile platform by the transposition assembly, the clamping cylinders on both sides drive the clamping plates to move and clamp the wood. The driving mechanism drives the first screw to rotate and drive the mobile platform and the wood to move horizontally, and the wood is sent into the planer and milling machine body. The feeding wheel in the planer and milling machine body continuously drives the wood forward for four-sided planing, which can avoid the deviation of the wood during the feeding process and improve the wood processing accuracy;

[0026] 2. The wood is placed between two support plates on the same horizontal plane. The driving roller rotates to drive the connecting belt to lift the wood to the specified height, eliminating the need for manual lifting and transportation, saving time and effort; the connecting belt can continuously lift multiple pieces of wood, which is conducive to batch processing and further improves processing efficiency;

[0027] 3. When the wood is lifted to the specified height, the first cylinder drives the clamp down, the clamp clamps the wood, the drive motor drives the second screw to rotate and drives the wood to move above the support table, the first cylinder releases the wood and puts the wood on the support table, completing the automatic loading of the wood;

[0028] 4. The overall structure cooperates with each other to make the feeding operation more compact, which is conducive to shortening the processing time and thus improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 It is a schematic diagram of the structure of the present invention.

[0031] Figure 2 It is a schematic diagram of the structure of the present invention.

[0032] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0033] Figure 4 It is a schematic diagram of the clamp structure in the present invention.

[0034] Figure 5 It is a schematic diagram of the transmission mechanism structure in the present invention.

[0035] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0036] In the figure, 1, planer and milling machine body; 2, feed port; 3, lifting assembly; 31, stand; 32, connecting belt; 33, support plate; 4, transposition assembly; 41, support frame; 42, fixed plate; 43, second screw rod; 44, moving seat; 45, driving motor; 46, first cylinder; 47, clamp; 471, fixed frame; 472, rotating rod; 473, second cylinder; 474, connecting piece; 475, connecting plate; 476, clamping claw; 5, clamping assembly; 51, support table; 52, first screw rod; 53, horizontal guide rod; 54, Moving table; 55, clamping cylinder; 56, clamping plate; 6, driving mechanism; 61, pulley; 62, transmission belt; 7, transmission mechanism; 701, rack; 702, transmission shaft; 703, sleeve; 704, second gear; 705, first bevel gear; 706, connecting shaft; 707, rotating plate; 708, second bevel gear; 709, lever; 710, ratchet; 711, pawl; 712, slide groove; 713, spring; 8, ring gear; 9, first gear; 10, steering motor; 11, third cylinder; 12, pressure plate. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1, a damage-proof wood feeding device for a four-sided planer, such as Figure 1 As shown, it includes a planer and milling machine body 1, one side of the planer and milling machine body 1 is set as a feed port 2, one side of the planer and milling machine body 1 is provided with a lifting component 3, a shifting component 4 and a clamping component 5, the clamping component 5 is located between the lifting component 3 and the planer and milling machine body 1, the shifting component 4 is located above the lifting component 3 and the clamping component 5, the lifting component 3 is used to lift the wood, the shifting component 4 is used to transfer the wood to the vicinity of the feed port 2, and the clamping component 5 is used to clamp the wood and feed the wood into the planer and milling machine body 1 through the feed port 2.

[0039] like Figure 1-2 As shown, the clamping assembly 5 includes a support table 51, a first screw rod 52 rotatably connected between the support table 51 and the planing and milling machine body 1, a horizontal guide rod 53 fixed between the support table 51 and the planing and milling machine body 1, and a movable table 54 threadedly connected to the first screw rod 52. The movable table 54 slides on the horizontal guide rod 53, and the first screw rod 52 is driven to rotate by the driving mechanism 6. Clamping cylinders 55 are installed on both sides of the movable table 54, and a clamping plate 56 is fixed to the output end of the clamping cylinder 55.

[0040] After the wood is lifted and transported to the movable platform 54 by the transposition assembly 4, the clamping cylinders 55 on both sides drive the clamping plates 56 to move and clamp the wood. The driving mechanism 6 drives the first screw 52 to rotate and drive the movable platform 54 and the wood to move horizontally, and the wood is sent into the planer and milling machine body 1. The feeding wheel in the planer and milling machine body 1 continuously drives the wood forward for four-sided planing, which can avoid the deviation of the wood during the feeding process.

[0041] like Figure 1 As shown, the lifting assembly 3 includes a stand 31 respectively located on both sides of the support platform 51, the stand 31 is connected to a transmission roller for vertical rotation, a connecting belt 32 is sleeved between the upper and lower transmission rollers, and the connecting belt 32 is evenly fixed with a support plate 33 along its conveying direction, and the transmission roller is driven to rotate by the transmission mechanism 7.

[0042] The wood is placed between two support plates 33 on the same horizontal plane, and the transmission mechanism 7 drives the transmission roller to rotate to drive the connecting belt 32 to drive and then lift the wood upward to a specified height, eliminating the need for manual lifting and transportation.

[0043] like Figure 1-2 As shown, the shifting assembly 4 includes a support frame 41, a fixed plate 42 fixed to the support frame 41, a second screw rod 43 rotatably connected to the fixed plate 42, a movable seat 44 threadedly connected to the second screw rod 43 and sliding on the fixed plate 42, and a driving motor 45 for driving the second screw rod 43 to rotate, a first cylinder 46 is installed on the movable seat 44, and a clamp 47 is fixed to the output end of the first cylinder 46.

[0044] When the wood is lifted to a specified height, the first cylinder 46 drives the clamp 47 to descend, the clamp 47 clamps the wood, the drive motor 45 drives the second screw 43 to rotate and drives the wood to move above the support platform 51, the clamp 47 releases the wood and places the wood on the support platform 51, completing the automatic loading of the wood.

[0045] like Figure 2-4 As shown, the clamp 47 includes a fixed frame 471 fixed to the output end of the first cylinder 46, a rotating rod 472 respectively rotating on both sides of the fixed frame 471, a second cylinder 473 respectively hinged on both sides of the fixed frame 471 and a connecting member 474 hinged on the output end of the second cylinder 473, the connecting member 474 is fixed to the rotating rod 472 at one end away from the second cylinder 473, the rotating rod 472 is fixed with a connecting plate 475 located below the fixed frame 471, and a plurality of clamps 476 are fixed on the connecting plate 475.

[0046] The change in the length of the output end of the second cylinder 473 on both sides pushes the connecting piece 474 and then drives the rotating rod 472 to rotate, and then the rotating rod 472 on both sides drives the connecting plate 475 and the clamping claw 476 to rotate, clamping or releasing the wood on both sides, thereby realizing automatic grabbing and feeding of the wood.

[0047] like Figure 2-4 As shown, the main body of the first cylinder 46 rotates on the moving seat 44, and the output end of the first cylinder 46 passes through the moving seat 44 and is fixedly connected to the fixed frame 471. The first cylinder 46 is fixed with a ring gear 8, and the moving seat 44 rotates with a first gear 9 meshing with the ring gear 8. The first gear 9 is driven to rotate by a steering motor 10 installed on the moving seat 44. The third cylinder 11 is fixed on the fixed frame 471, and the output end of the third cylinder 11 is fixed with a pressure plate 12 located above the clamp 476.

[0048] When the clamp 47 grabs the wood and moves it above the moving platform 54, the steering motor 10 drives the first gear 9 to rotate, and then the first gear 9 drives the first cylinder 46, the clamp 47 and the wood to rotate, and the wood is horizontally rotated 90° and placed on the moving platform 54, so that the wood enters the planer body 1 along its length direction; when the clamp 47 grabs the wood upwards and drives the wood to move, the output end of the third cylinder 11 extends to drive the pressure plate 12 to press the wood down, thereby improving the lifting stability of the wood.

[0049] like Figure 1-2 As shown, the driving mechanism 6 includes two pulleys 61 respectively fixed to the first screw rod 52 and the second screw rod 43 , and a transmission belt 62 is sleeved between the two pulleys 61 .

[0050] The first screw rod 52 and the second screw rod 43 rotate synchronously through the transmission belt 62, so that when the clamp 47 grabs the wood and moves it to above the moving platform 54, the first screw rod 52 rotates to drive the moving platform 54 to move from the feed port 2 of the planer and milling machine body 1 to under the wood, and then the clamp 47 releases the wood and places the wood on the moving platform 54. When the second screw rod 43 rotates to drive the clamp 47 to return to above the lifting component 3, the first screw rod 52 rotates to drive the moving platform 54 to move toward the feed port 2 to feed the clamped wood into the planer and milling machine body 1. When the wood is fed into the planer and milling machine body 1, the feeding wheel in the planer and milling machine body 1 continues to drive the wood forward for four-sided planing, making the overall feeding operation more compact and helping to shorten the processing time.

[0051] like Figure 1 , Figure 5-6 As shown, the transmission mechanism 7 includes a rack 701 fixed on both sides of the moving seat 44, a transmission shaft 702 rotating on the stand 31 is fixed at both ends of the transmission roller, a sleeve 703 is fixed at the end of the transmission shaft 702, a second gear 704 meshing with the rack 701 and a first bevel gear 705 coaxially fixed with the second gear 704 are rotatably provided on the stand 31, and a connecting shaft 706 is rotatably connected to the stand 31, and a rotating plate 707 located in the sleeve 703 and a second bevel gear 708 meshing with the first bevel gear 705 are respectively fixed at both ends of the connecting shaft 706, a lever 709 is slidably provided on the rotating plate 707, a ratchet 710 is fixed on the inner wall of the sleeve 703, a pawl 711 cooperating with the ratchet 710 is fixed at the end of the lever 709, a slide groove 712 for the lever 709 to slide is fixed on the rotating plate 707, and a spring 713 is fixed between the end of the lever 709 away from the pawl 711 and the slide groove 712.

[0052] When the second screw rod 43 drives the moving seat 44 to move from the upper side of the moving platform 54 to the upper side of the stand 31, the racks 701 on both sides of the moving seat 44 mesh with the second gear 704 and start to drive the second gear 704 to rotate, and then the first bevel gear 705 coaxial with the second gear 704 rotates, driving the second bevel gear 708 meshing therewith to rotate, and then the connecting shaft 706 and the rotating plate 707 rotate, and the straight part of the pawl 711 abuts against the straight part of the ratchet wheel 710 and cooperates with the ratchet wheel 710 to push the ratchet wheel 710 to rotate. When the movable seat 44 moves from the upper part of the frame 31 to the upper part of the movable platform 54, the second bevel gear 708, the connecting shaft 706 and the rotating plate 707 rotate, and the inclined surface of the pawl 711 abuts against the inclined surface of the ratchet wheel 710 to push the pawl 711, thereby pushing the lever 709 to move into the slide groove 712, and the sleeve 703 does not rotate, so that the connecting belt 32 only lifts the wood upward in one direction, thereby achieving the continuity and stability of the lifting work.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A damage-proof wood feeding device for a four-sided planer, comprising a planer and milling machine body (1), one side of the planer and milling machine body (1) being provided with a feeding port (2), characterized in that: A lifting component (3), a shifting component (4) and a clamping component (5) are arranged on one side of the planing and milling machine body (1); the clamping component (5) is located between the lifting component (3) and the planing and milling machine body (1); the shifting component (4) is located above the lifting component (3) and the clamping component (5); the lifting component (3) is used to lift wood; the shifting component (4) is used to transfer the wood to a position close to the feed port (2); and the clamping component (5) is used to clamp the wood and feed the wood into the planing and milling machine body (1) through the feed port (2).

2. The anti-damage wood feeding device for a four-sided molder according to claim 1, characterized in that: The clamping assembly (5) comprises a support platform (51), a first screw rod (52) rotatably connected between the support platform (51) and the planing and milling machine body (1), a horizontal guide rod (53) fixed between the support platform (51) and the planing and milling machine body (1), and a movable platform (54) threadedly connected to the first screw rod (52), the movable platform (54) slides on the horizontal guide rod (53), the first screw rod (52) is driven to rotate by a driving mechanism (6), clamping cylinders (55) are installed on both sides of the movable platform (54), and a clamping plate (56) is fixed to the output end of the clamping cylinder (55).

3. The anti-damage wood feeding device for a four-sided planer according to claim 2, characterized in that: The lifting assembly (3) comprises a stand (31) respectively located on both sides of the support platform (51); the stand (31) is connected to a transmission roller for rotation up and down; a connecting belt (32) is sleeved between the upper and lower transmission rollers; the connecting belt (32) is evenly fixed with a support plate (33) along its conveying direction; and the transmission roller is driven to rotate by a transmission mechanism (7).

4. The anti-damage wood feeding device for a four-sided planer according to claim 3, characterized in that: The shifting assembly (4) comprises a support frame (41), a fixed plate (42) fixed to the support frame (41), a second screw rod (43) rotatably connected to the fixed plate (42), a movable seat (44) threadedly connected to the second screw rod (43) and sliding on the fixed plate (42), and a driving motor (45) driving the second screw rod (43) to rotate, a first cylinder (46) is installed on the movable seat (44), and a clamp (47) is fixed to the output end of the first cylinder (46).

5. The anti-damage wood feeding device for a four-sided molder according to claim 4, characterized in that: The clamp (47) comprises a fixing frame (471) fixed to the output end of the first cylinder (46), a rotating rod (472) respectively rotating on both sides of the fixing frame (471), a second cylinder (473) respectively hinged on both sides of the fixing frame (471) and a connecting member (474) hinged on the output end of the second cylinder (473), wherein the connecting member (474) is fixed to the rotating rod (472) at one end away from the second cylinder (473), and the rotating rod (472) is fixed with a connecting plate (475) located below the fixing frame (471), and a plurality of clamping claws (476) are fixed on the connecting plate (475).

6. The anti-damage wood feeding device for a four-sided molder according to claim 5, characterized in that: The main body of the first cylinder (46) rotates on the movable seat (44); the output end of the first cylinder (46) passes through the movable seat (44) and is fixedly connected to the fixed frame (471); the first cylinder (46) is fixed with a gear ring (8); the movable seat (44) rotates with a first gear (9) meshed with the gear ring (8); the first gear (9) is driven to rotate by a steering motor (10) installed on the movable seat (44).

7. The anti-damage wood feeding device for a four-sided molder according to claim 5, characterized in that: A third cylinder (11) is fixed on the fixing frame (471), and a pressing plate (12) located above the clamping claw (476) is fixed on the output end of the third cylinder (11).

8. The anti-damage wood feeding device for a four-sided planer according to claim 4, characterized in that: The driving mechanism (6) comprises two pulleys (61) respectively fixed to the first screw rod (52) and the second screw rod (43), and a transmission belt (62) is sleeved between the two pulleys (61).

9. The anti-damage wood feeding device for a four-sided molder according to claim 4, characterized in that: The transmission mechanism (7) comprises racks (701) fixed on both sides of the movable seat (44), transmission shafts (702) rotating on the stand (31) are fixed at both ends of the transmission roller, sleeves (703) are fixed at the ends of the transmission shaft (702), a second gear (704) meshing with the rack (701) and a first bevel gear (705) coaxially fixed with the second gear (704) are rotatably mounted on the stand (31), and the stand (31) ) is rotatably connected to a connecting shaft (706), and a rotating plate (707) located in the sleeve (703) and a second bevel gear (708) meshed with the first bevel gear (705) are fixed at both ends of the connecting shaft (706), a shift rod (709) is slidably arranged on the rotating plate (707), a ratchet (710) is fixed to the inner wall surface of the sleeve (703), and a ratchet pawl (711) cooperating with the ratchet (710) is fixed to the end of the shift rod (709).

10. The anti-damage wood feeding device for a four-sided molder according to claim 9, characterized in that: A sliding groove (712) for the sliding of the shifting rod (709) is fixed on the rotating plate (707), and a spring (713) is fixed between the end of the shifting rod (709) away from the ratchet (711) and the sliding groove (712).