A quick replacement mechanism for a knife shaft and a four-side planer

Abstract

The utility model discloses a quick replacement mechanism of cutter shaft and four surface planer relates to planer technical field, including cutter main part, including, fixed establishment, set up on cutter main part, including set up on the outside base of cutter main part, fixedly connected with connecting block on the base, the movable joint has mounting plate on the connecting block, is equipped with the mounting hole on the mounting plate, is provided with fixed bolt on the mounting plate, the fixed bolt penetrates mounting hole and is connected with connecting block screw thread, fixedly connected with bearing on the mounting plate, the bearing inner ring is provided with cutter shaft subassembly, the cutter main part is set on cutter shaft subassembly. The utility model discloses through fixed establishment can to cutter shaft quick replacement, after butt joint, the fixed plate of setting on the cutter shaft is not easy to rotate, improves the rate of installation, and can carry out dustproof to the bearing used for guiding cutter shaft support, avoids the influence of the entry of swarf and uses.

Description

Technical Field

[0001] This utility model relates to the field of planer technology, and in particular to a quick-change cutter shaft mechanism and a four-sided planer. Background Technology

[0002] A four-sided planer is a type of woodworking machine tool that uses multi-axis linkage to simultaneously process the four surfaces of wood. It is usually equipped with two or more vertical horizontal planing shafts and horizontal vertical planing shafts. Some models integrate cutting, grinding, or flipping devices. It adopts a mechanical continuous forced clamping feed system to ensure stable workpiece transport and reduce displacement during processing. During the use of a four-sided planer, the cutters on the cutter shafts need to be replaced to meet the planing needs of different types of boards.

[0003] However, in practical applications, there are still some unresolved problems. The following are some common problems of four-sided planer cutter shafts: In the existing technology, most cutter shafts need to be fixed and limited by bolts and fixing plates after docking. During the fixing process, the fixing plate sleeved on the cutter shaft is easy to rotate, which makes it impossible for the through hole on it to be quickly aligned with the thread groove, affecting the installation speed and resulting in a long replacement time. Utility Model Content

[0004] In view of the problems existing in the cutter shafts of the existing four-sided planer, this utility model is proposed.

[0005] Therefore, the problem to be solved by this utility model is how to solve the support of the triangular area.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a tool shaft quick-change mechanism, including a tool body, comprising,

[0007] A fixing mechanism, mounted on the tool body, includes a base mounted on the outside of the tool body. A connecting block is fixedly connected to the base. A mounting plate is movably connected to the connecting block. The mounting plate has mounting holes and fixing bolts. The fixing bolts pass through the mounting holes and are threadedly connected to the connecting block. A bearing is fixedly connected to the mounting plate. A tool shaft assembly is mounted on the inner ring of the bearing. The tool body is sleeved on the tool shaft assembly. A drive shaft is sleeved at one end of the tool shaft assembly and contacts the surface of the tool body. A limiting component is fixedly connected to the connecting block and passes through the mounting plate. A dustproof component is fixedly connected to the mounting plate and is sleeved on the tool shaft assembly. A protective cover is fixedly connected to one side of the mounting plate.

[0008] As a preferred embodiment of the quick-change tool shaft mechanism of this utility model, the tool shaft assembly includes a shaft that is slidably connected to the inner wall of the tool body, a limit strip is fixedly connected to the shaft and slidably connected to the inner wall of the tool body, and one end of the shaft is inserted into the inner ring of the bearing.

[0009] As a preferred embodiment of the quick-change tool shaft mechanism of this utility model, a docking block is fixedly connected to one end of the shaft body, a docking groove is opened at one end of the drive shaft, the docking block is inserted into the docking groove, and a first limiting plate and a second limiting plate are respectively sleeved on the shaft body. The surface of the first limiting plate is in contact with the surface of the tool body, and the surface of the second limiting plate is in contact with the surface of the inner ring of the bearing.

[0010] As a preferred embodiment of the quick-change mechanism for the cutter shaft described in this utility model, the limiting member includes a limiting block fixedly connected to the connecting block. One end of the limiting block is inserted into the mounting hole. A groove is provided inside the limiting block. A locking block and a pressing block are slidably connected inside the groove. The surface of the locking block contacts the surface of the mounting plate and the surface of the pressing block, respectively. A movable rod is slidably connected to the limiting block, and one end of the movable rod is fixedly connected to the surface of the pressing block. A pressing block is fixedly connected to the other end of the movable rod.

[0011] As a preferred embodiment of the quick-change mechanism for the cutter shaft described in this utility model, a first guide block is fixedly connected to the locking block and is slidably connected to the groove body; a first spring is fixedly connected to the locking block and one end of the spring is fixedly connected to the inner wall of the groove body.

[0012] As a preferred embodiment of the quick-change mechanism for the cutter shaft described in this utility model, a second guide block is fixedly connected to the movable rod and is slidably connected to the limiting block. A second spring is fixedly connected to the second guide block, and one end of the spring is fixedly connected to the inner wall of the limiting block.

[0013] As a preferred embodiment of the quick-change mechanism for the cutter shaft described in this utility model, the dustproof component includes a cover fixedly connected to the mounting plate, a rubber airbag fixedly connected to the cover and sleeved on the shaft surface, a cylinder fixedly connected to the mounting plate, a push rod slidably connected to the cylinder, one end of the push rod contacting the surface of the connecting block, and the other end fixedly connected to a round block, and a connecting pipe connecting the rubber airbag and the cylinder.

[0014] As a preferred embodiment of the quick-change mechanism for the cutter shaft described in this utility model, a limit bolt is slidably connected to the circular block, a piston is fixedly connected to one end of the limit bolt, a third spring is sleeved on the surface of the limit bolt, and its two ends are fixedly connected to the surfaces of the circular block and the piston, respectively.

[0015] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a four-sided planer, including the aforementioned quick-change cutter shaft mechanism, and...

[0016] A planer assembly, mounted on a fixed mechanism, includes a housing fitted onto a base, within which a pressing assembly and a dust extraction assembly are respectively installed.

[0017] In a preferred embodiment of the four-sided planer of this utility model, a hydraulic tank door is rotatably connected to the machine housing, and a conveyor table and a feeding frame are fixedly connected to one side of the machine housing.

[0018] The advantages of this utility model are as follows: the fixing mechanism allows for quick replacement of the cutter shaft; after the cutter shaft is connected, the fixing plate sleeved on the cutter shaft is not easy to rotate, which improves the installation speed; and it can also prevent dust from entering the bearing used to support the guide shaft, thus preventing waste from affecting its use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a 3D structural diagram of a mechanism for quick-change of the cutter shaft.

[0021] Figure 2 Cross-sectional three-dimensional structure of the quick-change tool shaft mechanism Figure 1 .

[0022] Figure 3 Cross-sectional three-dimensional structure of the quick-change tool shaft mechanism Figure 2 .

[0023] Figure 4 For quick-change mechanism of the cutter shaft Figure 3 A magnified structural diagram of A in the middle.

[0024] Figure 5 For quick-change mechanism of the cutter shaft Figure 3 Enlarged structural diagram of B in the middle.

[0025] Figure 6 An exploded 3D structural diagram of the shaft and tool body of the quick-change tool shaft mechanism.

[0026] Figure 7 This is a 3D structural diagram of a four-sided planer.

[0027] Figure 8This is a 3D structural diagram of a quick-change cutter shaft mechanism and a four-sided planer.

[0028] In the diagram: 100, Fixing mechanism; 101, Base; 102, Connecting block; 103, Mounting plate; 104, Mounting hole; 105, Fixing bolt; 106, Tool shaft assembly; 107, Drive shaft; 108, Limiting component; 109, Bearing; 110, Dustproof component; 111, Protective cover; 200, Tool body; 106a, Shaft; 106b, Limiting strip; 106c, Connecting block; 106d, First limiting plate; 106e, Second limiting plate; 108a, Limiting block; 108b, Groove; 108c, Clamping block; 10 8e, Movable rod; 108f, Pressing block; 108g, First guide block; 108h, First spring; 108i, Second guide block; 108j, Second spring; 110a, Cover; 110b, Rubber airbag; 110c, Cylinder; 110d, Push rod; 110e, Round block; 110f, Connecting pipe; 110g, Limit bolt; 110h, Piston; 110i, Third spring; 300, Planer assembly; 301, Machine housing; 302, Holding assembly; 303, Dust collection assembly; 304, Hydraulic tank door; 305, Conveying table; 306, Feed frame. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0032] Example 1

[0033] Reference Figure 1 and Figure 2This is the first embodiment of the present utility model. This embodiment provides a quick-change cutter shaft mechanism and a four-sided planer. The quick-change cutter shaft mechanism and the four-sided planer include a fixing mechanism 100 and a cutter body 200. The fixing mechanism 100 enables quick replacement of the cutter shaft. After the cutter shaft is connected, the fixing plate sleeved on the cutter shaft is not easy to rotate. The cutter body 200 can perform planing on the board under the action of its rotation.

[0034] Specifically, the fixing mechanism 100 is set on the tool body 200, including a base 101 set outside the tool body 200. A connecting block 102 is fixedly connected to the base 101, and a mounting plate 103 is movably connected to the connecting block 102. The mounting plate 103 has mounting holes 104. One mounting plate 103 contacts two connecting blocks 102. There are four mounting holes 104 on one mounting plate 103. Two of them are connected to the connecting block 102 by fixing bolts 105, which support and limit the tool shaft assembly 106 inserted into the drive shaft 107. The other two are limited by limiting members 108, which limit the mounting plate 103 so that the tool shaft assembly 106 with mounting plate 103 is inserted into the drive shaft 107 and will not rotate, thus achieving initial positioning and allowing the fixing bolts 105 to pass through the mounting holes 104 and connect to the connecting block 102.

[0035] Mounting plate 103 is provided with fixing bolts 105, which pass through mounting hole 104 and are threadedly connected to connecting block 102. There are two fixing bolts 105 on mounting plate 103, which are used to stably fix mounting plate 103 to connecting block 102. The outer ring of bearing 109 is fixedly connected to mounting plate 103, and bearing 109 is fixedly connected to mounting plate 103. The inner ring of bearing 109 is provided with cutter shaft assembly 106. By setting bearing 109, the end of cutter shaft assembly 106 that is not inserted into drive shaft 107 is supported and limited, preventing it from moving during rotation, and making rotation less resistant and smoother.

[0036] The cutter body 200 is mounted on the cutter shaft assembly 106. One end of the cutter shaft assembly 106 is fitted with a drive shaft 107, which is in contact with the surface of the cutter body 200. One end of the drive shaft 107 is connected to the power transmission in the four-sided planer. By rotating the drive shaft 107, the cutter shaft assembly 106 can be limited, thereby causing the cutter body 200 to rotate and thus planing the wood.

[0037] A limiting member 108 is fixedly connected to the connecting block 102 and passes through the mounting plate 103. The limiting member 108 allows the cutter shaft assembly 106, on which the mounting plate 103 is mounted, to be inserted into the drive shaft 107, thus initially limiting the mounting plate 103 and preventing it from rotating. This facilitates subsequent connection of the fixing bolt 105 through the threaded groove on the connecting block 102 to fix the mounting plate 103 and the connecting block 102, thereby limiting the cutter shaft assembly 106 and the tool body 200. Even if the fixing bolt 105 loosens after long-term use, it can still limit the mounting plate 103, preventing the cutter shaft and tool from flying out and improving the safety of use.

[0038] A dustproof component 110 is fixedly connected to the mounting plate 103 and is sleeved on the cutter shaft assembly 106. The dustproof component 110 can prevent dust from entering one side of the bearing 109, reducing the amount of waste generated during the planing process from entering the bearing 109 and causing damage to it, thus affecting its rotation. A protective cover 111 is fixedly connected to one side of the mounting plate 103. The protective cover 111 covers one end of the shaft 106a of the bearing 109, thereby shielding one side of the bearing 109 from dust and preventing waste from entering the bearing 109.

[0039] Example 2

[0040] Reference Figures 2-6 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0041] Specifically, the cutter shaft assembly 106 includes a shaft 106a slidably connected to the inner wall of the cutter body 200. A limiting strip 106b is fixedly connected to the shaft 106a and slidably connected to the inner wall of the cutter body 200. One end of the shaft 106a is inserted into the inner ring of the bearing 109. A limiting groove is provided on the cutter body 200 to cooperate with the limiting strip 106b. Through the limiting strip 106b and the limiting groove, after the shaft 106a and the limiting strip 106b are inserted into the cutter body 200, the shaft 106a and the cutter body 200 will not rotate relative to each other. When the shaft 106a rotates, the cutter body 200 can rotate to cut the board.

[0042] A docking block 106c is fixedly connected to one end of the shaft 106a, and a docking groove is opened at one end of the drive shaft 107. The docking block 106c is inserted into the docking groove. The drive shaft 107 and the shaft 106a are connected through the docking block 106c and the docking groove, so that when the drive shaft 107 rotates, it can drive the shaft 106a to rotate, thereby causing the tool body 200 to rotate.

[0043] A first limiting plate 106d and a second limiting plate 106e are respectively fitted on the shaft 106a. The surface of the first limiting plate 106d is in contact with the surface of the tool body 200. The first limiting plate 106d limits the tool body 200 fitted on the shaft 106a. With the cooperation of the drive shaft 107, the tool body 200 is limited on the shaft 106a and will not move. The surface of the second limiting plate 106e is in contact with the inner ring surface of the bearing 109. The second limiting plate 106e limits the insertion of the shaft 106a into the bearing 109.

[0044] The limiting member 108 includes a limiting block 108a fixedly connected to the connecting block 102. One end of the limiting block 108a is inserted into the mounting hole 104. A groove 108b is provided in the limiting block 108a. A locking block 108c and a pressing block 108d are slidably connected in the groove 108b. Both ends of the locking block 108c are provided with inclined surfaces. One end of the locking block 108c is used to press the locking block 108c into the groove 108b when the mounting plate 103 is inserted into the limiting block 108a, so that the mounting plate 103 is fitted onto the limiting block 108a. After the locking block 108c is reset, it limits and fixes the mounting plate 103. The other end of the locking block 108c is used to move when it is pressed by the pressing block 108d, so that the locking block 108c releases the limiting effect on the mounting plate 103.

[0045] The surface of the locking block 108c contacts the surfaces of the mounting plate 103 and the pressing block 108d respectively. Both ends of the pressing block 108d are provided with inclined surfaces to facilitate the movement of the locking block 108c when it is pressed. A movable rod 108e is slidably connected to the limiting block 108a, and one end of the movable rod 108e is fixedly connected to the surface of the pressing block 108d. The other end of the movable rod 108e is fixedly connected to the pressing block 108f. When the movable rod 108e applies force to the pressing block 108f, it can move, thereby driving the pressing block 108d to move and press the locking block 108c, so that the locking block 108c releases the limiting position of the mounting plate 103.

[0046] A first guide block 108g is fixedly connected to the locking block 108c and is slidably connected inside the groove 108b. The first guide block 108g guides and limits the locking block 108c. A first spring 108h is fixedly connected to the locking block 108c and one end of the spring 108h is fixedly connected to the inner wall of the groove 108b. When the locking block 108c is squeezed and moved, the first guide block 108g moves to compress it. The resulting elastic force provides a force for the reset of the locking block 108c and the first guide block 108g.

[0047] A second guide block 108i is fixedly connected to the movable rod 108e and is slidably connected inside the limiting block 108a. The movable rod 108e is guided and limited by the second guide block 108i. A second spring 108j is fixedly connected to the second guide block 108i and one end of the spring 108j is fixedly connected to the inner wall of the limiting block 108a. When the pressing block 108f is applied to the movable rod 108e to move, the second guide block 108i moves to compress it. The resulting elastic force provides a force for the reset of the movable rod 108e, the pressing block 108d, and the pressing block 108f.

[0048] The dustproof component 110 includes a cover 110a fixedly connected to the mounting plate 103, a rubber air bladder 110b fixedly connected to the cover 110a and sleeved on the surface of the shaft 106a, a cylinder 110c fixedly connected to the mounting plate 103, a push rod 110d slidably connected to the cylinder 110c, one end of the push rod 110d contacting the surface of the connecting block 102, and the other end fixedly connected to a round block 110e, and a connecting pipe 110f connecting the rubber air bladder 110b and the cylinder 110c. After the rubber air bladder 110b is inflated, it contacts the surface of the shaft 106a, thereby reducing the amount of debris entering the cover 110a through the gaps between them, and thus preventing it from entering the bearing 109.

[0049] The push rod 110d passes through the cylinder 110c and is slidably connected to it. During the process of fixing the mounting plate 103, one end of the push rod 110d contacts the connecting block 102 to block it. As the mounting plate 103 moves, the cylinder 110c moves, causing the round block 110e to move, and the gas in the cylinder 110c is forced into the rubber air bag 110b to inflate it.

[0050] A limiting bolt 110g is slidably connected to the circular block 110e. The limiting bolt 110g passes through the circular block 110e and is slidably connected to it. A piston 110h is fixedly connected to one end of the limiting bolt 110g. A third spring 110i is sleeved on the surface of the limiting bolt 110g, and its two ends are fixedly connected to the surfaces of the circular block 110e and the piston 110h, respectively. With the setting of the third spring 110i, when the circular block 110e moves in the cylinder 110c, it drives the limiting bolt 110g, the third spring 110i and the piston 110h to move. When the inflation of the rubber airbag 110b is completed, the circular block 110e continues to move. At this time, the piston 110h cannot move, which causes the third spring 110i to be compressed. When the pressure in the rubber airbag 110b decreases, the piston 110h can be pushed to move under the action of the third spring 110i, increasing the pressure in the rubber airbag 110b.

[0051] Example 3

[0052] Reference Figure 7 and Figure 8 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0053] Specifically, the planer assembly 300 is mounted on the fixed mechanism 100 and includes a housing 301 fitted onto the base 101. A holding assembly 302 and a dust collection assembly 303 are installed inside the housing 301. The planer assembly 300 is a four-sided planer. The planer assembly 300, the holding assembly 302, and the dust collection assembly 303 are all existing technologies. The working principles of this part are also existing technologies, which are clearly understood by those skilled in the art and will not be elaborated upon here. The planer assembly 300 can plan the four sides of the board, the holding assembly 302 can adjust and hold the board being planed and conveyed, and the dust collection assembly 303 can collect the waste generated during planing.

[0054] A hydraulic box door 304 is rotatably connected to the housing 301. The hydraulic box door 304 can provide hydraulic support after being opened. A conveyor table 305 and a feed frame 306 are fixedly connected to one side of the housing 301. The conveyor table 305 can support the conveyed plate, and the feed frame 306 can conveniently and accurately feed the plate into the four-sided planer.

[0055] When using the tool shaft and tool, first use a wrench to remove the fixing bolt 105 from the mounting plate 103 and connecting block 102. Then, use your index finger and thumb to press the block 108f to move it, which in turn moves the movable rod 108e and the pressing block 108d. This causes the pressing block 108d to press the locking block 108c to move, thereby releasing the locking block 108c from limiting the mounting plate 103.

[0056] Then, by pulling the mounting plate 103 with the other hand, it can be removed from the limiting block 108a. During this process, the cylinder 110c moves. Under the action of the pressure inside the rubber airbag 110b and the cylinder 110c, the piston 110h and the round block 110e move inside the cylinder 110c, reducing the pressure inside the rubber airbag 110b, thereby reducing the contact with the shaft 106a.

[0057] After removing the cutter shaft assembly 106 and the cutter body 200 from the device, remove the cutter body 200 that is fitted onto the shaft 106a, and then fit the new cutter onto it. The installation is the reverse of the above operation.

[0058] In summary, compared with the prior art, the fixing mechanism 100 enables quick replacement of the cutter shaft. After the cutter shaft is connected, the fixing plate sleeved on the cutter shaft is not easy to rotate, which improves the installation speed. In addition, it can prevent dust from entering the bearing 109 used to support the guide shaft, thus preventing waste from affecting its use.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A quick change mechanism of a tool spindle comprising a tool body (200) characterized by: include, A fixing mechanism (100) is disposed on the tool body (200), including a base (101) disposed outside the tool body (200). A connecting block (102) is fixedly connected to the base (101), and a mounting plate (103) is movably connected to the connecting block (102). A mounting hole (104) is provided on the mounting plate (103), and a fixing bolt (105) is provided on the mounting plate (103). The fixing bolt (105) passes through the mounting hole (104) and is threadedly connected to the connecting block (102). A bearing (105) is fixedly connected to the mounting plate (103). 9) The inner ring of the bearing (109) is provided with a cutter shaft assembly (106), the cutter body (200) is sleeved on the cutter shaft assembly (106), one end of the cutter shaft assembly (106) is sleeved with a drive shaft (107), and it is in contact with the surface of the cutter body (200). A limiting member (108) is fixedly connected to the connecting block (102), and it penetrates the mounting plate (103). A dustproof member (110) is fixedly connected to the mounting plate (103), and it is sleeved on the cutter shaft assembly (106). A protective cover (111) is fixedly connected to one side of the mounting plate (103).

2. The quick change arbor mechanism of claim 1, wherein: The cutter shaft assembly (106) includes a shaft (106a) slidably connected to the inner wall of the cutter body (200), a limit strip (106b) fixedly connected to the shaft (106a), and slidably connected to the inner wall of the cutter body (200), with one end of the shaft (106a) inserted into the inner ring of the bearing (109).

3. The quick change arbor mechanism of claim 2 wherein: A docking block (106c) is fixedly connected to one end of the shaft (106a), and a docking groove is opened at one end of the drive shaft (107). The docking block (106c) is inserted into the docking groove. A first limiting plate (106d) and a second limiting plate (106e) are respectively sleeved on the shaft (106a). The surface of the first limiting plate (106d) is in contact with the surface of the tool body (200), and the surface of the second limiting plate (106e) is in contact with the inner ring surface of the bearing (109).

4. The quick change arbor mechanism of claim 1 wherein: The limiting member (108) includes a limiting block (108a) fixedly connected to the connecting block (102). One end of the limiting block (108a) is inserted into the mounting hole (104). A groove (108b) is provided in the limiting block (108a). A locking block (108c) and a pressing block (108d) are slidably connected in the groove (108b). The surface of the locking block (108c) is in contact with the surface of the mounting plate (103) and the surface of the pressing block (108d). A movable rod (108e) is slidably connected to the limiting block (108a), and one end of the movable rod (108e) is fixedly connected to the surface of the pressing block (108d). A pressing block (108f) is fixedly connected to the other end of the movable rod (108e).

5. The quick change arbor mechanism of claim 4 wherein: A first guide block (108g) is fixedly connected to the card block (108c) and is slidably connected to the groove (108b). A first spring (108h) is fixedly connected to the card block (108c) and one end of the spring is fixedly connected to the inner wall of the groove (108b).

6. The quick change arbor mechanism of claim 5 wherein: A second guide block (108i) is fixedly connected to the movable rod (108e) and is slidably connected inside the limiting block (108a). A second spring (108j) is fixedly connected to the second guide block (108i) and one end of the spring is fixedly connected to the inner wall of the limiting block (108a).

7. The quick change arbor mechanism of claim 2 wherein: The dustproof component (110) includes a cover (110a) fixedly connected to the mounting plate (103), a rubber airbag (110b) fixedly connected to the cover (110a) and sleeved on the surface of the shaft (106a), a cylinder (110c) fixedly connected to the mounting plate (103), a push rod (110d) slidably connected to the cylinder (110c), one end of the push rod (110d) contacting the surface of the connecting block (102), and the other end fixedly connected to a round block (110e), and a connecting pipe (110f) connecting the rubber airbag (110b) and the cylinder (110c).

8. The quick change arbor mechanism of claim 7 wherein: A limit plug (110g) is slidably connected to the circular block (110e). A piston (110h) is fixedly connected to one end of the limit plug (110g). A third spring (110i) is sleeved on the surface of the limit plug (110g), and its two ends are fixedly connected to the surfaces of the circular block (110e) and the piston (110h) respectively.

9. A four-side planer, characterized by: Including the quick-change tool shaft mechanism as described in any one of claims 1 to 8, and, The planer assembly (300) is mounted on the fixing mechanism (100) and includes a housing (301) fitted on the base (101). The housing (301) is equipped with a pressing assembly (302) and a dust collection assembly (303).

10. A four-side planer as claimed in claim 9, characterized in that: A hydraulic box door (304) is rotatably connected to the housing (301), and a conveyor table (305) and a feed frame (306) are fixedly connected to one side of the housing (301).

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