A trimming machine

Abstract

A new type of trimming machine, comprising a housing and a cutter shaft rotatably connected within the housing, and a motor electrically connected to the cutter shaft is provided within the housing, and a cutter base is formed at the bottom of the cutter shaft; characterized in that, a gear controller electrically connected to the motor is provided on the housing, and a display screen electrically connected to the gear controller is provided on the housing; the housing comprises a connected outer housing and an inner housing, and the inner housing comprises a first inner housing and a second inner housing that are snap-connected, and the cutter shaft is rotatably connected to the inner housing; compared with the prior art, by providing a limit block, the fixed connection between the cutter shaft and the housing can be realized under the action of a screw, thereby restricting the rotation of the cutter shaft and preventing the accidental start-up operation of the trimming machine, having better safety. At the same time, the setting of the snap connector enables the steering force received by the screw to be offset by the snap connector and the limit block simultaneously when the trimming machine is accidentally started, and has better safety for locking the cutter shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of trimming machines, and particularly relates to a trimming machine. Background Art

[0002] A trimming machine is a motor-driven movable trimming device used for chamfering wood, trimming metal, grinding the edges of strips, etc. It is also called a chamfering machine. It uses a cutter head to chamfer the edge of a wooden board and can shape the edge of the wooden board according to the shape of the cutter head. It is usually used to chamfer a right angle into a rounded edge and can also be used for proper polishing of wood. It is also widely applicable to the reinforcement of building beams, slabs, columns, walls, etc., decoration, wall installation, brackets, railings, billboards, outdoor air conditioners, guide rails, satellite receivers, elevators, installation of steel structure workshops, etc.

[0003] A manual trimming machine has a handheld structure, is small and flexible, and has a relatively wide range of applications. It is mainly used for carving, grooving, trimming, chamfering, guiding arcs, opening straight grooves, milling through holes, or manually correcting areas that are difficult to process by large woodworking equipment. However, there are some problems in the use of existing trimming machines. First, existing trimming machines usually install a fan inside to blow away debris, but since the trimming machine repairs the edge of the workpiece, the fan will blow the debris into the workpiece, thus affecting the trimming operation of the trimming machine on the workpiece. Second, different milling speeds of the trimming machine are required for different materials, and it is difficult to directly observe the current milling speed level in the prior art. Third, when the trimming machine is in a stationary state, accidentally touching the switch easily causes the trimming machine to be accidentally turned on, thus posing a certain safety hazard. Summary of the Invention

[0004] The present invention is to overcome the above-mentioned defects in the prior art and provides a trimming machine with controllable speed, convenient for observing the milling speed level, and safely locking the trimming machine that is not working.

[0005] To achieve the above-mentioned invention object, the present invention adopts the following technical solutions: A trimming machine, comprising a housing and a cutter shaft rotatably connected inside the housing, and a motor electrically connected to the cutter shaft is provided inside the housing, and a cutter base is formed at the bottom of the cutter shaft; characterized in that, a gear controller electrically connected to the motor is provided on the housing, and a display screen electrically connected to the gear controller is provided on the housing; the housing comprises an outer housing and an inner housing connected to each other, and the inner housing comprises a first inner housing and a second inner housing connected by clamping, and the cutter shaft is rotatably connected to the inner housing; a clamping member is provided between the first inner housing and the second inner housing, and a clamping groove adapted to the clamping member is formed on the outer housing; a hollow base is formed at the bottom of the outer housing, a limiting block extending downward is formed on the base, a limiting hole is formed on the limiting block, the cutter shaft passes through the base and extends downward, and a locking hole adapted to the limiting hole is formed on the cutter shaft, and the locking hole is located above the cutter base; a fan and a bearing bush are provided on the cutter shaft, the bearing bush is located below the fan, and both the fan and the bearing bush are located above the locking hole.

[0006] As a preferred solution of the present invention, the bottoms of the first inner housing and the second inner housing simultaneously abut against the top and the side wall of the clamping member.

[0007] As a preferred solution of the present invention, the clamping member comprises a first cylinder and a second cylinder connected to each other, the first cylinder and the second cylinder are located on the same straight line, and the size of the second cylinder is larger than that of the first cylinder, the first cylinder is located in the clamping groove, the second cylinder abuts against the outer housing, and the first cylinder extends downward along the bottoms of the first inner housing and the second inner housing.

[0008] As a preferred solution of the present invention, clamping protrusions are formed on both sides of the second cylinder and are arranged horizontally outward along the outer wall of the second cylinder, and clamping grooves adapted to the clamping protrusions are formed in the first inner housing and the second inner housing.

[0009] As a preferred solution of the present invention, the clamping protrusion comprises a first clamping block and a second clamping block arranged crosswise, the relatively arranged first clamping blocks are located on the same straight line, and the relatively arranged second clamping blocks are arranged in parallel.

[0010] As a preferred solution of the present invention, the base is of an annular structure, and connecting ribs connected to the inner wall of the outer housing are formed at the edge of the base, and air outlets are formed between adjacent connecting ribs and in the middle of the base.

[0011] As a preferred solution of the present invention, the bearing bush comprises a bearing and a bearing chamber, the bearing chamber is fixedly connected to the inner housing, the bearing is sleeved on the cutter shaft, and the bearing is located in the bearing chamber. A stabilizing member for clamping with the clamping member is further provided at the top of the bearing bush.

[0012] As a preferred embodiment of the present invention, a screw seat and a mating groove adapted to the second inner housing are formed on the first inner housing.

[0013] As a preferred embodiment of the present invention, a positioning nut connected by thread is provided at the bottom of the cutter shaft.

[0014] As a preferred embodiment of the present invention, a battery seat and a control button are further provided on the housing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by providing a limiting block, the fixed connection between the cutter shaft and the housing can be realized under the action of the screw, thereby restricting the rotation of the cutter shaft and the milling cutter, having better safety. At the same time, the setting of the clamping member makes the inner housing and the outer housing have better stability. When there is a certain relative rotation between the inner housing and the outer housing, the clamping member abuts against the outer housing to offset the rotational force, and a bearing bushing is provided in the housing to isolate the inner housing from the cutter shaft, playing a role of double insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present invention;

[0017] Figure 2 is the front view of the present invention;

[0018] Figure 3 is the top view of the present invention;

[0019] Figure 4 is the bottom view of the present invention;

[0020] Figure 5 is the half-sectional view of the present invention;

[0021] Figure 6 is the half-sectional schematic view of the bearing chamber;

[0022] Figure 7 is the connection schematic view of the cutter shaft and the gear position controller;

[0023] Figure 8 is the structural schematic view of the clamping member;

[0024] Figure 9 is the structural schematic view of the outer housing;

[0025] Reference numerals: housing 1, cutter shaft 2, cutter holder 2-1, locking hole 2-2, positioning nut 2-3, motor 3, gear controller 4, display screen 5, outer housing 6, base 6-1, card slot 6-2, connecting rib 6-3, limiting block 6-4, limiting hole 6-5, inner housing 7, mating groove 7-1, screw seat 7-2, clamping member 8, first cylinder 8-1, second cylinder 8-2, clamping protrusion 8-3, first clamping block 8-4, second clamping block 8-5, bearing bushing 9, fan 10, battery holder 11, control button 12, anti-misoperation button 13, stabilizing member 14. Detailed implementation manners

[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] As Figures 1-9 shown, a trimming machine includes a housing 1 and a cutter shaft 2 rotatably connected within the housing, and a motor 3 electrically connected to the cutter shaft 2 is provided within the housing 1, and a cutter holder 2-1 is formed at the bottom of the cutter shaft 2; a gear controller 4 electrically connected to the motor 3 is provided on the housing, and a display screen 5 electrically connected to the gear controller 4 is provided on the housing; the housing 1 includes an outer housing 6 and an inner housing 7 connected to each other, and the inner housing 7 includes a first inner housing and a second inner housing connected by clamping, and the cutter shaft 2 is rotatably connected to the inner housing 7; a clamping member 8 is provided between the first inner housing and the second inner housing, and a card slot 6-2 adapted to the clamping member 8 is formed on the outer housing 6; a hollow base 6-1 is formed at the bottom of the outer housing 6, a limiting block 6-4 extending downward is formed on the base 6-1, a limiting hole 6-5 is formed on the limiting block 6-4, the cutter shaft 2 extends downward through the base 6-1, and a locking hole 2-2 adapted to the limiting hole 6-5 is formed on the cutter shaft 2, and the locking hole 2-2 is located above the cutter holder 2-1; a fan 10 and a bearing bushing 9 are provided on the cutter shaft 2, the bearing bushing 9 is located below the fan 10, and both the fan 10 and the bearing bushing 9 are located above the locking hole 2-2.

[0028] The cutter shaft 2 is arranged along the length direction of the housing 1, the housing 1 is of a cylindrical structure, a milling cutter can be installed on the cutter holder 2-1, which is convenient for the operator to grasp, and the gear controller 4 adjusts the magnitude of the current input to the motor 3, thereby adjusting the operating power of the motor 3, controlling the rotation speed of the cutter shaft 2, and controlling the cutting speed of the milling cutter.

[0029] Screws are arranged in the limiting hole 6-5 and the locking hole 2-2, and the screws can pass through the limiting hole 6-5 and be connected to the locking hole 2-2, so as to realize the fixed connection between the screws and the cutter shaft 2. Under the action of the screws, the fixed connection between the base 6-1 and the cutter shaft 2 can be realized, thereby limiting the rotation of the cutter shaft 2 and clamping the milling cutter.

[0030] The fan 10 rotates synchronously with the cutter shaft 2. A key and a keyway adapted to the cutter shaft 2 can be provided in the middle of the fan 10. The bearing bushing 9 is located below the fan 10. Under the action of the bearing bushing 9, the cutter shaft 2 can be isolated from the inner housing 7.

[0031] The display screen 5 is connected to the gear controller 4 through a wire. The current gear level of the gear controller 4 is displayed on the display screen 5. The motor 3 is electrically connected to the cutter shaft 2. The motor 3 drives the rotation of the cutter shaft 2. The motor 3 is connected to the gear controller 4 through a wire.

[0032] The bottoms of the first inner housing and the second inner housing are simultaneously abutted against the top and the side wall of the clamping member 8, so as to limit the clamping member 8 in part of the axial direction and part of the radial direction along the housing 1.

[0033] Both the first inner housing and the second inner housing are of a semi-circular structure, so that the clamping member 8 is located at the connection of the two sides of the first inner housing and the second inner housing, and the clamping members 8 on both sides are arranged oppositely.

[0034] The bearing bushing 9 is provided with a stabilizing member 14 that is clamped to the clamping member 8. A groove is formed at the top of the clamping member 8. Protrusions adapted to the groove are formed on both sides of the stabilizing member 14. And the stabilizing member 14 is of an arc structure. Under the action of the stabilizing member 14, the protrusions at both ends of the stabilizing member 14 are simultaneously embedded in the grooves of the oppositely arranged clamping members 8, so as to limit the oppositely arranged clamping members 8 at the same time, making the clamping member 8 have better stability between the first inner housing and the second inner housing.

[0035] The clamping member 8 includes a connected first cylinder 8-1 and a second cylinder 8-2. The first cylinder 8-1 and the second cylinder 8-2 are located on the same straight line, and the size of the second cylinder 8-2 is larger than that of the first cylinder 8-1. The first cylinder 8-1 is located in the card slot 6-2, the second cylinder 8-2 abuts against the outer housing 6, and the first cylinder 8-1 extends downward along the bottoms of the first inner housing and the second inner housing.

[0036] The second cylinder 8-2 is used to position the clamping member 8. The first cylinder 8-1 cooperates with the outer housing 6, so that when the outer housing 6 rotates, the outer wall of the first cylinder 8-1 abuts against the inner wall of the card slot 6-2, thereby restricting the rotation of the outer housing 6.

[0037] Clamping protrusions 8-3 are formed on both sides of the second cylinder 8-2 and are arranged horizontally outward along the outer wall of the second cylinder 8-2. And clamping grooves adapted to the clamping protrusions 8-3 are formed in the first inner housing and the second inner housing. The clamping protrusions 8-3 include a first clamping block 8-4 and a second clamping block 8-5 that are cross-arranged. The oppositely arranged first clamping blocks 8-4 are located on the same straight line, and the oppositely arranged second clamping blocks 8-5 are arranged in parallel.

[0038] An LED lamp is formed on the snap - fitting part 8 and is arranged downward. Since the snap - fitting part 8 is always in a relatively static state, the LED lamp can illuminate the trimming position of the trimming machine, thus ensuring the reliability of the trimming work.

[0039] The first snap - fitting block 8 - 4 is placed on the bottoms of the first inner housing and the second inner housing. The second snap - fitting block 8 - 5 extends inward along the first inner housing and the second inner housing, and the bottom of the second snap - fitting block 8 - 5 abuts against the top of the bearing bushing 9, so that the bearing bushing 9 has better stability within the inner housing 7.

[0040] The base 6 - 1 has a circular - ring structure, and connecting ribs 6 - 3 connected to the inner wall of the outer housing 6 are formed at the edge of the base 6 - 1. Air outlets are formed between adjacent connecting ribs 6 - 3 and in the middle of the base 6 - 1. The base 6 - 1, the outer housing 6, and the connecting ribs 6 - 3 are all made of plastic material, and the base 6 - 1, the outer housing 6, and the connecting ribs 6 - 3 are integrally formed by injection molding. The base 6 - 1 is arranged parallel to the fan 10. Under the action of the fan 10, a downward air current is formed at the air outlet. The fan 10 blows the wood chips formed at the milling cutter, thus preventing the wood chips from flying towards the user's body and face, enabling the user to have a better operation experience and safety. And the air current of the fan 10 passes through the bearing bushing 9, thus preventing debris from flying into the bearing bushing 9, making the bearing bushing 9 have better stability and reliability. The number and size of the connecting ribs 12 are set according to actual needs, and the connecting ribs 12 are circumferentially arranged along the edge of the base 10.

[0041] The bearing bushing 9 is fixedly connected to the upper part inside the inner housing 7, and the bearing bushing 9 is a hollow cylindrical structure with an upward - opening. The bearing bushing 9 includes a bearing and a bearing chamber. The bearing chamber is fixedly connected to the inside of the inner housing 7. The bearing is sleeved on the cutter shaft 2, and the bearing is located inside the bearing chamber. The bearing chamber includes a connected bottom plate and side plates. The side plates are arc - shaped structures, the side plates are vertically arranged along the outer edge of the bottom plate, the bottom plate is horizontally arranged, and a through - hole adapted to the cutter shaft 2 is formed on the bottom plate.

[0042] Screw seats 7 - 2 and mating grooves 7 - 1 adapted to the second inner housing 7 are formed on the first inner housing 7. The first inner housing 7 and the second inner housing 7 are fixedly connected by screws and snap - fitting.

[0043] A positioning nut 2 - 3 connected by thread is provided at the bottom of the cutter shaft 2. The positioning nut 2 - 3 abuts against the bottom of the milling cutter. External threads adapted to the positioning nut 2 - 3 are formed at the bottom of the cutter shaft 2. Under the action of the positioning nut 2 - 3, the stability of the milling cutter is ensured.

[0044] A battery seat 11 and a control button 12 are also provided on the housing 1. The battery seat 11 is used to place a storage battery, and the storage battery supplies power to the motor 3. The control button 12 is used to control the start and stop of the motor 3.

[0045] The housing 1 is also provided with a mis-opening button, which includes an independent locking button and an unlocking button. When the locking button is pressed, the control button 12 is in the off state and cannot drive the tool shaft 2. When the unlocking button is pressed, the control button 12 is in the connected state and can drive the tool shaft 2.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.

[0047] Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0048] Although the terms such as housing 1, tool shaft 2, tool holder 2-1, locking hole 2-2, positioning nut 2-3, motor 3, gear controller 4, display screen 5, outer housing 6, base 6-1, card slot 6-2, connecting rib 6-3, limiting block 6-4, limiting hole 6-5, inner housing 7, mating groove 7-1, screw seat 7-2, clamping member 8, first cylinder 8-1, second cylinder 8-2, clamping protrusion 8-3, first clamping block 8-4, second clamping block 8-5, bearing bushing 9, bottom plate, side plate, fan 10, battery holder 11, control button 12, anti-mis-opening button 13, stabilizing member 14, etc. are used more in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A trimming machine, comprising a housing (1) and a cutter shaft (2) rotatably connected within the housing, and a motor (3) electrically connected to the cutter shaft (2) is provided within the housing (1), and a cutter seat (2-1) is formed at the bottom of the cutter shaft (2); characterized in that, A gear controller (4) electrically connected to the motor (3) is provided on the housing, and a display screen (5) electrically connected to the gear controller (4) is provided on the housing; the housing (1) includes a connected outer housing (6) and an inner housing (7), and the inner housing (7) includes a first inner housing and a second inner housing that are snap-connected, and the cutter shaft (2) is rotatably connected to the inner housing (7); a snap connector (8) is provided between the first inner housing and the second inner housing, and a card slot (6-2) adapted to the snap connector (8) is formed on the outer housing (6); a hollow base (6-1) is formed at the bottom of the outer housing (6), a limiting block (6-4) extending downward is formed on the base (6-1), a limiting hole (6-5) is formed on the limiting block (6-4), the cutter shaft (2) passes through the base (6-1) and extends downward, and a locking hole (2-2) adapted to the limiting hole (6-5) is formed on the cutter shaft (2), and the locking hole (2-2) is located above the cutter holder (2-1); a fan (10) and a bearing bushing (9) are provided on the cutter shaft (2), the bearing bushing (9) is located below the fan (10), and both the fan (10) and the bearing bushing (9) are located above the locking hole (2-2); the bottoms of the first inner housing and the second inner housing simultaneously abut against the top and the side wall of the snap connector (8); the snap connector (8) includes a connected first cylinder (8-1) and a second cylinder (8-2), the first cylinder (8-1) and the second cylinder (8-2) are located on the same straight line, and the size of the second cylinder (8-2) is larger than that of the first cylinder (8-1), the first cylinder (8-1) is located in the card slot (6-2), the second cylinder (8-2) abuts against the outer housing (6), and the first cylinder (8-1) extends downward along the bottoms of the first inner housing and the second inner housing.

2. The trimming machine according to claim 1, characterized in that, Snap projections (8-3) are formed on both sides of the second cylinder (8-2) and are horizontally arranged outward along the outer wall of the second cylinder (8-2), and snap grooves adapted to the snap projections (8-3) are formed in the first inner housing and the second inner housing.

3. The trimming machine according to claim 2, characterized in that, The snap projection (8-3) includes a first snap block (8-4) and a second snap block (8-5) that are cross-set, the relatively arranged first snap blocks (8-4) are located on the same straight line, and the relatively arranged second snap blocks (8-5) are parallel.

4. The trimming machine according to claim 1, characterized in that, The base (6-1) has a circular ring structure, and connecting ribs (6-3) connected to the inner wall of the outer housing (6) are formed at the edge of the base (6-1), and air outlets are formed between adjacent connecting ribs (6-3) and in the middle of the base (6-1).

5. The trimming machine according to claim 1, characterized in that, The bearing bushing (9) includes a bearing and a bearing chamber, the bearing chamber is fixedly connected to the inner housing (7), the bearing is sleeved on the cutter shaft (2), and the bearing is located in the bearing chamber. A stabilizer (14) that is snap-connected to the snap connector (8) is further provided at the top of the bearing bushing (9).

6. The trimming machine according to claim 1, wherein A screw seat (7-2) and a mating groove (7-1) adapted to the second inner housing are formed on the first inner housing.

7. The trimming machine according to claim 1, wherein A positioning nut (2-3) is provided at the bottom of the cutter shaft (2) by means of threaded connection.

8. The trimming machine according to claim 1, characterized in that The housing (1) is also provided with a battery holder (11), a control button (12) and an anti-misoperation button (13).

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