A trimming machine

Abstract

A trimming machine includes a cutter shaft rotatably connected within a housing, and a motor electrically connected to the cutter shaft is located within the housing. A cutter holder is formed at the bottom of the cutter shaft. A gear control electrically connected to the motor is located on the housing, and a display screen electrically connected to the gear control is also located on the housing. A hollow base is located at the bottom of the housing, through which the cutter shaft extends downward. A downwardly extending limiting block is formed on one side of the base, and a limiting hole facing the cutter shaft is formed on the limiting block. Compared with the prior art, by setting the limiting block, a fixed connection between the cutter shaft and the housing can be achieved under the action of screws, thereby limiting the rotation of the cutter shaft and the milling cutter, which has better safety. At the same time, the setting of the snap-fit ​​component 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 snap-fit ​​component abuts against the outer housing to counteract the rotational force.

Description

Technical Field

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

[0002] The trimming machine is a motor-driven and highly mobile trimming equipment used for wood chamfering, metal trimming, strip edging, etc. Also known as a chamfering machine, it uses a cutter head to chamfer the edge of a wooden board. The edge of the wooden board can be trimmed into a corresponding shape according to the shape of the cutter head. It is usually used to trim right angles into rounded corners and edges, and is also used for proper polishing of wood. It is also widely used in the reinforcement of building beams, boards, columns, walls, etc., decoration, wall installation, brackets, railings, billboards, air conditioner outdoor units, guide rails, satellite receivers, elevators, steel structure workshops, etc.

[0003] Manual trimmers are handheld structures that are small and flexible and have a wide range of applications. They are mainly used for carving, grooving, trimming, chamfering, guiding arcs, grooving straight lines, milling through holes, or making manual corrections to areas that are difficult to process with large woodworking equipment. However, existing trimmers have some problems when in use. First, when the existing trimmers are processing wood, wood chips are likely to splash upward from the grooves of the milling cutter, which can easily cause wood chips to fly toward the user's body and face, which is not good for the user's operating experience and safety; second, different milling speeds of the trimmer are required for different materials, and it is difficult to directly observe the current milling speed level in the existing technology; third, when the trimmer is not working, it is difficult to clamp and position the trimmer cutter with the existing technology, so there is a possibility of mis-opening, which poses certain safety hazards. Summary of the invention

[0004] The present invention aims to overcome the defects in the prior art and provide a trimming machine with a display screen which is safe, reliable and convenient for chip removal.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: a trimmer, comprising a shell and a knife shaft rotatably connected in the shell, and a motor electrically connected to the knife shaft is provided in the shell, and a knife seat is formed at the bottom of the knife shaft; a gear controller electrically connected to the motor is provided on the shell, and a display screen electrically connected to the gear controller is provided on the shell; a base with a hollow structure is provided at the bottom of the shell, and the knife shaft extends downward through the base, and a limit block extending downward is formed on one side of the base, a limit hole set toward the knife shaft is formed on the limit block, and a connecting hole matched with the limit hole is formed on the knife shaft, and a screw set toward the knife shaft is provided on the limit block; a fan is provided in the shell, the fan rotates synchronously with the knife shaft, and the fan is located above the base; a locking device sleeved on the knife shaft is connected to the bottom of the base, and a locking cylinder and a telescopic rod connected to the locking device are provided on the locking device, and the fan is located on the moving path of the telescopic rod.

[0006] As a preferred solution of the present invention, the base is a circular ring structure, and connecting ribs connected to the inner wall of the shell are formed at the edge of the base, and air outlets are formed between adjacent connecting ribs and in the middle of the base.

[0007] As a preferred solution of the present invention, the locking device includes a connecting plate and a locking plate, the connecting plate is connected to the bottom of the base, the locking plate is connected to the bottom of the connecting plate, and the locking cylinder is located on the connecting plate.

[0008] As a preferred solution of the present invention, the connecting piece and the locking piece are U-shaped structures, the ends of the U-shaped structure are formed with grooves adapted to the limit block, and the ends of the U-shaped structure are simultaneously against two sides of the limit block.

[0009] As a preferred solution of the present invention, a downwardly protruding connecting head is formed at the bottom of the base, a connecting groove matched with the connecting head is formed on the connecting plate, a matching seat protruding upward is formed on the locking plate, and interconnected fastening holes are formed on the connecting head, the connecting groove and the matching seat.

[0010] As a preferred solution of the present invention, a support seat is formed at the end of the connecting piece, and a loading groove for loading the locking cylinder is formed in the support seat.

[0011] As a preferred solution of the present invention, a matching groove matched with the matching seat is formed at the bottom of the connecting piece, and a first positioning groove and a second positioning groove are also formed at the bottom of the connecting piece.

[0012] As a preferred solution of the present invention, a first positioning protrusion aligned with the first positioning groove and a second positioning protrusion aligned with the second positioning groove are formed on the locking plate.

[0013] As a preferred solution of the present invention, a threaded positioning nut is provided at the bottom of the knife shaft.

[0014] As a preferred solution of the present invention, the housing is also connected to an external cable and a control switch.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by arranging a limit block under the base and forming a connecting hole connected to the limit block on the cutter shaft, when the limit block is connected to the connecting hole by a screw, the cutter shaft can be locked, thereby locking the milling cutter; at the same time, under the action of the telescopic rod, the locking of the cutter shaft is achieved by limiting the rotation of the fan, thereby locking the milling cutter, ensuring the anti-accidental opening of the milling cutter in the locked state. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

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

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

[0019] Figure 4 is a schematic diagram of the connection between the base and the locking device;

[0020] Figure 5 It is a schematic diagram of the structure of the base;

[0021] Figure 6 It is a schematic diagram of the connection between the knife shaft and the locking device;

[0022] Figure 7 is a schematic diagram of the structure of the locking device;

[0023] Figure 8 It is a structural schematic diagram of the connecting piece;

[0024] Fig. 9 1 is a schematic diagram of the structure of the locking plate;

[0025] Figure markings: shell 1, knife shaft 2, connecting hole 2-1, motor 3, gear controller 4, knife seat 5, display screen 6, control switch 7, external cable 8, positioning nut 9, base 10, connector 10-1, limit block 11, limit hole 11-1, screw 11-2, connecting rib 12, fan 13, telescopic rod 14, locking device 15, connecting plate 16, connecting groove 16-1, matching groove 16-2, supporting seat 16-3, loading groove 16-4, locking plate 17, matching seat 17-1, first positioning protrusion 17-2, second positioning protrusion 17-3. DETAILED DESCRIPTION

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

[0027] like Figure 1-9As shown, a trimmer comprises a housing 1 and a knife shaft 2 rotatably connected to the housing 1, wherein a motor 3 electrically connected to the knife shaft 2 is provided in the housing 1, and a knife seat 5 is formed at the bottom of the knife shaft 2; a gear controller 4 electrically connected to the motor 3 is provided on the housing 1, and a display screen 6 electrically connected to the gear controller 4 is provided on the housing 1; a base 10 with a hollow structure is provided at the bottom of the housing 1, the knife shaft 2 extends downward through the base 10, a limit block 11 extending downward is formed on one side of the base 10, and a limit block 11 is formed on the limit block 11 A limiting hole 11-1 is set toward the knife shaft 2, and a connecting hole 2-1 matched with the limiting hole 11-1 is formed on the knife shaft 2, and a screw 11-2 set toward the knife shaft 2 is provided on the limiting block 11; a fan 13 is provided in the shell 1, and the fan 13 rotates synchronously with the knife shaft 2, and the fan 13 is located above the base 10; a locking device 15 connected to the knife shaft 2 is connected below the base 10, and a locking cylinder and a telescopic rod 14 connected to the locking device 15 are provided, and the fan 13 is located on the moving path of the telescopic rod 14.

[0028] The cutter shaft 2 is arranged along the length direction of the shell 1. The shell 1 is a cylindrical structure. The milling cutter can be installed on the cutter seat 5 to facilitate the operator to grab it. The gear controller 4 adjusts the current input to the motor 3, thereby adjusting the operating power of the motor 3, controlling the rotation rate of the cutter shaft 2, and controlling the cutting rate of the milling cutter.

[0029] The screw 11-2 can pass through the limiting hole 11-1 and be connected to the cutter shaft 2. Under the action of the screw 11-2, a fixed connection between the base 10 and the cutter shaft 2 can be achieved, thereby achieving a fixed connection between the base 10 and the cutter shaft 2, thereby limiting the rotation of the cutter shaft 2 and clamping the milling cutter.

[0030] The fan 13 rotates synchronously with the cutter shaft 2. A key and a key slot compatible with the cutter shaft 2 may be provided in the middle of the fan 13. When the telescopic rod 14 is in an extended state, the telescopic rod 14 is located between adjacent leaves of the fan 13. The telescopic rod 14 limits the rotation of the fan 13, thereby limiting the rotation of the cutter shaft 2 and clamping the milling cutter.

[0031] The display screen 6 is connected to the gear controller 4 via a wire, and the current gear level of the gear controller 4 is displayed on the display screen 6. The motor 3 is electrically connected to the knife shaft 2, and the motor 3 drives the rotation of the knife shaft 2. The motor 3 is connected to the gear controller 4 via a wire.

[0032] The base 10 is a circular ring structure, and a connecting rib 12 connected to the inner wall of the shell 1 is formed at the edge of the base 10, and an air outlet is formed between adjacent connecting ribs 12 and in the middle of the base 10. The base 10, the shell 1 and the connecting rib 12 are all made of plastic, and the base 10, the shell 1 and the connecting rib 12 are integrally formed by injection molding. The base 10 is arranged parallel to the fan 13. Under the action of the fan 13, a downward airflow is formed at the air outlet. The fan 13 blows the wood chips formed at the milling cutter to prevent the wood chips from flying toward the user's body and face, so that the user has a better operating experience and safety. The number and size of the connecting ribs 12 are set according to actual needs, and the connecting ribs 12 are arranged circumferentially along the edge of the base 10.

[0033] The locking device 15 includes a connecting piece 16 and a locking piece 17. The connecting piece 16 is connected to the bottom of the base 10, and the locking piece 17 is connected to the bottom of the connecting piece 16. The locking cylinder is located on the connecting piece 16. A hollow structure is formed in the middle of the connecting piece 16 and the locking piece 17, and the hollow structure size of the connecting piece 16 and the locking piece 17 is not less than the hollow size of the base 10. The knife shaft 2 passes through the middle of the connecting piece 16 and the locking piece 17. The connecting piece 16 and the locking piece 17 are sleeved on the outside of the knife shaft 2, and the connecting piece 16 and the locking piece 17 do not interfere with the knife shaft 2. The connecting piece 16 and the locking piece 17 are fixedly connected to the bottom of the base 10.

[0034] The connecting piece 16 and the locking piece 17 are U-shaped structures, and a groove adapted to the limit block 11 is formed at the end of the U-shaped structure, and the end of the U-shaped structure is simultaneously against the two sides of the limit block 11. The opening of the U-shaped structure is the limit block 11, and the opening of the U-shaped structure is against the two sides of the limit block 11.

[0035] The openings of the U-shaped connecting piece 16 and the locking piece 17 are simultaneously against the two adjacent side walls of the limit block 11, so that the connecting piece 16 and the locking piece 17 have better stability. Since the locking device 15 is provided with a telescopic rod 14, when the fan 13 is turned on, it will hit the telescopic rod 14, thereby transmitting the torque to the connecting piece 16 and the locking piece 17. Under the action of the limit block 11, the rotation of the connecting piece 16 and the locking piece 17 is limited, thereby ensuring the stability of the telescopic rod 14.

[0036] A downwardly protruding connector 10-1 is formed at the bottom of the base 10, a connecting groove 16-1 adapted to the connector 10-1 is formed on the connecting plate 16, a mating seat 17-1 protruding upward is formed on the locking plate 17, and interconnected fastening holes are formed on the connector 10-1, the connecting groove 16-1 and the mating seat 17-1.

[0037] When the connecting piece 16 is connected to the bottom of the base 10, the connecting head 10-1 is embedded in the connecting groove 16-1, and at least two connecting heads 10-1 are provided on the base 10. The number of connecting grooves 16-1 is consistent with the number of connecting heads 10-1. Under the action of the connecting heads 10-1 and the connecting grooves 16-1, the connecting piece 16 is horizontally positioned on the base 10.

[0038] Similarly, a matching groove 16-2 that matches the matching seat 17-1 is formed at the bottom of the connecting piece 16. When the locking piece 17 is connected to the bottom of the connecting piece 16, the matching seat 17-1 is embedded in the matching groove 16-2, and at least two matching seats 17-1 are provided on the locking piece 17. The number of matching seats 17-1 is consistent with the number of matching grooves 16-2. Under the action of the matching seats 17-1 and the matching grooves 16-2, the horizontal positioning of the locking piece 17 on the connecting piece 16 is achieved.

[0039] The connecting head 10-1, the connecting groove 16-1 and the matching seat 17-1 are located on a straight line. Under the action of the screw, the screw passes through the matching seat 17-1 and the connecting groove 16-1 in turn and connects to the connecting head 10-1, thereby realizing a fixed connection between the base 10, the locking plate 17 and the connecting plate 16.

[0040] A support seat 16-3 is formed at the end of the connecting piece 16, and a loading groove 16-4 for loading the locking cylinder is formed in the support seat 16-3. The support seat 16-3 is a vertical structure, and one side of the support seat 16-3 is against the outer wall of the base 10, so that the support seat 16-3 and the base 10 have better stability. At the same time, an oblique brace is formed at the connection between the support seat 16-3 and the connecting piece 16, so that the support seat 16-3 and the connecting piece 16 have better stability and firmness.

[0041] A first positioning groove and a second positioning groove are formed at the bottom of the connecting piece 16 , and a first positioning protrusion 17 - 2 aligned with the first positioning groove and a second positioning protrusion 17 - 3 aligned with the second positioning groove are formed on the locking piece 17 .

[0042] When the locking plate 17 is connected to the bottom of the connecting plate 16, the first positioning protrusion 17-2 and the second positioning protrusion 17-3 are respectively embedded in the first positioning groove and the second positioning groove, and at least two first positioning protrusions 17-2 and second positioning protrusions 17-3 are provided on the locking plate 17, and the number of the first positioning grooves and the second positioning grooves is consistent with the number of the first positioning protrusions 17-2 and the second positioning protrusions 17-3. Under the action of the first positioning protrusion 17-2, the second positioning protrusion 17-3, the first positioning groove and the second positioning groove, the horizontal positioning of the locking plate 17 on the connecting plate 16 is achieved.

[0043] A threaded positioning nut 9 is provided at the bottom of the cutter shaft 2. The positioning nut 9 abuts against the bottom of the milling cutter. An external thread matching the positioning nut 9 is formed at the bottom of the cutter shaft 2. Under the action of the positioning nut 9, the stability of the milling cutter is ensured.

[0044] The housing 1 is also connected with an external cable 8 and a control switch 7. The control switch 7 is used to control the switch of the motor 3. The external cable 8 is connected with an external power source.

[0045] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may 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.

[0046] Although the following terms are used more frequently in this article: housing 1, knife shaft 2, motor 3, gear controller 4, knife seat 5, display screen 6, control switch 7, external cable 8, positioning nut 9, base 10, connector 10-1, limit block 11, limit hole 11-1, screw 11-2, connecting rib 12, fan 13, telescopic rod 14, locking device 15, connecting piece 16, connecting groove 16-1, matching groove 16-2, supporting seat 16-3, loading groove 16-4, locking piece 17, matching seat 17-1, first positioning protrusion 17-2, second positioning protrusion 17-3, etc., 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 restrictions is contrary to the spirit of the present invention.

Claims

1. A trimming machine, comprising a housing (1) and a knife shaft (2) rotatably connected to the housing (1), wherein a motor (3) electrically connected to the knife shaft (2) is arranged in the housing (1), and a knife seat (5) is formed at the bottom of the knife shaft (2); characterized in that: The housing (1) is provided with a gear controller (4) electrically connected to the motor (3), and the housing (1) is provided with a display screen (6) electrically connected to the gear controller (4); a base (10) with a hollow structure is provided at the bottom of the housing (1), the knife shaft (2) passes through the base (10) and extends downward, a stop block (11) extending downward is formed on one side of the base (10), a stop hole (11-1) arranged toward the knife shaft (2) is formed on the stop block (11), and a stop hole (11-1) is formed on the knife shaft (2) and is in contact with the stop hole (11-1). ) is provided with a connecting hole (2-1) adapted to the blade shaft (2), and a screw (11-2) arranged toward the blade shaft (2) is provided on the limit block (11); a fan (13) is provided in the housing (1), the fan (13) rotates synchronously with the blade shaft (2), and the fan (13) is located above the base (10); a locking device (15) sleeved on the blade shaft (2) is connected below the base (10), a locking cylinder and a telescopic rod (14) connected to each other are provided on the locking device (15), and the fan (13) is located on the moving path of the telescopic rod (14); The base (10) is a circular ring structure, and a connecting rib (12) connected to the inner wall of the shell (1) is formed at the edge of the base (10), and an air outlet is formed between adjacent connecting ribs (12) and in the middle of the base (10); The locking device (15) comprises a connecting piece (16) and a locking piece (17), wherein the connecting piece (16) is connected to the bottom of the base (10), the locking piece (17) is connected to the bottom of the connecting piece (16), and the locking cylinder is located on the connecting piece (16); The connecting piece (16) and the locking piece (17) are U-shaped structures, and grooves matching the limit block (11) are formed at the ends of the U-shaped structures, and the ends of the U-shaped structures abut against two surfaces on both sides of the limit block (11) at the same time; The bottom of the base (10) is formed with a connecting head (10-1) protruding downward, the connecting piece (16) is formed with a connecting groove (16-1) adapted to the connecting head (10-1), the locking piece (17) is formed with a matching seat (17-1) protruding upward, and the connecting head (10-1), the connecting groove (16-1) and the matching seat (17-1) are formed with interconnected fastening holes; A support seat (16-3) is formed at the end of the connecting piece (16), and a loading groove (16-4) for loading the locking cylinder is formed in the support seat (16-3); The bottom of the connecting piece (16) is formed with a matching groove (16-2) matched with the matching seat (17-1), and the bottom of the connecting piece (16) is also formed with a first positioning groove and a second positioning groove; The locking plate (17) is formed with a first positioning protrusion (17-2) aligned with the first positioning groove, and a second positioning protrusion (17-3) aligned with the second positioning groove.

2. The trimming machine according to claim 1, characterized in that: A threaded positioning nut (9) is provided at the bottom of the knife shaft (2).

3. The trimming machine according to claim 1, characterized in that: The housing (1) is also connected to an external cable (8) and a control switch (7).

Images