CN215394114U - Shield assembly and cutting machine - Google Patents

Abstract

The utility model relates to a shield assembly, which is used for a cutting machine, wherein the cutting machine comprises a machine shell, a saw blade and a motor for driving the saw blade to rotate, the motor is provided with an output shaft, a shaft sleeve is sleeved on the output shaft, the shield assembly comprises a cover body for accommodating the saw blade and an installation hoop connected to one side of the cover body, the installation hoop is provided with a protruding rib protruding from the inner wall in the radial direction, the shaft sleeve comprises an open slot recessed from the periphery in the radial direction, and the protruding rib is accommodated in the open slot; the cutting machine further comprises a locking mechanism, and the locking mechanism is provided with an unlocking position and a locking position. The anti-lock mechanism is assembled in a hoop type, the end part of the hoop is locked through the bolt, and the assembly process is simplified. Meanwhile, the outer wall of the shaft sleeve is provided with an open slot and the protruding rib position of the inner wall of the hoop is assembled, and the production cost is low. The locking mechanism has a simple structure, can realize the quick adjustment of the angle of the protective cover, has wider applicability and meets different cutting requirements.

Description

Shield assembly and cutting machine

[ technical field ]

The utility model relates to the field of cutting electric tools, in particular to a shield assembly and a cutting machine with the same.

[ background art ]

The cutting machine is used for realizing a cutting function and is widely applied to processing of various industrial materials. The cutting machine mainly comprises a driving motor, a shield assembly, a machine shell, an electric control system and the like. The guard assembly is typically provided with a shield to shield at least a portion of the cutting circumference of the saw blade from inadvertent cuts by the operator, as well as from splattering of swarf, coolant, etc. When the cutting tool is used, the holding angle of the shield assembly is inevitably required to be adjusted frequently due to the change of the operation position of an operator, and when the holding angle is adjusted, the shield and the motor output shaft are required to rotate relatively, so that an anti-lock mechanism is arranged between the shield assembly and the motor output shaft.

Chinese utility model patent CN21249678U discloses a waterproof guard shield of groover and cutting machine, is fixed with the locking staple bolt that can hold the shaft shoulder tightly in the outside of guard shield connecting seat through fixed screw, and the locking staple bolt is fixed on the shaft shoulder, and the protection casing shroud is on the slitting saw piece, guard shield connecting seat and shaft shoulder sealing connection, and it can adjust the protection casing angle at will to loosen the locking staple bolt. In this scheme, the locking staple bolt needs a plurality of screws of side-mounting at least, and the mounting hole space is narrow and small, and difficult operation, production maintenance is all inconvenient.

Accordingly, there is a need for an improved guard assembly and cutting machine that overcomes the deficiencies of the prior art.

[ contents of utility model ]

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the present invention to propose a shield assembly with simplified assembly process.

The technical scheme adopted by the utility model for solving the problems in the prior art is as follows: a shield assembly is used for a cutting machine and comprises a machine shell, a saw blade and a motor used for driving the saw blade to rotate, wherein the motor is provided with an output shaft, a shaft sleeve is sleeved on the output shaft, the shield assembly comprises a cover body used for accommodating the saw blade and an installation hoop connected to one side of the cover body, when the shield assembly is connected to the machine shell, at least part of the installation hoop is sleeved on the outer peripheral side of the shaft sleeve, the installation hoop is provided with a protruding rib protruding from the inner wall in the radial direction, the shaft sleeve comprises an open slot recessed from the outer periphery in the radial direction, and the protruding rib is accommodated in the open slot; the shield assembly also includes a locking mechanism having an unlocked position and a locked position, the shield assembly being rotatable relative to the housing when the locking mechanism is in the unlocked position, and the shield assembly being stationary relative to the housing when the locking mechanism is in the locked position.

The further improvement scheme is as follows: the mounting hoop comprises a first semi-ring body, a second semi-ring body and a locking part for locking or separating the first semi-ring body and the second semi-ring body.

The further improvement scheme is as follows: the installation staple bolt is open type ring body, the side that opens and shuts of ring body opens and is equipped with the bolt through-hole that runs through first half ring body and second half ring body, wear to be equipped with the bolt in the bolt through-hole, the tip threaded connection of bolt has the nut.

The further improvement scheme is as follows: the end that opens and shuts of ring body is provided with two engaging lugs of parallel, all is equipped with the bolt through-hole that runs through on two engaging lugs, wear to be equipped with the bolt in the bolt through-hole.

The further improvement scheme is as follows: a limiting gasket is arranged between the two connecting lugs.

The further improvement scheme is as follows: the side face of the first half ring body is fixedly connected with the cover body, and the protruding ribs are arranged on the inner wall of the second half ring body.

The further improvement scheme is as follows: the open slot and the protruding rib are in clearance fit.

The further improvement scheme is as follows: the locking mechanism comprises a guide rail extending along the outer edge of the cover body, a locking piece arranged on the guide rail and a connecting piece connected between the locking piece and the shell; the locking piece moves in the guide rail to drive the shell to pivot relative to the cover body.

The further improvement scheme is as follows: the radian of the extending of the open slot is consistent with that of the extending of the guide rail.

The utility model also provides a cutting machine with the shield assembly.

Compared with the prior art, the utility model has the following beneficial effects: the anti-lock mechanism between the shield component and the motor output shaft is assembled in a hoop type, the end part of the hoop is locked through a bolt, and the assembly process is simplified. Meanwhile, the outer wall of the shaft sleeve is provided with an open slot which is assembled with the convex rib on the inner wall of the hoop, so that the production cost is low. The locking mechanism has a simple structure, can realize the quick adjustment of the angle of the protective cover, has wider applicability and meets different cutting requirements.

[ description of the drawings ]

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings:

FIG. 1 is an exploded view of a shield assembly and corresponding cutter portion of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a side of the shield assembly;

FIG. 3 is a schematic view of the other side of the shroud assembly;

fig. 4 shows a cross-sectional view of the shield assembly.

The meaning of the reference symbols in the figures:

100. guard shield assembly 10, mounting hoop 11 and shield body

101. A first half ring body 102, a second half ring body 103 and a connecting lug

104. Bolt 105, nut 106, open slot

107. Convex rib 108, limiting gasket 20 and casing

30. Shaft sleeve 31, bearing 32 and bearing pressure plate

33. Gear 40, output shaft 41, output gear

50. Pressing plate 60, elastic pad 61 and mounting screw

70. Saw blade

[ detailed description of the utility model ]

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, which is an exploded view of a shield assembly and a corresponding cutting machine according to an embodiment of the present invention, the cutting machine includes a housing 20, a saw blade 70, a saw blade mounting assembly, a shield assembly 100, a transmission assembly, and the like. An output gear 41, a bearing pressure plate 32, a bearing 31 and a gear 33 in the transmission assembly are sequentially sleeved on an output shaft 40, and a shaft sleeve 30 is sleeved on the output shaft 40. The output shaft 40 is driven to rotate by the output power of the driving motor provided in the housing 20, and the power is transmitted to the saw blade 70 through the saw blade shaft to perform a cutting operation. The saw blade 70 is arranged at one end of the saw blade shaft through the mounting screw 61, the elastic pad 60 and the pressing plate 50, and the other end of the saw blade shaft can be directly connected with the output shaft through a gear, so that the saw blade shaft is driven to rotate by the motor. Of course, a reduction gear or the like may be provided between the output shaft and the saw blade shaft, which will not be described in detail herein.

Referring to fig. 2 and 3, which are schematic structural views illustrating the shroud assembly of the present invention, the shroud assembly 100 includes a shroud 11 capable of partially covering the saw blade 70 and a mounting hoop 10 connected to one side of the shroud 11, and when the shroud assembly 100 is connected to the housing 20 for assembly, the mounting hoop 10 is at least partially sleeved on the outer circumferential side of the shaft sleeve 30. Based on the improvement of the complex mechanism and assembly process of the locking hoop in the prior art, in the present embodiment, the structure for installing the hoop 10 is preferably an open-type ring body, which includes a first half-ring body 101, a second half-ring body 102, and a locking portion capable of locking or separating the first half-ring body 101 and the second half-ring body 102. After the first half-ring body 101 and the second half-ring body 102 are locked by the locking part, the first half-ring body and the second half-ring body are sleeved and pressed on the shaft sleeve 30, so that the locked installation hoop 10 and the shaft sleeve 30 cannot be radially separated.

Referring to fig. 4, in order to prevent the mounting anchor 10 and the shaft sleeve 30 from being axially separated, an opening groove 106 is formed in the outer wall of the shaft sleeve 30 along the circumferential direction, and a protruding rib 107 corresponding to the opening groove 106 is formed in the inner wall of the mounting anchor 10 along the circumferential direction. After the installation hoop 10 and the shaft sleeve 30 are assembled, the protruding ribs 107 are embedded into the open grooves 106 to form a clamping structure to form axial limiting, the structure is simple, and the processing is facilitated. The protruding ribs 107 and the open grooves 106 are in clearance fit, that is, when the mounting hoop 10 rotates relative to the shaft sleeve 30, the protruding ribs 107 are always positioned in the open grooves 106, so that the stability, safety and reliability of the utility model are improved.

As an embodiment, the width of the protruding rib 107 is 6.4cm to 6.8cm, and the thickness of the protruding rib 107 is 1.3cm to 1.5 cm; the width of the open slot 106 is 6.6cm-7.0cm, and the depth of the open slot 106 is 1.4cm-1.6 cm. The material of the protruding rib 107 may be a metal material such as Q235A, and the material of the protruding rib may also be set according to actual needs as long as it can ensure the axial limit strength during the engagement.

The locking portion of the mounting hoop 10 may take various forms according to the inventive concept of the present invention. As an implementation manner, a bolt through hole penetrating through the first half-ring body 101 and the second half-ring body 102 is opened at the opening and closing side of the hoop ring body, a bolt 104 can be inserted into the bolt through hole, a nut 105 is connected to the end of the bolt 104 through a thread, the nut 105 is screwed close to the bolt head to reduce the relative distance between the two half-ring bodies, and the installation hoop 10 is compressed to compress the shaft sleeve 30. Specifically, the end portions of the two half-ring bodies are respectively provided with connecting lugs 103 which are parallel to each other, the two connecting lugs 103 are respectively provided with a through bolt through hole, and a bolt 104 is arranged in the bolt through hole in a penetrating mode and fixed through a nut 105. Spacing gasket 108 that is provided with certain thickness according to actual need between two engaging lug 103 is used for adjusting the elasticity, plays the absorbing effect of buffering simultaneously at the output shaft during operation. The two ends of the mounting hoop 10 may also be connected by a snap connection or other known means.

As an embodiment, the first half ring 101 is used as a fixed end, and the side surface thereof is fixedly connected with the cover body; the second half-ring 102 is suspended as a movable end in the output shaft mounting area at the bottom of the cover. The projecting ribs 107 are provided on the inner wall of the second half-ring 102. The saw blade 70 is arranged on one side of the front cover of the casing 20, and the available space on the other side of the front part of the casing 20 far away from the saw blade 70 is larger, so that other structures can be conveniently arranged. In this embodiment, the mounting hoop 10 is disposed at the other side of the front portion of the housing 20 away from the saw blade 70, so as to facilitate assembly by an operator or an automated robot. The shield assembly 100 further includes a base plate attached to the bottom of the enclosure 11, and the saw blade 70 has a cutting portion protruding out of the base plate through which the saw blade 70 performs a cutting operation on a workpiece. The installation hoops 10 and the cutting parts of the saw blades 70 are positioned at two sides of the bottom plate, and the installation hoops 10 are installed at one side of the cover body 11 close to the bottom plate; the base plate is rotatable relative to the housing 11 to adjust the depth of the cutting portion of the saw blade 70 exposed from the housing 11, thereby indirectly adjusting the cutting depth of the cutting machine. The bolt through hole opening of the locking part of the mounting hoop 10 is upward, so that an operator or an automatic robot can conveniently wear the bolt 104 from top to bottom, and the working efficiency is improved.

As another possible implementation mode, the utility model further provides a cutting machine with the shield assembly, the cutting machine comprises a locking mechanism, the locking mechanism is provided with an unlocking position and a locking position, when the locking mechanism is in the unlocking position, the shield assembly can rotate relative to the machine shell, and an operator can freely adjust the operating angle of the shield; the shroud assembly is stationary relative to the chassis when the locking mechanism is in the locked position.

Specifically, the locking mechanism comprises an arc-shaped guide rail fixedly connected to one side of the cover body and extending along the outer edge of the cover body, a locking piece arranged on the guide rail and a connecting piece connected between the locking piece and the shell. The locking piece comprises a sliding block capable of sliding along the arc-shaped guide rail and a loose bolt in threaded connection with the sliding block, and when the sliding block moves in the guide rail, the shell is driven to pivot relative to the cover body. One end of the connecting piece is fixedly connected with the shell, and the other end of the connecting piece is connected on the elastic bolt in a penetrating way. When the bolt is screwed, the locking rod and the sliding block are clamped by the tightening bolt, namely the locking mechanism is in a locking position, and the cover body is static relative to the shell. When the bolt is unscrewed, the connecting piece is separated from the sliding block, namely the locking mechanism is positioned at the unlocking position, the protective cover assembly can rotate relative to the machine shell, and an operator operates the elastic bolt to move the sliding block to move in the guide rail, so that the machine shell is driven to pivot relative to the cover body, and the operation angle of the protective cover is freely adjusted.

As an example, the arc of the slot 106 of the sleeve is consistent with the arc of the rail.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A guard shield assembly is used for a cutting machine and comprises a machine shell, a saw blade and a motor used for driving the saw blade to rotate, wherein the motor is provided with an output shaft, and a shaft sleeve is sleeved on the output shaft; the shield assembly also includes a locking mechanism having an unlocked position and a locked position, the shield assembly being rotatable relative to the housing when the locking mechanism is in the unlocked position, and the shield assembly being stationary relative to the housing when the locking mechanism is in the locked position.

2. The shroud assembly of claim 1, wherein the mounting hoop includes a first half-ring, a second half-ring, and a locking portion that locks or unlocks the first half-ring and the second half-ring.

3. The shield assembly according to claim 2, wherein the mounting hoop is an open-type ring body, a bolt through hole penetrating through the first half-ring body and the second half-ring body is formed in the opening and closing side of the ring body, a bolt penetrates through the bolt through hole, and a nut is connected to the end of the bolt in a threaded manner.

4. The shield assembly according to claim 3, wherein the opening and closing end of the ring body is provided with two parallel connection lugs, the two connection lugs are provided with through bolt through holes, and bolts penetrate through the bolt through holes.

5. The shroud assembly of claim 4, wherein a spacing washer is disposed between the two engaging ears.

6. The shroud assembly of claim 2, wherein the side of the first half-ring is fixedly attached to the shroud body, and the raised ribs are disposed on an inner wall of the second half-ring.

7. The shroud assembly of claim 1, wherein said open slots and said projecting ribs are a clearance fit.

8. The shroud assembly of claim 1, wherein said locking mechanism includes a guide rail extending along an outer edge of the shroud body, a locking member mounted on said guide rail, and a connecting member connected between said locking member and said housing; the locking piece moves in the guide rail to drive the shell to pivot relative to the cover body.

9. The shield assembly of claim 8, wherein the arc through which the open slot extends is consistent with the arc through which the rail extends.

10. A cutting machine, characterized by comprising a shroud assembly according to any one of claims 1-9.

Images