CN117340672A

CN117340672A - Liftable guard gate and lathe

Info

Publication number: CN117340672A
Application number: CN202311332635.7A
Authority: CN
Inventors: 肖辉; 吴海东; 贺雨霆
Original assignee: Kunshan League Automechanism Co Ltd
Current assignee: Kunshan League Automechanism Co Ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-01-05

Abstract

The invention provides a lifting protective door and a machine tool, wherein the lifting protective door comprises: the frame comprises a cross beam arranged along the horizontal direction and a longitudinal beam vertically connected with the cross beam; the door body is arranged on the frame in a lifting manner; the driving device comprises a nitrogen spring, a swing rod, a front guide wheel, a middle guide wheel, a rear guide wheel set and two synchronous belts: the front guide wheel is arranged on the cross beam, the middle guide wheel is arranged on the longitudinal beam, and the rear guide wheel group is positioned between the front guide wheel and the driven door body in the extending direction of the cross beam; the nitrogen spring and the swing rod are respectively provided with a fixed end and a free end, the fixed ends of the nitrogen spring and the swing rod are respectively hinged with the cross beam, and the free end of the nitrogen spring is hinged with the middle part of the swing rod; one end of each of the two synchronous belts is fixed on the cross beam, and the other ends of the two synchronous belts are respectively connected with one end of the door body, which is far away from the frame in the vertical direction, by guiding the free ends of the swing rods, the front guide wheels, the middle guide wheels and the rear guide wheels in sequence; the guiding directions of the two synchronous belts through the free end of the swing rod, the front guide wheel and the rear guide wheel set are the same, and the guiding directions of the two synchronous belts through the middle guide wheel set are opposite.

Description

Liftable guard gate and lathe

Technical Field

The invention belongs to the technical field of machine tool equipment, and particularly relates to a lifting protective door and a machine tool.

Background

Along with the continuous development of society, various automatic machine tools are generated, and in the production and processing of materials, the material splashing is usually required to be avoided, or isolation treatment such as dust prevention is required to be carried out, and the machine tools are generally provided with transparent safety protection doors, so that the production process can be monitored at any time while the production safety is ensured. The existing safety protection door is complex in structure and needs precise driving and control, and mainly comprises a lifting type, a dismounting type or a push-pull lifting type; the lifting type design requires a plurality of distances on the periphery of the machine tool, and the actual production field occupies a large area; the detachable design can play a good role in protection, but is extremely inconvenient to actually use; the push-pull lifting type door body is driven to lift or push laterally by adopting a motor or a driving air cylinder as a power source, and the falling problem is not needed to be considered in the design of lateral pushing, but when the lifting design is carried out, once the motor is in fault or the driving air cylinder is accidentally disconnected, the door body falls, so that safety accidents are very easy to occur.

Disclosure of Invention

In view of the problems existing in the existing machine tool equipment technology, the main purpose of the invention is to provide a lifting protective door and a machine tool, wherein the lifting protective door has a simple integral structure and is easy to assemble to the machine tool for use; the lifting process is stable, and meanwhile, the utilization rate of the production field can be effectively ensured.

The aim of the invention is achieved by the following technical scheme:

the invention provides a liftable protective door, comprising:

the frame comprises a cross beam arranged along the horizontal direction and a longitudinal beam vertically connected with the cross beam;

the door body is arranged on the frame in a lifting manner;

the driving device comprises a nitrogen spring, a swing rod, a front guide wheel, a middle guide wheel, a rear guide wheel set and two synchronous belts; wherein,

the front guide wheel is arranged on the cross beam, the middle guide wheel is arranged on the longitudinal beam, and the rear guide wheel group is arranged between the front guide wheel and the driven door body in the extending direction of the cross beam;

the nitrogen spring and the swing rod are respectively provided with a fixed end and a free end, the fixed ends of the nitrogen spring and the swing rod are respectively hinged with the cross beam, and the free end of the nitrogen spring is hinged with the middle part of the swing rod;

one ends of the two synchronous belts are fixed on the cross beam, and are guided by the free end, the front guide wheel, the middle guide wheel and the rear guide wheel set of the swing rod in sequence, so that the other ends of the two synchronous belts are respectively connected with one end, far away from the frame, of the door body in the vertical direction;

the guiding directions of the two synchronous belts through the free end of the swing rod, the front guide wheel and the rear guide wheel group are the same, and the guiding directions of the two synchronous belts through the middle guide wheel are opposite.

As further description of the technical scheme, the free end of the swing rod, the front guide wheel and the middle guide wheel all comprise two grooves distributed along the vertical direction so as to guide the two synchronous belts respectively.

As a further description of the above technical solution, the rear guide wheel set includes two first rear guide wheels and two second rear guide wheels disposed downstream of the first rear guide wheels; wherein,

the two first rear guide wheels respectively guide the two synchronous belts along the horizontal direction;

the two second rear guide wheels respectively guide the two synchronous belts along the vertical direction.

As a further description of the above technical solution, the two first rear guide wheels are respectively disposed on the beam where the front guide wheel is located and the beam opposite to the front guide wheel;

the two second rear guide wheels are respectively arranged at the joint of the cross beam and the longitudinal beam.

As a further description of the above technical solution, the door body includes two edges along the extending direction of the longitudinal beam, and a strap portion is respectively disposed at a side of the bottom of the two edges toward the cross beam to be connected with the other ends of the two synchronous belts.

As a further description of the above technical solution, the nitrogen spring includes a cylinder and a plunger rod connected to the cylinder; wherein,

one end of the cylinder barrel, which is away from the plunger rod, is a fixed end, and one end of the plunger rod, which is away from the cylinder barrel, is a free end; or (b)

The one end that the cylinder deviates from the plunger rod is the free end, the one end that the plunger rod deviates from the cylinder is the stiff end.

As a further description of the above technical solution, the main body of the door body is made of an acrylic plate.

The invention also provides a machine tool, which comprises a plurality of lifting protective doors, wherein the frames of the lifting protective doors are arranged at the top of the machine tool, and the extension direction of longitudinal beams of the frames is the same as the length direction of the machine tool;

the door bodies of the lifting protective doors are oppositely arranged at two sides of the machine tool in pairs;

the driving devices connected with the door bodies, which are arranged on two sides of the machine tool in a pairwise opposite mode, are symmetrical relative to the center of the frame.

As a further description of the above technical solution, the top of the machine tool is further provided with a top door, and the upper end surface of the top door is provided with a plurality of first locking pieces along the length direction of the machine tool;

the upper end of the door body of each lifting protective door is provided with a second locking piece, and each second locking piece is arranged in one-to-one correspondence with the first locking piece in the vertical direction.

As a further description of the above technical solution, an operation display including a tri-color lamp is further provided on one side of the machine tool, and the operation display is electrically connected to the driving device, the first locking member and/or the second locking member, respectively.

By the technical scheme, the invention has the outstanding effects that:

the lifting protective door provided by the invention is matched with the nitrogen spring, the swing rod and the guide wheels which are arranged on the frame, so that the door body can ascend or descend relative to the frame along the vertical direction by synchronously pulling the two synchronous belts, and the lifting protective door has a simple integral structure and is easy to assemble and use;

the lifting protective door provided by the invention adopts a lifting mode, so that when the protective door is arranged on an actual machine tool, the production and maintenance of other machine tools are not influenced in the lifting process, and the actual utilization rate of a production field is effectively ensured;

the lifting protective door provided by the invention adopts the nitrogen spring as a power source of the driving device, and the expansion and contraction actions of the nitrogen spring are mainly realized due to pressure difference, so that the descending and ascending processes of the door body can be effectively ensured to be smoothly carried out, the condition of sudden falling can not occur, and the production safety is ensured.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a structure of a protective door of a lifting door in a closed state when the protective door is assembled on a machine tool according to an embodiment of the invention;

FIG. 2 is a schematic view of a structure of a protective door of a lifting door in an open state when the protective door is assembled on a machine tool according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an assembly structure of a lifting protective door according to an embodiment of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at A;

fig. 5 is a partial schematic view of fig. 4.

Reference numerals:

11. a cross beam; 12. a longitudinal beam; 2. a door body; 21. a strap portion; 31. a nitrogen spring; 311. a cylinder; 312. a plunger rod; 32. swing rod; 33. a front guide wheel; 34. a middle guide wheel; 4. a synchronous belt; 51. a first rear guide wheel; 52. a second rear guide wheel; 6. a machine tool; 61. a top door; 71. a first locking member; 72. a second locking member; 8. a tri-color lamp.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or component to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present invention will be described in terms of its overall structure.

Referring to fig. 1 to 5, the present invention discloses a lifting protective door, which comprises:

a frame including a cross member 11 disposed in a horizontal direction and a longitudinal beam 12 vertically connected to the cross member 11;

the door body 2 is arranged on the frame in a lifting manner;

the driving device comprises a nitrogen spring 31, a swing rod 32, a front guide wheel 33, a middle guide wheel 34, a rear guide wheel group and two synchronous belts 4; wherein,

the front guide wheel 33 is arranged on the cross beam 11, the middle guide wheel 34 is arranged on the longitudinal beam 12, and the rear guide wheel set is arranged between the front guide wheel 33 and the driven door body 2 in the extending direction of the cross beam 11;

the nitrogen spring 31 and the swing rod 32 are respectively provided with a fixed end and a free end, the fixed ends of the nitrogen spring 31 and the swing rod 32 are respectively hinged with the cross beam 11, and the free end of the nitrogen spring 31 is hinged with the middle part of the swing rod 32;

one ends of the two synchronous belts 4 are fixed on the cross beam 11, and are guided by the free end of the swing rod 32, the front guide wheel 33, the middle guide wheel 34 and the rear guide wheel set in sequence, so that the other ends of the two synchronous belts are respectively connected with one end, far away from the frame, of the door body 2 in the vertical direction;

the guiding directions of the two synchronous belts 4 through the free ends of the swing rods 32, the front guide wheels 33 and the rear guide wheel groups are the same, and the guiding directions of the two synchronous belts through the middle guide wheels 34 are opposite.

By means of the above structure, one ends of the two synchronous belts 4 are fixed on the cross beam 11 comprised by the frame, the other ends of the two synchronous belts are connected with one end of the door body 2 far away from the frame in the vertical direction, the middle parts of the two synchronous belts are guided by the free ends of the swing rods 32, the front guide wheels 33, the middle guide wheels 34 and the rear guide wheel groups in sequence, meanwhile, the free ends of the nitrogen springs 31 are hinged with the middle parts of the swing rods 32 respectively, when the door body 2 needs to be controlled to ascend or descend relative to the frame in the vertical direction, the free ends of the door body 2 are correspondingly far away from or near the fixed ends of the nitrogen springs 31, the swing rods 32 are driven to swing relative to the cross beam 11 by the fixed ends of the swing rods, and therefore the length difference generated between the free ends of the nitrogen springs 31 and the fixed ends of the swing rods 32 is converted into the height difference generated by the guide wheels of the free ends of the swing rods 32 and the guide functions of the swing rods. The front guide wheel 33 is disposed on the cross beam 11, the middle guide wheel 34 is disposed on the longitudinal beam 12, the rear guide wheel set is disposed between the front guide wheel 33 and the driven door body 2 in the extending direction of the cross beam 11 to match the direction of guiding the two synchronous belts 4, the guiding directions of the two synchronous belts 4 at the free ends of the swing rod 32, the front guide wheel 33 and the rear guide wheel set are the same, and the guiding directions of the two synchronous belts 4 at the middle guide wheel 34 are opposite, so that the parts of the two synchronous belts 4 at the downstream of the middle guide wheel 34 can be respectively guided to the rear guide wheel set, and then are connected with one end of the door body 2 away from the frame through the rear guide wheel set in a one-to-one correspondence.

Therefore, only by the cooperation of the nitrogen spring 31, the swing rod 32 and the guide wheels arranged on the frame, the two synchronous belts 4 can drive the door body 2 to ascend or descend relative to the frame along the vertical direction, and the whole structure is simple and easy to assemble and use; the protective door is arranged on the actual machine tool 6 in a lifting manner, so that the production and maintenance of other machine tools 6 are not affected in the lifting process, and the actual utilization rate of the production area is effectively ensured; in addition, the liftable protection door adopts the nitrogen spring 31 as a power source of a driving device, and the telescopic action of the nitrogen spring 31 is mainly realized due to pressure difference, so that the descending and ascending processes of the door body 2 can be effectively ensured to be smoothly carried out, the condition of sudden falling can not occur, and the production safety is ensured.

Referring to fig. 3 to 5, in this embodiment, the extending direction of the cross beam 11 is defined as the front-rear direction, the extending direction of the longitudinal beam 12 is defined as the left-right direction, the frame is assembled by two cross beams 11 and two longitudinal beams 12, the front side and the rear side of the frame can be respectively provided with a door body 2 in a liftable manner along the vertical direction, and each door body 2 is driven by a corresponding driving device so as to be capable of descending or ascending along the vertical direction relative to the frame. The corresponding driving device is based on the door body 2 at the rear side: the fixed ends of the nitrogen spring 31 and the swing rod 32 are hinged on the left cross beam 11, and the free end of the nitrogen spring 31 is positioned on the right side of the fixed end and hinged with the middle part of the swing rod 32; the front guide wheel 33 is also provided on the left-hand cross member 11, and is located behind the fixed end of the nitrogen spring 31, while the side member 12 for mounting the middle guide wheel 34 is located behind the front guide wheel 33. One ends of two synchronous belts 4 (one is shown by a dotted line and one is shown by a solid line) are fixed on the cross beam 11 positioned between the front guide wheel 33 and the fixed end of the nitrogen spring 31, extend to the right front, bypass the free end of the swing rod 32 anticlockwise, extend to the left rear, bypass the front guide wheel 33 clockwise, guide the front guide wheel 33 to the downstream rear guide wheel group, and further connect the two synchronous belts 4 with the bottom of the door body 2, so as to pull the door body 2 to lift.

Referring to fig. 3 to 4, in particular, in this embodiment, the fixed end of the swing rod 32 is hinged to the cross beam 11, and the free end of the swing rod is also wheel-shaped, which is the same as the front guide wheel 33 and the middle guide wheel 34, and each of the swing rod and the middle guide wheel includes two grooves distributed along the vertical direction, so that the two synchronous belts 4 can be guided respectively, the situation that the two synchronous belts 4 are wound by a wire when the traction guiding action is applied is avoided, and the guiding effectiveness of the two synchronous belts 4 is ensured. For example, in this embodiment, the synchronous belt 4 is routed in the groove above by the solid line, the synchronous belt 4 is routed in the groove below by the dotted line, and the solid-dotted line is only used for reference of the routing directions of the two synchronous belts 4, and the materials of the two synchronous belts 4 are the same. Preferably, in this embodiment, the wheel bodies of the free end, the front guide wheel 33, and the middle guide wheel 34 of the swinging rod 32 are rotatably connected with the fixed core shaft thereof, and the two grooves extend along the self circumferential direction to form a ring shape, so that the nitrogen spring 31 stretches to drive the swinging rod 32 to rotate around the fixed end and the length of the swinging rod 32 as the radius, and the free end, the front guide wheel 33, and the middle guide wheel 34 of the swinging rod 32 can also rotate to a certain extent relative to the axis of the swinging rod 32, thereby ensuring the smoothness of guiding the two synchronous belts 4.

Referring to fig. 3 to 5, in particular, in this embodiment, the rear guide wheel set includes two first rear guide wheels 51 and two second rear guide wheels 52 disposed downstream of the first rear guide wheels 51; wherein, the two first rear guide wheels 51 respectively guide the two synchronous belts 4 along the horizontal direction; the two second rear guide wheels 52 guide the two synchronous belts 4 along the vertical direction respectively, so that the other ends of the two synchronous belts 4 can be connected with the bottom of the door body 2 respectively. More specifically, the two first rear guide wheels 51 are respectively disposed on the cross beam 11 where the front guide wheel 33 is located and the cross beam 11 opposite to the front guide wheel 33; the two second rear guide wheels 52 are respectively disposed at the connection parts of the cross beam 11 and the longitudinal beam 12. Therefore, the middle guide wheel 34 is located between the two first rear guide wheels 51 in the left-right direction, so that after two synchronous belts 4 extend from the front guide wheel 33 to the middle guide wheel 34 to the right and back, one synchronous belt 4 (indicated by a solid line) is led by the middle guide wheel 34 anticlockwise, then extends to the left side to the first rear guide wheel 51 located at the left side cross beam 11, is led to the second rear guide wheel 52 behind the first rear guide wheel 51, and is led to the end of the door body 2 away from the frame from top to bottom again by the second rear guide wheel 52; the other timing belt 4 (indicated by the broken line) is guided clockwise by the middle guide pulley 34 and then is guided by the first rear guide pulley 51 extending from the side to the right cross member 11 and then is guided by the second rear guide pulley 52 extending rearward from the first rear guide pulley 51, and the second rear guide pulley 52 is guided from top to bottom to the end of the door body 2 away from the frame. Therefore, when the nitrogen spring 31 stretches, the swing rod 32 is driven to swing, and the plurality of guide wheels synchronously pull the two synchronous belts 4 to apply force to two sides of the bottom of the door body 2, so that the door body 2 can be smoothly and stably driven to ascend or descend. It should be understood that the lengths of the two synchronous belts 4 are determined by the respective traction paths, and the lengths of the two synchronous belts 4 may be the same or different, for example, in this embodiment, the synchronous belt 4 that pulls the door body 2 on the rear side is obviously longer than the synchronous belt 4 that is illustrated by the solid line.

Referring to fig. 1 to 5, in particular, in the present embodiment, the door body 2 has two edges in the left-right direction, and the bottom inner sides (the side facing the beam 11) of the two edges are respectively provided with a binding band portion 21, so as to be respectively connected to the other ends of the two synchronous belts 4 guided by the rear guide wheel set.

Specifically, in the present embodiment, the nitrogen spring 31 includes a cylinder 311 and a plunger rod 312 connected to the cylinder 311; wherein, the end of the cylinder 311 away from the plunger rod 312 is hinged with the cross beam 11 through the hinge assembly, and the end of the plunger rod 312 away from the cylinder 311 is hinged with the swing rod 32, so that the expansion and contraction action of the nitrogen spring 31 can be utilized to draw the door body 2 to ascend or descend. Of course, in other embodiments, the end of the cylinder 311 away from the plunger rod 312 may be hinged to the middle of the swing rod 32 as a free end, and the end of the plunger rod 312 away from the cylinder 311 may be hinged to the cross beam 11 as a fixed end, so that the swing rod 32 is forced to swing by using the expansion and contraction effect of the nitrogen spring 31, so that the door body 2 may be driven to perform the lifting action by pulling the two synchronous belts 4.

Specifically, in this embodiment, the main body of the door body 2 is made of an acrylic plate, so that the internal condition of the door body 2 can be observed when the door body is isolated from the internal space and the external space. Preferably, the door body 2 is made of transparent acrylic plates.

Referring to fig. 1 to 3, specifically, the present embodiment further provides a machine tool 6, including 6 lifting protection doors as described above, wherein a plurality of frames of the lifting protection doors are disposed on top of the machine tool 6, and extension directions of stringers 12 of the frames are the same as length directions of the machine tool 6, and are both left and right directions; the door bodies 2 of the lifting protective doors are oppositely arranged on the front side and the rear side of the machine tool 6 in pairs; the driving devices connected with the door bodies 2, which are arranged on the front side and the rear side of the machine tool 6 in a pair, are symmetrical with respect to the center of the frame, so that the driving devices are respectively used for driving the door bodies 2 connected with the frame. Of course, in other embodiments, the number of the lifting guard doors may be set according to the actual length of the machine tool 6.

Specifically, in this embodiment, a top door 61 is further provided at the top of the machine tool 6, and a plurality of first locking members 71 are provided on an upper end surface of the top door 61 along a length direction of the machine tool 6; the second locking pieces 72 are disposed at the upper end of the door body 2 of each lifting protective door, and each second locking piece 72 is disposed in one-to-one correspondence with the first locking piece 71 in the vertical direction. When the lifting protective door is pulled to descend, the second locking piece 72 arranged at the upper end of the lifting protective door descends synchronously, and when the lifting protective door is locked with the second locking piece 72, the door body 2 of the lifting protective door also descends to a preset position, so that the lifting protective door is matched with the top door 61 to effectively isolate and protect the operation equipment of the machine tool 6 from the outside, and production safety is guaranteed.

Specifically, in this embodiment, an operation display electrically connected to the driving device, the first locking member 71 and/or the second locking member 72 is further provided on one side of the machine tool 6, and the operation display includes a tri-color lamp 8 for indicating the lifting operation state of the lifting protective door, for example, in the lifting or descending process, and the tri-color lamp is configured to send out a warning light signal, so as to indicate a safety signal when the lifting or descending is completed, thereby being beneficial to production safety. The operation display also comprises a plurality of input buttons and a display screen, wherein a monitoring person can input lifting instructions of the lifting protective door through the input buttons, and the display screen can display the lifting instructions input by the monitoring person. It should be understood that the operation display has an internal data processing unit to process the received signals to send instructions to the structures connected thereto, which may perform the functions described above, but is not limited to, for example, the display screen may also receive an electrical signal fed back by two locking elements to indicate whether the two locking elements are locked.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present invention is not intended to be limiting, but rather, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any changes, equivalents, modifications and improvements may be made without departing from the spirit and principles of the present invention.

Claims

1. A liftable protective door, comprising:

the door body is arranged on the frame in a lifting manner;

2. The lifting protective door according to claim 1, wherein the free end of the swing rod, the front guide wheel and the middle guide wheel each comprise two grooves distributed along the vertical direction so as to guide the two synchronous belts respectively.

3. The liftable protective door of claim 1, wherein the rear set of guide wheels comprises two first rear guide wheels and two second rear guide wheels disposed downstream of the first rear guide wheels; wherein,

4. The lifting protective door according to claim 3, wherein the two first rear guide wheels are respectively arranged on a beam where the front guide wheel is located and a beam opposite to the front guide wheel;

5. The lifting protective door according to claim 1, wherein the door body comprises two edges along the extending direction of the longitudinal beam, and a binding band portion is respectively provided at the bottom of the two edges toward one side of the cross beam to be connected with the other ends of the two synchronous belts.

6. The liftable protective door of claim 1, wherein the nitrogen spring comprises a cylinder and a plunger rod connected to the cylinder; wherein,

7. The liftgate of claim 1, wherein the body portion of the gate body is made of acrylic sheet.

8. A machine tool comprising a plurality of liftable protective doors according to any one of claims 1 to 7, wherein a plurality of frames of the liftable protective doors are provided on the top of the machine tool, and the longitudinal beams of the frames have the same extension direction as the length direction of the machine tool;

9. The machine tool according to claim 8, wherein a top door is further provided at a top of the machine tool, and an upper end surface of the top door is provided with a plurality of first locking pieces along a length direction of the machine tool;

10. The machine tool according to claim 9, wherein an operation display comprising a tri-color lamp is further provided on one side of the machine tool, and the operation display is electrically connected to the driving device, the first locking member and/or the second locking member, respectively.