CN210499472U

CN210499472U - Double-door one-way linkage device and machine tool automatic door with same

Info

Publication number: CN210499472U
Application number: CN201921002010.3U
Authority: CN
Inventors: 闫宏超; 夏科军; 鄢明亮; 于海阔
Original assignee: Hardinge Precision Machinery Jiaxing Co Ltd
Current assignee: Hardinge Precision Machinery Jiaxing Co Ltd
Priority date: 2019-06-29
Filing date: 2019-06-29
Publication date: 2020-05-12
Anticipated expiration: 2029-06-29

Abstract

The utility model relates to a two one-way aggregate unit and have its lathe automatically-controlled door, two one-way aggregate unit include the fixed bolster, and its characterized in that still includes first support and second support, be equipped with first slide rail on the fixed bolster and with the parallel first chain of first slide rail, first support and second support can slide on first slide rail, are equipped with rotatable sprocket on the first support, be equipped with the second chain on the second support, the sprocket is located between first chain and the second chain, and with first chain and second chain meshing. The double-door one-way linkage device provided by the utility model is driven by the meshing of the chain and the chain wheel, and the chain has the advantages of light weight, partial replacement and easy maintenance; through setting up first support and second support for the one-way aggregate unit of double door structurally forms the modularization, and the convenience is connected easy to maintain with the door structure of different specifications.

Description

Double-door one-way linkage device and machine tool automatic door with same

Technical Field

The utility model belongs to the technical field of the machine tool part, especially a two one-way aggregate unit and have its lathe automatically-controlled door.

Background

The machine tool outer cage cover has a safety protection effect, the outer cage cover is provided with a door structure capable of being opened and closed, the machine tool door structure has a single-door one-way combination form, a multi-door two-way combination form and the like, and the machine tool door structure is an interaction area of an external environment and an internal environment of the outer cage cover. In order to match with automatic production, the machine tool door structure can be designed to have an automatic opening and closing function, and most machine tool automatic doors adopt a single power to control the movement of the single door structure at present.

On a small vertical machining center, the X-axis stroke of the machining center is 300-600mm, and if single-leaf door protection is adopted for the machine tool outer cage cover with the size, the structural restriction causes the width of a door opening to be usually smaller than half of the width of the outer cage cover, so that the clamping of a workpiece is not facilitated; if double-door protection is adopted, in order to expand the width of the door opening as much as possible, one-way door opening is generally adopted in the industry. The structure that one-way opened the door generally comprises driving door and driven door, and after driving door removed a definite position, its one side contact driven door, and then drive the driven door and remove, and this kind of drive mode will have very big impact and resilience when opening the door fast, is unfavorable for the automatic transformation of lathe.

The utility model discloses a chinese utility model patent of application number 201320014528.5 discloses a digit control machine tool linkage double door, and it is through the cooperation form that adopts gear and rack, and the translation rate of control initiative door is the twice of driven door, and then realizes the one-way linkage of double door. In the technical scheme disclosed by the invention, various defects exist, which are not beneficial to industrial implementation, and the specific steps are as follows:

1) the rack is adopted for driving, so that the upper ends of the driving door and the driven door are overweight, the requirement on effective driving force of the door is increased, and in addition, the rack is expensive, so that the cost of automatic modification is increased;

2) the gear is directly arranged on the driven door, so that the gear and the rack are effectively matched for a long time, the requirement on the rigidity of the door is high, and the machine tool cost is further increased;

3) the machine tool door structure is a sheet metal part, the machining precision is low, the gear is directly arranged on the driven door, the rack is directly arranged on the driving door, the adjustability of the assembly is sacrificed, and certain extra burden is provided for the man-hour cost of machine tool manufacturing.

Disclosure of Invention

In order to solve the problem, the utility model provides a two one-way aggregate unit and have its lathe automatically-controlled door to improve the convenience of assembly debugging and maintenance, and simplify structure and reduce cost.

In order to achieve the above object, the utility model provides a two one-way linkage, including the fixed bolster, its characterized in that still includes first support and second support, be equipped with first slide rail on the fixed bolster and with the parallel first chain of first slide rail, first support and second support can slide on first slide rail, are equipped with rotatable sprocket on the first support, be equipped with the second chain on the second support, the sprocket is located between first chain and the second chain, and with first chain and the meshing of second chain.

The automatic machine tool door with the double-door one-way linkage device is characterized by further comprising a driving door, a driven door and a cylinder, wherein the upper end of the driving door is connected with the second support, the upper end of the driven door is connected with the first support, and the cylinder is installed on the fixed support and used for driving the driving door to move along the first sliding rail.

Further, the first support comprises a first sliding block and a third sliding block, the second support comprises a second sliding block and a fourth sliding block, the first sliding block, the second sliding block, the third sliding block and the fourth sliding block are connected with the first sliding rail in a sliding mode, the second sliding block is located between the first sliding block and the third sliding block, and the third sliding block is located between the second sliding block and the fourth sliding block.

Furthermore, the first chain comprises first connecting chain links and first supporting chain links, 1-4 first connecting chain links are arranged between every two adjacent first supporting chain links, first fixing plates which are symmetrically distributed are arranged on two sides of each first supporting chain link, threaded holes are formed in the first fixing plates, and the first fixing plates are fixedly mounted on the fixing support through screws.

Furthermore, the second chain comprises second connecting chain links and second supporting chain links, 1-4 second connecting chain links are arranged between every two adjacent second supporting chain links, second fixing plates which are symmetrically distributed are arranged on two sides of each second supporting chain link, threaded holes are formed in the second fixing plates, and the second fixing plates are fixedly mounted on the second support through screws.

Furthermore, the connection between the driving door and the second support and the connection between the driven door and the first support are both detachably connected.

Furthermore, a second sliding rail parallel to the first sliding rail is arranged on the fixed support, a second pulley is arranged at the lower end of the driving door, a first pulley is arranged at the lower end of the driven door, and the first pulley and the second pulley are both connected with the second sliding rail in a sliding mode.

Further, the telescopic rod of the air cylinder is connected with the second sliding block or the fourth sliding block.

The double-door one-way linkage device provided by the utility model is driven by the meshing of the chain and the chain wheel, and the chain has the advantages of light weight, partial replacement and easy maintenance; the double-door one-way linkage device is modularized in structure by arranging the first support and the second support, is convenient to connect with door structures of different specifications, and is easy to maintain; the chain wheel is arranged on the first support, so that the chain wheel can be adjusted when being assembled with the first chain and the second chain. The utility model provides a machine tool automatic door with a double-door one-way linkage device, which is beneficial to reducing the power demand on the cylinder due to the adoption of the double-door one-way linkage device with the characteristic of light weight, thereby reducing the cost; the telescopic rod of the air cylinder is fixed on the second sliding block or the fourth sliding block through the connecting plate, so that the stability of transmission is facilitated, and the reliability of automatic operation of the machine tool is improved.

Drawings

FIG. 1 is a schematic perspective view of a double door unidirectional linkage;

FIG. 2 is a bottom view of the two-door uni-directional linkage of FIG. 1;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a right side view of the double door check link of FIG. 1;

FIG. 5 is a schematic view of the first bracket and sprocket arrangement;

FIG. 6 is a schematic view of the structure of the first chain;

FIG. 7 is a schematic perspective view of an automatic door of a machine tool;

fig. 8 is an enlarged view of a portion B in fig. 7.

In the figure: 1-fixed support, 2-first slide rail, 3-first slide block, 4-second slide block, 5-third slide block, 6-fourth slide block, 7-second support, 8-first support, 9-first chain, 11-second chain, 12-rotating shaft, 13-chain wheel, 15-driving door, 16-driven door, 17-cylinder, 19-connecting plate, 802-strip groove, 18 a-tail support, 18 b-head support, 901-first connecting chain link, 902-first supporting chain link and 902 a-first fixed plate.

Detailed Description

Referring to fig. 1, the double-door unidirectional linkage device comprises a fixed bracket 1, a first bracket 8 and a second bracket 7, wherein the fixed bracket 1 is a fixed part without freedom degree. The fixed support 1 is fixedly provided with a first slide rail 2 and a first chain 9, and the first chain 9 is parallel to the first slide rail 2. Referring to fig. 2 to 4, a second chain 11 is fixedly arranged on the second bracket 7, and the second chain 11 is arranged on one side of the first chain 9 and is parallel to the first chain 9 and the first slide rail 2. A sprocket 13 is rotatably provided on the first bracket 8, the sprocket 13 being located between the first chain 9 and the second chain 11 and meshing with the first chain 9 and the second chain 11.

Referring to fig. 5, the sprocket 13 is rotatably mounted on the first bracket 8 by a rotating shaft 12 to be rotatable on the first bracket 8. The first bracket 8 is provided with a through-going strip-shaped groove 802, and a part of the teeth of the chain wheel 13 pass through the strip-shaped groove 802 to be meshed with the second chain 11.

Referring to fig. 1, the first bracket 8 includes a first slider 3 and a third slider 5, the second bracket 7 includes a second slider 4 and a fourth slider 6, and the first slider 3, the second slider 4, the third slider 5 and the fourth slider 6 are slidably connected to the first slide rail 2 and can slide on the first slide rail 2, so as to drive the first bracket 8 and the second bracket 7 to slide on the first slide rail 2. The first sliding block 3, the second sliding block 4, the third sliding block 5 and the fourth sliding block 6 are sequentially arranged, the second sliding block 4 is located between the first sliding block 3 and the third sliding block 5, and the third sliding block 5 is located between the second sliding block 4 and the fourth sliding block 6. The first bracket 8 and the second bracket 7 form an interlocking structure, so that the first bracket 8 and the second bracket 7 cannot be separated from each other and can only move mutually in a preset position, which not only can ensure that the chain wheel 13 is always meshed with the first chain 9 and the second chain 11, but also can determine the moving distance and the position of the first bracket 8 and the second bracket 7 through the arrangement of the distance between the four sliding blocks.

Referring to fig. 6, the first chain 9 includes first connecting links 901 and first supporting

links

902, 1 to 4 (3 in the figure) first connecting links 901 are disposed between two adjacent first supporting links 902, first fixing plates 902a symmetrically distributed are disposed on two sides of the first supporting links 902, through holes are disposed on the first fixing plates 902a, and the first fixing plates 902a are fixedly mounted on the fixing bracket 1 by screws.

The second chain 11 has the same structure as the first chain 9, namely the second chain comprises a second connecting chain link and a second supporting chain link, the second connecting chain link and the second supporting chain link are respectively the same as the first connecting chain link and the first supporting chain link in structure, 1-4 second connecting chain links are arranged between every two adjacent second supporting chain links, two sides of each second supporting chain link are provided with second fixing plates which are symmetrically distributed, threaded holes are formed in the second fixing plates, and the second chain 11 is fixedly installed on the second support 7 through screws.

Referring to fig. 7, the automatic door of the machine tool with the above-mentioned double-door unidirectional linkage device further includes a driving door 15, a driven door 16, a cylinder 17 and a second slide rail (not shown in the figure), which is disposed on the fixed bracket 1 and is parallel to the first slide rail 2. The upper end of the driving door 15 is detachably connected with the second support 7, the lower end of the driving door is provided with a second pulley, and the second pulley is slidably connected with a second sliding rail. The upper end of the driven door 16 is detachably connected with the first support 8, the lower end is provided with a first pulley, and the first pulley is slidably connected with the second sliding rail. In the process of moving the driving door 15 and the driven door 16, the upper part is provided with four sliding blocks which slide along the first sliding rail, the lower part is provided with two pulleys which slide along the second sliding rail, and the resistance is small and the movement is smoother. The driving door is detachably connected with the second support and the driven door is detachably connected with the first support, so that the double-door unidirectional linkage device and the machine tool door can be conveniently installed, detached and maintained, and the double-door unidirectional linkage device is modularized and can be connected with various machine tool doors.

Referring to fig. 7 and 8, a cylinder body of the air cylinder 17 is mounted on the fixing bracket 1 through a tail bracket 18a and a head bracket 18b, an expansion link of the air cylinder 17 is connected with the second slider 4 or the fourth slider 6 through a connecting plate 19, and the air cylinder 17 can drive the driving door 15 to move through the second bracket 7 by driving the second slider 4 or the fourth slider 6.

The working principle of the double-door one-way linkage device is as follows:

since the center of the chain wheel 13 is fixed on the top of the driven door 16, the chain wheel and the driven door 16 will move synchronously in the direction of the sliding rail; since the second chain 11 is indirectly fixed on the top of the driving door 15 through the second bracket 7, the second chain 11 and the driving door 15 will move synchronously along the sliding rail direction; since the second chain 11 is meshed with the chain wheel 13, the chain wheel is meshed with the first chain 9, and the first chain 9 is fixed on the fixed support 1 and cannot move, at any moment, the meshing point of the chain wheel and the first chain is taken as the instantaneous center of speed, so that the instantaneous speed of the center of the chain wheel is half of the instantaneous speed of the meshing point of the chain wheel and the second chain in the direction of the slide rail. Based on this principle, assuming that the door opening direction is from right to left, the driving door 15 is disposed on the right side, and the driven door 16 is disposed on the left side, when the driving door is pushed to move, the driven door will move in the same direction at the speed of the driving door 1/2, and by structurally setting the stroke of the driving door to be twice that of the driven door, the driving door can reach the end point of the door opening simultaneously with the driven door. Conversely, during the closing process, the driving door and the driven door reach the end position of closing the door simultaneously.

The working process of the automatic door comprises the following steps:

when the driving door 15 and the driven door 16 are at the closed position, after the compressed gas is introduced into the cylinder 17, the telescopic rod of the cylinder extends out to push the connecting plate 19 to move along the first sliding rail direction, because the connecting plate is fixedly connected with the second sliding block or the fourth sliding block, and the second sliding block and the fourth sliding block are fixedly connected with the second bracket, the second bracket will drive the driving door and the second chain which are fixedly connected with the second bracket to synchronously move along the first sliding rail direction, and at the same time, the second chain will drive the chain wheel which is engaged with the second chain to rotate, and the chain wheel is also engaged with the fixed first chain, so the chain wheel will have two states of rotating around the rotating shaft and moving along the first sliding rail direction, according to the statement of the working principle of the double-door one-way linkage device, in the direction of the first sliding rail, the moving speed of the chain wheel is 1/2 that the moving speed of the driving door, The first support and the driven door move synchronously in the direction of the first sliding rail, so that the driving door and the driven door move simultaneously, and the moving speed of the driving door is twice that of the driven door. On the contrary, when the driving door and the driven door are in the opening positions, the telescopic rod of the cylinder is retracted after the cylinder is filled with the reverse compressed gas, and the driving door and the driven door simultaneously reach the closing positions. The position detection signals of the automatic door at the time of full opening and full closing are detected by position signal sensors at both ends of the cylinder.

The air cylinder is provided with two air inlet pipes which are respectively connected to two chambers separated by the piston on the air cylinder, the other ends of the air inlet pipes are connected to the electromagnetic valves, and the electromagnetic valves are controlled by a PLC program in the numerical control system.

Claims

1. The utility model provides a two one-way aggregate unit, includes the fixed bolster, its characterized in that still includes first support and second support, be equipped with first slide rail on the fixed bolster and with the first chain of first slide rail parallel, first support and second support can slide on first slide rail, are equipped with rotatable sprocket on the first support, be equipped with the second chain on the second support, the sprocket is located between first chain and the second chain, and with first chain and second chain meshing.

2. The double door unidirectional linkage of claim 1, wherein the first bracket comprises a first slider and a third slider, the second bracket comprises a second slider and a fourth slider, the first slider, the second slider, the third slider and the fourth slider are slidably coupled to the first slide rail, the second slider is positioned between the first slider and the third slider, and the third slider is positioned between the second slider and the fourth slider.

3. The double-door one-way linkage device according to claim 2, wherein the first chain comprises first connecting chain links and first supporting chain links, 1-4 first connecting chain links are arranged between every two adjacent first supporting chain links, first fixing plates are symmetrically arranged on two sides of each first supporting chain link, threaded holes are formed in the first fixing plates, and the first fixing plates are fixedly mounted on the fixing support through screws.

4. The double-door unidirectional linkage device according to claim 3, wherein the second chain comprises second connecting chain links and second supporting chain links, 1-4 second connecting chain links are arranged between every two adjacent second supporting chain links, second fixing plates are symmetrically arranged on two sides of each second supporting chain link, threaded holes are formed in the second fixing plates, and the second fixing plates are fixedly mounted on the second supports through screws.

5. The automatic door of machine tool with one-way linkage of double door of any one of claims 1 to 4, further comprising a driving door, a driven door and a cylinder, wherein the upper end of the driving door is connected with the second bracket, the upper end of the driven door is connected with the first bracket, and the cylinder is mounted on the fixed bracket and used for driving the driving door to move along the first sliding rail.

6. The automatic door for machine tools of claim 5, wherein the connection between the driving door and the second bracket and the connection between the driven door and the first bracket are all detachable connections.

7. The automatic door of machine tool according to claim 6, wherein the fixed bracket is provided with a second slide rail parallel to the first slide rail, the lower end of the driving door is provided with a second pulley, the lower end of the driven door is provided with a first pulley, and the first pulley and the second pulley are slidably connected with the second slide rail.

8. The automatic door of machine tool according to claim 7, characterized in that the telescopic rod of the cylinder is connected with the second slider or the fourth slider.