KR0171134B1 - Tray lifting device of automatic tray changer - Google Patents

Abstract

The present invention discloses a tray lifting device of an automatic tray changer.

The present invention provides a tray lifting apparatus of an automatic tray changer for sequentially raising and lowering trays in an input chamber and an discharge chamber, the drive motor being provided to have a shaft in a center of a post of a cabinet constituting the input chamber and the discharge chamber; A main pulley mounted on the shaft of the drive motor; A sub pulley mounted on the upper and lower parts of the post to maintain a vertical direction with the main pulley; A timing belt wound to pass through the main pulley and the sub pulley; The guide block is mounted to reciprocate along the guide rail by the transfer of the timing belt, and includes a carrier on which the trays are mounted.

Therefore, the mechanically simple structure not only stably lifts and lowers the trays, but also increases work efficiency, thereby improving product productivity.

Description

Tray Lifting Device of Automatic Tray Changer

The present invention relates to an automatic tray changer, and more particularly, to a tray lifting apparatus of an automatic tray changer for continuously raising and lowering trays in an input chamber and an discharge chamber.

In general, the head drum of a tape recorder such as a video cassette tape recorder (VCR) is to reproduce or record a signal recorded on a tape traveling along a certain driving path of the odometer. .

The head drum is mounted with an upper drum and a lower drum to which one or more video heads are attached, and a rotor and a stator transformer are interposed therebetween.

In addition, a drum motor is installed below the lower drum, and the upper drum is rotated according to the driving of the drum motor to perform a playback or recording function by the video head.

One example of the upper and lower drum processing steps constituting the head drum is described in FIG.

When the upper and the lower rum are cast by die casting, they are placed in a blank, that is, a workpiece to be mechanically processed.

The workpieces of the upper and lower rum are machined by roughing, and the holes are processed by drilling and tapping. In addition, the workpiece after the hole processing is completed to remove foreign substances such as cutting oil or oil contaminated on the surface through a washing process after finishing finishing (仕 上 加工).

In addition, after the washing process, the defective product is sorted out through the external inspection, and the workpiece of the upper drum is subjected to tape buffing, and then the hard carbon film coating is selectively performed. Through this processing process, the workpieces of upper and lower rum are manufactured as finished products and supplied to the head drum assembly line.

By the way, the machine for roughing, hole and finishing processing of the workpiece is mainly a numerical control machine tool is used, this numerical control machine tool is widely used as an automation means for improving the operation rate.

In an automated line employing such a numerically controlled machine tool, an automatic tray changer is used to continuously supply the workpiece to the numerically controlled machine tool, and the automatic tray changer mounts the workpiece on a tray for each machining process. Therefore, it is sequentially supplied to the processing machine.

In general, automatic tray changers are equipped with a conveyor system or a chain type buffer to carry out trays.

However, conveyor systems or chain type buffers require manual loading and discharging of the trays, which can lead to damage to the product, increase worker fatigue and delay work preparation time, resulting in reduced productivity. The result was a problem.

In addition, the installation space of the equipment is occupied excessively, the efficient use of the equipment is limited, and the initial equipment investment cost is increased, thereby reducing the economic efficiency. In addition, in order to transport the tray to the machine according to each processing process, a separate dedicated trolley is needed, and a lot of unnecessary time and place are required for the transfer and waiting of this exclusive trolley, thus systematic work management and production management There was a problem that becomes cumbersome and difficult.

In order to solve this problem, the unmanned transport trolley has been adopted to operate a direct numerical control method.

However, the military management method adopting the unmanned conveyance trolley not only requires excessive initial capital investment cost but also affects the overall work line when an abnormality occurs in one group of machines, which reduces work flexibility and productivity. This was brought about.

Therefore, the trays carried by the trolleys are continuously introduced and discharged according to the operation of the automatic tray changer, and the workpieces mounted on the trays are sequentially processed in accordance with the operation of the machine installed in each unit in association with the automatic tray changer. A block line system for processing is filed by the applicant in Korean Patent No. 95-12331 entitled Auto Tray Changer.

The applied automatic tray changer is equipped with the workpieces on the trays and continuously fed and discharged to the machine, thereby preventing damage to the finished products, reducing worker fatigue, and saving work preparation time. Not only is this improvement, but also the installation space of the facility is reduced to facilitate the efficient use and management of the facility.

On the other hand, the automatic tray device includes a tray lifting device for sequentially raising and lowering the tray in the input chamber and discharge chamber.

The lifting device includes a drive motor that is installed to have a shaft in the center of the post of the cabinet constituting the input chamber and the discharge chamber; A main pulley mounted to the shaft of the drive motor; A sub pulley mounted on the upper and lower parts of the post so as to maintain a vertical direction with the main pulley; A timing belt wound to pass through the main pulley and the sub pulley; The guide block is mounted to reciprocate along the guide rail by the transfer of the timing belt, and includes a carrier on which the trays are mounted.

However, such a conventional tray lifting apparatus has a problem that the tray located at the top of the trays mounted on the carrier interferes with the tray located next while moving to the workroom side. In addition, when the tray is moved to discharge to the discharge chamber after the processing in the work room, there is a problem causing interference with the uppermost tray already mounted on the discharge chamber changer.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is not to interfere with other trays mounted on the changer when the tray is moved from the input chamber to the working chamber or from the working chamber to the discharge chamber. It is to provide a tray lifting device of an automatic tray changer that can adjust the height of the tray mounted on the changer.

Features of the present invention for achieving the above object, the drive motor is installed to have a shaft in the center of the post of the cabinet constituting the input chamber and the discharge chamber in order to sequentially raise and lower the trays in the input chamber and discharge chamber; A main pulley mounted to the shaft of the drive motor; A sub pulley mounted on an upper portion and a lower portion of the post to maintain a vertical direction with the main pulley; A timing belt wound to pass through the main pulley and the sub pulley; A tray lifting device of an automatic tray changer including a carrier on which a guide block is mounted to reciprocate along a guide rail by a transfer of the timing belt, wherein the trays are mounted on the upper side of both the input chamber and the discharge chamber. A sensor is mounted, and the sensor detects the position of the tray and lowers the carrier by one pitch.

1 is a process chart for explaining the processing state of the general workpiece.

2 is a perspective view showing an automatic tray changer to which the tray lifting device according to the present invention is applied.

Figure 3 is a perspective view showing the back of the automatic tray changer to explain the tray lifting apparatus according to the present invention.

4 is a perspective view partially showing the tray lifting apparatus according to the present invention.

Figure 5 is a schematic side view for explaining the operating state of the input chamber in the tray lifting apparatus according to the present invention.

Figure 6 is a schematic side view for explaining the operating state of the discharge chamber in the tray lifting apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

2: input chamber 3: discharge chamber

10,20: Drive motor 12,32: Main pulley

13,14,33,34: sub pulley 15,35: timing belt

20,40: carrier 22,42: guide rail

25,45 Sensor T: Tray

Hereinafter, one preferred embodiment of the tray lifting apparatus of the automatic tray changer according to the present invention will be described in detail with reference to the accompanying drawings.

2 to 6 are views for explaining the tray lifting apparatus of the automatic tray changer according to the present invention.

First, referring to FIG. 2, a configuration of an automatic tray changer to which the tray lifting apparatus according to the present invention is applied will be described.

The automatic tray changer (ATC) is divided into two sides so that the cabinet 1 has the input chamber 2 and the discharge chamber 3, and the work chamber 4 is disposed above the input chamber 2 and the discharge chamber 2. ) Is partitioned by casing (5), and the working room (4) is equipped with a robot (6).

As shown in FIG. 3, posts 7 and 8 are vertically provided at the rear center of the cabinet 1 constituting the input chamber 2 and the discharge chamber 3, respectively.

In addition, drive motors 10 and 30 having shafts 11 and 21 are respectively provided on the central rear surfaces of the posts 7 and 8, and the shafts 11 and 8 are rotated freely as the drive motors 10 and 30 are driven. On one side of the 21, main pulleys 12 and 32 are mounted, respectively.

Subpulleys 13, 14, 33 and 34 are mounted on one side of the upper and lower sides of the posts 7 and 8 so as to be perpendicular to the main pulleys 12 and 32, respectively.

Meanwhile, timing belts 15 and 35 are wound to pass through the main pulleys 12 and 32 and the sub pulleys 13, 14, 33, and 34, and the timing belts 15 and 35 are driven motors. It is conveyed by the driving of (10,30).

As shown in FIGS. 3 and 4, carriers 20 and 40 are provided to reciprocate along the guide rails 22 and 42 by the transfer of the timing belts 15 and 35.

Guide blocks 21 and 41 are mounted on the rear surfaces of the carriers 20 and 40, and the guide blocks 21 and 41 are guided along the guide rails 22 and 42 to slide.

The guide rails 22 and 42 are positioned on the inner surfaces of the posts 7 and 8, and the carriers 20 and 40 are formed in a c-shape as a whole.

Here, the initial operating position of the carrier 20 is preferably set at the lower part of the input chamber 2, and the initial operating position of the carrier 40 is preferably set at the upper part of the discharge chamber 3.

In addition, a pair of idle pulleys 16, 17, 36 and 37 are further mounted to support the outer surfaces of the timing belts 15 and 35, and the idle pulleys 16, 17, 36 and 37 are mounted on the main pulley (i.e. 12, 32 are mounted adjacent to.

On the other hand, one part of the timing belts 15 and 35 is fixed to the back surface of the carriers 20 and 40 by plates 23 and 43 by fastening general screws.

As shown in FIG. 4 and FIG. 5, the upper part of the carrier 20, 40 is sequentially operated by operation of the tray feeders 24 and 44 provided in the lower part of the input chamber 2 and the discharge chamber 3, respectively. The stacked trays T are transported and mounted.

Here, symbol T ₁ refers to a tray located at the top of the trays T, and symbol T ₂ refers to a tray located next to the top tray T ₁ .

As shown in FIG. 5, a pair of sensors 25 and 45 are further mounted on both sides of the input chamber 2 and the discharge chamber 3, respectively, and the sensors 25 and 45 emit light. The part and the light receiving part are provided so as to correspond to each other.

The sensors 25 and 45 sense the position of the next tray T ₂ so as to prevent interference of the tray T ₁ located at the top of the trays T, thereby pitching the carriers 20 and 40 one pitch. ) Lower.

The timing belts 15 and 35 may use chains, and racks and pinions may be employed to reciprocate the carriers 20 and 40.

Referring to the operation of the tray lifting device of the automatic tray changer according to the present invention as described above are as follows.

Referring to FIG. 5, when the trays T are mounted on the carrier 20 by the operation of the tray feeder 24 in the input chamber 2, the driving motor 10 is driven to the main body. The pulley 12 is rotated.

Then, as the main pulley 12 rotates, the timing belt 15 is transferred via the sub pulleys 13 and 14, and the carrier which is positioned at the lower portion of the input chamber 2 while the timing belt 15 is transferred. 20 is raised and lowered along the guide rail 22 to the work chamber 4 side in the direction of arrow A. FIG.

At this time, when the uppermost tray T _{1 of the} trays T mounted on the carrier 20 is elevated to the work room 4 side, the uppermost tray T ₁ is clamped by the operation of the tray clamping device (not shown).

In this state, the sensor 25 senses the position of the uppermost tray T ₁ , and the driving motor 10 is driven by the detection of the sensor 25 to lower the carrier 20 by one pitch.

Accordingly, the interference between the uppermost tray T ₁ and the next tray T ₂ is prevented, so that the lifting operation of the trays T is easily and stably performed.

As shown in FIG. 6, the uppermost tray T ₁ from the work chamber 4 is transferred to the upper part of the discharge chamber 3 in the state of being clamped by the tray clamping device, and then the uppermost tray T ₁ is clamped. When the state is reached, the uppermost tray T ₁ is mounted on the carrier 40.

In this state, the driving motor 30 is driven to rotate the main pulley 32, and the timing belt 35 is transferred via the sub pulleys 33 and 34 according to the rotation of the main pulley 32.

In addition, as the timing belt 35 is transferred, the carrier 40 is lowered by one pitch in the direction of the arrow B along the guide rail 42, and the sensor 45 is lowered by the uppermost tray T ₁ on the carrier 40. Detected location.

This prevents the interference caused between the uppermost tray T ₁ on the carrier 40 and another tray, for example, the next tray T ₂ , which is then transported to the discharge chamber 3 side, thereby lowering the trays T. Operation is easy and stable.

Therefore, the raising and lowering operations of the trays (T) are sequentially completed by the mutual operation of the driving motors 10 and 30 and the carriers 20 and 40, thereby increasing the efficiency of the work and improving the productivity of the product.

On the other hand, the above-described embodiment is merely to describe one preferred embodiment of the present invention, the scope of the present invention is not limited to this, and can be changed appropriately within the scope of the same thought, for example, It is widely applicable to the transport and packaging system of logistics.

As described above, according to the tray lifting apparatus of the automatic tray changer according to the present invention, the lifting and lowering operations of the trays are stably performed by a mechanically simple structure, and the productivity of the product is improved due to high work efficiency.

Claims (1)

Axles in the center of the posts 7 and 8 of the cabinet 1 constituting the input chamber 2 and the discharge chamber 3 to sequentially move up and down the trays in the input chamber 2 and the discharge chamber 3. Drive motors 10 and 30 installed to have 11 and 21, respectively; Main pulleys 12 and 32 mounted on the shafts 11 and 31 of the drive motors 10 and 30; Sub pulleys (13,14,33,34) mounted on the upper and lower portions of the posts (7,8) so as to be perpendicular to the main pulleys (12,32); Timing belts (15,35) wound around the main pulley (12,32) and sub pulleys (13, 14, 33, 34); The guide blocks 21 and 41 are mounted to reciprocate along the guide rails 22 and 42 by the transfer of the timing belts 15 and 35, and the carriers 20 and 40 on which the trays T are mounted are mounted. In the tray lifting apparatus of the automatic tray changer including, a pair of sensors 25 and 45 are further mounted on both upper sides of the input chamber 2 and the discharge chamber 3, respectively. The tray lifting device of the automatic tray changer for detecting the position of the tray (T ₁ ) to lower the carrier (20, 40) by one pitch.