KR100655644B1 - Floating seal automatic production equipment - Google Patents

Abstract

Floating seal automatic production apparatus according to the present invention comprises a centrifugal casting unit for forming a yarn in a centrifugal casting method through a rotating mold; A molten metal injection unit for injecting molten metal into the mold by a predetermined amount; A weight measuring unit for measuring the weight of the yarn taken out from the centrifugal casting unit; A deburring unit for removing burrs remaining in the weighing chamber in the weighing unit; A transfer unit for transferring the yarn after the burr is removed from the deburring unit through a conveyor; A finishing and grinding processing unit connected to the transfer unit for finishing and grinding the yarn; It is configured to include a lapping processing unit which is processed after the yarn processed in the finishing and grinding processing parts are precisely processed and discharged, so that continuous automatic production operation is possible, mass production is possible with a small number of workers, and high quality is ensured. It can work.

Description

Automatic production apparatus for floating seal

1 is a front configuration diagram showing a floating seal automatic production apparatus according to the present invention,

2 is a plan view showing a floating seal automatic production apparatus according to the present invention,

Figure 3 is a side configuration view as viewed from the molten metal injection device side of the automatic production apparatus for floating seals according to the present invention,

Figure 4 is an enlarged side view of the molten metal injection apparatus according to the present invention,

5 is an enlarged front view of the molten metal injection apparatus according to the present invention;

Figure 6 is a schematic configuration diagram showing a guide roller of the molten metal injection apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: melting furnace 3: centrifugal casting part

4: mold 5: rotary table

6: thread extraction unit 7: weight measuring unit

9: deburring portion 10: first transfer portion

11: 2nd transfer part 13: room cooling part

15: finishing processing part 17: grinding processing part

19: thread washing part 20: lapping processing part

23: conveyor 30: molten metal injection portion

31: molten metal injection cup 33: injection loader

40: horizontal feed portion 41: support frame

43: linear rail 45: motor

47: horizontal moving body 50: vertical transfer unit

51: vertical body 53: roller

54a: roller support 54b: elastic member

55: motor 56: connecting shaft

57: chain power transmission mechanism 58: pinion / rack mechanism

60: rotating operation part 62: motor

64: rotating link arm

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a floating seal for use in a track roller of a tracked vehicle, and more particularly, to centrifugally casting a yarn by centrifugal casting using a centrifugal force rather than a conventional shell mold casting. The present invention relates to a floating seal automatic production apparatus for automatically manufacturing and producing from a lapping process to a lapping process.

In general, the caterpillar is used in agricultural and civil vehicles, such as forklifts and bulldozers, and is used in military tanks and armored vehicles.

The tracked vehicle is provided with a track roller for supporting the chain belt to rotate. The track roller is filled with lubricating oil to reduce rotational friction and reduce wear, and is equipped with a metal seal to prevent the lubricating oil from leaking out or introducing foreign matter from the outside. This seal is called a floating seal.

In the manufacture of the yarn is a centrifugal casting method using a centrifugal force rather than a conventional shell mold (shell mold) casting method, the molten metal is injected into the centrifugal casting mold, and then a circular ring shaped yarn is manufactured by a centrifugal casting method, and the finishing process Through the grinding process and lapping process, the circular ring-shaped yarn is precisely processed and produced.

However, in the process of manufacturing the yarn as described above, after cooling the circular yarn produced by centrifugal casting, and then manually processing the yarn while moving to the finishing machine, grinding machine, lapping machine, the yarn production work is complicated. In addition, it takes a lot of production time, there is a problem that the quality of the product also falls.

In addition, the process of injecting the molten metal into the centrifugal casting mold also makes a separate injection molten metal on the mold and injects the molten metal separately so that the overall structure is complicated, in particular, the molten metal through the injection molten metal. Since the molten metal is injected in a state where the temperature of the molten metal drops a lot, the fluidity of the molten metal decreases and the foreign matter enters the molten metal so that the quality of the yarn decreases.

The present invention has been made in order to solve the above problems, the production of yarn by being configured so that the centrifugal casting process, the weighing process, the deburring process, the finishing process, the grinding process, the lapping process to automatically proceed to manufacture the floating seal Its purpose is to provide an automatic production system for floating seals that is easy to work with, which allows mass production and improves quality.

Floating thread automatic production apparatus according to the present invention for realizing the above object is provided with a mold that rotates on a rotary table, the yarn is formed by the centrifugal casting method, the thread extraction device for taking out the yarn formed from the mold on one side A centrifugal casting part provided; A molten metal injection unit for injecting a molten metal for forming the seal into a mold on the rotary table by a predetermined amount from a melting furnace; A weight measuring unit which measures the weight of the yarn taken out from the yarn taking out device of the centrifugal casting unit; A deburring unit for removing burrs remaining in at least one of the inner diameter and the outer diameter of the weighing yarn in the weighing unit; A first transfer unit for transferring the yarn to the weight measuring unit and the deburring unit in the yarn taking out device, and a second transfer unit for transferring the yarn after the burr is removed from the deburring unit; A finishing and grinding processing unit connected to the second transfer unit for finishing and grinding the yarn; It characterized in that it comprises a lapping processing portion that is processed and discharged after precision processing is transferred to the yarn processed in the finishing and grinding processing.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a front configuration diagram showing a floating seal automatic production apparatus according to the present invention, Figure 2 is a plan view showing a floating seal automatic production apparatus according to the present invention.

The process of automatically producing a floating seal according to the present invention is divided into six processes, each process consisting of a centrifugal casting process, a weighing process, a deburring process, a finishing process, a grinding process, and a lapping process in order.

In the floating seal automatic production apparatus according to the present invention for realizing such an automatic production process of the floating seal, as shown in Figs. 1 and 2, the molten metal for forming the floating seal from the melting furnace (1) die (4) The molten metal injection unit 30, which is a molten metal injection unit for supplying a predetermined amount, is provided, and the mold 4 rotating on the rotary table 5 is formed to form a seal in a centrifugal casting method, and formed at the mold 4 on one side. Centrifugal casting part 3 provided with the thread take-out apparatus 6 which takes out a thread, and the weight measuring part 7 which measures the weight of the yarn taken out from the thread take-out apparatus 6 of the said centrifugal casting part 3; And a deburring section 9 for removing burrs remaining in the inner and outer diameters of the weighed section in the weighing section 7, a thread takeout device 6 of the centrifugal casting section 3, and a weighing section. (7), The 1st conveyance part 10 which conveys a thread in order of the deburring part 9 is comprised.

The finishing process of processing the inner circumferential surface of the yarn transferred through the conveyor 12 and the second transfer part 11 for transferring the yarn after the burr removal from the deburring part 9 through the conveyor 12. Precision machining of the processing part 15, the grinding processing part 17 which is located in parallel with the finishing processing part 15, and processes the one surface of the finishing-processed thread, and the thread processed by the grinding processing part 17 It is comprised including the lapping process part 20.

Here, the second cooling unit 11 is located in the yarn cooling unit 13 for cooling the yarn conveyed through the deburring unit 9, the yarn cooling unit 13 is a blower or the like It is preferable that it is comprised so that it may cool by an air cooling system.

In addition, it is preferable that the yarn washing unit 19 for washing the ground yarn is located between the grinding processing unit 17 and the lapping processing unit 20.

Looking at the molten metal injection device 30 in detail in the floating seal automatic production apparatus according to the present invention configured as described above with reference to Figures 3 to 5 as follows.

Figure 3 is a side configuration of the automatic floating seal production apparatus according to the present invention, Figure 4 is an enlarged side view of the molten metal injection apparatus according to the invention, Figure 5 is a front view of the molten metal injection apparatus according to the present invention Detailed view.

In the molten metal injection apparatus 30 according to the present invention, as shown in FIG. 3, two sets of injection apparatuses are installed on both sides of the melting furnace 1, and the height and specific design dimensions thereof are different, but the overall configuration is the same symmetrical structure. Is done.

Each of the molten metal injection device 30 is an injection loader 33 is equipped with a molten metal injection cup 31 in which a predetermined amount of molten metal is contained, and is connected between the melting furnace 1 and the rotary table 5 for a long time. A horizontal feeder 40 for moving the 33 in the front-rear direction, a vertical feeder 50 connected to the horizontal feeder 40 to move the injection loader 33 up and down, and the vertical feeder 50. It is configured to include a rotary operation unit 60 to rotate the injection loader 33 to tilt the molten metal injection cup 31 to inject the molten metal into the mold (4).

Here, the horizontal conveying part 40 is a support frame 41 which is positioned in the vertical and horizontal direction between the melting furnace 1 and the mold 4, and the linear rail 43 is installed long in the support frame 41 in the longitudinal direction And a horizontal moving body 47 which is coupled to the linear rail 43 in a long position in the vertical direction and is horizontally moved along the linear rail 43 by the driving of the motor 45.

The vertical transfer unit 50 is connected to and supported by the horizontal moving body 47, and is vertically elongated vertically coupled to the horizontal moving body 47 to be rotatably coupled to the horizontal moving body 47, and the horizontal moving body. It is provided on the 47 or the vertical body 51 side vertical driving means for moving the injection loader 33 in the vertical direction, and installed in the vertical body 51 to guide the vertical movement of the injection loader 33 It consists of a plurality of rollers 53 which are guide means.

As shown in the detailed view of FIG. 4, the vertical driving means includes a motor 55 installed in the horizontal moving body 47 and a horizontal body and the vertical body, while transmitting rotational force of the motor. The connecting shaft 56 connecting the 51, the chain power transmission mechanism 57 for transmitting the rotational force of the connecting shaft in the vertical body 51, and receives the rotational force of the chain power transmission mechanism 57 It is comprised by the pinion / rack mechanism 58 which moves the injection loader 33 up and down.

As shown in FIG. 6, the rollers 53 are formed in two pairs so as to be supported at both sides of the injection loader 33. One 53A of the pair of rollers is rotated in a state of being fixed to the roller support 54a installed in the vertical body 51, and the other 53B is the counterpart roller 53A by the elastic member 54b. It is provided so that it may move in a direction, and both rollers 53A and 53B are comprised so that it may support in the state in which it adhered in the both sides of the injection loader 33.

The rotary operation unit 60, the lower end of the vertical body 51 is rotatably connected to the horizontal moving body 47 as shown in Figure 5 by the connecting shaft 56, the connecting shaft 56 Rotation drive mechanism is connected between the horizontal moving body 47 and the vertical body 51 in the upper position of the).

The rotation drive mechanism is connected between the motor 62 provided in the horizontal moving body 47 and the horizontal moving body 47 and the vertical body 51 while rotating by the driving force of the motor 62. It consists of a rotary link arm 64 which rotates the injection loader 33 by pushing and pulling the vertical body 51.

Referring to the operation of the automatic production apparatus for floating yarn according to the present invention configured as described above are as follows.

Carbon, silicon, chromium, nickel, manganese, and the like are added to the melting furnace 1, which is a high frequency induction furnace, in accordance with a target composition and dissolved, and then a predetermined amount of molten metal is poured into the molten metal injection cup 31 of the injection loader 33. It is injected into the mold (4) in the molten metal injection position on the rotary table (5).

At this time, the mold 4 is rotated at a constant rotation speed before the injection of the molten metal. This is to apply a centrifugal force to the injected molten metal to move the non-metallic inclusions or oxides toward the inner diameter of the seal, and at the same time to produce a yarn having a compact and excellent roundness after finishing the casting.

In this way, the mold formed in the centrifugal casting part 3 is moved to the take-off position in the rotary table 5, and then the mold is opened in the thread take-out device 6, and then the mold is removed by the clamp of the first transfer part 10. It is then transferred to the weighing unit 7 to measure the weight of the yarn, and after that, the burr of the inner and outer diameters of the yarn generated during centrifugal casting is removed from the deburring unit 9, and then the conveyor 12 of the second transfer unit 11 is removed. Move to).

Here, the chamber cooling unit 13 is positioned on the conveyor 12 of the second transfer unit 11 to cool the centrifugally cast yarn, and by operating a plurality of blowers constituting the chamber cooling unit 13, an air cooling method To cool the yarn.

When the yarn being transferred through the conveyor 12 enters into the finishing processing unit 15, the inner diameter portion is finished after finishing finishing the finishing process in the state of standing vertically by the clamp, and then the grinding processing unit is carried out through the conveyor 12. While entering (17), the bottom portion of the seal is ground after being threaded upside down by the clamp and discharged.

As described above, the thread processed while passing through the grinding processing unit 17 is processed and discharged in a state in which a plurality of sets are placed on the surface plate 21 by the lapping processing unit 20, and then the outside through the conveyor 23. Is transferred to.

On the other hand, the material of the yarn in the above does not use a conventional high chromium (Cr) material, even if cooled in the air through the yarn cooling unit 13 occurs martensite (martensite) transformation of the matrix structure to obtain a sufficient strength By using the Ni-hard material that can be used, the heat treatment process can be eliminated during the post-process, thus shortening the overall thread production process.

Referring to the operation of the molten metal injection device in the automatic production process of floating room made through the above process, the injection of the molten metal in the centrifugal casting is very important. This is different in the fluidity of the molten metal according to the temperature and components of the molten metal, the defects such as shrinkage defects of the overlapping portion of the inner surface of the floating chamber, the occurrence of burr is intensified according to the fluidity. In addition, since the occurrence of defects on the inner surface of the chamber is different depending on not only the state of the molten metal but also the speed and position of the molten metal, it is important that the molten metal has a constant injection speed and molten metal injection position.

Accordingly, the molten metal injection apparatus applied to the present invention is configured to accurately move the injection loader 33 in a horizontal direction, a vertical direction, and a rotational direction through each servo motor 45, 55, 62, and a melting furnace. In (1), the injection loader 33 for moving the molten metal injection cup 31 until the centrifugal casting while floating the molten metal into the molten metal injection cup 31 and injecting it into the mold 5 more accurately in the vertical and horizontal movement and rotation directions. You can control it.

In the horizontal movement of the injection loader 33, the horizontal moving body 47, the vertical body 51, the injection loader 33 and the molten metal injection cup 31 are operated by the motor 45 of the horizontal transfer part 40. As a result, the molten metal floated in the melting furnace 1 is moved to the mold 4 position while moving back and forth along the linear rail 43.

The vertical movement of the injection loader 33 is performed by the vertical transfer unit 50. When the motor 55 is operated, the connecting shaft 56 rotates, and the chain power is rotated according to the rotation of the connecting shaft 56. After the rotational force is transmitted to the transmission mechanism 57, the injection loader 33 is moved up and down by the pinion / rack mechanism 58 which has received this rotational force. Accordingly, the molten metal is vertically lowered above the melting furnace 1 to remind the molten metal through the molten metal injection cup 31, and the injection loader 33 can be lowered to a position near the mold 5 on the upper side of the mold 4. .

Here, the rollers 53 supported on both sides of the injection loader 33 is one 53A is fixed, as shown in Figure 6, the other 53B is the state in which the elastic force is provided by the elastic member 54b Since the injection loader 33 is configured to be in close contact with the injection loader 33, the injection loader 33 can smoothly move up and down in a state in which the injection loader 33 is stably positioned between the two pairs of rollers 53 at all times, so that the molten metal injection operation is performed more. It can be done accurately and easily.

The rotation operation of the injection loader 33 is inclined to some extent as shown in FIG. 5 to inject the molten metal contained in the molten metal injection cup 31 into the mold 4, where the injection Since the lower end of the vertical body 51 which rotates together with the loader 33 is configured to be connected to the horizontal moving body 47 by the connecting shaft 56, the vertical body 51 and the injection loader 33 rotate. The molten metal can be injected into the mold 4 while the molten metal injection cup 31 is easily rotated without interference from the surroundings.

The floating seal automatic production apparatus according to the present invention configured and operated as described above is an automatic transfer device for molten metal injection process, centrifugal casting process, weighing process, deburring process, finishing process, grinding process, lapping process for producing a floating seal And because it is configured to proceed automatically through a conveyor, etc., it is possible to continuously operate the automatic production operation, there is an advantage that it is possible to mass production with a small number of workers, but also to secure high quality quality.

Claims (2)

A centrifugal casting part provided with a mold rotating on a rotary table to form a thread in a centrifugal casting method, and having a thread taking out device for extracting a thread formed in the mold on one side; A molten metal injection unit for injecting a molten metal from the melting furnace into a mold on the rotary table by a predetermined amount; A weight measuring unit for measuring the weight of the yarn taken out from the centrifugal casting unit; A deburring unit for removing burrs remaining in at least one of the inner diameter and the outer diameter of the weighing yarn in the weighing unit; A first transfer unit for transferring the yarn to the weight measuring unit and the deburring unit in the yarn taking out device; A second transfer unit for transferring the yarn after the burr is removed from the deburring unit through a conveyor; A finishing and grinding processing unit connected to the second transfer unit for finishing and grinding the yarn; Floating seal automatic production apparatus characterized in that it comprises a lapping processing unit which is processed and discharged after precision processing is transferred to the yarn processed in the grinding and grinding processing unit. The method of claim 1, And the second conveying part includes a thread cooling part for cooling the thread.

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