KR0137994Y1 - Workpiece feeder - Google Patents

Abstract

The present invention relates to a workpiece transfer apparatus, and more particularly, to a workpiece transfer apparatus that allows a plurality of workpieces having the same shape to be moved at the same time to perform a multi-stage machining process simultaneously.

The workpiece transport apparatus according to the present invention is provided with a plurality of workpiece fixing fixtures for fixing a workpiece at a predetermined position, a worktable having a longitudinal passage, a lengthwise installation under the workbench, and in some cases the length of the worktable. A conveying member having a plurality of conveying clamps moved along a passage in a direction at equal intervals with the workpiece fixing fixture, a horizontal moving mechanism for horizontally moving the conveying member, and a vertical moving mechanism for vertically moving the conveying member. Has a configuration.

Description

Workpiece feeder

1 is an explanatory diagram for explaining the configuration of the workpiece transport apparatus according to the present invention.

2 is an explanatory diagram for explaining a fixed clamp of the first FIG.

Figure 3 is an explanatory diagram for explaining the workpiece installed in the workpiece transport apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

10: workpiece 11: fixed clamp insertion groove

12: feed clamp insertion groove 20: fixed clamp

21: cylinder 22: piston

23: hydraulic chamber 24: jaw coupling groove

25: jaw 30: workbench

31: loading station 32: first station

33: second station 34: third station

35: fourth station 36: unloading station

37: long passage 40: transfer clamp

50: conveying member 60: horizontal moving mechanism

61: horizontal cylinder 62: horizontal rod

63: bearing 64: connecting member

70: vertical movement mechanism 71: vertical cylinder

72: Piston Rod 73: Vertical Rod

The present invention relates to a workpiece transfer apparatus, and more particularly, to a workpiece transfer apparatus that allows a plurality of workpieces having the same shape to be moved at the same time to perform a multi-stage machining process simultaneously.

Parts such as transmission cases, cylinder blocks, and cylinder heads in automobiles need not only high precision but also mass production. It is very time-consuming to process such parts requiring mass production by general machine tools, and it is difficult to carry out several stages of processing at the same time. As a result, the necessary processing machines are installed in order according to the work order of the work stations in several work stations, and several work processes can be carried out simultaneously by installing several workpieces at regular intervals using a transfer machine. Make sure As a transfer machine, a conveyor type using a conveyor circulating along a predetermined path is mainly used. Such a conveyor-type transfer machine takes a lot of space and has a disadvantage in that it is difficult to fix the workpieces installed at regular intervals by moving them to the correct position.

An object of the present invention is to provide a workpiece transporting device for quickly moving and fixing a plurality of workpieces to the correct position.

The object of the present invention is to fix the workpiece at a predetermined position to perform a predetermined machining process, and in the workpiece transfer device for moving the fixed workpiece as needed, for fixing the workpiece at a predetermined position Workpiece fixing fixtures are installed at a plurality of intervals at regular intervals, the worktable having a longitudinal passage, installed in the longitudinal direction in the lower portion of the workbench, the feed clamps are moved along the longitudinal passage of the worktable in some cases the workpiece fixing fixture It is achieved by a workpiece conveying apparatus comprising a conveying member which is provided with a plurality of equal intervals in the same interval, a horizontal moving mechanism for horizontally moving the conveying member, and a vertical moving mechanism for vertically moving the conveying member.

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

1 is an explanatory view for explaining the configuration of the workpiece transport apparatus according to the present invention, shown in Figures 1 (a) to 1 (d), respectively, depending on the viewing direction and the cross-sectional position. Figure 1 (a) is a front sectional view of the workpiece transfer device according to the present invention, Figure 1 (b) is a plan view of the workpiece transfer device according to the present invention, Figure 1 (c) is a cross-sectional view taken along the line aa of Figure 1 (a) 1 (d) is a cross-sectional view taken along line bb of FIG. 1 (a). As shown in FIG. 1, the workpiece transport apparatus according to the present invention includes a work bench 30 on which a plurality of clamping clamps 20 for fixing the workpiece 10 are installed. This worktable 30 can be divided into several stations according to the machining order of the workpiece 10 as shown in FIG. 1 (b). The work bench 30 includes a loading station 31 to which an initial workpiece 10 is supplied for processing, a first station 32 on which an initial machining process is performed, and a second on which a machining process is performed. The station 33 is divided into a third station 34, a fourth station 35 in which the last machining process is performed, and an unloading station 36 for recovering the workpiece 10 which has undergone all the machining processes. Of course, each station can be further increased or decreased as there are more and fewer processes. In the center portion of the work table 30 is formed a passageway 37 to allow the transfer clamp 40 to be moved. The work table 30 may be provided separately from each other on both sides of the long passage 37. The stationary clamps 20 are installed at the stations of the work bench 30. These fixing clamps 20 are for fixing the work 10, it is good to install about four at each station. That is, one work piece 10 is fixed to the corresponding station by four fixing clamps 20 installed in each station. Fixing clamps 20 installed in one station is a workpiece fixing fixture for fixing one workpiece (10). The fixed clamps 20 installed in one station should be installed in consideration of the positions of the fixed clamps 20 of neighboring stations so that the workpieces 10 of each station can maintain a constant interval. The fixing clamp 20 is inserted into a groove of a predetermined shape previously formed in the workpiece to fix the workpiece 10. The fixing of the workpiece 10 will be described in more detail with reference to FIG. The lower portion of the work table 30, the transfer member 50 is provided with a plurality of transfer clamps 40 at a predetermined interval in the longitudinal direction of the work table (30). The transfer clamps 40 should be installed at equal intervals between the centers of the stations. However, in some cases, it may be changed according to the position, number, etc. of the groove into which the transfer clamp 40 formed in advance in the workpiece 10 installed in the fixed clamps 20 is inserted. The conveying member 50 is supported by the horizontal moving mechanism 60 and the vertical moving mechanism 70 which are respectively fixed thereunder. The horizontal movement mechanism 60 is provided with the horizontal cylinder 61 installed horizontally in the same direction as the conveyance member 50. As shown in FIG. The horizontal rod 62 is coupled to the horizontal cylinder 61. The horizontal rod 62 is provided with a connecting member 64 fixed to the conveying member 50 and provided to be movable up and down by the bearing 63. The horizontal rod 62 is horizontally movable according to the magnitude of the pressure of the fluid inside the horizontal cylinder 61. The movement distance of the horizontal rod 62, i.e., the stroke of the horizontal rod 62, is preferably equal to the distance between the centers of the neighboring workpieces 10, and may be made larger if necessary. Two vertical moving mechanisms 70 are provided at predetermined intervals. As shown in FIG. 1 (b), the vertical movement mechanism 70 is coupled to the vertical cylinder 71 and the vertical cylinder 71 vertically fixed in place, and moves up and down by internal hydraulic pressure 62. And a vertical rod 73 in contact with the transfer member 50 and connected to the piston rod 72 to vertically move.

In the workpiece transfer device according to the present invention having such a configuration, when the machining process at the corresponding station for the workpiece fixed to each station is finished, the fixed clamp 20 is operated to release the workpiece 10 from the fixed state. . In this state, the vertical movement mechanism 70 is operated to move the transfer member 50 to the left. Accordingly, the transfer clamps 40 installed on the transfer member 50 at predetermined intervals are inserted into the transfer clamp insertion grooves 12 previously formed in the workpieces 10 to hold the workpieces 10. The vertical movement mechanism 70 is further operated so that the workpieces 10 are removed from the fixed clamp 20, and then the horizontal rod 62 is operated to horizontally move the transfer member 50. Of course, when the vertical rod 73 is moved upward, the connecting member 64 is also moved upward. Accordingly, the workpieces 10 come to the positions of the stations where the next machining process is to be performed. In such a state, the vertical movement mechanism 70 is operated to move the transfer member 50 downward to fix the work 10 to the fixed clamp 20. Then, loosen the transfer clamp 40 and move the transfer member 50 further down and then operate the horizontal moving mechanism 60 to move the transfer member 50 to its original position. This moves each workpiece one station. After this process, a new workpiece 10 is loaded into the loading station 31 and the unloaded workpiece of the unloading station 36 is completed. By repeating the same process as described above, it is possible to quickly move and fix a large number of workpieces to the correct position, and to perform all the machining processes at once.

2 is an explanatory diagram for explaining a fixed clamp of the first FIG. Device. As shown in FIG. 2, the fixed clamp 20 includes a cylinder 21. The fluid is filled inside the cylinder 21, and the piston 22 is coupled thereto. The hydraulic chamber 23 is formed above this piston 22. In the hydraulic chamber 23, a jaw engaging groove 24 in a horizontal direction is formed, and a jaw 25 is coupled thereto. Such jaws 25 should be installed at least two or more. That is, when the piston 22 moves upward, the pressure inside the hydraulic chamber 23 is increased, and the jaws 25 are moved to the outer side by the force. When the jaws 25 are moved outwardly while the fixing clamp 20 is inserted into the grooves formed on the bottom surface of the workpiece, the outer surfaces of the jaws 25 come into contact with the inner side walls of the grooves of the workpiece. The workpiece is fixed to the clamping clamp. Such a structure of the fixed clamp 20 can also be adopted in the transfer clamp.

3 is an explanatory diagram for explaining the workpiece installed in the workpiece transport apparatus according to the present invention. As shown in FIG. 3, two fixed clamp insertion grooves 11 are formed on the lower surface of the work 10. The fixed clamp insertion grooves 11 should be formed in accordance with the position, size, and number of the fixed clamps installed in the workpiece feeder. In the apparatus of FIG. 1, four stationary clamps of one station are provided, so that the workpiece for working therein must be formed at four positions, that is, four grooves respectively corresponding to the stationary clamps. Of course, one groove may be formed to accommodate all the clamping clamps depending on the type of the workpiece. The transfer clamp insertion groove 12 is formed between the fixed clamp insertion grooves 11. The transfer clamp insertion groove 12 is preferably formed in the left and right centers of the lower surface of the workpiece as shown in FIG. The conveying clamp insertion groove 12 is used to catch the workpiece when the conveying clamp is inserted when the workpiece 10 is moved to the neighboring station.

As described above with reference to FIGS. 1 to 4, the workpiece transport apparatus according to the present invention fixes the workpiece at the correct position because the clamp is fixed in place, and also quickly moves the workpiece to the neighboring station. In addition, the workpiece transfer device according to the present invention has the advantage that the overall volume is relatively small because the stroke of the transfer member may be shorter than the conventional transfer machine.

Claims (12)

In a workpiece transfer device for fixing a workpiece at a predetermined position to perform a predetermined machining process and moving the fixed workpiece as necessary, the workpiece fixing fixtures for fixing the workpiece at a predetermined position are provided at a predetermined interval. A work table having a plurality of installations and having a longitudinal passage; A conveying member which is installed in the longitudinal direction at the lower part of the work table, and in which case a plurality of conveying clamps which are moved along the longitudinal passage of the work table are provided at the same interval as the workpiece fixing fixtures; A horizontal moving mechanism for horizontally moving the transfer member; And a vertical moving mechanism for vertically moving the transfer member. The workpiece transport apparatus of claim 1, wherein the workpiece fixing fixtures are fixed clamps having jaws which are respectively installed at predetermined intervals on the work objects on both sides of the passage in the longitudinal direction, and move in the horizontal direction in some cases. 3. The workpiece transport apparatus of claim 2, wherein the fixing clamps are respectively inserted into first grooves having a predetermined shape formed on a lower surface of the workpiece to fix the workpiece. The fixed clamp of claim 3, wherein the fixed clamp has a first cylinder having a cylindrical inner space filled with a fluid, a first piston moving along the inner space of the cylinder, and a predetermined position of the first cylinder communicating with the inner space. It is installed horizontally to the workpiece transport apparatus characterized in that it comprises a jaw that moves horizontally in accordance with the magnitude of the pressure of the internal space of the first cylinder. According to claim 4, The transfer clamp is a second cylinder having an inner space filled with a fluid, a second piston moving along the inner space of the second cylinder and a predetermined position of the second cylinder in communication with the inner space It is installed horizontally to the jaw to move horizontally in accordance with the size of the pressure of the inner space of the second cylinder structure, which can be inserted into a predetermined second groove formed in the workpiece in some cases to clamp the workpiece Workpiece transfer device characterized in that the. According to claim 5, The horizontal movement mechanism is installed in the longitudinal direction of the conveying member, coupled to the third cylinder and the third cylinder having an internal space filled with fluid, the hydraulic pressure of the internal space of the third cylinder And a horizontal rod moving horizontally and horizontally coupled to the horizontal rod according to the size of the horizontal rod, and having a connecting member horizontally moved by the horizontal rod. 7. The workpiece transport apparatus according to claim 6, wherein the horizontal rod has a stroke of the same size as a distance between the centers of the workpieces adjacent to each other. The method of claim 7, wherein the vertical movement mechanism is installed in a direction perpendicular to the longitudinal direction of the transfer member, coupled to the fourth cylinder and the fourth cylinder having an inner space filled with the fluid, the fourth cylinder Workpiece transfer device comprising a piston rod that moves up and down according to the size of the hydraulic pressure of the internal space and a vertical rod coupled to the piston rod to move vertically. The workpiece transport apparatus of claim 1, wherein the horizontal movement mechanism is vertically moved together with the transfer member by the operation of the vertical rod while being connected to the transfer member. 9. The workpiece transport apparatus according to claim 8, wherein two vertical movement mechanisms are provided at predetermined intervals on said transfer member. 11. The workpiece transport apparatus of claim 10, wherein the vertical rod of the vertical movement mechanism has a larger stroke than the sum of the depth of the first groove and the depth of the second groove. 8. The workpiece transport apparatus of claim 7, wherein the vertical movement mechanism is connected to the transfer member to move horizontally by the operation of the horizontal rod.