JPS6145989Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transfer press having a sliding die.

Conventional transfer presses process workpieces in one
Pressing was performed in a cycle, and the workpiece was clamped from both sides with holding claws held on a transfer bar, transported to the next process, and pressed in sequence to produce the finished product. For this purpose, the upper and lower dies are fixed to a ram and a bolster, respectively, and a transfer bar with holding claws is moved two-dimensionally or three-dimensionally within the narrow space between the upper and lower dies. Since the material was held from both sides and transported to the mold for the next process, there is no problem with workpieces that do not deform even when held by the holding claws or workpieces that are not divided. As shown in Figures 7A and B, the workpiece is punched with a large number of complicated punching grooves, or the workpiece is punched, bent, drawn, etc., and then divided into multiple pieces. In this case, the workpiece cannot be held and transported from both sides, and therefore cannot be processed using a transfer press.

The present invention was developed in view of the above, and consists of sliding molds arranged in parallel, and after pressing the workpiece, the material is transferred to the transfer position together with the lower mold.
This method is characterized by holding the workpiece from above and transporting it to a mold for the next process for transfer processing.

The content of the invention will be explained below with reference to drawings showing one embodiment of the invention. Figure 1 is a front view, Figure 2 is a front view, and Figure 2 is a front view.
FIG. 3 is a cross-sectional view of FIG. 1, and FIGS. 4 and 5 are cross-sectional views of FIG. 3, with the material conveying device removed. 1st
This is a material conveying device for conveying one workpiece shown in FIGS. In the figure, main body 1 of the device of the present invention
Fix the mounting bracket 11 to the upper front of the
A rectangular slide holder 12 is installed and fixed in the horizontal direction on the mounting bracket 11. A transfer guide 14 having guide grooves 13 above and below is installed horizontally on the front surface of the slide holder 12 in parallel with a bed 30 to be described later. Further, a cylinder bracket 15 that protrudes forward from the slide holder 12 is fixed to the left end of the slide holder 12, and a transfer cylinder 16 is attached to the cylinder bracket 15.
The tip of the cylinder shaft 17 of the transfer cylinder 16 is fixed parallel to the joint block 18.
The joint block 18 is fixed to a rectangular connecting plate 19. The material conveying devices 1, 1', 1'' are arranged in parallel at equal intervals on the connecting plate 19, and the material conveying devices 1, 1', 1'' are moved along the transfer guide 14 by the action of the transfer cylinder 16. Slide left and right. The structure of the material conveying device 1, 1', 1'' is such that a slider 21 having an auxiliary plate 20 on the back side of a U-shaped main body is fixed to a connecting plate 19, and a sliding block 22 is fixed on the back side of the auxiliary plate 20. The sliding block 22 is provided with a guide portion 23 that engages with the guide groove 13 of the transfer guide 14, and the sliding block 22 is slidable along the transfer guide 14 in the left-right direction in FIG. There are also slide shafts 24, 2 that can move the U-shaped protruding portion of the slider 21 up and down.
4' are arranged parallel to each other in the vertical direction, and a horizontal mounting plate 25 is installed at the lower end of each of them. The tip of the cylinder shaft 27 is attached via the connector 28. Then, a transfer tool 29 for conveying and holding the workpiece is attached to the lower surface of the horizontal plate 25. The method for holding the workpiece by the transfer tool 29 is selected from known methods such as vacuum suction, a magnet, or a plurality of claws depending on the material and shape of the workpiece. The material conveying device 1,
1', 1'', on the same plane as the upper surface of the bed 30 of the main body 10, the material conveying device 1,
The material feeding device 2, the transfer position of the sliding molds 3, 3', and the material discharging device 4 are installed at the same pitch spacing as 1', 1'', and the material conveying device 1, 1' is , 1'' are arranged to coincide with the transfer positions of the material supply device 2, the slide molds 3, 3', and the axes of the material discharge device 4, respectively, when they move leftward or rightward. Since the material supply device 2 and the material discharge device 4 are conventionally known devices, their explanation will be omitted. Furthermore, since the sliding molds 3 and 3' have a similar mechanism, the sliding mold 3 will be explained below. As shown in Figures 2 to 5,
A bed 30 is horizontally fixed to the main body 10, and a lower die plate 32 positioned by a hook-shaped presser foot 31 is fixed onto the bed 30.
A plurality of guide posts 34 are erected on the lower die plate 32, and the upper die plate 33 is held slidably in the vertical direction at the upper part of the guide post 34, and the step portion below the guide post 34 and the upper die plate 3
A compression spring 35 is provided between the lower ends of the die plate 33 to always urge the upper die plate 33 upward. Further, the upper die plate 33 is connected to a cylinder 3 fixed to the upper part of the main body 10.
The upper die 40 is fixed to the lower surface of the upper die plate 33, and the upper die 40 is fixed to the punch holder 41 and the punch holder 41. The punch 42 is made up of a punch 42. Further, the upper die plate 33 is provided with a plurality of guide rods 43 that are vertically slidable, and a stripper plate 45 having a through hole 44 through which the tip of the punch 42 can pass is installed at the lower end of the guide rod 43. Ru. A compression spring 46 is inserted between the upper die plate 33 and the stripper plate 45 to constantly bias the stripper plate 45 downward. Further, a plurality of guide pins 47 are provided on the stripper plate 45 so as to protrude downward, and the tips of the guide pins 47 are tapered 48. On the other hand, a hook-shaped guide rail 4 is provided on the lower die plate 32.
9, 49' are fixed, and the guide rails 49, 4
A sliding direction is defined in the longitudinal direction of 9', and a lower mold 50 that slides on the lower die plate 32 is placed thereon.
The lower mold 50 includes a die holder 51 and a die 52 fixed on the die holder 51. A plurality of guide bushes 53 are installed in the die holder 51, and a through hole 54 is vertically penetrated through the center of the guide bush 53, and the through hole 54 has the same diameter as the guide pin 47.
When the guide pin 47 is inserted into the through hole 54 of the guide bush 53 through the upper die plate 33 and the stripper plate 45 due to the action of the cylinder 36 installed on the upper part of the cylinder 36, the punch 42 and the die 52 correspond to the punch 42. The lower mold 5 is placed at a position (press molding position) where the axes of the processed holes 55 are aligned.
Determine the position of 0. Furthermore, 56 is a die joint attached to the end face of the die holder 51, through which a through hole 57 passes in the vertical direction. Further, as a drive mechanism for sliding the lower mold 50, an L-shaped bracket 58 is attached to the bed 30 as shown in FIG. A transfer arm 62 whose central portion is attached at right angles to the cylinder shaft 60 via a mounting bracket 61 is attached to the tip of the cylinder shaft 60 of the front and rear cylinders 59.
A connect pin 63 is installed downward at the side end of 2 and is fixedly attached to the through hole 57, and the connect pin 63 is loosely engaged with the through hole 57. The present invention has the above structure, and in this state shown in FIG. 1, the transfer cylinder 16 operates, and the joint block 18 to which the cylinder shaft 17 is connected is
The connecting plate 19 is inserted to the right through the connecting plate 1
The material conveying device 1 held at 9 moves along the transfer guide 14 from a position above the transfer position outside the press molding position of the sliding die 3 to a position above the material supply device 2 and stops. . After the material supply device 2 is moved to the upper position, the vertical cylinder 26 is activated, and the slide shaft 24 passing through the slider 21 slides downward, so that the horizontal plate 25 is guided downward and moves to the material supply device 2. Then, the transfer tool 29 attached to the lower surface of the horizontal plate 25 receives the workpiece from the material supply device 2. After the transfer tool 29 receives the workpiece,
The horizontal plate 25 moves upward again by the action of the vertical cylinder 26, and the transfer tool 29 moves upward while holding the workpiece and stops. After the transfer tool 29 stops, the transfer cylinder 1 is moved again.
6 is activated, the material conveying device 1 is moved along the transfer guide 14 to a position above the transfer position of the sliding mold 3 shown in FIG. 1, and then stopped. In this state, the vertical cylinder 26 acts again to move the horizontal plate 25 downward, and the transfer tool 29 that holds the workpiece is moved so that the lower mold 50 is raised as shown in FIGS. 5 and 6. Die 5 moved from the press molding position below the mold 40 to the transfer position
Place the workpiece on top of 2. When the workpiece is placed on the die 52, the horizontal plate 25 is again raised by the action of the upper and lower cylinders 26, returning to the initial state shown in FIG. Die 5 in transfer position
When the workpiece is received at the predetermined position of 2, the front and rear cylinders 59 act to move the transfer arm 62 attached to the tip of the cylinder shaft 60, the connect pin 63, the through hole 57 where the connect pin 63 fits, and the die joint 56. The die holder 51 is connected to the guide rail 4 through
9, 49', and is moved to the press forming position under the upper die 40 and stopped. This position is set at a position where the axial center of the punch 42 and the axial center of the processed hole 55 of the die 52 substantially coincide with each other. Here, the cylinder 36 acts, and as the connector 38 descends, the upper die plate 33 descends along the guide post 34 while resisting the compression spring 35. First, the tips of the plurality of guide pins 47 attached to the stripper plate 45 so as to protrude downward face the through hole 54 of the guide bush 53, and then the die holder 51 is moved by the taper 48, and the guide pins 47,
The axes of the guide bushes 53 are aligned, and the guide pins 47 are aligned by lowering the die plate 33.
is inserted into the through hole 54. Therefore, when the lower die 50 is positioned below the upper die 40 due to the action of the front and rear cylinders 59, the axis of the machined hole 55 of the die 52 is almost aligned with the axis of the punch 42. By inserting the plurality of guide pins 47 into the through holes 54 of the guide bushes 53, the lower mold 5 is positioned at a position where the respective axes of the punches 42 and the processing holes 55 coincide.
0 is slightly moved and positioned. After that, the upper die plate 33 further descends and the stripper plate 45 comes into contact with the workpiece placed on the die 52 to fix the workpiece, and then the upper die plate 33
guide rod 4 while compressing compression spring 46.
Descend along 3. As a result, the punch 42 protrudes from the through hole 44 provided in the stripper plate 45 on the workpiece placed on the die 52, and cooperates with the processing hole 55 of the die 52 to perform punching, bending, drawing, etc.
Perform cutting, etc. After the above processing, the upper die plate 33 rises as the connector 38 rises due to the action of the cylinder 36, and then the upper die plate 3
3. The stripper plate 45, which is vertically installed on the guide rod 43, rises. As a result, the guide pin 47 attached to the stripper plate 45 is removed from the through hole bored in the guide bush 53, and the upper die plate 33 further rises and stops. After the press working with the punch 42 and die 52 is completed, the lower mold 50 of the sliding mold moves from the press molding position to the transfer position again by the action of the front and rear cylinders 59 and stops. At this point, the transfer cylinder 16 described above comes into play, and the material conveying device 1 moves from a position above the transfer position of the sliding mold 3 along the transfer guide 14 in order to receive the next workpiece. When moving to the upper position of the material supply device 2, at the same time, the material conveyance device 1', which is installed in parallel with the material conveyance device 1 on the connecting plate 19, moves from the position above the transfer position of the slide type mold 3' to the slide type. Move the mold 3 to a position above the transfer position. Here, the material conveying device 1' receives the processed material on the die 52 by the same operation as the material conveying device 1 described above, and then transfers it to the transfer position of the sliding mold 3' arranged in parallel next to it. The material is transported, and at the same time, the aforementioned material transport device 1 transports the workpiece from the material feed device 2 to the transfer position of the sliding mold 3, and thereafter the above operations are repeated.

The above description has been made using the drawing in which two sliding molds are arranged side by side, but it goes without saying that the number of sliding molds can be increased by the press working process of the workpiece.

In addition, when bending or drawing a workpiece in press processing, a knockout device is installed under the lower mold under the material conveyance device, if necessary, to make it easier to separate the processed product from the die. It is also possible to install the As explained above, the present invention consists of a plurality of sliding molds having a mechanism that allows the lower mold to move between the press forming position directly below the upper mold and the transfer position outside of the press molding position where the workpiece is transported. The newly installed transfer press has a mechanism that transports the workpiece at the front of the main body, and has a transfer bar that moves in two or three dimensions compared to the conventional transfer press, which grips the workpiece from both sides. Workpieces that have been press-formed with a large number of complex punching grooves that could not be processed with transfer presses or progressive presses, or that have been subjected to punching, bending, drawing, etc., are transferred to the next process.
This enables transfer press processing in which the workpiece is divided into a plurality of pieces and is held and transferred from the top. For this reason, by adopting the transfer press of this invention, products that were conventionally processed in each step using multiple presses or produced one part at a time, can be processed continuously using multiple presses. Furthermore, multiple parts can be manufactured at once, which is highly effective in improving work efficiency and safety.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the device of the present invention, Fig. 2 is a view of Fig. 1 with the material conveyance device removed, Fig. 3 is a cross-sectional view of Fig. 1, and Figs. 4 and 5 are Figure 3 is a diagram showing the - cross section, Figure 6 is a diagram showing the lower die in Figure 5 moved to the transfer position,
FIG. 7A is a diagram of an intermediate product pressed according to the present invention, and FIG. 7B is a diagram of a completed product. 1... Material conveyance device, 2... Material supply device, 3
...Press device, 4...Material discharge device, 14...
Transfer guide, 19... Connection plate, 40...
...Upper die, 41...Punch holder, 42...Punch, 50...Lower die, 51...Die holder, 52
……Thailand.

Claims (1)

[Scope of utility model registration request] In a transfer press that sequentially conveys and processes workpiece materials, there are multiple sliding molds installed in parallel on the bed of the main body and an upper mold of the sliding molds to sequentially process the workpieces. A driving body for driving, a driving body for driving the lower mold of the sliding mold, a transfer guide installed at the front of the main body perpendicularly to the sliding mold and parallel to the bed, and a transfer guide for driving the lower die of the sliding mold. A plurality of sliders that are slidably fitted into the arch guide, a driving body that drives the sliders, a transfer tool attached to the slider that conveys a workpiece, and a driving body that moves the moving tool up and down. The workpiece placed on the lower die at the transfer position of the sliding die is transferred to the press forming position and press formed,
A transfer press having a sliding die characterized in that after press forming, the lower die is transferred to a transfer position, and then the workpiece is transferred to the next process.