CN102179467A - Die change device for die of pressure machine - Google Patents

Abstract

The invention provides a mold changing device for a press machine applied in the technical field of molds. The mold changing device for a press machine includes an upper mold table (1), a lower mold table (2), and a mold changing device (3). The mold changing device (3) is set as a mold changing guide rod (4) with a rod-shaped structure, and more than one matching hole (5) is respectively set on the upper mold platform (1) and the lower mold platform (2) , the two ends of the mold changing guide rod (4) are respectively inserted into the matching holes (5) of the upper mold table (1) and the lower mold table (2). The mold changing device of the press mold of the present invention can not only shorten the mold changing time, improve the production efficiency, but also facilitate on-site operation. Since there is no need to lift the original mold changing device with a weight of more than 1 ton, the labor intensity of the operator is significantly reduced.

Description

A mold changing device for a press mold

technical field

The invention belongs to the technical field of molds, and more specifically relates to a mold changing device for press molds.

Background technique

For tire die forging, due to the wear and deformation of the die, the replacement die is very frequent during production. Usually, the thermoforming mold is first assembled in the mold base to form the upper and lower mold tables, and the upper and lower mold tables are bonded together by the mold changing device, and the mold table is lifted by the crane and placed on the mold changing trolley. Existing press mold as shown in accompanying drawing 3.

In the prior art, since the press is a fixed platform, there are many mold changing steps. Each time a mold changing is completed, the mold changing trolley needs to enter and exit the press twice, one of which is to take out or put into the mold changing device. Moreover, the movement of the mold changing trolley is not smooth, and the on-site operation is relatively difficult, and it takes up to 2 hours to change the mold at a time. Therefore, it is inefficient to use the traditional fixed-table die forging press mold replacement method, which affects the production rhythm. At the same time, the existing mold changing device is bulky and heavy, which brings great inconvenience to the operator during replacement.

Contents of the invention

The technical problem to be solved by the present invention is to provide a die changing device for presses that can improve the replacement efficiency of the upper and lower die tables and reduce the labor intensity when changing the dies.

To solve the technical problems described above, the technical solution adopted by the present invention is:

The present invention relates to a mold changing device for a press mold, comprising an upper mold table, a lower mold table, and a mold changing device. The mold changing device is set as a rod-shaped mold changing guide rod. More than one matching hole is respectively arranged on the mold platform, and the two ends of the mold changing guide rod are respectively inserted into the matching holes of the upper mold platform and the lower mold platform.

The guide rod for mold change is set to a structure in which the diameter of the middle part of the guide rod is larger than that of the end part I of the guide rod and the end part II of the guide rod. Between them, they are all arranged as stepped surface structures, and the above-mentioned guide rod end I and guide rod end II are both arranged as a structure matching the size of the assembly hole.

The matching holes include the matching hole I on the upper mold table and the matching hole II on the lower mold table, and the matching holes I and II are respectively arranged to be distributed along the surface of the upper mold table and the surface of the lower mold table. One structure, the matching hole I and the matching hole II are set as a structure that can overlap when the upper mold table and the lower mold table are attached.

The guide rod end I and the guide rod end II are arranged as a structure in which the circumferential size of the edge position of the guide rod gradually decreases.

The edge of the guide rod is configured as an arc surface structure.

Adopt technical scheme of the present invention, can obtain following beneficial effect:

The press die changing device of the present invention can shorten the time for each die changing by about 40 minutes. The mold changing device of the press mold of the present invention can not only shorten the mold changing time, improve the production efficiency, but also facilitate on-site operation. The structure of the present invention obviously reduces the labor intensity of operators because it does not need to lift the original mold changing device with a weight of more than 1 ton.

The press die changing device of the present invention is small in size and can be manually moved directly; convenient and flexible in assembly, high in reliability; low in manufacturing cost; and high in work efficiency.

Description of drawings

The following is a brief description of the contents expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is the structural representation of press die changing device of the present invention;

Fig. 2 is the structural representation of mold changing guide rod;

Fig. 3 is the structural representation of former press die changing device;

Fig. 4 is a schematic diagram of the process of replacing the worn mold of the existing press mold (two in and two out of the mold changing trolley):

Figure 5 is a schematic diagram of the process of replacing the existing press mold with a new mold (two in and two out of the mold changing trolley):

Marks in the figure: 1. Upper die table; 2. Lower die table; 3. Die changing device; 4. Die changing guide rod; 5. Fitting hole; 6. Middle part of guide rod; 7. End of guide rod I; 8 , the end of the guide rod II; 9, the fitting hole I; 10, the fitting hole II; 11, the surface of the upper mold table; 12, the surface of the lower mold table; 13, the edge of the guide rod.

Detailed ways

Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between each part, the role and working principle of each part, etc. Detailed instructions:

As shown in accompanying drawing 1-accompanying drawing 3, the present invention is a kind of mold changing device of press machine, comprises upper mold platform 1, lower mold platform 2, mold changing device 3, and described mold changing device 3 is arranged as rod-shaped The structure of the mold change guide rod 4, the upper mold table 1 and the lower mold table 2 are respectively provided with more than one matching hole 5, and the two ends of the mold change guide rod 4 are respectively inserted into the upper mold table 1 and the lower mold table. In the matching hole 5 of the mold table 2.

The mold change guide rod 4 is set to a structure in which the diameter of the middle part 6 of the guide rod is larger than that of the end part I7 of the guide rod and the end part II8 of the guide rod, and the middle part 6 of the guide rod and the end part I7 of the guide rod Between Ⅱ8 and Ⅱ8, they are all set to a stepped surface structure, and the described guide rod end Ⅰ7 and guide rod end Ⅱ8 are all set to a structure that matches the size of the assembly hole 5. During the design, the tolerance between the mold change guide rod 4 and the assembly hole 5 is reasonably designed, so as to facilitate the accurate assembly and positioning of the guide rod 4 and the assembly hole 5 on the upper and lower mold tables.

The matching hole 5 includes the matching hole I9 on the upper mold table 1 and the matching hole II10 on the lower mold table 2, and the matching hole I9 and the matching hole II10 are respectively arranged along the surface 11 of the upper mold table and the lower mold table. Multiple structures are distributed around the surface 12, and the matching holes I9 and II10 are set as structures that can overlap when the upper mold table 1 and the lower mold table 2 are bonded together.

The guide rod end I7 and the guide rod end II8 are set to a structure in which the circumferential size at the edge 13 of the guide rod gradually decreases, so as to ensure that the guide rod will not slide laterally when the upper and lower mold tables are closed, which is convenient for assembly.

The guide rod edge 13 is configured as a circular arc surface structure.

The press die changing device of the present invention replaces the original die changing device with the die changing guide rod 4, and is applied to a fixed-table die forging press. The optimal structure of the die changing guide rod is set to four, and the The schematic diagram of the structure is shown in Figure 1.

The weight of the mold changing guide rod 4 of the present invention is only equivalent to a dumbbell, which can be carried manually, thereby saving a trip of the mold changing trolley.

The mold replacement process of the press die changing device of the present invention is as follows:

The thermoforming mold is first assembled in the mold base to form the upper mold table 1 and the lower mold table 2, and the mold change guide rod 4 connects the upper mold table 1 and the lower mold table 2, so that the two are bonded together. At this time, the driving Lift the upper and lower mold tables and put them on the mold changing trolley, and the mold changing trolley loads the upper and lower mold platforms and the mold changing guide rod 4 into the press together.

Then, put down the upper beam of the press, and assemble the upper mold table 1 to the upper beam of the press. After the upper mold table 1 is assembled, the upper beam of the press is lifted, and the mold change guide rod 4 on the mold table is manually taken out. Mold table 2, after the upper and lower mold tables are assembled, the trolley is driven out to complete a mold change.

The same process is applicable to take out the worn mold that needs to be replaced. After the mold table is damaged, lift the upper beam of the press, push the trolley in, then put the upper and lower molds on the mold changing trolley, place the mold changing guide rod 4 on the lower mold table 2, and then put it down During the bonding process of the upper beam, the upper mold table 1 and the lower mold table 2, the guide rod end I7 and the guide rod end II8 of the mold changing guide rod 4 are respectively inserted into the matching hole I9 on the upper mold table 1 and the lower mold table Fitting hole II10 on the 2, at this time, disassemble the upper mold table 1 and the upper beam, lift the upper beam, and then push out the upper and lower molds on the mold changing trolley.

The mold changing device of the present invention has a light structure and can replace the bulky original mold changing device. After the upper mold table is installed, the mold changing guide rod 4 can be taken out manually, thereby saving the movement of a trolley going in and out.

The structure of the present invention can shorten the mold changing time by about 40 minutes, and significantly reduce the labor intensity of the operators, since the original mold changing device with a lifting weight of more than 1 ton is not needed.

Compared with the traditional fixed-table die forging press die replacement method, the press die changing device of the present invention can shorten the die changing time, improve production efficiency, and facilitate on-site operation.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner, as long as various improvements are adopted in the method concept and technical solutions of the present invention, or the present invention is converted without improvement. The ideas and technical solutions of the invention that are directly applied to other occasions are within the protection scope of the present invention.

Claims (5)

1. A mold changing device for a press, comprising an upper die table (1), a lower die table (2), and a die changing device (3), characterized in that: the die changing device (3) is set to a rod-shaped structure of the mold change guide rod (4), the upper mold table (1) and the lower mold table (2) are respectively provided with more than one matching hole (5), the two mold change guide rods (4) The ends are respectively inserted into the matching holes (5) of the upper mold table (1) and the lower mold table (2). 2. The mold changing device for a press mold according to claim 1, characterized in that: the mold changing guide rod (4) is set such that the diameter of the middle part (6) of the guide rod is larger than that of the end part I (7) of the guide rod and The structure of the guide rod end II (8), the middle part (6) of the guide rod, the guide rod end I (7), and the guide rod end II (8) are all set as a stepped surface structure, Both the guide rod end I (7) and the guide rod end II (8) are configured to match the size of the assembly hole (5). 3. The press die changing device according to claim 1 or 2, characterized in that: the matching hole (5) includes the matching hole I (9) on the upper die table (1) and the lower die table ( 2) The matching hole II (10) on the top, the matching hole I (9) and the matching hole II (10) are respectively arranged to distribute a plurality of The structure of the matching hole I (9) and the matching hole II (10) is set as a structure that can overlap when the upper mold table (1) and the lower mold table (2) are attached together. 4. The press die changing device according to claim 3, characterized in that: the end of the guide rod I (7) and the end of the guide rod II (8) are set as the circumference of the edge (13) of the guide rod A structure that gradually decreases in size. 5. The press mold changing device according to claim 4, characterized in that the edge (13) of the guide rod is configured as a circular arc surface. the

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