CN103817244A - Press fit die and lifting transmission mechanism thereof - Google Patents

Abstract

The invention discloses a compression mold and its lifting transmission mechanism, which comprises a lifting cylinder, a material transmission device and a lifting frame. The lifting cylinder is installed on the lower mold seat of the compression mold, and is located Below the four corners of the mold. Since the four corners of the die are at a higher position and the space below is larger, the safe distance between the lifting cylinder and the machine table can be ensured under the current closed height of the mold, and it is beneficial to increase the stroke of the lifting cylinder and ensure the lifting transmission mechanism After jacking up, it will not interfere with components such as pre-curved knife blocks. The lifting transmission mechanism also has a guide column to ensure the precision and stability of the workpiece jacking up. The lifting transmission mechanism provided by the invention is especially suitable for V-shaped parts. Compared with the prior art, the pressing mold including the lifting transmission mechanism does not need to change the closing height of the existing mold, so it can meet the requirements of one machine with multiple models. The requirements of mixed-line production of molds are conducive to reducing the cost of tooling development.

Description

A compression mold and its lifting transmission mechanism

technical field

The present invention relates to the field of lifting transmission mechanism, in particular to a lifting transmission mechanism of a pressing mold, and the invention also relates to a pressing mold including the above-mentioned lifting transmission mechanism.

Background technique

The hemming machine can be used for the hemming forming process of the automobile panel assembly, and can also be used for the hemming forming of other thin plate parts. The pressing mold on the edge binding machine is characterized by fast production cycle and stable quality. Among them: the pressing mold on the edge wrapping machine can realize the automatic production of transportation. If the type of edge wrapping machine is a device that can drag multiple molds, it can also realize the mixed line production of one machine and multiple models of molds.

As shown in Figure 7, it shows that the pressing mold generally includes an upper mold 1, a lower mold 2, a concave mold 3, a lifting transmission mechanism 4, a pressing mechanism 5, a pressing core 6, a wrapping structure 7, an outer plate guide 8, Inner plate guide assembly 9, upper and lower mold guide elements 10 and other structures. When working, in one stroke of the upper slider, put the glued inner and outer plates or other welded parts into the die 3 with precise positioning around the periphery through the manipulator, the upper binder plate falls, and the inner plate Guide and press the material. At the same time, the driver of the upper mold realizes the pre-bending of the outer panel by driving the pre-bending knife block on the pressing mechanism 5. The pre-bending knife block returns to the initial position after maintaining the pressure, and the pressing knife block falls. Complete the final press. After the pressing is completed and the upper mold 1 returns, the lifting transmission mechanism 4 installed on the lower mold base receives the induction signal, and the lifting cylinder 11 lifts up to drive the material transmission device 12 on the lifting frame 14 to lift up, and the motor and reducer 13 Start to drive the material conveying device 12 to output the workpiece. In order to ensure safe production, the cylinder in the lifting transmission mechanism needs to keep a safe distance of at least 15mm from the machine table during the working process, and ensure that the workpiece does not interfere with the opened pre-scimitar block and other components during the lifting transmission. precise.

Since the lowest point of the V-shaped compression molding is closer to the machine table, for the current lifting transmission mechanism, the lifting cylinder 11 is installed below the middle of the die, as shown in Figure 1, at the existing mold closing height It is difficult to meet the above safety production requirements. The method to solve this problem in the prior art is to increase the height of the forming die, so that the closed height of the mold is increased, thereby ensuring the safe distance between the cylinder and the machine table. At the same time, increase the jacking height of the cylinder belt transmission mechanism, so as to avoid interference with the opened pre-scimitar block and related components 011 during the workpiece transmission process. However, this technical method makes the closing height of the mold different from that of other pressing molds, which makes it impossible to realize the mixed-line production of pressing molds for one machine and multiple models, and also increases the development cost of corresponding tooling.

Therefore, more suitable technical means are needed to ensure the safe distance between the cylinder in the lifting transmission mechanism and the machine tool table, and the workpiece transportation process does not interfere with the opened pre-scimitar block and related components. Mixed line production of multi-model molds reduces the cost of tooling development.

Contents of the invention

The object of the present invention is to provide a press-fitting mold and its lifting transmission mechanism. The lifting transmission mechanism can ensure the safe distance between the lifting cylinder and the machine tool table, and does not interfere with the pre-bending after opening during the transportation of the workpiece. Interference between the knife block and related components, including the press-fit mold of the lifting transmission mechanism, can realize the mixed-line production of molds with multiple models on one machine, and reduce the cost of tooling development.

To achieve the above object, the present invention provides the following technical solutions:

A lifting transmission mechanism for press-fitting molds, including a lifting cylinder, a material transmission device, and a lifting frame, the material transmission device is fixed on the lifting frame, and the lower end of the lifting cylinder is installed on the press On the lower mold seat of the clamping mold, the upper end is connected with the lifting frame, and the lifting cylinder is located below the four corners of the die of the pressing mold.

Preferably, the lifting transmission mechanism has a guide column, the fixed end of the guide column is connected to the lifting frame, and the guide part is in clearance fit with the guide hole on the lower mold seat of the pressing mold.

Preferably, the fixed end of the guide column is threaded, and is threadedly connected with the lifting frame.

Preferably, there are two or more sets of guide posts.

Preferably, the lifting frame is a frame structure welded by a plurality of plate-shaped steel materials.

Preferably, the transmission axis of the material transmission device has an included angle smaller than 90 degrees with the horizontal direction.

Preferably, the material conveying device is connected to the lifting frame through bolts.

Preferably, the lifting cylinder is an induction cylinder.

The present invention also includes a pressing die, which includes the above-mentioned lifting transmission mechanism.

The beneficial effects of the present invention are:

In the above technical solution, the lifting transmission mechanism provided by the present invention includes a lifting cylinder, a material transmission device, and a lifting frame. The lifting cylinder is installed on the lower die base of the press-fit die, and is located below the four corners of the die of the press-fit die. Especially for V-shaped parts, compared with the middle part of the die, the four corners of the die are higher, and the space below it is larger. Therefore, the lifting cylinder is installed here, and the lifting cylinder can be guaranteed under the closed height of the existing die. The safety distance between the cylinder and the machine table. At the same time, it is beneficial to increase the stroke of the lifting cylinder to ensure that the workpiece will not interfere with the pre-scimitar block and related components after it is lifted. In addition, compared with the prior art, the press-fitting mold provided by the present invention does not change the closing height of the existing mold, meets the requirements of mixed-line production of molds for one machine and multiple vehicle models, and reduces tooling development costs.

Further, the lift transmission mechanism has a guide column, the fixed end of the guide column is connected to the lift frame, and the guide part is in clearance fit with the guide hole on the lower mold base of the press-fitting mold, which can ensure that the lift transmission mechanism It has good precision and stability during the upward jacking process, which more effectively prevents the lifting transmission mechanism from interfering with the opened pre-compressed scimitar and other components.

Further, the connecting end of the guide column has an external thread, which is threadedly connected with the lift frame, which simplifies the processing and assembly process of the guide column and the lift frame.

Further, there are two or more sets of guide columns to ensure better guiding effect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the accompanying drawings required in the embodiments, and further detail the specific embodiments of the present invention in conjunction with the accompanying drawings. Description, where:

Fig. 1 is the structural representation of existing compression mold lifting transmission mechanism;

Fig. 2 is a structural schematic diagram of the lifting transmission mechanism of the pressing mold provided by the present invention;

Fig. 3 is the assembly diagram of cylinder, lifting frame, guide post;

Figure 4 is a front view of the assembly of the lifting frame and the guide column;

Figure 5 is a top view of Figure 4;

Fig. 6 is the structural representation of guide post;

Fig. 7 is a sectional view of a press-fitting die applying the lifting transmission mechanism of the present invention

Marked in the picture above:

1-upper mold, 2-lower mold, 3-concave mold, 4-lifting transmission mechanism, 5-pressing mechanism, 6-pressing material core, 7-wrapping structure, 8-outer plate guide, 9-inner plate Guide components, 10-guiding components of the upper and lower molds, 011-pre-scimitar block and related components;

11-lifting cylinder, 12-material transmission device, 13-motor and shock absorber, 14-lifting frame, 15-guide column;

21-connecting part, 22-guiding part;

Detailed ways

Referring to FIG. 2 , the lifting transmission mechanism 4 provided by the present invention includes a lifting cylinder 11 , a lifting frame 12 , a material transmission device 13 , and a motor and a reducer 14 . Wherein, the material transfer device 23 is fixed on the lifting frame 12, the lower end of the lifting cylinder 11 is installed on the lower mold base of the press-fitting mold, and the upper end is connected with the lifting frame 12, and the lifting cylinder 11 is positioned on the press-fitting mold. Below the four corners of the die.

In the lifting transmission mechanism 4 of the present invention, the lifting cylinder 11 is installed under the four corners of the die. Since the four corners of the die are at a higher position, the installation space of the lifting cylinder 11 is larger. Under the closed height of the mold, the safe distance between the lifting cylinder 11 and the machine tool table is guaranteed, and it is beneficial to increase the stroke of the lifting cylinder 11, so as to prevent the lifting transmission mechanism 4 from colliding with the pre-scimitar block and the Correlation component 011 interferes. Compared with the existing technology, the lifting transmission mechanism provided by this technical solution is applied in the pressing mold, which avoids changing the closing height of the existing pressing mold, so it can meet the requirements of one machine and multi-model mixed line production, and at the same time The cost of tooling development is saved.

In order to enhance the lifting accuracy and stability of the lifting transmission mechanism, the lifting transmission mechanism 1 provided by the present invention has a guide column 15 , and the guide column 15 includes a connecting portion 21 and a guiding portion 22 . In the specific implementation process, the height of the guide column 15 and the heights of the above-mentioned connecting and guiding parts can be designed according to specific needs.

Wherein, the connecting part 21 of the guide column is fixedly connected with the lifting frame 12. In this embodiment, the connecting part 21 is provided with threads, and is fixed with the lifting frame 12 through threaded connection. This connection method makes the guiding column 15 and the lifting frame The processing and assembly process of the lifting frame 12 is simple and convenient. The guide portion 22 of the guide post is in clearance fit with the guide hole on the lower mold base of the press-fitting mold.

Specifically, the above-mentioned guide column 15 may also be fixed on the lifting frame 12 by means of bolt connection, welding or the like.

In order to ensure a good guiding effect, the above-mentioned guide columns can be arranged in two or more groups, and the arrangement form of each guide column in the lifting transmission mechanism 1 can be determined according to specific requirements.

In the above technical solution, the lifting frame 12 can directly adopt the form of a whole lifting installation plate, but this form has poor stability. To solve this problem, the lifting frame 12 of the lifting transmission mechanism 1 provided by the present invention is a frame structure welded by a plurality of steel materials, as shown in FIG. 7 . Wherein, the position where the lifting frame 12 is connected to the lifting cylinder 11 is relatively high, so as to facilitate the installation of the lifting cylinder 11 . Multiple pieces of steel materials are spliced by welding, so that the lifting frame 12 presents an irregular frame structure. Such arrangement enhances the stability of the lifting frame.

In order to make the structure of the above-mentioned lifting transmission mechanism 1 more compact and easy to arrange, in this embodiment, an angle less than 90 degrees will be set between the transmission axis of the material transmission device 13 and the horizontal line, so that the material transmission device 13 and the motor And the whole material transmission mechanism that speed reducer 14 forms is V-shaped.

The above-mentioned material transfer device 13 is fixedly connected with the lifting frame 11. Specifically, the two can be connected by welding, riveting, or other connection methods. In this embodiment, bolts are used to facilitate the disassembly of the material transfer device 13, which is convenient for lifting the lift frame. The lifting transmission mechanism is used in the lifting and conveying process of different profiles.

In order to ensure the fast response of the lifting cylinder 11 and the stability of the whole lifting process, the lifting cylinder 11 is selected as an induction cylinder, and all the lifting cylinders 11 in the lifting transmission mechanism 1 are connected in series. After the lifting cylinder 11 receives the jacking signal, all the lifting cylinders move simultaneously to realize the lifting of the lifting frame 12 .

The lifting transmission mechanism 1 of the present invention meets the safety distance between the lifting cylinder 11 and the machine tool table under the existing mold closing height by changing the jacking power source and its arrangement method, guiding method, etc., and ensures that the workpiece The assembly does not interfere with the opened pre-scimitar block and related components 011 during the jacking up process. Especially for the production of V-shaped compression molded parts, compared with the prior art, the compression mold provided by the present invention can solve the problem in the prior art that the mixed line production of one machine and multiple models cannot be realized, and reduces the development of tooling. the cost of.

Although the present invention has been described in conjunction with the above-mentioned embodiments, the present invention is not limited to the above-mentioned embodiments, but is only limited by the claims, and those skilled in the art can easily modify and change it without departing from it. The spirit and scope of the invention.

Claims (9)

1. A lifting transmission mechanism for press-fitting molds, comprising a lifting cylinder, a material transmission device, and a lifting frame, the material transmission device is fixed on the lifting frame, and the lower end of the lifting cylinder is installed on the On the lower mold base of the pressing mold, the upper end is connected with the lifting frame, and it is characterized in that the lifting cylinder is located below the four corners of the die of the pressing mold. 2. The lifting transmission mechanism according to claim 1, characterized in that, the lifting transmission mechanism has a guide column, the fixed end of the guide column is connected to the lifting frame, and the guide part is connected to the pressing frame. The guide holes on the lower mold base of the clamping mold are clearance fit. 3 . The lifting transmission mechanism according to claim 2 , wherein the fixed end of the guide column is threaded, and is threadedly connected with the lifting frame. 4 . 4. The lifting transmission mechanism according to claim 2, characterized in that there are two or more sets of guide posts. 5. The lifting transmission mechanism according to any one of claims 1-4, characterized in that, the lifting frame is a frame structure welded by a plurality of plate-shaped steel materials. 6. The lifting transmission mechanism according to any one of claims 1-4, characterized in that, the axis of the transmission shaft of the material transmission device and the horizontal direction have an included angle smaller than 90 degrees. 7. The lifting transmission mechanism according to any one of claims 1-4, characterized in that, the material transmission device is connected to the lifting frame through bolts. 8. The lifting transmission mechanism according to any one of claims 1-4, wherein the lifting cylinder is an induction cylinder. 9. A pressing die, characterized in that it comprises the lifting transmission mechanism according to any one of claims 1-8.

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