A mold mechanism for improving the rotation angle of a double-symmetrical plate

Abstract

The present invention discloses a mold mechanism for improving the rotation angle of a bisymmetrical plate, comprising a lower mold body, on which two sets of rotation adjustment mechanisms for supporting the symmetry of the plate are provided, the rotation adjustment mechanisms comprising a lifting cylinder, a rotating cylinder, and an upper bracket and a lower bracket that are hingedly connected, the upper bracket being located above the lower bracket, the lifting cylinder and the rotating cylinder both being provided in the lower mold body, the upper end of the lifting cylinder being connected to the lower bracket, and the upper end of the rotating cylinder being connected to the upper bracket. For bisymmetrical plates that are subject to process restrictions, the adjustment of the rotation angle of the product after the drawing process can be greatly improved, that is, without adding additional molds, the mold structure of the post-drawing process can be optimized, and the consistency of the bisymmetrical output of the product can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of stamping dies, and in particular to a die mechanism for improving the rotation angle of a bisymmetrical plate. Background Art

[0002] In the current stamping process design of automobile molds, there are many structures that can be double-stamped, such as inner and outer door panels, fenders, and side panels.

[0003] In conventional automotive parts stamping, the stamping angles vary across different processing steps for the same product due to factors such as material utilization, trimming, and flanging. This necessitates adjusting the sheet metal rotation angle during processing. For bisymmetrical parts, the stamping process typically utilizes a single die, and the two sheets are combined into one piece after drawing. To ensure consistent product symmetry throughout production, the rotation angles in subsequent steps are significantly constrained.

[0004] For example, if the stamping angle of the door inner panel drawing process is determined, if it is produced according to this method, the subsequent process of hole flipping will have a negative angle. Since the product is integrated after forming, the subsequent process plate will not be able to rotate left and right along the stamping direction, otherwise it will cause asymmetry between the left and right products. Therefore, the machine tool can only rotate back and forth along the feeding direction, but this method cannot solve the existing negative angle. Due to the limitations of customers and the number of product processes, it is not possible to add a separate rotation angle process. For some more extreme cases of trimming and flanging where the rotation angle cannot be solved, it is necessary to change the arrangement of symmetrical parts in the mold design. At this time, it will also affect material utilization and sheet material size, causing a series of stamping problems. Therefore, there is an urgent need for a mechanism to quickly improve the rotation angle of the stamping process of double symmetrical parts. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a mold mechanism that improves the rotation angle of a bisymmetrical plate, which can greatly improve the adjustment of the rotation angle of the product after drawing.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The mold mechanism improved into a double-symmetrical plate rotation angle includes a lower mold body, and the lower mold body is provided with two sets of rotation adjustment mechanisms for supporting the symmetry of the plate. The rotation adjustment mechanism includes a lifting cylinder, a rotating cylinder, and an upper bracket and a lower bracket that are hingedly connected. The upper bracket is located above the lower bracket. The lifting cylinder and the rotating cylinder are both arranged in the lower mold body, the upper end of the lifting cylinder is connected to the lower bracket, and the upper end of the rotating cylinder is connected to the upper bracket.

[0008] Further:

[0009] The side of the upper bracket is provided with a side positioning plate for positioning the plate.

[0010] The upper bracket is provided with a group of polyurethane blocks for positioning the panels.

[0011] The two lifting cylinders of the two sets of rotation adjustment mechanisms are connected through pipelines.

[0012] The two rotary cylinders of the two sets of rotary adjustment mechanisms are connected via a pipeline.

[0013] The lower part of the upper bracket is hinged to one end of the lower bracket through a rotating shaft.

[0014] The lower bracket is a hollow flat plate, and the upper end of the rotary cylinder passes through the flat plate and is connected to the lower part of the upper bracket.

[0015] A cache block is provided on the lower bracket corresponding to the lower portion of the upper bracket.

[0016] The upper end of the rotary cylinder is hingedly connected to the other end of the lower bracket.

[0017] The upper bracket is a hollow plate.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The mold mechanism structure for improving the rotation angle of the double-symmetrical plate is reasonably designed. For the double-symmetrical plate that is restricted by the process, it can greatly improve the adjustment of the rotation angle of the product after the drawing process. That is, without adding additional molds, the mold structure of the post-drawing process can be optimized, and the consistency of the double-symmetrical output of the product is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following is a brief description of the contents and symbols in the drawings of this specification:

[0021] Figure 1 This is a distribution diagram of the mechanism of the present invention in the mold.

[0022] Figure 2 This is a structural diagram of the rotary adjustment mechanism of the present invention.

[0023] Figure 3 This is a schematic diagram of the working principle of the rotary adjustment mechanism of the present invention. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be further explained in detail below through description of embodiments with reference to the accompanying drawings.

[0025] like Figures 1 to 3As shown, the mold mechanism improved into a double-symmetrical plate rotation angle includes a lower mold body, and the lower mold body is provided with two sets of rotation adjustment mechanisms 1 for supporting the symmetry of the plate. Two symmetrical grooves are provided on both sides of the lower mold body, and the rotation adjustment mechanisms are arranged in the grooves on the corresponding sides; they are distributed left and right along the symmetry center line of the product, so that the plate can remain symmetrical along the symmetry center line after the rotation angle.

[0026] The rotation adjustment mechanism includes a lifting cylinder 103, a rotating cylinder 104, and an upper bracket 101 and a lower bracket 102 that are hingedly connected. The upper bracket is located above the lower bracket. The lifting cylinder and the rotating cylinder are both arranged in the lower mold body. The upper end of the lifting cylinder is connected to the lower bracket, and the upper end of the rotating cylinder is connected to the upper bracket.

[0027] The side of the upper bracket is provided with a side positioning plate 105 for positioning the panel and a group of polyurethane blocks 106; the side positioning plate is an L-shaped plate, located at the edge of the upper bracket, and the polyurethane block is set at the corner of the panel. The panel is stably positioned by the cooperation of the side positioning plate and the polyurethane block.

[0028] The two lifting cylinders of the two sets of rotation adjustment mechanisms are connected through pipelines; the two rotating cylinders of the two sets of rotation adjustment mechanisms are connected through pipelines; the synchronization of rotation adjustment is achieved through the interconnected design, so that the plate can remain symmetrical along the symmetry center line after the rotation angle.

[0029] The lower part of the upper bracket 101 is hinged to one end of the lower bracket 102 through the rotating shaft 107; the upper end of the rotary cylinder is hinged to the other end of the lower bracket, with a compact structure and a large adjustment angle range.

[0030] Both the upper bracket 101 and the lower bracket 102 are hollowed-out plates, making them lightweight. The upper end of the rotary cylinder passes through the hollowed-out lower bracket and is hingedly connected to the lower portion of the upper bracket, resulting in a compact structure that takes up little space and is easy to arrange and install. Furthermore, a buffer block is provided on the lower bracket, corresponding to the lower portion of the upper bracket, ensuring stable and reliable operation.

[0031] In the actual production process, after the double symmetrical plates have undergone basic work such as trimming and punching, the mold will be rotated before entering the next process. The specific working steps are mainly divided into the following steps:

[0032] The first stage: The upper and lower brackets are operated by the lifting cylinder to slowly lift the plate to the corresponding set height along the stamping direction, so that it is separated from the lower die positioning pin and other components to ensure that there is space for rotation;

[0033] The second section: The upper bracket rotates around the rotation axis under the action of the rotating cylinder. The polyurethane block on it and the side positioning at both ends press against the plate to keep it stable, and at the same time drive the plate to follow the rotation angle of the upper bracket. At this point, the rotation angle of the double-symmetrical plate is completed.

[0034] The advantage of this rotating structure process is that it breaks the constraint that the rotation angle of conventional double stamping plates can only be adjusted forward and backward along the feeding direction, so that the angle of double symmetrical plates can be adjusted symmetrically along the center line of the plate, greatly increasing the diversity of the post-process structure design.

[0035] The design of the rotating mechanism adds new options for the rotation angle of bisymmetrical parts, breaking through the previous problem that the rotation angle of bisymmetrical plates can only be rotated unilaterally after drawing. It reduces the conflict between the product arrangement of symmetrical parts and material utilization and sheet size considerations, and provides more options for the process design of subsequent processes.

[0036] The new rotation angle mechanism design can greatly improve the adjustment of the rotation angle of the product after drawing for double-symmetrical plate parts that are subject to process restrictions. That is, without adding additional molds, the mold structure of the post-drawing process can be optimized and the consistency of the double-symmetrical output of the product can be ensured. This is another innovation in the automotive stamping process.

[0037] The above is only an illustration of a preferred embodiment of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0038] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A mold mechanism for improving the rotation angle of a double-symmetrical plate, comprising a lower mold body, wherein the lower mold body is provided with two sets of rotation adjustment mechanisms for supporting the symmetry of the plate, characterized in that: The rotary adjustment mechanism includes a lifting cylinder, a rotating cylinder, and an upper bracket and a lower bracket that are hingedly connected. The upper bracket is located above the lower bracket. The lifting cylinder and the rotating cylinder are both arranged in the lower mold body. The upper end of the lifting cylinder is connected to the lower bracket, and the upper end of the rotating cylinder is connected to the upper bracket. The side of the upper bracket is provided with a side positioning plate for positioning the plate; the two lifting cylinders of the two sets of rotation adjustment mechanisms are connected through a pipeline.

2. The mold mechanism for improving the rotation angle of a bisymmetrical plate according to claim 1, characterized in that: The upper bracket is provided with a group of polyurethane blocks for positioning the panels.

3. The mold mechanism for improving the rotation angle of a bisymmetrical plate according to claim 1, characterized in that: The two rotary cylinders of the two sets of rotary adjustment mechanisms are connected via a pipeline.

4. The mold mechanism for improving the rotation angle of a bisymmetrical plate according to claim 1, characterized in that: The lower part of the upper bracket is hinged to one end of the lower bracket through a rotating shaft.

5. The mold mechanism for improving the rotation angle of a bisymmetrical plate according to claim 1, characterized in that: The lower bracket is a hollow flat plate, and the upper end of the rotary cylinder passes through the flat plate and is connected to the lower part of the upper bracket.

6. The mold mechanism for improving the rotation angle of a bisymmetrical plate according to claim 1, characterized in that: A cache block is provided on the lower bracket corresponding to the lower portion of the upper bracket.

7. The mold mechanism for improving the rotation angle of a bisymmetrical plate according to claim 5, characterized in that: The upper bracket is a hollow plate.

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