A drawing mechanism of a continuous drawing die

Abstract

The utility model provides a kind of drawing mechanism of continuous draw die, including upper die holder, lower die holder, lift material subassembly, upper edge block, lower edge block, lower draw assembly and upper draw die core, upper die holder is above corresponding to lower die holder, lift material subassembly includes first nitrogen spring and lift material plate, first nitrogen spring is fixed on lower die holder, lift material plate is fixed in the power output end of first nitrogen spring, lift material plate is set two groups and is corresponding to the left and right sides above lower die holder, the inside of lift material plate is equipped with edge avoiding hole, upper edge block and lower edge block are respectively fixed below upper die holder and above lower die holder, upper edge block and lower edge block are inserted in edge avoiding hole, upper edge block is corresponding to the outside of lower edge block, lower draw assembly includes elastic telescopic piece, floating platform and lower draw die core, its advantage lies in that drawing process can be continuously carried out, drawing efficiency can be improved, processing error caused by repeated feeding and discharging is also avoided, and the quality of drawing product is improved.

Description

Technical Field

[0001] This utility model relates to the field of drawing die structure, and in particular to a drawing mechanism for a continuous drawing die. Background Technology

[0002] In the automotive manufacturing industry, drawing dies for automotive parts are a type of key tooling with distinct technical characteristics. Their core feature is that the products they accommodate often have significant height dimensions, and the parts themselves frequently have unique structural requirements, such as complex curved surface transitions and irregular contours. These characteristics mean that in traditional production models, drawing dies are mostly used in single-process engineering mold systems—that is, a single drawing process is completed using a single mold. This model can meet basic manufacturing needs in scenarios with relatively fixed product structures and small production batches, and it also features short mold development cycles and low initial investment costs.

[0003] However, as the automotive industry enters a stage of personalized and diversified development, the market demand for car styling is becoming increasingly diverse. From streamlined bodies to customized exterior components, the structural complexity of parts is constantly increasing, and production batches are also continuously expanding. At this time, traditional simple engineering molds are gradually revealing obvious shortcomings: because single-process molds require multiple tooling changes and repeated positioning adjustments, not only does this significantly increase downtime during production, but it is also prone to cumulative errors due to multiple positioning, affecting the consistency of part precision, and making it difficult to meet the core requirements of modern production lines for production continuity and efficiency.

[0004] Therefore, it is necessary to develop a continuous drawing die drawing mechanism to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a drawing mechanism for a continuous drawing die to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A continuous drawing die mechanism includes an upper die base, a lower die base, a material lifting assembly, an upper retaining block, a lower retaining block, a lower drawing assembly, and an upper drawing die core. The upper die base is positioned above the lower die base. The material lifting assembly includes a first nitrogen spring and a material lifting plate. The first nitrogen spring is fixed to the lower die base, and the material lifting plate is fixed to the power output end of the first nitrogen spring. Two sets of material lifting plates are provided, corresponding to the left and right sides above the lower die base. The inner side of the material lifting plate is provided with retaining hole clearance. The upper retaining block and the lower retaining block are respectively fixed below the upper die base and above the lower die base. Both the upper and lower edge fastening blocks are inserted into the edge fastening clearance holes. The upper edge fastening block corresponds to the outer side of the lower edge fastening block. The lower drawing assembly includes an elastic telescopic component, a floating platform, and a lower drawing die core. The elastic telescopic component is fixed on the lower die base. The floating platform is fixed at the power output end of the elastic telescopic component and corresponds to the space between the two sets of lower edge fastening blocks. The middle of the floating platform is provided with a lower die core clearance hole. The lower end of the lower drawing die core is fixed on the lower die base and corresponds to the space inside the lower die core clearance hole. The upper end of the upper drawing die core is fixed on the upper die base and corresponds to the space above the lower drawing die core.

[0008] Further description of the present invention: A material belt guide groove is provided above the lifting plate, and the material belt guide groove passes through the edge clearance hole in the front-to-back direction.

[0009] Further description of the present invention: The lifting assembly also includes a first limiting rod, a first cavity is provided in the lower mold base, the upper end of the first limiting rod is fixed on the lifting plate, the first limiting rod passes through the lower mold base and the lower end corresponds to the first cavity, and the lower end of the first limiting rod is provided with a first limiting block protruding in the horizontal direction.

[0010] Further description of this utility model: The elastic telescopic component includes a mounting base plate, a second nitrogen spring, a lifting plate, a support column, and a second limiting rod. A second cavity is provided inside the lower mold base. The mounting base plate is fixed on the lower mold base and corresponds to the lower end of the second cavity. The second nitrogen spring is fixed on the mounting base plate. The lifting plate is fixed to the power output end of the second nitrogen spring. Multiple sets of support columns are provided. The lower end of the support column is fixed on the lifting plate and corresponds to the second cavity. The support column passes through the lower mold base and is slidably connected to the lower mold base. The floating platform is fixed on the upper end of the support column. The upper end of the second limiting rod is fixed on the lower mold base and corresponds to the second cavity. The lower end of the second limiting rod passes through the lifting plate. The lower end of the second limiting rod is provided with a second limiting block protruding in the horizontal direction. The second limiting block corresponds to the lower part of the lifting plate.

[0011] Further description of the present invention: It also includes a pressure assembly, which includes a third nitrogen spring and a pressure plate. The third nitrogen spring is fixed on the upper mold base with its power output end facing downward. The pressure plate is fixed on the power output end of the third nitrogen spring. An upper mold core clearance hole is opened in the middle of the pressure plate, and the upper drawing mold core corresponds to the upper mold core clearance hole.

[0012] Further description of this utility model: The lower inner side of the upper buckle block is provided with a rounded corner.

[0013] The beneficial effects of this utility model are as follows: In the mold-opening state, the lifting plate is in the raised state driven by the first nitrogen spring. At the same time, the floating platform is also in the raised state under the action of the elastic telescopic component. The conveyor belts on the left and right sides are respectively placed on the two sets of lifting plates. The drawing plate to be drawn is placed on the floating platform. The left and right sides of the drawing plate are connected by the connecting belt and the conveyor belt. The connecting belt can be set in a U-shape so that it can be stretched in the subsequent drawing process. In the drawing process, firstly, the upper die holder descends under the drive of the equipment and contacts the lifting plate. Simultaneously, the upper drawing die core contacts the floating platform. The upper die holder continues to descend, driving the lifting plate, floating platform, conveyor belt, connecting belt, and drawing plate to descend. When the lifting plate reaches its lowest position, the inner side of the conveyor belt rests on the lower snap-fit ​​block. The upper snap-fit ​​block continues to descend, folding the outer side of the conveyor belt downwards to form a snap-fit ​​edge, thus fixing the conveyor belt to the lifting plate and preventing the conveyor belt from stretching inwards during subsequent drawing processes. The upper die holder continues to descend, and the lower drawing die core contacts the drawing plate. The drawing die core continues to press the drawing sheet downwards and cooperates with the lower drawing die core to perform the drawing process on the drawing sheet. During the continued pressing of the drawing sheet, the connecting strip is stretched accordingly. After the drawing process is completed, the equipment opens the die, and the lifting plate and floating platform raise the conveyor belt and the drawing sheet to the initial position. The conveyor belt is then transported by the conveying equipment, thereby conveying the drawing sheet downstream of the processing. By setting multiple sets of the drawing mechanism designed in this way, the drawing process can be performed continuously, which can improve the drawing efficiency, avoid the processing errors caused by repeated loading and unloading, and improve the quality of the drawn products. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention (in the mold-open state);

[0015] Figure 2 This is a cross-sectional view of the present invention (in the mold-open state).

[0016] Figure 3 This is a schematic diagram of the structure of a drawn workpiece;

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Upper mold base; 2. Lower mold base; 21. First cavity; 22. Second cavity; 3. Material lifting assembly; 31. First nitrogen spring; 32. Material lifting plate; 321. Edge clearance hole; 322. Strip guide groove; 33. First limiting rod; 331. First limiting block; 4. Upper edge block; 5. Lower edge block; 6. Lower drawing assembly; 61. Elastic telescopic component; 611. Mounting base plate; 612. Second nitrogen spring 613. Lifting plate; 614. Support column; 615. Second limit rod; 6151. Second limit block; 62. Floating platform; 621. Lower die core clearance hole; 63. Lower drawing die core; 7. Upper drawing die core; 8. Pressing assembly; 81. Third nitrogen spring; 82. Pressing plate; 821. Upper die core clearance hole; 91. Conveyor belt; 92. Connecting belt; 93. Drawing plate; 94. Belt edge fastener. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1 to 3 As shown, a drawing mechanism for a continuous drawing die includes an upper die base 1, a lower die base 2, a material lifting assembly 3, an upper retaining block 4, a lower retaining block 5, a lower drawing assembly 6, and an upper drawing die core 7. The upper die base 1 is located above the lower die base 2. The material lifting assembly 3 includes a first nitrogen spring 31 and a material lifting plate 32. The first nitrogen spring 31 is fixed on the lower die base 2, and the material lifting plate 32 is fixed on the power output end of the first nitrogen spring 31. Two sets of material lifting plates 32 are provided, corresponding to the left and right sides above the lower die base 2. The inner side of the material lifting plate 32 is provided with a retaining hole 321. The upper retaining block 4 and the lower retaining block 5 are respectively fixed below the upper die base 1 and above the lower die base 2. Both block 4 and lower edge block 5 are inserted into the edge clearance hole 321. The upper edge block 4 corresponds to the outer side of the lower edge block 5. The lower drawing assembly 6 includes an elastic telescopic member 61, a floating platform 62, and a lower drawing die core 63. The elastic telescopic member 61 is fixed on the lower die base 2. The floating platform 62 is fixed at the power output end of the elastic telescopic member 61 and corresponds between the two sets of lower edge blocks 5. The floating platform 62 has a lower die core clearance hole 621 in the middle. The lower end of the lower drawing die core 63 is fixed on the lower die base 2. The lower drawing die core 63 corresponds to the lower die core clearance hole 621. The upper end of the upper drawing die core 7 is fixed on the upper die base 1 and corresponds to the upper part of the lower drawing die core 63.

[0021] In the mold-open state, the lifting plate 32 is in a raised state driven by the first nitrogen spring 31. At the same time, the floating platform 62 is also in a raised state under the action of the elastic telescopic member 61. The conveyor belts 91 on the left and right sides are respectively placed on the two sets of lifting plates 32. The drawing plate 93 to be drawn is placed on the floating platform 62. The left and right sides of the drawing plate 93 are connected to the conveyor belts 91 through the connecting belts 92. The connecting belts 92 can be set in a U-shape to facilitate stretching in the subsequent drawing process. In the drawing process, firstly, the upper die holder 1 descends under the drive of the equipment and contacts the lifting plate 32. At the same time, the upper drawing die core 7 contacts the floating platform 62. The upper die holder 1 continues to descend, driving the lifting plate 32, the floating platform 62, the conveyor belt 91, the connecting belt 92, and the drawing plate 93 to descend. When the lifting plate 32 reaches its lowest position, the inner side of the conveyor belt 91 rests on the lower retaining block 4. The upper retaining block 4 continues to descend, thereby folding the outer side of the conveyor belt 91 downward to form the belt retaining edge 94, thus fixing the conveyor belt 91 on the lifting plate 32 and preventing the conveyor belt 91 from being stretched inward in subsequent drawing processes. The upper die holder 1 continues to descend, and the lower drawing die core 63 contacts the drawing plate. The upper drawing die core 7 continues to press down the drawing plate 93 and cooperates with the lower drawing die core 63 to perform the drawing process on the drawing plate 93. During the continued pressing of the drawing plate 93, the connecting strip 92 is stretched accordingly. After the drawing process is completed, the equipment opens the die, and the lifting plate 32 and the floating platform 62 raise the conveyor strip 91 and the drawing plate 93 to the initial position. The conveyor strip 91 is then conveyed by the conveying equipment, thereby conveying the drawing plate 93 to the downstream processing. By setting multiple sets of the drawing mechanism designed in this way, the drawing process can be carried out continuously, which can improve the drawing efficiency, avoid the processing errors caused by repeated loading and unloading, and improve the quality of the drawn products.

[0022] The material lifting plate 32 is provided with a material belt guide groove 322 above it. The material belt guide groove 322 passes through the buckle clearance hole 321 in the front-to-back direction. After one drawing process is completed, the conveyor belt 91 is conveyed to the next process. The material belt buckle 94 corresponds to the material belt guide groove 322 and can play a limiting role in the conveying process, thereby improving the conveying accuracy.

[0023] The lifting assembly 3 also includes a first limiting rod 33. The lower mold base 2 is provided with a first cavity 21. The upper end of the first limiting rod 33 is fixed on the lifting plate 32. The first limiting rod 33 passes through the lower mold base 2 and the lower end corresponds to the first cavity 21. The lower end of the first limiting rod 33 is provided with a first limiting block 331 protruding in the horizontal direction.

[0024] In the open mold state, the first nitrogen spring 31 drives the lifting plate 32 to rise until the first limit block 331 contacts the lower mold base 2, thereby limiting the lifting position of the conveyor belt 91.

[0025] The elastic telescopic component 61 includes a mounting base plate 611, a second nitrogen spring 612, a lifting plate 613, support columns 614, and a second limiting tie rod 615. A second cavity 22 is provided inside the lower mold base 2. The mounting base plate 611 is fixed to the lower mold base 2 and corresponds to the lower end of the second cavity 22. The second nitrogen spring 612 is fixed to the mounting base plate 611. The lifting plate 613 is fixed to the power output end of the second nitrogen spring 612. Multiple sets of support columns 614 are provided, and the lower end of the support column 614 is fixed to the lifting plate 615. On plate 613 and corresponding to the second cavity 22, support column 614 passes through lower mold base 2 and is slidably connected to lower mold base 2. Floating platform 62 is fixed to the upper end of support column 614. The upper end of second limiting rod 615 is fixed on lower mold base 2 and corresponding to the second cavity 22. The lower end of second limiting rod 615 passes through lifting plate 613. The lower end of second limiting rod 615 is provided with a second limiting block 6151 protruding in the horizontal direction. The second limiting block 6151 corresponds to the lower part of lifting plate 613.

[0026] In the mold-opening state, the second nitrogen spring 612 drives the lifting plate 613 and the support column to rise, thereby driving the floating platform 62 to rise. When the mold is closed, as the floating platform 62 descends, the lifting plate 613 also descends until the lower end face of the lifting plate 613 contacts the second limiting block 6151 of the second limiting rod, thereby limiting the descent position of the floating platform 62.

[0027] This design also includes a pressure assembly 8, which includes a third nitrogen spring 81 and a pressure plate 82. The third nitrogen spring 81 is fixed on the upper mold base 1 with its power output end facing downwards. The pressure plate 82 is fixed on the power output end of the third nitrogen spring 81. An upper mold core clearance hole 821 is provided in the middle of the pressure plate 82, and the upper drawing mold core 7 corresponds to the upper mold core clearance hole 821.

[0028] During the mold closing process, the pressure plate 82 presses against the conveyor belt 91 to prevent the conveyor belt 91 from shifting during the descent. As the upper mold base 1 continues to descend, the third nitrogen spring 81 is compressed, so that the pressure plate 82 can continue to press against the conveyor belt 91.

[0029] The lower inner side of the upper buckle block 4 is provided with a rounded corner. The upper buckle block 4 contacts the outer side of the conveyor belt 91 through the rounded corner, so that no debris will be generated due to scratching during the process of folding the conveyor belt 91 and forming the belt buckle 94.

[0030] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A drawing mechanism for a continuous drawing die, characterized in that: The assembly includes an upper die base, a lower die base, a material lifting assembly, an upper retaining block, a lower retaining block, a lower drawing assembly, and an upper drawing die core. The upper die base is located above the lower die base. The material lifting assembly includes a first nitrogen spring and a material lifting plate. The first nitrogen spring is fixed to the lower die base, and the material lifting plate is fixed to the power output end of the first nitrogen spring. Two sets of material lifting plates are provided, corresponding to the left and right sides above the lower die base. The inner side of the material lifting plate is provided with retaining hole. The upper retaining block and the lower retaining block are respectively fixed below the upper die base and above the lower die base. All are inserted into the buckle clearance hole. The upper buckle block corresponds to the outer side of the lower buckle block. The lower drawing assembly includes an elastic telescopic member, a floating platform, and a lower drawing die core. The elastic telescopic member is fixed on the lower die base. The floating platform is fixed to the power output end of the elastic telescopic member and corresponds between the two sets of lower buckle blocks. The floating platform has a lower die core clearance hole in the middle. The lower end of the lower drawing die core is fixed on the lower die base and corresponds to the lower die core clearance hole. The upper end of the upper drawing die core is fixed on the upper die base and corresponds to the upper part of the lower drawing die core.

2. The drawing mechanism of a continuous drawing die according to claim 1, characterized in that: The material lifting plate is provided with a material belt guide groove above it, and the material belt guide groove passes through the buckle clearance hole in the front-to-back direction.

3. The drawing mechanism of a continuous drawing die according to claim 1, characterized in that: The lifting assembly further includes a first limiting rod. The lower mold base has a first cavity. The upper end of the first limiting rod is fixed to the lifting plate. The first limiting rod passes through the lower mold base and its lower end corresponds to the first cavity. The lower end of the first limiting rod has a first limiting block protruding in the horizontal direction.

4. The drawing mechanism of a continuous drawing die according to claim 1, characterized in that: The elastic telescopic component includes a mounting base plate, a second nitrogen spring, a lifting plate, support columns, and a second limiting rod. The lower mold base has a second cavity. The mounting base plate is fixed to the lower mold base and corresponds to the lower end of the second cavity. The second nitrogen spring is fixed to the mounting base plate. The lifting plate is fixed to the power output end of the second nitrogen spring. Multiple sets of support columns are provided. The lower end of each support column is fixed to the lifting plate and corresponds to the second cavity. The support column passes through the lower mold base and is slidably connected to it. The floating platform is fixed to the upper end of the support column. The upper end of the second limiting rod is fixed to the lower mold base and corresponds to the second cavity. The lower end of the second limiting rod passes through the lifting plate. The lower end of the second limiting rod has a second limiting block protruding horizontally, corresponding to the lower part of the lifting plate.

5. The drawing mechanism of a continuous drawing die according to claim 1, characterized in that: It also includes a pressure assembly, which includes a third nitrogen spring and a pressure plate. The third nitrogen spring is fixed on the upper die base with its power output end facing downward. The pressure plate is fixed to the power output end of the third nitrogen spring. An upper die core clearance hole is opened in the middle of the pressure plate, and the upper drawing die core corresponds to the clearance hole of the upper die core.

6. The drawing mechanism of a continuous drawing die according to claim 1, characterized in that: The lower inner side of the upper buckle block is provided with rounded corners.

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