Four-piece draw die

Abstract

A four-workpiece combined die-drawing mould, wherein a middle seat sliding sleeve is sleeved in a supporting seat, a square boss-shaped lower combined die core is arranged in a containing cavity in the middle part of the supporting seat, a step is arranged on the lower combined die core to form a drawing lower core body A, a drawing lower core body B, a drawing lower core body C and a drawing lower core body D; an upper combined die core is arranged in a die cavity in the middle part of the supporting seat, the upper combined die core is provided with a drawing upper core body A, a drawing upper core body B, a drawing upper core body C and a drawing upper core body D; the mould is provided with a square boss-shaped lower combined die core on the middle seat, the combined die core is divided into four drawing core bodies by arranging a step, and the upper combined die core is correspondingly arranged as a groove according to the lower combined die core, so that the left part and the right part can be placed at one end of the lower combined die core to synchronously perform a first-stage drawing, and then placed at the other end to synchronously perform a second-stage drawing, the set of moulds can provide four drawing procedures, reduce the working position, increase the production efficiency, and also reduce the mould purchase and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive molds, and in particular to a four-workpiece die-drawing mold. Background Technology

[0002] The car frame connecting plate is an important component of the car body structure. It is mostly made of high-strength steel, and its shape and structure vary depending on the car model design. Some of them are equipped with reinforcing ribs and grooves to improve strength and resistance to deformation.

[0003] It is typically located between the left longitudinal beam and the left side beam of the car's floor frame, connecting the two by welding. It may also be fixed to the left frame crossbeam, the front bulkhead inner panel, etc., forming the body frame. Its core function is to enhance the overall strength of the car body, enabling it to better withstand loads such as bumps and collisions; at the same time, it can disperse the stress under external forces, preventing local structural damage due to stress concentration. In addition, it also provides a mounting base for some chassis components and interior body parts.

[0004] The skeleton connection consists of a left and a right component, both primarily manufactured using stamping dies. During processing, a drawing process is required to shape them into the desired form. Currently, the industry typically uses two sets of dies, one for the left component and one for the right, for drawing. This multi-process production method not only increases labor costs but also raises the costs of purchasing and maintaining dies. Overall production efficiency and economics require further optimization and improvement. Utility Model Content

[0005] To solve the above problems, this utility model proposes a four-workpiece die-drawing mold.

[0006] The technical solution of this utility model is as follows: a four-workpiece closing die for drawing includes a support base, an intermediate base, and a pressure base; the intermediate base is slidably fitted inside the support base, and a support member is evenly provided between the bottom surface and the middle part of the support base. The support member is a gas spring, and a buffer plate is provided on the outer side of the support member. The buffer plate is supported between the bottom surface of the intermediate base and the support base. A square boss-shaped lower combined die core is provided in the receiving cavity in the middle of the support base. The lower combined die core is formed by setting steps to form a lower drawing core A, a lower drawing core B, a lower drawing core C, and a lower drawing core D. These four cores are formed by evenly dividing the lower combined die core. A square groove-shaped upper combined die core is provided in the die cavity in the middle of the pressure base. The upper combined die core is formed by evenly dividing the upper drawing core A, a lower drawing core B, a lower drawing core C, and a lower drawing core D. These four cores are formed by evenly dividing the upper combined die core.

[0007] Preferably, a lower assembly block is provided between the lower assembly mold core and the side wall of its receiving cavity, and a gap is provided between the outer side of the lower assembly block and the side wall of the receiving cavity, with a top pressing block provided in the gap; an upper assembly block is provided between the upper assembly mold core and the side wall of its receiving cavity, and a gap is provided between the outer side of the upper assembly block and the side wall of the receiving cavity, with a top pressing block provided in the gap.

[0008] Preferably, a plurality of guide pins are evenly provided between the lower assembly block and the support base. The guide pins are generally L-shaped and are fixed to the support base by screws. Corresponding clearance grooves are provided between the upper assembly block and the pressure base.

[0009] Preferably, a sliding rod is vertically fixed to the side of the support base, and a sliding sleeve is correspondingly provided on the side of the intermediate base. The sliding rod is fitted into the sliding sleeve to form a sliding pair. A clearance hole is correspondingly provided on the upper part of the intermediate base, and the size of the clearance hole is larger than the cross-sectional size of the sliding rod.

[0010] Preferably, the outer support of the lower combined mold core is uniformly provided with round pads, the round pads have a certain degree of elasticity, and the corresponding position on the pressure seat is provided with a cylindrical platform.

[0011] Preferably, an alignment mechanism is provided between the support base, the intermediate base, and the pressure base. The alignment mechanism includes a slide A at the end of the pressure base, a slide B at the end of the intermediate base, and a sliding cavity at the end of the support base. Both slide A and slide B are square-shaped. Slide B is fitted into the sliding cavity. A sliding pad is provided between slide B and the sliding cavity. A sliding groove is provided in slide B. Slide A is fitted into the sliding groove. A sliding pad is provided between slide A and the sliding groove.

[0012] Preferably, a positioning plate is vertically provided between the slide plate and the support base. The positioning plate is detachably connected between the two by screws. The positioning plate is arranged vertically, and the screw holes at the upper part of the positioning plate are elongated holes.

[0013] The beneficial technical effects of this utility model are: This mold features a square boss-shaped lower combination mold core on the middle seat. The combination mold is divided into four drawing cores by steps. The upper combination mold core is set into a groove shape according to the lower combination mold core. Therefore, the left and right parts can be placed at one end of the lower combination mold core for simultaneous first-stage drawing, and then placed at the other end for simultaneous second-stage drawing. This mold set can provide four drawing processes, reducing the number of workstations, increasing production efficiency, and reducing mold purchase and maintenance costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the intermediate seat and support seat of this utility model; Figure 3 Is Figure 2 A schematic diagram of the structure for placing workpieces on the mold core of Zhongda University; Figure 4 This is a three-dimensional structural diagram of the middle seat; Figure 5 This is a three-dimensional structural diagram of the pressure seat. In the diagram, 1. Pressure seat, 11. Upper drawing core A, 12. Upper drawing core B, 13. Upper drawing core C, 14. Upper drawing core D, 15. Upper assembly block, 16. Clearance groove, 2. Intermediate seat, 21. Support piece, 22. Buffer plate, 23. Lower assembly mold core, 24. Lower drawing core A, 25. Lower drawing core B, 26. Lower drawing core C, 27. Lower drawing core D, 28. Lower assembly block, 29. Guide pin, 3. Support seat, 31. Sliding rod, 32. Sliding sleeve, 33. Clearance hole, 41. Round pad, 42. Cylindrical platform, 51. Sliding table A, 52. Sliding table B, 53. Sliding cavity, 54. Sliding groove, 61. Positioning plate, 71. Workpiece A, 72. Sliding workpiece B, 73. Sliding workpiece C, 74. Sliding workpiece D. Detailed Implementation

[0015] Example 1, see appendix Figure 1-5 A four-workpiece closing drawing die includes a support base 3, an intermediate base 2, and a pressure base. The intermediate base 2 is slidably fitted inside the support base 3. Support members 21 are evenly arranged between the bottom surface of the support base 3 and the middle part of the support base 3, generating elastic support force between the intermediate base 2 and the support base 3 through the support members 21. A buffer plate 22 is provided on the outer side of the support member 21 to form impact protection between the two. A square boss-shaped lower combined die core 23 is provided in the receiving cavity in the middle of the support base 3. The combined die core is provided with... The steps form the lower core body A 24, lower core body B 25, lower core body C 26, and lower core body D 27. The lower core body A and lower core body B are located at one end of the combined mold core, and the other two lower core bodies are located at the other end of the combined mold core. The mold cavity in the middle of the pressure seat is provided with a square groove-shaped upper combined mold core. The upper combined mold core and the lower combined mold core 23 are matched in size and position. The upper combined mold core is provided with the upper core body A 11, upper core body B 12, upper core body C 13, and upper core body D 14.

[0016] A lower assembly block 28 is provided between the lower assembly mold core 23 and the side wall of its receiving cavity, and an upper assembly block 15 is provided between the upper assembly mold core and the side wall of its receiving cavity. The mold core is fixed in the receiving cavity with the help of the assembly blocks. At the same time, a horizontal support surface is formed on the outside of the mold core by the assembly blocks to support the workpiece plate.

[0017] A number of guide pins 29 are evenly arranged between the lower assembly block 28 and the support base 3. A clearance groove 16 is provided between the upper assembly block 15 and the pressure base. The size of the area between the guide pins 29 matches the size of the workpiece plate. When the workpiece is placed into the mold core, it can be quickly fed into the mold core through the guide pins 29, and a limiting structure is formed around it to keep it in a stable stamping state.

[0018] A sliding rod 31 is vertically fixed to the side of the support base 3, and a sliding sleeve 32 is correspondingly provided on the side of the intermediate base 2. The sliding rod 31 is fitted into the sliding sleeve 32. A clearance hole 33 is correspondingly provided on the upper part of the intermediate base 2. After the intermediate base 2 is closed and pressed, the intermediate base 2 will compress the support member 21 and slide downward in the support base 3. During the sliding process, the intermediate base 2 moves along the sliding rod 31 through the sliding sleeve 32. The sliding rod provides sliding support for the intermediate base on both sides, ensuring its displacement accuracy and thus improving the accuracy of mold closing and stamping.

[0019] The support base 3 on the outer side of the lower combination mold core 23 is evenly provided with round pads 41, and the corresponding position on the pressure base is provided with a cylindrical platform 42. At the moment of mold closing, the cylindrical platform 42 is pressed against the round pads 41, and the round pads provide limiting support for the mold.

[0020] In this embodiment, the mold is used by placing the left and right workpieces on the lower drawing core A 24 and lower drawing core B 25, respectively. The die is then driven downwards, pressing the upper combined die core onto the workpieces to complete the drawing process. The die is then driven upwards, and the two drawn workpieces are moved horizontally onto the lower drawing cores C 26 and D 27. The mold is closed again to complete the drawing process. The die core is divided into four drawing cores by steps; the corresponding upper combined die core is designed with a groove shape. Based on this structure, the left and right workpieces can be placed at one end of the lower combined die core 23 to simultaneously complete the first-stage drawing, and then moved to the other end to simultaneously perform the second-stage drawing. This mold can perform four drawing processes at once, effectively reducing production stations, significantly improving production efficiency, and greatly reducing the purchase and maintenance costs of the mold.

[0021] Example 2, see appendix Figure 1-3 This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that an alignment mechanism is provided between the support base 3, the intermediate base 2, and the pressure base. The alignment mechanism includes a slide plate A 51 at the end of the pressure base, a slide plate B 52 at the end of the intermediate base 2, and a sliding cavity 53 at the end of the support base 3. The slide plate B 52 is fitted into the sliding cavity 53, and a sliding groove 54 is provided in the slide plate B 52. The slide plate A 51 is fitted into the sliding groove 54. During mold closing, the pressure base slides into the sliding groove 54 on the slide plate A 51, and at the same time, the slide plate A 51 slides in the sliding cavity 53. The three components combine to form a two-stage mold closing guide mechanism, ensuring the accuracy and stability of mold closing between the support base 3, the intermediate base 2, and the pressure base.

[0022] A positioning plate 61 is vertically provided between the slide plate A 51 and the support base 3. The positioning plate 61 is detachably connected between the two by screws. When the mold is used up and stored or transferred, the positioning plate 61 fixes the pressure base and the support base 3 to maintain the stability of the mold and avoid damage caused by the mold core rubbing against each other under force.

Claims

1. A four-workpiece clamping drawing die, characterized in that: It includes a support base, an intermediate base, and a pressure base; the intermediate base is slidably fitted inside the support base, and support members are evenly arranged between the bottom surface and the middle part of the support base. A buffer plate is provided on the outer side of the support member. A square boss-shaped lower combined mold core is provided in the receiving cavity in the middle of the support base. The combined mold core is formed by setting steps to form a lower drawing core A, a lower drawing core B, a lower drawing core C, and a lower drawing core D; a square groove-shaped upper combined mold core is provided in the mold cavity in the middle of the pressure base, and a lower drawing core A, a lower drawing core B, a lower drawing core C, and a lower drawing core D are provided on the upper combined mold core.

2. The four-workpiece closing and drawing die according to claim 1, characterized in that: A lower assembly block is provided between the lower assembly mold core and the side wall of its receiving cavity, and an upper assembly block is provided between the upper assembly mold core and the side wall of its receiving cavity.

3. The four-workpiece closing and drawing die according to claim 2, characterized in that: Several guide pins are evenly provided between the lower assembly block and the support base, and corresponding clearance grooves are provided between the upper assembly block and the pressure base.

4. The four-workpiece clamping drawing die according to claim 1, characterized in that: The support base has a sliding rod vertically fixed to its side, and the middle base has a corresponding sliding sleeve on its side. The sliding rod is fitted into the sliding sleeve, and the upper part of the middle base has a corresponding clearance hole.

5. A four-workpiece clamping and drawing die according to claim 1, characterized in that: The outer support of the lower combined mold core is provided with evenly distributed round pads, and the corresponding position on the pressure seat is provided with a cylindrical platform.

6. A four-workpiece closing and drawing die according to claim 1, characterized in that: A centering mechanism is provided between the support base, the intermediate base and the pressure base. The centering mechanism includes a slide A at the end of the pressure base, a slide B at the end of the intermediate base and a sliding cavity at the end of the support base. The slide B is fitted into the sliding cavity and a sliding groove is provided in the slide B. The slide A is fitted into the sliding groove.

7. A four-workpiece clamping drawing die according to claim 6, characterized in that: A positioning plate is vertically provided between the slide plate and the support base, and the positioning plate is detachably connected between the two by screws.

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