High-precision automobile part stamping die

Abstract

The utility model discloses a kind of high-precision automobile parts stamping die, including base, the lower die is placed on the upper end of base, the lower die bottom four around have multiple pin columns vertically inserted and embedded in the upper portion of base, pin column is fixedly connected with base by locking member;The lower die has cavity in the middle, and has functional cavity in the lower die inside and below cavity, the lower die four corner parts have die guiding hole in functional cavity, the inside of functional cavity is horizontally provided with support plate, the top four corner parts of support plate are connected with elastic guide rod slidingly worn in the inside of die guiding hole, multiple pin columns of lower die bottom are vertically inserted and embedded in the inside of locating pier of base top, then utilize bolt to tighten and lock locating pier and pin column, by such design can be accurately positioned to lower die and prevent its side slip deviation, and even even if thread loosening also cannot cause lower die to appear deviation, compared with prior art in structural rationality is further improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically a high-precision automotive parts stamping die. Background Technology

[0002] In automobile manufacturing, many parts require stamping. During stamping, molds are used. The upper and lower molds work together to form a complete stamping mold. Due to the different shapes of the parts, different molds need to be changed for different parts. In addition, when the parts are unmolded, they inevitably get stuck in the lower mold. When they are taken out, they are pulled, which causes the parts to deform and reduces the quality of the finished product. In related technologies, such as the precision stamping die for automotive parts in patent CN218049814U, a distance synchronization adjustment device allows two fixed inserts to simultaneously move closer or further apart. The fixed inserts, in conjunction with the fixed groove on the lower die, enable the fixing and disassembly of the lower die, making operation simpler and faster. Bolts connecting the fixed block and the upper die facilitate the installation and disassembly of the upper die, allowing for easy replacement of the upper and lower dies for different parts, reducing processing costs and improving processing efficiency. After the pressure from the upper die disappears, the first spring lifts the stripper sleeve, stripping the part and preventing deformation during stripping, thus improving part precision. The cooperation between the upper and lower guide devices ensures the stability of the lower die's movement, improving the fitting accuracy between the upper and lower dies and consequently increasing stamping precision.

[0003] However, the above technical solutions still have the following defects and shortcomings in practical applications: 1. In the non-stamping state, the stripper sleeve protrudes from the bottom of the inner side of the cavity under the push of the first spring. Since the blanks of many precision parts are initially placed on the lower part of the inner side of the cavity, the protruding stripper sleeve will inevitably cause the blanks to be misaligned, thus affecting the stamping accuracy.

[0004] 2. In this device, the lower die is fixed by a distance synchronization adjustment device to achieve positioning and convenient disassembly. However, we know that the threaded screw is a precision fit, and the impact and vibration brought by the stamping die during use will inevitably cause damage to the threaded connection structure, resulting in deformation, loose threads, and other defects. As a result, the positioning of the lower die is prone to deviation, and its structural rationality and practicality need further improvement. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] Therefore, the purpose of this utility model is to provide a high-precision stamping die for automotive parts, in order to solve the problems mentioned in the background art, such as the protruding stripper sleeve inevitably causing the blank to be misaligned, thus affecting the stamping accuracy; and the impact and vibration brought by the stamping die during use will inevitably cause damage to the threaded connection structure, resulting in defects such as deformation and loose threads, which makes it easy for the positioning of the lower die to be offset.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-precision stamping die for automotive parts, comprising a base, a lower die placed on the upper end of the base, and multiple pins vertically inserted into the upper part of the base around the bottom of the lower die, the pins being fixedly connected to the base by locking components. The lower mold has a cavity at its center and a functional cavity inside the lower mold and below the cavity. The four corners of the lower mold have vertical mold closing guide holes that communicate with the functional cavities. A support plate is horizontally arranged inside the functional cavity. The four corners of the top of the support plate are connected to elastic guide rods that slide through the mold closing guide holes. The bottom of the functional cavity has a second spring for supporting the support plate. The top of the support plate is fixed with multiple top pillars that vertically pass through the cavity. It also includes an upper mold that mates with the lower mold, wherein the bottom of the upper mold has mold closing guide rods around its perimeter that match the mold closing guide holes.

[0008] As a preferred embodiment of the high-precision automotive parts stamping die of this utility model, the pin has a threaded hole extending through its lower end on its inner side, the base has multiple positioning blocks on its top, the positioning blocks have positioning holes that are vertically inserted and matched with the pin on their inner side, and the positioning blocks have connecting holes communicating with the positioning holes on their bottom. It also includes bolts that pass through the connecting hole from bottom to top and are screwed into the inside of the screw hole.

[0009] In a preferred embodiment of the high-precision automotive parts stamping die of this utility model, after the pin is fully inserted into the positioning block, a gap is left between the bottom of the pin and the bottom of the inner side of the positioning hole.

[0010] As a preferred embodiment of the high-precision automotive parts stamping die of this utility model, the elastic guide rod includes a guide cylinder with its bottom fixed to the upper end of the support plate and its upper part sliding inside the mold closing guide hole, a relief rod that extends and retracts inside and above the guide cylinder, a first spring with one end abutting the bottom of the inner side of the guide cylinder and the other end abutting the bottom of the relief rod, and a stop plate fixed to the top of the relief rod and matchingly sliding inside the mold closing guide hole.

[0011] As a preferred embodiment of the high-precision automotive parts stamping die of this utility model, the bottom of the cavity is provided with a plurality of settling grooves that communicate with the functional cavities; The top column includes a demolding top plate that is vertically fitted into the inner side of the settling tank, and a connecting rod whose upper end is fixed to the bottom of the demolding top plate and whose lower end is fixed to the top of the support plate.

[0012] In a preferred embodiment of the high-precision automotive parts stamping die described in this utility model, the demolding top plate protrudes from the top of the settling groove and extends into the cavity when the die is not being stamped.

[0013] As a preferred embodiment of the high-precision automotive parts stamping die of this utility model, the base has a top plate directly above it, the bottom sides of the top plate have side plates fixedly connected to the base, a lifting plate is suspended below the top plate, and the upper die is fixedly installed at the bottom of the lifting plate.

[0014] As a preferred embodiment of the high-precision automotive parts stamping die of this utility model, the top plate is provided with a lifting drive component for driving the lifting plate to move up and down, multiple linear bearings are fixed around the top plate, and multiple matching guide columns are vertically fixed at the four corners of the top of the lifting plate, passing through the inner side and above the linear bearings.

[0015] Compared with the prior art, the beneficial effects of this utility model are: (i) This high-precision automotive parts stamping die utilizes the downward movement of the upper die to insert the mold closing guide rod into the mold closing guide hole around the lower die. When the elastic guide rod is pressed, it will descend along with the support plate and the ejector pin, causing the demolding ejector plate to retract to the bottom of the cavity. At this time, the blank sheet is placed in the correct position. Subsequently, the elastic guide rod continues to be compressed and the upper and lower dies complete the stamping of the blank. After completion, the upper die moves upward and the downward pressure on the support plate disappears. At the same time, the second spring pushes the support plate upward and ejects or loosens the parts stuck in the cavity through multiple ejector pins, preventing the parts from deforming during the demolding process. Compared with the existing technology, it further improves its practical effect while ensuring stamping accuracy.

[0016] (ii) This high-precision automotive parts stamping die is designed to precisely position the lower die and prevent it from slipping or deviating, and even if the threads are loose, the lower die will not shift. Compared with the existing technology, it has further improved in terms of structural rationality and practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall external structure of this utility model; Figure 2 This is a partial cross-sectional view of the base and lower mold of this utility model. Figure 3 This is a schematic diagram of the elastic guide rod structure of this utility model; Figure 4 This is a schematic diagram of the top column structure of this utility model; Figure 5 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 100, base; 110, positioning block; 1101, positioning hole; 1102, connecting hole; 200, lower mold; 210, cavity; 220, functional cavity; 230, support plate; 240, elastic guide rod; 2401, guide cylinder column; 2402, relief rod; 2403, first spring; 2404, abutment plate; 250, mold closing guide hole; 260, second spring; 270, top column; 2701, demolding top plate; 2702, connecting rod; 280, settling groove; 290, pin; 2901, screw hole; 300, bolt; 400, top plate; 410, side plate; 500, lifting plate; 600, upper mold; 610, mold closing guide rod; 700, guide column; 710, linear bearing; 720, lifting drive component. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] Figures 1-5 The diagram shown is a complete structural schematic of a high-precision automotive parts stamping die according to this utility model. Please refer to [link / reference]. Figures 1-5 This embodiment of a high-precision automotive parts stamping die includes a base 100, a lower die 200 placed on the upper end of the base 100, and multiple pins 290 vertically inserted into the upper part of the base 100 around the bottom of the lower die 200. The pins 290 are fixedly connected to the base 100 by locking members. The lower die 200 has a cavity 210 in the center and a functional cavity 220 inside the lower die 200 and below the cavity 210. The four corners of the lower die 200 have mold closing guide holes 25 vertically communicating with the functional cavities 220. 0. A support plate 230 is horizontally arranged inside the functional cavity 220. The four corners of the top of the support plate 230 are connected to elastic guide rods 240 that slide through the inner side of the mold closing guide hole 250. The bottom of the functional cavity 220 has a second spring 260 for supporting the support plate 230. The top of the support plate 230 is fixed with a plurality of top pillars 270 that vertically pass through the inner side of the cavity 210. It also includes an upper mold 600 that cooperates with the lower mold 200. The bottom of the upper mold 600 has mold closing guide rods 610 that match the mold closing guide hole 250.

[0023] See Figure 2 and Figure 5 The pin 290 has a threaded hole 2901 extending through its lower end on its inner side. The base 100 has multiple positioning blocks 110 on its top. The positioning blocks 110 have positioning holes 1101 on their inner sides that are vertically inserted into and matched with the pin 290. The bottom of the positioning blocks 110 has a connecting hole 1102 that connects to the positioning holes 1101. The base also includes a bolt 300, which passes through the connecting hole 1102 from bottom to top and is screwed into the inner side of the threaded hole 2901. After the pin 290 is fully inserted into the positioning block 110, there is a gap between the bottom of the pin 290 and the bottom of the inner side of the positioning hole 1101. This gap allows the bolt 300 to tightly pull the pin 290 to the inner side of the positioning block 110. In actual connection, a washer should also be placed between the nut of the bolt 300 and the bottom of the positioning block 110. Specifically, during installation, multiple pins 290 at the bottom of the lower mold 200 are vertically inserted into the inner side of the positioning block 110 at the top of the base 100. Then, the positioning block 110 and the pins 290 are tightened and locked using bolts 300. This design can accurately position the lower mold and prevent it from slipping or deviating. Even if the threads loosen, the lower mold 200 will not shift. Compared with the existing technology, the structural rationality and practicality are further improved.

[0024] See Figure 2 , Figure 3 and Figure 4The elastic guide rod 240 includes a guide cylinder 2401 whose bottom is fixed to the upper end of the support plate 230 and whose upper part slides inside the mold closing guide hole 250; a relief rod 2402 that extends and retracts inside and above the guide cylinder 2401; a first spring 2403 whose one end abuts against the bottom of the inner side of the guide cylinder 2401 and whose other end abuts against the bottom of the relief rod 2402; and a stop plate 2404 that is fixed to the top of the relief rod 2402 and slides inside the mold closing guide hole 250. It should be noted that the length stroke of the first spring 2403 is greater than that of the second spring 260, and the unit stroke support force of the first spring 2403 is greater than that of the second spring 260. This allows the second spring 260 to press down first and drive the demolding ejector plate 2701 to descend into the sinking groove 280 when the elastic guide rod 240 is subjected to longitudinal compression. The bottom of the cavity 210 has multiple settling grooves 280 that connect to the functional cavity 220; the top post 270 includes a demolding top plate 2701 that is vertically fitted into the inner side of the settling groove 280, and a connecting rod 2702 whose upper end is fixed to the bottom of the demolding top plate 2701 and whose lower end is fixed to the top of the support plate 230. When the mold is not stamped, the demolding top plate 2701 protrudes from the top of the settling groove 280 and extends into the inner cavity of the cavity 210. Specifically, in use, the blank sheet is placed into the lower mold 200, and then the upper mold 600 moves downward, causing the mold closing guide rod 610 to insert into the mold closing guide holes 250 around the lower mold. When the elastic guide rod 240 is pressed, it will lower along with the support plate 230 and the ejector pin 270, causing the demolding ejector plate 2701 to retract into the bottom of the cavity 210. At this time, the blank sheet is placed in the correct position. Then the elastic guide rod 240 continues to be compressed and, together with the upper and lower molds, completes the stamping of the blank. After completion, the upper mold 600 moves upward and disengages. At this time, the downward pressure on the support plate 230 disappears, and the second spring 260 pushes the support plate 230 upward. The ejector pins 270 eject or loosen the parts embedded in the cavity 210 to prevent deformation of the parts during the demolding process. Compared with the existing technology, this method further improves its practical effect while ensuring stamping accuracy.

[0025] As a further supplement to this embodiment, see [link to relevant documentation]. Figure 1 and Figure 5 The base 100 has a top plate 400 directly above it. The bottom of the top plate 400 has side plates 410 fixedly connected to the base 100 on both sides. A lifting plate 500 is suspended below the top plate 400, and the upper mold 600 is fixedly installed at the bottom of the lifting plate 500. It should be noted that the connection method between the upper mold 600 and the lifting plate 500 can be consistent with existing technology, or the same as the connection method between the lower mold 200 and the base 100 in this embodiment, or other forms of connection can be used; no specific limitation is made here.

[0026] The top plate 400 is equipped with a lifting drive component 720 for driving the lifting plate 500 to move up and down. Multiple linear bearings 710 are fixed around the top plate 400, and multiple guide posts 700, matching and passing through the inner side and above the linear bearings 710, are vertically fixed at the four corners of the top of the lifting plate 500. Similar to existing technology, this device has multiple linear bearings 710 matching the guide posts 700 around the top plate 400, which makes the movement of the guide posts 700, the lifting plate 500, and the upper die 600 smoother during up-and-down movement and stamping.

[0027] In summary, this embodiment of a high-precision automotive parts stamping die first selects appropriate upper and lower dies according to the processing requirements of the parts. During stamping, the blank sheet is first placed into the lower die 200. Then, the upper die 600 moves downward, causing the mold closing guide rod 610 to insert into the mold closing guide hole 250 around the lower die. After being pressed, the elastic guide rod 240, along with the support plate 230 and the ejector pin 270, descends, causing the demolding ejector plate 2701 to retract into the bottom of the cavity 210. At this time, the blank sheet is placed in the correct position. Then, the elastic guide rod 240 continues to be compressed and, together with the upper and lower dies, completes the stamping and forming of the blank. After completion, the upper die 600 moves upward and disengages. At this time, the downward pressure on the support plate 230 disappears, and the second spring 260 pushes the support plate 230 upward. The ejector pins 270 eject or loosen the parts embedded in the cavity 210, preventing the parts from deforming during the demolding process. Compared with the prior art, this method further improves its practical effect while ensuring stamping accuracy.

[0028] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-precision stamping die for automotive parts, characterized in that, Includes a base (100), on which a lower mold (200) is placed. The lower mold (200) has multiple pins (290) vertically inserted into the upper part of the base (100) around its bottom. The pins (290) are fixedly connected to the base (100) by locking components. The lower mold (200) has a cavity (210) at its center and a functional cavity (220) inside the lower mold (200) and below the cavity (210). The lower mold (200) has a mold closing guide hole (250) at each of its four corners that is vertically connected to the functional cavity (220). A support plate (230) is horizontally arranged inside the functional cavity (220). The support plate (230) has elastic guide rods (240) at the top four corners that are slidably inserted into the mold closing guide hole (250). The functional cavity (220) has a second spring (260) at its bottom for supporting the support plate (230). The support plate (230) has a plurality of top posts (270) that are vertically inserted into the cavity (210) at its top. It also includes an upper mold (600) that mates with the lower mold (200), the upper mold (600) having a mold closing guide rod (610) around its bottom perimeter that matches the mold closing guide hole (250).

2. The high-precision stamping die for automotive parts according to claim 1, characterized in that: The pin (290) has a screw hole (2901) that passes through its lower end on the inner side. The base (100) has a plurality of positioning blocks (110) on the top. The positioning blocks (110) have positioning holes (1101) that are vertically inserted and matched with the pin (290) on the inner side. The positioning blocks (110) have a connecting hole (1102) that communicates with the positioning holes (1101) at the bottom. It also includes a bolt (300) that passes through the connecting hole (1102) from bottom to top and is screwed into the inside of the screw hole (2901).

3. The high-precision stamping die for automotive parts according to claim 2, characterized in that: After the pin (290) is fully inserted into the positioning block (110), there is a gap between the bottom of the pin (290) and the bottom of the inner side of the positioning hole (1101).

4. The high-precision stamping die for automotive parts according to claim 1, characterized in that: The elastic guide rod (240) includes a guide cylinder (2401) whose bottom is fixed to the upper end of the support plate (230) and whose upper part slides inside the mold closing guide hole (250); a relief rod (2402) that extends and retracts inside and above the guide cylinder (2401); a first spring (2403) whose one end abuts against the bottom of the inner side of the guide cylinder (2401) and whose other end abuts against the bottom of the relief rod (2402); and a stop plate (2404) that is fixed to the top of the relief rod (2402) and slides inside the mold closing guide hole (250).

5. A high-precision stamping die for automotive parts according to claim 1, characterized in that: The bottom of the cavity (210) is provided with multiple settling grooves (280) that are connected to the functional cavity (220). The top column (270) includes a demolding top plate (2701) that is vertically fitted into the inner side of the settling groove (280), and a connecting rod (2702) whose upper end is fixed to the bottom of the demolding top plate (2701) and whose lower end is fixed to the top of the support plate (230).

6. A high-precision stamping die for automotive parts according to claim 5, characterized in that: The demolding top plate (2701) protrudes from the top of the settling groove (280) and extends into the cavity (210) when the mold is not stamped.

7. A high-precision stamping die for automotive parts according to claim 1, characterized in that: The base (100) has a top plate (400) directly above it, and the bottom sides of the top plate (400) have side plates (410) that are fixedly connected to the base (100). A lifting plate (500) is suspended below the top plate (400), and the upper mold (600) is fixedly installed at the bottom of the lifting plate (500).

8. A high-precision stamping die for automotive parts according to claim 7, characterized in that: The top plate (400) is provided with a lifting drive component (720) for driving the lifting plate (500) to move up and down. Multiple linear bearings (710) are fixed around the top plate (400). Multiple guide columns (700) that are matched and pass through the inside and above the linear bearings (710) are vertically fixed at the four corners of the top of the lifting plate (500).

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