Die edge pressing mechanism for vehicle body processing

Abstract

This utility model relates to the field of car body processing technology and discloses a mold pressing mechanism for car body processing, including a mold base and a lower template fixedly installed on its top. An upper template is provided above the lower template. Pressing grooves are provided on both sides of the middle part of the lower template, and mounting grooves are provided at both ends of the upper template. A pressing assembly is provided in the inner cavity of the mounting groove. The pressing assembly includes a pressing plate located in the inner cavity of the mounting groove. Limit rods are fixedly connected to both ends of the pressing plate. Telescopic rods are fixedly connected to both sides of the bottom end of the inner cavity of the pressing groove. Pressure springs are sleeved on the surface of the telescopic rods. The pressure of the pressing plate is controlled by different pressure springs to prevent the pressing plate from pressing directly downward, which would cause excessive pressure and cracking of the stamped car body edge. The pressure of the pressing plate is adjusted by a hydraulic push rod to prevent insufficient pressure during the mold stamping process, which would cause wrinkling of the car body edge.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body processing technology, and more specifically to a mold pressing mechanism for vehicle body processing. Background Technology

[0002] Dies for car body processing are the core tools for stamping all stamped parts of a car body, playing a vital role in automobile manufacturing. During the stamping process of body sheet metal, the material edges are prone to uneven flow due to tensile stress, leading to edge wrinkling. Therefore, a blank holder mechanism is used. By applying appropriate pressure, the blank holder mechanism presses the edges of the sheet metal tightly against the die surface, restricting its free flow and ensuring the final shape and dimensional accuracy of the product.

[0003] The shortcomings of existing technology: Existing edge pressing mechanisms are usually moved by a drive mechanism in the mold, so it is impossible to adjust the pressure according to different products and materials. Excessive edge pressing pressure may cause cracks on the edges of the processed products. At the same time, the stamped body panels may spring back, which will affect the edge pressing mechanism and cause the pressure to be too low. Insufficient pressure may cause wrinkles on the edges of the processed products and uneven surfaces. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a die pressing mechanism for car body processing, so as to solve the problems in the prior art where the existing pressing device cannot adjust the pressure, excessive pressing pressure may cause cracking of the edge of the processed product, and insufficient pressure may cause wrinkling of the edge of the processed product and uneven surface.

[0005] This utility model provides the following technical solution: a mold pressing mechanism for body processing, including a mold base and a lower template fixedly installed on its top, an upper template is provided above the lower template, pressing grooves are provided on both sides of the middle part of the lower template, and mounting grooves are provided at both ends of the upper template, and pressing components are provided in the inner cavity of the mounting groove.

[0006] The pressing assembly includes a pressing plate located in the inner cavity of the mounting groove. Limiting rods are fixedly connected to both ends of the pressing plate. Telescopic rods are fixedly connected to both sides of the bottom end of the inner cavity of the pressing groove. Pressure springs are sleeved on the surface of the telescopic rods.

[0007] Preferably, a fixing plate is fixedly connected to the top of the pressure plate, a top plate is fixedly connected to the top of the telescopic rod, and the pressure spring is located at the bottom of the top plate.

[0008] Preferably, the position of the pressing plate corresponds to the position of the pressing groove and is movably connected to the inner cavity of the pressing groove, and the position of the limiting rod corresponds to the position of the top plate.

[0009] Preferably, the top of the mold base is provided with an equipment frame, and a stamping hydraulic cylinder is installed at the bottom center of the equipment frame. The extended end of the stamping hydraulic cylinder is fixedly connected to the top center of the upper template.

[0010] Preferably, hydraulic push rods are fixedly installed on both sides of the bottom end of the equipment frame, and the protruding ends of the hydraulic push rods are fixedly connected to the middle of the top end of the fixed plate.

[0011] Preferably, the upper template has four guide grooves, and the top of the mold base is fixedly connected to four guide pillars, the positions of the guide pillars corresponding to the positions of the guide grooves and being movably connected.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model uses a pressure spring to control the pressure of the pressing plate. Depending on the sheet metal and material of the stamped car body, a pressure spring with appropriate elasticity is selected. When the stamping hydraulic cylinder drives the upper template to press downward, it moves the pressing plates on both sides downward into the inner cavity of the pressing groove. As the pressing plates continue to move downward, the limiting rod squeezes the pressure spring. The pressure spring, based on its own elastic characteristics, controls the pressure of the pressing plate to prevent the pressing plate from pressing downward directly, which would cause excessive pressure and result in cracks at the edges of the stamped car body.

[0014] 2. This utility model ensures that the top of the pressure spring is evenly stressed by the pressure plate. At the same time, when the pressure spring is compressed, the telescopic rod also extends and retracts continuously, which plays a certain buffering role for the pressure spring. The pressure plate's pressing operation is controlled separately by the hydraulic push rod, which is conducive to adjusting the pressure. It prevents the pressure plate from shifting upward due to the springback of the car body sheet during the die stamping process, which would result in insufficient pressure and wrinkling of the car body edge. This allows the die pressing mechanism to adapt to different stamping requirements and effectively improves the quality of the products processed by the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the present invention. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the overall cross-sectional structure of the present invention. Figure 2 .

[0019] The attached diagram is labeled as follows: 1. Mold base; 2. Lower template; 3. Upper template; 4. Pressing groove; 5. Mounting groove; 6. Pressing assembly; 61. Pressing plate; 62. Limiting rod; 63. Telescopic rod; 64. Pressure spring; 65. Fixing plate; 66. Top plate; 67. Hydraulic push rod; 7. Equipment frame; 8. Stamping hydraulic cylinder; 9. Guide groove; 10. Guide column. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The mold pressing mechanism for body processing involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] This utility model provides a die pressing mechanism for car body processing, such as Figure 1 - Figure 4 As shown, it includes a mold base 1 and a lower template 2 fixedly installed on its top. An upper template 3 is provided above the lower template 2. A pressing groove 4 is provided on both sides of the middle part of the lower template 2. An installation groove 5 is provided at both ends of the upper template 3. A pressing component 6 is provided in the inner cavity of the installation groove 5.

[0022] Furthermore, such as Figure 1 and Figure 2 As shown, the pressing plate assembly 6 includes a pressing plate 61 located in the inner cavity of the mounting groove 5. Limiting rods 62 are fixedly connected to both ends of the pressing plate 61. Telescopic rods 63 are fixedly connected to both sides of the bottom end of the inner cavity of the pressing groove 4. A pressure spring 64 is sleeved on the surface of the telescopic rod 63. Depending on the body and material, pressure springs 64 with different elastic values ​​are selected to adjust the pressure of the pressing plate 61.

[0023] Furthermore, such as Figure 2 As shown, a fixing plate 65 is fixedly connected to the top of the pressure plate 61, a top plate 66 is fixedly connected to the top of the telescopic rod 63, and a pressure spring 64 is located at the bottom of the top plate 66.

[0024] Furthermore, such as Figure 2 and Figure 3As shown, the position of the pressing plate 61 corresponds to the position of the pressing groove 4 and is movably connected to the inner cavity of the pressing groove 4. The position of the limiting rod 62 corresponds to the position of the top plate 66. When the upper template 3 punches the car body, the pressing plate 61 moves downward with the upper template 3 and moves into the inner cavity of the pressing groove 4. When the upper template 3 moves to the top surface of the lower template 2, the pressing plate 61 also moves into the inner cavity of the pressing groove 4. At the same time, when the pressing plate 61 moves downward, the limiting rods 62 on both sides move to the top of the top plate 66. As the pressing plate 61 moves downward, the limiting rods 62 squeeze the pressure spring 64. At the same time, when the pressure spring 64 is compressed, the telescopic rod 63 also extends and retracts continuously, which plays a certain buffering role for the pressure spring 64. The top plate 66 ensures that the top of the pressure spring 64 can be evenly stressed. The pressure spring 64 controls the pressure of the pressing plate 61 according to its own elastic characteristics to prevent the pressing plate 61 from punching downward directly, which would cause excessive pressure and breakage of the punched car body edge.

[0025] Furthermore, such as Figure 1 and Figure 3 As shown, a machine frame 7 is provided at the top of the mold base 1, and a stamping hydraulic cylinder 8 is installed at the bottom center of the machine frame 7. The extended end of the stamping hydraulic cylinder 8 is fixedly connected to the top center of the upper template 3. By extending and retracting the extended end of the stamping hydraulic cylinder 8, the lifting and lowering of the upper template 3 is controlled, so that the upper template 3 stamps the body material at the top of the lower template 2 to realize the processing of the body.

[0026] Furthermore, such as Figure 3 and Figure 4 As shown, hydraulic push rods 67 are fixedly installed on both sides of the bottom end of the equipment frame 7. The extended ends of the hydraulic push rods 67 are fixedly connected to the top center of the fixed plate 65. When the stamping hydraulic cylinder 8 drives the upper template 3 to move up and down, the hydraulic push rods 67 simultaneously drive the fixed plate 65 to move the pressing plate 61 up and down. Controlling the pressing operation of the pressing plate 61 through a separate drive device is beneficial to adjust the pressure and prevent the pressing plate 61 from shifting upward due to the springback of the body sheet during the stamping process, which would result in insufficient pressure and wrinkling of the body edge. This allows the die pressing mechanism to adapt to different stamping requirements and effectively improves the quality of the products processed by the device.

[0027] Furthermore, such as Figure 3 and Figure 4 As shown, the upper template 3 has four guide grooves 9, and the top of the mold base 1 is fixedly connected to four guide pillars 10. The positions of the guide pillars 10 correspond to the positions of the guide grooves 9 and are movably connected. When the stamping hydraulic cylinder 8 drives the upper template 3 to move up and down, the upper template 3 is movably connected to the surface of the guide pillars 10 through the guide grooves 9, ensuring the accuracy of the stamping position of the upper template 3.

[0028] The working principle of this utility model is as follows: First, the stamping sheet material required for the car body is placed between the lower template 2 and the upper template 3. Then, the stamping hydraulic cylinder 8 and the hydraulic push rod 67 are activated. By extending the extension end of the stamping hydraulic cylinder 8, the upper template 3 is pushed downward to stamp the sheet material. When the upper template 3 stamps downward, it drives the pressing edge assembly 6 to move downward, so that the pressing edge plate 61 also moves into the inner cavity of the pressing edge groove 4. At the same time, when the pressing edge plate 61 moves downward, the limiting rods 62 on both sides move to the top of the top plate 66. As the pressing edge plate 61 continues to move downward, the limiting rods 62 compress the pressure spring 64. At the same time, when the pressure spring 64 is compressed, the telescopic rod 63 also extends and retracts continuously, which plays a certain buffering role for the pressure spring 64. The top plate 66 ensures that the top of the pressure spring 64 can be evenly stressed. Based on its own elastic characteristics, the pressure of the pressure plate 61 is controlled to prevent the pressure plate 61 from pressing directly downwards, which would result in excessive pressure and breakage of the stamped car body edge. When the pressure plate 61 moves downwards, the extended end of the hydraulic push rod 67 also pushes the pressure plate 61 simultaneously. Controlling the pressing operation of the pressure plate 61 through a separate drive device is beneficial for adjusting the pressure and preventing the pressure plate 61 from shifting upwards due to the springback of the car body sheet during the die stamping process, which would result in insufficient pressure and wrinkling of the car body edge. This allows the die pressing mechanism to adapt to different stamping requirements and effectively improves the quality of the processed products. When the stamping hydraulic cylinder 8 drives the upper template 3 to move up and down, the upper template 3 is movably connected to the surface of the guide post 10 through the guide groove 9, ensuring the accuracy of the stamping position of the upper template 3.

[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A die pressing mechanism for car body processing, comprising a die base (1) and a lower template (2) fixedly installed at its top, wherein an upper template (3) is provided above the lower template (2), characterized in that: The lower template (2) has pressing grooves (4) on both sides of the middle part, and the upper template (3) has mounting grooves (5) at both ends. The inner cavity of the mounting groove (5) is provided with pressing components (6). The pressing assembly (6) includes a pressing plate (61) located in the inner cavity of the mounting groove (5). Both ends of the pressing plate (61) are fixedly connected to limit rods (62). Both sides of the bottom end of the inner cavity of the pressing groove (4) are fixedly connected to telescopic rods (63). The surface of the telescopic rods (63) is fitted with pressure springs (64).

2. The die pressing mechanism for car body processing according to claim 1, characterized in that: The top end of the pressure plate (61) is fixedly connected to a fixing plate (65), the top end of the telescopic rod (63) is fixedly connected to a top plate (66), and the pressure spring (64) is located at the bottom end of the top plate (66).

3. The die pressing mechanism for body processing according to claim 1, characterized in that: The position of the pressing plate (61) corresponds to the position of the pressing groove (4) and is movably connected to the inner cavity of the pressing groove (4). The position of the limiting rod (62) corresponds to the position of the top plate (66).

4. The die pressing mechanism for car body processing according to claim 1, characterized in that: The top of the mold base (1) is provided with an equipment frame (7), and a stamping hydraulic cylinder (8) is installed at the bottom center of the equipment frame (7). The protruding end of the stamping hydraulic cylinder (8) is fixedly connected to the top center of the upper template (3).

5. The die pressing mechanism for car body processing according to claim 4, characterized in that: Hydraulic jacks (67) are fixedly installed on both sides of the bottom end of the equipment frame (7), and the extended end of the hydraulic jacks (67) is fixedly connected to the top center of the fixed plate (65).

6. The die pressing mechanism for car body processing according to claim 1, characterized in that: The upper template (3) has four guide grooves (9), and the top of the mold base (1) is fixedly connected to four guide pillars (10). The positions of the guide pillars (10) correspond to the positions of the guide grooves (9) and are movably connected.

Images