Punching die for mounting hole of side body of automobile

Abstract

The utility model relates to the technical field of stamping die equipment, and discloses an automobile side body mounting hole punching die which comprises a lower die, and the lower die is provided with a supporting base used for positioning a workpiece and a blanking base used for punching the negative angle bent position of the workpiece. The supporting seat comprises a supporting template fixedly arranged and a back shore template arranged towards one side of the blanking seat in a sliding manner, the back shore template is used for back shore the inner wall of the negative angle bending of the workpiece, a blanking tool bit is arranged on one side of the blanking seat towards the supporting seat, and a blanking hole matched with the blanking tool bit is formed in the back shore template. The punching die has the effect that the punching precision of the punching die on the mounting hole in the automobile side body workpiece is improved.

Description

Technical Field

[0001] The present application relates to the technical field of stamping dies, and in particular to a punching die for mounting holes on the side of an automobile body. Background Art

[0002] In the automobile manufacturing process, stamping dies are widely used in the molding of various parts of the car body. With the diversification of automobile design, the car body structure is becoming more and more complex. In order to punch out through holes for installation and avoidance on the stamped parts of various parts of the car body, it is necessary to further use the punching die in the stamping die to punch out standard through holes at specific positions of the stamped parts.

[0003] Reference Figure 1 and Figure 2 A mounting hole 012 is provided at the negative angle bend 011 of the automobile side body workpiece 01.

[0004] Usually, before using a punching die to punch out the mounting holes of a car side body workpiece, the car side body workpiece needs to be placed on the punching lower die. Since the mounting holes to be opened are located at the negative angle bend of the car side body workpiece, the car side body workpiece cannot be placed on the lower die for a die that just matches the negative angle bend of the car side body workpiece, resulting in the inability to perform the punching operation.

[0005] However, the lower die that can directly place the workpiece with a negative angle bend from top to bottom will have a gap between the lower die and the inner wall of the opening. At this time, when the punching die is used to punch the workpiece, it is difficult to support the workpiece with the opening, causing the workpiece to shift during the punching process, thereby reducing the punching accuracy of the punching die for the mounting holes on the workpiece on the side body of the automobile. Utility Model Content

[0006] In order to improve the punching accuracy of the punching die for mounting holes on a side body workpiece of an automobile, the present application provides a punching die for mounting holes on the side body of an automobile.

[0007] The present application provides a punching die for mounting holes on the side of an automobile body, which adopts the following technical solution:

[0008] A punching die for mounting holes on the side of an automobile body comprises a lower die, on which a support seat for positioning a workpiece and a punching seat for punching holes at a negative angle bend of the workpiece are provided, the support seat comprises a fixed support template and a top support template slidably arranged toward one side of the punching seat, the top support template is used to support the inner wall of the negative angle bend of the workpiece, the punching seat is provided with a punching head on one side of the support seat, and a blanking hole is provided on the top support template to match the punching head.

[0009] By adopting the above technical solution, when using the punching die, first place the workpiece on the support seat and position the workpiece through the support template; then, the support template is driven to slide toward the punching seat to support the inner wall of the negative angle bend of the workpiece to ensure the stability of the workpiece during the punching process; then, the punching head slides toward the workpiece under the drive of the punching seat to perform punching operations on the workpiece.

[0010] Optionally, the lower mold is provided with a first driving component for driving the top support template to slide, the first driving component includes a first driving block arranged at the bottom of the upper mold, a push mold slidably arranged on the lower mold corresponding to the first driving block, an inclined pushing block arranged on the side of the push mold toward the top support template, and an inclined abutment block arranged on the top support template corresponding to the inclined pushing block, and the first driving block and the push mold, and the inclined pushing block and the inclined abutment block slide against each other through inclined surfaces to achieve directional driving.

[0011] By adopting the above technical scheme, when the upper mold is pressed downward, the first driving block and the inclined surface of the push mold slide against each other, and the first driving block pushes the push mold to move toward the direction of the top support template, and in the process of the sliding of the top support template, the inclined pushing block on the push mold contacts the inclined supporting block on the top support template, and pushes the inclined supporting block to slide toward the direction of the punching seat, and simultaneously drives the top support template to slide toward the direction of the punching seat, thereby realizing the top support template supporting the inner wall of the negative angle bend of the workpiece.

[0012] Optionally, the lower mold is provided with a second driving assembly for driving the punching seat to slide, the second driving assembly includes a second driving block arranged at the bottom of the upper mold and a push rod corresponding to the first driving block and arranged on the punching seat, when the upper mold is pressed downward, the push surface of the second driving block on one side of the push rod contacts the push rod and pushes the push rod in the direction toward the support seat.

[0013] By adopting the above technical solution, when the upper mold is pressed down, the second driving block and the side of the push rod contact each other, pushing the punching seat to slide toward the workpiece to complete the punching operation. By setting the first driving component and the second driving component, the punching operation is automated.

[0014] Optionally, a rotating sleeve is provided on the push rod, and the second driving block is arranged to contact the rotating wheel during the pressing process.

[0015] By adopting the above technical solution, the second driving block is set against the rotating wheel during the pressing process. By setting the rotating wheel, the friction between the second driving block and the push rod is reduced, the sliding of the punching seat is smoother, and the punching accuracy is improved.

[0016] Optionally, a blanking channel is provided in the lower mold and connected to the blanking hole, and the blanking channel extends to the outer wall of the lower mold.

[0017] By adopting the above technical solution, after punching is completed, the waste material falls into the blanking channel through the blanking hole and is discharged from the mold, which is convenient for the staff to centrally process the punching waste material.

[0018] Optionally, a clearing component is provided on the punching seat and connected to the punching head, a first channel is vertically opened on the punching seat, a second channel is jointly opened on the punching seat and the punching head along the sliding direction of the punching head, the first channel and the second channel are connected end to end, the clearing component includes a piston rod vertically slidably arranged in the first channel and a clearing rod slidably arranged in the second channel along the sliding direction of the punching head, the piston rod and the clearing rod block the head and tail ends of the first channel and the second channel, and connect the first channel and the second channel to form a closed air cavity, when the mold is separated, the end of the piston rod extends out of the punching seat, and when the mold is closed, the end of the clearing rod passes through a blanking hole and extends into the blanking channel.

[0019] By adopting the above technical solution, during the punching operation, the piston rod and the dredging rod maintain the same relative position under the action of the air cavity pressure. When the mold is closed, the piston rod slides downward under the pressure of the upper mold, and compresses the air in the air cavity and pushes it into the second channel, thereby pushing the dredging rod to slide in the direction of the blanking channel. The end of the dredging rod is penetrated with a blanking hole and the waste is pushed from the blanking hole into the blanking channel to be discharged from the mold. By setting up the dredging component, the waste generated by punching can be cleaned in time to ensure the continuity of the punching operation.

[0020] Optionally, a recessed groove is coaxially formed at the inner top of the first channel, an end block is provided at the top end of the piston rod, a spring is sleeved on the piston rod, the spring is located in the recessed groove and abuts between the bottom wall of the end block and the bottom wall of the recessed groove.

[0021] By adopting the above technical solution, when punching is completed, the upper mold rises and separates the mold. At this time, the piston rod slides upward under the elastic recovery action of the spring, absorbing the air in the air cavity into the first channel, thereby driving the clearing rod to slide close to the punching seat to be accommodated in the punching head, further ensuring the continuity of the punching operation.

[0022] Optionally, nitrogen springs are arranged between the punching seat, the supporting template and the push die and the lower die, and the nitrogen springs are used to assist the punching seat, the supporting template and the push die to return to their initial positions during mold separation.

[0023] By adopting the above technical solution, nitrogen springs are used to assist the punching seat, the top support template and the push die to restore the initial positions when the mold is separated, so as to ensure the continuity of the punching operation.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When using the punching die, first place the workpiece on the support seat and position the workpiece through the support template; then, the supporting template is driven to slide toward the punching seat to support the inner wall of the negative angle bend of the workpiece to ensure the stability of the workpiece during the punching process; then, the punching cutter head slides toward the workpiece under the drive of the punching seat to punch the workpiece;

[0026] 2. When the upper mold is pressed down, the first driving block and the inclined surface of the push mold slide against each other, and the first driving block pushes the push mold to move toward the top support template. In the process of the top support template sliding, the oblique push block on the push mold contacts the oblique abutment block on the top support template, and pushes the oblique abutment block to slide toward the punching seat, and simultaneously drives the top support template to slide toward the punching seat, so as to realize the top support template supporting the inner wall of the negative angle bend of the workpiece;

[0027] 3. When the upper die is pressed down, the second drive block and the side of the push rod collide with each other, pushing the punching seat to slide toward the workpiece to complete the punching operation. By setting the first drive assembly and the second drive assembly, the automation of the punching operation is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the automobile side body workpiece.

[0029] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0030] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0031] Figure 4 It is a schematic diagram showing the positional relationship between the punching seat, the top support template and the push die in the embodiment of the present application.

[0032] Figure 5 It is a cross-sectional view showing the positional relationship between the dredging component, the punching seat and the top support template in the embodiment of the present application.

[0033] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0034] Description of reference numerals:

[0035] 01. Workpiece; 011. Negative angle bend; 012. Mounting hole; 1. Lower die; 11. Blanking channel; 2. Support seat; 21. Support template; 22. Top support template; 221. Blanking hole; 3. Punching seat; 31. Punching tool head; 4. First drive assembly; 41. First drive block; 42. Push die; 43. Push block; 44. Oblique block; 5. Second drive assembly; 51. Second drive block; 52. Push rod; 521. Rotary wheel; 6. Nitrogen spring; 7. Clearing assembly; 71. Piston rod; 711. End block; 712. Spring; 72. Clearing rod; 8. First channel; 81. Sink; 9. Second channel. DETAILED DESCRIPTION

[0036] The following is combined with Figure 2-6 This application is described in further detail.

[0037] The embodiment of the present application discloses a punching die for mounting holes on the side body of an automobile.

[0038] Reference Figures 2 to 5 A punching die for mounting holes on the side of a car body includes a lower die 1, on which a support seat 2 and a punching seat 3 are arranged, the support seat 2 includes a support template 21 and a top support template 22, and the support template 21 and the punching seat 3 are relatively slidably arranged on the lower die 1, a punching cutter head 31 is coaxially fixedly arranged on one side of the punching seat 3 facing the support seat 2, and a blanking hole 221 is provided on the top support template 22 to match the punching cutter head 31, a blanking channel 11 is provided in the lower die 1 to communicate with the blanking hole 221, and the blanking channel 11 extends to the outer wall of the lower die 1. The lower die 1 is also provided with a first driving component 4 to drive the top support template 22 to slide, and a second driving component 5 to drive the punching seat 3 to slide.

[0039] Reference Figures 2 to 5 When using the punching die, first place the workpiece 01 on the support seat 2, and position the workpiece 01 through the support template 21; then, the first driving component 4 drives the supporting template 22 to slide toward the punching seat 3 to support the inner wall of the negative angle bend 011 of the workpiece 01, ensuring the stability of the workpiece 01 during the punching process; then, the second driving component 5 drives the punching seat 3 to slide toward the workpiece 01, and the punching tool head 31 slides toward the workpiece 01 under the drive of the punching seat 3 to punch the workpiece 01. After the punching is completed, the waste material falls into the blanking channel 11 through the blanking hole 221 and is discharged from the die.

[0040] Reference Figure 3 and Figure 4The first driving assembly 4 includes a first driving block 41, a push die 42, an oblique push block 43 and an oblique abutment block 44. The first driving block 41 is fixedly arranged at the bottom of the upper die corresponding to the support template 21. The push die 42 is slidably arranged on the lower die 1 along the sliding direction perpendicular to the blanking seat 3, and the push die 42 is located between the support template 21 and the lower die 1. The oblique push block 43 is fixedly arranged on the side wall of the push die 42 facing the top support template 22, and the oblique abutment block 44 is fixedly arranged on the top support template 22 corresponding to the oblique push block 43. The first driving block 41 and the push die 42, the oblique push block 43 and the oblique abutment block 44 are mutually opposed and slid by setting inclined surfaces to realize the directional drive. A nitrogen spring 6 is fixedly arranged between the top support template 22 and between the push die 42 and the lower die 1.

[0041] Reference Figure 3 , Figure 4 and Figure 5 The second driving assembly 5 includes a second driving block 51 and a push rod 52. The second driving block 51 is fixedly arranged at the bottom of the upper mold corresponding to the punching seat 3. The push rod 52 is perpendicular to the sliding direction of the punching seat 3 and is fixedly arranged on the punching seat 3. A rotating wheel 521 is rotatably sleeved on the push rod 52. The second driving block 51 is set against the rotating wheel 521 during the pressing process, and the rotation is pushed in the direction toward the support seat 2, thereby driving the punching seat 3 to slide toward the top support template 22. A nitrogen spring 6 is fixedly arranged between the punching seat 3 and the lower mold 1.

[0042] Reference Figure 5 and Figure 6 In order to prevent waste from clogging the blanking hole 221, a clearing component 7 is provided on the blanking seat 3 and connected to the blanking head 31. A first channel 8 is vertically opened on the blanking seat 3. A second channel 9 is jointly opened on the blanking seat 3 and the blanking head 31 along the sliding direction of the blanking head 31, and the first channel 8 and the second channel 9 are connected end to end.

[0043] Reference Figure 5 and Figure 6 The dredging assembly 7 includes a piston rod 71 and a dredging rod 72. The piston rod 71 is vertically slidably arranged in the first channel 8. A sink groove 81 is coaxially provided at the inner top of the first channel 8. An end block 711 is coaxially fixedly provided at the top of the piston rod 71. A spring 712 is sleeved on the piston rod 71. The spring 712 is located in the sink groove 81 and abuts between the bottom wall of the pressure block and the inner bottom wall of the sink groove 81. The dredging rod 72 is slidably arranged in the second channel 9 along the sliding direction of the punching cutter head 31.

[0044] Reference Figure 5 and Figure 6The piston rod 71 and the dredging rod 72 block the first and second ends of the first channel 8 and the second channel 9, and connect the first channel 8 and the second channel 9 to form a closed air cavity. When the mold is opened, the end of the piston rod 71 extends out of the blanking seat 3, and when the mold is closed, the end of the dredging rod 72 passes through the blanking hole 221 and extends into the blanking channel 11.

[0045] The implementation principle of a punching die for a mounting hole on the side body of an automobile according to an embodiment of the present application is as follows: when using the punching die, firstly place the workpiece 01 on the support seat 2;

[0046] When the upper mold is pressed downward, the inclined surfaces of the first driving block 41 and the push mold 42 slide against each other, and the first driving block 41 pushes the push mold 42 to move toward the supporting template 22, and in the process of the sliding of the supporting template 22, the oblique pushing block 43 on the push mold 42 contacts the oblique abutting block 44 on the supporting template 22, and pushes the oblique abutting block 44 to slide toward the punching seat 3, and simultaneously drives the supporting template 22 to slide toward the punching seat 3, at this time, the supporting template 22 is supported on the inner wall of the negative angle bend 011 of the workpiece 01;

[0047] When the upper mold is pressed down, the second driving block 51 and the side of the rotating wheel 521 contact each other, pushing the blanking seat 3 to slide toward the workpiece 01 to complete the punching operation. During the punching process, the top of the end block 711 of the piston rod 71 slides downward under the pressure of the upper mold, and compresses the air in the air cavity and pushes it into the second channel 9, thereby pushing the clearing rod 72 to slide toward the blanking channel 11. The end of the clearing rod 72 is penetrated by the blanking hole 221 and pushes the waste from the blanking hole 221 into the blanking channel 11 to discharge the mold.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A punching die for a mounting hole on the side of an automobile body, comprising a lower die (1), characterized in that: The lower die (1) is provided with a support seat (2) for positioning the workpiece (01) and a punching seat (3) for punching holes at the negative angle bend (011) of the workpiece (01); the support seat (2) comprises a fixed support template (21) and a supporting template (22) slidably arranged toward one side of the punching seat (3); the supporting template (22) is used for supporting the inner wall of the negative angle bend (011) of the workpiece (01); a punching head (31) is arranged on the side of the punching seat (3) facing the support seat (2), and a blanking hole (221) is provided on the supporting template (22) to match the punching head (31).

2. The automobile side body mounting hole punching die according to claim 1, characterized in that: The lower mold (1) is provided with a first driving assembly (4) for driving the supporting template (22) to slide. The first driving assembly (4) comprises a first driving block (41) arranged at the bottom of the upper mold, a push mold (42) slidably arranged on the lower mold (1) corresponding to the first driving block (41), an inclined pushing block (43) arranged on the side of the push mold (42) facing the supporting template (22), and an inclined abutting block (44) arranged on the supporting template (22) corresponding to the inclined pushing block (43). The first driving block (41) and the push mold (42), and the inclined pushing block (43) and the inclined abutting block (44) are arranged to slide against each other by setting inclined surfaces to realize directional driving.

3. The automobile side body mounting hole punching die according to claim 2, characterized in that: The lower mold (1) is provided with a second driving assembly (5) for driving the punching seat (3) to slide. The second driving assembly (5) comprises a second driving block (51) arranged at the bottom of the upper mold and a push rod (52) arranged on the punching seat (3) corresponding to the first driving block (41). When the upper mold is pressed downward, the push surface of the second driving block (51) on one side of the push rod (52) contacts the push rod (52) and pushes the push rod (52) in a direction toward the support seat (2).

4. The automobile side body mounting hole punching die according to claim 3, characterized in that: A rotating wheel (521) is rotatably sleeved on the push rod (52), and the second driving block (51) is disposed in contact with the rotating wheel (521) during the pressing process.

5. The automobile side body mounting hole punching die according to claim 1, characterized in that: A blanking channel (11) is provided in the lower mold (1) and is connected to the blanking hole (221), and the blanking channel (11) extends to the outer wall of the lower mold (1).

6. The automobile side body mounting hole punching die according to claim 5, characterized in that: The punching seat (3) is connected to the punching head (31) and is provided with a dredging assembly (7); the punching seat (3) is provided with a first channel (8) in a vertical direction; the punching seat (3) and the punching head (31) are provided with a second channel (9) in a sliding direction of the punching head (31); the first channel (8) and the second channel (9) are connected end to end; the dredging assembly (7) comprises a piston rod (71) slidably arranged in the first channel (8) in a vertical direction and a piston rod (71) slidably arranged in the first channel (8) in a vertical direction. 1) A dredging rod (72) is slidably arranged in the second channel (9) in a sliding direction, the piston rod (71) and the dredging rod (72) block the head and tail ends of the first channel (8) and the second channel (9), and make the first channel (8) and the second channel (9) connected to form a closed air cavity; when the mold is opened, the end of the piston rod (71) extends out of the blanking seat (3); when the mold is closed, the end of the dredging rod (72) passes through the blanking hole (221) and extends into the blanking channel (11).

7. The automobile side body mounting hole punching die according to claim 6, characterized in that: A sink groove (81) is coaxially formed at the inner top of the first channel (8); an end block (711) is provided at the top end of the piston rod (71); a spring (712) is sleeved on the piston rod (71); the spring (712) is located in the sink groove (81) and abuts against a bottom wall of the end block (711) and an inner bottom wall of the sink groove (81).

8. The automobile side body mounting hole punching die according to claim 2, characterized in that: A nitrogen spring (6) is arranged between the punching seat (3), the supporting template (22) and the push die (42) and the lower mold (1); the nitrogen spring (6) is used to assist the punching seat (3), the supporting template (22) and the push die (42) to return to their initial positions when the mold is separated.

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