Punching die

Abstract

The utility model provides a punching die, which comprises an upper die and a lower die, a cavity for placing a workpiece is arranged between the upper die and the lower die, a lower punch and a female die are arranged on the lower die and are arranged in the cavity, the lower punch is provided with a punching part, the female die is provided with a bearing part and a first blanking hole, the punching part is arranged above the first blanking hole, and the bearing part is arranged above the first blanking hole. In the mold opening direction, the punching part is higher than the bearing part, a channel extending in the first direction is formed between the punching part and the bearing part, and the channel communicates with the cavity and the first discharging hole; a driving rod is arranged on the upper die, and during die assembly, the driving rod can penetrate through the cavity and extend into the lower die so as to drive the lower punch to perform downward punching movement; the punching die is not limited by the structure of a workpiece, can punch a single-side groove wall, and ensures the quality of the workpiece.

Description

Technical Field

[0001] The utility model relates to the field of punching structures, in particular to a punching die. Background Art

[0002] like Figure 1 and Figure 2 The workpiece shown is an aluminum profile with a groove on it. The groove extends along the length of the workpiece, and a notch is provided on one side of the groove. The groove walls on both sides are arranged opposite to each other in the up and down directions. The workpiece needs to be punched on the lower side wall of the groove to form two first incisions.

[0003] Existing punching dies typically place a die and a punch on an upper die and a lower die, respectively, and perform punching by utilizing the relative motion of the punch and die. However, due to structural limitations of the upper sidewall of the groove, existing punching dies are unable to perform the punching required for the aforementioned workpiece. Therefore, a punching die capable of performing the aforementioned punching is urgently needed. Utility Model Content

[0004] The utility model aims to provide a punching die which is not restricted by the structure of a workpiece and can punch a single-side groove wall.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a punching die, comprising an upper die and a lower die, a cavity for placing a workpiece is provided between the upper die and the lower die, a lower punch and a die are provided on the lower die, the lower punch and the die are both provided in the cavity, the lower punch is provided with a punching part, the die is provided with a supporting part and a first blanking hole, the punching part is provided above the first blanking hole, in the mold opening direction, the punching part is higher than the supporting part, and a channel extending along the first direction is formed between the punching part and the supporting part, and the channel is respectively connected to the cavity and the first blanking hole; a driving rod is provided on the upper die, and when the mold is closed, the driving rod can pass through the cavity and extend into the lower die to drive the lower punch to move downward.

[0006] It can be seen from the above scheme that by arranging both the lower punch and the die on the lower die, the workpiece is placed between the lower die and the upper die. At this time, the second groove wall of the workpiece groove is embedded in the channel and supported on the supporting part, that is, the punching part extends into the groove of the workpiece, which is convenient for punching the second groove wall of the workpiece groove when the punching part moves downward, and the cut waste is automatically discharged through the first blanking hole; the utility model is not limited by the workpiece structure, and can perform precise punching on the second groove wall of the workpiece groove, which is beneficial to avoid deformation of the groove wall of the groove and ensure the quality of the workpiece.

[0007] A further solution is that the lower die includes a lower template and a movable plate assembly, the lower punch is movably connected to the lower template through a punch mounting seat, and the punch mounting seat is connected to the movable plate assembly, and the driving rod passes through the lower template and abuts against the movable plate assembly to force the movable plate assembly to drive the punch mounting seat and the lower punch to move downward.

[0008] It can be seen from the above scheme that by arranging a driving rod on the upper die, when the punching die is closed, the driving rod can pass through the cavity and extend into the lower die, and push the movable plate assembly downward, thereby driving the punch mounting seat and the lower punch to move downward, thereby realizing the punching action.

[0009] A further solution is that the lower die further comprises an elastic member, which abuts between the movable plate assembly and the punch mounting seat, so that the punch mounting seat and the lower punch have elastic potential energy to move upward.

[0010] It can be seen from the above solution that by providing the elastic member, the punching portion can be higher than the supporting portion before punching, ensuring that the lower groove wall of the workpiece can be embedded in the channel.

[0011] A further solution is that a first through hole is opened on the movable plate assembly; the lower mold also includes a bottom plate, the bottom plate is arranged below the movable plate assembly, and a second through hole is opened on the bottom plate, and the first blanking hole, the first through hole and the second through hole are connected up and down.

[0012] It can be seen from the above scheme that, through the above arrangement, the waste material punched each time can be automatically discharged from the punching die, avoiding manual removal of the waste material.

[0013] A further solution is that a first limit block and a second limit block are relatively arranged on the lower mold, and an aisle extending along a first direction is formed between the first limit block and the second limit block. The aisle and the channel are arranged and connected along the first direction, and the first direction is perpendicular to the mold opening direction.

[0014] It can be seen from the above scheme that by setting the first limit block and the second limit block to form an aisle, the workpiece can be easily moved along the first direction so that it can be partially pushed into the aisle and channel. The setting of the aisle is conducive to guiding and limiting the workpiece, and is conducive to improving the accuracy of the punching position.

[0015] A further solution is that the lower mold is provided with loading and unloading ends and stop ends on its opposite sides respectively, the loading and unloading ends are provided with support plates, and the support plates are provided with guide blocks, which extend along a first direction perpendicular to the mold opening direction.

[0016] It can be seen from the above scheme that by providing the guide block, the workpiece can be positioned before entering the cavity, which is beneficial to improving the position accuracy of the workpiece loading.

[0017] A further solution is that an in-place detector and a stop block are provided on the stop end, the detection end of the in-place detector is arranged toward the loading and unloading end, and the stop block is arranged on one side of the detection end.

[0018] It can be seen from the above scheme that a stop block is set to stop the depth of the workpiece inserted into the cavity to achieve positioning in this direction; an in-place detector is set to detect whether the workpiece is inserted into place. If so, the mold closing and punching action can be started, which is beneficial to saving unnecessary waiting time.

[0019] A further solution is that a first positioning block and a second positioning block are also provided on the stop end, and the first positioning block and the second positioning block are respectively arranged on both sides of the second direction of the detection end, and the second direction is perpendicular to the mold opening direction and the first direction respectively; in the first direction, the second positioning block is located on the rear side of the first positioning block, and the second positioning block is provided with a limiting groove extending along the first direction.

[0020] It can be seen from the above solution that by providing a limiting groove for local cooperation and connection with the workpiece, it is beneficial to achieve the positioning of the end of the workpiece and further improve the position accuracy of the workpiece.

[0021] A further solution is that a first partition is provided on the lower mold, and the first partition is provided on the outside of the cavity for abutting against the upper mold.

[0022] It can be seen from the above solution that the first partition is provided to abut against the upper die, thereby preventing the upper die from damaging the workpiece.

[0023] A further solution is that an upper punch is provided on the upper die; a second blanking hole is opened on the lower die, and the upper punch can pass through the cavity and extend into the second blanking hole.

[0024] It can be seen from the above solution that the upper punch is provided to punch the side of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a workpiece to be punched using this embodiment.

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0027] Figure 3 It is a top view of an embodiment of the present utility model.

[0028] Figure 4 yes Figure 3 Cross-sectional view at the middle BB.

[0029] Figure 5 yes Figure 4 Enlarged view of point D in the middle.

[0030] Figure 6 It is a structural diagram of the lower mold in an embodiment of the present utility model.

[0031] Figure 7 yes Figure 6 Enlarged view of point E in the middle.

[0032] Figure 8 It is an exploded view of the punch mounting seat, the groove and the lower punch in the embodiment of the utility model.

[0033] Figure 9 It is a structural diagram of an embodiment of the present invention when a workpiece is placed on a lower die.

[0034] Figure 10 yes Figure 3 Cross-sectional view at CC.

[0035] Figure 11 It is a structural diagram of the upper mold in an embodiment of the present utility model.

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0037] See also Figure 1 and Figure 2 The workpiece 10 is an aluminum profile. The workpiece 10 is in the shape of an elongated strip. A groove 101 and a guide groove 102 are provided on the workpiece 10. Both the groove 101 and the guide groove 102 extend along the length direction of the workpiece 10. The groove 101 has a first notch on the width side of the workpiece 10. The groove 101 has a first groove wall 1010 and a second groove wall 1011 on the upper and lower sides of the first notch, respectively. The second groove wall 1011 has at least one first notch 1012. This embodiment uses the following punching die to punch out the first notch 1012. The guide groove 102 has a second notch downward. A second notch 103 is also provided on one side of the workpiece 10 in the width direction. The second notch 103 extends from the edge of the workpiece 10 to the middle. A positioning groove 104 is provided at one end of the workpiece 10 in the length direction.

[0038] See also Figures 3 to 9 The present embodiment provides a punching die, comprising an upper die 20 and a lower die 30, with a cavity for placing a workpiece 10 provided between the upper die 20 and the lower die 30. Specifically:

[0039] The upper mold 20 comprises, from top to bottom, a top plate 1, an upper backing plate 2, an upper mounting plate 3, and an upper mold plate 4. The upper mold 20 is also provided with a drive rod 5, which is disposed in the middle of the upper mold 20. One end of the drive rod 5 is disposed within the upper mounting plate 3 and abuts the bottom wall of the upper backing plate 2. The other end of the drive rod 5 extends downward through the upper mold plate 4 toward the lower mold 30.

[0040] The lower die 30 comprises, from top to bottom, a lower die plate 6, a movable plate assembly 7, and a base plate 8. The lower die plate 6 is provided with two punching stations, capable of simultaneously punching two workpieces 10. The movable plate assembly 7 is positioned in the lower center of the lower die plate 6 and can move back and forth relative to the lower die plate 6 in the mold opening direction.

[0041] The lower die 30 is provided with a punch mounting seat 61, a lower punch 62, and a die 63, all of which are disposed within the cavity. The lower punch 62 is movably connected to the lower die plate 6 via the punch mounting seat 61, and the punch mounting seat 61 is connected to the movable plate assembly 7. Specifically, the movable plate assembly 7 includes a first movable plate 71 and a second movable plate 72 disposed one above the other. The punch mounting seat 61 is disposed within the first movable plate 71 and abuts against the top wall of the second movable plate 72. The punch mounting seat 61 is connected to the second movable plate 72 via a connector (not shown in the drawings), which may be a screw or bolt. The punch mounting seat 61 can move with the movable plate assembly 7. The lower portion of the lower punch 62 is fixedly connected to the punch mounting seat 61, and the upper portion of the lower punch 62 protrudes from the surface of the lower die plate 6. A punching portion 621 is provided on the upper portion of the lower punch 62. The die 63 is provided with a first blanking hole 631 and two supporting portions 632 arranged along a first direction. The first blanking hole 631 is located between the two supporting portions 632. The first direction is perpendicular to the mold opening direction. The punching portion 621 is located above the first blanking hole 631 and, in the mold opening direction, is higher than the supporting portions 632. A channel 64 extending along the first direction is formed between the punching portion 621 and the supporting portions 632. The channel 64 is connected to the cavity and the first blanking hole 631 respectively. The channel 64 is used to allow the second groove wall 1011 of the groove 101 of the workpiece 10 to pass through, so that the second groove wall 1011 is supported on the supporting portions 632. The punching portion 621 extends into the groove 101 and is located above the second groove wall 1011.

[0042] The upper die 20 is provided with a driving rod 5, and the lower die plate 6 is provided with a driving through-hole 60, which corresponds to the movable plate assembly 7 in the upper and lower directions. When the die is closed, the driving rod 5 passes through the cavity and the driving through-hole 60 and abuts against the movable plate assembly 7, forcing the movable plate assembly 7 to drive the punch mounting seat 61 and the lower punch 62 to move downward, so that the punching portion 621 punches the second groove wall 1011 of the groove 101 of the workpiece 10, forming a first notch 1012 in the second groove wall 1011, thereby achieving the punching purpose.

[0043] In order to ensure that the punching portion 621 of the lower punch 62 is higher than the supporting portion 632 before the mold is closed to form a channel 64 extending along the first direction, the lower mold 30 of this embodiment further includes an elastic member (not shown in the figure). A second preset gap is provided between the top wall of the second movable plate 72 and the bottom wall of the punch mounting seat 61. The elastic member is provided within the second preset gap. The elastic member is preferably a spring bar, which is sleeved on the outside of the connecting member and abuts between the top wall of the second movable plate 72 and the bottom wall of the punch mounting seat 61, so that the punch mounting seat 61 and the lower punch 62 have elastic potential energy to move upward, so that when the mold is opened, under the elastic force of the elastic member, the punch mounting seat 61 and the lower punch 62 automatically move upward, and the channel 64 returns to normal, making it convenient to remove the workpiece 10 or replace another workpiece 10. Moreover, when the workpiece 10 is placed in the lower die 30 , the punching portion 621 can automatically fine-tune its position in the up and down directions to accommodate manufacturing errors of the workpiece 10 , ensure that the workpiece 10 is placed in place, and prevent the punching portion 621 from scratching the workpiece 10 .

[0044] To facilitate the automatic discharge of waste, the movable plate assembly 7 of this embodiment is provided with first through-holes, which include an upper through-hole 711 provided on the first movable plate 71 and a lower through-hole 721 provided on the second movable plate 72. A second through-hole 81 is provided through-hole on the bottom plate 8. The first blanking hole 631, the first through-hole, and the second through-hole 81 are connected vertically, facilitating the downward discharge of waste from the punching die.

[0045] exist Figure 6 and Figure 7 In the embodiment, each punching position is provided with two lower punches 62 and two concave dies 63, and the lower punches 62 and the concave dies 63 are provided in a one-to-one correspondence.

[0046] In order to improve the accuracy of the position of the workpiece 10, a first stopper 65 and a second stopper 66 may be provided on one side of the lower punch 62. In this embodiment, two first stoppers 65 and two second stoppers 66 are preferably provided between the two lower punches 62, and the first stoppers 65 and the second stoppers 66 are provided in a one-to-one correspondence. A passage 67 extending along the first direction is formed between the first stopper 65 and the second stopper 66, and the passage 67 is connected to the channel 64. The cross-sectional shape of the passage 67 matches the external structure of the groove 101 of the workpiece 10.

[0047] The lower die 30 is provided with loading and unloading terminals and stopper terminals on opposite sides, i.e., at both ends in the first direction. The loading and unloading terminals are provided with support plates 9. Support plates 9 are provided with guide blocks 91 corresponding to each punching position. The guide blocks 91 extend along the first direction. The cross-sectional shape of the guide blocks 91 matches the guide grooves 102 of the workpiece 10, ensuring a clearance fit between the guide grooves 102 and the guide blocks 91. This ensures that the workpiece 10 moves along the extension direction of the guide blocks 91 when the workpiece 10 is placed in or removed from the die.

[0048] The stop end is provided with an in-position detector 40 and a stopper 50. The in-position detector 40 is provided in a one-to-one correspondence with the punching station. The detection end 401 of the in-position detector 40 is positioned toward the loading and unloading end, and the stopper 50 is positioned to one side of the detection end 401. Both punching stations can be provided with a single stopper 50, with the ends of the stopper 50 respectively stopping the two workpieces 10. Alternatively, the two punching stations can be provided with independent stops, each used to stop the corresponding workpiece. The former is preferred in this embodiment.

[0049] Furthermore, a first positioning block 60 and a second positioning block 70 are provided on the stop end. The first positioning block 60 and the second positioning block 70 are respectively provided on both sides of the second direction of the detection end 401, and the second positioning block 70 is provided close to the stop block 50. The second direction is perpendicular to the mold opening direction and the first direction. A limiting groove 701 is provided on the second positioning block 70. The limiting groove 701 extends along the first direction. The limiting groove 701 is provided with a stop groove wall on its upper side and / or left and right sides. In this embodiment, the cross-sectional shape of the limiting groove 701 is set to be "L"-shaped, and it is provided with a stop groove wall on the upper side, left side, and right side. A portion of the workpiece 10 can be embedded in the limiting groove 701 and stopped by the stop groove wall, which is conducive to improving the position accuracy of the end of the workpiece 10.

[0050] In the first direction, the second positioning block 70 is located on the rear side of the first positioning block 60, so that the positioning groove 104 of the workpiece 10 is first positioned and matched with the first positioning block 60 to improve the position accuracy of the end of the workpiece 10, ensure that a part of the workpiece 10 is directly opposite to the limiting groove 701, and facilitate the accurate embedding of this part of the workpiece 10 into the limiting groove 701.

[0051] A first partition 68 is provided on both the left and right sides of the lower template 6. The first partition 68 is provided on the outside of the cavity. The top wall of the first partition 68 is higher than the top wall of the lower template 6. It is used to abut against the upper mold 20 to play a supporting role and prevent the upper mold 20 from crushing the workpiece 10.

[0052] See also Figure 10 and Figure 11 , and combined with Figure 1 and Figure 4 The upper die 20 is equipped with two upper punches 80, one on each side of the drive rod 5, corresponding to each of the two punching positions. One end of the upper punch 80 is positioned within the upper mounting plate 3 and abuts the bottom wall of the upper backing plate 2. The other end of the upper punch 80 extends through the upper die plate 4 toward the lower die 30. The upper punch 80 is used to punch the second notch 103 of the workpiece 10.

[0053] In the mold opening direction, a first preset gap is defined between the upper mounting plate 3 and the upper mold plate 4. Before mold closing, the upper punch 80 does not protrude beyond the bottom wall of the upper mold plate 4 to protect it. During mold closing, the first preset gap between the upper mounting plate 3 and the upper mold plate 4 gradually decreases, allowing the upper punch 80 to protrude downward from the upper mold plate 4 and penetrate deep into the lower mold 30 for punching and cutting.

[0054] A second blanking hole 69 is opened on the lower die 30 . Specifically, the second blanking hole 69 passes through the lower die plate 6 , and the upper punch 80 can pass through the cavity and extend into the second blanking hole 69 to ensure that a second incision 103 is cut on the workpiece 10 .

[0055] The lower die 30 further includes two lower pads 90, which are disposed between the lower die plate 6 and the bottom plate 8, and are disposed on either side of the movable plate assembly 7. A third through-hole 901 is formed through the lower pads 90. The bottom plate 8 is provided with a fourth through-hole 82, which connects the second blanking hole 69, the third through-hole 901, and the fourth through-hole 82, facilitating the discharge of waste material from the second blanking position.

[0056] In summary, it can be seen that the utility model arranges the lower punch 62 and the die 63 on the lower die 30, and places the workpiece 10 between the lower die 30 and the upper die 20. At this time, the second groove wall 1011 of the groove 101 of the workpiece 10 is embedded in the channel 64 and supported on the supporting portion 632, that is, the punching portion 621 extends into the groove 101 of the workpiece 10, so that the punching portion 621 can punch the second groove wall 1011 of the groove 101 of the workpiece 10 when moving downward, and the cut waste is automatically discharged through the first blanking hole 631; the utility model is not limited by the workpiece structure, and can perform precise punching on the second groove wall 1011 of the groove 101 of the workpiece 10, which is beneficial to avoid deformation of the groove wall of the groove 101 and ensure the quality of the workpiece 10.

[0057] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A punching die, comprising an upper die and a lower die, wherein a cavity for placing a workpiece is provided between the upper die and the lower die, characterized in that: The lower die is provided with a lower punch and a die, the lower punch and the die are both arranged in the cavity, the lower punch is provided with a punching portion, the die is provided with a supporting portion and a first blanking hole, the punching portion is provided above the first blanking hole, and in the die opening direction, the punching portion is higher than the supporting portion, a channel extending along the first direction is formed between the punching portion and the supporting portion, and the channel is communicated with the cavity and the first blanking hole respectively; The upper die is provided with a driving rod. When the die is closed, the driving rod can pass through the cavity and extend into the lower die to drive the lower punch to move downward.

2. The punching die according to claim 1, wherein: The lower die includes a lower die plate and a movable plate assembly. The lower punch is movably connected to the lower die plate through a punch mounting seat, and the punch mounting seat is connected to the movable plate assembly. The driving rod passes through the lower die plate and abuts against the movable plate assembly to force the movable plate assembly to drive the punch mounting seat and the lower punch to move downward.

3. The punching die according to claim 2, wherein: The lower die further includes an elastic member, which abuts between the movable plate assembly and the punch mounting seat, so that the punch mounting seat and the lower punch have elastic potential energy to move upward.

4. The punching die according to claim 2, wherein: The movable plate assembly is provided with a first through hole; The lower mold further includes a bottom plate, which is arranged below the movable plate assembly. A second through hole is opened on the bottom plate, and the first blanking hole, the first through hole and the second through hole are connected to each other in an upper and lower direction.

5. The punching die according to claim 1, wherein: A first limit block and a second limit block are relatively arranged on the lower mold, and a passage extending along the first direction is formed between the first limit block and the second limit block. The passage is connected to the channel, and the first direction is perpendicular to the mold opening direction.

6. The punching die according to claim 1, wherein: The lower mold is provided with loading and unloading ends and stop ends on its opposite sides respectively. The loading and unloading ends are provided with supporting plates. The supporting plates are provided with guide blocks. The guide blocks extend along the first direction, and the first direction is perpendicular to the mold opening direction.

7. The punching die according to claim 6, characterized in that: The stop end is provided with an in-place detector and a stop block, the detection end of the in-place detector is arranged toward the loading and unloading end, and the stop block is arranged at one side of the detection end.

8. The punching die according to claim 7, characterized in that: The stop end is further provided with a first positioning block and a second positioning block, the first positioning block and the second positioning block are respectively arranged on both sides of the second direction of the detection end, and the second direction is respectively perpendicular to the mold opening direction and the first direction; In the first direction, the second positioning block is located at the rear side of the first positioning block, and a limiting groove extending along the first direction is formed on the second positioning block.

9. The punching die according to claim 1, wherein: The lower mold is provided with a first partition plate, which is arranged on the outside of the cavity and is used to abut against the upper mold.

10. The punching die according to claim 1, wherein: An upper punch is provided on the upper die; A second blanking hole is provided on the lower die, and the upper punch can pass through the cavity and extend into the second blanking hole.

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