High-precision inclined punching device

Abstract

The utility model relates to the technical field of part stamping, in particular to a high-precision inclined punching device which comprises a lower pressing block arranged on an upper die and a base arranged on a lower die, a sliding block is arranged on the base in an inclined sliding fit mode, a stamping knife is arranged on the sliding block, and a pushing-abutting inclined face allowing the lower pressing block to abut against is arranged on the sliding block. Two induction blocks are arranged on the sliding block in the direction opposite to the punching direction, proximity switches which are electrically connected to the control system and can detect the induction blocks are arranged on the base, and when the punching knife is located at the lowest position and the highest position, the proximity switches detect the induction blocks respectively. The punching device has the advantage that the punching depth precision is improved.

Description

Technical Field

[0001] The present application relates to the technical field of parts stamping, and in particular to a high-precision oblique punching device. Background Art

[0002] Punching is a common metal processing method, also known as stamping or blanking. It is to punch the metal sheet through a stamping die (die) to obtain a hole or contour of the desired shape and size.

[0003] At present, punching dies are usually used in conjunction with a press. The movable end of the press drives the upper die to rise and fall to achieve stamping, and the press is also powered by a motor.

[0004] However, there is an error between the actual speed and the rated speed of the motor. Therefore, when the error is fed back to the punching tool, the punching depth accuracy of the punching tool will be reduced, which is an obvious shortcoming. Utility Model Content

[0005] In order to improve the problem of poor punching depth accuracy, the present application provides a high-precision oblique punching device.

[0006] The high-precision oblique punching device provided in this application adopts the following technical solution:

[0007] A high-precision oblique punching device comprises a lower pressure block arranged on an upper die and a base arranged on a lower die, the base is provided with a slider for oblique sliding cooperation, a punching knife is arranged on the slider, a pushing inclined surface for the lower pressure block to abut against is arranged on the slider, two sensing blocks are arranged on the slider relative to the punching direction, a proximity switch electrically connected to a control system and capable of detecting the sensing blocks is arranged on the base, and when the punching knife is located at the lowest point and the highest point, the proximity switch detects one sensing block respectively.

[0008] By adopting the above technical solution, the upper die drives the lower pressing block to move downward, and the lower pressing block contacts the push inclined surface, so that the slider is forced to move obliquely downward, thereby driving the punch to move obliquely downward to achieve punching. When the punch is at the lowest point, the proximity switch just detects the corresponding sensing block and stops the upper die from continuing to move downward through the control system. After the upper die is reset upward, the slider is also reset obliquely upward, and when the proximity switch detects another sensing block, the slider is reset in place. The proximity switch detects the two sensing blocks, and then controls the length of each punching stroke, which is conducive to improving the accuracy of the punching depth.

[0009] Optionally, a return spring is provided between the side of the sliding block opposite to the punching direction and the base.

[0010] By adopting the above technical solution, when the slider drives the punch to achieve punching, the retraction spring is compressed. When the upper die is reset upward, the deformation force of the retraction spring pushes the slider to achieve automatic reset.

[0011] Optionally, a limit block is arranged on the base, and the limit block is located on the side of the slider facing away from the return spring.

[0012] By adopting the above technical solution, the limiting block limits the sliding block, thereby reducing the possibility of the sliding block sliding off the base.

[0013] Optionally, the punching tool includes a tool holder and a punch arranged on the tool holder, and the tool holder is detachably connected to the slider.

[0014] By adopting the above technical solution, workers can replace the punching knife so that it can be used for punching holes of different shapes and sizes.

[0015] Optionally, a plug-in slot is provided on the knife seat, and a pin is slidably penetrated through the slider and plug-fits with the plug-in slot.

[0016] By adopting the above technical solution, the plug-in slot and the plug-in pin are plugged together to achieve rapid disassembly and assembly of the knife seat and the slide block.

[0017] Optionally, one plug-in slot is arranged on opposite sides of the knife seat, two plug pins are commonly connected to the mounting plate, the distance between the two plug pins gradually decreases in the direction away from the mounting plate, and the plug pins are elastic.

[0018] By adopting the above technical solution, when the pin is inserted into the insertion slot, the pin presses against the side wall of the knife seat, and the deformation force of the pin can reduce the possibility of accidental separation from the insertion slot, thereby improving the firmness of the assembly between the knife seat and the slider.

[0019] Optionally, the sliding block is provided with a mounting groove which is plugged into the mounting plate, and a magnetic block which is magnetically attracted to the mounting plate is arranged in the mounting groove.

[0020] By adopting the above technical solution, the magnetic block and the installation slot are magnetically attracted to each other, further reducing the possibility of the pin accidentally detaching from the insertion slot.

[0021] Optionally, two mutually parallel support pins are arranged on both sides of the mounting plate facing away from the latch pins, a pull wire is slidably passed through the two support pins, and two ends of the pull wire are respectively tied to opposite sides of the two latch pins.

[0022] By adopting the above technical solution, during installation, the worker presses the pull wire between the two support pins until it contacts the mounting plate, thereby increasing the distance between the movable ends of the two pins, thereby facilitating the insertion of the movable ends of the pins into the plug-in slots.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The upper die drives the lower pressing block to move downward, and the lower pressing block contacts the push inclined surface, so that the slider is forced to move obliquely downward, and then drives the punch to move obliquely downward to achieve punching. When the punch is at the lowest point, the proximity switch just detects the corresponding sensor block and stops the upper die from moving downward through the control system. When the upper die is reset upward, the slider also resets obliquely upward. When the proximity switch detects another sensor block, the slider resets in place. The detection of the two sensor blocks by the proximity switch can control the length of each punching stroke, which is conducive to improving the accuracy of the punching depth.

[0025] 2. When the latch is inserted into the insertion slot, the latch presses against the side wall of the knife seat, and the deformation force of the latch can reduce the possibility of accidental separation from the insertion slot, thereby improving the firmness of the assembly between the knife seat and the slider;

[0026] 3. During installation, the worker presses the pull wire between the two support pins until it contacts the mounting plate, thereby increasing the distance between the movable ends of the two pins, making it easier to insert the movable ends of the pins into the sockets. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of the tool holder, punch and latch in the embodiment of the present application.

[0029] Explanation of the reference numerals: 1. base; 2. slider; 3. punch; 31. punch; 32. knife seat; 321. plug-in slot; 322. mounting slot; 4. push-against inclined plane; 5. induction block; 6. proximity switch; 8. limit block; 9. latch; 10. mounting plate; 11. magnetic block; 12. support pin; 13. pull wire. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] The embodiment of the present application discloses a high-precision oblique punching device.

[0032] Reference Figure 1 The high-precision oblique punching device includes a lower pressing block (not shown in the figure) bolted to the bottom of the upper die, a base 1 bolted to the top of the lower die, a slider 2 obliquely slidingly cooperated on the base 1, and a punch 3 arranged on the slider 2.

[0033] Reference Figure 1The slider 2 is provided with a push-in bevel 4 for the lower pressing block to abut against, the push-in bevel 4 is inclined downward, and two sensing blocks 5 are threadedly connected to the slider 2 relative to the punching direction, and there is a distance between the two sensing blocks 5.

[0034] A proximity switch 6 electrically connected to the control system is also threadedly connected to the base 1 . When the sensing block 5 is sufficiently close to the proximity switch 6 , the proximity switch 6 can detect the sensing block 5 .

[0035] Reference Figure 1 The upper die drives the lower pressing block to move downward, and the lower pressing block contacts the push inclined surface 4, so that the slider 2 is forced to move obliquely downward, and then drives the punching knife 3 to move obliquely downward to achieve punching.

[0036] When the punch 3 is at the lowest position, the proximity switch 6 just detects the relatively low position of the induction block 5, and the control system controls the upper die to stop moving. When the upper die is reset upward, the slide block 2 is also reset obliquely upward.

[0037] When the proximity switch 6 detects the relatively high sensor block 5, the slide block 2 is reset to its position. Thus, the distance of each punching stroke of the punching knife 3 is controlled by the detection of the two sensor blocks 5 by the proximity switch 6, which is conducive to improving the accuracy of the punching depth.

[0038] Reference Figure 1 A return spring (not shown in the figure) is supported between the slider 2 and the base 1 on the side opposite to the punching direction. When the slider 2 moves obliquely downward, the base 1 cooperates with the slider 2 to squeeze the return spring. When the upper die moves upward, the deformation force of the return spring pushes the slider 2 to slide obliquely upward to achieve reset.

[0039] Reference Figure 1 A limit block 8 is bolted to the base 1, and the limit block 8 is located on the side of the slider 2 facing away from the return spring. The limit block 8 limits the slider 2, reducing the possibility of the slider 2 accidentally sliding out of the base 1.

[0040] Reference Figure 1 The punching knife 3 includes a knife seat 32 and a punch 31 detachably connected to the knife seat 32. The knife seat 32 is detachably connected to the slider 2. Workers can replace the punching knife 3 as a whole, so that it can be suitable for punching holes of different sizes and shapes, thereby increasing the applicability of the punching device.

[0041] Reference Figure 2 The knife seat 32 has two opposite sides with plug-in slots 321, and the slider 2 is slidably provided with two latches 9, one latch 9 corresponds to one slot and is plugged in with it.

[0042] Reference Figure 2The two latches 9 are bonded together with a mounting plate 10 , the spacing between the two latches 9 gradually decreases in a direction away from the mounting plate 10 , and the latches 9 are made of elastic metal.

[0043] Reference Figure 2 The slider 2 is provided with an installation groove 322 which is plugged into the installation plate 10. A magnetic block 11 which is magnetically attracted to the installation plate 10 is embedded in the installation groove 322. The magnetic block 11 is magnetically attracted to the installation plate 10, thereby reducing the possibility of the pin 9 accidentally detaching from the insertion groove 321.

[0044] Reference Figure 2 Two parallel support pins 12 are integrally formed on both sides of the mounting plate 10 facing away from the latch pin 9 , and a pull wire 13 is slidably passed through the two support pins 12 , and the two ends of the pull wire 13 are respectively tied to the opposite sides of the two latch pins 9 .

[0045] Reference Figure 2 During installation, the worker presses the pull wire 13 between the two support pins 12 until it contacts the mounting plate 10 , thereby increasing the distance between the movable ends of the two latches 9 , making it easier to insert the movable ends of the latches 9 into the insertion slots 321 .

[0046] The latch 9 is inserted into the insertion groove 321 , which not only fits tightly against the side wall of the knife seat 32 , but also its own deformation force prevents it from accidentally leaving the insertion groove 321 , thereby improving the firmness of the assembly between the knife seat 32 and the slider 2 .

[0047] The implementation principle of a high-precision oblique punching device in an embodiment of the present application is as follows: the upper mold drives the lower pressure block to move downward, and the lower pressure block abuts against the push inclined surface 4, so that the slider 2 is forced to move obliquely downward and cooperates with the pair of return springs of the base 1 to achieve extrusion, and the slider 2 drives the punch 3 to move obliquely downward to achieve punching.

[0048] When the punch 3 is at the lowest position, the proximity switch 6 just detects the relatively low position of the induction block 5, and the control system controls the upper die to stop moving. When the upper die is reset upward, the slide block 2 is also reset obliquely upward under the action of the deformation force of the return spring.

[0049] When the proximity switch 6 detects the relatively high sensor block 5, the slide block 2 is reset to its position. Thus, the distance of each punching stroke of the punching knife 3 is controlled by the detection of the two sensor blocks 5 by the proximity switch 6, which is conducive to improving the accuracy of the punching depth.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any 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 high-precision oblique punching device, characterized in that: The invention comprises a lower pressing block arranged on an upper die and a base (1) arranged on a lower die, wherein a slider (2) is provided on the base (1) for oblique sliding cooperation, a punching knife (3) is provided on the slider (2), a pushing inclined surface (4) for the lower pressing block to abut against is provided on the slider (2), two sensing blocks (5) are provided on the slider (2) relative to the punching direction, a proximity switch (6) electrically connected to a control system and capable of detecting the sensing block (5) is provided on the base (1), and when the punching knife (3) is located at the lowest position and the highest position, the proximity switch (6) detects one sensing block (5) respectively.

2. The high-precision oblique punching device according to claim 1, characterized in that: A return spring is provided between the side of the slider (2) opposite to the punching direction and the base (1).

3. The high-precision oblique punching device according to claim 2, characterized in that: A limit block (8) is arranged on the base (1), and the limit block (8) is located on the side of the slider (2) facing away from the return spring.

4. The high-precision oblique punching device according to claim 1, characterized in that: The punching knife (3) comprises a knife seat (32) and a punch (31) arranged on the knife seat (32); the knife seat (32) is detachably connected to the slide block (2).

5. The high-precision oblique punching device according to claim 4, characterized in that: The knife seat (32) is provided with an inserting groove (321), and the slide block (2) is slidably provided with a plug pin (9) which is plugged and matched with the inserting groove (321).

6. The high-precision oblique punching device according to claim 5, characterized in that: The insertion slot (321) is arranged one on each of the two opposite sides of the knife seat (32), the two latches (9) are connected to the mounting plate (10), the spacing between the two latches (9) gradually decreases in the direction away from the mounting plate (10), and the latches (9) are elastic.

7. The high-precision oblique punching device according to claim 6, characterized in that: The sliding block (2) is provided with a mounting groove (322) for plugging and matching with the mounting plate (10), and a magnetic block (11) is arranged in the mounting groove (322) and is magnetically attracted to the mounting plate (10).

8. The high-precision oblique punching device according to claim 7, characterized in that: Two mutually parallel support pins (12) are arranged on both sides of the mounting plate (10) facing away from the latch pin (9), a pull wire (13) is slidably passed through the two support pins (12), and two ends of the pull wire (13) are respectively tied to opposite sides of the two latch pins (9).

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