A kind of anti-flash edge guide structure of household appliance stamping die

Abstract

The utility model belongs to the technical field of home appliance production, specifically disclose a kind of flash prevention guiding structure of home appliance punch die.The utility model includes die body, lower die and punch head, the side of die body is equipped with punch plate, the top of die body is equipped with cylinder, the output end of cylinder is passed through the top of die body and is fixedly connected with the top of punch plate after, the both sides of die body are equipped with guide pillar and guide sleeve, the both sides of punch plate are equipped with guiding component, by the setting of replacement component, when guide pillar appears abrasion, without stopping machine dismounting die, only by control panel can trigger automatic replacement program, substantially shorten die maintenance time, improve production continuity, and by the setting cooperation high-precision stepper motor control of vertically distributed double guide pillar, ensure that new guide pillar and guide sleeve always keep accurate docking after replacement, effectively maintain blanking gap stability, reduce flash from root, prolong the service life of equipment.

Description

Technical Field

[0001] This application relates to the field of home appliance manufacturing technology, and more specifically, to an anti-flash guide structure for home appliance stamping dies. Background Technology

[0002] In the home appliance manufacturing industry, the processing quality of core components such as refrigerator door panels, washing machine shells, and air conditioner panels directly determines the appearance, assembly precision, and performance of home appliances. These parts are generally made of thin sheet metal (mostly 0.5-2mm thick), and key holes such as mounting holes, heat dissipation holes, and positioning holes on them all need to be formed through a punching process, which is highly dependent on stamping dies.

[0003] Currently, most household appliance punching dies on the market adopt a single guide post and guide sleeve guiding structure. Due to the wear and tear of the guide post and guide sleeve in the single guiding structure after long-term use, the positioning deviation of the upper and lower die cutting edges is caused, resulting in uneven force during material shearing and the generation of flash. Flash will directly damage the appearance integrity of household appliance parts. If exposed parts such as refrigerator door panels and air conditioner panels have flash, it will reduce the visual quality of the product and require additional grinding processes, which will increase production costs and reduce production efficiency. Utility Model Content

[0004] To address the aforementioned issues, this application provides an anti-flash guide structure for stamping dies used in household appliances.

[0005] The anti-flash guide structure for a household appliance stamping die provided in this application adopts the following technical solution:

[0006] An anti-flash guide structure for a stamping die for home appliances includes a die body, a lower die, and a stamping head. A stamping plate is provided on one side of the die body, and a cylinder is provided on the top of the die body. The output end of the cylinder passes through the top of the die body and is fixedly connected to the top of the stamping plate. Guide posts and guide sleeves are provided on both sides of the die body, and guide components are provided on both sides of the stamping plate. Each guide component includes a replacement unit and a detachable unit.

[0007] Each replacement unit includes two discs. Motors are installed on both sides of the stamping plate. Each motor drives the corresponding disc to rotate, thereby replacing the worn guide post.

[0008] Each detachable unit includes a first bolt and a second bolt, which are used to disassemble and replace the corresponding guide post and guide sleeve.

[0009] Furthermore, storage slots are provided on both sides of the stamping plate, and each motor is fixedly installed inside the corresponding storage slot. The output end of each motor is fixedly connected to a rotating shaft, and each rotating shaft is rotatably connected to the inner wall of the corresponding storage slot. Each disc is fixed to the outer wall of the corresponding rotating shaft.

[0010] Furthermore, each pair of guide pillars is set perpendicular to each other.

[0011] With the above technical solution, by setting up replacement components, when the guide column is worn, there is no need to stop the machine to disassemble the mold. The automatic replacement program can be triggered through the control panel, which greatly shortens the mold maintenance time and improves production continuity.

[0012] Furthermore, each disc has two fixed seats fixedly connected to its outer wall. Each fixed seat has an insertion hole on one side and a threaded hole on one side. Each guide post has a fixed rod fixedly connected to one side, and each rod is inserted into the corresponding insertion hole.

[0013] Furthermore, each insert rod has a threaded groove on one side, and the number of first bolts is set to multiple. Each guide post is fixedly connected to the fixing seat by the corresponding first bolt. Each first bolt is threaded through the corresponding threaded hole and then threadedly connected to the corresponding threaded groove.

[0014] Furthermore, each guide sleeve is fixedly connected to a base plate at its bottom, and each base plate has multiple second bolts on one side. Each base plate is fixedly connected to the mold body by multiple second bolts.

[0015] The above technical solution enables the individual disassembly and replacement of the guide pillar and guide sleeve, reducing mold maintenance costs.

[0016] Furthermore, the bottom of the stamping plate is provided with multiple auxiliary positioning pins, and the top of the lower die is provided with multiple positioning holes, with the multiple auxiliary positioning pins interlocking with the multiple positioning holes.

[0017] Furthermore, a control panel is provided on one side of the mold body.

[0018] The above technical solution can further improve the positioning of the stamping plate and the lower die.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] (1) By setting up replacement components, when the guide column is worn, there is no need to stop the machine to disassemble the mold. The automatic replacement program can be triggered through the control panel, which greatly shortens the mold maintenance time and improves the production continuity. In addition, by setting up vertically distributed double guide columns in conjunction with high-precision stepper motor control, it is ensured that the new guide column and the guide sleeve always maintain precise docking after replacement, effectively maintaining the stability of the punching gap, reducing the generation of flash from the source, and extending the service life of the equipment.

[0021] (2) This utility model realizes the individual disassembly and replacement of the guide column and the guide sleeve by setting the first bolt and the second bolt in the detachable unit. When only the guide column or the guide sleeve is worn on one side, it is not necessary to replace the entire guide assembly. Only the corresponding bolt needs to be disassembled to replace the worn part, which greatly reduces the consumption of spare parts and reduces the mold maintenance cost. Moreover, the core structure does not need to be disassembled during the disassembly process. The operator only needs to use a conventional wrench to complete the operation. The steps are simple and convenient, shortening the maintenance time of each operation, thereby improving the versatility and service life of the mold. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a bottom view of the overall structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the overall structure of the stamping plate of this utility model;

[0025] Figure 4 This is a schematic diagram of the overall structure of the disc of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall connection structure of the guide column of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Mold body; 2. Stamping plate; 3. Lower mold; 4. Stamping head; 5. Cylinder; 6. Guide post; 7. Guide sleeve; 8. Storage groove; 9. Motor; 10. Rotating shaft; 11. Disc; 12. Fixed base; 13. Insert rod; 14. First bolt; 15. Threaded groove; 16. Insertion hole; 17. Threaded hole; 18. Auxiliary positioning pin; 19. Positioning hole; 20. Base plate; 21. Second bolt; 22. Control panel. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] Reference Figures 1-5 An anti-flash guide structure for a stamping die for home appliances includes a die body 1, a lower die 3 and a stamping head 4. A stamping plate 2 is provided on one side of the die body 1, and a cylinder 5 is provided on the top of the die body 1. The output end of the cylinder 5 passes through the top of the die body 1 and is fixedly connected to the top of the stamping plate 2. Guide posts 6 and guide sleeves 7 are provided on both sides of the die body 1, and guide components are provided on both sides of the stamping plate 2. Each guide component includes a replacement unit and a detachable unit.

[0030] Each replacement unit includes a disc 11, and the number of discs 11 is set to two. Both sides of the stamping plate 2 are equipped with motors 9, and each motor 9 is used to drive the corresponding disc 11 to rotate, thereby replacing the worn guide post 6.

[0031] Each detachable unit includes a first bolt 14 and a second bolt 21, which are used to disassemble and replace the corresponding guide post 6 and guide sleeve 7.

[0032] Reference Figures 1-5 Both sides of the stamping plate 2 are provided with storage slots 8. Each motor 9 is fixedly installed inside the corresponding storage slot 8. The output end of each motor 9 is fixedly connected to a rotating shaft 10. Each rotating shaft 10 is rotatably connected to the inner wall of the corresponding storage slot 8. Each disc 11 is fixed to the outer wall of the corresponding rotating shaft 10. Every two guide posts 6 are arranged perpendicularly to each other. Two fixing seats 12 are fixedly connected to the outer wall of each disc 11. Each fixing seat 12 has an insertion hole 16 on one side and a threaded hole 17 on one side. Each guide post 6 has a fixed rod 13 on one side. The insertion rods 13 are respectively inserted into the corresponding insertion holes 16. Each insertion rod 13 has a threaded groove 15 on one side. The number of first bolts 14 is set to multiple. Each guide post 6 is fixedly connected to the fixed seat 12 by the corresponding first bolt 14. Each first bolt 14 is threaded through the corresponding threaded hole 17 and then threadedly connected to the corresponding threaded groove 15. Each guide sleeve 7 is fixedly connected to the bottom of the base 20. Each base 20 has multiple second bolts 21 on one side. Each base 20 is fixedly connected to the mold body 1 by multiple second bolts 21. The mold body 1 has a control panel 22 on one side.

[0033] Each guide post 6 has a displacement sensor embedded in its inner wall, with its detection end facing the outer wall of the guide post 6. The gap is monitored by measuring the change in distance between the two in real time. When the distance exceeds the set value, a wear alarm is triggered (the displacement sensor is existing technology, model D5SN-S01, not shown in the figure).

[0034] The replacement unit allows for the replacement of a new spare guide post 6 when one of the guide posts 6 becomes worn. Specifically, when the gap between the guide post 6 and the guide sleeve 7 exceeds a preset threshold due to wear, the displacement sensor embedded in the inner wall of the guide post 6 transmits a detection signal to the control panel 22, triggering a wear alarm and automatically starting the replacement program. At this time, the control panel 22 sends a pulse command to the motor 9 (a high-precision stepper motor 9) in the corresponding storage slot 8. The output of the motor 9 drives the rotating shaft 10 to rotate the disk 11. The rotation angle is precisely controlled by the preset number of pulses (each step corresponds to a fixed angle, and the total number of pulses strictly matches the 90-degree rotation requirement), so that the spare guide posts 6, which are vertically distributed on the disk 11, rotate 90 degrees synchronously with the disk 11 and move to the working position of the original worn guide post 6. The worn guide post 6 then moves into the storage slot 8 to complete its repositioning. The entire process achieves precise angle control through the pulse drive of the stepper motor 9 and the vertical layout design, ensuring that the new guide post 6 and the guide sleeve 7 are precisely aligned.

[0035] By setting up a replacement unit, when the guide post 6 wears out, there is no need to stop the machine and disassemble the mold. The automatic replacement program can be triggered simply by controlling the control panel 22. The stepper motor 9 drives the disc 11 to rotate 90 degrees precisely to achieve rapid switching of the spare guide post 6. The whole process does not require manual intervention, which greatly shortens the mold maintenance time and improves production continuity. Moreover, the vertically distributed double guide post 6 setting, combined with the high-precision stepper motor 9 control, ensures that the new guide post 6 and the guide sleeve 7 always maintain precise docking after replacement, effectively maintaining the stability of the punching gap, reducing flash generation from the root, and extending the service life of the equipment.

[0036] The detachable unit facilitates the individual disassembly and replacement of worn guide posts 6 and guide sleeves 7. Specifically, when it is necessary to disassemble and replace worn guide posts 6 or guide sleeves 7 individually, for guide posts 6, the operator first locates the first bolt 14 connecting the fixing seat 12 and the guide post 6 insert rod 13. Using a suitable wrench, the operator unscrews the first bolt 14 from the threaded hole 17 and threaded groove 15, releasing the bolt's fixation on the insert rod 13. Then, the operator holds the worn guide post 6 and applies force outwards, causing the insert rod 13 to be pulled out of the fixing seat 12's insertion hole 16, thus completing the disassembly of guide post 6. When replacing a new guide post 6, simply align the insert rod 13 of the new guide post 6 with the insertion hole 16, insert it, and then pass the first bolt 14 through the threaded hole 17 and screw it into the threaded groove 15, tightening it to secure the new guide post 6.

[0037] For the guide sleeve 7, the operator uses a wrench to unscrew the multiple second bolts 21 connecting the base 20 to the mold body 1. After all the second bolts 21 are completely removed, the worn guide sleeve 7 is lifted upwards, and it can be removed from the mold body 1 along with the base 20. When replacing the new guide sleeve 7, the base 20 of the new guide sleeve 7 is aligned with the corresponding installation position of the mold body 1, and then the second bolts 21 are passed through the base 20 and screwed into the preset screw holes of the mold body 1 and tightened one by one to complete the replacement of the guide sleeve 7.

[0038] The detachable connection between the first bolt 14 and the second bolt 21 in the detachable unit enables the individual disassembly and replacement of the guide post 6 and the guide sleeve 7. When only one side of the guide post 6 or the guide sleeve 7 is worn, it is not necessary to replace the entire guide assembly. Only the corresponding bolt needs to be disassembled to replace the worn part, which greatly reduces the consumption of spare parts and lowers the mold maintenance cost. Moreover, the disassembly process does not require disassembling the core structure such as the mold body 1 and the cylinder 5. Operators only need to use a conventional wrench to complete the operation. The steps are simple and convenient, shortening the maintenance time per operation, thereby improving the versatility and service life of the mold.

[0039] Reference Figures 1-3 The bottom of the stamping plate 2 is provided with multiple auxiliary positioning pins 18, and the top of the lower mold 3 is provided with multiple positioning holes 19. The multiple auxiliary positioning pins 18 are inserted into the multiple positioning holes 19.

[0040] By engaging the auxiliary positioning pin 18 with the positioning hole 19, the stamping plate 2 and the lower die 3 can be further positioned, further preventing the stamping plate 2 from shifting laterally, and ensuring that the stamping head 4 and the punching edge are precisely aligned to reduce flash.

[0041] Working principle: When the gap between the guide post 6 and the guide sleeve 7 exceeds the preset threshold due to wear, the displacement sensor embedded in the inner wall of the guide post 6 will transmit the detection signal to the control panel 22, triggering a wear alarm and automatically starting the replacement program. At this time, the control panel 22 sends a pulse command to the motor 9 (the motor 9 is a high-precision stepper motor 9) in the corresponding side storage slot 8. The output end of the motor 9 drives the rotating shaft 10 to rotate the disk 11. The rotation angle is precisely controlled by the preset number of pulses (each step corresponds to a fixed angle, and the total number of pulses strictly matches the 90-degree rotation requirement), so that the spare guide post 6, which is vertically distributed on the disk 11, rotates 90 degrees synchronously with the disk 11 and moves to the working position of the original worn guide post 6. The worn guide post 6 then moves into the storage slot 8 to complete the retraction. The whole process achieves precise angle control through the pulse drive of the stepper motor 9 and the vertical layout design, ensuring that the new guide post 6 and the guide sleeve 7 are precisely connected.

[0042] When it is necessary to disassemble and replace the worn guide post 6 or guide sleeve 7 separately, for the guide post 6, the operator first locates the first bolt 14 connecting the fixing seat 12 and the guide post 6 insert rod 13, and uses an appropriate wrench to unscrew the first bolt 14 from the threaded hole 17 and threaded groove 15, releasing the bolt from fixing the insert rod 13. Then, the operator holds the worn guide post 6 and applies force outward to pull the insert rod 13 out of the insertion hole 16 of the fixing seat 12, thus completing the disassembly of the guide post 6. When replacing the new guide post 6, simply align the insert rod 13 of the new guide post 6 with the insertion hole 16 and insert it, then pass the first bolt 14 through the threaded hole 17 and screw it into the threaded groove 15 and tighten it to fix the new guide post 6.

[0043] For the guide sleeve 7, the operator uses a wrench to unscrew the multiple second bolts 21 connecting the base 20 to the mold body 1. After all the second bolts 21 are completely removed, the worn guide sleeve 7 is lifted upwards, and it can be removed from the mold body 1 along with the base 20. When replacing the new guide sleeve 7, the base 20 of the new guide sleeve 7 is aligned with the corresponding installation position of the mold body 1, and then the second bolts 21 are passed through the base 20 and screwed into the preset screw holes of the mold body 1 and tightened one by one to complete the replacement of the guide sleeve 7.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A guide structure for preventing flash in a stamping die for household appliances, comprising a die body (1), a lower die (3), and a stamping head (4), characterized in that, The mold body (1) has a stamping plate (2) on one side and a cylinder (5) on the top of the mold body (1). The output end of the cylinder (5) passes through the top of the mold body (1) and is fixedly connected to the top of the stamping plate (2). The mold body (1) has guide posts (6) and guide sleeves (7) on both sides. The stamping plate (2) has guide components on both sides. Each guide component includes a replacement unit and a detachable unit. Each replacement unit includes a disc (11), and the number of discs (11) is set to two. Both sides of the stamping plate (2) are provided with motors (9), and each motor (9) is used to drive the corresponding disc (11) to rotate, thereby replacing the worn guide post (6). Each of the detachable units includes a first bolt (14) and a second bolt (21), which are used to disassemble and replace the corresponding guide post (6) and guide sleeve (7).

2. The anti-flash guide structure for a household appliance stamping die according to claim 1, characterized in that: The stamping plate (2) has storage slots (8) on both sides. Each motor (9) is fixedly installed inside the corresponding storage slot (8). The output end of each motor (9) is fixedly connected to a rotating shaft (10). Each rotating shaft (10) is rotatably connected to the inner wall of the corresponding storage slot (8). Each disc (11) is fixed to the outer wall of the corresponding rotating shaft (10).

3. The anti-flash guide structure for a household appliance stamping die according to claim 1, characterized in that: Each pair of guide posts (6) is arranged perpendicular to each other.

4. The anti-flash guide structure for a household appliance stamping die according to claim 1, characterized in that: Two fixing seats (12) are fixedly connected to the outer wall of each of the discs (11). Each fixing seat (12) has a hole (16) on one side and a threaded hole (17) on one side. Each guide post (6) has a rod (13) fixedly connected to one side. Each rod (13) is inserted into the corresponding hole (16).

5. The anti-flash guide structure for a household appliance stamping die according to claim 4, characterized in that: Each of the insert rods (13) has a threaded groove (15) on one side. The number of the first bolts (14) is set to multiple. Each guide post (6) is fixedly connected to the fixing seat (12) by the corresponding first bolt (14). Each first bolt (14) is threaded through the corresponding threaded hole (17) and then threadedly connected to the corresponding threaded groove (15).

6. The anti-flash guide structure for a household appliance stamping die according to claim 1, characterized in that: Each guide sleeve (7) is fixedly connected to a base plate (20) at its bottom. Each base plate (20) has multiple second bolts (21) on one side. Each base plate (20) is fixedly connected to the mold body (1) by multiple second bolts (21).

7. The anti-flash guide structure for a household appliance stamping die according to claim 1, characterized in that: The bottom of the stamping plate (2) is provided with multiple auxiliary positioning pins (18), and the top of the lower mold (3) is provided with multiple positioning holes (19). The multiple auxiliary positioning pins (18) are inserted into the multiple positioning holes (19).

8. The anti-flash guide structure for a household appliance stamping die according to claim 1, characterized in that: A control panel (22) is provided on one side of the mold body (1).

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