Overload protection type intelligent die-cutting mold

Abstract

This utility model relates to the field of punching die technology and discloses an overload-protected intelligent punching die, including a housing and a PLC controller. An upper die is mounted on the housing, and the upper die includes a servo motor mounted on the top of the housing. A connecting sleeve is rotatably connected to the bottom of the servo motor, and an overload protection component is installed inside the connecting sleeve. The overload protection component includes a drive shaft rotatably connected to the servo motor, a limit sleeve mounted on the drive shaft, a sliding sleeve slidably connected to the bottom of the drive shaft, and a spring sleeved on the drive shaft, located between the limit sleeve and the sliding sleeve. A cavity A is opened at the end of the sliding sleeve, and an electric push rod is installed in cavity A. Four sets of assembly holes are arranged in a ring around cavity A at the end of the sliding sleeve, and a connecting shaft is inserted into each of the four sets of assembly holes. A drive sleeve is fixedly installed at the end of the connecting shaft. This utility model uses an overload protection component to separate the power transmission part of the die, stopping the punching action, effectively avoiding damage to the die and improving its service life.

Description

Technical Field

[0001] This utility model relates to the field of punching die technology, specifically to an overload-protected intelligent punching die. Background Technology

[0002] Punching dies are used in stamping processes to separate materials (metal or non-metal) along closed or open contours. They are widely used in industries such as automotive, electronics, and aerospace.

[0003] By working in conjunction with a punch press, the interaction between the punch and the cutting edge of the die causes the material to be sheared, broken, or separated, thereby obtaining parts of the desired shape and size.

[0004] Existing punching dies have the following drawbacks: Existing punching dies usually lack an effective protection mechanism when encountering overload, which can easily cause damage to the cutting edge of the die, reduce the fitting accuracy of the punch and die, and thus affect the service life of the die and the quality of the punched products. Utility Model Content

[0005] The purpose of this invention is to provide an overload-protected intelligent punching die to solve the problem of existing punching dies being easily damaged under overload conditions, thereby improving the service life of the die and the quality of the punched products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an overload-protected intelligent punching die, comprising a housing and a PLC controller. An upper die and a lower die are mounted on the housing, with the upper die located directly above the lower die. A punching die is provided inside the lower die. The upper die includes a servo motor mounted on the top of the housing. A connecting sleeve is rotatably connected to the bottom of the servo motor. An overload protection component is provided inside the connecting sleeve. A rotating shaft is rotatably connected to the bottom of the connecting sleeve. A mounting base is rotatably connected to the bottom of the rotating shaft. A punching punch is mounted on the bottom of the mounting base.

[0007] The overload protection device includes a drive shaft that is rotatably connected to a servo motor. A limit sleeve is installed on the drive shaft. A sliding sleeve is slidably connected to the bottom of the drive shaft. A spring is sleeved on the drive shaft and is located between the limit sleeve and the sliding sleeve. A cavity A is opened at the end of the sliding sleeve. An electric push rod is installed in the cavity A. Four sets of mounting holes are opened in a ring array around the end of the sliding sleeve around the cavity A. A connecting shaft is inserted into each of the four sets of mounting holes. A drive sleeve is fixedly installed at the end of the connecting shaft. The end of the drive sleeve is rotatably connected to the rotating shaft. The drive sleeve is threadedly connected to the housing.

[0008] Preferably, the drive sleeve has a cavity B, and a limit plate is threadedly connected inside the cavity B. The limit plate has a through hole through which an electric push rod passes. The bottom of the electric push rod is threadedly connected to a limit piece, and the limit piece is located inside the cavity B.

[0009] Preferably, a limiting groove is provided inside the sliding sleeve, and a protrusion adapted to the limiting groove is fixedly installed at the end of the drive shaft.

[0010] Preferably, the mounting base includes a mounting platform, a mounting sleeve is threadedly connected to the top of the mounting platform, a threaded groove is provided on the top of the mounting sleeve for the rotation of the rotating shaft, and a mounting ring is threadedly connected to the bottom of the rotating shaft.

[0011] Preferably, the punching punch has sliders symmetrically fixedly installed on its sidewalls, and the housing has grooves for the sliders to slide vertically.

[0012] Preferably, a groove is provided on the lower die, a pressure sensor is installed in the groove and the pressure sensor is located at the bottom of the punching die, and the pressure sensor is electrically connected to the PLC controller.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, by setting a pressure sensor and an overload protection mechanism, the pressure during the punching process can be monitored in real time, and protective measures can be taken in time when overload occurs. When the pressure is overloaded, the overload protection mechanism will separate the power transmission part of the mold and stop the punching action, effectively avoiding damage to the mold and improving the service life of the mold. At the same time, due to the improved stability of the mold, the quality of the punched products is also guaranteed, reducing the defect rate and improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the overload protection intelligent punching die proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the extended structure of the overload protection component of the overload protection intelligent punching die proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the drive sleeve extension structure of the overload protection intelligent punching die proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the sliding sleeve extension structure of the overload protection intelligent punching die proposed in this utility model.

[0019] In the diagram: 1. Housing; 11. PLC controller; 2. Lower die; 21. Punching die; 3. Upper die; 31. Servo motor; 32. Connecting sleeve; 33. Rotating shaft; 34. Mounting base; 341. Threaded groove; 342. Mounting sleeve; 343. Mounting platform; 344. Mounting ring; 35. Punching punch; 351. Slide groove; 352. Slider; 4. Overload protection component; 41. Drive shaft; 42. Limiting sleeve; 43. Spring; 44. Sliding sleeve; 45. Connecting shaft; 46. Assembly hole; 47. Cavity A; 471. Electric push rod; 48. Drive sleeve; 49. Limiting plate; 491. Through hole; 410. Limiting piece; 411. Cavity B; 412. Protrusion; 413. Limiting groove; 51. Pressure sensor; 52. Groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] For examples, please refer to Figure 1 - Figure 4 The overload protection intelligent punching die shown in the figure includes a housing 1 and a PLC controller 11. An upper die 3 and a lower die 2 are installed on the housing 1. The upper die 3 is located directly above the lower die 2. A punching die 21 is opened in the lower die 2. The upper die 3 includes a servo motor 31 installed on the top of the housing 1. A connecting sleeve 32 is rotatably connected to the bottom of the servo motor 31. An overload protection component 4 is provided in the connecting sleeve 32. A rotating shaft 33 is rotatably connected to the bottom of the connecting sleeve 32. A mounting base 34 is rotatably connected to the bottom of the rotating shaft 33. A punching punch 35 is installed at the bottom of the mounting base 34.

[0022] The overload protection component 4 includes a drive shaft 41 rotatably connected to the servo motor 31. A limit sleeve 42 is installed on the drive shaft 41. A sliding sleeve 44 is slidably connected to the bottom of the drive shaft 41. A spring 43 is sleeved on the drive shaft 41. The spring 43 is located between the limit sleeve 42 and the sliding sleeve 44. A cavity A47 is opened at the end of the sliding sleeve 44. An electric push rod 471 is installed in the cavity A47. Four sets of mounting holes 46 are arranged in a ring around the cavity A47 at the end of the sliding sleeve 44. A connecting shaft 45 is inserted into each of the four sets of mounting holes 46. A drive sleeve 48 is fixedly installed at the end of the connecting shaft 45. The end of the drive sleeve 48 is rotatably connected to the rotating shaft 33.

[0023] The drive sleeve 48 has a cavity B411, and a limit plate 49 is threadedly connected inside the cavity B411. The limit plate 49 has a through hole 491 through which an electric push rod 471 passes. The bottom of the electric push rod 471 is threadedly connected to a limit piece 410, and the limit piece 410 is located inside the cavity B411.

[0024] A limiting groove 413 is provided inside the sliding sleeve 44, and a protrusion 412 that matches the limiting groove 413 is fixedly installed at the end of the drive shaft 41.

[0025] Mounting base 34 includes mounting platform 343, mounting sleeve 342 is threadedly connected to the top of mounting platform 343, mounting sleeve 342 has a threaded groove 341 on the top for rotating shaft 33 to rotate, and mounting ring 344 is threadedly connected to the bottom of rotating shaft 33.

[0026] The punching punch 35 has sliders 352 fixedly installed symmetrically on its side wall, and the housing 1 has a groove 351 for the sliders 352 to slide vertically.

[0027] A groove 52 is provided on the lower die 2, and a pressure sensor 51 is installed in the groove 52. The pressure sensor 51 is located at the bottom of the punching die 21 and is electrically connected to the PLC controller 11.

[0028] Working principle:

[0029] When installing the overload protection intelligent punching die of this utility model, first install the upper die 3 and the lower die 2 in the corresponding positions of the housing 1, and ensure that the installation is firm. Then, connect the servo motor 31, pressure sensor 51, electric push rod 471 to the PLC controller 11, and debug them. Set the safe pressure threshold of the pressure sensor 51.

[0030] During use, the material is placed in the punching die 21 in the lower die 2. The servo motor 31 is driven by the PLC controller 11. The servo motor 31 drives the rotating shaft 33 to rotate through the connecting sleeve 32, so that the rotating shaft 33 rotates in the mounting base 34. The mounting base 34 pushes the punching punch 35. The punching punch 35 is driven by the force to drive the slider 352 and move the slider 352 vertically in the slide groove 351 to adjust the height of the punching punch 35. After the punching punch 35 enters the punching die 21, it punches the material. The pressure sensor 51 detects the transmitted pressure in real time.

[0031] When pressure sensor 51 detects that the pressure exceeds the threshold, it transmits an electrical signal to PLC controller 11. PLC controller 11 then controls electric push rod 471. Since drive sleeve 48 is threaded onto housing 1, electric push rod 471 generates a counterforce when pushing drive sleeve 48. Because protrusion 412 on drive shaft 41 is inserted into limit groove 413, sliding sleeve 44 moves vertically on drive shaft 41. When sliding sleeve 44 moves, it compresses spring 43, causing spring 43 to deform. 45 is pulled out from the assembly hole 46, and the sliding sleeve 44 is separated from the drive sleeve 48. However, at this time, the electric push rod 471 rotates in the through hole 491 and the limiting piece 410 at the end of the electric push rod 471 is still inserted in the cavity B411, so that the drive sleeve 48 stops rotating, thereby stopping the power of the rotating shaft 33 and stopping the punching punch 35 from moving downward. The overload protection part 4 will separate the power transmission part of the mold and stop the punching action, effectively avoiding damage to the mold and improving the service life of the mold.

[0032] After the equipment personnel complete the inspection and resolve the problem, the PLC controller 11 controls the servo motor 31 and the electric push rod 471. The servo motor 31 drives the drive shaft 41 to rotate. The PLC controller 11 controls the speed of the servo motor 31, causing the drive shaft 41 to rotate slowly. The PLC controller 11 controls the electric push rod 471, causing the sliding sleeve 44 to slowly approach the drive sleeve 48. The electric push rod 471 pulls the limit plate 49 through the limit plate 410. The limit plate 49 is under force, and the reaction force generated by the spring 43 pushes the sliding sleeve 44. The sliding sleeve 44 rotates slowly and moves towards the drive sleeve 48, so that the connecting shaft 45 is inserted into the assembly hole 46, thereby causing the drive sleeve 48 to drive the rotating shaft 33 and provide power.

[0033] Rotate the mounting sleeve 342, which rotates on the mounting table 343, thereby separating the mounting base 34 and the punching punch 35 from the rotating shaft 33 for disassembly and maintenance.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overload-protected intelligent punching die, comprising a housing (1) and a PLC controller (11), characterized in that: The upper mold (3) is installed on the housing (1). The upper mold (3) includes a servo motor (31) installed on the top of the housing (1). A connecting sleeve (32) is rotatably connected to the bottom of the servo motor (31). An overload protection component (4) is provided inside the connecting sleeve (32). A rotating shaft (33) is rotatably connected to the bottom of the connecting sleeve (32). The overload protection component (4) includes a drive shaft (41) rotatably connected to a servo motor (31). A limit sleeve (42) is installed on the drive shaft (41). A sliding sleeve (44) is slidably connected to the bottom of the drive shaft (41). A spring (43) is sleeved on the drive shaft (41). The spring (43) is located between the limit sleeve (42) and the sliding sleeve (44). A cavity A (47) is opened at the end of the sliding sleeve (44). An electric push rod (471) is installed in the cavity A (47). Four sets of mounting holes (46) are opened in a ring array around the cavity A (47) at the end of the sliding sleeve (44). A connecting shaft (45) is inserted into each of the four sets of mounting holes (46). A drive sleeve (48) is fixedly installed at the end of the connecting shaft (45). The end of the drive sleeve (48) is rotatably connected to the rotating shaft (33).

2. The overload protection intelligent punching die according to claim 1, characterized in that: The drive sleeve (48) has a cavity B (411) inside, and a limiting plate (49) is threadedly connected inside the cavity B (411). The limiting plate (49) has a through hole (491) through which an electric push rod (471) passes. The bottom of the electric push rod (471) is threadedly connected to a limiting piece (410) and the limiting piece (410) is located inside the cavity B (411).

3. The overload protection intelligent punching die according to claim 1, characterized in that: A limiting groove (413) is provided in the sliding sleeve (44), and a protrusion (412) adapted to the limiting groove (413) is fixedly installed at the end of the drive shaft (41).

4. The overload protection intelligent punching die according to claim 1, characterized in that: It also includes a mounting base (34), which includes a mounting platform (343). The top of the mounting platform (343) is threadedly connected to a mounting sleeve (342). The top of the mounting sleeve (342) is provided with a threaded groove (341) for the rotating shaft (33) to rotate. The bottom of the rotating shaft (33) is threadedly connected to a mounting ring (344).

5. The overload protection intelligent punching die according to claim 1, characterized in that: It also includes a punching punch (35), on which a slider (352) is symmetrically fixedly installed on the side wall of the punching punch (35), and a groove (351) is provided in the housing (1) for the slider (352) to slide vertically.

6. The overload protection intelligent punching die according to claim 1, characterized in that: It also includes a lower die (2), on which a groove (52) is provided, and a pressure sensor (51) is installed in the groove (52) and the pressure sensor (51) is located at the bottom of the punching die (21). The pressure sensor (51) is electrically connected to the PLC controller (11).

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