Punching equipment

Abstract

The utility model relates to the technical field of hole making equipment, and particularly discloses punching equipment which comprises a supporting frame, a lower die and a punching assembly, the lower die is arranged on the supporting frame, and a cutting hole is formed in the lower die in the vertical direction; the punching assembly comprises a guide sleeve, a male die, a cam and a driving part, the guide sleeve is arranged on the supporting frame and is spaced from the lower die in the vertical direction and is relatively fixed to the lower die, the guide sleeve is provided with a sliding hole coaxial with the cutting hole, the male die penetrates through the sliding hole and is in sliding fit with the guide sleeve, the cam is pivoted to the guide sleeve or the supporting frame, and a pivoting shaft of the cam is axially located on the horizontal plane. The peripheral wall of the cam abuts against the end, away from the lower die, of the male die, and the driving piece is configured to drive the cam to rotate. The punching equipment is easy to operate and high in machining efficiency, high skill requirements are not needed, and meanwhile, the problems of tearing and galling on a part to be punched can be avoided through punching of the male die.

Description

Technical Field

[0001] The utility model relates to the technical field of hole-making equipment, in particular to punching equipment. Background Art

[0002] Due to the high insulation requirements of power equipment, most main equipment is oil-immersed, typically leaving a sufficient oil gap between the internal body and the metal casing. To prevent impurities in the insulating oil from forming "bridges" and causing breakdown after the equipment is put into operation, while also ensuring that the equipment's temperature rise remains within the specified range, a large amount of electrical cardboard is used.

[0003] During production, electrical cardboard needs to be perforated according to design requirements. Conventional drilling methods are inefficient and can cause significant burrs and tensile deformation, requiring high benchwork skills from the operator.

[0004] Therefore, punching equipment is in urgent need to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a punching device to solve the problem in the related art that holes are made in electrical cardboard by drilling, which will result in a large number of burrs and tensile deformations and requires high benchwork skills of the operator.

[0006] The utility model provides a punching device, which includes:

[0007] Support frame;

[0008] A lower die, the lower die being arranged on the support frame, and the lower die being provided with a cutting hole along a vertical direction;

[0009] The punching assembly includes a guide sleeve, a punch, a cam and a driving member. The guide sleeve is arranged on the support frame, and the guide sleeve is spaced from the lower die along the vertical direction and relatively fixed. The guide sleeve is provided with a sliding hole coaxial with the cutting hole. The punch is passed through the sliding hole and slides with the guide sleeve. The cam is pivoted to the guide sleeve or the support frame, the pivot axis of the cam is axially located in a horizontal plane, and the peripheral wall of the cam abuts against the end of the punch away from the lower die, and the driving member is configured to drive the cam to rotate.

[0010] As a preferred technical solution of the punching device, the outer peripheral wall of the cam includes a plane peripheral wall and an arc peripheral wall, and the plane peripheral wall and the arc peripheral wall are connected end to end to form the outer peripheral wall of the cam;

[0011] The punch includes an upper stop position and a lower stop position along the vertical direction, the planar circumferential wall of the cam is perpendicular to the axis of the punch, and the planar circumferential wall abuts against the punch so that the punch is located at the upper stop position, and the arc circumferential wall of the cam abuts against the punch so that the punch is located at the lower stop position.

[0012] As an optimal technical solution for the punching equipment, a first limiting convex ring is protruded from the inner wall of the sliding hole, and the first limiting convex ring and the cam are spaced apart along the vertical direction. A second limiting convex ring is protruded from the end of the punch away from the lower mold, and the second limiting convex ring is located between the first limiting convex ring and the cam, and the outer diameter of the second limiting convex ring is larger than the inner diameter of the first limiting convex ring.

[0013] As a preferred technical solution for the punching equipment, the first limiting convex ring is loosely matched with the outer peripheral wall of the punch.

[0014] As a preferred technical solution of the punching equipment, the second limiting protrusion is clearance-matched with the inner wall of the sliding hole.

[0015] As a preferred technical solution of the punching equipment, the punching assembly further includes an elastic member, one end of the elastic member abuts against the first limiting convex ring, and the other end of the elastic member abuts against the second limiting convex ring.

[0016] As a preferred technical solution for the punching equipment, a support ear is protruded from one end of the guide sleeve away from the lower die, and the pivot shaft passes through the support ear.

[0017] As a preferred technical solution of the punching device, the driving member is a driving rod, and one end of the driving rod is fixedly connected to the peripheral wall of the cam.

[0018] As a preferred technical solution for the punching equipment, the support frame includes a support plate and a frame body, the lower die is arranged on the support plate, and the frame body is fixed on the support plate and is used to be fixedly connected to the guide sleeve.

[0019] As a preferred technical solution of the punching device, the guide sleeve is provided with a plurality of threaded holes at intervals along the vertical direction, and the frame is provided with a plurality of through holes, and the plurality of through holes correspond to the plurality of threaded holes one by one;

[0020] The support frame further includes a plurality of bolts, which pass through the plurality of through holes in a one-to-one correspondence and are screwed into the corresponding threaded holes.

[0021] The beneficial effects of the utility model are:

[0022] The utility model provides a punching device, which includes a support frame, a lower die and a punching assembly. The lower die is arranged on the support frame and is provided with a cutting hole in the vertical direction; the punching assembly includes a guide sleeve, a punch, a cam and a driving member. The guide sleeve is arranged on the support frame and is spaced from the lower die in the vertical direction and relatively fixed. The guide sleeve is provided with a sliding hole coaxial with the cutting hole. The punch is passed through the sliding hole and slides with the guide sleeve. The cam is pivotally connected to the guide sleeve or the support frame. The pivot axis of the cam is axially located in a horizontal plane, and the peripheral wall of the cam abuts against an end of the punch away from the lower die. The driving member is configured to drive the cam to rotate. When using the punching device to punch holes, the workpiece to be punched is placed on the lower die, and the pre-punching position of the workpiece to be punched is opposite to the cutting hole. Then, the driving member drives the cam to rotate. Since the peripheral wall of the cam abuts against the end of the punch away from the lower die, the cam can drive the punch to slide relative to the guide sleeve in the vertical direction. The punch and the wall of the cutting hole of the lower die form a shear surface, so that the punch passes through the pre-punching position of the workpiece to be punched and extends into the cutting hole, thereby punching the workpiece to be punched. The punching device is simple to operate, has high processing efficiency, does not require high skills, and at the same time, the punching of the punch can avoid the problem of tearing and burring on the workpiece to be punched. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure diagram of the punching device in the embodiment of the utility model is as follows Figure 1 ;

[0024] Figure 2 The structure diagram of the punching device in the embodiment of the utility model is as follows Figure 2 ;

[0025] Figure 3 This is a structural diagram of the punching equipment in the embodiment of the present utility model (excluding the workbench);

[0026] Figure 4 This is a structural diagram of the punching equipment in the embodiment of the utility model (excluding the workbench);

[0027] Figure 5 This is a cross-sectional view of the punching assembly in the embodiment of the present utility model;

[0028] Figure 6 for Figure 5 A partial enlarged view of point A in the middle;

[0029] Figure 7 This is a schematic structural diagram of a cam and a driving member in an embodiment of the present utility model;

[0030] Figure 8 It is a cross-sectional view of the guide sleeve and the support frame in the embodiment of the present utility model.

[0031] In the picture:

[0032] Y, vertical direction;

[0033] 1. Support frame; 11. Support plate; 111. Leakage hole; 12. Frame; 121. Through hole; 13. Bolt;

[0034] 2. Lower die; 21. Cutting hole;

[0035] 3. Punching assembly; 31. Guide sleeve; 311. Sliding hole; 312. First limiting protrusion; 313. Support ear; 314. Threaded hole; 32. Punch; 321. Second limiting protrusion; 33. Cam; 331. Pivot shaft; 332. Planar peripheral wall; 333. Arc peripheral wall; 34. Driving member; 35. Elastic member;

[0036] 4. Workbench. DETAILED DESCRIPTION

[0037] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] like Figures 1 to 8 As shown, this embodiment provides a punching device, which includes a support frame 1, a lower die 2 and a punching assembly 3. The lower die 2 is arranged on the support frame 1, and the lower die 2 is provided with a cutting hole 21 along the vertical direction Y; the punching assembly 3 includes a guide sleeve 31, a punch 32, a cam 33 and a driving member 34. The guide sleeve 31 is arranged on the support frame 1 and is spaced from the lower die 2 along the vertical direction Y and relatively fixed. The guide sleeve 31 is provided with a sliding hole 311 coaxial with the cutting hole 21, the punch 32 is passed through the sliding hole 311 and slides with the guide sleeve 31, the cam 33 is pivoted to the guide sleeve 31 or the support frame 1, the pivot shaft 331 of the cam 33 is axially located in the horizontal plane, and the peripheral wall of the cam 33 abuts against the end of the punch 32 away from the lower die 2, and the driving member 34 is configured to drive the cam 33 to rotate. When using the punching device to punch holes, the workpiece to be punched is placed on the lower die 2, and the pre-punching position of the workpiece to be punched is opposite to the cutting hole 21. Then, the driving member 34 drives the cam 33 to rotate. Since the peripheral wall of the cam 33 abuts against the end of the punch 32 away from the lower die 2, the cam 33 can drive the punch 32 to slide relative to the guide sleeve 31 along the vertical direction Y. The punch 32 forms a shear surface with the hole wall of the cutting hole 21 of the lower die 2, so that the punch 32 passes through the pre-punching position of the workpiece to be punched and extends into the cutting hole 21, thereby punching the workpiece to be punched. The punching device is simple to operate, has high processing efficiency, does not require high skills, and at the same time, the punching of the punch 32 can avoid the problem of tearing and burring on the workpiece to be punched.

[0042] Specifically, the purpose of setting the guide sleeve 31 apart from the lower die 2 along the vertical direction Y is to space the guide sleeve 31 apart from the lower die 2 along the vertical direction Y by a certain distance, which is greater than the thickness of the workpiece to be punched.

[0043] like Figure 7As shown, optionally, the outer peripheral wall of the cam 33 includes a plane peripheral wall 332 and an arc peripheral wall 333, and the plane peripheral wall 332 and the arc peripheral wall 333 are connected end to end to form the outer peripheral wall of the cam 33; the punch 32 includes an upper stop position and a lower stop position along the vertical direction Y, the plane peripheral wall 332 of the cam 33 is perpendicular to the axis of the punch 32, and the plane peripheral wall 332 abuts against the punch 32 so that the punch 32 is located at the upper stop position, and the arc peripheral wall 333 of the cam 33 abuts against the punch 32 so that the punch 32 is located at the lower stop position. In this embodiment, in the initial state, the punch 32 is located at the upper stop position. At this time, the planar circumferential wall 332 of the cam 33 is perpendicular to the axis of the punch 32 and abuts against the punch 32. When the driving member 34 drives the cam 33 to rotate, the planar circumferential wall 332 and the end of the punch 32 away from the lower die 2 slide relative to each other, thereby driving the punch 32 to move downward, so that the punch 32 passes through the pre-punching position of the part to be punched and extends into the cutting hole 21, until the arc circumferential wall 333 abuts against the end of the punch 32 away from the lower die 2. At this time, the punch 32 is located at the lower stop position.

[0044] like Figure 6 As shown, optionally, a first retaining ring 312 is provided on the inner wall of the sliding hole 311. The first retaining ring 312 and the cam 33 are spaced apart in the vertical direction Y. A second retaining ring 321 is provided on the end of the punch 32 away from the lower die 2. The second retaining ring 321 is positioned between the first retaining ring 312 and the cam 33, and the outer diameter of the second retaining ring 321 is greater than the inner diameter of the first retaining ring 312. In this embodiment, this arrangement allows the punch 32 to slide within the sliding hole 311 while preventing it from falling out of the sliding hole 311. Specifically, the distance between the first retaining ring 312 and the cam 33 in the vertical direction Y is greater than the distance between the punch 32 and the lower stop from the upper stop.

[0045] Optionally, the first limiting protrusion 312 has a clearance fit with the outer peripheral wall of the punch 32. In this embodiment, during the axial sliding of the punch 32 along the slide hole 311, this arrangement can promote the coincidence of the axis of the punch 32 with the axis of the slide hole 311, thereby preventing the axial direction of the punch 32 from intersecting the axis of the slide hole 311. Preferably, the width of the first limiting protrusion 312 extends along the axis of the slide hole 311 to the end of the guide sleeve 31 close to the lower die 2. This arrangement can further promote the coincidence of the axis of the punch 32 with the axis of the slide hole 311, thereby preventing the punch 32 and the guide sleeve 31 from getting stuck. The term "clearance fit" used in this embodiment means that the spacing between the first limiting protrusion 312 and the outer peripheral wall of the punch 32 is very small, for example, the spacing ranges from 0.5 mm to 3 mm.

[0046] Optionally, the second limiting protrusion 321 has a clearance fit with the inner wall of the sliding hole 311. In this embodiment, as the punch 32 slides axially along the sliding hole 311, this arrangement allows the axis of the punch 32 to coincide with the axis of the sliding hole 311, thereby preventing the axial direction of the punch 32 from intersecting the axis of the sliding hole 311 and, consequently, preventing jamming between the punch 32 and the guide sleeve 31. The term "clearance fit" used in this embodiment means that the gap between the second limiting protrusion 321 and the inner wall of the sliding hole 311 is very small, for example, ranging from 0.5 mm to 3 mm.

[0047] Optionally, the punch assembly 3 further includes an elastic member 35, which is disposed between the first stop ring 312 and the second stop ring 321 and abuts against the first stop ring 312 and the second stop ring 321, respectively. In this embodiment, the elastic member 35 is always in a compressed state, which enables the punch 32 to automatically reset. When the contact position between the cam 33 and the punch 32 moves from the arc-shaped circumferential wall 333 to the planar circumferential wall 332, the elastic member 35 drives the punch 32 toward the sliding hole 311.

[0048] Optionally, a support ear 313 is provided on the end of the guide sleeve 31 away from the lower mold 2, and the pivot shaft 331 is passed through the support ear 313. In this embodiment, two support ears 313 are provided, and the two support ears 313 are spaced apart in the horizontal direction. The cam 33 is disposed between the two support ears 313, and the ends of the pivot shaft 331 are respectively passed through the two support ears 313.

[0049] Optionally, after both ends of the pivot shaft 331 pass through the two supporting ears 313 respectively, both ends of the pivot shaft 331 are screwed to two nuts respectively. This arrangement can prevent the pivot shaft 331 from escaping from the two supporting ears 313.

[0050] Specifically, the guide sleeve 31 and the support ear 313 are an integrally formed part.

[0051] Optionally, the driving member 34 is a driving rod, one end of which is fixedly connected to the peripheral wall of the cam 33. In this embodiment, a worker operates the other end of the driving rod to drive the cam 33. Specifically, the axis of the driving rod is perpendicular to the axis of the pivot shaft 331. In other embodiments, the driving member 34 may also be a servo motor, the output shaft of which is fixedly connected coaxially with the pivot shaft 331.

[0052] Optionally, a handle sleeve is provided on one end of the driving rod away from the cam 33 .

[0053] Optionally, the support frame 1 includes a support plate 11 and a frame body 12, the lower mold 2 is disposed on the support plate 11, and the frame body 12 is fixed to the support plate 11 and is used to be fixedly connected to the guide sleeve 31. In this embodiment, the frame body 12 has an L-shaped structure, and one end of the frame body 12 is fixed to the support plate 11, so that the other end of the frame body 12 is spaced apart from the support plate 11 along the vertical direction Y. The guide sleeve 31 is then disposed on the other end of the frame body 12 to achieve a spaced arrangement between the guide sleeve 31 and the lower mold 2 on the support plate 11.

[0054] Optionally, the support plate 11 is provided with a material leakage hole 111, and the cutting hole 21 is arranged opposite to the material leakage hole 111. In this embodiment, when the punch 32 punches the workpiece to be punched, the punch 32 carries the waste material cut from the workpiece to be punched into the cutting hole 21. Under the action of gravity, the waste material enters the material leakage hole 111 from the cutting hole 21 and finally leaks out from the material leakage hole 111.

[0055] Optionally, the punching equipment also includes a workbench 4, and the support plate 11 is fixed on the workbench 4. On the one hand, this setting can make the leakage hole 111 set at a distance from the ground, and then place a waste barrel between the leakage hole 111 and the ground. The waste automatically leaks from the leakage hole 111 into the waste barrel, thereby reducing the work intensity of the staff. On the other hand, the workbench 4 makes the support frame 1 a certain height from the ground. This setting facilitates the staff to operate the punching equipment.

[0056] like Figure 8 As shown, optionally, the guide sleeve 31 is provided with a plurality of threaded holes 314 spaced apart along the vertical direction Y, and the frame body 12 is provided with a plurality of through holes 121, with the plurality of through holes 121 corresponding one-to-one with the plurality of threaded holes 314. The support frame 1 further includes a plurality of bolts 13, which pass through the plurality of through holes 121 and are threadedly engaged with the corresponding threaded holes 314. In this embodiment, compared to fixing with only a single bolt 13, the above arrangement can improve the stability of the relative fixation between the guide sleeve 31 and the frame body 12.

[0057] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Punching equipment, characterized in that, include: Support frame (1); A lower die (2), the lower die (2) being arranged on the support frame (1), and the lower die (2) being provided with a cutting hole (21) along a vertical direction (Y); A punching assembly (3) comprises a guide sleeve (31), a punch (32), a cam (33) and a driving member (34), wherein the guide sleeve (31) is arranged on the support frame (1), and the guide sleeve (31) is spaced apart from the lower die (2) along the vertical direction (Y) and relatively fixedly arranged, the guide sleeve (31) is provided with a sliding hole (311) coaxial with the cutting hole (21), the punch (32) is passed through the sliding hole (311) and slides with the guide sleeve (31), the cam (33) is pivotally connected to the guide sleeve (31) or the support frame (1), the pivot shaft (331) of the cam (33) is axially located in a horizontal plane, and the peripheral wall of the cam (33) abuts against one end of the punch (32) away from the lower die (2), and the driving member (34) is configured to drive the cam (33) to rotate.

2. The punching device according to claim 1, characterized in that The outer peripheral wall of the cam (33) includes a plane peripheral wall (332) and an arc peripheral wall (333), and the plane peripheral wall (332) and the arc peripheral wall (333) are connected end to end to form the outer peripheral wall of the cam (33); The punch (32) includes an upper stop position and a lower stop position along the vertical direction (Y); the plane circumferential wall (332) of the cam (33) is perpendicular to the axis of the punch (32), and the plane circumferential wall (332) abuts against the punch (32) so that the punch (32) is located at the upper stop position; the arc circumferential wall (333) of the cam (33) abuts against the punch (32) so that the punch (32) is located at the lower stop position.

3. The punching device according to claim 1, characterized in that A first limiting convex ring (312) is convexly provided on the inner wall of the sliding hole (311), and the first limiting convex ring (312) and the cam (33) are spaced apart along the vertical direction (Y). A second limiting convex ring (321) is provided at one end of the punch (32) away from the lower die (2), and the second limiting convex ring (321) is located between the first limiting convex ring (312) and the cam (33), and the outer diameter of the second limiting convex ring (321) is greater than the inner diameter of the first limiting convex ring (312).

4. The punching device according to claim 3, characterized in that The first limiting protruding ring (312) is loosely fitted with the outer peripheral wall of the punch (32).

5. The punching device according to claim 4, characterized in that The second limiting protruding ring (321) is loosely fitted with the inner wall of the sliding hole (311).

6. The punching device according to claim 3, characterized in that The punching assembly (3) further comprises an elastic member (35), one end of the elastic member (35) abuts against the first limiting convex ring (312), and the other end abuts against the second limiting convex ring (321).

7. The punching device according to claim 1, characterized in that A support ear (313) is protruded from one end of the guide sleeve (31) away from the lower die (2), and the pivot shaft (331) is passed through the support ear (313).

8. The punching device according to claim 1, characterized in that The driving member (34) is a driving rod, one end of which is fixedly connected to the peripheral wall of the cam (33).

9. The punching device according to claim 1, characterized in that The support frame (1) comprises a support plate (11) and a frame body (12); the lower mold (2) is arranged on the support plate (11); the frame body (12) is fixed on the support plate (11) and is used to be fixedly connected to the guide sleeve (31).

10. The punching device according to claim 9, characterized in that The guide sleeve (31) is provided with a plurality of threaded holes (314) at intervals along the vertical direction (Y), and the frame (12) is provided with a plurality of through holes (121), and the plurality of through holes (121) correspond one-to-one to the plurality of threaded holes (314); The support frame (1) further comprises a plurality of bolts (13), wherein the plurality of bolts (13) pass through the plurality of through holes (121) in a one-to-one correspondence and are screwed to the corresponding threaded holes (314).

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