Positioning punching point tool for transformer box body

Abstract

A positioning point punching tool for a transformer box belongs to the technical field of transformer production and comprises a barrel, an operating rod, a core rod and a deflector rod, the operating rod is mounted in the barrel, the core rod is mounted in the operating rod, and the deflector rod is mounted in the barrel and is in lap joint with the core rod inwards. The cylinder comprises an outer cylinder, a conical head, an inner cavity, mounting grooves, a hinge hole and a limiting cylinder, the conical head is arranged at the bottom of the outer cylinder, the inner cavity is formed in the center of the outer cylinder, an operating rod is sleeved with the inner cavity, a pair of mounting grooves are formed in the inner wall of the inner cavity, deflector rods are mounted in the mounting grooves, and the hinge hole penetrating through the outer cylinder is formed in the bottom of each mounting groove and hinged to the deflector rods. The top of the outer cylinder is provided with a limiting cylinder, and the inner side of the limiting cylinder is provided with a pair of limiting plates. The operating rod comprises a bushing, a side groove, a middle platform, extension rods, an upper platform and a large spring, the bushing is mounted in the inner cavity in a sleeving manner, the through side groove is further formed below the bushing, the middle platform is arranged at the top of the bushing, the core rod penetrates through the lower portion of the middle platform, a pull rod of the core rod penetrates out of the middle platform upwards, and the extension rods extend upwards from the two sides of the middle platform.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer production, and in particular relates to a transformer box positioning punching tool. Background Art

[0002] During the manufacturing process of the transformer box, multiple plates are combined into a box structure by welding or screwing. For some parts that need to be opened for connection, in order to improve the positioning accuracy of the opening, it is usually necessary to punch points on the hole position in advance to facilitate the subsequent opening operation. The most common tool for this operation is the sample punch, which has been used in the manufacturing industry for many years. The tool seems simple, but it actually has high requirements for operators. First, the sample punch is prone to slip when knocking, resulting in punching failure or even damage to the plate. Second, the knocking force needs to be accurately controlled. If you are not careful, the plate may be damaged due to excessive knocking force. Therefore, for plates that are frequently used and the application objects are relatively consistent, it is possible to consider developing a punching tool that is easier to operate. Summary of the invention

[0003] The present invention provides a transformer box positioning punching tool to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical solutions: A transformer box positioning punching tool comprises a barrel, an operating rod, a core rod and a lever, wherein the operating rod is installed in the barrel, the core rod is installed in the operating rod, and the lever is installed in the barrel and overlapped with the core rod inwardly.

[0005] The cylinder body includes an outer cylinder, a cone head, an inner cavity, a mounting groove, a hinge hole and a limit cylinder. The outer cylinder has a cone head at the bottom, an inner cavity in the center, an operating rod is installed in the inner cavity, a pair of mounting grooves are provided on the inner wall of the inner cavity, a lever is installed in the mounting groove, a hinge hole is provided at the bottom of the mounting groove that passes through the outer cylinder, and the hinge hole is hinged to the lever. A limit cylinder is installed on the top of the outer cylinder, the limit cylinder is installed on the top of the outer cylinder through threads, and a pair of limit plates are provided on the inner side of the limit cylinder.

[0006] The operating rod includes a liner, side grooves, a middle platform, an extension rod, an upper platform and a large spring. The liner is sleeved and installed in the inner cavity. There is also a through side groove at the bottom of the liner. The position of the side groove corresponds to the position of the installation groove, providing an installation passage for the lever. There is a middle platform on the top of the liner, and a core rod is passed under the middle platform. The pull rod of the core rod passes through the middle platform upward. Extension rods extend upward on both sides of the middle platform. There is an upper platform on the top of the extension rod. A large spring is installed between the bottom of the side wall of the liner and the bottom of the inner cavity.

[0007] The core rod includes a cylinder, a side plane, a side hook, a firing pin, a pull rod, a round nut and a small spring. The cylinder is sleeved and installed in the bushing. A pair of side planes are provided at opposite positions on the sides of the cylinder. The installation positions of the side planes correspond to the side grooves. The upper part of the side plane is provided with a side hook. The upper part of the side hook is an inclined surface, and the lower part has a small-sized plane. The lower plane is used to hook the inner boss of the lever. A firing pin extends downward from the bottom of the cylinder, and a pull rod extends upward from the top of the cylinder. The pull rod passes through the middle platform upward, and a small spring is installed under the pull rod. The small spring is located between the cylinder and the middle platform. A round nut is installed on the upper part of the pull rod, and the round nut is located above the middle platform.

[0008] The lever includes a support rod, an inner boss, an outer inclined platform and a lower support. An outer inclined platform protrudes outward from the top of the support rod, and the top of the outer inclined platform is an inwardly inclined slope. An inner boss is provided on the inner side of the support rod at a position lower than the outer inclined platform. The inner boss hooks the side flat hook so that the core rod can store force through a small spring. A lower support is provided on the outer side of the bottom of the support rod, and the lower support is connected to the hinge hole. The lever is hingedly installed in the mounting groove. The hole position of the lower support of the lever should be located on the outside of the lever so that the center of gravity of the entire lever is located on the inside.

[0009] Furthermore, the inner wall of the inner cavity has a pair of guide grooves, and the guide grooves cooperate with the guide of the operating rod to realize the movement guidance of the operating rod. There are guide blocks on both sides below the liner, and the guide blocks are sleeved in the guide grooves to guide the movement of the operating rod.

[0010] The beneficial effects of the present invention are: The present invention is used for punching point positioning operation during transformer box production. It has an operating rod for compression operation and a lever for controlling the movement of a core rod. When the operating rod is pressed down to a certain position, a small spring releases the core rod to move the cone head downward to complete the punching point operation. The strength of the punching point operation can be adjusted by adjusting the position of the round nut or by replacing a small spring with a suitable elastic coefficient. Furthermore, by replacing the lever and selecting a lever with a suitable distance between the outer inclined platform and the inner convex platform, the punching point strength can also be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the present invention; Figure 2 It is a front view of the present invention; Figure 3 is an exploded view of the present invention; In the figure: 10. cylinder, 11. outer cylinder, 12. cone head, 13. inner cavity, 14. mounting groove, 15. guide groove, 16. hinge hole, 17. limit cylinder, 171. limit plate, 20. operating rod, 21. bushing, 22. guide block, 23. side groove, 24. middle platform, 25. extension rod, 26. upper platform, 27. large spring, 30. core rod, 31. cylinder, 32. side plane, 33. side flat hook, 34. striker, 35. pull rod, 36. round nut, 37. small spring, 40. lever, 41. support rod, 42. inner boss, 43. outer inclined platform, 44. lower support. DETAILED DESCRIPTION

[0012] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0013] See also Figure 1-Figure 3 The transformer box positioning punching tool shown includes a barrel 10, an operating rod 20, a core rod 30 and a lever 40. The operating rod 20 is installed in the barrel 10, the core rod 30 is installed in the operating rod 20, and the lever 40 is installed in the barrel 10 and overlaps with the core rod 30 inwardly.

[0014] The cylinder body 10 includes an outer cylinder 11, a cone head 12, an inner cavity 13, a mounting groove 14, a guide groove 15, a hinge hole 16 and a limit cylinder 17. The outer cylinder 11 has a cone head 12 at the bottom, and the cone head 12 performs a punching operation on the plate. The outer cylinder 11 has an inner cavity 13 in the center, and an operating rod 20 is installed in the inner cavity 13. The inner walls of the inner cavity 13 have a pair of mounting grooves 14 and a guide groove 15 respectively. A lever 40 is installed in the mounting groove 14. The guide groove 15 cooperates with the guide fast 22 of the operating rod 20 to realize the movement guidance of the operating rod 20. The bottom of the mounting groove 14 has a hinge hole 16 that runs through the outer cylinder 11, and the hinge hole 16 is hinged to the lever 40. A limiting cylinder 17 is installed on the top of the outer cylinder 11. The limiting cylinder 17 is installed on the top of the outer cylinder 11 through threads. A pair of limiting plates 171 are provided on the inner side of the limiting cylinder 17. When the limiting cylinder 17 is tightened on the top of the outer cylinder 11, the limiting plates 171 are located above the guide groove 15 to limit the upper limit position of the operating rod 20.

[0015] The operating rod 20 includes a bushing 21, a guide block 22, a side groove 23, a middle platform 24, an extension rod 25, an upper platform 26 and a large spring 27. The bushing 21 is sleeved and installed in the inner cavity 13. There are guide blocks 22 on both sides below the bushing 21. The guide blocks 22 are sleeved in the guide groove 15 to guide the movement of the operating rod 20. There is also a through side groove 23 below the bushing 21. The side groove 23 corresponds to the position of the installation groove 14 to provide an installation passage for the lever 20. The top of the bushing 21 has There is a middle platform 24, a core rod 30 is passed through the bottom of the middle platform 24, a pull rod 35 of the core rod 30 passes through the middle platform 24 upward, extension rods 25 are extended upward on both sides of the middle platform 24, and an upper platform 26 is provided on the top of the extension rod 25. The upper platform 26 is the operating part of the operating rod 20 and provides space for the relative movement of the core rod 30 and the operating rod 20. A large spring 27 is installed between the bottom of the side wall of the liner 21 and the bottom of the inner cavity 13. Under the action of the large spring 27, the liner 21 always has a tendency to move upward.

[0016] The core rod 30 includes a cylinder 31, a side plane 32, a side hook 33, a striker 34, a pull rod 35, a round nut 36 and a small spring 37. The cylinder 31 is sleeved and installed in the liner 21. The cylinder 31 has a pair of side planes 32 at opposite positions on the side of the cylinder 31. The installation position of the side plane 32 corresponds to the side groove 23. The upper part of the side plane 32 has a side hook 33. The upper part of the side hook 33 is an inclined surface, and the lower part has a small-sized plane (not visible in the figure due to size issues). The lower plane is used to hook the inner boss 42 of the lever 40. The striker 34 extends downward from the bottom of the cylinder 31. When the core rod 30 is released, the striker 34 hits the bottom surface of the inner cavity 13 and is transmitted to the cone head 12, leaving a punch mark on the surface of the plate. A pull rod 35 extends upward from the top of the cylinder 31, and the pull rod 35 passes through the middle platform 24 upward. A small spring 37 is installed under the pull rod 35, and the small spring 37 is located between the cylinder 31 and the middle platform 24. A round nut 36 is installed on the upper part of the pull rod 35, and the round nut 36 is located above the middle platform 24 to limit the lower limit position of the core rod 30. The small spring 37 can be used to adjust the force of the striker 34 hitting the bottom surface of the inner cavity 13.

[0017] The lever 40 includes a support rod 41, an inner boss 42, an outer inclined platform 43 and a lower support 44. An outer inclined platform 43 protrudes outward from the top of the support rod 41. The top of the outer inclined platform 43 is an inwardly inclined inclined surface. When the inclined surface hits the lower edge of the upper platform 26, the lever 40 will swing outward. An inner boss 42 is provided on the inner side of the support rod 41 at a position lower than the outer inclined platform 43. The inner boss 42 hooks the side flat hook 43, so that the core rod 30 accumulates force through the small spring 37. A lower support 44 is provided on the outer side of the bottom of the support rod 41. The lower support 44 is connected to the hinge hole 16, and the lever 40 is hingedly installed in the mounting groove 14. It should be noted here that the hole position of the lower support 44 of the lever 40 should be located on the outside of the lever 40, so that the center of gravity of the entire lever 40 is located on the inside, ensuring that the entire lever 40 tilts inward in a free state to ensure subsequent normal operation.

[0018] The working principle of the present invention is as follows: when the device is in a free state, under the action of the large spring 27 and the small spring 37, the outer cylinder 11 is in the upper position, and the core rod 30 is also in the upper position. When the punching operation is required, the outer cylinder 11 is held, the cone head 12 is aligned with the position where the punching is required, and the operating rod 20 is compressed downward through the upper platform 26. At this time, the large spring 27 is compressed first, and as the operating rod 20 moves downward, the core rod 30 is lowered accordingly. Subsequently, the side flat hook 33 of the core rod 30 and the inner boss 42 are hooked with each other. At this time, the small spring 37 is compressed, and the operating rod 20 continues to be pressed down until the lower edge of the upper platform 26 touches the outer inclined platform 43 of the lever 40, and the outer inclined platform 43 is pushed outward by the lower edge of the upper platform 26. At this time, the inner boss 42 and the side flat hook 33 are disengaged, and the small spring 37 is released, pushing the core rod 30 downward, and the striker 34 strikes the inner cavity 13 and transmits the strike to the cone head 12, leaving a punching mark on the surface of the plate downward. After being released, it moves upward under the action of the large spring 27 and the small spring 37, and returns to the initial state to prepare for the next operation.

[0019] The above embodiments mainly illustrate the transformer box positioning punching tool of the present invention. Although only limited embodiments and technical features are described, those skilled in the art should understand that the present invention can be implemented in many other forms without departing from its subject matter and scope. Therefore, the embodiments shown are regarded as illustrative rather than restrictive, and the present invention may cover various modifications and replacement schemes without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A transformer box positioning punching tool, comprising a barrel (10), an operating rod (20), a core rod (30) and a lever (40), characterized in that: The operating rod (20) is installed in the cylinder (10), the core rod (30) is installed in the operating rod (20), the lever (40) is installed in the cylinder (10) and overlaps with the core rod (30) inwardly, the cylinder (10) comprises an outer cylinder (11), a cone head (12), an inner cavity (13), a mounting groove (14), a hinge hole (16) and a limiting cylinder (17), the outer cylinder (11) has a cone head (12) at the bottom, the outer cylinder (11) has an inner cavity (13) at the center, the operating rod (20) is sleeved and installed in the inner cavity (13), the inner wall of the inner cavity (13) has a pair of mounting grooves (14), the lever (40) is installed in the mounting groove (14), the bottom of the mounting groove (14) has a hinge hole (16) penetrating the outer cylinder (11), and the hinge hole (16) The outer cylinder (11) is hinged with the shifting rod (40). A limiting cylinder (17) is installed on the top of the outer cylinder (11). The limiting cylinder (17) is installed on the top of the outer cylinder (11) by means of threads. A pair of limiting plates (171) are provided on the inner side of the limiting cylinder (17). The operating rod (20) comprises a liner (21), a side groove (23), a middle platform (24), an extension rod (25), an upper platform (26) and a large spring (27). The liner (21) is sleeved and installed in the inner cavity (13). A through side groove (23) is provided below the liner (21). The position of the side groove (23) corresponds to that of the installation groove (14). A middle platform (24) is provided on the top of the liner (21). A core rod (30) is provided below the middle platform (24). A pull rod (35) of the core rod (30) extends upward out of the middle platform (24). 4), extension rods (25) extend upward on both sides of the middle platform (24), the top of the extension rod (25) has an upper platform (26), a large spring (27) is installed between the bottom of the side wall of the liner (21) and the bottom of the inner cavity (13), the core rod (30) includes a cylinder (31), a side plane (32), a side hook (33), a striker (34), a pull rod (35), a round nut (36) and a small spring (37), the cylinder (31) is sleeved and installed in the liner (21), the side of the cylinder (31) has a pair of side planes (32) at opposite positions, the installation position of the side plane (32) corresponds to the side groove (23), the upper part of the side plane (32) has a side hook (33), the upper part of the side hook (33) is an inclined surface, and the lower part has a small-sized plane, the round A striker (34) extends downward from the bottom of the column (31), a pull rod (35) extends upward from the top of the cylinder (31), the pull rod (35) passes through the middle platform (24) upward, a small spring (37) is installed below the pull rod (35), the small spring (37) is located between the cylinder (31) and the middle platform (24), a round nut (36) is installed on the upper part of the pull rod (35), and the round nut (36) is located above the middle platform (24), the lever (40) includes a support rod (41), an inner boss (42), an outer bevel (43) and a lower support (44), an outer bevel (43) protrudes outward from the top of the support rod (41), the top of the outer bevel (43) is an inwardly inclined inclined surface, and an inner boss (42) is provided on the inner side of the support rod (41) at a position lower than the outer bevel (43).The bottom outer side of the support rod (41) is provided with a lower support (44), the lower support (44) is connected with the hinge hole (16), and the lever (40) is hingedly installed in the installation groove (14), and the hole position of the lower support (44) of the lever (40) is located on the outer side of the lever (40), so that the center of gravity of the entire lever (40) is located on the inner side.

2. The transformer box positioning punching tool according to claim 1, characterized in that: The inner wall of the inner cavity (13) is provided with a pair of guide grooves (15), and the two sides below the liner (21) are respectively provided with guide blocks (22), and the guide blocks (22) are sleeved in the guide grooves (15).

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