CN117505672B - Stamping device for power transformer shell - Google Patents

Abstract

The present invention belongs to the technical field of transformer shell stamping, and specifically discloses a power transformer shell stamping device, comprising a cabinet and a stamping block, and a recessed forming groove arranged above the cabinet, and the top of the cabinet is fixedly connected to a support plate through four support rods, the top of the support plate is fixedly connected to a hydraulic telescopic cylinder, the output end of the hydraulic telescopic cylinder passes through the support plate and is fixedly connected to a sliding plate, and the stamping block is arranged below the sliding plate. The present invention utilizes the hydraulic telescopic cylinder to drive the stamping block to move downward, and the metal sheet is stamped through the cooperation between the stamping block and the forming groove to form the required shape of the power transformer shell, and then the extrusion rod is driven to move downward through the continued operation of the hydraulic telescopic cylinder to extrude the extrusion block, so that the extrusion block moves and pushes the stamping head to move at the same time, and the side wall of the stamped metal plate is opened, thereby realizing the integrated processing of stamping forming and side hole stamping of the transformer shell, and effectively improving the working efficiency of the device.

Description

A power transformer shell stamping device

Technical field

The invention belongs to the technical field of transformer shell stamping, and in particular relates to a power transformer shell stamping device.

Background technique

A power transformer is a device that uses the electromagnetic mutual induction effect to convert voltage, current and impedance. When the transformer is used in an outdoor environment, the transformer shell needs to be protected to prevent operating accidents caused by small animals and other foreign objects entering the transformer, which can effectively protect the transformer. Personal safety and plays a certain electromagnetic shielding role. When producing transformer casings, stamping devices need to be used to apply external force to the metal sheets using presses and molds to deform them, thereby obtaining workpieces (stamping parts) of the required shape and size. .

The prior art discloses a stamping device for transformer casing production with publication number CN218692918U. The device grabs the steel plate by a suction cup. When the steel plate moves under the stamping block, the lateral position remains unchanged, thereby improving the accuracy of the position where the steel plate needs to be stamped. The transformer casing is ejected backward by a support plate, so that the transformer casing is automatically shed, thereby reducing labor intensity. At the same time, the composite working setting of feeding and shedding is used, so that the formed transformer casing can be shed while feeding, thereby improving work efficiency.

Although the stamping process of the power transformer shell can be realized, in the actual production process, in order to facilitate the subsequent assembly of the transformer shell, it is necessary to use other stamping equipment to punch holes around the stamped sheet material, which makes the transformer shell production process more complicated and cannot be processed as a whole, greatly reducing the production efficiency of the device.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art and to propose a power transformer casing stamping device.

To achieve the above purpose, the present invention provides a power transformer housing stamping device, comprising a cabinet and a stamping block, and a recessed forming groove arranged above the cabinet, and the top of the cabinet is fixedly connected to a support plate through four support rods, the top of the support plate is fixedly connected to a hydraulic telescopic cylinder, the output end of the hydraulic telescopic cylinder passes through the support plate and is fixedly connected to a sliding plate, the stamping block is arranged below the sliding plate, the top of the stamping block is connected to a mounting plate through bolts, a pair of nitrogen springs are fixedly installed between the mounting plate and the sliding plate, extrusion rods are arranged at the bottom of the sliding plate and around the stamping block, the bottom ends of the extrusion rods are all inclined toward the adjacent side, and the bottom ends of the extrusion rods are all arranged higher than the bottom end of the stamping block;

There are chute all around the top of the cabinet, and the inside of the chute is slidingly connected with an extrusion block. The top of the extrusion block is tilted toward the far side and fits with the inclined surface of the bottom end of the extrusion rod. , a punching head is fixedly connected to one side of the extrusion block, and a punching slot is provided on the inner wall of the forming groove and corresponding to the punching head, and the end of the punching head is arranged in the punching slot In the slot, an upper spring is fixedly connected between the far side of the extrusion block and the inside of the cabinet. When the hole is punched, the hydraulic telescopic cylinder drives the extrusion rod to move downward, so that the bottom of the extrusion rod moves downward. The end inclined surface and the top inclined surface of the extrusion block are squeezed, and the extrusion block is pushed to move closer to the side, so that the punching head moves to achieve punching and opening of the plate.

Preferably, a through slot is provided at the top of the sliding plate and at a position corresponding to the extrusion rod. A top plate is fixedly connected to the top of the extrusion rod and located in the through groove. The top ends of the top plates are fixedly connected through a connecting frame. .

Preferably, a pair of screws are threadedly connected to the bottom of the sliding plate, and the top of the screws is rotatably connected to the bottom end of the connecting frame.

Preferably, there are adapter grooves on the top of the cabinet and around the forming groove, and roller rods are rotatably connected in the adapter grooves.

Preferably, three limiting plates for limiting the position of the plates are fixedly connected to the top of the cabinet.

Preferably, guide rods are fixedly connected to both sides of the middle portion between the support plate and the cabinet and are provided through the sliding plate, and the sliding plate is slidingly connected to the outer wall of the guide rod.

Preferably, a scraping plate is slidably connected to the inside of the forming tank, a positioning rod is fixedly connected to the bottom of the scraping plate and is disposed through the bottom of the molding tank, and a roller is fixedly connected to the bottom of the positioning rod, and the inner wall of the cabinet is An electric push rod is fixedly connected, and the output end of the electric push rod is fixedly connected with a positioning block. The top of the positioning block is provided with a lower inclined surface, and the outer wall of the roller is in contact with the surface of the lower inclined surface.

Preferably, a positioning ring is fixedly connected to the outer wall of the positioning rod, and a lower spring is fixedly connected between the top of the positioning ring and the top of the cabinet body.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention uses a hydraulic telescopic cylinder to drive the stamping block to move downward. Through the cooperation between the stamping block and the forming groove, the metal sheet is stamped to form the required shape of the power transformer casing. Then, the hydraulic telescopic cylinder continues to work to drive the extrusion. The rod moves downward, squeezing the extrusion block, causing the extrusion block to move while pushing the stamping head to move, and punching the side wall of the stamped metal plate to achieve stamping forming and side hole punching of the transformer casing. Integrated processing effectively improves the working efficiency of the device.

2. The present invention drives the connecting frame to move by rotating the screw, and then drives the top plate and the extrusion rod to move, so that when the stamping block is replaced according to the stamping of transformer shells of different specifications, the height position of the extrusion rod can be adjusted. Improve the general performance of the device.

Description of drawings

Figure 1 is a schematic diagram of the overall front appearance structure of the stamping device of the present invention;

Figure 2 is a schematic diagram of the front fully cutaway three-dimensional structure of the stamping device of the present invention;

Figure 3 is a schematic diagram of the front full-section three-dimensional structure of the cabinet of the present invention;

Figure 4 is a partially enlarged structural schematic diagram of position A of the present invention;

Figure 5 is a schematic diagram of the overall structure of the front side of the sliding plate of the present invention;

Figure 6 is a schematic diagram of the overall appearance structure of the connecting frame of the present invention viewed from below.

In the figure: 1. cabinet; 2. support plate; 3. hydraulic telescopic cylinder; 4. punching block; 5. forming groove; 6. sliding plate; 7. extrusion rod; 8. nitrogen spring; 9. slide groove; 10. extrusion block; 11. punching head; 12. upper spring; 13. top plate; 14. connecting frame; 15. screw rod; 16. mounting plate; 17. adapter groove; 18. rolling rod; 19. limit plate; 20. guide rod; 21. feeding plate; 22. positioning rod; 23. roller; 24. electric push rod; 25. positioning block; 26. lower inclined surface; 27. positioning ring; 28. lower spring; 29. punching groove; 30. support rod; 31. through groove.

Detailed ways

In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1 to 6, a power transformer shell stamping device includes a cabinet 1 and a stamping block 4, as well as an indented forming groove 5 provided above the cabinet 1, and the top of the cabinet 1 passes through four support rods. 30 is fixedly connected to a support plate 2, and a hydraulic telescopic cylinder 3 is fixedly connected to the top of the support plate 2. The output end of the hydraulic telescopic cylinder 3 passes through the support plate 2 and is fixedly connected to a sliding plate 6. The stamping block 4 is arranged below the sliding plate 6. The stamping block The top of 4 is connected with a mounting plate 16 through bolts. A pair of nitrogen gas springs 8 are fixedly installed between the mounting plate 16 and the sliding plate 6. An extrusion rod 7 is provided at the bottom of the sliding plate 6 and around the stamping block 4. The bottom of the extrusion rod 7 is The ends are inclined toward the side closer to each other, and the bottom ends of the extrusion rods 7 are set higher than the bottom ends of the stamping blocks 4;

There are chutes 9 all around the top of the cabinet 1. The insides of the chutes 9 are slidingly connected with extrusion blocks 10. The tops of the extrusion blocks 10 are tilted toward the far side and fit in line with the inclined surface at the bottom of the extrusion rod 7. , a punching head 11 is fixedly connected to one side of the extrusion block 10, and a punching slot 29 is provided on the inner wall of the forming groove 5 and corresponding to the punching head 11, and the end of the punching head 11 is arranged in the punching hole. In the groove 29, an upper spring 12 is fixedly connected between the far side of the extrusion block 10 and the inside of the cabinet 1. When punching and opening, the hydraulic telescopic cylinder 3 drives the extrusion rod 7 to move downward, so that the extrusion rod 7 The bottom inclined surface and the top inclined surface of the extrusion block 10 are squeezed, pushing the extrusion block 10 to move closer to each other, causing the punching head 11 to move to achieve punching and opening of the plate;

When stamping the metal sheet into a transformer casing, first place the metal sheet between the three limit plates 19 on the cabinet 1, and then start the hydraulic telescopic cylinder 3 to push the sliding plate 6 to move downward, and then drive the punching block 4 Move downward to squeeze the metal sheet inside the forming groove 5 to form the required shape of the power transformer shell. At this time, the pressure is too small and the nitrogen in the nitrogen spring 8 will not be compressed, and the bottom of the extrusion rod 7 is tilted at this time. The surface will come into contact with the inclined surface on the top of the extrusion block 10, and then the hydraulic telescopic cylinder 3 continues to work, and the taking plate 21 exerts an extrusion force on the stamping block 4, thus squeezing the nitrogen spring 8 and compressing the high-pressure nitrogen inside it;

At the same time, it drives the extrusion rods 7 around to move downward, and the extrusion block 10 is extruded by the setting of the inclined surface, so that the four extrusion blocks 10 slide in the slide groove 9 to the side close to each other, and at the same time, the upper spring 12 is stretched, thereby pushing the punch head 11 to move, and the side wall of the stamped metal plate is punched, thereby realizing the integrated processing of stamping and side hole stamping of the transformer casing. After the completion, the hydraulic telescopic cylinder 3 can be controlled to reset. At this time, the extrusion force on the stamping block 4 disappears, and the high-pressure nitrogen in the nitrogen spring 8 will expand to obtain a certain rebound force to reset it. At the same time, the extrusion rod 7 will slide upward to release the extrusion of the extrusion block 10, and then the elastic force of the upper spring 12 will pull the extrusion block 10 to reset, and finally the stamped transformer casing can be taken out.

As shown in Figures 5 and 6, in order to be suitable for stamping blocks 4 of different specifications, through-slots 31 are provided on the top of the sliding plate 6 and corresponding to the extrusion rod 7. The top of the extrusion rod 7 is located in the through-slot 31 There are top plates 13 fixedly connected inside, and the tops of the top plates 13 are fixedly connected by connecting frames 14. The bottom of the sliding plate 6 is threadedly connected with a pair of screws 15. The tops of the screws 15 are rotationally connected to the bottom of the connecting frame 14, and the screws 15 move spirally by rotating the screws 15. The connecting frame 14 is driven to move, and then the top plate 13 and the extrusion rod 7 are driven to move, so that when the stamping block 4 is replaced according to the stamping of transformer shells of different specifications, the height position of the extrusion rod 7 can be adjusted to improve the versatility of the device. performance.

As shown in Figures 2, 3, and 4, there are adapter grooves 17 on the top of the cabinet 1 and around the forming groove 5. The adapter grooves 17 are rotatably connected with roller rods 18. Through the arrangement of the roller rods 18, It can protect the metal sheet when it comes into contact with the corners of the forming groove 5 when stamping the metal sheet to prevent the corners of the forming groove 5 from scratching the surface of the metal sheet. There are three fixed connections on the top of the cabinet 1 for limiting the position of the sheet. The limit plate 19 can position the metal plate and improve the stamping accuracy of the device. The guide rods 20 are fixedly connected to both sides of the middle between the support plate 2 and the cabinet 1 and are provided through the sliding plate 6 , and the sliding plate 6 is slidingly connected to the outer wall of the guide rod 20. The guide rod 20 can guide the sliding of the sliding plate 6, thereby improving the sliding stability of the sliding plate 6 and thus improving the stamping accuracy of the device.

As shown in Figures 2 and 3, in order to realize the automatic discharging of the device, a scraping plate 21 is slidingly connected to the inside of the forming tank 5. A positioning rod 22 is fixedly connected to the bottom of the scraping plate 21 and is provided through the bottom of the shaping tank 5, and is positioned A roller 23 is fixedly connected to the bottom of the rod 22, an electric push rod 24 is fixedly connected to the inner wall of the cabinet 1, and a positioning block 25 is fixedly connected to the output end of the electric push rod 24. The top of the positioning block 25 is provided with a lower inclined surface 26, and the roller 23 The outer wall is in surface contact with the lower inclined surface 26, the outer wall of the positioning rod 22 is fixedly connected with a positioning ring 27, and a lower spring 28 is fixedly connected between the top of the positioning ring 27 and the inner top of the cabinet 1;

After the stamping of the metal sheet is completed, the electric push rod 24 can be controlled to start, and then the positioning block 25 is driven to move. Through the setting of the lower inclined surface 26, the roller 23 can be pushed to slide upward along with the movement of the positioning block 25, thereby promoting the material removal. The plate 21 moves upward, pushing the stamped transformer shell out of the forming groove 5, and at the same time stretching the lower spring 28, which facilitates workers to take materials, without the need for workers to dig out the transformer shell from the forming groove 5, improving the convenience of the device. After taking out the transformer casing, the electric push rod 24 can be controlled to reset, which then drives the positioning block 25 to move to release the squeeze on the roller 23, thereby pushing the positioning ring 27, the positioning rod 22 and the scraper plate 21 to slide downward through the elastic force of the lower spring 28. Perform a reset.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited to the above embodiments. What is described in the above embodiments and descriptions is only the principle of the present invention. The present invention may also have various modifications without departing from the spirit and scope of the present invention. changes and improvements that fall within the scope of the claimed invention. The scope of protection required for the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A power transformer shell stamping device, including a cabinet (1) and a stamping block (4), as well as an indented forming groove (5) provided above the cabinet (1), and the top of the cabinet (1) A support plate (2) is fixedly connected through four support rods (30), and a hydraulic telescopic cylinder (3) is fixedly connected to the top of the support plate (2). It is characterized in that: the output end of the hydraulic telescopic cylinder (3) passes through A sliding plate (6) is fixedly connected to the supporting plate (2), the stamping block (4) is arranged below the sliding plate (6), and a mounting plate (16) is connected to the top of the stamping block (4) through bolts, so A pair of nitrogen gas springs (8) are fixedly installed between the mounting plate (16) and the sliding plate (6). There are extrusion rods (7) at the bottom of the sliding plate (6) and around the stamping block (4). The bottom ends of the extrusion rods (7) are all inclined toward the side closer to each other, and the bottom ends of the extrusion rods (7) are all set higher than the bottom end of the stamping block (4); There are chutes (9) all around the top of the cabinet (1), and extrusion blocks (10) are slidingly connected to the insides of the chute (9). The tops of the extrusion blocks (10) are all facing away from each other. One side is inclined and is in contact with the inclined surface of the bottom of the extrusion rod (7). The extrusion block (10) is fixedly connected to a stamping head (11) on one side, and the inside of the forming groove (5) is There are perforated slots (29) on the wall and corresponding positions of the punching head (11), and the end of the punching head (11) is arranged in the perforated slot (29), and the extrusion block (10) An upper spring (12) is fixedly connected between the far side and the inner side of the cabinet (1). When the hole is punched, the hydraulic telescopic cylinder (3) drives the extrusion rod (7) to move downward, so that the The inclined surface at the bottom of the extrusion rod (7) squeezes the inclined surface at the top of the extrusion block (10), pushing the extrusion block (10) to move closer to one side, so that the punching head (11) Move to achieve punching and opening of the plate; A through-slot (31) is provided at the top of the sliding plate (6) and at a position corresponding to the extrusion rod (7). A top plate is fixedly connected to the top of the extrusion rod (7) and located in the through-slot (31). (13), the tops of the top plates (13) are fixedly connected through the connecting frame (14), the bottom of the sliding plate (6) is threadedly connected with a pair of screws (15), and the top of the screws (15) is rotatably connected to The bottom end of the connecting frame (14); A material taking plate (21) is slidably connected to the inner side of the forming groove (5); a positioning rod (22) is fixedly connected to the bottom of the material taking plate (21) and is arranged to penetrate the bottom of the forming groove (5); a roller (23) is fixedly connected to the bottom of the positioning rod (22); an electric push rod (24) is fixedly connected to the inner wall of the cabinet (1); a positioning block (25) is fixedly connected to the output end of the electric push rod (24); a lower inclined surface (26) is provided on the top of the positioning block (25); and an outer wall of the roller (23) is in contact with the surface of the lower inclined surface (26). 2. A power transformer housing stamping device according to claim 1, characterized in that: the top of the cabinet (1) and around the forming groove (5) are provided with adapting grooves (17), and the adapting grooves (17) are rotatably connected with rollers (18). 3. A power transformer shell stamping device according to claim 1, characterized in that: three limiting plates (19) for limiting the position of the plate are fixedly connected to the top of the cabinet (1). 4. A power transformer shell stamping device according to claim 1, characterized in that: guide rods (20) are fixedly connected to both sides of the middle between the support plate (2) and the cabinet (1) and penetrate through it. A sliding plate (6) is provided, and the sliding plate (6) is slidingly connected to the outer wall of the guide rod (20). 5. A power transformer shell stamping device according to claim 1, characterized in that: a positioning ring (27) is fixedly connected to the outer wall of the positioning rod (22), and the top of the positioning ring (27) is connected to the cabinet (27). 1) A lower spring (28) is fixedly connected between the inner tops.