Punch forming device for dovetail cushion block of transformer

Abstract

The utility model discloses a punch forming device for a dovetail cushion block of a transformer, which comprises a base and a support frame, a die holder is arranged above the base, the support frame is connected with a die head through a lifting mechanism, and the die head comprises a connecting block mounted on the lifting mechanism and a mounting plate detachably mounted on the connecting block. The lower end of the mounting plate is provided with a plurality of punching heads, the lower end of the connecting block is provided with a mounting groove, the upper end of the mounting plate protrudes to form a protruding block which is embedded into the mounting groove and abuts against the upper end of the mounting groove, the left side and the right side of the protruding block are each provided with a plurality of horizontal inserting holes, and the left side and the right side of the connecting block are each provided with a plurality of pin holes horizontally and correspondingly communicated with the inserting holes one to one. Bolts inserted into the insertion holes are arranged in the pin holes in a matched mode, the outer ends of the multiple bolts on the same side are connected through connecting rods, and the connecting rods and the connecting blocks are connected through locking structures; a plurality of punching holes in one-to-one correspondence with the punching heads are formed in the die holder and vertically penetrate through the die holder, in this way, a fixing plug pin is inserted into one side of the connecting block, a bolt is driven into the connecting block, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping and forming, in particular to a stamping and forming device for a transformer dovetail pad. Background Art

[0002] Dovetail-shaped pads are widely used in the transformer field. When the transformer is wound, insulation partitions are required between coil layers. The selected partition material is usually a dovetail-shaped pad, which is made by stamping.

[0003] The punching head in a general stamping forming device is usually installed on a mounting plate, and then the mounting plate is installed on the connecting block of the lifting mechanism. The mounting plate and the connecting block are detachably connected, which is convenient for replacing the punching head. The usual detachable connection method is bolt connection. In the usual method, when the mounting plate is locked on the connecting block by bolts, the bolts are driven in from the bottom of the mounting plate. Since a number of punching heads are installed at the lower end of the mounting plate, it is easy to collide with the punching heads when driving the bolts, affecting the action of driving the bolts. In addition, since the bolts are driven from the bottom, in order to observe the position clearly, it is usually necessary to tilt the head to the bottom of the mounting plate for observation, which is very inconvenient. Utility Model Content

[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a stamping forming device for a transformer dovetail gasket.

[0005] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0006] A stamping and forming device for a transformer dovetail gasket comprises a base and a support frame, a die base is installed above the base, a die head is installed on the support frame through a lifting mechanism, and the die head is located above the die base and corresponds to the die head;

[0007] The die head comprises a connecting block mounted on the lifting mechanism and a mounting plate detachably mounted on the lower end of the connecting block, the lower end of the mounting plate is provided with a plurality of punching heads, the lower end of the connecting block is provided with a mounting groove, the upper end of the mounting plate is provided with a convex block matching the mounting groove, the convex block is embedded in the mounting groove and the upper end of the convex block is abutted against the upper end of the mounting groove, a plurality of horizontal plug holes are provided on the left and right sides of the convex block, a plurality of pin holes extending into the mounting groove and corresponding to the plurality of plug holes are provided on the left and right side walls of the connecting block, a plug pin inserted into the plug hole is matched in the pin hole, the outer ends of the plurality of plug pins located on the same side of the connecting block are connected and fixed by a connecting rod, and the connecting rod and the connecting block are connected by a locking structure;

[0008] The die base is provided with a plurality of punching holes corresponding to the punching heads one by one, and the punching holes are arranged vertically through the die base, and the die base is installed above the base through a bracket.

[0009] According to a preferred technical solution, the locking structure includes a connecting portion protruding from the upper or lower end of the connecting rod, the connecting portion has a connecting hole that passes horizontally therethrough, a threaded hole corresponding to the connecting hole is provided on the side wall of the connecting block, and a bolt that is threadedly connected to the threaded hole is provided in the connecting hole.

[0010] According to a preferred technical solution, a regulating hole is provided at the inner end of the jack extending inwardly, and an inner wall at the upper end of the regulating hole is gradually inclined downward from the direction close to the jack toward the inner end.

[0011] According to a preferred technical solution, the inner end of the plug has an inclined surface that is in contact with the inner wall of the upper end of the regulating hole, and the inclined surface gradually slopes downward from the upper end of the plug toward the inner end of the plug, and the inclined length of the inclined surface is smaller than the inclined length of the inner wall of the regulating hole.

[0012] According to a preferred technical solution, the cross-sectional shapes of the pin hole, the insertion hole and the regulating hole are all rectangular.

[0013] According to a preferred technical solution, both front and rear ends of the connection block are fixed with positioning rods arranged vertically downward, and both front and rear ends of the mounting plate have positioning holes matching the positioning rods.

[0014] According to a preferred technical solution, a handle is fixedly provided on the left and right sides of the mounting plate respectively.

[0015] According to a preferred technical solution, the lifting mechanism comprises a hydraulic press vertically mounted on a support frame, and an output rod of the hydraulic press is fixedly connected downward to a connecting block.

[0016] According to a preferred technical solution, a horizontal belt conveyor is provided between the mold base and the base, and the belt conveyor corresponds to a plurality of punching holes.

[0017] Compared with the prior art, the beneficial effects are:

[0018] The utility model has a simple structure and is easy to use. After the protrusion is embedded in the installation groove, the pin is pushed into the insertion hole, and then the connecting rod is locked, so that the mounting plate is fixed on the connecting block. This method inserts the fixing pin and the bolt from one side of the connecting block, which is convenient and quick when replacing the punching head. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view cross-sectional schematic diagram of the utility model;

[0020] Figure 2 yes Figure 1 The enlarged structural diagram of part A in the middle;

[0021] Figure 3 It is a schematic diagram of the side view structure of the die head in the utility model.

[0022] Figure numerals: 1. base; 2. support frame; 3. die base; 4. punching hole; 5. belt conveyor; 6. connecting block; 7. mounting plate; 8. mounting groove; 9. protrusion; 10. punching head; 11. hydraulic cylinder; 12. latch; 13. connecting rod; 14. bolt; 15. pin hole; 16. socket; 17. regulating hole; 18. inclined surface; 19. handle; 20. positioning rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] A stamping forming device for a transformer dovetail pad comprises a base 1 and a support frame 2, a die base 3 is installed above the base 1, the support frame 2 is installed on the base 1, and a die head is installed on the support frame 2 through a lifting mechanism for driving the die head to lift vertically, and the die head is located above and corresponding to the die base 3;

[0025] The die head comprises a connection block 6 mounted on a lifting mechanism and a mounting plate 7 detachably mounted on the lower end of the connection block 6. The lower end of the mounting plate 7 is provided with a plurality of punching heads 10, which are used to punch out dovetail-shaped pads on the plate. Therefore, the punching heads 10 match the shape of the dovetail pads.

[0026] The lower end of the connecting block 6 is provided with a mounting groove 8, and the upper end of the mounting plate 7 is protruded with a convex block 9 matching the mounting groove 8. The convex block 9 is embedded in the mounting groove 8 and the upper end of the convex block 9 is against the upper end of the mounting groove 8. A plurality of horizontal plug holes 16 are provided on the left and right sides of the convex block 9. A plurality of pin holes 15 extending into the mounting groove 8 and corresponding to the plurality of plug holes 16 are provided on the left and right side walls of the connecting block 6. A plug 12 inserted into the plug hole 16 is matched in the pin hole 15. The outer ends of the plurality of plugs 12 located on the same side of the connecting block 6 are connected and fixed by a connecting rod 13. The connecting rod 13 is connected to the connecting block 6 by a locking structure. After the convex block 9 is embedded in the mounting groove 8, the plug 12 is pushed into the plug hole 16, and then the connecting rod 13 is locked, so that the mounting plate 7 is fixed to the connecting block 6.

[0027] The die base 3 is provided with a plurality of punching holes 4 corresponding to the punching heads 10 one by one, and the punching holes 4 are vertically penetrated through the die base 3. The die base 3 is installed above the base 1 through a bracket, and the raw material sheet is placed on the upper end of the die base 3. Then, the punching head 10 is driven by the lifting structure to descend and pass through the sheet, thereby punching out a dovetail pad from the sheet. The punched dovetail pad enters the punching hole 4, and then falls along the punching hole 4. The punching head 10 rises and resets under the drive of the lifting mechanism.

[0028] A preferred technical solution, the locking structure includes a connecting portion protruding from the upper end or the lower end of the connecting rod 13, the connecting portion has a connecting hole that passes horizontally, the side wall of the connecting block 6 has a threaded hole corresponding to the connecting hole, and a bolt 14 screwed to the threaded hole is provided in the connecting hole. After the pin 12 is pushed into the socket 16, the bolt 14 is tightened to fix it.

[0029] According to a preferred technical solution, an adjusting hole 17 is extended inward from the inner end of the socket 16, and the inner wall of the upper end of the adjusting hole 17 is gradually inclined downward from the direction close to the socket 16 toward the inner end. In order to ensure that the pin 12 can be accurately inserted into the socket 16, the aperture of the socket 16 is usually slightly larger than the size of the pin 12. Therefore, after the mounting plate 7 is fixed, there will be a gap between the upper end of the protrusion 9 and the upper end of the mounting groove 8, which will cause the protrusion 9 to collide with the upper end of the mounting groove 8 during stamping. Through this solution, when the pin 12 is inserted into the socket 16, the inner end of the pin 12 presses against the inclined upper inner wall of the adjusting hole 17, which will push the protrusion 9 up, so that the upper end of the protrusion 9 is tightly pressed against the upper end of the mounting groove 8.

[0030] According to a preferred technical solution, the inner end of the latch 12 has an inclined surface 18 which is in contact with the inner wall of the upper end of the regulating hole 17. The inclined surface 18 gradually inclines downward from the upper end of the latch 12 toward the inner end of the latch 12. The inclined length of the inclined surface 18 is less than the inclined length of the inner wall of the regulating hole 17.

[0031] According to a preferred technical solution, the cross-sectional shapes of the pin hole 15 , the plug hole 16 and the regulating hole 17 are all rectangular, and the rectangular arrangement prevents the latch 12 from rotating in the pin hole 15 , the plug hole 16 and the regulating hole 17 .

[0032] According to a preferred technical solution, both front and rear ends of the connecting block 6 are fixed with positioning rods 20 arranged vertically downward, and the front and rear ends of the mounting plate 7 have positioning holes matching the positioning rods 20. When installing the mounting plate 7 on the connecting block 6, the positioning rods 20 are inserted into the positioning holes for positioning, which facilitates installation.

[0033] According to a preferred technical solution, a handle 19 is fixedly provided on the left and right sides of the mounting plate 7 , respectively, so that the mounting plate 7 can be easily lifted by the handle 19 .

[0034] According to a preferred technical solution, the lifting mechanism comprises a hydraulic press vertically mounted on the support frame 2 , and an output rod of the hydraulic press is fixedly connected to the connecting block 6 downward.

[0035] According to a preferred technical solution, a horizontal conveyor belt 5 is provided between the die base 3 and the base 1 , and the conveyor belt 5 corresponds to a plurality of punching holes 4 , and the dovetail pads dropped from the punching holes 4 fall onto the conveyor belt 5 and are transported away.

[0036] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A stamping forming device for a transformer dovetail pad, characterized in that: It comprises a base (1) and a support frame (2), wherein a die base (3) is installed above the base (1), and a die head is installed on the support frame (2) via a lifting mechanism, wherein the die head is located above the die base (3) and corresponds to the die base; The die head comprises a connecting block (6) mounted on a lifting mechanism and a mounting plate (7) detachably mounted on the lower end of the connecting block (6); a plurality of punching heads (10) are arranged at the lower end of the mounting plate (7); a mounting groove (8) is provided at the lower end of the connecting block (6); a convex block (9) matching the mounting groove (8) is protruded from the upper end of the mounting plate (7); the convex block (9) is embedded in the mounting groove (8) and the upper end of the convex block (9) is against the upper end of the mounting groove (8); A plurality of horizontal plug holes (16) are provided on both the left and right sides; a plurality of pin holes (15) extending into the mounting groove (8) and corresponding to the plurality of plug holes (16) are provided on both the left and right side walls of the connection block (6); a plug pin (12) inserted into the plug hole (16) is matched in the pin hole (15); the outer ends of the plurality of plug pins (12) on the same side of the connection block (6) are connected and fixed by a connecting rod (13); and the connecting rod (13) and the connection block (6) are connected by a locking structure; The die base (3) is provided with a plurality of punching holes (4) corresponding one to one with the punching heads (10), the punching holes (4) vertically penetrating the die base (3), and the die base (3) is installed above the base (1) via a bracket.

2. A stamping forming device for a transformer dovetail spacer according to claim 1, characterized in that: The locking structure comprises a connecting portion protruding from the upper end or the lower end of the connecting rod (13), the connecting portion having a connecting hole extending horizontally therethrough, a threaded hole corresponding to the connecting hole being provided on the side wall of the connecting block (6), and a bolt (14) being threadedly connected to the threaded hole being provided in the connecting hole.

3. A stamping and forming device for a transformer dovetail spacer according to claim 1, characterized in that: An adjusting hole (17) is provided at the inner end of the insertion hole (16) extending inwardly, and an inner wall of the upper end of the adjusting hole (17) is gradually inclined downward from the direction close to the insertion hole (16) toward the inner end.

4. A stamping and forming device for a transformer dovetail spacer according to claim 3, characterized in that: The inner end of the latch pin (12) has an inclined surface (18) which is in contact with the inner wall of the upper end of the regulating hole (17); the inclined surface (18) gradually inclines downward from the upper end of the latch pin (12) toward the inner end surface of the latch pin (12); and the inclined length of the inclined surface (18) is less than the inclined length of the inner wall of the regulating hole (17).

5. The stamping forming device for transformer dovetail spacer according to claim 3, characterized in that: The cross-sectional shapes of the pin hole (15), the insertion hole (16) and the regulating hole (17) are all rectangular.

6. The stamping forming device for transformer dovetail spacer according to claim 1, characterized in that: Positioning rods (20) arranged vertically downward are fixedly provided at both the front and rear ends of the connection block (6), and positioning holes matching the positioning rods (20) are provided at both the front and rear ends of the mounting plate (7).

7. The stamping forming device for transformer dovetail spacer according to claim 1, characterized in that: A handle (19) is fixedly provided on the left and right sides of the mounting plate (7), respectively.

8. The stamping and forming device for transformer dovetail spacer according to claim 1, characterized in that: The lifting mechanism comprises a hydraulic press vertically mounted on a support frame (2), wherein an output rod of the hydraulic press is fixedly connected downwardly to a connecting block (6).

9. The stamping forming device for transformer dovetail spacer according to claim 1, characterized in that: A horizontal conveying belt conveyor (5) is provided between the die base (3) and the base (1), and the belt conveyor (5) corresponds to a plurality of punching holes (4).

Images