Punching device for terminal protective cover of circuit breaker

Abstract

The utility model discloses a breaker terminal protective cover punching device which comprises an upper die, a lower die and a positioning assembly, the upper die is fixedly arranged on a punch press sliding block and moves up and down along with the punch press sliding block, the upper die is provided with a punch, the lower die is fixedly arranged on a working table top of a punch press, a die hole is formed in the surface of the lower die, and the positioning assembly is arranged on the working table top. Comprising a bottom plate, a left barrier strip, a right barrier strip, a rear barrier strip and a front barrier strip, the left barrier strip, the right barrier strip, the rear barrier strip and the front barrier strip are arranged on the bottom plate, the left barrier strip, the right barrier strip, the rear barrier strip and the front barrier strip which can be adjusted and enclosed and the bottom plate form a protective cover placing area. The positions of the left baffle, the right baffle and the front baffle are flexibly adjusted through the transverse slide way and the longitudinal slide way, a placing area of the protective cover is defined, and accurate positioning of punching operation of the protective cover is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment safety, in particular to a circuit breaker terminal protective cover punching device with good quality and high efficiency. Background Art

[0002] The upper and lower terminals of the circuit breaker are used to connect electrical equipment and transfer power to subsequent equipment. Due to the high voltage and current of the circuit breaker, the connection position of the upper and lower terminals is narrow and the spacing is small, which is easily affected by electric arcs and sparks, and may cause many dangers such as high temperature, volatilization of harmful gases, and electromagnetic radiation. In order to avoid these dangers, engineering technicians usually add protective covers to the connection of the upper and lower terminals of the circuit breaker to isolate high-temperature gases or volatilization of harmful gases or electromagnetic radiation, etc., and also to isolate and prevent operators from accidentally touching the terminals, thereby ensuring the safety of equipment and personnel. Since the connecting cables of the terminals have different sizes, when using them, it is necessary to make holes in the surface of the protective cover according to the actual cable size to meet the cable installation requirements. The existing technology generally uses cutting tools for manual operation. Although it is convenient, the incision is not beautiful and is uneven, the hole opening efficiency is low and unsafe, and the uneven incision is also likely to bring safety hazards to the surface of the cable. Utility Model Content

[0003] The utility model mainly solves the above-mentioned technical problems and provides a circuit breaker terminal protective cover punching device with good quality and high efficiency.

[0004] In order to solve the above-mentioned technical problems, the present invention mainly adopts the following technical solutions:

[0005] The utility model discloses a punching device for a terminal protective cover of a circuit breaker, which is arranged on a punching machine and is used for filling holes in the terminal protective cover. The punching device comprises an upper die, a lower die and a positioning assembly. The upper die is fixedly arranged on the punching machine slider and moves up and down with the punching machine slider. An upper die cavity is provided in the center of the upper die, and a punch is embedded and fixed in the upper die cavity. The lower die is fixedly arranged on the working table of the punching machine. A die hole is provided on the surface of the lower die, and the die hole corresponds to the punch and accommodates the punch. The positioning assembly is arranged on the working table. The above-mentioned protective cover is fixedly arranged on the positioning assembly. Using a punching machine to perform the punching operation of the protective cover can effectively improve the punching efficiency and quality of the protective cover.

[0006] Preferably, positioning holes are respectively provided at both ends of the upper die, and the surface of the lower die is provided with positioning columns corresponding to the above-mentioned positioning holes and perpendicular to the surface of the lower die. The upper die is sleeved on the positioning columns of the lower die through the positioning holes and moves up and down along the positioning columns. During the punching process, the cooperation between the positioning holes and the positioning columns makes the upper die move accurately and smoothly, thereby ensuring the punching quality.

[0007] Preferably, the positioning assembly includes a base plate and a left stop bar, a right stop bar, a rear stop bar and a front stop bar placed on the base plate, the base plate is fixedly mounted on the work table, a through hole is provided in the center of the base plate which coincides with the above-mentioned mold hole, the left stop bar, the right stop bar, the rear stop bar and the front stop bar are enclosed with the base plate to form a placement area for the above-mentioned protective cover, the above-mentioned rear stop bar is fixedly mounted on the rear side of the base plate, horizontal slides are respectively provided on the base plates at the left and right ends of the through hole, and a longitudinal slide is provided on the base plate at the front end of the through hole, the cross sections of the horizontal slides and the longitudinal slides are both inverted T-shaped structures, the bottom surface of the above-mentioned left stop bar or right stop bar is provided with an inverted T-shaped protrusion which cooperates with the above-mentioned horizontal slide, the left stop bar or the right stop bar is embedded in the horizontal slide through the protrusion and moves horizontally along the horizontal slide, the upper surface of the left stop bar or the right stop bar is provided with a vertical screw hole which passes through the left stop bar or the right stop bar. The upper surface of the front baffle is provided with a vertical screw hole that passes through the front baffle, and a positioning bolt is screwed in the screw hole, and the head of the positioning bolt passes through the front baffle and presses against the bottom surface of the longitudinal groove to fix the front baffle. The position of the left and right baffles in the horizontal slide can be adjusted according to the size of the protective cover, and the left and right positioning of the protective cover can be controlled accordingly to perform horizontal positioning and fix the protective cover. Adjust the position of the front baffle in the longitudinal slide to control the front positioning of the protective cover accordingly, and perform longitudinal positioning and fix the protective cover to keep the positioning of the protective cover accurate.

[0008] Preferably, a spring is embedded in the longitudinal slide groove, one end of the spring is fixed to the outer end surface of the longitudinal slide groove, and the other end of the spring is fixed to the front end surface of the bottom protrusion of the front baffle. The free length of the spring is greater than the length of the longitudinal slide groove. When the fastening bolt of the front baffle is loosened, the compressed spring pushes the front baffle to move inward and press against the protective cover, and cooperates with the rear baffle to longitudinally position and fix the protective cover. The compressed spring pushes the front baffle backward to make the front baffle press against the protective cover.

[0009] Preferably, the punching device also includes a crimping assembly, which is respectively arranged at both ends of the base plate. The crimping assembly includes a crimping bolt, a retaining spring, a crimping plate and a crimping nut. The crimping bolt is vertically fixed to the surface of the base plate. The crimping plate is provided with an opening and is sleeved on the crimping bolt through the opening. The crimping nut is located above the pressure plate and screwed on the crimping bolt. The retaining spring is sleeved on the crimping bolt and located below the crimping plate. The free length of the retaining spring is greater than the length of the crimping bolt. The crimping plate can rotate along the crimping bolt and press against the top of the protective cover. The crimping bolt rotates downward and tightens the crimping plate to vertically position and fix the protective cover. The compressed retaining spring pushes the crimping plate upward to make the crimping plate contact the crimping nut.

[0010] The beneficial effects of the utility model are: a punching machine is used to perform punching operations on the protective cover, effectively improving the efficiency and quality of the punching; at the same time, the positioning assembly can flexibly adjust the positions of the left baffle, the right baffle and the front baffle through the horizontal slide and the longitudinal slide according to the size of the protective cover, thereby enclosing a placement area for the protective cover and maintaining accurate positioning of the punching operation of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present utility model.

[0012] Figure 2 yes Figure 1 Exploded view of the structure.

[0013] Figure 3 It is a schematic diagram of the use of the present utility model.

[0014] In the figure, 1. Protective cover, 2. Upper die, 21. Upper die cavity, 22. Punch, 23. Positioning hole, 3. Lower die, 31. Positioning column, 4. Positioning assembly, 41. Base plate, 411. Through hole, 412. Horizontal slide, 413. Longitudinal slide, 42. Left baffle, 43. Right baffle, 44. Rear baffle, 45. Front baffle, 46. Positioning bolt. 5. Punch slide, 6. Work table, 7. Pressing assembly, 71. Pressing bolt, 72. Retaining ring, 73. Pressing plate, 74. Pressing nut. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0016] Embodiment: A circuit breaker terminal shield punching device of this embodiment is installed on a punching machine and is used for punching the shield 1. Figure 1 and Figure 2As shown, the punching device includes an upper die 2, a lower die 3, a positioning assembly 4 and a crimping assembly 7, wherein the upper die is mounted on the punch slide 5 and moves up and down with the punch slide, an upper die cavity 21 is designed in the center of the upper die, and positioning holes 23 are symmetrically designed at both ends of the upper die, and a punch 22 is embedded and fixed in the upper die cavity; the lower die is mounted on the working table 6 of the punch, and a die hole is designed on the lower die, the die hole corresponds to the punch and accommodates the punch, and positioning columns 31 corresponding to the upper die positioning holes and perpendicular to the lower die surface are designed at both ends of the die hole, the upper die is sleeved on the lower die positioning columns through the positioning holes and moves up and down along the positioning columns; the positioning assembly includes a bottom plate 41 and left stop bars 42, right stop bars 43, rear stop bars 44, and front stop bars 45 mounted on the bottom plate The bottom plate is fixed on the workbench, and a through hole 411 is designed on the bottom plate corresponding to the die hole of the lower template and used for the punching material to fall. The left baffle, right baffle, rear baffle and front baffle are enclosed with the bottom plate to form the placement area of ​​the above-mentioned protective cover, wherein the rear baffle is fixedly installed on the rear side of the bottom plate, and the bottom plate surfaces at the left and right ends of the through hole are respectively designed with horizontal slides 412, and the bottom plate surface at the front end of the through hole is designed with a longitudinal slide 413. The cross-sections of the horizontal slide and the longitudinal slide are both inverted T-shaped structures. The bottom surface of the above-mentioned left baffle or right baffle is designed with an inverted T-shaped protrusion that is integrated with the left baffle or right baffle and cooperates with the above-mentioned horizontal slide. The left baffle or right baffle is embedded in the horizontal slide through the inverted T-shaped protrusion and moves horizontally along the horizontal slide. The upper surface of the left baffle or right baffle The upper surface of the front baffle is provided with a vertical screw hole that passes through the left baffle or the right baffle, and a positioning bolt 46 is screwed in the screw hole. The head of the positioning bolt passes through the left baffle or the right baffle and presses against the bottom surface of the horizontal slide to fix the left baffle or the right baffle. The bottom surface of the above-mentioned front baffle is designed with an inverted T-shaped protrusion that is an integral structure with the front baffle and cooperates with the longitudinal slide. The front baffle is embedded in the longitudinal slide through the inverted T-shaped protrusion and moves horizontally along the longitudinal slide. The upper surface of the front baffle is designed with a vertical screw hole that passes through the front baffle, and a positioning bolt is screwed in the screw hole. The head of the positioning bolt passes through the front baffle and presses against the bottom surface of the longitudinal slide to fix the front baffle. A spring is embedded in the longitudinal slide. One end of the spring is fixed to the outer end surface of the longitudinal slide, and the other end of the spring is fixed to the front end surface of the protrusion at the bottom of the front baffle. The free length of the spring The clamping nut 74 is tightened to the bottom of the mold and the clamping bolt 71 is tightened to the top of the mold and the clamping nut 74 is tightened to the bottom of the mold.

[0017] When using, Figure 3 As shown, first select the appropriate punch and lower template, move and adjust the specific positions of the left and right baffles according to the size of the protective cover to be processed, and tighten the positioning bolts to position and fix them in the horizontal dimension. Then loosen the positioning bolts on the front baffle, pull the front baffle forward, and then put the protective cover into the processing area. Loosen the front baffle, and the front baffle moves backward along the longitudinal slide under the action of the compression spring, pressing against the protective cover. Tighten the positioning bolts of the front baffle, position and fix it in the longitudinal dimension, and then put the bottom The crimping plates in the crimping assemblies on both sides of the plate are rotated to the top of the protective cover, and the crimping nuts are tightened downward to make the crimping plates rest against and press the protective cover, and position and fix it in the vertical dimension. Finally, the upper die is controlled to fall, and the punch of the upper die impacts downward to punch the bottom surface of the protective cover. When the punching is completed, the upper die is reset and moved upward, and then the crimping nuts of the crimping assembly are loosened in the reverse direction, the crimping plate is removed, the front baffle positioning bolts are loosened, the front baffle is pulled forward, and the processed protective cover is taken out to prepare for the subsequent punching of the protective cover.

[0018] In the description of the present invention, technical terms such as "upper", "lower", "front", "back", "left", "right", "longitudinal", "horizontal", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing and understanding the technical solutions of the present invention. The above description does not limit the present invention, and the present invention is not limited to the examples described above. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should be deemed to be within the scope of protection of the present invention.

Claims

1. A circuit breaker terminal shield punching device, provided on a punching machine, for punching a cable shield (1), characterized in that: The punching device comprises an upper die (2), a lower die (3) and a positioning assembly (4); the upper die is fixed on a punch slide (5) and moves up and down with the punch slide; an upper die cavity (21) is provided in the center of the upper die; a punch (22) is embedded and fixed in the upper die cavity; the lower die is fixed on a working table (6) of the punch; a die hole is provided on the surface of the lower die; the die hole corresponds to the punch and accommodates the punch; the positioning assembly is provided on the working table; and the cable protective cover is fixed on the positioning assembly.

2. A circuit breaker terminal shield punching device according to claim 1, characterized in that: Positioning holes (23) are respectively provided at both ends of the upper die (2), and positioning columns (31) corresponding to the positioning holes and perpendicular to the surface of the lower die are provided on the surface of the lower die (3). The upper die is sleeved on the positioning columns of the lower die through the positioning holes and moves up and down along the positioning columns.

3. A circuit breaker terminal shield punching device according to claim 1 or 2, characterized in that: The positioning assembly (4) includes a bottom plate (41) and a left baffle (42), a right baffle (43), a rear baffle (44), and a front baffle (45) placed on the bottom plate. The bottom plate is fixed on the work table (6). A through hole (411) that matches the above-mentioned mold hole is provided on the bottom plate. The left baffle, the right baffle, the rear baffle and the front baffle are enclosed with the bottom plate to form a placement area for the above-mentioned cable protective cover. The above-mentioned rear baffle is fixed on the rear side of the bottom plate. The bottom plates located at the left and right ends of the through hole are respectively provided with horizontal slides (412). The bottom plate located at the front end of the through hole is provided with a longitudinal slide (413). The cross sections of the horizontal slide and the longitudinal slide are both in an inverted T-shaped structure. The bottom surface of the above-mentioned left baffle or right baffle is provided with An inverted T-shaped protrusion matched with the above-mentioned horizontal slide, the left baffle or the right baffle is embedded in the horizontal slide through the protrusion and moves horizontally along the horizontal slide, the upper surface of the left baffle or the right baffle is provided with a vertical screw hole passing through the left baffle or the right baffle, a positioning bolt (46) is screwed in the screw hole, the head of the positioning bolt passes through the left baffle or the right baffle and presses against the bottom surface of the horizontal slide and fixes the left baffle or the right baffle, the bottom surface of the above-mentioned front baffle is provided with an inverted T-shaped protrusion matched with the longitudinal slide, the front baffle is embedded in the longitudinal slide through the protrusion and moves horizontally along the longitudinal slide, the upper surface of the front baffle is provided with a vertical screw hole passing through the front baffle, a positioning bolt is screwed in the screw hole, the head of the positioning bolt passes through the front baffle and presses against the bottom surface of the longitudinal groove and fixes the front baffle.

4. A circuit breaker terminal shield punching device according to claim 3, characterized in that: A spring is embedded in the longitudinal slideway (413), one end of the spring is fixed to the outer end surface of the longitudinal slideway, and the other end of the spring is fixed to the outer end surface of the bottom protrusion of the front stop bar (45), and the free length of the spring is greater than the length of the longitudinal slideway.

5. The circuit breaker terminal shield punching device according to claim 1, characterized in that: The punching device further includes a crimping assembly (7), which is respectively arranged at both ends of the base plate (41), and includes a crimping bolt (71), a retaining spring (72), a crimping plate (73) and a crimping nut (74). The crimping bolt is vertically fixed to the surface of the base plate, the crimping plate is provided with an opening and is sleeved on the crimping bolt through the opening, the crimping nut is located above the pressure plate and is screwed to the crimping bolt, the retaining spring is sleeved on the crimping bolt and is located below the crimping plate, and the free length of the retaining spring is greater than the length of the crimping bolt.

Images