CN219786267U - Production equipment of explosion-proof device for closed switch cabinet and closed switch cabinet - Google Patents

Abstract

The utility model provides production equipment of an explosion-proof device for a closed switch cabinet and the closed switch cabinet, wherein the production equipment comprises: the first stamping assembly comprises a first punch platform and a first punch seat, the first punch platform is provided with a plurality of first punches, the first punch seat is used for bearing a first metal sheet and is provided with first holes matched with the first punches, and the first metal sheet can form a second metal sheet with first stamping toothed edges through the matching of the first punches and the first punch seat; the second punching assembly comprises a second punch platform and a second punch seat, the second punch platform is provided with a plurality of second punches, the second punch seat is used for bearing a second metal sheet and is provided with second holes matched with the second punches, the second metal sheet can form a third metal sheet with second punching tooth edges through the matching of the second punches and the second punch seat, and the first punching tooth edges and the second punching tooth edges are intersected to form teeth of a toothed ring.

Description

Production equipment of explosion-proof device for closed switch cabinet and closed switch cabinet

Technical Field

The utility model relates to the field of switch equipment, in particular to production equipment for an explosion-proof device of a closed switch cabinet and the closed switch cabinet.

Background

The closed type switch cabinet (Enclosed Switchgear) is a switch cabinet in which all electric elements except an incoming line and an outgoing line are completely installed in a closed grounding metal shell. The explosion-proof device is a core component in the production process of the gas tank of the closed switch cabinet, when the closed gas tank encounters an internal electrical element to generate arcing, the internal pressure suddenly rises, and the explosion-proof device can burst and release the pressure to place the gas tank to burst and accident.

For example, as shown in fig. 1, the explosion-proof device 10 includes an annular body 101, an explosion-proof membrane 102 and a toothed ring 103, and in actual operation, the annular body 101, the explosion-proof membrane 102 and the toothed ring 103 are sequentially arranged from bottom to top, and are punched and fixed together to form the explosion-proof device 10. When the rupture disk 102 is subjected to gas pressure, the rupture disk 102 bulges and then contacts the sharp teeth on the ring 103 and is pierced, and gas leaks out from the location where the rupture disk 102 is broken.

Therefore, it is necessary to ensure that the ring gear 103 is sufficiently sharp to puncture the rupture disc 102 in time. In the prior art, a punch matching the shape of the toothed ring 103 is previously manufactured and punched on a metal sheet to form the toothed ring 103. However, after several hundred times of stamping, the sharp corners of the punch are rapidly severely worn, which may cause the teeth of the stamped annular body 101 to be insufficiently sharp, thereby affecting the piercing of the rupture disc 102.

Disclosure of Invention

In view of this, the utility model proposes a production apparatus for an explosion-proof device for a closed switchgear, the explosion-proof device having a toothed ring, the production apparatus comprising:

the first punching assembly comprises a first punch platform and a first punch seat, wherein the first punch platform is provided with a plurality of first punches, the first punch seat is used for bearing first metal sheets and is provided with first holes matched with the first punches, and the first metal sheets can form second metal sheets with first punching toothed edges through the matching of the first punches and the first punch seat;

the second punching assembly comprises a second punch platform and a second punch seat, the second punch platform is provided with a plurality of second punches, the second punch seat is used for bearing a second metal sheet and is provided with second holes matched with the second punches, the second metal sheet can form a third metal sheet with second punching toothed edges through the cooperation of the second punches and the second punch seat, and the first punching toothed edges and the second punching toothed edges are intersected to form teeth of the toothed ring.

According to the production equipment, the first stamping tooth edge is formed through the stamping of the first stamping component, the second stamping tooth edge is formed through the stamping of the second stamping component, so that the teeth on the toothed ring of the explosion-proof device are formed through the two stamping procedures, the teeth cannot be affected by die abrasion, the sharpness of the tooth tip can be always ensured, and the toothed ring can be further ensured to timely puncture the explosion-proof film.

According to the production apparatus as described above, optionally, in the case where a second metal sheet having a first punched tooth side is placed on the second punch holder, the side of the second hole is cut to the adjacent first punched tooth side. Therefore, teeth on the toothed ring of the explosion-proof device can be formed only through two stamping processes, the process is simple, and the efficiency is high.

According to the production apparatus as described above, optionally, the first punches are spaced from each other and arranged in a ring shape, and each of the first punches is triangular; the second punches are spaced from each other and are annularly arranged, and each second punch is triangular. The triangle is simple in structure and easy to realize.

According to the production apparatus as described above, optionally, in a case where a second metal sheet having a first punched tooth side is placed on the second punch holder, triangular holes on the first metal sheet are alternately arranged with the second holes.

According to the production apparatus as described above, optionally, the first punch and the second punch having the triangular shape satisfy at least one of the following conditions:

at least one group of two adjacent punches has a different shape;

the two sides of at least one punch are different in length.

This will result in different shapes of the teeth that are ultimately formed, which will facilitate puncturing the burst disk at different locations for different shapes of teeth.

According to the production apparatus as described above, optionally, further comprising:

the first positioning piece is fixed on the first punch seat and is used for positioning the first metal sheet; and/or

The second locating piece is fixed on the second punch seat and used for locating the second metal sheet.

Therefore, the machining precision is more accurate, and the situation of machining failure caused by displacement is avoided.

According to the production equipment, optionally, the number of the first positioning pieces is 4, the number of the second positioning pieces is 4, and the first metal sheet and the second metal sheet are respectively positioned by being sleeved on the first positioning pieces and the second positioning pieces.

According to the production apparatus as described above, optionally, further comprising: and a transfer device connected between the first punching assembly and the second punching assembly, the transfer device being configured to transfer a first sheet metal having a first triangular aperture to the second punching assembly. Therefore, the first metal sheet can be conveyed from the first punching component to the second punching component without manual assistance, and labor is saved.

According to the production apparatus as described above, optionally, the toothed ring includes a plurality of teeth, at least two of which differ in length. Therefore, the breakage of the explosion-proof membrane is quickened, and the quick release of the gas pressure is facilitated.

The utility model also provides an explosion-proof device, which comprises the toothed ring manufactured by the production equipment.

The utility model also provides a closed switch cabinet, which comprises the toothed ring manufactured by any one of the production equipment.

Drawings

The above and other features and advantages of the present utility model will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

fig. 1 is a schematic structural view of an explosion-proof apparatus in the prior art.

Fig. 2A is a schematic structural view of a first stamping assembly according to the present utility model.

Fig. 2B is a bottom view of the first punch platform of the first punch assembly of fig. 2A.

Fig. 2C is a top view of the first punch platform of the first punch assembly of fig. 2A.

Fig. 3A is a schematic structural view of a second stamping assembly according to the present utility model.

Fig. 3B is a bottom view of the second punch platform of the second punch assembly of fig. 3A.

Fig. 3C is a top view of a second punch platform of the second punch assembly of fig. 3A.

Fig. 4A is a structural view of a metal sheet being prefabricated.

Fig. 4B is a schematic structural view of a metal sheet with a first stamped edge.

Fig. 4C is a schematic structural view of a metal sheet having a first stamped edge and a second stamped edge.

Wherein, the reference numerals are as follows:

10-explosion-proof device

101-Ring body

102-explosion-proof membrane

103-toothed ring

2-first punch table

21-first punch

22-first guide post

3-first punch holder

31-first hole

32-first groove

4-second punch table

41-second punch

42-second guide post

5-second punch holder

51-second hole

52-second groove

6-first positioning piece

7-second positioning piece

8' -first sheet metal

8' -second metal sheet

8-third sheet metal

81-first pass stamping tooth edge

82-second pass stamping tooth edge

83-through hole

84-tooth

Detailed Description

The present utility model will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Nouns and pronouns for humans in this patent application are not limited to a particular gender.

The utility model provides production equipment for an explosion-proof device of a closed switch cabinet. The first stamping component and the second stamping component respectively stamp a metal sheet to form the metal sheet with sharp teeth, thereby ensuring that the explosion-proof membrane is pierced in time.

Fig. 2A is a side view of the first punch assembly of the present embodiment, fig. 2B is a bottom view of the first punch platform of the first punch assembly of the present embodiment, and fig. 2C is a top view of the first punch platform of the first punch assembly of the present embodiment. By bottom and top here is meant that in use, i.e. the first punch platform and the first punch platform are actually opposite. Referring to fig. 4A, the first punching assembly includes a first punch table 2 and a first punch holder 3, the first punch table 2 has a plurality of first punches 21, the first punch holder 3 is used for carrying a first metal sheet 8 'and the first punch holder 3 has a first hole 31 matched with each first punch 21, and the first metal sheet 8' can form a second metal sheet 8 "having each first punching tooth 81 as shown in fig. 4B by cooperation of the first punch 21 and the first punch holder 3. For ease of understanding, only 2 first punches 21 are shown in fig. 2A, and correspondingly, only 2 first holes 31 are shown, and the number of first punches 21 may be kept identical to that of fig. 2B.

Fig. 3A is a side view of the second punch assembly of the present embodiment, fig. 3B is a bottom view of the second punch platform of the second punch assembly of the present embodiment, and fig. 3C is a top view of the second punch platform of the second punch assembly of the present embodiment. Referring to fig. 4B, the second punching assembly includes a second punch table 4 and a second punch holder 5, the second punch table 4 having a plurality of second punches 41, the second punch holder 5 for carrying a second metal sheet 8 "and the second punch holder 5 having a second hole 51 matched with the second punch 41, the second metal sheet 8" being capable of forming a third metal sheet 8 having respective second punching teeth 82 by cooperation of the second punch 41 and the second hole 51, the first punching teeth 81 and the second punching teeth 82 intersecting to form teeth 84 of a toothed ring as shown in fig. 4C. For ease of understanding, only 2 second punches 41 are shown in fig. 3A, and correspondingly, only 2 second holes 51 are shown, the number of second punches 41 may be kept identical to that of fig. 3B.

The punch platform and punch platform cooperate with each other to punch the metal sheet sandwiched therebetween to form the teeth 84 required for the ring gear. Optionally, the first punch platform has a first guiding stud 22, the first punch platform has a first recess 32, the first guiding stud 22 is able to extend into the first recess 32 for positioning during movement of the first punch platform 2 towards the first punch platform 3, thereby aligning the positions of the first punch 21 and the first hole 31, and similarly the second punch platform has a second guiding stud 42, the second punch platform has a second recess 52, and the second guiding stud 42 is able to extend into the second recess 52 for positioning during movement of the second punch platform 4 towards the second punch platform 5, thereby aligning the positions of the second punch 41 and the second hole 51. How to realize the cooperation to punch a die table and a die holder, belongs to prior art, and is not repeated here.

For the ring gear of the rupture disc, it has several teeth, each tooth has two sides. For example, the first punch 21 and the second punch 41 each have a sharp angle by which a tooth can be formed on a metal sheet by punching the metal sheet. More specifically, the first punch 21 is triangular, and the second punch 41 is triangular. As an exemplary illustration, fig. 4A shows a sheet metal 8 'with a margin, fig. 4B shows a first punched edge 81 formed after a first punching of sheet metal 8' of fig. 4A, and fig. 4C shows a second punched edge 82 formed after a second punching of sheet metal 8 "of fig. 4B. The metal sheet 8″ shown in fig. 4B, which is punched through the first punching member, wherein the solid line represents the first-path punched tooth edge 81, which is punched through the first punching member, and the broken line represents the second-path punched tooth edge 82, which is not yet formed, which is punched through the second punching member. After the second stamping assembly stamps the sheet metal 8 "shown in fig. 4B, a twice stamped sheet metal 8 is formed as shown in fig. 4C, with the teeth 84 shown in fig. 4C being the teeth on the final ring gear. The metal sheet 8' of fig. 4A corresponds to a preformed and sufficient margin is left for the final tooth edge 84, and the main purpose is to remove the portion of the metal sheet 8 that should be hollowed out. The metal sheet 8 "of fig. 4B and the metal sheet 8 of fig. 4C are then formed in sequence, which may allow for more accurate subsequent processing. It should be noted that fig. 4B is for illustrating two sides, which is not a structure directly obtained after the first punching assembly processes the metal sheet 8' illustrated in fig. 4A. As another exemplary illustration, a rectangular metal sheet 8 is shown in fig. 4C, which may ultimately form a toothed ring by machining of the outer contour.

According to the production equipment, the first stamping toothed edge 81 is formed through stamping of the first stamping component, the second stamping toothed edge 82 is formed through stamping of the second stamping component, teeth 84 on the toothed ring of the explosion-proof device are formed through two staggered stamping procedures, the tooth tips of the teeth 84 cannot be affected by die abrasion, sharpness of the tooth tips of the teeth 84 can be always guaranteed, and then the toothed ring can timely puncture the explosion-proof film.

As an exemplary illustration, in the case where the second metal sheet 8″ having the first punched tooth 81 is placed on the second punch holder 5, the edge of the second hole 51 is cut to the adjacent first punched tooth 81, and the second punched tooth 82 is formed after the second to punched process. Thus, the teeth 84 on the ring gear of the explosion-proof device can be formed by only two pressing steps, and the steps are simple and the efficiency is high.

As an exemplary illustration, the first punches 21 are spaced apart from each other and arranged in a ring shape, and the first punches 21 are each triangular, as shown in fig. 2B; the second punches 41 are spaced apart from each other and arranged in a ring shape, and the second punches 41 are each triangular, as shown in fig. 3B. The first and second punch sides 81 and 82 can be formed smoothly by punching with the triangular punch. The triangle is simple in structure and easy to realize. Furthermore, one corner of each triangular first punch 21 is located on one ring and one corner of each triangular second punch 41 is located on one ring of the same size, which can facilitate the intersection of the first and second punch legs 81, 82. The other two corners of each punch can properly relax the requirement on the sharpness of the angle, because the other two corners are not finally formed on the toothed ring, and only the edges of the other two corners are required to form the toothed edge.

As one exemplary illustration, the triangular first punch 21 and the second punch 41 satisfy at least one of the following conditions:

at least one group of two adjacent punches has a different shape;

the two sides of at least one punch are different in length.

For example, the shape of the two adjacent punches may be different, so that the shape of the teeth eventually formed by the third metal sheet 8 may be different, or the lengths of the two sides of the punches may be different, which may be advantageous for piercing the rupture disc at different locations for different shapes of teeth.

Optionally, the production equipment further comprises a first positioning piece 6 and/or a second positioning piece 7, the first positioning piece 6 is fixed on the first punch seat 3, the second positioning piece 7 is fixed on the second punch seat 5, and the first positioning piece 6 and the second positioning piece 7 are used for positioning the metal sheet, so that the machining precision of the metal sheet is more accurate, and the situation of machining failure caused by displacement is avoided. The first positioning piece 6 and the second positioning piece 7 are positioned in a plurality of ways, for example, the grooves are formed for positioning, the metal sheets can be positioned through being sleeved on the first positioning piece 6 and the second positioning piece 7, the metal sheets can be positioned through propping against, and the metal sheets can be set according to actual needs. Optionally, the number of the first positioning pieces 6 is 4, the number of the second positioning pieces 7 is 4, and the metal sheets are sleeved on the first positioning pieces 6 and the second positioning pieces 7 to perform positioning. As an exemplary illustration, as shown in fig. 2A and 2C, the first positioning member 6 may be a positioning post, as shown in fig. 3A and 3C, and the second positioning member 7 may also be a positioning post, and correspondingly, the metal sheet has a through hole 83, so that the metal sheet may be sleeved on the positioning post for positioning, which is relatively simple in implementation and convenient for operation. The metal sheet can be placed on the positioning column manually or automatically by sleeving the positioning column, and detailed description is omitted.

Optionally, the production apparatus further comprises a transfer device connected between the first punching assembly and the second punching assembly, the transfer device being adapted to transfer the second sheet metal 8″ having the first punching edge 81 to the second punching assembly. Thus, the transfer of the second metal sheet 8″ from the first punching assembly to the second punching assembly can be completed without manual assistance, saving labor.

The utility model also provides an explosion-proof device, which comprises the toothed ring manufactured by the production equipment described in any example. Optionally, the explosion-proof device further comprises an annular body 101 and an explosion-proof membrane 102, wherein the toothed ring 103 is fixed on one surface of the annular body 101, and the explosion-proof membrane is located below the toothed ring. Optionally, for the toothed ring, the toothed ring comprises a plurality of teeth, at least two teeth have different lengths, for example, the toothed ring has 9 teeth, then 4 teeth have longer lengths, the other 5 teeth have shorter lengths, the teeth with different lengths are alternately arranged, the teeth with longer lengths are favorable for puncturing the rupture disc, the teeth with shorter lengths are favorable for further tearing the rupture disc, further the breakage of the rupture disc is accelerated, and the rapid release of gas pressure is facilitated.

The utility model also provides a closed switch cabinet, which comprises the toothed ring manufactured based on the production equipment described in any example.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. Production equipment for an explosion-proof device (10) of a closed switchgear, the explosion-proof device (10) having a toothed ring (103), characterized in that the production equipment comprises:

a first punching assembly comprising a first punch platform (2) and a first punch platform (3), wherein the first punch platform (2) is provided with a plurality of first punches (21), the first punch platform (3) is used for bearing first metal sheets (8 ') and the first punch platform (3) is provided with first holes (31) matched with the first punches (21), and the first metal sheets (8 ') can form second metal sheets (8 ') with first punching tooth edges (81) through the cooperation of the first punches (21) and the first punch platform (3);

the second punching assembly comprises a second punch platform (4) and a second punch seat (5), the second punch platform (4) is provided with a plurality of second punches (41), the second punch seat (5) is used for bearing the second metal sheets (8 ') and the second punch seat (5) is provided with second holes (51) matched with the second punches (41), the second metal sheets (8') can form third metal sheets (8) with second punching toothed edges (82) through the cooperation of the second punches (41) and the second punch seat (5), and the first punching toothed edges (81) and the second punching toothed edges (82) are intersected to form teeth of the toothed ring (103).

2. The production plant according to claim 1, characterized in that each of said first punches (21) is spaced apart from each other and arranged in a ring, said first punches (21) being triangular;

the second punches (41) are spaced from each other and are annularly arranged, and the second punches (41) are triangular.

3. The production plant according to claim 2, characterized in that the first punch (21) and the second punch (41) in triangular shape satisfy at least one of the following conditions:

at least one group of two adjacent punches has a different shape;

the two sides of at least one punch are different in length.

4. The production plant according to claim 1, characterized in that the edges of the second holes (51) are cut in the adjacent first punched toothed edge (81) with the second metal sheet (8 ") with the first punched toothed edge (81) placed on the second punch platform (5).

5. The production facility of claim 1, further comprising:

a first positioning member (6), the first positioning member (6) being fixed to the first punch holder (3), the first positioning member (6) being for positioning the first metal sheet (8'); and/or

And the second positioning piece (7), the second positioning piece (7) is fixed on the second punch seat (5), and the second positioning piece (7) is used for positioning the second metal sheet (8 ").

6. The production facility according to claim 5, wherein the number of first positioning members (6) is 4, the number of second positioning members (7) is 4, and the first metal sheet (8') and the second metal sheet (8 ") are positioned by being respectively sleeved on the first positioning members (6) and the second positioning members (7).

7. The production facility of any one of claims 1-6, further comprising:

-a transfer device connected between the first and second punching assemblies, for transferring the second metal sheet (8 ") with the first punching edge (81) to the second punching assembly.

8. The production apparatus according to claim 1, characterized in that the toothed ring (103) comprises a plurality of teeth (84), at least two teeth (84) differing in length.

9. Explosion protection device (10), characterized by comprising a toothed ring (103) made on the basis of the production equipment of any one of claims 1-8.

10. Closed switchgear, characterized in that it comprises a toothed ring (103) made on the basis of the production equipment according to any one of claims 1-8.