CN209775712U - Explosion chamber insulating paperboard stamping forming die - Google Patents
Explosion chamber insulating paperboard stamping forming die Download PDFInfo
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- CN209775712U CN209775712U CN201920443338.2U CN201920443338U CN209775712U CN 209775712 U CN209775712 U CN 209775712U CN 201920443338 U CN201920443338 U CN 201920443338U CN 209775712 U CN209775712 U CN 209775712U
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Abstract
The utility model discloses an explosion chamber insulating paperboard punch forming die, which relates to the technical field of high-voltage circuit breaker part manufacturing, and comprises an upper die and a lower die, wherein the upper die comprises a convex die plate and a movable ejector block, the lower die comprises a concave die plate and a movable stripping block, the movable ejector block and the movable stripping block are respectively movably embedded in the convex die plate and the concave die plate and are opposite to each other, the upper surface of the movable stripping block is used as the bottom surface of a cavity of the concave die plate, and the upper surface of the movable stripping block is provided with a convex edge for punching a sheet material into creases; when the die is closed and stamped, the convex die plate and the concave die plate clamp the plate together, the movable jacking block protrudes relative to the parting surface of the convex die plate and is embedded into the cavity of the concave die plate so as to stamp the appearance of a product, and the movable jacking block and the movable stripping block are matched with each other to extrude the product so as to form a pre-processing crease on the product. The utility model discloses make insulated paper board's crease and appearance once take shape, guarantee crease precision and appearance precision, improve production efficiency, promote enterprise competitiveness.
Description
Technical Field
The utility model relates to a technical field is made to the high voltage circuit breaker part, especially relates to an explosion chamber insulating board stamping forming mould.
Background
The vacuum arc extinguish chamber insulating paperboard part is a part in a high-voltage circuit breaker arc extinguish chamber, and the final form of the part is in a bending shape, so that a crease needs to be preprocessed in the production and processing process to ensure that the assembly of bending is carried out along the bending part in the follow-up installation process.
At present, the stamping process of a progressive die is adopted, and in the actual production process, positioning errors are easily caused by accumulated burrs or improper pushing of feeding personnel, so that parts cannot meet the precision requirements of creases and shapes, and the yield is low. A stamping forming die is planned to be developed, so that the processing crease precision and the product appearance precision are guaranteed, the production efficiency is improved, and the enterprise competitiveness is improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an explosion chamber insulated paper board stamping forming mould makes explosion chamber insulated paper board's crease and appearance once take shape, guarantees explosion chamber insulated paper board processing crease precision and appearance precision, improves production efficiency, promotes enterprise competitiveness.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
An arc extinguish chamber insulating paperboard punch forming die comprises an upper die and a lower die, wherein the upper die comprises a convex die plate and a movable stripping block, the lower die comprises a concave die plate and a movable stripping block, the movable stripping block and the movable stripping block are respectively and movably embedded in the convex die plate and the concave die plate and are opposite to each other, the upper surface of the movable stripping block is used as the bottom surface of a cavity of the concave die plate, and a convex edge for punching a sheet material into a crease is arranged on the upper surface of the movable stripping block; when the die is closed and stamped, the convex die plate and the concave die plate clamp the plate together, the movable jacking block protrudes relative to the parting surface of the convex die plate and is embedded into the cavity of the concave die plate so as to stamp the appearance of a product, and the movable jacking block and the movable stripping block are matched with each other to extrude the product so as to form a pre-processing crease on the product.
The utility model discloses can also further perfect through following technical measure:
Furthermore, a stripping mechanism is fixedly connected below the movable stripping block and comprises an elastic supporting piece; the movable stripping block moves downwards during die assembly and stamping, and the elastic supporting piece is compressed; when the die is opened, the elastic supporting piece rebounds, so that the movable stripping block moves upwards under the action of the stripping mechanism and pushes the product out of the cavity of the concave die plate.
Further, the stripping mechanism further comprises an ejector pin, an ejector pin fixing plate and an ejector pin pushing block, the ejector pin fixing plate is fixedly connected with the concave template, the ejector pin fixing plate is located below the concave template, an ejector pin hole is formed in the ejector pin fixing plate, the upper end of the ejector pin penetrates through the ejector pin fixing plate and the concave template to support the movable stripping block, the lower end of the ejector pin abuts against the ejector pin pushing block, and the elastic supporting piece is located below the ejector pin pushing block and supports the ejector pin pushing block.
Furthermore, the elastic supporting piece is a spring, the ejector pin pushing block is provided with a through hole, and a screw sequentially penetrates through the spring and the through hole of the ejector pin pushing block and then is locked with the ejector pin fixing plate.
furthermore, the concave template is provided with a containing groove, the movable stripping block is positioned in the containing groove, the depth of the containing groove is greater than the height of the movable stripping block, the movable stripping block can move up and down in the containing groove, and during die assembly punching, the side wall of the containing groove and the upper surface of the movable stripping block enclose a space formed by the side wall of the containing groove and the upper surface of the movable stripping block to be a cavity of the concave template.
Further, the upper surface of the movable stripping block is basically flush with the upper surface of the concave template in the mold opening state.
Furthermore, the lower die is provided with a telescopic positioning pin, and the top end of the positioning pin protrudes out of the upper surface of the concave die plate in a die opening state and is used for positioning and conveying the plate to a stamping station.
Furthermore, a stepped through hole is formed in the upper surface of the lower surface of the female die plate, the positioning pin is positioned in the stepped through hole, a mounting hole communicated with the stepped through hole is formed in the ejector plate, a positioning spring is arranged in the mounting hole and upwards pushes against the positioning pin, and a positioning protrusion is arranged on the positioning pin along the circumferential direction; in the die opening state, the positioning spring pushes the positioning pin to move upwards until the positioning protrusion abuts against the step surface of the step through hole, so that the top end of the positioning pin protrudes out of the upper surface of the concave die plate in a limited manner; when the die is closed, the top end of the positioning pin is pressed down by the concave die plate to be folded in the convex die plate.
The upper die further comprises a guide pillar fixing plate and a panel, the guide pillar fixing plate is fixedly connected with the panel, a through groove for the movable ejector block to pass through is formed in the convex die plate, the lower end of the movable ejector block penetrates through the through groove, the upper end of the movable ejector block is fixed by the guide pillar fixing plate and the panel, and an elastic reset piece is arranged between the guide pillar fixing plate and the convex die plate; when the die is closed and stamped, the guide post fixing plate compresses the elastic reset piece, so that the gap between the guide post fixing plate and the convex die plate is reduced, and the movable material pushing block protrudes relative to the parting surface of the convex die plate and extends into a cavity of the concave die plate; after the die is opened, the elastic reset piece rebounds, and the lower end of the movable ejection block is collected in the convex die plate.
Furthermore, the elastic reset piece is made of high-strength rubber, through holes are formed in the elastic reset piece and the guide pillar fixing plate, a screw sequentially penetrates through the through hole in the guide pillar fixing plate and the through hole in the elastic reset piece and then is locked with the convex template, and a yielding hole for the screw head to move up and down is formed in the panel.
Compared with the prior art, the utility model has the advantages of it is following:
(1) by adopting the composite stamping die, the convex die plate and the concave die plate firstly fix the insulating paperboard during stamping, and then the product appearance is stamped, so that the product appearance precision is ensured. The product is embedded into the cavity of the concave template, the product is positioned by the cavity, and then a pre-processing crease is formed on the product, so that one-time forming of the crease and the appearance is realized on the same station, and the product precision is improved.
(2) the composite stamping die has the advantages of high material utilization rate and low production cost, reduces the labor intensity and improves the working efficiency.
(3) Still set up in further improvement scheme and taken off the material mechanism, it is smooth and easy to guarantee to take off the material, improves production efficiency.
Drawings
FIG. 1 is a schematic perspective view of an arc extinguish chamber insulating paperboard punch forming die;
FIG. 2 is a top view of the lower die;
3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3; 3
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a top view of an arc extinguish chamber insulating paperboard punch forming die;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5;
FIG. 7 is a schematic perspective view of a movable stripper block;
Fig. 8 is a schematic perspective view of a removable ejector block.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, an arc extinguish chamber insulating paperboard punch forming die comprises an upper die 1 and a lower die 2, wherein the upper die 1 comprises a convex die plate 101 and a movable ejector block 102, the lower die 2 comprises a concave die plate 201 and a movable stripping block 202, the movable ejector block 102 and the movable stripping block 202 are respectively and movably embedded in the convex die plate 101 and the concave die plate 201 and are opposite to each other, the upper surface of the movable stripping block 202 is used as the bottom surface of a cavity of the concave die plate 201, and the upper surface of the movable stripping block 202 is provided with a convex rib 2021 for stamping a plate material into a crease; when the die is closed and the die plate 101 and the cavity plate 201 clamp the plate together, the movable ejector block 102 protrudes relative to the parting surface of the die plate 101 and is embedded into the cavity of the cavity plate 201 so as to punch the product appearance, and the movable ejector block 102 and the movable stripper block 202 cooperate with each other to extrude the product so as to form a pre-processing crease on the product.
the utility model discloses the scheme is through when the punching press protruding template 101 and die board 201 fix insulating board's panel earlier, then the product appearance is gone out in the punching press, ensures product appearance precision, and the product is embedded into die cavity of die board 201 and is fixed a position, then forms preprocessing crease on the product, has realized the one shot forming of crease and appearance, improves the product precision.
referring to fig. 2 to 4, the cavity plate 201 is provided with a receiving groove 2011, the movable stripping block 202 is located in the receiving groove 2011, the depth of the receiving groove 2011 is greater than the height of the movable stripping block 202, and the movable stripping block 202 can move up and down in the receiving groove 2011. For convenience of manufacture, the receiving groove 2011 is formed as a through groove having both upper and lower ends penetrating therethrough. When the dies are closed and stamped, a space defined by the side wall of the containing groove 2011 and the upper surface of the movable stripper block 202 is a cavity of the cavity plate 201.
Preferably, the upper surface of the movable stripper block 202 is substantially flush with the upper surface of the cavity plate 201 in the mold opening state, so that the insulating paperboard to be punched can be placed more smoothly, and the shape error caused in the punching process is reduced. Specifically, as shown in fig. 7, the movable stripping block 202 has a shape, a separation limit boss 2022 is disposed on a side surface of a lower end of the movable stripping block 202, a step surface matched with the separation limit boss 2022 is disposed in the accommodating groove 2011 of the cavity plate 201, the movable stripping block 202 moves upward until the separation limit boss 2022 abuts against the step surface of the accommodating groove 2011, and then the movable stripping block 202 stops moving, and an upper surface of the movable stripping block 202 is substantially flush with an upper surface of the cavity plate 201.
As an improvement, as shown in fig. 1, 3 and 6, in order to more conveniently and effectively take out the insulation paperboard from the mold, a stripping mechanism is fixedly connected below the movable stripping block 202, and the stripping mechanism includes an elastic support 203. The movable stripper block 202 moves downward during the matched die stamping and compresses the resilient support 203. When the mold is opened, the elastic support piece 203 rebounds, so that the movable stripping block 202 moves upwards under the action of the stripping mechanism and pushes the product out of the cavity plate 201, and smooth stripping is ensured. The elastic support member 203 of the present embodiment may include, but is not limited to, a spring, a rubber block, a high-strength rubber block, and other common elastic members, and the elastic support member 203 of the present embodiment is preferably a spring.
More specifically, as shown in fig. 1 to 4 and 6, the stripping mechanism further includes a thimble 204, a thimble fixing plate 205, and a thimble pushing block 206, the thimble fixing plate 205 is fixedly connected to the cavity plate 201, the thimble fixing plate 205 is located below the cavity plate 201, a thimble hole is formed in the thimble fixing plate 205, an upper end of the thimble 204 passes through the thimble fixing plate 205 to support the movable stripping block 202, a lower end of the thimble 204 abuts against the thimble pushing block 206, and the elastic support 203 is located below the thimble pushing block 206 and supports the thimble pushing block 206.
As shown in fig. 6, a through hole is formed on the ejector pin pushing block 206, a screw sequentially passes through the spring and the through hole of the ejector pin pushing block 206 and then is locked with the ejector pin fixing plate 205, when the mold is opened, the ejector pin pushing block 206 moves upward along the screw under the resilience force of the spring, the ejector pin pushing block 206 pushes the ejector pin 204 to move upward, the ejector pin 204 jacks up the movable stripper block 202, and the movable stripper block 202 pushes the product upward. The spring is a consumable product, and in this embodiment, the spring is disposed below the thimble fixing plate 205 instead of being fixed in the thimble fixing plate 205 or the cavity plate 201, so as to facilitate later maintenance and replacement.
Preferably, the ejector pin push block 206 is shaped like a round cake, the through hole on the ejector pin push block 206 is a central hole of the ejector pin push block 206, the central hole of the ejector pin push block 206 is coaxial with the central hole of the spring, and the central axis of the spring and the center of gravity of the movable stripping block 202 are located on the same vertical line, so that the spring keeps the thrust direction of the ejector pin push block 206 and the thrust direction of the movable stripping block 202 vertically upward, the movable stripping block 202 is more stable when jacking up a product, and the product is prevented from deviating and being clamped in the cavity of the cavity plate 201 to be not beneficial to being taken out.
As shown in fig. 1 to 4, a telescopic positioning pin 207 is disposed on the lower die 2, and a top end of the positioning pin 207 protrudes from an upper surface of the cavity plate 201 in a die opening state and is used for positioning a sheet material conveyed to a punching station. Specifically, as shown in fig. 4, a stepped through hole 2012 is formed in the cavity plate 201 from the lower surface to the upper surface thereof, the positioning pin 207 is located in the stepped through hole 2012, an installation hole 2051 communicated with the stepped through hole 2012 is formed in the thimble fixing plate 205, a positioning spring 208 is arranged in the installation hole 2051, the positioning spring 208 pushes the positioning pin 207 upwards, and the positioning pin 207 is provided with a positioning protrusion 2071 along the circumferential direction; in the mold opening state, the positioning spring 208 pushes the positioning pin 207 to move upwards until the positioning protrusion 2071 abuts against the step surface of the step through hole, so that the top end of the positioning pin 207 protrudes out of the upper surface of the cavity plate 201 to a limited extent; when the mold is closed, the top end of the positioning pin 207 is pressed down by the cavity plate 201 to be folded in the cavity plate 101.
In this embodiment, for assembly convenience, as shown in fig. 4, mounting hole 2051 of needle fixing plate 205 has two ends penetrating therethrough, and the lower end of mounting hole 2051 is provided with an internal thread, and countersunk head screw 209 is used to close the lower end of the mounting hole to prevent positioning spring 208 from falling out of the mounting hole. The upper end of the positioning spring 208 is sleeved on the lower end of the positioning pin 207 so that the positioning spring 208 and the positioning pin 207 are coaxial, thereby ensuring that the up-and-down movement process of the positioning pin 207 is smoother.
As shown in fig. 1, 5 and 6, the upper die 1 further includes a guide pillar fixing plate 103 and a panel 104, the guide pillar fixing plate 103 and the panel 104 are fixedly connected by screws, a through groove for the movable ejector block 102 to pass through is formed on the male die plate 101, the lower end of the movable ejector block 102 is inserted into the through groove, the upper end of the movable ejector block 102 is fixed by the guide pillar fixing plate 103 and the panel 104, and an elastic reset piece 105 is arranged between the guide pillar fixing plate 103 and the male die plate 101; during the mold closing and punching, the guide post fixing plate 103 compresses the elastic restoring member 105, so that the gap between the guide post fixing plate 103 and the male mold plate 101 is reduced, and the movable ejector block 102 protrudes relative to the parting surface of the male mold plate 101 to extend into the cavity of the female mold plate 201. After the mold is opened, the elastic reset piece 105 rebounds, and the lower end of the movable ejector block 102 is folded in the convex mold plate 101, so that the sheet material of the insulating paper board is prevented from accidentally colliding with the movable ejector block during feeding, and feeding is facilitated.
the shape of the movable ejector block 102 is as shown in fig. 8, the side surface of the upper end of the movable ejector block 102 is provided with an ejector limit boss 1021, the guide post fixing plate 103 is provided with a through groove for accommodating the upper end of the movable ejector block 102, the side wall of the through groove is provided with a step surface, and the ejector limit boss 1021 of the movable ejector block 102 is clamped on the step surface to prevent the movable ejector block 102 from falling from the through groove of the guide post fixing plate 103. The panel 104 is fixedly connected to the upper portion of the guide post fixing plate 103, and the upper end of the movable ejector block 102 abuts against the panel 104 to prevent the panel from moving up and down.
The elastic restoring member 105 is made of high-strength rubber, as shown in fig. 6, the elastic restoring member 105 and the guide post fixing plate 103 are both provided with through holes, a screw sequentially passes through the through hole of the guide post fixing plate 103 and the through hole of the elastic restoring member 105 and then is locked with the male die plate 101, and the face plate 104 is provided with a abdicating hole 1041 for the screw head to move up and down. A die handle 106 is fixedly assembled at the upper end of the panel 104, and the upper die 1 is assembled on the punching machine through the die handle 106. The upper die 1 further comprises a guide post 107, and the lower die 2 is provided with a guide post hole 209 for the guide post 107 to slide, as shown in fig. 2.
The utility model discloses a theory of operation: during operation, a plate material of the insulating paper board is conveyed to a punching station by abutting against the positioning pin 207, when the upper die 1 punches downwards, the convex die plate 101 and the concave die plate 201 press the plate material to prevent the position of the plate material from moving, then the movable ejector block 102 punches the plate material on the concave die plate 201, the movable ejector block 102 punches the product shape and pushes the product into a cavity of the concave die plate 201 along with the continuous downward pressing of the upper die 1, and then the movable stripping block 202 punches a pre-processing crease of the product. During the process of pressing down the lower die 2, the movable stripper block 202 moves down and the spring of the stripping mechanism is continuously pressed to the end of the stroke.
When the mold is opened, the upper mold 1 moves upwards, the spring in the stripping mechanism rebounds and pushes the thimble push block 206 and the thimble 204 upwards, the thimble 204 pushes the movable stripping block 202, the movable stripping block 202 pushes the product out of the cavity, and finally the product is blown to the product box by the air gun. After the upper die 1 reaches the top point, the elastic glue rebounds and pushes the convex die plate 101 back to the initial position, and the lower end of the movable ejector block 102 contracts back into the convex die plate 101, so that the whole blanking process is completed. And feeding the plate material into the next step pitch, and performing the next blanking process in a reciprocating manner.
Compare with the current general continuous stamping die of explosion chamber insulated paper board, the explosion chamber insulated paper board stamping forming mould of this design has following advantage:
(1) Can meet the one-time forming of product crease and appearance, and improve the product precision.
(2) By adopting the composite stamping die, the utilization rate of the insulating paperboard plate is high, the production cost is low, and the production efficiency is high.
The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.
Claims (10)
1. The utility model provides an explosion chamber insulating paper board stamping forming mould, includes mould and lower mould, its characterized in that: the upper die comprises a convex die plate and a movable material ejecting block, the lower die comprises a concave die plate and a movable material stripping block, the movable material ejecting block and the movable material stripping block are respectively and movably embedded in the convex die plate and the concave die plate and are opposite to each other, the upper surface of the movable material stripping block is used as the bottom surface of a cavity of the concave die plate, and the upper surface of the movable material stripping block is provided with a convex edge for stamping a plate material into a crease; when the die is closed and stamped, the convex die plate and the concave die plate clamp the plate together, the movable jacking block protrudes relative to the parting surface of the convex die plate and is embedded into the cavity of the concave die plate so as to stamp the appearance of a product, and the movable jacking block and the movable stripping block are matched with each other to extrude the product so as to form a pre-processing crease on the product.
2. The arc extinguish chamber insulating paper board punch forming die according to claim 1, wherein: a stripping mechanism is fixedly connected below the movable stripping block and comprises an elastic supporting piece; the movable stripping block moves downwards during die assembly and stamping, and the elastic supporting piece is compressed; when the die is opened, the elastic supporting piece rebounds, so that the movable stripping block moves upwards under the action of the stripping mechanism and pushes the product out of the cavity of the concave die plate.
3. The arc extinguish chamber insulating paper board punch forming die according to claim 2, wherein: the stripping mechanism further comprises a thimble, a thimble fixing plate and a thimble push block, the thimble fixing plate is fixedly connected with the concave template, the thimble fixing plate is located below the concave template, a thimble hole is formed in the thimble fixing plate, the upper end of the thimble penetrates through the thimble fixing plate to support the movable stripping block, the lower end of the thimble is abutted to the thimble push block, and the elastic support is located below the thimble push block and supports the thimble push block.
4. the arc extinguish chamber insulating paper board punch forming die according to claim 3, wherein: the elastic supporting piece is a spring, the ejector pin pushing block is provided with a through hole, and a screw penetrates through the spring and the through hole of the ejector pin pushing block in sequence and then is locked with the ejector pin fixing plate.
5. The arc extinguish chamber insulating paper board punch forming die according to claim 1, wherein: the die plate is provided with a containing groove, the movable stripping block is positioned in the containing groove, the depth of the containing groove is greater than the height of the movable stripping block, the movable stripping block can move up and down in the containing groove, and during die assembly punching, a cavity of the die plate is defined by the side wall of the containing groove and the upper surface of the movable stripping block.
6. The arc extinguish chamber insulating paper board punch forming die as set forth in claim 5, wherein: the upper surface of the movable stripping block is basically flush with the upper surface of the concave template in the mold opening state.
7. The arc extinguish chamber insulating paper board punch forming die according to claim 1, wherein: the lower die is provided with a telescopic positioning pin, and the top end of the positioning pin protrudes out of the upper surface of the concave die plate in a die opening state and is used for positioning and conveying plates to a stamping station.
8. The arc extinguish chamber insulating paper board punch forming die according to claim 3, wherein: the lower surface of the concave template is provided with a stepped through hole, the positioning pin is positioned in the stepped through hole, the thimble fixing plate is provided with a mounting hole communicated with the stepped through hole, a positioning spring is arranged in the mounting hole and upwards supports against the positioning pin, and the positioning pin is circumferentially provided with a positioning bulge; in the die opening state, the positioning spring pushes the positioning pin to move upwards until the positioning protrusion abuts against the step surface of the step through hole, so that the top end of the positioning pin protrudes out of the upper surface of the concave die plate in a limited manner; when the die is closed, the top end of the positioning pin is pressed down by the concave die plate to be folded in the convex die plate.
9. The arc extinguish chamber insulating paper board punch forming die according to claim 1, wherein: the upper die also comprises a guide pillar fixing plate and a panel, the guide pillar fixing plate is fixedly connected with the panel, the convex die plate is provided with a through groove for the movable ejector block to pass through, the lower end of the movable ejector block penetrates into the through groove, the upper end of the movable ejector block is fixed by the guide pillar fixing plate and the panel, and an elastic reset piece is arranged between the guide pillar fixing plate and the convex die plate; when the die is closed and stamped, the guide post fixing plate compresses the elastic reset piece, so that the gap between the guide post fixing plate and the convex die plate is reduced, and the movable material pushing block protrudes relative to the parting surface of the convex die plate and extends into a cavity of the concave die plate; after the die is opened, the elastic reset piece rebounds, and the lower end of the movable ejection block is collected in the convex die plate.
10. The arc extinguish chamber insulating paper board punch forming die according to claim 9, wherein: the elastic reset piece is made of high-strength rubber, the elastic reset piece and the guide pillar fixing plate are both provided with through holes, a screw sequentially penetrates through the through hole of the guide pillar fixing plate and the through hole of the elastic reset piece and then is locked with the convex template, and the panel is provided with a abdicating hole for the screw head to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443338.2U CN209775712U (en) | 2019-04-03 | 2019-04-03 | Explosion chamber insulating paperboard stamping forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920443338.2U CN209775712U (en) | 2019-04-03 | 2019-04-03 | Explosion chamber insulating paperboard stamping forming die |
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| Publication Number | Publication Date |
|---|---|
| CN209775712U true CN209775712U (en) | 2019-12-13 |
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| CN201920443338.2U Active CN209775712U (en) | 2019-04-03 | 2019-04-03 | Explosion chamber insulating paperboard stamping forming die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843263A (en) * | 2019-12-17 | 2020-02-28 | 株洲电力机车广缘科技有限责任公司 | Slot insulating paper mould |
-
2019
- 2019-04-03 CN CN201920443338.2U patent/CN209775712U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110843263A (en) * | 2019-12-17 | 2020-02-28 | 株洲电力机车广缘科技有限责任公司 | Slot insulating paper mould |
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