CN209849719U - A mould for pipe fitting throat - Google Patents
A mould for pipe fitting throat Download PDFInfo
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- CN209849719U CN209849719U CN201920167196.1U CN201920167196U CN209849719U CN 209849719 U CN209849719 U CN 209849719U CN 201920167196 U CN201920167196 U CN 201920167196U CN 209849719 U CN209849719 U CN 209849719U
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Abstract
The utility model discloses a mould for pipe fitting throat, relate to the mould technical field, solved common throat mould after accomplishing single manufacturing procedure, the pipe fitting is easy to take place the chucking with the punching press head, the pipe fitting after the chucking needs to consume a large amount of time and energy of workman when the drawing of patterns, the problem that the machining efficiency of enterprise can be reduced by a wide margin to the large batch pipe fitting of waiting to process, its technical scheme main points are, including cope match-plate pattern and lower bolster, be equipped with the mould body between cope match-plate pattern and the lower bolster, the mould body includes terrace die and die, the tip of second guide pillar is fixed in the terminal surface of terrace die; the outer wall of the second guide pillar is connected with a stripper plate in a sliding manner, and a first elastic part is arranged between the stripper plate and the male die; the end face of the male die is fixedly provided with a stamping head, the end face of the stripper plate is fixedly communicated with a die core, the stamping head is in sliding connection with the die core, and the female die is fixedly provided with a positioning socket, so that the purposes of improving the demolding efficiency after the necking processing of the pipe fittings and improving the necking processing efficiency of large-batch pipe fittings are achieved.
Description
Technical Field
The utility model relates to the technical field of mold, in particular to a mold for pipe fitting throat.
Background
In the process of processing a cylindrical pipe, necking is a forming process in which a cylindrical pipe, which is previously cut, is passed through a press apparatus to reduce the mouth thereof. In the necking processing of the straight-through pipe fitting, because the pipe fitting has a simple structure, a punching head of a punching device commonly used by workers directly extrudes the end part of the pipe fitting, and further the necking processing of the pipe fitting is completed. But the throat mould is after accomplishing single manufacturing procedure, and the pipe fitting takes place the chucking with the punching press head easily, and the pipe fitting after the chucking need expend workman's a large amount of time and energy when the drawing of patterns, and the machining efficiency of enterprise can be reduced by a wide margin to the large batch pipe fitting of treating processing, has increased the manufacturing cost of enterprise's processing and manufacturing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mould for pipe fitting throat has the drawing of patterns efficiency after both can being convenient for improve pipe fitting throat processing, still can improve the throat machining efficiency of big batch pipe fitting, and then is convenient for improve the production efficiency's of enterprise advantage.
The above technical purpose of the present invention can be achieved by the following technical solutions: a mould for pipe necking comprises an upper template and a lower template which can be close to each other, wherein a mould body is arranged between the upper template and the lower template, the mould body comprises a male mould and a female mould, the male mould is fixed on the bottom surface of the upper template, and the female mould is fixed on the top surface of the lower template; a second guide sleeve is fixed on the top surface of the lower template, a second guide pillar is connected in the second guide sleeve in a sliding mode, and the second guide pillar extends into the convex die and is connected with the convex die; the outer wall of the second guide pillar is connected with a stripper plate between the male die and the female die in a sliding manner, and a first elastic part is arranged between the stripper plate and the male die; the upper die plate is provided with a stamping head which can penetrate through the stripper plate along the vertical direction, the end side of the stripper plate facing the female die is fixedly provided with a die core for necking forming, a sliding channel which penetrates through the whole die core along the vertical direction is arranged in the die core, and the stamping head is connected in the die core in a sliding manner through the sliding channel; and a positioning socket which is matched with the mold core and used for positioning and mounting the pipe fitting is fixed in the female mold.
By adopting the technical scheme, firstly, the pipe fitting to be processed is inserted into the positioning socket; then, starting the stamping equipment, wherein the upper template is acted by external force in the vertical direction, so that the male die and the stamping head are driven to move downwards; when the stamping head moves downwards to the end part of the mold core and the pipe fitting to be inconsistent, the end part of the pipe fitting deforms along the inner wall of the mold core due to extrusion, and the stamping head continues to press downwards until the necking distance of the pipe fitting is completed, so that the necking machining process of the pipe fitting is completed. When the pipe fitting drawing of patterns, cope match-plate pattern rebound for first elastic component release elastic potential energy takes off the flitch and moves down in order to the drive, and then the pipe fitting of being convenient for loosens from the stamping head, makes the throat machining efficiency of pipe fitting obtain effectual improvement, through using this mould, both can be convenient for improve the drawing of patterns efficiency after the pipe fitting throat processing, still can improve the throat machining efficiency of big batch pipe fitting, and then be convenient for improve the production efficiency of enterprise.
The utility model discloses a further setting, be equipped with the fixing base of the symmetrical arrangement of relative punching press head on the lower bolster, alternate between the fixing base and have the guide arm perpendicular with the punching press head axial, sliding connection has two spacing sliders that are located the location socket both sides respectively and can be close to each other on the guide arm, the side that spacing slider is close to the location socket is seted up towards the U type logical groove that the location socket set up, the axial in U type logical groove is the same with the axial of punching press head; when the two limiting sliding blocks are close to each other and attached to each other, an installation through hole for clamping a pipe fitting is formed between the U-shaped through grooves.
The utility model discloses a further setting, spacing slider all is fixed with along the axial both sides face of guide arm and loads the room, is in and connects through the second elastic component between the adjacent room that loads of same direction.
Through adopting above-mentioned technical scheme, spacing slider can be used to the centre gripping and inserts the pipe fitting of treating processing of locating on the socket with the reinforcement to in the positioning accuracy who improves the pipe fitting, and then improve the yields of pipe fitting throat processing. The mounting through hole can be matched with the pipe fitting so as to improve the fitting degree of the limiting slide block and the pipe fitting. The loading chamber is used for placing a second elastic part, and the second elastic part can be used for improving the pressure of reinforcing and clamping the pipe fitting by the limiting slide block, so that the pipe fitting is not easy to deviate in the machining process, and the machining precision of the pipe fitting is convenient to improve. During the installation, at first drive two limit slide blocks and keep away from each other, then insert the pipe fitting installation and locate on the location socket, loosen limit slide block immediately, the U type on the limit slide block leads to the groove and contradicts respectively in the both sides wall of pipe fitting this moment, and then accomplishes the fixed of pipe fitting.
The utility model discloses a further setting, the second elastic component is at least one along vertical direction circumference equipartition setting and quantity.
Through adopting above-mentioned technical scheme, can be according to the wall thickness and the diameter of pipe fitting, correspondingly select the quantity that sets up of second elastic component, through the quantity that sets up of second elastic component in order to realize pressing from both sides the regulation of tight pipe fitting pressure to the installation and the dismantlement of pipe fitting are convenient for, and then are convenient for improve the machining efficiency of pipe fitting.
The utility model discloses a further setting, the relative punching press of guide arm first symmetry sets up and quantity is two at least.
Through adopting above-mentioned technical scheme, the guide arm can be convenient for spacing slider's removal, makes spacing slider's removal more smooth level and smooth to the installation and the dismantlement of pipe fitting are convenient for, and then are convenient for improve the machining efficiency of pipe fitting.
The utility model discloses a further setting, take off the flitch and be fixed with two at least extension rods that can supply spacing slider to contradict towards the relative punching press of terminal surface symmetry of die, the extension rod is located spacing slider's both sides respectively, sets up the extension hole that supplies the extension rod to penetrate on the lower bolster.
Through adopting above-mentioned technical scheme, when needs installation pipe fitting, can drive two limit slide to conflicting respectively on adjacent extension rod, make U type on the limit slide lead to and have certain interval between the socket with fixing a position, and then so that the installation of pipe fitting. The extension hole can be penetrated by the extension rod, so that the extension rod can move along the vertical direction.
The utility model discloses a further setting, first elastic component centers on mold core circumference equipartition is two at least near terminal surface and the quantity of taking off the flitch in the terrace die, the terrace die with take off the flitch and be connected through first elastic component.
Through adopting above-mentioned technical scheme, the removal of flitch can be convenient for to the removal of flitch by the first elastic component that quantity is two at least to in the clamp of pipe fitting with unclamp.
The utility model discloses a further setting, the second guide pillar is two at least around terrace die circumference equipartition and quantity.
Through adopting above-mentioned technical scheme, the second guide pillar that quantity is two at least can make the slip of taking off the flitch more steady to in the machining precision of improvement pipe fitting throat, and then improve the yields of pipe fitting throat.
According to the further arrangement of the utility model, the end part of the stamping head facing the female die is provided with the first inclined part along the circumferential direction, and the diameter of the end of the first inclined part, which is farthest away from the male die, is smaller than the diameter of the other end of the first inclined part; the inner wall of the end part of the mold core, which is far away from the stripper plate, is provided with a second inclined part, and the inner diameter of one end, which is far away from the stripper plate, of the second inclined part is larger than that of the other end of the second inclined part.
Through adopting above-mentioned technical scheme, first slope can be convenient for the tip of punching press head slide in waiting to process the pipe fitting along the axial to the processing of pipe fitting. The second inclined portion may be used for necking forming of the pipe.
The utility model discloses a further setting, the punching press head includes punching press main part and shaping portion, the punching press main part is fixed in on the terrace die, shaping portion is fixed in the tip that the terrace die was kept away from to the punching press main part.
By adopting the technical scheme, the forming parts with different outer diameter sizes can be replaced by the stamping heads divided into two parts, so that the pipe fittings with different necking sizes can be machined, the machining efficiency of the pipe fittings can be improved conveniently, the recyclable frequency of the die can be improved, and the application range of the die can be improved conveniently.
To sum up, the utility model discloses following beneficial effect has:
1. the demolding efficiency of the pipe fitting after necking processing can be improved conveniently;
2. the necking processing efficiency of large-batch pipe fittings can be improved, and the production efficiency of enterprises can be improved conveniently;
3. the fixing structure with the elastic tightening device can be used for conveniently improving the positioning precision of the pipe fitting, and further improving the processing precision of the pipe fitting necking.
Generally speaking the utility model discloses, both can be convenient for improve the drawing of patterns efficiency after the pipe fitting throat processing, still can improve the throat machining efficiency of big batch pipe fitting, and then be convenient for improve the production efficiency of enterprise.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a plan view of the present embodiment;
FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2;
FIG. 4 is an enlarged view at C in FIG. 3;
fig. 5 is a cross-sectional view taken along plane B-B of fig. 2.
Reference numerals: 1. mounting a template; 2. a lower template; 3. a first guide sleeve; 4. a first guide post; 5. a mold body; 51. a male die; 52. a female die; 53. a second guide sleeve; 54. a second guide post; 6. a material removing plate; 7. a first elastic member; 8. punching a head; 81. stamping the main body; 82. a molding section; 9. a mold core; 10. positioning the socket; 11. a fixed seat; 12. a guide bar; 13. a limiting slide block; 14. a U-shaped through groove; 140. mounting a through hole; 15. a loading chamber; 16. a second elastic member; 17. an extension rod; 18. an extension hole; 19. a first inclined portion; 20. a second inclined portion; 21. a slide channel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): the utility model provides a mould for pipe fitting throat, as shown in figure 1, including cope match-plate pattern 1 and the lower bolster 2 that can draw close each other, the symmetry is equipped with first guide pin bushing 3 on the cope match-plate pattern 1, and first guide pin bushing 3 is fixed in the terminal surface of cope match-plate pattern 1, and sliding connection has the first guide pillar 4 that can pass cope match-plate pattern 1 in the first guide pin bushing 3, and cope match-plate pattern 1 is connected through first guide pillar 4 with lower bolster 2. A die body 5 is arranged between the upper die plate 1 and the lower die plate 2, the die body 5 comprises a male die 51 and a female die 52, the male die 51 is fixed on the bottom surface of the upper die plate 1, and the female die 52 is fixed on the top surface of the lower die plate 2. The vertical direction is the direction along which the male mold 51 moves closer to the female mold 52. A second guide sleeve 53 is fixed on the top surface of the lower template 2, a second guide post 54 is connected in the second guide sleeve 53 in a sliding manner, and the second guide post 54 extends into the male die 51 and is connected with the male die 51. The number of the second guide posts 54 is four, and the second guide posts are uniformly distributed around the circumference of the male die 51, so that the processing precision of the pipe necking is improved, and the yield of the pipe necking is improved.
As shown in fig. 2 and 3, the outer wall of the second guide post 54 is slidably connected with a stripper plate 6 located between the male die 51 and the female die 52, a first elastic member 7 is arranged between the stripper plate 6 and the male die 51, the first elastic members 7 are uniformly distributed on the end surface of the male die 51 close to the stripper plate 6 around the circumference of the die core 9, and the number of the first elastic members 7 and the second elastic members 16 is six, and the first elastic members 7 and the second elastic members 16 are springs commonly used in the field of dies. The upper template 1 is provided with a punching head 8 which penetrates through the stripper plate 6 along the vertical direction. The punch 8 includes a punch body 81 and a forming portion 82, the punch body 81 and the forming portion 82 are both cylindrical members, the punch body 81 is fixed to the punch 51, and the forming portion 82 is fixed to an end portion of the punch body 81 away from the punch 51. The stamping head 8 can realize the processing of pipe fittings with different necking sizes by replacing the forming part 82 with different outer diameter sizes, thereby being convenient for improving the processing efficiency of the pipe fittings, improving the cycle times of the die and being convenient for improving the application range of the die.
As shown in fig. 3 and 4, the forming portion 82 on the punching head 8 is provided with a first inclined portion 19 along the circumferential direction toward the end of the female die 52, the first inclined portion 19 is a solid structure with an inverted trapezoid cross section and integrated with the punching head 8, and the diameter of the end of the first inclined portion 19 farthest from the male die 51 is smaller than that of the other end thereof, so that the end of the punching head 8 can slide into the pipe to be processed along the axial direction. The inner wall of the end part of the mold core 9 far away from the stripper plate 6 is provided with a second inclined part 20, the second inclined part 20 is of a structure which is annularly cut along the circumferential direction of the end part of the mold core 9 and is used for necking and forming of pipe fittings, and the inner diameter of one end of the second inclined part 20 far away from the stripper plate 6 is larger than that of the other end of the second inclined part.
The side surface of the stripper plate 6 facing the female die 52 is fixed with a die core 9 for necking forming, the die core 9 is a cylindrical piece, and the stamping head 8 is in sliding connection with the die core 9. A sliding channel 21 which penetrates through the whole mold core 9 along the vertical direction is arranged in the mold core 9, and the stamping head 9 is connected in the mold core 9 in a sliding mode through the sliding channel 21. And a positioning socket 10 which is matched with the mold core 9 and used for positioning and mounting the pipe fitting is fixed in the female mold 52, and the positioning socket 10 is a cylindrical part which is in clearance fit with the inner wall of the pipe fitting.
The lower template 2 is provided with fixing seats 11 symmetrically arranged relative to the punching head 8, the fixing seats 11 are metal stretching blocks, guide rods 12 axially vertical to the punching head 8 are inserted between the two fixing seats 11, and the guide rods 12 are symmetrically arranged relative to the punching head 8 and are four in number. The guide rod 12 can facilitate the movement of the limiting slide block 13, so that the movement of the limiting slide block 13 is smoother. The guide rod 12 is connected with two limiting sliding blocks 13 which are respectively located on two sides of the positioning socket 10 and can be close to each other in a sliding mode, the limiting sliding blocks 13 are located on two sides of the positioning socket 10, the limiting sliding blocks 13 are metal stretching blocks and can be used for clamping and reinforcing a pipe fitting to be machined, the pipe fitting to be machined is inserted into the positioning socket 10, positioning accuracy of the pipe fitting is improved, and accordingly yield of pipe fitting necking machining is improved. The end face of taking off flitch 6 towards die 52 is fixed with at least two extension rods 17 that can supply limit slide 13 to contradict along 8 axial symmetry of ram press, and extension rod 17 is the tensile piece of rectangle metal, and extension rod 17 lies in limit slide 13's both sides respectively, offers the extension hole 18 that supplies extension rod 17 to penetrate on the lower bolster 2, and the quad slit structure of extension hole 18 for having certain degree of depth.
As shown in fig. 1, a U-shaped through groove 14 facing the side wall of the positioning socket 10 is formed in the side surface of the limiting slider 13 close to the positioning socket 10, the U-shaped through groove 14 is matched with the outer wall of the pipe fitting, and the axial direction of the U-shaped through groove 14 is the same as the axial direction of the stamping head 8, so that the fitting degree of the limiting slider 13 and the pipe fitting is improved. When the two limiting sliding blocks 13 are close to and attached to each other, a mounting through hole 140 for clamping a pipe fitting is formed between the U-shaped through grooves 14, and the thickness of the mounting through hole 140 is the minimum distance between the U-shaped through groove 14 and the positioning socket 10 and is matched with the thickness of the pipe fitting.
As shown in fig. 5, loading chambers 15 are fixed on both sides of the limiting slider 13 along the axial direction of the guide rod 12, the loading chambers 15 have a hole structure with a certain depth for installing second elastic members 16, and adjacent loading chambers 15 in the same direction are connected by the second elastic members 16. The second elastic part 16 can be used for improving the pressure of the limiting slide block 13 for reinforcing and clamping the pipe fitting, so that the pipe fitting is not prone to deviation in the machining process, and the machining precision of the pipe fitting is further convenient to improve. Second elastic component 16 is at least one round vertical direction circumference equipartition setting and quantity, can be according to the wall thickness and the diameter of pipe fitting, correspondingly selects the quantity that sets up of second elastic component 16, and the quantity that sets up through second elastic component 16 is in order to realize pressing from both sides the regulation of tight pipe fitting pressure, can be convenient for the installation and the dismantlement of pipe fitting, and then be convenient for improve the machining efficiency of pipe fitting.
The working principle and the process thereof are as follows: when the pipe fitting fixing device is installed, the two limiting sliding blocks 13 are driven to be away from each other, then the pipe fitting is installed and inserted on the positioning socket 10, the limiting sliding blocks 13 are loosened, and at the moment, the U-shaped through grooves 14 in the limiting sliding blocks 13 respectively abut against two side walls of the pipe fitting, so that the pipe fitting is fixed; then, starting the stamping equipment, wherein the upper template 1 is subjected to the action of external force in the vertical direction, so that the male die 51 and the stamping head 8 are driven to move downwards; when the stamping head 8 moves downwards to the end part of the mold core 9 to be inconsistent with the end part of the pipe, the end part of the pipe deforms along the inner wall of the mold core 9 due to extrusion, and the stamping head 8 continues to press downwards until the necking distance of the pipe is completed, so that the necking processing procedure of the pipe is completed. When the pipe fitting demolds, cope match-plate pattern 1 moves upwards for first elastic component 7 releases elastic potential energy and removes flitch 6 downstream in order to drive, and then is convenient for the pipe fitting to loosen from punching press head 8, makes the throat machining efficiency of pipe fitting obtain effectual improvement.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (10)
1. A mould for pipe necking comprises an upper template (1) and a lower template (2) which can be drawn close to each other, wherein a mould body (5) is arranged between the upper template (1) and the lower template (2), and is characterized in that the mould body (5) comprises a male mould (51) and a female mould (52), the male mould (51) is fixed on the bottom surface of the upper template (1), and the female mould (52) is fixed on the top surface of the lower template (2); a second guide sleeve (53) is fixed on the top surface of the lower template (2), a second guide post (54) is connected in the second guide sleeve (53) in a sliding manner, and the second guide post (54) extends into the male die (51) and is connected with the male die (51); the outer wall of the second guide post (54) is connected with a stripper plate (6) between the male die (51) and the female die (52) in a sliding manner, and a first elastic part (7) is arranged between the stripper plate (6) and the male die (51); the upper die plate (1) is provided with a stamping head (8) which can penetrate through the stripper plate (6) along the vertical direction, a die core (9) for necking forming is fixed on the end side of the stripper plate (6) facing the female die (52), a sliding channel (21) which penetrates through the whole die core (9) along the vertical direction is arranged in the die core (9), and the stamping head (8) is connected in the die core (9) in a sliding manner through the sliding channel (21); and a positioning socket (10) which is matched with the mold core (9) and used for positioning and mounting the pipe fitting is fixed in the female mold (52).
2. The die for pipe necking according to claim 1, wherein the lower die plate (2) is provided with symmetrically arranged fixing seats (11) opposite to the punching head (8), a guide rod (12) axially perpendicular to the punching head (8) is inserted between the fixing seats (11), the guide rod (12) is slidably connected with two limiting sliders (13) which are respectively positioned at two sides of the positioning socket (10) and can be close to each other, a U-shaped through groove (14) arranged towards the positioning socket (10) is formed in the side surface of each limiting slider (13) close to the positioning socket (10), and the axial direction of the U-shaped through groove (14) is the same as the axial direction of the punching head (8); when the two limiting sliding blocks (13) are close to and attached to each other, an installation through hole (140) for clamping a pipe fitting is formed between the U-shaped through grooves (14).
3. A die for pipe necking according to claim 2, wherein loading chambers (15) are fixed to both sides of the limit slider (13) along the axial direction of the guide rod (12), and adjacent loading chambers (15) in the same direction are connected by a second elastic member (16).
4. A die for pipe necking according to claim 3, wherein the second elastic members (16) are circumferentially and uniformly arranged along the vertical direction and are at least one in number.
5. Mould for pipe necking according to claim 2, characterized in that said guides (12) are arranged symmetrically with respect to the punch head (8) and are at least two in number.
6. The die for pipe necking according to claim 2, wherein the end surface of the stripper plate (6) facing the die (52) is symmetrically fixed with at least two extension rods (17) against which the limiting slide blocks (13) can abut against relative to the punch head (8), the extension rods (17) are respectively located on two sides of the limiting slide blocks (13), and the lower die plate (2) is provided with extension holes (18) through which the extension rods (17) can penetrate.
7. A die for pipe necking according to claim 1, wherein the first elastic members (7) are uniformly distributed around the circumference of the die core (9) on the end surfaces of the punches (51) close to the stripper plate (6) and are at least two in number, and the punches (51) and the stripper plate (6) are connected through the first elastic members (7).
8. A die for pipe necking according to claim 1, wherein said second guide posts (54) are evenly distributed around the circumference of the male die (51) and are at least two in number.
9. A die for pipe necking according to claim 1, wherein the end of the punch (8) facing the female die (52) is circumferentially provided with a first inclined part (19), and the diameter of the first inclined part (19) at the end farthest away from the male die (51) is smaller than that of the other end; and a second inclined part (20) is formed in the inner wall of the end part of the mold core (9) far away from the stripper plate (6), and the inner diameter of one end of the second inclined part (20) far away from the stripper plate (6) is larger than that of the other end of the second inclined part.
10. A die for pipe necking according to claim 1, wherein the punch head (8) comprises a punch body (81) and a forming portion (82), the punch body (81) being fixed to the punch (51), the forming portion (82) being fixed to the end of the punch body (81) remote from the punch (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167196.1U CN209849719U (en) | 2019-01-30 | 2019-01-30 | A mould for pipe fitting throat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167196.1U CN209849719U (en) | 2019-01-30 | 2019-01-30 | A mould for pipe fitting throat |
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| Publication Number | Publication Date |
|---|---|
| CN209849719U true CN209849719U (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920167196.1U Active CN209849719U (en) | 2019-01-30 | 2019-01-30 | A mould for pipe fitting throat |
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| CN (1) | CN209849719U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622789A (en) * | 2019-01-30 | 2019-04-16 | 佛山市景和汽配有限公司 | A kind of mold for pipe fitting necking |
| CN110976678A (en) * | 2019-12-28 | 2020-04-10 | 保隆(安徽)汽车配件有限公司 | Large-angle necking die for beveled thin-wall pipe fitting |
-
2019
- 2019-01-30 CN CN201920167196.1U patent/CN209849719U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622789A (en) * | 2019-01-30 | 2019-04-16 | 佛山市景和汽配有限公司 | A kind of mold for pipe fitting necking |
| CN110976678A (en) * | 2019-12-28 | 2020-04-10 | 保隆(安徽)汽车配件有限公司 | Large-angle necking die for beveled thin-wall pipe fitting |
| CN110976678B (en) * | 2019-12-28 | 2021-07-20 | 保隆(安徽)汽车配件有限公司 | Large-angle necking die for beveled thin-wall pipe fitting |
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