CN209999625U - arc core-pulling mould - Google Patents

arc core-pulling mould Download PDF

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Publication number
CN209999625U
CN209999625U CN201920499461.6U CN201920499461U CN209999625U CN 209999625 U CN209999625 U CN 209999625U CN 201920499461 U CN201920499461 U CN 201920499461U CN 209999625 U CN209999625 U CN 209999625U
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Prior art keywords
die
core
mould
arc
cavity
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CN201920499461.6U
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支运兵
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CHENGDU GUANGHONG MOULD MANUFACTURING Co Ltd
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CHENGDU GUANGHONG MOULD MANUFACTURING Co Ltd
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Priority to CN201920499461.6U priority Critical patent/CN209999625U/en
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Abstract

The utility model relates to an arc loose core mould, including last mould lower mould, be provided with the die cavity on the lower mould, go up be provided with on the mould with die cavity complex core, it is used for the shaping product die cavity to form between die cavity and the core, it has the rotatory subassembly of loosing core that is used for shaping product inner chamber to articulate on the lower mould, the die cavity is the arc that adapts to with the product outline, the rotatory central axis of the articulated shaft of the articulated department of loosing core subassembly and lower mould coincides with the circular arc central line of die cavity, the rotatory axial of the articulated shaft of subassembly and lower mould of loosing core is perpendicular with the direction of height of lower mould, be connected with on the rotatory subassembly of loosing core and be used for making the rotatory drive assembly who looses core the subassembly and follow the interior screw-out of die cavity for the crooked direction orientation of shaping product arc is to the mould side, and single product shared area on the lower mould is minimum this moment, consequently can be in the same mould.

Description

arc core-pulling mould
Technical Field
The utility model belongs to the technical field of injection mold's technique and specifically relates to a kinds of arc loose core mould is related to.
Background
Plastic pipelines are steadily developed, various pipe fittings are continuously developed and innovated, plastic products with various shapes are continuously produced, the structure of a die is continuously complicated, and the requirement on the design of the die is continuously improved.
Patent application with grant publication number CN203792645U discloses kinds of plastic mold circular arc structure of loosing core, including the product seat, be equipped with the arc track in the product seat, be equipped with the subassembly of loosing core in the arc track, the subassembly of loosing core is including the slider of loosing core, circular arc mandrel and the straight line mandrel that set gradually.
However, since the product in this mold is arc-shaped, the product occupies a large space on the product seat, which results in that molds need a larger volume when molding a plurality of products, and the material cost is high when manufacturing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an kinds of arc loose core moulds have the more advantages of the shaping finished product in the mould of the same size.
kinds of arc loose core moulds, including last mould lower mould, be provided with the die cavity on the lower mould, upward be provided with on the mould with die cavity complex core, it is used for the shaping product die cavity to form between die cavity and the core, articulated on the lower mould have the rotatory subassembly of loosing core that is used for the shaping product inner chamber, the die cavity is the arc that adapts to with the product outline, the rotatory central axis of the articulated shaft of the articulated department of subassembly and lower mould of loosing core coincides with the circular arc central line of die cavity, the rotatory axial of the articulated shaft of subassembly and lower mould of loosing core is perpendicular with the direction of height of lower mould, be connected with on the rotatory subassembly of loosing core and be used for making the rotatory drive assembly who looses core and follow the die cavity and screw out.
Through above-mentioned technical scheme for the crooked direction orientation of shaping product arc is to the side of the mould, and the area that single product occupied on the lower mould this moment is minimum, consequently can form more products in the same mould, and required mould size reduces greatly when shaping a plurality of products, has reduced material cost.
Preferably, the rotary core pulling assembly comprises a core pulling block and a hinged arm connected with the core pulling block, the core pulling block is arc-shaped, the arc center line of the core pulling block coincides with the arc center line of the die cavity, and the hinged arm is hinged with the lower die.
Through above-mentioned technical scheme, make through the articulated arm to pull out the core piece and can move to in the die cavity or deviate from the die cavity, make things convenient for product shaping and drawing of patterns, because the circular arc central line of core piece and the circular arc central line of die cavity and the central axis of the articulated shaft of articulated arm all coincide, consequently when the articulated arm is rotatory, will make the core piece insert the die cavity or move out from the die cavity along the radian direction of die cavity.
Preferably, the driving assembly comprises a guide plate fixed on the upper die and a sliding block arranged on the hinged arm, a sliding groove matched with the sliding block is arranged on the guide plate, the sliding block is arranged by deviating from the rotating center of the hinged arm, the sliding groove comprises an arc-shaped section, and the arc-shaped section comprises an th end and a second end;
when the upper die and the lower die move relatively, the sliding block slides in the arc-shaped section under the matching of the sliding groove and the sliding block, the hinge arm rotates, when the sliding block is positioned at the th end, the core-pulling block is positioned in the die cavity, when the sliding block is positioned at the second end, the core-pulling block is positioned outside the die cavity, and when the upper die and the lower die are close to each other, the sliding block moves from the th end to the second section.
Through the technical scheme, when the upper die moves towards the lower die side, the sliding block slides in the sliding groove under the action of the sliding groove, and the hinged arm is hinged to the lower die, so that the hinged arm rotates on the lower die when the sliding block slides, and the core-pulling block moves towards the die cavity or moves away from the die cavity side, so that the core-pulling block can directly move to a specified position in the process of demolding and die assembly through the sliding groove and the sliding block, an additional matching driving mechanism is not needed, and the manufacturing and using cost of the die is saved.
Preferably, the sliding groove further comprises a straight line section, the straight line section is arranged along the height direction of the upper die, and the straight line section is connected with the second end; when the core pulling block moves into the die cavity, the sliding block is just positioned at the connection part of the straight line section and the arc section; when the sliding block is positioned at the joint of the straight line section and the arc section, a distance exists between the upper die and the lower die, and when the upper die and the lower die are continuously close to each other, the sliding block slides in the straight line section until the upper die and the lower die are closed.
Through the technical scheme, need to take out the core piece and deviate from the product when the drawing of patterns, make for the convenience to take out the core piece and deviate from the needs and make separately fixed distance between mould and the lower mould this moment, and then make fashioned product can not receive mould and lower mould mutual extrusion force, the power that receives when taking out the core piece and deviate from this moment is little, the drawing of patterns is more square convenient, through be connected with the straightway on the segmental arc, the slider moves in the straightway when can making last mould move back to lower mould side, articulated arm irrotational this moment, and then it is motionless to take out the core piece, it separates to go up the mould with the lower mould to separate product upper surface and last mould after fixed distance to separate when going up the mould, the slider moves to segmental arc department this moment, it will move to the segmental arc along with last mould and the lower.
Preferably, the upper die is provided with a positioning column, and the lower die is provided with a positioning hole for inserting the positioning column.
Through the technical scheme, the upper die and the lower die are more stable in the die assembling process.
Preferably, a plurality of cavities are arranged on the lower die, injection molding runners are communicated between the adjacent cavities, and injection molding openings communicated with the injection molding runners are arranged on the upper die.
Through above-mentioned technical scheme, make things convenient for a plurality of products of inferior shaping, increase production efficiency.
Preferably, the communicating part of the injection molding runner and the cavity is provided with a necking.
Through the technical scheme, the connecting surface of the connecting part of the injection molding waste material and the product formed in the injection molding runner is smaller, and the product and the injection molding waste material are conveniently separated in the follow-up process.
Preferably, the lower die is provided with an ejection mechanism for ejecting a product out of the lower die, the ejection mechanism comprises a top plate and a plurality of ejector pins arranged on the top plate, the ejector pins penetrate through the lower die in a sliding manner, and the ends of the ejector pins departing from the top plate are located in the injection molding flow channel.
Through the technical scheme, after the upper die and the lower die are separated and the core-pulling block moves out of a molded product, the ejector pin is pushed to move through the top plate, the ejector pin pushes the product to be separated from the lower die at the moment, blanking is convenient, and meanwhile, the ejector pin is only in contact with injection molding waste materials, so that the surface quality of the molded product is better.
Preferably, be provided with the release link on the roof, the release link slides and wears to locate on the lower mould, just after lower mould and last mould compound die the release link deviates from the roof end and contradicts with last mould, and the thimble deviates from the roof end at this moment and flushes with the runner diapire of moulding plastics just.
Through above-mentioned technical scheme, when last mould to the lower mould motion, go up the mould and will promote the release link, the release link will promote the roof and reset this moment, and the roof will resume to initial position when going up mould and lower mould complete die assembly, makes things convenient for injection moulding next time.
Preferably, the number of the cavities is even, the cavities are groups in pairs, the injection molding runner is located between two cavities in the same group, the cavity deviates from another cavity side in the same group and is provided with a balance cavity communicated with the cavities, the top plate is provided with a balance rod, the balance rod penetrates through the lower die in a sliding mode, and the end, deviating from the top plate, of the balance rod is located in the balance cavity.
Through the technical scheme, in order to ensure good product molding quality, each product only allows plastic in a molten state to flow into the cavity from between the two cavities in the same group during molding, the paths through which the plastic in the molten state passes are the same at the moment, a plurality of products can be molded simultaneously, but when the product is ejected, the injection molding waste is only on one side of the product, so that the product can be reversed or clamped in the lower die due to unbalanced stress during demolding, a balance cavity is arranged on the side of the cavity where no injection molding flow channel is arranged, when the product is required to be ejected during molding, the ejector pins push the product from the side , the balance rod pushes the product from the other side of the product, and the product can be horizontally ejected from the lower die at the moment, so that the occurrence of the situation that the product is reversed or clamped in the lower die is effectively prevented.
To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:
1. the size of the die required when a plurality of products are formed is greatly reduced, and the material cost is reduced;
2. the core-pulling block can complete core-pulling work without an additional active driving mechanism during demoulding, and the mould manufacturing and using cost is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the embodiment;
FIG. 2 is an exploded view of embodiment , showing primarily the structure of the hinge arms and guide plate;
FIG. 3 is a second exploded view of the embodiment, mainly highlighting the structure of the hinge arms and the core-pulling block;
FIG. 4 is a structural view of the upper mold, mainly highlighting the structure of the core;
FIG. 5 is a structural view of the lower die, mainly highlighting the structural view of the slider in the straight section;
FIG. 6 is a structural view of the lower die, mainly highlighting the structural view of the slide at the second end of the arcuate segment;
FIG. 7 is a structural view of the lower die, mainly illustrating the structural view of the slider at the th end of the arc segment;
fig. 8 is a cross-sectional view of the lower mold, mainly highlighting the locations and configurations of the ejector pin and the balance bar.
The number of the reference marks is 1, an upper die, 2, a lower die, 3, a cavity, 4, a core, 5, an injection molding opening, 6, a rotary core pulling assembly, 61, a core pulling block, 62, a hinge arm, 7, a driving assembly, 71, a guide plate, 72, a sliding block, 8, a sliding groove, 81, an arc-shaped section, 82, a straight line section, 9, a end, 10, a second end, 11, a positioning column, 12, a positioning hole, 13, an injection molding flow channel, 14, a top plate, 15, an ejector pin, 16, a reset rod, 17, a balance cavity, 18 and a balance rod.
Detailed Description
The present invention will be described in further detail in with reference to the accompanying drawings.
As shown in fig. 1 and 2, arc core-pulling molds comprise an upper mold 1 and a lower mold 2, wherein a cavity 3 is arranged on the lower mold 2, a core 4 (shown in fig. 4) matched with the cavity 3 is arranged on the upper mold 1, a molding cavity for a molded product is formed between the cavity 3 and the core 4, a rotary core-pulling assembly 6 for an inner cavity of the molded product is hinged on the lower mold 2, and a driving assembly 7 for enabling the rotary core-pulling assembly 6 to be screwed out of the molding cavity is connected on the rotary core-pulling assembly 6.
As shown in fig. 2 and 3, wherein a product to be molded in the present application is an arc-shaped tube, the cavity is hollow and has two open sides, the mold cavity is arc-shaped corresponding to the outer contour of the product, the rotary core-pulling assembly 6 includes a core-pulling block 61 and a hinge arm 62 connected to the core-pulling block 61, the hinge arm 62 is hinged to the lower mold 2, when the hinge arm 62 rotates relative to the lower mold 2, the core-pulling block 61 rotates along with the hinge arm 62, the core-pulling block 61 is arc-shaped, during injection molding, the core-pulling block 61 is located in the mold cavity, after molding the product, the core-pulling block 61 is located in the inner cavity of the product, in order to enable the core-pulling block 61 to be released from the product after molding the product, the central axis of the hinge shaft of the hinge arm 62 coincides with the arc-shaped central line of the core-pulling block 61 and the arc-shaped central line of the mold cavity, at this time, when the hinge arm 62 rotates, the core-pulling block 61 is rotated out from the opening on the side of the product , facilitating the product to be released from the mold, in order to enable the bending direction of the upper mold cavity to face 1, the.
As shown in fig. 5 and 6, the driving assembly 7 includes a guide plate 71 fixed on the upper mold 1 and a sliding block 72 provided on the hinge arm 62, the guide plate 71 is provided with a sliding slot 8 engaged with the sliding block 72, the sliding block 72 is disposed offset from the rotation center of the hinge arm 62, the sliding slot 8 includes an arc-shaped segment 81 and a straight segment 82, the arc-shaped segment 81 includes an -th end 9 and a second end 10, the straight segment 82 is connected to the second end 10, when the upper mold 1 and the lower mold 2 move relatively, the sliding block 72 is caused to slide in the arc-shaped segment 81 by the engagement of the sliding slot 8 and the sliding block 72, the hinge arm 62 rotates, when the sliding block 72 is located at the -th end 9, the core back block 61 is located in the mold cavity, when the sliding block 72 is located at the second end 10, the core block 61 is located outside the mold cavity (as shown in fig. 7), and when the upper.
The straight line section 82 is arranged along the height direction of the upper die 1, and when the core pulling block 61 moves into the die cavity, the sliding block 72 is just positioned at the connection position of the straight line section 82 and the arc section 81; when the sliding block 72 is located at the joint of the straight line section 82 and the arc section 81, a space exists between the upper die 1 and the lower die 2, and when the upper die 1 and the lower die 2 are continuously close to each other, the sliding block 72 slides in the straight line section 82 until the upper die 1 and the lower die 2 complete die assembly.
As shown in fig. 2, in order to make the upper mold 1 and the lower mold 2 more stable in the mold closing and demolding process, a positioning column 11 is provided on the upper mold 1, and at the same time, a positioning hole 12 for inserting the positioning column 11 is provided on the lower mold 2.
As shown in fig. 7 and 8, in this embodiment, a plurality of cavities 3 are arranged on the lower die 2, the number of the cavities 3 is even, each two of the cavities 3 is groups, an injection runner 13 is arranged between two cavities 3 in the same group, an injection port 5 communicated with the injection runner 13 is arranged on the upper die 1, and a balance cavity 17 communicated with the cavity 3 is arranged on the side of the cavity 3 away from the other cavity 3 in the same group.
As shown in fig. 8, the lower die 2 is provided with an ejection mechanism for ejecting a product from the lower die 2, the ejection mechanism includes a top plate 14 and a plurality of ejector pins 15 arranged on the top plate 14, the ejector pins 15 are slidably disposed on the lower die 2, and ends of the ejector pins 15 departing from the top plate 14 are located in the injection runner 13. a balance bar 18 is further disposed on the top plate 14, the balance bar 18 is slidably disposed on the lower die 2, and ends of the balance bar 18 departing from the top plate 14 are located in a balance cavity 17. meanwhile, a reset bar 16 is disposed on the top plate 14, the reset bar 16 is slidably disposed on the lower die 2, and the end of the reset bar 16 departing from the top plate 14 is abutted to the upper die 1 after the lower die 2 and the upper die 1 are assembled, and at this time, the end of.
And (3) injection molding: when a product is molded, the plastic in a molten state is injected into the mold cavity through the injection molding opening 5, at the moment, the plastic in the molten state enters the interior of the mold cavity and the balance cavity 17 through the injection molding runner 13, and finally, the mold cavity is filled with the plastic, and demolding is started after the product is cooled and molded.
In the demolding process, the injection molding machine drives the upper mold 1 to move back to the end away from the lower mold 2, at the moment, the sliding block 72 slides in the straight line section 82, is kept at a certain distance between the upper mold 1 and the lower mold 2 when the sliding block 72 moves to the joint of the straight line section 82 and the arc-shaped section 81, at the moment, the sliding block 72 moves into the arc-shaped section 81 along with the continuous movement of the upper mold 1, at the moment, the hinge arm 62 rotates under the action of the arc-shaped section 81, and at the same time, the hinge arm 62 drives the core pulling block 61 to be released from a molded product until the sliding block 72 moves to the th end 9, and the;
and (3) product ejection process: the oil cylinder on the injection molding machine pushes the top plate 14 to move, at the moment, the top plate 14 pushes the ejector pin 15 and the balance rod 18 to move, the ejector pin 15 pushes injection molding waste formed in the injection molding runner 13, the balance rod 18 pushes injection molding waste formed in the balance cavity 17, and then a product is pushed out from the lower die 2 to complete demolding.
The mold closing process is that the upper mold 1 is driven by an injection molding machine to move towards the side of the lower mold 2, the sliding block 72 slides in the arc-shaped section 81, the hinge arm 62 rotates under the action of the arc-shaped section 81, the core-pulling block 61 fixed on the hinge arm 62 gradually enters the cavity 3 along with the rotation of the hinge arm 62, when the sliding block 72 slides to the joint of the arc-shaped section 81 and the straight section 82, the core-pulling block 61 is just positioned in the cavity 3, the sliding block 72 moves in the straight section 82 along with the continuous movement of the upper mold 1, the hinge arm 62 stops rotating until the upper mold 1 and the lower mold 2 are completely closed, the core-pulling block 61 is positioned in the cavity, the reset rod 16 is pushed by the upper mold 1 during the movement of the upper mold 1 towards the lower mold 2, so that the upper plate 14 starts to reset, the upper plate 14 drives the ejector pin 15 to reset with the balance rod 18 , and the upper plate 14 and the ejector pin 15 complete reset when the.
The die cavity is arc-shaped, so that the arc center line of the die cavity is a line formed by the arc center of an arc structure formed by bending the die cavity; similarly, the arc center line of the core pulling block 61 is a line formed by the arc center of the arc structure formed by bending the core pulling block 61.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

  1. The utility model provides a arc loose core mould, including last mould (1) lower mould (2), be provided with die cavity (3) on lower mould (2), be provided with on last mould (1) with die cavity (3) complex core (4), it is used for the shaping product die cavity to form between die cavity (3) and core (4), characterized in that it has rotatory subassembly (6) of loosing core that is used for shaping the product inner chamber to articulate on lower mould (2), the die cavity is the circular arc that adapts to the product outline, the central axis of the articulated shaft of the articulated department of rotatory subassembly of loosing core (6) and lower mould (2) coincides with the circular arc central line of die cavity, the axial of the articulated shaft of rotatory subassembly of loosing core (6) and lower mould (2) is perpendicular with the direction of height of lower mould (2), be connected with on rotatory subassembly of loosing core (6) and be used for making rotatory subassembly of loosing core (6) from the drive assembly (7) of.
  2. 2. arc core-pulling die according to claim 1, wherein the rotary core-pulling assembly (6) includes a core-pulling block (61) and a hinge arm (62) connected to the core-pulling block (61), the core-pulling block (61) is arc-shaped, the arc center line of the core-pulling block (61) coincides with the arc center line of the die cavity, and the hinge arm (62) is hinged to the lower die (2).
  3. 3. arc core pulling die according to claim 2, characterized in that the driving assembly (7) comprises a guide plate (71) fixed on the upper die (1) and a slide block (72) arranged on the hinge arm (62), the guide plate (71) is provided with a slide slot (8) matched with the slide block (72), the slide block (72) is arranged deviating from the rotation center of the hinge arm (62), the slide slot (8) comprises an arc-shaped segment (81), and the arc-shaped segment (81) comprises a end (9) and a second end (10);
    when the upper die (1) and the lower die (2) move relatively, the sliding block (72) slides in the arc-shaped section (81) under the matching of the sliding chute (8) and the sliding block (72), the hinge arm (62) rotates, when the sliding block (72) is positioned at the th end (9), the core-pulling block (61) is positioned in the die cavity, when the sliding block (72) is positioned at the second end (10), the core-pulling block (61) is positioned outside the die cavity, and when the upper die (1) and the lower die (2) approach each other, the sliding block (72) moves from the th end (9) to the second section.
  4. 4. The arc core-pulling die according to claim 3, wherein the chute (8) further comprises a straight line section (82), the straight line section (82) is arranged along the height direction of the upper die (1), the straight line section (82) is connected with the second end (10), when the core-pulling block (61) moves into the die cavity, the sliding block (72) is just located at the connection position of the straight line section (82) and the arc section (81), when the sliding block (72) is located at the connection position of the straight line section (82) and the arc section (81), a space exists between the upper die (1) and the lower die (2), and when the upper die (1) and the lower die (2) continue to approach, the sliding block (72) slides in the straight line section (82) until the upper die (1) and the lower die (2) complete die assembly.
  5. 5. The arc core pulling die of claim 1, wherein the upper die (1) is provided with a positioning column (11), and the lower die (2) is provided with a positioning hole (12) for the positioning column (11) to insert into.
  6. 6. The arc core pulling molds according to claim 1, wherein the lower mold (2) is provided with a plurality of cavities (3), an injection molding runner (13) is communicated between adjacent cavities (3), and the upper mold (1) is provided with an injection molding opening (5) communicated with the injection molding runner (13).
  7. 7. The kinds of arc loose core moulds of claim 6, characterized in that the connection between the injection runner (13) and the cavity (3) is set by necking.
  8. 8. The kinds of arc loose core moulds of claim 6, wherein the lower mould (2) is provided with an ejection mechanism for ejecting a product from the lower mould (2), the ejection mechanism comprises a top plate (14) and a plurality of ejector pins (15) arranged on the top plate (14), the ejector pins (15) are slidably arranged on the lower mould (2), and the ends of the ejector pins (15) departing from the top plate (14) are located in the injection molding runner (13).
  9. 9. The kinds of arc loose core moulds of claim 8, wherein the top plate (14) is provided with a reset rod (16), the reset rod (16) is slidably arranged on the lower mould (2), and after the lower mould (2) and the upper mould (1) are closed, the end of the reset rod (16) departing from the top plate (14) is abutted against the upper mould (1), and at the moment, the end of the ejector pin (15) departing from the top plate (14) is flush with the bottom wall of the injection runner (13).
  10. 10. The arc loose core moulds of claim 8, wherein the number of the cavities (3) is even, each two of the cavities (3) are groups, the injection runner (13) is located between two cavities (3) in the same group, a balance cavity (17) communicated with the cavities (3) is arranged on the side of the cavity (3) deviating from another cavity (3) in the same group, a balance rod (18) is arranged on the top plate (14), the balance rod (18) is slidably arranged on the lower mould (2), and the end of the balance rod (18) deviating from the top plate (14) is located in the balance cavity (17).
CN201920499461.6U 2019-04-12 2019-04-12 arc core-pulling mould Active CN209999625U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920499461.6U CN209999625U (en) 2019-04-12 2019-04-12 arc core-pulling mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920499461.6U CN209999625U (en) 2019-04-12 2019-04-12 arc core-pulling mould

Publications (1)

Publication Number Publication Date
CN209999625U true CN209999625U (en) 2020-01-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920499461.6U Active CN209999625U (en) 2019-04-12 2019-04-12 arc core-pulling mould

Country Status (1)

Country Link
CN (1) CN209999625U (en)

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