CN211389997U - Deep rib position secondary ejection mechanism for automobile bumper - Google Patents
Deep rib position secondary ejection mechanism for automobile bumper Download PDFInfo
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- CN211389997U CN211389997U CN201921758943.5U CN201921758943U CN211389997U CN 211389997 U CN211389997 U CN 211389997U CN 201921758943 U CN201921758943 U CN 201921758943U CN 211389997 U CN211389997 U CN 211389997U
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Abstract
The utility model belongs to the technical field of the mould, especially, relate to a dark muscle position secondary ejection mechanism of car bumper. The utility model discloses, including cope match-plate pattern, lower bolster and bottom plate, when the compound die, cope match-plate pattern and lower bolster are close to each other and form the die cavity, bottom plate top be equipped with the drag hook thimble board, drag hook thimble board top be equipped with a plurality of drag hook thimble assemblies of following drag hook thimble board central line symmetry. The utility model discloses a design drag hook thimble board, thimble splint and thimble board, and design drag hook structure, make the die sinking when ejecting, the drag hook thimble board, thimble splint and the first synchronous motion of thimble board, behind ejecting one section distance, the drag hook breaks away from with the injection molding, thimble splint and thimble board continue the motion, thoroughly ejecting with the injection molding through the thimble, accomplish the drawing of patterns, it is ejecting through twice, can realize automatic getting, the injection molding of avoiding having dark rib can't be ejecting completely at ejecting in-process, ejection efficiency is improved, reduce the ejection fault rate, moreover, the steam generator is simple in structure.
Description
Technical Field
The utility model belongs to the technical field of the mould, a dark muscle position secondary ejection mechanism of car bumper is related to.
Background
Adopt injection mold production plastic product, like car plastics bumper, the system has dark rib in the bumper, at single ejecting in-process, because the rib position is darker, ejecting back product is scrambleed on the kicking block, can't realize getting automatically, causes the bumper to take out the trouble, and ejecting efficiency is lower.
In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a secondary ejection mechanism is disclosed in a chinese patent application No.: 20161048016.6], which includes: the ejection plate is arranged above the upper ejection plate; the lower end of the first ejector pin is fixed on a countersunk head and arranged in the upper ejector plate, and the upper end of the first ejector pin penetrates through the male template and the male die core and extends into a product; the lower end of the second ejector pin is fixed on the other countersunk head and arranged in the ejector plate, and the upper end of the second ejector pin penetrates through the male template and the male die core and extends into a product; the limiting groove is arranged at the lower end of the male template; the upper end of the return mechanism is fixed on the ejector plate, and the other end of the return mechanism movably penetrates through the upper ejector plate and the lower ejector plate; and one end of the limiting column is fixed on the upper ejection plate, and the other end of the limiting column movably penetrates through the ejection plate. The secondary ejection mechanism provided by the invention realizes forced demoulding by using a secondary ejection mode of the ejection plate, and has the advantages of simple structure, convenience in processing and convenience in assembly and disassembly of a mould. But this scheme still exists and can't realize getting the piece automatically, causes to take out the trouble, and ejection efficiency is lower defect.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, a dark muscle position secondary ejection mechanism of car bumper is provided.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides a dark muscle position secondary ejection mechanism of car bumper, includes cope match-plate pattern, lower bolster and bottom plate, and when the compound die, cope match-plate pattern and lower bolster are close to each other and form the die cavity, bottom plate top be equipped with the drag hook thimble board, drag hook thimble board top be equipped with a plurality of drag hook thimble assemblies along drag hook thimble board central line symmetry, drag hook thimble assembly corresponding with the position of die cavity, drag hook thimble board and lower bolster between be equipped with ejector pin splint and thimble board, thimble board top be equipped with a plurality of thimbles.
In foretell car bumper dark muscle position secondary ejection mechanism, drag hook thimble assembly including setting up in the drag hook bottom shaft at drag hook thimble board top, drag hook bottom shaft top be equipped with the drag hook, the drag hook set up along drag hook thimble board central line symmetry, thimble clamp in be equipped with a plurality of drag hook splint through-holes along drag hook thimble board central line symmetry, the position of drag hook and drag hook splint through-hole corresponding.
In foretell car bumper deep rib position secondary ejection mechanism, the thimble board in be equipped with a plurality of drag hook roof through-holes along thimble board central line symmetry, drag hook roof through-hole corresponding with the position of drag hook, the drag hook top be the slope setting, the cross-sectional area of drag hook be less than the cross-sectional area of drag hook bottom shaft.
In foretell car bumper dark muscle position secondary ejection mechanism, drag hook thimble board top still be equipped with a plurality of drag hook thimble board location axles along drag hook thimble board central line symmetry, thimble clamp plate in be equipped with a plurality of thimble clamp plate locating holes along thimble clamp plate central line symmetry, drag hook thimble board location axle and thimble clamp plate locating hole the position corresponding and the shape match and be fit for.
In foretell car bumper dark muscle position secondary ejection mechanism, the thimble board in be equipped with a plurality of thimble board locating holes along thimble board central line symmetry, the thimble board locating hole corresponding and the shape of drag hook thimble board location axle match and fit, thimble clamp plate top be equipped with a plurality of thimble boards along thimble clamp plate central line symmetry and prevent the off-normal axle, the thimble board in still be equipped with a plurality of holes of preventing partially along thimble board central line symmetry, the hole of preventing partially corresponding with the position that the thimble board prevents the off-normal axle.
In foretell car bumper dark muscle position secondary ejection mechanism, drag hook thimble board, thimble clamp plate and thimble board all be the I shape, the drag hook thimble board on be equipped with two and prevent inclined to one side piece along the lateral part of drag hook thimble board central line symmetry, the lateral part prevent inclined to one side piece respectively with thimble clamp plate and thimble board looks butt cooperation.
In the deep rib position secondary ejection mechanism for the automobile bumper, the drag hook ejector plate is further provided with two end deviation prevention blocks, the end deviation prevention blocks are respectively matched with the ejector pin clamping plate and the ejector plate in a butting mode, and the central line of each end deviation prevention block is perpendicular to the central line of each side deviation prevention block.
In the deep rib position secondary ejection mechanism for the automobile bumper, the upper template is provided with the splitter plate, the top of the splitter plate is provided with the injection molding plate, the injection molding plate is internally provided with the injection molding main runner, and the injection molding main runner corresponds to the splitter plate in position.
In the deep rib position secondary ejection mechanism for the automobile bumper, the top of the flow distribution plate is provided with an injection molding runner, the bottom of the flow distribution plate is provided with a plurality of flow distribution pipes which are symmetrical along the central line of the flow distribution plate and communicated with the injection molding runner, and the positions of the flow distribution pipes correspond to the positions of the cavities.
In the deep rib position secondary ejection mechanism for the automobile bumper, a plurality of cooling water channels which are symmetrical along the central line of the upper die plate are arranged in the upper die plate, and two adjacent cooling water channels are parallel to each other.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses a design drag hook thimble board, thimble splint and thimble board, and design drag hook structure, make the die sinking when ejecting, the drag hook thimble board, thimble splint and the first synchronous motion of thimble board, behind ejecting one section distance, the drag hook breaks away from with the injection molding, thimble splint and thimble board continue the motion, thoroughly ejecting with the injection molding through the thimble, accomplish the drawing of patterns, it is ejecting through twice, can realize automatic getting, the injection molding of avoiding having dark rib can't be ejecting completely at ejecting in-process, ejection efficiency is improved, reduce the ejection fault rate, moreover, the steam generator is simple in structure.
2. The utility model discloses a set up the tip and prevent inclined to one side piece and lateral part and prevent inclined to one side piece for both cooperate with thimble splint and thimble board looks butt, when further having ensured drag hook thimble board, thimble splint and thimble board synchronous motion, the three does not take place the angular migration.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is an exploded schematic view of the present invention.
Fig. 2 is an exploded view in another direction of the present invention.
Fig. 3 is a schematic diagram of the local explosion of the present invention.
Fig. 4 is a schematic view of the local explosion in another direction of the present invention.
Fig. 5 is a schematic structural view of the retractor needle assembly.
Fig. 6 is a structural schematic view of the drag hook thimble assembly in another direction.
Fig. 7 is a schematic view of the structure of the diverter plate.
Fig. 8 is a structural schematic view of another direction of the diverter plate.
In the figure: the device comprises an upper template 1, a lower template 2, a bottom plate 3, a draw hook ejector plate 4, a draw hook ejector pin assembly 5, an ejector pin clamping plate 6, an ejector pin plate 7, an ejector pin 8, a draw hook bottom shaft 9, a draw hook 10, a draw hook clamping plate through hole 11, a draw hook ejector plate through hole 12, a draw hook ejector plate positioning shaft 13, an ejector pin clamping plate positioning hole 14, an ejector pin plate positioning hole 15, an ejector pin plate deviation preventing shaft 16, a deviation preventing hole 17, a side deviation preventing block 18, an end deviation preventing block 19, a flow distribution plate 20, an injection molding plate 21, an injection molding main runner 22, an injection molding runner 23, a flow distribution pipe 24.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 5, fig. 6, a deep rib position secondary ejection mechanism of automobile bumper, including cope match-plate pattern 1, lower bolster 2 and bottom plate 3, when the compound die, cope match-plate pattern 1 and lower bolster 2 are close to each other and form the die cavity, 3 tops of bottom plate be equipped with drag hook thimble board 4, 4 tops of drag hook thimble board be equipped with a plurality of drag hook thimble assemblies 5 along the 4 central line symmetries of drag hook thimble board, drag hook thimble assembly 5 corresponding with the position of die cavity, drag hook thimble board 4 and lower bolster 2 between be equipped with ejector pin clamp 6 and thimble board 7, thimble board 7 top be equipped with a plurality of thimbles 8.
In this embodiment, after the completion of moulding plastics, carry out the die sinking, drag hook thimble board 4, thimble clamp plate 6 and the first synchronous motion of thimble board 7, after ejecting a section distance, drag hook thimble assembly 5 breaks away from with the injection molding, thimble clamp plate 6 and thimble board 7 continue to move, thoroughly ejecting the injection molding through thimble 8, accomplish the drawing of patterns, through ejecting twice, can realize getting the piece automatically, the injection molding of avoiding having dark rib can't be ejected completely at ejecting in-process, ejection efficiency is improved, reduce the ejection fault rate, moreover, the steam generator is simple in structure.
Combine fig. 3, fig. 4, fig. 5, fig. 6 to show, drag hook thimble assembly 5 including setting up in the drag hook bottom shaft 9 at drag hook thimble board 4 top, the 9 tops of drag hook bottom shaft be equipped with drag hook 10, drag hook 10 set up along drag hook thimble board 4 central line symmetry, thimble splint 6 in be equipped with a plurality of drag hook splint through-holes 11 along drag hook thimble board 4 central line symmetry, drag hook 10 corresponding with drag hook splint through-hole 11 position.
Specifically, when the retractor thimble plate 4, the thimble clamp plate 6 and the thimble plate 7 move synchronously, the retractor 10 is inserted into the retractor clamp plate through hole 11, and the retractor clamp plate through hole 11 has a limiting effect on the retractor 10.
As shown in fig. 2, 4 and 5, the ejector plate 7 is internally provided with a plurality of draw hook top plate through holes 12 which are symmetrical along the center line of the ejector plate 7, the draw hook top plate through holes 12 correspond to the draw hooks 10, the tops of the draw hooks 10 are obliquely arranged, and the cross sectional areas of the draw hooks 10 are smaller than the cross sectional areas of the draw hook bottom shafts 9.
In this embodiment, when drag hook thimble board 4, ejector pin splint 6 and thimble board 7 synchronous motion, drag hook 10 inserts in proper order to drag hook splint through-hole 11 and drag hook roof through-hole 12, further plays limiting displacement to drag hook 10 through drag hook splint through-hole 11 and drag hook roof through-hole 12, and drag hook 10 top is the slope setting, can change and break away from with the injection molding.
The 4 tops of drag hook thimble board still be equipped with a plurality of drag hook thimble board location axle 13 along the 4 central line symmetries of drag hook thimble board, thimble clamp plate 6 in be equipped with a plurality of thimble clamp plate locating holes 14 along the 6 central line symmetries of thimble clamp plate, drag hook thimble board location axle 13 and thimble clamp plate locating hole 14 the position corresponding and the shape match and be fit for.
In this embodiment, the ejector pin clamp plate 6 does not deviate from the synchronous movement process of the retractor ejector pin plate 4 by the clamping fit between the retractor ejector pin plate positioning shaft 13 and the ejector pin clamp plate positioning hole 14.
Combine fig. 3, fig. 5 to show, thimble board 7 in be equipped with a plurality of thimble board locating holes 15 along thimble board 7 central line symmetry, thimble board locating hole 15 and drag hook thimble board location axle 13 the position corresponding and the shape match and be fit for, 6 tops of thimble clamp be equipped with a plurality of thimble boards along 6 central line symmetries of thimble clamp prevent off-normal axle 16, thimble board 7 in still be equipped with a plurality of about-normal holes 17 of preventing along thimble board 7 central line symmetry, prevent that off-normal hole 17 and thimble board prevent off-normal axle 16's position corresponding.
In this embodiment, through the joint cooperation of thimble board locating hole 15 and drag hook thimble board location axle 13, can be so that thimble board 7 does not take place the skew with 4 synchronous motion in-process of drag hook thimble board, prevent through the thimble board off-normal axis 16 and prevent the joint cooperation between the off-normal hole 17, can be so that drag hook thimble board 4 and thimble clamp plate 6 break away from the back, do not take place circumferential direction between thimble clamp plate 6 and the thimble board 7.
Combine fig. 2, fig. 3 to show, drag hook thimble board 4, ejector pin clamp 6 and thimble board 7 all be the I shape, drag hook thimble board 4 on be equipped with two along the lateral part of drag hook thimble board 4 central line symmetry prevent inclined to one side piece 18, the lateral part prevent inclined to one side piece 18 respectively with ejector pin clamp 6 and thimble board 7 looks butt cooperation.
In this embodiment, drag hook thimble board 4, ejector pin clamp 6 and thimble board 7 all are the I shape, have saved the material, and lateral part prevents inclined to one side piece 18 and cooperates with ejector pin clamp 6 and ejector pin board 7 looks butt respectively, can ensure that drag hook thimble board 4, ejector pin clamp 6 and thimble board 7 synchronous motion time, and the angle skew does not take place for the three.
Referring to fig. 1 and 3, the retractor ejector plate 4 is further provided with two end deviation prevention blocks 19, the end deviation prevention blocks 19 are respectively in abutting fit with the ejector pin clamping plate 6 and the ejector plate 7, and the center line of the end deviation prevention block 19 is perpendicular to the center line of the side deviation prevention block 18.
In this embodiment, the tip deviation prevention block 19 is respectively in abutting fit with the ejector pin clamp plate 6 and the ejector pin plate 7, so that when the drag hook ejector pin plate 4, the ejector pin clamp plate 6 and the ejector pin plate 7 move synchronously, the three do not generate angle deviation.
Referring to fig. 1, a flow distribution plate 20 is arranged on an upper mold plate 1, an injection molding plate 21 is arranged at the top of the flow distribution plate 20, an injection molding main flow passage 22 is arranged in the injection molding plate 21, and the injection molding main flow passage 22 corresponds to the flow distribution plate 20.
In this embodiment, when injection molding is required, the molten material flows into the flow distribution plate 20 from the injection main runner 22 in the injection molding plate 21, and the molten material is subjected to flow distribution injection molding through the flow distribution plate.
Combine fig. 7, fig. 8 to show, flow distribution plate 20 top be equipped with runner 23 of moulding plastics, flow distribution plate 20 bottom be equipped with a plurality of flow distribution pipes 24 that are linked together along flow distribution plate 20 central line symmetry and with runner 23 of moulding plastics, flow distribution pipes 24 corresponding with the position of die cavity, the molten material that flows out from the sprue 22 of moulding plastics enters into flow distribution plate 20 from runner 23 of moulding plastics, evenly pours into flow distribution pipes 24 in after shunting through flow distribution plate 20, finally pours into to the die cavity into, moulds plastics for the speed of moulding plastics, has improved production efficiency.
Referring to fig. 8, the upper mold plate 1 is provided with a plurality of cooling water channels 25 symmetrical along the center line of the upper mold plate 1, two adjacent cooling water channels 25 are parallel to each other, after the injection molding is completed, cold water is injected into the cooling water channels 25, the injection molding machine is cooled through the cooling water channels 25, the two adjacent cooling water channels 25 are parallel to each other, the cooling efficiency is improved, and the cooling is more uniform.
The utility model discloses a theory of operation is:
when needs are moulded plastics, flow into the molten material from the sprue 22 of moulding plastics in the injection moulding board 21, the molten material that flows out from the sprue 22 of moulding plastics enters into flow distribution plate 20 from the runner 23 of moulding plastics, evenly pour into in flow distribution plate 24 after shunting through flow distribution plate 20, finally pour into in the die cavity, mould plastics, after the completion of moulding plastics, pour into cold water into in cooling water channel 25, cool off the injection moulding machine through cooling water channel 25, be parallel to each other between two adjacent cooling water channel 25, the cooling efficiency is improved, make the cooling more even.
After the completion of moulding plastics, carry out the die sinking, drag hook thimble board 4, ejector pin splint 6 and the first synchronous motion of thimble board 7, after ejecting a section distance, drag hook 10 breaks away from with the injection molding, ejector pin splint 6 and thimble board 7 continue to move, thoroughly ejecting the injection molding through thimble 8, accomplish the drawing of patterns, through twice ejecting, can realize getting the piece automatically, the injection molding of avoiding having dark rib can't be ejected completely at ejecting in-process, ejection efficiency has been improved, reduce the ejection fault rate, moreover, the steam generator is simple in structure.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the spirit of the invention.
Although the terms upper template 1, lower template 2, bottom plate 3, hook ejector plate 4, hook ejector assembly 5, ejector clamp plate 6, ejector plate 7, ejector pin 8, hook bottom shaft 9, hook 10, hook clamp plate through hole 11, hook top plate through hole 12, hook ejector plate positioning shaft 13, ejector clamp plate positioning hole 14, ejector plate positioning hole 15, ejector plate anti-deviation shaft 16, anti-deviation hole 17, side anti-deviation block 18, end anti-deviation block 19, splitter plate 20, injection molding plate 21, injection molding main runner 22, injection molding runner 23, splitter 24, cooling water channel 25, etc., are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.
Claims (10)
1. The utility model provides a deep muscle position secondary ejection mechanism of car bumper, includes cope match-plate pattern (1), lower bolster (2) and bottom plate (3), when the compound die, cope match-plate pattern (1) and lower bolster (2) are close to each other and form the die cavity, its characterized in that, bottom plate (3) top be equipped with drag hook thimble board (4), drag hook thimble board (4) top be equipped with a plurality of drag hook thimble assemblies (5) along drag hook thimble board (4) central line symmetry, drag hook thimble assembly (5) corresponding with the position of die cavity, drag hook thimble board (4) and lower bolster (2) between be equipped with ejector pin splint (6) and thimble board (7), thimble board (7) top be equipped with a plurality of thimbles (8).
2. The deep rib position secondary ejection mechanism for the automobile bumper according to claim 1, wherein the drag hook thimble assembly (5) comprises a drag hook bottom shaft (9) arranged at the top of the drag hook thimble plate (4), a drag hook (10) is arranged at the top of the drag hook bottom shaft (9), the drag hook (10) is symmetrically arranged along the center line of the drag hook thimble plate (4), a plurality of drag hook clamping plate through holes (11) symmetrical along the center line of the drag hook thimble plate (4) are arranged in the thimble clamping plate (6), and the positions of the drag hook (10) and the drag hook clamping plate through holes (11) are corresponding.
3. The deep rib position secondary ejection mechanism for the automobile bumper according to claim 2, wherein a plurality of draw hook top plate through holes (12) symmetrical along the center line of the ejector pin plate (7) are formed in the ejector pin plate (7), the draw hook top plate through holes (12) correspond to draw hooks (10), the tops of the draw hooks (10) are obliquely arranged, and the cross sectional areas of the draw hooks (10) are smaller than the cross sectional areas of draw hook bottom shafts (9).
4. The deep rib position secondary ejection mechanism for the automobile bumper according to claim 3, wherein a plurality of drag hook ejector plate positioning shafts (13) symmetrical along a center line of the drag hook ejector plate (4) are further arranged at the top of the drag hook ejector plate (4), a plurality of ejector pin clamp plate positioning holes (14) symmetrical along a center line of the ejector pin clamp plate (6) are arranged in the ejector pin clamp plate (6), and the positions of the drag hook ejector plate positioning shafts (13) and the ejector pin clamp plate positioning holes (14) correspond to each other and are matched in shape.
5. The automobile bumper deep rib position secondary ejection mechanism according to claim 4, characterized in that a plurality of ejector plate positioning holes (15) symmetrical along the center line of the ejector plate (7) are arranged in the ejector plate (7), the ejector plate positioning holes (15) correspond to the positions of the retractor ejector plate positioning shafts (13) in shape matching, a plurality of ejector plate deviation prevention shafts (16) symmetrical along the center line of the ejector plate (6) are arranged at the top of the ejector plate (6), a plurality of deviation prevention holes (17) symmetrical along the center line of the ejector plate (7) are further arranged in the ejector plate (7), and the deviation prevention holes (17) correspond to the positions of the ejector plate deviation prevention shafts (16).
6. The deep rib position secondary ejection mechanism for the automobile bumper according to claim 1, wherein the drag hook ejector plate (4), the ejector retainer plate (6) and the ejector plate (7) are all in an I shape, two side deviation prevention blocks (18) symmetrical along the center line of the drag hook ejector plate (4) are arranged on the drag hook ejector plate (4), and the side deviation prevention blocks (18) are respectively matched with the ejector retainer plate (6) and the ejector plate (7) in a butting mode.
7. The automobile bumper deep rib position secondary ejection mechanism according to claim 6, characterized in that two end deviation prevention blocks (19) are further arranged on the drag hook ejector plate (4), the end deviation prevention blocks (19) are respectively in butt fit with the ejector pin clamping plate (6) and the ejector pin plate (7), and the center line of the end deviation prevention block (19) is perpendicular to the center line of the side deviation prevention block (18).
8. The deep rib position secondary ejection mechanism for the automobile bumper according to claim 1, wherein a splitter plate (20) is arranged on the upper mold plate (1), an injection molding plate (21) is arranged at the top of the splitter plate (20), an injection molding main runner (22) is arranged in the injection molding plate (21), and the injection molding main runner (22) corresponds to the splitter plate (20).
9. The deep rib secondary ejection mechanism for the automobile bumper as claimed in claim 8, wherein an injection molding runner (23) is arranged at the top of the splitter plate (20), a plurality of splitter tubes (24) which are symmetrical along the center line of the splitter plate (20) and communicated with the injection molding runner (23) are arranged at the bottom of the splitter plate (20), and the splitter tubes (24) correspond to the cavities in position.
10. The deep rib position secondary ejection mechanism for the automobile bumper according to claim 1, wherein a plurality of cooling water channels (25) which are symmetrical along the central line of the upper template (1) are arranged in the upper template (1), and two adjacent cooling water channels (25) are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758943.5U CN211389997U (en) | 2019-10-18 | 2019-10-18 | Deep rib position secondary ejection mechanism for automobile bumper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758943.5U CN211389997U (en) | 2019-10-18 | 2019-10-18 | Deep rib position secondary ejection mechanism for automobile bumper |
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| CN211389997U true CN211389997U (en) | 2020-09-01 |
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| CN201921758943.5U Active CN211389997U (en) | 2019-10-18 | 2019-10-18 | Deep rib position secondary ejection mechanism for automobile bumper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519146A (en) * | 2020-11-20 | 2021-03-19 | 上海良勤实业有限公司 | Injection mold convenient to drawing of patterns |
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2019
- 2019-10-18 CN CN201921758943.5U patent/CN211389997U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519146A (en) * | 2020-11-20 | 2021-03-19 | 上海良勤实业有限公司 | Injection mold convenient to drawing of patterns |
| CN112519146B (en) * | 2020-11-20 | 2022-09-13 | 上海良勤实业有限公司 | Injection mold convenient to drawing of patterns |
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