CN109397627A - A kind of side slide block structure of motor faceplate seat mold - Google Patents
A kind of side slide block structure of motor faceplate seat mold Download PDFInfo
- Publication number
- CN109397627A CN109397627A CN201811459412.6A CN201811459412A CN109397627A CN 109397627 A CN109397627 A CN 109397627A CN 201811459412 A CN201811459412 A CN 201811459412A CN 109397627 A CN109397627 A CN 109397627A
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- China
- Prior art keywords
- sliding block
- sliding
- block
- side slide
- slide block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 210000003205 muscle Anatomy 0.000 abstract description 4
- 230000011218 segmentation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C2045/445—Removing or ejecting moulded articles for undercut articles using the movable undercut forming element for ejection of the moulded article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention relates to a kind of side slide block structures of motor faceplate seat mold, including the wear-resistant block being fixed in injection mold, and the first sliding block and the second sliding block that can be slided along its surface level, the limit hole of perforation is equipped on the second sliding block, the second sliding block can be resisted by being additionally provided with one end across limit hole, the other end connects the contour column of limit of the first sliding block, second sliding block is equipped with sliding slot vertically, it is equipped with and moves up and down along it and top is equipped with the third sliding block of vertically hook in sliding slot, the latch that can put in sliding slot and contact third sliding block lower part is also fixed on first sliding block, it is slidably matched between third sliding block and latch, and the contact surface of the two is in towards far from the first inclined slope surface in sliding block direction.Compared with prior art, the present invention can smoothly complete each movement depanning campaign by moving by several times to slide block structure segmentation, meanwhile, it can also solve the problems, such as in the case where product muscle bit comparison depth that quality of mold release is bad etc..
Description
Technical field
The invention belongs to mold field shaping techniques, are related to a kind of side slide block structure of motor faceplate seat mold.
Background technique
Currently, having the mold in overhead kick region for the side of shaped article, the lateral whole sliding block of design is generally required, but
It is that the side of some shaped articles has the hook in vertical direction, in this way, just blocking side slide block and causing it that can not go out
Mould, and if cancelling this coupler construction, it will affect the assembly of shaped article Yu other product components, consumer product be not achieved
Design requirement.In addition, being all often once to be opened, will lead to product in this way when existing lateral whole sliding block is deviate from outward
Type face is vulnerable to damage.The present invention is based on problem above and proposes.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of motor faceplate seat moulds
The side slide block structure of tool.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of side slide block structure of motor faceplate seat mold, including the wear-resistant block being fixed in injection mold, Yi Jike
Along the first sliding block and the second sliding block of the sliding of its surface level, it is equipped with the limit hole of perforation on the second sliding block, passes through the limit
Position hole is additionally provided with that one end can resist second sliding block, the other end connects the contour column of limit of first sliding block, and described second
Sliding block is equipped with sliding slot vertically, is equipped with and moves up and down along it and top is equipped with vertically hook in sliding slot
Third sliding block is also fixed with the locking that can put in the sliding slot and contact third sliding block lower part on first sliding block
Block is slidably matched between the third sliding block and latch, and the contact surface of the two is in towards inclined far from the first sliding block direction
Slope surface.
When injection mold is opened, the first sliding block is driven to move in the horizontal direction, the second sliding block just starts to remain stationary, together
When, latch with the first sliding block to lateral abjection, since latch and third sliding block are in the contact relation that is slidably matched of slope surface, when
During latch is displaced outwardly, will drive with the second sliding block it is vertical to the third sliding block being slidably matched vertically to
Lower movement, at this point, the hook being arranged on third sliding block can be detached from injection mold, and simultaneously, the completion of the first sliding block is once opened
Mould.First sliding block continues to lateral movement, due to limiting the arrangement of contour column, can start to drive the second sliding block stood also together
It is mobile, realize twice-die-opening.
Further, the length of the contour column of limit is greater than the length of limit hole, it is ensured that the first sliding block and second is slided
Block can be achieved to be moved away, and guarantee the realization for being opened process twice.
Further, first sliding block is equipped with the inclined hole of perforation, is equipped with and slides along and top in inclined hole
The oblique top column for connecting injection mold upper mold can be effectively by the vertical direction of upper mold using the cooperation of inclined hole and oblique top column
Conversion of motion is the driving force for driving the first sliding block to move in the horizontal direction.
Further, along the first sliding block moving direction, the two sides of first sliding block and the second sliding block are machined with respectively
Step groove there also is provided in close contact therewith on the step groove and be fixed on the press strip in injection mold.
Further, the press strip is fixed in injection mold by bolt structure.
Further, it hollows out to form empty slot in the middle part of second sliding block, the end face of first sliding block is equipped with
The protrusion cooperated with the empty slot, and when injection mould closing, the protrusion of the first sliding block extend into the second sliding block empty slot
It is interior, and cooperatively form the side cavity surface of injection mold.Matched using the first sliding block and the second sliding block that can be moved away and is combined into
Side cavity surface is opened twice using mobile realize stage by stage of the first sliding block and the second sliding block, deep for muscle bit comparison
Injecting products, it is ensured that its quality of mold release.
Further, direction is skidded off outward along the first sliding block, there also is provided postive stop baffle in the front end of the first sliding block, it can be with
Limit the shift motion of the first sliding block.
Further, be additionally provided with it on second sliding block with injection mold can the shutter member that connect of breakaway-element, open
The form of closing member is primarily to guarantee that the movement of the first sliding block and the second sliding block can separate, i.e., when the first sliding block just starts to move
When, it opens shutter member and at this point, the second sliding block can remain stationary state, and works as that is, so that the second sliding block is fixed with injection mold
When shutter member is closed, being fixedly connected between the second sliding block and injection mold is cut off, at this point, when the first sliding block is moved to one
Determine degree while resisting the second sliding block (limit the end of contour column), the first sliding block can be moved together with the second sliding block.
Further, the lower part of the third sliding block is equipped with dovetail groove, and the top of the latch is equipped with and the dovetail
The protrusion that slot is slidably matched can convert the movement of the horizontal direction of latch to and third sliding block is driven to hang down by dovetail groove
Histogram to driving force.
Further, the latch is wedge shaped.
Compared with prior art, the present invention by using with different mobile forms and moving direction the first sliding block,
Two sliding blocks and third sliding block form entire side slide block structure, in the process of die sinking can according to one section section segment movement of order,
Each movement depanning campaign can be effectively completed, solves the problems, such as that the hook of vertical direction influences smoothly demoulding, in addition, for
For the injecting products of muscle bit comparison depth, the structure of die sinking can also effectively improve its type face quality of mold release by several times.
Detailed description of the invention
Fig. 1 is that side slide block structure is mounted on the positive diagrammatic cross-section in injection mold；
Fig. 2 is the diagrammatic cross-section that side slide block structure is mounted on the side in injection mold；
Fig. 3 is stereoscopic schematic diagram of the side slide block structure in molding；
Fig. 4 is schematic top plan view of the side slide block structure in molding；
Fig. 5 is the diagrammatic cross-section in the direction A-A in Fig. 4；
Fig. 6 is schematic front view of the side slide block structure in molding；
Fig. 7 is schematic diagram of the side slide block structure when being opened first time；
Fig. 8 is schematic diagram of the side slide block structure when being opened for second；
Fig. 9 is the connection schematic diagram of third sliding block and latch；
Figure 10 is the structural schematic diagram of press strip；
Description of symbols in figure:
1- side slide block structure, the second sliding block of 101-, the first sliding block of 102-, 103- third sliding block, 104- latch, 105-
Oblique top column, 106- postive stop baffle, 107- press strip, the contour column of 108- limit, 109- shutter member, 110- wear-resistant block, 111- protrusion,
112- bolt structure, 2- injection mold.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1
A kind of side slide block structure of motor faceplate seat mold, structure is referring to shown in Fig. 3-Fig. 6, including is fixed on injection molding
Wear-resistant block 110 in mold 2, and the first sliding block 102 and the second sliding block 101 that can slide along its surface level are sliding second
Block 101 is equipped with the limit hole of perforation, and the second sliding block 101, other end connection first can be resisted by being additionally provided with one end across limit hole
The contour column 108 of the limit of sliding block 102, the second sliding block 101 are equipped with sliding slot vertically, are equipped with above and below it in sliding slot
Mobile and top is equipped with the third sliding block 103 of vertically hook, is also fixed with and can put in sliding slot on the first sliding block 102
And contact the wedge shaped latch 104 of 103 lower part of third sliding block, it is shown in Figure 9, third sliding block 103 and latch 104 it
Between be slidably matched, and the contact surface of the two is in the lower part of third sliding block 103 towards far from the inclined slope surface in 102 direction of the first sliding block
Equipped with dovetail groove, the top of latch 104 is equipped with the protrusion being slidably matched with dovetail groove can be by latch by dovetail groove
The movement of 104 horizontal direction is converted into the driving force for driving 103 vertical direction of third sliding block.
In the present embodiment, the length for limiting contour column 108 is greater than the length of limit hole, it is ensured that the first sliding block 102 and the
Two sliding blocks 101, which can be realized, to be moved away, and guarantees the realization for being opened process twice.
Referring again to shown in Fig. 3, the first sliding block 102 is equipped with the inclined hole of perforation, be equipped in inclined hole slide along and
The oblique top column 105 that top connects 2 upper mold of injection mold can be effectively by upper mold using the cooperation of inclined hole and oblique top column 105
The conversion of motion of vertical direction is the driving force for driving the first sliding block 102 to move in the horizontal direction.
Meanwhile in order to ensure the first sliding block 102 and the second sliding block 101 are moved along direction initialization, referring again to shown in Fig. 2,
Along 102 moving direction of the first sliding block, the two sides of the first sliding block 102 and the second sliding block 101 are machined with step groove, step groove respectively
On there also is provided press strip 107 that is in close contact therewith and being fixed in injection mold 2, so as to limit 102 He of the first sliding block
Movement of second sliding block 101 in vertical direction and the left and right sides.Press strip 107 can be fixed on injection mold 2 by bolt structure 112
It is interior, it is shown in Figure 10.
Referring again to shown in Fig. 3, the middle part of the second sliding block 101 hollows out to form empty slot, and the end face of the first sliding block 102 is equipped with
The protrusion 111 cooperated with empty slot, and when injection mold 2 molds, it is sliding that the protrusion 111 of the first sliding block 102 extend into second
In 101 empty slot of block, and cooperatively form the side cavity surface of injection mold 2.Utilize the first sliding block 102 and second that can be moved away
Sliding block 101 is realized twice with side cavity surface is combined into using the first sliding block 102 and the mobile stage by stage of the second sliding block 101
Die sinking, for the injecting products of muscle bit comparison depth, it is ensured that its quality of mold release.
Referring again to Fig. 3-Fig. 5, direction is skidded off outward along the first sliding block 102, there also is provided in the front end of the first sliding block 102
Postive stop baffle 106 can limit the shift motion of the first sliding block 102.
Please referring to Fig. 3, be additionally provided with it on the second sliding block 101 with injection mold 2 can the shutter member that connect of breakaway-element
109, the form of shutter member 109 is primarily to guarantee that the movement of the first sliding block 102 and the second sliding block 101 can separate, i.e., when the
When one sliding block 102 just starts mobile, open shutter member 109, i.e., so that the second sliding block 101 and injection mold 2 are fixed, at this point, the
Two sliding blocks 101 can remain stationary state, and when shutter member 109 is closed, consolidating between the second sliding block 101 and injection mold 2
Fixed connection is cut off, at this point, (end for limiting contour column 108 resists second when the first sliding block 102 is moved to a certain degree
When sliding block 101), the first sliding block 102 can be moved together with the second sliding block 101.
Side slide block structure 1 is mounted on the schematic diagram in injection mold 2 referring to figure 1 and figure 2, and injection mold 2 is opened
When, upper mold is moved during moving up by the first sliding block 102 of drive of oblique top column 105 in the horizontal direction, the second sliding block
101 just start to remain stationary under the action of shutter member 109, and latch 104 takes off to lateral movement and gradually with the first sliding block 102
From the second sliding block 101, since latch 104 and third sliding block 103 are in the contact relation that is slidably matched of slope surface, when latch 104
During being displaced outwardly, will drive with the second sliding block 101 it is vertical to the third sliding block 103 being slidably matched vertically to
Lower movement, at this point, the hook being arranged on third sliding block 103 can skid off, and simultaneously, the protrusion 111 of the first sliding block 102
It is lateral to be detached from injecting products, primary die sinking is completed, it is shown in Figure 7.First sliding block 102 continues to lateral movement, due to limit
The arrangement of contour column 108 can start to drive the second sliding block 101 (the second sliding block of the disconnection of shutter member 109 at this time 101 and injection mold 2
Connection) and third sliding block 103 etc. also move together and be detached from injecting products, skid off the overhead kick region of product, realize secondary opens
Mould, it is shown in Figure 8.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (10)
1. a kind of side slide block structure of motor faceplate seat mold, which is characterized in that wear-resisting in injection mold including being fixed on
Block (110), and the first sliding block (102) and the second sliding block (101) that can be slided along its surface level, in the second sliding block (101)
It is equipped with the limit hole of perforation, second sliding block (101), other end connection can be resisted by being additionally provided with one end across the limit hole
The contour column of limit (108) of first sliding block (102), second sliding block (101) are equipped with sliding slot vertically,
It is equipped in sliding slot and moves up and down along it and top is equipped with the third sliding block (103) of vertically hook, first sliding block
(102) latch (104) that can put in the sliding slot and contact third sliding block (103) lower part, institute are also fixed on
It states and is slidably matched between third sliding block (103) and latch (104), and the contact surface of the two is in towards far from the first sliding block (102)
The inclined slope surface in direction.
2. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that the limit
The length of contour column (108) is greater than the length of limit hole.
3. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that described
One sliding block (102) be equipped with perforation inclined hole, be equipped in inclined hole slide along and top connection injection mold upper mold it is oblique
Top pillar (105).
4. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that sliding along first
The two sides of block (102) moving direction, first sliding block (102) and the second sliding block (101) are machined with step groove respectively, described
It there also is provided in close contact therewith on step groove and be fixed on the press strip in injection mold (107).
5. a kind of side slide block structure of motor faceplate seat mold according to claim 4, which is characterized in that the press strip
(107) it is fixed in injection mold by bolt structure.
6. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that described
Two sliding blocks hollow out to form empty slot in the middle part of (101), and the end face of first sliding block (102) is equipped with to be cooperated with the empty slot
Protrusion (111), and when injection mould closing, the protrusion (111) of the first sliding block (102) extend into the second sliding block (101)
In empty slot, and cooperatively form the side cavity surface of injection mold.
7. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that sliding along first
Block (102) skids off direction outward, there also is provided postive stop baffle (106) in the front end of the first sliding block (102).
8. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that described
Being additionally provided on two sliding blocks (101) by it with injection mold can the shutter member (109) that connect of breakaway-element.
9. a kind of side slide block structure of motor faceplate seat mold according to claim 1, which is characterized in that the third
The lower part of sliding block (103) is equipped with dovetail groove, and the top of the latch (104) is convex equipped with being slidably matched with the dovetail groove
It rises.
10. according to claim 1 or a kind of 9 side slide block structures of motor faceplate seat mold stated, which is characterized in that the lock
Stops (104) is wedge shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459412.6A CN109397627B (en) | 2018-11-30 | 2018-11-30 | Lateral sliding block structure of motor panel seat die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811459412.6A CN109397627B (en) | 2018-11-30 | 2018-11-30 | Lateral sliding block structure of motor panel seat die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109397627A true CN109397627A (en) | 2019-03-01 |
| CN109397627B CN109397627B (en) | 2024-01-09 |
Family
ID=65456732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811459412.6A Active CN109397627B (en) | 2018-11-30 | 2018-11-30 | Lateral sliding block structure of motor panel seat die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109397627B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407299A (en) * | 2022-03-07 | 2022-04-29 | 宁波固德模塑有限公司 | Forming die of many draw-in grooves work piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202922908U (en) * | 2012-10-30 | 2013-05-08 | 宁波双林模具有限公司 | Core pulling device of injection mould for automobile engine cover with side wall reversed structure |
| CN106042297A (en) * | 2016-07-28 | 2016-10-26 | 深圳创维精密科技有限公司 | Multi-angle core pulling mechanism for injection mold |
| CN106738702A (en) * | 2017-02-17 | 2017-05-31 | 上海甬兴塑胶有限公司 | A kind of big sliding block band secondary slide block device of two layers of injection mold |
| CN108582674A (en) * | 2018-05-17 | 2018-09-28 | 华域视觉科技(上海)有限公司 | The secondary demolding mechanism of injection mold |
| CN209257385U (en) * | 2018-11-30 | 2019-08-16 | 上海甬兴塑胶有限公司 | The side slide block structure of motor faceplate seat mold |
-
2018
- 2018-11-30 CN CN201811459412.6A patent/CN109397627B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202922908U (en) * | 2012-10-30 | 2013-05-08 | 宁波双林模具有限公司 | Core pulling device of injection mould for automobile engine cover with side wall reversed structure |
| CN106042297A (en) * | 2016-07-28 | 2016-10-26 | 深圳创维精密科技有限公司 | Multi-angle core pulling mechanism for injection mold |
| CN106738702A (en) * | 2017-02-17 | 2017-05-31 | 上海甬兴塑胶有限公司 | A kind of big sliding block band secondary slide block device of two layers of injection mold |
| CN108582674A (en) * | 2018-05-17 | 2018-09-28 | 华域视觉科技(上海)有限公司 | The secondary demolding mechanism of injection mold |
| CN209257385U (en) * | 2018-11-30 | 2019-08-16 | 上海甬兴塑胶有限公司 | The side slide block structure of motor faceplate seat mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407299A (en) * | 2022-03-07 | 2022-04-29 | 宁波固德模塑有限公司 | Forming die of many draw-in grooves work piece |
| CN114407299B (en) * | 2022-03-07 | 2024-06-11 | 宁波固德模塑有限公司 | Forming die of many draw-in grooves work piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109397627B (en) | 2024-01-09 |
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