CN112829233B - Large-caliber horn mesh ejection mechanism and method - Google Patents
Large-caliber horn mesh ejection mechanism and method Download PDFInfo
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- CN112829233B CN112829233B CN202110177086.5A CN202110177086A CN112829233B CN 112829233 B CN112829233 B CN 112829233B CN 202110177086 A CN202110177086 A CN 202110177086A CN 112829233 B CN112829233 B CN 112829233B
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- plate
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- locking device
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- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000243 solution Substances 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29L2031/3418—Loud speakers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a large-caliber horn net ejection mechanism and an ejection method, wherein the large-caliber horn net ejection mechanism comprises the following components: the end face of the molding block is provided with a plurality of bosses for injection molding of the speaker meshes; the molding block comprises a molding block main body and a plurality of jacking blocks, wherein a plurality of mounting grooves are formed in the side surface, close to the boss, of the molding block main body, and the jacking blocks are arranged in the mounting grooves; the first ejection assembly comprises a first ejector plate and an ejector block rod fixed on the first ejector plate, the ejector block is installed at the end part of the ejector block rod, and the first ejection assembly is used for driving the ejector block to be staggered with the forming block main body up and down. According to the ejection method disclosed by the invention, the horn mesh is separated from the boss on the forming block in a divided manner, so that the tightening force of the horn mesh to the boss is reduced, the horn mesh is prevented from being adhered to the forming block, and meanwhile, the ejector pin is prevented from ejecting through the horn mesh.
Description
Technical Field
The invention relates to the technical field of automobile molds, in particular to a large-caliber horn mesh ejection mechanism and a method.
Background
In the automobile manufacturing process, an automobile interior door panel is generally manufactured by an injection molding method. To save cost, a speaker mesh for covering the outside of the acoustic speaker is generally integrally formed with the interior door panel. Along with the improvement of the sound quality requirements of users on automobiles, the requirements of the users on the sound passing rate of the speaker net are higher and higher, and the increase of the sound passing rate of the speaker net requires the increase of the diameter of the speaker net and the increase of the number of meshes on the speaker net. The traditional injection mold for the interior door plate is characterized in that a plurality of bosses with the same shape as meshes of the horn are arranged on a mold core, and after injection molding, the horn net is ejected out through a small ejector pin or ejector block; in the demolding process, as the horn net and the boss have larger contact area, the tightening force of the horn net to the mold is larger, and the sticking mold is easy to generate. And because the small thimble arranged below the horn net is thinner, under the condition that the horn net is tightly held by the die, the condition that the small thimble is propped through the horn net is easy to occur, and the quality of the interior door plate is seriously affected.
Disclosure of Invention
The invention aims to provide a large-caliber horn net ejection mechanism and a large-caliber horn net ejection method, which can solve the problems of die sticking, jacking and the like in the manufacturing process of a large-caliber horn net in the prior art.
The technical scheme of the invention is realized as follows:
a large-caliber horn mesh ejection mechanism comprises
The end face of the molding block is provided with a plurality of bosses for injection molding of the speaker meshes;
the molding block comprises a molding block main body and a plurality of jacking blocks, wherein a plurality of mounting grooves are formed in the side surface, close to the boss, of the molding block main body, and the jacking blocks are arranged in the mounting grooves;
The first ejection assembly comprises a first ejector plate and an ejector block rod fixed on the first ejector plate, the ejector block is installed at the end part of the ejector block rod, and the first ejection assembly is used for driving the ejector block to be staggered with the forming block main body up and down.
According to the large-caliber horn mesh ejection mechanism, the forming block for forming the horn mesh is divided into the forming block main body and the plurality of ejector blocks, the horn mesh is separated from the forming block twice during demolding, the tightening force of the horn mesh on the mold during each separation is reduced, and the adhesion between the horn mesh and the mold is avoided.
Further, the plurality of mounting grooves are distributed on the molding block body.
Further, the first ejection assembly further comprises a spring plate and an elastomer arranged below the spring plate; the upper surface of the spring plate is provided with a core, the spring plate is provided with a through groove penetrating up and down, and the forming block is arranged in the through groove;
The ejection mechanism further comprises a fixed plate, the forming block main body is fixed on the fixed plate, the elastic plate is arranged above the fixed plate, and two ends of the elastic body are respectively abutted against the elastic plate and the fixed plate;
The spring plate is connected with the first ejector plate through the second ejection assembly, and the first ejector plate moves upwards simultaneously when the spring plate moves upwards.
Further, the second ejection assembly comprises a second ejector plate, a first mold locking device and a second mold locking device;
The first mold locking device is connected with the second ejector plate and the elastic plate, and the second mold locking device is connected with the first ejector plate and the second ejector plate.
Further, the ejection mechanism further comprises a small thimble, and the small thimble passes through the forming block to be in contact with the horn mesh;
the small thimble is fixed on the second thimble plate.
Further, the ejection mechanism further comprises a large ejector pin, and the large ejector pin passes through the forming block and is contacted with the position without meshes on the horn net;
the large thimble is fixed on the second thimble plate.
Further, the ejection mechanism further comprises a driving device, wherein the driving device is connected with the second ejector plate and is used for driving the second ejector plate to move upwards.
The invention also provides an ejection method which is applied to the large-caliber horn mesh ejection mechanism, and the method comprises the following steps:
step 1, primary ejection: the elastic plate moves upwards under the action of the elastic body, the elastic plate drives the first ejector pin plate and the second ejector pin plate to move upwards through the first mold locking device and the second mold locking device, the elastic plate stops moving after the upward movement completes a first stroke, and the first mold locking device is unlocked; the forming block main body fixed on the fixing plate is separated from the horn net;
Step 2, secondary ejection: the second ejector plate moves upwards under the action of the driving device, the second ejector plate drives the first ejector plate to move upwards together through the second mold locking device, after the first ejector plate moves upwards to complete a second stroke, the spring plate is separated from the horn mesh, and the second mold locking device is unlocked;
Step 3, three ejection: the second ejector plate continues to move upwards under the action of the driving device, and after the second ejector plate moves upwards to complete a third stroke, the ejector block is separated from the horn mesh.
The ejection mechanism and the ejection method for the large-caliber horn mesh have the following advantages:
1. the horn mesh is separated from the boss on the forming block in a divided manner, so that the tightening force of the horn mesh to the boss is reduced, the horn mesh is prevented from being adhered to the forming block, and meanwhile, the ejector pin is prevented from ejecting through the horn mesh;
2. Meanwhile, the large thimble and the small thimble are suitable for increasing the contact area between the die and the horn mesh, and further preventing the small thimble from jacking through the horn mesh;
3. the separation of the molding block main body and the speaker net is completed by using the spring plate, so that the driving force required by ejection is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic view of the structure of a molding block of the present invention;
FIG. 2 is a schematic view of the structure of the ejector block, ejector rod and ejector pin of the present invention;
FIG. 3 is a cross-sectional view of the large caliber horn ejection mechanism of the present invention in a closed mold;
FIG. 4 is a cross-sectional view of the large caliber horn ejection mechanism of the present invention once ejected;
FIG. 5 is a cross-sectional view of the large caliber horn ejection mechanism of the present invention in a secondary ejection;
Fig. 6 is a cross-sectional view of the large-caliber horn ejection mechanism of the present invention in three ejections.
Wherein, 1, a forming block, 2, a first ejector plate, 3, an ejector rod, 4, an ejector plate, 5, a fixed plate, 6, a second ejector plate, 71, a first mold locking device, 72 and a second mold locking device, 81, small ejector pins, 82, large ejector pins, 9, a horn net, 10, a driving device, 11, a boss, 12, a forming block main body, 13, an ejector block, 14, a mounting groove, 41, an elastic body, 42 and a through groove.
Detailed Description
The technical solution provided by the present invention is described in more detail below with reference to fig. 1 to 4.
As shown in FIG. 1, the large-caliber horn ejection mechanism comprises a molding block 1, wherein a plurality of bosses 11 for injection molding horn mesh 9 holes are arranged on the end surface of the molding block 1, the molding block 1 comprises a molding block main body 12 and a plurality of ejector blocks 13, a plurality of mounting grooves are formed in the side surface, close to the bosses 11, of the molding block main body 12, and the ejector blocks 13 are arranged in the mounting grooves; the first ejection assembly comprises a first ejector plate 2 and an ejector block rod 3 fixed on the first ejector plate 2, the ejector block 13 is mounted at the end part of the ejector block rod 3, and the first ejection assembly is used for driving the ejector block 13 to be staggered up and down with the forming block main body 12.
As shown in fig. 2, the bottom of the top block 13 is provided with a socket, the top of the top block rod 3 is provided with an inserting block, and the top block 13 is fixed with the top block rod 3 through a bolt after being inserted. The boss 11 is preferably in a truncated cone shape with a narrow upper part and a wide lower part, so that the forming block 1 is conveniently separated from the horn mesh holes of the horn mesh 9 downwards.
According to the large-caliber horn mesh ejection mechanism, the forming block 1 for forming the horn mesh 9 is divided into the forming block main body 12 and the plurality of ejection blocks 13, the horn mesh 9 is separated from the forming block 1 twice during demolding, the packing force of the holes of the horn mesh 9 on the die during each separation is reduced, and the adhesion between the holes of the horn mesh 9 and the die is avoided.
Preferably, as shown in fig. 1, the plurality of mounting grooves are distributed on the molding block body 12. The plurality of mounting grooves are distributed in a dispersed manner, so that the plurality of top blocks 13 can be dispersed on the forming block 1, and the stress is more uniform when the top blocks 13 are separated from the forming block main body 12.
Specifically, the first ejection assembly further includes a spring plate 4 and an elastic body 41 disposed below the spring plate 4; the upper surface of the spring plate 4 is provided with a core, the spring plate 4 is provided with a through groove 42 penetrating up and down, and the forming block 1 is arranged in the through groove 42; the ejection mechanism further comprises a fixing plate, the forming block main body 12 is fixed on the fixing plate, the elastic plate 4 is arranged above the fixing plate, and two ends of the elastic body are respectively propped against the elastic plate 4 and the fixing plate. And the first ejector plate 2 moves upward at the same time as the ejector plate 4 moves upward.
As shown in fig. 4, after the mold is opened, the spring plate 4 moves downward by the elastic body. H1 in the figure represents the first stroke of movement of the spring plate 4. Specifically, there is spacing recess the side of springboard 4, spacing recess cooperatees with the spacing hasp of fixing on the fixed plate, works as springboard 4 has accomplished first stroke, spacing detain with the recess chucking, springboard 4 stops moving. At this time, since the molding block body 12 is fixed to the fixed plate without moving upward, the molding block 1 is separated from the speaker net 9. And as the first ejector plate 2 moves upwards simultaneously when the spring plate 4 moves upwards, the ejector block 13 moves upwards together with the horn mesh 9 under the pushing of the ejector block rod 3 and the first ejector plate 2, so that the ejector block 13 is remained in the horn mesh 9.
Wherein the second ejection assembly comprises a second ejector plate 6, a first mold locking device 71 and a second mold locking device 72;
the first mold locking device 71 connects the second ejector plate 2 and the elastic plate 4, and the second mold locking device 72 connects the first ejector plate 2 and the second ejector plate 6.
The first mold locking device 71 comprises a first inserted link, a first pull link and a first elastic block; the first inserting rod is fixedly arranged, one side of the first inserting rod is provided with a first ejector block, and the first ejector block is telescopically arranged on the side face of the second ejector plate; the first pull rod is fixed on the side face of the spring plate, and a first draw hook is arranged on the side face of the first pull rod. When the spring plate moves upwards under the elastic action of the elastic body, the first draw hook is propped against the bottom surface of the spring block, and the second ejector pin plate is pulled to move upwards; when the spring plate rises for a certain distance, the second ejector pin plate moves upwards until the first spring block is opposite to the first ejector block, the first spring block is retracted into the spring plate, and the spring plate and the second ejector pin plate can move relatively.
The second mold locking device 72 comprises a second inserting rod, a second pull rod, a second elastic block and a telescopic spring, the second inserting rod is fixedly arranged, a groove is formed in one side of the second inserting rod, the second elastic block is fixed on the side face of the first ejector plate, the second elastic block can move along the direction perpendicular to the second inserting rod under the action of the telescopic spring, the second pull rod is fixed on the side face of the second ejector plate, a second draw hook is arranged on the side face of the second pull rod, and the second pull rod penetrates through the second slider and the top face of the second draw hook is propped against the bottom face of the second slider. When the second thimble plate moves upwards, the second drag hook is matched with the second sliding block to drive the first thimble plate to move upwards simultaneously; when the second ejector plate moves for a certain distance, the first ejector plate moves upwards until the second ejector block is opposite to the second ejector block, the second ejector block is inserted into the groove of the second inserting rod, so that the second pull rod can freely move in the second sliding block, and the first ejector plate and the second ejector plate can move relatively.
In addition to the specific forms of the first mold locking device 71 and the second mold locking device 72 described above, other configurations of mold locking devices may be adopted, and the movement process of the spring plate 4, the first ejector plate 2, and the second ejector plate 6 may be realized. Other configurations of mold-locking devices can be employed by those skilled in the art based on their knowledge in the art.
In order to separate the ejector block 13 from the speaker net 9, the ejector mechanism further comprises a small ejector pin 81 and a second ejector component, wherein the small ejector pin 81 passes through the forming block 1 to be in contact with the speaker net 9; specifically, the small thimble 81 is in contact with the frame between the meshes on the horn net 9. The small ejector pins 81 are fixed on the second ejector plate 6.
The ejector mechanism further comprises a driving device 10, and the driving device 10 is connected with the second ejector plate 6 and is used for driving the second ejector plate 6 to move upwards.
Specifically, as shown in fig. 3, in this embodiment, the driving device 10 is a KO ram, and since the KO ram is a commonly used ejection power source in an injection mold, the present invention does not expand the KO ram.
In order to improve the strength of the speaker net 9 or print trademark and characters on reserved positions, speaker net 9 holes are not arranged in the middle positions of some speaker nets 9, and aiming at the speaker net 9, in order to improve the supporting force of a mould on the speaker net 9, the ejection mechanism of the invention further comprises a large ejector pin 82, and the large ejector pin 82 passes through the forming block 1 to be in contact with the positions without meshes on the speaker net 9; the large ejector pins 82 are fixed to the second ejector plate 6. Because the large thimble 82 and the small thimble 81 are communicated at the same time, the stress area of the end face of the large thimble 82 pair is larger, the pressure intensity is smaller, and the small thimble 81 can be further prevented from puncturing the horn mesh 9.
The invention also provides an ejection method which is suitable for the large-caliber horn mesh ejection mechanism, and the method comprises the following steps:
Step 1, primary ejection: as shown in fig. 4, the elastic plate 4 moves upwards under the action of the elastic body, and meanwhile, the elastic plate 4 drives the first ejector plate and the second ejector plate to move upwards together through the first mold locking device 71 and the second mold locking device 72, the elastic plate 4 stops moving after the upward movement completes a first stroke, and the first mold locking device 71 is unlocked; the forming block main body 12 fixed on the fixing plate is separated from the horn mesh 9; wherein H1 in fig. 4 represents the first stroke.
Step 2, secondary ejection: as shown in fig. 5, the second ejector plate 6 moves upwards under the action of the driving device 10, and meanwhile, the second ejector plate 6 drives the first ejector plate 2 to move upwards together through the second mold locking device 72, after the first ejector plate moves upwards to complete a second stroke, the ejector plate 4 is separated from the horn mesh 9, and the second mold locking device 72 is unlocked; wherein H2 in fig. 5 represents the second stroke.
Step 3, three ejection: as shown in fig. 6, the second ejector plate continues to move upwards under the action of the driving device 10, and after the second ejector plate moves upwards to complete the third stroke, the ejector block 13 is separated from the speaker mesh 9. Wherein H3 in fig. 6 represents the third stroke.
Before the above steps, the method further comprises a step of die opening. By adopting the ejection method, the forming block main body with most bosses can be separated from the horn net, the ejector block with a small part of bosses is left for supporting the horn net, then the ejector block is separated from the horn net, the small ejector pins eject the horn net, the bosses on the horn net and the forming block are separated in a separated mode, the tightening force of the horn net to the bosses is reduced, the horn net is prevented from being adhered to the forming block, and meanwhile the ejector pins are prevented from ejecting through the horn net.
In the description of the present invention, it should be understood that the terms "vertical," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is for convenience only as well as to facilitate a description of the invention, and is not intended to have a special meaning unless otherwise indicated.
The present invention is not limited to the embodiments described above, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (3)
1. A large caliber horn mesh ejection mechanism, comprising:
The end face of the molding block is provided with a plurality of bosses for injection molding of the speaker meshes;
the molding block comprises a molding block main body and a plurality of jacking blocks, wherein a plurality of mounting grooves are formed in the side surface, close to the boss, of the molding block main body, and the jacking blocks are arranged in the mounting grooves;
The first ejection assembly comprises a first ejector plate and an ejector block rod fixed on the first ejector plate, the ejector block is arranged at the end part of the ejector block rod, and the first ejection assembly is used for driving the ejector block and the forming block main body to be staggered up and down;
the mounting grooves are distributed on the molding block main body;
the first ejection assembly further comprises a spring plate and an elastomer arranged below the spring plate; the upper surface of the spring plate is provided with a core, the spring plate is provided with a through groove penetrating up and down, and the forming block is arranged in the through groove;
The ejection mechanism further comprises a fixed plate, the forming block main body is fixed on the fixed plate, the elastic plate is arranged above the fixed plate, and two ends of the elastic body are respectively abutted against the elastic plate and the fixed plate;
the spring plate is connected with the first ejector plate through a second ejection assembly, and the first ejector plate moves upwards simultaneously when the spring plate moves upwards;
The second ejection assembly comprises a second ejector plate, a first mold locking device and a second mold locking device;
The first mold locking device is connected with the second ejector plate and the elastic plate, and the second mold locking device is connected with the first ejector plate and the second ejector plate;
The ejection mechanism further comprises a driving device, wherein the driving device is connected with the second ejector plate and is used for driving the second ejector plate to move upwards;
the ejection mechanism further comprises a small ejector pin, and the small ejector pin penetrates through the forming block to be in contact with the horn mesh;
The small ejector pin is fixed on the second ejector pin plate;
the ejection method of the large-caliber horn mesh ejection mechanism comprises the following steps:
step 1, primary ejection: the elastic plate moves upwards under the action of the elastic body, the elastic plate drives the first ejector pin plate and the second ejector pin plate to move upwards through the first mold locking device and the second mold locking device, the elastic plate stops moving after the upward movement completes a first stroke, and the first mold locking device is unlocked; the forming block main body fixed on the fixing plate is separated from the horn net;
Step 2, secondary ejection: the second ejector plate moves upwards under the action of the driving device, the second ejector plate drives the first ejector plate to move upwards together through the second mold locking device, after the first ejector plate moves upwards to complete a second stroke, the spring plate is separated from the horn mesh, and the second mold locking device is unlocked;
Step 3, three ejection: the second ejector plate continues to move upwards under the action of the driving device, and after the second ejector plate moves upwards to complete a third stroke, the ejector block is separated from the horn mesh.
2. The large caliber speaker mesh ejection mechanism of claim 1, wherein:
The ejection mechanism further comprises a large ejector pin which passes through the forming block and is contacted with the position without meshes on the horn net;
the large thimble is fixed on the second thimble plate.
3. An ejection method applied to the large-caliber horn mesh ejection mechanism as claimed in claim 1, the ejection method comprising the steps of:
step 1, primary ejection: the elastic plate moves upwards under the action of the elastic body, the elastic plate drives the first ejector pin plate and the second ejector pin plate to move upwards through the first mold locking device and the second mold locking device, the elastic plate stops moving after the upward movement completes a first stroke, and the first mold locking device is unlocked; the forming block main body fixed on the fixing plate is separated from the horn net;
Step 2, secondary ejection: the second ejector plate moves upwards under the action of the driving device, the second ejector plate drives the first ejector plate to move upwards together through the second mold locking device, after the first ejector plate moves upwards to complete a second stroke, the spring plate is separated from the horn mesh, and the second mold locking device is unlocked;
Step 3, three ejection: the second ejector plate continues to move upwards under the action of the driving device, and after the second ejector plate moves upwards to complete a third stroke, the ejector block is separated from the horn mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110177086.5A CN112829233B (en) | 2021-02-07 | 2021-02-07 | Large-caliber horn mesh ejection mechanism and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110177086.5A CN112829233B (en) | 2021-02-07 | 2021-02-07 | Large-caliber horn mesh ejection mechanism and method |
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| CN112829233A CN112829233A (en) | 2021-05-25 |
| CN112829233B true CN112829233B (en) | 2024-07-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114131841B (en) * | 2021-11-04 | 2023-12-01 | 广东东亚电器有限公司 | Injection mold for automobile thin-wall side coaming |
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| CN214448219U (en) * | 2021-02-07 | 2021-10-22 | 广东东亚电器有限公司 | Large-diameter speaker mesh ejection mechanism |
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| JP2001096588A (en) * | 1999-10-04 | 2001-04-10 | Sato Tekkosho:Kk | Mold clamping device for injection molding |
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| US8393884B2 (en) * | 2010-06-22 | 2013-03-12 | Pascal Engineering Corporation | Ejector device of injection molding machine |
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| CN208576151U (en) * | 2018-05-08 | 2019-03-05 | 新立科技股份有限公司 | Anti-sticking chamber combination ejection molding high-precision mold |
| CN109551729A (en) * | 2018-10-23 | 2019-04-02 | 宁波南方塑料模具有限公司 | A kind of secondary ejecting mechanism of automobile door panel injection mold |
| CN209224504U (en) * | 2018-11-23 | 2019-08-09 | 天津银宝山新科技有限公司 | A kind of ejection assembly for realizing ejecting function three times |
| CN211279595U (en) * | 2019-10-17 | 2020-08-18 | 浙江祥安模塑有限公司 | Car door plant injection mold horn structure secondary ejection mechanism |
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| CN104890198A (en) * | 2015-04-29 | 2015-09-09 | 耿晓冬 | Three-time auxiliary ejection mechanism and mould thereof |
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| CN112829233A (en) | 2021-05-25 |
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