CN221022181U - Simple and easy secondary ejection mechanism that uses on mould - Google Patents
Simple and easy secondary ejection mechanism that uses on mould Download PDFInfo
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- CN221022181U CN221022181U CN202322627608.4U CN202322627608U CN221022181U CN 221022181 U CN221022181 U CN 221022181U CN 202322627608 U CN202322627608 U CN 202322627608U CN 221022181 U CN221022181 U CN 221022181U
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- ejector pin
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- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a simple secondary ejection mechanism used on a die, which comprises a pushing device, a runner ejector pin used for ejecting a runner, an ejector plate arranged on the pushing device, and an ejector pin used for ejecting a product, wherein the pushing device comprises a pushing piece, a secondary ejector plate, a spring and the runner ejector pin, the runner ejector pin passes through the secondary ejector plate and the ejector plate, the ejector plate comprises an ejector pin bottom plate and an ejector pin panel, and the ejector pin panel is provided with corresponding through holes for the ejector pin to pass through. The whole process is that the pushing piece moves upwards to drive the secondary ejector plate, so that the runner ejector pin is driven to eject the runner first, and after the runner is completely ejected, the upper surface of the secondary ejector plate is contacted with a groove below the ejector pin bottom plate, so that the ejector pin is driven to move, and finally the product is ejected from the die. The cost is greatly reduced, and the deformation of the product caused by the pulling force of the runner nozzle to the product during the ejection of the product is solved.
Description
Technical Field
The utility model relates to the technical field of dies, in particular to a simple secondary ejection mechanism used on a die.
Background
In the mold manufacturing technology, in order to facilitate the product to be separated from the mold, a ejection technology is generally used, but some products cannot be ejected directly due to the problems of self materials (such as softer plastic materials or sheet products) and the like.
In this case, the product is subjected to a pulling force from the nozzle at ejection, causing the whole product to deform or burst through the sheet. To solve this problem, a secondary ejection is required, which has the following ways: 1. the ejector plate repeatedly retreats and advances, and then the product is ejected forward. 2. The provision of a dedicated secondary ejection structure, i.e., the continued forward ejection of the second ejector pin system, is a release of the product from the mold core or ejector pins (see fig. 10). 3. The special secondary ejection structure is arranged, and the secondary ejection structure is driven to move by utilizing the movement of the primary ejection, so that the secondary ejection is realized. The first technical scheme is common and common, and has the defects of high energy consumption and electric energy waste for repeatedly pushing the ejector plate. The second technical scheme has higher cost, needs to separately design a secondary ejection structure, and can lead to higher complexity of the whole die. The third technical scheme belongs to the traditional secondary ejection technical scheme, and has lower realization cost, but the design of the prior art is more complex (as the prior art document: CN 206718387U), and the structure of designing the top plate around is adopted. This results in a large increase in production cost and waste of resources if the molds of the above several schemes are used to manufacture such products.
Therefore, a new technical solution is needed to improve the problem, so that the yield of the product during demolding is ensured, the energy consumption is reduced, and the structure is prevented from being too complex so as to achieve the purpose of reducing the production cost.
Disclosure of utility model
The utility model aims to improve the defects, and provides a simple secondary ejection mechanism used on a die, through the length difference between an ejector pin and a runner ejector pin and the travel cooperation of a groove and a pushing device, the runner is ejected first, the state that a product is tightly attached to the die is destroyed while the horizontal tensile force of a water gap is reduced, and air enters a gap between the product and the die, so that the ejection pressure of the product during demolding is reduced, and the function of further ensuring the yield of the product is realized.
The object of the utility model is achieved by:
The utility model provides a simple and easy secondary ejection mechanism that uses on mould, includes that the runner thimble is used for ejecting the runner, the thimble is used for ejecting product and thimble bottom plate, thimble panel, and thrust unit sets up in the recess, and it is ejecting with the runner to promote the runner thimble by thrust unit, and the recess sets up between lower die carrier and thimble bottom plate, and its effect is held thrust unit and is in wherein the up-and-down motion, thrust unit includes secondary top board and secondary top lower plate, and wherein the effect of secondary top board is fixed runner thimble, and the secondary top lower plate is used for promoting the runner thimble, secondary top board still is provided with the spring, and the spring is used for resetting thrust unit after the drawing of patterns is accomplished to the product. The whole process is that the pushing piece moves upwards to drive the secondary ejector plate, so that the runner ejector pin is driven to eject the runner first, and after the runner is completely ejected, the upper surface of the secondary ejector plate is contacted with a groove below the ejector pin bottom plate, so that the ejector pin is driven to move, and finally the product is ejected from the die. The design adopts the length difference between the ejector pin and the runner ejector pin and the travel cooperation between the groove and the pushing device, so that the partial structure is changed on the basis of ensuring the original structure, and the aim of reducing the cost is fulfilled.
In the above description, as a preferable scheme, the runner thimble is longer than the thimble, and the groove is matched with the travel of the pushing device, so that the travel distance of the runner thimble is shorter than the travel distance of the thimble in the same time, and the runner is separated from the product first.
In the above description, as a preferable scheme, the groove is formed by a thimble bottom plate and a part of the lower die carrier, and the shape of the groove is consistent with that of the secondary top plate.
In the above description, as a preferable scheme, the secondary top plate is further provided with a spring for resetting the pushing device after the product is demolded.
In the above description, as an preferable scheme, the secondary top plate and the ejector plate are provided with corresponding through holes opposite to the pins for positioning the movement track of the pushing device.
In the above description, as a preferable scheme, the length difference between the runner ejector pin and the ejector pin is identical to the length difference of the cavity control cavity of the groove, so as to control the movement stroke of the pushing device.
In another technical scheme, the groove is arranged below the thimble bottom plate, and the shape of the groove is consistent with that of the secondary top plate. In order to be suitable for different products, the technical scheme can be adopted under the condition that the thimble plate can not be provided with the grooves, so that similar functions and effects are realized.
According to the third technical scheme, the groove is formed above the lower die frame, and the shape of the groove is consistent with that of the secondary top plate. In order to be suitable for different products, the technical scheme can be adopted under the condition that the thimble plate can not be provided with the grooves, so that similar functions and effects are realized.
The beneficial effects of the utility model are as follows: the length of the runner thimble is longer than that of the thimble, the groove is matched with the control stroke of the pushing device, the stroke distance of the runner thimble is shorter than that of the thimble in the same time, and the part of the structure is changed on the basis of ensuring the original structure, so that the runner is separated from the product at first. Conventional mold ejection is usually a four-plate mold (refer to fig. 10), and the product achieves the aim of saving cost by reducing the four-plate mold into a movable pushing device for one time
Drawings
FIG. 1 is a cross-sectional view of example 1
FIG. 2 is a cross-sectional view of the top plate ascending process of example 1
FIG. 3 is a cross-sectional view of the pin of example 1 during movement
FIG. 4 is a schematic view showing a specific structure of a mold according to example 1
FIG. 5 is a schematic view of the internal structure of embodiment 1
FIG. 6 is a top view of the grooves of example 1
FIG. 7 is a bottom view of the groove of embodiment 1
FIG. 8 is a cross-sectional view of example 2
FIG. 9 is a sectional view of example 3
FIG. 10 is a comparative view of a conventional four-plate die
In the drawing, a runner 1, a mold core 2, a thimble 3, a runner thimble 4, a secondary top plate 5, a secondary top and bottom plate 6, a pin 7, a spring 8, a thimble bottom plate 9, a thimble panel 10, a mold frame 11, an upper mold frame 111, a lower mold frame 112, a groove 12 and a pushing device 13 are arranged
Specific examples:
The object of the utility model is achieved by:
The utility model relates to a simple secondary ejection mechanism used on a die, which is described in further detail for the sake of understanding with reference to the drawings and the specific embodiments, but is not limited to the utility model.
Embodiment 1 (refer to fig. 1 and 2) is provided with three runner ejector pins 4 above the secondary ejector plate 6, the bottom ends of the runner ejector pins 4 are flush and close to the upper surface of the secondary ejector plate 6, the runner ejector pins 4 and the secondary ejector plate 6 are arranged in the die frame 11 together, when the secondary ejector plate 6 is pushed to move upwards by the lower push rod, the secondary ejector plate 5 is pushed to move upwards together, the secondary ejector plate 5 is provided with a through hole at a corresponding position, (refer to fig. 3) so that the runner ejector pins 4, the pins 7 and the springs 8 pass through corresponding holes, the secondary ejector plate 5 pushes the ejector pin bottom plate 9 to move upwards together with the ejector pin panel 10, the secondary ejector plate 5 is in contact with the ejector pin bottom plate 9 after the runner 1 is pushed out by the runner ejector pins 4, at the moment, the product is in a state which is not separated in the die core 2, so that the product is soft and thin, the product cannot be ejected out of the die core 1 by the prior art or the ejector plate is dispersed by using a reinforcing rib, therefore the runner 1 needs to be ejected, the product can not be influenced by the runner ejector pins 1, the ejector plate can pass through the corresponding holes 3, the ejector plate can be controlled to move upwards, and the top plate 9 is very easily and the same time as the bottom plate is provided with the corresponding through hole 3, the top plate is in the top plate is very low-shaped, the top plate is very low in cost, and the product is easy to be pushed by the top plate is in the top plate, and the top plate is very close to the top plate 2, and the top plate is easy to move, and has the top plate is very low in cost and the top plate is easy and has good quality.
In the specific structure of the mold of embodiment 1 (refer to fig. 4), the mold frame 11 includes an upper mold frame 111 and a lower mold frame 112, the secondary top-down plate 6 is disposed above the lower mold frame 112, and the runner ejector pins 4 and the ejector pins 3 can move up and down in the mold frame 11.
(Refer to fig. 5) the runner ejector pin 4 passes through a corresponding through hole on the secondary ejector plate 5 to be in contact with the secondary ejector plate 6, and can pass through the ejector pin bottom plate 9 and the ejector pin panel 10 to eject the runner 1. The thimble panel 10 is provided with corresponding through holes for the passage thimble 4 to pass through and other through holes for the thimble 3 and the pin 7 to pass through.
(Refer to fig. 6 and 7) in embodiment 1, the groove 12 is provided on the upper surface of the base plate, and the entire pushing mechanism 13 is provided in the groove 12, and the shape of the groove 12 corresponds to the shape of the entire pushing mechanism 13 for better operation.
The basic structure of embodiment 2 (refer to fig. 8) is the same as that of embodiment 1, but a design is adopted in which the recess 12 is provided in the lower mold frame 112, which is more cost-effective. The whole stroke of the pushing device 13 is completely performed in the lower die frame 112, the thickness of the lower die frame 112 is thickened, and the inner space of the die frame 11 is reduced. The technology further reduces the design cost of the die, and the loss between machining of 2 parts does not need to be calculated. Thus, similar functions are realized without modifying the structure on a large scale.
In the technical scheme of embodiment 3 (refer to fig. 8), the groove 12 is disposed in the ejector pin bottom plate 9, and the initial state of the pushing device 13 can be in the gap between the ejector pin bottom plate 9 and the lower die frame 112, so that the speed of demolding is greatly increased by reducing the space of the lower die frame without increasing the amount of the groove of the ejector pin bottom plate 9, and the technical scheme is suitable for a scene in which the speed of demolding needs to be increased.
The foregoing is a further detailed description of the utility model in connection with specific preferred embodiments, and is not intended to limit the practice of the utility model to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the utility model, and the scope of the utility model is to be considered as the scope of the utility model.
Claims (7)
1. A simple secondary ejection mechanism used on a die comprises a runner ejector pin (4) used for ejecting a runner (1), an ejector pin (3) used for ejecting a product, an ejector pin bottom plate (9) and an ejector pin panel (10), and is characterized in that a pushing device (13) is arranged in a groove (12), the runner ejector pin (4) is pushed by the pushing device (13) to eject the runner (1), the groove (12) is arranged between a lower die frame (112) and the ejector pin bottom plate (9) and is used for accommodating the pushing device (13) to move up and down in the groove, the pushing device (13) comprises a secondary ejector plate (5) and a secondary ejector bottom plate (6), the secondary ejector plate (5) is used for fixing the runner ejector pin (4), the secondary ejector plate (6) is used for pushing the runner ejector pin (4), and a spring (8) is further arranged on the secondary ejector plate (5) and is used for resetting the pushing device (13) after the product is ejected.
2. A simple secondary ejection mechanism for use on a mold as in claim 1, wherein: the cavity thickness of the groove (12) is larger than the sum of the thicknesses of the secondary top plate (5) and the secondary top lower plate (6).
3. A simple secondary ejection mechanism for use on a mold as in claim 2, wherein: the groove (12) is arranged below the thimble bottom plate (9), and the shape of the groove (12) is consistent with that of the secondary top plate (5) and the secondary top bottom plate (6).
4. A simple secondary ejection mechanism for use on a mold as in claim 2, wherein: the groove (12) is arranged above the lower die frame (112), and the shape of the groove (12) is consistent with that of the secondary top plate (5) and the secondary top and bottom plate (6).
5. A simple secondary ejection mechanism for use on a mold as in claim 2, wherein: the groove (12) is formed by a lower die carrier (112) and a part of the thimble bottom plate (9), and the shape of the groove (12) is consistent with that of the secondary top plate (5) and the secondary top bottom plate (6).
6. A simple secondary ejection mechanism for use on a mold as in any one of claims 3-5, wherein: the length difference of the runner thimble (4) and the thimble (3) is consistent with the length difference of the cavity control cavity of the groove (12), so that the movement stroke of the pushing device (13) is controlled.
7. A simple secondary ejection mechanism for use on a mold as in claim 6, wherein: the secondary top plate (5), the thimble bottom plate (9) and the thimble panel (10) are provided with corresponding through holes which are opposite to the pins (7) and are used for positioning the movement track of the pushing device (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627608.4U CN221022181U (en) | 2023-09-27 | 2023-09-27 | Simple and easy secondary ejection mechanism that uses on mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627608.4U CN221022181U (en) | 2023-09-27 | 2023-09-27 | Simple and easy secondary ejection mechanism that uses on mould |
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| CN221022181U true CN221022181U (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322627608.4U Active CN221022181U (en) | 2023-09-27 | 2023-09-27 | Simple and easy secondary ejection mechanism that uses on mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118417523A (en) * | 2024-07-01 | 2024-08-02 | 宁波市圣威模具制造有限公司 | A die-casting mold for motor housing of new energy vehicle |
-
2023
- 2023-09-27 CN CN202322627608.4U patent/CN221022181U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118417523A (en) * | 2024-07-01 | 2024-08-02 | 宁波市圣威模具制造有限公司 | A die-casting mold for motor housing of new energy vehicle |
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