CN221212597U - Injection mold and hot runner plate thereof - Google Patents
Injection mold and hot runner plate thereof Download PDFInfo
- Publication number
- CN221212597U CN221212597U CN202323116533.XU CN202323116533U CN221212597U CN 221212597 U CN221212597 U CN 221212597U CN 202323116533 U CN202323116533 U CN 202323116533U CN 221212597 U CN221212597 U CN 221212597U
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- Prior art keywords
- runner
- branch
- plate
- distributed
- hot runner
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- 238000002347 injection Methods 0.000 title claims abstract description 43
- 239000007924 injection Substances 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims description 45
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000001746 injection moulding Methods 0.000 abstract description 7
- 239000003292 glue Substances 0.000 abstract description 6
- 238000012797 qualification Methods 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection mold and a hot runner plate thereof, wherein the hot runner plate comprises a hot runner plate main body, an injection port is formed in the hot runner plate main body, a main runner, a first branch runner, a second branch runner and a third branch runner which are communicated in sequence and gradually reduced in runner aperture are formed in the hot runner plate main body, two groups of first branch runners are distributed at the front end and the rear end of the main runner, each group of first branch runners are distributed at the left side and the right side of the main runner, the left end and the right end of each group of first branch runner are communicated with a second branch runner, each group of second branch runner is communicated with at least two groups of third branch runners, the front end and the rear end of each group of third branch runner are communicated with downward injection ports, and the size and the distribution arrangement of the runners are designed so that the problem of runner balance in 20-point production can be solved well, the injection molding glue quantity of each product is basically consistent, and the qualification rate of the product is improved.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an injection mold and a hot runner plate thereof.
Background
Most of the double-color cover molds in the prior art are produced in 16 holes, in 16 holes production, the cavities are arranged in four rows and four columns, and the distribution of the runners on the hot runner plate is easy to be laid out, so that the runners are easy to balance. In order to improve the production efficiency, some double-color cover molds are improved to 20-hole production, but cavities in 20-hole production are arranged in four rows and five columns, and the runner balance is different from that in 16-hole production, so that the runner is difficult to be normally and uniformly arranged. When the distribution of the flow channels is unreasonable, the problem of flow channel balance is difficult to solve, so that the molded products are uneven, some glue is filled, some glue is lacked, and the qualification rate of the products is reduced.
Disclosure of utility model
In order to overcome the defects of the prior art, the utility model aims to provide the hot runner plate which can better solve the problem of runner balance during 20-hole production, so that the injection molding glue amount of each product is basically consistent, and the qualification rate of the product is improved.
In order to solve the problems, the technical scheme adopted by the utility model is as follows: the utility model provides a hot runner plate, includes hot runner plate main part, the entrance has been seted up on the hot runner plate main part, set up in the hot runner plate main part in proper order intercommunication and runner aperture taper's sprue, first branch runner, second branch runner and third branch runner, first branch runner in the sprue's front and back both ends distribute two sets of, every group first branch runner all in the sprue's left and right sides distributes, every group first branch runner's left and right sides all communicates has the second branch runner, every group second branch runner all communicates has at least two sets of third branch runner, both sides all distribute around the first branch runner have the third branch runner, just the quantity of the third branch runner that the first branch runner is close to one side of entrance distributes is equal to or more than the quantity of the third branch runner that the one side of keeping away from the entrance distributes, every group the left and right branch runner all communicates down the entrance.
Compared with the prior art, the utility model has the beneficial effects that: when the injection molding device works, the plastic flows sequentially through the main runner, the first branch runner, the second branch runner and the third branch runner, the number of the third branch runners distributed on the side, close to the injection port, of the first branch runner is larger, the number of the downward injection ports is larger, and the flow strokes of the downward injection ports away from the injection ports are longer, so that the injection molding pressure of the whole mold can be reduced. The main runner, the first branch runner, the second branch runner and the third branch runner in the hot runner plate are sequentially communicated and distributed in a cross manner along the front-back left-right direction, the aperture of the runners is gradually reduced, the first branch runner is distributed with two groups in the front-back direction, so that plastic can flow in the front-back two directions of the main runner, the first branch runner is symmetrically arranged on the left side and the right side of the main runner, and the second branch runner and the third branch runner on the left side and the right side of the main runner can be more reasonably distributed. The size and distribution arrangement of the runners are designed, so that the problem of balance of the runners in 20-hole production can be better solved, the injection molding glue amount of each product is basically consistent, and the qualification rate of the products is improved.
The hot runner plate, the main runner and the second branch runner are all distributed along the front-back direction, and the first branch runner and the third branch runner are all distributed along the left-right direction.
In the hot runner plate, three groups of third branch runners are distributed at the front end of one side of the main runner, and two groups of third branch runners are distributed at the rear end of the other side of the main runner; two groups of third branch flow passages are distributed at the front end of the other side of the main flow passage, and three groups of third branch flow passages are distributed at the rear end of the main flow passage.
The hot runner plate is characterized in that mounting grooves are formed in the upper end face and the lower end face of the hot runner plate main body, the mounting grooves are circumferentially distributed along the plurality of downward injection ports, and heating pipes are embedded in the mounting grooves.
The utility model also provides an injection mold, which comprises the hot runner plate.
The utility model also provides an injection mold, which comprises an upper module and a lower module, wherein the upper module comprises a supporting plate and a runner fixing plate, the hot runner plate is arranged in the supporting plate, and the supporting plate and the runner fixing plate can be matched and supported to fix the hot runner plate; the lower die set comprises a first ejector mechanism, a second ejector mechanism and an ejection mechanism, wherein the ejection mechanism is arranged on the first ejector mechanism, and a push rod of the ejection mechanism is connected with the second ejector mechanism.
In the injection mold, two groups of ejection mechanisms are distributed on two sides of the injection mold, and each group of ejection mechanisms is designed in a double-row mode.
The injection mold comprises an injection mold body and is characterized in that the injection mold body further comprises a lower template, a base plate, a bottom plate and a movable mold guide post, wherein the lower template, the base plate, the first thimble mechanism, the second thimble mechanism and the bottom plate are sequentially distributed from top to bottom, the upper end of the movable mold guide post is fixedly connected with the lower template and the base plate, the lower end of the movable mold guide post is fixedly connected with the bottom plate, and the first thimble mechanism and the second thimble mechanism are sleeved with the movable mold guide post.
In the injection mold, the positioning ring is arranged at the lower end of the bottom plate.
The utility model is described in further detail below with reference to the drawings and the detailed description.
Drawings
FIG. 1 is a schematic view of a hot runner plate according to a first embodiment of the present utility model;
FIG. 2 is a schematic diagram illustrating a flow channel layout on a hot runner plate according to a first embodiment of the present utility model;
Fig. 3 is a schematic structural diagram of an injection mold according to a second embodiment of the present utility model.
Reference numerals illustrate: 100 upper die set, 110 top plate, 120 supporting plate, 130 runner fixing plate, 140 upper die plate, 150 hot runner plate, 151 entrance, 152 main runner, 153 first branch runner, 154 second branch runner, 155 third branch runner, 156 lower injection port, 160 heating tube, 200 lower die set, 210 lower die plate, 220 backing plate, 230 first ejector mechanism, 240 second ejector mechanism, 250 ejector mechanism, 260 bottom plate, 270 movable die guide post, 280 positioning ring.
Detailed Description
Embodiments of the present utility model are described in detail below:
Example 1
Referring to fig. 1 and 2, an embodiment of the present utility model provides a hot runner plate 150, which includes a hot runner plate body, an injection port 151 is formed in the hot runner plate body, a main runner 152, a first branch runner 153, a second branch runner 154 and a third branch runner 155, which are sequentially communicated and have gradually reduced runner apertures, are formed in the hot runner plate body, mounting grooves are formed on upper and lower end surfaces of the hot runner plate body, the mounting grooves are circumferentially distributed along a plurality of downward injection ports 156, and heating pipes 160 are embedded in the mounting grooves.
Referring to fig. 2, the flow direction of the main flow channel 152 starts from the injection port 151, and is set along the front-back direction, two groups of first branch flow channels 153 are distributed at the front-back ends of the main flow channel 152, each group of first branch flow channels 153 are symmetrically distributed at the left-right sides of the main flow channel 152, and the flow direction of the first branch flow channels 153 starts from the intersection point of the first branch flow channels 153 and the main flow channel 152, and is set along the left-right direction, so that after flowing along the front-back direction of the main flow channel 152, plastics can flow into the first branch flow channels 153 along the left-right direction.
With continued reference to fig. 2, the left and right ends of each of the first branch flow passages 153 are respectively connected to second branch flow passages 154, each of the second branch flow passages 154 is respectively connected to at least two sets of third branch flow passages 155, the front and rear sides of the first branch flow passages 153 are respectively provided with third branch flow passages 155, and the number of the third branch flow passages 155 distributed on one side of the first branch flow passages 153 close to the injection port 151 is equal to or greater than the number of the third branch flow passages 155 distributed on one side of the first branch flow passages 153 far from the injection port 151, and the left and right ends of each of the third branch flow passages 155 are respectively connected to downward injection ports 156. Taking 20 holes for production as an example, 20 downward injection ports 156 are needed, the main runner 152 and the second branch runner 154 are all distributed along the front-back direction, the first branch runner 153 and the third branch runner 155 are all distributed along the left-right direction, three groups of third branch runners 155 are distributed at the front end of one side of the main runner 152, such as the left side in fig. 2, and two groups of third branch runners 155 are distributed at the rear end of the main runner 152; on the other side of the main flow channel 152, for example, on the right side in fig. 2, two sets of third branch flow channels 155 are distributed at the front end, and three sets of third branch flow channels 155 are distributed at the rear end.
In operation, the plastic flows through the main channel 152, the first branch channel 153, the second branch channel 154 and the third branch channel 155 in sequence, the number of the third branch channels 155 distributed on the side of the first branch channel 153 close to the injection port 151 is larger, the number of the downward injection ports 156 is larger, and the flow strokes of the downward injection ports 156 away from the injection port 151 are longer, so that the injection pressure of the whole mold can be reduced. The main flow channel 152, the first branch flow channel 153, the second branch flow channel 154 and the third branch flow channel 155 in the hot flow channel plate 150 are sequentially communicated and distributed in a cross manner along the front-back left-right direction, the flow channel aperture is gradually reduced, the first branch flow channel 153 is distributed with two groups in the front-back direction, so that plastic can flow in the front-back direction of the main flow channel 152, the first branch flow channel 153 is symmetrically arranged on the left and right sides of the main flow channel 152, and the second branch flow channel 154 and the third branch flow channel 155 on the left and right sides of the main flow channel 152 can be more reasonably arranged. The size and distribution arrangement of the runners are designed, so that the problem of balance of the runners in 20-hole production can be better solved, the injection molding glue amount of each product is basically consistent, and the qualification rate of the products is improved.
Example two
The utility model also provides an injection mold, which comprises an upper mold 100 and a lower mold 200, wherein the upper mold 100 comprises a top plate 110, a support plate 120, a runner fixing plate 130 and an upper mold plate 140 which are sequentially connected from top to bottom, the hot runner plate 150 is installed in the support plate 120, and the support plate 120 and the runner fixing plate 130 can be matched to support and fix the hot runner plate 150. The lower die set 200 comprises a lower die plate 210, a base plate 220, a first ejector mechanism 230, a second ejector mechanism 240 and a bottom plate 260 which are sequentially distributed from top to bottom, and further comprises an ejection mechanism 250, wherein the ejection mechanism 250 is arranged on the first ejector mechanism 230, a push rod of the ejection mechanism 250 is connected with the second ejector mechanism 240, two groups of ejection mechanisms 250 are distributed on two sides of the injection die, each group of ejection mechanisms 250 is designed in a double-row mode, and the ejection mechanisms 250 in the double-row mode can eject out simultaneously during die sinking, so that the ejection balance of the die is improved, and the stability of products is ensured. Further, the lower module 200 further includes a movable mold guide post 270, the upper end of the movable mold guide post 270 is fixedly connected with the lower mold plate 210 and the base plate 220, the lower end is fixedly connected with the base plate 260, the first ejector pin mechanism 230 and the second ejector pin mechanism 240 are sleeved with the movable mold guide post 270, and when the mold is assembled, the first ejector pin mechanism 230 and the second ejector pin mechanism 240 are sequentially sleeved with the movable mold guide post 270, so that the assembly can be facilitated, and the installation precision of the mold is improved. Specifically, the first ejector mechanism 230 and the second ejector mechanism 240 each include two ejector plates. The lower end of the bottom plate 260 is provided with a positioning ring 280 which can correspond to a central positioning hole on the injection molding machine, so that the concentricity of the connection between the mold and the machine is improved, and the sagging or the deviation of the mold is prevented.
It should be noted that, in the description of the present utility model, if an azimuth or positional relationship is referred to, for example, upper, lower, front, rear, left, right, etc., the azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be configured or operated in a specific azimuth, and should not be construed as limiting the present utility model.
In the description of the present utility model, a plurality means one or more, and a plurality means two or more, and it is understood that greater than, less than, exceeding, etc. does not include the present number, and it is understood that greater than, less than, within, etc. include the present number. If any, first or second, etc. are described for the purpose of distinguishing between technical features only and not for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (9)
1. The utility model provides a hot runner plate, its characterized in that includes hot runner plate main part, inlet (151) have been seted up in the hot runner plate main part, set gradually intercommunication and runner aperture reduces in the hot runner plate main part main flow channel (152), first branch runner (153), second branch runner (154) and third branch runner (155), main flow channel (152) with inlet (151) intercommunication, first branch runner (153) in both ends distribute around main runner (152) have two sets of, every group first branch runner (153) all in the left and right sides of main runner (152) distributes, every group first branch runner (153) both ends all communicate have second branch runner (154), every group second branch runner (154) all communicate at least two sets of third branch runner (155), the front and back both sides of first branch runner (153) all distribute have third branch runner (155), just first branch runner (153) all in the first branch runner (153) both sides of the distribution have the first branch runner (153) the number of first branch runner (155) all to be equal to the inlet (155) of first branch runner (153) all is more than the inlet (155) of first branch (155) of one side (155) is more than the inlet (155) of the same number of one side (155) is all distributed down.
2. The hot runner plate according to claim 1, wherein the main runner (152) and the second branch runner (154) are each distributed in a front-rear direction, and the first branch runner (153) and the third branch runner (155) are each distributed in a left-right direction.
3. The hot runner plate according to claim 1 or 2, characterized in that three sets of the third branch runners (155) are distributed at the front end and two sets of the third branch runners (155) are distributed at the rear end on one side of the main runner (152);
Two groups of third branch flow passages (155) are distributed at the front end of the other side of the main flow passage (152), and three groups of third branch flow passages (155) are distributed at the rear end of the main flow passage.
4. The hot runner plate according to claim 1, wherein the upper and lower end surfaces of the hot runner plate body are provided with mounting grooves, the mounting grooves are circumferentially distributed along the plurality of the downward injection ports (156), and the mounting grooves are embedded with heating pipes (160).
5. An injection mold comprising a hot runner plate (150) as claimed in any one of claims 1 to 4.
6. An injection mold, characterized by comprising an upper mold set (100) and a lower mold set (200), wherein the upper mold set (100) comprises a support plate (120) and a runner fixing plate (130), a hot runner plate (150) according to any one of claims 1-4 is installed in the support plate (120), and the support plate (120) and the runner fixing plate (130) can be matched and supported to fix the hot runner plate (150); the lower die set (200) comprises a first ejector mechanism (230), a second ejector mechanism (240) and an ejection mechanism (250), wherein the ejection mechanism (250) is installed on the first ejector mechanism (230), and a push rod of the ejection mechanism (250) is connected with the second ejector mechanism (240).
7. The injection mold of claim 6, wherein two groups of ejection mechanisms (250) are disposed on two sides of the injection mold, each group of ejection mechanisms (250) having a double-row design.
8. The injection mold of claim 6, wherein the lower mold assembly (200) further comprises a lower mold plate (210), a base plate (220), a bottom plate (260) and a movable mold guide post (270), wherein the lower mold plate (210), the base plate (220), the first ejector pin mechanism (230), the second ejector pin mechanism (240) and the bottom plate (260) are sequentially distributed from top to bottom, the upper end of the movable mold guide post (270) is fixedly connected with the lower mold plate (210) and the base plate (220), the lower end of the movable mold guide post is fixedly connected with the bottom plate (260), and the first ejector pin mechanism (230) and the second ejector pin mechanism (240) are sleeved with the movable mold guide post (270).
9. The injection mold of claim 8, wherein a retainer ring (280) is mounted to a lower end of the bottom plate (260).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323116533.XU CN221212597U (en) | 2023-11-17 | 2023-11-17 | Injection mold and hot runner plate thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323116533.XU CN221212597U (en) | 2023-11-17 | 2023-11-17 | Injection mold and hot runner plate thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221212597U true CN221212597U (en) | 2024-06-25 |
Family
ID=91570364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323116533.XU Active CN221212597U (en) | 2023-11-17 | 2023-11-17 | Injection mold and hot runner plate thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221212597U (en) |
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2023
- 2023-11-17 CN CN202323116533.XU patent/CN221212597U/en active Active
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