CN216267362U - Helical gear injection mold - Google Patents
Helical gear injection mold Download PDFInfo
- Publication number
- CN216267362U CN216267362U CN202122983592.1U CN202122983592U CN216267362U CN 216267362 U CN216267362 U CN 216267362U CN 202122983592 U CN202122983592 U CN 202122983592U CN 216267362 U CN216267362 U CN 216267362U
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- Prior art keywords
- plate
- core
- helical gear
- push
- fixed
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- 238000002347 injection Methods 0.000 title claims abstract description 14
- 239000007924 injection Substances 0.000 title claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000012778 molding material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses a helical gear injection mold which comprises a fixed mold, a movable mold, a demolding mechanism and a demolding driving mechanism, wherein the fixed mold comprises a top plate, a stripper plate and a fixed mold plate, and a fixed mold cavity is arranged in the fixed mold plate; the movable mould comprises a movable mould plate, a movable mould base plate, a movable mould core, a long core, a short core and a gear cavity, wherein the movable mould core is arranged in the movable mould plate, the short core is sleeved outside the long core and then inserted into the movable mould plate, the gear cavity is sleeved outside the long core, the demoulding mechanism comprises a top pipe sleeved on the long core, the upper end of the top pipe is inserted between the upper core and the short core, the top of the top pipe is abutted against a helical gear, the lower end of the top pipe is installed with a top pipe fixing plate, the top pipe fixing plate is fixedly connected with a push plate, a top rod is arranged below the push plate, the push plate and the top pipe fixing plate are pushed to move upwards, the helical gear is pushed to be pushed upwards pushed by the top pipe, the transmission shaft is installed at the lower end of the long core, and the transmission shaft is connected with the demoulding driving mechanism through a chain wheel matched with the chain.
Description
Technical Field
The utility model relates to an injection mold, in particular to a helical gear injection mold.
Background
The plastic helical gear is widely applied in modern industry, and compared with a metal helical gear, the plastic helical gear has the advantages of light weight, low running noise, good self-lubricating property and the like. The plastic helical gear is mainly formed by injection molding of a mold and has the characteristics of high efficiency and low cost.
However, due to the special structure of the plastic helical gear with a large helical angle (beta is 20 degrees), the problem of difficult demoulding exists in the actual production, so that the production efficiency is greatly reduced, the rejection rate is high, the production cost is increased, and the large-scale production and manufacturing are not facilitated.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a helical gear injection mold for solving the defects of the prior art, which realizes high-efficiency demolding of helical gears and improves the yield.
The technical scheme adopted by the utility model is as follows: the utility model provides a helical gear injection mold, includes cover half, movable mould, demoulding mechanism and drawing of patterns actuating mechanism, wherein:
the fixed die sequentially comprises a top plate, a stripper plate and a fixed die plate from top to bottom, a fixed die cavity is arranged in the fixed die plate, and the upper part of the fixed die cavity is fixed through a pressing plate;
the movable die comprises a movable die plate, a movable die base plate, a movable die core, a long core, a short core and a gear cavity, the movable die plate is fixedly connected with the movable die base plate, the movable die core is arranged in the movable die plate, the short core is of a sleeve structure, the short core is sleeved outside the long core and then inserted into the movable die core, the lower end of the short core is fixed with the movable die base plate, the gear cavity is sleeved outside the long core, and the outer edge of the gear cavity is limited by a limiting bolt fixed on the movable die core;
the demolding mechanism comprises a push pipe, a push pipe fixing plate, a push rod, a transmission shaft and a chain wheel, wherein the push pipe is slidably sleeved on the long core, the upper end of the push pipe is inserted between the upper core and the short core, the top of the push pipe abuts against the helical gear, the lower end of the push pipe is installed on the push pipe fixing plate, the push pipe fixing plate is fixedly connected with the push plate and is connected with a guide pillar below the movable mold base plate, the push rod is arranged below the push plate, the push plate and the push pipe fixing plate are pushed to move upwards along the guide pillar, the helical gear is pushed upwards by the push pipe, the transmission shaft is installed at the lower end of the long core, is connected with the demolding driving mechanism through a chain matched with the chain, is driven to rotate by the demolding driving mechanism, and then drives the long core to rotate, and the helical gear is separated from the gear cavity under the rotating force of the long core and the pushing force of the push pipe, so as to realize demolding.
Preferably, the demolding driving mechanism comprises a mounting seat, a motor, a second chain wheel and a chain, the mounting seat is fixedly located below the push plate, the motor is fixed on the mounting seat through a motor mounting frame, the second chain wheel is installed on a rotating shaft of the motor, a transmission shaft of the demolding mechanism is embedded in the mounting seat through a bearing, and the chain wheel on the transmission shaft is connected with the second chain wheel through the chain.
Preferably, a sprue is arranged at the center of the top plate, a sub-runner is arranged in the pressing plate, a feeding runner is arranged in the cavity of the fixed die, a material pulling rod fixed on the side edge of the sprue penetrates through the stripper plate and is positioned at the upper part of the feeding runner, the material pulling rod is separated from the feeding runner along with the downward movement of the stripper plate and the fixed die plate, the injection molding material passes through the sub-runner, and the feeding runner enters the cavity of the fixed die.
Preferably, the long core is a hollow structure, and a cold water pipe is inserted into the long core, so that the injected cooling water flows down along the side wall of the long core.
Has the advantages that: according to the helical gear injection mold disclosed by the utility model, the helical gear is stably separated from the tooth-shaped cavity through the rotation of the long mold core matched with the push pipe ejection design and the limit of the limit bolt, so that a stable rotary demolding structure is formed, the helical gear cannot be damaged during demolding, the efficiency is high, and the yield is high.
Drawings
FIG. 1 is a block diagram of a helical gear machined according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
fig. 3 is a sectional structural view of a partial movable mold and a mold-releasing mechanism in the embodiment of the utility model.
Wherein: 1-fixed die, 2-movable die, 3-demoulding mechanism, 4-demoulding driving mechanism, 5-cold water pipe, 9-bevel gear part, 11-top plate, 12-stripper plate, 13-fixed die plate, 14-fixed die cavity, 15-pressing plate, 16-pouring gate, 17-shunt channel, 18-feeding channel, 19-material pulling rod, 21-movable die plate, 22-movable die backing plate, 23-movable die core, 24-long core, 25-short core, 26-gear cavity, 27-limiting bolt, 251-flange surface, 31-top pipe, 32-top pipe fixing plate, 33-push plate, 34-top rod, 35-transmission shaft, 36-chain wheel, 41-mounting seat, 42-motor, 43-second chain wheel, 44-chain, 45-motor mounting bracket, 46-bearing, 91-upper sleeve, 92-helical tooth, 93-lower sleeve.
Detailed Description
The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
As shown in fig. 2 to 3, the injection mold for a helical gear according to the present invention is used for processing the helical gear part 9 shown in fig. 1, the helical gear part has an upper sleeve 91, a middle helical tooth 92 and a lower sleeve 93, and the injection mold structure includes a fixed mold 1, a movable mold 2, a demolding mechanism 3 and a demolding driving mechanism 4.
The fixed die comprises a top plate 11, a stripper plate 12, a fixed die plate 13, a fixed die cavity 14 and a pressing plate 15, the fixed die plate and the stripper plate are fixed with a guide post of the top plate and move up and down under the guide of the guide post, the fixed die cavity is arranged in the fixed die plate, the upper part of the fixed die plate is fixed by the pressing plate, a sprue 16 is arranged in the center of the top plate, a runner 17 is arranged in the pressing plate, a feed channel 18 is arranged in the fixed die cavity, a material pulling rod 19 fixed on the side edge of the sprue penetrates through the stripper plate and is positioned on the upper part of the feed channel, the material pulling rod is separated from the feed channel along with the downward movement of the stripper plate and the fixed die plate, injection molding materials pass through the runner, and the feed channel enters the fixed die cavity.
The movable mould comprises a movable mould plate 21, a movable mould base plate 22, a movable mould core 23, a long core 24, a short core 25 and a gear cavity 26, wherein the movable mould plate is fixedly connected with the movable mould base plate, the movable mould core is arranged in the movable mould plate, the short core is of a sleeve structure, the lower end of the short core is provided with a flange surface 251, the short core is sleeved outside the long core and then inserted into the movable mould plate, the flange surface of the short core is fixed with the movable mould base plate, the gear cavity is sleeved outside the long core, a cavity for forming helical gear helical teeth is formed between the gear cavity and the long core, the outer edge of the gear cavity is limited by a limiting bolt 27 fixed on the movable mould core, the bolt body of the limiting bolt can limit the transverse movement of the gear cavity, and the bolt head can limit the up-and-down movement of the gear cavity.
After the fixed die and the movable die are assembled, the top of the long core is inserted into the cavity of the fixed die, so that a cavity for forming the upper sleeve of the helical gear is formed between the cavity of the fixed die and the long core, a cavity for forming the helical gear helical tooth is formed between the cavity of the gear and the long core, and a cavity for forming the lower sleeve of the helical gear is formed between the short core and the long core.
The demoulding mechanism comprises a top pipe 31, a top pipe fixing plate 32, a push plate 33, a top rod 34, a transmission shaft 35 and a chain wheel 36, the top pipe is slidably sleeved on the long mold core, the upper end of the top pipe is inserted between the upper mold core and the short mold core, the top of the top pipe is abutted against the helical gear 6, the lower end of the top pipe is installed with the top pipe fixing plate, the top pipe fixing plate is fixedly connected with the push plate and is simultaneously connected with a guide pillar below a movable mold base plate, so that the top plate fixing plate and the push plate can move up and down along the guide pillar, the top rod is arranged below the push plate and pushes the push plate and the top pipe fixing plate to move up along the guide pillar, so that the top pipe pushes up the helical gear, the transmission shaft is installed at the lower end of the long mold core, the transmission shaft is connected with a demoulding driving mechanism through a chain wheel matched with a chain, the demoulding driving mechanism drives the transmission shaft to rotate so as to drive the rotation of the long mold core to rotate, and the helical gear under the action of the rotation force of the long mold core and the thrust of the helical gear, and the die is separated from the gear cavity to realize demoulding.
The drawing of patterns actuating mechanism includes mount pad 41, motor 42, second sprocket 43 and chain 44, the mount pad is fixed to be located the push pedal below, and the motor passes through motor mounting bracket 45 to be fixed on the mount pad, and the second sprocket is installed in the pivot of motor, and the transmission shaft of drawing of patterns mechanism passes through bearing 46 to inlay and adorns in the mount pad, and the epaxial sprocket of transmission passes through the chain to be connected with the second sprocket, the ejector pin passes the mount pad, and the bottom makes the ejector pin jack-up through the driving piece such as cylinder when needs jacking.
Therefore, the scope of the present invention should not be limited to the disclosure of the embodiments, but includes various alternatives and modifications without departing from the scope of the present invention, which is defined by the claims of the present patent application.
Claims (4)
1. A helical gear injection mold is characterized in that: including cover half, movable mould, demoulding mechanism and drawing of patterns actuating mechanism, wherein:
the fixed die sequentially comprises a top plate, a stripper plate and a fixed die plate from top to bottom, a fixed die cavity is arranged in the fixed die plate, and the upper part of the fixed die cavity is fixed through a pressing plate;
the movable die comprises a movable die plate, a movable die base plate, a movable die core, a long core, a short core and a gear cavity, the movable die plate is fixedly connected with the movable die base plate, the movable die core is arranged in the movable die plate, the short core is of a sleeve structure, the short core is sleeved outside the long core and then inserted into the movable die core, the lower end of the short core is fixed with the movable die base plate, the gear cavity is sleeved outside the long core, and the outer edge of the gear cavity is limited by a limiting bolt fixed on the movable die core;
the demolding mechanism comprises a push pipe, a push pipe fixing plate, a push rod, a transmission shaft and a chain wheel, wherein the push pipe is slidably sleeved on the long core, the upper end of the push pipe is inserted between the upper core and the short core, the top of the push pipe abuts against the helical gear, the lower end of the push pipe is installed on the push pipe fixing plate, the push pipe fixing plate is fixedly connected with the push plate and is connected with a guide pillar below the movable mold base plate, the push rod is arranged below the push plate, the push plate and the push pipe fixing plate are pushed to move upwards along the guide pillar, the helical gear is pushed upwards by the push pipe, the transmission shaft is installed at the lower end of the long core, is connected with the demolding driving mechanism through a chain matched with the chain, is driven to rotate by the demolding driving mechanism, and then drives the long core to rotate, and the helical gear is separated from the gear cavity under the rotating force of the long core and the pushing force of the push pipe, so as to realize demolding.
2. The helical gear injection mold according to claim 1, wherein: the demolding driving mechanism comprises a mounting seat, a motor, a second chain wheel and a chain, wherein the mounting seat is fixedly arranged below the push plate, the motor is fixed on the mounting seat through a motor mounting frame, the second chain wheel is installed on a rotating shaft of the motor, a transmission shaft of the demolding mechanism is embedded in the mounting seat through a bearing, and the chain wheel on the transmission shaft is connected with the second chain wheel through the chain.
3. The helical gear injection mold according to claim 1, wherein: the injection molding machine is characterized in that a sprue is arranged at the center of the top plate, a sub-runner is arranged in the pressing plate, a feeding channel is arranged in the cavity of the fixed die, a material pulling rod fixed to the side edge of the sprue penetrates through the stripper plate and is located on the upper portion of the feeding channel, the material pulling rod is separated from the feeding channel along with the downward movement of the stripper plate and the fixed die plate, injection molding materials pass through the sub-runner, and the feeding channel enters the cavity of the fixed die.
4. The helical gear injection mold according to claim 1, wherein: the long core is of a hollow structure, and a cold water pipe is inserted into the long core, so that the injected cooling water flows downwards along the side wall of the long core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122983592.1U CN216267362U (en) | 2021-11-29 | 2021-11-29 | Helical gear injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122983592.1U CN216267362U (en) | 2021-11-29 | 2021-11-29 | Helical gear injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216267362U true CN216267362U (en) | 2022-04-12 |
Family
ID=81040486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122983592.1U Expired - Fee Related CN216267362U (en) | 2021-11-29 | 2021-11-29 | Helical gear injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216267362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116277796A (en) * | 2023-04-04 | 2023-06-23 | 江苏惠利隆塑业集团有限公司 | Processing and forming equipment and processing method of injection molding piece |
-
2021
- 2021-11-29 CN CN202122983592.1U patent/CN216267362U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116277796A (en) * | 2023-04-04 | 2023-06-23 | 江苏惠利隆塑业集团有限公司 | Processing and forming equipment and processing method of injection molding piece |
| CN116277796B (en) * | 2023-04-04 | 2023-11-14 | 江苏惠利隆塑业集团有限公司 | Processing and forming equipment and processing method of injection molding piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220412 |