CN216708204U - Replaceable mandrel structure in injection mold - Google Patents
Replaceable mandrel structure in injection mold Download PDFInfo
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- CN216708204U CN216708204U CN202220149818.XU CN202220149818U CN216708204U CN 216708204 U CN216708204 U CN 216708204U CN 202220149818 U CN202220149818 U CN 202220149818U CN 216708204 U CN216708204 U CN 216708204U
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Abstract
The utility model relates to a replaceable mandrel structure in an injection mold, comprising: the gear box comprises a gear box mounting plate, a core shaft fixing plate, a transmission shaft, a gear, a core shaft, a bearing seat and a transmission sleeve, wherein the core shaft fixing plate is fixed above the gear box mounting plate; the gear and the transmission shaft are rotatably arranged in the first through hole, the transmission shaft penetrates through the gear and is fixedly connected with the gear, and the upper end of the transmission shaft extends into the second through hole; the core shaft is rotatably arranged in the second through hole, the bearing seat is fixed on the core shaft fixing plate, the core shaft is matched in the bearing seat, the transmission sleeve is matched in the second through hole, the transmission sleeve is axially fixed, and the upper end of the transmission shaft and the lower end of the core shaft are matched in the transmission sleeve. After adopting such scheme, can conveniently change the type dabber, labour saving and time saving.
Description
Technical Field
The utility model relates to a replaceable mandrel structure in an injection mold.
Background
The core shaft, which determines the internal shape of the injection-molded product, and the gear box for driving the core shaft to rotate are important components in the injection mold. The core shaft is driven by the gear box to rotate, one part of the core shaft is arranged in the gear box, the gear box is composed of a plurality of gears, a driving device and a gear box fixing plate, the gears are rotatably arranged on the gear box fixing plate and are meshed with each other, the driving device drives one of the gears to rotate, so that the gears meshed with the gears are sequentially driven to rotate, and the core shaft is fixed on one gear and rotates along with the rotation of the gear. The problem that this kind of structure exists lies in, when producing different products with the injection mould, needs to change different type dabber, when changing, needs to disassemble whole gear box and comes, then changes corresponding type dabber, then makes up the gear box again, and the whole change in-process involves more part, and the change process is loaded down with trivial details, and work load is great.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a replaceable core shaft structure in an injection mold, which can conveniently replace a core shaft and is time-saving and labor-saving.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
an exchangeable mandrel structure in an injection mold, comprising: the gear box comprises a gear box mounting plate, a core shaft fixing plate, a transmission shaft, a gear, a core shaft, a bearing seat and a transmission sleeve, wherein the core shaft fixing plate is fixed above the gear box mounting plate, a first through hole is formed in the gear box mounting plate, a second through hole is formed in the core shaft fixing plate, and the first through hole is communicated with the second through hole; the gear and the transmission shaft are rotatably arranged in the first through hole, the transmission shaft penetrates through the gear and is fixedly connected with the gear, and the upper end of the transmission shaft extends into the second through hole; the core shaft is rotatably installed in the second through hole, the bearing seat is fixed on the core shaft fixing plate, the core shaft is matched in the bearing seat, the transmission sleeve is matched in the second through hole and is axially fixed, and the upper end of the transmission shaft and the lower end of the core shaft are matched in the transmission sleeve.
Preferably, the following components: the bearing further comprises a first bearing and a second bearing, a first groove and a second groove are arranged in the first through hole, the first groove is located below the second groove, and the first groove is communicated with the second groove; a third groove is formed in the bottom of the second through hole, the third groove is communicated with the second groove, and a fourth groove is formed in the top of the second through hole; the transmission shaft is provided with a gear mounting part which is arranged in a protruding manner towards the radial direction of the transmission shaft, the gear sleeve is arranged on the gear mounting part, and the gear is positioned in the second groove; the first bearing and the second bearing are sleeved on the transmission shaft, the first bearing is located below the gear, the second bearing is located above the gear, the first bearing is located in the first groove, and the second bearing is located in the third groove; the mould core shaft is provided with an annular bulge, the annular bulge is located in the fourth groove, the annular bulge is located below the bearing seat, and the transmission sleeve is located between the second bearing and the annular bulge.
Preferably: the cross section of the top of the transmission shaft and the cross section of the bottom of the core shaft are both polygonal, and the internal shape of the transmission sleeve corresponds to the shapes of the top of the transmission shaft and the bottom of the core shaft.
The utility model has the beneficial effects that: when the transmission shaft is used, other transmission gears on the gear box mounting plate are meshed with the gears on the transmission shaft, so that the transmission shaft is driven to rotate, the transmission shaft rotates to drive the transmission sleeve to rotate, the transmission sleeve rotates to drive the molding mandrel to rotate, when the molding mandrel needs to be replaced, only the bearing seat needs to be disassembled, the molding mandrel is extracted, then the new molding mandrel is inserted into the second through hole, the new molding mandrel is inserted into the transmission sleeve, the bearing seat is fixed on the molding mandrel fixing plate again, the molding mandrel is replaced conveniently, fewer parts are involved in the whole replacement process, the replacement step is simple, the molding mandrel can be replaced conveniently, and time and labor are saved.
Drawings
The utility model is further described with reference to the following figures and detailed description:
fig. 1 is a cross-sectional view of an embodiment of a replaceable core pin structure in an injection mold according to the present invention.
Wherein:
1. a gearbox mounting plate;
2. a core shaft fixing plate;
3. a drive shaft; 301. a gear mounting portion;
4. a gear;
5. a core shaft; 501. an annular projection;
6. a bearing seat;
7. a transmission sleeve;
8. a first bearing;
9. a second bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the orientations and positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "bottom", "inner", "outer", and the like are based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in figure 1 of the drawings, in which,
an exchangeable mandrel structure in an injection mold, comprising: the transmission device comprises a gear box mounting plate 1, a core shaft fixing plate 2, a transmission shaft 3, a gear 4, a core shaft 5, a bearing seat 6 and a transmission sleeve 7, wherein the core shaft fixing plate 2 is fixed above the gear box mounting plate 1, a first through hole is formed in the gear box mounting plate 1, a second through hole is formed in the core shaft fixing plate 2, and the first through hole is communicated with the second through hole; the gear 4 and the transmission shaft 3 are rotatably arranged in the first through hole, the transmission shaft 3 penetrates through the gear 4 and is fixedly connected with the gear 4, and the upper end of the transmission shaft 3 extends into the second through hole; the core shaft 5 is rotatably installed in the second through hole, the bearing seat 6 is fixed on the core shaft fixing plate 2, the core shaft 5 is matched in the bearing seat 6, the lower end of the core shaft 5 extends into the second through hole, the transmission sleeve 7 is matched in the second through hole, the transmission sleeve 7 is axially fixed, and the upper end of the transmission shaft 3 and the lower end of the core shaft 5 are matched in the transmission sleeve 7.
Therefore, when the gear box is in actual use, other transmission gears on the gear box mounting plate 1 are meshed with the gear 4 on the transmission shaft 3, so that the transmission shaft 3 is driven to rotate, the transmission shaft 3 is driven to rotate by the transmission sleeve 7, the transmission sleeve 7 is driven to rotate by the transmission sleeve 5, when the core shaft 5 needs to be replaced, only the bearing seat 6 needs to be disassembled, then the core shaft 5 is pulled out, then the new core shaft 5 is inserted into the second through hole, the new core shaft 5 is inserted into the transmission sleeve 7, then the bearing seat 6 is fixed on the core shaft fixing plate 2 again, the core shaft 5 is replaced, the number of parts involved in the whole replacement process is small, the replacement step is simple, and therefore the core shaft 5 can be replaced conveniently, time and labor are saved.
In addition, the bearing device also comprises a first bearing 8 and a second bearing 9, a first groove and a second groove are arranged in the first through hole, the first groove is positioned below the second groove, and the first groove is communicated with the second groove; a third groove is formed in the bottom of the second through hole, the third groove is communicated with the second groove, and a fourth groove is formed in the top of the second through hole; a gear mounting part 301 is arranged on the transmission shaft 3, the gear mounting part 301 protrudes towards the radial direction of the transmission shaft 3, a gear 4 is sleeved on the gear mounting part 301, and the gear 4 is positioned in the second groove; the first bearing 8 and the second bearing 9 are sleeved on the transmission shaft 3, the first bearing 8 is positioned below the gear 4, the second bearing 9 is positioned above the gear 4, the first bearing 8 is positioned in the first groove, and the second bearing 9 is positioned in the third groove; the core shaft 5 is provided with an annular protrusion 501, the annular protrusion 501 is located in the fourth groove, the annular protrusion 501 is located below the bearing seat 6, and the transmission sleeve 7 is located between the second bearing 9 and the annular protrusion 501.
In this way, since the gear mounting portion 301 is protruded in the radial direction of the transmission shaft 3, the diameter of the gear mounting portion 301 is larger than the diameters of the upper and lower sides, and the first bearing 8 and the second bearing 9 are respectively mounted on the upper and lower sides of the gear mounting portion 301, the axial direction of the mandrel 5 is limited, and the mandrel 5 can rotate more freely by the first bearing 8 and the second bearing 9; meanwhile, the annular projection 501 is located below the bearing seat 6, thus limiting the axial sliding of the mandrel 5, while freely rotating under the action of the bearing in the bearing seat 6; furthermore, the driving sleeve 7 is located between the second bearing 9 and the annular projection 501, thereby limiting the axial sliding of the driving sleeve 7, so that the upper end of the driving shaft 3 and the lower end of the mandrel 5 can always fit inside the driving sleeve 7.
In addition, the cross section of the top of the transmission shaft 3 and the cross section of the bottom of the core shaft 5 are both polygonal, and the internal shape of the transmission sleeve 7 corresponds to the shapes of the top of the transmission shaft 3 and the bottom of the core shaft 5.
Therefore, the rotation of the transmission shaft 3 drives the transmission sleeve 7 to rotate, the rotation of the transmission sleeve 7 drives the core shaft 5 to rotate, and the transmission sleeve 7 plays a transmission role.
In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the utility model, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. An exchangeable mandrel structure in an injection mold, comprising: the gear box comprises a gear box mounting plate, a core shaft fixing plate, a transmission shaft, a gear, a core shaft, a bearing seat and a transmission sleeve, wherein the core shaft fixing plate is fixed above the gear box mounting plate, a first through hole is formed in the gear box mounting plate, a second through hole is formed in the core shaft fixing plate, and the first through hole is communicated with the second through hole; the gear and the transmission shaft are rotatably arranged in the first through hole, the transmission shaft penetrates through the gear and is fixedly connected with the gear, and the upper end of the transmission shaft extends into the second through hole; the core shaft is rotatably installed in the second through hole, the bearing seat is fixed on the core shaft fixing plate, the core shaft is matched in the bearing seat, the transmission sleeve is matched in the second through hole and is axially fixed, and the upper end of the transmission shaft and the lower end of the core shaft are matched in the transmission sleeve.
2. The interchangeable core structure in an injection mold as in claim 1, wherein: the bearing assembly comprises a first through hole, a second through hole and a bearing, wherein the first through hole is internally provided with a first groove and a second groove; a third groove is formed in the bottom of the second through hole, the third groove is communicated with the second groove, and a fourth groove is formed in the top of the second through hole; the transmission shaft is provided with a gear mounting part which is arranged in a protruding manner towards the radial direction of the transmission shaft, the gear sleeve is arranged on the gear mounting part, and the gear is positioned in the second groove; the first bearing and the second bearing are sleeved on the transmission shaft, the first bearing is located below the gear, the second bearing is located above the gear, the first bearing is located in the first groove, and the second bearing is located in the third groove; the mould core shaft is provided with an annular bulge, the annular bulge is located in the fourth groove, the annular bulge is located below the bearing seat, and the transmission sleeve is located between the second bearing and the annular bulge.
3. The interchangeable core structure in an injection mold as in claim 2, wherein: the cross section of the top of the transmission shaft and the cross section of the bottom of the core shaft are both polygonal, and the internal shape of the transmission sleeve corresponds to the shapes of the top of the transmission shaft and the bottom of the core shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220149818.XU CN216708204U (en) | 2022-01-20 | 2022-01-20 | Replaceable mandrel structure in injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220149818.XU CN216708204U (en) | 2022-01-20 | 2022-01-20 | Replaceable mandrel structure in injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216708204U true CN216708204U (en) | 2022-06-10 |
Family
ID=81890630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220149818.XU Active CN216708204U (en) | 2022-01-20 | 2022-01-20 | Replaceable mandrel structure in injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216708204U (en) |
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2022
- 2022-01-20 CN CN202220149818.XU patent/CN216708204U/en active Active
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