CN216267307U - Electric tool shell anti-contraction pressurization injection mold - Google Patents
Electric tool shell anti-contraction pressurization injection mold Download PDFInfo
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- CN216267307U CN216267307U CN202122506992.3U CN202122506992U CN216267307U CN 216267307 U CN216267307 U CN 216267307U CN 202122506992 U CN202122506992 U CN 202122506992U CN 216267307 U CN216267307 U CN 216267307U
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Abstract
The utility model discloses an anti-shrinkage pressurizing injection mold for an electric tool shell, which comprises a bottom plate, a fixed mold plate and a movable mold plate, wherein the top of the bottom plate is fixedly provided with symmetrically arranged base plates and a bottom needle plate positioned between the base plates; a pressurizing cavity is formed in the movable template, a hydraulic rod is installed in the pressurizing cavity, and an anti-contraction plate is fixedly installed at the bottom of the hydraulic rod. The injection molding process can apply pressure to the shell, the reserved allowance is extruded and then discharged from the discharge channel, the subsequent shrinkage deformation of the shell is prevented, and the yield is improved.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an anti-shrinkage pressurizing injection mold for an electric tool shell.
Background
The electric tool is a hand-held or movable mechanical tool which takes a motor or an electromagnet as power and drives a working head to operate through a transmission mechanism, and the working head of the electric tool mostly adopts a drill bit. The electric tool has the characteristics of convenience in carrying, simplicity in operation, various functions and the like, can greatly reduce the labor intensity, improves the working efficiency, realizes manual operation mechanization, and is widely used. The thermoplastic engineering plastic is applied to the electric tool, double insulation of the electric tool is realized, and the use safety of the electric tool is guaranteed. To reduce the weight of the power tool, many components are manufactured by injection molding machines.
Application number CN202022478671.2 discloses an injection mold for processing of electric tool drill bit shell belongs to the injection mold field, from last to including upper die base, last mould, lower mould, a pair of fixed plate and die holder down in proper order, the die holder both ends are located respectively to a pair of fixed plate, the die holder top is located to the backup pad, be equipped with the runner on the upper die base, runner department is equipped with the runner cover, the lower mould includes first lower mould and second lower mould, be equipped with mould benevolence on the mould, be equipped with four groups on the mould benevolence and go up the shaping chamber, be equipped with down mould benevolence on the second lower mould, be equipped with four groups down the shaping chamber on the mould benevolence down, first lower mould is worn to locate in the shaping chamber down, it combines the shaping chamber with the lower shaping chamber to go up the shaping chamber, the runner passes through the runner and links to each other with the die cavity, the runner is worn to locate in proper order and first lower mould. The injection mold for processing the electric tool drill bit shell adopts the double-layer lower mold, so that the product forming quality can be effectively improved.
An injection mould for processing the shell of the drill bit of the electric tool in the prior art has the following defects: when a product with a certain wall thickness is injection molded (generally, the product with the wall thickness exceeding 4 mm can be called a wall thickness product), the product with the wall thickness can shrink more due to the shrinkage problem after plastic molding, and the appearance defect of the product is caused.
Therefore, the electric tool shell anti-shrinkage pressurization injection mold is provided.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an anti-shrinkage pressurization injection mold for a housing of an electric tool, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the utility model adopts the technical scheme that:
an anti-shrinkage pressurizing injection mold for an electric tool shell comprises a bottom plate, a fixed mold plate and a movable mold plate, wherein the top of the bottom plate is fixedly provided with symmetrically arranged base plates and a bottom needle plate positioned between the base plates, the top of the bottom needle plate is provided with the fixed mold plate, the top of the fixed mold plate is fixedly provided with buffer springs distributed in a rectangular array, the top of the fixed mold plate is connected with the movable mold plate, a through hole for limiting is formed in the movable mold plate, an injection molding channel is formed in the top of the movable mold plate, and a guide pillar penetrating through the movable mold plate is fixedly arranged on the fixed mold plate;
the movable mould plate is characterized in that a pressurizing cavity is formed in the movable mould plate, a hydraulic rod is installed in the pressurizing cavity, an anti-contraction plate is fixedly installed at the bottom of the hydraulic rod, excess material cutting plates are fixedly installed on the outer walls of two sides of the anti-contraction plate, and discharging channels communicated with the pressurizing cavity are formed in two sides of the movable mould plate.
Furthermore, the end part of the excess material cutting plate is in a wedge shape, and the wedge-shaped excess material cutting plate is relatively sharp, so that redundant materials can be cut off conveniently.
Furthermore, the top of the buffer spring is abutted against the bottom of the movable template, and the buffer spring is used for buffering the movable template, so that the impact effect between the movable template and the fixed template is reduced.
Furthermore, a vibration sensor is fixedly arranged at the top of the fixed template and used for monitoring and feeding back the impact effect of the movable template and the fixed template.
Further, the lateral wall of backing plate and the lateral wall of movable mould board all are constructed the louvre, the top integrated into one piece of movable mould board has the arch, bellied lateral wall flushes with the lateral wall of movable mould board, and bellied setting is convenient for install the movable mould board on outside elevating system.
Compared with the prior art, the utility model has the following beneficial effects: through the arranged pressurization cavity, the hydraulic rod, the shrinkage-proof plate, the excess material cutting plate and the material discharging channel, a certain allowance is reserved during injection molding, then the hydraulic rod extends to drive the shrinkage-proof plate to press the shell to be molded, pressure is applied to the shell, the allowance of the excess part is extruded and then discharged from the material discharging channel, the extruded shell is further compacted, the subsequent shrinkage deformation of the shell is prevented, and the shrinkage deformation of the shell is avoided from influencing the yield; through the guide pillar and the locating hole that set up, be convenient for aim at movable mould board and fixed die plate installation.
Drawings
Fig. 1 is a schematic view of the overall structure of an anti-shrinkage pressurization injection mold for an electric tool housing according to the present invention.
Fig. 2 is a sectional view of an anti-shrinkage pressurization injection mold for a housing of an electric tool according to the present invention.
Fig. 3 is an enlarged view of a structure a in fig. 1 of an anti-shrinkage pressurization injection mold for a housing of an electric tool according to the present invention.
In the figure: 1. a base plate; 2. a base plate; 3. a bottom needle plate; 4. fixing a template; 5. a shock sensor; 6. moving the template; 7. heat dissipation holes; 8. a buffer spring; 9. a guide post; 10. a through hole; 11. injection molding a channel; 12. a protrusion; 13. a pressurizing cavity; 14. a hydraulic lever; 15. a shrink-resistant panel; 16. cutting the excess material into boards; 17. a discharge channel.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
As shown in fig. 1-3, an anti-shrinkage and pressure-increasing injection mold for an electric tool housing comprises a base plate, a fixed mold plate and a movable mold plate, wherein the top of the base plate is fixedly provided with symmetrically arranged backing plates and a bottom needle plate positioned between the backing plates, the top of the bottom needle plate is provided with the fixed mold plate, the top of the fixed mold plate is fixedly provided with buffer springs distributed in a rectangular array, the top of the fixed mold plate is connected with the movable mold plate, a through hole for limiting is formed in the movable mold plate, the top of the movable mold plate is provided with an injection molding channel, and the fixed mold plate is fixedly provided with a guide post penetrating through the movable mold plate;
the movable mould plate is characterized in that a pressurizing cavity is formed in the movable mould plate, a hydraulic rod is installed in the pressurizing cavity, an anti-contraction plate is fixedly installed at the bottom of the hydraulic rod, excess material cutting plates are fixedly installed on the outer walls of two sides of the anti-contraction plate, and discharging channels communicated with the pressurizing cavity are formed in two sides of the movable mould plate.
The end part of the excess material cutting plate is in a wedge shape, and the wedge-shaped excess material cutting plate is relatively sharp, so that redundant materials can be cut off conveniently.
The top of the buffer spring is abutted against the bottom of the movable template, and the buffer spring is used for buffering the movable template and reducing the impact effect between the movable template and the fixed template.
And the top of the fixed template is fixedly provided with a vibration sensor for monitoring and feeding back the impact effect of the movable template and the fixed template.
Wherein, the lateral wall of backing plate and the lateral wall of movable mould board all are constructed the louvre, the top integrated into one piece of movable mould board has the arch, bellied lateral wall flushes with the lateral wall of movable mould board, and bellied setting is convenient for install the movable mould board on outside elevating system.
The utility model relates to an electric tool shell anti-shrinkage pressurization injection mold, which is characterized in that when in use, a movable template is arranged on a lifting mechanism, an injection molding machine sends raw materials into a space between a fixed template and the movable template through an injection molding channel, a hydraulic rod is started after a certain time according to the material forming characteristics, extends downwards to drive an anti-shrinkage plate to press down a shell to be formed, applies pressure to the shell, discharges the surplus part of the surplus part from a discharge channel after extrusion, further compacts the shell after extrusion to prevent the subsequent shrinkage deformation of the shell, and extrudes a buffer spring downwards when the movable template is in contact with the fixed template to reduce the impact effect between the movable template and the fixed template.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The anti-shrinkage pressurizing injection mold for the electric tool shell comprises a bottom plate (1) and is characterized by further comprising a fixed mold plate (4) and a movable mold plate (6), wherein the top of the bottom plate (1) is fixedly provided with base plates (2) which are symmetrically arranged and a bottom needle plate (3) which is positioned between the base plates (2), the top of the bottom needle plate (3) is provided with the fixed mold plate (4), the top of the fixed mold plate (4) is fixedly provided with buffer springs (8) which are distributed in a rectangular array manner, the top of the fixed mold plate (4) is connected with the movable mold plate (6), a through hole (10) for limiting is formed in the movable mold plate (6), an injection molding channel (11) is formed in the top of the movable mold plate (6), and a guide pillar (9) which penetrates through the movable mold plate (6) is fixedly arranged on the fixed mold plate (4);
the utility model discloses a mould, including movable mould board (6), movable mould board (6) and movable mould board, the inner structure of movable mould board (6) has pressure boost cavity (13), install hydraulic stem (14) in pressure boost cavity (13), the bottom installation of hydraulic stem (14) is fixed with prevents shrink board (15), the both sides outer wall of preventing shrink board (15) all installs and is fixed with clout cutting plate (16), the both sides of movable mould board (6) all are constructed discharge channel (17) with pressure boost cavity (13) intercommunication.
2. The power tool housing shrink-resistant and pressure-increasing injection mold of claim 1, wherein: the ends of the excess material cutting plate (16) are designed in the shape of a wedge.
3. The power tool housing shrink-resistant and pressure-increasing injection mold of claim 1, wherein: the top of the buffer spring (8) is abutted against the bottom of the movable mould plate (6).
4. The power tool housing shrink-resistant and pressure-increasing injection mold of claim 1, wherein: and a vibration sensor (5) is fixedly arranged at the top of the fixed template (4).
5. The power tool housing shrink-resistant and pressure-increasing injection mold of claim 1, wherein: the side wall of backing plate (2) and the lateral wall of movable mould board (6) all are constructed heat dissipation hole (7), the top integrated into one piece of movable mould board (6) has arch (12), the lateral wall of arch (12) flushes with the lateral wall of movable mould board (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122506992.3U CN216267307U (en) | 2021-10-18 | 2021-10-18 | Electric tool shell anti-contraction pressurization injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122506992.3U CN216267307U (en) | 2021-10-18 | 2021-10-18 | Electric tool shell anti-contraction pressurization injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN216267307U true CN216267307U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122506992.3U Active CN216267307U (en) | 2021-10-18 | 2021-10-18 | Electric tool shell anti-contraction pressurization injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319998A (en) * | 2022-08-25 | 2022-11-11 | 兴科电子(东莞)有限公司 | Three-color injection molding device for producing injection molding keys |
-
2021
- 2021-10-18 CN CN202122506992.3U patent/CN216267307U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319998A (en) * | 2022-08-25 | 2022-11-11 | 兴科电子(东莞)有限公司 | Three-color injection molding device for producing injection molding keys |
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