CN214726224U - Demolding structure with internal thread structure for injection molding part - Google Patents
Demolding structure with internal thread structure for injection molding part Download PDFInfo
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- CN214726224U CN214726224U CN202023323421.8U CN202023323421U CN214726224U CN 214726224 U CN214726224 U CN 214726224U CN 202023323421 U CN202023323421 U CN 202023323421U CN 214726224 U CN214726224 U CN 214726224U
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Abstract
The utility model discloses a demoulding structure for injection molding with internal thread structure, which comprises a bottom plate, a driving mechanism and a thread mould core, wherein the lower part of the bottom plate is provided with a cavity, one side of the bottom plate is provided with a mounting plate, the driving mechanism comprises a driving motor, a driving gear, a driving part, a synchronous gear, a main gear, a secondary gear and a rotating shaft, the driving motor is fixed on the mounting plate, the driving gear is arranged on an output shaft of the driving motor, the synchronous gear is rotatably arranged on the upper wall in the cavity and is connected with the driving gear in a transmission way through the driving part, the upper end surface of the bottom plate is rotatably provided with the main gear which is coaxially transmitted with the synchronous gear, the secondary gear is rotatably arranged on the bottom plate and is meshed with the main gear, the rotating shaft is fixed on the secondary gear, the upper end of the rotating shaft is provided with the thread mould core, the driving motor of the utility model is used as a power source, the rotation of the thread mould core is realized after transmission, and the control precision is high, can realize that screw thread mould benevolence is quick, accurate, high-efficient drawing of patterns, can not cause injection molding internal thread structure's damage.
Description
Technical Field
The utility model relates to an injection mold technical field especially relates to an injection molding is with demolding structure with internal thread structure.
Background
The injection molding product has the advantages of light weight, high strength, good durability, strong assembly and the like, and is widely applied to the fields of household products, medical equipment, building materials, sports equipment and the like. In the manufacturing process of injection molding products, plastic materials in a molten state are generally uniformly stirred by a screw extruder at a certain temperature, then injected into an injection mold, molded in a cavity of the injection mold, cooled and solidified to obtain a molded injection molding product, and then the injection molding product is pushed down from the injection mold by an ejector pin.
The injection molding product often needs to be processed with an internal thread structure to facilitate connection with other components. However, the internal thread is difficult to separate from the mold after injection molding, and the demolding is time-consuming and labor-consuming, the demolding efficiency is low, the demolding precision is not high, and the injection molding part can be damaged; and the demolding structure occupies a large space and is inconvenient to use and operate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an injection molding is with demolding structure with internal thread structure, by driving motor as the power supply, realize the rotation of screw thread mould benevolence after the transmission, control precision is high, can realize that screw thread mould benevolence is quick, accurate, high-efficient drawing of patterns, can not cause injection molding internal thread structure's damage.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a demoulding structure with an internal thread structure for injection molding parts comprises a bottom plate, a driving mechanism and a thread mould core, wherein a cavity is arranged at the lower part of the bottom plate, one side of the driving mechanism is provided with a mounting plate, the driving mechanism comprises a driving motor, a driving gear, a transmission piece, a synchronous gear, a main gear, a secondary gear and a rotating shaft, the driving motor is fixed on the mounting plate, the driving gear is arranged on an output shaft of the driving motor and is positioned beside the cavity, the synchronous gear is rotatably arranged on the upper wall in the cavity, which is connected with a driving gear in a transmission way through a transmission piece, a main gear which is coaxially driven with a synchronous gear is rotatably arranged on the upper end surface of the bottom plate, a plurality of pinion gears are rotatably arranged on the bottom plate and are all meshed with the main gear, the rotating shaft is fixed on the pinion gears, the upper end of the driving mechanism is provided with a plurality of threaded mold cores, and the driving mechanism synchronously drives the plurality of threaded mold cores to rotate.
As a further optimization, the transmission member is a transmission chain or a transmission gear.
As a further optimization, the threaded mold core comprises a threaded end, a middle end and a fixed end which are connected from top to bottom, a groove is formed in the upper end of the rotating shaft, and the fixed end is embedded into the groove to install the threaded mold core on the rotating shaft.
As a further optimization, the upper part of the rotating shaft is provided with a first through hole which horizontally penetrates through the body and the groove of the rotating shaft, the fixed end is provided with a second through hole which horizontally penetrates through the body of the fixed end, and the threaded mold core is fixed on the rotating shaft through a pin shaft which penetrates through the first through hole and the second through hole.
As a further optimization, the horizontal section of the groove is non-circular, and the horizontal section of the fixing end is matched with the horizontal section of the groove.
As a further optimization, the horizontal cross section of the groove is rectangular.
As a further optimization, the middle end comprises a conical frustum section and a cylindrical section which are connected from top to bottom, and the diameter of the bottom surface of the conical frustum section is equal to that of the cylindrical section; the thread end is arranged at the upper end of the cone section, and the fixed end is arranged at the lower end of the cylinder section.
As a further optimization, a limiting structure for lifting and positioning the thread end is arranged on the side wall of the middle part of the frustum cone section.
As a further optimization, the limiting structure is a limiting ring or a limiting thread.
As a further optimization, the number of the secondary gears is three to six, and the secondary gears are uniformly distributed on the peripheral side of the main gear.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the driving motor is used as a power source, the rotation of the threaded mold core is realized after transmission, the control precision is high, the rapid, accurate and efficient demolding of the threaded mold core can be realized, and the damage to the internal thread structure of the injection molding piece can be avoided; the driving motor is arranged outside the bottom plate, so that more space in the length direction of the whole set of die can not be occupied, and the use and storage of the die are facilitated;
2. through setting up the circular cone platform section, when screw core mould benevolence passed the through-hole on the die holder, the circular cone platform section can imbed the through-hole completely, has better sealed effect.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a structural diagram of the driving gear and the synchronizing gear on the bottom plate of the present invention.
Fig. 3 is a structural diagram of the threaded mold insert of the present invention installed on the rotating shaft.
Fig. 4 is a structural diagram of the rotating shaft of the present invention.
Fig. 5 is a structural diagram of the threaded mold insert of the present invention.
Fig. 6 is a schematic diagram of a structure of the mold seat of the present invention for the mold insert of the present invention.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 6, a demolding structure for injection molding with internal thread structure, comprising a bottom plate 1, a driving mechanism and a thread mold core 3, wherein a cavity 11 is arranged at the lower part of the bottom plate 1, a mounting plate 12 is arranged at one side of the bottom plate 1, the driving mechanism comprises a driving motor 21, a driving gear 22, a transmission member, a synchronizing gear 23, a main gear 24, a secondary gear 25 and a rotating shaft 26, the driving motor 21 is fixed on the mounting plate 12, the driving gear 22 is arranged on an output shaft of the driving motor 21 and is located at the side of the cavity 11, the synchronizing gear 23 is rotatably arranged on the upper wall in the cavity 11 and is in transmission connection with the driving gear 22 through the transmission member, the main gear 24 which is in coaxial transmission with the synchronizing gear 23 is rotatably arranged on the upper end surface of the bottom plate 1, a plurality of secondary gears 25 are rotatably arranged on the bottom plate 1 and are all meshed with the main gear 24, specifically, the main gear and the secondary gear are respectively rotatably arranged on a first bearing 41 and a second bearing 42, the first bearing and the second bearing can be selectively arranged on the bottom plate, the rotating shaft 26 is fixed on the pinion 25, the upper end of the rotating shaft is provided with the thread mold cores 3, and the driving mechanism synchronously drives the thread mold cores 3 to rotate.
The utility model discloses be applied to the injection molding that has internal thread structure, the injection molding is the shaping in the outside of screw thread mould benevolence on die holder 5, and the structure phase-match of its internal thread structure and screw thread mould benevolence, when needs demolding (here demolding indicates that screw thread mould benevolence withdraws from the internal thread structure of injection molding), driving motor work, it rotates to drive gear, drive gear passes through the driving medium and drives synchronous gear rotation, the master gear coaxial with synchronous gear drives pinion rotation, thereby it is rotatory to drive screw thread mould benevolence through the pivot, under the rotatory state of screw thread mould benevolence, external drive device in addition will this demolding structure to keeping away from the die holder direction and remove, can realize the drawing of patterns action. The utility model takes the driving motor as the power source, realizes the rotation of the thread mold core after transmission, has high control precision, can realize the quick, accurate and high-efficiency demoulding of the thread mold core, and can not cause the damage of the internal thread structure of the injection molding piece; and the driving motor is arranged outside the bottom plate, so that more space in the length direction of the whole set of die can not be occupied, and the die is favorably used and stored.
The driving medium is transmission chain or drive gear, and transmission chain can directly overlap the outside of locating drive gear and synchro gear, if adopt drive gear, the accessible bearing with its rotatable setting in the cavity, it meshes with drive gear and synchro gear mutually respectively, can be with drive gear and synchro gear precision fit through this mechanical structure, transmission precision is high, the synchronism is good.
The screw mold core 3 comprises a screw end 31, a middle end 32 and a fixed end 33 which are connected from top to bottom, a groove 262 is arranged at the upper end of the rotating shaft 26, and the fixed end 33 is embedded into the groove 262 to install the screw mold core 3 on the rotating shaft 26. The upper portion of the rotating shaft 26 is provided with a first through hole 261 horizontally penetrating through the body and the groove 262, the fixing end 33 is provided with a second through hole 331 horizontally penetrating through the body, and the screw mold core 3 is fixed on the rotating shaft 26 by a pin (not shown) passing through the first through hole 261 and the second through hole 331.
The threaded mold core and the rotating shaft are fixed through the pin shaft, so that the rotation consistency of the threaded mold core and the rotating shaft is improved.
The horizontal section of the groove 262 is non-circular, and the horizontal section of the fixed end 33 is matched with the horizontal section of the groove 262; the horizontal cross-section of the groove 262 is rectangular.
The groove which is arranged into a rectangle is used for installing the fixed end, so that on one hand, the rotation consistency of the thread mold core and the rotating shaft can be improved, and the possibility of rotary displacement in the rotating process is avoided; on the other hand, when the stiff end was installed in the recess, can realize accurate location, easy to assemble, can make things convenient for first through-hole and second through-hole coaxial positioning simultaneously.
The middle end 32 comprises a conical section 322 and a cylindrical section 321 which are connected from top to bottom, and the diameter of the bottom surface of the conical section 322 is equal to that of the cylindrical section 321; the threaded end 31 is disposed at the upper end of the frustum section 322, and the fixed end 33 is disposed at the lower end of the cylindrical section 321. By arranging the conical frustum section, when the threaded mold core passes through the through hole 51 on the mold base 5 (the through hole is also arranged to be in an appearance structure matched with the conical frustum section), the conical frustum section can be completely embedded into the through hole 51, and a better sealing effect is achieved.
In another embodiment of the present invention, a position-limiting structure 3221 for positioning the threaded end 31 to ascend may be disposed on the middle side wall of the frustum section 322; the limiting structure 3221 is a limiting ring or a limiting thread, preferably a limiting thread.
Through spacing to the frustum of a cone section, specifically be through the matching of the internal thread 511 in spacing screw thread and the through-hole 51, the height that restriction screw thread end is located the die holder to guarantee injection molding internal thread shaping's height and precision, at this moment, the frustum of a cone section is located the smooth inner wall 512 butt that is located internal thread 511 upper portion in the upper portion region of spacing screw thread and the through-hole 51, can guarantee sealed effect equally.
The number of the auxiliary gears 25 is three to six, and the auxiliary gears are uniformly distributed on the periphery of the main gear 24, so that the multi-station mode can improve the injection molding efficiency.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A demoulding structure with an internal thread structure for injection molding parts is characterized by comprising a bottom plate, a driving mechanism and a thread mold core, wherein a cavity is arranged at the lower part of the bottom plate, a mounting plate is arranged at one side of the bottom plate, the driving mechanism comprises a driving motor, a driving gear, a transmission part, a synchronous gear, a main gear, a secondary gear and a rotating shaft, the driving motor is fixed on the mounting plate, the driving gear is arranged on an output shaft of the driving motor and is positioned at the side of the cavity, the synchronous gear is rotatably arranged on the upper wall in the cavity and is in transmission connection with the driving gear through the transmission part, the main gear which is in coaxial transmission with the synchronous gear is rotatably arranged on the upper end surface of the bottom plate, a plurality of secondary gears are rotatably arranged on the bottom plate and are all meshed with the main gear, the rotating shaft is fixed on the secondary gear, and the thread mold core is arranged at the upper end of the rotating shaft, the driving mechanism synchronously drives the plurality of threaded mold cores to rotate.
2. The demolding structure for an injection-molded article having an internal thread structure according to claim 1, wherein the transmission member is a transmission chain or a transmission gear.
3. The demolding structure for injection-molded parts with an internal thread structure as claimed in claim 1, wherein the threaded mold core comprises a threaded end, a middle end and a fixed end which are connected from top to bottom, the upper end of the rotating shaft is provided with a groove, and the fixed end is inserted into the groove to mount the threaded mold core on the rotating shaft.
4. The demolding structure for injection-molded parts with an internal thread structure as claimed in claim 3, wherein the upper portion of the rotating shaft is provided with a first through hole horizontally penetrating through the body and the groove, the fixing end is provided with a second through hole horizontally penetrating through the body, and the threaded mold core is fixed on the rotating shaft through a pin shaft penetrating through the first through hole and the second through hole.
5. The demolding structure for an injection-molded part having an internal thread structure as claimed in claim 3, wherein the horizontal cross section of the groove is non-circular, and the horizontal cross section of the fixing end matches the horizontal cross section of the groove.
6. The demolding structure for an injection-molded article having an internal thread structure as recited in claim 5, wherein the horizontal cross section of the groove is rectangular.
7. The demolding structure for injection-molded parts with an internal thread structure as claimed in claim 3, wherein the middle end comprises a frustum cone section and a cylindrical section which are connected from top to bottom, and the diameter of the bottom surface of the frustum cone section is equal to that of the cylindrical section; the thread end is arranged at the upper end of the cone section, and the fixed end is arranged at the lower end of the cylinder section.
8. The demolding structure for the injection-molded part with the internal thread structure as claimed in claim 7, wherein a limiting structure for lifting and positioning the thread end is arranged on the side wall of the middle part of the frustum cone section.
9. The demolding structure for an injection-molded part having an internal thread structure as claimed in claim 8, wherein the limit structure is a limit ring or a limit thread.
10. The demolding structure for injection-molded parts with an internal thread structure as claimed in claim 1, wherein the number of the pinion gears is three to six and is uniformly distributed on the peripheral side of the main gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323421.8U CN214726224U (en) | 2020-12-31 | 2020-12-31 | Demolding structure with internal thread structure for injection molding part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323421.8U CN214726224U (en) | 2020-12-31 | 2020-12-31 | Demolding structure with internal thread structure for injection molding part |
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| CN214726224U true CN214726224U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023323421.8U Active CN214726224U (en) | 2020-12-31 | 2020-12-31 | Demolding structure with internal thread structure for injection molding part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829235A (en) * | 2020-12-31 | 2021-05-25 | 苏州市嘉图精工科技有限公司 | Demolding structure with internal thread structure for injection molding part |
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2020
- 2020-12-31 CN CN202023323421.8U patent/CN214726224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112829235A (en) * | 2020-12-31 | 2021-05-25 | 苏州市嘉图精工科技有限公司 | Demolding structure with internal thread structure for injection molding part |
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