CN112829210A - Injection mold forming structure for injection molding part with internal threads - Google Patents
Injection mold forming structure for injection molding part with internal threads Download PDFInfo
- Publication number
- CN112829210A CN112829210A CN202011637926.3A CN202011637926A CN112829210A CN 112829210 A CN112829210 A CN 112829210A CN 202011637926 A CN202011637926 A CN 202011637926A CN 112829210 A CN112829210 A CN 112829210A
- Authority
- CN
- China
- Prior art keywords
- mold
- injection
- mold base
- cavity
- movable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2618—Moulds having screw-threaded mould walls
- B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2001/00—Articles provided with screw threads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold forming structure for injection molding parts with internal threads, which comprises a movable mold and a mold base, wherein the mold base is arranged on the movable mold in a relatively sliding manner, a plurality of forming areas are arranged on the mold base, a plurality of sliding blocks are arranged in the forming areas, mold cores are arranged on one sides of the sliding blocks close to each other, the mold cores are driven by the sliding blocks in a sliding manner to abut against each other to form a cavity, a screw rod is arranged in the cavity area, the screw rod comprises a connecting rod and a threaded rod arranged at the upper end of the connecting rod and used for forming the internal threads, and the connecting rod penetrates through the mold base and then is connected with a driving mechanism arranged on the movable mold through a clamping head.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold forming structure for an injection molding piece with internal threads.
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, the demolding is time-consuming and labor-consuming, the demolding efficiency is low, automatic demolding cannot be realized, the demolding precision is not high, and the injection molding part can be damaged.
Disclosure of Invention
The invention aims to provide a molding structure of an injection mold for injection molding parts with internal threads.
In order to achieve the purpose, the invention adopts the technical scheme that: a molding structure of an injection mold for injection molding parts with internal threads comprises a movable mold and a mold base, wherein the mold base is arranged on the movable mold in a relatively sliding manner, a plurality of molding areas are arranged on the mold base, a plurality of slide blocks are arranged in the molding areas, mold cores are arranged on one sides, close to each other, of the slide blocks, a plurality of mold cores are driven by the slide blocks in a sliding manner to abut against each other to form a cavity, a screw rod is arranged in the cavity area, the screw rod comprises a connecting rod and a threaded rod arranged at the upper end of the connecting rod and used for internal thread molding, the connecting rod penetrates through the mold base and then is connected with a driving mechanism arranged on the movable mold through a chuck, the driving mechanism comprises a motor, a driving gear, a transmission chain, a synchronous gear, a main gear and a secondary gear, the driving gear is arranged, the synchronizing gear is connected with the driving gear through a transmission chain, a plurality of auxiliary gears are rotatably arranged on the movable die and are respectively meshed with the main gear, rotating shafts are arranged in the auxiliary gears, and the clamping heads are clamped in the rotating shafts.
As a further optimization, the movable die and the die holder are both provided with inner cavities, and the driving mechanism is arranged in the inner cavities.
As a further optimization, the die holder is provided with a first positioning column, the movable die is provided with a positioning hole, and the first positioning column is embedded into the positioning hole to position the movable die on one side of the die holder.
As a further optimization, a buffer spring is arranged on one side, close to the positioning hole, of the positioning column.
As a further optimization, a first installation cavity is formed in the die holder, a second installation cavity is formed in one side, close to the positioning hole, of the first installation cavity, a positioning cavity is formed in one side, close to the die holder, of the positioning hole, the positioning column is fixed in the first installation cavity, the buffer spring is arranged in the second installation cavity, and the buffer spring is embedded into the positioning cavity after the die holder is abutted to the movable die.
As a further optimization, one end of the die holder, which is far away from the movable die, is provided with a plurality of second guide posts.
As a further optimization, the slide block is provided with an inclined guide hole.
As a further optimization, a sliding rail used for moving the sliding block is arranged on the die holder.
As a further optimization, an inverted T-shaped sliding groove used for the sliding block to move is formed in the die holder.
As a further optimization, the cold runner is arranged on the die holder.
Compared with the prior art, the invention has the following beneficial effects:
1. the demoulding action of the threaded rod is realized by driving the gear component through the motor, and the demoulding precision and the demoulding efficiency are high due to the higher mechanical transmission structure, and the internal thread structure of the injection molding piece can not be damaged;
2. the motor is arranged on the mounting plate, is positioned outside the movable die and the die holder, and can occupy a smaller space of the die;
3. the action of the buffer spring can avoid the rigid butt joint of the movable die and the die holder during die assembly, so that the movable die and the die holder can be protected, and the service life is prolonged.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a structural view of the driving mechanism of the present invention.
FIG. 3 is a view showing the structure of the screw of the present invention.
Fig. 4 is an installation structure view of the first guide post of the present invention.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 4, an injection mold forming structure for injection molding with internal threads comprises a movable mold 2 and a mold base 1, wherein the mold base 1 is arranged on the movable mold 2 in a relatively sliding manner, the mold base 1 is provided with a plurality of forming areas, a plurality of sliding blocks are arranged in the forming areas, each sliding block comprises a first sliding block 11 and a second sliding block 12, mold cores 1C are arranged on one sides of the first sliding block and the second sliding block close to each other, the plurality of mold cores 1C are driven by the sliding blocks to abut against each other to form a mold cavity 1B, a screw rod 1D is arranged in the mold cavity 1B area, each screw rod 12 comprises a connecting rod 1F and a threaded rod 1E arranged at the upper end of the connecting rod 1F for internal thread forming, the connecting rod 1F passes through the mold base 1 and then is connected with a driving mechanism 3 arranged on the movable mold 2 through a clamping head 1G, the driving gear 32 is arranged at the output end of the motor 31, the synchronous gear is arranged on the movable die 2 and synchronously drives with the driving gear 33, the synchronous gear is connected with the driving gear 32 through a transmission chain, the plurality of auxiliary gears 34 are rotatably arranged on the movable die 2 and are respectively meshed with the driving gear 33, a rotating shaft 35 is arranged in each auxiliary gear, and the chuck 1G is clamped in the rotating shaft 35.
When the injection molding is started, the movable mold is abutted against the mold base through the external driving mechanism, the threaded rod part is located in the cavity area, the injection molding part is movably abutted against the other side of the mold base, the mold cavity is closed after the mold core is driven by the sliding block to abut against, the injection molding is carried out on the mold cavity, and internal threads can be formed on the inner wall of an injection molding piece through the structure of the threaded rod; when demoulding, the motor drives the driving gear to drive the synchronous gear to rotate through the transmission chain, the main gear is synchronously driven to rotate, and the four auxiliary gears are further driven to rotate, so that the rotating shaft is rotated, the rotating shaft drives the threaded rod to rotate through the connecting rod, meanwhile, the external driving mechanism drives the movable mould to be separated from the mould base, so that the threaded rod is separated from the product 1A in a rotating state, and demoulding of the internal thread injection molding piece is realized. The invention realizes the demoulding action of the threaded rod by the motor driving the gear component, and has high demoulding precision and demoulding efficiency due to a higher mechanical transmission structure, and the internal thread structure of the injection molding piece can not be damaged.
The movable die 2 and the die holder 1 are both provided with inner cavities, the driving mechanism 3 is arranged in the inner cavities, specifically, the movable die 2 is provided with an installation plate 21, and the motor is arranged on the installation plate and is positioned outside the movable die and the die holder, so that the space of the die can be occupied less.
Be equipped with first locating column 13 on the die holder 1, be equipped with locating hole 201 on the movable mould 2, first locating column 13 embedding locating hole 201 is interior to be located movable mould 2 in die holder 1 one side, and the accurate die cavity that gets into of screw rod of being convenient for can make the screw rod break away from injection moulding product 1A's internal thread structure along the accurate rotation of axis, avoids it to rock and produces offset.
A buffer spring 14 is arranged on one side of the positioning column 13 close to the positioning hole 201; the die holder 1 is provided with a first installation cavity 103, one side, close to the positioning hole 201, of the first installation cavity 103 is provided with a second installation cavity 104, one side, close to the die holder 1, of the positioning hole 201 is provided with a positioning cavity 202, the positioning column 13 is fixed in the first installation cavity 103, the buffer spring 14 is arranged in the second installation cavity 104, and the buffer spring 14 is embedded into the positioning cavity 202 after the die holder 1 is abutted to the movable die 2.
The action of the buffer spring can avoid the rigid butt joint of the movable die and the die holder during die assembly, so that the movable die and the die holder can be protected, and the service life is prolonged.
Keep away from the one end of movable mould 2 on the die holder 1 and be equipped with a plurality of second guide posts 15, through the positioning action of second guide post, can make things convenient for the accurate butt joint die holder of outside part of moulding plastics.
The first slide block 11 and the second slide block 12 are provided with oblique guide holes 100, so that the first slide block and the second slide block can move oppositely under the action of an external mechanism such as an oblique guide post during die assembly, and a die cavity is formed after the die core is abutted; when the mold is opened, the first slide block and the second slide block can be separated through the action of the inclined guide post, so that the product 1A can fall off smoothly.
A sliding rail 101 for moving the first sliding block 11 is arranged on the die holder 1; the die holder 1 is provided with an inverted T-shaped sliding groove 102 for limiting the movement of the second sliding block 12. The moving precision of the sliding block can be guaranteed through the guide effect of the sliding rail and the inverted T-shaped groove, and the forming precision of the cavity is improved.
The cold runner 16 is arranged on the die holder 1 and used for cooling the injection molding product 1A.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A molding structure of an injection mold for injection molding parts with internal threads is characterized by comprising a movable mold and a mold base, wherein the mold base can be arranged on the movable mold in a relatively sliding manner, a plurality of molding areas are arranged on the mold base, a plurality of slide blocks are arranged in the molding areas, mold inserts are arranged on one sides, close to each other, of the slide blocks, the mold inserts are driven by the slide blocks in a sliding manner to abut against each other to form a cavity, a screw rod is arranged in the cavity area and comprises a connecting rod and a threaded rod arranged at the upper end of the connecting rod and used for internal thread molding, the connecting rod penetrates through the mold base and then is connected with a driving mechanism arranged on the movable mold through a clamping head, the driving mechanism comprises a motor, a driving gear, a transmission chain, a synchronous gear, a main gear and a secondary gear, the driving, the auxiliary gear is rotatably arranged on the movable die and is respectively meshed with the main gear, a rotating shaft is arranged in the auxiliary gear, and the chuck is clamped in the rotating shaft.
2. The injection mold molding apparatus for injection molded parts having internal threads as claimed in claim 1, wherein the movable mold and the mold base each have an internal cavity therein, the drive mechanism being disposed in the internal cavity.
3. The injection mold molding apparatus as claimed in claim 1, wherein the mold base is provided with a first positioning post, the movable mold is provided with a positioning hole, and the first positioning post is inserted into the positioning hole to position the movable mold on one side of the mold base.
4. The structure of claim 3, wherein the positioning post is provided with a buffer spring on a side close to the positioning hole.
5. The injection mold molding structure for injection molding with female thread as claimed in claim 4, wherein the mold base has a first mounting cavity therein, a second mounting cavity is provided in the first mounting cavity on a side close to the positioning hole, a positioning cavity is provided in the positioning hole on a side close to the mold base, the positioning post is fixed in the first mounting cavity, the buffer spring is disposed in the second mounting cavity, and the buffer spring is embedded in the positioning cavity after the mold base is abutted with the movable mold.
6. The injection mold molding apparatus as claimed in claim 1, wherein the mold base has a plurality of second guide posts at an end thereof remote from the movable mold.
7. The injection mold molding structure for injection molded parts with internal threads according to claim 1, wherein the slide block is provided with an inclined guide hole.
8. The injection mold molding apparatus for injection molded parts with internal threads as claimed in claim 1, wherein the mold base is provided with a slide rail for moving the slide block.
9. The injection mold molding apparatus for injection molded parts with internal threads as claimed in claim 1, wherein said mold base is provided with an inverted T-shaped runner for movement of the slide.
10. The injection mold molding apparatus for injection molded parts with internal threads of claim 1, wherein said mold base is provided with a cold runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011637926.3A CN112829210A (en) | 2020-12-31 | 2020-12-31 | Injection mold forming structure for injection molding part with internal threads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011637926.3A CN112829210A (en) | 2020-12-31 | 2020-12-31 | Injection mold forming structure for injection molding part with internal threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112829210A true CN112829210A (en) | 2021-05-25 |
Family
ID=75926735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011637926.3A Pending CN112829210A (en) | 2020-12-31 | 2020-12-31 | Injection mold forming structure for injection molding part with internal threads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112829210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117103584A (en) * | 2023-10-20 | 2023-11-24 | 天津胜维德赫华翔汽车零部件有限公司 | Production injection mold of multifunctional compensation part of automobile rearview mirror |
-
2020
- 2020-12-31 CN CN202011637926.3A patent/CN112829210A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117103584A (en) * | 2023-10-20 | 2023-11-24 | 天津胜维德赫华翔汽车零部件有限公司 | Production injection mold of multifunctional compensation part of automobile rearview mirror |
| CN117103584B (en) * | 2023-10-20 | 2024-02-20 | 天津胜维德赫华翔汽车零部件有限公司 | Production injection mold of multifunctional compensation part of automobile rearview mirror |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109605682B (en) | Injection mould | |
| CN111300758A (en) | Screw thread core-pulling mechanism and injection mold | |
| CN112829210A (en) | Injection mold forming structure for injection molding part with internal threads | |
| CN215550473U (en) | Injection mold forming structure for injection molding part with internal threads | |
| CN219705945U (en) | Internal thread injection mold convenient to drawing of patterns | |
| CN115027003B (en) | Pipe joint injection mold and in-mold assembly method | |
| CN217752544U (en) | But quick demoulding's mould | |
| CN214726224U (en) | Demolding structure with internal thread structure for injection molding part | |
| CN211031020U (en) | Injection mold structure and mold thereof | |
| CN211993969U (en) | Plastic injection molding novel mold easy to demould | |
| CN108177311B (en) | Injection molding device for injection molding piece without rotation stopping structure and with different screw pitches and double internal threads | |
| CN217495062U (en) | Internal thread core-pulling mechanism and die | |
| CN208745239U (en) | A kind of screw element injection mold | |
| CN111186121A (en) | Injection blow molding device and molding method | |
| CN220883219U (en) | Injection mold for plastic pipe production | |
| CN220763356U (en) | Injection mold for faucet mandrel | |
| CN211074541U (en) | Injection mold and composite demolding mechanism thereof | |
| CN219114665U (en) | Mould | |
| CN215151002U (en) | Prevent to glue mould structure of recess of front mould | |
| CN219236037U (en) | High-precision die for rotary demolding | |
| CN214419465U (en) | Injection mold for top cover of wine bottle | |
| CN219947032U (en) | Injection mold for molding plastic package hardware product | |
| CN220864643U (en) | Multicavity injection molding device | |
| CN214872391U (en) | Plastic high chair mold with fixed mold side pre-mold opening and core pulling mechanism | |
| CN212372578U (en) | Compound quick forming die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |