CN118181675A - Injection mold and injection molding method - Google Patents
Injection mold and injection molding method Download PDFInfo
- Publication number
- CN118181675A CN118181675A CN202410522559.4A CN202410522559A CN118181675A CN 118181675 A CN118181675 A CN 118181675A CN 202410522559 A CN202410522559 A CN 202410522559A CN 118181675 A CN118181675 A CN 118181675A
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- Prior art keywords
- rod
- die shell
- shaped
- plate
- injection molding
- 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.)
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Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000012778 molding material Substances 0.000 claims abstract description 10
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C2045/4036—Ejector constructions; Ejector operating mechanisms driven by a screw and nut mechanism
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection mold and an injection molding method thereof, comprising a demolding assembly, wherein the demolding assembly comprises a U-shaped plate, a lower mold shell, an upper mold shell, a driving motor, a push plate, a connecting rod, a trapezoid plate, a spring, a screw rod, a moving rod and a ball; the top of the U-shaped plate is fixedly connected with a lower die shell. According to the invention, injection molding materials are poured into the lower die shell and the upper die shell through the injection molding openings, injection molding is carried out through the lower die shell and the upper die shell, the upper die shell and the lower die shell are separated after injection molding, the driving motor is started to drive the moving rod through the screw rod, the moving rod drives the ball to move and contact with the inclined surface on the trapezoid plate and extrude, so that the trapezoid plate drives the connecting rod to move upwards, the trapezoid plate compresses the spring in the moving process, the connecting rod drives the push plate to move upwards, and the push plate ejects the molded die, thereby facilitating the die stripping after injection molding, reducing the production cost, avoiding damage to plastic products in the demolding process and improving the product quality.
Description
Technical Field
The invention relates to the technical field of molds, in particular to an injection mold and an injection molding method.
Background
Injection molds are a widely used molding tool in industrial production, particularly in the field of plastic product processing. The working principle is that molten plastic is injected into a cavity of a mold through pressure, and after the plastic is cooled and solidified, a plastic product with the shape identical to that of the cavity of the mold is obtained. However, in the actual production process, a problem of difficulty in demolding a mold is often encountered, which becomes one of important factors restricting the production efficiency of the mold;
Specifically, after molten plastic is injected into a mold cavity, due to the fluidity of the plastic and the contractibility in the cooling process, certain adhesion force is generated between the plastic and the inner wall of the mold, after injection molding is completed, if the mold and the inner wall are mutually collided, the adhesion force is further increased, so that the mold is difficult to demold, the production period is prolonged, the production cost is increased, and the plastic product is possibly damaged in the demolding process, and the product quality is influenced.
Disclosure of Invention
In view of the above, the present invention provides an injection mold and an injection molding method, which solve or alleviate the technical problems in the prior art, and at least provide a beneficial choice.
The technical scheme of the embodiment of the invention is realized as follows:
First aspect: the injection mold comprises a demolding assembly, wherein the demolding assembly comprises a U-shaped plate, a lower mold shell, an upper mold shell, a driving motor, a push plate, a connecting rod, a trapezoid plate, a spring, a screw rod, a moving rod and balls;
The top fixedly connected with lower mould casing of U-shaped board, the top movable contact of lower mould casing has last mould casing, the right side fixedly connected with driving motor of U-shaped board, be equipped with the push pedal on the bottom inner wall of lower mould casing, the bottom fixedly connected with two connecting rods of push pedal, two the bottom of connecting rod extends to the below of U-shaped board and fixedly connected with trapezoidal board, one side of trapezoidal board sets up the inclined plane, the welding has two springs between the top of trapezoidal board and the top inner wall of U-shaped board, the spring movable sleeve is established on the connecting rod that corresponds, rotate on the right side inner wall of U-shaped board and be connected with the lead screw, the tip of lead screw extends to outside the U-shaped board and with driving motor's output shaft fixed connection, threaded connection has the movable rod on the lead screw, the ball is inlayed to the tip of movable rod, ball and inclined plane rolling contact.
Further preferably, a square rod is welded on the inner wall of the right side of the U-shaped plate, an L-shaped rod is connected to the square rod in a sliding mode, and the end portion of the L-shaped rod is fixedly connected with one side of the movable rod.
Further preferably, a mold clamping assembly is arranged on one side of the demolding assembly, and the mold clamping assembly comprises a vertical rod, a transverse plate and an electric push rod;
The top welding of U shaped plate has four montants, four the top welding of montant has same diaphragm, the bottom fixedly connected with two electric putter of diaphragm, electric putter's output and the top fixed connection of last mould shell.
Further preferably, the bottom of the transverse plate is fixedly connected with two T-shaped rods, and limiting blocks are connected to the T-shaped rods in a sliding manner.
Further preferably, one side of the limiting block is fixedly connected with one side of the upper die shell.
Further preferably, the top of the upper die shell is communicated with and fixed with an injection molding opening.
Further preferably, the moving rod is provided with a threaded hole, and the moving rod is in threaded connection with the screw rod through the threaded hole.
Further preferably, the L-shaped rod is provided with a limit groove, and the L-shaped rod is in sliding connection with the square rod through the limit groove.
Second aspect: the invention also provides an injection molding method, which comprises the following steps:
S1, pouring injection molding materials into a lower die shell and an upper die shell through an injection molding opening, injecting the injection molding materials into the lower die shell and the upper die shell, starting an electric push rod after injection molding, enabling the electric push rod to drive the upper die shell to move upwards, enabling the upper die shell to drive a limiting block to slide on a corresponding T-shaped rod, and separating the upper die shell from the lower die shell;
s2, starting a driving motor, driving the screw rod to rotate by the driving motor, driving the movable rod by the screw rod, driving the L-shaped rod to slide on the square rod by the movable rod, and driving the balls to move by the movable rod;
S3, enabling the balls to be in contact with the inclined surface on the trapezoid plate and to be extruded, under the action of extrusion force, enabling the trapezoid plate to drive the connecting rod to move upwards, enabling the trapezoid plate to compress the spring in the moving process, enabling the connecting rod to drive the push plate to move upwards, and enabling the push plate to push out the molded die.
Further preferably, the T-shaped rod in S1 limits the upper die casing through a limiting block.
By adopting the technical scheme, the embodiment of the invention has the following advantages:
According to the invention, injection molding materials are poured into the lower die shell and the upper die shell through the injection molding openings, injection molding is carried out through the lower die shell and the upper die shell, the upper die shell and the lower die shell are separated after injection molding, the driving motor is started to drive the moving rod through the screw rod, the moving rod drives the ball to move and contact with the inclined surface on the trapezoid plate and extrude, so that the trapezoid plate drives the connecting rod to move upwards, the trapezoid plate compresses the spring in the moving process, the connecting rod drives the push plate to move upwards, and the push plate ejects the molded die, thereby facilitating the die demolding after injection molding, reducing the production period, reducing the production cost, avoiding damage to plastic products in the demolding process and improving the product quality.
The foregoing summary is for the purpose of the specification only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become apparent by reference to the drawings and the following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of the other side of the present invention;
FIG. 3 is a partial perspective view of the present invention;
Fig. 4 is a perspective view showing the connection of the trapezoidal plate, the connecting rod, the ball, the screw and the moving rod according to the present invention.
Reference numerals: 1. a demolding assembly; 2. a U-shaped plate; 3. a lower die housing; 4. an upper die housing; 5. a driving motor; 6. a push plate; 7. a connecting rod; 8. a trapezoidal plate; 9. a spring; 10. a screw rod; 11. a moving rod; 12. a ball; 13. square rods; 14. an L-shaped rod; 15. a mold assembly; 16. a vertical rod; 17. a cross plate; 18. an electric push rod; 19. a T-bar; 20. a limiting block; 21. and (5) an injection molding port.
Detailed Description
Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the embodiment of the invention provides an injection mold, which comprises a demolding assembly 1, wherein the demolding assembly 1 comprises a U-shaped plate 2, a lower mold shell 3, an upper mold shell 4, a driving motor 5, a push plate 6, a connecting rod 7, a trapezoid plate 8, a spring 9, a screw rod 10, a moving rod 11 and a ball 12;
The top of the U-shaped plate 2 is fixedly connected with a lower die shell 3, the top of the lower die shell 3 is movably contacted with the right side of an upper die shell 4,U plate 2 and is fixedly connected with a driving motor 5, a push plate 6 is arranged on the inner wall of the bottom of the lower die shell 3, the bottom of the push plate 6 is fixedly connected with two connecting rods 7, the bottom ends of the two connecting rods 7 extend to the lower side of the U-shaped plate 2 and are fixedly connected with a trapezoid plate 8, one side of the trapezoid plate 8 is provided with an inclined surface, two springs 9 are welded between the top of the trapezoid plate 8 and the inner wall of the top of the U-shaped plate 2, the springs 9 are movably sleeved on the corresponding connecting rods 7, a screw rod 10 is rotationally connected on the inner wall of the right side of the U-shaped plate 2, the end part of the screw rod 10 extends to the outside of the U-shaped plate 2 and is fixedly connected with an output shaft of the driving motor 5, a movable rod 11 is connected on the screw rod 10, the end of the moving rod 11 is embedded with a ball 12, the ball 12 is in rolling contact with the inclined surface, injection molding materials are poured into the lower die shell 3 and the upper die shell 4 through the injection molding opening 21, injection molding is carried out on the upper die shell 4 and the lower die shell 3 through the lower die shell 3 and the upper die shell 4, the driving motor 5 is started to drive the screw rod 10 to rotate, the screw rod 10 drives the moving rod 11, the moving rod 11 drives the ball 12 to move, the ball 12 is enabled to be in contact with and extrusion with the inclined surface on the trapezoid plate 8, under the action of extrusion force, the trapezoid plate 8 drives the connecting rod 7 to move upwards, the trapezoid plate 8 compresses the spring 9 in the moving process, the connecting rod 7 drives the push plate 6 to move upwards, the push plate 6 ejects the molded die, and therefore the die after injection molding is convenient to demould.
In one embodiment, a square rod 13 is welded on the right inner wall of the U-shaped plate 2, an L-shaped rod 14 is slidably connected to the square rod 13, the end of the L-shaped rod 14 is fixedly connected with one side of the moving rod 11, and the square rod 13 limits the L-shaped rod 14.
In one embodiment, one side of the demolding assembly 1 is provided with a mold clamping assembly 15, and the mold clamping assembly 15 comprises a vertical rod 16, a transverse plate 17 and an electric push rod 18;
The top welding of U shaped plate 2 has four montants 16, and the top welding of four montants 16 has same diaphragm 17, and the bottom fixedly connected with of diaphragm 17 has two electric putter 18, and electric putter 18's output and the top fixed connection of last mould shell 4.
In one embodiment, two T-shaped rods 19 are fixedly connected to the bottom of the transverse plate 17, a limiting block 20 is slidably connected to the T-shaped rods 19, one side of the limiting block 20 is fixedly connected with one side of the upper die shell 4, and the limiting block 20 plays a limiting role.
In one embodiment, the top of the upper mold housing 4 communicates with and is secured with an injection port 21.
In one embodiment, the moving rod 11 is provided with a threaded hole, the moving rod 11 is in threaded connection with the screw rod 10 through the threaded hole, and the moving rod 11 can be fixed after moving a proper position under the biting force of the threaded hole and the screw rod 10.
In one embodiment, the L-shaped rod 14 is provided with a limiting groove, the L-shaped rod 14 is slidably connected with the square rod 13 through the limiting groove, and the setting of the L-shaped rod 14 plays a limiting role.
The invention also provides an injection molding method, which comprises the following steps:
S1, pouring injection molding materials into a lower die shell 3 and an upper die shell 4 through an injection molding opening 21, performing injection molding through the lower die shell 3 and the upper die shell 4, starting an electric push rod 18 after injection molding, enabling the electric push rod 18 to drive the upper die shell 4 to move upwards, enabling the upper die shell 4 to drive a limiting block 20 to slide on a corresponding T-shaped rod 19, and separating the upper die shell 4 from the lower die shell 3;
s2, starting a driving motor 5, driving the driving motor 5 to drive a screw rod 10 to rotate, driving a moving rod 11 by the screw rod 10, driving an L-shaped rod 14 to slide on a square rod 13 by the moving rod 11, and driving a ball 12 to move by the moving rod 11;
S3, enabling the balls 12 to be in contact with the inclined surface on the trapezoid plate 8 and extrusion, under the action of extrusion force, enabling the trapezoid plate 8 to drive the connecting rod 7 to move upwards, enabling the trapezoid plate 8 to compress the spring 9 in the moving process, enabling the connecting rod 7 to drive the push plate 6 to move upwards, and enabling the push plate 6 to push out a formed die.
In one embodiment, the T-bar 19 in S1 is used to limit the upper housing 4 by a limit block 20.
The invention works when in work: pouring injection molding materials into the lower die shell 3 and the upper die shell 4 through the injection molding opening 21, injecting and molding the injection molding materials through the lower die shell 3 and the upper die shell 4, starting the electric push rod 18, driving the upper die shell 4 to move upwards by the electric push rod 18, driving the limiting block 20 to slide on the corresponding T-shaped rod 19, separating the upper die shell 4 from the lower die shell 3, starting the driving motor 5, driving the screw rod 10 to rotate by the driving motor 5, driving the moving rod 11 by the screw rod 10, driving the L-shaped rod 14 to slide on the square rod 13 by the moving rod 11, driving the balls 12 to move simultaneously, enabling the balls 12 to contact and extrude with inclined surfaces on the trapezoid plate 8, driving the connecting rod 7 to move upwards by the trapezoid plate 8 under the action of extrusion force, compressing the spring 9 by the trapezoid plate 8, driving the push plate 6 to move upwards by the connecting rod 7, ejecting the molded mold by the push plate 6, and demolding of the molded mold is facilitated.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. Injection mold, comprising a stripper assembly (1), characterized in that: the demolding assembly (1) comprises a U-shaped plate (2), a lower mold shell (3), an upper mold shell (4), a driving motor (5), a push plate (6), a connecting rod (7), a trapezoid plate (8), a spring (9), a screw rod (10), a moving rod (11) and a ball (12);
The utility model provides a die shell is gone up in top fixedly connected with down die shell (3) of U-shaped board (2), the top movable contact of lower die shell (3) has last die shell (4), right side fixedly connected with driving motor (5) of U-shaped board (2), be equipped with push pedal (6) on the bottom inner wall of lower die shell (3), the bottom fixedly connected with two connecting rods (7) of push pedal (6), two the bottom of connecting rod (7) extends to the below of U-shaped board (2) and fixedly connected with trapezoidal board (8), one side of trapezoidal board (8) sets up the inclined plane, welding has two springs (9) between the top of trapezoidal board (8) and the top inner wall of U-shaped board (2), spring (9) movable sleeve is established on connecting rod (7) that correspond, rotate on the right side inner wall of U-shaped board (2) and be connected with lead screw (10), the tip of lead screw (10) extends to the outside of U-shaped board (2) and with driving motor (5) output shaft fixed connection, be connected with ball contact (12) on one side of trapezoidal board (8), ball contact (12) are equipped with on the inclined plane.
2. An injection mold according to claim 1, characterized in that: the right side inner wall of the U-shaped plate (2) is welded with a square rod (13), the square rod (13) is connected with an L-shaped rod (14) in a sliding mode, and the end portion of the L-shaped rod (14) is fixedly connected with one side of the movable rod (11).
3. An injection mold according to claim 1, characterized in that: a mold clamping assembly (15) is arranged on one side of the demolding assembly (1), and the mold clamping assembly (15) comprises a vertical rod (16), a transverse plate (17) and an electric push rod (18);
The top welding of U shaped board (2) has four montants (16), four the top welding of montant (16) has same diaphragm (17), the bottom fixedly connected with of diaphragm (17) two electric putter (18), the output of electric putter (18) and the top fixed connection of last mould shell (4).
4. An injection mold according to claim 3, characterized in that: two T-shaped rods (19) are fixedly connected to the bottom of the transverse plate (17), and limiting blocks (20) are connected to the T-shaped rods (19) in a sliding mode.
5. The injection mold of claim 4, wherein: one side of the limiting block (20) is fixedly connected with one side of the upper die shell (4).
6. An injection mold according to claim 1, characterized in that: the top of the upper die shell (4) is communicated and fixed with an injection molding opening (21).
7. An injection mold according to claim 1, characterized in that: threaded holes are formed in the moving rods (11), and the moving rods (11) are in threaded connection with the screw rods (10) through the threaded holes.
8. An injection mold according to claim 2, characterized in that: the L-shaped rod (14) is provided with a limiting groove, and the L-shaped rod (14) is in sliding connection with the square rod (13) through the limiting groove.
9. An injection molding method, characterized in that: an injection mould using any one of claims 1-8, comprising the steps of:
s1, pouring injection molding materials into a lower die shell (3) and an upper die shell (4) through an injection molding opening (21), injecting the injection molding materials through the lower die shell (3) and the upper die shell (4), starting an electric push rod (18), driving the upper die shell (4) to move upwards by the electric push rod (18), driving a limiting block (20) to slide on a corresponding T-shaped rod (19) by the upper die shell (4), and separating the upper die shell (4) from the lower die shell (3);
s2, starting a driving motor (5), driving the screw rod (10) to rotate by the driving motor (5), driving the moving rod (11) by the screw rod (10), driving the L-shaped rod (14) to slide on the square rod (13) by the moving rod (11), and driving the ball (12) to move by the moving rod (11);
S3, enabling the balls (12) to be in contact with the inclined surface on the trapezoid plate (8) and extrusion, under the action of extrusion force, enabling the trapezoid plate (8) to drive the connecting rod (7) to move upwards, enabling the trapezoid plate (8) to compress the spring (9) in the moving process, enabling the connecting rod (7) to drive the push plate (6) to move upwards, and enabling the push plate (6) to push out a molded die.
10. An injection molding process according to claim 9, wherein: the T-shaped rod (19) in the S1 limits the upper die shell (4) through a limiting block (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410522559.4A CN118181675A (en) | 2024-04-28 | 2024-04-28 | Injection mold and injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410522559.4A CN118181675A (en) | 2024-04-28 | 2024-04-28 | Injection mold and injection molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118181675A true CN118181675A (en) | 2024-06-14 |
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ID=91409297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410522559.4A Pending CN118181675A (en) | 2024-04-28 | 2024-04-28 | Injection mold and injection molding method |
Country Status (1)
| Country | Link |
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| CN (1) | CN118181675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119658245A (en) * | 2025-02-19 | 2025-03-21 | 浙江旭光电子科技股份有限公司 | Welding tool with protection structure for producing LED lamp |
-
2024
- 2024-04-28 CN CN202410522559.4A patent/CN118181675A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119658245A (en) * | 2025-02-19 | 2025-03-21 | 浙江旭光电子科技股份有限公司 | Welding tool with protection structure for producing LED lamp |
| CN119658245B (en) * | 2025-02-19 | 2025-09-09 | 浙江旭光电子科技股份有限公司 | Welding tool with protection structure for producing LED lamp |
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