CN111347625A - Injection molding part mold with internal threads and demolding method thereof - Google Patents
Injection molding part mold with internal threads and demolding method thereof Download PDFInfo
- Publication number
- CN111347625A CN111347625A CN202010219775.3A CN202010219775A CN111347625A CN 111347625 A CN111347625 A CN 111347625A CN 202010219775 A CN202010219775 A CN 202010219775A CN 111347625 A CN111347625 A CN 111347625A
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- wall
- block
- mold
- push
- die
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- 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
-
- 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
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- 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
Abstract
The invention discloses an injection molding piece mold with internal threads, which belongs to the technical field of molds and comprises a lower mold, wherein the outer wall of the top of the lower mold is provided with an upper mold, the outer wall of the lower mold is provided with a groove, mold blocks are inserted into the left side and the right side of the inner cavity of the groove, the outer wall of the top of the mold block is provided with a sliding groove, two groups of connecting rods are arranged between the upper inner wall and the lower inner wall of the groove and positioned in the inner cavity of the sliding groove, the outer walls of the left side and the right side of the lower mold, which are close to each other, are respectively in sliding connection with the outer walls of the left side and the right side of the lower mold, the outer walls of the left side and the right side of the lower mold are provided with sleeves, the top ends of the stoppers penetrate through the sleeves, the stoppers are, thereby facilitating the product to be taken out of the lower die.
Description
Technical Field
The invention relates to the technical field of molds, in particular to an injection molding piece mold with internal threads and a demolding method thereof.
Background
The mold is a device for manufacturing molded articles, when the existing injection molding mold with internal threads is used, the surfaces of processed products are also provided with threads through the internal threads arranged inside the mold, however, the injection molded products are tightly attached to the inner wall of the mold, and the products are inconvenient to take out due to the existence of the threads.
Disclosure of Invention
The invention aims to provide an injection molding part mould with internal threads and a demoulding method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an injection molding piece mold with internal threads comprises a lower mold, wherein an upper mold is arranged on the outer wall of the top of the lower mold, the outer wall of the lower die is provided with a slot, the cross section of the slot is circular, the left side and the right side of the cavity of the slot are inserted with model blocks, the inner wall of one side of the two groups of model blocks opposite to each other is provided with internal threads, the outer wall of the top of the model block is provided with a chute, two groups of connecting rods are arranged between the inner walls of the upper side and the lower side of the chute, the connecting rod is positioned in the inner cavity of the sliding groove, the outer walls of the left side and the right side of the lower die are respectively provided with a stop block, the outer walls of one side of the two groups of stop blocks which are close to each other are respectively connected with the outer walls of the left side and the right side of the lower die in a sliding way, and the outer wall of one side that two sets of dog are close to each other is laminated with the outer wall of one side that two sets of model pieces kept away from each other respectively mutually, the lower mould left and right sides outer wall all is provided with the sleeve pipe, the sleeve pipe is run through on the dog top.
Preferably, the mounting groove has been seted up to lower mould bottom central authorities inner wall, the mounting groove inner chamber is provided with the ejector pad, the trompil has all been seted up to the mounting groove left and right sides bottom inner wall, and the trompil inner chamber is pegged graft and is had the push rod, the push rod outer wall has cup jointed the spring, and the outer wall fixed connection of spring one end and push rod, and the inner wall fixed connection of the spring other end and trompil, and is two sets of one side outer wall that the push rod is close to each other is laminated with the.
Preferably, the left side dog left side top outer wall has seted up the guide way, the guide way inner chamber is pegged graft and is had the stopper, be provided with supporting spring between stopper right side outer wall and the guide way right side inner wall, stopper bottom outer wall and left side sleeve pipe top outer wall are laminated mutually.
Preferably, the outer wall of the bottom of the push block is fixedly connected with the supporting block, and the outer wall of the bottom of the supporting block is attached to the inner wall of the bottom of the mounting groove.
Preferably, the outer wall of the lower die is sleeved with the connecting ring, and the outer walls of the bottoms of the two groups of check blocks are fixedly connected with the outer walls of the left side and the right side of the top of the connecting ring respectively.
Preferably, the outer wall of the bottom of the model block is fixedly connected with the moving block, moving grooves are formed in the inner walls of the left side and the right side of the bottom of each groove, the bottom end of the moving block is inserted into an inner cavity of each moving groove, and a reset spring is arranged between the outer wall of the moving block and the inner wall of each moving groove.
Preferably, the outer wall of the push block is connected with the inner wall of the mounting groove in a sliding mode, and the push block and the supporting block are both counterweight steel blocks.
Preferably, the demolding method of the injection molding part mold with the internal thread comprises the following steps:
s1: placing an upper die above a lower die, closing the die, injecting an injection molding raw material into a cavity of the die from a sprue of the upper die, and producing a product;
s2: after the product is cooled and formed, opening the mold, removing the upper mold from the upper part of the lower mold, then pushing the limiting block rightwards, pulling the stop block downwards, removing the stop block from the outer side of the model block, resetting through the reset spring, enabling the moving block to pull the model block outwards, enabling the model block not to be in contact with the product, and then collecting the product;
s3: also can promote the push rod to the inboard, make the ejector pad rebound, push away the product from the inner chamber of lower mould, collect the product, collect the back that finishes, promote the model piece to the inboard, upwards pass the sleeve pipe with the dog top again, through supporting spring expansion, make stopper bottom and left side sleeve pipe top contact, reset the model piece, after that repetitive operation continues production.
Compared with the prior art, the invention has the beneficial effects that:
1. in the device, the stop block is moved away from the outer side of the model block downwards, the reset spring is used for resetting, the moving block drives the model block to move outwards, the model block is moved out of the inner cavity of the lower die, and the internal thread is not contacted with a product, so that the product is conveniently taken out of the lower die;
2. push rod is pushed to the inboard, makes the ejector pad upwards promote, upwards pushes up the product from the lower mould, further makes things convenient for taking out the product from the lower mould, increases the result of use of device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the connection between the lower mold and the mold block according to the present invention;
FIG. 3 is an enlarged view of the structure A of the present invention.
In the figure: 1. a lower die; 2. an upper die; 3. grooving; 4. a model block; 5. a chute; 6. a connecting rod; 7. a stopper; 8. a sleeve; 9. a moving block; 10. a return spring; 11. a moving groove; 12. a guide groove; 13. a limiting block; 14. a connecting ring; 15. mounting grooves; 16. a push block; 17. opening a hole; 18. a push rod; 19. a spring; 20. and (7) a supporting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: referring to fig. 1, an injection molding mold with internal threads comprises a lower mold 1;
referring to fig. 1 and 2, an upper die 2 is arranged on the outer wall of the top of a lower die 1, a gate is arranged on the top of the upper die 2 and used for injecting injection molding raw materials, a slot 3 is formed in the outer wall of the lower die 1, the cross section of the slot 3 is circular, model blocks 4 are inserted into the left side and the right side of the inner cavity of the slot 3, the two groups of model blocks 4 are annular together, internal threads are formed in the inner wall of one side of each of the two groups of model blocks 4, and the surface of an injection molding product;
referring to fig. 1 and 2, the outer wall of the top of the mold block 4 is provided with a chute 5, two groups of connecting rods 6 are arranged between the inner walls of the upper and lower sides of the slot 3, the connecting rods 6 are fixedly connected with the inner walls of the upper and lower sides of the slot 3, the connecting rod 6 is positioned in the inner cavity of the sliding groove 5, the mold block 4 moves left and right to enable the sliding groove 5 to move left and right on the outer wall of the connecting rod 6, the outer walls of the left and right sides of the lower mold 1 are respectively provided with the stop blocks 7, the outer walls of one side, close to each other, of the two groups of stop blocks 7 are respectively in sliding connection with the outer walls of the left and right sides of the lower mold 1, the stop blocks 7 can move up and down on the side wall of the lower mold 1, the stop blocks 7 are pulled downwards to enable the stop blocks 7 not to be in contact with the mold block 4, the mold block 4 is pulled outwards to shift the mold block 4 out of the inner cavity of the lower mold 1, so;
referring to fig. 1, the outer walls of the two sets of stoppers 7 close to each other are respectively attached to the outer walls of the two sets of mold blocks 4 far away from each other, sleeves 8 are arranged on the outer walls of the left and right sides of the lower mold 1, the sleeves 8 are fixedly connected with the lower mold 1, the top ends of the stoppers 7 penetrate through the sleeves 8 to support the stoppers 7, so that the stoppers 7 stably support the mold blocks 4, and the mold blocks 4 are ensured not to automatically move when the mold is used;
referring to fig. 1, a mounting groove 15 is formed in the central inner wall of the bottom of a lower die 1, a push block 16 is disposed in an inner cavity of the mounting groove 15, openings 17 are formed in the inner walls of the left and right sides of the bottom of the mounting groove 15, push rods 18 are inserted into the inner cavities of the openings 17, the front and rear side walls of the push rods 18 are slidably connected with the front and rear inner walls of the openings 17, so that the push rods 18 can only move left and right, when the push rods 18 support the push blocks 16, the push blocks 16 can move upward, and the using effect of the push blocks 16 is ensured, springs 19 are sleeved on the outer walls of the push rods 18, one ends of the springs 19 are fixedly connected with the outer walls of the push rods 18, the other ends of the springs 19 are fixedly connected with the inner walls of the openings 17, the outer walls of the two sets of push rods 18 close to each other are respectively, the pushing block 16 is pushed upwards to push the product upwards from the lower die 1, so that the product is further conveniently taken out from the lower die 1, and the using effect of the device is improved;
referring to fig. 1 and 3, a guide groove 12 is formed in the outer wall of the top of the left side of a left side stop block 7, a limit block 13 is inserted into the inner cavity of the guide groove 12, the outer wall of the limit block 13 is slidably connected with the inner wall of the guide groove 12, so that the limit block 13 can only move left and right, a support spring is arranged between the outer wall of the right side of the limit block 13 and the inner wall of the right side of the guide groove 12, the support spring is fixedly connected with the outer wall of the limit block 13 and the inner wall of the guide groove 12, the outer wall of the bottom of the limit block 13 is attached to the outer wall of the top of a left side sleeve 8, the stop block 7 is fixed, so that the stop block 7 cannot automatically move downwards, the;
referring to fig. 1, the outer wall of the bottom of the push block 16 is fixedly connected with the supporting block 20, the outer wall of the bottom of the supporting block 20 is attached to the inner wall of the bottom of the mounting groove 15, and the push block 16 supports the push block 16, so that when the bottom of the supporting block 20 contacts with the inner wall of the bottom of the mounting groove 15, the push block 16 does not move downwards continuously, the top of the push block 16 is flush with the bottom of the inner cavity of the lower die 1, the processing quality of a product is ensured, a gap is reserved between the bottom of the push block 16 and the inner wall of the bottom of the mounting groove 15, a push rod 18 can be inserted into;
referring to fig. 1 and 3, the outer wall of the lower die 1 is sleeved with a connecting ring 14, the outer walls of the bottoms of the two sets of stoppers 7 are respectively fixedly connected with the outer walls of the left side and the right side of the top of the connecting ring 14, the left stopper 7 or the right stopper 7 is pulled to move, and the other stopper 7 can be driven to move together through the connecting ring 14, so that the stoppers 7 can be conveniently moved, and the operation of workers is facilitated;
referring to fig. 1 and 3, the outer wall of the bottom of the model block 4 is fixedly connected with the moving block 9, the inner walls of the left side and the right side of the bottom of the open groove 3 are both provided with moving grooves 11, the bottom end of the moving block 9 is inserted into an inner cavity of the moving groove 11, the moving block 9 can only move left and right in the inner cavity of the moving groove 11, a return spring 10 is arranged between the outer wall of the moving block 9 and the inner wall of the moving groove 11, the return spring 10 is fixedly connected with the outer wall of the moving block 9 and the inner wall of the moving groove 11, when the stop block 7 is moved away from the outer side of the model block 4, the return spring 10 is reset, so that the moving block 9 pulls;
referring to fig. 1, the outer wall of the push block 16 is slidably connected to the inner wall of the mounting groove 15, so that the push block 16 can only move up and down, the push block 16 and the support block 20 are made of steel, when the push rod 18 moves outward, the push block 16 automatically moves downward under the influence of its own gravity, thereby facilitating the reset of the push block 16, and the push block 16 and the support block 20 are made of counterweight steel.
A demoulding method of an injection molding part mould with internal threads comprises the following steps:
s1: placing an upper die 2 above a lower die 1, closing the die, and then injecting an injection molding raw material into a cavity of the die from a sprue of the upper die 2 to produce a product;
s2: after the product is cooled and formed, opening the mold, removing the upper mold 2 from the upper part of the lower mold 1, then pushing the limiting block 13 rightwards, pulling the stop block 7 downwards, removing the stop block 7 from the outer side of the model block 4, resetting through the reset spring 10, pulling the model block 4 outwards by the movable block 9, enabling the model block 4 not to be in contact with the product, and then collecting the product;
s3: also can push away push rod 18 to the inboard, make ejector pad 16 rebound, push away the product from the inner chamber of lower mould 1, collect the product, collect the back that finishes, push away model piece 4 to the inboard, upwards pass sleeve pipe 8 with dog 7 top again, through supporting spring expansion, make stopper 13 bottom and the contact of left side sleeve pipe 8 top, reset model piece 4, repetitive operation continues production after that.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an injection molding mould of utensil internal thread, includes lower mould (1), its characterized in that: the outer wall of the top of the lower die (1) is provided with an upper die (2), the outer wall of the lower die (1) is provided with a slot (3), the cross section of the slot (3) is circular, the left side and the right side of the inner cavity of the slot (3) are respectively inserted with a model block (4), the inner walls of two groups of model blocks (4) at opposite sides are respectively provided with an internal thread, the outer wall of the top of the model block (4) is provided with a chute (5), two groups of connecting rods (6) are arranged between the inner walls of the upper side and the lower side of the slot (3), the connecting rods (6) are positioned in the inner cavity of the chute (5), the outer walls of the left side and the right side of the lower die (1) are respectively provided with a stop block (7), the outer walls of one side, which are close to each other, of the two groups of stop blocks (7) are, the outer walls of the left side and the right side of the lower die (1) are provided with sleeves (8), and the top ends of the stop blocks (7) penetrate through the sleeves (8).
2. The injection mold of claim 1, wherein: mounting groove (15) have been seted up to lower mould (1) bottom central authorities inner wall, mounting groove (15) inner chamber is provided with ejector pad (16), trompil (17) have all been seted up to mounting groove (15) left and right sides bottom inner wall, and trompil (17) inner chamber is pegged graft and is had push rod (18), spring (19) have been cup jointed to push rod (18) outer wall, and the outer wall fixed connection of spring (19) one end and push rod (18), and the inner wall fixed connection of the spring (19) other end and trompil (17), two sets of one side outer wall that push rod (18) are close to each other is laminated with ejector pad (16) bottom left and right sides outer wall.
3. The injection mold of claim 1, wherein: left side dog (7) left side top outer wall has seted up guide way (12), it has stopper (13) to peg graft in guide way (12) inner chamber, be provided with supporting spring between stopper (13) right side outer wall and guide way (12) right side inner wall, stopper (13) bottom outer wall laminates with left side sleeve pipe (8) top outer wall mutually.
4. The injection mold of claim 2, wherein: the outer wall of the bottom of the push block (16) is fixedly connected with the supporting block (20), and the outer wall of the bottom of the supporting block (20) is attached to the inner wall of the bottom of the mounting groove (15).
5. The injection mold of claim 1, wherein: the outer wall of the lower die (1) is sleeved with a connecting ring (14), and the outer walls of the bottoms of the two groups of check blocks (7) are fixedly connected with the outer walls of the left side and the right side of the top of the connecting ring (14) respectively.
6. The injection mold of claim 1, wherein: the outer wall of the bottom of the model block (4) is fixedly connected with a moving block (9), moving grooves (11) are formed in the inner walls of the left side and the right side of the bottom of the groove (3), the bottom end of the moving block (9) is inserted into an inner cavity of the moving grooves (11), and a return spring (10) is arranged between the outer wall of the moving block (9) and the inner wall of the moving grooves (11).
7. The injection mold of claim 4, wherein: the outer wall of the push block (16) is connected with the inner wall of the mounting groove (15) in a sliding mode, and the push block (16) and the supporting block (20) are both counterweight steel blocks.
8. A demoulding method of an injection molding part mould with internal threads is characterized in that: the method comprises the following steps:
s1: placing an upper die (2) above a lower die (1), closing the die, and then injecting an injection molding raw material into a cavity of the die from a sprue of the upper die (2) to produce a product;
s2: after the product is cooled and formed, opening the mold, removing the upper mold (2) from the upper part of the lower mold (1), then pushing the limiting block (13) rightwards, pulling the stop block (7) downwards, removing the stop block (7) from the outer side of the mold block (4), resetting through the resetting spring (10), pulling the mold block (4) outwards by the moving block (9), enabling the mold block (4) not to be in contact with the product, and then collecting the product;
s3: also can push away push rod (18) to the inboard, make ejector pad (16) rebound, push away the product from the inner chamber of lower mould (1), collect the product, collect the back that finishes, promote model piece (4) to the inboard, upwards pass sleeve pipe (8) with dog (7) top again, through supporting spring expansion, make stopper (13) bottom and left side sleeve pipe (8) top contact, reset model piece (4), repeated operation, continue production after that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219775.3A CN111347625B (en) | 2020-03-25 | 2020-03-25 | Injection molding part mold with internal threads and demolding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219775.3A CN111347625B (en) | 2020-03-25 | 2020-03-25 | Injection molding part mold with internal threads and demolding method thereof |
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| Publication Number | Publication Date |
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| CN111347625A true CN111347625A (en) | 2020-06-30 |
| CN111347625B CN111347625B (en) | 2021-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844638A (en) * | 2020-07-16 | 2020-10-30 | 贾桂生 | Injection mold based on internal thread injection molding is used |
| CN112060553A (en) * | 2020-07-27 | 2020-12-11 | 晋西工业集团有限责任公司 | Compression mold for nonmetal parts with threads at two ends |
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| CN207747334U (en) * | 2018-01-03 | 2018-08-21 | 浙江海太塑业有限公司 | A kind of mold for inserting lid for making umbrella |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844638A (en) * | 2020-07-16 | 2020-10-30 | 贾桂生 | Injection mold based on internal thread injection molding is used |
| CN112060553A (en) * | 2020-07-27 | 2020-12-11 | 晋西工业集团有限责任公司 | Compression mold for nonmetal parts with threads at two ends |
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| Publication number | Publication date |
|---|---|
| CN111347625B (en) | 2021-09-28 |
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