CN116749458B - Injection mold for plastic housing processing convenient to drawing of patterns - Google Patents
Injection mold for plastic housing processing convenient to drawing of patterns Download PDFInfo
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- CN116749458B CN116749458B CN202311031205.1A CN202311031205A CN116749458B CN 116749458 B CN116749458 B CN 116749458B CN 202311031205 A CN202311031205 A CN 202311031205A CN 116749458 B CN116749458 B CN 116749458B
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- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 239000004033 plastic Substances 0.000 title claims abstract description 20
- 229920003023 plastic Polymers 0.000 title claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims description 36
- 230000007246 mechanism Effects 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 27
- 230000008569 process Effects 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 230000009471 action Effects 0.000 description 8
- 239000010720 hydraulic oil Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C45/382—Cutting-off equipment for sprues or ingates disposed outside the mould
-
- 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
-
- 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
- B29C45/4005—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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold for plastic shell processing, which is convenient for demolding, and particularly relates to the technical field of injection molds. According to the injection mold for processing the plastic shell, disclosed by the invention, in the process of operating the hydraulic cylinder, the second guide plate and the cutting knife can be pushed to move backwards by pushing the shell, so that the water gap material in the injection port is cut off, the operation of separating the water gap material from an injection finished product is completed, the purpose of removing the water gap material in the mold opening process is realized, the subsequent treatment time of the injection finished product is shortened, and the treatment efficiency is improved.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold convenient to demold for processing a plastic shell.
Background
Injection molding is a method for producing and shaping industrial products. Products are generally injection molded from rubber and plastics; injection molding is achieved by an injection molding machine and a mold together;
the injection mold consists of a movable mold and a fixed mold, wherein the movable mold and the fixed mold are closed to form a pouring system and a cavity during injection molding, and the movable mold and the fixed mold are separated during mold opening so as to take out plastic products.
Chinese patent document CN215434853U discloses an injection mold for plastic processing that facilitates demolding, comprising a support; a mold member mounted on the support member for injection molding; the driving piece is arranged on the supporting piece and connected with the die piece and is used for driving the die piece to open and close; and the demolding piece is arranged on the mold piece, and can slide on the mold piece in and out when the mold piece is opened along with the driving piece. The demolding piece is arranged on the mold piece, and works when the mold is opened, so that a molded product is automatically ejected out, the labor intensity during demolding is reduced, the demolding efficiency is improved, and the demolding device is more efficient and practical; however, the following drawbacks remain in the implementation:
after injection molding, a runner outside a molding cavity of the product or an injection molding opening can form a water gap material, and the related structure of the water gap material is lacking in the patent literature, so that the subsequent treatment flow and treatment time for the injection molded product can be increased after demolding, and the working efficiency is reduced.
Disclosure of Invention
The invention mainly aims to provide an injection mold for processing a plastic shell, which is convenient for demolding, and can effectively solve the problems that the processing flow and the processing time of a subsequent injection finished product are increased and the working efficiency is reduced after demolding due to the lack of a related structure of a water removing port material.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the injection mold comprises two first support plates, two first guide rods, a second fixing plate and a hydraulic cylinder, wherein the first guide rods are respectively arranged at the upper parts of the inner surfaces of the first support plates on the same side, the second fixing plate is fixed at the upper parts of the front sides between the opposite surfaces of the first two support plates, and the hydraulic cylinder is fixed at the middle part of the rear end of the second fixing plate;
the rear end of a piston rod of the hydraulic cylinder is provided with a concave push plate, two outer surfaces of the guide rods are respectively provided with an adjusting unit in a sliding mode, the middle parts of the adjusting units are jointly provided with a movable die, the rear parts of the guide rods are respectively provided with a connecting plate, the opposite surfaces of the connecting plates are jointly provided with a fixed die, the rear ends of the concave push plate are respectively connected with the adjusting units on the same side and enable the movable die to be connected with the fixed die to complete die assembly under the operation of the hydraulic cylinder, and the rear parts of the upper end and the rear parts of the lower end of the outer part of the guide rods are respectively provided with an L-shaped supporting plate for supporting the adjusting units.
Preferably, a first limiting cavity is formed in the upper portion of the rear end of the movable die, a cutting knife is slidably arranged in the first inner cavity of the limiting cavity, a second guide plate penetrating through the middle portion of the rear side wall of the first inner surface of the limiting cavity and extending to the front portion is arranged in the middle of the front end of the cutting knife, a second spring is jointly arranged between the left portion and the right portion of the front end of the second spring and the rear side wall of the first inner cavity of the limiting cavity, a first die cavity is formed in the middle of the front end of the movable die, and injection molding semicircular holes which are respectively communicated with the first limiting cavity and the first inner cavity of the die cavity are formed in the middle of the upper end of the first limiting cavity.
Preferably, the two adjusting units comprise a first guide plate sliding on the outer surface of the guide rod on the same side, the movable mould is arranged between the opposite surfaces of the two guide plates, a first vertical plate is arranged on one side, close to the first guide rod on the same side, of the rear part of the upper end of the guide plate and the rear part of the lower end of the guide plate, a reverse unit is arranged on the middle part of the upper end of the guide plate and the middle part of the lower end of the guide plate, and a guide unit is arranged on one side, close to the movable mould, of the upper end of the guide plate and the lower end of the guide plate.
Preferably, the guide unit comprises a sliding rail fixed on one side of the first guide plate, which is far away from the first guide rod, a sliding block slides on the outer surface of the sliding rail, a vertical plate II is arranged in the middle of one end of the sliding block, which is far away from the first guide rod, and a spring I is arranged at the rear end of the sliding block and on one side of the sliding rail, which is far away from the same side adjusting unit.
Preferably, the reversing unit comprises a U-shaped pipe fixed at the upper end of the horizontal part of the L-shaped supporting plate on the same side, a hydraulic medium is filled in the inner cavity of the U-shaped pipe, driving rods which penetrate through the rear end of the second same-side vertical plate and the rear end of the first same-side vertical plate to the front part respectively are arranged on the left part of the inner cavity of the U-shaped pipe and the right part of the inner cavity of the U-shaped pipe, and round blocking blocks are respectively arranged in the middle of the outer surfaces of the two driving rods.
Preferably, the rear part of the upper end of the concave push plate is provided with a first fixing plate, the upper end of the first fixing plate is provided with a pushing shell for driving the second guide plate to move, the upper end of the pushing shell is provided with an L-shaped plate, and the upper end of the horizontal part of the L-shaped plate is provided with a first concave plate.
Preferably, the upper end and the rear end of the fixed die are jointly provided with a toggle mechanism matched with the concave plate I, the front end of the fixed die is provided with a die cavity II matched with the die cavity I, the die cavity II is symmetrically provided with a limiting groove communicated with the rear end, the middle part of the upper side of the front end of the fixed die is provided with a limiting cavity II, and the middle part of the front side of the upper end of the fixed die is provided with an injection molding semicircular hole II communicated with the inner cavity of the limiting cavity II and the inner cavity of the die cavity II.
Preferably, the inner cavities of the two limiting grooves are both provided with pushing blocks in a sliding mode, and the rear ends of the two pushing blocks are both provided with limiting rods II which are used for limiting the moving distance of the pushing blocks in an up-down symmetry mode.
Preferably, the toggle mechanism comprises an L-shaped shell fixed at the rear end of the fixed die, the front end of the vertical part of the L-shaped shell is communicated with the inner cavity of the limiting groove on the same side, the horizontal parts of the inner cavities of the two L-shaped shells are jointly provided with a concave guide plate matched with the concave plate I in use, the rear ends of the two L-shaped shells are respectively provided with a reset mechanism for driving the pushing blocks on the same side to move, and the inner cavities of the two L-shaped shells are filled with hydraulic medium.
Preferably, the reset mechanism comprises a second guide rod extending to the inner cavity of the L-shaped shell and penetrating through the middle part of the rear end of the vertical part of the L-shaped shell at the same side, the front end of the second guide rod is fixedly connected with the middle part of the rear end of the pushing block at the same side, a first pushing plate is arranged at the rear end of the second guide rod, a first limit rod used for limiting the moving distance of the pushing block is arranged at the front end of the first pushing plate in an up-down symmetrical mode, and a third spring sleeved on the outer surface of the guide rod is arranged between the reset mechanism and the opposite surface of the first pushing plate.
Compared with the prior art, the invention has the following beneficial effects:
in the invention, in the process of operating the hydraulic cylinder, the second guide plate and the cutting knife can be pushed to move backwards by pushing the shell, when the cutting knife moves from the first inner cavity of the limiting cavity to the second inner cavity of the limiting cavity, the water gap material in the injection molding port formed by the injection molding semicircular hole II and the injection molding semicircular hole I can be cut off, the operation of separating the water gap material from an injection molding finished product is completed, and then, the movable die is enabled to move forwards and be separated from the fixed die by continuously operating the hydraulic cylinder, so that the purpose of removing the water gap material in the process of opening the die is realized, the subsequent processing time of the injection molding finished product is reduced, and the processing efficiency is improved.
According to the invention, in the process of backward movement of the concave push plate, the concave guide plate is driven to synchronously move backward by the concave plate I, so that hydraulic oil in the inner cavities of the two L-shaped shells is respectively pushed to move in the vertical direction, the two push blocks are extruded to the inner cavities of the die cavity II, in the process of die opening, the two push blocks move to the inner cavities of the die cavity II, the injection molding finished product in the inner cavities of the die cavity II can be pushed forward, the injection molding finished product is separated from the inner cavities of the die cavity II and falls off, the purpose of pushing out the injection molding finished product in the process of die opening under the operation of the hydraulic cylinder is realized, and the die release efficiency and the productivity are improved.
According to the invention, the concave push plate is driven to operate by the hydraulic cylinder, and under the interaction of the reversing unit, the pushing shell, the second guide plate, the first concave plate and the toggle mechanism, the processes of water removal, mold opening and demolding can be completed in the unidirectional operation stroke of the hydraulic cylinder, so that the concentration degree is high, the number of power sources is reduced, and the injection molding cost is saved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of another view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of the whole structure of the adjusting unit of the present invention;
FIG. 4 is an enlarged schematic view of FIG. 3A in accordance with the present invention;
FIG. 5 is a schematic view showing the overall structure of the reversing unit and the guiding unit of the present invention;
FIG. 6 is a schematic view of the detailed structure of the concave push plate of the present invention;
FIG. 7 is a schematic view of the connection structure of the fixed mold and the toggle mechanism of the present invention;
FIG. 8 is a schematic view of a partial cross-sectional structure of a stationary mold according to the present invention;
FIG. 9 is a schematic diagram of a detailed structure of a stationary mold according to the present invention;
FIG. 10 is a schematic view of the overall structure of the toggle mechanism of the present invention with a partial explosion effect;
FIG. 11 is a partial schematic view of the operational state of the present invention;
FIG. 12 is an enlarged schematic view of FIG. 11B in accordance with the present invention;
FIG. 13 is a schematic view of FIG. 11C in accordance with the present invention;
fig. 14 is a schematic view of fig. 11D according to the present invention.
In the figure: 1. a first supporting plate; 2. a first guide rod; 3. a second fixing plate; 4. a hydraulic cylinder; 5. a concave push plate; 51. a first fixing plate; 52. pushing the shell; 53. an L-shaped plate; 54. concave plate I; 6. an adjusting unit; 61. a first guide plate; 62. a reversing unit; 621. a U-shaped tube; 622. a driving rod; 623. a circular block; 63. a guide unit; 631. a slide rail; 632. a slide block; 633. a first spring; 634. a second vertical plate; 64. a first vertical plate; 7. an L-shaped support plate; 8. a movable mold; 81. a first limiting cavity; 82. a cutting blade; 83. a second spring; 84. a second guide plate; 85. injection molding of a semicircular hole I; 86. a first die cavity; 9. a fixed mold; 91. a second die cavity; 92. a toggle mechanism; 921. an L-shaped housing; 922. concave guide plates; 924. a reset mechanism; 9241. a pushing plate I; 9242. a first limit rod; 9243. a second guide rod; 9244. a third spring; 93. a second limiting cavity; 94. a limit groove; 941. a pushing block; 942. a second limiting rod; 95. injection molding of a semicircular hole II; 10. and (5) connecting a plate.
Description of the embodiments
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Examples
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an injection mold for plastic housing processing convenient for demolding comprises two support plates 1, two guide rods 2, a fixed plate 3 and a hydraulic cylinder 4, wherein the two guide rods 2 are respectively arranged at the upper parts of the inner surfaces of the support plates 1 on the same side, the fixed plate 3 is fixed at the upper parts of the front sides between the opposite surfaces of the two support plates 1, the hydraulic cylinder 4 is fixed at the middle part of the rear end of the fixed plate 3, connecting plates 10 are respectively arranged at the rear parts between the opposite surfaces of the two guide rods 2, and fixed molds 9 are jointly arranged between the opposite surfaces of the two connecting plates 10;
as is basically apparent from the above description, the two support plates 1, the fixing plate 3, the fixed die 9 and the connecting plate 10 can basically form an installation and bearing frame, and ensure the stability of the whole device during operation.
Specifically, in order to achieve the purpose of quick demolding after injection molding is completed, referring to fig. 1 and 2, in this embodiment, a concave push plate 5 is disposed at the rear end of a piston rod of a hydraulic cylinder 4, two guide rods 2 are provided with adjusting units 6 in a sliding manner, a movable mold 8 is disposed in the middle of each of the two adjusting units 6, the rear ends of the two concave push plates 5 are respectively connected with the adjusting units 6 on the same side and enable the movable mold 8 to be connected with a fixed mold 9 to complete mold assembly under the operation of the hydraulic cylinder 4, and an L-shaped supporting plate 7 for supporting the adjusting units 6 is disposed at the rear part of the upper end and the rear part of the lower end of the outer part of the guide rod 2.
As can be seen from the above, by operating the hydraulic cylinder 4, the concave push plate 5 can be driven to simultaneously push the two adjusting units 6 to move backward, under the steering action of the reversing unit 62, the movable mold 8 is moved forward, so that the movable mold 8 and the fixed mold 9 are separated, the mold opening operation is completed, before the mold opening operation is completed through the movement of the concave push plate 5, the first fixed plate 51 drives the second guide plate 84 to move, the water gap removing step is completed, then the concave push plate 5 continues to move, the toggle mechanism 92 is driven to operate through the first concave plate 54, and then the product injection molded in the mold cavity formed by the second mold cavity 91 and the first mold cavity 86 is pushed out, so as to realize the automatic mold releasing operation.
Specifically, in order to achieve the above-mentioned purpose of opening and closing the mold by controlling the operation state of the hydraulic cylinder 4, referring to fig. 3 and 5, in this embodiment, the two adjusting units 6 each include a first guide plate 61 sliding on the outer surface of the first guide rod 2 on the same side, the movable mold 8 is disposed between opposite surfaces of the first guide plates 61, one sides of the upper end rear portion and the lower end rear portion of the first guide plate 61, which are close to the first guide rod 2 on the same side, are respectively provided with a first vertical plate 64, the middle portions of the upper ends and the middle portions of the lower ends of the first guide plates 61 are respectively provided with a reverse unit 62, and one sides of the upper ends and the lower ends of the first guide plates 61, which are close to the movable mold 8, are respectively provided with a guide unit 63.
Therefore, after the hydraulic cylinder 4 is opened, the concave push plate 5 can push the two guide plates 61 to slide backward on the outer surfaces of the guide rods 2 at the same side at the same time in the process of driving the concave push plate 5 to operate by the hydraulic cylinder 4, and the moving direction of the movable die 8 is changed into forward movement by adjusting the moving direction of the reversing unit 62 in the process, and the position of the fixed die 9 is kept unchanged all the time in the whole displacement process due to the fact that the fixed die 9 is mounted at the rear part between the opposite surfaces of the two guide rods 2 by the connecting plates 10 at the two sides of the fixed die 8, so that the die opening operation is realized.
Further, in order to accomplish the above-mentioned purpose that the displacement direction of the movable mold 8 and the concave push plate 5 is opposite during the operation of the hydraulic cylinder 4, referring to fig. 3 and 5, in this embodiment, the guiding unit 63 includes a sliding rail 631 fixed on one side of the guiding plate 61 away from the guiding rod 2, a sliding block 632 slides on the outer surface of the sliding rail 631, a vertical plate two 634 is disposed in the middle of one end of the sliding block 632 away from the guiding rod 2, and a first spring 633 is disposed at the rear end of the sliding block 632 and one side of the sliding rail 631 away from the ipsilateral adjusting unit 6.
Further, the reversing unit 62 includes a U-shaped tube 621 fixed at the upper end of the horizontal portion of the L-shaped supporting plate 7 on the same side, the inner cavity of the U-shaped tube 621 is filled with a hydraulic medium, driving rods 622 extending to the front portion through the rear end of the second plate 634 on the same side and the rear end of the first plate 64 on the same side are respectively arranged at the left portion and the right portion of the inner cavity of the U-shaped tube 621, and circular blocking blocks 623 are respectively arranged at the middle portions of the outer surfaces of the two driving rods 622.
From the above, in combination with the prior art, the hydraulic medium filled in the inner cavity of the U-shaped pipe 621 adopts hydraulic oil in the present embodiment, which can play roles of heat conduction, moistening and power transmission.
Further, a second die cavity 91 matched with the first die cavity 86 is formed at the front end of the fixed die 9;
when the hydraulic cylinder 4 is in an initial state, the movable mold 8 and the fixed mold 9 are attached together under the action of the elasticity of the four springs one 633 and are in a mold closing state, at the moment, the rear ends of the upright plate two 634 and the upright plate one 64 on the same side are respectively attached to the front ends of the circular blocking blocks 623 on the same side, and liquid plastic is filled into the inner cavity of the mold cavity formed by the inner cavities of the mold cavity one 86 and the mold cavity two 91 through an injection molding opening formed by the injection molding semicircular hole two 95 and the injection molding semicircular hole one 85;
after the liquid plastic is cooled and molded, the concave push plate 5 moves backwards synchronously by operating the hydraulic cylinder 4, meanwhile, the four vertical plates 64 push the circular blocking blocks 623 on the same side to move backwards, under the steering action of the four U-shaped pipes 621, the backward thrust of the concave push plate 5 is converted into forward moving thrust, at the moment, the driving rods 622 on the same side with the four vertical plates 634 push the sliding blocks 632 to move forwards through the circular blocking blocks 623 respectively, and then the four sliding blocks 632 push the movable die 8 to move forwards together, so that the movable die 8 and the fixed die 9 are separated to realize die opening operation.
Examples
The embodiment optimizes the mold opening process based on the first embodiment, and achieves the aim of separating the nozzle material from the injection molding finished product in the mold opening process.
Specifically, in order to accomplish the above purpose of removing the nozzle material, referring to fig. 4, 6 and 8, in this embodiment, a first fixing plate 51 is disposed at the rear of the upper end of the concave push plate 5, and a pushing shell 52 for driving the second guide plate 84 to move is disposed at the upper end of the first fixing plate 51;
further, referring to fig. 4, in the embodiment, a first limiting cavity 81 is formed at the upper portion of the rear end of the movable mold 8, a cutting knife 82 is slidably disposed in the inner cavity of the first limiting cavity 81, a second guide plate 84 extending to the front portion from the middle portion of the rear side wall of the inner surface of the first limiting cavity 81 is disposed in the middle portion of the front end of the cutting knife 82, a second spring 83 is disposed between the left portion and the right portion of the front end of the second spring 83 and the rear side wall of the inner cavity of the first limiting cavity 81, a first mold cavity 86 is formed in the middle portion of the front end of the movable mold 8, and a first injection molding semicircular hole 85 is formed in the middle portion of the upper end of the first limiting cavity 81 and is respectively communicated with the inner cavities of the first limiting cavity 81 and the first mold cavity 86.
Further, referring to fig. 8, in this embodiment, a second limiting cavity 93 is provided in the middle of the upper side of the front end of the fixed mold 9, and a second injection molding semicircular hole 95 is provided in the middle of the front side of the upper end of the fixed mold 9, which is communicated with the inner cavity of the second limiting cavity 93 and the inner cavity of the second mold cavity 91.
In the process of the operation of the hydraulic cylinder 4, the pushing shell 52 can be driven to synchronously operate, in the process, the inner cavity of the pushing shell 52 is connected with the front part of the outer surface of the second guide plate 84, the second guide plate 84 and the cutting knife 82 are pushed to move backwards under the action of continuous backward movement of the pushing shell 52, in the moving process, the second springs 83 are lengthened, tension is accumulated, in the process that the cutting knife 82 moves from the inner cavity of the first limiting cavity 81 to the inner cavity of the second limiting cavity 93, the water gap material in an injection port formed by the injection semicircular hole II 95 and the injection semicircular hole I85 can be cut off, the operation of separating the water gap material from an injection finished product is completed, then the movable die 8 is moved forwards and separated from the fixed die 9 through the continuous operation of the hydraulic cylinder 4, the purpose of removing the water gap material in the die opening process is achieved, the subsequent processing time of the injection finished product is shortened, and the processing efficiency is improved;
when the hydraulic cylinder 4 runs reversely, the concave push plate 5 drags the push shell 52 to synchronously move forwards, the cutting knife 82 returns to the inner cavity of the first limiting cavity 81 again under the stretching action of the second spring 83, the movable die 8 and the fixed die 9 are clamped again, and the initial position is restored to be ready for the next continuous injection molding production product.
Examples
The second embodiment optimizes the mold opening process again on the basis of the second embodiment, and achieves the purpose that the molded injection molding product can be automatically pulled out after the water gap material is removed in the mold opening process.
Specifically, in order to accomplish the above-mentioned purpose of automatically pulling out the injection molding product, referring to fig. 8, 9 and 10, in this embodiment, an L-shaped plate 53 is provided at the upper end of the pushing shell 52, and a concave plate 54 is provided at the upper end of the horizontal portion of the L-shaped plate 53; the upper end and the rear end of the fixed die 9 are jointly provided with a toggle mechanism 92 matched with the concave plate one 54 for use.
Therefore, the hydraulic cylinder 4 drives the concave push plate 5 to synchronously move backwards in the running process, after the water gap material is removed by the cutting knife 82, the concave push plate 5 continues to move backwards, at this time, under the action of the L-shaped plate 53, the time point when the concave plate I54 is connected with the toggle mechanism 92 and the time point when the pushing shell 52 is connected with the second guide plate 84 can be staggered, the water gap material removing operation can be finished first, the mold opening operation is finished later, and finally the injection molding finished product pulling operation which is automatically finished.
Specifically, in order to achieve the purpose of pushing out the injection molded product by the push block 941, referring to fig. 8, 9 and 10, in this embodiment, the toggle mechanism 92 includes an L-shaped housing 921 fixed at the rear end of the fixed mold 9, the front end of the vertical portion of the L-shaped housing 921 is communicated with the inner cavity of the same-side limiting groove 94, the horizontal portions of the inner cavities of the two L-shaped housings 921 are jointly provided with a concave guide plate 922 used in cooperation with the concave plate 54, the rear ends of the two L-shaped housings 921 are respectively provided with a reset mechanism 924 for driving the same-side push block 941 to move, and the inner cavities of the two L-shaped housings 921 are filled with hydraulic medium.
Further, referring to fig. 10, in the present embodiment, the inner cavity of the second cavity 91 is symmetrically provided with limiting grooves 94 communicated with the rear end, and the inner cavities of the two limiting grooves 94 are both sliding with push blocks 941;
from the above, in combination with the prior art, the hydraulic medium canned in the inner cavities of the two L-shaped housings 921 uses hydraulic oil in this embodiment;
because L-shaped shell 921 is L-shaped, so in the use, through concave deflector 922 backward movement and under the effect of hydraulic oil, turn the horizontal driving force into the driving force of vertical direction, then at the driving force of converting into the horizontal direction, the synchronous backward movement of in-process drive concave deflector 922 of concave push pedal 5 backward movement, and then promote the hydraulic oil of two L-shaped shell 921 inner chamber to vertical direction removal respectively, extrude two ejector pads 941, in the in-process of opening the mould, through the effect that two ejector pads 941 moved to the inner chamber of die cavity two 91, can push out the finished product of moulding plastics of die cavity two 91 inner chamber forward, make the finished product of moulding plastics separate with the inner chamber of die cavity two 91, drop, realize in the operation of pneumatic cylinder 4 drive concave push pedal 5's in-process, with the purpose of ejecting the finished product of moulding plastics.
Specifically, in order to push out the injection molded product from the push block 941 and then return the push block 941 to the initial position, referring to fig. 14, in this embodiment, the return mechanism 924 includes a second guide rod 9243 extending to the inner cavity of the L-shaped housing 921 through the middle part of the rear end of the vertical portion of the L-shaped housing 921 on the same side, the front end of the second guide rod 9243 is fixedly connected with the middle part of the rear end of the push block 941 on the same side, a first push plate 9241 is disposed at the rear end of the second guide rod 9243, and a third spring 9244 sleeved on the outer surface of the second guide rod 9243 is disposed between the return mechanism 924 and the opposite surface of the first push plate 9241.
When the piston rod of the hydraulic cylinder 4 moves forwards, the concave push plate 5 is pulled to synchronously move forwards, then the push block 941 is pulled to move backwards through the guide rod II 9243 under the action of the spring III 9244, part of hydraulic oil in the vertical portion of the inner cavity of the L-shaped shell 921 is extruded to the inner cavity of the horizontal portion of the L-shaped shell 921, the concave guide plate 922 is pushed forwards to restore to the initial position, and the movable die 8 and the fixed die 9 are clamped again for the next continuous use.
Further, the rear ends of the two push blocks 941 are provided with a second limit rod 942 for limiting the moving distance of the push block 941 in an up-down symmetry manner, and the front end of the first push plate 9241 is provided with a first limit rod 9242 for limiting the moving distance of the push block 941 in an up-down symmetry manner;
in order to ensure the tightness of the device in the process of extruding the injection molding finished product and the integrity and yield of the injection molding product after the push block 941 is restored to the initial position, in this embodiment, the distance that the push block 941 moves to the cavity of the second cavity 91 can be limited by the first two limit rods 9242, so that hydraulic oil is prevented from entering the cavity of the second cavity 91;
in the process of pulling the push block 941 back to the initial position through the spring III 9244 and the guide rod II 9243, under the action of the limiting rod II 942, the distance between the rear end of the push block 941 and the front side wall of the vertical portion of the inner cavity of the L-shaped shell 921 can be limited, and then the inner surface of the push block 941 and the inner cavity of the die cavity II 91 can form a complete die cavity again, so that the integrity of an injection molding product is ensured, the probability of defective products is reduced, and the yield is improved.
It should be noted that, the specific installation manner of the hydraulic cylinder 4 and the connection manner of the oil path and the control method adopted in the first embodiment are all conventional designs, and are not described in detail in the present invention.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. Injection mold for plastic housing processing convenient to drawing of patterns, including two backup pad one (1), two guide bar one (2), fixed plate two (3) and pneumatic cylinder (4), its characterized in that: the two first guide rods (2) are respectively arranged at the upper parts of the inner surfaces of the first support plates (1) at the same side, the second fixing plate (3) is fixed at the upper parts of the front sides between the opposite surfaces of the first support plates (1), and the hydraulic cylinder (4) is fixed at the middle part of the rear end of the second fixing plate (3);
the rear end of a piston rod of the hydraulic cylinder (4) is provided with a concave push plate (5), the outer surfaces of the guide rods I (2) are respectively provided with an adjusting unit (6) in a sliding mode, the middle parts of the two adjusting units (6) are jointly provided with a movable die (8), the rear parts between the opposite surfaces of the guide rods I (2) are respectively provided with a connecting plate (10), the opposite surfaces of the two connecting plates (10) are jointly provided with a fixed die (9), the rear ends of the two concave push plates (5) are respectively connected with the adjusting units (6) on the same side, the movable die (8) and the fixed die (9) are connected under the operation of the hydraulic cylinder (4) to complete die assembly, and the rear parts of the outer upper end and the lower end of the guide rods I (2) are respectively provided with an L-shaped supporting plate (7) for supporting the adjusting units (6);
a first limiting cavity (81) is formed in the upper portion of the rear end of the movable die (8), a cutting knife (82) is slidably arranged in the inner cavity of the first limiting cavity (81), and a second guide plate (84) penetrating through the middle portion of the rear side wall of the inner surface of the first limiting cavity (81) and extending to the front portion is arranged in the middle of the front end of the cutting knife (82);
the rear part of the upper end of the concave push plate (5) is provided with a first fixed plate (51), the upper end of the first fixed plate (51) is provided with a pushing shell (52) for driving a second guide plate (84) to move, the upper end of the pushing shell (52) is provided with an L-shaped plate (53), and the upper end of the horizontal part of the L-shaped plate (53) is provided with a first concave plate (54);
the upper end and the rear end of the fixed die (9) are jointly provided with a toggle mechanism (92) matched with the concave plate I (54), the front end of the fixed die (9) is provided with a die cavity II (91) matched with the die cavity I (86), the inner cavity of the die cavity II (91) is symmetrically provided with a limit groove (94) communicated with the rear end, the middle part of the upper side of the front end of the fixed die (9) is provided with a limit cavity II (93), and the middle part of the front side of the upper end of the fixed die (9) is provided with an injection molding semicircular hole II (95) communicated with the inner cavity of the limit cavity II (93) and the inner cavity of the die cavity II (91);
the inner cavities of the two limiting grooves (94) are respectively provided with a push block (941) in a sliding mode, and the rear ends of the two push blocks (941) are respectively provided with a limiting rod II (942) which is used for limiting the moving distance of the push blocks (941) in an up-down symmetrical mode;
the stirring mechanism (92) comprises an L-shaped shell (921) fixed at the rear end of the fixed die (9), the front end of the vertical part of the L-shaped shell (921) is communicated with the inner cavity of the same-side limiting groove (94), the horizontal parts of the inner cavities of the two L-shaped shells (921) are jointly provided with a concave guide plate (922) matched with a concave plate I (54), the rear ends of the two L-shaped shells (921) are respectively provided with a reset mechanism (924) for driving the same-side push block (941) to move, and the inner cavities of the two L-shaped shells (921) are filled with hydraulic mediums;
the reset mechanism (924) comprises a guide rod II (9243) penetrating through the middle part of the rear end of the vertical part of the L-shaped shell (921) on the same side and extending to the inner cavity of the L-shaped shell (921), the front end of the guide rod II (9243) is fixedly connected with the middle part of the rear end of the pushing block (941) on the same side, a push plate I (9241) is arranged at the rear end of the guide rod II (9243), a limit rod I (9242) for limiting the moving distance of the pushing block (941) is arranged at the front end of the push plate I (9241) in an up-down symmetrical mode, and a spring III (9244) sleeved on the outer surface of the guide rod II (9243) is jointly arranged between the opposite surfaces of the reset mechanism (924) and the push plate I (9241).
2. The injection mold for plastic housing processing with easy demolding according to claim 1, wherein: the spring II (83) is jointly arranged between the left part of the front end of the spring II (83) and the right part of the front end of the spring II and the rear side wall of the inner cavity of the first limiting cavity (81), the first die cavity (86) is arranged in the middle of the front end of the movable die (8), and the first injection molding semicircular hole (85) which is respectively communicated with the inner cavities of the first limiting cavity (81) and the first die cavity (86) is arranged in the middle of the upper end of the first limiting cavity (81).
3. The injection mold for plastic housing processing with easy demolding according to claim 2, wherein: the two adjusting units (6) comprise first guide plates (61) sliding on the outer surfaces of first guide rods (2) on the same side, the movable mould (8) is arranged between opposite surfaces of the first guide plates (61), one sides, close to the first guide rods (2) on the same side, of the rear parts of the upper ends and the rear parts of the lower ends of the first guide plates (61) are respectively provided with a first vertical plate (64), the middle parts of the upper ends and the middle parts of the lower ends of the first guide plates (61) are respectively provided with a reverse unit (62), and one sides, close to the movable mould (8), of the upper ends and the lower ends of the first guide plates (61) are respectively provided with a guide unit (63).
4. An injection mold for plastic housing processing for facilitating demolding according to claim 3, wherein: the guide unit (63) comprises a sliding rail (631) fixed on one side, far away from the guide rod I (2), of the guide plate I (61), a sliding block (632) is arranged on the outer surface of the sliding rail (631) in a sliding mode, a vertical plate II (634) is arranged in the middle of one end, far away from the guide rod I (2), of the sliding block (632), and a spring I (633) is arranged at the rear end of the sliding block (632) and on one side, far away from the same-side adjusting unit (6), of the sliding rail (631).
5. The injection mold for plastic housing processing with easy demolding as claimed in claim 4, wherein: the reversing unit (62) comprises a U-shaped tube (621) fixed at the upper end of the horizontal part of the L-shaped supporting plate (7) on the same side, hydraulic medium is filled in the inner cavity of the U-shaped tube (621), driving rods (622) penetrating through the rear end of the second same-side vertical plate (634) and the rear end of the first same-side vertical plate (64) to the front part respectively are arranged on the left part and the right part of the inner cavity of the U-shaped tube (621), and round blocking blocks (623) are arranged in the middle of the outer surface of each driving rod (622).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311031205.1A CN116749458B (en) | 2023-08-16 | 2023-08-16 | Injection mold for plastic housing processing convenient to drawing of patterns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311031205.1A CN116749458B (en) | 2023-08-16 | 2023-08-16 | Injection mold for plastic housing processing convenient to drawing of patterns |
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| CN116749458A CN116749458A (en) | 2023-09-15 |
| CN116749458B true CN116749458B (en) | 2023-12-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733904A (en) * | 2009-12-14 | 2010-06-16 | 北京东明兴业科技有限公司 | Automatic in-mould edge gate cutting injection mould |
| CN212097365U (en) * | 2020-04-14 | 2020-12-08 | 中山市兴达汽车配件有限公司 | Automobile injection mold with water gap automatically falling off |
| CN113306092A (en) * | 2021-06-25 | 2021-08-27 | 江西艾特传质科技有限公司 | Full-automatic forming die for machining pall ring |
| CN114770875A (en) * | 2022-06-23 | 2022-07-22 | 烟台精锐模具有限公司 | High-precision medical instrument part rapid forming die |
| CN116330583A (en) * | 2023-05-10 | 2023-06-27 | 李步国 | Injection mold is used in working of plastics production with clearance residue function |
-
2023
- 2023-08-16 CN CN202311031205.1A patent/CN116749458B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733904A (en) * | 2009-12-14 | 2010-06-16 | 北京东明兴业科技有限公司 | Automatic in-mould edge gate cutting injection mould |
| CN212097365U (en) * | 2020-04-14 | 2020-12-08 | 中山市兴达汽车配件有限公司 | Automobile injection mold with water gap automatically falling off |
| CN113306092A (en) * | 2021-06-25 | 2021-08-27 | 江西艾特传质科技有限公司 | Full-automatic forming die for machining pall ring |
| CN114770875A (en) * | 2022-06-23 | 2022-07-22 | 烟台精锐模具有限公司 | High-precision medical instrument part rapid forming die |
| CN116330583A (en) * | 2023-05-10 | 2023-06-27 | 李步国 | Injection mold is used in working of plastics production with clearance residue function |
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| Publication number | Publication date |
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| CN116749458A (en) | 2023-09-15 |
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