CN111907008B - Plastic mold - Google Patents
Plastic mold Download PDFInfo
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- CN111907008B CN111907008B CN202010774527.5A CN202010774527A CN111907008B CN 111907008 B CN111907008 B CN 111907008B CN 202010774527 A CN202010774527 A CN 202010774527A CN 111907008 B CN111907008 B CN 111907008B
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- mold base
- fixing
- base
- upper mold
- die holder
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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
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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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a plastic mould, which comprises an upper mould base and a lower mould base, wherein the upper mould base is positioned on one side of the lower mould base, the upper mould base consists of an upper mould base plate, an upper mould base and an upper mould core, the upper mould base plate is positioned on one side of the upper mould base, the upper mould core is embedded in the middle position of the outer surface of the other side of the upper mould base, main flow channels are respectively arranged in the middle positions of the outer surfaces of the upper mould base plate and one side of the upper mould base, the lower mould base consists of a lower mould base, a fixed plate and a lower mould base plate, the lower mould base is positioned on one side of the fixed plate, the lower mould base plate is positioned on the other side of the fixed plate, the plastic mould can cut off tailings after glue injection is finished, later-stage manual cutting is not needed, manpower is saved, the production efficiency is improved, ejector pins are used for uniformly pushing and demoulding the mould, the mould is high in demoulding speed, the mould is not easy to damage the mould, and the upper mould base and the lower mould base are connected more firmly, the upper die core and the lower die core are tightly attached, and the shaping quality of the model is guaranteed.
Description
Technical Field
The invention relates to the technical field of molds, in particular to a plastic mold.
Background
The plastic mould is a short for combined mould used for compression moulding, extrusion moulding, injection, blow moulding and low foaming forming, the coordination change of the mould convex and concave mould and the auxiliary forming system can process a series of plastic parts with different shapes and sizes, the plastic mould is the mother of industry, the release of new products can relate to plastics, and the plastic mould can be divided into: injection molding dies, blow molding dies, compression molding dies, transfer molding dies, extrusion molding dies, hot molding dies, rotational molding dies, and the like, and injection molding dies mainly have the following defects: 1. after the cement is fed, the tailings are not easy to remove, and the tailings need to be manually cut off after the model is shaped, so that the labor and the energy are wasted; 2. during demoulding, the ejector pins are stressed in a concentrated manner, so that the mould is easily damaged, and meanwhile, the mould is stressed unevenly, and the demoulding efficiency is low; 3. after the colloid is injected into the mold core, air in the mold core is extruded to generate air pressure, so that the upper mold base and the lower mold base are easy to displace, and the molding quality of the model is affected.
Disclosure of Invention
The invention aims to provide a plastic mould which can cut off tailings after glue injection is finished, manual later-stage cutting is not needed, manpower is saved, production efficiency is improved, ejector pins uniformly push a mould to be demoulded, demoulding speed is high, the mould is not easy to damage, upper and lower mould bases are connected more firmly, tight fit of the upper and lower mould cores is ensured, and shaping quality of the mould is guaranteed.
The invention provides a plastic mould, which comprises an upper mould base and a lower mould base, wherein the upper mould base is positioned on one side of the lower mould base, the upper mould base consists of an upper mould base plate, an upper mould base and an upper mould core, the upper mould base plate is positioned on one side of the upper mould base, the upper mould core is embedded in the middle position of the outer surface of the other side of the upper mould base, the middle positions of the outer surfaces of the upper mould base plate and one side of the upper mould base are respectively provided with a main runner, the lower mould base consists of a lower mould base, a fixed plate and a lower mould base plate, the lower mould base plate is positioned on one side of the fixed plate, the corner positions of the outer surface of one side of the lower mould base are respectively and fixedly provided with a positioning guide pillar, the middle position of the outer surface of one side of the lower mould base is provided with a lower mould core, the corner positions of the outer surface of one side of the fixed plate are respectively and fixedly provided with a guide rod, and the middle position of the outer surface of one side of the fixed plate is movably provided with a thimble, square irons are fixedly arranged at the front end and the rear end of the outer surface of one side of the lower die bottom plate;
the inner part of the upper die frame is provided with interlayer chutes at the periphery of the main runner, the front end and the rear end of the inner part of each interlayer chute are provided with cutting pieces in a sliding manner, a spring is fixedly arranged between each cutting piece and each interlayer chute, the two cutting pieces are spliced to form a disc shape, the diameter of the disc formed by splicing the cutting pieces is larger than that of the main runner, the outer surface of one side of each cutting piece is an arc-shaped surface, and the thickness of one end, close to the main runner, of each cutting piece is smaller than that of one end, far away from the main runner, of each cutting piece;
a groove is formed in one end, close to the main flow channel, of the outer surface of the other side of the cutting piece, a smoothing roller is movably mounted inside the groove, roller shafts are movably mounted between the outer surfaces of the upper end and the lower end of the smoothing roller and the groove, and the smoothing roller protrudes out of the surface of the groove.
Preferably, a fixed seat is fixedly arranged on the outer surface of one side of the fixed plate corresponding to the position of the thimble, a rotating shaft is movably arranged between the fixed seat and the thimble, one side of the outer surface of one end of the thimble close to the fixed plate is an arc-shaped surface, and a jacking hole is formed in the center of the lower die core.
After the model shaping, the upper die base separates with the lower die holder, the fashioned model carries out the drawing of patterns to the lower mould benevolence this moment, traditional drawing of patterns thimble all is the single-point atress, the model atress is uneven among the drawing of patterns process, influence drawing of patterns speed, cause the damage to the model simultaneously easily, through improving the thimble, make during the drawing of patterns thimble penetrate the inside and the model contact of ejection hole, can drive the thimble to expand all around after its arcwall face conflicts the model when thimble contacts with the model, the thimble takes place to rotate through pivot and fixing base this moment, cooperation round platform form ejection hole makes the better expansion of thimble, the thimble diffusion expandes the back, follow the ejection model of four peripheral angles department of model, make the model atress even, can better with quick drawing of patterns to the model, combine the rubber sleeve of thimble surface parcel simultaneously, make the drawing of patterns in-process model difficult impaired.
Preferably, the ejector pin penetrates through the inside of the ejection hole, the ejection hole is in a circular truncated cone shape, the diameter of one side of the ejection hole is larger than that of the other side of the ejection hole, and the outer surface of the ejector pin is wrapped by the rubber sleeve.
The ejector pin is better unfolded by matching with the round platform-shaped ejector hole, and after the ejector pin is spread and unfolded, the model is ejected from the four peripheral corners of the model, so that the stress on the model is uniform, the model can be better and quickly demoulded, and meanwhile, the rubber sleeve wrapped by the outer surface of the ejector pin is combined, so that the model is not easy to damage in the demoulding process.
Preferably, the equal movable mounting in both ends surface intermediate position has solid fixed ring around the upper die base, and movable mounting has the loose axle between solid fixed ring and the upper die base, gu fixed ring's internal surface is equipped with first tooth, the equal fixed mounting in both ends surface intermediate position has fixed the knot around the die holder, and the one end movable mounting who keeps away from the die holder of fixed knot has adjusting screw, the one end that the die holder was kept away from to adjusting screw's surface all around is equipped with the second tooth, and adjusting screw's surface rear end position seting up screw thread, the screw has all been seted up to the position that the both ends surface corresponds adjusting screw around the die holder.
When the mold is in operation, the upper mold base moves towards the lower mold base by using the positioning guide pillar and is closed with the lower mold base, so that the upper mold core and the lower mold core are aligned and closed, colloid is injected into a mold cavity formed by the upper mold core and the lower mold core through the main runner, air exists in the mold cavity formed after the upper mold core and the lower mold core are closed, air pressure is generated after the colloid is injected into the mold cavity, the air pressure pushes the upper mold base to separate the upper mold base from the lower mold base, so that the upper mold core and the lower mold core are staggered, the molding quality of a model is influenced, after the upper mold base and the lower mold base are closed, the fixing ring is clamped into the fixing buckle on the lower mold base by rotating the fixing ring clockwise ninety degrees through the movable shaft, the adjusting screw rod penetrates into the fixing buckle, the fixing ring and the screw hole, then the adjusting screw rod is rotated, and the adjusting screw rod is relatively fixed under the limitation of the fixing buckle and the screw hole, when adjusting screw rotates, the second rodent on its surface meshes with the first rodent of solid fixed ring internal surface mutually, along with adjusting screw's rotation, the first rodent of second rodent meshing will be fixed the hoop and be close to the pulling of die holder direction, make solid fixed ring with the upper die base to the pulling of die holder direction, it is inseparabler to make to connect between the upper die base and the die holder, simultaneously along with adjusting screw's rotation, the screw thread on its surface produces threaded connection with the screw, thereby fix adjusting screw, avoid turning round with the help of adjusting screw under the condition of external force, the stability of being connected between upper die base and the die holder has been ensured, make when pouring into the colloid, upper die base and die holder can not receive atmospheric pressure inflation and take place the displacement, the shaping quality of model has been ensured.
Preferably, the fixing ring can rotate ninety degrees through the movable shaft, the adjusting screw penetrates through the fixing buckle, the fixing ring and the screw hole, and the first engaging tooth and the second engaging tooth are meshed with each other.
Penetrate adjusting screw in fixed knot, solid fixed ring and the screw, then rotate adjusting screw, because adjusting screw receives the restriction formation relatively fixed of fixed knot and screw, when adjusting screw rotated, the second rodent on its surface meshed with the first rodent of solid fixed ring internal surface mutually, along with adjusting screw's rotation, the first rodent of second rodent meshing will be fixed the hoop and be close to the pulling of die holder direction for solid fixed ring stimulates the upper die base to the die holder direction, makes to be connected more closely between the upper die base die holder.
Preferably, the upper die base is connected with the lower die base through a positioning guide pillar, the number of the fixing plates is two, the fixing plate on one side is fixedly connected with the lower die frame through a guide rod, and the two fixing plates are movably connected through the guide rod.
The upper die base utilizes the positioning guide pillar to move to the lower die base direction to it is closed with the die holder, makes the alignment of upper die benevolence and lower mould benevolence closed, and the fixed plate that is close to die holder one side passes through the guide arm and adjusts the interval between two fixed plates, thereby the control top is to the model drawing of patterns.
Advantageous effects
1. When the injection molding machine works, the upper die base moves towards the lower die base by using the positioning guide pillar and is closed with the lower die base, so that the upper die core and the lower die core are aligned and closed, colloid is injected into a die cavity formed by the upper die core and the lower die core through the main runner, when the injection pipeline is inserted into the main runner, the injection pipeline is contacted with the cutting sheet, the cutting sheet is pushed by the injection pipeline along with the continuous insertion of the injection pipeline, the cutting sheet is extruded to the front end and the rear end through the arc surface of the cutting sheet, so that the cutting sheet is contracted into the interlayer sliding groove, the spring is compressed and deformed at the moment, the main runner is communicated with the upper die core, so that the colloid is injected into the die cavity formed by the upper die core and the lower die core, the injection pipeline is pulled out after the colloid is injected, the spring is reset to pop out the cutting sheet from the interlayer sliding groove, the main runner is closed by splicing and closing the two cutting sheets, the tailings are cut without manual cutting in later stage, the labor is saved, the production efficiency is improved, the smoothing roller on the surface of the cutting piece rotates through the roller shaft when the cutting piece is closed, the colloid in the die cavity is smoothed, the phenomena of protrusion or bubbling and the like of the colloid after the injection is finished are avoided, and the molding quality of the model is improved;
2. after the model is formed, the upper die base is separated from the lower die base, the model formed in the lower die core needs to be subjected to demolding treatment at the moment, the traditional demolding ejector pins are subjected to single-point stress, the stress of the model is uneven in the demolding process, the demolding speed is influenced, and meanwhile, the model is easy to damage;
3. when the mold is in operation, the upper mold base moves towards the lower mold base by using the positioning guide pillar and is closed with the lower mold base, so that the upper mold core and the lower mold core are aligned and closed, colloid is injected into a mold cavity formed by the upper mold core and the lower mold core through the main runner, air exists in the mold cavity formed after the upper mold core and the lower mold core are closed, air pressure is generated after the colloid is injected into the mold cavity, the air pressure pushes the upper mold base to separate the upper mold base from the lower mold base, so that the upper mold core and the lower mold core are staggered, the molding quality of a model is influenced, after the upper mold base and the lower mold base are closed, the fixing ring is clamped into the fixing buckle on the lower mold base by rotating the fixing ring clockwise ninety degrees through the movable shaft, the adjusting screw rod penetrates into the fixing buckle, the fixing ring and the screw hole, then the adjusting screw rod is rotated, and the adjusting screw rod is relatively fixed under the limitation of the fixing buckle and the screw hole, when adjusting screw rotates, the second rodent on its surface meshes with the first rodent of solid fixed ring internal surface mutually, along with adjusting screw's rotation, the first rodent of second rodent meshing will be fixed the hoop and be close to the pulling of die holder direction, make solid fixed ring with the upper die base to the pulling of die holder direction, it is inseparabler to make to connect between the upper die base and the die holder, simultaneously along with adjusting screw's rotation, the screw thread on its surface produces threaded connection with the screw, thereby fix adjusting screw, avoid turning round with the help of adjusting screw under the condition of external force, the stability of being connected between upper die base and the die holder has been ensured, make when pouring into the colloid, upper die base and die holder can not receive atmospheric pressure inflation and take place the displacement, the shaping quality of model has been ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a view of the upper mold frame of the present invention in combination with a cutting blade;
FIG. 3 is a schematic view of the cutting blade structure of the present invention;
FIG. 4 is a view of the present invention with the cutting blade in combination with a smoothing roller;
FIG. 5 is a view of the present invention showing the fixing plate and the thimble;
FIG. 6 is a view of the combination of the lower mold core and the ejection hole of the present invention;
FIG. 7 is an assembled view of the present invention;
fig. 8 is a schematic view of an adjusting screw structure of the present invention.
Description of reference numerals:
1. an upper die holder; 101. a fixing ring; 102. a movable shaft; 103. a first rodent; 104. a fixing buckle; 105. adjusting the screw rod; 106. a second rodent; 107. a thread; 2. a lower die holder; 3. an upper die base plate; 4. feeding a mold frame; 41. an interlayer chute; 42. cutting the sheet; 43. a spring; 421. a groove; 422. smoothing rollers; 423. a roll shaft; 5. an upper die core; 6. a main flow channel; 7. a lower die frame; 8. a fixing plate; 81. a fixed seat; 82. a rotating shaft; 83. an ejection aperture; 9. a lower die base plate; 10. positioning the guide post; 11. a lower die core; 12. a guide bar; 13. a thimble; 14. and (4) square iron.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 8, the present invention provides a technical solution:
a plastic mold comprises an upper mold base 1 and a lower mold base 2, the upper mold base 1 is arranged on one side of the lower mold base 2, the upper mold base 1 is composed of an upper mold base plate 3, an upper mold frame 4 and an upper mold core 5, the upper mold base plate 3 is arranged on one side of the upper mold frame 4, the upper mold core 5 is embedded in the middle of the outer surface of the other side of the upper mold frame 4, main runners 6 are respectively arranged in the middle of the outer surfaces of one sides of the upper mold base plate 3 and the upper mold frame 4, the lower mold base 2 is composed of a lower mold frame 7, a fixing plate 8 and a lower mold base plate 9, the lower mold frame 7 is arranged on one side of the fixing plate 8, the lower mold base plate 9 is arranged on the other side of the fixing plate 8, positioning guide posts 10 are fixedly arranged at the corners of the outer surface of one side of the lower mold frame 7, a lower mold core 11 is arranged at the middle of the outer surface of one side of the lower mold frame 7, guide rods 12 are fixedly arranged at the corners of the outer surface of one side of the fixing plate 8, a thimble 13 is movably mounted in the middle of the outer surface of one side of the fixing plate 8, and square irons 14 are fixedly mounted at the front end and the rear end of the outer surface of one side of the lower die base plate 9;
a groove 421 is formed in one end, close to the main flow channel 6, of the outer surface of the other side of the cutting blade 42, a smoothing roller 422 is movably mounted inside the groove 421, roller shafts 423 are movably mounted between the outer surfaces of the upper end and the lower end of the smoothing roller 422 and the groove 421, and the smoothing roller 422 protrudes out of the surface of the groove 421;
by adopting the technical scheme, when the injection molding machine works, the upper die holder 1 moves towards the lower die holder 2 by utilizing the positioning guide pillar 10 and is closed with the lower die holder 2, so that the upper die core 5 is aligned with the lower die core 11 for closing, colloid is injected into a die cavity formed by the upper die core 5 and the lower die core 11 through the main runner 6, when the injection pipeline is inserted into the main runner 6, the injection pipeline is contacted with the cutting piece 42, along with the continuous insertion of the injection pipeline, the injection pipeline pushes the cutting piece 42, the cutting piece 42 is extruded to the front end and the rear end through the arc-shaped surface of the cutting piece 42, so that the cutting piece 42 is contracted into the interlayer sliding groove 41, at the moment, the spring 43 is compressed and deformed, the main runner 6 is communicated with the upper die core 5, so that the colloid is injected into the die cavity formed by the upper die core 5 and the lower die core 11, the injection pipeline is pulled out after the colloid is injected, at the moment, the spring 43 resets and ejects the cutting piece 42 from the interlayer sliding groove 41, close to sprue 6 through two cutting blade 42 concatenation closures, excise the tails when cutting blade 42 is closed, need not the artifical excision in later stage, saved the manpower and improved production efficiency, smoothing roller 422 on its surface rotates through roller 423 when cutting blade 42 is closed, smooths the colloid in the die cavity, and there is phenomenons such as arch or foaming in the colloid when avoiding injecting the end, has improved the shaping quality of model.
As an embodiment of the present invention, as shown in fig. 5 and 6, a fixed seat 81 is fixedly installed on an outer surface of one side of the fixed plate 8 at a position corresponding to the thimble 13, a rotating shaft 82 is movably installed between the fixed seat 81 and the thimble 13, one side of the outer surface of one end of the thimble 13 close to the fixed plate 8 is an arc-shaped surface, a center of the lower mold core 11 is provided with an ejection hole 83, the thimble 13 penetrates through the inside of the ejection hole 83, the ejection hole 83 is in a circular truncated cone shape, a diameter of one side of the ejection hole 83 is larger than a diameter of the other side of the ejection hole, the outer surface of the thimble 13 is wrapped with a rubber sleeve, after a mold is formed, the upper mold base 1 is separated from the lower mold base 2, at this time, the mold formed in the lower mold core 11 needs to be subjected to a mold release treatment, the traditional ejector thimble 13 is subjected to a force, and is subjected to a non-uniform force in a single point in a mold release process, thereby affecting a mold release speed, and easily damaging the mold, through improving thimble 13, thimble 13 penetrates the inside and the model contact of ejection hole 83 during the drawing of patterns, thimble 13 can drive thimble 13 to expand all around after its arcwall face contradicts the model when thimble 13 contacts with the model, thimble 13 takes place to rotate through pivot 82 and fixing base 81 this moment, cooperation round platform form ejection hole 83 makes the better expansion of thimble 13, thimble 13 diffusion expandes the back, follow the ejecting model of the four peripheral angle departments of model, make the model atress even, can better with quick drawing of patterns to the model, combine the rubber sleeve of 13 surface parcels of thimble simultaneously, make the difficult impaired of drawing of patterns in-process model.
As an embodiment of the present invention, as shown in fig. 7 to 8, fixing rings 101 are movably installed at the middle positions of the outer surfaces of the front and rear ends of the upper die holder 1, a movable shaft 102 is movably installed between the fixing rings 101 and the upper die holder 1, first engaging teeth 103 are disposed on the inner surfaces of the fixing rings 101, fixing buckles 104 are fixedly installed at the middle positions of the outer surfaces of the front and rear ends of the lower die holder 2, adjusting screws 105 are movably installed at one ends of the fixing buckles 104 far away from the lower die holder 2, second engaging teeth 106 are disposed at one ends of the peripheral outer surfaces of the adjusting screws 105 far away from the lower die holder 2, threads 107 are disposed at the rear ends of the outer surfaces of the adjusting screws 105, threaded holes are disposed at positions of the outer surfaces of the front and rear ends of the lower die holder 2 corresponding to the adjusting screws 105, the fixing rings 101 can rotate ninety degrees by the movable shaft 102, and the adjusting screws 105 penetrate through the fixing buckles 104, The first tooth round 103 and the second tooth round 106 are engaged with each other inside the fixing ring 101 and the screw hole, when the mold is operated, the upper mold base 1 moves towards the lower mold base 2 by using the positioning guide pillar 10 and is closed with the lower mold base 2, so that the upper mold core 5 and the lower mold core 11 are aligned and closed, at this time, colloid is injected into a mold cavity formed by the upper mold core 5 and the lower mold core 11 through the main runner 6, air is stored in the mold cavity formed after the upper mold core 5 and the lower mold core 11 are closed, air pressure is generated after the colloid is injected into the mold cavity, the air pressure pushes the upper mold base 1 at this time, so that the upper mold base 1 is separated from the lower mold base 2, the upper mold core 5 is dislocated from the lower mold core 11, and the molding quality of the mold is affected, therefore, after the upper mold base 1 and the lower mold base 2 are closed, the fixing ring 101 is rotated clockwise by ninety degrees through the movable shaft 102, so that the fixing ring 101 is clamped into the fixing buckle 104 on the lower mold base 2, then the adjusting screw 105 is inserted into the fixing buckle 104, the fixing ring 101 and the screw hole, then the adjusting screw 105 is rotated, because the adjusting screw 105 is limited by the fixing buckle 104 and the screw hole to form relative fixation, when the adjusting screw 105 rotates, the second tooth 106 on the surface thereof is meshed with the first tooth 103 on the inner surface of the fixing ring 101, and along with the rotation of the adjusting screw 105, the second tooth 106 is meshed with the first tooth 103 to pull the fixing ring 101 towards the lower die holder 2, so that the fixing ring 101 pulls the upper die holder 1 towards the lower die holder 2, so that the connection between the upper die holder 1 and the lower die holder 2 is tighter, and along with the rotation of the adjusting screw 105, the thread 107 on the surface thereof is in threaded connection with the screw hole, thereby fixing the adjusting screw 105, avoiding the rotation of the adjusting screw 105 without the help of external force, and ensuring the stability of the connection between the upper die holder 1 and the lower die holder 2, when the colloid is injected, the upper die base 1 and the lower die base 2 cannot be displaced due to air pressure expansion, and the molding quality of the model is guaranteed.
The working principle is as follows: when the mold is in operation, the upper mold base 1 moves towards the lower mold base 2 by using the positioning guide post 10 and is closed with the lower mold base 2, so that the upper mold core 5 and the lower mold core 11 are aligned and closed, at the moment, colloid is injected into a mold cavity formed by the upper mold core 5 and the lower mold core 11 through the main runner 6, air exists in the mold cavity formed after the upper mold core 5 and the lower mold core 11 are closed, when the colloid is injected into the mold cavity, air pressure is generated, at the moment, the upper mold base 1 is pushed by the air pressure, so that the upper mold base 1 is separated from the lower mold base 2, the upper mold core 5 and the lower mold core 11 are staggered, and the molding quality of a mold is affected, therefore, after the upper mold base 1 and the lower mold base 2 are closed, the fixing ring 101 is clamped into the fixing buckle 104 on the lower mold base 2 by clockwise ninety degrees through the movable shaft 102, then the adjusting screw 105 penetrates into the fixing buckle 104, the fixing ring 101 and the screw 105 is rotated, because the adjusting screw 105 is limited by the fixing buckle 104 and the screw hole to be relatively fixed, when the adjusting screw 105 rotates, the second tooth 106 on the surface of the adjusting screw is meshed with the first tooth 103 on the inner surface of the fixing ring 101, along with the rotation of the adjusting screw 105, the second tooth 106 is meshed with the first tooth 103 to pull the fixing ring 101 towards the direction close to the lower die holder 2, so that the fixing ring 101 pulls the upper die holder 1 towards the lower die holder 2, the connection between the upper die holder 1 and the lower die holder 2 is tighter, and simultaneously, along with the rotation of the adjusting screw 105, the thread 107 on the surface of the adjusting screw is in threaded connection with the screw hole, so that the adjusting screw 105 is fixed, the adjusting screw 105 is prevented from rotating under the condition without the help of external force, the stability of the connection between the upper die holder 1 and the lower die holder 2 is ensured, and the upper die holder 1 and the lower die holder 2 are prevented from being expanded by air pressure to generate displacement when colloid is injected, the molding quality of the model is guaranteed, when the colloid is injected, when the injection pipeline is inserted into the main runner 6, the injection pipeline is contacted with the cutting sheet 42, along with the continuous insertion of the injection pipeline, the injection pipeline pushes the cutting sheet 42, and the cutting sheet 42 is extruded towards the front end and the rear end through the arc surface on the surface of the cutting sheet 42, so that the cutting sheet 42 is contracted into the interlayer sliding groove 41, at the moment, the spring 43 is compressed and deformed, the main runner 6 is communicated with the upper die core 5, so that the colloid is injected into the die cavity formed by the upper die core 5 and the lower die core 11, after the colloid is injected, the injection pipeline is pulled out, at the moment, the spring 43 is reset to pop the cutting sheet 42 out from the interlayer sliding groove 41, the main runner 6 is closed through the splicing and closing of the two cutting sheets 42, the tailings are cut off when the cutting sheet 42 is closed, the later manual cutting off is not needed, the labor power is saved, the production efficiency is improved, when the cutting sheets 42 are closed, the leveling roller 422 on the surface rotates through the roller shaft 423, the colloid in the die cavity is smoothed, the phenomena of protrusion or foaming and the like of the colloid when the injection is finished are avoided, the molding quality of the model is improved, then the colloid is waited for cooling and molding, after the model is molded, the upper die base 1 is separated from the lower die base 2, at the moment, the molded model in the lower die core 11 needs to be subjected to demolding treatment, the traditional demolding ejector pin 13 is subjected to single-point stress, the stress of the model is uneven in the demolding process, the demolding speed is influenced, meanwhile, the model is easily damaged, the ejector pin 13 is improved, the ejector pin 13 penetrates into the inside of the ejector hole 83 to be contacted with the model when the mold is demolded, the arc-shaped surface of the ejector pin 13 is abutted against the model and then drives the ejector pin 13 to expand towards the periphery when the ejector pin 13 is contacted with the model, at the moment, the ejector pin 13 rotates with the fixed base 81 through the rotating shaft 82 to be matched with the circular truncated cone-shaped ejector hole 83 to enable the ejector pin 13 to be better expanded, and the ejector pin 13 is ejected out of the model from the four peripheral corners of the model after being expanded, make the model atress even, can better with quick drawing of patterns to the model, combine the rubber sleeve of 13 surface parcels of thimble simultaneously for the difficult impairement of mould release in-process model.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A plastic mold comprises an upper mold base (1) and a lower mold base (2), and is characterized in that the upper mold base (1) is located on one side of the lower mold base (2), the upper mold base (1) is composed of an upper mold base plate (3), an upper mold base (4) and an upper mold core (5), the upper mold base plate (3) is located on one side of the upper mold base (4), the upper mold core (5) is embedded in the middle position of the outer surface of the other side of the upper mold base (4), main runners (6) are respectively arranged in the middle positions of the outer surfaces of the upper mold base plate (3) and one side of the upper mold base (4), the lower mold base (2) is composed of a lower mold base (7), a fixing plate (8) and a lower mold base plate (9), the lower mold base (7) is located on one side of the fixing plate (8), the lower mold base plate (9) is located on the other side of the fixing plate (8), and a positioning guide pillar (10) is fixedly installed on the outer surface of the corner position of one side of the lower mold base (7), a lower die core (11) is arranged in the middle of the outer surface of one side of the lower die frame (7), guide rods (12) are fixedly arranged at corners of the outer surface of one side of the fixing plate (8), an ejector pin (13) is movably arranged in the middle of the outer surface of one side of the fixing plate (8), and square irons (14) are fixedly arranged at the front end and the rear end of the outer surface of one side of the lower die base plate (9);
interlayer sliding grooves (41) are formed in the inner portion of the upper die frame (4) and located on the periphery of the main runner (6), cutting pieces (42) are arranged at the front end and the rear end of the inner portion of each interlayer sliding groove (41) in a sliding mode, a spring (43) is fixedly installed between each cutting piece (42) and each interlayer sliding groove (41), the two cutting pieces (42) are spliced to form a disc shape, the diameter of the disc formed by splicing the cutting pieces (42) is larger than that of the main runner (6), the outer surface of one side of each cutting piece (42) is an arc-shaped surface, and the thickness of one end, close to the main runner (6), of each cutting piece (42) is smaller than that of one end, far away from the main runner (6);
a groove (421) is formed in one end, close to the main flow channel (6), of the outer surface of the other side of the cutting piece (42), a smoothing roller (422) is movably mounted inside the groove (421), roller shafts (423) are movably mounted between the outer surfaces of the upper end and the lower end of the smoothing roller (422) and the groove (421), and the smoothing roller (422) protrudes out of the surface of the groove (421);
the die comprises an upper die holder (1), a fixing ring (101) is movably mounted in the middle of the outer surface of the front end and the rear end of the upper die holder (1), a movable shaft (102) is movably mounted between the fixing ring (101) and the upper die holder (1), a first meshed tooth (103) is arranged on the inner surface of the fixing ring (101), a fixing buckle (104) is fixedly mounted in the middle of the outer surface of the front end and the rear end of the lower die holder (2), an adjusting screw (105) is movably mounted at one end, far away from the lower die holder (2), of the fixing buckle (104), a second meshed tooth (106) is arranged at one end, far away from the lower die holder (2), of the peripheral outer surface of the adjusting screw (105), a thread (107) is arranged at the rear end of the outer surface of the outer end of the lower die holder (2), and screw holes are formed in the positions, corresponding to the adjusting screw (105), of the outer surfaces of the front end and the rear end of the lower die holder (2);
the fixing ring (101) can rotate ninety degrees through the movable shaft (102), the adjusting screw (105) penetrates through the fixing buckle (104), the fixing ring (101) and the inner part of the screw hole, and the first and second meshing teeth (103, 106) are meshed with each other.
2. The plastic mold according to claim 1, wherein a fixing seat (81) is fixedly installed on an outer surface of one side of the fixing plate (8) at a position corresponding to the ejector pin (13), a rotating shaft (82) is movably installed between the fixing seat (81) and the ejector pin (13), one side of an outer surface of one end of the ejector pin (13) close to the fixing plate (8) is an arc-shaped surface, and an ejection hole (83) is formed in a center of the lower mold core (11).
3. The plastic mold according to claim 2, wherein the ejector pin (13) penetrates through the ejector hole (83), the ejector hole (83) is in a circular truncated cone shape, the diameter of one side of the ejector hole (83) is larger than that of the other side of the ejector hole, and the outer surface of the ejector pin (13) is wrapped with a rubber sleeve.
4. The plastic mold according to claim 1, wherein the upper mold base (1) and the lower mold base (2) are connected through a positioning guide post (10), the number of the fixing plates (8) is two, the fixing plate (8) on one side is fixedly connected with the lower mold base (7) through a guide rod (12), and the two fixing plates (8) are movably connected through the guide rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010774527.5A CN111907008B (en) | 2020-08-04 | 2020-08-04 | Plastic mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010774527.5A CN111907008B (en) | 2020-08-04 | 2020-08-04 | Plastic mold |
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| CN111907008A CN111907008A (en) | 2020-11-10 |
| CN111907008B true CN111907008B (en) | 2022-03-04 |
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Effective date of registration: 20220130 Address after: 215002 Daxin science and Technology Park, Huguan District, Suzhou high tech Zone, Suzhou City, Jiangsu Province Applicant after: Courage mould plastic (Suzhou) Co.,Ltd. Address before: 243041 Building 5, Chunhui home, Yinshan East Road, Yushan District, Ma'anshan City, Anhui Province Applicant before: Cheng Zhiyuan |
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