CN111002532A - Automatic demoulding injection mold - Google Patents
Automatic demoulding injection mold Download PDFInfo
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- CN111002532A CN111002532A CN201811166510.0A CN201811166510A CN111002532A CN 111002532 A CN111002532 A CN 111002532A CN 201811166510 A CN201811166510 A CN 201811166510A CN 111002532 A CN111002532 A CN 111002532A
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- Prior art keywords
- die
- push
- ejector pin
- bottom plate
- plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2618—Moulds having screw-threaded mould walls
- B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
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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
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4471—Removing or ejecting moulded articles for undercut articles using flexible or pivotable undercut forming elements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an automatic demoulding injection mold, which comprises a fixed mold component and a movable mold component; the movable mould component is sequentially provided with a push-off mechanism, a lower template, a rotating mechanism and a bottom plate from top to bottom and also comprises lower mould cores the number of which corresponds to that of the upper moulds; the lower template and the bottom plate are fixedly connected through a plurality of struts; each lower die core penetrates through the lower die plate, and the upper end surface of the lower die plate is provided with a push-off mechanism; the push-off mechanism comprises a push plate and a first spring connected between the push plate and the lower template; the rotating mechanism comprises a motor, a driving gear connected to the output end of the motor, a first driven gear connected with the driving gear through a chain and a plurality of second driven gears meshed with the first driven gear; each second driven gear is fixedly connected to the lower end of a lower die core; the invention can protect the internal thread of the product, realize the thorough separation of the lower die core and the product and has high production efficiency.
Description
Technical Field
The invention relates to the field of molds, in particular to an automatic demolding injection mold.
Background
The conventional feeding bottle is made of plastic materials and comprises a nipple, a threaded cover, a handle, a bottle body and the like, wherein the threaded cover is provided with internal threads and is mostly manufactured through a hot runner injection molding process.
The utility model discloses an automatic demoulding mechanism of 2012203916694 in injection mold internal thread utilizes this mechanism, and the rotatory screw thread that deviates from of product rotary core that will produce slowly rises, simultaneously, takes off the flitch and slowly rebound and keep always with product in close contact with under the effect of spring, after the screw thread is deviate from completely to the product, takes off the flitch and continues upwards ejecting one section distance under the effect of spring to ejecting whole product, above-mentioned process has accomplished the whole process of product from the die sinking to the drawing of patterns.
The push-out force to the product is limited in the patent, effective demoulding of the product cannot be guaranteed, and one group of demoulding mechanisms can only remove one product at a time, so that the production efficiency is low.
Disclosure of Invention
The invention aims to provide an automatic demoulding injection mould which can protect internal threads of a product, realize the thorough separation of a lower mould core and the product and has high production efficiency.
In order to solve the technical problem, the technical scheme of the invention is as follows: an automatic demoulding injection mold comprises a fixed mold component and a movable mold component;
the fixed die assembly is provided with a heating hot runner system, a hot nozzle, a hot runner plate and a temperature control part connected with a die temperature controller, and the lower end of the fixed die assembly is provided with a plurality of upper dies;
the movable mould component is sequentially provided with a push-off mechanism, a lower template, a rotating mechanism and a bottom plate from top to bottom and also comprises lower mould cores the number of which corresponds to that of the upper moulds; the lower template and the bottom plate are fixedly connected through a plurality of struts; each lower die core penetrates through the lower die plate, and the upper end surface of the lower die plate is provided with a push-off mechanism; the push-off mechanism comprises a push plate and a first spring connected between the push plate and the lower template;
the rotating mechanism comprises a motor, a driving gear connected to the output end of the motor, a first driven gear connected with the driving gear through a chain and a plurality of second driven gears meshed with the first driven gear; each second driven gear is fixedly connected to the lower end of a lower die core.
The further improvement is that the lower template is provided with a first mounting hole for the lower die core to pass through, and the aperture at the two ends of the first mounting hole is D1The diameter of the middle of the first mounting hole is D2Wherein D is1＞D2(ii) a The upper end and the lower end of each first mounting hole are respectively provided with a conical bearing; the first mentionedThe number of the mounting holes is equal to that of the lower die cores. In the invention, the conical bearings are arranged in the two sides of the first mounting hole of the lower template, so that the lower die core is prevented from rotating unsmoothly due to the contact between the lower template and the lower die core in the process of rotating driven by the rotating mechanism, and the efficiency of rotary demoulding is prevented from being influenced; more seriously, if the rotating mechanism cannot effectively drive the lower die core to rotate, the product can still be in threaded connection with the lower die core, and the product is ejected out of the die manually or mechanically, so that internal threads and external threads of the product and the lower die core can be damaged, and certain loss is caused.
In a further improvement, the push plate is provided with a plurality of second mounting holes, and a seat ring is arranged in each second mounting hole; the lower die core penetrates through the seat ring, and a threaded part of the lower die core protrudes out of the seat ring; the upper die, the lower die corresponding to the upper die and the seat ring corresponding to the upper die enclose a cavity. When the movable mold component and the fixed mold component are separated, the seat ring pushes the product gradually separated from the lower mold core to be away from the lower mold plate until the product is completely separated from the lower mold core under the action of the first spring elasticity of the push plate in the push-off mechanism, so that the product is conveniently separated from the seat ring fixedly connected to the push plate by the lower part in a manual or mechanical mode, the thorough demolding is further ensured, the product and the lower mold core are protected, the demolding efficiency is improved, and the production efficiency is improved.
The second mounting hole is in a step shape with a small upper part and a big lower part, and the cross section of the second mounting hole is in a major arc shape; correspondingly, the outer edge of the lower end of the seat ring is provided with a convex edge, and the convex edge is in a shape of a major arc. The lower part of the seat ring corresponds to the corresponding major arc arch of the second mounting hole, so that the seat ring and the push plate are favorably installed in a contraposition mode, and the seat ring is prevented from rotating relative to the push plate in the installation process.
In a further improvement, the seat ring is of a split structure and comprises a first part and a second part which are oppositely arranged; the first component is fixedly connected with the lower template, and the second component is positioned in the second mounting hole and fixedly connected with the push plate. According to the invention, the seat ring is arranged into a split structure, so that in the process that the rotating mechanism drives the lower die core to rotate and separate a product with an internal thread, the second part is driven by the push plate to drive the product to the direction away from the lower die core along with the push plate, and the first part fixedly connected to the lower die plate is fixed on the lower die plate and is separated from the lower end face of the product. The product is separated from the first component of the seat ring by matching with the elastic force of the push-off mechanism in the process of driving the lower die core to rotate and demould by the rotating mechanism, so that only part of the lower end of the product is tightly connected with the second component, and compared with the original method, the lower end surface of the product is tightly combined with the upper end of the whole seat ring. Preferably, the first part and the second part are equal in size, namely, a contact plane between the first part and the second part is vertically arranged; preferably, the plane of contact between the first part and the second part is a plane which is obliquely arranged in the vertical direction, so that the upper end surface of the first part is larger than that of the second part, and on one hand, the thrust of the push-off mechanism is further utilized, and the product is favorably and thoroughly separated from the seat ring; on the other hand, because the contact surface between first part and the second part is the face that vertical direction slope set up, make when the second part along with the in-process that the push pedal reciprocated, this contact surface has certain guide effect, prevents to take place the skew between first part and the second part, influences the structure of die cavity, is unfavorable for the quality of product.
Further improved, the device also comprises an ejection mechanism; the ejection mechanism comprises an umbrella top, a second spring, a thimble panel and a thimble bottom plate; the umbrella top is provided with an ejection part and a rod part, and the umbrella top penetrates through the lower die core; the lower end of the umbrella top is fixed on the thimble panel; the lower part of the umbrella top is sleeved with a second spring, and the upper end and the lower end of the second spring are respectively limited to the corresponding lower die core and the corresponding ejector pin panel; the thimble bottom plate is positioned at the lower part of the thimble panel; the support column penetrates through the ejector pin panel and the ejector pin bottom plate; the thimble bottom plate pushes the thimble panel and the umbrella top to move towards the lower template under the action of external force;
the bottom plate is provided with a plurality of ejector rod holes which are symmetrically arranged; the left end part and the right end part of the ejector pin bottom plate cover the ejector pin hole.
According to the invention, the ejector rod extends into the ejector rod hole to push the ejector pin bottom plate to move towards the lower template, the ejector pin bottom plate drives the ejector pin panel, and the ejector pin panel drives the umbrella top to push the product down from the seat ring from the inner side of the product; at the moment, the second spring is in a compression state due to the thrust, the thrust is not applied to the ejector pin bottom plate after the product is ejected, the ejector rod is taken out of the driven die assembly, the ejector pin panel pushes the ejector pin panel to the bottom plate under the action of the restoring force of the second spring, and meanwhile, the ejector pin panel originally stretches out of the lower die core and falls back to the lower die core again on the upper portion of the umbrella top.
The lower end of the lower die core is provided with a first accommodating groove, the thimble panel is provided with second accommodating grooves corresponding to the first accommodating grooves in quantity and position, and two ends of each second spring are respectively positioned in the corresponding first accommodating groove and the corresponding second accommodating groove. Through first holding tank and second holding tank with the second spring setting between lower mould core and thimble panel, make things convenient for the installation of second spring on the one hand, on the other hand still has certain guide effect to second spring form change cooperation umbrella top.
In a further improvement, the support column is sleeved with a third spring, and the lower end of the support column penetrates through the ejector pin panel and the ejector pin base plate; the third spring is located between the ejector pin panel and the lower template. According to the invention, the third spring is additionally arranged between the thimble surface plate and the lower template, so that the thimble panel, the thimble bottom plate and the umbrella top can be reset conveniently, meanwhile, the thrust applied to the umbrella top through the ejector rod can be limited, the deformation of the position of the product, which is contacted with the umbrella top, caused by the overlarge thrust on the umbrella top can be prevented, namely, through the arrangement, the product can be completely separated from the seat ring by the umbrella top from the upper part and the lower part of the seat ring, meanwhile, the internal force of the product is controlled to be applied to the umbrella top to be smaller, the product is protected, and the deformation caused by the top collision of.
Preferably, the ejector rod hole is in a horizontally arranged gourd shape; and a plurality of ejector rod holes are symmetrically arranged on the bottom plate. Set up the ejector pin hole into the shape of calabash shape cooperation ejector pin, the crossing setting of two circular ports of a big one little constitutes the calabash shape, works as the ejector pin warp the ejector pin hole stretches into the bottom plate and promotes thimble bottom plate, and the ejector pin can not take place to squint or slope because of the stop motion that strictly receives the ejector pin hole, guarantees to be the face contact between each ejector pin and the thimble bottom plate to guarantee that the thimble bottom plate can not take place to incline or squint under the promotion of ejector pin, guarantee the thimble bottom plate along smooth and easy reciprocating of pillar.
In a further improvement, two oppositely arranged mold feet are fixedly connected between the lower template and the bottom plate, the ejection mechanism and the support are positioned between the two mold feet, and the mold feet face the inner side of the mold and are provided with abdicating grooves. When the top stick stretches into between bottom plate and the lower bolster, the top stick that the cross section is calabash shape is close to the part of die leg one side is in the inslot that gives way reciprocates. According to the invention, a certain guiding effect is achieved on the up-and-down movement of the jacking rod through the abdicating groove, so that the matching precision degree of all the parts is improved, and the device is stable and reliable.
By adopting the technical scheme, the invention has the beneficial effects that: a heating hot runner system in the fixed die assembly is matched with the temperature control part, so that the quality of a product obtained by injection molding is good, and the defects are few; a driving gear of a rotating mechanism of the movable mold assembly drives a first driven gear through a chain under the driving of a motor, the first driven gear drives a plurality of second driven gears meshed with the first driven gear, each second driven gear is fixedly connected to the lower part of a lower mold core, the lower mold core rotates under the driving of the rotating mechanism, and a product in threaded connection with the lower mold core does not rotate due to a push plate fixedly connected to a push-off mechanism, so that the lower mold core is separated from the product; when the rotating mechanism rotates, the pushing-off mechanism pushes the push plate to be far away from the lower die plate by the restoring force of the compressed first spring, and the pushing-off mechanism cooperates with the rotating mechanism to separate a product from the lower die core, so that the product internal threads are protected by the invention under the combined action of the rotating mechanism and the pushing-off mechanism groove, the lower die core is thoroughly separated from the product, and the production efficiency is high.
Thereby achieving the above object of the present invention.
Drawings
FIG. 1 is a perspective view of an automatic release injection mold according to the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a sectional view A-A of FIG. 2 (the stationary mold assembly and the movable mold assembly in a separated state);
FIG. 4 is a bottom view of the present invention;
FIG. 5 is a schematic view of the construction of the rotating assembly of the present invention;
FIG. 6 is a perspective view of a hot runner plate of the present invention;
FIG. 7 is a perspective view of a push plate according to the present invention;
FIG. 8 is a perspective view of the lower platen of the present invention;
FIG. 9 is a perspective view of a mold foot according to the present invention;
FIG. 10 is a perspective view of a thimble panel of the present invention;
FIG. 11 is a perspective view of the ejector pin base plate of the present invention;
FIG. 12 is a perspective view of the base plate of the present invention;
FIG. 13 is a perspective view of the seat ring of the present invention attached to the push plate in an integral configuration;
FIG. 14 is a top view of the split seat ring of the present invention;
FIG. 15 is an enlarged view at B in FIG. 3;
fig. 16 is an enlarged view at C in fig. 3.
In the figure:
a fixed die assembly 1; heating the hot runner system 11; a hot nozzle 12; a hot runner plate 13; a temperature control member 14; an upper die 15; a movable mold component 2; a push-off mechanism 21; a push plate 211; a first spring 212; a second mounting hole 213; a seat ring 214; a raised edge 215; a first member 216; a second member 217; a lower die plate 22; a first mounting hole 221; a conical bearing 222; a rotating mechanism 23; a motor 231; a drive gear 232; a first driven gear 234; a second driven gear 235; a base plate 24; a jack post hole 241; a lower mold core 25; the first receiving groove 251; a support post 26; a third spring 27; the mold legs 28; a relief groove 281; an ejection mechanism 3; an umbrella top 31; a push-out portion 311; a rod portion 312; a second spring 32; a thimble panel 33; the second receiving groove 331; and a thimble base plate 34.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
The invention discloses an automatic demoulding injection mould, as shown in figures 1 to 16, comprising a fixed mould component 1 and a movable mould component 2; the fixed die component 1 is provided with a heating hot runner system 11, a hot nozzle 12, a hot runner plate 13 and a temperature control part 14 connected with a die temperature controller, and the lower end of the fixed die component 1 is provided with a plurality of upper dies 15; the movable mold component 2 is sequentially provided with a push-off mechanism 21, a lower template 22, a rotating mechanism 23 and a bottom plate 24 from top to bottom, and also comprises lower mold cores 25 the number of which corresponds to that of the upper mold 15; the lower template 22 and the bottom plate 24 are fixedly connected through a plurality of pillars 26; each lower die core 25 penetrates through the lower template 22, and the upper end face of the lower template 22 is provided with a push-off mechanism 21; the push-off mechanism 21 comprises a push plate 211 and a first spring 212 connected between the push plate 211 and the lower template 22;
the rotating mechanism 23 comprises a motor 231, a driving gear 232 connected to the output end of the motor 231, a first driven gear 234 connected to the driving gear 232 through a chain, and a plurality of second driven gears 235 engaged with the first driven gear 234; each of the second driven gears 235 is attached to a lower end of a lower mold core 25. In this embodiment, the heating hot runner system 11 in the fixed mold assembly 1 is matched with the temperature control member 14, so as to prevent temperature change in the injection molding process and ensure good quality and few defects of products obtained by injection molding; the rotating mechanism 23 of the movable mold assembly 2 is driven by the motor 231, the driving gear 232 at the output end of the motor 231 drives two first driven gears 234 through a chain, and the two driven gears are installed on the strut 26 between the lower template 22 and the bottom plate 24; each first driven gear 234 drives four second driven gears 235 engaged with the first driven gear, each second driven gear 235 is fixedly connected to the lower part of one lower mold core 25, the lower mold core 25 is driven by the rotating mechanism 23 to rotate, and a product in threaded connection with the lower mold core 25 does not rotate due to the push plate 211 fixedly connected to the push-off mechanism 21, so that the lower mold core 25 is separated from the product; when the rotating mechanism 23 rotates, the push plate 211 is pushed away from the lower die plate 22 by the restoring force of the first spring 212 compressed by the push-off mechanism 21, and the product is separated from the lower die core 25 by the aid of the rotating mechanism 23, so that the lower die core 25 and the product are completely separated by cooperation of the rotating mechanism 23 and the push-off mechanism 21, internal threads of the product are protected in the separation process, and production efficiency is high. Wherein two first driven gears 234 are mounted on two posts 26 located in the middle of the base plate 24.
In this embodiment, the lower template 22 is provided with a first mounting hole 221 for the lower mold core 25 to pass through, and the hole diameters of two ends of the first mounting hole 221 are D1The diameter of the middle hole of the first mounting hole 221 is D2Wherein D is1＞D2(ii) a The upper end and the lower end of each first mounting hole 221 are respectively provided with a conical bearing 222; the number of the first mounting holes 221 is equal to the number of the lower mold cores 25. In the invention, the conical bearings 222 are arranged in the two sides of the first mounting hole 221 of the lower template 22, so that the lower die core 25 is prevented from rotating unsmoothly due to the contact between the lower template 22 and the lower die core 25 in the process that the lower die core 25 is driven to rotate by the rotating mechanism 23, and the efficiency of rotary demoulding is influenced; more seriously, if the rotating mechanism 23 cannot effectively drive the lower mold core 25 to rotate, the product may still be in threaded connection with the lower mold core 25, and then the product is removed from the lower mold assembly 2 manually or mechanically, so that the product and the internal threads and the external threads of the lower mold core 25 are damaged, and the product is unqualified and the lower mold core 25 is damaged.
In this embodiment, the push plate 211 is provided with a plurality of second mounting holes 213, and a seat ring 214 is installed in each second mounting hole 213; the lower die core 25 penetrates through the seat ring 214, and the threaded part of the lower die core 25 protrudes out of the seat ring 214; the upper die 15, the lower die core 25 corresponding to the upper die 15 and the seat ring 214 are enclosed to form a cavity. When the movable die component 2 is pressed on the fixed die component 1, the first spring 212 of the push-off mechanism 21 is in a compressed state; in the invention, when the movable mold component 2 is separated from the fixed mold component 1, the retainer plate 214 pushes the product gradually separated from the lower mold core 25 to be far away from the lower mold plate 22 until the product is completely separated from the lower mold core 25 under the restoring force of the first spring 212 by the push plate 211 in the push-off mechanism 21, so that the product can be conveniently separated from the retainer plate 214 fixedly connected to the push plate 211 by the lower part in a manual or mechanical mode, the thorough demolding is further ensured, the product and the lower mold core 25 are protected, the demolding efficiency is improved, and the production efficiency is improved.
In this embodiment, the second mounting hole 213 is a step shape with a small top and a large bottom, and the cross section of the second mounting hole 213 is a major arc shape; correspondingly, the lower end of the race 214 is provided with a convex edge 215 along the outer direction, and the convex edge 215 is in a shape of a major arc. The lower part of the seat ring 214 corresponds to the arc shape of the second mounting hole 213, which is beneficial to the alignment mounting between the seat ring 214 and the push plate 211 and prevents the seat ring 214 from rotating relative to the push plate 211 in the mounting process.
The seat ring 214 in this embodiment is a split structure, and includes a first part 216 and a second part 217 that are oppositely disposed; the first member 216 is fixedly connected to the lower template 22, and the second member 217 is located in the second mounting hole 213 and fixedly connected to the push plate 211. In the invention, the seat ring 214 is designed into a split structure, so that in the process that the rotating mechanism 23 drives the lower mold core 25 to rotate and separate a product with internal threads, the second part 217 is driven by the push plate 211 to drive the product to the direction away from the lower mold core 25 along with the push plate 211, and the first part 216 fixedly connected to the lower template 22 is fixed on the lower template 22 and is separated from the lower end face of the product. In the process that the rotating mechanism 23 drives the lower die core 25 to rotate and demould, the product is separated from the first component of the seat ring 214 by matching with the elastic force of the push-off mechanism 21, therefore, only part of the lower end of the product is tightly connected with the second part 217, compared with the original method that the lower end surface of the product is tightly combined with the upper end of the whole seat ring 214, the seat ring 214 is arranged into a split structure, the product is separated from the seat ring 214 in a subsequent manual mode or an automatic mode, the product can be separated from the seat ring 214 only by using smaller force, the product is protected, and the product is prevented from being separated from the seat ring 214 and deformed. Preferably, the first part 216 and the second part 217 are equal in size and same in shape, that is, the plane of contact between the first part 216 and the second part 217 is vertically arranged; further preferably, a plane where the first part 216 and the second part 217 are contacted is a plane which is obliquely arranged in the vertical direction, so that the upper end surface of the first part 216 is larger than that of the second part 217, and on one hand, the thrust of the push-off mechanism 21 is further utilized, and the product is favorably and completely separated from the seat ring 214; on the other hand, because the contact surface between the first part 216 and the second part 217 is a surface which is obliquely arranged in the vertical direction, when the second part 217 moves up and down along with the push plate 211, the contact surface has a certain guiding function, so that the first part 216 and the second part 217 are prevented from deviating, the structure of the cavity is prevented from being influenced, and the quality of products is not facilitated.
The embodiment also comprises an ejection mechanism 3; the ejection mechanism 3 comprises an umbrella top 31, a second spring 32, a thimble panel 33 and a thimble bottom plate 34; the umbrella top 31 is provided with an ejecting part 311 and a rod part 312, and the umbrella top 31 penetrates through the lower die core 25; the lower end of the umbrella top 31 is fixed on the thimble panel 33; a second spring 32 is sleeved at the lower part of the umbrella top 31, and the upper end and the lower end of the second spring 32 are respectively limited at the corresponding lower die core 25 and the corresponding ejector pin panel 33; the thimble base plate 34 is located at the lower part of the thimble panel 33; the supporting column 26 passes through the thimble panel 33 and the thimble base plate 34; the thimble base plate 34 pushes the thimble panel 33 and the umbrella top 31 to move towards the lower template 22 under the action of external force;
a plurality of symmetrically arranged ejector rod holes 241 on the bottom plate 24; the left and right end portions of the thimble base plate 34 shield the thimble holes 241.
In the invention, the ejector rod extends into the ejector rod hole 241 to push the ejector pin base plate 34 to move towards the lower template 22, the ejector pin base plate 34 drives the ejector pin panel 33, and the ejector pin panel 33 drives the umbrella top 31 to lift the product from the seat ring 214 from the inner side of the product; at this time, the second spring 32 is compressed by the thrust, and after the product is ejected, the ejector rod no longer applies the thrust to the ejector pin bottom plate 34, the ejector rod is taken out from the die assembly 2, the ejector pin panel 33 pushes the ejector pin panel 33 to the bottom plate 24 under the action of the restoring force of the second spring 32, and meanwhile, the upper portion of the umbrella top 31 originally extending out of the lower die core 25 falls back to the lower die core 25 again.
In this embodiment, the lower end of the lower mold core 25 is provided with a first receiving groove 251, the thimble panel 33 is provided with a plurality of second receiving grooves 331 corresponding to the first receiving grooves 251 in number and position, and two ends of each second spring 32 are respectively located in the corresponding first receiving groove 251 and second receiving groove 331. The second spring 32 is disposed between the lower mold core 25 and the ejector pin panel 33 through the first receiving groove 251 and the second receiving groove 331, which facilitates the installation of the second spring 32, and the umbrella top 31 has a certain guiding function for the second spring 32 for the form change of the second spring 32.
In this embodiment, the third spring 27 is sleeved on the pillar 26 located at the four corners of the bottom plate 24, and the lower end of the pillar 26 passes through the thimble panel 33 and the thimble bottom plate 34; the third spring 27 is located between the thimble panel 33 and the lower template 22. According to the invention, the third spring 27 is additionally arranged between the thimble panel and the lower template 22, so that the thimble panel 33, the thimble bottom plate 34 and the umbrella top 31 can be reset, meanwhile, the thrust applied to the umbrella top 31 through the top stick can be limited, the deformation of the position of the product contacted with the umbrella top 31 due to the overlarge thrust of the umbrella top 31 is prevented, namely, through the arrangement, the product is completely separated from the seat ring 214 by the umbrella top 31 from the upper part and the lower part of the seat ring 214, meanwhile, the internal force applied to the product by the umbrella top 31 is controlled to be small, the product is protected, and the deformation caused by the top collision of the umbrella top 31 is avoided.
In this embodiment, the ejector rod hole 241 is preferably in a gourd shape arranged horizontally; a plurality of jack rod holes 241 are symmetrically formed on the bottom plate 24. Set up ejector pin hole 241 into the shape of calabash shape cooperation ejector pin, the crossing setting of two circular ports of a big one little constitutes calabash shape ejector pin hole 241, works as the ejector pin warp ejector pin hole 241 stretches into bottom plate 24 and promotes thimble bottom plate 34, and the ejector pin can not take place to squint or slope because of the limiting displacement who strictly receives ejector pin hole 241, and it is the face contact to guarantee that each ejector pin front end and thimble bottom plate 34 between to guarantee that thimble bottom plate 34 can not take place to incline or squint under the promotion of ejector pin, guarantee thimble bottom plate 34 along the smooth and easy reciprocating of pillar 26.
In this embodiment, two mold legs 28 are fixedly connected between the lower mold plate 22 and the bottom plate 24, the ejection mechanism 3 and the pillar 26 are located between the two mold legs 28, and the mold leg 28 has a relief groove 281 facing the inner side of the mold. When the top stick extends between the bottom plate 24 and the lower template 22, the part of the top stick with the gourd-shaped cross section, which is close to one side of the die leg 28, moves up and down in the abdicating groove 281. According to the invention, the abdicating groove 281 plays a certain guiding role in the up-and-down movement of the jacking rod, so that the matching precision degree of all the parts is improved, and the device is stable and reliable.
The working process of the embodiment is as follows:
the fixed die component 1 and the movable die component 2 are matched, molten raw materials are led into a cavity, and after a threaded cover product with internal threads is formed, the movable die component 2 is far away from the fixed die component 1;
starting a motor 231 of the rotating mechanism 23, driving gears 232 drive two first driven gears 234 arranged on the support 26 through chains, each first driven gear 234 drives four second driven gears 235 engaged with the first driven gear to rotate, each second driven gear 235 drives a lower mold core 25 to rotate, and a push plate 211 of the push-off mechanism 21 applies a thrust far away from the lower mold core 25 to the push plate 211 and a product in the process that the product rotates and is separated from the lower mold core 25 along with the continuous rotation of the product, namely, the product is continuously far away from the lower mold core 25 relative to the lower mold core 25; under the combined action of the rotating mechanism 23 and the push-off mechanism 21, the product is completely removed from the lower die core 25;
when the product is completely removed from the lower mold core 25, the lower end of the product is separated from the first member 216;
the ejector rods extend into the ejector rod holes 241, a plurality of symmetrically arranged ejector rods are in surface contact with the ejector pin base plates 34 respectively, the ejector pin base plates 34 are pushed to move towards the lower die plate 22, the ejector pin base plates 34 push the ejector pin panels 33 and the umbrella tops 31 to move towards the products, namely the umbrella tops 31 move relative to the products, the lower ends of the products completely separated from the lower die cores 25 are fixedly connected to the upper ends of the second parts 217, the umbrella tops 31 move towards the products in the products, the ejection parts 311 of the umbrella tops 31 are in contact with the interiors of the products to apply outward thrust to the products, the products fall off from the second parts 217 of the seat rings 214, namely the ejection mechanisms 3 completely eject the products from the seat rings 214, and product demoulding is completed;
the ejector mechanism 3 is returned to the side of the base plate 24 by the restoring forces of the second spring 32 and the third spring 27.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (10)
1. The utility model provides an automatic drawing of patterns injection mold which characterized in that: comprises a fixed die component (1) and a movable die component (2);
the fixed die assembly (1) is provided with a heating hot runner system (11), a hot nozzle (12), a hot runner plate (13) and a temperature control part (14) connected with a die temperature controller, and the lower end of the fixed die assembly (1) is provided with a plurality of upper dies (15);
the moving die component (2) is sequentially provided with a push-off mechanism (21), a lower template (22), a rotating mechanism (23) and a bottom plate (24) from top to bottom, and also comprises lower die cores (25) the number of which corresponds to that of the upper die (15); the lower template (22) and the bottom plate (24) are fixedly connected through a plurality of pillars (26); each lower die core (25) penetrates through the lower template (22), and the upper end surface of the lower template (22) is provided with a push-off mechanism (21); the push-off mechanism (21) comprises a push plate (211) and a first spring (212) connected between the push plate (211) and the lower template (22);
the rotating mechanism (23) comprises a motor (231), a driving gear (232) connected to the output end of the motor (231), a first driven gear (234) connected with the driving gear (232) through a chain and a plurality of second driven gears (235) meshed with the first driven gear (234); each second driven gear (235) is fixedly connected to the lower end of a lower mold core (25).
2. The automatic release injection mold of claim 1, wherein: the lower template (22) is provided with a first mounting hole (221) for the lower die core (25) to pass through, and the hole diameters of two ends of the first mounting hole (221) are D1The diameter of the middle hole of the first mounting hole (221) is D2Wherein D is1＞D2(ii) a The upper end and the lower end of each first mounting hole (221) are respectively provided with a conical bearing (222); the number of the first mounting holes (221) is equal to that of the lower die cores (25).
3. The automatic release injection mold of claim 1, wherein: the push plate (211) is provided with a plurality of second mounting holes (213), and a seat ring (214) is arranged in each second mounting hole (213); the lower die core (25) penetrates through the seat ring (214), and a threaded part of the lower die core (25) protrudes out of the seat ring (214);
the upper die (15), the lower die corresponding to the upper die (15) and the seat ring (214) form a cavity in a surrounding mode.
4. An automatic release injection mold as defined in claim 3, wherein: the second mounting hole (213) is in a step shape with a small upper part and a big lower part, and the cross section of the second mounting hole (213) is in a major arc shape; correspondingly, the lower end of the seat ring (214) is provided with a convex edge outwards, and the convex edge is in a major arc shape.
5. The automatic release injection mold of claim 4, wherein: the seat ring (214) is of a split structure and comprises a first part (216) and a second part (217) which are oppositely arranged; the first part (216) is fixedly connected to the lower template (22), and the second part (217) is positioned in the second mounting hole (213) and fixedly connected with the push plate (211).
6. An automatic release injection mold according to any one of claims 1 to 5, characterized in that: the device also comprises an ejection mechanism (3);
the ejection mechanism (3) comprises an umbrella top (31), a second spring (32), a thimble panel (33) and a thimble bottom plate (34); the umbrella top (31) is provided with an ejection part (311) and a rod part (312), and the umbrella top (31) penetrates through the lower die core (25); the lower end of the umbrella top (31) is fixed on the thimble panel (33); a second spring (32) is sleeved at the lower part of the umbrella top (31), and the upper end and the lower end of the second spring (32) are respectively limited to the corresponding lower die core (25) and the ejector pin panel (33); the thimble bottom plate (34) is positioned at the lower part of the thimble panel (33); the support column (26) penetrates through the ejector pin panel (33) and the ejector pin base plate (34); the ejector pin bottom plate (34) pushes the ejector pin panel (33) and the umbrella top (31) to move towards the lower template (22) under the action of external force;
a plurality of ejector rod holes (241) symmetrically arranged on the bottom plate (24); the left end part and the right end part of the thimble base plate (34) shield the thimble hole (241).
7. The automatic release injection mold of claim 6, wherein: the lower end of the lower die core (25) is provided with a first accommodating groove (251), the ejector pin panel (33) is provided with second accommodating grooves (331) corresponding in number and position to the first accommodating groove (251), and two ends of each second spring (32) are respectively positioned in the corresponding first accommodating groove (251) and second accommodating groove (331).
8. The automatic release injection mold of claim 6, wherein: the supporting column (26) is sleeved with a third spring (27), and the lower end of the supporting column (26) penetrates through the ejector pin panel (33) and the ejector pin base plate (34); the third spring (27) is located between the ejector pin panel (33) and the lower template (22).
9. The automatic release injection mold of claim 8, wherein: the ejector rod hole (241) is in a gourd shape arranged transversely; the bottom plate (24) is symmetrically provided with a plurality of ejector rod holes (241).
10. The automatic release injection mold of claim 9, wherein: lower bolster (22) with link firmly two relative die feet (28) that set up between bottom plate (24), ejection mechanism (3) with pillar (26) are located two between die foot (28), die foot (28) orientation the mould inboard has the groove of stepping down (281).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811166510.0A CN111002532A (en) | 2018-10-08 | 2018-10-08 | Automatic demoulding injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811166510.0A CN111002532A (en) | 2018-10-08 | 2018-10-08 | Automatic demoulding injection mold |
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| CN111002532A true CN111002532A (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811166510.0A Pending CN111002532A (en) | 2018-10-08 | 2018-10-08 | Automatic demoulding injection mold |
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| CN114274489A (en) * | 2021-12-21 | 2022-04-05 | 安庆市悦发管业有限公司 | Spiral torsional mode HDPE winding pipe warp extrusion tooling |
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