CN107498777B - Special injection molding machine for stacking mold of middle injection of split mold of template - Google Patents
Special injection molding machine for stacking mold of middle injection of split mold of template Download PDFInfo
- Publication number
- CN107498777B CN107498777B CN201710853722.5A CN201710853722A CN107498777B CN 107498777 B CN107498777 B CN 107498777B CN 201710853722 A CN201710853722 A CN 201710853722A CN 107498777 B CN107498777 B CN 107498777B
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- band
- type brake
- mold
- template
- brake
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 56
- 238000002347 injection Methods 0.000 title claims abstract description 38
- 239000007924 injection Substances 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 230000001360 synchronised effect Effects 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims abstract description 13
- 239000004033 plastic Substances 0.000 claims description 17
- 229920003023 plastic Polymers 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000009415 formwork Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002991 molded plastic Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
- B29C45/12—Injection moulding apparatus using two or more fixed moulds, e.g. in tandem
-
- 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
-
- 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
- B29C45/66—Mould opening, closing or clamping devices mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a folding die special injection molding machine for middle injection of a die plate split moving die, which comprises a frame (1), a die (8), a pressurizing cylinder group, a pressurizing die plate (3), a band-type brake die plate (5), a band-type brake mechanism (6), a moving die cylinder (7), a die base (9) and an injection mechanism (11); the pressurizing oil cylinder (2) realizes the mode locking through the band-type brake mechanism (6); the die shifting oil cylinder (7) drives the pressurizing die plate (3) and the band-type brake die plate (5) to linearly open and close on the frame (1), a die shifting synchronizing mechanism (10) is arranged between the pressurizing die plate (3) and the band-type brake die plate (5), and the pressurizing die plate (3) and the band-type brake die plate (5) realize synchronous action through the die shifting synchronizing mechanism (10). The beneficial effects of the invention are as follows: the leakage risk generated when the mould is opened is avoided, the equipment structure is simplified, the reliability of the equipment is improved, and the running stability of the equipment is improved.
Description
Technical Field
The invention relates to a special injection molding machine for stacking molds by injecting in the middle of a mold plate split mold, belonging to the technical field of mold injection molding machines.
Background
Injection molding machines are also known as injection molding machines or injection molding machines. It is a main forming equipment for making thermoplastic plastics or thermosetting plastics into various shaped plastic products by using plastic forming mould. The device is divided into vertical type, horizontal type and full-electric type. The injection molding machine heats the plastic, applies high pressure to the molten plastic, and injects the molten plastic to fill the mold cavity. The working principle of the injection molding machine is similar to that of an injector for injection, and the injection molding machine injects plastic in a plasticized molten state (namely viscous state) into a closed mold cavity by means of the thrust of a screw (or a plunger) and obtains a product after solidification and shaping. With the continuous development of the injection molding industry, more and more enterprises consider to adopt a stack mold injection molding machine, the tonnage demand of the stack mold on the injection molding machine is low, more mold cavities are added, the yield can be multiplied when the same mold adopts the stack mold, the yield and profit are greatly improved, and a lot of energy sources and cost are saved.
However, the existing stack injection molding machine has the following problems:
(1) The existing mould locking mechanism of the stacked injection molding machine is provided with a fixed template and a movable template, one of the two cold half moulds is fixed on the fixed template of the injection molding machine, the other cold half mould is fixed on the movable template of the injection molding machine to perform mould opening and closing movement, and the hot half mould of the mould is pushed to move at a speed (usually half the speed) smaller than the speed of the movable template by a synchronous mechanism fixed on the mould so as to ensure that the two half moulds are simultaneously closed. The molten plastic is transferred to the hot mold half through the cold mold half on the stationary side and then injected into the cavities on both sides to form the plastic article. Therefore, when the mold is opened, a sealing device is needed to prevent leakage, the manufacturing difficulty is increased, the leakage risk always exists, and the use reliability is affected. And when the mould is locked, an extra contact force is needed to ensure the tightness between the fixed cold half mould and the hot half mould, which counteracts a part of mould locking force to influence the consistency of the mould locking force at two sides of the mould, and larger mould locking force is needed to ensure smooth forming, so that the reliability of the equipment is poor.
(2) The band-type brake structure is an important mechanism in an injection molding machine, is a key of a mode locking step in an injection molding process, directly influences the quality and injection molding efficiency of injection molding products, is generally capable of being linked in pairs, is provided with two band-type brake cylinders to be pushed respectively, is separated in operation, cannot realize four-point linkage, cannot be held tightly or opened simultaneously when being operated during the band-type brake, influences the action time, and is low in working efficiency.
(3) The existing stack-mold injection molding machine has the advantages that the cold half mold on one side is fixed on the fixed template of the injection molding machine, the injection mechanism performs injection from one fixed side, the structure is complex, the production efficiency is lower, meanwhile, when the existing stack-mold injection molding machine performs mold opening and closing movement, the moving part always moves towards one direction, the frame of the injection molding machine can be subjected to larger impact, the service life of the injection molding machine is lower, the opposite-opening movement mode injection molding machine is an improvement on the basis of the stack-mold injection molding machine, the two movable molds always move relatively, the stress is mutually offset, the impact force is not transmitted to the frame, and the machine runs faster and more stably.
(4) The cold half die at one side of the existing stack-die injection molding machine is fixed on the fixed die plate of the injection molding machine, and the injection mechanism performs injection from the fixed side, so that the space of the ejection device is occupied, the ejection device (used for taking out the molded plastic product) of the traditional stack-die injection molding machine needs to be integrated on the die, so that the die structure is complex, and some products cannot be produced in a stack-die mode.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a special injection molding machine for stacking a mold, which is used for injecting the middle of a mold in a mold opening and moving manner, so that the leakage risk generated when the mold is opened can be avoided, the equipment structure is simplified, the reliability of equipment is improved, and the running stability of the equipment is improved.
The aim of the invention is realized by the following technical scheme: the special injection molding machine for stacking the mold comprises a frame and a mold, wherein the frame and the mold further comprise a pressurizing oil cylinder group, a pressurizing mold plate, a band-type brake mechanism, a mold moving oil cylinder, a mold base and an injection mechanism;
the pressurizing template and the band-type brake template are vertically arranged on the frame, the pressurizing oil cylinder group consists of a plurality of pressurizing oil cylinders, the pressurizing oil cylinders are fixed on the pressurizing template, the band-type brake mechanism is fixed on the band-type brake template, and a piston rod of the pressurizing oil cylinder extends through the pressurizing template and the band-type brake template when the pressurizing oil cylinder is locked, and the locking of the mold is realized through the band-type brake mechanism;
the mold consists of a hot half mold and cold half molds, wherein the cold half molds are positioned on two sides of the hot half mold and are used as laminating molds, a product cavity is formed between the hot half mold and the two cold half molds, the hot half mold is fixed on a frame through a mold base, and the two cold half molds are respectively fixed on a pressurizing mold plate and a band-type brake mold plate;
the mold shifting oil cylinder is arranged on the band-type brake template, a piston rod of the mold shifting oil cylinder is connected with the pressurizing template, the mold shifting oil cylinder drives the pressurizing template and the band-type brake template to linearly open and close the mold in the frame, a mold shifting synchronization mechanism is arranged between the pressurizing template and the band-type brake template, the pressurizing template and the band-type brake template realize synchronous action through the mold shifting synchronization mechanism, the injection mechanism is arranged on one side of the hot half mold, an injection hole corresponding to the injection mechanism is arranged on the hot half mold, a runner corresponding to the product cavity is arranged on the hot half mold, and the injection mechanism plasticizes a plastic raw material into a molten state and injects the plastic raw material into the hot half mold.
The pressurizing template and the band-type brake template are mutually parallel and are arranged in a mode of being perpendicular to the frame.
The frame on be provided with the linear guide who is used for pressurization template and band-type brake template action, the bottom of pressurization template and band-type brake template is provided with linear guide complex slider.
The number of the shifting formwork cylinders is two, and the shifting formwork cylinders are arranged on the band-type brake template in a diagonal mode.
The pressurizing template and the band-type brake template move relatively or oppositely, and the moving direction of the movable template is consistent with the moving direction of the rack arranged on the movable template.
The supercharging oil cylinder group consists of 4 supercharging oil cylinders symmetrically arranged on the supercharging template, and the band-type brake mechanism is a four-point linkage split-type band-type brake mechanism.
The band-type brake mechanism is a four-point linkage split-type band-type brake mechanism and comprises a band-type brake assembly and a band-type brake linkage assembly;
the brake assembly consists of a left brake linkage block and a right brake linkage block which are symmetrically arranged on a brake template, the left brake linkage block and the right brake linkage block are respectively composed of an upper brake nut, a lower brake nut and a linkage assembly, the upper brake nut and the lower brake nut are movably arranged on the brake template, the upper brake nut consists of an upper brake block I and a lower brake block I, the lower brake nut consists of an upper brake block II and a lower brake block II, the upper brake block I and the lower brake block I and the upper brake block II and the lower brake block II can be respectively subjected to a lower opposite opening action, the linkage assembly comprises a first connecting rod, a second connecting rod and a swinging part, the upper brake block I and the upper brake block II are connected through the first connecting rod, the lower brake block I and the lower brake block II are connected through the second connecting rod, and meanwhile, the lower brake block I and the upper brake block II are connected through the swinging part;
the band-type brake linkage assembly comprises an upper band-type brake push rod, a lower band-type brake push rod and a band-type brake oil cylinder, wherein the upper band-type brake push rod and the lower band-type brake push rod are arranged in parallel, one end of the upper band-type brake push rod is fixed on an upper brake block I of a left band-type brake linkage block, the other end of the upper band-type brake push rod is fixed on an upper brake block I of a right band-type brake linkage block, one end of the lower band-type brake push rod is fixed on a lower brake block II of the left band-type brake linkage block, the other end of the lower band-type brake push rod is fixed on a band-type brake template, and a piston rod end of the band-type brake oil cylinder is connected with any one of the upper band-type brake push rod and the lower band-type brake push rod to drive the upper band-type brake push rod and the lower band-type brake push rod to move up and down.
The upper band-type brake nut and the lower band-type brake nut are both arranged on the band-type brake template through band-type brake nut pressing plates, and an up-down kinematic pair is arranged between the upper band-type brake nut and the band-type brake nut pressing plates and between the lower band-type brake nut and the band-type brake nut pressing plates; the upper band-type brake push rod and the lower band-type brake push rod on all be provided with band-type brake guide bar, band-type brake template on be provided with the band-type brake guide holder that corresponds with the band-type brake guide bar, be provided with the uide bushing on the band-type brake guide holder, but the band-type brake guide bar inserts in the uide bushing and up-and-down motion.
The movable mould synchronizing mechanism comprises a gear fixing seat, a first rack, a second rack and a gear, wherein the gear fixing seat is fixedly arranged between the pressurizing template and the band-type brake template, the gear is arranged in the gear fixing seat, the first rack and the second rack are respectively arranged on the pressurizing template and the band-type brake template through rack fixing plates, and the first rack and the second rack are simultaneously meshed with the gear and pass through the gear fixing seat to perform opposite or opposite synchronous movement.
The rack fixing plate is an adjustable rack fixing plate, and the hole for installing the gear on the rack fixing plate is a bar-shaped hole; the gear fixing seat is composed of a base and a gear gland arranged on the base, an installation cavity is formed between the base and the gear gland, a gear shaft is arranged in the installation cavity, the gear is arranged on the gear shaft through a bearing, the installation cavity is divided into an upper cavity and a lower cavity by the gear, one ends of a first rack and a second rack are respectively fixed on a pressurizing template and a band-type brake template, the other ends of the first rack and the second rack respectively penetrate through the upper cavity and the lower cavity and do relative or opposite synchronous movement, and the first rack and the second rack are arranged in parallel and are meshed with the gear simultaneously.
The beneficial effects of the invention are as follows: (1) The injection mechanism directly injects raw materials from the middle hot half die, so that the risk of material leakage is avoided, the deviation of clamping force at two sides of the die is avoided, and the risk of material leakage generated when the die is opened is avoided; (2) The left band-type brake linkage block and the right band-type brake linkage block which are symmetrically distributed are arranged on the template, an upper band-type brake nut and a lower band-type brake nut on the left band-type brake linkage block are in two-point linkage, an upper band-type brake nut and a lower band-type brake nut on the right band-type brake linkage block are in two-point linkage, the left band-type brake linkage block and the right band-type brake linkage block are linked through band-type brake linkage, four-point linkage is realized, the band-type brakes are opened in place simultaneously, action time is saved, and operation efficiency is improved; the first connecting rod, the second connecting rod and the swinging part are used for realizing linkage between the lower brake block and the upper brake block II of the upper brake nut and the lower brake nut, so that the action is more stable, the mechanism efficiency is higher, and the service life of the equipment is prolonged; (3) The mutual movement of the two movable templates is ensured by the mutual movement of the two racks and the gears, the movement is stable and reliable, the action stability of the injection molding machine is improved, meanwhile, the gear fixing seat is positioned between the two movable templates, the consistent stroke of the two movable templates is ensured, the production efficiency of the split-type injection molding machine is improved, and the movement mode of the split-type injection molding machine is optimized; (4) And the universal ejection device can be installed on the two side templates, so that the design and manufacturing difficulty of the die are reduced, and the application range is wider.
Drawings
FIG. 1 is a schematic view of the structure of the present invention when the mold is closed;
FIG. 2 is a schematic view of the structure of the present invention when the mold is opened;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic diagram of the band-type brake mechanism of the present invention;
FIG. 5 is a side view of the band brake mechanism of the present invention;
FIG. 6 is a schematic diagram of the installation of the upper band brake push rod and band brake guide holder of the present invention;
FIG. 7 is a schematic view of the structure of the swing member of the present invention;
FIG. 8 is a schematic diagram of a shifting formwork synchronizing mechanism according to the present invention;
fig. 9 is a cross-sectional view taken along the direction A-A in fig. 8.
In the figure, a 1-rack, a 2-pressurizing cylinder, a 3-pressurizing template, a 4-piston rod, a 5-band-type brake template, a 6-band-type brake mechanism, a 7-shifting cylinder, an 8-mold, a 9-mold base, a 10-shifting synchronous mechanism, an 11-injection mechanism, a 12-product cavity, an 8.1-hot half mold, an 8.2-cold half mold, a 6 a-left band-type brake linkage block, a 6 b-right band-type brake linkage block, a 61-upper band-type brake nut, a 62-lower band-type brake nut, a 63-linkage assembly, 611-upper-type brake block I, 612-lower-type brake block I, 621-upper-type brake block II, 622-lower-type brake block II, 631-first connecting rod, 632-second connecting rod, 633-swinging part, 6 c-upper band-type brake push rod, 6 d-lower-type brake push rod, 6 e-type brake cylinder, 6 f-type brake nut pressing plate, 64-type brake guide bar, 65-type brake guide seat, 66-guide sleeve, 633.1-balancing bar support bar, 633.2-supporting bar, 633.3-supporting bar, 62-102-rack gear, 102-rack bearing, 102-108-supporting bar, rack and rack-supporting bar, and rack-mount-type support, and rack-mount-type brake, and rack-mount-type support, and the rack-mount, and the rack-and the rack and the base are mounted.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1 and 2, the special injection molding machine for stacking the mold for injecting the middle of the split mold comprises a frame 1, a mold 8, a pressurizing cylinder group, a pressurizing mold plate 3, a band-type brake mold plate 5, a band-type brake mechanism 6, a mold moving cylinder 7, a mold base 9 and an injection mechanism 11;
the pressurizing template 3 and the band-type brake template 5 are vertically arranged on the frame 1, the pressurizing oil cylinder group consists of a plurality of pressurizing oil cylinders 2, the pressurizing oil cylinders 2 are fixed on the pressurizing template 3, the band-type brake mechanism 6 is fixed on the band-type brake template 5, and a piston rod 4 of the pressurizing oil cylinder 2 extends through the pressurizing template 3 and the band-type brake template 5 during mold locking and realizes mold locking through the band-type brake mechanism 6;
the mold 8 consists of a hot half mold 8.1 and cold half molds 8.2 which are positioned on two sides of the hot half mold 8.1 and used as lamination molds, a product cavity 12 is arranged between the hot half mold 8.1 and the two cold half molds 8.2, the hot half mold 8.1 is fixed on the frame 1 through a mold base 9, and the two cold half molds 8.2 are respectively fixed on the pressurizing mold plate 3 and the band-type brake mold plate 5;
the movable mold cylinder 7 is arranged on the band-type brake template 5, a piston rod of the movable mold cylinder is connected with the pressurizing template 3, the movable mold cylinder 7 drives the pressurizing template 3 and the band-type brake template 5 to perform linear mold opening and closing movement on the frame 1, a movable mold synchronizing mechanism 10 is arranged between the pressurizing template 3 and the band-type brake template 5, the pressurizing template 3 and the band-type brake template 5 realize synchronous action through the movable mold synchronizing mechanism 10, as shown in fig. 3, an injection mechanism 11 is arranged on one side of a hot half mold 8.1, the injection mechanism 11 can be perpendicular to the hot half mold 8.1 or can be obliquely arranged at a certain angle with the hot half mold 8.1, an injection hole corresponding to the injection mechanism 11 is formed in the hot half mold 8.1, a runner corresponding to a product cavity 12 is formed in the hot half mold 8.1, and the injection mechanism 11 plasticizes a plastic raw material into a molten state and injects the plastic raw material into the hot half mold 8.1.
The pressurizing template 3 and the band-type brake template 5 are parallel to each other and are perpendicular to the frame 1.
The frame 1 on be provided with the linear guide rail that is used for pressurization template 3 and band-type brake template 5 action, pressurization template 3 and band-type brake template 5's bottom be provided with linear guide rail complex slider.
The number of the mould-moving cylinders 7 is two, and the mould-moving cylinders are arranged on the band-type brake template 5 in a diagonal mode.
The pressurizing template 3 and the band-type brake template 5 move relatively or oppositely, and the moving direction of the movable template 106 is consistent with the moving direction of the rack arranged on the movable template.
The supercharging oil cylinder group consists of 4 supercharging oil cylinders 2 symmetrically arranged on a supercharging template 3, and the band-type brake mechanism 6 is a four-point linkage split band-type brake mechanism.
The injection mechanism 11 is a device commonly used on injection molding machines for plasticizing a plastic material into a molten state and injecting it into the hot half 8.1 to form a plastic article.
The band-type brake mechanism 6 is a four-point linkage split-type band-type brake mechanism and comprises a band-type brake assembly and a band-type brake linkage assembly;
as shown in fig. 4 and 5, the band-type brake assembly is composed of a left band-type brake linkage block 6a and a right band-type brake linkage block 6b which are symmetrically installed on the band-type brake template 5, the left band-type brake linkage block 6a and the right band-type brake linkage block 6b are composed of an upper band-type brake nut 61, a lower band-type brake nut 62 and a linkage assembly 63, the upper band-type brake nut 61 and the lower band-type brake nut 62 are movably installed on the band-type brake template 5, the upper band-type brake nut 61 is composed of an upper brake block I611 and a lower brake block I612, the lower band-type brake nut 62 is composed of an upper brake block II621 and a lower brake block II622, the upper brake block I611 and the lower brake block I612 and the lower brake block II621 can be oppositely opened and closed, the linkage assembly 63 comprises a first connecting rod 631, a second connecting rod 632 and a swinging member 633, the upper brake block I and the lower brake block II622 are connected through the first connecting rod 631, and the lower brake block I612 are connected through the second connecting rod 621 and the swinging member 633, and the upper brake block II are connected through the upper connecting member 621 and the upper brake block II;
the band-type brake nut pressing plate 6f is provided with sliding grooves for the upper brake block I611, the lower brake block I612, the upper brake block II621 and the lower brake block II622 to move vertically and oppositely, and the upper brake block I611, the lower brake block I612, the upper brake block II621 and the lower brake block II622 are provided with sliding blocks matched with the sliding grooves.
The upper band-type brake nuts 61 of the left band-type brake linkage block 6a and the right band-type brake linkage block 6b are positioned on the same horizontal line, the lower band-type brake nuts 62 of the left band-type brake linkage block 6a and the right band-type brake linkage block 6b are positioned on the same horizontal line, and the balance bar supports 633.1 of the left band-type brake linkage block 6a and the right band-type brake linkage block 6b are positioned on the same horizontal line.
As shown in fig. 6, the band-type brake linkage assembly is composed of an upper band-type brake push rod 6c, a lower band-type brake push rod 6d and a band-type brake oil cylinder 6e, the upper band-type brake push rod 6c and the lower band-type brake push rod 6d are arranged in parallel, one end of the upper band-type brake push rod 6c is fixed on an upper brake block I611 of the left band-type brake linkage block 6a, the other end of the upper band-type brake push rod 6c is fixed on an upper brake block I611 of the right band-type brake linkage block 6b, one end of the lower band-type brake push rod 6d is fixed on a lower brake block II622 of the left band-type brake linkage block 6a, the other end of the lower band-type brake push rod is fixed on a band-type brake template 5, and a piston rod end of the lower band-type brake push rod 6d is connected with the lower band-type brake push rod 6d to drive the lower band-type brake push rod 6d to move up and down.
As shown in fig. 7, the swinging member 633 preferably includes a balance bar support 633.1, a balance bar 633.2, a support bar 633.3, and a support bar seat 633.4, where the number of the support bar 633.3 and the support bar seat 633.4 is two, the balance bar support 633.1 is installed on the band-type brake module 1 and located between the lower brake block I212 and the upper brake block II221, the balance bar 633.2 is rotatably installed on the balance bar support 633.1 and can swing left and right, the balance bar 633.2 is symmetrically provided with two connection parts, the two support bar seats 633.4 are installed on the lower brake block I212 and the upper brake block II221 respectively, one ends of the two support bars 633.3 are connected with the connection parts of the balance bar 633.2, the other ends of the two support bars 633.3 are hinged to the support bar seats 633.4 of the lower brake block I212 and the upper brake block II221 respectively, the balance bar support 633.1 is located between the lower brake block I612 and the upper brake block II621, and the distance from the balance bar support 633.1 to the lower brake block I612 is equal to the distance from the balance bar support post 633.1 to the upper brake block II 621.
The number of the first connecting rod 631 and the second connecting rod 632 is at least one, so that the stability of the first connecting rod 631 and the second connecting rod 632 when driving corresponding components is ensured.
Preferably, the band-type brake guide seat 65 corresponding to the upper band-type brake push rod 6c is located below the upper band-type brake push rod 6c, and the band-type brake guide seat 65 corresponding to the lower band-type brake push rod 6d is located above the lower band-type brake push rod 6d, so that the band-type brake guide rod 64 is ensured to be always operated in the guide sleeve 66, and the operation stability is improved.
The upper band-type brake nut 61 and the lower band-type brake nut 62 are respectively arranged on the band-type brake template 6 through a band-type brake nut pressing plate 6f, and an up-down kinematic pair is arranged between the upper band-type brake nut 61 and the band-type brake nut pressing plate 6f and between the lower band-type brake nut 62 and the band-type brake nut pressing plate 6 f; the upper band-type brake push rod 6c and the lower band-type brake push rod 6d are respectively provided with a band-type brake guide rod 64, the band-type brake template 5 is provided with a band-type brake guide seat 65 corresponding to the band-type brake guide rod 64, the band-type brake guide seat 65 is provided with a guide sleeve 66, and the band-type brake guide rod 64 is inserted into the guide sleeve 66 and can move up and down.
When the band-type brake is started, the band-type brake cylinder 6e drives the lower band-type brake push rod 6d to move up and down, the lower band-type brake push rod 6d is fixed on the lower brake block II622 of the left band-type brake linkage block 6a and the right band-type brake linkage block 6b, the lower brake block II622 of the left band-type brake linkage block 6a and the lower brake block II622 of the right band-type brake linkage block 6b are driven to respectively drive the lower brake block I612 to act (due to the connection of the second connecting rod 632), the lower brake block I612 is driven to drive the upper brake block II621 to act (due to the connection of the swinging part 633), the upper brake block II621 is driven to act to drive the upper brake block I611 to act (due to the connection of the first connecting rod 631), four points of the upper brake block I611 are driven to act, four points of brake nuts are accordingly achieved, the band-type brake and the mould is opened simultaneously, the synchronism of four band-type brake points is improved, the operation is more stable, and the requirement of the mould injection molding operation is improved, and the synchronous operation requirement of the folding injection molding machine is especially applied to the folding operation.
As shown in fig. 8 and 9, the mold shifting synchronization mechanism 10 includes a gear fixing seat 102, a first rack 103, a second rack 104 and a gear 105, the gear fixing seat 102 is fixedly installed between the pressurizing mold plate 3 and the band-type brake mold plate 5, the gear 105 is installed in the gear fixing seat 102, the first rack 103 and the second rack 104 are respectively installed on the pressurizing mold plate 3 and the band-type brake mold plate 5 through a rack fixing plate 107, and the first rack 103 and the second rack 104 are simultaneously meshed with the gear 105 and pass through the gear fixing seat 102 to perform opposite or opposite synchronous movement.
The rack fixing plate 107 is an adjustable rack fixing plate, and a hole for installing a gear on the rack fixing plate 107 is a bar-shaped hole; the gear fixing seat 102 consists of a base 201 and a gear gland 202 arranged on the base 201, an installation cavity 203 is arranged between the base 201 and the gear gland 202, a gear shaft 108 is arranged in the installation cavity 203, a gear 105 is arranged on the gear shaft 108 through a bearing 101, the installation cavity 203 is divided into an upper cavity 204 and a lower cavity 205 by the gear 105, one ends of a first rack 103 and a second rack 104 are respectively fixed on the pressurizing formwork 3 and the band-type brake formwork 5, the other ends of the first rack 103 and the second rack 104 respectively penetrate through the upper cavity 204 and the lower cavity 205 and do opposite or opposite synchronous movement, the first rack 103 and the second rack 104 are arranged in parallel and are simultaneously meshed with the gear 105, and a cavity is formed between the gear gland 202 and the base 201, so that the gear 105 can be prevented from falling off in the moving process, and the first rack 103 and the second rack 104 are prevented from falling off.
Preferably, the bearing 101 is a needle bearing.
When the pressurizing template 3 and the band-type brake template 5 move in opposite directions or relatively, once the tendency of unsynchronized movement exists, one side with faster movement pushes the gear 105 through the rack fixed with the side with faster movement, and force is transmitted to the rack on the other side through the gear 105, so that synchronous movement of the pressurizing template 3 and the band-type brake template 5 is ensured.
It can be seen that the existing mold locking mechanism of the stack injection molding machine is provided with a fixed mold plate and a movable mold plate, one of the two cold mold halves is fixed on the fixed mold plate of the injection molding machine, the other cold mold half is fixed on the movable mold plate of the injection molding machine to perform mold opening and closing movement, and the hot mold half of the mold is pushed to move at a speed (usually at a half speed) smaller than that of the movable mold plate by a synchronous mechanism fixed on the mold so as to ensure that the two mold halves are simultaneously closed. The molten plastic is transferred to the hot mold half through the cold mold half on the stationary side and then injected into the cavities on both sides to form the plastic article. Therefore, when the mold is opened, a sealing device is needed to prevent leakage, the manufacturing difficulty is increased, the leakage risk always exists, and the use reliability is affected. And when the mold is locked, an extra contact force is needed to ensure the tightness between the fixed cold half mold and the hot half mold, which counteracts a part of mold locking force to influence the consistency of the mold locking force at two sides of the mold, and a larger mold locking force is needed to ensure smooth molding. The injection mechanism directly injects raw materials from the middle hot half die, so that the risk of material leakage is avoided, and the deviation of die locking forces at two sides of the die is avoided.
Meanwhile, when the existing stack-mold injection molding machine performs mold opening and closing movement, the moving part always moves towards one direction, and when the mold opening and closing movement is performed, the two half molds always move relatively, the stress is mutually counteracted, the impact force is not transmitted to the frame, and the machine runs faster and more stably.
In addition, since the cold half die on one side of the stack injection molding machine is fixed on the fixed die plate of the injection molding machine, and the injection mechanism performs injection from the fixed side, the space of the ejection device is occupied, so that the ejection device (for taking out the molded plastic product) of the existing stack injection molding machine needs to be integrated on the die, the die structure is complicated, and some products cannot be produced in a stack mode. The universal ejection device can be installed on the templates on two sides of the invention, thereby reducing the design and manufacturing difficulties of the die and having wider application range.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (8)
1. An injection molding machine special for stacking molds for injecting the middle of a mold plate in a split mold comprises a frame (1) and a mold (8), and is characterized in that,
the automatic mold comprises a mold base, a mold base (9) and an injection mechanism (11), and is characterized by further comprising a pressurizing oil cylinder group, a pressurizing template (3), a band-type brake template (5), a band-type brake mechanism (6), a mold shifting oil cylinder (7);
the pressurizing template (3) and the band-type brake template (5) are vertically arranged on the frame (1), the pressurizing oil cylinder group consists of a plurality of pressurizing oil cylinders (2), the pressurizing oil cylinders (2) are fixed on the pressurizing template (3), the band-type brake mechanism (6) is fixed on the band-type brake template (5), and a piston rod (4) of the pressurizing oil cylinders (2) extends through the pressurizing template (3) and the band-type brake template (5) during mold locking and realizes mold locking through the band-type brake mechanism (6);
the mold (8) consists of a hot half mold (8.1) and cold half molds (8.2) which are positioned at two sides of the hot half mold (8.1) and used for being made into a laminated mold, a product cavity (12) is formed between the hot half mold (8.1) and the two cold half molds (8.2), the hot half mold (8.1) is fixed on the frame (1) through a mold base (9), and the two cold half molds (8.2) are respectively fixed on the pressurizing mold plate (3) and the band-type brake mold plate (5);
the mold shifting oil cylinder (7) is arranged on the band-type brake template (5), a piston rod of the mold shifting oil cylinder is connected with the pressurizing template (3), the mold shifting oil cylinder (7) drives the pressurizing template (3) and the band-type brake template (5) to linearly open and close the mold on the frame (1), a mold shifting synchronization mechanism (10) is arranged between the pressurizing template (3) and the band-type brake template (5), the pressurizing template (3) and the band-type brake template (5) realize synchronous action through the mold shifting synchronization mechanism (10), the injection mechanism (11) is arranged on one side of the hot half mold (8.1), an injection hole corresponding to the injection mechanism (11) is arranged on the hot half mold (8.1), a pouring gate corresponding to the product cavity (12) is arranged on the hot half mold (8.1), and the injection mechanism (11) plasticizes the plastic raw material into a molten state and injects the molten state into the hot half mold (8.1);
the pressurizing oil cylinder group consists of 4 pressurizing oil cylinders (2) symmetrically arranged on the pressurizing template (3), and the band-type brake mechanism (6) is a four-point linkage split-type band-type brake mechanism;
the band-type brake mechanism (6) is a four-point linkage split-type band-type brake mechanism and comprises a band-type brake assembly and a band-type brake linkage assembly;
the band-type brake assembly consists of a left band-type brake linkage block (6 a) and a right band-type brake linkage block (6 b) which are symmetrically arranged on a band-type brake template (5), wherein the left band-type brake linkage block (6 a) and the right band-type brake linkage block (6 b) are respectively composed of an upper band-type brake nut (61), a lower band-type brake nut (62) and a linkage assembly (63), the upper band-type brake nut (61) and the lower band-type brake nut (62) are movably arranged on the band-type brake template (5), the upper band-type brake nut (61) is composed of an upper brake block I (611) and a lower brake block I (612), the lower band-type brake nut (62) is composed of an upper brake block II (621) and a lower brake block II (622), the upper brake block II (621) and the lower brake block II (622) can be simultaneously subjected to upper opposite opening actions, the upper brake assembly (63) comprises a first connecting rod (631), a second connecting rod (633) and a swinging part (633) and the upper brake block I (621) and the lower brake block I (622), and the upper brake block I (621) are connected through the upper brake block (621) and the lower brake block (612) and the upper brake block (621) respectively;
the band-type brake linkage assembly comprises an upper band-type brake push rod (6 c), a lower band-type brake push rod (6 d) and a band-type brake oil cylinder (6 e), wherein the upper band-type brake push rod (6 c) and the lower band-type brake push rod (6 d) are arranged in parallel, one end of the upper band-type brake push rod (6 c) is fixed on an upper brake block I (611) of a left band-type brake linkage block (6 a), the other end of the lower band-type brake push rod (6 d) is fixed on an upper brake block I (611) of a right band-type brake linkage block (6 b), one end of the lower band-type brake push rod (6 d) is fixed on a lower brake block II (622) of a left band-type brake linkage block (6 a), the other end of the lower band-type brake push rod is fixed on a right band-type brake linkage block (6 e), and a piston rod end of the lower band-type brake oil cylinder (6 e) is connected with any one of the upper band-type brake push rod (6 c) and the lower band-type brake push rod (6 d) to drive the upper band-type brake push rod (6 c) to move up and down.
2. The injection molding machine special for stacking mold for middle injection of mold plate split mold according to claim 1, wherein,
the pressurizing template (3) and the band-type brake template (5) are mutually parallel and are arranged in a mode of being perpendicular to the frame (1).
3. The injection molding machine special for stacking mold for middle injection of mold plate split mold according to claim 1, wherein,
the automatic brake is characterized in that a linear guide rail used for the action of the pressurizing template (3) and the brake template (5) is arranged on the frame (1), and sliding blocks matched with the linear guide rail are arranged at the bottoms of the pressurizing template (3) and the brake template (5).
4. The injection molding machine special for stacking mold for middle injection of mold plate split mold according to claim 1, wherein,
the number of the movable mould cylinders (7) is two, and the movable mould cylinders are arranged on the band-type brake template (5) in a diagonal manner.
5. The injection molding machine special for stacking mold for middle injection of mold plate split mold according to claim 1, wherein,
the pressurizing template (3) and the band-type brake template (5) move relatively or oppositely, and the moving direction of the movable template (106) is consistent with the moving direction of a rack arranged on the movable template.
6. The injection molding machine special for stacking mold for middle injection of mold plate split mold according to claim 1, wherein,
the upper band-type brake nut (61) and the lower band-type brake nut (62) are arranged on the band-type brake template (6) through band-type brake nut pressing plates (6 f), and an up-down kinematic pair is arranged between the upper band-type brake nut (61) and the band-type brake nut pressing plates (6 f) and between the lower band-type brake nut (62) and the band-type brake nut pressing plates (6 f); the band-type brake is characterized in that band-type brake push rods (6 c) and lower band-type brake push rods (6 d) are respectively provided with a band-type brake guide rod (64), band-type brake templates (5) are provided with band-type brake guide bases (65) corresponding to the band-type brake guide rods (64), guide sleeves (66) are arranged on the band-type brake guide bases (65), and the band-type brake guide rods (64) are inserted into the guide sleeves (66) and can move up and down.
7. The injection molding machine special for stacking mold for middle injection of mold plate split mold according to claim 1, wherein,
the movable mould synchronizing mechanism (10) comprises a gear fixing seat (102), a first rack (103), a second rack (104) and a gear (105), wherein the gear fixing seat (102) is fixedly arranged between the supercharging template (3) and the band-type brake template (5), the gear (105) is arranged in the gear fixing seat (102), the first rack (103) and the second rack (104) are respectively arranged on the supercharging template (3) and the band-type brake template (5) through rack fixing plates (107), and the first rack (103) and the second rack (104) are simultaneously meshed with the gear (105) and pass through the gear fixing seat (102) to do opposite or opposite synchronous movement.
8. The injection molding machine special for stacking mold for mold plate split mold shifting middle injection according to claim 7, wherein,
the rack fixing plate (107) is an adjustable rack fixing plate, and a hole used for installing a gear on the rack fixing plate (107) is a bar-shaped hole; the gear fixing seat (102) comprises a base (201) and a gear gland (202) arranged on the base (201), an installation cavity (203) is arranged between the base (201) and the gear gland (202), a gear shaft (108) is arranged in the installation cavity (203), a gear (105) is arranged on the gear shaft (108) through a bearing (101), the gear (105) divides the installation cavity (203) into an upper cavity (204) and a lower cavity (205), one ends of a first rack (103) and a second rack (104) are respectively fixed on a pressurizing template (3) and a holding brake template (5), the other ends of the first rack (103) and the second rack (104) respectively penetrate through the upper cavity (204) and the lower cavity (205) and do relative or opposite synchronous movement, and the first rack (103) and the second rack (104) are arranged in parallel and are simultaneously meshed with the gear (105).
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| CN201710853722.5A CN107498777B (en) | 2017-09-20 | 2017-09-20 | Special injection molding machine for stacking mold of middle injection of split mold of template |
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| CN108437346A (en) * | 2018-03-14 | 2018-08-24 | 广东伟达智能装备股份有限公司 | The double mechanical reaming type injection moulding machines of bimodulus |
| CN112519157A (en) * | 2019-09-19 | 2021-03-19 | 苏州立注机械有限公司 | Injection molding machine mode locking device |
| CN112519158A (en) * | 2019-09-19 | 2021-03-19 | 苏州立注机械有限公司 | Injection molding machine clamping cylinder structure |
| CN112519092A (en) * | 2019-09-19 | 2021-03-19 | 苏州立注机械有限公司 | Carousel formula injection molding machine with mode locking function |
| CN117621354A (en) * | 2023-11-22 | 2024-03-01 | 浙江百隆塑料制品股份有限公司 | Injection mold and injection molding process thereof |
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