CN113997513A - Injection mold with unhairing limit function - Google Patents
Injection mold with unhairing limit function Download PDFInfo
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- CN113997513A CN113997513A CN202111236718.7A CN202111236718A CN113997513A CN 113997513 A CN113997513 A CN 113997513A CN 202111236718 A CN202111236718 A CN 202111236718A CN 113997513 A CN113997513 A CN 113997513A
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- 238000002347 injection Methods 0.000 title claims abstract description 27
- 239000007924 injection Substances 0.000 title claims abstract description 27
- 238000001746 injection moulding Methods 0.000 claims abstract description 133
- 230000007246 mechanism Effects 0.000 claims abstract description 112
- 238000009966 trimming Methods 0.000 claims abstract description 48
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 230000009194 climbing Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 13
- 238000000465 moulding Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/02—Deburring or deflashing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C2045/0077—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping removing burrs or flashes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The application relates to an injection mold with a deburring function, which is applied to the technical field of injection molds and comprises a mold body, wherein the mold body comprises an upper mold, a lower mold, a mold cavity and an injection molding hole, a driving mechanism is arranged on the lower mold, a trimming device is arranged on the mold body, the trimming device comprises a trimming mechanism for cutting off burrs of an injection molding piece, a clamping mechanism for fixing the injection molding piece and a jacking mechanism for ejecting the injection molding piece, the trimming mechanism is arranged on the upper mold in a sliding manner, a connecting rod is connected between the trimming mechanism and the lower mold, the clamping mechanism is connected with the driving mechanism, and the jacking mechanism is positioned in the lower mold; go up the mould and run through and be equipped with the walking hole, when the mould body is in the compound die state, the one end that trimming mechanism is close to the lower mould is located the walking hole, and when the mould body was in the branch mould state, actuating mechanism drive lower mould was towards keeping away from last mould direction and was removed to drive trimming mechanism extends the deckle edge of walking hole excision injection molding. This application has the effect that improves injection molding production efficiency.
Description
Technical Field
The application relates to the technical field of injection molds, in particular to an injection mold with a deburring function.
Background
The injection mold is a mold for molding molten plastic into a specific size and shape in the injection molding process, and is matched with a plastic molding machine for use. Because of the variety and processing method of plastic, and the structure of plastic molding machines and plastic products are also various, the variety and structure of plastic molds are also various.
The injection mould in the related technology comprises an upper mould, an upper mould base connected with the upper mould, a lower mould and a lower mould base connected with the lower mould, wherein an upper mould core is arranged in the upper mould, a lower mould core is arranged in the lower mould, when the upper mould and the lower mould are in a mould closing state, the upper mould core and the lower mould core form a mould cavity for forming an injection moulding piece, and when the upper mould and the lower mould are in a mould opening state, the upper mould core and the lower mould core are separated from each other and the formed injection moulding piece can be taken out; the upper die base is provided with an injection molding hole, and the injection molding hole penetrates through the upper die and is communicated with the upper die core.
Aiming at the related technologies, the inventor thinks that burrs exist at the matched die position of the upper die and the lower die of the injection molding part produced by the injection mold, a separate burr removing procedure is needed subsequently, the whole injection molding process has many steps, and the production time of the whole injection molding part is long and the production efficiency is low.
Disclosure of Invention
In order to improve because of increasing the process of getting rid of the deckle edge of injection molding alone, and the production time that leads to whole injection molding is long, the problem that production efficiency is low, this application provides an injection mold with unhairing limit function.
The application provides a pair of injection mold with unhairing limit function adopts following technical scheme:
an injection mold with a deburring function comprises a mold body, wherein the mold body comprises an upper mold and a lower mold, the upper mold and the lower mold are fixed on a rack, when the mold body is in a mold closing state, a mold cavity is formed between the upper mold and the lower mold, an injection molding hole communicated with the mold cavity is formed in the upper mold, at least one driving mechanism used for driving the lower mold to move away from or close to the upper mold is arranged on the lower mold, a trimming device is arranged on the mold body and comprises a trimming mechanism used for cutting off burrs of an injection molding piece, a clamping mechanism used for fixing the injection molding piece and a jacking mechanism used for ejecting the injection molding piece, the trimming mechanism is arranged on the upper mold in a sliding mode, at least one connecting rod is arranged on the trimming mechanism, one end, far away from the trimming mechanism, of the connecting rod penetrates through the upper mold and is connected with the lower mold, the lower mold drives the trimming mechanism to ascend or descend through the connecting rod, the clamping mechanism is connected with the driving mechanism, and the jacking mechanism is positioned in the lower die; the upper die is located the outer edge of die cavity the die cavity periphery runs through and is equipped with the walking hole, when the mould body is in the compound die state, go up the mould with the lower mould is balanced tightly, trimming mechanism is close to the one end of lower mould is located the walking is downthehole, when the mould body is in the branch mould state, actuating mechanism drive the lower mould is towards keeping away from go up the mould direction and remove, and drive trimming mechanism extends the deckle edge of walking hole excision injection molding.
Through adopting above-mentioned technical scheme, move towards keeping away from last mould direction through actuating mechanism drive lower mould, the ejecting die cavity of rethread climbing mechanism with the injection molding, the realization is to the drawing of patterns of injection molding, simultaneously fixture is fixed with the injection molding after the drawing of patterns, under the effect of connecting rod, the lower mould is towards keeping away from last mould direction and is removed the drive trimming mechanism and remove and extend the deckle edge of walking hole excision injection molding, thereby reducible process of going deckle edge is carried out again after taking out the injection molding, the production steps are simplified, and then reducible production time, the production efficiency who makes the injection molding can improve. In addition, the lower die is driven by the driving mechanism to move towards the direction close to the upper die and abut against the upper die, so that the die body is kept in a die closing state, the plastic in a molten state can be injected into the die cavity through the injection molding hole to produce an injection molding piece by the injection molding machine, and meanwhile, when the lower die moves towards the direction close to the upper die, the trimming mechanism moves along with the lower die and enters the walking hole, so that the trimming mechanism cannot influence the abutting of the lower die on the upper die, and the molding of the injection molding piece is not influenced.
Optionally, the lower die comprises a lower die body and a lower die base, the lower die base is fixed on the frame, a gap is left between the lower die body and the lower die base, one end of the driving mechanism is connected with the lower die base, the other end of the driving mechanism is connected with the lower die base and drives the lower die body to move in a direction away from or close to the upper die, and the connecting rod is connected with the lower die body; one end of the jacking mechanism is connected with the lower die base, and the other end of the jacking mechanism penetrates through the lower die body and is flush with the side face, back to the lower die base, of the lower die body.
By adopting the technical scheme, the lower die base is used for fixing the driving mechanism and the jacking mechanism, the lower die body is driven by the driving mechanism to move towards the direction away from or close to the upper die, and when the lower die body is abutted against the upper die, the injection molding machine can inject molten plastic into the die cavity through the injection molding hole to produce injection molding pieces. After the injection molding is molded, the lower die body is driven by the driving mechanism to move towards the direction far away from the upper die, and the injection molding is demolded by matching with the jacking mechanism.
Optionally, the driving mechanism comprises a mounting frame and a driving assembly arranged on the mounting frame, the mounting frame is fixed on the lower die base, the driving assembly is arranged on the mounting frame and connected with the lower die body, and the clamping mechanism is connected with the mounting frame.
Through adopting above-mentioned technical scheme, the mounting bracket is used for fixed drive assembly and fixture, can drive the lower mould body through drive assembly and move towards keeping away from or being close to last mould direction, makes the mould body realize dividing the mould or compound die. Simultaneously when the lower mould body moves towards the direction of keeping away from last mould, also can cooperate with climbing mechanism and realize the injection molding drawing of patterns.
Optionally, the driving assembly includes a first driving motor, a screw rod, a moving block sleeved on the screw rod, and a connecting frame arranged on the moving block, the first driving motor is installed at one end of the mounting frame far away from the lower die base, the screw rod is arranged in the mounting frame, one end of the screw rod penetrates through the mounting frame and is connected with the first driving motor, and the other end of the screw rod is rotatably connected with the lower die base; the connecting frame is located on one side, facing the lower die body, of the moving block, and one end, far away from the moving block, of the connecting frame is connected with the lower die body.
Through adopting above-mentioned technical scheme, rotate through a driving motor drive screw, the screw rod rotates and makes the movable block can follow the screw rod lift, and the movable block goes up and down to drive the link and goes up and down, and the link goes up and down to drive lower mould body and go up and down to can make the mould body realize compound die or divide the mould, when lower mould body moved towards keeping away from last mould direction simultaneously, also can cooperate with climbing mechanism and realize the injection molding drawing of patterns.
Optionally, fixture includes at least a pair of centre gripping subassembly, the centre gripping subassembly includes electric putter and the splint of being connected with electric putter, electric putter fixes on the mounting bracket, splint support tightly be located the deckle edge of injection molding and the position between the lower mould body at the injection molding.
Through adopting above-mentioned technical scheme, after climbing mechanism demolds the injection molding, the electric putter who starts a pair of centre gripping subassembly makes electric putter promote splint to support tightly on the injection molding, cooperate through a pair of splint to fix the injection molding, carry out the in-process of excision at the deckle edge of trimming mechanism to the injection molding, can reduce the injection molding take place on climbing mechanism crooked or drop and lead to trimming mechanism to cut the injection molding or to the not thorough condition of deckle edge excision.
Optionally, the jacking mechanism includes a plurality of top plates and ejector pins, the top plates and the ejector pins are arranged in one-to-one correspondence, the diameters of the top plates are larger than those of the ejector pins, the top plates are uniformly arranged along the periphery of the mold cavity, a sink groove for the top plates to be fitted and embedded is formed in the lower mold body, the side of the top plate far away from the lower mold base is flush with the side of the lower mold body far away from the lower mold base, the ejector pins are fixedly connected with the lower mold base, and through holes for the ejector pins to fit and pass through are arranged on the lower mold body corresponding to the top plates in a penetrating manner; when the die body is in a die closing state, the ejector pin is not in contact with the top plate, and when the die body is in a die separating state, the ejector pin penetrates through the through hole and is supported on the top plate in an abutting mode.
By adopting the technical scheme, in the process that the driving assembly drives the lower die body to move towards the direction far away from the upper die, the ejector pin penetrates through the through hole to be supported on the top plate, so that the top plate is supported on rough edges of the injection molding part, the lower die body continues to move towards the direction far away from the upper die under the driving of the driving assembly, and the injection molding part is kept still under the supporting of the ejector rod and the top plate, so that the injection molding part can be demoulded. In addition, when the die body is in a die closing state, the top plate is positioned in the sinking groove and is flush with the side surface of the lower die body, back to the lower die base, so that the possibility that the plastic in a molten state flows into the sinking groove can be reduced while the lower die body is not influenced to be tightly propped against the upper die.
Optionally, a supporting groove for the thimble to abut into is formed in one side, facing the thimble, of the top plate, and when the mold body is in the mold splitting state, the thimble abuts against the supporting groove.
Through adopting above-mentioned technical scheme, can make the ejector pin support the roof more steadily through supporting the groove, and then make the roof support the deckle edge of injection molding more steadily to make the injection molding can demould better.
Optionally, the trimming mechanism includes a moving seat, a cutter and a traveling assembly for driving the cutter to move, the moving seat and the traveling assembly are both located on one side of the upper die, which faces away from the lower die body, the moving seat is connected with the traveling assembly, and the connecting rod is connected with the moving seat; the cutting knife is connected with the traveling assembly, when the die body is in a die closing state, one end of the cutting knife, which is far away from the traveling assembly, is located in the traveling hole, and when the die body is in a die separating state, one end of the cutting knife, which is far away from the traveling assembly, extends out of the traveling hole to cut off burrs of the injection molding.
Through adopting above-mentioned technical scheme, remove the seat and be used for installing walking subassembly and move along with the removal of lower mould body under the effect of connecting rod and synchronous movement. When the lower mould body moves towards the direction of keeping away from last mould, move the seat through the connecting rod drive and remove, and then make the cutter extend the walking hole and cut thoroughly the deckle edge by the fixed injection molding of splint centre gripping, rethread walking subassembly drive cutter removes in order to amputate deckle edge along the injection molding periphery to reducible process of taking out the deckle edge of going back again of injection molding has simplified the production process, and then reducible production time, the production efficiency who makes the injection molding can improve. When the lower die body moves towards the direction close to the upper die, the moving seat drives the traveling assembly and the cutter to move, so that the cutter is positioned in the traveling hole to avoid influencing the die assembly of the die body, and the injection molding machine can inject molten plastic into a die cavity through the injection molding hole to produce an injection molding piece.
Optionally, the walking subassembly includes with die cavity shape assorted track, set up the driving on the track and be used for driving motor two that removes, the track with remove the seat and connect just track and every all leave the interval between the connecting rod, the driving is kept away from remove one side of seat with the cutter is connected, driving motor two with the driving is connected.
By adopting the technical scheme, the travelling crane moves along the rail under the driving of the driving motor II, and the travelling crane can drive the cutter to move along the periphery of the injection molding part to remove burrs due to the shape matching of the rail and the mold cavity, so that the process of removing burrs after the injection molding part is taken out can be reduced, the production steps are simplified, the production time can be reduced, and the production efficiency of the injection molding part can be improved.
Optionally, the cutter comprises a handle and a tool bit, a torsion spring for connecting the handle and the tool bit is arranged between the handle and the tool bit, the handle is connected with the travelling crane, and a limiting block for limiting the reset of the torsion spring is arranged on the handle; when the mold body is in a mold closing state, the tool bit is located in the walking hole, the torsion spring is in a semi-torsion state, the tool bit is abutted against the hole wall of the walking hole, and when the mold body is in a mold separating state, the tool bit extends out of the walking hole and is driven by the walking assembly to cut off burrs of the injection molding.
Through adopting above-mentioned technical scheme, the torsional spring can make the tool bit stretch out behind the walking hole and twist reverse towards the injection molding direction to support tightly in the junction of injection molding and deckle edge. The driving vehicle is driven by the driving motor II to move along the guide rail, and the driving vehicle drives the tool shank and the tool bit to synchronously move along the periphery of the injection molding part and cut burrs. Can support the tool bit tightly at the junction of injection molding and deckle edge through the torsional spring to can be more thorough with the deckle edge excision. In addition, the stopper plays and carries out spacing effect to the tool bit, and after the tool bit extended walking hole, the tool bit was at the upset of handle of a knife orientation under the effect of torsional spring, and the upset that stops after conflicting the stopper makes supporting that the tool bit can be accurate tightly at injection molding and unedged junction to reduce the possibility that the tool bit contradicted the damage injection molding on the injection molding.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the lower die is driven by the driving mechanism to move towards the direction far away from the upper die, the injection molding piece is ejected out of the die cavity by the jacking mechanism, so that the injection molding piece is demoulded, meanwhile, the injection molding piece after demoulding is fixed by the clamping mechanism, and under the action of the connecting rod, the lower die moves towards the direction far away from the upper die to drive the trimming mechanism to move and extend out the walking hole to cut off burrs of the injection molding piece, so that the process of removing burrs after the injection molding piece is taken out can be reduced, the production steps are simplified, the production time can be reduced, and the production efficiency of the injection molding piece can be improved;
2. the travelling crane moves along the rail under the driving of the driving motor II, and the travelling crane can drive the cutter to move along the periphery of the injection molding part to cut burrs due to the matching of the shape of the rail and the shape of the mold cavity;
3 can support the tool bit tightly in injection molding and unedged junction through the torsional spring, two drive driving of restart driving motor remove along the guide rail, and the driving drives handle of a knife and tool bit along injection molding periphery synchronous motion and excision deckle edge, can more thoroughly excise deckle edge.
Drawings
Fig. 1 is a schematic view of an injection mold having a deburring function in an embodiment of the present application.
Fig. 2 is a schematic view of the trimming mechanism in the embodiment of the present application.
FIG. 3 is a schematic diagram of a jacking mechanism in an embodiment of the present application.
Fig. 4 is a cross-sectional view of a jacking mechanism in an embodiment of the present application.
Fig. 5 is a schematic view of a clamping mechanism in an embodiment of the present application.
Fig. 6 is an enlarged view of a portion a in fig. 2.
Fig. 7 is an enlarged view of a portion B in fig. 2.
Reference numerals: 1. a mold body; 101. a mold cavity; 11. an upper die; 111. injection molding holes; 112. a walking hole; 12. a lower die; 121. a lower die body; 1211. sinking a groove; 1212. a through hole; 122. a lower die base; 2. a frame; 3. a drive mechanism; 31. a mounting frame; 32. a drive assembly; 321. driving a motor I; 322. a screw; 323. a moving block; 324. a connecting frame; 4. a trimming device; 41. a trimming mechanism; 411. a movable seat; 412. a cutter; 4121. a knife handle; 4122. a cutter head; 413. a walking assembly; 4131. a track; 4132. driving a vehicle; 4133. a second driving motor; 42. a clamping mechanism; 421. an electric push rod; 422. a splint; 43. a jacking mechanism; 431. a top plate; 4311. a propping groove; 432. a thimble; 5. a connecting rod; 6. a torsion spring; 7. and a limiting block.
Detailed Description
The present application is described in further detail below with reference to figures 1-7.
The embodiment of the application discloses injection mold with unhairing limit function.
Referring to fig. 1 and 2, an injection mold with unhairing limit function, including mould body 1, mould body 1 includes mould 11 and lower mould 12, goes up mould 11 and is located the top of lower mould 12 and goes up mould 11 and lower mould 12 and all fix on frame 2, when mould body 1 is in the compound die state, goes up and forms the die cavity 101 that is used for the shaping injection molding between mould 11 and the lower mould 12, upward is equipped with the injection molding hole 111 with die cavity 101 intercommunication on mould 11, and the injection molding machine produces the injection molding through injection molding hole 111 with the plastics injection of molten state in die cavity 101.
The lower die 12 is composed of a lower die body 121 and a lower die base 122, the lower die body 121 is located above the lower die base 122, a space is reserved between the lower die 12 and the lower die base 122, the lower die base 122 is fixed on the frame 2, and at least one driving mechanism 3 for driving the lower die body 121 to move towards the direction away from or close to the upper die 11 is installed on the lower die base 122. In this embodiment, taking the number of the driving mechanisms 3 as two as an example, one of the driving mechanisms 3 is located on one side of the lower die body 121, the other driving mechanism 3 is located on the other side of the lower die body 121, and the two driving mechanisms 3 are symmetrically arranged, so that the lower die body 121 can be driven to move in a direction away from or close to the upper die 11 more smoothly.
Referring to fig. 1 and 2, the die body 1 is provided with a trimming device 4, the trimming device 4 is composed of a trimming mechanism 41 for cutting off burrs of the injection molding part, a clamping mechanism 42 for fixing the injection molding part and a jacking mechanism 43 for ejecting the injection molding part, the trimming mechanism 41 is slidably arranged on the upper die 11, the clamping mechanism 42 is connected with the driving mechanism 3, and the jacking mechanism 43 is positioned in the lower die 12. At least one connecting rod 5 is arranged between the trimming mechanism 41 and the lower die body 121, one end of the connecting rod 5 is connected with the trimming mechanism 41, and the other end of the connecting rod 5 vertically penetrates through the upper die 11 to be connected with the lower die body 121. In this embodiment, the number of the connecting rods 5 is four, the four connecting rods 5 are uniformly distributed on the lower die body 121, and the lower die body 121 can drive the trimming mechanism 41 to synchronously lift through the connecting rods 5.
Referring to fig. 1 and 2, the upper mold 11 is located outside the cavity 101, and a walking hole 112 is formed through the periphery of the cavity 101, and portions of the upper mold 11 located on both sides of the walking hole 112 are connected. The lower die body 121 is driven by the driving mechanism 3 to move towards the direction far away from the upper die 11, the jacking mechanism 43 pushes the injection molding part out of the die cavity 101 in the moving process of the lower die body 121, the injection molding part is demolded, and the demolded injection molding part is fixed through the clamping mechanism 42. Under the effect of connecting rod 5, lower mould 12 moves towards keeping away from last mould 11 direction and drives trimming mechanism 41 and remove and stretch out walking hole 112 and excise the deckle edge of injection molding to reducible process of taking out the deckle edge of going again after the injection molding has been simplified production processes, and then reducible production time makes the production efficiency of injection molding can improve.
In addition, the driving mechanism 3 drives the lower die body 121 to move towards the direction close to the upper die 11 and abut against the upper die 11, so that the die body 1 maintains a die closing state, the injection molding machine can inject the plastic in a molten state into the die cavity 101 through the injection molding hole 111 to produce an injection molding piece, and meanwhile, when the lower die body 121 moves towards the direction close to the upper die 11, the trimming mechanism 41 moves along with the lower die body 121 and enters the walking hole 112, so that the trimming mechanism 41 does not influence the abutting of the lower die body 121 on the upper die 11, and the molding of the injection molding piece is not influenced.
Referring to fig. 1 and 2, the driving mechanism 3 is composed of a mounting frame 31 and a driving assembly 32, the driving assembly 32 includes a first driving motor 321, a screw rod 322, a moving block 323 sleeved on the screw rod 322 and a connecting frame 324 connected to the moving block 323, the mounting frame 31 is fixed on the lower mold base 122, the first driving motor 321 is installed on one side of the mounting frame 31 far away from the lower mold base 122, the screw rod 322 is located in the mounting frame 31 and penetrates through the mounting frame 31 to be connected with the first driving motor 321, and one end of the screw rod 322 far away from the first driving motor 321 is rotatably connected with the lower mold base 122. One end of the connecting frame 324 is fixedly connected to one side of the moving block 323 facing the lower die body 121, and the other end of the connecting frame 324 is fixedly connected to the lower die body 121. The screw rod 322 is driven to rotate through the first driving motor 321, the screw rod 322 rotates to enable the moving block 323 to ascend and descend along the screw rod 322, the moving block 323 ascends and descends to drive the connecting frame 324 to ascend and descend, the connecting frame 324 ascends and descends to drive the lower die body 121 to ascend and descend, accordingly, the die body 1 can be matched or separated, meanwhile, one end, close to the lower die body 121, of the trimming mechanism 41 can be driven to extend out of the walking hole 112 to cut off burrs of an injection molding piece, or one end, close to the lower die body 121, of the trimming mechanism 41 is driven to enter the walking hole 112 so as not to influence production of the injection molding piece.
Referring to fig. 3 and 4, the jacking mechanism 43 includes a plurality of top plates 431 and thimbles 432, the top plates 431 and the thimbles 432 are coaxially disposed in a one-to-one correspondence, and in this embodiment, the number of the top plates 431 and the thimbles 432 is four as an example. The top plates 431 are uniformly arranged along the periphery of the cavity 101, and the lower die body 121 is provided with a sunk groove 1211 for the top plates 431 to be matched and embedded. When the mold body 1 is in the mold closing state, the top surface of the top plate 431 is flush with the top surface of the lower mold body 121, so that the lower mold body 121 is not influenced to be tightly abutted against the upper mold 11, and the possibility that the plastic in the molten state flows into the sinking groove 1211 can be reduced. The thimble 432 is fixedly connected with the lower die base 122, a through hole 1212 for the thimble 432 to pass through in a vertical penetrating manner is arranged on the lower die 12 corresponding to the position of the top plate 431, a support groove 4311 for the thimble 432 to support is arranged on the side surface of the top plate 431 facing the lower die body 121, when the driving component 32 drives the lower die body 121 to descend until the injection molding is completely separated from the upper die 11, the thimble 432 penetrates through the through hole 1212 and supports in the support groove 4311, the driving component 32 continues to drive the lower die body 121 to descend, at this time, the top plate 431 supports on burrs to keep the injection molding still until the injection molding is completely separated from the lower die body 121, and therefore, the demolding of the injection molding is realized.
In addition, in this embodiment, the top plate 431 and the thimble 432 are both cylindrical, and the diameter of the top plate 431 is greater than that of the thimble 432, so that the thimble 432 can be more stably supported on the burrs through the top plate 431.
Referring to fig. 2 and 5, the clamping mechanism 42 includes at least one pair of clamping assemblies, and in the present embodiment, the number of the clamping assemblies is taken as an example. The centre gripping subassembly comprises electric putter 421 and splint 422, the motor of electric putter 421 is installed on the side of mounting bracket 31 towards lower mould base 122, splint 422 fixes the one end of keeping away from the motor of electric putter 421 at the push rod of electric putter 421, after the injection molding is demoulded completely, start the motor of a pair of electric putter 421 and make the push rod of electric putter 421 promote splint 422 and support tightly on the injection molding is located the position between lower mould body 121 and the burr, it is fixed with the injection molding through a pair of splint 422, thereby reducible trimming mechanism 41 takes place the condition that skews or drops on roof 431 to the injection molding in-process that carries out the excision to the deckle edge of injection molding, and then can improve trimming mechanism 41 to the excision effect of deckle edge.
Referring to fig. 2 and 6, the trimming mechanism 41 comprises a moving seat 411, a cutter 412 and a traveling component 413, the cutter 412 comprises a cutter handle 4121 and a cutter head 4122, and a torsion spring 6 for connecting the cutter handle 4121 and the cutter head 4122 is arranged between the cutter handle 4121 and the cutter head 4122. The traveling assembly 413 is fixed on the side of the moving seat 411 facing the upper die 11, the moving seat 411 and the traveling assembly 413 are both located above the upper die 11, the moving seat 411 is connected with the connecting rod 5, so that the moving seat 411 can be driven by the connecting rod 5 to ascend and descend along with the die body 121, and the moving seat 411 can drive the traveling assembly 413 to ascend and descend.
The traveling assembly 413 comprises a rail 4131, a traveling crane 4132 arranged on the rail 4131 and a driving motor two 4133 used for driving the traveling crane 4132 to move, the rail 4131 is fixed on the moving seat 411, the driving motor two 4133 is connected with the traveling crane 4132, the knife handle 4121 is connected to one side of the traveling crane 4132, which is back to the moving seat 411, and when the mold body 1 is in a mold closing state, the knife head 4122 is located in the traveling hole 112 and abuts against the hole wall of the traveling hole 112. When the lower die body 121 moves towards the direction away from the upper die 11, the connecting rod 5 drives the moving seat 411 to move downwards, the moving seat 411 drives the rail 4131, the travelling crane 4132 and the cutter 412 to move downwards, so that the tool bit 4122 extends out of the travelling hole 112 and abuts against the connection part of the injection molding piece and the burrs under the action of the torsion spring 6. And starting a second driving motor 4133 to drive the travelling crane 4132 to move along the rail 4131, and driving the tool holder 4121 and the tool bit 4122 to move along the periphery of the injection molding part by moving the travelling crane 4132, and simultaneously cutting off burrs by the tool bit 4122. Therefore, the process of deburring after the injection molding piece is taken out can be reduced, the production steps are simplified, the production time can be further reduced, and the production efficiency of the injection molding piece is improved.
Referring to fig. 2 and 7, in addition, the holder 4121 is connected with the limiting block 7, after the tool bit 4122 extends out of the walking hole 112, the tool bit 4122 is twisted towards the injection molding part under the action of the torsion spring 6, and after the tool bit 4122 abuts against the limiting block 7, the tool bit 4122 stops twisting and keeps an angle with the holder 4121, so that the tool bit 4122 can accurately fall on the connection part of the injection molding part and the burrs, and the possibility that the tool bit 4122 abuts against the injection molding part to damage the injection molding part can be reduced.
The embodiment of the application provides an injection mold with unhairing limit function's implementation principle does: after the injection molding piece is molded, a first driving motor 321 is started to drive a screw rod 322 to rotate, the screw rod 322 rotates to enable a moving block 323 and a connecting frame 324 to drive a lower mold body 121 to descend, the injection molding piece is supported by a thimble 432 and a top plate 431 to be completely demoulded, then a clamp plate 422 is pushed by an electric push rod 421 to clamp the injection molding piece, meanwhile, a moving seat 411 descends along with the lower mold body 121 under the driving of a connecting rod 5, the moving seat 411 drives a track 4131, a travelling crane 4132, a tool holder 4121 and a tool bit 4122 to descend, and after the injection molding piece is fixed by the clamp plate 422, the tool bit 4122 falls on the burr and abuts against the connection position of the burr and the injection molding piece under the action of a torsion spring 6. And then the second driving motor 4133 is started to drive the travelling crane 4132 to move along the rail 4131, so that the cutter head 4122 moves along the periphery of the injection molding part and burrs are cut off. Therefore, the process of deburring after the injection molding piece is taken out can be reduced, the production steps are simplified, the production time can be further reduced, and the production efficiency of the injection molding piece is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides an injection mold with unhairing limit function, includes mould body (1), mould body (1) is including last mould (11) and lower mould (12), goes up mould (11) and lower mould (12) and all fixes on frame (2), and when mould body (1) is in the compound die state, goes up and forms die cavity (101) between mould (11) and lower mould (12), is equipped with on mould (11) and moulds plastics hole (111) with die cavity (101) intercommunication, its characterized in that: be equipped with on lower mould (12) at least one be used for driving lower mould (12) keep away from or be close to actuating mechanism (3) that last mould (11) removed, be equipped with on mould body (1) side cut device (4), side cut device (4) including be used for cutting off unedged trimming mechanism (41) of injection molding, be used for fixed injection molding fixture (42) and be used for ejecting climbing mechanism (43) of injection molding, trimming mechanism (41) slide to set up on last mould (11), be equipped with at least one connecting rod (5) on trimming mechanism (41), connecting rod (5) keep away from the one end of trimming mechanism (41) run through go up mould (11) with lower mould (12) are connected, lower mould (12) pass through connecting rod (5) drive trimming mechanism (41) rise or descend, fixture (42) with actuating mechanism (3) are connected, the jacking mechanism (43) is positioned in the lower die (12);
go up mould (11) and be located die cavity (101) outer edge die cavity (101) periphery is run through and is equipped with walking hole (112), when mould body (1) is in the compound die state, go up mould (11) with lower mould (12) are supported tightly, trimming mechanism (41) are close to the one end of lower mould (12) is located in walking hole (112), when mould body (1) is in the branch mould state, actuating mechanism (3) drive lower mould (12) are towards keeping away from it removes to go up mould (11) direction, and drives trimming mechanism (41) extend walking hole (112) excision burr of injection molding.
2. An injection mold with a burr removing function according to claim 1, wherein: the lower die (12) comprises a lower die body (121) and a lower die base (122), the lower die base (122) is fixed on the rack (2), a space is reserved between the lower die body (121) and the lower die base (122), one end of the driving mechanism (3) is connected with the lower die base (122), the other end of the driving mechanism (3) is connected with the lower die base (122) and drives the lower die body (121) to move towards the direction far away from or close to the upper die (11), and the connecting rod (5) is connected with the lower die body (121); one end of the jacking mechanism (43) is connected with the lower die base (122), and the other end of the jacking mechanism (43) penetrates through the lower die body (121) and is flush with the side surface of the lower die body (121) back to the lower die base (122).
3. An injection mold with a burr removing function according to claim 2, wherein: actuating mechanism (3) include mounting bracket (31) and drive assembly (32) of setting on mounting bracket (31), mounting bracket (31) are fixed on lower mould base (122), drive assembly (32) set up on mounting bracket (31) and drive assembly (32) with lower mould body (121) are connected, fixture (42) with mounting bracket (31) are connected.
4. An injection mold with a burr removing function according to claim 3, wherein: the driving assembly (32) comprises a first driving motor (321), a screw rod (322), a moving block (323) sleeved on the screw rod (322) and a connecting frame (324) arranged on the moving block (323), the first driving motor (321) is arranged at one end, far away from the lower die base (122), of the mounting frame (31), the screw rod (322) is arranged in the mounting frame (31), one end of the screw rod (322) penetrates through the mounting frame (31) to be connected with the first driving motor (321), and the other end of the screw rod (322) is rotatably connected with the lower die base (122); the connecting frame (324) is located on one side, facing the lower die body (121), of the moving block (323), and one end, away from the moving block (323), of the connecting frame (324) is connected with the lower die body (121).
5. An injection mold with a burr removing function according to claim 1, wherein: fixture (42) include at least a pair of centre gripping subassembly, the centre gripping subassembly includes electric putter (421) and splint (422) be connected with electric putter (421), electric putter (421) are fixed on mounting bracket (31), splint (422) support tightly at the injection molding be located the deckle edge of injection molding with on the position between lower mould body (121).
6. An injection mold with a burr removing function according to claim 1, wherein: the jacking mechanism (43) comprises a plurality of top plates (431) and ejector pins (432), the top plates (431) and the ejector pins (432) are arranged in a one-to-one correspondence mode, the diameters of the top plates (431) are larger than those of the ejector pins (432), the top plates (431) are uniformly arranged along the periphery of the die cavity (101), a sinking groove (1211) for the top plates (431) to be embedded in a matched mode is formed in the lower die body (121), the side face, far away from the lower die base (122), of each top plate (431) is flush with the side face, far away from the lower die base (122), of the lower die body (121), the ejector pins (432) are fixedly connected with the lower die base (122), and through holes (1212) for the ejector pins (432) to penetrate through are formed in the positions, corresponding to the top plates (431), of the lower die body (121);
when the die body (1) is in a die closing state, the ejector pins (432) are not in contact with the top plate (431), and when the die body (1) is in a die opening state, the ejector pins (432) penetrate through the through holes (1212) and are supported on the top plate (431).
7. An injection mold with a burr removing function according to claim 6, wherein: and a supporting groove (4311) for supporting the thimble (432) is formed in one side, facing the thimble (432), of the top plate (431), and when the die body (1) is in a die splitting state, the thimble (432) is tightly supported in the supporting groove (4311).
8. An injection mold with a burr removing function according to claim 1, wherein: the trimming mechanism (41) comprises a moving seat (411), a cutter (412) and a traveling component (413) for driving the cutter (412) to move, the moving seat (411) and the traveling component (413) are both positioned on one side, back to the lower die body (121), of the upper die (11), the moving seat (411) is connected with the traveling component (413), and the connecting rod (5) is connected with the moving seat (411);
the cutting knife (412) is connected with the traveling component (413), when the die body (1) is in a die closing state, one end, far away from the traveling component (413), of the cutting knife (412) is located in the traveling hole (112), and when the die body (1) is in a die separating state, one end, far away from the traveling component (413), of the cutting knife (412) extends out of the traveling hole (112) to cut off burrs of an injection molding piece.
9. An injection mold with a burr removing function according to claim 8, wherein: the traveling assembly (413) comprises a rail (4131) matched with the shape of the cavity (101), travelling cranes (4132) arranged on the rail (4131) and a second driving motor (4133) used for driving the travelling cranes (4132) to move, the rail (4131) is connected with the moving seat (411), a space is reserved between the rail (4131) and each connecting rod (5), one side, away from the moving seat (411), of each travelling crane (4132) is connected with the cutter (412), and the second driving motor (4133) is connected with the travelling cranes (4132).
10. An injection mold with a burr removing function according to claim 8, wherein: the cutting knife (412) comprises a knife handle (4121) and a knife head (4122), a torsion spring (6) used for connecting the knife handle (4121) and the knife head (4122) is arranged between the knife handle (4121) and the knife head (4122), the knife handle (4121) is connected with the traveling crane (4132), and a limiting block (7) used for limiting the torsion spring (6) to reset is arranged on the knife handle (4121);
when the mould body (1) is in a mould closing state, the tool bit (4122) is located in the walking hole (112), the torsion spring (6) is in a semi-torsion state, the tool bit (4122) is abutted against the hole wall of the walking hole (112), and when the mould body (1) is in a mould splitting state, the tool bit (4122) extends out of the walking hole (112) and burrs of an injection molding part are cut off under the driving of the walking component (413).
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| CN202111236718.7A CN113997513B (en) | 2021-10-23 | 2021-10-23 | Injection mold with unhairing limit function |
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| CN202111236718.7A CN113997513B (en) | 2021-10-23 | 2021-10-23 | Injection mold with unhairing limit function |
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| CN114750341A (en) * | 2022-04-28 | 2022-07-15 | 长沙申大科技集团股份有限公司 | Automatic demolding method applied to automobile plastic part and injection mold thereof |
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| CN113997513B (en) | 2024-03-15 |
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