CN116638710B - Injection mold with molding and assembling functions and application method thereof - Google Patents
Injection mold with molding and assembling functions and application method thereof Download PDFInfo
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- CN116638710B CN116638710B CN202310528668.2A CN202310528668A CN116638710B CN 116638710 B CN116638710 B CN 116638710B CN 202310528668 A CN202310528668 A CN 202310528668A CN 116638710 B CN116638710 B CN 116638710B
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- upper die
- pressing
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- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 238000000465 moulding Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 82
- 230000007246 mechanism Effects 0.000 claims abstract description 44
- 239000003292 glue Substances 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000001746 injection moulding Methods 0.000 claims description 28
- 238000005381 potential energy Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 description 11
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold with molding and assembling functions and a use method thereof, wherein an upper mold mechanism comprises an upper mold core and a pressing plate, the upper mold mechanism is provided with a glue inlet runner and a containing groove, the containing groove is movably provided with the pressing plate, the pressing plate is provided with a pressing rod, the upper mold core is provided with a sliding hole, and a driving piece drives the pressing plate to drive the pressing rod to slide up and down in the sliding hole; the lower die mechanism comprises a lower die core, an upper die plate, a base and a lower die plate, wherein the lower die plate is fixedly provided with an ejector rod, the lower die core is fixedly arranged on the upper die plate, the lower die mechanism is provided with a through hole, the upper die core and the lower die core are buckled to form a cavity, the upper and lower parts of the cavity are respectively communicated with the sliding hole and the through hole, and the cavity comprises a first cavity and a second cavity which are communicated; and a second elastic piece is arranged between the lower die plate and the upper die plate, and when the upper die mechanism is far away from the lower die mechanism, the second elastic piece drives the upper die plate to be far away from the lower die plate, and simultaneously drives the ejector rod to be relatively far away from the lower die core. The device has the effects of compact structure, time saving, labor cost saving, production and assembly efficiency improvement and assembly accuracy improvement.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold with molding and assembling functions and a use method thereof.
Background
As shown in fig. 1, the assembly product comprises a housing 6 and a plug pin 7, wherein the housing 6 is provided with a hole 61 corresponding to the plug pin 7, two molds are required to be used for injection molding production of the housing 6 and the plug pin 7 respectively in a common factory, and then the plug pin 7 is inserted into the hole 61 corresponding to the housing 6 for assembly.
Because two pairs of moulds are required to be separately injection-molded, the production cost is increased, in addition, manual pressing of the bolts into the embedded holes is very labor-consuming, the repeated assembly of workers for a long time is easy to be carried out with physical weakness, the assembly depth of the bolts is inconsistent, the quality of products is affected, and in addition, the manual assembly efficiency is lower; the secondary injection mold is generally adopted to perform secondary molding on the shell and the bolt in the market aiming at the situation, but the secondary molding needs to perform injection molding twice, so that time is relatively spent, in addition, the general secondary molding mold only needs to perform injection molding on the molding module, and a corresponding assembly module is lacking, so that the follow-up assembly is performed after the secondary molding, and the production efficiency is relatively influenced, so that the development of a mold capable of performing one-step molding on the shell and the bolt is urgently needed at present, and the assembly can be performed immediately after the injection molding of the shell and the bolt.
Disclosure of Invention
The invention aims to provide an injection mold with the functions of molding and assembling and a use method thereof, which have the effects of compact structure, time saving, labor cost saving, production and assembly efficiency improvement and assembly accuracy.
The technical aim of the invention is realized by the following technical scheme:
the injection mold with the functions of molding and assembling comprises an upper mold mechanism, a lower mold core and a pressing plate, wherein the upper mold mechanism is provided with a glue inlet flow passage and a containing groove, the pressing plate is movably arranged in the containing groove, the pressing plate is fixedly provided with a plurality of pressing rods, the upper mold core is provided with sliding holes, the pressing rods are in guide fit with the sliding holes, and the pressing plate is driven to move up and down in the containing groove through a driving piece and drives the pressing rods to slide up and down in the sliding holes;
the lower die mechanism comprises a lower die core, an upper die plate, a base and a lower die plate, wherein a plurality of ejector rods are fixedly arranged on the lower die plate, the lower die core and the upper die plate are provided with through holes corresponding to the ejector rods, the through holes and the sliding holes are coaxially arranged, the upper die core and the lower die core are buckled to form a die cavity, the die cavity is respectively communicated with the sliding holes and the through holes from top to bottom, and the die cavity comprises a first cavity and a second cavity which are mutually communicated; and a second elastic piece is arranged between the lower die plate and the upper die plate, and when the upper die mechanism is far away from the lower die mechanism, the second elastic piece drives the upper die plate to be far away from the lower die plate, and simultaneously drives the ejector rod to be relatively far away from the lower die core.
Through adopting above-mentioned technical scheme, at injection moulding preparation stage, through pressing together last mould mechanism on lower mould mechanism, go up mould benevolence and lower mould benevolence lock formation second cavity, this moment second elastic component is by extrusion accumulation elastic force, then drive the clamp plate through the driving piece and move up, make the clamp plate drive the depression bar lift at the hole lower extreme that slides and form first cavity, the lower bolster drives ejector pin upper end and stretches into in the second cavity simultaneously, then advance the gluey injection moulding through advancing the gluey runner, because first cavity and second cavity are the intercommunication, so form the bolt part in first cavity, form the casing part in the second cavity, assemble after injection moulding is accomplished, through slowly lifting mould mechanism, second elastic component release self elastic force makes the cope match-up die plate pattern upwards move away from the lower bolster, so, ejector pin on the lower bolster keeps closely laminating all the time through the through-hole downwards relatively keeping away from the casing, and leave the embedded hole on the casing, then the driving piece drives the clamp plate and pushes down, the clamp plate drives down and moves in first cavity and insert hole, the plug pin assembly cost is compact, the assembly cost is improved, and the assembly cost is compact, the assembly cost is realized in the embedded hole, and assembly cost is accomplished.
The invention is further provided with: the plastic feeding groove is formed in the end of the ejector rod, when the upper die core is attached to the lower die core, the first cavity is communicated with the second cavity through the plastic feeding groove, and the second elastic piece drives the ejector rod to move along the axial direction of the through hole.
By adopting the technical scheme, the glue inlet groove is formed, so that the upper end face of the ejector rod is propped against the upper end face of the second cavity in the injection molding stage, and then molten fluid glue can only flow into the second cavity at the upper end through the glue inlet groove in the injection molding process, so that the bonding area between the shell and the bolt after injection molding is finished can be reduced, and the situation that the bolt or the surface of the shell is damaged when the compression bar drives the bolt to be downwards inserted into the embedded hole of the shell in the assembly stage is prevented; and because the connecting site between the bolt and the shell is smaller, the connecting site is more easily broken by pressing down the pressure rod, so that the bolt is inserted into the embedded hole.
The invention is further provided with: the glue inlet groove is a V-shaped groove, and the V-shaped groove is in a necking shape from one end far away from the ejector rod to one end close to the ejector rod.
By adopting the technical scheme, the V-shaped groove in the shape of the necking from top to bottom can reduce the contact area between the shell and the bolt as much as possible after injection molding is finished, so that the bolt or the surface of the shell is effectively prevented from being damaged during plugging and assembling, and the yield of the plastic injection molding machine is improved.
The invention is further provided with: the driving piece is set to be the hydro-cylinder, go up the module and include the fixing base, the fixing base has set firmly the hydro-cylinder, the hydro-cylinder the hob with clamp plate fixed connection.
By adopting the technical scheme, the driving force of the oil cylinder is strong, and the refining operation can be performed, so that the distance that the oil cylinder drives the pressing plate to move up and down is controlled more accurately, and the running stability of the invention is improved.
The invention is further provided with: the oil cylinder is provided with two, the two ends of the pressing plate extend to the two supporting parts symmetrically distributed on the outer shape of the accommodating groove, and the oil rod ends of the two oil cylinders are respectively and fixedly connected to the two supporting parts.
By adopting the technical scheme, the symmetrically distributed oil cylinders can ensure that the distance of the whole up-and-down movement of the pressing plate is more uniform, so that the forming height and the insertion depth of the driving bolt are more uniform, and the consistency of the quality of products produced and assembled by the invention is improved.
The invention is further provided with: the second elastic pieces are arranged in four, the lower die plate is provided with four containing grooves corresponding to the four second elastic pieces, the four containing grooves are symmetrically distributed in four corners of the lower die plate, and each containing groove is internally provided with one second elastic piece.
By adopting the technical scheme, the four second elastic pieces are symmetrically distributed between the upper die plate and the lower die plate, so that the heights of gaps between the upper die plate and the lower die plate are kept consistent as much as possible when the upper die plate and the lower die plate are in an assembly preparation stage, the situation that the ejector rod is accidentally bent due to inconsistent heights of the gaps is prevented, and the service life of the invention is prolonged.
The invention is further provided with: a first elastic piece is arranged between the base and the lower die plate, and the first elastic piece always has a movement trend of driving the lower die plate to be far away from the base.
By adopting the technical scheme, when the upper die mechanism is lifted slowly in the assembly preparation stage, the first elastic piece can drive the lower die plate to be away from the base, and when the upper die mechanism can be pressed down by the lower die mechanism in the next injection preparation stage, the first elastic piece can play a role in buffering at the moment, and the hard collision among all parts in the pressing down process is prevented from damaging, so that the service life of the plastic injection molding machine is prolonged.
The invention is further provided with: the base has set firmly a plurality of spacing posts, cope match-plate pattern and lower bolster correspond spacing hole has been seted up to spacing post, spacing post with spacing hole direction cooperation makes cope match-plate pattern, lower bolster activity are located on the base, just spacing post upper end has set firmly the stopper, the cope match-plate pattern corresponds the spacing groove has been seted up to the stopper, the stopper activity is located in the spacing inslot, the second elastic component with first elastic component mutually support, order about cope match-plate pattern, cope match-plate pattern is keeping away from the base in-process, the cope match-plate pattern with produce the gap between the lower bolster, just the interval of gap is greater than or equal to the degree of depth of inlaying the hole.
Through adopting above-mentioned technical scheme, leave the clearance that the stopper reciprocated in the spacing groove, in the assembly preparation stage, when upward the mould mechanism lifts to the highest point, through the spacing stopper of spacing post tip and the spacing groove limit stop of cope match-plate pattern, and the mutually supporting of first elastic component and second elastic component, first elastic component drives the cope match-plate pattern and drives the lower bolster simultaneously and move up, simultaneously the second elastic component has a decurrent power of supporting to the lower bolster, the distance that makes the lower bolster reciprocate is less than the distance that the cope match-plate pattern reciprocated, can guarantee that the cope match-plate pattern can not break away from spacing post, and the gap interval between cope match-plate pattern and the lower bolster is greater than or equal to the degree of depth of inlaying the hole.
The invention is further provided with: the lower die plate is provided with a groove, a pull plate is fixedly arranged in the groove, a plurality of mounting holes are formed in the pull plate corresponding to the ejector rods, and the ejector rods are arranged in the mounting holes in a penetrating mode and are fixed.
By adopting the technical scheme, the additional installation of the pull plate is favorable for the installation and fixation of the ejector rod on the lower template, and is also favorable for the subsequent replacement of the ejector rod.
The other technical witnessed by the invention is realized by the following technical proposal: the application method of the injection mold with the functions of molding and assembling comprises the following steps:
s1: pressing the upper die mechanism on the lower die mechanism to enable the second elastic piece to be extruded and accumulated with elastic potential energy, forming a second cavity between the upper die core and the lower die core, and enabling the ejector rod on the lower die plate to move upwards through the through hole and extend into the second cavity to participate in forming of the embedded hole;
s2: the driving piece drives the pressing plate and the pressing rod to move upwards synchronously, a first cavity is reserved in the sliding hole by the pressing rod in the sliding process, and a glue passing gap is reserved between the lower end surface of the pressing rod and the upper end surface of the ejector rod so that the first cavity is communicated with the second cavity;
s3: injection molding is carried out through glue feeding through a glue feeding runner, a bolt is molded in a first cavity, and a shell is molded in a second cavity;
s4: the upper die mechanism is slowly lifted, the second elastic piece is used for jacking up the upper die plate upwards and keeping away from the lower die plate under the condition that the upper die core and the lower die core are tightly attached all the time by releasing elastic potential energy, and at the moment, a push rod on the upper die plate is relatively far away from the shell downwards through a through hole, and an embedding hole is left on the shell;
s5: the pressing plate is driven to press downwards through the driving piece, the pressing plate drives the pressing rod to move downwards in the sliding hole, the pressing rod is propped against a bolt formed in the first cavity, and the bolt is driven to be inserted into the embedding hole to complete assembly;
s6: and (5) demolding.
In summary, the invention has the following beneficial effects: the upper die assembly and the lower die assembly are respectively internally provided with the pressing rods and the ejector rods, the upper die assembly is movably provided with the pressing plates through the oil cylinders, the pressing rods are fixedly arranged at the lower ends of the pressing plates, when the upper die assembly is pressed on the lower die assembly, injection molding is realized through glue feeding of the glue feeding runners, corresponding pins and shell components are respectively injection molded in a first cavity and a second cavity which are mutually communicated, the upper die assembly is slowly lifted up after injection molding is finished, the upper die plate is matched with the second elastic piece to jack up the upper die plate relative to the lower die plate, the upper die plate and the lower die plate are relatively separated to generate gaps, the ejector rods are far away from the shell and form embedded holes in the shell, then the pressing plates are driven to move downwards through the oil cylinders, the pins in the first cavity are driven to be inserted into the embedded holes of the corresponding shell to realize continuous molding and assembly, in addition, the pressing rods and the ejector rods are arranged inside the injection molding die, excessive space is not occupied, the mechanical assembly is more accurate, the yield of the assembled products can be ensured, the structure is compact, the time and the labor cost are saved, the production assembly efficiency is improved, and the assembly is accurate.
Drawings
Fig. 1 is a separation view of the product housing and the latch of the present invention.
Fig. 2 is an overall structural view of the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is an exploded view of another view of the present invention.
Fig. 5 is a longitudinal section of the drawing of the present invention, at a stage of preparation for injection molding.
Fig. 6 is an enlarged view of a portion of the area a of fig. 5 in accordance with the present invention.
Fig. 7 is another longitudinal cross-sectional view of the present invention at the stage of assembly of the housing and the plug.
Fig. 8 is an enlarged partial view of region B of fig. 7 in accordance with the present invention.
Fig. 9 is an enlarged partial view of region C of fig. 7 in accordance with the present invention.
In the figure: 1. a fixing seat; 11. a fixing plate; 111. a mounting groove; 112. positioning holes; 12. an upper die core; 121. a slip hole; 13. a receiving groove; 14. a pressing plate; 141. a support part; 142. a compression bar; 143. an oil cylinder; 15. a glue inlet flow passage; 21. a base; 211. a limit column; 212. a limiting block; 22. a lower template; 221. a receiving groove; 222. a groove; 223. pulling a plate; 2231. a mounting hole; 224. positioning columns; 23. a second elastic member; 24. a push rod; 241. a glue inlet groove; 25. a first elastic member; 26. a top plate; 261. a thimble; 3. an upper template; 31. a lower die core; 311. a through hole; 32. a limit groove; 33. a through hole; 41. a limiting hole; 42. a slit; 5. a cavity; 51. a first chamber; 52. a second chamber; 6. a housing; 61. embedding holes; 7. a plug pin; 71. a convex part.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The injection mold with the forming and assembling functions comprises an upper mold mechanism and a lower mold mechanism, wherein the upper mold mechanism comprises an upper mold core 12, a pressing plate 14, a fixed seat 1 and a fixed plate 11 fixedly arranged on the fixed seat 1, the fixed plate 11 is provided with a mounting groove 111, the upper mold core 12 is fixedly arranged in the mounting groove 111, a containing groove 13 is formed between the fixed plate 11 and the fixed seat 1, the containing groove 13 is communicated with the mounting groove 111, the pressing plate 14 is movably arranged in the containing groove 13, a glue inlet runner 15 is formed among the fixed seat 1, the pressing plate 14 and the upper mold core 12, a plurality of pressing rods 142 are fixedly arranged on the pressing plate 14, the upper mold core 12 is provided with a sliding hole 121, the pressing rods 142 are in guide fit with the sliding hole 121, and the pressing plates 14 are driven to move up and down in the containing groove 13 through driving parts and drive the pressing rods 142 to slide up and down in the sliding hole 121.
As shown in fig. 1-4, the lower die mechanism comprises a lower die core 31, an upper die plate 3, a base 21 and a lower die plate 22, wherein a plurality of positioning columns 224 are fixedly arranged on the lower die plate 22, positioning holes 112 are formed in the fixing plate 11 corresponding to the positioning columns 224, the positioning holes 112 are matched with the positioning columns 224 in a positioning manner, a plurality of through holes 33 are formed in the upper die plate 3 corresponding to the positioning columns 224, and the positioning columns 224 are matched with the through holes 33 in a guiding manner, so that when the upper die plate 3 and the lower die plate 22 move up and down in the vertical direction, the moving directions of the upper die plate 3 and the lower die plate 22 are more consistent; the lower die plate 22 is provided with the groove 222, the pull plate 223 is fixedly arranged in the groove 222, the pull plate 223 is provided with a plurality of mounting holes 2231, a plurality of ejector rods 24 are fixedly arranged through the mounting holes 2231 in a penetrating manner, the mounting of the ejector rods 24 on the lower die plate 22 is facilitated by the additionally arranged pull plate 223, the subsequent replacement of the ejector rods 24 is facilitated, the lower die core 31 is fixedly arranged on the upper die plate 3, the lower die core 31 and the upper die plate 3 are provided with through holes 311 corresponding to the ejector rods 24, the through holes 311 and the sliding holes 121 are coaxially arranged, and the diameter of the ejector rods 24 is equal to or slightly larger than that of the compression rods 142.
As shown in fig. 5-8, the upper mold core 12 and the lower mold core 31 are buckled to form a cavity 5, the upper and lower parts of the cavity 5 are respectively communicated with the sliding hole 121 and the through hole 311, the end part of the ejector rod 24 is provided with a glue inlet groove 241, the glue inlet groove 241 is provided with a V-shaped groove, the V-shaped groove is in a necking shape from one end far away from the ejector rod 24 to one end close to the ejector rod 24, the V-shaped groove in a necking shape from top to bottom can reduce the contact area between the shell 6 and the plug pin 7 after injection molding is finished as much as possible, the plug pin 7 or the surface of the shell 6 can be effectively prevented from being damaged during plug assembly, the yield of the invention is improved, and in addition, the V-shaped groove is provided with a convex part 71 at the bottom of the plug pin 7 formed by injection molding; the upper die core 12 is provided with the first cavity 51, the lower die core 31 is provided with the second cavity 52, when the upper die core 12 is attached to the lower die core 31, the first cavity 51 is communicated with the second cavity 52 through the glue inlet groove 241, the second elastic piece 23 drives the ejector rod 24 to move along the axial direction of the sliding hole 121, the glue inlet groove 241 is formed so that the upper end surface of the ejector rod 24 is abutted against the upper end surface of the second cavity 52 in the injection molding stage, and then molten fluid glue can only flow into the second cavity 52 at the upper end through the glue inlet groove 241 in the injection molding stage, so that the bonding area between the shell 6 and the plug pin 7 after injection molding is finished can be reduced, the situation that the plug pin 7 or the surface of the shell 6 is damaged when the plug pin 7 is driven to be downwards inserted into the embedded hole 61 of the shell 6 in the assembly stage is prevented, and the connecting site between the plug pin 7 and the shell 6 is easier to be pressed down through the plug pin 142 because the connecting site is smaller; a second elastic piece 23 is arranged between the lower die plate 22 and the upper die plate 3, when the upper die mechanism is far away from the lower die mechanism, the second elastic piece 23 drives the upper die plate 3 to be far away from the lower die plate 22, and simultaneously drives the ejector rod 24 to be relatively far away from the lower die core 31.
As shown in fig. 1-4, the driving part is set to be oil cylinders 143, two oil cylinders 143 are respectively fixedly arranged at two sides of the fixed seat 1, two ends of the pressing plate 14 extend to two supporting parts 141 which are symmetrically distributed in the shape of the accommodating groove 13, the oil rod ends of the two oil cylinders 143 are respectively fixedly connected to the supporting parts 141 at two sides, the driving force of the oil cylinders 143 is stronger, and the refining operation can be carried out, so that the distance that the oil cylinders 143 drive the pressing plate 14 to move up and down is controlled to be more accurate, the running stability of the invention is improved, the symmetrically distributed oil cylinders 143 can ensure that the distance that the pressing plate 14 moves up and down is more uniform, and the forming height and the inserting depth of the driving bolt 7 are more uniform, and the consistency of the product quality produced and assembled by the invention is improved; four second elastic pieces 23 are arranged, four accommodating grooves 221 are formed in the lower die plate 22 corresponding to the four second elastic pieces 23, the four accommodating grooves 221 are symmetrically distributed at four corners of the lower die plate 22, one second elastic piece 23 is arranged in each accommodating groove 221, the four second elastic pieces 23 are symmetrically distributed between the upper die plate 3 and the lower die plate 22, the heights of gaps 42 between the upper die plate 3 and the lower die plate 22 can be kept consistent as much as possible when the upper die plate 3 and the lower die plate 22 are in an assembly preparation stage, accidental bending of the ejector rod 24 caused by inconsistent heights of the gaps 42 is prevented, and the service life of the invention is prolonged.
As shown in fig. 3-5 and fig. 7-9, a first elastic piece 25 is arranged between the base 21 and the lower die plate 22, the first elastic piece 25 always has a movement trend of driving the lower die plate 22 to be far away from the base 21, when the upper die mechanism is lifted slowly in the assembly preparation stage, the first elastic piece 25 can drive the lower die plate 22 to be far away from the base 21, and when the upper die mechanism is pressed down in the next injection preparation stage, the first elastic piece 25 can play a role of buffering, and the damage caused by hard collision among all parts in the pressing down process is prevented, so that the service life of the invention is prolonged; the base 21 is fixedly provided with a plurality of limit posts 211, each first elastic piece 25 is correspondingly sleeved on one limit post 211, the limit posts 211 corresponding to the upper template 3 and the lower template 22 are provided with limit holes 41, the limit posts 211 and the limit holes 41 are in guide fit, the upper template 3 and the lower template 22 are movably arranged on the base 21, the limit posts 211 are fixedly provided with limit blocks 212 at the upper ends, the upper template 3 corresponding to the limit blocks 212 are provided with limit grooves 32, the limit blocks 212 are movably arranged in the limit grooves 32, the second elastic pieces 23 are mutually matched with the first elastic pieces 25, the upper template 3 and the upper template 3 are driven to move away from the base 21, gaps 42 are formed between the upper template 3 and the lower template 22, the distance between the gaps 42 is larger than or equal to the depth of the embedded holes 61, movable gaps for upward and downward movement of the limit blocks 212 are reserved in the limit grooves 32, and in the assembly preparation stage, when the upper template mechanism is lifted to the highest point, the limit blocks 212 at the end of the limit post 211 are in limit grooves 32, and the first elastic pieces 25 and the second elastic pieces 23 are mutually matched, namely, the first elastic pieces 25 drive the upper template 3 and the lower template 22 to move away from the upper template 22, and simultaneously, and the distance between the upper template 22 and the upper template 22 is not larger than the distance between the upper template 22 and the upper template 22 is ensured, and the distance between the upper template 22 and the upper template 22 is larger than the distance between the upper template 22 and the upper template 22.
As shown in fig. 3, 5 and 7, a top plate 26 is movably arranged above the base 21, the top plate 26 is driven to vertically lift by a driving oil cylinder (not shown), a plurality of ejector pins 261 are fixedly arranged on the top plate 26, avoidance holes are respectively formed in the upper die plate 3, the lower die plate 22 and the pull plate 223 corresponding to the ejector pins 261, after the plug pin 7 is inserted into the embedded hole 61 of the shell 6 to complete assembly, the top plate 26 is driven to move upwards by the driving oil cylinder, the ejector pins 261 can be driven to extend into the second cavity 52 through the avoidance holes, and the shell 6 formed in the second cavity 52 is ejected out to realize demolding.
The application method of the injection mold with the functions of molding and assembling comprises the following steps:
s1: pressing the upper die mechanism on the lower die mechanism to enable the second elastic piece to be extruded and accumulated with elastic potential energy, forming a second cavity between the upper die core and the lower die core, and enabling the ejector rod on the lower die plate to move upwards through the through hole and extend into the second cavity to participate in forming of the embedded hole;
s2: the driving piece drives the pressing plate and the pressing rod to move upwards synchronously, a first cavity is reserved in the sliding hole by the pressing rod in the sliding process, and a glue passing gap is reserved between the lower end surface of the pressing rod and the upper end surface of the ejector rod so that the first cavity is communicated with the second cavity;
s3: injection molding is carried out through glue feeding through a glue feeding runner, a bolt is molded in a first cavity, and a shell is molded in a second cavity;
s4: the upper die mechanism is slowly lifted, the second elastic piece is used for jacking up the upper die plate upwards and keeping away from the lower die plate under the condition that the upper die core and the lower die core are tightly attached all the time by releasing elastic potential energy, and at the moment, a push rod on the upper die plate is relatively far away from the shell downwards through a through hole, and an embedding hole is left on the shell;
s5: the pressing plate is driven to press downwards through the driving piece, the pressing plate drives the pressing rod to move downwards in the sliding hole, the pressing rod is propped against a bolt formed in the first cavity, and the bolt is driven to be inserted into the embedding hole to complete assembly;
s6: and (5) demolding.
In the injection molding preparation stage, the upper die mechanism is pressed on the lower die mechanism, the upper die core 12 and the lower die core 31 are buckled to form a second cavity 52, and at the moment, the second elastic piece 23 is extruded to accumulate elastic force; then, the pressing plate 14 is driven to move upwards by the driving piece, so that the pressing plate 14 drives the pressing rod 142 to lift at the lower end of the sliding hole 121 to form a first cavity 51, meanwhile, the lower die plate 22 drives the upper end of the ejector rod 24 to extend into the second cavity 52, a glue passing gap is reserved between the lower end surface of the pressing rod 142 and the upper end surface of the ejector rod 24, so that the first cavity and the second cavity are communicated, glue is fed through the glue feeding flow channel 15 for injection molding, as the first cavity 51 and the second cavity 52 are communicated, a plug pin 7 part is formed in the first cavity 51, a shell 6 part is formed in the second cavity 52, assembly is carried out after injection molding is finished, the second elastic piece 23 releases self elastic force to enable the upper die plate 3 to move upwards to be far away from the lower die plate 22, in the process, the ejector rod 24 on the lower die plate 22 is kept closely attached to the lower die core 31 all the time by the elastic force of the second elastic piece 23, so that the ejector rod 24 on the lower die plate 22 is relatively far away from the shell 6 downwards by the through hole 311, an embedded hole 61 is left on the shell 6, then the driving piece drives the pressing plate 14 to press down, the pressing plate 14 drives the pressing rod 14 to move downwards and the first cavity 7 to move out of the plug pin 7 to enable the plug pin 7 to be ejected from the upper die core 31 to be matched with the upper die core 31, and finally, the assembly is finished by pushing the plug pin 7 to move up through the plug pin 7 in the cavity 7 through the upper die hole 7, and finally the assembly is finished.
The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.
Claims (10)
1. An injection mold with molding and assembling functions is characterized by comprising:
the upper die mechanism comprises an upper die core (12) and a pressing plate (14), wherein the upper die mechanism is provided with a glue inlet flow channel (15) and a containing groove (13), the containing groove (13) is movably provided with the pressing plate (14), the pressing plate (14) is fixedly provided with a plurality of pressing rods (142), the upper die core (12) is provided with a sliding hole (121), the pressing rods (142) are in guide fit with the sliding hole (121), and the pressing plate (14) is driven to move up and down in the containing groove (13) through a driving piece and drives the pressing rods (142) to slide up and down in the sliding hole (121);
the lower die mechanism comprises a lower die core (31), an upper die plate (3), a base (21) and a lower die plate (22), wherein a plurality of ejector rods (24) are fixedly arranged on the lower die plate (22), the lower die core (31) is fixedly arranged on the upper die plate (3), through holes (311) are formed in the lower die core (31) and the upper die plate (3) corresponding to the ejector rods (24), the through holes (311) are coaxially arranged with the sliding holes (121), the upper die core (12) and the lower die core (31) are buckled to form a die cavity (5), the die cavity (5) is vertically communicated with the sliding holes (121) and the through holes (311) respectively, and the die cavity (5) comprises a first cavity (51) and a second cavity (52) which are mutually communicated; and a second elastic piece (23) is arranged between the lower die plate (22) and the upper die plate (3), when the upper die mechanism is far away from the lower die mechanism, the second elastic piece (23) drives the upper die plate (3) to be far away from the lower die plate (22), and simultaneously drives the ejector rod (24) to be relatively far away from the lower die core (31).
2. The injection mold with molding and assembling functions according to claim 1, wherein: glue inlet grooves (241) are formed in the end portions of the ejector rods (24), when the upper die core (12) is attached to the lower die core (31), the first cavity (51) and the second cavity (52) are communicated through the glue inlet grooves (241), and the second elastic piece (23) drives the ejector rods (24) to move along the axial direction of the through holes (311).
3. The injection mold with molding and assembling functions according to claim 2, wherein: the glue inlet groove (241) is a V-shaped groove, and the V-shaped groove is in a necking shape from one end far away from the ejector rod (24) to one end close to the ejector rod (24).
4. The injection mold with molding and assembling functions according to claim 1, wherein: the driving piece is set to be an oil cylinder (143), the upper die mechanism comprises a fixing seat (1), the oil cylinder (143) is fixedly arranged on the fixing seat (1), and an oil rod of the oil cylinder (143) is fixedly connected with the pressing plate (14).
5. The injection mold with molding and assembling functions according to claim 4, wherein: the two oil cylinders (143) are provided with two supporting parts (141) which are symmetrically distributed and extend to the outer shape of the accommodating groove (13) at two ends of the pressing plate (14), and the oil rod ends of the two oil cylinders (143) are respectively and fixedly connected with the two supporting parts (141).
6. The injection mold with molding and assembling functions according to claim 1, wherein: the second elastic pieces (23) are arranged in four, the lower die plate (22) is provided with four containing grooves (221) corresponding to the four second elastic pieces (23), the four containing grooves (221) are symmetrically distributed in four corners of the lower die plate (22), and each containing groove (221) is internally provided with one second elastic piece (23).
7. The injection mold with molding and assembling functions according to claim 1, wherein: a first elastic piece (25) is arranged between the base (21) and the lower die plate (22), and the first elastic piece (25) always has a movement trend of driving the lower die plate (22) to be far away from the base (21).
8. The injection mold with molding and assembling functions according to claim 7, wherein: the base (21) has set firmly a plurality of spacing posts (211), cope match-plate pattern (3) and lower bolster (22) correspond spacing hole (41) have been seted up to spacing post (211), spacing post (211) with spacing hole (41) direction cooperation makes cope match-plate pattern (3), lower bolster (22) activity are located on base (21), just spacing post (211) upper end has set firmly stopper (212), cope match-plate pattern (3) correspond spacing groove (32) have been seted up to stopper (212), stopper (212) activity are located in spacing groove (32), second elastic component (23) with first elastic component (25) mutually support, order about cope match-plate pattern (3), cope match-plate pattern (3) are keeping away from in-process of base (21), cope match-plate pattern (3) with produce gap (42) between lower bolster (22), just gap (42) interval is greater than or equal to the degree of depth of inlaying hole (61).
9. The injection mold with molding and assembling functions according to claim 1, wherein: the lower die plate (22) is provided with a groove (222), a pull plate (223) is fixedly arranged in the groove (222), a plurality of mounting holes (2231) are formed in the pull plate (223) corresponding to the ejector rods (24), and the ejector rods (24) are arranged in the mounting holes (2231) in a penetrating mode and are fixed.
10. A method for using the injection mold with forming and assembling functions as claimed in any one of claims 1 to 9, which is characterized in that: the method comprises the following steps:
s1: pressing the upper die mechanism on the lower die mechanism to enable the second elastic piece to be extruded and accumulated with elastic potential energy, forming a second cavity between the upper die core and the lower die core, and enabling the ejector rod on the lower die plate to move upwards through the through hole and extend into the second cavity to participate in forming of the embedded hole;
s2: the driving piece drives the pressing plate and the pressing rod to move upwards synchronously, a first cavity is reserved in the sliding hole by the pressing rod in the sliding process, and a glue passing gap is reserved between the lower end surface of the pressing rod and the upper end surface of the ejector rod so that the first cavity is communicated with the second cavity;
s3: injection molding is carried out through glue feeding through a glue feeding runner, a bolt is molded in a first cavity, a shell is molded in a second cavity, and the bolt is connected with the shell part;
s4: the upper die mechanism is slowly lifted, the second elastic piece is used for jacking up the upper die plate upwards and keeping away from the lower die plate under the condition that the upper die core and the lower die core are tightly attached all the time by releasing elastic potential energy, and at the moment, a push rod on the upper die plate is relatively far away from the shell downwards through a through hole, and an embedding hole is left on the shell;
s5: the pressing plate is driven to press downwards through the driving piece, the pressing plate drives the pressing rod to move downwards in the sliding hole, the pressing rod is propped against a bolt formed in the first cavity, and the bolt is driven to be inserted into the embedding hole to complete assembly;
s6: and (5) demolding.
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| CN116638710A (en) | 2023-08-25 |
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