CN112895384A - Silica gel injection molding equipment and molding method thereof - Google Patents
Silica gel injection molding equipment and molding method thereof Download PDFInfo
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- CN112895384A CN112895384A CN202110069992.3A CN202110069992A CN112895384A CN 112895384 A CN112895384 A CN 112895384A CN 202110069992 A CN202110069992 A CN 202110069992A CN 112895384 A CN112895384 A CN 112895384A
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- silica gel
- connecting disc
- die head
- injection molding
- extrusion molding
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
- B29C48/2562—Mounting or handling of the die
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/287—Raw material pre-treatment while feeding
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- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses silica gel injection molding equipment and a molding method thereof, and the silica gel injection molding equipment comprises a base, wherein an extrusion molding cylinder is fixedly arranged at the upper part of the base through supporting legs, a die head is arranged at one end of the extrusion molding cylinder, a storage cylinder is fixedly arranged at the position, close to the other end, of the outer part of the extrusion molding cylinder, a top cover is movably arranged at the upper part of the storage cylinder, a handle is fixedly arranged at the middle position of the upper part of the top cover, an injection valve is fixedly arranged at one side position of the upper part of the top cover, a motor is fixedly arranged at one side position, located at the extrusion molding cylinder, of the upper. According to the silica gel injection molding equipment, the silica gel can be stirred while the liquid silica gel is pushed, the phenomena of precipitation, layering and the like of the liquid silica gel are avoided, the quality defect of the injection molded silica gel is avoided, meanwhile, the die head can be conveniently replaced, and the use convenience is improved.
Description
Technical Field
The invention relates to the field of molding equipment, in particular to silica gel injection molding equipment, and more particularly relates to silica gel injection molding equipment and a molding method thereof.
Background
During production of silica gel products, various raw materials are generally mixed to form liquid silica gel, and then the liquid silica gel is molded through the processes of injection, vulcanization, solidification and the like, wherein part of the silica gel products also need to be molded by using an injection mold and matching with an injection molding machine, and the injection molding is generally to extrude the silica gel through a die head with a specific shape so that the extruded silica gel and the die head have the same shape;
firstly, the existing silica gel injection molding equipment does not have a stirring function, and silica gel needs to be stored through a storage cylinder when being extruded, and when the internal capacity of the storage cylinder is insufficient, the silica gel is conveyed into the storage cylinder through the outside, but when the silica gel injection molding equipment works, liquid silica gel can have the phenomena of uneven distribution such as precipitation, layering and the like in the storage cylinder, so that the quality of the injection molded silica gel has defects; secondly, the inconvenient die head of changing of current silica gel injection moulding equipment, because of this silica gel injection moulding's of die head decision shape, consequently to different shapes, people need change different die heads, and current die head mainly connects fixedly through the flange, need dismantle many bolts during the operation, and the dismouting is very inconvenient.
Disclosure of Invention
The invention mainly aims to provide silica gel injection molding equipment, which can effectively solve the problems in the background technology that: the existing silica gel injection molding equipment does not have a stirring function, and the silica gel needs to be stored through a storage cylinder when being extruded, when the internal capacity of the storage cylinder is insufficient, the silica gel is conveyed into the storage cylinder through the outside, but when the silica gel injection molding equipment works, the liquid silica gel can be precipitated, layered and distributed unevenly in the storage cylinder, so that the quality of the injection molded silica gel has defects; secondly, the inconvenient die head of changing of current silica gel injection moulding equipment, because of the shape of this silica gel injection moulding of die head decision, consequently to different shapes, people need change different die heads, and current die head is mainly connected fixedly through the flange, need dismantle many bolts during the operation, the very inconvenient technical problem of dismouting.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a silica gel injection moulding equipment, the on-line screen storage device comprises a base, the upper portion of base has an extrusion molding section of thick bamboo through supporting leg fixed mounting, the one end of an extrusion molding section of thick bamboo is equipped with the die head, the outside of an extrusion molding section of thick bamboo is close to other end position fixed mounting and has a storage cylinder, the upper portion movable mounting of a storage cylinder has the top cap, the upper portion fixed mounting that puts placed in the middle of the upper portion of top cap has the handle, upper portion one side position fixed mounting of top cap has the injection valve, one side position that the upper portion of base is located an extrusion molding section of thick bamboo has the motor through support fixed mounting, be equipped with mounting structure between die head and the extrusion molding section of thick bamboo, the inside central point of an extrusion molding section of thick bamboo puts the rotation and is connected with the ejector.
As a further aspect of the present invention, the mounting structure includes a mounting ring, a first connecting plate, a second connecting plate, a wedge, a first inclined surface and a second inclined surface, the first connecting plate is fixedly connected to one end of the die head, the second connecting plate is fixedly connected to one end of the extrusion cylinder, the mounting ring is sleeved outside the first connecting plate and the second connecting plate, the first inclined surface is disposed at a side edge of the first connecting plate, the second inclined surface is disposed at a side edge of the second connecting plate, and the wedge is fixedly mounted inside the mounting ring.
As a further aspect of the present invention, the wedge has a V-shaped cross section, and the slope of the surface of the wedge is equal to the slope of the first slope and the second slope.
As a further scheme of the invention, a positioning column is fixedly installed on the other side of the first connecting disc, a positioning hole is formed in the surface of the other side of the second connecting disc, and the positioning column is matched with the positioning hole in a matching manner.
As a further scheme of the invention, the opposite surfaces of the first connecting disc and the second connecting disc are respectively connected with a sealing rubber gasket in a gluing mode, and the minimum width of the wedge block is smaller than the total thickness of the first connecting disc and the second connecting disc.
As a further scheme of the invention, the mounting ring is composed of two semicircular rings, the two ends of each semicircular ring are respectively provided with a convex block, and a bolt penetrates through the convex blocks at the two ends of each semicircular ring.
As a further scheme of the invention, the stirring mechanism comprises a stirring shaft, stirring blades, a shaft seat, a driven gear and a driving gear, the stirring shaft is rotatably connected to the central position inside the storage cylinder through the shaft seat, the stirring blades are fixedly connected to the outside of the stirring shaft, one end of the stirring shaft penetrates through the storage cylinder and is fixedly connected with the driven gear, and the driving gear is fixedly connected to the outside of the material pushing shaft.
As a further scheme of the invention, the driving gear is in meshed connection with the driven gear, and the size of the driving gear is larger than that of the driven gear.
A molding method of silica gel injection molding equipment specifically comprises the following steps:
the method comprises the following steps: firstly, connecting an injection valve with an external silica gel injection pump to ensure that liquid silica gel enters the storage cylinder through the injection valve;
step two: when the motor works, an output shaft of the motor drives the material pushing shaft to rotate, the material pushing shaft drives the helical blade to rotate, meanwhile, the material pushing shaft also drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the stirring shaft to rotate, and the stirring shaft drives the stirring blade to rotate, so that the liquid silica gel in the storage cylinder is stirred;
step three: while stirring, part of the liquid silica gel enters the inside of the extrusion molding cylinder through the bottom of the storage cylinder, the liquid silica gel enters the inside of the die head through the extrusion molding cylinder along with the rotation of the spiral blade driven by the pushing shaft, and then is extruded through the die head, and the liquid silica gel after the foundation is solidified through external vulcanization, cooling and other equipment, so that the silica gel injection molding is completed;
step four: the shape of the silica gel injection depends on the shape of the die head, the die head needs to be replaced when the shape needs to be replaced, when the die head needs to be replaced, the bolt between the two semicircular ring bumps of the mounting ring is firstly rotated, the mounting ring is detached after the bolt is taken down, and then the first connecting disc and the second connecting disc of the die head can be separated, so that the die head can be detached;
step five: insert the locating hole of second connection pad with new die head through the reference column of first connection pad, then overlap two semicircle rings of collar at the outside of first connection pad and second connection pad, penetrate the bolt, then screw up the bolt, along with the tightening of bolt, the voussoir promotes first connection pad and second connection pad through first inclined plane and second inclined plane and extrudees relatively, thereby compress the sealed cushion, the screwed more tight of bolt, interval between two semicircle rings of collar is less, lead to pressure big more, the voussoir is used in the pressure of first connection pad and second connection pad big more.
Compared with the prior art, the invention has the following beneficial effects:
by arranging the stirring mechanism, the stirring shaft drives the stirring blades to rotate, so that the liquid silica gel in the storage cylinder is stirred, the liquid silica gel stored in the storage cylinder can be stirred, the phenomenon of non-uniformity of precipitation, layering and the like of the liquid silica gel is avoided, and the defect of quality of an injection-molded silica gel product is avoided;
the driving gear is matched with the driven gear, the driving gear rotates along with the rotation of the material pushing shaft, so that the driven gear is driven to rotate, the driven gear drives the stirring shaft to rotate, external power equipment is not needed, the structure is simpler, the stirring mechanism can be ensured to operate while pushing materials, and the driving gear is larger than the driven gear, so that the rotating speed of the driven gear is greatly increased, and the stirring effect is better;
through the arrangement of the mounting structure, when the die head is replaced, firstly, the bolt between the two semicircular ring lugs of the mounting ring is rotated, after the bolt is taken down, the mounting ring is disassembled, then the first connecting disc and the second connecting disc of the die head can be separated, the work of disassembling the die head is completed, a new die head is inserted into the positioning hole of the second connecting disc through the positioning column of the first connecting disc, then the two semicircular rings of the mounting ring are sleeved outside the first connecting disc and the second connecting disc, the bolt is penetrated, and then the bolt is screwed down, compared with the traditional mode of directly fixing through flange connection, the time and energy for disassembling and assembling a plurality of bolts are greatly reduced, the operation is more convenient and faster, the practicability is higher, and along with the tightening of the bolt between the two semicircular rings, the wedge block pushes the first connecting disc and the second connecting disc to be relatively extruded through the first inclined plane and the second inclined plane, thereby the sealed cushion of compression, the tighter the bolt is screwed, and the interval between two semicircle rings of collar is less, leads to pressure big more, and the voussoir is used in the pressure of first connection pad and second connection pad big more, and sealing performance is better, does benefit to the use more.
Drawings
FIG. 1 is a schematic view of the overall structure of a silica gel injection molding apparatus according to the present invention;
FIG. 2 is a cross-sectional view of a mounting ring of a silica gel injection molding apparatus of the present invention;
FIG. 3 is an exploded view of a mounting ring, a die head and an extrusion cylinder of a silica gel injection molding apparatus of the present invention;
FIG. 4 is an enlarged view of A in FIG. 3 of a silicone injection molding apparatus of the present invention;
FIG. 5 is a front view of a mounting ring of a silicone injection molding apparatus of the present invention;
FIG. 6 is a schematic diagram of the internal structure of an extrusion molding barrel and a storage barrel of the silica gel injection molding device according to the present invention.
In the figure: 1. a base; 2. supporting legs; 3. an extrusion molding cylinder; 4. a die head; 5. a storage cylinder; 6. a top cover; 7. a handle; 8. an injection valve; 9. a support; 10. a motor; 11. a mounting structure; 12. a mounting ring; 13. a first splice tray; 14. a second connecting disc; 15. a wedge block; 16. a first inclined plane; 17. a second inclined plane; 18. a material pushing shaft; 19. a helical blade; 20. a stirring mechanism; 21. a stirring shaft; 22. a stirring blade; 23. a shaft seat; 24. a driven gear; 25. a drive gear.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-6, a silica gel injection molding device comprises a base 1, an extrusion molding cylinder 3 is fixedly installed on the upper portion of the base 1 through support legs 2, a die head 4 is arranged at one end of the extrusion molding cylinder 3, a storage cylinder 5 is fixedly installed at a position, close to the other end, of the outer portion of the extrusion molding cylinder 3, a top cover 6 is movably installed on the upper portion of the storage cylinder 5, a handle 7 is fixedly installed at a middle position of the upper portion of the top cover 6, an injection valve 8 is fixedly installed at one side of the upper portion of the top cover 6, a motor 10 is fixedly installed at a position, located at one side of the extrusion molding cylinder 3, of the upper portion of the base 1 through a support 9, an installation structure 11 is arranged between the die head 4 and the extrusion molding cylinder 3, a material pushing shaft 18 is rotatably connected at a central position of the inner portion of the extrusion molding cylinder 3, a spiral blade 19 is fixedly connected;
the mounting structure 11 comprises a mounting ring 12, a first connecting disc 13, a second connecting disc 14, a wedge block 15, a first inclined plane 16 and a second inclined plane 17, the first connecting disc 13 is fixedly connected to one end of the die head 4, the second connecting disc 14 is fixedly connected to one end of the extrusion cylinder 3, the mounting ring 12 is sleeved outside the first connecting disc 13 and the second connecting disc 14, the first inclined plane 16 is arranged at the edge of one side of the first connecting disc 13, the second inclined plane 17 is arranged at the edge of one side of the second connecting disc 14, and the wedge block 15 is fixedly mounted inside the mounting ring 12; the wedge 15 has a V-shaped cross section, and the surface gradient of the wedge 15 is equal to the gradient of the first inclined surface 16 and the second inclined surface 17; a positioning column is fixedly arranged on the other side of the first connecting disc 13, a positioning hole is formed in the surface of the other side of the second connecting disc 14, the positioning column is matched with the positioning hole in a matched mode, and the positioning column and the positioning hole can play a role in positioning and fixing conveniently; the opposite surfaces of the first connecting disc 13 and the second connecting disc 14 are both connected with a sealing rubber gasket in a gluing mode, the minimum width of the wedge block 15 is smaller than the total thickness of the first connecting disc 13 and the second connecting disc 14, and the sealing rubber gasket can play a role in improving the sealing performance; the mounting ring 12 is composed of two semicircular rings, two ends of each semicircular ring are provided with a convex block, a bolt penetrates through the convex blocks at the two ends of each semicircular ring, and the bolt can play a role in fixing the two semicircular rings; the stirring mechanism 20 comprises a stirring shaft 21, stirring blades 22, a shaft seat 23, a driven gear 24 and a driving gear 25, the stirring shaft 21 is rotatably connected to the inner center position of the storage cylinder 5 through the shaft seat 23, the stirring blades 22 are fixedly connected to the outer part of the stirring shaft 21, one end of the stirring shaft 21 penetrates through the storage cylinder 5 and is fixedly connected with the driven gear 24, and the driving gear 25 is fixedly connected to the outer part of the material pushing shaft 18; the driving gear 25 is in meshed connection with the driven gear 24, the size of the driving gear 25 is larger than that of the driven gear 24, the rotating speed of the driven gear 24 can be increased, and the stirring effect is improved.
A molding method of silica gel injection molding equipment specifically comprises the following steps:
the method comprises the following steps: firstly, connecting an injection valve 8 with an external silica gel injection pump to ensure that liquid silica gel enters the storage cylinder 5 through the injection valve 8;
step two: when the motor 10 works, an output shaft of the motor drives the material pushing shaft 18 to rotate, the material pushing shaft 18 drives the helical blade 19 to rotate, meanwhile, the material pushing shaft 18 also drives the driving gear 25 to rotate, the driving gear 25 drives the driven gear 24 to rotate, the driven gear 24 drives the stirring shaft 21 to rotate, and the stirring shaft 21 drives the stirring blade 22 to rotate, so that the liquid silica gel in the storage cylinder 5 is stirred;
step three: while stirring, part of the liquid silica gel enters the extrusion molding barrel 3 through the bottom of the storage barrel 5, the liquid silica gel enters the die head 4 through the extrusion molding barrel 3 along with the rotation of the spiral blade 19 driven by the pushing shaft 18, and then is extruded through the die head 4, and the liquid silica gel after the foundation is solidified through external vulcanization, cooling and other equipment, so as to complete silica gel injection molding;
step four: the shape of the silica gel injection depends on the shape of the die head 4, the die head 4 needs to be replaced when the shape needs to be replaced, when the die head 4 is replaced, firstly, the bolts between the two semicircular ring bumps of the mounting ring 12 are rotated, after the bolts are taken down, the mounting ring 12 is detached, then, the first connecting disc 13 and the second connecting disc 14 of the die head 4 can be separated, and the die head 4 is detached;
step five: inserting a new die head 4 into a positioning hole of a second connecting disc 14 through a positioning column of a first connecting disc 13, sleeving two semicircular rings of a mounting ring 12 outside the first connecting disc 13 and the second connecting disc 14, penetrating a bolt, and then screwing the bolt, wherein along with screwing of the bolt, a wedge block 15 pushes the first connecting disc 13 and the second connecting disc 14 to be relatively extruded through a first inclined surface 16 and a second inclined surface 17, so that a sealing rubber gasket is compressed, the tighter the bolt is, the smaller the distance between the two semicircular rings of the mounting ring 12 is, the larger the pressure is caused to be, and the larger the pressure applied to the first connecting disc 13 and the second connecting disc 14 by the wedge block 15 is.
According to the invention, by arranging the stirring mechanism 20, the stirring shaft 21 drives the stirring blades 22 to rotate, so that the liquid silica gel in the storage cylinder 5 is stirred, the liquid silica gel stored in the storage cylinder 5 can be stirred, the phenomenon of non-uniformity of precipitation, layering and the like of the liquid silica gel is avoided, and the defect of influence on the quality of an injection-molded silica gel product is avoided; the driving gear 25 is matched with the driven gear 24, the driving gear 25 rotates along with the rotation of the pushing shaft 18, so that the driven gear 24 is driven to rotate, the driven gear 24 drives the stirring shaft 21 to rotate, power equipment does not need to be added, the structure is simpler, the stirring mechanism 20 can be ensured to operate while pushing materials, and the driving gear 25 is larger than the driven gear 24, so that the rotating speed of the driven gear 24 is greatly increased, and the stirring effect is better; by arranging the mounting structure 11, when the die head 4 is replaced, firstly, the bolts between the two semicircular ring convex blocks of the mounting ring 12 are rotated, after the bolts are taken down, the mounting ring 12 is disassembled, then the first connecting disc 13 and the second connecting disc 14 of the die head 4 can be separated, the work of disassembling the die head 4 is completed, a new die head 4 is inserted into the positioning hole of the second connecting disc 14 through the positioning column of the first connecting disc 13, then the two semicircular rings of the mounting ring 12 are sleeved outside the first connecting disc 13 and the second connecting disc 14, the bolts are penetrated, and then the bolts are tightened, compared with the traditional mode of directly fixing through flange connection, the time and the energy for disassembling and assembling a plurality of bolts are greatly reduced, the operation is more convenient and rapid, the practicability is higher, and along with the tightening of the bolts between the two semicircular rings, the wedge block 15 pushes the first connecting disc 13 and the second connecting disc 14 to extrude relatively through the first inclined plane 16 and the second inclined plane 17, thereby compression sealing cushion, the tighter the bolt is screwed, the smaller the interval between two semicircle rings of collar 12 is, and it is bigger to lead to pressure, and the pressure that voussoir 15 was used to first connection pad 13 and second connection pad 14 is bigger, and sealing performance is better, does benefit to the use more.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A silica gel injection molding equipment which characterized in that: including base (1), the upper portion of base (1) has an extrusion molding section of thick bamboo (3) through supporting leg (2) fixed mounting, the one end of extrusion molding section of thick bamboo (3) is equipped with die head (4), the outside of extrusion molding section of thick bamboo (3) is close to another end position fixed mounting and has storage cylinder (5), the upper portion movable mounting of storage cylinder (5) has top cap (6), the upper portion position fixed mounting placed in the middle of top cap (6) has handle (7), upper portion one side position fixed mounting of top cap (6) has injection valve (8), one side position that the upper portion of base (1) is located extrusion molding section of thick bamboo (3) has motor (10) through support (9) fixed mounting, be equipped with mounting structure (11) between die head (4) and extrusion molding section of thick bamboo (3), the inside central point of extrusion molding section of thick bamboo (3) puts the rotation and is connected with material pushing shaft (18), the outside fixedly connected with helical, the inside of storage cylinder (5) is equipped with rabbling mechanism (20), the other end that pushes up material axle (18) run through extrusion molding section of thick bamboo (3) and the output shaft fixed connection of motor (10).
2. The silica gel injection molding apparatus of claim 1, wherein: mounting structure (11) are including collar (12), first connection pad (13), second connection pad (14), voussoir (15), first inclined plane (16) and second inclined plane (17), first connection pad (13) fixed connection is in the one end of die head (4), second connection pad (14) fixed connection is in the one end of an extrusion molding section of thick bamboo (3), the outside at first connection pad (13) and second connection pad (14) is established in collar (12) cover, a side edge position at first connection pad (13) is seted up in first inclined plane (16), a side edge position at second connection pad (14) is seted up in second inclined plane (17), voussoir (15) fixed mounting is in the inside of collar (12).
3. The silica gel injection molding apparatus of claim 2, wherein: the wedge block (15) is V-shaped in cross section, and the surface gradient of the wedge block (15) is equal to the gradient of the first inclined surface (16) and the second inclined surface (17).
4. The silica gel injection molding apparatus of claim 2, wherein: and a positioning column is fixedly arranged on the other side of the first connecting disc (13), a positioning hole is formed in the surface of the other side of the second connecting disc (14), and the positioning column is matched with the positioning hole.
5. The silica gel injection molding apparatus of claim 2, wherein: the opposite surfaces of the first connecting disc (13) and the second connecting disc (14) are connected with sealing rubber gaskets in a gluing mode, and the minimum width of each wedge block (15) is smaller than the total thickness of the first connecting disc (13) and the second connecting disc (14).
6. The silica gel injection molding apparatus of claim 2, wherein: the mounting ring (12) is composed of two semicircular rings, the two ends of the two semicircular rings are respectively provided with a convex block, and a bolt penetrates through the convex blocks at the two ends of the two semicircular rings.
7. The silica gel injection molding apparatus of claim 1, wherein: rabbling mechanism (20) are including (mixing) shaft (21), stirring vane (22), axle bed (23), driven gear (24) and driving gear (25), inside central point that (mixing) shaft (21) pass through axle bed (23) and rotate to be connected in storage cylinder (5) puts, stirring vane (22) fixed connection is in the outside of (mixing) shaft (21), storage cylinder (5) and driven gear (24) fixed connection are run through to the one end of (mixing) shaft (21), driving gear (25) fixed connection is in the outside of pushing away material axle (18).
8. The silica gel injection molding apparatus of claim 7, wherein: the driving gear (25) is in meshed connection with the driven gear (24), and the size of the driving gear (25) is larger than that of the driven gear (24).
9. A molding method using the silica gel injection molding apparatus of claim 1, characterized in that the molding method specifically comprises the steps of:
the method comprises the following steps: firstly, connecting an injection valve (8) with an external silica gel injection pump to ensure that liquid silica gel enters the storage cylinder (5) through the injection valve (8);
step two: the motor (10) works, an output shaft of the motor drives the material pushing shaft (18) to rotate, the material pushing shaft (18) drives the spiral blade (19) to rotate, meanwhile, the material pushing shaft (18) also drives the driving gear (25) to rotate, the driving gear (25) drives the driven gear (24) to rotate, the driven gear (24) drives the stirring shaft (21) to rotate, and the stirring shaft (21) drives the stirring blade (22) to rotate to stir the liquid silica gel in the storage cylinder (5);
step three: when stirring, part of the liquid silica gel enters the extrusion molding cylinder (3) through the bottom of the storage cylinder (5), the liquid silica gel enters the die head (4) through the extrusion molding cylinder (3) along with the rotation of the spiral blade (19) driven by the pushing shaft (18), and then is extruded out through the die head (4), and the liquid silica gel after the base is solidified through external vulcanization, cooling and other equipment, so that the silica gel injection molding is completed;
step four: the shape of the silica gel injection depends on the shape of the die head (4), the die head (4) needs to be replaced when the shape needs to be replaced, when the die head (4) needs to be replaced, firstly, the bolts between the two semicircular ring bumps of the mounting ring (12) are rotated, after the bolts are taken down, the mounting ring (12) is detached, then, the first connecting disc (13) and the second connecting disc (14) of the die head (4) can be separated, and the die head (4) is detached;
step five: inserting a new die head (4) into a positioning hole of a second connecting disc (14) through a positioning column of a first connecting disc (13), sleeving two semicircular rings of a mounting ring (12) outside the first connecting disc (13) and the second connecting disc (14), penetrating a bolt, and then screwing the bolt, wherein along with screwing of the bolt, a wedge block (15) pushes the first connecting disc (13) and the second connecting disc (14) to be relatively extruded through a first inclined surface (16) and a second inclined surface (17), so that a sealing rubber gasket is compressed, the closer the bolt is, the smaller the distance between the two semicircular rings of the mounting ring (12) is, the higher the pressure is caused, and the higher the pressure applied to the first connecting disc (13) and the second connecting disc (14) by the wedge block (15) is.
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| CN202110069992.3A CN112895384A (en) | 2021-01-19 | 2021-01-19 | Silica gel injection molding equipment and molding method thereof |
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| CN202110069992.3A CN112895384A (en) | 2021-01-19 | 2021-01-19 | Silica gel injection molding equipment and molding method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114986840A (en) * | 2022-04-27 | 2022-09-02 | 南京飞翼建材机械有限公司 | Multi-sealing mechanism of double-shaft stirring extruder and sealing method thereof |
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