CN110919975A - Plastic injection molding equipment - Google Patents

Plastic injection molding equipment Download PDF

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Publication number
CN110919975A
CN110919975A CN201911312152.4A CN201911312152A CN110919975A CN 110919975 A CN110919975 A CN 110919975A CN 201911312152 A CN201911312152 A CN 201911312152A CN 110919975 A CN110919975 A CN 110919975A
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CN
China
Prior art keywords
cavity
sliding
injection molding
template
fixedly connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201911312152.4A
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Chinese (zh)
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CN110919975B (en
Inventor
吴博文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan fulihan Rubber & Plastic Technology Co., Ltd
Original Assignee
Yongkang Benyuan Plastic Products Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yongkang Benyuan Plastic Products Co Ltd filed Critical Yongkang Benyuan Plastic Products Co Ltd
Priority to CN201911312152.4A priority Critical patent/CN110919975B/en
Publication of CN110919975A publication Critical patent/CN110919975A/en
Priority to JP2020071881A priority patent/JP6811927B1/en
Application granted granted Critical
Publication of CN110919975B publication Critical patent/CN110919975B/en
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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
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • 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
    • B29C45/2608—Mould seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/66—Mould opening, closing or clamping devices mechanical
    • 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
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/7613—Measuring, controlling or regulating the termination of flow of material into the mould
    • 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
    • B29C45/84—Safety devices

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses plastic injection molding equipment, which comprises a base, wherein the upper end of the base is fixedly connected with a fixed template, a sliding template is arranged on the right side of the fixed template in a sliding way, an injection molding cavity with a leftward opening is arranged in the sliding template, a sealing structure is arranged between the fixed template and the sliding template, the left end of the sliding template is abutted against the fixed template, the front side opening and the rear side opening of the injection molding cavity are sealed by two sealing plates in the sealing structure, the invention controls the start of the material injection structure by limiting the position of the sliding template, avoids starting injection molding when an injection molding cavity is not sealed, and uniformly feeds materials into the injection molding cavity through three feeding channels, and then can improve the success rate of injection molding, can carry out scram manually when the sliding template removes, guarantee the security of operation.

Description

Plastic injection molding equipment
Technical Field
The invention relates to the field of plastic molding, in particular to plastic injection molding equipment.
Background
The plastic molding is a process of making various forms of plastics into products or blanks with required shapes, the injection molding is a process of putting the plastics melted by an injection machine into a mold under the thrust action of a plug or a screw and obtaining the products through cooling, the existing injection molding machine often has the conditions of poor sealing and production failure caused by uneven injection of the plastics, and the products are inconvenient to take out of the mold.
Disclosure of Invention
The technical problem is as follows:
the existing injection molding machine often has the conditions that the product is not produced due to poor sealing and uneven injection of plastic, and the product is inconvenient to take out of a mold.
In order to solve the problems, the present example designs a plastic injection molding device, which comprises a base, wherein a fixed template is fixedly connected to the upper end of the base, a sliding template is slidably arranged on the right side of the fixed template, an injection molding cavity with a leftward opening is arranged in the sliding template, a sealing structure is arranged between the fixed template and the sliding template, the left end of the sliding template is abutted against the fixed template, openings on the front side and the rear side of the injection molding cavity are sealed by two sealing plates in the sealing structure, a material injection structure is arranged in the sliding template, the material injection structure is communicated with the injection molding cavity through three feeding channels, the material injection structure uniformly injects plastic into the injection molding cavity through the three feeding channels, a limiting structure is arranged between the sliding template and the base, and the material injection structure is electrically connected with the limiting structure, work as sliding template with behind the fixed die plate offsets, switch in the limit structure starts, just can start this moment annotate the material structure, base upper end bilateral symmetry has just linked firmly the bracing piece, and is left the bracing piece is held the fixed die plate, right side the bracing piece with be equipped with the feed structure between the base, be equipped with the screw hole of opening right in the sliding template, screw hole female connection has feed screw, the feed screw right-hand member connect in the feed structure, the feed structure is through the drive feed screw drives the sliding template horizontal slip. Beneficially, the feeding structure comprises a belt groove arranged between the base and the supporting rod on the right side, a sliding wheel is arranged in the belt groove in a rotating and sliding manner, a spline hole with a leftward opening is formed in the sliding wheel, a spline shaft is connected in the spline hole in a spline manner, a feeding motor is fixedly arranged in the inner wall of the left side of the belt groove, the left end of the spline shaft is in power connection with the feeding motor, a clutch pulley is arranged in the belt groove in a rotating manner, a connecting hole with a leftward opening is formed in the clutch pulley, the sliding wheel slides into the connecting hole and is connected with the clutch pulley, a connecting pulley is rotatably arranged on the upper side of the clutch pulley, a driving belt is connected between the clutch pulley and the connecting pulley, the right end of the feeding screw is fixedly connected with the connecting pulley, and when the sliding wheel is connected with the, and then drive through the integral key shaft the movable pulley rotates, and then drive clutch pulley rotates, and then drive through the drive belt connect the band pulley and rotate, and then through feed screw drive the sliding template slides.
Beneficially, a communicating cavity is arranged in the inner wall of the right side of the belt groove, a bidirectional gear is rotationally arranged in the communicating cavity, guide cavities are symmetrically and communicated in the inner walls of the front side and the rear side of the communicating cavity, the inner wall of the left side of the guide cavity on the front side is communicated with the belt groove, a manual rod is slidably arranged in the guide cavities, one end, close to the bidirectional gear, of the manual rod is meshed with the bidirectional gear, the left end of the manual rod on the front side is rotatably connected to the sliding wheel, the clutch pulley and the manual rod on the front side can slide relatively to push the manual rod on the front side to further drive the sliding wheel to slide leftwards, so that the sliding wheel is disconnected from the clutch pulley, transmission between the sliding wheel and the clutch pulley is stopped, further, the sliding of the sliding template can be scrammed, and meanwhile, the manual rod on the front side drives the bidirectional gear to rotate, and then the manual lever on the rear side is driven to slide rightwards, when the manual lever on the rear side is pushed, the bidirectional gear is driven to rotate, and then the manual lever on the front side is driven to slide rightwards, and then the sliding wheel is driven to slide rightwards and is connected with the clutch belt wheel again.
Beneficially, the sealing structure comprises grooves which are symmetrically arranged in the fixed mold plate in a front-back manner and are opposite in opening, communicating grooves which are symmetrically arranged in the sliding mold plate in the front-back manner and are opposite in opening are arranged in the sliding mold plate in the front-back manner, the grooves face the communicating grooves, the communicating grooves are communicated with the injection molding cavity, a sealing plate is rotationally arranged in the grooves, a rotating shaft is fixedly connected in the sealing plate, four gear cavities are arranged in the fixed mold plate, the four gear cavities are symmetrically arranged in the front-back manner and are vertically symmetrical, connecting gears are rotationally arranged in the gear cavities, the upper ends and the lower ends of the rotating shaft on the front side and the lower sides are respectively fixedly connected with the connecting gears on the upper side and the lower side, the gear cavities on the front side and the rear side are mutually close to one inner wall, the inner wall, the sliding rack is meshed with the connecting gear, a buffer spring is fixedly connected to the inner wall of the left side of the rack groove, the sliding rack slides into the rack groove to compress the buffer spring and buffer the sliding rack, the sliding template slides leftwards and drives the sliding rack to slide leftwards and extend into the rack groove, so that the buffer spring is compressed, meanwhile, the sliding rack drives the connecting gear to rotate, so that the rotating shaft is driven to rotate, the sealing plate is driven to rotate, and when the left end of the sliding template is supported against the fixed template, the sealing plate just rotates to the communicating groove and seals the injection molding cavity.
Beneficially, the material injection structure comprises a meshing cavity arranged in the sliding template, sector gears are symmetrically arranged in the meshing cavity in an up-down mode and rotate, a motor shaft is fixedly connected between the sector gears, a feeding motor is fixedly arranged in the inner wall of the upper side of the meshing cavity, the upper end of the motor shaft is in power connection with the feeding motor, straight gears are arranged at the left ends of the sector gears in a meshed mode, a symmetrical rotating shaft is fixedly connected at one end, away from each other, of the straight gears, a cavity is arranged in the inner wall of the lower side of the meshing cavity, the lower end of the symmetrical rotating shaft at the lower side extends into the cavity and is fixedly connected with a cam, a squeezing plate is arranged at the left end of the cam in a propping mode, three feeding channels are communicated between the injection molding cavity and the cavity, a transmission cavity is arranged in the inner wall of the upper side of, the intermittent driving belt wheel is provided with an intermittent driven belt wheel in a rotating mode on the left side, a transmission belt is connected between the intermittent driving belt wheel and the intermittent driven belt wheel, a reset screw is fixedly connected in the intermittent driven belt wheel, a material storage cavity is arranged in the inner wall of the left side of the meshing cavity, the inner wall of the lower side of the material storage cavity is communicated with the cavity, plastic melting raw materials are stored in the material storage cavity, a sliding plate is arranged in the material storage cavity in a sliding mode, the lower end of the reset screw is connected with the sliding plate in a threaded mode to start the feeding motor, the fan-shaped gear is driven to rotate through the motor shaft, the fan-shaped gear on the upper side drives the straight gear on the upper side to rotate, the intermittent driving belt wheel is driven to rotate through the transmission belt, the sliding plate is driven to slide down through the reset screw, and the, when the sector gear on the upper side is disengaged from the straight gear, the sector gear on the lower side is engaged with the straight gear, the symmetrical rotating shaft on the lower side drives the cam to rotate, so that the extrusion plate slides leftwards, and then the plastic melting raw materials in the cavity are extruded into the injection molding cavity through the feeding channel.
Preferably, a return spring is fixedly connected between the right end of the extrusion plate and the inner wall of the cavity, and the extrusion plate slides in a left-right reciprocating manner under the elastic force action of the return spring.
Preferably, a one-way valve is fixedly arranged in the feeding channel, and the one-way valve prevents the plastic molten raw material in the feeding channel from flowing back into the cavity.
Preferably, the transmission cavity is bilaterally symmetrical and rotationally provided with reset belt wheels, the upper end of the reset screw rod is fixedly connected with the left reset belt wheel, a reset belt is connected between the reset belt wheels, the right reset belt wheel is fixedly connected with a fixed shaft, the inner wall of the lower side of the transmission cavity is internally provided with a shaft hole which is communicated with the lower end of the fixed shaft, the lower end of the fixed shaft extends into the shaft hole, the fixed shaft is internally provided with a spring groove with a downward opening, the inner spline of the spring groove is connected with a sliding shaft, the upper end of the sliding shaft and the inner wall of the upper side of the spring groove are fixedly connected with an electromagnetic spring, the electromagnetic spring is electrified to push the sliding shaft to slide downwards and be in power connection with the feeding motor, the feeding motor is started at the moment and drive the sliding shaft to rotate with the fixed shaft, and, and then the sliding plate is driven to ascend and reset.
Beneficially, limit structure including set firmly in the spacing rack in the base up end, be equipped with the spacing chamber that the opening is decurrent in the sliding template, spacing intracavity rotates and is equipped with limit gear, limit gear lower extreme meshing in spacing rack, the limit gear internal connection has the connecting axle, the connecting axle front end rigid coupling has the dwang, the switch has been linked firmly on the inner wall of spacing chamber left side, switch electric connection in the feeding motor, the dwang with start during the switch contact the switch, just can start this moment the feeding motor.
The invention has the beneficial effects that: the invention controls the start of the material injection structure by limiting the position of the sliding template, avoids starting injection molding when the injection molding cavity is not sealed, and uniformly feeds materials into the injection molding cavity through three feeding channels, thereby improving the success rate of injection molding products, and ensuring the safety of operation by manually performing emergency stop when the sliding template moves.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a plastic injection molding apparatus according to the present invention;
FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;
FIG. 3 is an enlarged schematic view of "B" of FIG. 1;
FIG. 4 is an enlarged schematic view of "C" of FIG. 1;
FIG. 5 is an enlarged schematic view of "D" of FIG. 1;
FIG. 6 is an enlarged schematic view of "E" of FIG. 1;
FIG. 7 is a schematic view of the structure in the direction "F-F" of FIG. 2;
FIG. 8 is a schematic view of the structure in the direction "G-G" of FIG. 3;
FIG. 9 is a schematic view of the structure in the direction "H-H" of FIG. 6.
Detailed Description
The invention will now be described in detail with reference to fig. 1-9, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to plastic injection molding equipment, which comprises a base 11, wherein the upper end of the base 11 is fixedly connected with a fixed template 14, the right side of the fixed template 14 is provided with a sliding template 23 in a sliding way, an injection molding cavity 25 with a leftward opening is arranged in the sliding template 23, a sealing structure 101 is arranged between the fixed template 14 and the sliding template 23, the left end of the sliding template 23 is abutted against the fixed template 14, the front side and the rear side of the injection molding cavity 25 are sealed by two sealing plates 15 in the sealing structure 101 at the moment, a material injection structure 100 is arranged in the sliding template 23, the material injection structure 100 is communicated with the injection molding cavity 25 through three feeding channels 26, the material injection structure 100 uniformly injects plastic into the injection molding cavity 25 through the three feeding channels 26, a limiting structure 102 is arranged between the sliding template 23 and the base 11, and the material injection structure 100 is electrically connected with the limiting structure 102, when the sliding template 23 butts against the fixed template 14, the switch 58 in the limiting structure 102 is started, and at this time, the material injection structure 100 can be started, the upper end of the base 11 is bilaterally symmetrical and fixedly connected with the support rod 13, the support rod 13 on the left side supports the fixed template 14, the support rod 13 on the right side and the base 11 are provided with the feeding structure 103, the sliding template 23 is internally provided with a threaded hole 17 with a rightward opening, the threaded hole 17 is internally connected with the feeding screw 18, the right end of the feeding screw 18 is connected with the feeding structure 103, and the feeding structure 103 drives the sliding template 23 to slide leftward and rightward by driving the feeding screw 18.
According to the embodiment, the feeding structure 103 is described in detail below, the feeding structure 103 includes a belt groove 21 disposed between the base 11 and the right supporting rod 13, a sliding wheel 66 is disposed in the belt groove 21 for rotating and sliding, a spline hole 65 with a left opening is disposed in the sliding wheel 66, a spline shaft 64 is connected to the spline hole 65 through a spline, a feeding motor 22 is fixedly disposed in the inner wall of the left side of the belt groove 21, the left end of the spline shaft 64 is connected to the feeding motor 22 through power, a clutch pulley 63 is rotatably disposed in the belt groove 21, a connection hole 67 with a left opening is disposed in the clutch pulley 63, the sliding wheel 66 slides into the connection hole 67 and is connected to the clutch pulley 63, a connection pulley 19 is rotatably disposed on the upper side of the clutch pulley 63, and a driving belt 20 is connected between the clutch pulley 63 and the connection pulley 19, the right end of the feed screw 18 is fixedly connected with the connecting belt wheel 19, when the sliding wheel 66 is connected with the clutch belt wheel 63, the feed motor 22 is started, and then the spline shaft 64 drives the sliding wheel 66 to rotate, so as to drive the clutch belt wheel 63 to rotate, and further the drive belt 20 drives the connecting belt wheel 19 to rotate, and further the feed screw 18 drives the sliding template 23 to slide.
Beneficially, a communicating cavity 70 is arranged in the inner wall of the right side of the belt groove 21, a bidirectional gear 69 is rotatably arranged in the communicating cavity 70, guide cavities 71 are symmetrically and communicated in the inner walls of the front and rear sides of the communicating cavity 70, the inner wall of the left side of the front side of the guide cavity 71 is communicated with the belt groove 21, a manual lever 68 is slidably arranged in the guide cavity 71, one end of the manual lever 68 close to the bidirectional gear 69 is engaged with the bidirectional gear 69, the left end of the manual lever 68 at the front side is rotatably connected to the pulley 66, the clutch pulley 63 and the manual lever 68 at the front side can relatively slide to push the manual lever 68 at the front side to drive the pulley 66 to slide leftwards, so that the pulley 66 is disconnected from the clutch pulley 63, at this time, transmission between the pulley 66 and the clutch pulley 63 is stopped, and further, so that the sliding of the sliding template 23 can be abruptly stopped, meanwhile, the manual lever 68 at the front side drives the bidirectional gear 69 to rotate, so as to drive the manual lever 68 at the rear side to slide rightwards, and when the manual lever 68 at the rear side is pushed, the bidirectional gear 69 is driven to rotate, so as to drive the manual lever 68 at the front side to slide rightwards, so as to drive the sliding wheel 66 to slide rightwards and be connected with the clutch pulley 63 again, because the manual lever 68 needs to be manually controlled, the manual lever 68 is manually pushed faster than the manual lever 68 is pulled, so that the sliding time of the sliding wheel 66 during emergency stop of the sliding template 23 can be reduced, and the sliding template 23 can rapidly respond during emergency stop.
According to an embodiment, the sealing structure 101 is described in detail below, the sealing structure 101 includes front and back symmetric grooves 12 with opposite openings in the fixed mold plate 14, front and back symmetric communicating grooves 16 with opposite openings in the sliding mold plate 23, the grooves 12 are opposite to the communicating grooves 16, the communicating grooves 16 are communicated with the injection molding cavity 25, a sealing plate 15 is rotatably disposed in the grooves 12, a rotating shaft 24 is fixedly connected in the sealing plate 15, four gear cavities 31 are disposed in the fixed mold plate 14, the four gear cavities 31 are front and back symmetric and top and bottom symmetric, a connecting gear 30 is rotatably disposed in the gear cavity 31, the upper and lower ends of the rotating shaft 24 at the front and back sides are respectively fixedly connected to the connecting gears 30 at the upper and lower sides, the gear cavities 31 at the front and back sides are mutually close to one side inner wall, and are communicated with an opening rightward rack groove 33, the left end of the sliding template 23 is fixedly connected with four sliding racks 32, the four sliding racks 32 are respectively opposite to the four rack grooves 33, the sliding rack 32 is engaged with the connecting gear 30, the inner wall of the left side of the rack groove 33 is fixedly connected with a buffer spring 34, the sliding rack 32 compresses the buffer spring 34 and buffers the sliding rack 32 when sliding into the rack slot 33, the sliding template 23 slides leftwards and drives the sliding rack 32 to slide leftwards and extend into the rack slot 33, thereby compressing the buffer spring 34, and simultaneously the sliding rack 32 rotates the connecting gear 30, thereby driving the rotating shaft 24 to rotate and further driving the sealing plate 15 to rotate, when the left end of the sliding template 23 is abutted against the fixed template 14, the sealing plate 15 is pivoted into the connecting channel 16 and seals the injection molding chamber 25.
According to the embodiment, it is right below that annotate material structure 100 explains in detail, annotate material structure 100 including locating meshing chamber 41 in the sliding die plate 23, the interior longitudinal symmetry of meshing chamber 41 just rotates and is equipped with sector gear 39, linked firmly motor shaft 40 between sector gear 39, meshing chamber 41 upside inner wall internal fixation has feed motor 42, motor shaft 40 upper end power connect in feed motor 42, sector gear 39 left end meshing is equipped with straight gear 37, straight gear 37 keeps away from one end each other and has linked firmly symmetrical pivot 38, be equipped with cavity 29 in the meshing chamber 41 downside inner wall, downside symmetrical pivot 38 lower extreme extends to in the cavity 29 and has linked firmly cam 36, what cam 36 left end offseted is equipped with stripper plate 28, three feedstock channel 26 communicate in mould plastics chamber 25 with between the cavity 29, the inner wall of the upper side of the meshing cavity 41 is internally provided with a transmission cavity 53, the upper end of the symmetrical rotating shaft 38 at the upper side extends into the transmission cavity 53 and is fixedly connected with an intermittent driving belt pulley 49, the left side of the intermittent driving belt pulley 49 rotates and is provided with an intermittent driven belt pulley 51, a transmission belt 50 is connected between the intermittent driving belt pulley 49 and the intermittent driven belt pulley 51, a reset screw 55 is fixedly connected into the intermittent driven belt pulley 51, the inner wall of the left side of the meshing cavity 41 is internally provided with a storage cavity 56, the inner wall of the lower side of the storage cavity 56 is communicated with the cavity 29, plastic melting raw materials are stored in the storage cavity 56, a sliding plate 54 is arranged in the storage cavity 56 in a sliding manner, the lower end of the reset screw 55 is in threaded connection with the sliding plate 54, the feeding motor 42 is started, the fan-shaped gear 39 is driven to rotate by, and then drive through the upside symmetry pivot 38 intermittent type driving pulley 49 rotates, and then pass through drive belt 50 drives intermittent type driven pulley 51 rotates, and then through reset screw 55 drives slide 54 gliding and squeeze into plastics melting raw materials in the cavity 29, when the upside sector gear 39 with spur gear 37 breaks away from the meshing, the downside sector gear 39 with spur gear 37 meshes, drives through the downside symmetry pivot 38 this moment cam 36 rotates, and then promotes the stripper plate 28 slides to the left, and then will plastics melting raw materials in the cavity 29 squeeze into through feed channel 26 in the injection molding chamber 25.
Advantageously, a return spring 35 is fixedly connected between the right end of the squeezing plate 28 and the inner wall of the cavity 29, and the squeezing plate 28 slides back and forth left and right under the action of the elastic force of the return spring 35.
Advantageously, a one-way valve 27 is fixedly arranged in the feeding channel 26, and the one-way valve 27 prevents the plastic molten material in the feeding channel 26 from flowing back into the cavity 29.
Beneficially, the transmission cavity 53 is provided with the reset belt wheels 52 in a bilaterally symmetrical and rotating manner, the upper end of the reset screw 55 is fixedly connected to the reset belt wheel 52 on the left side, the reset belt 48 is connected between the reset belt wheels 52, the reset belt wheel 52 on the right side is fixedly connected with the fixed shaft 47, the inner wall of the lower side of the transmission cavity 53 is provided with the shaft hole 46 in a communicating manner, the lower end of the fixed shaft 47 extends into the shaft hole 46, the fixed shaft 47 is provided with the spring groove 45 with a downward opening, the spring groove 45 is internally splined with the sliding shaft 43, the upper end of the sliding shaft 43 and the inner wall of the upper side of the spring groove 45 are fixedly connected with the electromagnetic spring 44, the electromagnetic spring 44 is electrified to further push the sliding shaft 43 to slide and be in power connection with the feeding motor 42, at this time, the feeding motor, the reset screw 55 is driven to rotate by the belt transmission between the reset belt wheel 52 and the reset belt 48, and the slide plate 54 is driven to ascend and reset.
According to an embodiment, the limiting structure 102 is described in detail below, the limiting structure 102 includes a limiting rack 57 fixedly disposed in the upper end surface of the base 11, a limiting cavity 62 with a downward opening is disposed in the sliding template 23, a limiting gear 60 is rotatably disposed in the limiting cavity 62, the lower end of the limiting gear 60 is meshed with the limiting rack 57, a connecting shaft 61 is fixedly connected in the limiting gear 60, a rotating rod 59 is fixedly connected to the front end of the connecting shaft 61, a switch 58 is fixedly connected to the inner wall of the left side of the limiting cavity 62, the switch 58 is electrically connected to the feeding motor 42, the switch 58 is started when the rotating rod 59 contacts with the switch 58, and the feeding motor 42 can be started at this time.
The following describes in detail the steps of using a plastic injection molding apparatus according to the present disclosure with reference to fig. 1 to 9:
initially, the sliding die plate 23 is located at the right limit position, the sealing plate 15 is in the open state, the rotating rod 59 is not in contact with the switch 58, the sliding plate 54 is located at the upper limit position, the squeezing plate 28 is located at the right limit position, the upper spur gear 37 and the sector gear 39 are just engaged, the lower spur gear 37 and the sector gear 39 are just disengaged, and the sliding wheel 66 and the clutch pulley 63 are in the connected state.
When the manual sliding die plate is used, the feeding motor 22 is started, the sliding wheel 66 is driven to rotate through the spline shaft 64, the clutch belt wheel 63 is driven to rotate, the connecting belt wheel 19 is driven to rotate through the driving belt 20, the sliding die plate 23 is driven to slide leftwards through the feeding screw 18, the front manual rod 68 can be manually pushed, the sliding wheel 66 is driven to slide leftwards and is disconnected from the clutch belt wheel 63, the sliding die plate 23 stops sliding leftwards at the moment, and the rear manual rod 68 is driven to slide rightwards through the bidirectional gear 69 at the moment.
When the sliding template 23 slides leftwards, the limiting gear 60 is driven to rotate through the limiting rack 57, and then the rotating rod 59 is driven to rotate through the connecting shaft 61.
When the sliding template 23 slides leftwards, the sliding rack 32 extends into the buffer spring 34 and compresses the rack groove 33, meanwhile, the sliding rack 32 drives the connecting gear 30 to rotate, and further drives the sealing plate 15 to rotate through the buffer spring 34, when the left end of the sliding template 23 abuts against the fixed template 14, the sealing plate 15 just rotates into the communicating groove 16 and completely seals the injection molding cavity 25, and at the moment, the rotating rod 59 just abuts against the switch 58.
At this time, the feeding motor 22 is stopped and the feeding motor 42 can be started, and then the motor shaft 40 drives the sector gear 39 to rotate, and then the sector gear 39 on the upper side drives the spur gear 37 on the upper side to rotate, and then the symmetrical rotating shaft 38 on the upper side drives the intermittent driving pulley 49 to rotate, and then the driving belt 50 drives the intermittent driven pulley 51 to rotate, and then the reset screw 55 drives the sliding plate 54 to slide downwards, so as to push the plastic melting raw material in the material storage chamber 56 into the cavity 29, after the sector gear 39 on the upper side is disengaged from the spur gear 37, the sector gear 39 on the lower side is engaged with the spur gear 37, at this time, the symmetrical rotating shaft 38 on the lower side drives the cam 36 to rotate, and the extrusion plate 28 is pushed to slide back and forth under the elastic force of the reset spring 35, after the extrusion plate 28 slides left and right for one cycle, the plastic melting raw material in the, at this time, the lower sector gear 39 is disengaged from the spur gear 37, and the upper sector gear 39 is re-engaged with the spur gear 37 until the injection molding cavity 25 is filled with the molten plastic material.
When the sliding plate 54 slides to the lower limit position, the electromagnetic spring 44 is energized to push the sliding shaft 43 to slide downwards and is in power connection with the feeding motor 42, at this time, the feeding motor 42 drives the reset screw 55 to rotate reversely through the belt transmission between the sliding shaft 43, the fixed shaft 47, the reset belt wheel 52 and the reset belt 48, and further drives the sliding plate 54 to ascend, and at this time, the feeding motor 42 does not drive the motor shaft 40.
After the plastic molten raw material is cooled and solidified in the injection molding cavity 25, the feeding motor 22 is started reversely, and then the sliding template 23 is driven to slide rightwards, so that the injection molding cavity 25 can be opened, and at the moment, the molded product can be taken out.
The invention has the beneficial effects that: the invention controls the start of the material injection structure by limiting the position of the sliding template, avoids starting injection molding when the injection molding cavity is not sealed, and uniformly feeds materials into the injection molding cavity through three feeding channels, thereby improving the success rate of injection molding products, and ensuring the safety of operation by manually performing emergency stop when the sliding template moves.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims (9)

1. The utility model provides a plastics injection moulding equipment, includes the base, its characterized in that: the upper end of the base is fixedly connected with a fixed template, the right side of the fixed template is provided with a sliding template in a sliding manner, an injection molding cavity with a left opening is arranged in the sliding template, a sealing structure is arranged between the fixed template and the sliding template, the left end of the sliding template is abutted against the fixed template, and the front and rear openings of the injection molding cavity are sealed by two sealing plates in the sealing structure; a material injection structure is arranged in the sliding template, the material injection structure is communicated with the injection molding cavity through three feeding channels, and the material injection structure uniformly injects plastics into the injection molding cavity through the three feeding channels; a limiting structure is arranged between the sliding template and the base, the material injection structure is electrically connected to the limiting structure, and the material injection structure can be started only when a switch in the limiting structure is started; the upper end of the base is bilaterally symmetrical and fixedly connected with a support rod, the support rod on the left side supports the fixed template, and a feeding structure is arranged between the support rod on the right side and the base; be equipped with the screw hole of opening right in the sliding template, screw hole female connection has feed screw, feed screw right-hand member connect in feed the structure.
2. A plastic injection molding apparatus as claimed in claim 1, wherein: the feeding structure comprises a belt groove arranged between the base and the supporting rod on the right side, a sliding wheel is arranged in the belt groove in a rotating and sliding manner, a spline hole with a leftward opening is formed in the sliding wheel, a spline shaft is connected to the inner spline of the spline hole, a feeding motor is fixedly arranged in the inner wall of the left side of the belt groove, and the left end of the spline shaft is dynamically connected to the feeding motor; the belt groove internal rotation is equipped with the separation and reunion band pulley, be equipped with the connecting hole of opening left in the separation and reunion band pulley, separation and reunion band pulley upside rotates and is equipped with the connection band pulley, the separation and reunion band pulley with be connected with the drive belt between the connection band pulley, the feed screw right-hand member link firmly in connect the band pulley.
3. A plastic injection molding apparatus as claimed in claim 2, wherein: a communicating cavity is arranged in the inner wall of the right side of the belt groove, a bidirectional gear is rotationally arranged in the communicating cavity, guide cavities are symmetrically and communicated in the inner walls of the front side and the rear side of the communicating cavity, the inner wall of the left side of the guide cavity on the front side is communicated with the belt groove, a manual rod is slidably arranged in the guide cavities, and one end, close to the bidirectional gear, of the manual rod is meshed with the bidirectional gear; the left end of the front manual lever is rotationally connected with the sliding wheel, and the clutch belt wheel and the front manual lever can slide relatively.
4. A plastic injection molding apparatus as claimed in claim 1, wherein: the sealing structure comprises grooves which are arranged in the fixed template in a front-back symmetrical mode and are opposite in opening, the sliding template is internally provided with communicating grooves which are arranged in the front-back symmetrical mode and are opposite in opening, the grooves face the communicating grooves, and the communicating grooves are communicated with the injection molding cavity; a sealing plate is rotationally arranged in the groove, a rotating shaft is fixedly connected in the sealing plate, four gear cavities are arranged in the fixing plate, the four gear cavities are symmetrical front and back and are symmetrical up and down, connecting gears are rotationally arranged in the gear cavities, and the upper ends and the lower ends of the rotating shaft at the front side and the rear side are fixedly connected to the connecting gears at the upper side and the lower side respectively; the gear cavities on the front side and the rear side are mutually close to one inner wall of one side and are communicated with one another to form a right rack groove, the left end of the sliding template is fixedly connected with four sliding racks, the four sliding racks are respectively opposite to the four rack grooves, and the sliding racks are meshed with the connecting gear; and the inner wall of the left side of the rack groove is fixedly connected with a buffer spring.
5. A plastic injection molding apparatus as claimed in claim 1, wherein: the material injection structure comprises an engagement cavity arranged in the sliding template, sector gears are arranged in the engagement cavity in an up-down symmetrical mode and in a rotating mode, a motor shaft is fixedly connected between the sector gears, a feeding motor is fixedly arranged in the inner wall of the upper side of the engagement cavity, and the upper end of the motor shaft is in power connection with the feeding motor; the left end of the sector gear is meshed with a straight gear, one end of the straight gear, which is far away from the straight gear, is fixedly connected with a symmetrical rotating shaft, a cavity is arranged in the inner wall of the lower side of the meshing cavity, the lower end of the symmetrical rotating shaft on the lower side extends into the cavity and is fixedly connected with a cam, the left end of the cam is provided with an extrusion plate in a propping manner, and three feeding channels are communicated between the injection molding cavity and the cavity; a transmission cavity is arranged in the inner wall of the upper side of the meshing cavity, the upper end of the symmetrical rotating shaft on the upper side extends into the transmission cavity and is fixedly connected with an intermittent driving belt wheel, an intermittent driven belt wheel is rotatably arranged on the left side of the intermittent driving belt wheel, and a transmission belt is connected between the intermittent driving belt wheel and the intermittent driven belt wheel; the intermittent type driven pulley is internally and fixedly connected with a reset screw rod, a material storage cavity is arranged in the inner wall of the left side of the meshing cavity, the inner wall of the lower side of the material storage cavity is communicated with the cavity, plastic melting raw materials are stored in the material storage cavity, a sliding plate is arranged in the material storage cavity in a sliding manner, and the lower end of the reset screw rod is in threaded connection with the sliding plate.
6. A plastic injection molding apparatus as claimed in claim 5, wherein: and a return spring is fixedly connected between the right end of the extrusion plate and the inner wall of the cavity.
7. A plastic injection molding apparatus as claimed in claim 5, wherein: a one-way valve is fixedly arranged in the feeding channel.
8. A plastic injection molding apparatus as claimed in claim 5, wherein: reset belt wheels are symmetrically arranged in the transmission cavity in a left-right mode in a rotating mode, the upper end of each reset screw is fixedly connected to the corresponding reset belt wheel on the left side, and a reset belt is connected between the reset belt wheels; a fixed shaft is fixedly connected in the reset belt wheel on the right side, a shaft hole is formed in the inner wall of the lower side of the transmission cavity in a communicated manner, the lower end of the fixed shaft extends into the shaft hole, a spring groove with a downward opening is formed in the fixed shaft, and a sliding shaft is connected in the spring groove through a spline; and an electromagnetic spring is fixedly connected between the upper end of the sliding shaft and the inner wall of the upper side of the spring groove.
9. A plastic injection molding apparatus as claimed in claim 1, wherein: the limiting structure comprises a limiting rack fixedly arranged in the upper end face of the base, a limiting cavity with a downward opening is formed in the sliding template, a limiting gear is arranged in the limiting cavity in a rotating mode, the lower end of the limiting gear is meshed with the limiting rack, a connecting shaft is fixedly connected into the limiting gear, the front end of the connecting shaft is fixedly connected with a rotating rod, a switch is fixedly connected onto the inner wall of the left side of the limiting cavity, and the switch is electrically connected with the feeding motor.
CN201911312152.4A 2019-12-18 2019-12-18 Plastic injection molding equipment Active CN110919975B (en)

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CN201911312152.4A CN110919975B (en) 2019-12-18 2019-12-18 Plastic injection molding equipment
JP2020071881A JP6811927B1 (en) 2019-12-18 2020-04-13 Injection molding equipment

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CN114192709B (en) * 2021-11-23 2024-04-16 杭州杭海实业有限公司 High-precision cold roll forming system and method for ball cage retainer
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CN116512383B (en) * 2023-07-03 2023-09-15 福建省德化县鹏坤陶瓷有限公司 Vacuum grouting equipment for ceramic production

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CN206589302U (en) * 2017-03-16 2017-10-27 宁波众拓模具科技有限公司 A kind of automobile plastic injection mould of products with stable circulation function
CN110116478A (en) * 2019-06-19 2019-08-13 易伟青 A kind of injection mold with degassing function

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Publication number Priority date Publication date Assignee Title
US5478520A (en) * 1989-10-27 1995-12-26 Mitsubishi Jukogyo Kabushiki Kaisha Process for injection molding and apparatus therefor
CN206589302U (en) * 2017-03-16 2017-10-27 宁波众拓模具科技有限公司 A kind of automobile plastic injection mould of products with stable circulation function
CN110116478A (en) * 2019-06-19 2019-08-13 易伟青 A kind of injection mold with degassing function

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