CN113650249A - Mold closing mechanism and method of plastic injection molding machine for preservation box - Google Patents

Mold closing mechanism and method of plastic injection molding machine for preservation box Download PDF

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Publication number
CN113650249A
CN113650249A CN202110955984.9A CN202110955984A CN113650249A CN 113650249 A CN113650249 A CN 113650249A CN 202110955984 A CN202110955984 A CN 202110955984A CN 113650249 A CN113650249 A CN 113650249A
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China
Prior art keywords
movable
mould
mold
static
die
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CN202110955984.9A
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Chinese (zh)
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李天雄
李雪琴
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Individual
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Individual
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Priority to CN202110955984.9A priority Critical patent/CN113650249A/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
    • B29C45/64—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
    • B29C45/26—Moulds
    • B29C45/2602—Mould construction elements
    • B29C45/2606—Guiding or centering means
    • 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
    • B29C45/72—Heating or cooling
    • B29C45/74—Heating or cooling of the injection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases

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

Abstract

The invention belongs to the technical field of plastic injection molding automatic production, and relates to a mold closing mechanism of a preservation box injection molding machine and a method thereof, wherein the mechanism comprises a static mold device and a movable mold device; the static mould device comprises a static mould supporting plate, a first static mould connecting rod, a second static mould connecting rod and a static mould, the first static mould connecting rod and the second static mould connecting rod are respectively and transversely arranged on the front side and the rear side of the feeding end surface of the static mould supporting plate, and the static mould is arranged in the middle of the discharging end surface of the static mould supporting plate; the movable die device comprises a movable die moving assembly, a first movable die driving assembly and a second movable die driving assembly; the movable mould moving assembly is movably matched and arranged on the rack, the first movable mould driving assembly and the second movable mould driving assembly are respectively arranged on the front side and the rear side of the rack, and the first movable mould driving assembly and the second movable mould driving assembly are respectively matched and arranged with the front side and the rear side of the movable mould moving assembly. The advantage of this patent is that further promote the movable mould and remove positioning accuracy, promote the degree of cooperation between movable mould and the quiet mould.

Description

Mold closing mechanism and method of plastic injection molding machine for preservation box
Technical Field
The invention belongs to the technical field of plastic injection molding automatic production, and particularly relates to a mold closing mechanism and a mold closing method of a preservation box injection molding machine.
Background
The injection molding machine is used in modified plastics processing that current injection molding machine disclosed in for example the chinese utility model patent (publication number CN208100923U), including the injection molding machine body, the bottom fixedly connected with shell of injection molding machine body, the inner chamber of shell is provided with the lifter plate, the top of lifter plate is provided with first movable rod and second movable rod, be provided with the pivot between first activity and the second movable rod, and first movable rod and second movable rod are through pivot swing joint. The utility model discloses a set up injection molding machine body, shell, lifter plate, first movable rod, the second movable rod, the pivot, first installation piece, first slider, first spout, the cylinder, second installation piece, third installation piece, the second slider, a slide rail, the slide bar, the second spout, the cooperation of gyro wheel and telescopic link is used, solved current injection molding machine for the processing of modified plastics and did not possess the problem of the advantage of being convenient for remove, this injection molding machine does not need large-scale machinery to remove it when needs remove.
The prior injection molding machine at present has the following problems: the integral injection molding efficiency of the injection molding machine is low, and the injection molding process is unstable; secondly, the existing injection molding machine can not stably push the injection molding melt in the injection feeding process, and the injection molding efficiency is low.
Particularly, the connection strength and the connection stability of the static mold device of the prior injection molding machine are insufficient, so that the quality of an injection molding product is influenced in the injection molding process; the moving smoothness and the moving positioning precision of the existing moving die device of the injection molding machine are low, so that the moving die can not be accurately closed with a static die, and the precision and the quality of an injection molded product are low.
Disclosure of Invention
The invention aims to solve the problem of low mold closing positioning precision of the existing injection molding machine, and provides a mold closing mechanism of a preservation box injection molding machine.
For the purpose of the invention, the following technical scheme is adopted for realizing the purpose:
a mould closing mechanism of a preservative box injection molding machine comprises a static mould device and a movable mould device; the static mould device comprises a static mould supporting plate, a first static mould connecting rod, a second static mould connecting rod and a static mould; the middle part of the static mould supporting plate is provided with a static mould injection hole, the first static mould connecting rod and the second static mould connecting rod are respectively and transversely arranged on the front side and the rear side of the feeding end surface of the static mould supporting plate, and the static mould is arranged in the middle part of the discharging end surface of the static mould supporting plate; the movable die device comprises a movable die moving assembly, a first movable die driving assembly and a second movable die driving assembly; the movable die driving assembly and the second movable die driving assembly are respectively matched with the front side and the rear side of the movable die moving assembly, and the first movable die driving assembly and the second movable die driving assembly drive the movable die moving assembly to realize film combining and die opening; the movable mold device is provided with a preservation box model, the preservation box model is integrally rectangular, and the preservation box model comprises a preservation box matching part; the upper portion, the lower part and the rear portion of bright lid cooperation portion are provided with the preservation box notch respectively, cooperate with quiet mould device through the preservation box model on the movable mould device, are convenient for give the structure of fresh-keeping box and mould plastics out.
Preferably, the first stationary mold connecting rod and the second stationary mold connecting rod are symmetrically arranged.
Preferably, the middle part of the static mould is provided with a static mould groove; a section groove injection hole is formed in the center of the static mold section groove; the whole static die-shaped groove is rectangular, and four corners of the static die-shaped groove are provided with chamfers; the upper part, the lower part and the rear part of the static mould groove are respectively provided with strip-shaped convex blocks which are convex towards the inner side and have different sizes; and the upper part and the lower part of the static mould groove on the static mould are both provided with positioning holes.
Preferably, the movable die moving assembly comprises a first movable die moving slide rail, a second movable die moving slide rail, a movable die moving support and a movable die; the first movable die movable slide rail and the second movable die movable slide rail are respectively arranged on the front side and the rear side of the lower part of the machine frame, and the front side and the rear side of the movable die movable support are arranged on the first movable die movable slide rail and the second movable die movable slide rail in a sliding fit manner through movable slide blocks; the middle part of the front side and the middle part of the rear side of the movable mould movable bracket are both provided with movable matching lugs; the movable mould die is arranged in the middle of the feeding end face of the movable mould moving support.
Preferably, the middle part of the movable mould is provided with a rectangular stepped groove; chamfers are arranged at four corners of the stepped groove; the upper part, the lower part and the rear part of the stepped groove are respectively provided with a matching notch matched with the static mould device; and the upper part and the lower part of the stepped groove on the movable die are provided with positioning rods.
Preferably, the first movable die driving assembly and the second movable die driving assembly are arranged in a centrosymmetric mode and have the same structure.
Preferably, the first movable die driving assembly comprises a movable die driving motor, a movable die driving guide wheel, a movable die driven guide wheel, a movable die conveying belt and a movable die rotating shaft; the movable die driving motor is arranged at the lower part of the rack, a movable die driving guide wheel is connected with a rotating shaft of the movable die driving motor, and the movable die rotating shaft is transversely arranged in the middle of the front side of the rack through a movable die rotating shaft seat; the discharge end of the rotating shaft of the movable die is connected with the driven guide wheel of the movable die; the movable mould driven guide wheel and the movable mould driving guide wheel are connected through a movable mould conveyor belt in a tensioning mode, an auxiliary guide wheel is further arranged on the machine frame, and the auxiliary guide wheel is located on the outer side of the movable mould conveyor belt; the feed end of the rotating shaft of the movable mould penetrates through the movable matching lug and is fixedly connected with the static mould device through a bearing; the sliding of the movable mould moving assembly is realized by matching the rotation of the rotating shaft of the movable mould with the moving matching lug.
A mold closing method of a preservation box injection molding machine sequentially comprises the following steps: drive the movable mould initiative guide pulley through movable mould driving motor movable mould initiative guide pulley and carry out rotary drive, the movable mould initiative guide pulley is rotatory to drive movable mould driven pulley through the movable mould conveyer belt and carry out rotary drive, thereby make movable mould driven pulley drive the movable mould pivot and rotate, cooperate through the rotatory removal cooperation lug on movable mould pivot and the movable mould movable support, make movable mould movable support carry out the horizontal slip along first movable mould movable slide rail and second movable mould movable slide rail, and then make movable mould move to quiet mould and realize the compound die, mould plastics after the final compound die, mould plastics and accomplish the back die sinking and take out the freshness preservation box.
The automatic injection molding equipment for the preservation box comprises a rack, a feeding injection device, a clamping and moving-out device and the mold clamping mechanism, wherein the feeding injection device, the clamping and moving-out device and the mold clamping mechanism are arranged on the rack.
Preferably, the feed injection apparatus comprises an injection drive assembly, an injection screw, a screw housing, an injection feed barrel, and a plurality of heating rings.
Adopt above-mentioned technical scheme's a preservation box injection molding machine locking mechanism, this mechanism further promotes the stability of quiet mould backup pad through first quiet mould connecting rod and the quiet mould connecting rod symmetry setting of second on quiet mould device, prevents to change or rock in the position of the quiet mould backup pad of process of moulding plastics. The discharge end of the first static mould connecting rod passes through the static mould supporting through hole to enter between the first static mould clamping plate and the second static mould clamping plate, and the clamping arc-shaped concave surface of the first static mould clamping plate and the second static mould clamping plate is matched and clamped with the first static mould connecting rod, so that the connection strength and the connection stability are further improved. Be convenient for better to cooperate with the movable mould device through the locating hole, promote the accurate nature of location, further promote the effect of moulding plastics.
The sliding fluency is further improved by the matching of the movable slide block in the movable die device and the movable slide rail of the first movable die. The movable matching lug is convenient for better transmission matching, so that the movable matching lug is driven to slide left and right. Match through locating lever and locating hole, further promote the precision and the laminating degree of movable mould and quiet mould compound die to be convenient for further promote the effect of moulding plastics. The movable mould driven guide pulley is connected with the movable mould driving guide pulley through the tensioning of a movable mould conveyor belt, and the movable mould driving guide pulley rotates to drive the movable mould driven guide pulley to rotate through the movable mould conveyor belt, so that the movable mould driven guide pulley drives a movable mould rotating shaft to rotate. The tensity of the movable mould conveyor belt is further improved through the auxiliary guide wheel, so that the rotation precision and the rotation efficiency are improved better, and the positioning precision is further improved. The movable mould moving assembly is matched with the moving matching lug through rotation of the rotating shaft of the movable mould to realize sliding of the movable mould moving assembly, the movable mould moving assembly is moved along the horizontal direction, and therefore the movable mould moving assembly is better matched with the static mould device to realize mould opening and mould closing, and the injection molding effect is further improved.
This equipment is convenient for better being connected with injection drive motor through the motor shaft connecting rod among the feeding injection device, and when promoting the firm in connection and further promoted injection screw rotation efficiency. Through the cooperation between first connecting block, splice plate and the second connecting block, be convenient for better fix quiet mould device, further promote the firmness and the stability of quiet mould device. The bottom of the injection feeding cylinder is communicated with the feeding port, so that injection molding melt can be injected into the screw sleeve better, and injection can be performed better. The injection molding device has the advantages that the heating rings are convenient to heat in the injection process, the injection molding liquid is prevented from being solidified in the injection process, and the injection efficiency and the injection smoothness are improved better. Will mould plastics through the injection nozzle melt and progressively pour into to quiet mould device to prevent that melt injection that will mould plastics once from pouring into, also better promotion injection effect when promoting the stability of injection. Through pressing from both sides tight arc concave surface be convenient for firmly press from both sides the quiet mould connecting rod of first quiet mould connecting rod and the quiet mould connecting rod of second of quiet mould device, further prevent that quiet mould device is not hard up, ensure that quiet mould device is fixed, and then promote the stability at the in-process of moulding plastics.
To sum up, the advantage of this patent is that further promote the movable mould and remove positioning accuracy, promotes the cooperation degree between movable mould and the quiet mould to further promote injection molding efficiency and the effect of moulding plastics.
Drawings
FIG. 1 is a schematic structural diagram of an automatic injection molding device for a crisper of the present invention.
Fig. 2 is a schematic structural diagram of the preservation box model of the invention.
FIG. 3 is a schematic view of the structure of the feed injection apparatus of the present invention.
Fig. 4 is an exploded schematic view of the feed injection apparatus of the present invention.
FIG. 5 is a schematic structural diagram of a static mold device and a movable mold device according to the present invention.
FIG. 6 is a schematic structural diagram of the moving mold apparatus of the present invention.
Detailed Description
The following describes a detailed embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 3, the automatic injection molding equipment for the fresh-keeping box comprises a frame, and a feeding injection device 2, a static mold device 3, a movable mold device 4 and a clamping and removing device 1 which are arranged on the frame; the feeding injection device 2, the static mould device 3 and the movable mould device 4 are sequentially arranged on the frame in the feeding and discharging direction; the feeding injection device 2 is used for injecting the molten material to the static mold device 3; the static mold device 3 is fixedly arranged on the feeding injection device 2, the movable mold device 4 is movably arranged on the rack in a matching manner, the movable mold device 4 is matched with the static mold device 3, and the movable mold device 4 is used for being attached to the static mold device 3 to perform injection molding on the molten material; the clamping and moving-out device is located between the static die device 3 and the movable die device 4, the clamping and moving-out device 1 is used for clamping and discharging the injection-molded finished product, and the clamping and moving-out device 1 clamps the injection-molded finished product in a manipulator mode.
As shown in fig. 2, there is shown a preservation box model 5 used in the present invention, the preservation box model 5 is disposed on the movable mold device 4; the preservation box model 5 is integrally rectangular, and the preservation box model 5 comprises a preservation box matching part 51; the upper portion, the lower part and the rear portion of the fresh-keeping box matching portion 51 are respectively provided with a fresh-keeping box notch, and the fresh-keeping box model 5 on the movable mould device 4 is matched with the static mould device 3, so that the structure of the fresh-keeping box can be conveniently injected.
As shown in fig. 3 to 5, the feed injection device 2 includes an injection drive assembly 21, an injection screw 22, a screw housing 23, an injection feed cylinder 24, and a plurality of heating rings 25; the injection transmission assembly 21 is arranged at the feed end of the frame, the injection screw 22 is connected with the output end of the injection transmission assembly 21, and the injection screw 22 is driven to rotate through the injection transmission assembly 21, so that the injected injection melt is injected to the static mold. The injection transmission assembly 21 comprises an injection transmission motor 211 and a transmission connection set 212; the injection transmission motor 211 is transversely arranged on the frame, and the feed end of the injection screw 22 is provided with a motor rotating shaft connecting rod 221; the diameter of the injection screw rod 22 is larger than that of the motor rotating shaft connecting rod 221, the diameters of the injection screw rod 22 towards the motor rotating shaft connecting rod 221 are sequentially reduced, and the motor rotating shaft connecting rod 221 is connected with the rotating shaft of the injection transmission motor 211 through a rotating shaft sleeve 222; the connection rod 221 of the motor shaft facilitates better connection with the injection driving motor 211, thereby improving the connection firmness and further improving the rotation efficiency of the injection screw 22. The transmission connecting sleeve 212 is sleeved on the motor rotating shaft connecting rod 221 through a bearing, and the transmission connecting sleeve 212 comprises a first connecting block 2121, a connecting splint 2122 and a second connecting block 2123; connecting splint 2122 sets up between first connecting block 2121 and second connecting block 2123, and both sides are provided with quiet mould support through-hole 2124 around connecting splint 2122, through the cooperation between first connecting block 2121, connecting splint 2122 and the second connecting block 2123, are convenient for better fix quiet mould device 3, further promote the firmness and the stability of quiet mould device 3. The screw sleeve 23 is sleeved on the outer side of the injection screw 22; a feeding port 231 is formed in the top of the feeding end of the screw sleeve 23; the injection feeding cylinder 24 is longitudinally arranged on the screw sleeve 23, and the bottom of the injection feeding cylinder 24 is communicated with the feeding port 231, so that injection molding melt can be better injected into the screw sleeve 23, and better injection can be better carried out. A plurality of heating rings 25 regular spread set up on screw rod cover 23, are convenient for heat at the injection in-process through a plurality of heating rings 25, prevent to mould plastics the liquation and solidify at the injection in-process, the better promotion injection efficiency and the injection smoothness degree of being convenient for. The discharge end cover of screw rod cover 23 is equipped with injection nozzle 232, will mould plastics through injection nozzle 232 and melt progressively pours into to quiet mould device 3 to prevent that the melt that will mould plastics from pouring into, also better promotion injection effect when promoting the stability of injection. An isolation sleeve 251 is further disposed outside the plurality of heating rings 25, and heat of the heating rings 25 is prevented from being transferred to the outside by the isolation sleeve 251, thereby preventing a person and an instrument from contacting and damaging.
As shown in fig. 5, a stationary mold clamping set 213 is further disposed between the injection driving motor 211 and the driving connection set 212; the stationary die clamping group 213 includes a first stationary die clamping plate 2131 and a second stationary die clamping plate 2132; the first static mold clamping plate 2131 and the second static mold clamping plate 2132 are symmetrically arranged, and the middle parts of the first static mold clamping plate 2131 and the second static mold clamping plate 2132 are clamped on the rotating shaft sleeve 222; clamping arc-shaped concave surfaces 2133 are arranged on the front side and the rear side of the first static die clamping plate 2131; through clamping arc concave surface 2133 be convenient for firmly press from both sides first quiet mould connecting rod 32 and the quiet mould connecting rod 33 of second with quiet mould device 3, further prevent that quiet mould device 3 is not hard up, ensure that quiet mould device 3 is fixed, and then promote the stability at the in-process of moulding plastics.
During operation, the injection melt is poured from the injection feeding cylinder 24 and flows into the screw sleeve 23 from the feeding port 231, the injection drive motor 211 rotates to drive the injection screw 22 in the screw sleeve 23 to rotate, so that the injection melt in the screw sleeve 23 is slowly pushed towards the stationary mold device 3, the injection melt is heated by the plurality of heating rings 25 in the pushing process to prevent the injection melt from being solidified, and finally the injection melt is injected into the stationary mold device 3 through the injection nozzle 232.
The feeding injection device 2 solves the problems of unstable injection and low injection efficiency in the injection feeding process.
The connection rod 221 of the motor shaft in the feeding injection device 2 is convenient to be connected with the injection transmission motor 211 better, so that the connection firmness is improved, and the rotation efficiency of the injection screw 22 is further improved. Through the cooperation between first connecting block 2121, connecting splint 2122 and the second connecting block 2123, be convenient for better fix quiet mould device 3, further promote the firmness and the stability of quiet mould device 3. The bottom of the injection feeding cylinder 24 is communicated with the feeding port 231, so that injection molding melt can be better injected into the screw sleeve 23, and better injection can be facilitated. Be convenient for heat at the injection in-process through a plurality of heating rings 25, prevent to mould plastics the liquation and solidify at the injection in-process, be convenient for better promotion injection efficiency and injection smoothness degree. Will mould plastics through injection nozzle 232 and progressively pour into to quiet mould device 3 in to prevent that the melt that will mould plastics from pouring into, also better promotion injection effect when promoting the stability of injection. Be convenient for firmly press from both sides first quiet mould connecting rod 32 and the quiet mould connecting rod 33 of second with quiet mould device 3 through pressing from both sides tight arc concave surface 2133, further prevent that quiet mould device 3 is not hard up, ensure that quiet mould device 3 is fixed, and then promote the stability at the in-process of moulding plastics.
As shown in fig. 6, the stationary die apparatus 3 includes a stationary die support plate 31, a first stationary die connecting rod 32, a second stationary die connecting rod 33, and a stationary die 34; the middle part of static mould backup pad 31 is provided with the static mould injection hole, and the static mould injection hole cooperatees with injection nozzle 232 on the feeding injection device 2, and injection nozzle 232 will mould plastics the liquation and pour into in the static mould 34 through the static mould injection hole. First quiet mould connecting rod 32 and the quiet mould connecting rod 33 of second transversely set up both sides around quiet mould backup pad 31 feeding end face respectively, and first quiet mould connecting rod 32 and the quiet mould connecting rod 33 symmetry of second set up, have further promoted the stability of quiet mould backup pad 31 through first quiet mould connecting rod 32 and the quiet mould connecting rod 33 of second, prevent to change or rock in the position of the quiet mould backup pad 31 of process of moulding plastics. The discharge end of the first stationary mold connecting rod 32 is arranged at the front side of the feeding injection device 2, the discharge end of the first stationary mold connecting rod 32 penetrates through the stationary mold supporting through hole 2124 to enter between the first stationary mold clamping plate 2131 and the second stationary mold clamping plate 2132, the clamping arc-shaped concave surface 2133 of the first stationary mold clamping plate 2131 and the second stationary mold clamping plate 2132 is matched and clamped with the first stationary mold connecting rod 32, and the connecting strength and the connecting stability are further improved. The static mold 34 is arranged in the middle of the discharge end face of the static mold support plate 31; a static mold groove 341 is formed in the middle of the static mold 34; a groove injection hole 3410 is formed in the center of the static mold groove 341, and the injection melt enters the static mold groove 341 through the groove injection hole 3410. The static model groove 341 is rectangular as a whole, and four corners of the static model groove 341 are provided with chamfers; the upper part, the lower part and the rear part of the static mold groove 341 are respectively provided with strip-shaped convex blocks 3411 which are convex towards the inner side and have different sizes; the upper portion and the lower part that lie in quiet die cavity 341 on quiet mould 34 all are provided with locating hole 342, cooperate with movable mould device 4 better through locating hole 342, promote the accurate nature of location, further promote the effect of moulding plastics.
This quiet mould device 3 has solved current quiet mould device joint strength not enough to the problem that firmness and stability that lead to are low.
Through the first quiet mould connecting rod 32 and the quiet mould connecting rod 33 symmetry setting of second on the quiet mould device 3, further promoted the stability of quiet mould backup pad 31 through first quiet mould connecting rod 32 and the quiet mould connecting rod 33 of second, prevent to change or rock in the position of the quiet mould backup pad 31 of process of moulding plastics. The discharge end of the first stationary mold connecting rod 32 passes through the stationary mold supporting through hole 2124 to enter the space between the first stationary mold clamping plate 2131 and the second stationary mold clamping plate 2132, and the clamping arc-shaped concave surface 2133 of the first stationary mold clamping plate 2131 and the second stationary mold clamping plate 2132 is matched and clamped with the first stationary mold connecting rod 32, so that the connecting strength and the connecting stability are further improved. The positioning holes 342 are convenient to match with the movable mold device 4 better, the positioning accuracy is improved, and the injection molding effect is further improved.
As shown in fig. 6, the movable die apparatus 4 includes a movable die moving assembly 41, a first movable die driving assembly 42 and a second movable die driving assembly 43; the movable die moving assembly 41 is movably matched and arranged on the rack, the first movable die driving assembly 42 and the second movable die driving assembly 43 are respectively arranged on the front side and the rear side of the rack, the first movable die driving assembly 42 and the second movable die driving assembly 43 are respectively matched and arranged with the front side and the rear side of the movable die moving assembly 41, and the movable die moving assembly 41 is driven and driven by the first movable die driving assembly 42 and the second movable die driving assembly 43 to realize film closing and mold opening.
As shown in fig. 6, the movable mold moving assembly 41 includes a first movable mold moving slide 411, a second movable mold moving slide 412, a movable mold moving bracket 413, and a movable mold die 414; the first movable die movable sliding rail 411 and the second movable die movable sliding rail 412 are respectively arranged on the front side and the rear side of the lower portion of the machine frame, the front side and the rear side of the movable die movable bracket 413 are respectively arranged on the first movable die movable sliding rail 411 and the second movable die movable sliding rail 412 in a sliding fit mode through a movable sliding block 4131, and sliding fluency is further improved through matching of the movable sliding block 4131 and the first movable die movable sliding rail 411. The movable mold moving bracket 413 is provided with a movable matching bump 4132 in the middle of the front side and the middle of the rear side, and is convenient for better transmission matching through the movable matching bump 4132, so that the movable matching bump 4132 is driven to slide left and right. The movable mold 414 is arranged in the middle of the feeding end face of the movable mold moving support 413; the middle part of the movable mould 414 is provided with a rectangular stepped groove 4141; chamfers are arranged at four corners of the stepped groove 4141; the upper part, the lower part and the rear part of the stepped groove 4141 are respectively provided with a matching notch 4142 matched with the static mould device 3; step groove 4141 fit in is provided with preservation box model 5, and preservation box model 5 is used for the better structure of moulding plastics out preservation box. The upper portion and the lower portion of the movable mold 414 located in the stepped groove 4141 are provided with positioning rods 4143, and the positioning rods 4143 are matched with the positioning holes 342, so that the accuracy and the fitting degree of the mold closing of the movable mold 414 and the static mold 34 are further improved, and the injection molding effect is further improved.
As shown in fig. 6, the first movable die driving assembly 42 and the second movable die driving assembly 43 are arranged in a central symmetry manner and have the same structure; the first movable mold driving assembly 42 comprises a movable mold driving motor 421, a movable mold driving guide wheel 422, a movable mold driven guide wheel 423, a movable mold conveying belt 424 and a movable mold rotating shaft 425; the movable mold driving motor 421 is arranged at the lower part of the frame, the movable mold driving guide wheel 422 is connected with a rotating shaft of the movable mold driving motor 421, and the movable mold driving guide wheel 422 drives the movable mold driving guide wheel 422 to rotate and drive through the movable mold driving motor 421. The movable mold rotating shaft 425 is transversely arranged in the middle of the front side of the frame through a movable mold rotating shaft seat 4251; the discharge end of the movable mold rotating shaft 425 is connected with a movable mold driven guide wheel 423; the movable mold driven guide pulley 423 is connected with the movable mold driving guide pulley 422 in a tensioning mode through a movable mold conveying belt 424, the movable mold driving guide pulley 422 rotates to drive the movable mold driven guide pulley 423 to rotate through the movable mold conveying belt 424, and therefore the movable mold driven guide pulley 423 drives the movable mold rotating shaft 425 to rotate. Still be equipped with supplementary guide pulley 426 in the frame, and supplementary guide pulley 426 is located the movable mould conveyer belt 424 outside, further promotes movable mould conveyer belt 424's rate of tension through supplementary guide pulley 426 to be convenient for better promotion rotation precision and rotation efficiency, and further promote positioning accuracy. The feeding end of the movable mold rotating shaft 425 penetrates through the movable matching lug 4132 and is fixedly connected with the static mold device 3 through a bearing; the movable mold moving assembly 41 slides by matching the rotation of the movable mold rotating shaft 425 with the moving matching bump 4132, so that the movable mold moving assembly 41 moves along the horizontal direction, and is better matched with the static mold device 3 to realize mold opening and mold closing and further improve the injection molding effect.
During operation, through movable mould driving motor 421 movable mould driving guide wheel 422 drive movable mould driving guide wheel 422 and carry out the rotation drive, movable mould driving guide wheel 422 rotates and drives movable mould driven guide wheel 423 through movable mould conveyer belt 424 and carries out the rotation drive, thereby make movable mould driven guide wheel 423 drive movable mould pivot 425 and rotate, cooperate with removal cooperation lug 4132 on the movable mould movable support 413 through the rotation of movable mould pivot 425, make movable mould movable support 413 carry out the horizontal slip along first movable mould movable slide rail 411 and second movable mould movable slide rail 412, and then make movable mould 414 move to static mould 34 and realize the compound die, mould plastics after the final compound die, mould plastics after the completion of moulding plastics the die sinking and take out the preservation box structure.
The movable die device 4 solves the problem that the conventional movable die device is low in transmission efficiency, so that the moving smoothness is influenced; and the problem of low mobile positioning precision is solved.
The sliding smoothness is further improved by the cooperation of the movable slide 4131 in the movable mold device 4 and the first movable mold movable slide 411. The movable engaging projection 4132 facilitates a better driving engagement, thereby driving the movable engaging projection 4132 to slide left and right. The positioning rod 4143 is matched with the positioning hole 342, so that the accuracy and the fitting degree of the matched molds of the movable mold 414 and the static mold 34 are further improved, and the injection molding effect is further improved. The movable mold driven guide pulley 423 is connected with the movable mold driving guide pulley 422 in a tensioning mode through the movable mold conveyor belt 424, the movable mold driving guide pulley 422 rotates to drive the movable mold driven guide pulley 423 to rotate through the movable mold conveyor belt 424, and therefore the movable mold driven guide pulley 423 drives the movable mold rotating shaft 425 to rotate. The tension of the movable mold conveyor belt 424 is further increased by the auxiliary guide wheel 426, so that the rotation precision and the rotation efficiency are improved better, and the positioning precision is further improved. The movable mold moving assembly 41 slides by matching the rotation of the movable mold rotating shaft 425 with the moving matching lug 4132, so that the movable mold moving assembly 41 moves along the horizontal direction, the movable mold moving assembly and the static mold device 3 are better matched to realize mold opening and mold closing, and the injection molding effect is further improved.
An automatic injection molding method for a preservation box sequentially comprises the following steps:
s1 melt injection: by pouring the injection molding melt into the feed injection device 2; injecting injection molding liquid into the static mold device 3 through the feeding injection device 2;
s2 moving die positioning: moving the movable mold device 4 to move, enabling the movable mold device 4 and the static mold device 3 to be in a film closing state, and injecting injection molding liquid into a groove between the movable mold device 4 and the static mold device 3;
s3 blanking of finished products: after the finished preservation box is cooled and formed, the movable mold device 4 is moved away, and the preservation box is discharged by the clamping and moving device 1, so that the injection molding process is completed.

Claims (10)

1. A mold closing mechanism of a preservation box injection molding machine is characterized by comprising a static mold device (3) and a movable mold device (4); the static mould device (3) comprises a static mould supporting plate (31), a first static mould connecting rod (32), a second static mould connecting rod (33) and a static mould (34); a static mold injection hole is formed in the middle of the static mold supporting plate (31), a first static mold connecting rod (32) and a second static mold connecting rod (33) are respectively and transversely arranged on the front side and the rear side of the feeding end face of the static mold supporting plate (31), and a static mold (34) is arranged in the middle of the discharging end face of the static mold supporting plate (31); the movable die device (4) comprises a movable die moving assembly (41), a first movable die driving assembly (42) and a second movable die driving assembly (43); the movable die moving assembly (41) is movably matched and arranged on the rack, the first movable die driving assembly (42) and the second movable die driving assembly (43) are respectively arranged on the front side and the rear side of the rack, the first movable die driving assembly (42) and the second movable die driving assembly (43) are respectively matched and arranged with the front side and the rear side of the movable die moving assembly (41), and the movable die moving assembly (41) is driven and driven by the first movable die driving assembly (42) and the second movable die driving assembly (43) to realize film closing and die opening; the movable mold device (4) is provided with a preservation box model (5), the preservation box model (5) is integrally rectangular, and the preservation box model (5) comprises a preservation box matching part (51); the upper portion, the lower part and the rear portion of bright box lid cooperation portion (51) are provided with the preservation box notch respectively, cooperate with quiet mould device (3) through preservation box model (5) on movable mould device (4), are convenient for give the structure of fresh-keeping box and mould plastics out.
2. The mold clamping mechanism of the injection molding machine for fresh keeping boxes according to claim 1, wherein the first stationary mold connecting rod (32) and the second stationary mold connecting rod (33) are symmetrically arranged.
3. The mold clamping mechanism of the injection molding machine of the crisper according to claim 2, wherein a static mold groove (341) is formed in the middle of the static mold (34); a profiled groove injection hole (3410) is formed in the center of the static profiled groove (341); the whole static model groove (341) is rectangular, and four corners of the static model groove (341) are provided with chamfers; the upper part, the lower part and the rear part of the static model groove (341) are respectively provided with strip-shaped convex blocks (3411) which are convex inwards and have different sizes; the upper part and the lower part of the static mould groove (341) on the static mould (34) are provided with positioning holes (342).
4. The mold clamping mechanism of the crisper injection molding machine, according to claim 1, wherein the movable mold moving assembly (41) comprises a first movable mold moving slide (411), a second movable mold moving slide (412), a movable mold moving bracket (413) and a movable mold (414); the first movable die movable sliding rail (411) and the second movable die movable sliding rail (412) are respectively arranged on the front side and the rear side of the lower part of the rack, and the front side and the rear side of the movable die movable bracket (413) are respectively arranged on the first movable die movable sliding rail (411) and the second movable die movable sliding rail (412) in a sliding fit manner through movable sliders (4131); the middle part of the front side and the middle part of the rear side of the movable mould moving bracket (413) are respectively provided with a movable matching lug (4132); the movable mould die (414) is arranged in the middle of the feeding end surface of the movable mould moving support (413).
5. The mold clamping mechanism of the crisper injection molding machine, as claimed in claim 4, wherein a rectangular stepped groove (4141) is provided in the middle of the movable mold (414); chamfers are arranged at four corners of the stepped groove (4141); the upper part, the lower part and the rear part of the stepped groove (4141) are respectively provided with a matching notch (4142) matched with the static die device (3); the step groove (4141) is internally provided with a fresh-keeping box model (5) in a matching way, and the movable mould die (414) is provided with positioning rods (4143) at the upper part and the lower part of the step groove (4141).
6. The mold clamping mechanism of the crisper injection molding machine, as claimed in claim 4, wherein the first movable mold driving assembly (42) and the second movable mold driving assembly (43) are arranged in a central symmetry manner and have the same structure.
7. The mold clamping mechanism of the crisper injection molding machine as claimed in claim 6, wherein the first movable mold driving assembly (42) comprises a movable mold driving motor (421), a movable mold driving guide wheel (422), a movable mold driven guide wheel (423), a movable mold conveyor belt (424), and a movable mold rotating shaft (425); the movable mold driving motor (421) is arranged at the lower part of the frame, the movable mold driving guide wheel (422) is connected with a rotating shaft of the movable mold driving motor (421), and the movable mold rotating shaft (425) is transversely arranged at the middle part of the front side of the frame through a movable mold rotating shaft seat (4251); the discharge end of the movable mould rotating shaft (425) is connected with a movable mould driven guide wheel (423); the movable mould driven guide wheel (423) is connected with the movable mould driving guide wheel (422) in a tensioning mode through a movable mould conveyor belt (424), an auxiliary guide wheel (426) is further arranged on the rack, and the auxiliary guide wheel (426) is located on the outer side of the movable mould conveyor belt (424); the feed end of the movable mould rotating shaft (425) penetrates through the movable matching lug (4132) and is fixedly connected with the static mould device (3) through a bearing; the sliding of the movable mold moving component (41) is realized by the rotation of the movable mold rotating shaft (425) and the matching of the moving matching lug (4132).
8. The mold closing method of the plastic injection molding machine for the preservation box is characterized by comprising the following steps in sequence: the movable mould driving guide wheel (422) is driven to rotate and drive through a movable mould driving motor (421), the movable mould driving guide wheel (422) rotates to drive a movable mould driven guide wheel (423) to rotate and drive through a movable mould conveyor belt (424), so that the movable mould driven guide wheel (423) drives a movable mould rotating shaft (425) to rotate, the movable mould rotating shaft (425) rotates to be matched with a movable matching lug (4132) on a movable mould moving support (413), the movable mould moving support (413) horizontally slides along a first movable mould moving sliding rail (411) and a second movable mould moving sliding rail (412), the movable mould (414) moves towards a static mould (34) to realize mould closing, finally, injection molding is carried out after mould closing, and mould opening is carried out after injection molding is finished to take out a fresh-keeping box structure.
9. An automatic injection molding device for fresh-keeping boxes, which is characterized by comprising a frame, a feeding and injecting device (2) arranged on the frame, a clamping and moving device (1) and a mold clamping mechanism according to any one of claims 1 to 7.
10. The automated crisper injection molding apparatus of claim 9, wherein the feed injection device (2) comprises an injection drive assembly (21), an injection screw (22), a screw housing (23), an injection feed cartridge (24), and a plurality of heating rings (25).
CN202110955984.9A 2021-08-19 2021-08-19 Mold closing mechanism and method of plastic injection molding machine for preservation box Withdrawn CN113650249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110955984.9A CN113650249A (en) 2021-08-19 2021-08-19 Mold closing mechanism and method of plastic injection molding machine for preservation box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110955984.9A CN113650249A (en) 2021-08-19 2021-08-19 Mold closing mechanism and method of plastic injection molding machine for preservation box

Publications (1)

Publication Number Publication Date
CN113650249A true CN113650249A (en) 2021-11-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110955984.9A Withdrawn CN113650249A (en) 2021-08-19 2021-08-19 Mold closing mechanism and method of plastic injection molding machine for preservation box

Country Status (1)

Country Link
CN (1) CN113650249A (en)

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Application publication date: 20211116