CN111823505A

CN111823505A - Injection mold for plastic products

Info

Publication number: CN111823505A
Application number: CN202010694849.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: 许兼
Current assignee: Hangzhou Hailian Plastic Co.,Ltd.
Priority date: 2020-07-18
Filing date: 2020-07-18
Publication date: 2020-10-27
Anticipated expiration: 2040-07-18
Also published as: CN111823505B

Abstract

The invention relates to the technical field of injection molds and discloses an injection mold for plastic products, which comprises a left side fixed circular plate and a right side fixed circular plate, wherein a cooling device is fixedly arranged at the bottom of the right side of the left side fixed circular plate, a support shaft is movably arranged at the center of the left side fixed circular plate, a rotating circular plate is fixedly arranged at the right end of the support shaft, and five molds are uniformly and fixedly arranged on the right side of the rotating circular plate. Through the setting of rotatory plectane and mould, make the production cycle with the product equally divide into five parts, and then make each mould homoenergetic adaptation corresponding link, shorten the cycle of moulding plastics in the injection molding machine towards the mould, and then improve the production efficiency of product, and reduce the heating time to plastisol in the injection molding machine, and then guarantee the quality of material, improve the quality of product, simultaneously through cooling device's setting, increase mould heat radiating surface area, improve cooling efficiency, reduce the cooling time, further improve product production efficiency.

Description

Injection mold for plastic products

Technical Field

The invention relates to the technical field of injection molds, in particular to an injection mold for plastic products.

Background

The mould is a tool capable of producing parts with certain shape and size requirements, and is matched with an injection molding machine for use, so that the production speed of the product is accelerated from single production to batch production, the produced product is ensured to be the same, but the mould has some defects in the using process, and the following steps are included:

as shown in fig. 8, this is a molding cycle of a product, where the segment a represents injection time, which accounts for 5% of the whole cycle, the segment B represents pressure maintaining and cooling time, which accounts for 80% of the whole cycle, and the segment C represents mold opening and film newly closing time, which accounts for 15% of the whole cycle, and it can be seen from this that, the pressure maintaining and cooling for the mold greatly affects the production efficiency of the product, and further cannot improve the production speed of the product, and meanwhile, too long cooling and pressure maintaining time easily causes too long heating time of the plastisol in the injection molding machine, which causes aging of the sol, and too high viscosity, which affects the molding and quality of the product.

Disclosure of Invention

The invention provides an injection mold for plastic products, which has the advantages of cyclic injection molding and high production efficiency and solves the problems in the background art.

The invention provides the following technical scheme: an injection mold for plastic products comprises a left side fixed circular plate and a right side fixed circular plate, wherein a cooling device is fixedly mounted at the bottom of the right side of the left side fixed circular plate, a support shaft is movably mounted at the center of the left side fixed circular plate, a rotating circular plate is fixedly mounted at the right end of the support shaft, five molds are uniformly and fixedly mounted on the right side of the rotating circular plate, a servo motor is fixedly connected to the left end of the support shaft, and an injection molding plate is fixedly mounted at the center of the top of the left side of the right side fixed circular plate;

the mould includes cover half bedplate, movable mould board, separator, fixed mounting panel and locating lever, the left side of movable mould board and the right side fixed connection of fixed mounting panel, separator and movable mould board swing joint just are located the inside of movable mould board, locating lever and movable mould board fixed connection of telling, the locating lever cup joints with the cover half bedplate activity, the left side fixed mounting of cover half bedplate has ejecting device, ejecting device and movable mould board fixed connection, the inside fixed mounting of movable mould board has chucking device.

Preferably, the cooling device comprises a cooling tank, water holes are respectively formed in the front face and the back face of the cooling tank, a diaphragm is fixedly mounted at the top of the inner wall of the cooling tank and made of high-temperature-resistant rubber materials, the diaphragm is in a loose state, and a rotating circular plate rotates.

Preferably, the cover half bedplate includes the fixed plate, the right side fixed mounting of fixed plate has the reference column, the reference column has three and evenly distributed, set up the counter bore that corresponds with the reference column on the board of moulding plastics, fixed plate middle part fixedly connected with pressurizer.

Preferably, the pressurizer includes the ejector plate, ejector plate and fixed plate swing joint, guide arm one has been cup jointed in the inside activity of ejector plate, the right-hand member and the fixed plate fixed connection of guide arm one, spring one has been cup jointed in the right part of guide arm one and the right side activity that is located the ejector plate, the positive right part swing joint of ejector plate has the connecting plate, the other end swing joint of connecting plate has the closing plate, closing plate and fixed plate swing joint.

Preferably, the ejecting device is including pressing into the board, press into board and movable mould board swing joint, press into the right side of board and the left side fixed connection of fixed plate, the inside activity of pressing into the board has cup jointed guide arm two, the right-hand member and the movable mould board fixed connection of guide arm two, spring two has been cup jointed in the right part of guide arm two and the right side activity that is located the press into board, chucking device is including calorie post and coil, card post and movable mould board swing joint, coil fixed mounting is on the movable mould board, card post and coil activity cup joint, the both ends difference fixedly connected with battery of coil, battery and movable mould board fixed connection, press into and set up on the board with the counter bore of card post to the adaptation.

Preferably, the diameter of the left fixed circular plate is larger than that of the rotating circular plate.

Preferably, the length of the guide rod which is positioned inside the pressing plate is greater than the sum of the width of the product and the width of the fixing plate.

Preferably, the thickness of the closing plate is 1-2mm, and the material is alloy steel with good rigidity

The invention has the following beneficial effects:

1. through the setting of rotatory plectane and mould, make the production cycle with the product equally divide into five parts, and then make each mould homoenergetic adaptation corresponding link, shorten the cycle of moulding plastics in the injection molding machine towards the mould, and then improve the production efficiency of product, and reduce the heating time to plastisol in the injection molding machine, and then guarantee the quality of material, improve the quality of product, simultaneously through cooling device's setting, increase mould heat radiating surface area, improve cooling efficiency, reduce the cooling time, further improve product production efficiency.

2. Through pressurizer's setting for seal the mouth of moulding plastics, carry out the pressurize to the inside of mould, block collosol simultaneously, prevent that it from moulding plastics mouthful outflow, and will mould plastics and distinguish with the pressurize, reduce the contact time of injection molding machine and mould, further reduce the cycle of moulding plastics of injection molding machine, and then improve production efficiency once more.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is a schematic top view of a structural mold of the present invention;

FIG. 4 is a schematic view taken at D-D in FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the invention at E-E in FIG. 3;

FIG. 6 is an enlarged view of the point F in FIG. 3 according to the present invention;

FIG. 7 is an enlarged view of the invention at G in FIG. 3;

fig. 8 is a schematic diagram of a molding cycle of a product with a conventional structure.

In the figure: 1. a circular plate is fixed on the left side; 2. a circular plate is fixed on the right side; 3. injection molding a plate; 4. a cooling device; 41. a cooling tank; 42. a water pore; 43. a diaphragm; 5. a support shaft; 6. rotating the circular plate; 7. a servo motor; 8. a mold; 81. a fixed die base plate; 811. a fixing plate; 812. a pressure maintaining device; 8121. pushing out the plate; 8122. a first guide rod; 8123. a first spring; 8124. a connecting plate; 8125. a closing plate; 813. a positioning column; 82. moving the template; 83. a separation device; 84. fixing the mounting plate; 85. a push-out device; 851. pressing the plate in; 852. a second guide rod; 853. a second spring; 86. a clamping device; 861. clamping the column; 862. a coil; 863. a battery; 87. and (5) positioning the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an injection mold for plastic products comprises a left side fixed circular plate 1 and a right side fixed circular plate 2, wherein a cooling device 4 is fixedly installed at the bottom of the right side of the left side fixed circular plate 1, a supporting shaft 5 is movably installed at the center of the left side fixed circular plate 1, a rotating circular plate 6 is fixedly installed at the right end of the supporting shaft 5, five molds 8 are fixedly installed on the right side of the rotating circular plate 6 in a dividing manner, a servo motor 7 is fixedly connected to the left end of the supporting shaft 5, and an injection molding plate 3 is fixedly installed at the center of the top of the left;

the mold 8 comprises a fixed mold seat plate 81, a movable mold plate 82, a separating device 83, a fixed mounting plate 84 and a positioning rod 87, the left side of the movable mold plate 82 is fixedly connected with the right side of the fixed mounting plate 84, the separating device 83 is movably connected with the movable mold plate 82 and is located inside the movable mold plate 82, the positioning rod 87 is fixedly connected with the movable mold plate 82, the positioning rod 87 is movably sleeved with the fixed mold seat plate 81, a pushing-out device 85 is fixedly mounted on the left side of the fixed mold seat plate 81, the pushing-out device 85 is fixedly connected with the movable mold plate 82, and a clamping device 86 is fixedly mounted inside the movable.

Wherein, cooling device 4 includes cooling bath 41, water hole 42 has been seted up respectively with the back in the front of cooling bath 41, the top fixed mounting of cooling bath 41 inner wall has diaphragm 43, diaphragm 43 is made by high temperature resistant rubber material, diaphragm 43 is lax state, rotatory plectane 6 is rotatory, make mould 8 get into in cooling device 4, contact with diaphragm 43, and then make the cooling water in the cooling device 4 carry out the cladding to mould 8, the unnecessary heat of discharge, increase mould 8 heat dissipation surface area, and the cooling efficiency is improved, reduce the cooling time, further improve product production efficiency, diaphragm 43 separates mould 8 simultaneously, prevent that the cooling water from adhering to mould 8 on, cause the influence to subsequent operation.

Wherein, cover half bedplate 81 includes fixed plate 811, fixed plate 811's right side fixed mounting has reference column 813, reference column 813 has three and evenly distributed, set up the counter bore that corresponds with reference column 813 on the board 3 of moulding plastics, fixed plate 811 middle part fixedly connected with pressurizer 812, make and seal the mouth of moulding plastics, pressurize the inside of mould 8, block colloidal sol simultaneously, prevent that it from flowing from the mouth of moulding plastics, and distinguish with the pressurize of moulding plastics, reduce the contact time of injection molding machine and mould 8, further reduce the cycle of moulding plastics of injection molding machine, and then improve production efficiency once more.

The pressure maintaining device 812 comprises a push-out plate 8121, the push-out plate 8121 is movably connected with a fixed plate 811, a guide rod 8122 is movably sleeved inside the push-out plate 8121, the right end of the guide rod 8122 is fixedly connected with the fixed plate 811, a spring 8123 is movably sleeved on the right portion of the guide rod 8122 and located on the right side of the push-out plate 8121, a connecting plate 8124 is movably connected to the right portion of the front face of the push-out plate 8121, a closing plate 8125 is movably connected to the other end of the connecting plate 8124, the closing plate 8125 is movably connected with the fixed plate 811, when the injection molding machine injects plastisol into the mold 8 through an injection port, when the mold 8 is separated from the injection molding plate 3, the spring 8123 pushes out the push-out plate 8121 and drives the connecting plate 8124 to rotate, so that the connecting plate 8124 pushes the closing plate 8125 to close the injection port, and maintain pressure inside the.

Wherein, the push-out device 85 comprises a press-in plate 851, the press-in plate 851 is movably connected with the movable template 82, the right side of the press-in plate 851 is fixedly connected with the left side of the fixed plate 811, the press-in plate 851 is movably sleeved with a guide rod two 852, the right end of the guide rod two 852 is fixedly connected with the movable template 82, the right part of the guide rod two 852 is movably sleeved with a spring two 853 positioned on the right side of the press-in plate 851, the clamping device 86 comprises a clamp column 861 and a coil 862, the clamp column 861 is movably connected with the movable template 82, the coil 862 is fixedly arranged on the movable template 82, the clamp column 861 is movably sleeved with the coil 862, two ends of the coil 862 are respectively and fixedly connected with a battery 863, the battery 863 is fixedly connected with the movable template 82, the press-in plate 851 is provided with a counter bore matched with the clamp column 861, when the unloading is needed, the coil 862 is electrified, so that the clamp column 861 is separated from the press-in, and the product is separated by the pushing out of the separating device 83.

The diameter of the left fixed disk 1 is larger than that of the rotating disk 6, so that the mold 8 can smoothly enter the cooling tank 41 to be cooled when the rotating disk 6 rotates.

The length of the second guide rod 852 inside the pressing plate 851 is greater than the sum of the width of the product and the width of the fixing plate 811.

Wherein, the thickness of the closing plate 8125 is 1-2mm, and the material is alloy steel with good rigidity.

The working principle is that the left fixed circular plate 1, the right fixed circular plate 2 and the servo motor 7 are all fixedly installed on the injection molding machine, the center of the injection molding plate 3 positioned on the left side of the right fixed circular plate 2 is aligned with the center of the injection molding machine barrel, the injection molding machine drives the left fixed circular plate 1 to move horizontally, if the left fixed circular plate 1 moves leftwards, the injection molding machine injects plastisol into the mold 8 through an injection port, when the mold 8 is separated from the injection molding plate 3, the spring I8123 ejects the ejection plate 8121 out and drives the connecting plate 8124 to rotate, so that the connecting plate 8124 pushes the sealing plate 8125 to seal the injection port, pressure is maintained in the mold 8, after translation is finished, the servo motor 7 rotates the circular plate 6 for 72 degrees to enable the next mold 8 to be level with the injection molding plate 3, then the injection molding machine drives the servo motor 7 to translate rightwards to contact the mold 8 with the injection molding plate 3, the positioning column 813 is inserted into the injection molding plate 3, meanwhile, the injection molding plate 3 presses the push-out plate 8121, the closed plate 8125 returns to the position, the injection molding channel is recovered, during cooling, the rotating circular plate 6 rotates, the mold 8 enters the cooling device 4 and is in contact with the diaphragm 43, further, cooling water in the cooling device 4 coats the mold 8, redundant heat is discharged, cooling is formed, after cooling, the rotating circular plate 6 rotates again and enters the unloading process, the coil 862 is electrified, the clamping column 861 is separated from the press-in plate 851, the spring two 853 pushes out the press-in plate 851, further, the fixed mold seat plate 81 and the movable mold plate 82 are separated, and products are separated under the push-out of the separating device 83.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an injection mold for plastic products, includes fixed plectane (1) in left side and the fixed plectane in right side (2), its characterized in that: the cooling device (4) is fixedly installed at the bottom of the right side of the left side fixed circular plate (1), a supporting shaft (5) is movably installed at the center of the left side fixed circular plate (1), a rotating circular plate (6) is fixedly installed at the right end of the supporting shaft (5), five molds (8) are uniformly and fixedly installed on the right side of the rotating circular plate (6), a servo motor (7) is fixedly connected to the left end of the supporting shaft (5), and an injection molding plate (3) is fixedly installed at the center of the top of the left side of the right side fixed circular plate (2);

mould (8) are including cover half bedplate (81), movable mould board (82), separator (83), fixed mounting board (84) and locating lever (87), the left side of movable mould board (82) and the right side fixed connection of fixed mounting board (84), inside that separator (83) and movable mould board (82) swing joint just are located movable mould board (82), locating lever (87) and movable mould board (82) fixed connection of telling, locating lever (87) cup joint with cover half bedplate (81) activity, the left side fixed mounting of cover half bedplate (81) has ejecting device (85), ejecting device (85) and movable mould board (82) fixed connection, the inside fixed mounting of movable mould board (82) has chucking device (86).

2. An injection mold for plastic articles as claimed in claim 1, wherein: cooling device (4) include cooling tank (41), water hole (42) have been seted up respectively to the front and the back of cooling tank (41), the top fixed mounting of cooling tank (41) inner wall has diaphragm (43), diaphragm (43) are made by high temperature resistant rubber material, diaphragm (43) are lax state, and rotatory plectane (6) are rotatory.

3. An injection mold for plastic articles as claimed in claim 1, wherein: the cover half bedplate (81) includes fixed plate (811), the right side fixed mounting of fixed plate (811) has reference column (813), reference column (813) have three and evenly distributed, the counter bore that corresponds with reference column (813) has been seted up on board (3) of moulding plastics, fixed plate (811) middle part fixedly connected with pressurizer (812).

4. An injection mold for plastic articles as claimed in claim 3, wherein: the pressurizer (812) comprises a push-out plate (8121), the push-out plate (8121) is movably connected with a fixed plate (811), a first guide rod (8122) is movably sleeved inside the push-out plate (8121), the right end of the first guide rod (8122) is fixedly connected with the fixed plate (811), a first spring (8123) is movably sleeved on the right portion of the first guide rod (8122) and located on the right side of the push-out plate (8121), a connecting plate (8124) is movably connected to the right portion of the front face of the push-out plate (8121), a sealing plate (8125) is movably connected to the other end of the connecting plate (8124), and the sealing plate (8125) is movably connected with the fixed plate (811).

5. An injection mold for plastic articles as claimed in claim 1, wherein: the push-out device (85) comprises a press-in plate (851), the press-in plate (851) is movably connected with a movable template (82), the right side of the press-in plate (851) is fixedly connected with the left side of a fixed plate (811), a second guide rod (852) is movably sleeved in the press-in plate (851), the right end of the second guide rod (852) is fixedly connected with the movable template (82), the right part of the second guide rod (852) is movably sleeved with a second spring (853) on the right side of the press-in plate (851), the clamping device (86) comprises a clamping column (861) and a coil (862), the clamping column (861) is movably connected with the movable template (82), the coil (862) is fixedly installed on the movable template (82), the clamping column (861) is movably sleeved with the coil (862), two ends of the coil (862) are respectively and fixedly connected with a battery (863), and the battery (863) is fixedly connected with the movable template (82), the pressing plate (851) is provided with a counter bore which is matched with the clamping column (861).

6. An injection mold for plastic articles as claimed in claim 1, wherein: the diameter of the left side fixed circular plate (1) is larger than that of the rotating circular plate (6).

7. An injection mold for plastic articles as claimed in claim 5, wherein: the length of the second guide rod (852) in the pressing plate (851) is greater than the sum of the width of the product and the width of the fixing plate (811).

8. An injection mold for plastic articles as claimed in claim 4, wherein: the thickness of the closing plate (8125) is 1-2mm, and the material is alloy steel with good rigidity.