CN215969797U

CN215969797U - Vacuum cover type rubber injection machine

Info

Publication number: CN215969797U
Application number: CN202122448591.7U
Authority: CN
Inventors: 沈功能; 陈剑波; 葛福炯
Original assignee: Yuyao Watai Rubber & Plastics Machinery Co ltd
Current assignee: Yuyao Watai Rubber & Plastics Machinery Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-03-08
Anticipated expiration: 2031-10-11

Abstract

The utility model relates to a vacuum cover formula rubber injection machine, which comprises a base, the roof, the guide post, the movable mould board, go up the hot plate, the hot plate down, the vacuum plunger, the vacuum cover subassembly, movable mould board driving source and driving source subassembly, the both ends of guide post are fixed in respectively on base and the roof, the movable mould board slides and connects on the guide post, the movable mould board driving source is located and is ordered about the movable mould board and go up and down on the base, the hot plate is located on the movable mould board down, the downside of roof is fixed in the vacuum plunger to go up the hot plate, the vacuum cover subassembly slides and connects on the guide post, the driving source subassembly is used for ordering about the vacuum cover subassembly and goes up and down, the vacuum cover subassembly has an aspirating hole, go up the lower mould die and close the back, the upside and the vacuum plunger sealing connection of vacuum cover subassembly, the downside and the movable mould board sealing connection of vacuum cover subassembly, in order to form the vacuum cavity that holds the compound die mould. The application has the effect of forming a vacuum environment in the rubber injection machine for vacuum injection of the mold.

Description

Vacuum cover type rubber injection machine

Technical Field

The application relates to the field of rubber injection equipment, in particular to a vacuum cover type rubber injection machine.

Background

The rubber injection molding machine is one new technology for producing rubber molded product, and is mainly used in producing molded product, such as insulating part, damping part, sealing part, etc.

Because some precision rubber products need injection molding under the vacuum environment, because the products are molded and vulcanized in the vacuum negative pressure environment, the air is easier to exhaust, air bubbles are not easy to form, the efficiency is high, and the yield is high. The method is particularly suitable for producing rubber model products with complex shapes, difficult exhaust and the like and high molding difficulty.

In the related art, a common single-layer vacuum cover is used for a vertical rubber injection machine, when a mold is thick, the height of the vacuum cover is high, the corresponding lifting stroke is large, an injection head is longer, and the injection precision is difficult to ensure, so that the rubber injection machine capable of solving the defects and forming a vacuum cavity is urgently needed to be designed.

SUMMERY OF THE UTILITY MODEL

During rubber injection molding, the molding rejection rate in the vacuum cavity is small, and in order to solve the defects that a vertical rubber injection mold is thick and an injection head is long, the application provides a vacuum cover type rubber injection machine.

The application provides a vacuum cap type rubber injection machine adopts following technical scheme:

a vacuum cover type rubber injection machine comprises a base, a top plate, guide columns, a movable template, an upper hot plate, a lower hot plate, a vacuum plunger, a vacuum cover assembly, a movable template driving source and a driving source assembly, wherein the number of the guide columns is at least two, two ends of at least two guide columns are respectively fixed on the base and the top plate in a one-to-one correspondence manner, the movable template is connected to the guide columns in a sliding manner, the movable template driving source is arranged on the base to drive the movable template to lift, the lower hot plate is arranged on the movable template, the vacuum plunger is fixed on the lower side of the top plate, the upper hot plate is fixed on the lower side of the vacuum plunger, the vacuum cover assembly is connected to the guide columns in a sliding manner, the driving source assembly is used for driving the vacuum cover assembly to lift, and the vacuum cover assembly is provided with an air exhaust hole;

after the lower die on the lower hot plate and the upper die on the upper hot plate are matched, the upper side of the vacuum cover assembly is in sealing connection with the vacuum plunger, and the lower side of the vacuum cover assembly is in sealing connection with the movable die plate, so that a vacuum cavity for accommodating the matched die is formed.

Through adopting above-mentioned technical scheme, when going up mould and lower mould compound die, the vacuum cover subassembly can form the vacuum cavity that holds the compound die mould with last hot plate, hot plate cooperation down driving element to injection moulding goods have guaranteed that the product can injection moulding under the vacuum environment, reduce the rejection rate.

Optionally, the vacuum cover assembly includes a first cover body, the first cover body is connected to the guide post in a sliding manner, the first cover body is sleeved on the outer side of the vacuum plunger and connected with the vacuum plunger in a sliding manner, the first cover body is connected with the vacuum plunger in a sealing manner, the driving source assembly includes a first driving source, the first driving source is arranged on the top plate and drives the first cover body to slide, and the air exhaust hole is formed in the side wall of the first cover body;

after the upper die and the lower die of the die are closed, the upper side of the first cover body is connected with the vacuum plunger in a sealing mode, and the lower side of the first cover body is connected with the movable die plate in a sealing mode, so that a vacuum cavity is formed on the outer side of the die.

Through the technical scheme, after the upper die and the lower die of the die are closed, the first cover body is matched with the upper hot plate, the lower hot plate and the vacuum plunger under the driving of the first driving source to form the vacuum cavity for accommodating the closed die, so that a product can be subjected to injection molding in a vacuum environment.

Optionally, a first sliding barrel corresponding to the guide posts one to one is fixed on the side wall of the first cover body, and the first sliding barrel is sleeved on the guide posts and connected with the guide posts in a sliding manner.

Through adopting above-mentioned technical scheme, the first cover body slides through a first section of thick bamboo that slides and connects on the guide post for difficult emergence is rocked when the first cover body goes up and down.

Optionally, the vacuum cover assembly further comprises a second cover body, the second cover body is connected to the guide column in a sliding mode, the driving source assembly comprises a second driving source, the second driving source is arranged on the outer side wall of the first cover body and drives the second cover body to lift, and after an upper die and a lower die of the die are assembled on the movable die plate, the first cover body, the second cover body, the vacuum plunger and the movable die plate are matched to form a vacuum cavity for accommodating the die.

Through adopting above-mentioned technical scheme, compare in only being equipped with the first cover body, the first cover body is less in the ascending dimension of height of vertical side, and when the first cover body rose the butt on the roof, go up the hot plate and expose in the downside of the first cover body, conveniently install the mould on last hot plate or will go up the mould and pull down from last hot plate, improved the dismouting efficiency of last mould.

Optionally, a second sliding barrel is fixedly arranged on the peripheral side of the second cover body, and the second sliding barrel is sleeved on the guide post and is connected with the guide post in a sliding manner.

Through adopting above-mentioned technical scheme, the second cover body slides through the second section of thick bamboo that slides and connects on the guide post for difficult emergence is rocked when the second cover body goes up and down.

Optionally, the vacuum cover assembly further comprises a third cover body, the third cover body is arranged on the movable template and is in sealing connection with the movable template, the second cover body is connected with the first cover body, the third cover body and the movable template are driven by the movable template driving source to be in sealing connection with the lower side of the second cover body, and after the upper die and the lower die are assembled, the first cover body, the second cover body, the third cover body and the vacuum plunger are matched to form a vacuum cavity for accommodating the die.

Through adopting above-mentioned technical scheme, compare in only being provided with the first cover body and the second cover body, the setting of the third cover body for the second cover body is littleer in the ascending size of direction of height, and the first cover body slides and accomodates in the outside of vacuum plunger and the second cover body butt when the downside of the first cover body, and the downside of the second cover body is bigger with the distance between the lower hot plate, with the convenience with the lower mould install under on the hot plate.

Optionally, the first cover body includes inner cover portion and outer cover portion, outer cover portion cover is established and is slided on inner cover portion, outer cover portion with inner cover portion sealing connection, be equipped with the through-hole that supplies the vacuum plunger to wear to establish and slide on the inner cover portion, inner cover portion with vacuum plunger sealing connection, the lower extreme of vacuum plunger is equipped with the limiting plate.

Through adopting above-mentioned technical scheme, the outside of interior cover portion is located to the cover portion cover for outer cover portion and inner cover portion can fold and accomodate in the outside of vacuum plunger, increase the relative stroke of sliding between interior cover portion and the outer cover portion, thereby shorten the length of injection head, are convenient for improve the injection precision.

Optionally, a pressing plate is arranged on one side edge of the inner cover portion close to the top plate, and when the first driving source drives the outer cover portion to ascend, the outer cover portion can be abutted to the lower side of the pressing plate to drive the inner cover portion to ascend.

By adopting the technical scheme, when the outer cover rises, the pressing plate on the inner cover is pressed on the upper side of the outer cover to drive the inner cover to rise synchronously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the vacuum cover assembly is driven by the driving source assembly to slide and be connected on the guide column, a vacuum cavity for accommodating the die assembly die is formed in a sealing mode after connection, an air suction hole is formed in the vacuum cover assembly, and the vacuum cavity is used for forming a vacuum environment through air suction of the air suction hole;

2. the vacuum cover assembly comprises three cover bodies, and compared with one cover body, the distance between the adjacent cover bodies is adjusted by adjusting the corresponding driving source, so that the upper die and the lower die of the die are conveniently mounted on the upper hot plate and the lower hot plate respectively.

3. The first cover body is provided with the inner cover body and the outer cover body, so that the stroke of the first cover body is increased, the length of an injection head is shortened, and the injection precision is guaranteed.

Drawings

Fig. 1 is a schematic view of the overall structure of a vacuum cap type rubber injection machine in the present application.

FIG. 2 is a partial structural schematic diagram of a base, a movable mold plate, a guide column and a lower hot plate of the vacuum cap type rubber injection machine.

Fig. 3 is a partial structural sectional view of the vacuum cap rubber injection machine of the present application.

Fig. 4 is a partial schematic structural view of the vacuum plunger, second housing, first housing, top plate, and drive source assembly of the present application.

Description of reference numerals: 1. a base; 2. a top plate; 3. a guide post; 4. moving the template; 41. a lower hot plate; 42. a sliding hole; 5. a vacuum plunger; 51. a hot plate is arranged; 52. a limiting plate; 6. a vacuum hood assembly; 61. a vacuum chamber; 62. a first cover body; 621. a housing portion; 622. an air exhaust hole; 623. a first slipping cylinder; 624. an inner cover portion; 625. a through hole; 626. pressing a plate; 63. a second cover body; 631. a second slipping cylinder; 64. a third cover body; 7. a movable template driving source; 8. a drive source assembly; 81. a first drive source; 82. a second driving source.

Detailed Description

The present application is described in further detail below with reference to figures 1-4. In the present embodiment, the direction of the coordinate axis z in the figure is taken as the upper direction, and the opposite direction of the z axis is taken as the lower direction.

The embodiment of the application discloses a vacuum cover type rubber injection machine. Referring to fig. 1, a vacuum cap type rubber injection machine includes a base 1, a top plate 2, a guide column 3, a movable platen 4, a lower hot plate 41, a vacuum plug 5, an upper hot plate 51, a vacuum cap assembly 6, a movable platen drive source 7, and a drive source assembly 8.

Referring to fig. 1, the quantity of guide posts 3 is four and is the interval setting, and the equal fixed connection in the downside of roof 2 in the upper end of four guide posts 3, the equal fixed connection in the upside of base 1 of lower extreme of four guide posts 3. The vacuum plunger 5 is attached to the lower side of the top plate 2, the upper heat plate 51 is fixed to the lower side of the vacuum plunger 5, and the vacuum plunger 5 is provided in a cylindrical shape. The top plate 2 is provided with an injection device, which is common knowledge in the field and will not be described herein, and the injection device sequentially penetrates through the top plate 2, the vacuum plunger 5 and the upper hot plate 51 to inject rubber material into a cavity of a mold for closing the mold.

Referring to fig. 2, four sliding holes 42 are formed in the movable template 4, the guide posts 3 penetrate through the sliding holes 42 in a one-to-one correspondence manner, and the movable template 4 is connected with the guide posts 3 in a sliding manner. The movable die plate driving source 7 is fixed on the base 1, in this embodiment, the movable die plate driving source 7 is described by taking an oil cylinder as an example, the oil cylinder is fixed on the base 1, and a piston rod of the oil cylinder is fixed with the lower side of the movable die plate 4 so as to drive the movable die plate 4 to ascend and descend along the guide column 3.

Referring to fig. 1 and 3, the vacuum hood assembly 6 is slidably connected to the guide column 3, and the driving source assembly 8 is used for driving the vacuum hood assembly 6 to ascend and descend. After the mold is closed, the driving source assembly 8 drives the vacuum cover assembly 6 to descend, the lower side of the vacuum cover assembly 6 is in sealing connection with the movable mold plate 4, and the upper side of the vacuum cover assembly 6 is in sealing connection with the vacuum plunger 5, so that a vacuum cavity 61 for accommodating the closed mold is formed.

Referring to fig. 3 and 4, in one embodiment, the vacuum cup assembly 6 includes a first cup 62, the first cup 62 including an outer cup portion 621 and an inner cup portion 624. The outer cover 621 is provided with an air exhaust hole 622 penetrating from top to bottom, the air exhaust hole 622 is provided on the outer cover 621 and used for connecting an air exhaust device, and the air exhaust device is a vacuum pump in this embodiment. The outer cover portion 621 is slidably connected to the guide post 3, specifically, a first sliding barrel 623 is fixed on the outer side wall of the outer cover portion 621, the first sliding barrel 623 corresponds to the guide post 3 one by one, and the first sliding barrel 623 is sleeved on the guide post 3 and slidably connected to the guide post 3 so as to slidably connect the outer cover portion 621 to the guide post 3 and guide the outer cover portion 621 to ascend and descend. The inner cover portion 624 is vertically penetrated, the inner cover portion 624 is penetrated in the outer cover portion 621 and is connected with the outer cover portion 621 in a sliding manner, and the abutting part of the outer side wall of the inner cover portion 624 and the inner side wall of the outer cover portion 621 is sealed by a sealing ring. The inner cover portion 624 is provided with a through hole 625 for the vacuum plunger 5 to slide through, and the joint of the inner side wall of the through hole 625 and the outer side wall of the vacuum plunger 5 is sealed by a sealing ring. The stopper plate 52 is fixed to the lower side of the vacuum plunger 5 so that the inner cover portion 624 is not easily slipped off when sliding relative to the vacuum plunger 5.

Referring to fig. 4, the driving source assembly 8 includes a first driving source 81, the first driving source 81 is an oil cylinder, the first driving source 81 is fixed on the top plate 2, and a piston rod of the first driving source 81 is fixedly connected to the cover 621 to drive the cover 621 to move up and down.

Referring to fig. 4, in order to allow the inner cover portion 624 to be lifted up and down with the outer cover portion 621, a pressure plate 626 is fixed to an upper side of the inner cover portion 624, and the pressure plate 626 extends outward beyond the inner cover portion 624. When the outer cover 621 rises to a certain height, the upper side of the outer cover 621 abuts against the lower side of the pressing plate 626 to drive the inner cover 624 to rise synchronously with the outer cover 621.

Referring to fig. 3 and 4, before the product is injection molded, the movable die plate driving source 7 drives the movable die plate 4 to ascend, the movable die plate 4 drives the lower die to ascend and the upper die to be matched, the first driving source 81 drives the outer cover portion 621 to descend, and meanwhile, the inner cover portion 624 descends under the self gravity and is suspended on the vacuum plunger 5 under the limiting action of the limiting plate 52. The lower side of the outer cover part 621 is connected with the movable template 4 in a sealing way through a sealing ring, so that the outer cover part 621, the inner cover part 624, the vacuum plunger 5 and the movable template 4 are matched to form a closed cavity. Through the vacuum pump to the closed chamber evacuation, reach and set for the vacuum pressure value after, annotate rubber in to the mould, product injection moulding back, to being in the vacuum closed chamber pressure release, first driving source 81 orders about cover portion 621 to rise, and cover portion 621 rises to a take the altitude, and the upside of cover portion 621 and the downside butt of clamp plate 626, cover portion 624 rises together and accomodates in the outside of vacuum plunger 5 in cover portion 621 drives afterwards. And (3) vulcanizing the injection product, driving the movable template 4 to descend by the movable template driving source 7 after vulcanization is finished, separating the lower die from the upper die, and taking out the product.

Referring to FIG. 4, in another embodiment, to facilitate mounting of the upper mold of the mold on the upper hot plate 51, the vacuum enclosure assembly 6 further includes a second enclosure 63. The second cover 63 abuts on the lower side of the cover 621, and the second cover 63 is slidably connected to the guide post 3. Specifically, the outer side of the second cover 63 is fixed with four second sliding cylinders 631 which are connected to the guide posts 3 in a sliding manner, and the number of the second sliding cylinders 631 is four, which correspond to the guide posts 3 one to one.

Referring to fig. 4, the driving source assembly 8 includes a second driving source 82, the second driving source 82 is an oil cylinder, the second driving source 82 is fixed to the housing 621, and a piston rod of the second driving source 82 is fixed to the second housing 63 to drive the second housing 63 to move up and down.

Referring to fig. 3, in a case where the size of the vacuum chamber 61 for accommodating the mold is not changed, the second cover 63 is disposed such that the size of the first cover 62 in the height direction is reduced, so that when the first cover 62 is accommodated outside the vacuum plunger 5, the upper heat plate 51 is exposed outside the first cover 62, and the upper mold is conveniently mounted on the lower side of the upper heat plate 51.

Referring to FIG. 3, in another embodiment, to facilitate mounting of the lower mold of the mold on the lower hot plate 41, the vacuum enclosure assembly 6 further includes a third enclosure 64. The third cover 64 is fixedly connected to the movable template 4 through bolts, the lower side of the third cover 64 is connected with the upper side of the movable template 4 in a sealing manner, the third cover 64 is sleeved outside the lower heat plate 41, the size of the third cover 64 is matched with that of the second cover 63, namely, when the vacuum cavity 61 is formed, the second cover 63 abuts against the upper side of the third cover 64, and the second cover 63 is connected with the third cover 64 in a sealing manner.

The implementation principle of the vacuum cover type rubber injection machine in the embodiment of the application is as follows: initially, the outer cover 621 and the inner cover 624 are accommodated outside the vacuum plunger 5 under the driving of the first driving source 81, the upper side of the outer cover 621 abuts against the lower side of the pressing plate 626, the movable die plate 4 drives the lower die to rise under the driving of the movable die plate driving source 7, the lower die and the upper die are matched, the first driving source 81 drives the outer cover 621 to descend, so that the lower side of the outer cover 621 abuts against the upper side of the second cover 63, at this time, the second cover 63 does not move, the position is fixed during die adjustment, the lower side of the second cover 63 abuts against the upper side of the third cover 64, the inner cover 624 descends together with the outer cover 621 under the self-weight effect, the outer cover 621, the inner cover 624, the second cover 63, the third cover 64, the movable die plate 4 and the vacuum plunger 5 cooperate to form the vacuum cavity 61, the air in the vacuum cavity 61 is pumped out by the air pumping device, and then the product is produced through injection molding. After the product is molded, the first driving source 81 drives the outer cover portion 621 to rise to a certain height, the upper side of the outer cover portion 621 is abutted to the lower side of the pressing plate 626, then the outer cover portion 621 and the inner cover portion 624 are synchronously accommodated outside the vacuum plunger 5 under the driving of the first driving source 81, and the movable die plate driving source 7 drives the movable die plate 4 to drive the lower die to descend, so that the product is taken out of the die.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A vacuum cover type rubber injection machine is characterized in that: comprises a base (1), a top plate (2), guide columns (3), a movable template (4), an upper hot plate (51), a lower hot plate (41), a vacuum plunger (5), a vacuum cover component (6), a movable template driving source (7) and a driving source component (8), wherein the number of the guide columns (3) is at least two, the two ends of the guide columns (3) are respectively fixed on the base (1) and the top plate (2) in a one-to-one correspondence manner, the movable template (4) is connected on the guide columns (3) in a sliding manner, the movable template driving source (7) is arranged on the base (1) to drive the movable template (4) to lift, the lower hot plate (41) is arranged on the movable template (4), the vacuum plunger (5) is fixed on the lower side of the top plate (2), the upper hot plate (51) is fixed on the lower side of the vacuum plunger (5), and the vacuum cover component (6) is connected on the guide columns (3) in a sliding manner, the driving source component (8) is used for driving the vacuum hood component (6) to ascend and descend, and the vacuum hood component (6) is provided with a suction hole (622);

after a lower die on the lower hot plate (41) and an upper die on the upper hot plate (51) are matched, the upper side of the vacuum cover assembly (6) is connected with the vacuum plunger (5) in a sealing mode, and the lower side of the vacuum cover assembly (6) is connected with the movable die plate (4) in a sealing mode, so that a vacuum cavity (61) for containing a matched die is formed.

2. A vacuum cap rubber injection molding machine as claimed in claim 1 wherein: the vacuum cover assembly (6) comprises a first cover body (62), the first cover body (62) is connected to the guide column (3) in a sliding mode, the first cover body (62) is sleeved on the outer side of the vacuum plunger (5) and connected with the vacuum plunger (5) in a sliding mode, the first cover body (62) is connected with the vacuum plunger (5) in a sealing mode, the driving source assembly (8) comprises a first driving source (81), the first driving source (81) is arranged on the top plate (2) and drives the first cover body (62) to slide, and the air suction hole (622) is formed in the side wall of the first cover body (62);

after the upper die and the lower die of the die are closed, the upper side of the first cover body (62) is connected with the vacuum plunger (5) in a sealing mode, and the lower side of the first cover body (62) is connected with the movable die plate (4) in a sealing mode, so that a vacuum cavity (61) is formed outside the die.

3. A vacuum cap rubber injection molding machine as claimed in claim 2 wherein: first sliding cylinders (623) which correspond to the guide columns (3) one to one are fixed on the side walls of the first cover body (62), and the guide columns (3) are sleeved with the first sliding cylinders (623) and connected with the guide columns (3) in a sliding mode.

4. A vacuum cap rubber injection molding machine as claimed in claim 1 wherein: vacuum cover subassembly (6) still include the second cover body (63), the second cover body (63) slide connect in on guide post (3), drive source subassembly (8) include second driving source (82), second driving source (82) are located on first cover body (62) lateral wall and are driven the second cover body (63) and go up and down, and the mould goes up the compound die back on movable mould board (4) with the lower mould of mould, and first cover body (62) and the second cover body (63), vacuum plunger (5), movable mould board (4) cooperation form vacuum chamber (61) that hold the mould.

5. The vacuum cap rubber injection machine of claim 4, wherein: the peripheral side of the second cover body (63) is fixedly provided with a second sliding barrel (631), and the second sliding barrel (631) is sleeved on the guide post (3) and is connected with the guide post (3) in a sliding manner.

6. The vacuum cap rubber injection machine of claim 4, wherein: the vacuum cover assembly (6) further comprises a third cover body (64), the third cover body (64) is arranged on the movable template (4) and is in sealing connection with the movable template (4), the second cover body (63) is connected with the first cover body (62), the third cover body (64) and the movable template (4) are driven by the movable template driving source (7) to be in sealing connection with the lower side of the second cover body (63), and after the upper die and the lower die are assembled, the first cover body (62), the second cover body (63), the third cover body (64) and the vacuum plunger (5) are matched to form a vacuum cavity (61) for accommodating the die.

7. A vacuum cap rubber injection molding machine as claimed in claim 2 wherein: the first cover body (62) comprises an inner cover body (624) and an outer cover body (621), the outer cover body (621) is sleeved on the inner cover body (624) in a sliding mode, the outer cover body (621) is connected with the inner cover body (624) in a sealing mode, a through hole (625) for the vacuum plunger (5) to slide in a penetrating mode is formed in the inner cover body (624), the inner cover body (624) is connected with the vacuum plunger (5) in a sealing mode, and a limiting plate (52) is arranged at the lower end of the vacuum plunger (5).

8. A vacuum cap rubber injection molding machine as claimed in claim 7 wherein: a pressing plate (626) is arranged on one side edge of the inner cover part (624) close to the top plate (2), and when the first driving source (81) drives the outer cover part (621) to ascend, the outer cover part (621) can abut against the lower side of the pressing plate (626) to drive the inner cover part (624) to ascend.