CN203650827U - Quantitative feeding cylinder mechanism of injection molding machine - Google Patents

Abstract

The utility model discloses a ration feed cylinder body mechanism of injection molding machine, it is assembled between drying cylinder and injection molding machine, and ration feed cylinder body mechanism includes: the cylinder barrel unit is provided with a cylinder barrel, a cylinder chamber is arranged in the cylinder barrel, and a feed inlet and a discharge outlet are respectively arranged at staggered positions of the upper cylinder wall and the lower cylinder wall of the cylinder barrel; the first piston and the second piston are separately accommodated in the cylinder chamber, a piston connecting rod is assembled between the two pistons, a quantitative material containing cylinder chamber is formed between the two pistons, the feeding hole is communicated with the quantitative material containing cylinder chamber and can be movably shielded by the second piston, and the discharging hole is communicated with the quantitative material containing cylinder chamber and can be movably shielded by the first piston. According to the utility model discloses a quantitative feed cylinder mechanism of injection molding machine, it can adopt the volume that the ration held the feed cylinder room as the quantitative control of plastic grain raw materials to supply with quantitative plastic grain raw materials to injection molding machine.

Description

Quantitative feeding cylinder mechanism of injection molding machine

technical field

The utility model relates to a cylinder body mechanism, in particular to a quantitative feeding cylinder body mechanism applied to injection molding.

Background technique

The injection molding machine uses plastic pellets as raw material, and melts them into desired products. Plastic particles are susceptible to moisture absorption at room temperature, which affects the quality of the product. Therefore, before injection molding, the plastic pellets must be dried in a drying cylinder before being supplied to the injection molding machine.

The plastic pellet raw material required for each injection molding of the injection molding machine must be a fixed amount. In order to ensure that the supply of plastic pellets is a fixed amount each time, a quantitative feeding mechanism is usually installed at the discharge port of the drying cylinder, and then fed to the injection molding machine.

The existing quantitative feeding mechanism is to set a valve mechanism that can be opened or closed at the discharge port of the drying cylinder. When the valve is opened, the material is supplied, and when the valve is closed, the material is stopped. The purpose of quantitative feeding is achieved according to the opening time of the control valve. That is to say, the existing quantitative feeding mechanism uses the feeding time to achieve the purpose of quantitative feeding.

However, the discharge volume of the drying cylinder per unit time will vary with the pressure inside the drying cylinder, that is, when there is a large amount of plastic pellets stored in the drying cylinder, the pressure applied to the discharge port will be will increase, and the output of plastic pellets from the discharge port will increase in unit time; on the contrary, when there is a small amount of plastic pellets stored in the drying cylinder, the pressure applied to the discharge port will change. If it is small, the plastic granule raw material output from the discharge port will be less deformed in a unit time. Therefore, the existing quantitative feeding mechanism cannot guarantee a fixed feeding amount according to the mode of controlling the feeding time.

When the amount of plastic pellets supplied to the injection molding machine is too much, the excess plastic pellets will be temporarily stored in the waiting room of the injection molding machine for use in the next injection molding process. However, during the time it stays in the waiting room, it is easy to absorb moisture because it is in the environment of room temperature. Therefore, it is very inconvenient to dry the plastic pellet raw materials staying in the waiting room before the next injection molding process. In short, the waiting room must be kept in a heated and dry state, which increases the manufacturing cost.

When the amount of plastic pellets supplied to the injection molding machine is insufficient, the injection molding machine will shut down and restart when sufficient plastic pellets are replenished. This intermittent molding situation of stopping and restarting will cause damage to the product. adverse phenomena.

Utility model content

The purpose of the utility model is to provide a quantitative feeding cylinder mechanism of an injection molding machine, which can ensure quantitative feeding to the injection molding machine.

According to one aspect of the present invention, a quantitative feeding cylinder mechanism of an injection molding machine is provided, which is assembled between the drying cylinder and the injection molding machine. The quantitative feeding cylinder mechanism includes: a cylinder unit, which has a cylinder cylinder, and a first end seat and a second end seat arranged at opposite ends of the cylinder, the inside of the cylinder is a cylinder chamber, and the first and second end seats are respectively provided with a first interface and a second interface, Each of the first and second interfaces communicates with the cylinder chamber, and the upper cylinder wall and the lower cylinder wall of the cylinder are respectively provided with a feed inlet and a discharge outlet at positions where the upper cylinder wall and the lower cylinder wall are staggered; the first piston and the lower cylinder wall The second piston is accommodated in the cylinder chamber of the cylinder at intervals, the cylinder chamber is bounded by the first and second pistons, and a process cylinder chamber is formed between the first piston and the first end seat, between the second piston and the second piston. A return cylinder chamber is formed between the two end seats, and a quantitative capacity cylinder chamber is formed between the first and second pistons. The material cylinder chamber communicates with and can be movably covered by the second piston, the material outlet communicates with the quantitative container chamber and can be movably shielded by the first piston; and a piston connecting rod, which is assembled between the first piston and the second piston between. The volume of the quantitative capacity cylinder chamber is used as the quantitative control of the plastic pellet raw material, so as to be quantitatively supplied to the injection molding machine.

According to an embodiment of the present invention, the upper and lower parts of the cylinder are respectively assembled with an upper bearing and a lower bearing, which are respectively provided with a first feed port and a first discharge port, and the first feed port The first discharge port communicates with the feed port and the discharge port respectively, and the upper seat and the lower seat each have an arc-shaped inner surface and a planar outer surface.

According to an embodiment of the utility model, the upper bearing seat and the lower bearing seat are respectively assembled with an upper supporting plate and a lower supporting plate, which are respectively provided with a second feeding port and a second discharging port, and the second feeding port The port and the second discharge port communicate with the first feed port and the second discharge port respectively.

According to an embodiment of the utility model, the lower bearing plate is assembled with a distributor, which has an annular tank body, and the annular tank body is provided with an input port, a first output port and a second output port, and the input port and the discharge port are separated. In communication, the interior of the annular tank body is provided with a rotatable dial between the first output port and the second output port, and the dial can block the first output port or the second output port.

The beneficial effect of the utility model is that, according to the quantitative feeding cylinder mechanism of the injection molding machine of the utility model, through a quantitative feeding cylinder mechanism, it can be output to different output ports, thereby supplying different sets of injection molding machines Use, and the volume of the quantitative capacity cylinder chamber can be used as the quantitative control of the plastic pellet raw material, so that the quantitative plastic pellet raw material can be supplied to the injection molding machine.

Description of drawings

Fig. 1 is a schematic diagram showing the appearance of the quantitative feeding cylinder mechanism of the injection molding machine according to an embodiment of the present invention.

Fig. 2 is an exploded view of the quantitative feeding cylinder mechanism shown in Fig. 1 .

Fig. 3 is a sectional view taken along line A-A of the quantitative feeding cylinder mechanism shown in Fig. 1 .

Fig. 4 is a sectional view taken along line B-B of the quantitative feeding cylinder mechanism shown in Fig. 1 .

Fig. 5 is a schematic diagram of the action of the quantitative feeding cylinder mechanism shown in Fig. 3, showing that the first and second pistons are in the progressing and feeding states.

Fig. 6 is a schematic diagram of the action of the quantitative feeding cylinder mechanism shown in Fig. 3, showing that the first and second pistons are in the state of returning and discharging.

FIG. 7 is a schematic diagram of the appearance of the quantitative feeding cylinder mechanism shown in FIG. 1 with a distributor added.

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings.

The quantitative feeding cylinder mechanism of the injection molding machine according to an embodiment of the present invention can be applied to the cylinder mechanism of a pneumatic cylinder or a hydraulic cylinder. The quantitative feeding cylinder mechanism of the utility model is assembled between the drying cylinder and the injection molding machine. Referring to FIG. 1 to FIG. 4 , the quantitative feeding cylinder mechanism according to an embodiment of the present invention includes a cylinder unit 100 , a first piston 200 , a second piston 300 and a piston connecting rod 400 .

The cylinder unit 100 has a cylinder 110 and a first end seat 120 and a second end seat 130 disposed on opposite ends of the cylinder. The inside of the cylinder 110 is a cylinder chamber 140 . The first end block 120 and the second end block 130 are respectively provided with a first port 121 and a second port 131 , and these ports communicate with the cylinder chamber 140 . The upper cylinder wall and the lower cylinder wall of the cylinder 110 are respectively provided with a material inlet 111 and a material outlet 112 at staggered positions. The first end base 120 and the second end base 130 are square, and the four corners of the two end bases are connected with each other by bolts 150 .

The first piston 200 and the second piston 300 are accommodated in the cylinder chamber 140 of the cylinder 110 at a distance from each other. The cylinder chamber 140 is bounded by the first piston 200 and the second piston 300, and a process cylinder chamber 141 is formed between the first piston 200 and the first end seat 120, and a process cylinder chamber 141 is formed between the second piston 300 and the second end seat 130. A return stroke cylinder chamber 142 is formed, and a quantitative material containing cylinder chamber 143 is formed between the first piston 200 and the second piston 300 . The process cylinder chamber 141 and the return cylinder chamber 142 communicate with the first port 121 and the second port 131 respectively. The feed port 111 of the cylinder 110 is communicated with the quantitative capacity material cylinder chamber 143, and can be actively covered by the second piston 300; Piston 200 activities are covered. That is, according to the forward and backward movements of the first piston 200 and the second piston 300 , the material outlet 112 and the material inlet 111 can be respectively shielded.

The piston connecting rod 400 is assembled between the first piston 200 and the second piston 300 , so that the first piston 200 and the second piston 300 can advance and retreat in unison.

An upper seat 510 is assembled on the top of the cylinder 110 . The upper seat 510 is provided with a first feeding port 511 corresponding to the feeding port 111 . The upper seat 510 has an arc-shaped inner surface 512 and a planar outer surface 513. The arc-shaped inner surface 512 can match the arc-shaped outer surface of the cylinder 110, and the planar outer surface 513 can be easily combined with other components.

The upper base 510 is assembled with an upper support plate 610 . The upper supporting plate 610 is provided with a second feeding port 611 corresponding to the first feeding port 511 of the upper supporting plate 510 . The upper support plate 610 is used for assembling the drying cylinder 800 and communicates with the drying cylinder 800 through the second feeding port 611 .

Similarly, a lower seat 520 is assembled on the lower part of the cylinder 110 . The lower seat 520 is provided with a first discharge port 521 corresponding to the discharge port 112 . The lower seat 520 also has a curved inner surface 522 and a flat outer surface 523. The curved inner surface 522 can match the curved outer surface of the cylinder 110, and the flat outer surface 523 can be easily combined with other components.

Similarly, the lower bearing 520 is assembled with the lower bearing plate 620 . The lower supporting plate 620 is provided with a second discharge port 621 corresponding to the first discharge port 521 of the lower support 520 . The lower support plate 610 is used for assembling other components, such as the dispenser shown in FIG. 7 .

Please refer to Fig. 5 together. When feeding materials, the first piston 200, the piston connecting rod 400 and the second piston 300 are in process action. 121 is injected into the process cylinder chamber 141, and the medium gradually fills the process cylinder chamber 141 and gradually pushes the first and second pistons and their piston connecting rods backward (in the direction of the second end seat 130), so that the The material inlet 111 is in an open state, while the previously opened material outlet 112 is covered by the first piston 200 , so the quantitative container chamber 143 is in a state where the material inlet 111 is open and the material outlet 112 is covered. Therefore, the raw plastic pellets stored in the drying cylinder 800 and dried by the drying cylinder can enter the quantitative container chamber 143 through the second feeding port 611 , the first feeding port 511 , and the feeding port 111 .

Please also refer to FIG. 6 , when the quantitative capacity cylinder chamber 143 is filled with material, the material inlet 111 stops feeding, and controls the first piston 200, the piston connecting rod 400 and the second piston 300 to be in the progress action, At this time, the medium (gas or oil) is injected into the return cylinder chamber 142 from the second port 131 of the second end seat 130, and the medium gradually fills the return cylinder chamber 142 and gradually moves the first and second pistons and their piston rods forward. (the direction of the first end seat 120) advances, so that the discharge port 112 that was originally covered by the first piston 200 presents an open state, while the previously opened feed port 111 presents a state that is covered by the second piston 300, thus quantifying The material-holding cylinder chamber 143 presents a state in which the material outlet 112 is opened and the material inlet 111 is covered. Therefore, the dried plastic pellet raw material fed into the quantitative container chamber 143 can be output to the injection molding machine (not shown) through the discharge port 112, the first discharge port 521 and the second discharge port 621. ) for injection molding use.

According to the quantitative feeding cylinder body mechanism of one embodiment of the present invention, the volume is used as the quantitative control, that is, the amount of the plastic pellet raw material accommodated in the quantitative capacity cylinder chamber 143 is supplied to the injection molding machine, and the quantitative capacity The accommodating space of the material tank chamber 143 is a fixed capacity, so the amount of the plastic pellet raw material supplied to the injection molding is also guaranteed to be quantitative, and there will be no shortage or excess.

Adjusting the distance between the first piston 200 and the second piston 300, that is, adjusting the length of the piston connecting rod 400, can adjust the space size of the quantitative material-holding cylinder chamber 143 accordingly, and accordingly adjust the amount of plastic pellets supplied. quantity.

Compared with the injection molding machine, due to the short time of each feeding and discharging action stroke of the quantitative feeding cylinder mechanism, and the longer time of each injection molding action stroke of the injection molding machine, it can be achieved through a Quantitative feeding cylinder mechanism is supplied to multiple injection molding machines. That is, please refer to FIG. 7 , according to the quantitative feeding cylinder mechanism of an embodiment of the present invention, a distributor 700 is assembled on the lower bearing plate 620, which has an annular groove body 710, and the annular groove body 710 is provided with separate input port 711 , a first output port 712 and a second output port 713 . Wherein, the input port 711 communicates with the material output port 112 , and the first output port 712 and the second output port 713 respectively communicate with different injection molding machines. A rotatable dial 720 is provided inside the annular tank 710 between the first output port 712 and the second output port 713 , and the dial 720 can block the first output port 712 or the second output port 713 . In a state of use, the shifting plate 720 is shifted to and blocks the second output port 713, so that the plastic pellet raw material supplied from the discharge port 112 can be fed to an injection molding machine (not shown) through the first output port 712 , for the injection molding of the injection molding machine; on the contrary, in another use state, the dial 720 is shifted to and blocks the first output port 712, so that the plastic pellet raw material supplied by the discharge port 112 can pass through the second output port 713 feeds to another injection molding machine (not shown) for injection molding by the other injection molding machine.

Although the utility model is disclosed as above in terms of implementation, it is not intended to limit the utility model, and any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. The scope of protection of a utility model should be defined by the claims.

Claims (4)

1. a quantitative feeding cylinder mechanism for Jet forming machine, it is assembled between drying and Jet forming machine, it is characterized in that, and this quantitative feeding cylinder mechanism comprises:

Cylinder barrel unit, it has cylinder barrel, and be located at this cylinder barrel relatively to first end seat and the second end seat of end, the inside of this cylinder barrel is cylinder chamber, this first and second end seat is respectively equipped with first interface and the second interface, this first and second interface communicates with this cylinder chamber respectively, and the position that the upper barrel of this cylinder barrel and lower barrel barrel and lower barrel on this are staggered is respectively equipped with charging aperture and discharging opening;

First piston and the second piston, it is separated by and is placed in the cylinder chamber of this cylinder barrel, this cylinder chamber is taking this first and second piston as boundary, between this first piston and this first end seat, form process cylinder chamber, between this second piston and this second end seat, form kicker cylinder chamber, and material cylinder chamber is quantitatively held in formation between this first and second piston, this process cylinder chamber is communicated with respectively this first interface and this second interface with this kicker cylinder chamber, this charging aperture quantitatively holds material cylinder chamber with this and communicates and can be covered by this second piston institute activity, this discharging opening quantitatively holds material cylinder chamber with this and communicates and can be covered by this first piston institute activity, and

Piston rod, it is assembled between this first piston and this second piston.

2. the quantitative feeding cylinder mechanism of Jet forming machine as claimed in claim 1, it is characterized in that, the top of described cylinder barrel and bottom are assembled with respectively bearing and lower seat, on this, bearing and this lower seat are respectively equipped with the first charging port and the first discharging port, this the first charging port communicates with described charging aperture is corresponding with described discharging opening respectively with this first discharging port, and on this, bearing and this lower seat respectively have arc-shaped inner surface and planar outer surfaces.

3. the quantitative feeding cylinder mechanism of Jet forming machine as claimed in claim 2, it is characterized in that, described upper bearing and described lower seat are assembled with respectively top deck and bottom deck, this top deck and this bottom deck are respectively equipped with the second charging port and the second discharging port, this second charging port and this second discharging port respectively with described the first charging port with described second discharging port is corresponding communicates.

4. the quantitative feeding cylinder mechanism of Jet forming machine as claimed in claim 3, it is characterized in that, described bottom deck is assembled with distributor, this distributor has annular trough body, this annular trough body is provided with input port, the first delivery outlet and the second delivery outlet separated mutually, this input port is communicated with described discharging opening, and the inside of this annular trough body is provided with the plate that can rotate between this first delivery outlet and this second delivery outlet, and this plate can intercept this first delivery outlet or this second delivery outlet.

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