CN211030983U - Accurate quantitative feed arrangement of injection molding machine - Google Patents

Abstract

The utility model relates to the technical field of injection molding, and discloses a precise and quantitative feeding device for an injection molding machine, comprising a feeding device. The inner left wall of the feeding device is respectively provided with a feeding port and a discharging port. The inner wall is fixedly connected with a fixed plate, the side of the fixed plate is fixedly connected with an elastic spring, the side of the elastic spring away from the fixed plate is fixedly connected with a sphere, the inside of the feeding device is slidably connected with a piston, and the left side of the piston is connected. The side is fixedly connected with a movable rod. Through the cooperation between the crank, the connecting rod and the movable rod, the rotary motion is converted into a linear motion, so as to achieve the effect of controlling the movable rod, feeding and discharging. Through the cooperation between the piston, the elastic spring and the ball, When the piston moves to the left, the raw material enters the cavity of the piston from the injection port, and when the piston moves to the right, the raw material in the piston flows out from the discharge port, thereby realizing the effect of controlling the feeding amount of the raw material.

Description

An accurate quantitative feeding device for an injection molding machine

technical field

The utility model relates to the technical field of injection molding, in particular to a precise quantitative feeding device for an injection molding machine.

Background technique

Injection molding is a method of producing shapes for industrial products. Products usually use rubber injection molding and plastic injection molding.

The traditional injection molding machine generally adopts the spiral continuous feeding structure, and the continuous feeding cannot control the feeding amount. When there is too much material at the end of the barrel, the screw consumes extra injection pressure to compress it during injection. , Push the excess material in the barrel, which greatly reduces the effective injection pressure of the plastic entering the mold cavity and makes it difficult to fill the product. When the material at the end of the barrel is too small, due to the lack of raw materials, it will lead to injection molding parts. The local filling is uneven, which affects the quality of injection molded parts.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the utility model provides an accurate quantitative feeding device for an injection molding machine, which has the advantages of accurate quantitative feeding and solves the problem that the feeding amount cannot be precisely controlled.

Technical solutions

In order to achieve the above purpose of accurate and quantitative feeding, the utility model provides the following technical scheme: a precise quantitative feeding device for an injection molding machine, including a feeding device, and a feeding port and a discharging port are respectively opened on the inner left wall of the feeding device The inner wall of the injection port is fixedly connected with a fixed plate, the side of the fixed plate is fixedly connected with an elastic spring, the side of the elastic spring away from the fixed plate is fixedly connected with a sphere, and the inside of the feeding device is slidably connected with a piston , a movable rod is fixedly connected to the left side of the piston, a fixed sleeve is slidably connected to the outer side of the movable rod, an adjustment block is installed on the outer side of the movable rod and located on the right side of the fixed sleeve, and the top of the adjustment block is movable An adjustment rod is connected, the top of the adjustment rod is fixedly connected with a turntable, the inner part of the adjustment block is movably connected with a connecting shaft, the outer side of the connecting shaft is movably connected with a connecting rod, and the left end of the connecting rod is fixedly connected with a connecting sleeve A crank is movably connected inside the connecting sleeve, and a fixing block is movably connected at the left and right ends of the crank.

Preferably, an adjustment groove is provided on the outer side of the movable rod, so as to facilitate the adjustment of the adjustment rod and the fixing of the movable rod.

Preferably, the top of the adjusting block is provided with a threaded hole, and the bottom of the adjusting block is provided with a rectangular groove, so as to facilitate the active connection between the connecting rod and the adjusting block.

Preferably, the injection port and the discharge port have the same composition and structure, but the installation positions are opposite, so as to achieve the purpose of controlling the feeding and discharging.

Preferably, the diameter of the inner hole at the left end of the injection port is larger than the diameter of the inner hole at the right side, so that the sphere can control the feeding of the injection port.

Preferably, the outer side of the fixing plate is provided with a through hole, so that the raw material can pass through the fixing plate.

Preferably, the crank has a U-shaped structure, and drives the connecting rod to move.

beneficial effect

Compared with the prior art, the utility model provides an accurate quantitative feeding device for an injection molding machine, which has the following beneficial effects:

1. This precise and quantitative feeding device for injection molding machine, through the cooperation of crank, connecting rod and movable rod, converts rotary motion into linear motion, so as to achieve the effect of controlling movable rod, feeding and discharging, Through the cooperation between the piston, the elastic spring and the ball, when the piston moves to the left, the raw material enters the cavity of the piston from the injection port, and when the piston moves to the right, the raw material in the piston flows out from the discharge port, thus realizing The effect of controlling the feeding amount of raw materials.

2. This precise and quantitative feeding device for injection molding machine is used through the cooperation between the adjustment rod, the adjustment block and the movable rod. When the quality of the feed needs to be adjusted, the turntable on the adjustment block is rotated to make the turntable drive the adjustment rod. Rotate to adjust the position between the movable rod and the adjustment block, and adjust the quality of the feed in the cavity by changing the stroke of the movable rod to reciprocate left and right. In this way, the effect of accurately changing the feeding amount is achieved.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the material injection port and the material discharge port of the utility model;

Fig. 3 is the structural schematic diagram of the adjusting block of the present invention;

Figure 4 is a schematic diagram of the crank structure of the present invention.

In the picture: 1 feeding device, 2 feeding port, 3 discharging port, 4 piston, 5 movable rod, 6 fixed sleeve, 7 adjusting block, 8 adjusting rod, 9 turntable, 10 connecting rod, 11 crank, 12 fixing block, 13 connecting sleeve, 14 connecting shaft, 15 fixing plate, 16 elastic spring, 17 ball.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to Figure 1-4, a precise quantitative feeding device for injection molding machine, including a feeding device 1, the inner left wall of the feeding device 1 is respectively provided with a feeding port 2 and a discharging port 3. The feeding port 2 and the discharging port are respectively The composition structure in 3 is the same, but the installation position is opposite to achieve the purpose of controlling the feeding and discharging. The inner hole diameter of the left end of the injection port 2 is larger than that of the right inner hole, so that the sphere 17 can control the feeding of the injection port 2 . A fixing plate 15 is fixedly connected to the inner left wall of the injection port 2 , and a through hole is formed on the outer side of the fixing plate 15 so that the raw material can pass through the fixing plate 15 . The right side of the fixed plate 15 is fixedly connected with an elastic spring 16, the right side of the elastic spring 16 is fixedly connected with a ball 17, the inside of the feeding device 1 is slidably connected with a piston 4, and the left side of the piston 4 is fixedly connected with a movable rod 5, the movable rod The outer side of the 5 is provided with an adjustment groove, which is convenient for the adjustment rod 7 to adjust and fix the movable rod 5 . A fixed sleeve 6 is slidably connected to the outer side of the movable rod 5, and an adjustment block 7 is installed on the outer side of the movable rod 5 and located on the right side of the fixed sleeve 6. The top of the adjustment block 7 is provided with a threaded hole, and the bottom of the adjustment block 7 is provided with a rectangular slot. , to facilitate the active connection between the connecting rod 10 and the adjusting block 7 . The top of the adjustment block 7 is movably connected with an adjustment rod 8. Through the cooperation between the adjustment rod 8, the adjustment block 7 and the movable rod 5, when the quality of the feed needs to be adjusted, the turntable 9 on the adjustment block 7 is rotated to make the The turntable 9 drives the adjustment rod 8 to rotate, adjusts the position between the movable rod 5 and the adjustment block 7, and adjusts the quality of the feeding material in the cavity by changing the stroke of the left and right circular reciprocating motion of the movable rod 5. In this way, the effect of accurately changing the feeding amount is achieved. The top of the adjustment rod 8 is fixedly connected with the turntable 9, the inner wall of the adjustment block 7 and the connecting rod 10 are movably connected through the connecting shaft 14, the left end of the connecting rod 10 is fixedly connected with a connecting sleeve 13, and the inner part of the connecting sleeve 13 is movably connected with a The crank 11, the crank 11 is a U-shaped structure, and drives the connecting rod 10 to move. Through the cooperation between the crank 11, the connecting rod 10 and the movable rod 5, the rotary motion is converted into a linear motion, so as to achieve the effect of controlling the movable rod 5, feeding and discharging, through the piston 4, the elastic spring 16 and the ball When the piston 4 moves to the left, the raw material enters the cavity of the piston 4 from the injection port 2, and when the piston 4 moves to the right, the raw material in the piston 4 flows out from the discharge port 3, thereby realizing The effect of controlling the feeding amount of raw materials. The left and right ends of the crank 11 are movably connected with fixed blocks 12 .

Working principle: During the feeding process, the crank 11 rotates to drive the connecting sleeve 13 to rotate, the connecting sleeve 13 drives the connecting rod 10 to move, the connecting rod 10 drives the adjustment block 7 to move, and the adjustment block 7 is fixed on the movable rod 5 and drives the movable rod 5 performs left and right reciprocating motion, through the left and right cyclic reciprocating motion of the piston 4 on the right side of the movable rod 5, the purpose of feeding and discharging is realized. The raw materials in port 2 and discharge port 3 have a tendency to flow into the inner cavity of feeding device 1. The raw material in discharge port 3 flows to the left, which drives the ball 17 in discharge port 3 to move to the left and disconnects. The channel between the discharge port 3 and the inner cavity of the feeding device 1 prevents the raw material in the discharge port 3 from flowing to the left, and only the raw material in the feeding port 2 flows into the cavity of the feeding device 1 and fills up In the cavity of the entire feeding device 1, since the stroke of the piston 4 is fixed, the quality of the raw material contained in the cavity remains unchanged, so as to realize the precise control of the input amount of the raw material. When the piston 4 moves to the left to the maximum stroke, the piston 4 Move the raw material in the cavity to the left to increase the hydraulic pressure in the cavity, push the ball 17 in the injection port 2 to move to the right and disconnect the channel between the cavity and the injection port 2, and at the same time, push the discharge port The ball 17 in 3 moves to the right to open the channel between the cavity and the discharge port 3. At this time, the piston 4 pushes the raw material in the cavity to flow out from the discharge port 3 to achieve precise control of the feeding amount. When adjusting the quality of the feeding material, the turntable 9 on the adjustment block 7 can be rotated, so that the turntable 9 drives the adjustment rod 8 to rotate, and the position between the movable rod 5 and the adjustment block 7 can be adjusted. stroke, adjust the quality of the feed in the cavity.

To sum up, the precise quantitative feeding device for an injection molding machine and the precise quantitative feeding device for an injection molding machine convert the rotary motion into a straight line through the cooperation between the crank 11 , the connecting rod 10 and the movable rod 5 . movement, so as to achieve the effect of controlling the movable rod 5, feeding and discharging. Through the cooperation between the piston 4, the elastic spring 16 and the ball 17, when the piston 4 moves to the left, the raw material enters the piston from the injection port 2. In the cavity 4, when the piston 4 moves to the right, the raw material in the piston 4 flows out from the discharge port 3, thereby realizing the effect of controlling the feeding amount of the raw material.

In addition, the precise quantitative feeding device of the injection molding machine is used through the coordination between the adjusting rod 8, the adjusting block 7 and the movable rod 5. When the quality of the feeding material needs to be adjusted, by rotating the turntable 9 on the adjusting block 7, The turntable 9 drives the adjustment rod 8 to rotate, adjusts the position between the movable rod 5 and the adjustment block 7, and adjusts the quality of the feeding material in the cavity by changing the stroke of the left and right circular reciprocating motion of the movable rod 5. In this way, the effect of accurately changing the feeding amount is achieved.

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

Claims (7)

1. An accurate quantitative feeding device for an injection molding machine, comprising a feeding device (1), characterized in that: a charging port (2) and a discharging port (3) are respectively provided on the inner left wall of the feeding device (1). ) A fixing plate (15) is fixedly connected to the inner wall of the injection port (2), and an elastic spring (16) is fixedly connected to the side of the fixing plate (15), and the elastic spring (16) is far away from the fixing plate (15). A sphere (17) is fixedly connected to one side of the feeding device (1), a piston (4) is slidably connected to the inside of the feeding device (1), and a movable rod (5) is fixedly connected to the left side of the piston (4). A fixed sleeve (6) is slidably connected to the outside of the rod (5), and an adjustment block (7) is installed on the outside of the movable rod (5) and located on the right side of the fixed sleeve (6). An adjusting rod (8) is movably connected to the top, a turntable (9) is fixedly connected to the top of the adjusting rod (8), a connecting shaft (14) is movably connected to the inside of the adjusting block (7), and the connecting shaft (14) A connecting rod (10) is movably connected to the outer side of the connecting rod (10), a connecting sleeve (13) is fixedly connected to the left end of the connecting rod (10), and a crank (11) is movably connected inside the connecting sleeve (13). The front and rear ends of 11) are movably connected with fixed blocks (12). 2 . The precise quantitative feeding device for an injection molding machine according to claim 1 , wherein an adjustment groove is provided on the outer side of the movable rod ( 5 ). 3 . 3. An accurate quantitative feeding device for an injection molding machine according to claim 1, characterized in that: the top of the adjusting block (7) is provided with a threaded hole, and the bottom of the adjusting block (7) is provided with a rectangular groove . 4. An accurate quantitative feeding device for an injection molding machine according to claim 1, characterized in that: the injection port (2) and the discharge port (3) are both formed by a fixed plate (15), an elastic spring (16) ) and a sphere (17) structure. 5 . The precise quantitative feeding device for an injection molding machine according to claim 1 , wherein the inner hole diameter of the left end of the injection port ( 2 ) is larger than that of the right inner hole. 6 . 6 . The precise quantitative feeding device for an injection molding machine according to claim 1 , wherein a through hole is formed on the outer side of the fixing plate ( 15 ). 7 . 7 . The precise quantitative feeding device for an injection molding machine according to claim 1 , wherein the crank ( 11 ) has a U-shaped structure. 8 .

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