Structure for dispersing and mixing raw materials in charging barrel of injection molding machine

Abstract

The utility model belongs to the technical field of injection molding machines, and particularly relates to a raw material dispersing and mixing structure in a charging barrel of an injection molding machine. Comprising a charging barrel, a feeding screw rod, a non-return ring, a screw rod head, a rotating rod, a spline rod, mixing blades and a driving mechanism, the feeding screw rod is rotatably arranged in the charging barrel, the screw rod head is rotatably arranged on the left side of the feeding screw rod, the non-return ring is slidably arranged on the outer side of the screw rod head, and the spline rod is rotatably arranged on the rotating rod. The rotating rod is rotationally connected to the inner side of the feeding screw rod, the spline rod is connected to the end, close to the screw rod head, of the rotating rod, and the spline rod slidably penetrates through the screw rod head and is connected with the mixing blade. By arranging the mixing blades and combining the rotating rod driven by the servo motor, the spline rod and other components, the melt material is effectively stirred, and the uniform dispersion degree of the material is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection molding machine technical field especially relates to a kind of raw material dispersion mixing structure in injection molding machine barrel. BACKGROUND

[0002] Injection molding machine is indispensable equipment in plastic processing industry, it is cooled into shape by being pushed into mould after being heated and melted by plastic raw material, barrel is one of the core components of injection molding machine, its inside is equipped with feeding screw, for advancing and preheating plastic raw material.In traditional design, barrel and feeding screw are mainly responsible for the delivery and preliminary melting of material, to ensure that material can smoothly enter mould cavity under the action of pressure, and finally form the required product shape.

[0003] The injection molding machine in prior art lacks effective mechanism to ensure that plastic raw material can be fully dispersed and mixed before entering mould when producing plastic products.Although feeding screw can help the melting of material to some extent, due to the lack of special mixing structure, the final product may have uneven material distribution problem, thereby affecting the quality of product. UTILITY MODEL CONTENTS

[0004] In order to overcome the shortcomings that the lack of special mixing structure leads to uneven material distribution in final product and affects product quality, the utility model provides a kind of raw material dispersion mixing structure in injection molding machine barrel.

[0005] A kind of raw material dispersion mixing structure in injection molding machine barrel, including the barrel, feeding screw, check ring, screw head, rotating rod, spline rod, mixing blade and drive mechanism, the barrel is rotationally equipped with the feeding screw, the feeding screw left side is rotationally equipped with the screw head, the screw head outside is slidably equipped with the check ring, the feeding screw is movably and rotationally connected with the rotating rod, the rotating rod is connected with the spline rod at one end close to the screw head, the spline rod is slidably through the screw head and is connected with the mixing blade, the screw head is equipped with the receiving groove for receiving the mixing blade at one end away from the feeding screw, drive mechanism is used to drive the rotating rod moves and rotates.

[0006] Optionally, drive mechanism includes second electric slide rail, second sliding seat, servo motor and belt transmission assembly, the moving part of the second electric slide rail is equipped with the second sliding seat, the second sliding seat is installed on the servo motor, the output shaft of the servo motor is connected with the rotating rod by the belt transmission assembly.

[0007] Optionally, it further includes second bearing seat, the second sliding seat is installed on the second bearing seat, and the rotating rod is rotationally installed in the second bearing seat.

[0008] Optionally, it further comprises a first electric sliding rail, a first sliding seat and the second electric sliding rail, the second electric sliding rail is arranged below the first electric sliding rail, the first sliding seat is slidably connected to the moving part of the first electric sliding rail, and the first sliding seat is connected to the bottom of the second electric sliding rail.

[0009] Optionally, it further comprises a first bearing seat, the first bearing seat is arranged on the top of the first sliding seat, and the first bearing seat is rotatably connected to the feeding screw.

[0010] Optionally, the receiving groove of the screw head is provided with a discharging hole.

[0011] Compared with the prior art, the utility model has the advantages that: the utility model discloses a mixing blade and combines the components such as the rotating rod and the spline rod driven by the servo motor, realizes the effective stirring of the molten material, and significantly improves the uniform dispersion of the material. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0013] Figure 2 It is the sectional structure schematic diagram of the utility model.

[0014] Figure 3 It is the three-dimensional structure schematic diagram of the utility model check ring, screw head, spline rod and mixing blade.

[0015] Figure 4 It is the sectional structure schematic diagram of the utility model screw head.

[0016] Figure 5 It is the three-dimensional structure schematic diagram of the utility model driving mechanism.

[0017] Markings in the drawings: 1: barrel, 2: feeding screw, 3: check ring, 4: screw head, 5: rotating rod, 6: receiving groove, 7: spline rod, 8: mixing blade, 9: discharging hole, 10: first electric sliding rail, 11: first sliding seat, 12: first bearing seat, 13: second electric sliding rail, 14: second sliding seat, 15: second bearing seat, 16: servo motor, 17: belt transmission assembly. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] A material dispersion and mixing structure inside the barrel of an injection molding machine, such as Figures 1-5 As shown, the device includes a barrel 1, a feeding screw 2, a check ring 3, a screw head 4, a rotating rod 5, a splined rod 7, mixing blades 8, and a drive mechanism. The feeding screw 2 is rotatably mounted inside the barrel 1. The right end of the feeding screw 2 is connected to a drive mechanism (not shown in the figure), which drives the feeding screw 2 to rotate. The screw head 4 is rotatably mounted on the left side of the feeding screw 2. A check ring 3 is slidably mounted on the outside of the screw head 4. A circular hole is axially opened inside the feeding screw 2, allowing it to move and rotate within the circular hole. A rotating rod 5 is connected to the left end of the rotating rod 5, and a splined rod 7 is connected to the left end of the rotating rod 5. The splined rod 7 slides through the screw head 4, and a mixing blade 8 is connected to the left end of the splined rod 7. The end of the screw head 4 away from the feeding screw 2 is provided with a receiving groove 6 for receiving the mixing blade 8. The cross-section of the receiving groove 6 and the mixing blade 8 are both cross-shaped. A discharge hole 9 is provided at the receiving groove 6 of the screw head 4. When the mixing blade 8 retracts into the receiving groove 6, the material between the two is discharged through the discharge hole 9. The drive mechanism is used to drive the rotating rod 5 to move and rotate.

[0020] like Figure 5 As shown, the drive mechanism includes a second electric slide rail 13, a second sliding seat 14, a second bearing seat 15, a servo motor 16, and a belt drive assembly 17. The second electric slide rail 13 has a second sliding seat 14 on its moving part. Two second bearing seats 15 are installed on the top left side of the second sliding seat 14. The right end of the rotating rod 5 is rotatably installed in the two second bearing seats 15 to ensure the stability of the rotating rod 5 when it rotates. The servo motor 16 is installed on the front side of the second sliding seat 14. The output shaft of the servo motor 16 is connected to the rotating rod 5 through the belt drive assembly 17.

[0021] like Figure 5 As shown, it also includes a first electric slide rail 10, a first sliding seat 11, a first bearing seat 12, and a second electric slide rail 13. The first electric slide rail 10 is located below the second electric slide rail 13. The second electric slide rail 13 is parallel to the first electric slide rail 10. The first sliding seat 11 is slidably connected to the moving part of the first electric slide rail 10. The first bearing seat 12 is installed on the top left side of the first sliding seat 11. The first bearing seat 12 is rotatably connected to the right end of the feeding screw 2. The top of the first sliding seat 11 is connected to the bottom of the second electric slide rail 13.

[0022] At the beginning, the mixing blade 8 is completely accommodated into the accommodation groove 6 of the screw head 4, when injection molding, the injection material enters the barrel 1 through the hopper, when the feeding screw 2 rotates to feed, the screw head 4 does not rotate, the material after heating and melting enters the left end of the barrel 1 through the screw head 4, before the material is extruded by the feeding screw 2, the servo motor 16 is started to rotate, the rotating rod 5 is driven to rotate through the belt transmission assembly 17, the screw head 4 and the mixing blade 8 are synchronously rotated by the spline rod 7, at the same time, the second electric sliding rail 13 is started to drive the second sliding seat 14 to reciprocate left and right, the mixing blade 8 rotates and reciprocates at the same time, so that the molten material can be mixed and stirred, and the material is uniformly dispersed, after the stirring is completed, the second electric sliding rail 13 is started to drive the second sliding seat 14 to reset to the right, the mixing blade 8 returns to the accommodation groove 6, the material in the accommodation groove 6 is extruded by the mixing blade 8, and the material is discharged to the right through the discharge hole 9, so that the material in the accommodation groove 6 can be prevented from being left, after the mixing blade 8 is reset, the servo motor 16 is closed, the first electric sliding rail 10 is started again, the first electric sliding rail 10 drives the first sliding seat 11 to move to the left, the feeding screw 2, the mixing blade 8 and the screw head 4 move to the left to push the material out of the left end of the barrel 1 to the injection mold, and the check ring 3 prevents the material from moving to the right, since the material is uniformly dispersed, the quality of the injection molded product can be ensured, and when the injection molding is completed, the first electric sliding rail 10 is started to drive the first sliding seat 11 to reset to the right, and the feeding screw 2, the mixing blade 8 and the screw head 4 are reset.

[0023] The preferred embodiments of the utility model are described above, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principles of the utility model, and these improvements and decorations should also be regarded as the protection range of the utility model.

Claims

1. A raw material dispersion and mixing structure in an injection molding machine cylinder, comprising a cylinder, a feeding screw, a check ring and a screw head, the cylinder is rotatably provided with the feeding screw, the left side of the feeding screw is rotatably provided with the screw head, and the outer side of the screw head is slidably provided with the check ring, characterized in that: The device further comprises a rotating rod, a spline rod, a mixing blade and a driving mechanism, the rotating rod is movably and rotatably connected in the feeding screw rod, the spline rod is connected to one end of the rotating rod close to the screw head, the spline rod is slidably penetrated through the screw head and connected with the mixing blade, the screw head is provided with a receiving groove for receiving the mixing blade at the end away from the feeding screw rod, and the driving mechanism is used to drive the rotating rod to move and rotate. ​ 2. The material dispersing and mixing structure in the barrel of an injection molding machine according to claim 1, characterized in that: The driving mechanism comprises a second electric sliding rail, a second sliding seat, a servo motor and a belt transmission assembly, the second electric sliding rail is provided with the second sliding seat on the moving part, the second sliding seat is installed with the servo motor, and the output shaft of the servo motor is in transmission connection with the rotating rod through the belt transmission assembly.

3. The material dispersing and mixing structure in the barrel of an injection molding machine according to claim 2, characterized in that: The device further comprises a second bearing seat, the second sliding seat is installed with the second bearing seat, and the rotating rod is rotatably installed in the second bearing seat.

4. The material dispersing and mixing structure in the cylinder of an injection molding machine according to claim 3, characterized in that: The device further comprises a first electric sliding rail, a first sliding seat and the second electric sliding rail, the second electric sliding rail is provided with the first electric sliding rail below, the first electric sliding rail is slidably connected with the first sliding seat on the moving part, and the first sliding seat is connected with the bottom of the second electric sliding rail.

5. The material dispersing and mixing structure in the barrel of an injection molding machine according to claim 4, characterized in that: The device further comprises a first bearing seat, the first sliding seat is installed with the first bearing seat on the top, and the first bearing seat is rotatably connected with the feeding screw rod.

6. The material dispersing and mixing structure in the barrel of an injection molding machine according to claim 1, characterized in that: The receiving groove of the screw head is provided with a discharging hole.

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