Ultra-high molecular weight polyethylene screw injection molding machine

Abstract

The utility model relates to the field of injection molding, and discloses an ultra-high molecular weight polyethylene screw injection molding machine which comprises a machine body, a material conveying bin is arranged on the inner wall of the machine body, a material pushing bin is arranged on the inner wall, located below the material conveying bin, of the machine body, a feeding hopper is fixedly connected to the top end of the machine body, and a motor is fixedly connected to the outer wall of the machine body. An output shaft of the motor penetrates through the inner wall of the machine body, a mounting mechanism is arranged in the conveying bin and comprises a rotating disc, the rotating disc is fixedly connected with the output shaft of the motor, an inserting hole is formed in the left end of the rotating disc, and a threaded rod is arranged in the conveying bin. According to the utility model, through the arrangement of the mounting mechanism, a worker can replace the threaded rod according to the requirement of a required finished product before injection molding, so that the threaded rod in the equipment can meet the requirement of the finished product of the injection molding, and the effect of saving cost is achieved.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, in particular to an ultra-high molecular weight polyethylene screw injection molding machine. Background Art

[0002] Screw injection molding machine is a kind of plastic processing equipment, which uses the rotation and propulsion of the screw to melt the plastic raw materials and inject them into the mold, and then obtain the plastic products of the desired shape after cooling and shaping.

[0003] At present, when using an injection molding machine, the screw is the core component of the injection molding process, which determines the uniformity of plastic melt mixing and the quality of the product. The screw of the injection molding machine is mostly made of high-strength alloy steel. After precision processing and heat treatment, it has good wear resistance and corrosion resistance. When put into use, its length, diameter ratio, screw groove depth, compression ratio and other parameters directly affect the plasticizing efficiency and product quality.

[0004] At present, the screw of the existing ultra-high molecular weight polyethylene screw injection molding machine is often set inside the equipment, so it is often difficult to replace the screw when manufacturing different finished products. Therefore, when it is necessary to use screws with different lengths, diameter ratios or screw groove depths for pushing materials, it is often more troublesome. Therefore, an ultra-high molecular weight polyethylene screw injection molding machine is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides an ultra-high molecular weight polyethylene screw injection molding machine, aiming to improve the problem in the prior art that it is inconvenient to replace different screws.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultra-high molecular weight polyethylene screw injection molding machine, comprising a body, the inner wall of the body is provided with a feeding bin, the inner wall of the body below the feeding bin is provided with a pushing bin, the top of the body is fixedly connected to the feeding hopper, the outer wall of the body is fixedly connected to the motor, the output shaft of the motor passes through the inner wall of the body, a mounting mechanism is provided inside the feeding bin, the mounting mechanism includes a turntable, the turntable is fixedly connected to the output shaft of the motor, the left end of the turntable is provided with a jack, a threaded rod is provided inside the feeding bin, the right end of the threaded rod is fixedly connected to the connecting disk, the right end of the connecting disk is fixedly connected to the insert block, and the left end of the feeding bin is provided with a shielding assembly, the inner wall of the body between the feeding bin and the pushing bin is fixedly connected to a connecting pipe, the inner wall piston of the pushing bin is connected to a push rod, and the right end of the pushing bin is fixedly connected to a cylinder.

[0007] As a further description of the above technical solution:

[0008] A heating bin is provided on the inner wall of the machine body outside the feeding bin, and a heating pipe is provided inside the heating bin.

[0009] As a further description of the above technical solution:

[0010] The shielding assembly includes an installation port, an inner wall of the installation port is slidably provided with a stopper, an inner wall of the stopper is provided with a sliding groove, an inner wall of the sliding groove is slidably connected with a clamping block, an outer wall of the clamping block is elastically connected to the inner wall of the sliding groove by a spring, an outer wall of the clamping block is fixedly connected to a control rod, and an inner wall of the body is provided with a clamping groove.

[0011] As a further description of the above technical solution:

[0012] An anti-blocking component is provided inside the threaded rod, and the anti-blocking component includes a movable groove. The movable groove is opened on the inner wall of the threaded rod and the middle of the feed hopper at the same horizontal position. The inner wall of the movable groove is slidably connected with a shift block, and the outer wall of the shift block is elastically connected to the inner wall of the movable groove by spring 2.

[0013] As a further description of the above technical solution:

[0014] The installation opening is opened at the left end of the feeding bin, and the diameter of the installation opening is larger than the diameter of the feeding bin.

[0015] As a further description of the above technical solution:

[0016] The feed hopper is in the shape of a hollow cylinder on the top and a hollow truncated cone on the bottom, and the upper surface area of ​​the truncated cone portion of the feed hopper is larger than the lower surface area.

[0017] As a further description of the above technical solution:

[0018] The edge shape of the shift block is set to be spherical, and the outer wall shape of the shift block is matched with the inner wall shape of the movable groove.

[0019] As a further description of the above technical solution:

[0020] The cross-section of the card block is in the shape of a right-angled trapezoid, and the number of the card blocks is set to two, and the right ends of the two card blocks that are away from each other are set to be inclined surfaces.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by setting the turntable, jack, threaded rod, connecting plate, insert block, mounting port, stop block, clamping block, spring and clamping slot, it is ensured that before injection molding, the staff can replace the threaded rod according to the requirements of the desired finished product, so that the threaded rod in the equipment can meet the requirements of the finished product of this injection molding, thereby achieving the effect of cost saving.

[0023] 2. In the utility model, by setting the movable groove, the shift block, the second spring, the feed hopper, the threaded rod, the motor, the turntable, the jack, the connecting plate and the plug block, it is ensured that during the unloading process, when the shift block is rotated to the upper side, it can move upward under the elastic force of the spring, thereby shifting the ultra-high molecular weight polyethylene particles at the bottom of the feed hopper, thereby preventing the bottom particles from blocking the bottom of the feed hopper and ensuring smooth unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the present invention;

[0027] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the three-dimensional structure of part A;

[0028] Figure 5 It is a schematic cross-sectional view of the upper left corner of the three-dimensional structure of the overall structure of the present invention.

[0029] Legend:

[0030] 1. Machine body; 2. Feed bin; 3. Push bin; 4. Feed hopper; 5. Motor; 6. Heating bin; 7. Heating tube; 8. Mounting mechanism; 9. Connecting tube; 10. Push rod; 11. Cylinder; 12. Anti-blocking assembly; 81. Turntable; 82. Socket; 83. Threaded rod; 84. Connecting disk; 85. Insert block; 86. Shielding assembly; 861. Mounting port; 862. Stop block; 863. Sliding slot; 864. Block; 865. Control lever; 866. Spring 1; 867. Slot; 121. Movable slot; 122. Dial block; 123. Spring 2. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an ultra-high molecular weight polyethylene screw injection molding machine, including a body 1, the body 1 is an ultra-high molecular weight polyethylene screw injection molding machine, the left end of which is provided with an injection mold connected thereto for use with it, the inner wall of the body 1 is provided with a feeding bin 2, the inner wall of the body 1 above the feeding bin 2 is provided with holes for discharging bubbles generated when ultra-high molecular weight polyethylene particles are turned into a molten state, the inner wall of the body 1 below the feeding bin 2 is provided with a pushing bin 3, the feeding bin 2 is used to transport granular ultra-high molecular weight polyethylene to the pushing bin 3, and heat it from granular to molten state, and push it. The silo 3 is used to push the molten ultra-high molecular weight polyethylene into the docking injection mold. The top of the body 1 is fixedly connected to the feed hopper 4. The shape of the feed hopper 4 is a hollow cylinder above and a hollow truncated cone below, and the upper surface area of ​​the truncated cone part of the feed hopper 4 is larger than the lower surface area. The outer wall of the body 1 is fixedly connected to the motor 5, and the output shaft of the motor 5 passes through the inner wall of the body 1. The inner wall of the body 1 outside the feed silo 2 is provided with a heating bin 6, and a heating pipe 7 is provided inside the heating bin 6. The setting of the heating pipe 7 ensures that the ultra-high molecular weight polyethylene particles can become molten after being heated.

[0033] Reference Figure 2 、 Figure 3 and Figure 5 A mounting mechanism 8 is provided inside the feed bin 2, and the mounting mechanism 8 includes a turntable 81, which is fixedly connected to the output shaft of the motor 5. The turntable 81 is in the shape of a cylinder, and a socket 82 is provided at the left end of the turntable 81. A threaded rod 83 is provided inside the feed bin 2, and the outer wall of the threaded rod 83 contacts the inner wall of the feed bin 2. The right end of the threaded rod 83 is fixedly connected to a connecting disk 84, and the right end of the connecting disk 84 is fixedly connected to an insert block 85, and the shape and size of the insert block 85 are both consistent with the socket 82.

[0034] Reference Figure 2 - Figure 4, a shielding assembly 86 is provided at the left end of the feeding bin 2, and the shielding assembly 86 includes a mounting port 861, the mounting port 861 is opened at the left end of the feeding bin 2, and the diameter of the mounting port 861 is larger than the diameter of the feeding bin 2. By comparing the diameters of the mounting port 861 with the feeding bin 2, it is ensured that the stopper 862 can enter the mounting port 861 and can ensure the rightmost position of the movement. The inner wall of the mounting port 861 is slid with a stopper 862, and the inner wall of the stopper 862 is provided with a sliding groove 863. The inner wall of the sliding groove 863 slides The movable connection is provided with a clamping block 864, the cross-sectional shape of which is a right-angled trapezoid, and the number of the clamping blocks 864 is set to two, and the right ends of the two clamping blocks 864 that are away from each other are set to an inclined surface, and the outer wall of the clamping block 864 is elastically connected to the inner wall of the sliding groove 863 by a spring 866, one end of the spring 866 is fixedly connected to the outer wall of the clamping block 864, and the other end of the spring 866 is fixedly connected to the inner wall of the sliding groove 863, the outer wall of the clamping block 864 is fixedly connected to the control rod 865, and the inner wall of the body 1 is provided with a clamping slot 867.

[0035] Reference Figure 1 and Figure 2 The inner wall of the body 1 between the feeding bin 2 and the pushing bin 3 is fixedly connected with a connecting pipe 9, and the connecting pipe 9 is vertical. The inner wall piston of the pushing bin 3 is connected with a push rod 10, and the outer wall of the push rod 10 is in contact with the inner wall of the pushing bin 3. The right end of the pushing bin 3 is fixedly connected with a cylinder 11, and the output end of the cylinder 11 is at the same horizontal position as the center line of the push rod 10, but the output shaft of the cylinder 11 has no connection with the push rod 10.

[0036] Reference Figure 2 - Figure 4 The interior of the threaded rod 83 is provided with an anti-blocking component 12, and the anti-blocking component 12 includes a movable groove 121. The movable groove 121 is opened on the inner wall of the threaded rod 83 and the middle of the hopper 4 at the same horizontal position. By setting the same horizontal position, it is ensured that the anti-blocking component 12 can make the ultra-high molecular weight polyethylene particles stuck in the hopper 4 fall out, and the inner wall of the movable groove 121 is slidably connected with a shift block 122. The edge shape of the shift block 122 is set to be spherical. Through the spherical setting, it is ensured that when the edge of the shift block 122 is subjected to force, the shift block 122 can re-enter the movable groove 121 under the action of the spherical surface. The outer wall of the shift block 122 and the inner wall of the movable groove 121 are elastically connected by a second spring 123. One end of the second spring 123 is fixedly connected to the outer wall of the shift block 122, and the other end of the second spring 123 is fixedly connected to the inner wall of the movable groove 121.

[0037] Working principle: When in use, the staff first places the threaded rod 83 of the required model with the connecting plate 84 on one side facing right according to the finished product to be manufactured. After it is completely placed, use the insertion rod that matches the shape of the opening on the left side of the threaded rod 83 to insert it into its interior, and rotate the insertion rod to drive the threaded rod 83 to rotate, and apply a force to move to the right during the rotation. When the threaded rod 83 is rotated so that the plug block 85 is in a fitting position with the socket 82, the threaded rod 83 drives the connecting plate 84 to move to the right, and the plug block 85 enters the interior of the socket 82.

[0038] When the threaded rod 83 is installed, the staff puts the block 862 into the installation port 861. During the placement process, the inclined surface of the block 864 is subjected to force, so it enters the sliding groove 863 under the action of the force. When the block 862 completely enters the installation port 861, the block 864 just enters the slot 867, thereby ensuring that the horizontal position of the block 862 cannot be changed during use.

[0039] Because the horizontal position of the stopper 862 can not change, and the threaded rod 83 is between the stopper 862 and the connecting plate 84, so the left and right directions of the threaded rod 83 are all provided with obstacles, so the threaded rod 83 can't move in the horizontal direction.

[0040] When the threaded rod 83 needs to be replaced, the staff first moves the two control rods 865 toward each other, so that the control rods 865 drive the block 864 to move toward each other, so that the block 864 leaves the slot 867. At this time, the staff pulls the control rod 865 outward to make the block 862 leave the installation port 861.

[0041] After the threaded rod 83 is installed, the staff adds granular ultra-high molecular weight polyethylene particles into the feed hopper 4, so that the granular ultra-high molecular weight polyethylene particles enter the feed bin 2 through the bottom opening of the feed hopper 4 under the action of gravity.

[0042] At this time, the output shaft of the motor 5 drives the turntable 81 to rotate. Since the insert block 85 is inside the socket 82, when the turntable 81 rotates, the turntable 81 drives the connecting disk 84 to rotate, so the threaded rod 83 rotates, thereby driving the ultra-high molecular weight polyethylene particles to move to the left.

[0043] When the ultra-high molecular weight polyethylene particles move to the area where the heating tube 7 is located, the ultra-high molecular weight polyethylene particles are heated and become molten. Under the continuous transportation of the threaded rod 83, they enter the pushing bin 3 through the connecting pipe 9 and are located on the left side of the push rod 10. When a large amount of molten ultra-high molecular weight polyethylene enters, the push rod 10 is pushed to the right. When the molten ultra-high molecular weight polyethylene completely enters the pushing bin 3, the cylinder 11 is started, and the output shaft of the cylinder 11 pushes the push rod 10, so that the molten ultra-high molecular weight polyethylene is pushed out from the small hole at the left end of the pushing bin 3 and enters the injection mold connected to it.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An ultra-high molecular weight polyethylene screw injection molding machine, comprising a machine body (1), characterized in that: The inner wall of the machine body (1) is provided with a feeding bin (2), the inner wall of the machine body (1) below the feeding bin (2) is provided with a pushing bin (3), the top of the machine body (1) is fixedly connected to a feeding hopper (4), the outer wall of the machine body (1) is fixedly connected to a motor (5), the output shaft of the motor (5) passes through the inner wall of the machine body (1), and a mounting mechanism (8) is provided inside the feeding bin (2), the mounting mechanism (8) includes a turntable (81), the turntable (81) is fixedly connected to the output shaft of the motor (5), and the left end of the turntable (81) is fixedly connected to the output shaft of the motor (5). A socket (82) is provided, a threaded rod (83) is provided inside the feeding bin (2), the right end of the threaded rod (83) is fixedly connected to a connecting disk (84), the right end of the connecting disk (84) is fixedly connected to an insert block (85), a shielding assembly (86) is provided at the left end of the feeding bin (2), the inner wall of the body (1) between the feeding bin (2) and the pushing bin (3) is fixedly connected to a connecting pipe (9), the inner wall piston of the pushing bin (3) is connected to a push rod (10), and the right end of the pushing bin (3) is fixedly connected to a cylinder (11).

2. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 1, characterized in that: A heating chamber (6) is provided on the inner wall of the machine body (1) outside the feeding chamber (2), and a heating pipe (7) is provided inside the heating chamber (6).

3. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 1, characterized in that: The shielding assembly (86) includes an installation opening (861), a stopper (862) is slidably provided on the inner wall of the installation opening (861), a sliding groove (863) is provided on the inner wall of the stopper (862), a clamping block (864) is slidably connected to the inner wall of the sliding groove (863), an outer wall of the clamping block (864) is elastically connected to the inner wall of the sliding groove (863) via a spring (866), a control rod (865) is fixedly connected to the outer wall of the clamping block (864), and a clamping groove (867) is provided on the inner wall of the body (1).

4. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 1, characterized in that: An anti-blocking assembly (12) is provided inside the threaded rod (83), and the anti-blocking assembly (12) includes a movable groove (121). The movable groove (121) is provided on the inner wall of the threaded rod (83) and the middle of the feed hopper (4) at the same horizontal position. The inner wall of the movable groove (121) is slidably connected to a shift block (122), and the outer wall of the shift block (122) is elastically connected to the inner wall of the movable groove (121) via a second spring (123).

5. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 3, characterized in that: The installation opening (861) is opened at the left end of the feeding bin (2), and the diameter of the installation opening (861) is larger than the diameter of the feeding bin (2).

6. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 1, characterized in that: The feed hopper (4) is in the shape of a hollow cylinder connected to a hollow truncated cone at the bottom, and the upper surface area of ​​the truncated cone portion of the feed hopper (4) is larger than the lower surface area.

7. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 4, characterized in that: The edge shape of the shift block (122) is set to be spherical, and the outer wall shape of the shift block (122) is matched with the inner wall shape of the movable groove (121).

8. The ultra-high molecular weight polyethylene screw injection molding machine according to claim 3, characterized in that: The cross-sectional shape of the clamping block (864) is a right-angled trapezoid, and the number of the clamping blocks (864) is set to two, and the right ends of the two clamping blocks (864) that are away from each other are set to be inclined surfaces.

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