Injection mechanism of single-cylinder injection molding machine

Abstract

The utility model discloses an injection mechanism of a single-cylinder injection molding machine, which relates to the field of injection molding machines and comprises an injection oil cylinder, the side wall of the injection oil cylinder is connected with an injection cylinder, the side wall of the injection cylinder is connected with an injection pipe, the top of the injection cylinder is connected with a feed pipe, the top of the feed pipe is connected with a feed hopper, and the top of the injection cylinder is connected with a motor. The output end of the motor is connected with a cam, a protruding rod is arranged on the outer side of the cam, the top of the protruding rod is connected with a connecting rod, the side wall of the connecting rod is connected with a dredging rod, and the dredging rod penetrates through the bottom of the feeding hopper and extends into the feeding pipe. The motor is used for driving the cam to rotate, the cam pushes the convex rod, the convex rod pulls the connecting rod, the connecting rod pulls the dredging rod, the dredging rod pulls the extrusion plate, the extrusion plate pulls the spring, so that the spring deforms, the dredging rod is used for dredging injection molding raw materials blocked in the feeding pipe, and the blocked feeding pipe can be quickly dredged; therefore, continuous feeding can be carried out.

Description

Technical Field

[0001] The utility model relates to the field of injection molding machines, in particular to an injection mechanism of a single-cylinder injection molding machine. Background Art

[0002] The working principle of an injection molding machine is similar to that of a syringe. Using the thrust of a screw, it injects molten plastic into a closed mold cavity, where it solidifies and sets into shape, resulting in a finished product. Injection molding is a cyclical process, with each cycle consisting of: feeding—melting and plasticizing—pressure injection—mold filling and cooling—mold opening and part removal. After the part is removed, the mold is closed again, and the next cycle begins.

[0003] At present, when an injection molding machine is used, an injection mechanism is used to transport and inject the injection liquid. When the injection molding raw material is added to the injection tube through the feed hopper for heating and melting, in order to facilitate continuous feeding, more injection molding raw material is added to the feed hopper at one time. However, more injection molding raw material can easily cause the discharge port of the feed hopper to be blocked, and it needs to be manually unblocked, which is relatively inconvenient.

[0004] Therefore, it is necessary to invent an injection mechanism of a single-cylinder injection molding machine to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide an injection mechanism of a single-cylinder injection molding machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mechanism of a single-cylinder injection molding machine, comprising an injection cylinder, the side wall of the injection cylinder is connected to an injection barrel, the side wall of the injection barrel is connected to an injection tube, the top of the injection barrel is connected to a feed pipe, the top of the feed pipe is connected to a feed hopper, the top of the injection barrel is connected to a motor, the output end of the motor is connected to a cam, a convex rod is provided on the outer side of the cam, the top of the convex rod is connected to a connecting rod, the side wall of the connecting rod is connected to a clearing rod, the clearing rod passes through the bottom of the feed hopper and extends into the feed pipe, the outer wall of the clearing rod is connected to an extrusion plate, the bottom of the extrusion plate is connected to a spring, and the other end of the spring is connected to the top of the injection cylinder.

[0007] Preferably, the top of the injection cylinder is connected to a purification box, the right side of the purification box is connected to a fan, the left side of the purification box is connected to an air supply pipe, the other end of the air supply pipe is connected to an exhaust hopper, and the side wall of the feed pipe is provided with a plurality of exhaust holes corresponding to the exhaust hopper, and a filter screen and an activated carbon adsorption screen are provided in the purification box.

[0008] Preferably, the front sides of the filter net and the activated carbon adsorption net are connected to sealing plates, the front side of the purification box is provided with a take-in and put-out port corresponding to the sealing plate, the left and right sides of the sealing plate are connected to mounting plates, the front sides of the purification box and the mounting plate are provided with corresponding threaded holes, and bolts are threadedly connected in the threaded holes.

[0009] Preferably, the front sides of the two sealing plates are connected with groove handles.

[0010] Preferably, a sealing gasket is provided on the outer side of the sealing plate, and the specific material of the sealing gasket is rubber.

[0011] The technical effects and advantages of this utility model are:

[0012] By using a motor to drive the cam to rotate, the cam pushes the convex rod, the convex rod pulls the connecting rod, the connecting rod pulls the dredging rod, the dredging rod pulls the extrusion plate, the extrusion plate pulls the spring, causing the spring to deform, and the dredging rod is used to dredge the injection molding raw materials blocked in the feed pipe. The blocked feed pipe can be dredged quickly, so that feeding can be carried out continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure;

[0015] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0016] Figure 4 For this utility model Figure 1 Schematic diagram of the enlarged structure of part B.

[0017] In the figure: 1. Injection cylinder; 2. Injection barrel; 3. Injection tube; 4. Feed pipe; 5. Feed hopper; 6. Motor; 7. Cam; 8. Protruding rod; 9. Connecting rod; 10. Clearing rod; 11. Extrusion plate; 12. Spring; 13. Purification box; 14. Fan; 15. Air pipe; 16. Exhaust hopper; 17. Filter screen; 18. Activated carbon adsorption screen; 19. Sealing plate; 20. Mounting plate; 21. Bolt; 22. Grooved handle. DETAILED DESCRIPTION

[0018] 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.

[0019] The utility model provides Figure 1-4 The injection mechanism of a single-cylinder injection molding machine shown in the figure includes an injection cylinder 1, the side wall of the injection cylinder 1 is connected to an injection barrel 2, the side wall of the injection barrel 2 is connected to an injection tube 3, the top of the injection barrel 2 is connected to a feed pipe 4, the top of the feed pipe 4 is connected to a feed hopper 5, the top of the injection barrel 2 is connected to a motor 6, the output end of the motor 6 is connected to a cam 7, a convex rod 8 is provided on the outside of the cam 7, the top of the convex rod 8 is connected to a connecting rod 9, and the side wall of the connecting rod 9 is connected to a dredging rod 10, which passes through the bottom of the feed hopper 5 and extends into the feed pipe 4 to dredge the material. The outer wall of the rod 10 is connected to the extrusion plate 11, and the bottom of the extrusion plate 11 is connected to the spring 12. The other end of the spring 12 is connected to the top of the injection cylinder 2. By using the motor 6 to drive the cam 7 to rotate, the cam 7 pushes the protruding rod 8, the protruding rod 8 pulls the connecting rod 9, the connecting rod 9 pulls the dredging rod 10, the dredging rod 10 pulls the extrusion plate 11, and the extrusion plate 11 pulls the spring 12, causing the spring 12 to deform. The dredging rod 10 is used to dredge the injection molding raw material blocked in the feed pipe 4, and the blocked feed pipe 4 can be quickly dredged, so that feeding can be carried out continuously.

[0020] A purification box 13 is connected to the top of the injection cylinder 1, a fan 14 is connected to the right side of the purification box 13, an air supply pipe 15 is connected to the left side of the purification box 13, and the other end of the air supply pipe 15 is connected to an exhaust hopper 16. The side wall of the feed pipe 4 is provided with a plurality of exhaust holes corresponding to the exhaust hopper 16. A filter screen 17 and an activated carbon adsorption net 18 are provided in the purification box 13. By using the fan 14 to exhaust, the exhaust gas generated during heating is drawn into the exhaust hopper 16, and then enters the air supply pipe 15 through the exhaust hopper 16, and then enters the purification box 13 through the air supply pipe 15, and the exhaust gas is purified by the filter screen 17 and the activated carbon adsorption net 18 in the purification box 13.

[0021] The front sides of the filter screen 17 and the activated carbon adsorption screen 18 are both connected to a sealing plate 19, and the front side of the purification box 13 is provided with a take-in and put-out opening corresponding to the sealing plate 19. The left and right sides of the sealing plate 19 are connected to a mounting plate 20. The front sides of the purification box 13 and the mounting plate 20 are both provided with corresponding threaded holes, and the threaded holes are threaded with bolts 21. By rotating the bolts 21, removing the bolts 21, pulling the sealing plate 19, and the sealing plate 19 pulling the filter screen 17 and the activated carbon adsorption screen 18, the filter screen 17 and the activated carbon adsorption screen 18 can be taken out of the purification box 13 for cleaning or replacement.

[0022] The front sides of the two sealing plates 19 are connected to groove handles 22, which can facilitate pulling the two sealing plates 19.

[0023] A sealing gasket is provided on the outer side of the sealing plate 19 , and the specific material of the sealing gasket is rubber, which can conveniently increase the sealing performance of the sealing plate 19 .

[0024] Working principle of this utility model:

[0025] By using the motor 6 to drive the cam 7 to rotate, the cam 7 pushes the protruding rod 8, the protruding rod 8 pulls the connecting rod 9, the connecting rod 9 pulls the dredging rod 10, the dredging rod 10 pulls the extrusion plate 11, and the extrusion plate 11 pulls the spring 12, causing the spring 12 to deform, and the dredging rod 10 is used to dredge the injection molding material blocked in the feed pipe 4, and the fan 14 is used to exhaust air, and the exhaust gas generated during heating is sucked into the exhaust hopper 16, and then enters the air supply pipe 15 through the exhaust hopper 16, and enters the purification box 13 through the air supply pipe 15, and the exhaust gas is purified by the filter screen 17 and the activated carbon adsorption net 18 in the purification box 13. By rotating the bolt 21, the bolt 21 is removed, and the sealing plate 19 is pulled. The sealing plate 19 pulls the filter screen 17 and the activated carbon adsorption net 18, and the filter screen 17 and the activated carbon adsorption net 18 can be taken out of the purification box 13 for cleaning or replacement.

[0026] 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 injection mechanism of a single-cylinder injection molding machine, comprising an injection cylinder, a syringe connected to the side wall of the injection cylinder, an injection tube connected to the side wall of the syringe, a feed tube connected to the top of the syringe, and a feed hopper connected to the top of the feed tube, characterized in that: The top of the injection cylinder is connected to a motor, the output end of the motor is connected to a cam, a cam is provided on the outside of the cam, the top of the cam is connected to a connecting rod, the side wall of the connecting rod is connected to a dredging rod, the dredging rod passes through the bottom of the feed hopper and extends into the feed pipe, the outer wall of the dredging rod is connected to an extrusion plate, the bottom of the extrusion plate is connected to a spring, and the other end of the spring is connected to the top of the injection cylinder.

2. The injection mechanism of a single-cylinder injection molding machine according to claim 1, characterized in that: The top of the injection cylinder is connected to a purification box, the right side of the purification box is connected to a fan, the left side of the purification box is connected to an air supply pipe, the other end of the air supply pipe is connected to an exhaust hopper, and the side wall of the feed pipe is provided with multiple exhaust holes corresponding to the exhaust hopper, and a filter screen and an activated carbon adsorption screen are provided in the purification box.

3. The injection mechanism of a single-cylinder injection molding machine according to claim 2, characterized in that: The front sides of the filter net and the activated carbon adsorption net are both connected to sealing plates, the front side of the purification box is provided with a take-in and put-out opening corresponding to the sealing plate, the left and right sides of the sealing plate are both connected to mounting plates, the front sides of the purification box and the mounting plate are both provided with corresponding threaded holes, and bolts are threadedly connected in the threaded holes.

4. The injection mechanism of a single-cylinder injection molding machine according to claim 3, characterized in that: The front sides of the two sealing plates are connected with groove handles.

5. The injection mechanism of a single-cylinder injection molding machine according to claim 4, characterized in that: A sealing gasket is provided on the outer side of the sealing plate, and the specific material of the sealing gasket is rubber.

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