Injection molding machine

Abstract

The utility model discloses an injection molding machine, which relates to the technical field of injection molding processing devices, and comprises a base, an injection molding structure, an upper mold, a lower mold, a mounting frame fixedly arranged at the upper end of the base, hydraulic rods I arranged in two ends of the mounting frame, a charging barrel positioned between the hydraulic rods I, an injection molding pipe positioned at the lower end of the charging barrel, and an injection molding nozzle positioned at the lower end of the injection molding pipe, an injection molding opening is formed in the upper end of the upper mold; the adjusting structure comprises a motor, a rotating disc located at the upper end of the motor and a second hydraulic rod fixedly arranged at the upper end of the base, an extrusion block is arranged at the upper end of the second hydraulic rod, a top block is arranged on the outer wall of the upper mold, bottom blocks are arranged on the outer wall of the lower mold, and first springs fixedly arranged between the top block and the bottom blocks are arranged; the closing structure comprises an extrusion cone and valve blocks distributed at the upper end of the injection molding opening; according to the injection mold, the injection molding structure and the adjusting structure are utilized, so that the problem that a large amount of injection molding time is occupied during waiting for cooling of liquid materials in the injection mold and manual discharging is solved, and efficient machining of injection molding parts is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding devices, in particular to an injection molding machine. Background Art

[0002] An injection molding machine is a device used to manufacture plastic products. Solid plastic particles are fed into the hopper of the injection molding machine. In the hopper, the plastic is heated and melted into molten plastic. The molten plastic is pushed into the cavity of the mold, filling the space inside the cavity. The molten plastic injected into the cavity begins to cool and solidify, forming an injection molded part. The mold in the injection molding machine generally includes a movable mold and a fixed mold. The next injection molding process can only be carried out after the mold is demolded.

[0003] A Chinese patent discloses an injection molding machine (authorization announcement number CN209320127U). The patented technology includes: an injection molding machine body, a support tube, and a cylinder. The lower end of the injection molding machine body is provided with a support frame. The support tube is arranged at the lower end of the support frame. The support tube is fixedly connected to the support frame at one end near the support frame. The support tube is provided with a plurality of support tubes. The support tube supports the injection molding machine body by supporting the support frame. The side wall of the support tube is provided with a wire hole. The cylinder is arranged in the inner cavity of the support tube. The cylinder is connected to the outside world through the wire hole. The end of the piston rod in the cylinder near the extension direction is hinged to the support frame. The extension length of the piston rod in the cylinder is greater than the length of the support tube. The utility model has the effect of facilitating the cleaning of the gap between the bottom of the injection molding machine and the ground, reducing the waste of injection molding machine products, saving resources and reducing costs.

[0004] This patented technology is convenient for cleaning the bottom and the ground when used to reduce waste, but it still has some shortcomings when used. It is necessary to wait for the cooling time of the liquid material inside the injection mold. After cooling and molding, the injection mold can be opened. The injection molding process cannot be carried out during the cooling period, which wastes a lot of waiting time. In addition, the injection molded parts that are tightly adhered to the injection mold cavity need to be manually torn off, which also takes up injection time and reduces the processing efficiency of the injection molding machine. Therefore, those skilled in the art provide an injection molding machine to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the present invention is to provide an injection molding machine to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides an injection molding machine, comprising a base,

[0007] The injection molding structure includes an upper mold and a lower mold arranged in a circular array at the upper end of the base, a mounting frame fixedly mounted on the rear side of the upper end of the base, a hydraulic rod 1 being provided inside each end of the mounting frame, a barrel located between the hydraulic rods 1, an injection molding tube located at the lower end of the barrel, an injection molding nozzle located at the lower end of the injection molding tube, and an injection molding port being provided inside the upper end of the upper mold;

[0008] The adjustment structure includes a motor, a turntable located at the upper end of the motor and the lower end of the lower mold, a second hydraulic rod fixed to one side of the upper end of the base, an extrusion block provided at the upper end of the second hydraulic rod, top blocks provided on both sides of the outer wall of the upper mold, bottom blocks provided on both sides of the outer wall of the lower mold, and a spring fixed between the top block and the bottom block;

[0009] Specifically, the control valve controls the opening and closing of the injection port, and through the collar, the longitudinal force of the hydraulic rod acts on the barrel through the collar.

[0010] Furthermore, the lower end of the turntable is provided with rollers distributed in a circular array, the upper end of the base is provided with a circular guide rail, and the rollers are rotatably installed inside the guide rail;

[0011] Specifically, the rollers on the lower side of the turntable rotate inside the guide rail to obtain rotation support, thereby improving stability during rotation.

[0012] Furthermore, a force-bearing block is provided at one end of the upper mold, the top block is lower than the force-bearing block, and the top block corresponds to the force-bearing block;

[0013] Specifically, the force-bearing block effectively passes through the force-bearing block during rotation, and the lifting process of the force-bearing block passes through the force-bearing block, applying the lifting force to the upper mold.

[0014] Furthermore, a positioning rod is provided at the lower end of the top block, a positioning cylinder is provided at the upper end of the bottom block, and the lower end of the positioning rod is slidably inserted into the interior of the positioning cylinder;

[0015] Specifically, when the spring 1 is stretched or elastically retracted, it is guided by the positioning rod sliding inside the positioning cylinder, thereby preventing the spring 1 from deflecting outward.

[0016] Furthermore, the inner wall of the travel seat is provided with a conical surface corresponding to the curvature of the outer wall of the extrusion cone;

[0017] Specifically, when the conical surface is squeezed by the extrusion cone, it effectively fits with the outer wall of the extrusion cone, thereby reducing the resistance encountered by the extrusion cone during pressurization.

[0018] Furthermore, a second spring connected to the travel seat is provided at one end of the support ring, and a guide rod is provided inside the second spring, which is slidably inserted into the support ring and connected to the travel seat at one end;

[0019] Specifically, the travel seat is elastically installed with the support ring through the second spring, and the travel seat is slidably installed inside the support ring through the guide rod to obtain a sliding guide while preventing the second phase of the spring from deviating outside.

[0020] Furthermore, it also includes a closed structure, which includes an extrusion cone that is sleeved on the outer wall of the injection tube and the outside of the injection nozzle, a valve block distributed in a circular array at the upper end of the injection port, and a stroke seat is provided on the outer wall of the valve block, and a support ring is located on one side of the stroke seat.

[0021] Furthermore, the injection nozzle corresponds to the injection port, a control valve is provided inside the injection nozzle, and a ring is provided at a lower end of the hydraulic rod and is sleeved on the outer wall of the barrel.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the upper mold and the lower mold are elastically closed together by a spring, and when opened, the force block is lifted by the extrusion block to open the upper mold. Moreover, because the mold is installed on a turntable driven by a motor, after injection, there is no need to wait for the injection molded part to cool and form and then open the mold and unload the material. The injection molded part cools during the rotation of the turntable and automatically opens the mold after cooling. During this process, the injection molding structure directly performs subsequent injection molding processing. The injection molding machine does not need to wait for the problem of adhesion and the need for staff to tear the injection molded parts. The optimized processing steps improve the efficiency of the injection molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the main viewing three-dimensional structure;

[0024] Figure 2 This is a schematic diagram of the main three-dimensional structure of the upper mold and the lower mold;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the closed structure viewed from above;

[0026] Figure 4 This is a schematic diagram of the main cross-sectional three-dimensional structure of the injection molded tube;

[0027] Figure 5 It is a schematic diagram of the partial main cross-sectional three-dimensional structure of the upper mold.

[0028] In the picture:

[0029] 100, base;

[0030] 200, injection molding structure; 201, barrel; 202, upper mold; 203, lower mold; 204, mounting frame; 205, hydraulic rod 1; 206, collar; 207, injection molding tube; 208, injection molding nozzle; 209, control valve; 210, injection port;

[0031] 300, adjustment structure; 301, turntable; 302, roller; 303, guide rail; 304, hydraulic rod 2; 305, extrusion block; 306, motor; 307, force block; 308, positioning rod; 309, positioning cylinder; 310, bottom block; 311, spring 1; 312, top block;

[0032] 400, closed structure; 401, extrusion cone; 402, support ring; 403, spring 2; 404, guide rod; 405, travel seat; 406, cone surface; 407, valve block. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figure 1-5 , the utility model provides a technical solution:

[0035] See Figure 1 、 Figure 2 、 Figure 5 As shown,

[0036] An injection molding machine, an injection molding structure 200, including an upper mold 202 and a lower mold 203 arranged in a circular array at the upper end of a base 100, a mounting frame 204 fixed to the rear side of the upper end of the base 100, hydraulic rods 205 disposed inside each end of the mounting frame 204, a barrel 201 located between the hydraulic rods 205, an injection tube 207 located at the lower end of the barrel 201, an injection nozzle 208 located at the lower end of the injection tube 207, and an injection port 210 formed inside the upper end of the upper mold 202;

[0037] The injection nozzle 208 corresponds to the injection port 210. A control valve 209 is provided inside the injection nozzle 208. The lower end of the hydraulic rod 205 is provided with a collar 206 which is sleeved on the outer wall of the barrel 201.

[0038] The adjustment structure 300 includes a motor 306, a turntable 301 located above the motor 306 and below the lower mold 203, a second hydraulic rod 304 fixed to one side of the upper end of the base 100, an extrusion block 305 provided at the upper end of the second hydraulic rod 304, top blocks 312 provided on both sides of the outer wall of the upper mold 202, bottom blocks 310 provided on both sides of the outer wall of the lower mold 203, and a first spring 311 fixed between the top block 312 and the bottom block 310;

[0039] The lower end of the turntable 301 is provided with rollers 302 distributed in a circular array, and the upper end of the base 100 is provided with a circular guide rail 303, and the rollers 302 are rotatably installed inside the guide rail 303;

[0040] A force-bearing block 307 is provided at one end of the upper mold 202, and a top block 312 is lower in level than the force-bearing block 307, and the top block 312 corresponds to the force-bearing block 307;

[0041] A positioning rod 308 is provided at the lower end of the top block 312, and a positioning cylinder 309 is provided at the upper end of the bottom block 310. The lower end of the positioning rod 308 is slidably inserted into the interior of the positioning cylinder 309.

[0042] In this embodiment, the fixed mold and the movable mold in the injection mold are adjusted to fit the upper mold 202 and the lower mold 203, and are distributed on the base 100 in a plurality of annular arrays. The liquid injection port is located inside one group of injection molds, and the new injection mold is directly adjusted to the injection position through the turntable 301, which avoids the waiting time of the staff. During the rotation of the turntable 301, the liquid in the injection mold will gradually cool and form.

[0043] When the hydraulic rod 205 drives the extrusion block 305 and the corresponding force block 307 to apply a lifting force, the upper mold 202 is opened, and the injection mold with internal cooling and molding can be taken out. During the material removal process, the injection molding structure 200 is still in operation, avoiding the problem that the injection molding machine cannot be used during the injection mold unloading process. The unloading and injection molding processes are operated synchronously. After the material is removed, the upper mold 202 and the lower mold 203 of the injection mold are elastically reset and fitted by the spring 311. The upper mold 202 and the lower mold 203 of the injection mold form a closed mold cavity again, which is convenient for reuse.

[0044] The entire production process is more continuous, thereby reducing the pause time between production operations, improving operational flexibility, and solving the problem of unusability caused by the traditional mold cooling and unloading process. After taking the material, the upper mold 202 and the lower mold 203 of the injection mold are reset and fitted by spring 1 311, eliminating the need for manual adjustment of the upper and lower molds 203 and saving labor costs.

[0045] See Figure 1-Figure 5 ,

[0046] as well as;

[0047] The closed structure 400 includes an extrusion cone 401 that is sleeved on the outer wall of the injection tube 207 and the outside of the injection nozzle 208, a valve block 407 distributed in a circular array at the upper end of the injection port 210, and a stroke seat 405 is provided on the outer wall of the valve block 407, and a support ring 402 is located on one side of the stroke seat 405.

[0048] The inner wall of the travel seat 405 is provided with a conical surface 406 corresponding to the curvature of the outer wall of the extrusion cone 401;

[0049] A second spring 403 connected to a travel seat 405 is provided at one end of the support ring 402. A guide rod 404 is provided inside the second spring 403 and is slidably inserted into the support ring 402 and connected to the travel seat 405 at one end.

[0050] After the injection nozzle 208 moves out of the injection port 210 and ends squeezing the stroke seat 405, the stroke seat 405 is automatically reset by the elastic support of the spring 2 403, closing the injection port 210, ensuring that the injection port 210 can be quickly and reliably closed after each injection of liquid. Due to the structural design of the stroke seat 405 and the process of the extrusion cone 401 applying force, the possibility of external foreign matter entering the injection port 210 is better avoided during the process of the injection nozzle 208 conveying liquid to the inside of the injection mold, thereby improving the hygiene standards and product quality of the production process, and reducing damage or quality problems caused by foreign matter contamination, which helps to ensure the stability and consistency of the production process.

[0051] Working principle: Hydraulic rod 1 205 drives collar 206 to descend, driving barrel 201 and injection tube 207 to descend, and extrusion cone 401 on the outer wall of injection tube 207 squeezes the inner wall of stroke seat 405, and stroke seat 405 is guided and slid by guide rod 404 under force. In this process, spring 2 403 is pressurized, spring 2 403 is forced to contract, and valve block 407 opens following stroke seat 405. At this time, injection port 210 is open, and injection nozzle 208 is effectively inserted. After control valve 209 is opened, injection tube 207 conveys liquid material inside barrel 201 through injection nozzle 208 into the closed mold cavity inside upper mold 202 and lower mold 203. The mold cavity model is set according to needs. After the liquid material is injected, hydraulic rod 1 205 drives barrel 201 to rise. After the extrusion cone 401 is lifted, stroke seat 405 gradually loses extrusion force, and the elastic support of spring 2 403 pushes valve block 407 to close injection port 210.

[0052] The motor 306 drives the rotating disk to rotate, and the new injection mold is located below the injection structure 200. The above operation is repeated. When the turntable 301 drives the injection mold to rotate to the hydraulic rod 2 304, the hydraulic rod 2 304 drives the extrusion block 305 to lift the force block 307. During this process, the spring 1 311 is pulled by force, and the positioning rod 308 slides longitudinally inside the positioning cylinder 309. The upper mold 202 is opened, and the cooled and formed mold is taken out. When the hydraulic rod 2 304 drives the extrusion block 305 to reset, the force block 307 gradually stops being stressed, and the spring 1 311 itself elastically pulls, driving the upper mold 202 to descend and fit with the lower mold 203 to form a closed injection mold.

Claims

1. An injection molding machine, characterized in that: including a base (100), The injection molding structure (200) comprises an upper mold (202) and a lower mold (203) arranged in a circular array at the upper end of the base (100), a mounting frame (204) fixedly mounted on the rear side of the upper end of the base (100), hydraulic rods (205) disposed inside both ends of the mounting frame (204), a barrel (201) located between the hydraulic rods (205), an injection molding tube (207) located at the lower end of the barrel (201), an injection molding nozzle (208) located at the lower end of the injection molding tube (207), and an injection molding port (210) disposed inside the upper end of the upper mold (202); The adjusting structure (300) comprises a motor (306), a turntable (301) located at the upper end of the motor (306) and the lower end of the lower mold (203), a second hydraulic rod (304) fixedly mounted on one side of the upper end of the base (100), an extrusion block (305) being provided at the upper end of the second hydraulic rod (304), top blocks (312) being provided on both sides of the outer walls of the upper mold (202), bottom blocks (310) being provided on both sides of the outer walls of the lower mold (203), and a first spring (311) being fixedly mounted between the top block (312) and the bottom block (310).

2. An injection molding machine according to claim 1, characterized in that: The injection nozzle (208) corresponds to the injection port (210), a control valve (209) is provided inside the injection nozzle (208), and a collar (206) is provided at the lower end of the hydraulic rod (205) and is sleeved on the outer wall of the barrel (201).

3. An injection molding machine according to claim 2, characterized in that: The lower end of the turntable (301) is provided with rollers (302) distributed in a ring array, the upper end of the base (100) is provided with a ring-shaped guide rail (303), and the rollers (302) are rollingly installed inside the guide rail (303).

4. An injection molding machine according to claim 3, characterized in that: A force-bearing block (307) is provided at one end of the upper mold (202), and the top block (312) is lower in level than the force-bearing block (307), and the top block (312) corresponds to the force-bearing block (307).

5. An injection molding machine according to claim 4, characterized in that: A positioning rod (308) is provided at the lower end of the top block (312), a positioning cylinder (309) is provided at the upper end of the bottom block (310), and the lower end of the positioning rod (308) is slidably inserted into the interior of the positioning cylinder (309).

6. The injection molding machine according to claim 1, wherein: The invention also includes a closed structure (400), wherein the closed structure (400) includes an extrusion cone (401) sleeved on the outer wall of the injection tube (207) and the outer side of the injection nozzle (208), a valve block (407) distributed in a ring array at the upper end of the injection port (210), the outer wall of the valve block (407) is provided with a stroke seat (405), and a support ring (402) is located on one side of the stroke seat (405), and the inner wall of the stroke seat (405) is provided with a conical surface (406) corresponding to the curvature of the outer wall of the extrusion cone (401).

7. An injection molding machine according to claim 6, characterized in that: A second spring (403) connected to the travel seat (405) is provided at one end of the support ring (402), and a guide rod (404) is provided inside the second spring (403), which is slidably inserted into the support ring (402) and has one end connected to the travel seat (405).

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