Valve rod injection molding machine

Abstract

The utility model provides a valve rod injection molding machine, belongs to the technical field of valve rod manufacturing, and solves the technical problem that an existing mold cannot be automatically opened and sealed. A valve rod injection molding machine comprises an injection molding base, a pair of molding frames arranged on the injection molding base, a pair of extension arms vertically arranged on the injection molding base, a regulation and control assembly arranged in the injection molding base and used for controlling the extension arms to perform unfolding actions, height adjusting assemblies arranged in the extension arms, and the two extension arms are fixedly connected with the corresponding molding frames respectively. The automatic mold opening and sealing device has the advantages of automatically opening and sealing the mold and improving the forming efficiency and the demolding efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve stem manufacturing and relates to an injection molding machine, in particular to a valve stem injection molding machine. Background Art

[0002] Valves are control components in fluid delivery systems, with functions such as shutoff, regulation, flow diversion, backflow prevention, pressure stabilization, flow diversion or overflow pressure relief, and are widely used in industries such as petroleum, chemical, papermaking, and steel. As the main transmission part of the valve, the valve stem is connected to the handle at the upper end and drives the valve ball to rotate at the lower end to achieve the opening and closing of the valve and flow control. It not only needs to have good corrosion resistance, but also high mechanical properties.

[0003] After searching, it is found that a glass fiber reinforced plastic valve stem compression molding mold is disclosed in Chinese patent documents [Application number: 202211658132.4; Publication number: CN 115972470 A]. This glass fiber reinforced plastic valve stem compression molding mold includes an upper mold and a lower mold; a plug extends from the bottom center of the upper mold; the upper mold is installed on the top of the lower mold; a molding cavity for storing raw materials is opened in the lower mold, and the plug of the upper mold extends into the upper port of the molding cavity to seal the upper port of the molding cavity; a push rod is provided at the lower part of the molding cavity, and a groove for forming the tail of the valve stem is opened at the upper port of the push rod, and the lower end of the push rod extends from the lower bottom plate. The present invention also provides a valve stem molding method. The beneficial effects of the present invention are: the mold structure of the present invention is simplified, the mold use steps are few, the valve stem produced is heated evenly, and it is not easy to generate thermal stress inside and deform; the valve stem made of glass fiber reinforced plastic can be used in strong acid and strong alkali media, and has higher strength.

[0004] Although the patent simplifies the mold structure, reduces the steps of using the mold, and produces valve stems that are evenly heated and not easily deformed by thermal stress generated inside, the mold cannot automatically open and close the mold, which affects the molding efficiency and demolding efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the existing technology and propose a valve stem injection molding machine. The technical problem to be solved by the utility model is: how to realize automatic mold opening and mold sealing to improve the molding efficiency and demoulding efficiency.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A valve stem injection molding machine comprises an injection molding base and a pair of molding frames arranged on the injection molding base, wherein a pair of extension arms are vertically arranged on the injection molding base, a regulating component for controlling the expansion action of the extension arms is arranged in the injection molding base, a height adjustment component is arranged in the extension arms, and the two extension arms are fixedly connected to the corresponding molding frames respectively.

[0008] The working principle of the utility model is that the expansion action of the extension arm can be controlled by the regulating component, so as to conveniently control the extension arm to drive the molding frame to perform the action of opening and closing the mold, thereby further improving the molding efficiency and demoulding efficiency, improving the overall operation process, saving operation time, and then raising or lowering the molding frame by the height adjustment component to realize the docking of the molding frame and the injection molding base, so as to facilitate injection molding into the molding frame through the injection molding base, and improve the overall injection molding efficiency.

[0009] Four servo motors are fixedly connected in one of the molding frames, and four threaded grooves are opened on the other molding frame. The output ends of the four servo motors are coaxially fixedly connected with threaded columns, and the four threaded columns are respectively threadedly connected to the corresponding threaded grooves. An injection port is opened on the top surface of the injection molding base, and an injection molding pipe is arranged on the injection molding base, and one end of the injection molding pipe is connected to the injection molding port.

[0010] With the above structure, the threaded column can be driven to rotate by the servo motor, thereby realizing the threaded connection with the thread groove, further completing the fixed connection between the two molding frames, facilitating the docking of the injection port, and thus carrying out the subsequent injection molding work normally.

[0011] The regulating component includes a pair of guide slots opened on the injection molding base, a sliding block slidably connected in the guide slots, a transmission gear rotatably connected in the injection molding base, a pair of driving screws coaxially fixed on the transmission gear, the two driving screws are respectively threadedly connected to the corresponding sliding blocks, and the sliding block is fixedly connected to the extension arm.

[0012] By adopting the above structure, the driving screw can be driven to rotate through the transmission gear. After the driving screw rotates, it will drive the sliding block, and the sliding block will further drive the extension arm to perform corresponding expansion or contraction actions, so as to facilitate the control of the extension arm to drive the forming frame to perform mold opening and mold sealing actions, thereby further improving the molding efficiency and demoulding efficiency, improving the overall operation process, and saving operation time.

[0013] A driving motor is fixed inside the injection molding base, and an output end of the driving motor is coaxially fixedly connected with a driving gear, and the driving gear is meshed with the transmission gear.

[0014] With the above structure, the driving motor can drive the driving gear to rotate, and the driving gear can further mesh with the transmission gear to drive the transmission gear to operate, thereby automatically completing the opening and closing of the forming frame, improving efficiency and reducing the workload of personnel.

[0015] The extension arm is divided into a driving arm located at the bottom and an unfolding arm located at the top. The height adjustment component includes a control motor fixedly connected in the driving arm and a pair of stabilizing rods fixedly connected on the driving arm. The output end of the control motor is coaxially fixedly connected with a control screw, the top of the control screw is threadedly connected to the unfolding arm, and the top of the stabilizing rod is slidably connected to the unfolding arm.

[0016] By adopting the above structure, the regulating motor can be used to drive the regulating screw to rotate, and the regulating screw is connected to the deployment arm through a thread, thereby driving the deployment arm to be lifted and deployed, and then the stabilizing rod is connected to the deployment arm through a sliding connection, thereby further stabilizing the stability of the deployment arm during the deployment process.

[0017] Compared with the existing technology, this valve stem injection molding machine has the following advantages:

[0018] 1. The expansion action of the extension arm is controlled by the regulating component, so that the extension arm can be conveniently controlled to drive the forming frame to open and close the mold, thereby further improving the molding efficiency and demoulding efficiency, improving the overall operation process, and saving operation time.

[0019] 2. The molding frame is raised or lowered by the height adjustment component to achieve the docking between the molding frame and the injection molding base, which facilitates injection molding into the molding frame through the injection molding base and improves the overall injection molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the structure inside the injection molding base in the utility model.

[0022] Figure 3 It is a schematic diagram of the structure inside the extension arm of the utility model.

[0023] Figure 4 It is a schematic diagram of the structure inside the forming frame in the utility model.

[0024] In the figure, 1. injection molding base; 2. molding frame; 3. servo motor; 4. thread groove; 5. thread column; 6. injection molding port; 7. injection molding pipe; 8. guide slide; 9. sliding block; 10. transmission gear; 11. driving screw; 12. driving motor; 13. driving gear; 14. unfolding arm; 15. driving arm; 16. regulating motor; 17. stabilizing rod; 18. regulating screw. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1-Figure 4 As shown, a valve stem injection molding machine includes an injection molding base 1, a pair of molding frames 2 arranged on the injection molding base 1, a pair of extension arms vertically arranged on the injection molding base 1, a regulating component for controlling the expansion action of the extension arms is arranged in the injection molding base 1, a height adjustment component is arranged in the extension arm, and the two extension arms are fixedly connected to the corresponding molding frames 2 respectively.

[0027] The expansion action of the extension arm can be controlled by the regulating component, so that the extension arm can be controlled to drive the molding frame 2 to open and close the mold, thereby further improving the molding efficiency and demoulding efficiency, improving the overall operation process, saving operation time, and then raising or lowering the molding frame 2 through the height adjustment component to achieve the docking of the molding frame 2 and the injection molding base 1, so as to facilitate injection molding into the molding frame 2 through the injection molding base 1, thereby improving the overall injection molding efficiency.

[0028] Four servo motors 3 are fixedly connected inside one of the molding frames 2, and four threaded grooves 4 are opened on the other molding frame 2. The output ends of the four servo motors 3 are coaxially fixedly connected with threaded columns 5, and the four threaded columns 5 are respectively threadedly connected to the corresponding threaded grooves 4. An injection port 6 is opened on the top surface of the injection molding base 1, and an injection molding pipe 7 is arranged on the injection molding base 1, and one end of the injection molding pipe 7 is connected to the injection molding port 6.

[0029] With the above structure, the threaded column 5 can be driven to rotate by the servo motor 3, thereby realizing the threaded connection with the threaded groove 4, further completing the fixed connection between the two molding frames 2, facilitating the docking of the injection port 6, so as to carry out the subsequent injection molding work normally.

[0030] The regulating component includes a pair of guide grooves 8 opened on the injection molding base 1, a sliding block 9 is slidably connected in the guide groove 8, a transmission gear 10 is rotatably connected in the injection molding base 1, a pair of driving screws 11 are coaxially fixed on the transmission gear 10, and the two driving screws 11 are respectively threadedly connected to the corresponding sliding blocks 9, and the sliding block 9 is fixedly connected to the extension arm.

[0031] By adopting the above structure, the driving screw 11 can be driven to rotate by the transmission gear 10. After the driving screw 11 rotates, it will drive the sliding block 9, and the sliding block 9 will further drive the extension arm to perform corresponding expansion or contraction actions, so as to facilitate the control of the extension arm to drive the forming frame 2 to perform mold opening and mold sealing actions, thereby further improving the molding efficiency and demolding efficiency, improving the overall operation process, and saving operation time.

[0032] A driving motor 12 is fixed inside the injection molding base 1 , and a driving gear 13 is coaxially fixedly connected to the output end of the driving motor 12 . The driving gear 13 is meshed with the transmission gear 10 .

[0033] With the above structure, the driving motor 12 can drive the driving gear 13 to rotate, and the driving gear 13 can further drive the transmission gear 10 to operate by meshing with the transmission gear 10, thereby automatically completing the opening and closing of the forming frame 2, improving efficiency and reducing the workload of personnel.

[0034] The extension arm is divided into a driving arm 15 located at the bottom and an unfolding arm 14 located at the top. The height adjustment component includes a control motor 16 fixedly connected inside the driving arm 15 and a pair of stabilizing rods 17 fixedly connected to the driving arm 15. The output end of the control motor 16 is coaxially fixedly connected with a control screw 18. The top of the control screw 18 is threadedly connected to the unfolding arm 14, and the top of the stabilizing rod 17 is slidably connected to the unfolding arm 14.

[0035] By adopting the above structure, the regulating motor 16 can be used to drive the regulating screw 18 to rotate. The regulating screw 18 is threadedly connected to the unfolding arm 14, thereby driving the unfolding arm 14 to be lifted and unfolded. The stabilizing rod 17 is then slidably connected to the unfolding arm 14, thereby further stabilizing the stability of the unfolding arm 14 during the unfolding process.

[0036] The working principle of the utility model is as follows: the driving motor 12 drives the driving gear 13 to rotate, and the driving gear 13 further drives the transmission gear 10 to operate by meshing with the transmission gear 10, and the driving screw 11 is driven to rotate by the transmission gear 10. After the driving screw 11 rotates, it will drive the sliding block 9, and the sliding block 9 will further drive the extension arm to perform a corresponding expansion or contraction action, so as to facilitate the control of the extension arm to drive the molding frame 2 to perform a mold sealing action. After the mold sealing is completed, the regulating motor 16 can be used to drive the regulating screw 18 to rotate, and the regulating screw 18 is connected to the unfolding arm 14 through a thread, so as to drive the unfolding arm 14 to descend, so as to realize the docking of the molding frame 2 with the injection port 6, so as to facilitate injection molding into the molding frame 2 through the injection molding base 1, thereby improving the overall injection molding efficiency.

[0037] In summary, by controlling the expansion action of the extension arm through the regulating component, it is convenient to control the extension arm to drive the molding frame 2 to open and close the mold, thereby further improving the molding efficiency and demolding efficiency, improving the overall operation process, saving operation time, and then raising or lowering the molding frame 2 through the height adjustment component to achieve the docking of the molding frame 2 and the injection molding base 1, so as to facilitate injection molding into the molding frame 2 through the injection molding base 1, thereby improving the overall injection molding efficiency.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A valve stem injection molding machine, comprising an injection molding base (1), and a pair of molding frames (2) arranged on the injection molding base (1), characterized in that: A pair of extension arms are vertically arranged on the injection molding base (1), a regulating component for controlling the expansion movement of the extension arms is arranged inside the injection molding base (1), a height adjustment component is arranged inside the extension arms, and the two extension arms are respectively fixedly connected to the corresponding molding frames (2).

2. A valve stem injection molding machine according to claim 1, characterized in that: Four servo motors (3) are fixedly connected inside one of the molding frames (2), and four threaded grooves (4) are provided on the other molding frame (2). The output ends of the four servo motors (3) are coaxially fixedly connected with threaded columns (5), and the four threaded columns (5) are respectively threadedly connected to the corresponding threaded grooves (4). An injection port (6) is provided on the top surface of the injection molding base (1), and an injection molding pipe (7) is provided on the injection molding base (1), and one end of the injection molding pipe (7) is connected to the injection molding port (6).

3. A valve stem injection molding machine according to claim 1, characterized in that: The regulating component comprises a pair of guide slots (8) provided on the injection molding base (1), a sliding block (9) slidably connected in the guide slots (8), a transmission gear (10) rotatably connected in the injection molding base (1), a pair of driving screws (11) coaxially fixed on the transmission gear (10), the two driving screws (11) are respectively threadedly connected to the corresponding sliding blocks (9), and the sliding block (9) is fixedly connected to the extension arm.

4. A valve stem injection molding machine according to claim 3, characterized in that: A driving motor (12) is fixed inside the injection molding base (1), and the output end of the driving motor (12) is coaxially fixedly connected with a driving gear (13), and the driving gear (13) is meshed with the transmission gear (10).

5. The valve stem injection molding machine according to claim 1, characterized in that: The extension arm is divided into a driving arm (15) and an unfolding arm (14); the height adjustment component comprises a control motor (16) fixedly connected inside the driving arm (15) and a pair of stabilizing rods (17) fixedly connected to the driving arm (15); the output end of the control motor (16) is coaxially fixedly connected with a control lead screw (18); the top of the control lead screw (18) is threadedly connected to the unfolding arm (14); and the top of the stabilizing rod (17) is slidably connected to the unfolding arm (14).

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