An injection mold for a wind speed bucket and its injection method

Abstract

The present invention provides an injection mold for a wind speed bucket and an injection molding method thereof. The injection mold includes an upper mold and a lower mold. The upper mold and the lower mold respectively include an upper template and a lower template. There are three groups of side slider mechanisms arranged between the upper template and the lower template. A wind speed bucket forming cavity is formed inside the three groups of side slider mechanisms. A threaded insert is arranged inside the wind speed bucket forming cavity. The upper part of the threaded insert extends to the upper part of the side slider mechanism. The lower part of the threaded insert is connected to a lower forming insert of the wind speed bucket. The lower forming insert of the wind speed bucket is arranged inside the wind speed bucket forming cavity. An ejection device is arranged outside the lower forming insert of the wind speed bucket. In this application, by feeding materials above the three wind cups of the workpiece, the injection balance during the injection molding production process of the mold can be achieved, ensuring the appearance quality of the workpiece. And it ensures that the dynamic balance parameter of the workpiece is within 0.04 g. During the working rotation process of the wind speed bucket, there will be no obvious vibration to generate noise or form resonance with the equipment it is installed on, greatly reducing the noise.

Description

Technical Field

[0001] The present application relates to the technical field of injection molds, and particularly relates to an injection mold for a wind speed cup and an injection method thereof. Background Art

[0002] A wind speed cup refers to an instrument for measuring wind speed. Among them, a cup anemometer is the most common wind speed measurement tool, which consists of three or four hemispherical wind cups and rotates with the wind. The wind speed is calculated by the rotation speed and is commonly used in meteorological stations, navigation, agriculture and other fields.

[0003] In the prior art, the forming methods of cup anemometers mainly include injection molding, stamping and 3D forming. Although the strength of stamping is high, the process complexity is relatively high, which is not suitable for mass production. 3D forming is suitable for rapid prototype verification, but the surface accuracy and strength may be insufficient, and the processing efficiency is low, so it is not suitable for mass production either. Injection molding is suitable for mass production because of its high efficiency. Usually, the forming cavity of an injection mold is composed of an upper cavity and a lower cavity, and injection is carried out by injecting glue from the center. However, in the fields of photoelectric sensor signal detection, high-ultraviolet environment, fluid visualization research, electromagnetic sensitive areas, etc., transparent parts are required, and the appearance requirements are strict. There is a thread in the center of the front of the cup anemometer, and the method of injecting glue from the center will leave obvious marks, which need to be processed later (such as shearing or grinding), affecting the appearance quality and dynamic balance. Moreover, the ejection method in the prior art usually directly ejects with ejector rods, and depressions will be left on the surface of the ejected product. When the depths of the depressions are inconsistent, it will affect the dynamic balance. When the ejection force is unbalanced, defects such as product cracking and denting will also occur.

[0004] The applicant searched using keywords such as "wind speed cup", "anemometer", "wind cup", "injection", "mold", "glue injection", etc., and did not find a technical solution that can solve the above technical problems.

[0005] Therefore, a new solution is needed to solve the above technical problems. Summary of the Invention

[0006] The present invention provides an injection mold for a wind speed cup, which includes an upper mold and a lower mold. The upper mold and the lower mold respectively include an upper template and a lower template. There are three groups of side slider mechanisms arranged between the upper template and the lower template. A wind speed cup forming cavity is opened inside the three groups of side slider mechanisms. A sub-gate is arranged at a position corresponding to the wind cup forming cavity of the wind speed cup forming cavity. A threaded insert is arranged in the wind speed cup forming cavity. The upper part of the threaded insert extends to the upper part of the side slider mechanism. The lower part of the threaded insert is connected to a lower forming insert for the wind speed cup. The lower forming insert for the wind speed cup is arranged in the wind speed cup forming cavity, and an ejection device is arranged outside the lower forming insert for the wind speed cup.

[0007] As a preferred solution, the side slider mechanism includes a side slider. One end of the side slider is provided with a wind speed bucket forming cavity. An inclined guide hole is provided on the side slider, and an inclined guide post matching with the inclined guide hole is arranged in the inclined guide hole. The inclined guide post is fixed in the upper template through a guide post fixing block.

[0008] As a preferred solution, cooling pipelines are arranged in all three side sliders; this ensures cooling balance during the injection molding process of the mold, and situations such as shrinkage pits and inconsistent sizes of each blade after shrinkage caused by local shrinkage will not occur. At the same time, it also greatly ensures the stability of continuous production of the product.

[0009] As a preferred solution, the wind speed bucket forming cavity includes a wind cup concave part forming portion and a wind cup convex part forming groove. A wind cup support forming groove is arranged between the wind cup concave part forming portion and the wind cup convex part forming groove. The wind cup concave part forming portion and the wind cup convex part forming groove on the adjacent side slider form a wind cup forming cavity. The wind cup convex part forming groove and the wind cup concave part forming portion on the adjacent side slider form a wind cup forming cavity. Sub-gating channels are respectively arranged at the upper parts of the three wind cup forming cavities; the wind cup support forming grooves arranged on the three side sliders form three wind cup support forming cavities; an arc cavity is opened on the side slider at the upper part of the wind cup support forming groove, and the arc cavities on the three side sliders form a threaded insert installation hole. The threaded portion of the threaded insert extends into the wind cup support forming groove; a lower forming arc is opened on the side slider at the lower part of the wind cup support forming groove, and the lower forming arcs on the three side sliders form a lower forming cavity. The wind speed bucket lower forming insert is installed in the lower forming cavity; an installation arc is opened at the lower part of the lower forming arc, and the installation arcs on the three side sliders form a contact part installation cavity.

[0010] As a preferred solution, the wind speed bucket lower forming insert includes an installation portion. A forming portion is arranged at the upper part of the installation portion. The forming portion includes an inner hole forming block. A connection hole is arranged in the middle of the inner hole forming block. An outer groove forming block is arranged on the outer side of the inner hole forming block. The upper plane of the inner hole forming block is higher than the upper plane of the outer groove forming block. A convex forming groove is arranged between the inner hole forming block and the outer groove forming block. Three convex platform forming holes are evenly arranged between the outer groove forming block and the convex forming groove. Three rectangular grooves are evenly opened on the outer groove forming block. The rectangular grooves communicate with the convex platform forming holes. The lower plane of the rectangular grooves is in the same plane as the lower plane of the convex platform forming holes. An inner hole forming insert is arranged at the center of the convex platform forming hole. The upper plane of the inner hole forming insert is in the same plane as the upper plane of the outer groove forming block. The bottom of the inner hole forming insert extends to the bottom of the installation portion; a side rectangular block forming groove is arranged on the outer groove forming block between any adjacent convex platform forming holes. A side rectangular block forming groove two is arranged on the outer groove forming block between the adjacent convex platform forming holes on the right side of the side rectangular block forming groove. A cylindrical forming hole communicating with the side rectangular block forming groove two is arranged on the bottom plane of the convex forming groove. The bottom plane of the side rectangular block forming groove two is higher than the bottom plane of the cylindrical forming hole.

[0011] As a preferred solution, the threaded insert includes an insert connection part, the insert connection part is connected to the thread forming part, a shoulder is arranged between the insert connection part and the thread forming part, the shoulder extends into the forming groove of the wind cup bracket, a workpiece ring forming part is arranged at the lower part of the thread forming part, a connecting column is arranged at the lower part of the workpiece ring forming part, the connecting column is matched with the connecting hole, and the lower plane of the workpiece ring forming part contacts the upper plane of the inner hole forming block.

[0012] As a preferred solution, an ejection device is installed on the outer side of the installation part, and the upper plane of the ejection device contacts the lower plane of the workpiece.

[0013] As a preferred solution, the ejection device includes a contact part that contacts the lower plane of the workpiece, an ejection part is arranged at the lower part of the contact part, and an ejection rod is installed on the ejection part.

[0014] As a preferred solution, the ejection part includes at least three evenly arranged ejection platforms, and the ejection rods are installed on the ejection platforms; the ejection rods are evenly distributed and cooperate with the contact part, ensuring the balanced ejection of the product and preventing defects such as product cracking and denting caused by unbalanced ejection force.

[0015] As a preferred solution, a transition arc is arranged between adjacent ejection platforms.

[0016] As a preferred solution, the upper part of the ejection platform corresponds to the wind cup forming cavity.

[0017] As a preferred solution, a slider groove is arranged at the bottom of the slider, and an ejection platform is installed in the slider groove, and the upper plane of the ejection platform contacts the plane of the slider groove.

[0018] As a preferred solution, the upper mold includes an upper mold bottom plate, a gate plate is arranged at the lower part of the upper mold bottom plate, an upper template is arranged at the lower part of the gate plate, three guide post fixing block installation grooves are evenly opened in the upper template, the guide post fixing blocks are installed in the guide post fixing block installation grooves, a slider upper installation groove is arranged at the upper part of the guide post fixing block installation groove, the three slider upper installation grooves communicate, and the side slider cooperates with the slider upper installation groove.

[0019] As a preferred solution, the lower mold includes a lower template, three slider lower installation grooves corresponding to the slider upper installation grooves are evenly opened on the lower template, and the side slider cooperates with the slider lower installation grooves; a top ejection part installation groove is arranged in the middle of the lower template, the top ejection part is installed in the top ejection part installation groove, an ejection rod is installed on the top ejection part, the ejection rod is connected to the ejection plate, a top ejection bottom plate is arranged at the lower part of the ejection plate, a lower template bottom plate is arranged at the lower part of the top ejection bottom plate, and a spacer block is arranged between the lower template bottom plate and the lower template.

[0020] As a preferred solution, the bottom of the side slider contacts the lower mounting groove of the slider, the plane of the slider groove contacts the upper plane of the lower template, a spring mounting groove is provided in the side slider, a spring is installed in the spring mounting groove, and one end of the spring abuts against the side wall of the lower mounting groove of the slider near the central position.

[0021] The present application also provides a method for injecting and molding a wind speed bucket, comprising the following steps:

[0022] Step 1: Install the threaded insert on the upper part of the lower molding insert of the wind speed bucket;

[0023] Step 2: Close the mold and pour through an injection molding machine;

[0024] Step 3: After injection molding and cooling, open the mold. During the mold opening process, the side slider mechanism slides backward, the injection molding machine performs an ejection action, and the workpiece is ejected through the contact part;

[0025] Step 4: Remove the threaded insert and take out the workpiece;

[0026] Step 5: Repeat Steps 1 to 4 in a cycle.

[0027] The present application has the following advantages:

[0028] 1. By feeding from above the three wind cups of the workpiece, it is possible to achieve balanced glue injection during the injection molding production process of the mold, ensuring the appearance quality of the workpiece;

[0029] 2. For the workpiece generated by this mold and method, it is ensured that the dynamic balance parameter of the workpiece is within 0.04 g. During the working rotation process of the wind speed bucket, there will be no obvious vibration to generate noise or resonate with the equipment it is installed on, greatly reducing the noise;

[0030] 3. The gate position is set on the slider. Compared with the traditional three-plate mold, it is more conducive to adjusting the gate size, and the processing accuracy is better. There will be no carbon deposition phenomenon during the gate discharge process, greatly ensuring uniform glue injection during the injection molding process;

[0031] 4. The core and cavity of the workpiece are set on the side slider. The movement of the side slider can make the workpiece receive uniform force during the demolding process, reducing the deformation and damage of the plastic part, thereby improving the processing quality of the workpiece; in addition, using side slider mold splitting can reduce the number of parting surfaces of the mold, simplify the mold structure, thereby shortening the molding cycle and improving production efficiency;

[0032] 5. The side slider slides in the lower mounting groove of the slider, which has a positioning function to ensure the position accuracy of the side slider;

[0033] 6. The ejection is performed by contacting the entire plane of the ejection part with the workpiece, ensuring ejection stability while avoiding defects at the ejection points and guaranteeing a better appearance. In cooperation with the evenly distributed ejection rods, it further ensures the balanced ejection of the product, preventing defects such as product cracking and indentation caused by unbalanced ejection force.

[0034] 7. A cooling device with a circulating water path is provided inside the side slider, ensuring that during the die production process, the side slider will not overheat locally, causing local deformation of the die and the workpiece, and can particularly well guarantee the production stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic structural diagram of the workpiece at Angle 1;

[0036] Figure 2 It is a schematic structural diagram of the workpiece at Angle 2;

[0037] Figure 3 It is a schematic structural diagram of the workpiece at Angle 3;

[0038] Figure 4 It is a schematic diagram of the overall structure of the present application at Angle 1;

[0039] Figure 5 It is a schematic diagram of the overall structure of the present application at Angle 2;

[0040] Figure 6 It is a schematic structural diagram of the upper die of the present application at Angle 1;

[0041] Figure 7 It is a schematic structural diagram of the upper die of the present application at Angle 2;

[0042] Figure 8 It is a schematic structural diagram of the upper template of the present application at Angle 1;

[0043] Figure 9 It is a schematic structural diagram of the upper template of the present application at Angle 2;

[0044] Figure 10 It is a schematic structural diagram of the lower die of the present application at Angle 1;

[0045] Figure 11 It is a schematic structural diagram of the lower die of the present application at Angle 2;

[0046] Figure 12 It is a schematic structural diagram of the lower template of the present application;

[0047] Figure 13 It is a schematic structural diagram of the side slider mechanism of the present application at Angle 1;

[0048] Figure 14 It is a schematic structural diagram of the side slider mechanism of the present application at Angle 2;

[0049] Figure 15 It is a schematic structural view of the first angle of the side slider of the present application;

[0050] Figure 16 It is a schematic structural view of the second angle of the side slider of the present application;

[0051] Figure 17 It is a schematic structural view of the threaded insert of the present application;

[0052] Figure 18 It is a schematic structural view of the first angle of the cooperation between the lower forming insert of the wind speed hopper and the ejection mechanism of the present application;

[0053] Figure 19 It is a schematic structural view of the second angle of the cooperation between the lower forming insert of the wind speed hopper and the ejection mechanism of the present application;

[0054] Figure 20 It is a schematic structural view of the first angle of the lower forming insert of the wind speed hopper;

[0055] Figure 21 It is a schematic structural view of the second angle of the lower forming insert of the wind speed hopper;

[0056] Figure 22 It is a schematic structural view of the third angle of the lower forming insert of the wind speed hopper;

[0057] Figure 23 It is a schematic structural view of the fourth angle of the lower forming insert of the wind speed hopper;

[0058] Figure 24 It is a schematic structural view of the gating system of the present application;

[0059] Wherein:

[0060] 1. Upper mold; 2. Lower mold; 3. Upper template; 4. Lower template; 5. Side slider mechanism; 6. Sub-gate; 7. Side slider; 8. Angled guide hole; 9. Angled guide pin; 10. Guide pin fixing block; 11. Cooling pipe; 12. Thread insert; 13. Thread part; 14. Forming insert for the lower part of the wind speed hopper; 15. Ejection device; 16. Wind cup; 17. Forming part for the concave part of the wind cup; 18. Forming groove for the convex part of the wind cup; 19. Forming groove for the wind cup support; 20. Wind cup support; 22. Arc cavity; 23. Installation hole for the thread insert; 24. Thread forming part; 25. Lower forming arc; 26. Installation arc; 27. Contact part installation cavity; 28. Installation part; 29. Forming part; 30. Inner hole forming block; 31. Middle inner hole; 32. Connecting hole; 33. Outer groove forming block; 34. Outer groove; 35. Forming groove for the protrusion; 36. Protrusion; 37. Forming hole for the boss; 38. Boss; 39. Rectangular groove; 40. Rectangular part; 41. Inner hole forming insert; 42. Inner hole; 43. Forming groove for the side rectangular block; 44. Side rectangular block; 45. Second forming groove for the side rectangular block; 46. Second side rectangular block; 47. Forming hole for the cylinder; 48. Cylinder; 49. Insert connecting part; 50. Shoulder; 51. Forming part for the workpiece ring; 52. Ring; 53. Connecting column; 54. Lower plane; 55. Contact part; 56. Ejection part; 57. Ejection rod; 58. Ejection table; 59. Transition arc; 60. Slider groove; 61. Upper mold bottom plate; 62. Sprue plate; 63. Installation groove for the guide pin fixing block; 64. Upper installation groove for the slider; 65. Sprue bushing; 66. Locating ring; 67. Guide pin; 68. Lower installation groove for the slider; 69. Installation groove for the ejection part; 70. Ejection plate; 71. Ejection bottom plate; 72. Lower template bottom plate; 73. Spacer block; 74. Guide bush; 75. Contact plane; 76. Spring installation groove; 77. Side wall. Detailed implementation manners

[0061] The following will Figure 1 be combined with the attached Figure 24 drawings to elaborate on the detailed implementation manners of the present invention. It should be noted that the detailed implementation manners described herein are only for the purpose of explaining and interpreting the present invention, and are not used to limit the present invention. Embodiment 1

[0062] This embodiment is used to manufacture Figures 1 to 3 the workpiece shown, and provides an injection mold for a wind speed hopper, as shown in Figure 4 and Figure 5 , which includes an upper mold 1 and a lower mold 2. As shown in Figures 6 to 12 , the upper mold 1 and the lower mold 2 respectively include an upper template 3 and a lower template 4. Between the upper template 3 and the lower template 4, there are provided three groups of side slider mechanisms 5 as shown in Figure 13 and Figure 14 . Inside the three groups of side slider mechanisms 5, there are opened Figure 15 andFigure 16 The wind speed bucket forming cavity shown has a sub-gate 6 provided at a position corresponding to the wind cup forming cavity of the wind speed bucket forming cavity. Specifically, the side slider mechanism 5 includes a side slider 7. One end of the side slider 7 is provided with a wind speed bucket forming cavity. An inclined guide hole 8 is provided on the side slider 7, and an inclined guide post 9 mating with it is arranged in the inclined guide hole 8. The inclined guide post 9 is fixed in the upper template 3 through a guide post fixing block 10. A cooling pipeline 11 is arranged in the side slider 7. The cooling pipeline 11 adopts a cooling method of a circulating water path, ensuring cooling balance during the injection molding process of the mold and preventing situations such as shrinkage pits and inconsistent sizes of each blade caused by local shrinkage of the side slider 7 and the workpiece. At the same time, it also greatly ensures the stability of continuous production of the product;

[0063] A Figure 17 thread insert 12 shown is arranged in the wind speed bucket forming cavity. The thread insert 12 is used to form the threaded portion 13 of the workpiece. The upper part of the thread insert 12 extends to the upper part of the side slider mechanism 5. A Figures 18 - 23 wind speed bucket lower forming insert 14 shown is also arranged in the wind speed bucket forming cavity. The upper part of the wind speed bucket lower forming insert 14 is connected to the lower part of the thread insert 12. A knockout device 15 is arranged on the outer side of the wind speed bucket lower forming insert 14.

[0064] In this embodiment, feeding is carried out above the three wind cups 16 of the workpiece, which can achieve balanced glue injection during the injection molding production process of the mold, ensure the appearance quality of the workpiece, and ensure that the dynamic balance parameter of the workpiece is within 0.04 g. During the working rotation process of the wind speed bucket, there will be no obvious vibration to generate noise or resonate with the equipment it is installed on, greatly reducing noise. The sub-gate 6 of this application is arranged on the side slider mechanism 5. Compared with the traditional three-plate mold, it is more conducive to adjusting the gate size, has better machining accuracy, and will not produce carbon deposition during the electric discharge process of the gate. In addition, the knockout device 15 is arranged on the outer side of the wind speed bucket lower forming insert 14, and will not leave dot-shaped ejector pin marks on the surface of the workpiece, further ensuring the appearance quality of the workpiece. Embodiment Two

[0065] This embodiment specifically describes the wind speed bucket forming cavity:

[0066] The forming cavity of the wind speed bucket includes a wind cup concave part forming portion 17 and a wind cup convex part forming groove 18. A wind cup support forming groove 19 is provided between the wind cup concave part forming portion 17 and the wind cup convex part forming groove 18. The wind cup concave part forming portion 17 and the wind cup convex part forming groove 18 on the adjacent side slider 7 form a wind cup forming cavity. The wind cup convex part forming groove 18 and the wind cup concave part forming portion 17 on the adjacent side slider 7 form a wind cup forming cavity. The wind cup concave part forming portions 17 and the wind cup convex part forming grooves 18 provided on the three side sliders 7 form three wind cup forming cavities. Sub-gates 6 are respectively provided at the upper parts of the three wind cup forming cavities; The wind cup support forming grooves 19 on the adjacent side sliders 7 form a wind cup support forming cavity, and the wind cup support forming grooves 19 provided on the three side sliders 7 form three wind cup forming cavities; The above three wind cup forming cavities are used to form the three wind cups 16 of the workpiece, and the three wind cup support forming cavities are used to form the three wind cup supports 20 of the workpiece; An arc cavity 22 is formed in the upper part of the wind cup support forming groove 19 on the side slider 7. The arc cavities 22 on the three side sliders 7 form a threaded insert mounting hole 23. A threaded insert 12 is installed in the threaded insert mounting hole 23. The threaded forming portion 24 of the threaded insert 12 extends into the wind cup support forming groove 19. The threaded insert 12 is used to form the threaded portion 13 of the workpiece; A lower forming arc 25 is formed in the lower part of the wind cup support forming groove 19 on the side slider 7. The lower forming arcs 25 on the three side sliders 7 form a lower forming cavity. The wind speed bucket lower forming insert 14 is installed in the lower forming cavity and is used to form the lower forming portion of the workpiece; An installation arc 26 is formed in the lower part of the lower forming arc 25. The installation arcs 26 on the three side sliders 7 form a contact portion installation cavity 27. The wind speed bucket lower forming insert 14 is arranged in the contact portion installation cavity 27.

[0067] In this embodiment, the core and cavity of the workpiece are arranged on the side slider 7. The movement of the side slider 7 can enable the workpiece to receive uniform force during the demolding process, reduce the deformation and damage of the plastic part, and thus improve the processing quality of the workpiece; In addition, using the side slider 7 for mold splitting can reduce the number of parting surfaces of the mold, simplify the mold structure, thereby shortening the molding cycle and improving production efficiency. Embodiment Three

[0068] This embodiment specifically describes the wind speed bucket lower forming insert 14 and the threaded insert 12. Specifically:

[0069] The lower forming insert 14 of the wind speed hopper includes a mounting portion 28 which is fitted and mounted with the contact portion mounting cavity 27. The upper part of the mounting portion 28 is provided with a forming portion 29. The diameter of the connection part between the mounting portion 28 and the forming portion 29 is larger than that of the forming portion 29. The mounting portion 28 and the forming portion 29 are integrally formed. The forming portion 29 includes an inner hole forming block 30 for forming the middle inner hole 31 of the workpiece. A connection hole 32 is provided in the middle of the inner hole forming block 30 for connecting with the threaded insert 12. An outer groove forming block 33 is arranged outside the inner hole forming block 30 for forming the outer groove 34 of the workpiece. The upper plane of the inner hole forming block 30 is higher than the upper plane of the outer groove forming block 33. A convex forming groove 35 is arranged between the inner hole forming block 30 and the outer groove forming block 33 for forming the convex 36 of the workpiece. Three boss forming holes 37 are evenly arranged between the outer groove forming block 33 and the convex forming groove 35 for forming three bosses 38 of the workpiece. Three rectangular grooves 39 are evenly opened on the outer groove forming block 33. The rectangular grooves 39 communicate with the boss forming holes 37. The lower plane of the rectangular grooves 39 is in the same plane as the lower plane of the boss forming holes 37. The rectangular grooves 39 are used for forming the rectangular portion 40 of the workpiece. An inner hole forming insert 41 is arranged at the center of the boss forming hole 37. The upper plane of the inner hole forming insert 41 is in the same plane as the upper plane of the outer groove forming block 33. The bottom of the inner hole forming insert 41 extends to the bottom of the mounting portion 28. The inner hole forming insert 41 is used for forming the inner hole 42 of the workpiece. A side rectangular block forming groove 43 is arranged on the outer groove forming block 33 between any adjacent boss forming holes 37 for forming the side rectangular block 44 of the workpiece. A side rectangular block forming groove two 45 is arranged on the outer groove forming block 33 between the adjacent boss forming holes 37 on the right side of the side rectangular block forming groove 43 for forming the side rectangular block two 46 of the workpiece. A cylindrical forming hole 47 communicating with the side rectangular block forming groove two 45 is arranged on the bottom plane of the convex forming groove 35. The bottom plane of the side rectangular block forming groove two 45 is higher than the bottom plane of the cylindrical forming hole 47. The cylindrical forming hole 47 is used for forming the cylinder 48 of the workpiece.

[0070] The threaded insert 12 includes an insert connection part 49, the insert connection part 49 is connected to the thread forming part 24, the insert connection part 49 and the thread forming part 24 are integrally formed, a shoulder 50 is provided between the insert connection part 49 and the thread forming part 24, the shoulder 50 extends into the anemometer cup bracket forming groove 19, a workpiece ring forming part 51 is provided at the lower part of the thread forming part 24, the workpiece ring forming part 51 is used for forming the ring 52 of the workpiece, a connecting column 53 is provided at the lower part of the workpiece ring forming part 51, the connecting column 53 cooperates with the connecting hole 32, and the connection between the threaded insert 12 and the lower forming insert 14 of the anemometer is realized through the connecting column 53 and the connecting hole 32. The lower plane of the workpiece ring forming part 51 (the plane where the workpiece ring forming part 51 is connected to the connecting column 53) contacts the upper plane of the inner hole forming block 30; specifically, an ejection device 15 is installed on the outer side of the installation part 28, and the upper plane of the ejection device 15 contacts the lower plane 54 of the workpiece. More specifically, the ejection device 15 includes a contact part 55 that contacts the lower plane 54 of the workpiece, and the upper plane of the contact part 55 contacts the lower plane 54 of the workpiece. Preferably, the outer diameter of the upper plane of the contact part 55 is equal to the outer diameter of the lower plane 54 of the workpiece, so as to better realize the ejection of the workpiece and not leave dot-shaped ejector pin marks, ensuring the appearance quality of the workpiece; a ejection part 56 is provided at the lower part of the contact part 55, and an ejection rod 57 is installed on the ejection part 56; the ejection part 56 includes at least three evenly arranged ejection platforms 58, and the ejection rod 57 is installed on the ejection platform 58; in order to save materials and reduce weight, a transition arc 59 is provided between adjacent ejection platforms 58; by the way that the contact part 55 is in full contact with the lower plane 54 of the workpiece, and in cooperation with the evenly distributed ejection rods 57, the ejection balance of the product is ensured, and defects such as product cracking and denting caused by unbalanced ejection force will not occur; in order to better realize the ejection of the workpiece, the upper part of the ejection platform 58 corresponds to the anemometer cup forming cavity, so that the ejection force is more balanced, and thus the ejection of the workpiece is better realized; a slide block groove 60 is provided at the bottom of the side slide block 7, and the ejection platform 58 is installed in the slide block groove 60, and the upper plane of the ejection platform 58 contacts the plane of the slide block groove 60. Embodiment 4

[0071] This embodiment describes the upper mold 1 and the lower mold 2. Specifically:

[0072] The upper mold 1 includes an upper mold bottom plate 61, a gate plate 62 is provided at the lower part of the upper mold bottom plate 61, an upper template 3 is provided at the lower part of the gate plate 62, the upper mold bottom plate 61, the gate plate 62, and the upper template 3 are connected to each other by means of screws, etc. Three guide post fixing block installation grooves 63 are evenly opened in the upper template 3, the guide post fixing block 10 is installed in the guide post fixing block installation grooves 63, a slide block upper installation groove 64 is provided at the upper part of the guide post fixing block installation grooves 63, the three slide block upper installation grooves 64 communicate, and the side slide block 7 cooperates with the slide block upper installation groove 64.

[0073] The upper mold base plate 61, the gate plate 62 and the upper mold plate 3 are provided with a pouring device, and the pouring device is connected to the wind speed bucket molding cavity. The pouring device includes a main channel arranged on the upper mold base plate 61 and the gate plate 62, and the main channel is connected to the branch runner 6. The branch runner 6 is arranged at the upper part of the wind cup molding cavity of the wind speed bucket molding cavity, and the branch runner 6 is opened on the upper mold plate 3 and the side slider 7; preferably, a main channel bushing 65 is provided on the main channel, and a positioning ring 66 is provided on the upper mold base plate 61; a guide column 67 is also provided on the upper mold plate 3.

[0074] The lower mold 2 includes a lower mold plate 4, which is evenly provided with three slider lower mounting grooves 68 corresponding to the slider upper mounting grooves 64, and the side slider 7 cooperates with the slider lower mounting groove 68; the middle part of the lower mold plate 4 is provided with an ejector mounting groove 69, the ejector 56 is installed in the ejector mounting groove 69, the ejector 56 is installed with an ejector rod 57, the ejector rod 57 is connected to the ejector plate 70, the lower part of the ejector plate 70 is provided with an ejector bottom plate 71, the lower part of the ejector bottom plate 71 is provided with a lower mold base plate 72, a pad 73 is provided between the lower mold base plate 72 and the lower mold plate 4, the pad 73 is connected to the lower mold base plate 72 and the lower mold plate 4 respectively by screws or the like; the lower mold plate 4 is also provided with a guide sleeve 74, which cooperates with the guide column 67 provided on the upper mold plate 3 to facilitate the positioning and opening and closing of the mold.

[0075] Preferably, the bottom of the side slider 7 contacts the lower mounting groove 68 of the slider, and the contact plane 75 of the slider groove 60 contacts the upper plane of the lower template 4. A spring mounting groove 76 is provided in the side slider 7, and a spring is installed in the spring mounting groove 76. One end of the spring abuts against the side wall 77 of the lower mounting groove 68 of the slider near the center position; the spring is set to control the movement of the side slider 7, ensure the stability of the mold closing and mold opening processes, and improve the life of the mold; when opening the mold: the spring provides elastic force to push the side slider 7 to quickly detach from the molding area to avoid the slider being stuck in the lower mounting groove 68 of the slider and causing damage; before closing the mold: the side slider 7 is pre-reset under the action of the inclined guide column 9, and the spring provides uniform force assistance for the reset of the side slider 7, further ensuring accurate alignment during mold closing to prevent interference or collision. Example 5

[0076] This embodiment provides a wind speed bucket injection molding method, comprising the following steps:

[0077] Step 1: Install the threaded insert 12 on the upper part of the wind speed bucket lower forming insert 14; specifically, install the connecting column 53 in the connecting hole 32 so that the lower plane of the workpiece circular forming portion 51 contacts the upper plane of the inner hole forming block 30;

[0078] Step 2: close the mold and pour through the injection molding machine;

[0079] Step 3: After the injection molding is completed and cooled, the mold is opened. During the mold opening process, the side slider mechanism 5 slides backward, and the injection molding machine performs an ejection action to eject the workpiece through the contact part 55. Specifically, under the action of the inclined guide post 9 and the inclined guide hole 8, the side slider 7 moves along the lower slider mounting groove 68 and the upper slider mounting groove 64 in a direction away from the workpiece, separating the core and cavity of the workpiece to realize the molding of the workpiece. While the side slider mechanism 5 is working, under the action of the ejector rod 57, the upper plane of the contact part 55 contacts the lower plane 54 of the workpiece to eject the workpiece.

[0080] Step 4: Remove the threaded insert 12 and take out the workpiece.

[0081] Step 5: Repeat Steps 1 to 4 cyclically.

[0082] The working principle of this application is as follows: The material enters the airspeed hopper molding cavity through the main runner and the sub-gate runner 6. More specifically, it enters the airspeed hopper molding cavity through the sub-gate runner 6 corresponding to the top of the airspeed hopper molding cavity to realize the integral molding of the workpiece. After the molding is completed, when the mold is opened, the side slider 7 moves outwards to cooperate with the action of the ejector rod 57 to eject the workpiece for the next cycle of production.

[0083] In summary, due to the adoption of the above technical solutions, this application has the following advantages:

[0084] 1. By feeding materials above the three wind cups of the workpiece, it can achieve balanced glue injection during the injection molding production process of the mold, ensuring the quality of the workpiece appearance.

[0085] 2. For the workpiece generated by this mold and method, it ensures that the dynamic balance parameter of the workpiece is within 0.04 g. During the working rotation of the airspeed hopper, there will be no obvious vibration to generate noise or resonance with the equipment it is installed on, greatly reducing the noise.

[0086] 3. The gate position is set on the slider. Compared with the traditional three-plate mold, it is more conducive to adjusting the gate size, and the processing accuracy is better, without carbon deposition during the gate discharge process; it greatly ensures uniform glue injection during the injection molding process.

[0087] 4. The side slider slides in the lower slider mounting groove, which has a positioning function to ensure the accuracy of the side slider position.

[0088] 5. By ejecting the workpiece through the entire plane of the ejection part in contact with the workpiece, while ensuring the ejection stability, there will be no defects at the ejection points, ensuring a better appearance; cooperating with the evenly distributed ejector rods, it further ensures the balanced ejection of the product, and there will be no defects such as product cracking or indentation caused by unbalanced ejection force.

[0089] 6. A cooling device with a circulating water circuit is provided inside the side slider, ensuring that during the mold production process, the side slider will not overheat locally, causing local deformation of the mold and the workpiece, and can particularly well guarantee the production stability.

[0090] 8. The core and cavity of the workpiece are arranged on the side slider. The movement of the side slider can make the workpiece receive uniform force during the demolding process, reducing the deformation and damage of the plastic part, and thus improving the processing quality of the workpiece. In addition, using the side slider for mold splitting can reduce the number of parting surfaces of the mold, simplify the mold structure, thereby shortening the molding cycle and improving production efficiency.

[0091] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0092] The preferred embodiments of the present application have been described in detail above with reference to the drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept scope of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application.

[0093] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any suitable way without contradiction. To avoid unnecessary repetition, various possible combination methods of the present application will not be described separately.

[0094] Furthermore, any combination can be made between various different embodiments of the present application as long as it does not violate the idea of the present application, and it should also be regarded as the content disclosed in the present application.

Claims

1. An injection mold for a wind speed bucket, comprising an upper mold (1) and a lower mold (2), wherein the upper mold (1) and the lower mold (2) respectively comprise an upper template (3) and a lower template (4), characterized in that, There are three sets of side slider mechanisms (5) arranged between the upper template (3) and the lower template (4). Inside the three sets of side slider mechanisms (5), there are formed wind speed bucket forming cavities for forming workpieces. A threaded insert (12) is arranged in the wind speed bucket forming cavity. The lower part of the threaded insert (12) is connected to the wind speed bucket lower forming insert (14). An ejection device (15) is arranged on the outer side of the wind speed bucket lower forming insert (14); The side slider mechanism (5) includes a side slider (7). One end of the side slider (7) is provided with a wind speed bucket forming cavity. An inclined guide hole (8) is arranged on the side slider (7), and an inclined guide post (9) matched with it is arranged in the inclined guide hole (8). The inclined guide post (9) is fixed in the upper template (3) through a guide post fixing block (10); Among them, the wind speed bucket forming cavity includes a wind cup concave part forming part (17) and a wind cup convex part forming groove (18). A wind cup support forming groove (19) is arranged between the wind cup concave part forming part (17) and the wind cup convex part forming groove (18). The wind cup concave part forming part (17) and the wind cup convex part forming groove (18) on the adjacent side slider (7) form a wind cup forming cavity. The wind cup convex part forming groove (18) and the wind cup concave part forming part (17) on the adjacent side slider (7) form a wind cup forming cavity. Sub-gates (6) are respectively arranged at the upper parts of the three wind cup forming cavities; The wind cup support forming grooves (19) on the adjacent side sliders (7) form a wind cup support forming cavity; An arc cavity (22) is formed on the side slider (7) at the upper part of the wind cup support forming groove (19). The arc cavities (22) on the three side sliders (7) form a threaded insert installation hole (23) for installing the threaded insert (12). The threaded part (13) of the threaded insert (12) extends into the wind cup support forming groove (19); A lower forming arc (25) is formed on the side slider (7) at the lower part of the wind cup support forming groove (19). The lower forming arcs (25) on the three side sliders (7) form a lower forming cavity. The wind speed bucket lower forming insert (14) is installed in the lower forming cavity; An installation arc (26) is formed at the lower part of the lower forming arc (25). The installation arcs (26) on the three side sliders (7) form a contact part installation cavity (27).

2. The injection mold for a wind speed bucket according to claim 1, wherein, The lower forming insert (14) of the wind speed hopper includes an installation part (28). The upper part of the installation part (28) is provided with a forming part (29). The forming part (29) includes an inner hole forming block (30). A connection hole (32) is arranged in the middle of the inner hole forming block (30). An outer groove forming block (33) is arranged outside the inner hole forming block (30). The upper plane of the inner hole forming block (30) is higher than the upper plane of the outer groove forming block (33). A convex forming groove (35) is arranged between the inner hole forming block (30) and the outer groove forming block (33). Three boss forming holes (37) are evenly arranged between the outer groove forming block (33) and the convex forming groove (35). Three rectangular grooves (39) are evenly opened on the outer groove forming block (33). The rectangular grooves (39) communicate with the boss forming holes (37). The lower plane of the rectangular grooves (39) is in the same plane as the lower plane of the boss forming holes (37). An inner hole forming insert (41) is arranged at the center of the boss forming hole (37). The upper plane of the inner hole forming insert (41) is in the same plane as the upper plane of the outer groove forming block (33). The bottom of the inner hole forming insert (41) extends to the bottom of the installation part (28); A side rectangular block forming groove (43) is arranged on the outer groove forming block (33) between any adjacent boss forming holes (37). A second side rectangular block forming groove (45) is arranged on the outer groove forming block (33) between the adjacent boss forming holes (37) on the right side of the side rectangular block forming groove (43). A cylindrical forming hole (47) communicating with the second side rectangular block forming groove (45) is arranged on the bottom plane of the convex forming groove (35). The bottom plane of the second side rectangular block forming groove (45) is higher than the bottom plane of the cylindrical forming hole (47).

3. The injection mold for a wind speed bucket according to claim 2, characterized in that, The threaded insert (12) includes an insert connection part (49). The insert connection part (49) is connected to the thread forming part (24). A shoulder (50) is arranged between the insert connection part (49) and the thread forming part (24). The shoulder (50) extends into the wind cup support forming groove (19). A workpiece ring forming part (51) is arranged at the lower part of the thread forming part (24). A connection column (53) is arranged at the lower part of the workpiece ring forming part (51). The connection column (53) cooperates with the connection hole (32). The plane where the workpiece ring forming part (51) is connected to the connection column (53) contacts the upper plane of the inner hole forming block (30).

4. The injection mold for a wind speed bucket according to claim 2, wherein A ejection device (15) is installed outside the installation part (28). The upper plane of the ejection device (15) contacts the lower plane (54) of the workpiece.

5. The injection mold for a wind speed bucket according to claim 4, characterized in that, The ejection device (15) includes a contact part (55) contacting the lower plane (54) of the workpiece. A ejection part (56) is arranged at the lower part of the contact part (55). An ejection rod (57) is installed on the ejection part (56).

6. The injection mold for a wind speed bucket according to claim 4, wherein, The ejection part (56) includes at least three evenly arranged ejection platforms (58). The ejection rod (57) is installed on the ejection platforms (58).

7. The injection mold for a wind speed bucket according to claim 6, characterized in that The upper part of the ejection platform (58) corresponds to the wind cup forming cavity.

8. The injection molding method of an airspeed hopper injection mold according to any one of claims 1-7, characterized in that, Including the following steps: Step 1: Install the threaded insert (12) on the upper part of the airspeed hopper lower forming insert (14); Step 2: Close the mold and pour through an injection molding machine; Step 3: After injection molding and cooling, open the mold. During the mold opening process, the side slider mechanism (5) slides backward, and the injection molding machine performs an ejection action to eject the workpiece through the contact part (55); Step 4: Remove the threaded insert (12) and take out the workpiece; Step 5: Repeat Steps 1 to 4 in a cycle.

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