Injection mold for injection molding a sealing ring on a hemispherical part

Abstract

The utility model discloses a kind of injection moulds of sealing ring injection molding on hemispherical part, the utility model relates to the technical field of injection mould structure, it includes upper die B and lower die B, lower die B includes bottom plate, top plate fixed on bottom plate, the top surface of top plate and along its length direction fixed with multiple stand columns, multiple stand columns top end portion between fixed with second base, second base is embedded with second charging plate;The bottom of each containing groove is provided with through hole that sequentially downward penetrates second charging plate and second base, the bottom surface of top plate and located at its left and right end are fixed with jacking oil cylinder, the acting end between the two jacking oil cylinder piston rods is fixed with the floating plate that is sleeved in the outside of stand column, the top surface of floating plate is fixed with multiple jacking rods.The utility model has the beneficial effects that: greatly reduce worker work intensity, improve hemispherical part to take out efficiency from containing groove.

Description

Technical Field

[0001] This utility model relates to the technical field of injection mold structure, and in particular to an injection mold for injection molding a sealing ring on a hemispherical part. Background Technology

[0002] The structure of a certain type of hemispherical part 1 is as follows: Figures 1-2 As shown, the bottom of the hemispherical part 1 is flat, and the front and rear parts of the hemispherical part 1 are also flat. A ring-shaped groove 2 is formed along the circumference of the top surface of the hemispherical part 1. The manufacturing process requires that a sealing ring 3 be injection-molded into the ring-shaped groove 2 of each hemispherical part 1, such as... Figures 3-4 As shown.

[0003] A certain workshop uses, for example Figures 5-9 The injection mold shown is used to inject a sealing ring 3 into the annular groove 2 of the hemispherical part 1. The injection mold includes an upper mold A4 and a lower mold A5. The lower mold A5 includes a first base 6 and a first loading plate 7. The first loading plate 7 is embedded in the first base 6. A plurality of receiving grooves 8 are formed on the top surface of the first loading plate 7. The receiving grooves 8 are matched with the outer contour of the hemispherical part 1.

[0004] The upper mold A4 includes an upper support 9, a pad 10, and a fixing plate 11, which are fixed together from top to bottom. A fastening plate 12 is fixed inside the fixing plate 11. Multiple bosses 13 are fixed on the bottom surface of the fastening plate 12. Each boss 13 corresponds to a receiving groove 8. Each boss 13 has an annular groove 14 on the bottom surface of the fastening plate 12. Multiple injection holes A15 are opened between the upper support 9, the pad 10, the fixing plate 11, and the fastening plate 12. The lower end of each injection hole A15 is connected to each annular groove 14. The upper end of each injection hole A15 penetrates the top surface of the upper support 9.

[0005] The method for injection molding a sealing ring 3 into the annular groove 2 of the hemispherical part 1 using this injection mold is as follows:

[0006] S1. The worker fixes the upper support 9 of the upper mold A4 onto the piston rod of the press, thereby completing the installation of the upper mold A4. Figure 10 As shown, at this time, the fastening plate 12 of the upper mold A4 is directly above the first loading plate 7 of the lower mold A5, and each boss 13 on the bottom surface of the fastening plate 12 is directly above each receiving groove 8 in the first loading plate 7.

[0007] S2, the worker places a [item] into each of the receiving slots 8 of the first loading plate 7. Figures 1-2 The hemispherical part 1 shown is as follows: Figure 11As shown, and ensure that the spherical cavity of the hemispherical part 1 faces upward, at this time, the annular groove 2 of the hemispherical part 1 and the annular groove 14 of the fastening plate 12 are exactly opposite each other vertically.

[0008] S3. The worker controls the piston rod of the press to extend downwards. The piston rod drives the upper support 9 to move downwards. The upper support 9 drives the pad 10, the fixing plate 11, and the fastening plate 12 to move downwards synchronously. The fastening plate 12 drives each of its protrusions 13 to move downwards synchronously. When the piston rod of the press extends downwards to a set distance, each of the protrusions 13 of the fastening plate 12 is embedded into the spherical cavity of each hemispherical part 1. Furthermore, the bottom surface of the fastening plate 12 contacts the top surface of the hemispherical part 1. At the same time, the annular groove 14 of the fastening plate 12 and the annular recess 2 of the hemispherical part 1 form a sealed annular cavity. Figures 12-13 As shown, the annular sealed cavity is connected to the injection hole A15;

[0009] S4. A certain amount of liquid silicone is injected into the upper port of each injection hole A15 using an injection molding machine. The liquid silicone passes through the injection hole A15, the lower port of injection hole A15, and finally enters the sealed annular cavity. The liquid silicone fills the sealed annular cavity to form a sealing ring 3. After cooling for a period of time, a sealing ring 3 is finally injection molded on each of the multiple hemispherical parts 1. Figures 3-4 As shown;

[0010] S5. The specific steps for removing the hemispherical part 1 with the injection-molded sealing ring 3 are as follows:

[0011] S51, control the piston rod of the press to retract upward, the piston rod drives the upper support 9 to move upward, the upper support 9 drives the pad 10, the fixing plate 11 and the fastening plate 12 to move upward synchronously, the fastening plate 12 drives each boss 13 to move upward synchronously, and the boss 13 exits from the ball cavity of the hemispherical part 1.

[0012] S52. After the boss 13 is removed from the spherical cavity of the hemispherical part 1, the worker removes each hemispherical part 1 from the receiving groove 8 in the first loading plate 7.

[0013] S6. The worker repeats steps S2 to S5 to injection mold a sealing ring 3 onto all hemispherical parts 1.

[0014] However, although this injection mold can injection mold a sealing ring 3 on the hemispherical part 1, it still has the following technical defects:

[0015] In step S52, because the hemispherical part 1 is embedded in the receiving groove 8 of the first loading plate 7, and there are no parts on the hemispherical part 1 that allow the worker to easily pull it out, the worker cannot directly remove the hemispherical part 1 from the receiving groove 8. The worker's next operation is: the worker rotates the first base 6 180°, and then strikes the first base 6 with a wooden hammer. Under the vibration, the hemispherical part 1 falls out of the receiving groove 8, thereby obtaining the desired hemispherical part with the sealing ring 3.

[0016] However, each time the hemispherical part 1 is removed, the worker needs to rotate the first base 6 180° and strike the first base 6 with a wooden hammer to remove the hemispherical part 1 from the receiving groove 8. This not only increases the worker's workload but also reduces the time it takes to remove the hemispherical part 1 from the receiving groove 8, thereby extending the time required to inject the sealing ring 3 onto the subsequent batch of hemispherical parts 1, and thus reducing the efficiency of injecting the sealing ring 3 onto the hemispherical parts 1.

[0017] Therefore, there is an urgent need for an injection mold that can greatly reduce the workload of workers and improve the efficiency of removing hemispherical parts from the receiving slot. Utility Model Content

[0018] The purpose of this invention is to overcome the shortcomings of the prior art and provide an injection mold for injection molding a sealing ring on a hemispherical part, which greatly reduces the labor intensity of workers and improves the efficiency of removing hemispherical parts from the receiving groove.

[0019] The purpose of this utility model is achieved through the following technical solution: an injection mold for injection molding a sealing ring on a hemispherical part, which includes an upper mold B and a lower mold B. The lower mold B includes a base plate and a top plate fixed on the base plate. Multiple columns are fixed on the top surface of the top plate along its length direction. A second base is fixed between the top ends of the multiple columns. A second loading plate is embedded in the second base. Multiple receiving grooves are opened on the top surface of the second loading plate along its length direction.

[0020] Each receiving tank has through holes at the bottom that pass through the second loading plate and the second base sequentially downwards. Lifting cylinders are fixed on the bottom surface of the top plate at its left and right ends. A floating plate sleeved on the outside of the column is fixed between the working ends of the piston rods of the two lifting cylinders. Multiple lifting rods are fixed on the top surface of the floating plate. Each lifting rod is vertically opposite to each through hole and slides with the through hole.

[0021] The receiving groove matches the outer contour of the hemispherical part.

[0022] The top surface of the second loading plate is flush with the top surface of the second base.

[0023] The floating plate has multiple guide holes that correspond to the columns, and the guide holes slide with the columns.

[0024] The upper mold B includes an upper support, a pad, and a fixing plate, which are fixedly mounted together from top to bottom. A fastening plate is fixedly mounted inside the fixing plate. Multiple bosses are fixedly mounted on the bottom surface of the fastening plate, and each boss corresponds to a receiving groove. An annular groove is provided on the outside of each boss on the bottom surface of the fastening plate. Multiple injection holes B are provided between the upper support, the pad, the fixing plate, and the fastening plate. The lower end of each injection hole B is connected to each annular groove, and the upper end of each injection hole B penetrates the top surface of the upper support.

[0025] The injection mold also includes a controller, which is electrically connected to two lifting cylinders via signal lines.

[0026] This invention has the following advantages: it greatly reduces the workload of workers and improves the efficiency of removing hemispherical parts from the receiving groove. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a hemispherical part;

[0028] Figure 2 for Figure 1 Main section diagram;

[0029] Figure 3 A schematic diagram of injection molding a sealing ring within an annular groove of a hemispherical part;

[0030] Figure 4 for Figure 3 Main section diagram;

[0031] Figure 5 This is a schematic diagram of the lower mold A of an existing injection mold.

[0032] Figure 6 for Figure 5 A schematic diagram of the structure of the first loading plate in the process;

[0033] Figure 7 This is a schematic diagram of the upper mold A of an existing injection mold.

[0034] Figure 8 for Figure 7 A schematic diagram of the interlocking plate in the middle;

[0035] Figure 9 for Figure 7 A magnified view of part I;

[0036] Figure 10 A schematic diagram illustrating the installation of the upper mold A;

[0037] Figure 11 A schematic diagram showing the placement of a hemispherical part into each of the receiving slots of the first loading plate;

[0038] Figure 12 A schematic diagram showing the formation of a closed annular cavity by the annular groove of the fastening plate and the annular recess of the hemispherical part;

[0039] Figure 13 for Figure 12 A magnified view of part II;

[0040] Figure 14 This is a schematic diagram of the lower mold B of this utility model;

[0041] Figure 15 for Figure 14 A schematic diagram of the structure of the second loading plate in the middle;

[0042] Figure 16 This is a schematic diagram of the upper mold B of this utility model;

[0043] Figure 17 for Figure 16 A magnified view of part III;

[0044] Figure 18 This is a schematic diagram of the floating plate structure;

[0045] Figure 19 for Figure 18 Top view;

[0046] Figure 20 A schematic diagram illustrating the installation of the upper mold B;

[0047] Figure 21 A schematic diagram showing a worker placing a hemispherical part into each of the receiving slots on the second loading plate;

[0048] Figure 22 This is a schematic diagram showing how the annular groove of the snap-fit ​​plate of this utility model and the annular groove of the hemispherical part form a closed annular cavity.

[0049] Figure 23 for Figure 22 Enlarged view of part IV;

[0050] In the picture:

[0051] 1-Hemispherical part, 2-Annular groove, 3-Sealing ring, 4-Upper mold A, 5-Lower mold A, 6-First base, 7-First loading plate, 8-Receiving groove, 9-Upper support, 10-Pad plate, 11-Fixing plate, 12-Snap-fit ​​plate, 13-Boss, 14-Annular groove, 15-Injection hole A;

[0052] 16-Upper mold B, 17-Lower mold B, 18-Base plate, 19-Top plate, 20-Column, 21-Second base, 22-Second loading plate, 23-Through hole, 24-Lifting cylinder, 25-Floating plate, 26-Lifting rod, 27-Injection hole B. Detailed Implementation

[0053] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0054] like Figures 14-19 As shown, an injection mold for injection molding a sealing ring onto a hemispherical part includes an upper mold B16 and a lower mold B17. The lower mold B17 includes a base plate 18 and a top plate 19 fixed on the base plate 18. A plurality of columns 20 are fixed on the top surface of the top plate 19 along its length. A second base 21 is fixed between the top ends of the plurality of columns 20. A second loading plate 22 is embedded in the second base 21. The top surface of the second loading plate 22 is flush with the top surface of the second base 21. A plurality of receiving grooves 8 are formed on the top surface of the second loading plate 22 along its length. The receiving grooves 8 are matched with the outer contour of the hemispherical part 1.

[0055] Each receiving tank 8 has through holes 23 at its bottom, sequentially penetrating the second loading plate 22 and the second base 21. Lifting cylinders 24 are fixedly mounted on the bottom surface of the top plate 19 at its left and right ends. A floating plate 25, sleeved on the outside of the column 20, is fixed between the piston rods of the two lifting cylinders 24. Multiple lifting rods 26 are fixedly mounted on the top surface of the floating plate 25, each lifting rod 26 being vertically opposite to a through hole 23, and the lifting rods 26 are slidably engaged with the through holes 23. Multiple guide holes, corresponding to the columns 20, are opened within the floating plate 25, and the guide holes are slidably engaged with the columns 20.

[0056] The upper mold B16 includes an upper support 9, a pad 10, and a fixing plate 11, which are fixed together from top to bottom. A fastening plate 12 is fixed inside the fixing plate 11. Multiple bosses 13 are fixed on the bottom surface of the fastening plate 12. Each boss 13 corresponds to a receiving groove 8. An annular groove 14 is provided on the outside of each boss 13 on the bottom surface of the fastening plate 12. Multiple injection holes B27 are provided between the upper support 9, the pad 10, the fixing plate 11, and the fastening plate 12. The lower end of each injection hole B27 is connected to each annular groove 14. The upper end of each injection hole B27 penetrates the top surface of the upper support 9.

[0057] The injection mold also includes a controller, which is electrically connected to two lifting cylinders 24 via signal lines. The operator can control the extension or retraction of the piston rods of the two lifting cylinders 24 through the controller, thus facilitating the operator's operation.

[0058] The working process of this utility model is as follows:

[0059] S1. The worker fixes the upper support 9 of the upper mold B16 onto the piston rod of the press, thereby completing the installation of the upper mold B16. Figure 20 As shown, at this time, the fastening plate 12 of the upper mold B16 is directly above the second loading plate 22 of the lower mold B17, and each boss 13 on the bottom surface of the fastening plate 12 is directly above each receiving groove 8 in the second loading plate 22.

[0060] S2, the worker places a [item] into each of the receiving slots 8 of the second loading plate 22. Figures 1-2 The hemispherical part 1 shown is as follows: Figure 21 As shown, and ensure that the spherical cavity of the hemispherical part 1 faces upward, at this time, the annular groove 2 of the hemispherical part 1 and the annular groove 14 of the fastening plate 12 are exactly opposite each other vertically.

[0061] S3. The worker controls the piston rod of the press to extend downwards. The piston rod drives the upper support 9 to move downwards. The upper support 9 drives the pad 10, the fixing plate 11, and the fastening plate 12 to move downwards synchronously. The fastening plate 12 drives each of its protrusions 13 to move downwards synchronously. When the piston rod of the press extends downwards to a set distance, each of the protrusions 13 of the fastening plate 12 is embedded into the spherical cavity of each hemispherical part 1. Furthermore, the bottom surface of the fastening plate 12 contacts the top surface of the hemispherical part 1. At the same time, the annular groove 14 of the fastening plate 12 and the annular recess 2 of the hemispherical part 1 form a sealed annular cavity. Figures 22-23 As shown, the annular sealed cavity is connected to the injection hole B27;

[0062] S4. A certain amount of liquid silicone is injected into the upper port of each injection hole B27 using an injection molding machine. The liquid silicone passes through the injection hole B27, the lower port of the injection hole B27, and finally enters the sealed annular cavity. The liquid silicone fills the sealed annular cavity to form a sealing ring 3. After cooling for a period of time, a sealing ring 3 is finally injection molded on each of the multiple hemispherical parts 1. Figures 3-4 As shown;

[0063] S5. The specific steps for removing the hemispherical part 1 with the injection-molded sealing ring 3 are as follows:

[0064] S51, control the piston rod of the press to retract upward, the piston rod drives the upper support 9 to move upward, the upper support 9 drives the pad 10, the fixing plate 11 and the fastening plate 12 to move upward synchronously, the fastening plate 12 drives each boss 13 to move upward synchronously, and the boss 13 exits from the ball cavity of the hemispherical part 1.

[0065] S52. Control the piston rods of the two lifting cylinders 24 to extend upwards. The piston rods drive the floating plate 25 to move upwards. The floating plate 25 drives each lifting rod 26 on it to move upwards synchronously. The lifting rods 26 gradually push the hemispherical part 1 in the receiving groove 8 upwards. When the piston rod of the lifting cylinder 24 is fully extended, the hemispherical part 1 is just pushed out of the receiving groove 8. At this time, the worker takes away the hemispherical part 1 that has been pushed out.

[0066] S6. The worker repeats steps S2 to S5 to injection mold a sealing ring 3 onto all hemispherical parts 1.

[0067] In step S5, the worker only needs to control the piston rods of the two lifting cylinders 24 to extend upwards, which will push the hemispherical part 1 out of the receiving groove 8 through the lifting rod 26, thus making it convenient for the worker to remove the hemispherical part 1. Therefore, this injection mold, compared to... Figures 5-13 The injection mold shown allows the hemispherical part 1 to be removed from the receiving groove 8 without the need for the worker to rotate the first base 6 180° or strike the first base 6 with a wooden hammer. This not only greatly reduces the worker's workload but also shortens the removal time of the hemispherical part 1, thereby shortening the time required to inject the sealing ring 3 onto the subsequent batch of hemispherical parts 1, and thus greatly improving the efficiency of injecting the sealing ring 3 onto the hemispherical parts 1.

Claims

1. An injection mold for injection molding a sealing ring onto a hemispherical part, characterized in that: It includes an upper mold B (16) and a lower mold B (17). The lower mold B (17) includes a base plate (18) and a top plate (19) fixed on the base plate (18). Multiple columns (20) are fixed on the top surface of the top plate (19) along its length. A second base (21) is fixed between the top ends of the multiple columns (20). A second loading plate (22) is embedded in the second base (21). Multiple receiving grooves (8) are opened on the top surface of the second loading plate (22) along its length. Each receiving trough (8) has a through hole (23) at the bottom that passes through the second loading plate (22) and the second base (21) sequentially downwards. A lifting cylinder (24) is fixed on the bottom surface of the top plate (19) and at its left and right ends. A floating plate (25) sleeved on the outside of the column (20) is fixed between the working ends of the piston rods of the two lifting cylinders (24). Multiple lifting rods (26) are fixed on the top surface of the floating plate (25). Each lifting rod (26) is vertically opposed to each through hole (23), and the lifting rod (26) slides with the through hole (23).

2. The injection mold for injection molding a sealing ring on a hemispherical part according to claim 1, characterized in that: The receiving groove (8) matches the outer contour of the hemispherical part (1).

3. The injection mold for injection molding a sealing ring on a hemispherical part according to claim 1, characterized in that: The top surface of the second loading plate (22) is flush with the top surface of the second base (21).

4. The injection mold for injection molding a sealing ring onto a hemispherical part according to claim 1, characterized in that: The floating plate (25) has multiple guide holes that correspond to the column (20) respectively, and the guide holes slide with the column (20).

5. The injection mold for injection molding a sealing ring on a hemispherical part according to claim 1, characterized in that: The upper mold B (16) includes an upper support (9), a pad (10) and a fixing plate (11) fixedly mounted together from top to bottom. A fastening plate (12) is fixedly mounted inside the fixing plate (11). Multiple bosses (13) are fixedly mounted on the bottom surface of the fastening plate (12). Each boss (13) corresponds to a corresponding receiving groove (8). Each boss (13) has an annular groove (14) on the bottom surface of the fastening plate (12). Multiple injection holes B (27) are opened between the upper support (9), the pad (10), the fixing plate (11) and the fastening plate (12). The lower end of each injection hole B (27) is connected to each annular groove (14). The upper end of each injection hole B (27) penetrates the top surface of the upper support (9).

6. The injection mold for injection molding a sealing ring on a hemispherical part according to claim 1, characterized in that: The injection mold also includes a controller, which is electrically connected to two lifting cylinders (24) via signal lines.

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