Injection molding head mechanism for injection molding equipment

Abstract

The invention relates to the technical field of injection molding, in particular to an injection molding head mechanism for injection molding equipment, which comprises a base, the top of the base is provided with a feeding pipe, the surface of the feeding pipe is provided with a heating ring, the end part of the feeding pipe is provided with a discharge port, and the end part of the feeding pipe is provided with a ring groove; an arc-shaped hole is formed in the surface of the jacking block, an inserting block is arranged at the end of the jacking block, a third swing shaft is arranged on the surface of the jacking block, an arc-shaped rod is arranged at the end of the third swing shaft, an extension rod is arranged at the end of the third swing shaft, and a tooth ring is arranged at the end of the extension rod; the device has the beneficial effects that due to the fact that an arc-shaped hole is arc-shaped, an arc-shaped rod is inserted into the arc-shaped hole after being changed, raw materials remaining in the arc-shaped hole are pushed out, after a jacking block rotates again, the arc-shaped rod is pulled out of the arc-shaped hole under pulling of an elastic plate, and no solidified raw materials are left in the arc-shaped hole; and when being used again, the water cannot be injected into the mold.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and specifically relates to an injection head mechanism for an injection molding device. Background Art

[0002] A plastic processing method in which plastic is plasticized in a heating barrel of an injection molding machine and then injected into a cavity of a closed mold by a plunger or a reciprocating screw to form a product.

[0003] In the prior art, the patent number is CN119116257B, and the name is an injection molding device for processing a DC brushless cooling fan, which relates to the technical field of injection molding devices. It includes a frame, an injection molding mechanism, and a heat preservation component. The injection molding mechanism includes a linear guide rail. An injection molding main machine is slidably installed on the top of the linear guide rail. A servo motor is installed on the outer surface of the injection molding main machine near the hydraulic cylinder. An injection cylinder is installed at one end of the injection molding main machine away from the servo motor. A spiral blade is rotatably installed in the middle of the inner cavity of the injection cylinder. A conical guide hopper is fixedly installed at the edge of the spiral surface of the spiral blade near the injection molding main machine. The heat preservation component includes a heat preservation cylinder. A first annular pipe is installed in the inner cavity of the heat preservation cylinder near the discharge end of the injection cylinder. A second annular pipe is installed at one end of the inner cavity of the heat preservation cylinder away from the first annular pipe. This injection molding device for processing a DC brushless cooling fan achieves the effect of preventing material pulling, guides the granular material, is not easy to jam, and performs heat preservation, which is safe and reliable.

[0004] However, since the injection head needs to be pushed into the interior of the mold, the injection head lacks a heat preservation structure. When a group of injections is completed, the raw material remaining in the injection head will solidify, resulting in the solidified raw material being injected into the mold during the next injection, affecting the injection effect and easily causing blockage of the injection hole of the mold. Summary of the Invention

[0005] The purpose of the present invention is to provide an injection head mechanism for an injection molding device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An injection head mechanism for an injection molding device, including:

[0007] A base, a feeding pipe is arranged on the top of the base, a heating ring is arranged on the surface of the feeding pipe, a discharge port is opened at the end of the feeding pipe, and a ring groove is arranged at the end of the feeding pipe;

[0008] A holding block, an arc-shaped hole is arranged on the surface of the holding block, a plug-in block is arranged at the end of the holding block, a third swing shaft is arranged on the surface of the holding block, an arc-shaped rod is arranged at the end of the third swing shaft, an extension rod is arranged at the end of the third swing shaft, and a tooth ring is arranged at the end of the extension rod.

[0009] Preferably, the feeding pipe can move on the top of the base. A mold is arranged on one side of the feeding pipe. An injection port is opened at the end of the mold. A notch is opened on the surface of the injection port. A heat insulation block is fixed on the surface of the heating ring. A first stepping motor is fixed on the surface of the heat insulation block. An extension plate is fixed on the surface of the base. A support plate is fixed on the surface of the extension plate.

[0010] Preferably, a second rotating shaft is arranged at the end of the first stepping motor. The first stepping motor drives the second rotating shaft to rotate. A fixing ring is fixed at the other end of the second rotating shaft. A ring groove is opened on the surface of the fixing ring. A rotating ring is arranged in the ring groove. The rotating ring can rotate in the ring groove. A plugging hole is opened on the surface of the ring groove. A plugging rod is plugged in the plugging hole. The plugging rod can telescopically move inside the plugging hole. A telescopic rod is plugged at the end of the second rotating shaft. The telescopic rod can telescopically move inside the second rotating shaft.

[0011] Preferably, the other end of the telescopic rod is fixed with a first rotating shaft. The first rotating shaft moves along with the telescopic rod. A spring is connected between the first rotating shaft and the second rotating shaft. The spring has a pulling force on the first rotating shaft, so that the first rotating shaft approaches the end of the second rotating shaft. The plugging rod is fixed at the end of the first rotating shaft. The first rotating shaft moves along with the plugging rod.

[0012] Preferably, a first swinging shaft is fixed on the surface of the first rotating shaft. A holding block is fixed at the end of the first swinging shaft. Multiple groups of first swinging shafts are arranged. A second swinging shaft is fixed on the surface of the first rotating shaft. A blade is fixed on the surface of the second swinging shaft. Multiple groups of second swinging shafts are arranged. And the holding block and the blade rotate along with the first rotating shaft.

[0013] Preferably, a second stepping motor is fixed on the surface of the support plate. A gear is arranged at the end of the second stepping motor. The second stepping motor drives the gear to rotate. A third rotating shaft is arranged on the surface of the holding block. The third rotating shaft can rotate on the surface of the holding block. A third swinging shaft is fixed on the surface of the third rotating shaft. The third swinging shaft swings along with the third rotating shaft. One end of an elastic plate is connected to the surface of the third swinging shaft, and the other end of the elastic plate is connected to the surface of the holding block. The elastic plate has a pushing force on the third swinging shaft. An arc-shaped rod and an extension rod are fixed at the end of the surface of the third swinging shaft. The arc-shaped rod swings along with the third swinging shaft. The extension rod swings along with the third swinging shaft.

[0014] Preferably, a tooth ring is fixed at the end of the extension rod. Teeth are arranged on the surface of the tooth ring. The teeth are inclined. And the teeth on the surface of the gear are inclined. After the holding block rotates along with the first rotating shaft, the tooth ring swings along with the holding block. The teeth on the surface of the tooth ring can mesh with the teeth on the surface of the gear. After the gear rotates, it drives the tooth ring to swing.

[0015] Preferably, a plug-in block is fixed on the surface of the holding block. An arc-shaped hole is formed inside the plug-in block and the holding block. The arc-shaped hole is arc-shaped. After the arc-shaped rod swings along with the third swing shaft, it can be inserted into the arc-shaped hole. A spherical ball is arranged at the end of the arc-shaped rod, and the diameter of the spherical ball is the same as that of the arc-shaped hole.

[0016] Preferably, a sealing ring is fixed on the surface of the holding block. When the holding block swings to the end of the feeding pipe, the end of the arc-shaped hole is aligned with the discharge port at the end of the feeding pipe, and the raw material in the discharge port can enter the arc-shaped hole inside the holding block. After the holding block moves along with the feeding pipe, the plug-in block on the surface of the holding block is inserted into the injection mold opening, and the arc-shaped rod is located in the notch. The sealing ring on the surface of the holding block is held in the annular groove at the end of the feeding pipe.

[0017] Preferably, the inside of the feeding pipe is filled with raw material. The raw material inside the feeding pipe is heated by a heating ring to make the raw material in a liquid state. A screw is arranged inside the feeding pipe, and the screw inside the feeding pipe pushes the raw material inside the feeding pipe to move. The raw material inside the feeding pipe is discharged through the discharge port. Since the holding block holds at the end of the feeding pipe, the raw material discharged from the discharge port enters the arc-shaped hole inside the holding block.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The teeth on the surface of the tooth ring proposed by the present invention are engaged with the teeth on the surface of the gear. The teeth on the surface of the tooth ring and the gear are both inclined, which is convenient for the engagement of the two groups of teeth during the rotation of the tooth ring. The second stepping motor drives the gear to rotate, the rotation of the gear drives the tooth ring to swing, and the tooth ring drives the arc-shaped rod to swing along the third rotation shaft through the extension rod. Since the arc-shaped hole is arc-shaped, after the arc-shaped rod changes, it is inserted into the arc-shaped hole, and the raw material remaining in the arc-shaped hole is pushed out. Moreover, when the holding block rotates again, under the pulling of the elastic plate, the arc-shaped rod is pulled out from the arc-shaped hole, so that no solidified raw material remains in the arc-shaped hole and will not be injected into the mold when used again. Description of the Drawings

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the present invention from another perspective.

[0022] Figure 3 It is a schematic diagram of the mold structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the feeding pipe structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the feeding pipe of the present invention from another perspective.

[0025] Figure 6 This is a schematic structural diagram of the first rotating shaft of the present invention.

[0026] Figure 7 This is a schematic enlarged partial structural diagram of the first rotating shaft of the present invention.

[0027] Figure 8 is Figure 4 an enlarged schematic diagram of the structure at position A in

[0028] Figure 9 This is a schematic structural diagram of the holding block of the present invention.

[0029] Figure 10 This is a schematic sectional structural diagram of the holding block of the present invention.

[0030] In the figure: base 1, mold 2, heating ring 3, feeding pipe 4, notch 5, injection port 6, heat insulation block 7, first stepping motor 8, support plate 9, holding block 10, first swing shaft 11, first rotating shaft 12, second swing shaft 13, blade 14, insertion rod 15, spring 16, telescopic rod 17, annular groove 18, second rotating shaft 19, insertion hole 20, rotating ring 21, fixed ring 22, second stepping motor 23, gear 24, toothed ring 25, arc rod 26, elastic plate 27, third swing shaft 28, third rotating shaft 29, extension rod 30, insertion block 31, arc hole 32, sealing ring 33, extension plate 34, discharge port 35, annular groove 36. Detailed implementation manners

[0031] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0032] Please refer to Figures 1 to 10 , the present invention provides a technical solution:

[0033] Embodiment 1: An injection head mechanism for an injection molding device, comprising: a base 1, a feeding pipe 4 is arranged on the top of the base 1, a heating ring 3 is arranged on the surface of the feeding pipe 4, a discharge port 35 is opened at the end of the feeding pipe 4, and an annular groove 36 is arranged at the end of the feeding pipe 4; a holding block 10, an arc-shaped hole 32 is arranged on the surface of the holding block 10, a plug-in block 31 is arranged at the end of the holding block 10, a third swing shaft 28 is arranged on the surface of the holding block 10, an arc-shaped rod 26 is arranged at the end of the third swing shaft 28, an extension rod 30 is arranged at the end of the third swing shaft 28, a tooth ring 25 is arranged at the end of the extension rod 30, a second stepping motor 23 drives a gear 24 to rotate, the rotation of the gear 24 drives the tooth ring 25 to swing, the tooth ring 25 drives the arc-shaped rod 26 to swing along the third rotation shaft 29 through the extension rod 30, and since the arc-shaped hole 32 is arc-shaped, the arc-shaped rod 26 is inserted into the arc-shaped hole 32 after changing, and the raw material remaining in the arc-shaped hole 32 is pushed out.

[0034] Embodiment 2: On the basis of Embodiment 1, the feeding pipe 4 can move on the top of the base 1. A mold 2 is arranged on one side of the feeding pipe 4. An injection port 6 is opened at the end of the mold 2. A notch 5 is opened on the surface of the injection port 6. A heat insulation block 7 is fixed on the surface of the heating ring 3. A first stepping motor 8 is fixed on the surface of the heat insulation block 7. An extension plate 34 is fixed on the surface of the base 1. A support plate 9 is fixed on the surface of the extension plate 34. A second stepping motor 23 is fixed on the surface of the support plate 9. A gear 24 is arranged at the end of the second stepping motor 23. The second stepping motor 23 drives the gear 24 to rotate. A third rotating shaft 29 is arranged on the surface of the holding block 10. The third rotating shaft 29 can rotate on the surface of the holding block 10. A third swing shaft 28 is fixed on the surface of the third rotating shaft 29. The third swing shaft 28 swings along with the third rotating shaft 29. One end of an elastic plate 27 is connected to the surface of the third swing shaft 28, and the other end of the elastic plate 27 is connected to the surface of the holding block 10. The elastic plate 27 has a thrust on the third swing shaft 28. An arc-shaped rod 26 and an extension rod 30 are fixed at the end of the surface of the third swing shaft 28. The arc-shaped rod 26 swings along with the third swing shaft 28, and the extension rod 30 swings along with the third swing shaft 28. A tooth ring 25 is fixed at the end of the extension rod 30. Teeth are arranged on the surface of the tooth ring 25. The teeth are inclined, and the teeth on the surface of the gear 24 are also inclined. After the holding block 10 rotates along with the first rotating shaft 12, the tooth ring 25 swings along with the holding block 10. The teeth on the surface of the tooth ring 25 can mesh with the teeth on the surface of the gear 24. After the gear 24 rotates, it drives the tooth ring 25 to swing. A plug-in block 31 is fixed on the surface of the holding block 10. An arc-shaped hole 32 is opened inside the plug-in block 31 and the holding block 10. The arc-shaped hole 32 is arc-shaped. After the arc-shaped rod 26 swings along with the third swing shaft 28, it can be inserted into the arc-shaped hole 32. And a spherical ball is arranged at the end of the arc-shaped rod 26. The diameter of the spherical ball is the same as the diameter of the arc-shaped hole 32. A sealing ring 33 is fixed on the surface of the holding block 10. When the holding block 10 swings to the end of the feeding pipe 4, the end of the arc-shaped hole 32 is aligned with the discharge port 35 at the end of the feeding pipe 4. The raw material in the discharge port 35 can enter the arc-shaped hole 32 inside the holding block 10. And after the holding block 10 moves along with the feeding pipe 4, the plug-in block 31 on the surface of the holding block 10 is inserted into the injection port 6, and the arc-shaped rod 26 is located in the notch 5. The sealing ring 33 on the surface of the holding block 10 is held in the annular groove 36 at the end of the feeding pipe 4. The inside of the feeding pipe 4 is filled with raw material. The raw material inside the feeding pipe 4 is heated by the heating ring 3 to make the raw material in a liquid state. A screw is arranged inside the feeding pipe 4. The screw inside the feeding pipe 4 pushes the raw material inside the feeding pipe 4 to move. The raw material inside the feeding pipe 4 is discharged through the discharge port 35. Since the holding block 10 holds at the end of the feeding pipe 4, the raw material discharged from the discharge port 35 enters the arc-shaped hole 32 inside the holding block 10. After the arc-shaped rod 26 swings and is inserted into the arc-shaped hole 32, the raw material remaining in the arc-shaped hole 32 is pushed out.And when the holding block 10 rotates again, it is pulled by the elastic plate 27 to extract the arc-shaped rod 26 from the arc-shaped hole 32, so that no solidified raw materials remain in the arc-shaped hole 32.

[0035] A second rotating shaft 19 is provided at the end of the first stepping motor 8. The first stepping motor 8 drives the second rotating shaft 19 to rotate. A fixing ring 22 is fixed at the other end of the second rotating shaft 19. A ring groove 18 is formed on the surface of the fixing ring 22. A rotating ring 21 is arranged in the ring groove 18. The rotating ring 21 can rotate in the ring groove 18. A plugging hole 20 is formed on the surface of the ring groove 18. A plugging rod 15 is plugged in the plugging hole 20. The plugging rod 15 can telescopically move inside the plugging hole 20. A telescopic rod 17 is plugged at the end of the second rotating shaft 19. The telescopic rod 17 can telescopically move inside the second rotating shaft 19. The second rotating shaft 19 drives the holding block 10 and the second swing shaft 13 to rotate. The blade 14 on the surface of the second swing shaft 13 cleans the raw materials at the end of the feeding pipe 4, and another set of holding blocks 10 is replaced to hold the end of the feeding pipe 4.

[0036] The other end of the telescopic rod 17 is fixed with a first rotating shaft 12. The first rotating shaft 12 moves along with the telescopic rod 17. A spring 16 is connected between the first rotating shaft 12 and the second rotating shaft 19. The spring 16 has a pulling force on the first rotating shaft 12, so that the first rotating shaft 12 approaches the end of the second rotating shaft 19. The plugging rod 15 is fixed at the end of the first rotating shaft 12. The first rotating shaft 12 moves along with the plugging rod 15. A first swing shaft 11 is fixed on the surface of the first rotating shaft 12. A holding block 10 is fixed at the end of the first swing shaft 11. A plurality of groups of first swing shafts 11 are provided. A second swing shaft 13 is fixed on the surface of the first rotating shaft 12. A blade 14 is fixed on the surface of the second swing shaft 13. A plurality of groups of second swing shafts 13 are provided. And the holding block 10 and the blade 14 rotate along with the first rotating shaft 12.

[0037] The feeding pipe 4 moves on the top of the base 1, so that the end of the feeding pipe 4 approaches the mold 2. The holding block 10 is located at the end of the feeding pipe 4. A heating ring 3 is arranged outside the feeding pipe 4, and the heating ring 3 heats the raw materials. The first swing shaft 11 at the end of the holding block 10 is connected to the first rotating shaft 12. The telescopic rod 17 at the end of the first rotating shaft 12 is inserted into the inside of the second rotating shaft 19. The insertion rod 15 on the surface of the first rotating shaft 12 is inserted into the insertion hole 20, and the spring 16 at the end of the first rotating shaft 12 is connected to the rotating ring 21. The rotating ring 21 can rotate in the ring groove 18, so that the first rotating shaft 12 approaches the second rotating shaft 19 under the pull of the spring 16, and the holding block 10 is held at the end of the feeding pipe 4. A sealing ring 33 is arranged on the surface of the holding block 10. A ring groove 36 is opened at the end of the feeding pipe 4, and the sealing ring 33 is stuck in the ring groove 36. The raw materials inside the feeding pipe 4 enter the arc-shaped hole 32 inside the holding block 10 through the discharge port 35. The insertion block 31 is fixed on the surface of the holding block 10, and the insertion block 31 is inserted into the injection port 6 on the surface of the mold 2. The raw materials in the arc-shaped hole 32 are injected into the inside of the mold 2. After injection molding, the second rotating shaft 19 is driven to rotate by the first stepping motor 8, so that the second rotating shaft 19 drives the holding block 10 and the second swing shaft 13 to rotate. The blade 14 on the surface of the second swing shaft 13 cleans the raw materials at the end of the feeding pipe 4, and another set of holding blocks 10 is replaced to hold at the end of the feeding pipe 4. When the used holding block 10 rotates this time, the teeth on the surface of the tooth ring 25 are engaged with the teeth on the surface of the gear 24. The teeth on the surfaces of the tooth ring 25 and the gear 24 are both inclined, which is convenient for the engagement of the two sets of teeth during the rotation of the tooth ring 25. The second stepping motor 23 drives the gear 24 to rotate, and the rotation of the gear 24 drives the tooth ring 25 to swing. The tooth ring 25 drives the arc-shaped rod 26 to swing along the third rotating shaft 29 through the extension rod 30. Since the arc-shaped hole 32 is arc-shaped, the arc-shaped rod 26 is inserted into the arc-shaped hole 32 after swinging, and the raw materials remaining in the arc-shaped hole 32 are pushed out. And when the holding block 10 rotates again, the arc-shaped rod 26 is pulled out of the arc-shaped hole 32 under the pull of the elastic plate 27, so that no solidified raw materials remain in the arc-shaped hole 32 and will not be injected into the inside of the mold 2 when used again.

[0038] Although the above describes the illustrative specific embodiments of the present application for the convenience of those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all the application creations using the concept of the present application are within the scope of protection.

Claims

1. An injection head mechanism for an injection molding device, characterized in that: Comprising: A base (1), a feeding pipe (4) is arranged at the top of the base (1), a heating ring (3) is arranged on the surface of the feeding pipe (4), a discharge port (35) is opened at the end of the feeding pipe (4), and an annular groove (36) is arranged at the end of the feeding pipe (4); A holding block (10), an arc-shaped hole (32) is arranged on the surface of the holding block (10), a plug-in block (31) is arranged at the end of the holding block (10), a third swing shaft (28) is arranged on the surface of the holding block (10), an arc-shaped rod (26) is arranged at the end of the third swing shaft (28), an extension rod (30) is arranged at the end of the third swing shaft (28), and a toothed ring (25) is arranged at the end of the extension rod (30).

2. The injection head mechanism for an injection molding device according to claim 1, characterized in that: The feeding pipe (4) can move on the top of the base (1), a mold (2) is arranged on one side of the feeding pipe (4), an injection port (6) is opened at the end of the mold (2), a notch (5) is opened on the surface of the injection port (6), a heat insulation block (7) is fixed on the surface of the heating ring (3), a first stepping motor (8) is fixed on the surface of the heat insulation block (7), an extension plate (34) is fixed on the surface of the base (1), and a support plate (9) is fixed on the surface of the extension plate (34).

3. The injection head mechanism for an injection molding device according to claim 2, wherein: A second rotating shaft (19) is arranged at the end of the first stepping motor (8), the first stepping motor (8) drives the second rotating shaft (19) to rotate, a fixing ring (22) is fixed at the other end of the second rotating shaft (19), an annular groove (18) is opened on the surface of the fixing ring (22), a rotating ring (21) is arranged in the annular groove (18), the rotating ring (21) can rotate in the annular groove (18), a plug-in hole (20) is opened on the surface of the annular groove (18), a plug-in rod (15) is inserted in the plug-in hole (20), the plug-in rod (15) can telescopically move inside the plug-in hole (20), and a telescopic rod (17) is inserted at the end of the second rotating shaft (19), and the telescopic rod (17) can telescopically move inside the second rotating shaft (19).

4. An injection head mechanism for an injection molding device according to claim 3, characterized in that: The other end of the telescopic rod (17) is fixed with a first rotating shaft (12), the first rotating shaft (12) moves along with the telescopic rod (17), a spring (16) is connected between the first rotating shaft (12) and the second rotating shaft (19), the spring (16) has a pulling force on the first rotating shaft (12), so that the end of the first rotating shaft (12) is close to the second rotating shaft (19), the plug-in rod (15) is fixed at the end of the first rotating shaft (12), and the first rotating shaft (12) moves along with the plug-in rod (15).

5. The injection head mechanism for an injection molding device according to claim 4, characterized in that: A first swing shaft (11) is fixed on the surface of the first rotating shaft (12), a holding block (10) is fixed at the end of the first swing shaft (11), multiple groups of first swing shafts (11) are arranged, a second swing shaft (13) is fixed on the surface of the first rotating shaft (12), a blade (14) is fixed on the surface of the second swing shaft (13), multiple groups of second swing shafts (13) are arranged, and the holding block (10) and the blade (14) rotate along with the first rotating shaft (12).

6. The injection head mechanism for an injection molding device according to claim 5, characterized in that: A second stepping motor (23) is fixed on the surface of the support plate (9). A gear (24) is arranged at the end of the second stepping motor (23). The second stepping motor (23) drives the gear (24) to rotate. A third rotating shaft (29) is arranged on the surface of the holding block (10). The third rotating shaft (29) can rotate on the surface of the holding block (10). A third swinging shaft (28) is fixed on the surface of the third rotating shaft (29). The third swinging shaft (28) swings along with the third rotating shaft (29). One end of an elastic plate (27) is connected to the surface of the third swinging shaft (28), and the other end of the elastic plate (27) is connected to the surface of the holding block (10). The elastic plate (27) has a thrust on the third swinging shaft (28). An arc-shaped rod (26) and an extension rod (30) are fixed at the end of the surface of the third swinging shaft (28). The arc-shaped rod (26) swings along with the third swinging shaft (28), and the extension rod (30) swings along with the third swinging shaft (28).

7. The injection head mechanism for an injection molding device according to claim 6, characterized in that: A tooth ring (25) is fixed at the end of the extension rod (30). Teeth are arranged on the surface of the tooth ring (25). The teeth are inclined, and the teeth on the surface of the gear (24) are also inclined. After the holding block (10) rotates along with the first rotating shaft (12), the tooth ring (25) swings along with the holding block (10). The teeth on the surface of the tooth ring (25) can mesh with the teeth on the surface of the gear (24). After the gear (24) rotates, it drives the tooth ring (25) to swing.

8. The injection head mechanism for an injection molding device according to claim 7, characterized in that: A plug-in block (31) is fixed on the surface of the holding block (10). An arc-shaped hole (32) is formed inside the plug-in block (31) and the holding block (10). The arc-shaped hole (32) is arc-shaped. After the arc-shaped rod (26) swings along with the third swinging shaft (28), it can be inserted into the arc-shaped hole (32). A spherical ball is arranged at the end of the arc-shaped rod (26), and the diameter of the spherical ball is the same as that of the arc-shaped hole (32).

9. The injection head mechanism for an injection molding device according to claim 8, wherein: A sealing ring (33) is fixed on the surface of the holding block (10). When the holding block (10) swings to the end of the feeding pipe (4), the end of the arc-shaped hole (32) is aligned with the discharge port (35) at the end of the feeding pipe (4). The raw material in the discharge port (35) can enter the arc-shaped hole (32) inside the holding block (10). After the holding block (10) moves along with the feeding pipe (4), the plug-in block (31) on the surface of the holding block (10) is inserted into the injection port (6), and the arc-shaped rod (26) is located in the notch (5). The sealing ring (33) on the surface of the holding block (10) is held in the annular groove (36) at the end of the feeding pipe (4).

10. The injection head mechanism for an injection molding device according to claim 9, characterized in that: The inside of the feeding pipe (4) is filled with raw material. The raw material inside the feeding pipe (4) is heated by the heating ring (3) so that the raw material becomes liquid. A screw is arranged inside the feeding pipe (4). The screw inside the feeding pipe (4) pushes the raw material inside the feeding pipe (4) to move. The raw material inside the feeding pipe (4) is discharged through the discharge port (35). Since the holding block (10) holds the end of the feeding pipe (4), the raw material discharged from the discharge port (35) enters the arc-shaped hole (32) inside the holding block (10).

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