An adjustable injection mold that facilitates molding

Abstract

The application discloses a convenient-to-mold adjustable injection mold, which comprises a top plate, a bottom plate, an upper mold, a lower mold, a molding inner cavity, an injection port, a cooling runner, a medium introduction hole and a self-locking medium introduction unit. The application has the following advantages and effects: the self-locking medium introduction unit can introduce the cooling medium into the medium introduction hole, and the medium in the cooling runner can be prevented from leaking through the self-locking mode; in this way, the medium can be temporarily stored in the cooling runner, the medium can fully absorb heat, the utilization rate of the medium is improved, the cost is reduced, and the resource utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of injection molds, and in particular to an adjustable injection mold that facilitates molding. Background Technology

[0002] Injection molds are tools used to produce plastic products; they are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used to mass-produce certain complex-shaped parts. Specifically, it refers to injecting heated and molten plastic into the mold cavity under high pressure by an injection molding machine, and obtaining the molded product after cooling and solidification.

[0003] Chinese Patent Application No. CN201921717807.1 discloses an injection mold with easy heat dissipation, including a top plate, a bottom plate, a lower mold, and an upper mold, and also includes a base. Two oppositely distributed side plates are installed on the top surface of the base. The injection mold is installed on the top surface of the base through the bottom plate and is located inside the two side plates. Cooling fans are installed on the opposite sides of the two side plates respectively. Liquid inlet pipes and liquid outlet pipes are installed on the two sides of the upper mold respectively. Cooling channels communicating with both liquid inlet pipes and liquid outlet pipes are opened in the upper mold.

[0004] The aforementioned patent, through its cooling fan and cooling channels, can simultaneously cool the mold from both the outside and inside, resulting in high cooling efficiency and high molding efficiency of the plastic parts.

[0005] The aforementioned patent uses cooling water as the cooling medium. The cooling process is as follows: cooling water is injected into the cooling channel through an external water pipe connected to the inlet pipe. After flowing through the cooling channel, the cooling water exits through the outlet pipe, cooling the injection mold and then solidifying. Therefore, the cooling channel does not store cooling water; the cooling water flows through the cooling channel only once and then exits. Actual investigations have revealed that for some low-temperature molten materials, after the cooling water flows through the cooling channel once, it often does not reach the temperature threshold and still has a cooling effect; thus, the utilization rate of the cooling water is very low.

[0006] Therefore, it is necessary to improve the utilization rate of the cooling medium in order to reduce costs and improve resource utilization. Summary of the Invention

[0007] The purpose of this invention is to provide an adjustable injection mold that is easy to mold, so as to solve the problems mentioned in the background art.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0009] An adjustable injection mold for easy molding includes a top plate, a bottom plate, an upper mold, and a lower mold. The bottom plate serves as a load-bearing structure placed on a platform. The lower mold is fixed to the upper end face of the bottom plate, and the upper mold is fixed to the lower end face of the top plate. The upper mold is located directly above the lower mold and can move relative to or away from the lower mold. When the upper mold and the lower mold are in contact, a molding cavity is formed between them. The upper end face of the top plate has an injection port communicating with the molding cavity.

[0010] The upper mold is provided with cooling channels arranged circumferentially inside;

[0011] The upper mold has a horizontally penetrating medium inlet hole on its left inner wall, and the right end of the medium inlet hole is connected to the cooling channel. The upper mold has a self-locking medium inlet unit installed on its left outer wall. The self-locking medium inlet unit can introduce cooling medium into the medium inlet hole, and the self-locking medium inlet unit can prevent leakage of the medium in the cooling channel by self-locking.

[0012] A further configuration is as follows: the self-locking medium introduction unit includes an external seat fixed to the left outer wall of the upper mold. The external seat is provided with a first connecting channel, a second connecting channel, a vertical sealing rod, and a drive spring. The second connecting channel is used to receive cooling medium introduced from the outside. The first connecting channel is in communication with the medium introduction hole. The external seat has a vertical sealing hole that communicates with the first connecting channel and the second connecting channel. The vertical sealing rod slides vertically in the vertical sealing hole. The drive spring is located at the upper end of the vertical sealing rod and provides a downward driving force for the vertical sealing rod. The vertical sealing rod can maintain the state of cutting off the first connecting channel and the second connecting channel.

[0013] A further configuration is as follows: the first connecting channel, the second connecting channel, and the vertical sealing hole have an intersection area; an embedded sealing seat is fixedly installed inside the external seat; the embedded sealing seat extends into the intersection area; the lower end of the vertical sealing rod has an inclined sealing contact surface on the right side; under the drive of the driving spring, the lower end of the vertical sealing rod extends into the intersection area; and the sealing contact surface abuts against the embedded sealing seat to cut off the first connecting channel and the second connecting channel.

[0014] A further feature is that a notch is provided at the junction of the embedded sealing seat and the sealing contact surface, and a sealing filler is provided inside the embedded sealing seat. The sealing filler will partially protrude from the notch and then fit tightly against the sealing contact surface to improve the sealing performance.

[0015] A further configuration is as follows: two adhesive segments are fixedly disposed on the sealing block, and the two adhesive segments are adhered to the embedded sealing seat; the embedded sealing seat has a vertical extrusion inner hole, and an extrusion block, an upper top block, and an inner spring are arranged sequentially from top to bottom in the extrusion inner hole; the upper end of the upper top block has an upper pointed tip extending into the bottom of the extrusion block, and the lower end has a recessed groove; the upper end of the inner spring extends into the recessed groove; a first screw is screwed into the bottom of the extrusion inner hole, and the lower end of the inner spring is connected to the first screw; the extrusion block will press the sealing block upward under the push of the inner spring, so that the sealing block can better adhere to the sealing contact surface.

[0016] A further setting is as follows: the upper end of the vertical sealing pressure rod is fixedly provided with an upper plate by a second screw, a square block is fixedly provided on the inner right side of the external seat, and a flexible pad is fixedly provided on the upper end of the square block. The flexible pad can contact the upper plate to play a buffering role, and the flexible pad can also contact the upper plate to limit the vertical sealing pressure rod.

[0017] The square block, in conjunction with the inner left side wall of the outer seat, forms the vertical sealing hole. The square block is located above the embedded sealing seat, and the two form the first connecting channel.

[0018] A further feature is that the upper end of the external base is detachably covered with an upper cover plate by a third screw, and a movable area with a gap is formed between the upper cover plate and the upper plate. The drive spring is placed in the movable area, and the upper end of the upper cover plate has an inwardly recessed surface for the lower end of the drive spring to abut.

[0019] A further setting is as follows: a follower block is fixedly installed on the left side of the vertical sealing pressure rod, the upper end of the follower block is in contact with the upper plate, and a spaced movable area is formed between the follower block and the external seat. When the upper plate contacts the square block, the movable area still exists.

[0020] The left side of the external base is detachably covered by a side cover plate via a fourth screw. The side cover plate and the external base form a main connecting channel. A turntable with a circular cross-section is rotatably arranged between the side cover plate and the external base. The turntable divides the main connecting channel to form a third connecting channel and the second connecting channel located above and below the turntable, respectively.

[0021] The third connecting passage is connected to the activity area, but it is separated from the second connecting passage.

[0022] A further setting is as follows: the turntable has an independent first inner hole and a second inner hole, the cross-sectional shape of the first inner hole and the second inner hole is arc-shaped, one end of the first inner hole and one end of the second inner hole are sealed by a sealing block, the other end of the first inner hole serves as the air supply end, and the other end of the second inner hole serves as the exhaust end.

[0023] The turntable has a medium inlet hole connected to the first inner hole, and an air inlet is provided at the end of the medium inlet hole. The air inlet is connected to an external air pump through a pipe fitting. The turntable also has a medium outlet hole connected to the second inner hole, and an exhaust port is provided at the end of the medium outlet hole. The exhaust port is connected to an external air pump through a pipe fitting.

[0024] In its initial state, the turntable's second channel is connected to the air supply end, and the third channel is connected to the air exhaust end. When the turntable is rotated 180 degrees, the second channel will connect to the air exhaust end, and the third channel will connect to the air supply end.

[0025] A stepper motor that provides driving force to the turntable is fixedly installed on the inner side of the turntable, and the output shaft of the stepper motor is connected to the turntable; a temperature sensor that is connected to the cooling channel is fixedly installed inside the upper mold.

[0026] A further feature is that a guide rod is fixedly installed at the lower end of the external base, and a guide seat for the guide rod to extend into is fixedly installed on the upper surface of the base plate.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. In this invention, the cooling medium can be introduced into the medium inlet hole through the self-locking medium introduction unit, and leakage of the medium in the cooling channel can be prevented by the self-locking method. In this way, the medium can be temporarily stored in the cooling channel, allowing the medium to fully absorb heat, improving the utilization rate of the medium, and achieving the purpose of reducing costs and improving resource utilization.

[0029] 2. In this invention, the second connecting channel is used to receive the cooling medium introduced from the outside, the first connecting channel is kept in communication with the medium inlet hole, and the vertical sealing rod is used to control the connection or disconnection between the first connecting channel and the second connecting channel; the drive spring will push down the vertical sealing rod under normal conditions, so that the vertical sealing rod keeps the first connecting channel and the second connecting channel disconnected.

[0030] 3. In this invention, the embedded sealing seat extends into the intersecting area, and the sealing contact surface abuts against the embedded sealing seat to cut off the first connecting channel and the second connecting channel.

[0031] 4. In this invention, a notch is made in the embedded sealing seat to allow the sealing filler to extend in, so that the sealing filler can fit tightly against the sealing contact surface, thereby improving the sealing performance.

[0032] 5. In this invention, the extrusion block will push the sealing filler block upward under the push of the inner spring, so that the sealing filler block can better fit tightly with the sealing contact surface.

[0033] 6. In this invention, the flexible pad is fixed to the upper end of the square block. The flexible pad can not only contact the upper plate to play a buffering role, but also contact the upper plate to limit the vertical sealing pressure rod.

[0034] 7. In this invention, the upper cover plate adopts a detachable structure to facilitate the installation of the drive spring; the movable area between the upper cover plate and the upper plate is used for the placement of the drive spring.

[0035] 8. In this invention, the setting of the follower block can ensure the formation of the active area, and the active area can always exist so that the medium can pass through smoothly so that the follower block can be pushed up.

[0036] 9. In this invention, a turntable is used to separate and form a third channel and a second channel. In the initial state of the turntable, the second channel is connected to the air supply end and the third channel is connected to the exhaust end. At this time, the air pump can send the cooling medium into the second channel, and the medium can eventually be sent into the cooling channel. The medium in the active area will be discharged to the outside through the third channel and the exhaust end.

[0037] When the turntable is rotated 180 degrees, the second channel connects to the exhaust end, and the third channel connects to the supply end. This allows the air pump to deliver cooling medium into the third channel. The medium is then fed into the active area, then onto the follower block and the vertical sealing rod. The vertical sealing rod separates from the embedded sealing seat, connecting the first and second channels. At this point, the air pump can quickly extract the medium from the cooling channels, facilitating the re-injection of new medium.

[0038] The turntable is controlled by a stepper motor, and the temperature of the medium in the cooling channel is monitored in real time by a temperature sensor; this achieves intelligent control and is very convenient.

[0039] 10. In this invention, the guide rod can extend into the inner slot for positioning. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0041] Figure 2 This is a front view of the embodiment.

[0042] Figure 3This is a partial structural diagram of the interior of the upper mold in the embodiment;

[0043] Figure 4 for Figure 2 Enlarged view of section A in the middle;

[0044] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0045] In the diagram: 11. Top plate; 12. Bottom plate; 13. Upper mold; 14. Lower mold; 15. Injection port; 16. Guide rod; 17. Guide seat; 20. Cooling channel; 21. Medium inlet hole; 31. External seat; 32. Vertical sealing rod; 321. Sealing contact surface; 33. Drive spring; 41. First connecting channel; 42. Second connecting channel; 43. Vertical sealing hole; 44. Intersection area; 51. Embedded sealing seat; 52. Sealing filler block; 521. Viscous section; 53. Extrusion inner hole; 54. Extrusion block; 55. Upper top block; 551. Upper tip; 552. Recessed groove; 56. Inner spring 57. First screw; 61. Second screw; 62. Upper plate; 621. Recessed surface; 63. Third screw; 64. Top cover plate; 65. Moving area; 71. Square stop block; 72. Flexible pad block; 81. Following block; 82. Moving area; 83. Fourth screw; 84. Side cover plate; 85. Third connecting channel; 90. Turntable; 91. First inner hole; 911. Air supply end; 92. Second inner hole; 921. Exhaust end; 93. Sealing stop block; 941. Medium inlet hole; 942. Air inlet port; 951. Exhaust hole; 952. Exhaust port; 96. Output shaft; 97. Temperature sensor. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to the accompanying drawings.

[0047] As attached Figures 1 to 5 As shown;

[0048] This embodiment discloses an adjustable injection mold that is easy to form, including a top plate 11, a bottom plate 12, an upper mold 13, and a lower mold 14. The bottom plate 12 is placed on a platform as a supporting structure. The lower mold 14 is fixed to the upper end face of the bottom plate 12, and the upper mold 13 is fixed to the lower end face of the top plate 11. The upper mold 13 is located directly above the lower mold 14. The upper mold 13 can move relative to or away from the lower mold 14. When the upper mold 13 and the lower mold 14 are in contact, a molding cavity is formed between them. The upper end face of the top plate 11 is provided with an injection port 15 that communicates with the molding cavity.

[0049] Cooling channels 20 are arranged circumferentially around the interior of the upper mold 13;

[0050] The upper mold 13 has a horizontally penetrating medium inlet hole 21 on its left inner wall, and the right end of the medium inlet hole 21 is connected to the cooling channel 20. The upper mold 13 has a self-locking medium inlet unit installed on its left outer wall. The cooling medium can be introduced into the medium inlet hole 21 through the self-locking medium inlet unit, and the self-locking medium inlet unit can prevent the medium in the cooling channel 20 from leaking through self-locking.

[0051] The self-locking medium introduction unit includes an external seat 31 fixed to the left outer wall of the upper mold 13. The external seat 31 is provided with a first connecting channel 41, a second connecting channel 42, a vertical sealing rod 32, and a drive spring 33. The second connecting channel 42 is used to receive cooling medium introduced from the outside. The first connecting channel 41 is connected to the medium introduction hole 21. The external seat 31 is provided with a vertical sealing hole 43 that is connected to the first connecting channel 41 and the second connecting channel 42. The vertical sealing rod 32 slides vertically in the vertical sealing hole 43. The drive spring 33 is located at the upper end of the vertical sealing rod 32 and provides a downward driving force for the vertical sealing rod 32. The vertical sealing rod 32 can maintain the state of cutting off the first connecting channel 41 and the second connecting channel 42.

[0052] The first connecting channel 41, the second connecting channel 42, and the vertical sealing hole 43 intersect in an area 44. An embedded sealing seat 51 is fixedly installed inside the outer seat 31 and extends into the intersecting area 44. The lower end of the vertical sealing rod 32 has an inclined sealing contact surface 321 on the right side. Under the drive of the driving spring 33, the lower end of the vertical sealing rod 32 extends into the intersecting area 44, and the sealing contact surface 321 abuts against the embedded sealing seat 51 to cut off the first connecting channel 41 and the second connecting channel 42.

[0053] The embedded sealing seat 51 has a notch at the junction with the sealing contact surface 321, and a sealing block 52 is provided inside the embedded sealing seat 51. The sealing block 52 will partially protrude from the notch and then fit tightly against the sealing contact surface 321 to improve the sealing performance.

[0054] The sealing block 52 has two adhesive sections 521 fixedly attached to it, which are adhered to the inner sealing seat 51. The inner sealing seat 51 has a vertical extrusion hole 53. An extrusion block 54, an upper top block 55, and an inner spring 56 are arranged sequentially from top to bottom in the extrusion hole 53. The upper top block 55 has an upper tip 551 extending into the bottom of the extrusion block 54 at its upper end and a recessed groove 552 at its lower end. The upper end of the inner spring 56 extends into the recessed groove 552. A first screw 57 is screwed into the bottom of the extrusion hole 53, and the lower end of the inner spring 56 is connected to the first screw 57. The extrusion block 54 will push the sealing block 52 upward under the push of the inner spring 56, so that the sealing block 52 can better adhere to the sealing contact surface 321.

[0055] The upper end of the vertical sealing pressure rod 32 is fixedly provided with an upper plate 62 by a second screw 61. A square block 71 is fixedly provided on the inner right side of the outer seat 31. A flexible pad 72 is fixedly provided on the upper end of the square block 71. The flexible pad 72 can contact the upper plate 62 to play a buffering role. The flexible pad 72 can also contact the upper plate 62 to limit the vertical sealing pressure rod 32.

[0056] The square block 71 forms the vertical sealing hole 43 on the left inner wall of the outer seat 31. The square block 71 is located above the embedded sealing seat 51, and the first connecting channel 41 is formed between the two.

[0057] The upper end of the external base 31 is detachably covered with an upper cover plate 64 by a third screw 63. A movable area 65 with a gap is formed between the upper cover plate 64 and the upper plate 62. The drive spring 33 is placed in the movable area 65. The upper end of the upper plate 62 has an inwardly recessed surface 621 for the lower end of the drive spring 33 to abut.

[0058] Among them, a follower block 81 is fixedly installed on the left side of the vertical sealing pressure rod 32. The upper end of the follower block 81 is in contact with the upper plate 62. An active area 82 with a gap is formed between the follower block 81 and the outer seat 31. When the upper plate 62 contacts the square stop block 71, the active area 82 still exists.

[0059] A side cover plate 84 is detachably covered on the left side of the external base 31 by a fourth screw 83. The side cover plate 84 and the external base 31 form a main connecting channel. A turntable 90 with a circular cross-section is rotatably arranged between the side cover plate 84 and the external base 31. The turntable 90 divides the main connecting channel to form a third connecting channel 85 and the second connecting channel 42 located above and below the turntable 90, respectively.

[0060] The third connecting passage 85 is connected to the activity area 82, while the third connecting passage 85 is separated from the second connecting passage 42.

[0061] The turntable 90 has an independent first inner hole 91 and a second inner hole 92. The cross-sectional shape of the first inner hole 91 and the second inner hole 92 is arc-shaped. One end of the first inner hole 91 and one end of the second inner hole 92 are sealed by a sealing block 93. The other end of the first inner hole 91 serves as an air supply end 911, and the other end of the second inner hole 92 serves as an exhaust end 921.

[0062] The turntable 90 has a medium inlet hole 941 that connects to the first inner hole 91. An air inlet port 942 is provided at the end of the medium inlet hole 941. The air inlet port 942 is connected to an external air pump through a pipe fitting. The turntable 90 has a medium outlet hole 951 that connects to the second inner hole 92. An exhaust port 952 is provided at the end of the medium outlet hole 951. The exhaust port 952 is connected to an external air pump through a pipe fitting.

[0063] In the initial state, the second channel 42 of the turntable 90 is connected to the air supply end 911, and the third channel 85 is connected to the exhaust end 921; when the turntable 90 is rotated 180 degrees, the second channel 42 is connected to the exhaust end 921, and the third channel 85 is connected to the air supply end 911.

[0064] A stepper motor that provides driving force to the turntable 90 is fixedly installed on the inner side of the turntable 90, and the output shaft 96 of the stepper motor is connected to the turntable 90; a temperature sensor 97 that is connected to the cooling channel 20 is fixedly installed inside the upper mold 13.

[0065] The lower end of the external base 31 is fixedly provided with a guide rod 16, and the upper end surface of the base plate 12 is fixedly provided with a guide seat 17 for the guide rod 16 to extend into.

[0066] In this embodiment, the cooling medium is gas.

[0067] The working principle of this embodiment is as follows:

[0068] ① In the initial state, the second channel 42 of the turntable 90 is connected to the air supply end 911, and the third channel 85 is connected to the exhaust end 921.

[0069] The air pump delivers cooling medium into the second connecting channel 42. The medium delivered into the second connecting channel 42 pushes against the vertical sealing rod 32, causing the vertical sealing rod 32 to separate from the embedded sealing seat 51, thus connecting the first connecting channel 41 and the second connecting channel 42. The medium continues to flow into the cooling channel 20. At the same time, the medium present in the active area 82 is extracted to the outside by the air pump through the third connecting channel 85 and the exhaust end 921.

[0070] ②When the turntable 90 rotates 180 degrees, the second connecting channel 42 will be connected to the exhaust end 921, and the third connecting channel 85 will be connected to the air supply end 911.

[0071] The air pump delivers cooling medium to the third channel 85, which is then delivered into the active area 82. The medium then ascends and follows the block 81 and the vertical sealing rod 32. The vertical sealing rod 32 separates from the embedded sealing seat 51, and the first channel 41 and the second channel 42 are connected. At this time, the air pump can quickly extract the medium from the cooling channel 20, making it convenient to re-deliver new medium.

[0072] ③ The turntable 90 is controlled by a stepper motor and can rotate accurately 180 degrees. Simultaneously, a temperature sensor 97 monitors the temperature of the medium within the cooling channel 20 in real time. The temperature sensor 97 and the stepper motor can be connected to an external control system via wires. When the temperature sensor 97 detects that the temperature of the medium within the cooling channel 20 is higher than a threshold, it controls the turntable 90 to rotate 180 degrees to discharge the medium. Then, it controls the turntable 90 to rotate 180 degrees again to feed in new medium. This achieves intelligent control and is very convenient.

[0073] This embodiment eliminates the need for frequent changes to the connection positions of the air pump and the air depressor, making it more convenient for actual use.

[0074] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An adjustable injection mold for easy molding, comprising a top plate (11), a bottom plate (12), an upper mold (13), and a lower mold (14), wherein the bottom plate (12) serves as a supporting structure placed on a platform, the lower mold (14) is fixed to the upper end face of the bottom plate (12), the upper mold (13) is fixed to the lower end face of the top plate (11), the upper mold (13) is located directly above the lower mold (14), the upper mold (13) can move relative to or away from the lower mold (14), and when the upper mold (13) and the lower mold (14) are in contact, a molding cavity is formed between them; the upper end face of the top plate (11) is provided with an injection port (15) communicating with the molding cavity; characterized in that: The upper mold (13) is provided with cooling channels (20) arranged circumferentially inside; The upper mold (13) has a horizontally penetrating medium inlet hole (21) on its left inner wall, and the right end of the medium inlet hole (21) is connected to the cooling channel (20). The upper mold (13) has a self-locking medium inlet unit installed on its left outer wall. The cooling medium can be introduced into the medium inlet hole (21) through the self-locking medium inlet unit, and the self-locking medium inlet unit can prevent the medium in the cooling channel (20) from leaking through self-locking. The self-locking medium introduction unit includes an external seat (31) fixed to the left outer wall of the upper mold (13). The external seat (31) is provided with a first connecting channel (41), a second connecting channel (42), a vertical sealing rod (32), and a drive spring (33). The second connecting channel (42) is used to receive cooling medium introduced from the outside. The first connecting channel (41) is connected to the medium introduction hole (21). The external seat (31) is provided with a vertical sealing hole (43) that is connected to the first connecting channel (41) and the second connecting channel (42). The vertical sealing rod (32) slides vertically in the vertical sealing hole (43). The drive spring (33) is located at the upper end of the vertical sealing rod (32) and provides a driving force for the vertical sealing rod (32) to move downward. The vertical sealing rod (32) can maintain the state of cutting off the first connecting channel (41) and the second connecting channel (42).

2. The adjustable injection mold for easy molding according to claim 1, characterized in that: The first connecting channel (41), the second connecting channel (42), and the vertical sealing hole (43) intersect in an area (44). An embedded sealing seat (51) is fixedly installed inside the external seat (31). The embedded sealing seat (51) extends into the intersecting area (44). The lower end of the vertical sealing rod (32) has an inclined sealing contact surface (321) on the right side. Under the drive of the driving spring (33), the lower end of the vertical sealing rod (32) extends into the intersecting area (44). The sealing contact surface (321) abuts against the embedded sealing seat (51) to cut off the first connecting channel (41) and the second connecting channel (42).

3. The adjustable injection mold for easy molding according to claim 2, characterized in that: The embedded sealing seat (51) has a notch at the junction with the sealing contact surface (321), and a sealing filler (52) is provided in the embedded sealing seat (51). The sealing filler (52) will partially protrude from the notch and then fit tightly against the sealing contact surface (321) to improve the sealing performance.

4. The adjustable injection mold for easy molding according to claim 3, characterized in that: Two adhesive segments (521) are fixedly provided on the sealing block (52), and the two adhesive segments (521) are adhered to the inner sealing seat (51); the inner sealing seat (51) is provided with a vertical extrusion inner hole (53), and an extrusion block (54), an upper top block (55) and an inner spring (56) are arranged sequentially from top to bottom in the extrusion inner hole (53); the upper top block (55) is provided with an upper center that extends into the bottom of the extrusion block (54). The corner (551) and the lower end are provided with a recessed groove (552). The upper end of the inner spring (56) extends into the recessed groove (552). The bottom of the extrusion inner hole (53) is screwed with a first screw (57). The lower end of the inner spring (56) is connected to the first screw (57). The extrusion block (54) will push the sealing filler (52) upward under the push of the inner spring (56) so that the sealing filler (52) can better fit with the sealing contact surface (321).

5. The adjustable injection mold for easy molding according to claim 3, characterized in that: The upper end of the vertical sealing pressure rod (32) is fixedly provided with an upper plate (62) by a second screw (61). A square block (71) is fixedly provided on the inner right side of the outer seat (31). A flexible pad (72) is fixedly provided on the upper end of the square block (71). The flexible pad (72) can contact the upper plate (62) to play a buffering role. The flexible pad (72) can also contact the upper plate (62) to limit the vertical sealing pressure rod (32). The square block (71) forms the vertical sealing hole (43) on the left inner wall of the outer seat (31). The square block (71) is located above the embedded sealing seat (51), and the first connecting channel (41) is formed between the two.

6. The adjustable injection mold for easy molding according to claim 5, characterized in that: The upper end of the external base (31) is covered with an upper cover plate (64) which is detachable by a third screw (63). A movable area (65) with a gap is formed between the upper cover plate (64) and the upper plate (62). The drive spring (33) is placed in the movable area (65). The upper end of the upper plate (62) has an inwardly recessed surface (621) for the lower end of the drive spring (33) to abut.

7. The adjustable injection mold for easy molding according to claim 5, characterized in that: A follower block (81) is fixedly installed on the left side of the vertical sealing pressure rod (32). The upper end of the follower block (81) is in contact with the upper plate (62). An active area (82) with a gap is formed between the follower block (81) and the outer seat (31). When the upper plate (62) contacts the flexible pad (72), the active area (82) still exists. The left side of the external base (31) is detachably covered by a side cover plate (84) via a fourth screw (83). The side cover plate (84) forms a main connecting channel with the external base (31). A turntable (90) with a circular cross-section is rotatably arranged between the side cover plate (84) and the external base (31). The turntable (90) divides the main connecting channel to form a third connecting channel (85) and a second connecting channel (42) located above and below the turntable (90), respectively. The third connecting channel (85) is connected to the activity area (82), and the third connecting channel (85) is separated from the second connecting channel (42).

8. The adjustable injection mold for easy molding according to claim 7, characterized in that: The turntable (90) has an independent first inner hole (91) and a second inner hole (92). The cross-sectional shape of the first inner hole (91) and the second inner hole (92) is arc-shaped. One end of the first inner hole (91) and one end of the second inner hole (92) are sealed by a sealing block (93). The other end of the first inner hole (91) serves as the air supply end (911), and the other end of the second inner hole (92) serves as the exhaust end (921). The turntable (90) has a medium inlet hole (941) connected to the first inner hole (91), and an air inlet (942) is provided at the end of the medium inlet hole (941). The air inlet (942) is connected to an external air pump by means of a pipe fitting. The turntable (90) has a medium outlet hole (951) connected to the second inner hole (92), and an exhaust port (952) is provided at the end of the medium outlet hole (951). The exhaust port (952) is connected to an external air pump by means of a pipe fitting. In its initial state, the turntable (90) has its second connecting channel (42) connected to the air supply end (911) and its third connecting channel (85) connected to the air exhaust end (921). When the turntable (90) is rotated 180 degrees, the second connecting channel (42) will be connected to the air exhaust end (921) and the third connecting channel (85) will be connected to the air supply end (911). A stepper motor that provides driving force to the turntable (90) is fixedly installed on the inner side of the turntable (90), and the output shaft (96) of the stepper motor is connected to the turntable (90); a temperature sensor (97) that is connected to the cooling channel (20) is fixedly installed inside the upper mold (13).

9. The adjustable injection mold for easy molding according to claim 1, characterized in that: The lower end of the external base (31) is fixedly provided with a guide rod (16), and the upper end surface of the base plate (12) is fixedly provided with a guide seat (17) for the guide rod (16) to extend into.

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