A mold cavity height adjustment device and use method thereof

Abstract

The present invention discloses a mold cavity height adjustment device and a method for using the same, and relates to the technical field of mold production, including an injection lower mold, an injection upper mold, and a demoulding extrusion disk, wherein an extrusion drive device is fixedly connected to the top of the back side of one side of the injection upper mold, an injection molding cabin is provided inside one side of the injection lower mold, and a connecting disk is fixedly installed on the outer wall of the top of one side of the injection lower mold. By setting an adjustment dial to rotate and adjust the position height of the adjusting threaded rod inside the connecting disk, the position height of the injection depth control tray inside the injection molding cabin is adjusted to achieve injection molding operations of different depths, and the effect of precision injection molding is achieved by fitting between the injection upper mold and the injection lower mold, and a latch slide rail is set inside the injection lower mold, and a latch sliding block is directly inserted into the interior of the latch slide rail, so as to improve the accuracy of the device push for the limit buckle operation between the injection depth control tray and the injection molding cabin.

Description

Technical Field

[0001] The present invention relates to the technical field of mold production, and in particular to a mold cavity height adjustment device and a use method thereof. Background Art

[0002] A mold is a tool used to make molded objects. This tool consists of various parts, and different molds are composed of different parts. It mainly realizes the processing of the object's appearance by changing the physical state of the molded material. It is known as the "mother of industry". When using the mold for casting and molding, the molten metal solution will be poured into the mold cavity in the mold. However, the mold cavity size of the general mold is fixed and the space size of the injection mold cavity in the mold cannot be adjusted at will. This will lead to greater limitations when the mold is used in different situations. If the same object of different sizes needs to be injection molded, many molds need to be replaced to complete the injection molding of the object, which not only increases financial resources, but also is more troublesome to replace. In order to improve the flexibility of the injection molding specifications of the device, we designed a mold cavity height adjustment device. Summary of the invention

[0003] The object of the present invention is to provide a mold cavity height adjustment device and a use method thereof.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a mold cavity height adjustment device and a method of using the same, comprising an injection molding lower mold, an injection molding upper mold and a demolding extrusion disk, wherein the top end of one side back side of the injection molding upper mold is fixedly connected with an extrusion driving device, an injection molding cabin is opened inside one side of the injection molding lower mold, a connecting disk is fixedly installed on the top outer wall of one side top of the injection molding lower mold, an adjusting threaded rod is movably installed inside one side of the connecting disk, the top end surface of one side of the adjusting threaded rod is fixedly connected with an adjusting turntable, the bottom end surface of one side of the adjusting threaded rod is rotatably connected with a rotating connecting bearing, the bottom end surface of one side of the rotating connecting bearing is fixedly connected with a connecting plate, one side of the connecting plate is fixedly connected with a connecting block, the top end surface of one side of the connecting block is fixedly connected to a limiting chassis, and the top end surface of one side of the limiting chassis is fixedly installed with an injection molding depth control tray.

[0005] Preferably, the injection molding cabin passes through the interior of the connecting disk, and the connection relationship between the injection molding cabin and the connecting disk is a threaded connection. The number of the injection molding cabins is two, and the two injection molding cabins are symmetrically distributed on the top ends of both sides of the lower injection molding mold. The connection relationship between the injection molding depth control tray and the injection molding cabin is a limit snap connection, the limit chassis is located at the inner bottom end of the lower injection molding mold, and the connection relationship between the limit chassis and the lower injection molding mold is a sliding connection.

[0006] Preferably, the top ends of both sides of the limiting chassis are fixedly connected with latch sliding blocks, the inner walls of both sides of the lower injection mold are fixedly installed with latch slide rails, one side of the latch slide rail is provided with a latch limiting sliding groove, the top surface of one side of the upper injection mold is provided with a limiting hole groove, the top surface of one side of the lower injection mold is fixedly connected with a limiting column, the bottom end of one side of the limiting chassis is fixedly connected with a support column, and the bottom surface of one side of the support column is fixedly connected with a stabilizing foot plate.

[0007] Preferably, the positions of the latch sliding block and the latch sliding rail correspond one to one, the connection relationship between the latch sliding block and the latch sliding rail is a movable snap connection, the positions of the limiting hole groove and the limiting column correspond one to one, and the connection relationship between the limiting hole groove and the limiting column is a movable snap connection.

[0008] Preferably, a fixed mounting plate is fixedly connected to the top surface of the side surface of the upper injection mold, a latch head is fixedly mounted on the bottom end of one side of the fixed mounting plate, a first locking hole is provided on one side surface of the latch head, a latch box is fixedly mounted on the top surface of the side surface of the lower injection mold, a latch slot is provided inside the latch box, and a second locking hole is provided on one side surface of the latch box.

[0009] Preferably, the positions of the fixed mounting plate and the latch box correspond one to one, the connection relationship between the latch head and the latch box is a movable snap connection, the positions of the second locking hole and the first locking hole correspond one to one, and the cross-sectional apertures of the second locking hole and the first locking hole are the same.

[0010] Preferably, a demoulding and ejecting plate is fixedly connected to the bottom surface of one side of the demoulding and extrusion plate, a connecting ring is fixedly connected to the top of one side of the demoulding and extrusion plate, a connecting rod is fixedly connected to the top of one side of the connecting ring, an auxiliary handle is fixedly connected to the top of one side of the connecting rod, and the connection relationship between the demoulding and ejecting plate and the injection molding chamber is a movable snap-in connection.

[0011] Preferably, the method comprises the following steps:

[0012] S1: The height of the threaded rod inside the connecting plate is adjusted by directly rotating the adjusting dial, so as to adjust the position of the limit chassis at the bottom of the lower injection mold. At the same time, the injection depth controls the height of the tray inside the injection chamber. According to the actual required tank depth, the injection height of the mold is controlled.

[0013] S2: directly controlling the position of the upper injection mold through the extrusion drive device, and performing the fitting injection molding operation between the upper injection mold and the lower injection mold. At this time, the positions of the limit hole grooves and the limit columns correspond to each other in a one-to-one manner.

[0014] S3: The injection depth control tray is raised and lowered inside the injection molding chamber. At this time, the latch slide block is directly inserted into the latch slide rail, thereby further limiting the installation of the device;

[0015] S4: After the lower injection mold and the upper injection mold are fitted together, the latch head is directly inserted into the latch groove, and a locking latch device is installed in the second locking hole by using the one-to-one correspondence between the first locking hole and the second locking hole, so as to further install the fixed buckle between the lower injection mold and the upper injection mold;

[0016] S5: After the injection molding is completed, the injection molding depth control tray is pulled out from the inside of the injection molding chamber, and the demoulding extrusion plate is directly aligned with the lower injection mold;

[0017] S6: By aligning the limiting hole grooves and limiting columns on the demoulding extrusion plate, the demoulding plate is directly inserted into the interior of the injection molding chamber, and the extrusion demoulding operation is performed on the injection mold inside the injection molding chamber, thereby improving the demoulding efficiency of the device and thus improving the utilization efficiency of the device.

[0018] Compared with the related art, the mold cavity height adjustment device and the use method thereof provided by the present invention have the following beneficial effects:

[0019] 1. The present invention provides a mold cavity height adjustment device and a method for using the same. An adjustment dial is set to rotate and adjust the position height of the threaded rod inside the connecting disk, thereby adjusting the position height of the injection depth control tray inside the injection molding chamber, thereby achieving injection molding operations of different depths. The effect of precision injection molding is achieved through the fitting between the injection upper mold and the injection lower mold. A latch slide rail is set inside the injection lower mold, and a latch sliding block is directly inserted into the interior of the latch slide rail. For the limit buckle operation between the injection depth control tray and the injection molding chamber, the accuracy of the device push is improved.

[0020] 2. The present invention provides a mold cavity height adjustment device and a method for using the same. By setting a one-to-one correspondence between the positions of the limit hole grooves and the limit columns, the fitting accuracy between the lower injection mold and the upper injection mold is improved. Then, the pin head on the bottom surface of the fixed mounting plate is directly inserted into the interior of the pin groove. At this time, the positions of the first locking hole and the second locking hole correspond one-to-one. A pin device is installed inside the first locking hole and the second locking hole, which further improves the accuracy of injection molding for the fastening installation between the lower injection mold and the upper injection mold.

[0021] 3. The present invention provides a mold cavity height adjustment device and a method for using the same. By setting limit holes and limit columns on the demolding extrusion disk for direct one-to-one corresponding snap-on installation, the demolding ejection disk is directly inserted into the interior of the injection molding chamber, thereby achieving a quick demolding effect for the injection mold inside the injection molding chamber, improving the demolding efficiency of the device, and thus improving the injection molding efficiency of the device. The use of an auxiliary handle on the top surface of the demolding extrusion disk can assist in the use efficiency of the demolding extrusion disk, thereby further improving the use efficiency of the demolding extrusion disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall side bottom view of the device of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of a side view of the device of the present invention;

[0025] Figure 4 It is a schematic diagram of the bottom bottom view of the device of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the split side view of the lower injection mold and the upper injection mold of the present invention;

[0027] Figure 6 It is a schematic structural diagram of the demoulding device of the present invention.

[0028] Numbers in the figure: 1. Injection molding lower mold; 2. Injection molding upper mold; 3. Extrusion drive device; 4. Injection molding cabin; 5. Connecting plate; 6. Adjusting threaded rod; 7. Adjusting turntable; 8. Rotating connecting bearing; 9. Connecting plate; 10. Connecting block; 11. Limiting chassis; 13. Injection molding depth control tray; 14. Latch sliding block; 15. Latch slide rail; 16. Latch limiting sliding slot; 17. Limiting hole slot; 18. Limiting column; 19. Support column; 20. Stable foot plate; 21. Fixed mounting plate; 22. Latch head; 23. First locking hole; 24. Latch box; 25. Latch slot; 26. Second locking hole; 27. Demolding extrusion plate; 28. Demolding ejection plate; 29. ​​Connecting ring; 30. Connecting rod; 31. Use auxiliary handle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-6 The present invention provides a technical solution: a mold cavity height adjustment device and a method of using the same, comprising an injection molding lower mold 1, an injection molding upper mold 2 and a demolding extrusion disk 27, wherein an extrusion driving device 3 is fixedly connected to the top of the back side of the injection molding upper mold 2, an injection molding cabin 4 is provided inside one side of the injection molding lower mold 1, a connecting disk 5 is fixedly installed on the top outer wall of one side of the injection molding lower mold 1, an adjusting threaded rod 6 is movably installed inside one side of the connecting disk 5, an adjusting turntable 7 is fixedly connected to the top surface of one side of the adjusting threaded rod 6, a rotating connecting bearing 8 is rotatably connected to the bottom surface of one side of the adjusting threaded rod 6, a connecting plate 9 is fixedly connected to the bottom surface of one side of the rotating connecting bearing 8, a connecting block 10 is fixedly connected to one side of the connecting plate 9, a limiting chassis 11 is fixedly connected to the top surface of one side of the limiting chassis 11, an injection molding depth control tray 13 is fixedly installed on the top surface of one side of the limiting chassis 11, the injection molding cabin 4 runs through the interior of the connecting disk 5, the connection relationship between the injection molding cabin 4 and the connecting disk 5 is a threaded connection, the number of the injection molding cabins 4 is two, and the two injection molding cabins 4 are connected to each other. The upper and lower molds 1 are connected to each other by a locking mechanism 14, and the locking mechanism 15 is connected to the lower mold 1 by a locking mechanism 16. The locking mechanism 16 is connected to the lower mold 1 by a locking mechanism 17. The locking mechanism 17 is connected to the lower mold 1 by a locking mechanism 18. The locking mechanism 18 is connected to the upper and lower mold 1 by a locking mechanism 19. The locking mechanism 19 is connected to the upper and lower mold 1 by a locking mechanism 10. A limiting hole groove 17 is provided on the surface, a limiting column 18 is fixedly connected to the top surface of one side of the lower injection mold 1, a supporting column 19 is fixedly connected to the bottom end of one side of the limiting chassis 11, a stabilizing foot plate 20 is fixedly connected to the bottom end surface of one side of the support column 19, the positions of the latch sliding block 14 and the latch sliding rail 15 correspond one to one, the connection relationship between the latch sliding block 14 and the latch sliding rail 15 is a movable snap-in connection, the positions of the limiting hole groove 17 and the limiting column 18 correspond one to one, the connection relationship between the limiting hole groove 17 and the limiting column 18 is a movable snap-in connection.

[0032] In the implementation scheme, an adjustment dial 7 is set to rotate and adjust the position height of the adjusting threaded rod 6 inside the connecting plate 5, thereby adjusting the position height of the injection depth control tray 13 inside the injection molding chamber 4 to achieve injection molding operations of different depths. The effect of precision injection molding is achieved through the fit between the injection upper mold 2 and the injection lower mold 1. A latch slide rail 15 is set inside the injection lower mold 1, and the latch sliding block 14 is directly inserted into the interior of the latch slide rail 15. For the limit buckle operation between the injection depth control tray 13 and the injection molding chamber 4, the accuracy of the device push is improved.

[0033] Embodiment 2:

[0034] See also Figure 1-6 As shown, on the basis of embodiment 1, the present invention provides a technical solution: a fixed mounting plate 21 is fixedly connected to the top surface of the side of the injection upper mold 2, a latch head 22 is fixedly mounted on the bottom end of one side of the fixed mounting plate 21, a first locking hole 23 is provided on one side surface of the latch head 22, a latch box 24 is fixedly mounted on the top of the side of the injection lower mold 1, a latch groove 25 is provided inside the latch box 24, a second locking hole 26 is provided on one side surface of the latch box 24, the positions of the fixed mounting plate 21 and the latch box 24 correspond one to one, the connection relationship between the latch head 22 and the latch box 24 is an active snap-in connection, the positions of the second locking hole 26 and the first locking hole 23 correspond one to one, and the cross-sectional aperture of the second locking hole 26 and the first locking hole 23 are the same.

[0035] In the implementation case, by setting the position of the limiting hole groove 17 and the limiting column 18 to correspond one to one, the fitting accuracy between the lower injection mold 1 and the upper injection mold 2 is improved, and then the pin head 22 on the bottom surface of the fixed mounting plate 21 is directly inserted into the inside of the pin groove 25. At this time, the positions of the first locking hole 23 and the second locking hole 26 correspond one to one, and a pin device is installed inside the first locking hole 23 and the second locking hole 26, which further improves the accuracy of injection molding for the fastening installation between the lower injection mold 1 and the upper injection mold 2.

[0036] Embodiment three:

[0037] See also Figure 1-6 As shown, on the basis of the first embodiment, the present invention provides a technical solution: a demoulding and ejecting disc 28 is fixedly connected to the bottom surface of one side of the demoulding and extruding disc 27, a connecting ring 29 is fixedly connected to the top of one side of the demoulding and extruding disc 27, a connecting rod 30 is fixedly connected to the top of one side of the connecting ring 29, an auxiliary handle 31 is fixedly connected to the top of one side of the connecting rod 30, and the connection relationship between the demoulding and ejecting disc 28 and the injection molding chamber 4 is a movable clamping connection;

[0038] The steps include:

[0039] S1: The height of the threaded rod 6 inside the connecting plate 5 is adjusted by directly rotating the adjusting dial 7, so as to adjust the position of the limiting chassis 11 at the bottom end of the lower injection mold 1, and at the same time, the height of the injection depth control tray 13 inside the injection chamber 4 is controlled according to the actual required tank depth, so as to control the injection height of the mold;

[0040] S2: directly controlling the position of the upper injection mold 2 through the extrusion drive device 3, and performing the fitting injection molding operation between the upper injection mold 2 and the lower injection mold 1. At this time, the positions of the limiting hole grooves 17 and the limiting columns 18 correspond to each other in a one-to-one manner;

[0041] S3: The injection molding depth control tray 13 is raised and lowered inside the injection molding chamber 4, and the latch slide block 14 is directly inserted into the latch slide rail 15, thereby further limiting the installation of the device;

[0042] S4: After the lower injection mold 1 and the upper injection mold 2 are fitted together, the latch head 22 is directly inserted into the latch groove 25, and a locking latch device is installed in the second locking hole 26 by using the one-to-one correspondence between the first locking hole 23 and the second locking hole 26, so as to further install the fixed buckle between the lower injection mold 1 and the upper injection mold 2;

[0043] S5: After the injection molding is completed, the injection molding depth control tray 13 is pulled out from the inside of the injection molding chamber 4, and the demoulding squeeze plate 27 is used to align it directly with the lower injection mold 1;

[0044] S6: By aligning the limiting hole groove 17 and the limiting column 18 on the demolding extrusion plate 27, the demolding plate 28 is directly inserted into the interior of the injection molding chamber 4, and the extrusion demolding operation is realized for the injection mold inside the injection molding chamber 4, thereby improving the demolding efficiency of the device and thus improving the utilization efficiency of the device.

[0045] In the implementation case, the demolding extrusion disk 27 is provided with a limiting hole groove 17 and a limiting column 18 that are directly installed in a one-to-one corresponding snap-in manner. At this time, the demolding ejection disk 28 is directly inserted into the interior of the injection molding chamber 4, so that the injection mold inside the injection molding chamber 4 can be quickly demolded, thereby improving the demolding efficiency of the device, thereby improving the injection molding efficiency of the device. The auxiliary handle 31 on the top surface of the demolding extrusion disk 27 can assist the use efficiency of the demolding extrusion disk 27, thereby further improving the use efficiency of the demolding extrusion disk 27.

[0046] Working principle:

[0047] By directly rotating the adjusting dial 7 to adjust the position height of the adjusting threaded rod 6 inside the connecting plate 5, the position of the limiting chassis 11 at the bottom end of the lower injection mold 1 is adjusted. At the same time, the position height of the injection depth control tray 13 inside the injection molding chamber 4 is controlled according to the actual required groove depth, so as to control the injection height of the mold. The position of the injection upper mold 2 is directly controlled by the extrusion drive device 3, and the fitting injection molding operation between the injection upper mold 2 and the injection lower mold 1 is performed. At this time, the positions of the limiting hole grooves 17 and the limiting columns 18 correspond to each other and are plugged in and limited. The injection depth control tray 13 is lifted and lowered in the injection molding chamber 4. At this time, the latch sliding block 14 is directly inserted into the latch sliding rail 15, so as to further limit the installation of the device, the lower injection mold 1 and the injection upper After the molds 2 are fitted together, the pin head 22 is directly inserted into the pin slot 25, and the locking pin device is installed in the second locking hole 26 by utilizing the one-to-one correspondence between the first locking hole 23 and the second locking hole 26, and further the fixed buckle between the lower injection mold 1 and the upper injection mold 2 is installed. After the injection molding is completed, the injection depth control tray 13 is pulled out from the inside of the injection molding chamber 4, and the demoulding extrusion plate 27 is directly aligned with the lower injection mold 1. Through the alignment of the limiting hole groove 17 and the limiting column 18 on the demoulding extrusion plate 27, the demoulding ejection plate 28 is directly inserted into the injection molding chamber 4, and the extrusion demoulding operation is realized for the injection mold inside the injection molding chamber 4, thereby improving the demoulding efficiency of the device and thus improving the utilization efficiency of the device.

Claims

1. A mold cavity height adjustment device, comprising an injection lower mold (1), an injection upper mold (2) and a demoulding extrusion plate (27), wherein an extrusion drive device (3) is fixedly connected to the top of the back side of the injection upper mold (2), characterized in that: An injection molding chamber (4) is provided inside one side of the lower injection molding mold (1); a connection plate (5) is fixedly installed on the outer wall of the top end of one side of the lower injection molding mold (1); an adjusting threaded rod (6) is movably installed inside one side of the connecting plate (5); an adjusting turntable (7) is fixedly connected to the top end surface of one side of the adjusting threaded rod (6); a rotating connecting bearing (8) is rotatably connected to the bottom end surface of one side of the adjusting threaded rod (6); a connecting plate (9) is fixedly connected to the bottom end surface of one side of the rotating connecting bearing (8); a connecting block (10) is fixedly connected to one side of the connecting plate (9); a limiting chassis (11) is fixedly connected to the top end surface of one side of the connecting block (10); an injection molding depth control tray (13) is fixedly installed to the top end surface of one side of the limiting chassis (11).

2. A mold cavity height adjustment device according to claim 1, characterized in that: The injection molding chamber (4) passes through the interior of the connecting plate (5); the connection relationship between the injection molding chamber (4) and the connecting plate (5) is a threaded connection; the number of the injection molding chambers (4) is two, and the two injection molding chambers (4) are symmetrically distributed on the top ends of both sides of the lower injection mold (1); the connection relationship between the injection molding depth control tray (13) and the injection molding chamber (4) is a limit buckle connection; the limit chassis (11) is located at the bottom end of the interior of the lower injection mold (1); the connection relationship between the limit chassis (11) and the lower injection mold (1) is a sliding connection.

3. A mold cavity height adjustment device according to claim 1, characterized in that: The top ends of both sides of the limiting chassis (11) are fixedly connected with latch sliding blocks (14); the inner walls of both sides of the lower injection mold (1) are fixedly installed with latch sliding rails (15); one side of the latch sliding rail (15) is provided with a latch limiting sliding groove (16); the top end surface of one side of the upper injection mold (2) is provided with a limiting hole groove (17); the top end surface of one side of the lower injection mold (1) is fixedly connected with a limiting column (18); the bottom end of one side of the limiting chassis (11) is fixedly connected with a support column (19); the bottom end surface of one side of the support column (19) is fixedly connected with a stabilizing foot plate (20).

4. A mold cavity height adjustment device according to claim 3, characterized in that: The positions of the latch sliding block (14) and the latch sliding rail (15) correspond one to one, and the connection relationship between the latch sliding block (14) and the latch sliding rail (15) is a movable snap connection. The positions of the limiting hole groove (17) and the limiting column (18) correspond one to one, and the connection relationship between the limiting hole groove (17) and the limiting column (18) is a movable snap connection.

5. The mold cavity height adjustment device according to claim 1, characterized in that: A fixed mounting plate (21) is fixedly connected to the top surface of the side surface of the upper injection mold (2), a latch head (22) is fixedly mounted on the bottom end of one side of the fixed mounting plate (21), a first locking hole (23) is provided on one side surface of the latch head (22), a latch box (24) is fixedly mounted on the top surface of the side surface of the lower injection mold (1), a latch slot (25) is provided inside the latch box (24), and a second locking hole (26) is provided on one side surface of the latch box (24).

6. The mold cavity height adjustment device according to claim 5, characterized in that: The positions of the fixed installation plate (21) and the latch box (24) correspond one to one, the connection relationship between the latch head (22) and the latch box (24) is a movable snap connection, the positions of the second locking hole (26) and the first locking hole (23) correspond one to one, and the cross-sectional apertures of the second locking hole (26) and the first locking hole (23) are the same.

7. The mold cavity height adjustment device according to claim 1, characterized in that: A demoulding and ejecting disk (28) is fixedly connected to the bottom surface of one side of the demoulding and extruding disk (27), a connecting ring (29) is fixedly connected to the top of one side of the demoulding and extruding disk (27), a connecting rod (30) is fixedly connected to the top of one side of the connecting ring (29), an auxiliary handle (31) is fixedly connected to the top of one side of the connecting rod (30), and the connection relationship between the demoulding and ejecting disk (28) and the injection molding chamber (4) is a movable snap-in connection.

8. The method for using the mold cavity height adjustment device according to claim 1, characterized in that: The steps include: S1: The height of the threaded rod (6) inside the connection plate (5) is adjusted by directly rotating the adjusting dial (7), thereby adjusting the position of the limit base (11) at the bottom end of the lower injection mold (1), and at the same time, the height of the injection depth control tray (13) inside the injection chamber (4) is controlled according to the actual required groove depth, thereby controlling the injection height of the mold; S2: directly controlling the position of the upper injection mold (2) through the extrusion drive device (3), performing a fitting injection molding operation between the upper injection mold (2) and the lower injection mold (1), at which time the positions of the limiting hole grooves (17) and the limiting columns (18) correspond one to one for plug-in limiting; S3: The injection molding depth control tray (13) is raised and lowered inside the injection molding chamber (4), and at this time, the latch slide block (14) is directly inserted into the latch slide rail (15), thereby further limiting the installation of the device; S4: After the lower injection mold (1) and the upper injection mold (2) are fitted together, the latch head (22) is directly inserted into the latch groove (25), and a locking latch device is installed inside the second locking hole (26) by using the one-to-one correspondence between the first locking hole (23) and the second locking hole (26), and the fixing buckle between the lower injection mold (1) and the upper injection mold (2) is further installed; S5: After the injection molding is completed, the injection molding depth control tray (13) is pulled out from the inside of the injection molding chamber (4) and aligned with the lower injection mold (1) by using the demoulding squeeze plate (27); S6: By aligning the limiting hole groove (17) and the limiting column (18) on the demoulding extrusion plate (27), the demoulding extrusion plate (28) is directly inserted into the interior of the injection molding chamber (4), so as to realize the extrusion demoulding operation for the injection mold inside the injection molding chamber (4), thereby improving the demoulding efficiency of the device and thus improving the utilization efficiency of the device.

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