A mold capable of automatically cutting a glue inlet in a mold

Abstract

The invention discloses a mold capable of automatically cutting a glue inlet in a mold, relates to the field of gate cutting in injection molds, and solves the problem that it is difficult to directly cut and grind the glue inlet of an injection molded part at a connection inside the mold when using an existing injection mold. The mold comprises a concave mold, a convex mold, a conveying mechanism, a cutting mechanism, a grinding mechanism and a feed pipe, wherein the conveying mechanism comprises a device pipe, and the cutting mechanism comprises a cutting knife. The invention inputs molten raw materials in the feed pipe into a cavity between the concave mold and the convex mold through the device pipe for molding operation, controls the cutting knife to slide open when the raw materials are pressurized and conveyed in the device pipe, and performs raw materials injection molding operation, and automatically controls the cutting knives on both sides to close when the raw materials stop being pressurized, and cuts off the connection between the concave mold and the device pipe, and after the injection molded part is cooled and formed, controls the cutting knife to rotate through the grinding mechanism, grinds the cross section and collects and outputs the generated dust at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of gate cutting in an injection mold, in particular to a mold capable of automatically cutting a glue inlet in a mold. Background Art

[0002] Injection molding is a molding method that combines injection and molding. By injecting the molten injection material into the injection mold, it forms an injection molded part that conforms to the injection mold during the cooling process, which can efficiently and quickly realize the production of complex products. The injection mold is generally composed of a concave mold and a convex mold, with a cavity of the desired shape formed in the middle. The molten material is injected into the cavity for cooling and molding. In order to ensure that the injection material completely fills the cavity in the injection mold, the injection material injected from the injection port on the injection mold is often slightly more than the actual volume of the cavity, causing part of the injection material to accumulate at the junction of the cavity and the injection port. When demolding, the obtained injection molded part needs to be cut at the glue port.

[0003] The existing glue inlet cutting equipment is generally arranged outside the mold. When demolding, it is necessary to retain a section of the glue stick at the glue inlet and then cut it through the cutting equipment. The cross section after cutting is generally not completely flush with the product surface, affecting the aesthetics of the product. When using this external cutting equipment, it is difficult to prevent the entry of molten raw materials from the source position inside the glue inlet. During cutting, a longer section of the glue stick will be cut off, resulting in waste of raw materials. At the same time, it is difficult to directly grind the cross section smooth during the cutting process, and the use is not convenient and efficient enough. Summary of the invention

[0004] The object of the present invention is to provide a mold capable of automatically cutting the glue inlet in the mold, which is convenient for directly cutting the product and the glue inlet at the connection point and performing a grinding operation, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mold capable of automatically cutting a glue inlet in a mold, comprising a concave mold, a convex mold, a conveying mechanism, a cutting mechanism, a grinding mechanism and a feed pipe, wherein a docking hole is provided on the concave mold, the conveying mechanism comprises a device pipe plugged into the docking hole, and is used to input the molten raw material in the feed pipe into the cavity between the concave mold and the convex mold through the device pipe for molding operation, the cutting mechanism comprises two groups of cutting knives installed in the device pipe, the cross section of the cutting knives is arc-shaped, when the raw material is pressurized and conveyed in the device pipe, the cutting knives are controlled to slide open, when the raw material stops being pressurized, the cutting knives on both sides are automatically controlled to close, and the connection between the concave mold and the device pipe is cut off, the grinding mechanism is installed in the device pipe, and is used to control the cutting knives to rotate after the injection molded part is cooled and formed, and the cross section is polished and smoothed, and the generated dust is collected and output, so as to directly cut off the product from the glue inlet at the connection and perform the grinding operation.

[0006] Preferably, the grinding mechanism includes a rotating cylinder rotatably connected to the inner wall of the device tube, a conveying pipe for connecting the device tube and the die is provided in the rotating cylinder, a storage chamber for storing dust is provided in the device tube, a dust suction port is provided on the side of the cutting knife, and a grinding part is provided in the device tube for driving the rotating cylinder to rotate and simultaneously sucking the dust in the dust suction port into the storage chamber, so that after the injection molded part is cooled and formed, the cutting knife can be controlled to rotate, the cross section can be polished to make it smooth, and the generated dust can be collected and output.

[0007] Preferably, the cutting mechanism also includes two groups of first pipes fixedly installed in the rotating cylinder, two groups of arc grooves are opened in the rotating cylinder, the two groups of cutting knives are slidably connected to the inner walls of the arc grooves on both sides respectively, one end of the first pipe is connected to the arc groove, and a liquid storage cavity for storing hydraulic oil is opened in the device pipe. The device pipe is provided with a control member for controlling the sliding state of the cutting knife according to the internal molten raw material conveying state, so that when the raw material is pressurized and conveyed in the device pipe, the cutting knife is controlled to slide open, and when the raw material stops being pressurized, the cutting knives on both sides are automatically controlled to close, thereby cutting off the connection between the die and the device pipe.

[0008] Preferably, the control component includes a control panel installed in the device tube, a sliding groove connected to the liquid storage chamber is provided in the device tube, the sliding groove is connected to the device tube, the control panel is slidably connected to the inner wall of the sliding groove, a first annular cavity connected to one end of the first pipeline is provided in the device tube, a second pipeline for connecting the first annular cavity and the liquid storage chamber is provided in the device tube, and a driving component for sensing the hydraulic strength in the device tube and controlling the hydraulic state in the liquid storage chamber is provided on the control panel, so as to control the sliding state of the cutting knife according to the internal molten raw material conveying state.

[0009] Preferably, the driving member includes a pushing ring fixedly mounted on the side of the control plate, the pushing ring is slidably connected to the inner wall of the sliding groove, the side of the pushing ring is fixedly connected to a tension spring fixedly connected to the liquid storage chamber, a plurality of groups of delivery holes are evenly arranged on the control plate, and the side of the control plate is fixedly connected to a sliding ring slidably connected to the inner wall of the sliding groove, so as to facilitate sensing the hydraulic strength in the device tube and controlling the hydraulic state in the liquid storage chamber.

[0010] Preferably, the grinding piece includes an outer sleeve and an inner sleeve fixedly mounted on the side of the rotating cylinder, the inner wall of the outer sleeve is evenly and fixedly connected with multiple groups of driving blades fixedly connected to the outer wall of the inner sleeve, a conveying chamber that can be communicated with the storage chamber is formed between the outer sleeve and the inner sleeve, a third pipe for connecting the dust suction port and the conveying chamber is opened in the rotating cylinder, and a rotating part for driving the rotating cylinder to rotate is provided in the device pipe, which is convenient for driving the rotating cylinder to rotate and simultaneously linking the dust in the dust suction port to be sucked into the storage chamber.

[0011] Preferably, the conveying mechanism also includes a threaded tube fixedly mounted on the die, the outer wall of the device tube is rotatably connected to a threaded ring threadedly connected to the threaded tube, and the outer wall of the device tube is provided with a threaded groove threadably connected to the feed tube, so as to facilitate the input of the molten raw material in the feed tube into the cavity between the die and the punch through the device tube for molding operation.

[0012] Preferably, the rotating member includes a driving motor fixedly installed in the device tube, the output end of the driving motor is coaxially fixedly connected with a driving gear, and the outer wall of the outer sleeve is fixedly connected with an external gear ring meshing with the driving gear, so as to drive the rotating cylinder to rotate.

[0013] Preferably, the threaded ring is provided with a second annular cavity which can be communicated with the storage cavity, the threaded ring is provided with a fourth pipe which can be communicated with the second annular cavity, and the threaded ring is fixedly connected with an output pipe which can be communicated with the fourth pipe, so as to facilitate the synchronous output of the dust in the storage cavity.

[0014] Preferably, the conveying hole is tapered, and the hole diameter at one end facing the die is smaller than the hole diameter at the other end, so as to increase the thrust on the control plate during the conveying of the molten raw material in the device pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides a mold capable of automatically cutting a glue inlet in a mold, which solves the problem that it is difficult to directly cut and grind the glue inlet of an injection molded part at a connection inside the mold when using an existing injection mold. A device tube is connected and fixed to a concave mold and a feed tube through a conveying mechanism, and the molten raw material in the feed tube is input into a cavity between the concave mold and the convex mold through the device tube for molding. When the raw material is pressurized and conveyed in the device tube, the cutting knife is controlled to slide open to perform raw material injection molding. When the raw material stops being pressurized, the cutting knives on both sides are automatically controlled to close to cut off the connection between the concave mold and the device tube. After the injection molded part is cooled and formed, the cutting knife is controlled to rotate through a grinding mechanism to grind the cross section and collect and output the generated dust.

[0017] 2. The present invention provides a mold that can automatically cut the glue inlet in the mold. The device is small in size, easy to install, and has strong adaptability. It is controlled by liquid pressure inside, which reduces the driving source and realizes the function of automatic cutting and synchronous grinding. It is convenient to directly cut off the product and the glue inlet at the connection and perform grinding operations, which reduces the amount of raw materials brought out of the glue inlet, saves the cost of raw materials, and also makes the subsequent processing of the injection molded parts more convenient, reduces the subsequent processing steps, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is an exploded view of the local structure of the conveying mechanism of the present invention.

[0020] Figure 3 It is a partial structural sectional view of the conveying mechanism of the present invention.

[0021] Figure 4 for Figure 3 A magnified image of area A.

[0022] Figure 5 It is a schematic diagram of the local structure of the cutting mechanism of the present invention.

[0023] Figure 6 It is a partial structural sectional view of the cutting mechanism of the present invention.

[0024] Figure 7 for Figure 6 Enlarged view of area B.

[0025] Figure 8 for Figure 6 Enlarged view of area C.

[0026] Fig. 9 It is a schematic diagram of the local structure of the grinding mechanism of the present invention.

[0027] Fig.10 for Fig. 9 Enlarged view of area D in the middle.

[0028] In the figure: 1-die; 2-punch; 3-feed pipe; 4-docking hole; 5-conveying mechanism; 6-device pipe; 7-cutting mechanism; 8-cutting knife; 9-grinding mechanism; 10-rotating cylinder; 11-conveying pipe; 12-storage chamber; 13-dust suction port; 15-first pipeline; 16-arc groove; 17-liquid storage chamber; 18-control member; 19-control board; 20-sliding groove; 21-first annular cavity; 22-second pipeline; 23-driving member; 24-pushing ring; 25-tension spring; 26-conveying hole; 27-sliding ring; 28-outer sleeve; 29-inner sleeve; 30-driving blade; 31-third pipeline; 32-rotating member; 33-threaded pipe; 34-threaded ring; 35-threaded groove; 36-driving motor; 37-driving gear; 38-outer gear ring; 39-second annular cavity; 40-fourth pipeline; 41-output pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 10The present invention provides a technical solution: a mold capable of automatically cutting a glue inlet in a mold, comprising a concave mold 1, a convex mold 2, a conveying mechanism 5, a cutting mechanism 7, a grinding mechanism 9 and a feed pipe 3. The concave mold 1 is provided with a docking hole 4. The conveying mechanism 5 comprises a device pipe 6 plugged into the docking hole 4, which is used to input the molten raw material in the feed pipe 3 into the cavity between the concave mold 1 and the convex mold 2 through the device pipe 6 for molding. The cutting mechanism 7 comprises two groups of cutting knives 8 installed in the device pipe 6. The cross section of the cutting knife 8 is arc-shaped. When the raw material is pressurized and conveyed in the device pipe 6, the cutting knife 8 is controlled to slide open. When the raw material stops being pressurized, the cutting knives 8 on both sides are automatically controlled to close, and the connection between the concave mold 1 and the device pipe 6 is cut off. The grinding mechanism 9 is installed in the device pipe 6, and is used to control the cutting knife 8 to rotate after the injection molded part is cooled and molded, and the cross section is polished and smoothed, and the generated dust is collected and output.

[0031] The grinding mechanism 9 includes a rotating cylinder 10 rotatably connected to the inner wall of the device tube 6, a conveying pipe 11 for connecting the device tube 6 and the die 1 is provided in the rotating cylinder 10, a storage chamber 12 for storing dust is provided in the device tube 6, a dust suction port 13 is provided on the side of the cutting knife 8, and a grinding part is provided in the device tube 6 for driving the rotating cylinder 10 to rotate and simultaneously sucking the dust in the dust suction port 13 into the storage chamber 12.

[0032] The cutting mechanism 7 also includes two groups of first pipes 15 fixedly installed in the rotating cylinder 10. Two groups of arc grooves 16 are opened in the rotating cylinder 10. The two groups of cutting knives 8 are slidably connected to the inner walls of the arc grooves 16 on both sides respectively. One end of the first pipe 15 is connected to the arc groove 16. A liquid storage cavity 17 for storing hydraulic oil is opened in the device tube 6. A control part 18 for controlling the sliding state of the cutting knife 8 according to the internal molten raw material conveying state is provided in the device tube 6.

[0033] The control component 18 includes a control panel 19 installed in the device tube 6. A sliding groove 20 connected to the liquid storage chamber 17 is provided in the device tube 6. The sliding groove 20 is connected to the device tube 6. The control panel 19 is slidably connected to the inner wall of the sliding groove 20. A first annular cavity 21 connected to one end of the first pipe 15 is provided in the device tube 6. A second pipe 22 for connecting the first annular cavity 21 and the liquid storage chamber 17 is provided in the device tube 6. A driving component 23 for sensing the hydraulic strength in the device tube 6 and controlling the hydraulic state in the liquid storage chamber 17 is provided on the control panel 19.

[0034] The driving member 23 includes a pushing ring 24 fixedly mounted on the side of the control plate 19, the pushing ring 24 is slidably connected to the inner wall of the sliding groove 20, and a tension spring 25 fixedly connected to the side of the pushing ring 24 is fixedly connected to the liquid storage chamber 17. A plurality of groups of conveying holes 26 are evenly arranged on the control plate 19, and the conveying holes 26 are conical, and the aperture at one end facing the die 1 is smaller than the aperture at the other end. A sliding ring 27 slidably connected to the inner wall of the sliding groove 20 is fixedly connected to the side of the control plate 19.

[0035] The polishing part includes an outer sleeve 28 and an inner sleeve 29 fixedly installed on the side of the rotating cylinder 10. The inner wall of the outer sleeve 28 is evenly and fixedly connected with multiple groups of driving blades 30 fixedly connected to the outer wall of the inner sleeve 29. A conveying chamber that can be connected to the storage chamber 12 is formed between the outer sleeve 28 and the inner sleeve 29. A third pipe 31 for connecting the dust suction port 13 and the conveying chamber is opened in the rotating cylinder 10. A rotating member 32 for driving the rotating cylinder 10 to rotate is provided in the device tube 6. The rotating member 32 includes a driving motor 36 fixedly installed in the device tube 6. The model of the driving motor 36 is preferably LD60 micro motor. The output end of the driving motor 36 is coaxially fixedly connected with a driving gear 37, and the outer wall of the outer sleeve 28 is fixedly connected with an outer gear ring 38 meshing with the driving gear 37.

[0036] The conveying mechanism 5 also includes a threaded tube 33 fixedly mounted on the die 1, a threaded ring 34 threadedly connected to the threaded tube 33 is rotatably connected to the outer wall of the device tube 6, a threaded groove 35 threadably connected to the feed tube 3 is provided on the outer wall of the device tube 6, a second annular cavity 39 communicated with the storage cavity 12 is provided on the threaded ring 34, a fourth pipe 40 communicated with the second annular cavity 39 is provided on the threaded ring 34, and an output pipe 41 communicated with the fourth pipe 40 is fixedly connected to the threaded ring 34.

[0037] In this embodiment, the device tube 6 is inserted into the docking hole 4, the threaded ring 34 is rotated to connect and fix it with the threaded tube 33, and then one end of the feed tube 3 is connected and fixed to the device tube 6 through the threaded ring 34, and the output tube 41 is docked and fixed to the fourth pipeline 40, and the installation operation of the entire device can be completed. Similarly, when disassembling, the connection between the output tube 41, the feed tube 3 and the threaded tube 33 and the device tube 6 is released, and the device tube 6 is pulled out from the docking hole 4 to perform the disassembly operation. The present invention makes relatively small changes to the overall die 1, and only needs to open a set of docking holes 4 and install corresponding threaded tubes 33, which is convenient for modifying existing molds and reducing the cost of product replacement.

[0038] When the molten raw material in the feed pipe 3 is input into the device pipe 6, the control board 19 will be pushed, and the raw material will be input into the cavity between the concave mold 1 and the convex mold 2 through the delivery hole 26, the inner sleeve 29 and the delivery pipe 11 for injection molding and cooling. In this process, the control board 19 is pushed to drive the push ring 24 to slide in the sliding groove 20, and the tension spring 25 is stretched, and at the same time, the volume in the liquid storage cavity 17 is increased and the pressure is reduced, that is, the pressure in the first pipe 15 and the arc groove 16 is reduced through the second pipe 22 and the first annular cavity 21, and the cutting knife 8 slides to both ends in the arc groove 16, and the molten raw material can directly enter the cavity through the delivery pipe 11 for injection molding.

[0039] When the injection molding is completed, the raw material stops being pressurized, and the ring 24 is pushed in the opposite direction under the drive of the tension spring 25, thereby increasing the hydraulic strength in the liquid storage chamber 17, thereby increasing the pressure in the arc groove 16, and pushing the cutting knife 8 to slide and close in the arc groove 16, thereby blocking the connection between the cavity and the conveying tube 11. Since the cutting knife 8 is arc-shaped, it can ensure that the tip of the cutting knife 8 is exactly at the connection between the cavity and one end of the conveying tube 11 when closing. At the same time, the outer wall of the tip of the cutting knife 8 can adopt a frosted surface. In the subsequent rotation process, the cross section is polished through the outer wall of the cutting knife 8. As the tip of the cutting knife 8 rotates, the cross section can be fitted and polished, and the polishing is smoother.

[0040] Start the drive motor 36 to drive the drive gear 37 to rotate, so that the outer gear ring 38 drives the outer sleeve 28 to rotate. The outer sleeve 28 drives the inner sleeve 29 and the rotating cylinder 10 to rotate together through the driving blade 30, so that the cutting knife 8 can rotate quickly. At the same time, the driving blade 30 generates a suction force during the rotation, and the dust generated by grinding is sucked into the third pipe 31 through the dust suction port 13, and then output to the storage chamber 12 through the conveying chamber, and then output to the output pipe 41 through the second annular cavity 39 and the fourth pipe 40.

[0041] It is worth noting that: since the position of the cutting knife 8 is not fixed, while the position of the third pipe 31 is fixed, the cutting knife 8 can block one end of the third pipe 31 when in the open state, and when closed for cutting, it drives the dust suction port 13 to slide to a state connected with one end of the third pipe 31. By setting the conveying chamber and the second annular chamber 39, it can be ensured that during the rotation of the rotating cylinder 10 and the threaded ring 34, the dust can always be input from the dust suction port 13 into the storage chamber 12 and output from the fourth pipe 40. By setting the first annular chamber 21, the first pipe 15 can always be connected with the second pipe 22 during the rotation of the rotating cylinder 10. The setting of the sliding ring 27 prevents the molten raw material from entering the sliding groove 20.

[0042] The device is compact, easy to install, and highly adaptable. It is controlled by liquid pressure internally, which reduces the driving source and realizes the function of automatic cutting and synchronous grinding. It is convenient to directly cut off the product from the glue inlet at the connection and perform grinding operations, which reduces the amount of raw materials brought out of the glue inlet, saves the cost of raw materials, and also makes the subsequent processing of injection molded parts more convenient, reduces subsequent processing steps, and improves production efficiency.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold capable of automatically cutting a glue inlet in a mold, characterized in that: include: A die (1), a punch (2) and a feed pipe (3), wherein the die (1) is provided with a docking hole (4); Also includes: A conveying mechanism (5), the conveying mechanism (5) comprising a device pipe (6) plugged into the docking hole (4), and used to feed the molten raw material in the feed pipe (3) into the cavity between the female mold (1) and the male mold (2) through the device pipe (6) for molding; A cutting mechanism (7), the cutting mechanism (7) comprising two sets of cutting knives (8) installed in the device pipe (6), the cross section of the cutting knives (8) being arc-shaped, when the raw material is pressurized and transported in the device pipe (6), the cutting knives (8) are controlled to slide open, and when the raw material stops being pressurized, the cutting knives (8) on both sides are automatically controlled to close, thereby cutting off the connection between the die (1) and the device pipe (6); The grinding mechanism (9) is installed in the device tube (6) and is used to control the cutting knife (8) to rotate after the injection molded part is cooled and formed, so as to grind the cross section and collect and output the generated dust at the same time. The grinding mechanism (9) comprises a rotating cylinder (10) rotatably connected to the inner wall of the device tube (6), a conveying pipe (11) for connecting the device tube (6) and the die (1) is provided in the rotating cylinder (10), a storage chamber (12) for storing dust is provided in the device tube (6), a dust suction port (13) is provided on the side of the cutting knife (8), and a device tube (6) is provided with a conveying pipe (11) for driving the rotating cylinder (10) to rotate. The device tube (6) is provided with a liquid storage chamber (17) for storing hydraulic oil. The device tube (6) is provided with a control member (18) for controlling the sliding state of the cutting blade (8) according to the conveying state of the internal molten raw material.

2. A mold capable of automatically cutting a glue inlet in a mold according to claim 1, characterized in that: The control member (18) comprises a control panel (19) installed in the device tube (6); a sliding groove (20) connected to the liquid storage chamber (17) is provided in the device tube (6); the sliding groove (20) is connected to the device tube (6); the control panel (19) is slidably connected to the inner wall of the sliding groove (20); a first annular cavity (21) connected to one end of the first pipe (15) is provided in the device tube (6); a second pipe (22) for connecting the first annular cavity (21) and the liquid storage chamber (17) is provided in the device tube (6); and a driving member (23) for sensing the hydraulic strength in the device tube (6) and controlling the hydraulic state in the liquid storage chamber (17) is provided on the control panel (19).

3. A mold capable of automatically cutting a glue inlet in a mold according to claim 2, characterized in that: The driving member (23) comprises a pushing ring (24) fixedly mounted on a side surface of the control plate (19), the pushing ring (24) being slidably connected to the inner wall of the sliding groove (20), a tension spring (25) fixedly connected to the side surface of the pushing ring (24) being fixedly connected to the liquid storage chamber (17), a plurality of groups of delivery holes (26) being evenly arranged on the control plate (19), and a sliding ring (27) slidably connected to the inner wall of the sliding groove (20) being fixedly connected to the side surface of the control plate (19).

4. A mold capable of automatically cutting a glue inlet in a mold according to claim 1, characterized in that: The grinding member comprises an outer sleeve (28) and an inner sleeve (29) fixedly mounted on the side of a rotating cylinder (10); the inner wall of the outer sleeve (28) is evenly and fixedly connected to a plurality of groups of driving blades (30) fixedly connected to the outer wall of the inner sleeve (29); a conveying chamber that can communicate with a storage chamber (12) is formed between the outer sleeve (28) and the inner sleeve (29); a third pipe (31) for connecting the dust suction port (13) and the conveying chamber is provided in the rotating cylinder (10); and a rotating member (32) for driving the rotating cylinder (10) to rotate is provided in the device pipe (6).

5. The mold capable of automatically cutting the glue inlet in the mold according to claim 1, characterized in that: The conveying mechanism (5) further comprises a threaded tube (33) fixedly mounted on the die (1); a threaded ring (34) threadedly connected to the threaded tube (33) is rotatably connected to the outer wall of the device tube (6); and a threaded groove (35) capable of being threadedly connected to the feed tube (3) is formed on the outer wall of the device tube (6).

6. A mold capable of automatically cutting a glue inlet in a mold according to claim 4, characterized in that: The rotating member (32) comprises a driving motor (36) fixedly mounted in the device tube (6); the output end of the driving motor (36) is coaxially fixedly connected to a driving gear (37); and the outer wall of the outer sleeve (28) is fixedly connected to an outer gear ring (38) meshing with the driving gear (37).

7. A mold capable of automatically cutting a glue inlet in a mold according to claim 5, characterized in that: The threaded ring (34) is provided with a second annular cavity (39) capable of communicating with the storage cavity (12); the threaded ring (34) is provided with a fourth pipe (40) capable of communicating with the second annular cavity (39); and the threaded ring (34) is fixedly connected with an output pipe (41) capable of communicating with the fourth pipe (40).

8. The mold capable of automatically cutting the glue inlet in the mold according to claim 3, characterized in that: The delivery hole (26) is tapered, and the hole diameter at one end facing the die (1) is smaller than the hole diameter at the other end.

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