Pen mouth injection mold

Abstract

The utility model relates to a pen mouth injection mold which comprises an upper mold and a lower mold, an upper mold plate moves in the direction close to or away from an upper mold base, a glue injection part can be movably inserted into a first end of a first cavity, a second cavity is formed in the lower mold base in a matched mode, and an injection molding insert can be inserted into the second cavity. The first mold cavity can communicate with the second mold cavity to form an injection molding cavity, injection molding can be conducted in the injection molding cavity to obtain the pen mouth, and during demolding, the upper mold plate moves in the direction away from the upper mold base, so that the glue injection piece is separated from the interior of the first mold cavity, and then the upper mold base is separated from the lower mold base; and finally, the twisted tooth sleeve and the injection molding insert can be gradually separated from the other end of the pen mouth by rotating the twisted tooth sleeve and the lower mold base to move in the direction away from the lower mold plate, the other end of the formed pen mouth can be separated from the second mold cavity, and demolding can be well conducted to obtain the injection-molded pen mouth.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a pen tip injection mold. Background Art

[0002] A pen tip injection mold is an injection mold used for producing pen tips. After plastic particles are heated and melted, the molten plastic is injected into the mold cavity in the injection mold and fills to contact the inner wall of the entire mold cavity. Then, the cooling system in the injection mold can quickly cool and solidify the plastic in the mold cavity. When the plastic is completely solidified, the injection mold will separate to obtain the formed pen tip part. By repeating this process, pen tip parts can be continuously produced.

[0003] When demolding the cooled and formed pen tip rod after injection molding, the upper and lower molds of the pen tip injection mold are opened, so that the formed pen tip is separated from the mold cavity. However, in the existing pen tip injection mold during the demolding process, due to the threaded structure on the pen tip, the formed pen tip cannot be well separated from the mold cavity, resulting in remaining in the mold cavity, which affects the injection molding efficiency of the pen tip injection mold. Summary of the Utility Model

[0004] Based on this, it is necessary to provide a pen tip injection mold.

[0005] The technical solution for the utility model to solve the above technical problems is as follows: A pen tip injection mold, comprising:

[0006] An upper mold, the upper mold comprising: an upper template and an upper mold base. A first cavity is formed on the upper mold base. The upper template moves in a direction close to or away from the upper mold base. A glue injection part is arranged on the upper template, and the glue injection part is movably inserted into the first end of the first cavity.

[0007] A lower mold, the lower mold comprising: a lower template and a lower mold base. An injection molding insert is arranged on the lower template. A thread sleeve is rotatably arranged on the injection molding insert. The first end of the injection molding insert is connected to the lower template. A second cavity is formed on the lower mold base. The lower mold base moves in a direction close to or away from the lower template. The second end of the injection molding insert is inserted into the second cavity, and the second end of the injection molding insert protrudes outside the second cavity.

[0008] When the upper mold and the lower mold are closed, the upper mold base abuts against the lower mold base. The second end of the first cavity is communicated with the second cavity to form an injection cavity, and the second end of the injection molding insert and at least part of the thread sleeve are located in the first cavity.

[0009] In one embodiment, the pen tip injection mold further comprises: a driver, the driver is arranged on the lower template, and the driver is drivingly connected to the thread sleeve.

[0010] In one embodiment, the pen tip injection mold further includes: a driving assembly, the driving assembly includes: a driving wheel, a driven wheel, a gear chain and a rotating rod, the driver is drivingly connected to the driving wheel, the rotating rod is rotatably arranged on the lower template, the driven wheel is arranged at the first end of the rotating rod, the gear chain is wound around the driving wheel and the driven wheel, a first gear is arranged at the second end of the rotating rod, a second gear is arranged at the first end of the wire twisting sleeve, and the first gear is meshed with the second gear.

[0011] In one embodiment, positioning columns are arranged on the upper template, positioning grooves are formed on the upper die blank, and the positioning columns are movably inserted into the positioning grooves.

[0012] In one embodiment, the pen tip injection mold further includes: a first guiding rod, a first through hole is formed on the upper die blank, a first guiding hole is formed on the lower mold, the first end of the first guiding rod is connected to the upper template, and the second end of the first guiding rod is inserted into the first through hole and the first guiding hole.

[0013] In one embodiment, the pen tip injection mold further includes: a second guiding rod, a second through hole is formed on the lower die blank, a second guiding hole is formed on the upper die blank, the first end of the second guiding rod is connected to the lower template, and the second end of the second guiding rod is inserted into the second through hole and the second guiding hole.

[0014] In one embodiment, the pen tip injection mold further includes: a driving plate, the driving plate moves in a direction close to or away from the lower template, a driving hole is formed on the lower template, a driving rod is arranged on the driving plate, the first end of the driving rod is connected to the driving plate, and the second end of the driving rod passes through the driving hole and is connected to the lower die blank.

[0015] In one embodiment, a limiting rod is arranged on the upper die blank, a first limiting block is arranged on the upper template, a first limiting hole is formed on the first limiting block, the first limiting block is sleeved on the first end of the limiting rod through the first limiting hole, a second limiting block is arranged on the lower template, a second limiting hole is formed on the second limiting block, the second limiting block is sleeved on the second end of the limiting rod through the second limiting hole, a first abutting groove and a second abutting groove are respectively formed at both ends of the limiting rod, a first abutting column is arranged on the first limiting block, a second abutting column is arranged on the second limiting block, the first abutting column is located in the first abutting groove, and the second abutting column is located in the second abutting groove.

[0016] In one embodiment, a glue injection port is formed on the upper template, and the glue injection port is communicated with the glue injection member.

[0017] In one embodiment, the pen tip injection mold further includes: a liquid cooling pipe. A liquid cooling channel is formed on the lower template, and a liquid cooling cavity is formed in the injection insert. The first end of the liquid cooling pipe is communicated with the liquid cooling channel, and the second end of the liquid cooling pipe is located in the liquid cooling cavity.

[0018] The beneficial effects of the present utility model are as follows: A pen tip injection mold provided by the present utility model can, by moving the upper template in the direction of approaching or departing from the upper mold base, enable the glue injection member on the upper template to be movably inserted into the first end of the first cavity. In cooperation with the second cavity formed on the lower mold base, by moving the lower mold base in the direction of approaching or departing from the lower template, the injection insert on the lower template can be inserted into the second cavity and protrude outside the second cavity. The thread sleeve is rotatably arranged on the injection insert, and the first cavity can be communicated with the second cavity to form an injection cavity, so that a pen tip can be injection molded in the injection cavity. When demolding, by moving the upper template in the direction of departing from the upper mold base, the glue injection member is separated from the first cavity. Then, the upper mold base and the lower mold base are separated, so that one end of the molded pen tip is separated from the first cavity. Finally, by rotating the thread sleeve and moving the lower mold base in the direction of departing from the lower template, the thread sleeve and the injection insert can be gradually separated from the other end of the pen tip, so that the other end of the molded pen tip is separated from the second cavity, and the injection molded pen tip can be demolded well. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of a pen tip injection mold for an embodiment;

[0021] Figure 2 It is a schematic cross-sectional structural diagram of a pen tip injection mold for an embodiment;

[0022] Figure 3 It is a schematic structural diagram of an upper mold for an embodiment;

[0023] Figure 4 It is a three-dimensional exploded structural diagram of an upper mold for an embodiment;

[0024] Figure 5 It is a schematic structural diagram of a lower mold for an embodiment;

[0025] Figure 6 Schematic diagram of the three-dimensional exploded structure of the lower mold of an embodiment;

[0026] Figure 7 Schematic diagram of the structure of the driver and the drive assembly of an embodiment.

[0027] In the drawings, 10, pen tip injection mold; 100, upper mold; 101, injection cavity; 110, upper template; 111, positioning column; 120, upper mold base; 121, first cavity; 122, positioning groove; 200, lower mold; 210, lower template; 211, drive hole; 220, lower mold base; 221, second cavity; 310, injection insert; 311, liquid cooling cavity; 320, die bushing; 400, glue injection part; 500, driver; 510, driving wheel; 520, driven wheel; 530, gear chain; 540, rotating rod; 550, first gear; 560, second gear; 610, first guide rod; 611, first through hole; 612, first guide hole; 620, second guide rod; 621, second guide hole; 622, second through hole; 700, drive plate; 710, drive rod; 810, limiting rod; 811, first abutting groove; 812, second abutting groove; 820, first limiting block; 821, first limiting hole; 822, first abutting post; 830, second limiting block; 831, second limiting hole; 832, second abutting post; 900, glue injection port; 910, liquid cooling pipe; 920, liquid cooling channel. Detailed implementation manners

[0028] It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The following will further describe the technical solutions of the present invention with reference to the drawings of the embodiments of the present invention. The present invention is not limited to the following specific implementation manners.

[0029] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be understood as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0030] In one embodiment, as Figure 1 , Figure 2 ,Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , a pen tip injection mold 10 includes an upper mold 100 and a lower mold 200. The upper mold 100 includes an upper template 110 and an upper mold base 120. A first cavity 121 is formed in the upper mold base 120. The upper template 110 moves in a direction close to or away from the upper mold base 120. A glue injection part 400 is arranged on the upper template 110. The glue injection part 400 is movably inserted into the first end of the first cavity 121. The lower mold 200 includes a lower template 210 and a lower mold base 220. An injection molding insert 310 is arranged on the lower template 210. A thread sleeve 320 is rotatably arranged on the injection molding insert 310. The first end of the injection molding insert 310 is connected to the lower template 210. A second cavity 221 is formed in the lower mold base 220. The lower mold base 220 moves in a direction close to or away from the lower template 210. The second end of the injection molding insert 310 is inserted into the second cavity 221, and the second end of the injection molding insert 310 protrudes to the outside of the second cavity 221. When the upper mold 100 and the lower mold 200 are closed, the upper mold base 120 abuts against the lower mold base 220. The second end of the first cavity 121 communicates with the second cavity 221 to form an injection cavity 101, and the second end of the injection molding insert 310 and at least a part of the thread sleeve 320 are located in the first cavity 121.

[0031] In this embodiment, the upper template 110 moves in a direction close to or away from the upper die base 120. When the upper template 110 moves to abut against the upper die base 120, the glue injection part 400 on the upper template 110 can be inserted into the first end of the first cavity 121. When the upper template 110 moves in a direction away from the upper die base 120, the glue injection part 400 on the upper template 110 can be separated from the first cavity 121. In cooperation with the second cavity 221 formed on the lower die base 220, the lower die base 220 moves in a direction close to or away from the lower template 210. When the lower die base 220 moves to abut against the lower template 210, the injection molding insert 310 on the lower template 210 can be inserted into the second cavity 221 and protrude outside the second cavity 221. At this time, the part of the thread sleeve 320 located at the second end of the injection molding insert 310 correspondingly protrudes outside the second cavity 221, that is, the second end of the thread sleeve 320 correspondingly protrudes outside the second cavity 221. When the lower die base 220 moves in a direction away from the lower template 210, the injection molding insert 310 and the thread sleeve 320 on the lower template 210 can be separated from the second cavity 221. The thread sleeve 320 is rotatably arranged on the injection molding insert 310. The first cavity 121 can communicate with the second cavity 221 to form an injection cavity 101, that is, the side walls of the first cavity 121, the side walls of the second cavity 221, the injection molding insert 310 and the thread sleeve 320 jointly form the injection cavity 101 at intervals, so that a pen tip can be injection molded in the injection cavity 101.

[0032] In this embodiment, when the injection molding is completed and the pen tip is demolded, the upper template 110 moves in a direction away from the upper die base 120, so that the glue injection part 400 is separated from the first cavity 121, that is, the glue injection part 400 is separated from one end of the formed pen tip. Then the upper die base 120 is separated from the lower die base 220, so that one end of the formed pen tip is separated from the first cavity 121. Finally, by rotating the thread sleeve 320, the lower die base 220 moves in a direction away from the lower template 210. Since the thread on the thread sleeve 320 is adapted to the thread of the pen tip, the thread sleeve 320 and the injection molding insert 310 can be gradually separated from the other end of the pen tip, so that the other end of the formed pen tip is separated from the second cavity 221, and the injection molded pen tip can be demolded well.

[0033] In one embodiment, as Figure 1 and Figure 5 shown, the pen tip injection mold 10 further includes: a driver 500, the driver 500 is arranged on the lower template 210, and the driver 500 is drivingly connected to the thread sleeve 320. Specifically, by arranging the driver 500 to be drivingly connected to the thread sleeve 320, a driving force can be provided for the thread sleeve 320 to rotate on the injection molding insert 310. The driver 500 is a motor, so that the thread sleeve 320 can be driven to rotate on the injection molding insert 310.

[0034] In one embodiment, as Figure 5 and Figure 7 shown, the pen tip injection mold 10 further includes: a driving assembly, the driving assembly includes: a driving wheel 510, a driven wheel 520, a gear chain 530 and a rotating rod 540, the driver 500 is drivingly connected to the driving wheel 510, the rotating rod 540 is rotatably arranged on the lower template 210, the driven wheel 520 is arranged at the first end of the rotating rod 540, the gear chain 530 is wound around the driving wheel 510 and the driven wheel 520, a first gear 550 is arranged at the second end of the rotating rod 540, a second gear 560 is arranged at the first end of the twisting sleeve 320, and the first gear 550 is meshed with the second gear 560. Specifically, the driving wheel 510 and the driven wheel 520 are arranged at intervals, the gear chain 530 is wound around the driving wheel 510 and the driven wheel 520 in a transmission manner, by driving the driving wheel 510 to rotate through the driver 500, the rotating rod 540 connected to the driven wheel 520 can be driven to rotate, and in cooperation with the meshing of the first gear 550 at the second end of the rotating rod 540 and the second gear 560 at the first end of the twisting sleeve 320, the driving of the twisting sleeve 320 to rotate on the injection insert 310 can be realized.

[0035] In one embodiment, as Figure 4 shown, a positioning column 111 is arranged on the upper template 110, a positioning groove 122 is formed on the upper die blank 120, and the positioning column 111 is movably inserted into the positioning groove 122. Specifically, the number of the positioning columns 111 is set to be multiple, and the positioning columns 111 are evenly distributed on one surface of the upper template 110 facing the upper die blank 120, the number of the positioning grooves 122 is equal to the number of the positioning columns 111. When the upper template 110 moves to abut against the upper die blank 120, by inserting the positioning columns 111 on the upper template 110 into the positioning grooves 122 on the upper die blank 120, a positioning function can be achieved, so that the glue injection part 400 on the upper template 110 can accurately enter the first end of the first cavity 121.

[0036] In one embodiment, as Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the pen tip injection mold 10 further includes: a first guide rod 610. A first through hole 611 is formed on the upper mold base 120, and a first guide hole 612 is formed on the lower mold 200. The first end of the first guide rod 610 is connected to the upper template 110, and the second end of the first guide rod 610 is inserted into the first through hole 611 and the first guide hole 612. Specifically, guide holes are respectively formed on the lower template 210 and the lower mold base 220 and communicate to form the first guide hole 612. By inserting the first guide rod 610 into the first through hole 611 on the upper mold base 120 and the first guide hole 612 on the lower mold 200, a guiding effect can be achieved. Not only can the upper mold 100 and the lower mold 200 be well opened or closed, but also the upper template 110 can move better in the direction of approaching or departing from the upper mold base 120.

[0037] In one embodiment, as Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the pen tip injection mold 10 further includes: a second guide rod 620. A second through hole 622 is formed on the lower mold base 220, and a second guide hole 621 is formed on the upper mold base 120. The first end of the second guide rod 620 is connected to the lower template 210, and the second end of the second guide rod 620 is inserted into the second through hole 622 and the second guide hole 621. Specifically, by inserting the second guide rod 620 into the second through hole 622 on the lower mold base 220 and the second guide hole 621 on the upper mold base 120, a further guiding effect can be achieved. Not only can the upper mold 100 and the lower mold 200 be better opened or closed, but also the lower mold base 220 can move better in the direction of approaching or departing from the lower template 210.

[0038] In one embodiment, as Figure 2 and Figure 6As shown, the pen tip injection mold 10 further includes: a driving plate 700 that moves in a direction close to or away from the lower template 210. A driving hole 211 is formed on the lower template 210. A driving rod 710 is provided on the driving plate 700. The first end of the driving rod 710 is connected to the driving plate 700, and the second end of the driving rod 710 passes through the driving hole 211 and is connected to the lower die body 220. Specifically, the driving plate 700 and the lower die body 220 are respectively located on both sides of the lower template 210. The driving plate 700 is connected to the lower die body 220 through the driving rod 710. By driving the driving plate 700 to move in a direction close to or away from the lower template 210 by an external driving device, the lower die body 220 connected to the driving rod 710 can be driven to move in a direction close to or away from the lower template 210, so that the lower die body 220 can move in a direction close to or away from the lower template 210, and the injection insert 310 on the lower template 210 can be inserted into the second cavity 221 on the lower die body 220.

[0039] In one embodiment, as Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, a limit rod 810 is provided on the upper die base 120, a first limit block 820 is provided on the upper template 110, a first limit hole 821 is formed in the first limit block 820, and the first limit block 820 is sleeved on the first end of the limit rod 810 through the first limit hole 821. A second limit block 830 is provided on the lower template 210, a second limit hole 831 is formed in the second limit block 830, and the second limit block 830 is sleeved on the second end of the limit rod 810 through the second limit hole 831. First abutting grooves 811 and second abutting grooves 812 are respectively formed at both ends of the limit rod 810. A first abutting post 822 is provided on the first limit block 820, and a second abutting post 832 is provided on the second limit block 830. The first abutting post 822 is located in the first abutting groove 811, and the second abutting post 832 is located in the second abutting groove 812. Specifically, the number of the first limit blocks 820 is set to be multiple, and the first limit blocks 820 are evenly distributed on the outer surface of the upper template 110. The number of the second limit blocks 830 and the number of the limit rods 810 are equal to the number of the first limit blocks 820. The first limit holes 821 on each first limit block 820 are aligned with the second limit holes 831 on a second limit block 830, and the limit rod 810 is located in the first limit hole 821 and the second limit hole 831, that is, the first limit block 820 and the second limit block 830 can be respectively located at both ends of the limit rod 810. By the first abutting post 822 on the first limit block 820 being in movable abutment with the side wall of the first abutting groove 811, the moving stroke of the upper template 110 can be limited, that is, the distance between the upper template 110 and the upper die base 120 can be limited. By the second abutting post 832 on the second limit block 830 being in movable abutment with the side wall of the second abutting groove 812, the moving stroke of the lower die 200 can be limited, that is, the distance between the lower die 200 and the upper die base 120 can be limited, which is convenient for the upper die 100 and the lower die 200 to be closed again.

[0040] In one embodiment, as Figure 1 and Figure 4 shown, a glue injection port 900 is formed in the upper template 110, and the glue injection port 900 is communicated with the glue injection member 400. Specifically, the glue injection port 900 is formed on the outer surface of the upper template 110. A glue injection channel is provided inside the upper template 110. The glue injection port 900 is communicated with the inside of the glue injection member 400 through the glue injection channel. In this way, the molten plastic can move to the inside of the glue injection member 400 through the glue injection port 900 and the glue injection channel, and then be injected into the injection cavity 101 through the glue injection member 400, and the pen tip is obtained by injection molding.

[0041] In one embodiment, as Figure 2As shown in the figure, the pen tip injection mold 10 further includes: a liquid cooling pipe 910. A liquid cooling channel 920 is formed on the lower template 210, and a liquid cooling cavity 311 is formed in the injection molding insert 310. The first end of the liquid cooling pipe 910 communicates with the liquid cooling channel 920, and the second end of the liquid cooling pipe 910 is located in the liquid cooling cavity 311. Specifically, by providing the liquid cooling pipe 910, which communicates with the liquid cooling channel 920 and the liquid cooling cavity 311 respectively, in this way, the external coolant can be transported through the liquid cooling channel 920 into the liquid cooling pipe 910 and then enter the liquid cooling cavity 311 of the injection molding insert 310, so as to cool and solidify the plastic in the injection cavity 101, and thus the pen tip can be quickly injection molded.

[0042] Compared with the prior art, the present utility model has at least the following advantages:

[0043] A pen tip injection mold provided by the present utility model, through the movement of the upper template in the direction of approaching or departing from the upper mold base, the glue injection part on the upper template can be movably inserted into the first end of the first cavity. Cooperating with the second cavity formed on the lower mold base, the lower mold base moves in the direction of approaching or departing from the lower template, and the injection molding insert on the lower template can be inserted into the second cavity and protrude outside the second cavity. The die holder is rotatably arranged on the injection molding insert, and the first cavity can communicate with the second cavity to form an injection cavity, so that the pen tip can be injection molded in the injection cavity. When demolding, the upper template moves in the direction of departing from the upper mold base, so that the glue injection part is separated from the first cavity. Then the upper mold base and the lower mold base are separated, so that one end of the formed pen tip is separated from the first cavity. Finally, by rotating the die holder and the lower mold base moves in the direction of departing from the lower template, the die holder and the injection molding insert can be gradually separated from the other end of the pen tip, so that the other end of the formed pen tip is separated from the second cavity, and the injection molded pen tip can be well demolded.

[0044] Obviously, the above-mentioned embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the embodiments of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A pen tip injection mold, characterized in that, Comprising: An upper mold, the upper mold comprising: an upper template and an upper mold base, a first cavity being formed in the upper mold base, the upper template moving in a direction close to or away from the upper mold base, a glue injection member being provided on the upper template, and the glue injection member being movably inserted into the first end of the first cavity; A lower mold, the lower mold comprising: a lower template and a lower mold base, an injection molding insert being provided on the lower template, a thread sleeve being rotatably provided on the injection molding insert, a first end of the injection molding insert being connected to the lower template, a second cavity being formed in the lower mold base, the lower mold base moving in a direction close to or away from the lower template, a second end of the injection molding insert being inserted into the second cavity, and the second end of the injection molding insert protruding outside the second cavity; When the upper mold and the lower mold are closed, the upper mold base abuts against the lower mold base, a second end of the first cavity communicates with the second cavity to form an injection molding cavity, and the second end of the injection molding insert and at least a part of the thread sleeve are located in the first cavity.

2. The pen tip injection mold according to claim 1, characterized in that, Further comprising: A driver, the driver being provided on the lower template, and the driver being drivingly connected to the thread sleeve.

3. The pen tip injection mold according to claim 2, characterized in that, Further comprising: A driving assembly, the driving assembly comprising: a driving wheel, a driven wheel, a gear chain and a rotating rod, the driver being drivingly connected to the driving wheel, the rotating rod being rotatably provided on the lower template, the driven wheel being provided at a first end of the rotating rod, the gear chain being wound around the driving wheel and the driven wheel, a first gear being provided at a second end of the rotating rod, a second gear being provided at a first end of the thread sleeve, and the first gear being meshed with the second gear.

4. The pen tip injection mold according to claim 1, wherein A positioning post is provided on the upper template, a positioning groove is formed in the upper mold base, and the positioning post is movably inserted into the positioning groove.

5. The pen tip injection mold according to claim 1, characterized in that, Further comprising: A first guiding rod, a first through hole being formed in the upper mold base, a first guiding hole being formed in the lower mold, a first end of the first guiding rod being connected to the upper template, and a second end of the first guiding rod being inserted into the first through hole and the first guiding hole.

6. The pen tip injection mold according to claim 5, characterized in that, Further comprising: A second guiding rod, a second through hole being formed in the lower mold base, a second guiding hole being formed in the upper mold base, a first end of the second guiding rod being connected to the lower template, and a second end of the second guiding rod being inserted into the second through hole and the second guiding hole.

7. The pen tip injection mold according to claim 6, characterized in that, Further comprising: A driving plate, the driving plate moving in a direction close to or away from the lower template, a driving hole being formed in the lower template, a driving rod being provided on the driving plate, a first end of the driving rod being connected to the driving plate, and a second end of the driving rod passing through the driving hole and being connected to the lower mold base.

8. The pen tip injection mold according to claim 1, characterized in that A limiting rod is provided on the upper die base, a first limiting block is provided on the upper template, a first limiting hole is formed in the first limiting block, the first limiting block is sleeved on the first end of the limiting rod through the first limiting hole, a second limiting block is provided on the lower template, a second limiting hole is formed in the second limiting block, the second limiting block is sleeved on the second end of the limiting rod through the second limiting hole, a first abutting groove and a second abutting groove are respectively formed at both ends of the limiting rod, a first abutting post is provided on the first limiting block, a second abutting post is provided on the second limiting block, the first abutting post is located in the first abutting groove, and the second abutting post is located in the second abutting groove.

9. The pen tip injection mold according to claim 1, characterized in that, A glue injection port is formed in the upper template, and the glue injection port is communicated with the glue injection part.

10. The pen tip injection mold according to claim 9, characterized in that, Further comprising: A liquid cooling pipe, a liquid cooling channel is formed in the lower template, a liquid cooling cavity is formed in the injection molding insert, the first end of the liquid cooling pipe is communicated with the liquid cooling channel, and the second end of the liquid cooling pipe is located in the liquid cooling cavity.

Images