Injection mold and method of using the same

Abstract

The present application provides an injection mold and a method for using the same, which relate to the technical field of cup cover processing. The mold can be formed into a cup cover product with a complex structure. Moreover, under the locking action of a locking mechanism, when closing the mold, only the B plate and the C plate can be matched first, and the C plate and the D plate can be matched later, so that the bottom mold and the outer mold are matched first, and then the first inner mold module of the inner mold slides along the radial direction of the mold hole in a direction away from the central axis of the mold hole M, thereby limiting the mold closing sequence and avoiding the problem of damage to the mold caused by the first inner mold module when the bottom mold and the outer mold are matched.

Description

Technical Field

[0001] The present application relates to the technical field of cup cover processing, and in particular to an injection mold and a method for using the same. Background Art

[0002] Some cup lids are formed by injection molding, and how to design the injection mold is a problem that needs to be solved by technicians in this field. Moreover, for cup lids with more complex shapes, the structure of the injection mold is also more complex. During the production process, it is easy to have an improper mold opening and closing sequence, resulting in unqualified products and mold damage. Therefore, it is necessary to avoid improper mold opening and closing sequence. Summary of the invention

[0003] In order to solve the above problems, the present application provides an injection mold, comprising a top mold, an outer mold, an inner mold, a bottom mold and a driving wedge, wherein the outer mold encloses a mold hole, the top end of the inner mold passes through the bottom mold and the bottom end opening of the mold hole and extends into the mold hole, and a cavity is formed between the inner mold and the mold hole and between the top mold and the bottom mold, the driving wedge is provided with a first driving inclined surface, and the inner mold comprises two first inner mold modules arranged opposite to each other, and the first inner mold modules are provided with a first matching inclined surface;

[0004] It also includes an A plate, a B plate, a C plate and a D plate arranged in sequence from top to bottom, the top mold is fixed to the A plate, the outer mold is connected to the B plate and can slide relative to the B plate along the radial direction of the mold hole, the bottom mold is fixed to the B plate, the two first inner mold modules are connected to the C plate, and the driving wedge is fixed to the D plate. When the mold is closed, the first driving inclined surface of the driving wedge is in contact with the first matching inclined surfaces of the two first inner mold modules to drive the two first inner mold modules to slide relative to the C plate along the radial direction of the mold hole;

[0005] It also includes a locking mechanism, which includes a first locking rod, a second locking rod, and a sliding locking block. The first locking rod is fixed to the side of the B plate, the sliding locking block is connected to the side of the C plate and can slide along the width direction of the C plate, the second locking rod is fixed to the side of the D plate, the first locking rod is provided with a second driving inclined surface, and the sliding locking block is provided with a second matching inclined surface. When the B plate and the C plate are separated, the sliding locking block is located at a first position, and the sliding locking block resists an end of the second locking rod close to the C plate. During the alignment of the B plate and the C plate, the second driving inclined surface is fitted with the second matching inclined surface, driving the sliding locking block to slide from the first position to the second position where it does not resist the second locking rod.

[0006] In one embodiment of the injection mold, the locking mechanism includes an elastic member, and after the B plate, the C plate and the D plate are separated, the sliding lock block slides from the second position to the first position under the elastic force of the elastic member.

[0007] In one embodiment of the injection mold, the sliding locking block is provided with a first socket, a side wall of the first socket forms the second matching inclined surface, and the first socket is used for plugging the first locking rod.

[0008] In one embodiment of the injection mold, the sliding locking block is provided with a second socket, and the second socket is used to plug the second locking rod; when the sliding locking block is located at the first position, the second socket is staggered with the second locking rod, so that the second locking rod cannot be inserted into the second socket; when the sliding locking block is located at the second position, the second socket is aligned with the second locking rod, so that the second locking rod can be inserted into the second socket.

[0009] An embodiment of the injection mold, the locking mechanism includes a lock shell, the lock shell is fixed to the side of the C plate, the sliding lock block is located in the lock shell, and the lock shell is provided with a first lock port for inserting the first lock rod and a second lock port for inserting the second lock rod.

[0010] An embodiment of an injection mold, the outer mold includes two oppositely arranged first outer mold modules and two second outer mold modules, the two first outer mold modules can slide relative to the B plate along the first direction to mate with or separate from each other, the two second outer mold modules can slide along the second direction, the mating surfaces of the two first outer mold modules are respectively provided with two grooves and two notches, in the mating state, the two second outer mold modules are respectively inserted in the channels formed by the two mutually mating notches, one side of one second outer mold module and the two mutually mating grooves are together enclosed to form a mold hole, and the other second outer mold module and the other two mutually mating grooves are together enclosed to form another mold hole, wherein the first direction and the second direction are perpendicular to each other.

[0011] An implementation manner of the injection mold, the injection mold includes an ejection mechanism, the inner mold includes two second inner mold modules arranged opposite to each other, and the bottom ends of the two second inner mold modules are connected to the ejection mechanism through a connecting rod.

[0012] An embodiment of an injection mold, the injection mold includes a mold opening mechanism, the mold opening mechanism includes an E plate, an F plate, a G plate and an H plate stacked in sequence from top to bottom, the E plate is located on the bottom side of the D plate, the G plate and the H plate are fixed together, and also includes a first push rod and a second push rod, the bottom end of the first push rod is fixed to the G plate, the top end of the first push rod is fixed to the C plate, the bottom end of the second push rod is fixed to the E plate, the top end of the second push rod is fixed to the B plate, and the bottom end of the ejection mechanism is fixed to the F plate.

[0013] An embodiment of the injection mold, the injection mold also includes a panel, a bottom plate and two relatively arranged fixed blocks, the panel is located on the top side of the A plate and fixed together with the A plate, the panel is provided with a feed port, the bottom plate is located on the bottom side of the H plate and fixed together with the D plate, the two fixed blocks are fixed between the D plate and the bottom plate, and are enclosed with the D plate and the bottom plate to form a receiving groove, the mold opening mechanism and the ejection mechanism are located in the receiving groove.

[0014] The present application also provides a method for using an injection mold, wherein the injection mold is any of the injection molds described above, and when the mold is opened, the A plate first moves toward the top side to separate from the B plate, and then the B plate and the C plate move toward the top side together to separate the C plate from the D plate, and then the B plate moves toward the top side to separate the B plate from the C plate; when the mold is closed, the B plate first moves toward the bottom side to align the B plate with the C plate, and then the B plate and the C plate move toward the bottom side together to align the C plate with the D plate, and then the A plate moves toward the bottom side to align with the B plate.

[0015] The above-mentioned injection mold can form cup cover products with complex structures. Moreover, under the locking action of the locking mechanism, when closing the mold, only the B plate and the C plate can be matched first, and the C plate and the D plate can be matched later, so that the bottom mold and the outer mold are matched first, and then the first inner mold module of the inner mold slides along the radial direction of the mold hole away from the central axis of the mold hole, which limits the mold closing order and avoids the problem of mold damage caused by the first inner mold module hitting the bottom mold and the outer mold when they are matched. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an embodiment of the injection mold provided in the present application;

[0017] Figure 2 for Figure 1 a cross-sectional view of;

[0018] Figure 3 for Figure 2 A magnified view of the part within the middle circle;

[0019] Figure 4 for Figure 1 Another cross-sectional view of;

[0020] Figure 5 for Figure 4 A magnified view of the part within the middle circle;

[0021] Figure 6 This is a three-dimensional picture of the cup cover product;

[0022] Figure 7 is an enlarged view of the locking mechanism;

[0023] Figure 8 It is a cross-sectional view of the locking mechanism in the mold closing state;

[0024] Fig. 9 It is a cross-sectional view of the locking mechanism in the mold opening state;

[0025] Fig.10 A three-dimensional diagram of an embodiment of a sliding lock block;

[0026] Fig.11 A three-dimensional diagram of an embodiment of a lock housing;

[0027] Fig.12 A three-dimensional diagram of an embodiment of a first inner mold module;

[0028] Fig.13 A three-dimensional diagram of an embodiment of a first outer mold module;

[0029] Fig.14 A perspective view of an embodiment of a second outer mold module;

[0030] Fig.15 A three-dimensional diagram of an embodiment of a top mold;

[0031] Fig.16 A three-dimensional diagram of an embodiment of a bottom mold;

[0032] Fig.17 A perspective view of an embodiment of a second inner mold module connected with a connecting rod;

[0033] Fig.18 A perspective view of another embodiment of a second inner mold module connected with a connecting rod;

[0034] Fig.19 for Figure 1 Another cross-sectional view of .

[0035] The following are the descriptions of the reference numerals:

[0036] 10-top mold, 101-convex part;

[0037] 20-outer mold, 201-first outer mold module, 201a-molded groove, 201b-groove, 201c-channel groove, 202-second outer mold module, M-mold hole;

[0038] 30-inner mold, 301-first inner mold module, 301a-first matching slope, 301b-T-shaped block, 301c-T-shaped groove, 302-second inner mold module;

[0039] 40-bottom mold, 40a-through hole, 40b-slot;

[0040] 50 - driving inclined wedge, 501 - first driving inclined surface;

[0041] 60-locking mechanism, 601-first locking rod, 601a-second driving inclined surface, 602-second locking rod, 603-sliding locking block, 603a-second matching inclined surface, 603b-first socket, 603c-second socket, 604-elastic member, 605-lock housing, 605a-first locking port, 605b-second locking port;

[0042] 70- ejection mechanism;

[0043] 80-panel, 80a-feed port, 80b-first bushing; 90-bottom plate; 100-fixing block; 110-accommodating groove, X-shaped cavity, 120-first sliding member, 130-fixing member, 140-second sliding member, 150-second bushing, 160-connecting rod, 170-first push rod, 180-second push rod. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] like Figure 1 As shown, the injection mold provided by the present application includes an A plate, a B plate, a C plate and a D plate arranged in sequence from top to bottom.

[0046] like Figure 2-Figure 5 As shown, the injection mold further includes a top mold 10, an outer mold 20, an inner mold 30, a bottom mold 40 and a driving wedge 50. Figure 3 As shown, the outer mold 20 encloses a mold hole M, which is located between the top mold 10 and the bottom mold 40. The top end of the inner mold 30 passes through the bottom mold 40 and the bottom end opening of the mold hole M and extends into the mold hole M. A cavity X is formed between the inner mold 30 and the mold hole M and between the top mold 10 and the bottom mold 40. The injection material enters the mold cavity X and solidifies in the mold cavity X to form a mold cavity X. Figure 6 Cup lid product shown.

[0047] like Figure 2As shown, the top mold 10 is fixed to the A plate. The outer mold 20 is slidably connected to the B plate and can slide relative to the B plate along the radial direction of the mold hole M. The bottom mold 40 is fixed to the B plate. The inner mold 30 includes two first inner mold modules 301, and the two first inner mold modules 301 are arranged opposite to each other in the first direction. The two first inner mold modules 301 are slidably connected to the C plate and can slide relative to the C plate along the radial direction of the mold hole M. Figure 3 As shown, the first inner mold module 301 is provided with a first matching inclined surface 301a, and the driving wedge 50 is provided with a first driving inclined surface 501, and the first driving inclined surface 501 and the first matching inclined surface 301a have the same inclination and slope. When the mold is closed, the first driving inclined surface 501 is in contact with the first matching inclined surfaces 301a of the two first inner mold modules 301 to drive the two first inner mold modules 301 to slide along the radial direction of the mold hole M in a direction away from the central axis of the mold hole M.

[0048] like Figure 7 and Figure 8 As shown, the injection mold further includes a locking mechanism 60, which includes a first locking rod 601, a second locking rod 602, and a sliding locking block 603. The first locking rod 601 is fixed to the side of the B plate. The sliding locking block 603 is connected to the side of the C plate and can slide along the width direction of the C plate. The second locking rod 602 is fixed to the side of the D plate. The first locking rod 601 is provided with a second driving inclined surface 601a, and the sliding locking block 603 is provided with a second matching inclined surface 603a.

[0049] like Fig. 9 As shown, when the B plate and the C plate are separated, the sliding lock block 603 slides to the first position, and the sliding lock block 603 resists the end of the second locking rod 602 close to the C plate, so that the C plate and the D plate cannot be matched. During the matching process of the B plate and the C plate, the second driving inclined surface 601a of the first locking rod 601 is fitted with the second matching inclined surface 603a of the sliding lock block 603, driving the sliding lock block 603 to slide from the first position to the second position (i.e., from the first position to the second position) where it no longer resists the second locking rod 602. Fig. 9 Slide left to Figure 8 As shown in the figure), the C plate and the D plate can be aligned.

[0050] The above-mentioned injection mold can form cup cover products with complex structures, and under the locking action of the locking mechanism 60, when closing the mold, only the B plate and the C plate can be matched first, and the C plate and the D plate can be matched later, so that the bottom mold 40 and the outer mold 20 are matched first, and then the first inner mold module 301 of the inner mold 30 slides along the radial direction of the mold hole M away from the central axis of the mold hole M, which limits the mold closing order and avoids the problem of mold damage caused by the first inner mold module 301 when the bottom mold 40 and the outer mold 20 are matched.

[0051] In some embodiments, as shown in the figure, Fig. 9As shown, the locking mechanism 60 includes an elastic member 604. After the B plate, the C plate and the D plate are separated, the sliding lock block 603 can slide from the second position to the first position (i.e., from the second position to the first position) under the elastic force of the elastic member 604. Figure 8 Slide right to the indicated position Fig. 9 The elastic member 604 is provided, and the arrangement orientation of the injection mold is not limited when in use, for example, the top side is at the top and the bottom side is at the bottom, or the top side is at the left and the bottom side is at the right. Alternatively, in some embodiments, the locking mechanism 60 is not provided with the elastic member 604, and after the B plate, the C plate and the D plate are separated, the sliding lock block 603 slides from the second position to the first position (i.e., from the Figure 8 Slide right to the indicated position Fig. 9 In this case, the injection mold needs to be arranged in a specific orientation when used.

[0052] In some embodiments, such as Fig.10 As shown, the sliding lock block 603 is provided with a first socket 603 b , a side wall of the first socket 603 b forms the second matching inclined surface 603 a , and the first socket 603 b is used to insert the first locking rod 601 .

[0053] In some embodiments, such as Fig.10 As shown, the sliding lock block 603 is provided with a second socket 603c, and the second socket 603c is used to insert the second locking rod 602. Figure 8 As shown, when the sliding lock block 603 is in the second position, the second socket 603c is aligned with the second locking rod 602, so that the second locking rod 602 can be inserted into the second socket 603c. Fig. 9 As shown, when the sliding locking block 603 is located at the first position, the second socket 603c is staggered with the second locking rod 602, so that the second locking rod 602 cannot be inserted into the second socket 603c.

[0054] In some embodiments, such as Figure 7 As shown, the locking mechanism 60 includes a lock housing 605. The lock housing 605 is fixed to the side of the C plate. Fig.11 As shown, the lock housing 605 is provided with a first lock opening 605a for inserting the first lock rod 601 and a second lock opening 605b for inserting the second lock rod 602. In the illustrated embodiment, the first lock opening 605a and the second lock opening 605b both penetrate two opposite side walls of the lock housing 605. Figure 8 As shown, the sliding lock block 603 is located in the lock housing 605. When the sliding lock block 603 is located in the second position, the second socket 603c is aligned with the second lock socket 605b, so that the second locking rod 602 can be inserted into the second socket 603c. Fig. 9 As shown, when the sliding lock block 603 is located at the first position, the second insertion opening 603c is staggered with the second locking opening 605b, so that the second locking rod 602 cannot be inserted into the second insertion opening 603c.

[0055] In some embodiments, such as Fig.12 As shown, the first inner mold module 301 is provided with a T-shaped groove 301c, which is used to cooperate with the T-shaped ridge of the driving wedge 50. One side surface of the T-shaped ridge forms the first driving inclined surface 501, and one side wall surface of the T-shaped groove 301c forms the first matching inclined surface 301a.

[0056] In some embodiments, such as Fig.12 As shown, the first inner mold module 301 is provided with a T-shaped block 301b, and a fixing member 130 is fixed on the C plate (see Figure 2 ), a T-shaped slide is provided on the fixing member 130, and the T-shaped block 301b is used for sliding connection with the T-shaped slide on the fixing member 130, so that the first inner mold module 301 can slide relative to the C plate along the first direction.

[0057] In some embodiments, such as Figure 2 As shown, the outer mold 20 includes two first outer mold modules 201. The two first outer mold modules 201 are arranged opposite to each other in the first direction, and the two first outer mold modules 201 slide toward each other along the first direction to mate or slide away from each other to separate. The two first outer mold modules 201 are each fixed to a first sliding member 120, and the first sliding member 120 is slidably connected to the slideway on the B plate. When the first sliding member 120 slides on the B plate along the first direction, it drives the first outer mold module 201 to slide along the first direction. Fig.13 As shown, two grooves 201a and two concave grooves 201b are respectively arranged on the mating surfaces of the two first outer mold modules 201. After mating, the grooves 201a of the two first outer mold modules 201 are mated with each other, and the concave grooves 201b of the two first outer mold modules 201 are mated with each other to form a channel. Figure 4 As shown, the outer mold 20 also includes two second outer mold modules 202. The two second outer mold modules 202 are each fixed to a second sliding member 140, and the second sliding member 140 is slidably connected to the slideway on the B plate. When the second sliding member 140 slides on the B plate along the second direction, it drives the second outer mold module 202 to slide along the second direction, so that the two second outer mold modules 202 are inserted into or withdrawn from the channel. In the inserted state, as shown in FIG. Figure 4 As shown, the right side of the second outer mold module 202 on the left and the two mutually matched grooves 201a of the two first outer mold modules 201 together enclose a mold hole M, and the left side of the second outer mold module 202 on the right and the other two mutually matched grooves 201a of the two first outer mold modules 201 together enclose another mold hole M. The first direction and the second direction are two directions perpendicular to each other, and both of them are perpendicular to the axial direction of the mold hole M or the radial direction of the mold hole M.

[0058] In some embodiments, such as Fig.15As shown, the top mold 10 has two protrusions 101. In the mold closing state, the bottom end surfaces of the two protrusions 101 are respectively fitted with the top end surfaces of the two groups of inner molds 30 in the two mold holes M.

[0059] In some embodiments, such as Fig.16 As shown, the bottom mold 40 is provided with two through holes 40a for the inner mold 30 to pass through. The bottom mold 40 is also provided with two slots 40b. In the mold closing state, the two slots 40b are respectively aligned with the two channels between the two first outer mold modules 201, and the two second outer mold modules 202 are respectively inserted in the two groups of aligned slots 40b and channels.

[0060] In some embodiments, Figure 4 As shown, the injection mold includes an ejection mechanism 70. The inner mold 30 includes two second inner mold modules 302, and the two second inner mold modules 302 are arranged opposite to each other in the second direction. The bottom ends of the second inner mold modules 302 are connected to the ejection mechanism 70 through the connecting rod 160. When the ejection mechanism 70 moves toward the top side or the bottom side, it can drive the second inner mold modules 302 to move toward the top side or the bottom side. Fig.17 and Fig.18 understand, Fig.17 and Fig.18 A perspective view of two second inner mold modules 302 and two connecting rods 160 connected thereto is provided.

[0061] In some embodiments, such as Fig.19 As shown, the injection mold includes a mold opening mechanism, which includes an E plate, an F plate, a G plate, and an H plate stacked in sequence from top to bottom, the E plate is located at the bottom side of the D plate, and the G plate and the H plate are fixed together. The mold opening mechanism also includes a first ejector rod 170 and a second ejector rod 180. The bottom end of the first ejector rod 170 is fixed to the G plate, and the top end of the first ejector rod 170 is fixed to the C plate. The bottom end of the second ejector rod 180 is fixed to the E plate, and the top end of the second ejector rod 180 is fixed to the B plate. The bottom end of the ejection mechanism 70 is fixed to the F plate. When the mold is opened, the G plate first moves toward the top side, so that the E plate, the F plate, the first ejector rod 170, the second ejector rod 180, and the ejection mechanism 70 move toward the top side together, driving the B plate and the C plate to move toward the top side together, so that the C plate is separated from the D plate. Then the E plate moves toward the top side, so that the second ejector rod 180 moves toward the top side, driving the B plate to move toward the top side, so that the B plate is separated from the C plate.

[0062] In some embodiments, such as Figure 2 As shown, the injection mold further includes a panel 80, a bottom plate 90 and two oppositely arranged fixed blocks 100. The panel 80 is located on the top side of the A plate and fixed to the A plate. The bottom plate 90 is located on the bottom side of the H plate and fixed to the D plate. The two fixed blocks 100 are fixed between the D plate and the bottom plate 90. The two fixed blocks 100, the D plate and the bottom plate 90 enclose a receiving groove 110, and the mold opening mechanism and the ejection mechanism 70 are located in the receiving groove 110.

[0063] In some embodiments, in combination Figure 2 , Figure 5 and Fig.13 As shown, the panel 80 is provided with a feed port 80a. A first bushing 80b is fixed at the feed port 80a of the panel 80, and a second bushing 150 is fixed to the A plate. A material channel groove 201c is provided on the mating surfaces of the two first outer mold modules 201, and a material channel is formed after mating, and the material channel is connected with the two cavities X, and the inner hole of the second bushing 150 connects the feed port 80a and the material channel.

[0064] The present application also provides a method for using the above-mentioned injection mold. When opening the mold, plate A first moves toward the top side to separate from plate B, then plate B and plate C move toward the top side together to separate plate C from plate D, and then plate B moves toward the top side to separate plate B from plate C. When closing the mold, plate B first moves toward the bottom side to align plate B with plate C, then plate B and plate C move toward the bottom side together to align plate C with plate D, and then plate A moves toward the bottom side to align plate B. Opening and closing the mold in this order avoids the problem of the bottom mold 40 and the outer mold 20 hitting the first inner mold module 301 when they are aligned, causing damage to the mold, and the problem of the bottom mold 40 and the outer mold 20 hitting the product when they are separated, causing damage to the product.

[0065] The above specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. An injection mold, characterized in that: The invention comprises a top mold (10), an outer mold (20), an inner mold (30), a bottom mold (40) and a driving wedge (50), wherein the outer mold (20) encloses a mold hole (M), the top end of the inner mold (30) passes through the bottom mold (40) and the bottom end opening of the mold hole (M) and extends into the mold hole (M), a cavity (X) is formed between the inner mold (30) and the mold hole (M), and between the top mold (10) and the bottom mold (40), the driving wedge (50) is provided with a first driving inclined surface (501), and the inner mold (30) comprises two first inner mold modules (301) arranged opposite to each other, and the first inner mold modules (301) are provided with a first matching inclined surface (301a); It also includes an A plate, a B plate, a C plate and a D plate arranged in sequence from top to bottom, the top mold (10) being fixed to the A plate, the outer mold (20) being connected to the B plate and being able to slide relative to the B plate along the radial direction of the mold hole (M), the bottom mold (40) being fixed to the B plate, the two first inner mold modules (301) being connected to the C plate and being able to slide relative to the C plate along the radial direction of the mold hole (M), the driving inclined wedge (50) being fixed to the D plate, and when the mold is closed, the first driving inclined surface (501) of the driving inclined wedge (50) is in contact with the first matching inclined surfaces (301a) of the two first inner mold modules (301) to drive the two first inner mold modules (301) to slide along the radial direction of the mold hole (M) in a direction away from the central axis of the mold hole (M); The invention also comprises a locking mechanism (60), wherein the locking mechanism (60) comprises a first locking rod (601), a second locking rod (602), and a sliding locking block (603), wherein the first locking rod (601) is fixed to the side surface of the B plate, the sliding locking block (603) is connected to the side surface of the C plate and can slide along the width direction of the C plate, the second locking rod (602) is fixed to the side surface of the D plate, the first locking rod (601) is provided with a second driving inclined surface (601a), and the sliding locking block (603) is provided with a The second mating bevel (603a), when the B plate and the C plate are in a separated state, the sliding lock block (603) is located at a first position, and the sliding lock block (603) resists one end of the second locking rod (602) close to the C plate. During the mating process of the B plate and the C plate, the second driving bevel (601a) is in contact with the second mating bevel (603a), driving the sliding lock block (603) to slide from the first position to a second position where it does not resist the second locking rod (602).

2. The injection mold according to claim 1, characterized in that: The locking mechanism (60) comprises an elastic member (604), and after the B plate, the C plate and the D plate are separated, the sliding locking block (603) slides from the second position to the first position under the elastic force of the elastic member (604).

3. The injection mold according to claim 1, characterized in that: The sliding lock block (603) is provided with a first socket (603b), a side wall of the first socket (603b) forms the second matching inclined surface (603a), and the first socket (603b) is used for plugging the first locking rod (601).

4. The injection mold according to claim 1, characterized in that: The sliding locking block (603) is provided with a second socket (603c), and the second socket (603c) is used to plug the second locking rod (602). When the sliding locking block (603) is located at the first position, the second socket (603c) and the second locking rod (602) are staggered, so that the second locking rod (602) cannot be inserted into the second socket (603c); when the sliding locking block (603) is located at the second position, the second socket (603c) and the second locking rod (602) are aligned, so that the second locking rod (602) can be inserted into the second socket (603c).

5. The injection mold according to claim 1, characterized in that: The locking mechanism (60) comprises a lock housing (605), the lock housing (605) being fixed to the side surface of the C plate, the sliding lock block (603) being located in the lock housing (605), and the lock housing (605) being provided with a first locking opening (605a) for plugging the first locking rod (601) and a second locking opening (605b) for plugging the second locking rod (602).

6. The injection mold according to claim 1, characterized in that: The outer mold (20) comprises two first outer mold modules (201) and two second outer mold modules (202) arranged opposite to each other. The two first outer mold modules (201) can slide relative to the B plate along a first direction to mate with or separate from each other. The two second outer mold modules (202) can slide along a second direction. The mating surfaces of the two first outer mold modules (201) are respectively provided with two grooves (201a) and two recesses (201b). In the mating state, the two second outer mold modules (202) are respectively inserted into a channel formed by the two recesses (201b) mating with each other. One side of one second outer mold module (202) and the two mating grooves (201a) are enclosed together to form a mold hole (M). Another second outer mold module (202) and the other two mating grooves (201a) are enclosed together to form another mold hole (M), wherein the first direction and the second direction are perpendicular to each other.

7. The injection mold according to any one of claims 1 to 6, characterized in that: The injection mold comprises an ejection mechanism (70), and the inner mold (30) comprises two second inner mold modules (302) arranged opposite to each other, and the bottom ends of the two second inner mold modules (302) are connected to the ejection mechanism (70) via a connecting rod (160).

8. The injection mold according to claim 7, characterized in that: The injection mold comprises a mold opening mechanism, which comprises an E plate, an F plate, a G plate and an H plate stacked in sequence from top to bottom, wherein the E plate is located at the bottom side of the D plate, and the G plate and the H plate are fixed together. The injection mold further comprises a first ejector rod (170) and a second ejector rod (180), wherein the bottom end of the first ejector rod (170) is fixed to the G plate, the top end of the first ejector rod (170) is fixed to the C plate, the bottom end of the second ejector rod (180) is fixed to the E plate, the top end of the second ejector rod (180) is fixed to the B plate, and the bottom end of the ejection mechanism (70) is fixed to the F plate.

9. The injection mold according to claim 8, characterized in that: The injection mold further comprises a panel (80), a bottom plate (90) and two fixed blocks (100) arranged opposite to each other, the panel (80) being located on the top side of the A plate and being fixed to the A plate, the panel (80) being provided with a feed port (80a), the bottom plate (90) being located on the bottom side of the H plate and being fixed to the D plate, the two fixed blocks (100) being fixed between the D plate and the bottom plate (90), and forming a receiving groove (110) together with the D plate and the bottom plate (90), and the mold opening mechanism and the ejection mechanism (70) being located in the receiving groove (110).

10. A method for using an injection mold, wherein the injection mold is the injection mold according to any one of claims 1 to 9, characterized in that: When the mold is opened, the A plate first moves toward the top side to separate from the B plate, and then the B plate and the C plate move toward the top side together to separate the C plate from the D plate, and then the B plate moves toward the top side to separate the B plate from the C plate; when the mold is closed, the B plate first moves toward the bottom side to align with the C plate, and then the B plate and the C plate move toward the bottom side together to align with the C plate, and then the A plate moves toward the bottom side to align with the B plate.

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