One-mold multi-cavity injection mold and method thereof

Abstract

The invention discloses a one-mold multi-cavity injection mold and a method thereof, and relates to the technical field of injection molds, the one-mold multi-cavity injection mold comprises a fixed mold, a movable mold, a fixed mold core, a movable mold core and at least four molding inserts fixedly arranged on the fixed mold core, at least one first sliding block group is arranged on the fixed mold in a sliding manner, and the first sliding block group comprises a first sliding block a and a first sliding block b; the movable mold is at least provided with an inclined guide column group which is matched with the first sliding block group in an inserting manner, and the inclined guide column group is used for driving the first sliding block a and the first sliding block b to move towards the direction close to each other or away from each other so as to realize mold closing and mold opening; the opposite sides of the first sliding block a and the first sliding block b are provided with at least two second sliding block sets, and the fixed mold core, the movable mold core, the first sliding block sets, the at least two second sliding block sets and the at least four forming inserts are matched to form at least four forming cavities. By the adoption of the technical scheme, a plurality of products can be formed through the mold with the small size, the size and production cost of the injection molding machine are reduced, and market popularization is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, in particular to a one-mold multi-cavity injection mold and a method thereof. Background Art

[0002] As the demand for plastic products continues to increase, improving the efficiency of injection molding has always attracted much attention. In the injection molding process, the application of multi-cavity injection molds containing multiple cavities is becoming increasingly widespread, which can realize the processing and molding of multiple products at the same time.

[0003] In traditional multi-cavity molds, a set of sliders typically only accommodates two molding cavities. This is primarily due to the need for ample sliding, forming, and guiding space when the sliders open and close the mold. If four or more molding cavities are required, the sliders must be significantly increased in size (e.g., by extending their length or increasing their thickness), resulting in an overall expansion of the mold. Furthermore, the increased slider size directly increases the mold's projected area and closing height, forcing the mold to adapt to injection molding machines with higher clamping forces and larger mold plates. This not only increases equipment procurement and energy consumption costs, but also places higher demands on factory space and power configuration, limiting the application of this technology by small and medium-sized enterprises. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-cavity injection mold and a method thereof, in response to the fact that the multi-cavity mold in the prior art needs to be provided with four or more molding cavities, which requires a significant increase in the volume of the slider, resulting in the expansion of the overall size of the mold. The increase in the volume of the slider requires a larger injection molding machine to cooperate with it, which increases the production cost.

[0005] A first aspect of the present invention provides a single-mold, multi-cavity injection mold, the technical solution adopted being: a single-mold, multi-cavity injection mold, comprising a fixed mold, a movable mold, a fixed mold core, a movable mold core, and at least four molding inserts fixedly mounted on the fixed mold core; at least one first slider group is slidably mounted on the fixed mold, the first slider group comprising a first slider a and a first slider b; the movable mold is provided with at least one inclined guide column group pluggable with the first slider group, the inclined guide column group being used to drive the first slider a and the first slider b to move toward or away from each other to achieve mold closing and mold opening; At least two groups of second slider groups are arranged between the first slider a and the first slider b, and the second slider groups include a second slider a and a second slider b fixed on the first slider a, and a second slider c fixed on the first slider b. The second slider c is located between the second slider a and the second slider b and can slide relative to the second slider a and the second slider b. Optionally, the second slider group includes a second slider a and a second slider b fixed on the first slider a, and a second slider c fixed on the first slider b. The second slider c is located between the second slider a and the second slider b and can slide relative to the second slider a and the second slider b. The second slider a and the second slider b cooperate with the fixed mold core, the movable mold core and the first slider group to form the two molding cavities.

[0006] Optionally, the inclined guide column group includes an inclined guide column a and an inclined guide column b, and the first slider a and the first slider b are respectively provided with an inclined guide groove a and an inclined guide groove b that cooperate with the inclined guide column a and the inclined guide column b.

[0007] Optionally, the length of the oblique guide column a is greater than the length of the oblique guide column b, and the opening of the oblique guide groove b that cooperates with the oblique guide column b is flared.

[0008] Optionally, the second slider a and the second slider b are symmetrically arranged, and the second slider a and the second slider b are respectively provided with a slide groove a and a slide groove b on opposite sides, and two protrusions are provided on both sides of the second slider c for slidingly cooperating with the slide groove a and the slide groove b respectively.

[0009] Optionally, guide bevels a and guide bevels b are respectively provided in the slide groove a and the slide groove b, and guide bevels c are respectively provided on the two protrusions for cooperating with the guide bevels a and the guide bevels b, and the guide bevels a, b and c cooperate to guide the second slider a and the second slider b to approach or move away from each other.

[0010] Optionally, the cross sections of the chute a and the chute b are both T-shaped, and the shapes of the two protrusions are respectively adapted to the chute a and the chute b.

[0011] Optionally, the number of inclined guide column groups and inclined guide grooves a and oblique guide grooves b corresponding to the first slider group is two, and the two groups of inclined guide column groups and the corresponding oblique guide grooves a and oblique guide grooves b cooperate to drive the first slider a and the first slider b towards or away from each other.

[0012] Optionally, there are two fixed mold cores and two movable mold cores, and each fixed mold core and movable mold core corresponds to a group of first slider groups.

[0013] Optionally, an ejection mechanism is further provided in the fixed mold, and the ejection mechanism is used to eject the molded product.

[0014] The present invention also provides a method for preparing an injection molded product, based on the above-mentioned single-mold multi-cavity injection mold, comprising the following steps: The movable mold and the fixed mold are closed, and the inclined guide pillar a cooperates with the inclined guide groove a, and the inclined guide pillar b cooperates with the inclined guide groove b to drive the first slider a and the first slider b to move toward each other, so that the movable mold core, the fixed mold core, the first slider group, the second slider group and the molding insert cooperate to form multiple molding cavities for injection molding products; Injection molding into the molding cavity to form the product; The movable mold and the fixed mold open, and the inclined guide pillar a and the inclined guide groove a cooperate to drive the first slider a to move away from the first slider b, driving the second slider a and the second slider b to move toward each other relative to the second slider c, so that the second slider a and the second slider b are separated from the product; The inclined guide pillar a and the inclined guide groove a, as well as the inclined guide pillar b and the inclined guide groove b, cooperate to drive the first slider a and the first slider b to move away from each other, thereby driving the second slider a, the second slider b and the second slider c to move, thereby realizing damage-free mold opening; The ejection mechanism ejects the product.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are: The present application arranges at least two groups of second slider groups on the first slider group, so that the first slider group, at least two groups of second slider groups, the fixed mold core, the movable mold core and at least four molding inserts can cooperate to form at least four molding cavities, thereby forming more than four molding cavities without increasing the size of the first slider group. Compared with the multi-cavity mold in the prior art, the present application can mold multiple products with a smaller mold size, thereby reducing the size of the injection molding machine, that is, multiple products can be molded at one time on a small injection molding machine, reducing equipment procurement costs and energy consumption costs. The structure is simple and compact, and the practicability is strong, which is conducive to market promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is an overall cross-sectional view of this embodiment; Figure 2 This is a partial view of the embodiment after removing the fixed mold and the movable mold; Figure 3 yes Figure 2 A partial cross-sectional view of Figure 4 yes Figure 2 A partial cross-sectional view from another perspective; Figure 5 yes Figure 4Enlarged view of part A; Figure 6 It is a schematic diagram for illustrating the coordination relationship among the second slider a, the second slider b and the second slider c; Figure 7 yes Figure 6 Another perspective of the display diagram; Figure 8 It is a flow chart of the method of use provided by the present invention.

[0018] Explanation of the accompanying reference numerals: 10, fixed mold; 11, fixed mold core; 12, molding insert; 20, movable mold; 21, movable mold core; 30, first slider group; 31, first slider a; 311, inclined guide groove a; 32, first slider b; 321, inclined guide groove b; 40, inclined guide column group; 41, inclined guide column a; 42, inclined guide column b; 50, second slider group; 51, second slider a; 511, slide groove a; 512, guide slope a; 52, second slider b; 521, slide groove b; 522, guide slope b; 53, second slider c; 531, bump; 532, guide slope c. DETAILED DESCRIPTION

[0019] The following is a combination of the embodiments of the present invention Figures 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] This embodiment relates to a multi-cavity injection mold. Figure 1-Figure 7 , including a fixed mold 10, a movable mold 20, a fixed mold core 11, a movable mold core 21 and at least four molding inserts 12 fixedly provided on the fixed mold core 11, at least one group of first slider groups 30 are slidably provided on the fixed mold 10, the first slider group 30 includes a first slider a31 and a first slider b32, and the movable mold 20 is provided with at least one group of inclined guide column groups 40 plugged into and matched with the first slider group 30, and the inclined guide column group 40 is used to drive the first slider a31 and the first slider b32 to move toward or away from each other to realize the closing and opening of the mold.

[0023] At least two second slider groups 50 and a fixed mold core 11 are disposed between the first slider a31 and the first slider b32. The movable mold core 21, the first slider group 30 (first slider a31 and first slider b32), the at least two second slider groups 50, and at least four molding inserts 12 cooperate to form at least four molding cavities.

[0024] Specifically, the second slider assembly 50 includes a second slider a51 and a second slider b52 fixed to the first slider a31, and a second slider c53 fixed to the first slider b32. The second slider b52 is located between the second slider a51 and the second slider c53 and can slide relative to the second slider a51 and the second slider b52. The second slider a51 and the second slider b52 are fixed to the first slider a31 so that the second slider a51 and the second slider b52 move with the movement of the first slider a31. The second slider c53 is fixed to the second slider b52 so that the second slider c53 moves with the movement of the second slider b52. As a result, when the inclined guide column assembly 40 drives the first slider a31 and the first slider b32 toward or away from each other, it simultaneously drives the second slider a51, the second slider b52, and the second slider c53 to move.

[0025] It can be understood that by arranging at least two groups of second slider groups 50 between the first slider a31 and the first slider b32, the fixed mold core 11, the movable mold core 21, the first slider a31, the first slider b32, the two groups of second slider groups 50 and at least four molding inserts 12 can cooperate to form at least four molding cavities, and "multi-cavity" can be achieved without increasing the size of the first slider a31 and the first slider b32, thereby reducing the size of the entire injection mold, and can be used on a small injection molding machine, reducing production costs, being highly practical, and having good market promotion prospects.

[0026] Furthermore, the oblique guide column group 40 includes an oblique guide column a41 and an oblique guide column b42. The first slider a31 and the first slider b32 are respectively provided with an oblique guide groove a311 and an oblique guide groove b321 that cooperate with the oblique guide column a41 and the oblique guide column b42.

[0027] During mold closing, the movable mold 20 is driven toward the fixed mold 10, driving the inclined guide pins a41 and b42 toward the inclined guide grooves a311 and b321 and inserting them into the inclined guide grooves a311 and b321, respectively. This in turn drives the first sliders a31 and b32 toward each other, achieving mold closing. During mold opening, the movable mold 20 is driven away from the fixed mold 10, thereby withdrawing the inclined guide pins a41 and b42 from the inclined guide grooves a311 and b321, thereby driving the first sliders a31 and b32 toward each other, achieving mold opening.

[0028] Furthermore, the length of the oblique guide column a41 is greater than the length of the oblique guide column b42, and the opening of the oblique guide groove b321 that cooperates with the oblique guide column b42 is flared.

[0029] The length of the inclined guide column a41 is set to be greater than the length of the inclined guide column b42, so that when the mold is opened, the inclined guide column a41 can be inserted into the inclined guide groove a311 before the inclined guide column b42 is inserted into the inclined guide groove b321. At the same time, the opening of the inclined guide groove b321 is set to be expanded, so that when the inclined guide column b42 is just inserted into the inclined guide groove b321, the inclined guide column b42 cannot abut against the groove wall of the inclined guide groove b321, that is, the inclined guide column b42 and the inclined guide groove b321 cannot drive the first slider b32 to move. However, since the length of the inclined guide column a41 is greater than the length of the inclined guide column b42 and is not set to be expanded, the inclined guide column a41 and the inclined guide groove a311 cooperate to drive the first slider a31 to move in the direction away from the first slider b32. Generally speaking, with the above arrangement, when the mold is opened, the first slider a31 moves before the first slider b32, thereby driving the second sliders a51 and b52 to move. After the second sliders a51 and b52 move to the set position, the inclined guide pillar b42 abuts the inner wall of the inclined guide groove b321 and drives the first slider b32 to move, thus completing the mold opening. The mold closing process is the opposite of the mold opening process and will not be described in detail here.

[0030] Furthermore, the second slider a51 and the second slider b52 are symmetrically arranged, and the second slider a51 and the second slider b52 are respectively provided with a sliding groove a511 and a sliding groove b521 on the opposite sides, and two protrusions 531 are respectively provided on both sides of the second slider c53, which slide and cooperate with the sliding groove a511 and the sliding groove b521.

[0031] It can be understood that by providing the sliding groove a511 and the sliding groove b521 on the second slider a51 and the second slider b52, and providing two protrusions 531 on the second slider c53 for cooperating with the sliding groove a511 and the sliding groove b521 respectively, the second slider a51 and the second slider b52 can move stably relative to the second slider c53 and are not prone to displacement.

[0032] Furthermore, guide slopes a512 and b522 are respectively provided in the slide groove a511 and the slide groove b521, and guide slopes c532 are respectively provided on the two protrusions 531 for cooperating with the guide slopes a512 and b522. The guide slopes a512, b522 and c532 cooperate to guide the second slider a51 and the second slider b52 to approach or move away from each other.

[0033] Specifically, refer to Figure 6 The guide slope a512 and the guide slope b522 cooperate to form an "outward eight" shape, and the two guide slopes c532 also cooperate to form an "outward eight" shape, so that when the first slider a31 drives the second slider a51 and the second slider b52 to move, it drives the second slider a51 and the second slider b52 to move toward or away from each other.

[0034] It should be noted that, since the second slider a51 and the second slider b52 cooperate with the first slider group 30, the fixed mold core 11, the movable mold core 21 and the molding insert to form a molding cavity, after the product is injection molded, the second slider a51 and the second slider b52 are in close contact with the outer wall of the product. If the second slider a51 and the second slider b52 slide along the moving direction of the first slider a31 and the first slider b32, the product will be damaged. Therefore, the present application provides a guide slope a512 and a guide slope b522 in the chute a511 and the chute b521 respectively, and provides a useful guide on the two protrusions 531. Due to the guide bevel c532 that cooperates with the guide bevel a512 and the guide bevel b522 respectively, when the first slider a31 drives the second slider a51 and the second slider b52 to move, the second slider a51 and the second slider b52 will first move in a direction approaching each other. At this time, the second slider a51 and the second slider b52 will first separate from the product. After the second slider a51 and the second slider b52 are separated from the second slider c53, they will move along the moving direction of the first slider a31, thereby avoiding the situation where the second slider a51 and the second slider b52 damage the product during movement, and realizing "damage-free" mold opening.

[0035] Furthermore, the cross sections of the slide groove a511 and the slide groove b521 are both T-shaped, and the shapes of the two protrusions 531 are respectively adapted to the slide groove a511 and the slide groove b521.

[0036] It can be understood that the cross-sections of the slide groove a511 and the slide groove b521 are set to T-shaped, and the two protrusions 531 are set to a shape that matches the slide groove a511 and the slide groove b521, so that the second slider a51, the second slider b52 and the second slider c53 fit more closely and are less likely to shift in position during movement.

[0037] Furthermore, the number of inclined guide column groups 40, inclined guide grooves a311 and inclined guide grooves b321 corresponding to the first slider group 30 are both two groups. The two groups of inclined guide column groups 40 and the corresponding inclined guide grooves a311 and b321 cooperate to drive the first slider a31 and the first slider b32 to move closer to or away from each other.

[0038] It can be understood that the inclined guide column group 40, inclined guide groove a311 and inclined guide groove b321 on the first slider group 30 are set as two groups, so that during the mold opening and closing process, the first slider a31 and the first slider b32 can stably move toward or away from each other, thereby improving the accuracy of mold opening and closing.

[0039] In other embodiments, the inclined guide column group 40, the inclined guide groove a311 and the inclined guide groove b321 can also be set to one group, three groups or other numbers, which are not limited here.

[0040] Furthermore, the number of the fixed mold cores 11 and the movable mold cores 21 are both two, and each fixed mold core 11 and movable mold core 21 corresponds to a group of first slider groups 30 .

[0041] It can be understood that by setting the number of the fixed mold core 11 and the movable mold core 21 to two groups, more than eight products can be molded at one time in one set of molds, further improving production efficiency.

[0042] In other embodiments, the number of the fixed mold cores 11 and the movable mold cores 21 can also be one group, three groups, or other numbers, which can be adjusted according to actual conditions and are not limited here.

[0043] Furthermore, an ejection mechanism (not shown) is provided within the fixed mold 10. This ejection mechanism is used to eject the product after the fixed mold 10 and the movable mold 20 are opened. Since this ejection mechanism is a conventional technical means in the art and is not an improvement of the present invention, it will not be described in detail.

[0044] In addition, refer to Figure 8 This embodiment further provides a method for preparing an injection molded product, based on the above-mentioned single-mold multi-cavity injection mold, comprising the following steps: 101. Clamp the movable mold 20 and the fixed mold 10. The inclined guide pillars a41 and the inclined guide grooves a311, and the inclined guide pillars b42 and the inclined guide grooves b321 cooperate to drive the first sliders a31 and b32 toward each other, so that the movable mold core 21, the fixed mold core 11, the first slider group 30, the second slider group 50, and the molding inserts 12 cooperate to form a plurality of molding cavities for the injection molded product. 102. The injection molding melt is injected into the molding cavity through the pouring system of the injection molding machine to form a product; 103. The movable mold 20 and the fixed mold 10 are opened. The inclined guide pillar a41 and the inclined guide groove a311 cooperate to drive the first slider a31 to move away from the first slider b32, thereby driving the second slider a51 and the second slider b52 to move toward each other relative to the second slider c53, thereby separating the second slider a51 and the second slider b52 from the product. 104. The inclined guide pillar a41 cooperates with the inclined guide groove a311, and the inclined guide pillar b42 cooperates with the inclined guide groove b321 to drive the first slider a31 and the first slider b32 to move away from each other, thereby driving the second slider a51, the second slider b52, and the second slider c53 to move, thereby achieving damage-free mold opening. 105. The ejection mechanism ejects the product. After the product is ejected from the mold, it can be collected and stored, or enter the next process.

[0045] In some preferred embodiments, the present application further provides a method for using a single-mold multi-cavity injection mold, which is applicable to the single-mold multi-cavity injection mold as described above, comprising the following steps: 101. Clamp the movable mold 20 and the fixed mold 10. The inclined guide pillars a41 and the inclined guide grooves a311, and the inclined guide pillars b42 and the inclined guide grooves b321 cooperate to drive the first sliders a31 and b32 toward each other, so that the movable mold core 21, the fixed mold core 11, the first slider group 30, the second slider group 50, and the molding inserts 12 cooperate to form a plurality of molding cavities for the injection molded product. 102. The injection molding melt is injected into the molding cavity through the pouring system of the injection molding machine to form a product; 103. The movable mold 20 and the fixed mold 10 are opened. The inclined guide pillars a41 and the inclined guide grooves a311 cooperate to drive the first slider a31 to move away from the first slider b32, thereby driving the second slider a51 and the second slider b52 to move toward each other relative to the second slider c53, thereby separating the second slider a51 and the second slider b52 from the product. 104. The inclined guide pillar a41 cooperates with the inclined guide groove a311, and the inclined guide pillar b42 cooperates with the inclined guide groove b321 to drive the first slider a31 and the first slider b32 to move away from each other, thereby driving the second slider a51, the second slider b52, and the second slider c53 to move, thereby achieving damage-free mold opening. 105. The ejection mechanism ejects the product, and the product can be collected and stored after being ejected from the mold, or enter the next process.

[0046] The working principle of the present invention is roughly as follows: when the mold is opened, the movable mold 20 is driven to separate from the fixed mold 10, and the inclined guide pillars a41 and b42 on the movable mold 20 cooperate with the inclined guide grooves a311 and b321 on the first slider group 30 to drive the first slider a31 and the first slider b32 to separate. Since the length of the inclined guide pillar a41 is greater than that of the inclined guide pillar b42, the inclined guide pillar a41 first cooperates with the inclined guide groove a311 and drives the first slider a31 to move. At this time, the first slider b32 remains stationary, and the first slider a31 drives the second slider a51 and the second slider b52 to move. Under the action of the guide inclined surface a512, the guide inclined surface b522 and the guide inclined surface c532, the second slider a51 and the second slider b52 move toward each other relative to the second slider c53 and separate from the product; when the second slider a51 and the second slider b52 move to the set position, the inclined guide pillar b42 cooperates closely with the inclined guide groove b321 and drives the first slider b32 to slide, driving the second slider c53 to slide, thereby realizing mold opening. That is, when the mold is opened, the first slider a31 drives the second slider a51 and the second slider b52 to slide until they are separated from the product, and then the first slider a31 drives the second slider a51 and the second slider b52 to move, and the first slider b32 drives the second slider c53 to move, thereby realizing "damage-free" mold opening of the product.

[0047] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A multi-cavity injection mold, characterized in that: The invention comprises a fixed mold (10), a movable mold (20), a fixed mold core (11), a movable mold core (21) and at least four molding inserts (12) fixedly arranged on the fixed mold core (11); at least one first slider group (30) is slidably arranged on the fixed mold (10); the first slider group (30) includes a first slider a (31) and a first slider b (32); the movable mold (20) is provided with at least one inclined guide column group (40) plug-fitted with the first slider group (30); the inclined guide column group (40) is used to drive the first slider a (31) and the first slider b (32) to move in a direction of approaching or moving away from each other, so as to realize mold closing and mold opening; At least two second slider groups (50) are provided on one side opposite to the first slider a (31) and the first slider b (32), the second slider group (50) comprising a second slider a (51) and a second slider b (52) fixed on the first slider a (31), and a second slider c (53) fixed on the first slider b (32), the second slider c (53) being located between the second slider a (51) and the second slider b (52) and being capable of sliding relative to the second slider a (51) and the second slider b (52); The fixed mold core (11), the movable mold core (21), the first slider group (30), at least two second slider groups (50) and at least four molding inserts (12) cooperate to form at least four molding cavities.

2. The multi-cavity injection mold according to claim 1, characterized in that: The inclined guide column group (40) includes an inclined guide column a (41) and an inclined guide column b (42), and the first slider a (31) and the first slider b (32) are respectively provided with an inclined guide groove a (311) and an inclined guide groove b (321) that cooperate with the inclined guide column a (41) and the inclined guide column b (42).

3. The multi-cavity injection mold according to claim 2, characterized in that: The length of the inclined guide column a (41) is greater than the length of the inclined guide column b (42), and the opening of the inclined guide groove b (321) matched with the inclined guide column b (42) is expanded.

4. The multi-cavity injection mold according to claim 3, characterized in that: The second slider a (51) and the second slider b (52) are symmetrically arranged. A slide groove a (511) and a slide groove b (521) are respectively provided on opposite sides of the second slider a (51) and the second slider b (52). Two protrusions (531) are respectively provided on both sides of the second slider c (53) for slidingly cooperating with the slide groove a (511) and the slide groove b (521).

5. The multi-cavity injection mold according to claim 4, characterized in that: The guide bevel a (512) and the guide bevel b (522) are respectively provided in the slide groove a (511) and the slide groove b (521), and the two protrusions (531) are provided with a guide bevel c (532) for respectively cooperating with the guide bevel a (512) and the guide bevel b (522), and the guide bevel a (512), the guide bevel b (522) and the guide bevel c (532) cooperate to guide the second slider a (51) and the second slider b (52) to approach or move away from each other.

6. The multi-cavity injection mold according to claim 5, characterized in that: The cross sections of the slide groove a (511) and the slide groove b (521) are both T-shaped, and the shapes of the two protrusions (531) are respectively adapted to the slide groove a (511) and the slide groove b (521).

7. The multi-cavity injection mold according to claim 1, characterized in that: The number of the inclined guide column group (40), the inclined guide groove a (311) and the inclined guide groove b (321) corresponding to the first slider group (30) is two, and the corresponding inclined guide groove a (311) and the inclined guide groove b (321) cooperate to drive the first slider a (31) and the first slider b (32) to move closer to or away from each other.

8. The multi-cavity injection mold according to claim 7, characterized in that: The number of the fixed mold core (11) and the movable mold core (21) is two, and each fixed mold core and movable mold core corresponds to a group of first slider groups (30).

9. The multi-cavity injection mold according to claim 1, characterized in that: An ejection mechanism is also provided in the fixed mold (10), and the ejection mechanism is used to eject the formed product.

10. A method for preparing an injection molded product, based on the multi-cavity injection mold according to any one of claims 1 to 9, characterized in that: The steps include: The movable mold (20) and the fixed mold (10) are closed together, and the inclined guide pillar a (41) and the inclined guide groove a (311), and the inclined guide pillar b (42) and the inclined guide groove b (321) cooperate to drive the first slider a (31) and the first slider b (32) to move toward each other, so that the movable mold core (21), the fixed mold core (11), the first slider group (30), the second slider group (50) and the molding insert (12) cooperate to form a plurality of molding cavities for injection molding products; The injection molding melt is injected into the molding cavity through the pouring system of the injection molding machine to form the product; The movable mold (20) and the fixed mold (10) are opened, and the inclined guide column a (41) and the inclined guide groove a (311) cooperate to drive the first slider a (31) to move in a direction away from the first slider b (32), thereby driving the second slider a (51) and the second slider b (52) to move in a direction toward each other relative to the second slider c (53), so that the second slider a (51) and the second slider b (52) are separated from the product; The inclined guide column a (41) and the inclined guide groove a (311), and the inclined guide column b (42) and the inclined guide groove b (321) cooperate to drive the first slider a (31) and the first slider b (32) to move in a direction away from each other, thereby driving the second slider a (51), the second slider b (52) and the second slider c (53) to move, thereby realizing damage-free mold opening; The ejection mechanism ejects the product.

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