Injection mold for double-color top cover piece on automobile steering wheel

Abstract

The utility model relates to a bi-color top cover piece injection mold on an automobile steering wheel, which comprises a first color mold and a second color mold, the first color mold comprises a first upper mold and a first lower mold, and the first upper mold and the first lower mold are matched to form a U-shaped frame forming cavity. A first-color glue injection opening is formed in the first-color mold and is communicated with the U-shaped frame forming cavity; the second-color mold comprises a second upper mold and a second lower mold, the second lower mold provided with the U-shaped frame is matched with the second upper mold to form a side cover forming cavity, a second-color glue injection opening is formed in the second-color mold and is communicated with the side cover forming cavity, and product ejection assemblies are arranged on the first lower mold and the second lower mold. And the double-color top cover piece can be automatically injected.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, especially point to a kind of double-color top cover piece injection mold on automobile steering wheel. BACKGROUND

[0002] Automobile steering wheel is equipped with left and right button group, button group can have light button, talk button, volume button, windscreen wiper button etc.. Button group outside can be provided with outer surrounding frame, and button is surrounded inside. As in CN217198321U proposed a top cover (6), top cover (6) is buckled on button seat (4), the top cover (6) is provided with an operating hole (8), and the top plate (502) of each button (5) is embedded in operating hole (8), and the bottom surface of top cover (6) is connected with a tubular shell (9), shell (9) is tightly buckled on the outer periphery of cover body (401), and the inner wall of shell (9) is attached to the outer side wall of cover body (401);Second clamping hole (15) corresponding to second clamping hook (13) is formed in the side wall of shell (9), and when shell (9) is buckled on the outer periphery of cover body (401), second clamping hole (15) is tightly buckled on second clamping hook (13). While traditional mold injection process is generally single-color top cover injection, and cannot meet the needs of double-color top cover integrated molding.

[0003] The finished product of the technical solution is a top cover piece, as shown in the figure, the top cover piece is connected by different color U-shaped frame 1' and side cover 2', the two ends of U-shaped frame 1' are integrally injection molded with side cover 2', a plurality of first clamping holes 11' and second clamping holes 12' are respectively arranged on the opposite sides of U-shaped frame 1', and U-shaped frame 1' further has a third opening 13' on the opposite side of side cover 2', the two ends of U-shaped frame 1' have plug blocks 14', side cover 2' has fourth clamping hole 21' and plug hole 22', plug block 14' is inserted into plug hole 22'. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of double-color top cover piece injection molds on automobile steering wheel, and automatically injection molded double-color top cover piece to overcome the defects of prior art.

[0005] The utility model discloses a technical scheme: a double -colored top cover spare injection mold on car steering wheel, including first color mold and second color mold, first color mold includes first upper die and first lower die, first upper die and first lower die cooperation constitute U -shaped frame forming cavity, be equipped with first modeling rod, second modeling rod, third modeling rod and first modeling block that distribute around on first lower die, have first socket forming block for forming the first socket on U -shaped frame on first modeling rod tip, have second socket forming block for forming the second socket on U -shaped frame on second modeling rod tip, have third socket forming block for forming the third socket on U -shaped frame on third modeling rod tip, have insert block modeling hole for forming the insert block on both ends of U -shaped frame on first modeling block tip, when first color mold closes, the tip of each modeling rod inserts into U -shaped frame forming cavity, first modeling block is located U -shaped frame forming cavity edge, when opening, the tip of each modeling rod slides out of U -shaped frame forming cavity, first modeling block is away from U -shaped frame forming cavity, be equipped with first color injection port on first color mold, and it is communicated with U -shaped frame forming cavity, second color mold includes second upper die and second lower die, and the second lower die of placing U -shaped frame is with second upper die cooperation and constitutes side cover forming cavity, be equipped with second modeling block on second lower die, have fourth socket forming block for forming the socket on side cover on second modeling block, when second color mold closes, the tip of second modeling block inserts into side cover forming cavity, and the insert block on both ends of U -shaped frame also inserts into side cover forming cavity, when opening, the tip of second modeling block slides out of side cover forming cavity, be equipped with second color injection port on second color mold, and it is communicated with side cover forming cavity, be equipped with product ejection assembly on first and second lower die.

[0006] By adopting the above technical scheme, ① the first step: forming U-shaped frame, after the first color mold closes, the U-shaped frame forming cavity is formed, the tip of each modeling rod inserts into the U-shaped frame forming cavity, the first modeling block is located at the edge of the U-shaped frame forming cavity, the first color material is poured into the U-shaped frame forming cavity from the first color injection port, thereby forming the U-shaped frame, and the first socket, the second socket and the third socket on the U-shaped frame are formed by the socket forming blocks on the tips of the modeling rods respectively, and the insert block on both ends of the U-shaped frame is formed by pouring the first color material into the insert block modeling hole on the tip of the first modeling block; then the first color mold is opened, the first upper die moves away from the first lower die, the formed U-shaped frame is left on the first lower die, at this time, the tip of each modeling rod slides out of the U-shaped frame forming cavity, the first modeling block is away from the U-shaped frame forming cavity, and the U-shaped frame is ejected by the product ejection assembly; ② the second step: forming side cover, the U-shaped frame formed by the first color mold is placed on the lower die of the second color mold, after the second color mold is closed, the side cover forming cavity is formed, the second color material is poured into the side cover forming cavity from the second color injection port, thereby forming the side cover injection molded on both ends of the U-shaped frame, and the first socket on the side cover is formed by the first socket forming block on the tip of the second modeling block, and the insert block on both ends of the U-shaped frame can form the socket by being surrounded by the second color material.

[0007] The further setting of the utility model is: the first lower mould is equipped with a molding die and a center block, the molding die has a center hole, the center block is arranged in the center hole, the inner periphery of the molding die and the outer periphery of the center block form a lower mould cavity of a U-shaped frame forming cavity, the molding die is equipped with a first sliding groove, a second sliding groove, a third sliding groove and a fourth sliding groove which are distributed along the outer periphery of the center hole, the first molding rod, the second molding rod, the third molding rod and the first molding block are slidingly arranged in the respective sliding grooves, the center block has a movable slot for the end of the second molding rod to slide in and out, when the first color mold is closed, the ends of the first molding rod, the third molding rod and the first molding block slide inwards and abut on the outer periphery of the center block, the end of the second molding rod slides out of the movable slot and abuts on the inner periphery of the molding die; when the mold is opened, the ends of the first molding rod, the third molding rod and the first molding block slide outwards away from the center block and are separated from the lower mould cavity, the end of the second molding rod slides inwards away from the molding die and enters the movable slot;

[0008] The second lower mould is equipped with a molding die, a center block, a first molding rod, a second molding rod and a third molding rod which have the same structure as those of the first lower mould, and the first molding rod, the second molding rod, the third molding rod and the second molding block on the second lower mould are slidingly arranged in the respective sliding grooves on the molding die.

[0009] The further setting is adopted, when the mold is opened, the molding rod and the molding block slide and separate from the clamping hole on the U-shaped frame and the side cover, which facilitates the subsequent ejection of the product.

[0010] The further setting of the utility model is: the first color mold is equipped with a first row position mechanism for sliding the first molding rod when the mold is opened and closed, a second row position mechanism for sliding the second molding rod, a third row position mechanism for sliding the third molding rod and a fourth row position mechanism for sliding the first molding block, each row position mechanism comprises a row position block slidingly arranged on the first lower mould and an inclined guide block connected to the first upper mould, the row position block is equipped with an inclined guide cavity for inserting the inclined guide block, the inclined guide cavities of the first row position mechanism, the third row position mechanism and the fourth row position mechanism are inclined away from the center block side from top to bottom, and the inclined guide cavity of the second row position mechanism is inclined towards the center block side from top to bottom, when the mold is closed, each inclined guide block and the respective inclined guide cavity slide downwards, which can drive the corresponding end of the first molding rod, the third molding rod and the first molding block to slide inwards and close to the center block, and drive the end of the second molding rod to slide outwards and close to the molding die, when the mold is opened, each inclined guide block and the respective inclined guide cavity slide upwards, which can drive the corresponding end of the first molding rod, the third molding rod and the first molding block to slide outwards away from the center block, and drive the end of the second molding rod to slide inwards away from the molding die;

[0011] The first color mold is provided with a first row position mechanism, a second row position mechanism, a third row position mechanism and a fourth row position mechanism which have the same structure as those of the first color mold, and each row position mechanism on the second color mold is used to drive the corresponding first modeling rod, second modeling rod, third modeling rod and second modeling block to slide.

[0012] With the further setting, when the mold is opened and closed, each inclined guide block is matched with the corresponding inclined guide cavity to drive the corresponding modeling rod and modeling block to slide in and out of the cavity. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0014] Figure 2 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0015] Figure 3 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0016] Figure 4 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0017] Figure 5 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0018] Figure 6 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0019] Figure 7 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0020] Figure 8 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0021] Figure 9 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0022] Figure 10 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0023] Figure 11 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0024] Figure 12 The figure is a structure diagram of the first color mold and the second color mold of the embodiment of the utility model;

[0025] Figure 13 is a structure diagram of the first molding block in the embodiment of the utility model;

[0026] Figure 14 is a structure diagram of the insert block molding hole on the first molding block in the embodiment of the utility model;

[0027] Figure 15 is a cooperation diagram of the center block and the molding rod on the second lower mold in the embodiment of the utility model;

[0028] Figure 16 is a structure diagram of the second molding block in the embodiment of the utility model;

[0029] Figure 17 is a structure diagram of the two upper molds in the embodiment of the utility model;

[0030] Figure 18 is a structure diagram of the four inclined guide blocks on the first upper mold in the embodiment of the utility model;

[0031] Figure 19 is a structure diagram of the four row position mechanisms of the first mold in the embodiment of the utility model;

[0032] Figure 20 is a structure diagram of the top cover in the background technology of the utility model;

[0033] Figure 21 is a structure diagram of the U-shaped frame in the background technology of the utility model;

[0034] Figure 22 is a structure diagram of the side cover in the background technology of the utility model.

[0035] In the drawing: U-shaped frame 1', first clamping opening 11', second clamping opening 12', third opening 13', insert block 14', side cover 2', fourth clamping opening 21', insert opening 22';

[0036] First color mold 1, first upper mold 11, first lower mold 12, first color glue injection opening 13, first molding rod 121, second molding rod 122, third molding rod 123, first molding block 124, first clamping opening forming block 1211, second clamping opening forming block 1221, third clamping opening forming block 1231, insert block molding hole 1241, second color mold 2, second upper mold 21, second lower mold 22, second color glue injection opening 23, second molding block 221, fourth clamping opening forming block 2211, molding core 14, center hole 14a, first sliding groove 141, second sliding groove 142, third sliding groove 143, fourth sliding groove 144, center block 15, movable groove 151, lower mold cavity 16, first row position mechanism 1a, second row position mechanism 1b, third row position mechanism 1c, fourth row position mechanism 1d, row position block 1a1, inclined guide cavity 1a11, inclined guide block 1a2. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments will be described clearly and completely in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0038] As Figures 1-22The utility model discloses a double -colored top cover piece injection mold on car steering wheel, including first color mold 1 and second color mold 2, first color mold 1 includes first upper die 11 and first lower die 12, first upper die 11 and first lower die 12 cooperation constitute U -shaped frame forming cavity, be equipped with first color injection port 13 on first color mold 1, it with U -shaped frame forming cavity lead, be equipped with first modeling rod 121, second modeling rod 122, third modeling rod 123 and first modeling block 124 of distribution around on first lower die 12, have first clamping port forming block 1211 for forming the first clamping port on U -shaped frame on first modeling rod 121 tip, have second clamping port forming block 1221 for forming the second clamping port on U -shaped frame on second modeling rod 122 tip, have third clamping port forming block 1231 for forming the third clamping port on U -shaped frame on third modeling rod 123 tip, have insert block modeling hole 1241 for forming the insert block on both ends of U -shaped frame on first modeling block 124 tip, be equipped with modeling die 14 and center block 15 on first lower die 12, modeling die 14 has center hole 14a, and center block 15 sets up in center hole 14a, and the lower die cavity 16 of U -shaped frame forming cavity is formed with center block 15 outer periphery to the inner periphery of modeling die 14, be equipped with first sliding groove 141, second sliding groove 142, third sliding groove 143 and fourth sliding groove 144 of distribution along center hole outer periphery on modeling die 14, first modeling rod 121, second modeling rod 122, third modeling rod 123 and first modeling block 124 are slidably arranged in respective sliding groove, center block 15 has the movable slot 151 of accommodating the sliding in and out of second modeling rod 122 tip, be equipped with the first row position mechanism 1a of the first modeling rod 121 sliding when opening and closing mold is driven in first color mold 1, the second row position mechanism 1b of the second modeling rod 122 sliding is driven, the third row position mechanism 1c of the third modeling rod 123 sliding is driven and the fourth row position mechanism 1d of the first modeling block 124 sliding is driven, each row position mechanism includes the row position block 1a1 slidably arranged on first lower die 12 and the inclined guide block 1a2 connected on first upper die 11, the inclined guide cavity 1a11 for the inclined guide block 1a2 is inserted and is equipped with on row position block 1a1, the inclined guide cavity 1a11 of first row position mechanism 1a, third row position mechanism 1c and fourth row position mechanism 1d is inclined from top to bottom to the side away from center block 15, the inclined guide cavity 1a11 of second row position mechanism 1b is inclined from top to bottom to the side close to center block 15, when first color mold closes, first upper die drives multiple inclined guide blocks synchronous descent, each inclined guide block 1a2 and respective inclined guide cavity 1a11 slide down cooperation, can drive corresponding first modeling rod 121, third modeling rod 123 and first modeling block 124 tip to slide inwards and rest on the outer periphery of center block 15, and drive second modeling rod 122 tip to slide out movable slot 151 and rest on the inner periphery of modeling die 14, so that the tip of each modeling rod is inserted into U -shaped frame forming cavity, and first modeling block is located at the edge of U -shaped frame forming cavity,At this time, the first color material is poured into the U-shaped frame forming cavity from the first color injection port 13, thereby forming the U-shaped frame, and the first, second and third clamping holes on the U-shaped frame are formed by the clamping blocks 1211 on the ends of the shaping rods, and the insert blocks on both ends of the U-shaped frame are formed by pouring the first color material into the insert block forming holes 1241 on the ends of the first shaping blocks 124; then the first color mold 1 is opened, the first upper mold moves away from the first lower mold, and the formed U-shaped frame remains on the first lower mold. When the mold is opened, the first upper mold drives the plurality of inclined guide blocks to rise synchronously, and by the sliding cooperation of each inclined guide block 1a2 and the respective inclined guide cavity 1a11, the corresponding first shaping rod 121 and third shaping rod 123 can be driven to slide outward to exit the first and third clamping holes on the U-shaped frame, the end of the second shaping rod 122 can be driven to slide inward into the movable slot 151 and exit the second clamping hole on the U-shaped frame, and the end of the first shaping block 124 can be driven to slide outward to disengage the insert block on the U-shaped frame. At this time, the U-shaped frame is ejected by the product ejection assembly; the above-mentioned row block and inclined guide block cooperation structure is disclosed in detail in CN212528536U and CN220280368U. A plurality of first shaping rods 121 can be arranged side by side on the row block 1a1 of the first row mechanism 1a, and a plurality of second shaping rods 122 can be arranged side by side on the row block 1a1 of the second row mechanism 1b.

[0039] The second color mold 2 comprises a second upper mold 21 and a second lower mold 22, the second lower mold 22 with the U-shaped frame is matched with the second upper mold 21 to form a side cover forming cavity, the second color mold 2 is provided with a second color glue injection port 23 which is communicated with the side cover forming cavity, the second lower mold 22 is provided with a second modeling block 221 and a modeling core 14, a center block 15, a first modeling rod 121, a second modeling rod 122 and a third modeling rod 123 which have the same structure as the first lower mold 12, the first modeling rod 121, the second modeling rod 122, the third modeling rod 123 and the second modeling block 221 on the second lower mold 22 are slidingly arranged in the respective sliding grooves on the modeling core 14. The second color mold 2 is also provided with the first row mechanism 1a, the second row mechanism 1b, the third row mechanism 1c and the fourth row mechanism 1d which have the same structure as the first color mold 1, and the respective row mechanisms on the second color mold 2 are used to drive the corresponding first modeling rod 121, the second modeling rod 122, the third modeling rod 123 and the second modeling block 221 to slide. The second modeling block 221 is provided with a fourth pinhole forming block 2211 for forming a pinhole on the side cover, when the second color mold is closed, the second upper mold drives a plurality of inclined guide blocks to synchronously descend, each inclined guide block 1a2 is slidingly matched with the respective inclined guide cavity 1a11, can drive the end of the corresponding first modeling rod 121 and third modeling rod 123 to slide inward and abut on the outer periphery of the center block 15 to block the pinhole on the U-shaped frame, and at the same time, the end of the second modeling block 221 is inserted into the side cover forming cavity, and the insertion blocks on the two ends of the U-shaped frame 1' are also inserted into the side cover forming cavity, the second color material is poured into the side cover forming cavity from the second color glue injection port 13, so as to form the side cover which is injection molded on the two ends of the U-shaped frame, at the same time, the first pinhole forming block on the end of the second modeling block 221 forms the first pinhole on the side cover, and the second color material surrounding the insertion blocks on the two ends of the U-shaped frame can form the pinhole; when the mold is opened, the second upper mold drives a plurality of inclined guide blocks to synchronously ascend, through the sliding matching of each inclined guide block 1a2 and the respective inclined guide cavity 1a11, the end of the second modeling block 221 slides outward out of the side cover forming cavity and separates from the fourth pinhole on the side cover, and the first modeling rod 121 and the third modeling rod 123 slide outward to separate from the first and third pinholes on the U-shaped frame, the end of the second modeling rod 122 slides inward into the movable groove 151 and separates from the second pinhole on the U-shaped frame, at this time, the double-color top cover piece is upwardly ejected through the product ejection assembly.

[0040] The product ejection assembly is arranged on the first lower mold and the second lower mold.

[0041] The upper mold is a movable mold and the lower mold is a fixed mold.

[0042] In use, the first color mold and the second color mold can be simultaneously opened and closed for operation, or staggered.

[0043] The first step: forming the U-shaped frame, forming the U-shaped frame forming cavity through the first color mold clamping, injection molding the U-shaped frame, and ejecting the U-shaped frame after the mold is opened;

[0044] The second step: forming the side cover, placing the U-shaped frame formed by the first color mold on the lower mold of the second color mold, forming the side cover forming cavity through the second color mold clamping, and ejecting the final product after the mold is opened.

[0045] It should be noted that all directional indications (such as up, down, front, back, etc.) in the description of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.

[0047] In the description of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "coupling", "connecting", "fixing" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A two-color top cover part injection mold on an automobile steering wheel, characterized by: The application relates to a first-color mold (1) and a second-color mold (2), the first-color mold (1) comprising a first upper mold (11) and a first lower mold (12), the first upper mold (11) and the first lower mold (12) being matched to form a U-shaped frame forming cavity, the first lower mold (12) being provided with a first shaping rod (121), a second shaping rod (122), a third shaping rod (123) and a first shaping block (124) which are distributed around the periphery, the first shaping rod (121) being provided with a first clamping hole forming block (1211) for forming a first clamping hole on the U-shaped frame, the second shaping rod (122) being provided with a second clamping hole forming block (1221) for forming a second clamping hole on the U-shaped frame, the third shaping rod (123) being provided with a third clamping hole forming block (1231) for forming a third clamping hole on the U-shaped frame, and the first shaping block (124) being provided with an inserting block shaping hole (1241) for forming an inserting block on the two ends of the U-shaped frame, when the first-color mold is closed, the ends of the shaping rods are inserted into the U-shaped frame forming cavity, and the first shaping block is located at the edge of the U-shaped frame forming cavity, when the mold is opened, the ends of the shaping rods slide out of the U-shaped frame forming cavity, and the first shaping block is away from the U-shaped frame forming cavity, the first-color mold (1) is provided with a first-color glue injection port (13) which is communicated with the U-shaped frame forming cavity, the second-color mold (2) comprises a second upper mold (21) and a second lower mold (22), the second lower mold (22) which is provided with the U-shaped frame is matched with the second upper mold (21) to form a side cover forming cavity, the second lower mold (22) is provided with a second shaping block (221), the second shaping block (221) is provided with a fourth clamping hole forming block (2211) for forming a clamping hole on the side cover, when the second-color mold is closed, the end of the second shaping block (221) is inserted into the side cover forming cavity, and the inserting blocks on the two ends of the U-shaped frame 1' are also inserted into the side cover forming cavity, when the mold is opened, the end of the second shaping block (221) slides out of the side cover forming cavity, the second-color mold (2) is provided with a second-color glue injection port (23) which is communicated with the side cover forming cavity, and product ejection assemblies are arranged on the first and second lower molds.

2. The injection mold for a dual-color top cover part on an automobile steering wheel according to claim 1, characterized in that: The first lower mold (12) is provided with a molding core (14) and a center block (15), the molding core (14) has a center hole (14a), the center block (15) is arranged in the center hole (14a), the inner periphery of the molding core (14) and the outer periphery of the center block (15) form a lower mold cavity (16) of a U-shaped frame forming cavity, the molding core (14) is provided with a first sliding groove (141), a second sliding groove (142), a third sliding groove (143) and a fourth sliding groove (144) distributed along the outer periphery of the center hole, the first molding rod (121), the second molding rod (122), the third molding rod (123) and the first molding block (124) are slidingly arranged in the respective sliding grooves, the center block (15) has a movable slot (151) accommodating the end of the second molding rod (122) sliding in and out, when the first color mold is closed, the ends of the first molding rod (121), the third molding rod (123) and the first molding block (124) slide inward and abut on the outer periphery of the center block (15), the end of the second molding rod (122) slides out of the movable slot (151) and abuts on the inner periphery of the molding core (14); when the mold is opened, the ends of the first molding rod (121), the third molding rod (123) and the first molding block (124) slide outward away from the center block (15) and out of the lower mold cavity (16), the end of the second molding rod (122) slides inward away from the molding core (14) and into the movable slot (151). The second lower mold (22) is provided with a molding core (14), a center block (15) and a first molding rod (121), a second molding rod (122) and a third molding rod (123) which have the same structure as the first lower mold (12), the first molding rod (121), the second molding rod (122), the third molding rod (123) and the second molding block (221) on the second lower mold (22) are slidingly arranged in the respective sliding grooves on the molding core (14).

3. The injection mold for a dual-color top cover part on an automobile steering wheel according to claim 2, characterized in that: The first color mold (1) is provided with a first row mechanism (1a) for sliding the first modeling rod (121) when the mold is opened and closed, a second row mechanism (1b) for sliding the second modeling rod (122), a third row mechanism (1c) for sliding the third modeling rod (123), and a fourth row mechanism (1d) for sliding the first modeling block (124). Each row mechanism includes a row block (1a1) slidingly arranged on the first lower mold (12) and a inclined guide block (1a2) connected to the first upper mold (11). The inclined guide cavity (1a11) of the first row mechanism (1a), the third row mechanism (1c) and the fourth row mechanism (1d) is inclined from top to bottom away from the center block (15). The inclined guide cavity (1a11) of the second row mechanism (1b) is inclined from top to bottom towards the center block (15). When the mold is closed, each inclined guide block (1a2) is in sliding cooperation with the corresponding inclined guide cavity (1a11), which can drive the corresponding first modeling rod (121), third modeling rod (123) and first modeling block (124) end to slide inwards towards the center block (15), and drive the second modeling rod (122) end to slide outwards towards the molding core (14). When the mold is opened, each inclined guide block (1a2) is in sliding cooperation with the corresponding inclined guide cavity (1a11), which can drive the corresponding first modeling rod (121), third modeling rod (123) and first modeling block (124) end to slide outwards away from the center block (15), and drive the second modeling rod (122) end to slide inwards away from the molding core (14). The second color mold (2) is provided with the first row mechanism (1a), the second row mechanism (1b), the third row mechanism (1c) and the fourth row mechanism (1d) which have the same structure as the first color mold (1). The row mechanisms on the second color mold (2) are respectively used to slide the corresponding first modeling rod (121), second modeling rod (122), third modeling rod (123) and second modeling block (221).

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