Multi-color multi-station mold

Abstract

The application provides a multi-color multi-station mold, and belongs to the technical field of lamp forming. The multi-color multi-station mold solves the problem of how to reduce the load of the main shaft while ensuring the forming quality of the product. The multi-color multi-station mold comprises a fixed mold, a movable mold and a main shaft, one end of the main shaft penetrates through the movable mold and is directed towards the fixed mold, and a rotating core is fixed at the end of the main shaft directed towards the fixed mold, the rotating core is in a columnar shape and is arranged along the radial direction of the main shaft, a positioning rod capable of extending and retracting along the radial direction of the main shaft is further arranged on the movable mold, an injection cavity can be formed when the movable mold and the fixed mold are in a closed mold state, one end of the rotating core penetrates into the injection cavity, the positioning rod is coaxially arranged with the rotating core in the injection cavity, and one end of the positioning rod can extend into the injection cavity and form a plug-in positioning with the end of the rotating core. The multi-color multi-station mold can ensure the stability of the rotating core, thereby improving the forming quality of the product.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle lamp forming, and relates to a multi-color multi-station mold. BACKGROUND

[0002] Some existing vehicle lamp products are transparent thick-walled parts, and one-time injection molding directly causes a long forming cycle, so the products are subjected to layered injection molding, and the more the layers are, the shorter the cycle is and the higher the production efficiency is. For example, if the product is divided into three layers, a three-color three-station injection molding machine is used to first inject one layer, then rotate by 120 DEG to inject the second layer, and then rotate by 120 DEG to inject the third layer. Therefore, the mold needs to have a rotating function, that is, a motor is designed on the mold to rotate the movable mold. When the first color product is solidified and formed, the movable mold needs to be rotated to change the cavity, so that the first color product enters the cavity for injection of the second color.

[0003] For example, a thick-walled product layered injection molding mold disclosed in a patent document (application number: 201810157185.5) includes an upper mold, a lower mold, a rotating plate, a driving device, and a rotating device. At least one first injection cavity and at least one second injection cavity are arranged on the rotating plate. At least one first glue inlet and at least one second glue inlet are formed on the upper mold. The rotating plate is connected with a rotating shaft at the bottom. The rotating shaft passes through the lower mold and extends from the bottom of the lower mold. The driving device drives the rotating shaft to move up and down, thereby driving the rotating plate to move up and down. The rotating device drives the rotating shaft to rotate, thereby driving the rotating plate to rotate. After the first layer is injected, it is automatically rotated to the corresponding position for the second layer injection, thereby realizing the layered injection molding of the thick-walled product in the same mold. The mold changes the cavity by rotating the rotating plate provided with the cavity. Since multiple cavities need to be formed on the rotating plate, the area of the rotating plate is large and the thickness is thick. Moreover, since the cavities are directly formed, the steel quality of the rotating plate is required to be high. These all result in a large weight of the rotating plate, which is supported on the rotating shaft and driven to lift and rotate by the rotating shaft. The large weight results in low rotation precision. Moreover, long-term use causes large wear of the rotating parts on the rotating shaft, thereby reducing the overall reliability and precision and affecting the forming quality of the product. SUMMARY

[0004] The application aims to solve the above problems of the existing technology and provides a multi-color multi-station mold to solve the problem of how to reduce the load of the main shaft while ensuring the forming quality of the product.

[0005] The object of the present application can be achieved by the following technical solution: a multi-color multi-station mold, comprising a fixed mold, a movable mold and a main shaft, characterized in that one end of the main shaft penetrates through the movable mold and is directed towards the fixed mold, and a rotating core is fixed at the end of the main shaft directed towards the fixed mold, the rotating core is columnar and is arranged radially along the main shaft, and a positioning rod capable of extending and retracting radially along the main shaft is further arranged on the movable mold, an injection cavity can be formed when the movable mold and the fixed mold are in a closed mold state, and one end of the rotating core penetrates into the injection cavity, the positioning rod is coaxially arranged with the rotating core in the injection cavity, and one end of the positioning rod can extend into the injection cavity and form a plug-in positioning with the end of the rotating core.

[0006] When the multi-color product is injection molded, the movable mold and the fixed mold are in a closed mold state, the rotating core penetrates into the injection cavity, the injection machine injects the first color molten plastic into one of the injection cavities, and after solidification, the first color product is formed, which wraps the rotating core positioned in the injection cavity, then the movable mold and the main shaft move away from the fixed mold synchronously to realize mold opening, then the main shaft moves towards the fixed mold relative to the movable mold, the rotating core can separate from the movable mold with the first color product, then the main shaft rotates the rotating core relative to the movable mold by a set angle, for example, if the mold is a three-color three-station mold, it is rotated by 120 degrees, so that the rotating core with the first color product is rotated to the second color station, then the main shaft moves relative to the movable mold to reset, and then the mold is closed, so that the first color product is located in the second color injection cavity, the injection machine injects the second color molten plastic into the second color injection cavity, and the original first color injection cavity continues to inject the first color molten plastic, and the above process is repeated after the second color product is solidified to injection mold the third color product. In order to reduce the load of the main shaft, the rotating core with small volume and light weight is used to position the product in the present application, so as to improve the stroke accuracy and position accuracy during rotation. Since the rotating core itself is columnar, a positioning rod is slidably arranged on the movable mold, when the movable mold and the fixed mold are closed and the rotating core is located in the injection cavity, the positioning rod can extend into the injection cavity, the positioning rod is coaxial with the rotating core, and the ends of the two form a plug-in positioning, that is, the positioning rod can position the end of the rotating core extending into the injection cavity, so that both ends of the rotating core are supported and positioned, thereby ensuring the stability of the rotating core when the molten plastic is injected into the injection cavity, and improving the forming quality of the product.

[0007] In the above-mentioned multi-color multi-station mold, the end of the injection cavity away from the main shaft has a through channel, when the movable mold and the fixed mold are in a closed mold state, the rotating core is located in the injection cavity and is coaxially arranged with the through channel, and the positioning rod extends into the injection cavity from the through channel. The through channel makes the positioning rod and the rotating core respectively inserted to form a counter-positioning, so that the rotating core is subjected to an axial positioning force, ensuring that the rotating core is more stable.

[0008] In the above multi-color multi-station mold, the outer diameter of the positioning rod gradually decreases from the outer end to the inner end, and the inner end of the positioning rod has a cylindrical positioning portion, the inner end face of the rotating core is provided with a positioning hole, when the rotating core and the positioning rod are both inserted into the injection cavity, the positioning portion is inserted into the positioning hole, and the outer peripheral surface of the positioning portion is attached to the hole wall of the positioning hole. The diameter of the outer end of the positioning rod is larger, which is used for the connection of itself to ensure the stability of itself, and the outer diameter of the inner end is smaller to reduce the occupation of the space in the injection cavity, and the positioning portion of the end portion is inserted into the positioning hole of the rotating core, and the two form a plug-in positioning to further ensure the stability of the rotating core.

[0009] In the above multi-color multi-station mold, the sliding block is connected to the dynamic mode along the axial direction of the through channel, the injection cavity is located between the main shaft and the sliding block, the positioning rod is fixed on the sliding block, and when the positioning rod is inserted into the injection cavity, the sliding block blocks the outer end port of the through channel, and the dynamic mode is further fixed with a driving member capable of driving the sliding block to reciprocatingly slide. The sliding block and the dynamic mode are in sliding fit, and the positioning rod is connected to the sliding block to ensure the stability of the positioning rod.

[0010] In the above multi-color multi-station mold, the sliding block includes a block-shaped sliding portion and a mounting portion located on the sliding portion and protruding towards the fixed mode, a mounting hole is provided through the mounting portion, the mounting hole is coaxially arranged with the through channel, and the mounting hole is a stepped hole with a small end facing the through channel, the outer end of the positioning rod has a cylindrical limiting portion, the outer end of the limiting portion has a disc-shaped connecting portion, the limiting portion is arranged in the section of the mounting hole with smaller diameter, the connecting portion is arranged in the section of the mounting hole with larger diameter, and a cover plate is further fixed on the side surface of the mounting portion away from the through channel, and the cover plate tightly covers the connecting portion in the mounting hole. The sliding portion is used for sliding connection with the dynamic mode to ensure the overall stability of the sliding block, the mounting portion is used for mounting the positioning rod, the mounting hole on the mounting portion is a stepped hole, the cover plate can tightly press the connecting portion on the positioning rod on the stepped surface of the mounting hole to realize the axial positioning of the positioning rod, the hole wall of the end of the mounting hole with smaller diameter is attached to the outer peripheral surface of the limiting portion to realize the radial limiting of the positioning rod, and the stability of the positioning rod is ensured.

[0011] In the above multi-color multi-station mold, the inner wall of the section of the mounting hole with larger diameter has a flat surface, the outer side surface of the connecting portion has a limiting notch, and the notch surface of the limiting notch is attached to the flat surface. The flat surface and the limiting notch are matched to realize the circumferential limiting of the positioning rod.

[0012] In the multi-color multi-station mold, the cover plate has a positioning slope on the side surface opposite to the through channel, the upper end of the positioning slope is inclined to the side where the through channel is located, the fixed mold has a positioning protrusion, the positioning protrusion has an inclined pressing surface, when the movable mold and the fixed mold are in the closed mold state, the pressing surface of the positioning protrusion can be tightly pressed on the positioning slope. When the movable mold and the fixed mold are closed, the pressing surface on the positioning protrusion can extrude the positioning slope, so that the slider has a tendency to move close to the injection cavity, thereby making the slider fully abut and block the through channel, and at the same time making the positioning rod fully abut on the rotating core, ensuring the reliable positioning of the rotating core.

[0013] In the multi-color multi-station mold, the fixed mold and the movable mold are both fixed with support rods, the two support rods are coaxially arranged, and one end of the two support rods is opposite and extends into the injection cavity. The ends of the two support rods abut on both sides of the rotating core along the radial direction of the rotating core. The two support rods can be radially supported on the rotating core, combined with the axial abutment of the positioning rod, thereby ensuring the stability of the rotating core when injecting molten plastic in the injection cavity.

[0014] In the multi-color multi-station mold, the movable mold has a mounting groove, the slider is arranged in the mounting groove, both sides of the mounting groove have a stepped surface, and the stepped surface is fixed with a guide pressing strip. The lower side of the guide pressing strip and the bottom surface of the mounting groove form a guide groove, the lower side of the slider abuts on the bottom surface of the mounting groove, both sides of the slider have protruding guide portions, and the two guide portions are respectively slidably connected in the two guide grooves. The two guide portions are respectively located on both sides of the slider and are limited in the guide grooves formed by the guide pressing strips and the bottom surface of the mounting groove, thereby ensuring the stability of the reciprocating movement of the slider.

[0015] In the multi-color multi-station mold, the driving member includes a driving oil cylinder fixed on the movable mold, the piston rod end of the driving oil cylinder extends into the mounting groove and is fixed with a connecting head, the slider has a clamping notch, and the connecting head is clamped in the clamping notch of the slider. The piston rod of the driving oil cylinder is clamped with the clamping notch of the slider through the connecting head, so as to transmit the thrust and pull force to the slider without additional force in other directions, thereby ensuring the stability of the slider.

[0016] In the multi-color multi-station mold, the slider has two buffer sleeves fixed on the side surface opposite to the through channel, and the two buffer sleeves are opposite to the mounting groove. When the slider moves to make the positioning rod withdraw from the injection cavity, the buffer sleeves abut on the mounting groove to avoid hard collision.

[0017] Compared with the prior art, the multi-color multi-station mold has the following advantages:

[0018] 1. Because the spindle uses a small and lightweight rotating core to position the product, the spindle load can be reduced and the stroke accuracy and position accuracy during rotation can be improved.

[0019] 2. Since the positioning rod can extend into the injection cavity, the positioning rod is coaxial with the rotating core, and the ends of the two form an insertion positioning. That is, the positioning rod can position the end of the rotating core that extends into the injection cavity, so that both ends of the rotating core are supported and positioned, thereby ensuring the stability of the rotating core when molten plastic is injected into the injection cavity, and thus improving the molding quality of the product.

[0020] 3. Since there are support rods fixed on both the fixed mold and the moving mold, the two support rods can be supported radially against the rotating core. Combined with the axial support and positioning of the positioning rod, the stability of the rotating core is ensured when molten plastic is injected into the injection cavity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of a multi-color, multi-station mold.

[0022] Figure 2 It is a structural cross-sectional view of a multi-color, multi-station mold.

[0023] Figure 3 This is a schematic diagram of the structure when the main shaft is not extended in the mold open state.

[0024] Figure 4 This is a schematic diagram of the structure when the main shaft extends out of the mold.

[0025] Figure 5 yes Figure 2 The structural cross-sectional view at point AA.

[0026] Figure 6 yes Figure 2 Enlarged view of the structure at point B in the middle.

[0027] Figure 7 yes Figure 5 Enlarged view of the structure at point C.

[0028] Figure 8 This is a schematic diagram of a partial structure at the slider on the moving mold.

[0029] In the figure, 1, fixed mold; 11, fixed mold block; 111, fixed mold cavity; 12, positioning protrusion; 121, pressing surface; 2, movable mold; 21, movable mold block; 211, movable mold cavity; 22, mounting groove; 23, guide pressing strip; 24, guide groove; 3, main shaft; 31, mounting seat; 4, rotating core; 41, positioning hole; 5, injection cavity; 51, notch; 52, through channel; 6, positioning rod; 61, positioning part; 62, limiting part; 63, connecting part; 631, limiting notch; 7, sliding block; 71, sliding part; 72, mounting part; 73, mounting hole; 74, cover plate; 741, positioning inclined surface; 75, guide part; 76, clamping notch; 77, buffer sleeve; 8, supporting rod; 9, driving piece; 91, connecting head. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the present application and further describes the technical solutions of the present application in conjunction with the drawings, but the present application is not limited to these embodiments.

[0031] As Figures 1 to 4 shown, a multi-color multi-station mold includes a fixed mold 1 and a movable mold 2, the movable mold 2 can be horizontally moved relative to the fixed mold 1 by the drive of an injection molding machine to realize mold opening and closing, a main shaft 3 is horizontally arranged at the center position of the movable mold 2, the inner end of the main shaft 3 faces the fixed mold 1, the main shaft 3 can be synchronously moved with the movable mold 2 to realize mold opening and closing under the drive of the injection molding machine, and can be axially moved and circumferentially rotated relative to the movable mold 2 when the movable mold 2 is in the mold opening state. Three fixed mold blocks 11 are fixedly embedded on the side of the fixed mold 1 facing the movable mold 2, the fixed mold blocks 11 are each provided with a fixed mold cavity 111 with an opening facing the movable mold 2, three movable mold blocks 21 are fixedly embedded on the side of the movable mold 2 facing the fixed mold 1, the movable mold blocks 21 are each provided with a movable mold cavity 211 with an opening facing the fixed mold 1, the three movable mold cavities 211 correspond to the three fixed mold cavities 111 one by one, and when the movable mold 2 and the fixed mold 1 are in the mold closing state, the movable mold cavities 211 and the fixed mold cavities 111 jointly form injection cavities 5, that is, three injection cavities 5 are formed by mold closing. The fixed mold cavities 111 and the movable mold cavities 211 each have a notch 51 penetrating in the direction of the main shaft 3, the mounting seat 31 is fixed on the end of the main shaft 3 facing the fixed mold 1, and three rotating cores 4 are fixed on the mounting seat 31 and circumferentially distributed around the main shaft 3, the rotating cores 4 are columnar and arranged radially along the main shaft 3, and when the movable mold 2 and the fixed mold 1 are in the mold closing state, the rotating cores 4 are arranged in the injection cavities 5 through the notches 51. In combination with Figure 5As shown, the movable mold 2 is further provided with a positioning rod 6 capable of extending and retracting along the radial direction of the main shaft 3, the positioning rod 6 is coaxially arranged with the rotating core 4 in the injection cavity 5, the injection cavity 5 is provided with a through channel 52 at the end away from the main shaft 3, the rotating core 4 is located in the injection cavity 5 and coaxially arranged with the through channel 52, one end of the positioning rod 6 is capable of extending into the injection cavity 5 from the through channel 52 and forming a plug-in positioning with the end of the rotating core 4. The fixed mold insert 11 and the movable mold insert 21 are both fixed with support rods 8, the two support rods 8 are coaxially arranged, and one end of the two support rods 8 is opposite and extends into the injection cavity 5, and the end of the two support rods 8 abuts against the rotating core 4 on both sides of the end of the rotating core 4 along the radial direction of the rotating core 4.

[0032] Specifically, as shown in Figure 6 、 Figure 7 、 Figure 8 , the outer diameter of the positioning rod 6 gradually decreases from the outer end to the inner end, and the inner end of the positioning rod 6 is provided with a cylindrical positioning portion 61, the inner end surface of the rotating core 4 is provided with a positioning hole 41, when the rotating core 4 and the positioning rod 6 are both extended into the injection cavity 5, the positioning portion 61 is plugged into the positioning hole 41, and the outer peripheral surface of the positioning portion 61 is in close contact with the hole wall of the positioning hole 41. The movable mold 2 is slidingly connected with a sliding block 7 along the axial direction of the through channel 52, the injection cavity 5 is located between the main shaft 3 and the sliding block 7, the sliding block 7 includes a block-shaped sliding portion 71 and a mounting portion 72 located on the sliding portion 71 and protruding towards the fixed mold 1, the mounting portion 72 is provided with a mounting hole 73 extending therethrough, the mounting hole 73 is coaxially arranged with the through channel 52, and the mounting hole 73 is a stepped hole with a small end facing the through channel 52, the inner wall of the larger diameter section of the mounting hole 73 is provided with a flat surface, the outer end of the positioning rod 6 is provided with a cylindrical limiting portion 62, the outer end of the limiting portion 62 is provided with a disc-shaped connecting portion 63, the outer side surface of the connecting portion 63 is provided with a limiting cutout 631, the limiting portion 62 is arranged in the smaller diameter section of the mounting hole 73, the connecting portion 63 is arranged in the larger diameter section of the mounting hole 73, the cutout surface of the limiting cutout 631 is in close contact with the flat surface, and the mounting portion 72 is further fixed with a cover plate 74 on the side surface away from the through channel 52, the cover plate 74 tightly covers the connecting portion 63 in the mounting hole 73. The side surface of the cover plate 74 away from the through channel 52 is provided with a positioning inclined surface 741, the upper end of the positioning inclined surface 741 is inclined towards the side where the through channel 52 is located, the fixed mold insert 11 is provided with a positioning protrusion 12, the positioning protrusion 12 is provided with an inclined pressing surface 121, when the movable mold 2 and the fixed mold 1 are in a closed mold state, the pressing surface 121 of the positioning protrusion 12 can be tightly pressed on the positioning inclined surface 741, so that the sliding block 7 blocks the through channel 52.

[0033] The movable die 2 is provided with a mounting groove 22, and the sliding block 7 is arranged in the mounting groove 22. The two sides of the mounting groove 22 are provided with stepped surfaces, and the stepped surfaces are fixed with guiding pressing strips 23. The guiding pressing strips 23 are provided with guiding grooves 24 between the lower sides and the bottom surfaces of the mounting groove 22. The lower side of the sliding block 7 is attached to the bottom surface of the mounting groove 22. The two sides of the sliding block 7 are provided with protruding guiding portions 75, and the two guiding portions 75 are respectively slidably connected in the two guiding grooves 24. The sliding block 7 is fixed with two buffer sleeves 77 on the side away from the through channel 52, and the two buffer sleeves 77 are opposite to the groove walls of the mounting groove 22. The movable die 2 is further fixed with a driving member 9. The driving member 9 comprises a driving oil cylinder fixed on the movable die 2. The piston rod end of the driving oil cylinder extends into the mounting groove 22 and is fixed with a connecting head 91. The sliding block 7 is provided with a clamping notch 76, and the connecting head 91 is clamped in the clamping notch 76 of the sliding block 7.

[0034] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0035] Although the terms such as the fixed die 1, the fixed die insert 11, the fixed die cavity 111 are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present application; any kind of additional limitation by interpreting them is contrary to the spirit of the present application.

Claims

1. A multicolour multi-station mould comprising a fixed mould (1), a movable mould (2) and a spindle (3), characterised in that, The main shaft (3) passes through the movable die (2) and is towards the fixed die (1), and a rotating core (4) is fixed at the end of the main shaft (3) towards the fixed die (1), the rotating core (4) is columnar and is arranged radially along the main shaft (3), the movable die (2) is further provided with a positioning rod (6) capable of expanding and contracting radially along the main shaft (3), an injection cavity (5) can be formed when the movable die (2) and the fixed die (1) are in a closed mold state, and one end of the rotating core (4) penetrates into the injection cavity (5), the positioning rod (6) is coaxially arranged with the rotating core (4) in the injection cavity (5), and one end of the positioning rod (6) can extend into the injection cavity (5) and form a plug-in positioning with the end of the rotating core (4); the end of the injection cavity (5) away from the main shaft (3) has a through channel (52), the movable die (2) is slidably connected with a sliding block (7) along the axial direction of the through channel (52), the injection cavity (5) is located between the main shaft (3) and the sliding block (7), the positioning rod (6) is fixed on the sliding block (7), the outer diameter of the positioning rod (6) gradually decreases from the outer end to the inner end, and the inner end of the positioning rod (6) has a columnar positioning portion (61), the inner end surface of the rotating core (4) is provided with a positioning hole (41), when the movable die (2) and the fixed die (1) are in a closed mold state, the rotating core (4) is located in the injection cavity (5) and is coaxially arranged with the through channel (52), the positioning rod (6) extends into the injection cavity (5) from the through channel (52), the positioning portion (61) is inserted into the positioning hole (41), and the outer peripheral surface of the positioning portion (61) is fitted with the hole wall of the positioning hole (41), and the sliding block (7) blocks the outer end port of the through channel (52).

2. The multi-color multi-station mold of claim 1, wherein, The movable die (2) is further provided with a driving member (9) capable of driving the sliding block (7) to reciprocally slide.

3. The multi-color multi-station mold of claim 2, wherein, The sliding block (7) comprises a block-shaped sliding portion (71) and a mounting portion (72) protruding towards the fixed die (1) and located on the sliding portion (71), the mounting portion (72) is provided with a mounting hole (73) penetrating therethrough, the mounting hole (73) is coaxially arranged with the through channel (52), and the mounting hole (73) is a stepped hole with a small end facing the through channel (52), the outer end of the positioning rod (6) has a columnar limiting portion (62), the outer end of the limiting portion (62) has a disc-shaped connecting portion (63), the limiting portion (62) is arranged in the section of the mounting hole (73) with smaller diameter, the connecting portion (63) is arranged in the section of the mounting hole (73) with larger diameter, and the side surface of the mounting portion (72) away from the through channel (52) is further provided with a cover plate (74), the cover plate (74) tightly covers and seals the connecting portion (63) in the mounting hole (73).

4. The multi-color multi-station mold of claim 3, wherein, The section of the mounting hole (73) with larger diameter has a flat surface on the inner wall, the outer side surface of the connecting portion (63) has a limiting notch (631), and the notch surface of the limiting notch (631) is fitted on the flat surface.

5. The multi-color multi-station mold of claim 3, wherein, The cover plate (74) has a positioning slope (741) on the side away from the through channel (52), the upper end of the positioning slope (741) is inclined to the side where the through channel (52) is located, the fixed mold (1) has a positioning protrusion (12), the positioning protrusion (12) has an inclined pressing surface (121), when the movable mold (2) and the fixed mold (1) are in the closed mold state, the pressing surface (121) of the positioning protrusion (12) can be tightly pressed on the positioning slope (741).

6. The multi-color multi-station mold of claim 1, wherein, The fixed mold (1) and the movable mold (2) are both fixed with support rods (8), the two support rods (8) are coaxially arranged, and one end of the two support rods (8) is opposite and extends into the injection cavity (5), and the ends of the two support rods (8) are respectively abutted on the two sides of the rotating core (4) along the radial direction of the rotating core (4).

7. The multi-color multi-station mold of claim 2, wherein, The movable mold (2) is provided with a mounting groove (22), the sliding block (7) is arranged in the mounting groove (22), the two sides of the mounting groove (22) are both provided with a stepped surface, the stepped surface is fixed with a guide pressing strip (23), the lower side of the guide pressing strip (23) and the bottom surface of the mounting groove (22) form a guide groove (24), the lower side of the sliding block (7) is abutted on the bottom surface of the mounting groove (22), the two sides of the sliding block (7) are both provided with a protruding guide part (75), and the two guide parts (75) are respectively slidably connected in the two guide grooves (24).

8. The multi-color multi-station mold of claim 7, wherein, The driving member (9) comprises a driving oil cylinder fixed on the movable mold (2), the piston rod end of the driving oil cylinder extends into the mounting groove (22) and is fixedly connected with a connecting head (91), the sliding block (7) is provided with a clamping notch (76), and the connecting head (91) is clamped in the clamping notch (76) of the sliding block (7).

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