A high-efficiency eyeshadow box injection mold for continuous production

Abstract

The present invention discloses a high-efficiency eye shadow box injection mold for continuous production, comprising a mold support, a fixed mold mechanism, a movable mold mechanism and two flipping mechanisms; the fixed mold mechanism comprises a fixed mold base and a first mold core and a second mold core slidably arranged on the fixed mold base; the movable mold mechanism comprises a movable mold base and a third mold core and a fourth mold core slidably arranged on the movable mold base; claw groups are provided at both ends of the movable mold base; each flipping mechanism comprises a flipping base, a flipping slider slidably arranged on the flipping base, a clamping rod rotatably arranged on the flipping slider and having a cavity at one end, a driving groove arranged on the flipping base and a bayonet elastically arranged at the other end of the clamping rod; the bayonet is movably embedded in the driving groove; a reset spring is provided between the flipping slider and the lower end of the flipping base; and slots for snapping with the claw groups are provided on both sides of the flipping slider; thereby shortening the production cycle, improving production efficiency, and making the two-color transition more natural and smooth, the finished product more beautiful, effectively reducing the defective rate, and also helping to reduce production costs.

Description

Technical Field

[0001] The invention relates to the technical field of eye shadow box molding, in particular to a high-efficiency eye shadow box injection mold for continuous production. Background Art

[0002] Existing two-color eyeshadow boxes usually use two sets of injection molds. First, a plastic part of one color is injected. After it is initially formed and solidified, it is placed as an insert in another injection mold to inject the second color.

[0003] This structural production method not only prolongs the production cycle, increases production costs, and reduces production efficiency, but also easily leads to quality problems such as unnatural color transitions, affecting the product's aesthetics and quality stability. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a high-efficiency eye shadow box injection mold for continuous production, which completes the injection molding of a two-color eye shadow box in two mold closing processes of a set of molds, thereby shortening the production cycle and improving production efficiency. The two-color transition is more natural and smooth, the finished product is more beautiful, the defective rate is effectively reduced, and it is also beneficial to reduce production costs.

[0005] To achieve the above-mentioned object, the specific scheme of the present invention is as follows: a high-efficiency eye shadow box injection mold for continuous production, comprising a mold support, a fixed mold mechanism disposed on the top of the mold support, a movable mold mechanism disposed at the bottom of the mold support for lifting and lowering, and two turning mechanisms disposed symmetrically on both sides of the mold support;

[0006] The fixed mold mechanism includes a fixed mold base and a first mold core and a second mold core slidably arranged on the fixed mold base; the movable mold mechanism includes a movable mold base and a third mold core and a fourth mold core slidably arranged on the movable mold base; both ends of the movable mold base are provided with a claw group;

[0007] Each flipping mechanism includes a flip seat, a flip slider slidingly arranged on the flip seat, a clamping rod rotatably arranged on the flip slider and having a cavity at one end, a driving groove arranged on the flip seat and a latch elastically arranged at the other end of the clamping rod; the latch is movably embedded in the driving groove; a return spring is provided between the flip slider and the lower end of the flip seat; and slots are provided on both sides of the flip slider for snapping with the claw group.

[0008] Optionally, when the fixed mold mechanism and the movable mold mechanism are closed for the first time, the first mold core, the second mold core, the third mold core, the fourth mold core, the movable mold base and the two mold cavities are combined to form a first mold cavity, and the claw group is snap-fitted with the clamping groove; a first injection molded part is formed in the first mold cavity, and the first injection molded part includes a fixing ear formed in the mold cavity;

[0009] When the fixed mold mechanism and the movable mold mechanism are closed for the second time, the first mold core, the second mold core, the first mold core, the second mold core, the first injection molded part and the fixed mold base are combined to form a second mold cavity; and the second injection molded part is formed in the second mold cavity;

[0010] When the fixed mold mechanism and the movable mold mechanism open the mold for the first time, the two clamping rods drive the first injection molded part to flip 180 degrees under the cooperation of the bayonet pin and the driving groove.

[0011] Optionally, a first spring is provided between the first mold core and the second mold core; and a second spring with a stiffness greater than that of the first spring is provided between the second mold core and the fixed mold base.

[0012] Optionally, the two ends of the bottom of the third mold core are connected to a first limit block; two L-shaped second limit blocks are slidingly provided in the movable mold base; one end of the two second limit blocks contacts and cooperates with the inclined surface of the fourth mold core; the lower ends of the two first limit blocks contact and cooperate with the inclined surfaces of the other ends of the two second limit blocks in a one-to-one correspondence; a third spring is connected between the two second limit blocks; the stiffness of the third spring is greater than the stiffness of the first spring and less than the stiffness of the second spring.

[0013] Optionally, each claw group includes a claw arm and an elastic card; one end of the claw arm is connected to the movable mold base, and the elastic card is provided at the other end of the claw arm.

[0014] Optionally, the driving groove includes an X-shaped connecting groove and two vertically parallel straight segments; the two upper ends and the two lower ends of the X-shaped connecting groove are respectively connected to the two straight segments, and the two lower ends of the X-shaped connecting groove are respectively provided with blocking steps at the intersection with the straight segments; the straight segments are provided with a first transition step above the blocking step; the two upper ends of the X-shaped connecting groove are respectively provided with a second transition step; the latch is diamond-shaped.

[0015] Optionally, a mounting boss is provided at the lower end of the flip seat; two limit rods extending vertically downward are provided at the upper end of the flip seat; a stop platform is provided at the lower end of the limit rod; the flip slider is slidably sleeved on the two limit rods; and a reset spring is connected between the mounting boss and the flip slider.

[0016] Optionally, the movable mold mechanism also includes a lifting seat; a guide rod is provided at the bottom of the lifting seat; the guide rod movably passes through the bottom of the mold support; the movable mold seat is provided at the top of the lifting seat; and the claw group is fixed on the lifting seat.

[0017] Optionally, the movable mold mechanism also includes an ejector plate arranged below the lifting seat, and the four corner positions of the top surface of the ejector plate are respectively provided with ejector rods extending vertically upward; the ejector rods move upward in sequence to pass through the lifting seat, the movable mold seat and the third mold core; each ejector rod is provided with a fourth spring; the two ends of the fourth spring are respectively in contact with the lifting seat and the ejector plate.

[0018] Optionally, cooling water channels are provided in both the fixed mold base and the movable mold base.

[0019] The beneficial effects of the present invention are as follows: the present invention arranges a first mold core and a second mold core on the fixed mold mechanism, arranges a third mold core, a fourth mold core and a claw group on the movable mold mechanism, and arranges a flip mechanism on both sides of the mold support, the flip mechanism is provided with a pin that cooperates with the drive groove, the clamping rod is provided with a cavity, and the flip slider is provided with a slot that snaps with the claw group, so that the movable mold mechanism cooperates with the flip mechanism, and the injection molding of the two-color eye shadow box can be completed in the two mold closing processes of a set of molds, thereby shortening the production cycle and improving production efficiency, and the two-color transition is more natural and smooth, the finished product is more beautiful, effectively reducing the defective rate, and also helping to reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention during the first mold closing;

[0022] Figure 3 It is a cross-sectional view of the present invention during the second mold closing;

[0023] Figure 4 It is a structural schematic diagram of the fixed mold mechanism of the present invention;

[0024] Figure 5 It is a cross-sectional schematic diagram of the fixed mold mechanism of the present invention during the first mold closing;

[0025] Figure 6 It is a cross-sectional schematic diagram of the fixed mold mechanism of the present invention during the second mold closing;

[0026] Figure 7 It is a structural schematic diagram of the movable mold mechanism of the present invention;

[0027] Figure 8 2 is a cross-sectional schematic diagram of the movable mold mechanism of the present invention during the first mold closing;

[0028] Figure 9 It is a cross-sectional schematic diagram of the movable mold mechanism of the present invention during the second mold closing;

[0029] Figure 10 It is a structural schematic diagram of the turning mechanism of the present invention;

[0030] Explanation of reference numerals: 1, mold support; 11, top plate; 12, bottom plate; 13, support column; 21, fixed mold base; 22, first mold core; 23, second mold core; 24, first spring; 25, second spring; 31, movable mold base; 32, third mold core; 33, fourth mold core; 34, first limit block; 35, second limit block; 36, third spring; 37, claw assembly; 371, claw arm; 372, elastic card; 38, lifting seat; 381, guide Toward rod; 39, ejector plate; 391, ejector rod; 392, fourth spring; 41, flip seat; 411, mounting boss; 412, limit rod; 413, stop platform; 42, flip slider; 421, slot; 43, clamping rod; 431, cavity; 441, straight section; 442, X-shaped connecting groove; 443, blocking step; 444, first transition step; 445, second transition step; 45, latch; 46, return spring; 5, cooling water channel. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0032] like Figures 1 to 10 As shown, the embodiment of the present invention provides a high-efficiency eye shadow box injection mold for continuous production, comprising a mold support 1; a fixed mold mechanism disposed on the top of the mold support 1, a movable mold mechanism disposed at the bottom of the mold support 1 for lifting and lowering, and two flipping mechanisms disposed symmetrically on both sides of the mold support 1;

[0033] Specifically, if Figure 1 As shown, the mold support 1 includes a top plate 11 and a bottom plate 12; four support columns 13 distributed in a rectangular shape are fixedly connected between the top plate 11 and the bottom plate 12;

[0034] like Figures 1 to 6 As shown, the fixed mold mechanism includes a fixed mold base 21 fixedly mounted on the top plate 11 and a first mold core 22 and a second mold core 23 slidably arranged on the fixed mold base 21; the first mold core 22 is located below the second mold core 23, and the fixed mold mechanism is provided with two independent color pouring pipes (not shown in the figure) that pass through the fixed mold base 21, the first mold core 22 and the second mold core 23. The two color pouring pipes are respectively connected to the injection molding raw material supply pipelines of different colors. The interiors of the two color pouring pipes are smooth to ensure smooth flow of the plastic melt; as shown Figures 1 to 3 、 Figures 7 to 9 As shown, the movable mold mechanism includes a movable mold base 31 that is lifted and lowered on the bottom plate 12 and a third mold core 32 and a fourth mold core 33 that are slidably mounted on the movable mold base 31; claw groups 37 are provided at both ends of the movable mold base 31;

[0035] like Figures 1 to 3 、 Figure 10As shown, each flipping mechanism includes a flip seat 41, a flip slider 42 slidably arranged on the flip seat 41, a clamping rod 43 rotatably arranged on the flip slider 42 and having a cavity 431 at one end, a driving groove arranged on the flip seat 41 and a pin 45 elastically arranged at the other end of the clamping rod 43; the two ends of the flip seat 41 are fixedly connected to the top plate 11 and the bottom plate 12; the pin 45 is movably embedded in the driving groove; a reset spring 46 is provided between the flip slider 42 and the lower end of the flip seat 41; and slots 421 for snapping with the claw group 37 are provided on both sides of the flip slider 42.

[0036] Specifically, when the fixed mold mechanism and the movable mold mechanism are closed for the first time, the first mold core 22, the second mold core 23, the third mold core 32, the fourth mold core 33, the movable mold base 31 and the two mold cavities 431 are combined to form a first mold cavity. Figure 2 As shown, the claw group 37 is snap-fitted with the slot 421; the first injection molded part is formed in the first mold cavity, and the first injection molded part includes a fixing ear formed in the mold cavity 431; when the fixed mold mechanism and the movable mold mechanism are molded for the second time, the first mold core 22, the second mold core 23, the first injection molded part and the fixed mold base 21 are combined to form the second mold cavity, as shown Figure 3 As shown; a second injection molded part is formed in the second mold cavity; when the fixed mold mechanism and the movable mold mechanism open the mold for the first time, the two clamping rods 43 drive the first injection molded part to flip 180 degrees in cooperation with the bayonet 45 and the drive groove.

[0037] In actual use, the movable mold base 31 is connected to an external press, and the external press drives the movable mold mechanism to move upward toward the fixed mold mechanism through the movable mold base 31 until the movable mold mechanism and the fixed mold mechanism complete the first mold closing. At this time, the first mold core 22, the second mold core 23, the third mold core 32, the fourth mold core 33, the movable mold base 31 and the two mold cavities 431 are combined to form a first mold cavity, as shown in FIG. Figure 2 As shown, the first color of the injection molding material is then injected into the first mold cavity through one of the color pouring tubes, so that the first color of the injection molding material is molded into a first injection molded part in the first mold cavity. The first injection molded part is formed with fixing ears in the mold cavities 431 of the two clamping rods 43. At this time, the first injection molding is completed, and the claw group 37 is snap-fitted with the clamping groove 421 on the flip slider 42.

[0038] Then, the external press drives the movable mold mechanism to move downward away from the fixed mold mechanism to perform the first mold opening. At this time, due to the snap fit between the claw group 37 and the slot 421 on the flip slider 42, the movable mold mechanism drives the flip slider 42 to move downward synchronously through the claw group 37. The two clamping rods 43 drive the first molded part to move downward synchronously. The latch 45 moves along the trajectory of the drive groove, and the return spring 46 is compressed. As the movable mold mechanism moves downward, the claw group 37 and the slot 421 are disengaged. At this time, the return spring 46 pushes the flip slider 42 to move upward. At this time, under the cooperation of the latch pin 45 and the drive groove, the two clamping rods 43 drive the first injection molded part to flip 180 degrees.

[0039] After the flip slider 42 is completely reset, the external press drives the movable mold mechanism and the fixed mold mechanism to close the mold for the second time. At this time, the first mold core 22, the second mold core 23, the first injection molded part and the fixed mold base 21 are combined to form the second mold cavity. Figure 3 As shown, during the mold closing process of the movable mold base 31, the third mold core 32 cuts off the fixing ear located in the mold cavity 431 of the clamping rod 43, so that the fixing ear is separated from the first injection molded part. Then, the second color injection molding material is injected into the second mold cavity through another color pouring pipe, so that the second color injection molding material is molded into the second injection molded part in the second mold cavity. At this time, the second injection molded part is combined with the first injection molded part to form a two-color eyeshadow box;

[0040] Then the external press drives the movable mold mechanism to move downward away from the fixed mold mechanism to open the mold for the second time. After the mold is opened, the two-color eye shadow box can be taken out from the movable mold mechanism.

[0041] It should be noted that although the movable mold mechanism will still drive the flip slider 42 to move downward when the mold is opened for the second time, after the claw group 37 and the card slot 421 are disengaged from the snap fit, the flip slider 42 moves upward, and at this time the fixed ear in the cavity 431 is separated from the first injection molded part, that is, the clamping rod 43 will not drive the molded two-color eye shadow box to move upward for flipping. After the flip slider 42 is reset, the fixed ears in the cavity 431 of the two clamping rods 43 are blown out of the cavity 431 by the air blowing and unloading mechanism, so that the next two-color eye shadow box can be injection molded.

[0042] In this embodiment, a first mold core 22 and a second mold core 23 are provided on the fixed mold mechanism, a third mold core 32, a fourth mold core 33 and a claw group 37 are provided on the movable mold mechanism, and a flip mechanism is provided on both sides of the mold support 1. The flip mechanism is provided with a latch pin 45 that cooperates with the drive groove, the clamping rod 43 is provided with a cavity 431, and the flip slider 42 is provided with a latch groove 421 that snaps with the claw group 37. Therefore, through the cooperation between the movable mold mechanism and the flip mechanism, the injection molding of the two-color eye shadow box can be completed in the two mold closing processes of a set of molds, thereby shortening the production cycle and improving production efficiency. The transition between the two colors is more natural and smooth, the finished product is more beautiful, the defective rate is effectively reduced, and it is also beneficial to reduce production costs.

[0043] like Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, in the high-efficiency eye shadow box injection mold described in this embodiment, in some embodiments, a first spring 24 is provided between the first mold core 22 and the second mold core 23, and the number of the first springs 24 is provided. The two first springs 24 are spaced and arranged side by side; a second spring 25 with a stiffness greater than that of the first spring 24 is provided between the second mold core 23 and the fixed mold base 21, and the number of the second springs 25 is provided. The two second springs 25 are spaced and arranged side by side; with such a configuration, at the initial stage, under the action of the first spring 24 and the second spring 25, the first mold core 22 protrudes out of the fixed mold base 21; when the mold is closed for the first time , the third mold core 32 squeezes the first mold core 22, so that the first spring 24 is compressed, so that the first mold core 22, the second mold core 23, the third mold core 32, the fourth mold core 33, the movable mold base 31 and the two mold cavities 431 are jointly surrounded to form a first mold cavity to inject the first injection molded part of the first color; and during the second mold closing, the movable mold mechanism compresses the first spring 24 and the second spring 25, so that the third mold core 32 cuts off the fixed ear, and the first mold core 22, the second mold core 23, the first injection molded part and the fixed mold base 21 are jointly surrounded to form a second mold cavity to inject the second injection molded part of the second color.

[0044] like Figure 2 、 Figure 3 、 Figure 8 and Figure 9As shown, in the high-efficiency eyeshadow box injection mold described in this embodiment, in some embodiments, the two ends of the bottom of the third mold core 32 are connected to the first limit blocks 34; two L-shaped second limit blocks 35 are slidably provided in the movable mold base 31; one end of the two second limit blocks 35 is in contact with the inclined surface of the fourth mold core 33; the lower ends of the two first limit blocks 34 are in contact with the inclined surfaces of the other ends of the two second limit blocks 35 in a one-to-one correspondence; a third spring 36 is connected between the two second limit blocks 35; the stiffness of the third spring 36 is greater than the stiffness of the first spring 24 and less than the stiffness of the second spring 25. Through the above arrangement, in this embodiment, at the initial stage, the two second limit blocks 35 slide away from each other under the elastic force of the third spring 36, and the two second limit blocks 35 each lift the first limit block 34, so that the third mold core 32 protrudes outward from the movable mold base 31, and the fourth mold core 33 is retracted inward into the movable mold base 31;

[0045] During the first mold closing, the third mold core 32 keeps protruding outward from the movable mold base 31 and is tightly pressed against the first mold core 22 for mold closing; during the second mold closing, the third mold core 32 first squeezes the first mold core 22 inward, and the first spring 24 is compressed. Then, since the stiffness of the second spring 25 is greater than the stiffness of the third spring 36, the third mold core 32 is squeezed inward and shrinks. The first limit block 34 squeezes the second limit block 35 to move toward each other through the inclined contact, and the third spring 36 is compressed. The second limit block 35 drives the fourth mold core 33 to extend outward through the inclined contact, and then the protruding fourth mold core 33 continues to squeeze the first mold core 22, so that the second spring 25 is compressed, so that the first mold core 22, the second mold core 23, the first injection molded part and the fixed mold base 21 are jointly surrounded to form a second mold cavity to inject the second injection molded part of the second color.

[0046] Through the above arrangement, the two clamping actions of the movable mold mechanism can be utilized to change the shape of the mold cavity, and the flipping mechanism can be used to drive the first injection molded part to flip 180 degrees after molding, thereby realizing the injection molding of a two-color eye shadow box in the same set of molds, improving production efficiency and reducing production costs.

[0047] like Figure 7As shown, in the high-efficiency eyeshadow box injection mold described in this embodiment, in some embodiments, each claw group 37 includes a claw arm 371 and an elastic card 372; one end of the claw arm 371 is connected to the movable mold base 31, and the elastic card 372 is provided at the other end of the claw arm 371. In this embodiment, the elastic card 372 cooperates with the card slot 421, so that when the movable mold mechanism and the fixed mold mechanism are closed, the elastic card 372 can be snapped into the card slot 421. When the movable mold mechanism opens the mold, the snap fit between the elastic card 372 and the card slot 421 can drive the flip slider 42 to move synchronously. When the flip slider 42 moves to the bottom dead center position, the elastic card 372 can be disengaged from the snap fit with the card slot 421, so that the flip slider 42 is automatically reset under the action of the reset spring 46.

[0048] like Figure 10 As shown, the high-efficiency eye shadow box injection mold described in this embodiment, in some embodiments, the driving groove includes an X-shaped connecting groove 442 and two vertically parallel straight segments 441; the two upper ends and the two lower ends of the X-shaped connecting groove 442 are respectively connected to the two straight segments 441, and the two lower ends of the X-shaped connecting groove 442 are respectively provided with blocking steps 443 at the intersection with the straight segments 441; the straight segment 441 is provided with a first transition step 444 above the blocking step 443; the two upper ends of the X-shaped connecting groove 442 are respectively provided with a second transition step 445; the latch 45 is diamond-shaped.

[0049] For the convenience of explaining this embodiment, the two straight segments 441 of the driving groove are respectively defined as a left straight segment 441 and a right straight segment 441 , and the explanation is given by taking the latch 45 being located in the right straight segment 441 as an example.

[0050] Specifically, at the beginning, under the elastic force of the return spring 46, the flip slider 42 is at the top dead center position, and the latch 45 is at the upper end of the right straight section 441. When the mold is opened for the first time, the flip slider 42 drives the latch 45 to move downward along the right straight section 441 until the flip slider 42 moves down to the bottom dead center position. After the elastic card 372 and the latch groove 421 are disengaged, the flip slider 42 moves upward. During the upward movement, the latch 45 is blocked by the blocking step 443 and enters the X-shaped connecting groove 442. Since the latch 45 is arranged in a diamond shape, the latch 45 can smoothly pass through the center point position of the X-shaped connecting groove 442 until the latch 45 enters the left straight section 441 along the X-shaped connecting groove 442. Then, the latch 45 moves upward along the left straight section 441. At this time, the clamping rod 43 drives the first injection molded part to flip 180 degrees.

[0051] Similarly, when the mold is opened for the second time, the latch 45 returns from the left straight section 441 to the inside of the straight section 441 through the X-shaped connecting groove 442 .

[0052] like Figure 10 As shown, in the high-efficiency eyeshadow box injection mold described in this embodiment, in some embodiments, the lower end of the flip seat 41 is provided with a mounting boss 411; the upper end of the flip seat 41 is provided with two limit rods 412 extending vertically downward; the lower ends of the limit rods 412 are provided with a stop platform 413; the flip slider 42 is slidably mounted on the two limit rods 412; and the return spring 46 is connected between the mounting boss 411 and the flip slider 42. In this embodiment, the mounting boss 411 is provided to facilitate the installation of the return spring 46, the limit rods 412 are provided to provide guidance and limit for the flip slider 42, and the stop platform 413 is provided to prevent the flip slider 42 from sliding downward and abutting against the stop platform 413. As the movable mold mechanism moves further downward, the elastic card 372 and the flip slider 42 generate relative motion, thereby automatically disengaging the elastic card 372 from the card slot 421.

[0053] like Figures 1 to 3 、 Figures 7 to 9 As shown, in some embodiments of the high-efficiency eyeshadow box injection mold described in this embodiment, the movable mold mechanism further includes a lifting seat 38; a guide rod 381 is provided at the bottom of the lifting seat 38; the guide rod 381 movably extends through the bottom of the mold support 1; the movable mold base 31 is located on the top of the lifting seat 38; and the claw assembly 37 is fixed to the lifting seat 38. In this embodiment, the lifting seat 38 is provided to facilitate the installation of the movable mold mechanism. By providing the guide rod 381, the guide rod 381 is fixedly mounted to the external press, thereby ensuring greater stability of the movable mold mechanism during its upward and downward movement.

[0054] like Figures 1 to 3 、 Figures 7 to 9 As shown, in the high-efficiency eye shadow box injection mold described in this embodiment, in some embodiments, the movable mold mechanism also includes an ejector plate 39 arranged below the lifting seat 38, and the four corner positions of the top surface of the ejector plate 39 are respectively provided with ejector rods 391 extending vertically upward; the ejector rods 391 move upward in sequence to pass through the lifting seat 38, the movable mold seat 31 and the third mold core 32; each ejector rod 391 is provided with a fourth spring 392; the two ends of the fourth spring 392 are respectively in contact with the lifting seat 38 and the ejector plate 39.

[0055] Specifically, during the second mold opening, as the lifting seat 38 moves downward, the ejector plate 39 contacts the bottom plate 12, causing relative movement between the ejector plate 39 and the lifting seat 38, the fourth spring 392 is compressed, and the ejector rod 391 moves upward relative to the third mold core 32, thereby ejecting the formed two-color eye shadow box and realizing the automatic unloading process.

[0056] like Figure 2 and Figure 3As shown, in some embodiments of the high-efficiency eyeshadow box injection mold described in this embodiment, cooling water channels 5 are provided in both the fixed mold base 21 and the movable mold base 31. By providing the cooling water channels 5, coolant is introduced into the cooling water channels 5 during the molding process of the first and second injection molded parts, thereby accelerating the cooling time of the injection molding material.

[0057] The above description is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A high-efficiency eyeshadow box injection mold for continuous production, characterized in that: It includes a mold support, a fixed mold mechanism located on the top of the mold support, a movable mold mechanism located at the bottom of the mold support, and two turning mechanisms symmetrically located on both sides of the mold support. The fixed mold mechanism includes a fixed mold base and a first mold core and a second mold core slidably arranged on the fixed mold base; the movable mold mechanism includes a movable mold base and a third mold core and a fourth mold core slidably arranged on the movable mold base; both ends of the movable mold base are provided with a claw group; Each flip mechanism includes a flip seat, a flip slider slidably mounted on the flip seat, a clamping rod rotatably mounted on the flip slider and having a cavity at one end, a driving groove mounted on the flip seat, and a latch elastically mounted on the other end of the clamping rod; the latch movably engages in the driving groove; a return spring is provided between the flip slider and the lower end of the flip seat; and slots are provided on both sides of the flip slider for engaging with the claw assembly. When the fixed mold mechanism and the movable mold mechanism are closed for the first time, the first mold core, the second mold core, the third mold core, the fourth mold core, the movable mold base and the two mold cavities are combined to form a first mold cavity, and the claw group is snap-fitted with the clamping groove; a first injection molded part is formed in the first mold cavity, and the first injection molded part includes a fixing ear formed in the mold cavity; When the fixed mold mechanism and the movable mold mechanism are closed for the second time, the first mold core, the second mold core, the first injection molded part and the fixed mold base are combined to form a second mold cavity; and the second injection molded part is formed in the second mold cavity; When the fixed mold mechanism and the movable mold mechanism open the mold for the first time, the two clamping rods drive the first injection molded part to flip 180 degrees under the cooperation of the bayonet pin and the driving groove; A first spring is provided between the first mold core and the second mold core; a second spring having a stiffness greater than that of the first spring is provided between the second mold core and the fixed mold base; The two ends of the bottom of the third mold core are connected to the first limit blocks; two L-shaped second limit blocks are slidably provided in the movable mold base; one end of the two second limit blocks contacts and cooperates with the inclined surface of the fourth mold core; the lower ends of the two first limit blocks contact and cooperate with the inclined surfaces of the other ends of the two second limit blocks in a one-to-one correspondence; a third spring is connected between the two second limit blocks; the stiffness of the third spring is greater than the stiffness of the first spring and less than the stiffness of the second spring.

2. The high-efficiency eyeshadow box injection mold for continuous production according to claim 1, characterized in that: Each clamping claw group includes a clamping claw arm and an elastic card; one end of the clamping claw arm is connected to the movable mold base, and the elastic card is arranged on the other end of the clamping claw arm.

3. The high-efficiency eyeshadow box injection mold for continuous production according to claim 1, characterized in that: The driving groove includes an X-shaped connecting groove and two vertically parallel straight sections; the two upper ends and two lower ends of the X-shaped connecting groove are respectively connected to the two straight sections, and the two lower ends of the X-shaped connecting groove are respectively provided with blocking steps at the intersection with the straight sections; the straight sections are provided with a first transition step above the blocking step; the two upper ends of the X-shaped connecting groove are respectively provided with a second transition step; the latch is diamond-shaped.

4. The high-efficiency eyeshadow box injection mold for continuous production according to claim 1, characterized in that: The lower end of the flip seat is provided with a mounting boss; the upper end of the flip seat is provided with two limit rods extending vertically downward; the lower end of the limit rod is provided with a stop platform; the flip slider is slidably sleeved on the two limit rods; and the reset spring is connected between the mounting boss and the flip slider.

5. The high-efficiency eyeshadow box injection mold for continuous production according to claim 1, characterized in that: The movable mold mechanism also includes a lifting seat; a guide rod is provided at the bottom of the lifting seat; the guide rod movably passes through the bottom of the mold support; the movable mold seat is provided at the top of the lifting seat; and the claw group is fixed on the lifting seat.

6. The high-efficiency eyeshadow box injection mold for continuous production according to claim 5, characterized in that: The movable mold mechanism also includes an ejector plate arranged below the lifting seat, and the four corner positions of the top surface of the ejector plate are respectively provided with ejector rods extending vertically upward; the ejector rods move upward in sequence through the lifting seat, the movable mold seat and the third mold core; each ejector rod is provided with a fourth spring; the two ends of the fourth spring are respectively in contact with the lifting seat and the ejector plate.

7. The high-efficiency eyeshadow box injection mold for continuous production according to claim 1, characterized in that: Cooling water channels are provided in both the fixed die base and the movable die base.

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