A two-color injection molding mechanism

Abstract

The application discloses a double-color injection mold mechanism and relates to the technical field of double-color injection molding, which comprises a bearing body, a fixed half mold, a linkage tooth rod, the upper surface of the bearing body is rotationally connected with an upper linkage body, the lower surface of the bearing body is rotationally connected with a bearing seat, the surface of the bearing body is fixedly connected with a movable half mold, the surface of the upper linkage body is fixedly connected with an oil cylinder, the output end of the oil cylinder is fixedly connected with a rack, the surface of the bearing body is fixedly connected with a linkage gear, the linkage gear is meshedly connected with the rack, the surface of the fixed half mold is provided with a limiting device, the limiting device comprises a limiting frame, the inner wall of the limiting frame is rotationally connected with a first limiting block, and the surface of the first limiting block is rotationally connected with a screw rod. The double-color injection mold mechanism solves the problem that the movable half mold and the fixed half mold are prone to moving and it is inconvenient for workers to smear the demolding agent into the movable half mold and the fixed half mold when the demolding agent is smeared.

Description

Technical Field

[0001] This invention relates to the field of two-color injection molding technology, specifically a two-color injection molding mechanism. Background Technology

[0002] Two-color injection molding is an injection molding process, also known as two-color molding or two-color injection molding. It uses two different colors or materials of plastic to inject them together to form a finished product with two colors or material properties. This technology is often used to produce plastic products with two-color appearance or two-color function, such as two-color handles, two-color buttons, etc.

[0003] The aforementioned and existing related technologies often have the following drawbacks: When performing two-color injection molding, a release agent is first applied to the moving half mold and the fixed half mold to facilitate demolding. The first color is then injected into the moving half mold and the fixed half mold on one side. Subsequently, the carrier drives the moving half mold to rotate, and the second color is injected into the moving half mold and the fixed half mold on the other side to complete the two-color injection molding. Because the moving half mold and the fixed half mold are easy to move when applying the release agent, it is inconvenient for the workers to apply the release agent into the moving half mold and the fixed half mold.

[0004] Therefore, we propose a two-color injection molding mechanism. Summary of the Invention

[0005] The purpose of this invention is to provide a two-color injection molding mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a two-color injection molding mechanism, comprising a carrier, a fixed half-mold, and a linkage rack. An upper linkage body is rotatably connected to the upper surface of the carrier, a carrier seat is rotatably connected to the lower surface of the carrier, a movable half-mold is fixedly connected to the surface of the carrier, a hydraulic cylinder is fixedly connected to the surface of the upper linkage body, a rack is fixedly connected to the output end of the hydraulic cylinder, a linkage gear is fixedly connected to the surface of the carrier, and the linkage gear meshes with the rack. A limiting device is provided on the surface of the fixed half-mold, the limiting device comprising a limiting frame, a first limiting block is rotatably connected to the inner wall of the limiting frame, a screw is rotatably connected to the surface of the first limiting block, a second limiting block is threaded to the arc surface of the screw, a handle is fixedly connected to the other end of the screw, a fixing pin is fixedly connected to the surface of the second limiting block, and a fixing groove is formed on the surface of the movable half-mold, the size of the fixing groove being adapted to the size of the fixing pin.

[0007] The aforementioned components achieve the following effect: When performing two-color injection molding, the linkage gear pulls open the fixed half mold, rotates the first limiting block on the limiting frame, and moves the second limiting block by turning the screw through the handle according to the position of the fixing groove. This moves the fixing pin to the appropriate position and inserts it into the fixing groove. As the first limiting block rotates, it rotates to 90 degrees, fixing and limiting the position of the moving half mold and the fixed half mold, making it convenient for workers to apply release agent to the moving half mold. When it is not necessary to limit the moving half mold and the fixed half mold, the first limiting block is rotated back to its original position. Then, the linkage gear pulls the fixed half mold to move, and the moving half mold and the fixed half mold close. The first color is injected into the moving half mold and the fixed half mold on one side. The linkage gear pulls the fixed half mold to move again to open the mold, and the hydraulic cylinder drives the rack to move. The rack pulls the linkage gear to rotate, rotating the carrier 180 degrees. The linkage gear pulls the fixed half mold to close again, and the second color is injected into the moving half mold and the fixed half mold on the other side, completing the two-color injection molding.

[0008] Preferably, the surface of the limiting frame is fixedly connected to an adapter block, the surface of the adapter block is rotatably connected to an L-shaped insert rod, the surface of the first limiting block is provided with a rectangular groove, the surface of the L-shaped insert rod is fixedly connected to a pull ring, and the size of the L-shaped insert rod is adapted to the size of the rectangular groove.

[0009] The above components achieve the following effect: the L-shaped insert will be inserted into the rectangular groove in the first limiting block, limiting the first limiting block and the fixing pin. The L-shaped insert will be pulled along the adapter block by the pull ring, and the L-shaped insert will fall out of the rectangular groove.

[0010] Preferably, a fixing plate is fixedly connected to the surface of the limiting frame, and a magnet is fixedly connected to the surface of the fixing plate.

[0011] The effect achieved by the above components is that the magnet on the fixed plate will attract the first limiting block and limit its movement, preventing the first limiting block from rotating arbitrarily and affecting the operation of the fixed half mold.

[0012] Preferably, a telescopic rod is fixedly connected to the surface of the first limiting block, and the other end of the telescopic rod is fixedly connected to the second limiting block.

[0013] The effect achieved by the above components is that when the screw rotates, the telescopic rod extends and limits the second limiting block, preventing the second limiting block from rotating with the screw.

[0014] Preferably, the surface of the movable half mold is provided with a coating device, the coating device including a U-shaped frame, the U-shaped frame being detachably installed with the movable half mold, a sliding support rod being slidably connected to the surface of the U-shaped frame, a sliding rod being slidably connected to the inner wall of the sliding support rod, a circular plate being fixedly connected to one end of the sliding rod, a rectangular plate being fixedly connected to the other end of the sliding rod, a sponge block being fixedly connected to the surface of the rectangular plate, and a lead screw being threadedly connected to the inner wall of the U-shaped frame, one end of the lead screw abutting against the surface of the movable half mold.

[0015] The effect achieved by the above components is as follows: after applying the release agent to the moving half mold and the fixed half mold, the U-shaped frame is placed on the moving half mold. Then, the screw is rotated to fix the U-shaped frame on the moving half mold. The sliding support rod is pulled along the U-shaped frame by the pull rod. The slide rod on the slide support rod will move, and the sponge block at one end of the slide rod will spread the release agent in the moving half mold evenly. The U-shaped frame can also be installed on the fixed half mold to apply the release agent.

[0016] Preferably, a spring is fitted onto the arc surface of the slide rod, one end of the spring is fixedly connected to the circular plate, and the other end of the spring is fixedly connected to the sliding support rod.

[0017] The effect achieved by the above components is that the spring extends and contracts with the uneven grooves in the moving half mold, causing the slide bar and rectangular plate to slide in the sliding support rod, so that the sponge block can apply the release agent to different grooves.

[0018] Preferably, a tie rod is fixedly connected to the surface of the sliding support rod.

[0019] The above components achieve the following effects: the pull rod facilitates the movement of the sliding support rod by the staff, and makes it convenient to apply the release agent.

[0020] Preferably, the lower surface of the fixed half mold is provided with an auxiliary device, the auxiliary device including a connecting plate, the connecting plate being fixedly connected to the fixed half mold, a connecting rod being fixedly connected to the surface of the connecting plate, an inclined plate being rotatably connected to the arc surface of the connecting rod, an airbag being fixedly connected to the surface of the inclined plate, a torsion spring being sleeved on the arc surface of the connecting rod, one end of the torsion spring being fixedly connected to the connecting plate, and the other end of the torsion spring being fixedly connected to the inclined plate.

[0021] The aforementioned components achieve the following effect: During demolding, the linkage rack drives the fixed half mold to move, and the two-color injection molded product falls from the fixed half mold and the moving half mold. After falling, it will land on the inclined plate. The air cushion on the inclined plate will buffer the impact of the fall and prevent the product from being directly damaged by the fall. After the product falls onto the inclined plate, the torsion spring will be compressed under force, and the inclined plate will tilt along the connecting rod. The product on the inclined plate will slide down with the tilt of the inclined plate. Then the torsion spring will contract, and the inclined plate will automatically return to its original position.

[0022] Preferably, two blocks are fixedly connected to the surface of the connecting plate, and a locking rod is fixedly connected to the surface of the inclined plate.

[0023] The effect achieved by the above components is that the lever on the inclined plate will move as the inclined plate tilts, and the stop on the connecting plate will limit the lever, thereby limiting the angle of inclination of the inclined plate.

[0024] Preferably, a guide plate is fixedly connected to the surface of the inclined plate.

[0025] The effect achieved by the above components is that the guide plate will limit the falling finished product, so that the finished product slides down in a central position.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The present invention, by setting a limiting device, when applying release agent to the moving half mold and the fixed half mold, drives the fixed pin on the second limiting block to move by rotating the first limiting block on the limiting frame, inserting the fixed pin into the fixed groove, thereby limiting the moving half mold and the fixed half mold, making it convenient for workers to apply release agent to the moving half mold and the fixed half mold.

[0028] 2. The present invention, by setting up an application device, allows for the application of release agent to the moving half mold and the fixed half mold when applying release agent. A sliding support rod that can move on the U-shaped frame is used, and a sponge block at one end of the sliding rod applies the release agent to the moving half mold and the fixed half mold, making it convenient for workers to apply the release agent.

[0029] 3. By setting up an auxiliary device, the injection molded product will fall onto the inclined plate during demolding. The air cushion will buffer the impact of the product falling. Then the inclined plate tilts and the product will slide down automatically, avoiding damage to the product caused by the impact of the product falling directly, thus affecting the yield rate. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the fixed half-mode operation structure in this invention;

[0032] Figure 3 In this invention Figure 1 A schematic diagram of the anatomical structure;

[0033] Figure 4 This is a schematic diagram of the limiting device in this invention;

[0034] Figure 5 In this invention Figure 4 A schematic diagram of a partial structure;

[0035] Figure 6 In this invention Figure 1 A magnified structural diagram at point A;

[0036] Figure 7 This is a schematic diagram of the application device in this invention;

[0037] Figure 8 In this invention Figure 7 A schematic diagram of a partial structure;

[0038] Figure 9 This is a schematic diagram of the auxiliary device in this invention;

[0039] Figure 10 In this invention Figure 9 A schematic diagram of a partial structure;

[0040] Figure 11 In this invention Figure 10 Enlarged view of point B.

[0041] In the diagram: 1. Support body; 2. Support seat; 3. Upper linkage body; 4. Fixed half mold; 5. Moving half mold; 6. Rack; 7. Limiting device; 701. Limiting frame; 702. First limiting block; 703. Screw; 704. Second limiting block; 705. Fixing pin; 706. Handle; 707. Telescopic rod; 708. Rectangular groove; 709. Fixing plate; 710. Magnet; 711. Adapter block; 712. L-shaped insert; 713. Pull ring; 71 4. Fixing groove; 8. Applying device; 81. U-shaped frame; 82. Lead screw; 83. Round plate; 84. Sliding support rod; 85. Tie rod; 86. Rectangular plate; 87. Slide rod; 88. Spring; 89. Sponge block; 9. Auxiliary device; 91. Connecting plate; 92. Inclined plate; 93. Airbag cushion; 94. Guide plate; 95. Torsion spring; 96. Connecting rod; 97. Stop block; 98. Locking rod; 10. Hydraulic cylinder; 11. Linkage rack; 12. Linkage gear. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1-3This invention provides a technical solution: a two-color injection molding mechanism, including a carrier body 1, a fixed half mold 4, and a linkage rack 11. An upper linkage body 3 is rotatably connected to the upper surface of the carrier body 1, a carrier seat 2 is rotatably connected to the lower surface of the carrier body 1, a movable half mold 5 is fixedly connected to the surface of the carrier body 1, a hydraulic cylinder 10 is fixedly connected to the surface of the upper linkage body 3, a rack 6 is fixedly connected to the output end of the hydraulic cylinder 10, a linkage gear 12 is fixedly connected to the surface of the carrier body 1, and the linkage gear 12 meshes with the rack 6. A limiting device 7 is provided on the surface of the fixed half mold 4, a coating device 8 is provided on the surface of the movable half mold 5, and an auxiliary device 9 is provided on the lower surface of the fixed half mold 4.

[0044] The following section will explain the specific settings and functions of its limiting device 7, coating device 8, and auxiliary device 9.

[0045] like Figure 4 and Figure 5 as well as Figure 6As shown, the limiting device 7 includes a limiting frame 701. A first limiting block 702 is rotatably connected to the inner wall of the limiting frame 701. A screw 703 is rotatably connected to the surface of the first limiting block 702. A second limiting block 704 is threadedly connected to the arc surface of the screw 703. A handle 706 is fixedly connected to the other end of the screw 703. A fixing pin 705 is fixedly connected to the surface of the second limiting block 704. A fixing groove 714 is formed on the surface of the movable half mold 5. The size of the fixing groove 714 matches the size of the fixing pin 705. When injection molding two-color injection molded products, the linkage gear 11 drives the fixed half mold 4 to open, rotates the first limiting block 702 on the limiting frame 701, and according to the position of the fixing groove 714, the handle 706 moves the movable half mold 5. 6. Rotating screw 703 drives the second limiting block 704 to move, thereby driving the fixing pin 705 to move, moving the positioning pin to the appropriate position, and inserting the positioning pin into the fixing groove 714. As the first limiting block 702 rotates, it will rotate to 90 degrees, fixing and limiting the position of the moving half mold 5 and the fixed half mold 4, making it convenient for the staff to apply the release agent to the moving half mold 5. When it is not necessary to limit the moving half mold 5 and the fixed half mold 4, the first limiting block 702 is rotated back to its original position. Then, the linkage rack 11 drives the fixed half mold 4 to move, and the moving half mold 5 and the fixed half mold 4 close. The first color is injected into the moving half mold 5 and the fixed half mold 4 on one side. The linkage rack 11 drives the fixed half mold 4 to move again to open the mold, and the hydraulic cylinder 10 drives the rack 6 to move. When the rack 6 moves, it pulls the linkage gear 12 to rotate, causing the carrier 1180 degrees to rotate. The linkage rack 11 then drives the fixed half mold 4 to close, and the second color is injected into the moving half mold 5 and the fixed half mold 4 on the other side, completing the two-color injection molding. The surface of the limiting frame 701 is fixedly connected to the adapter block 711, and the surface of the adapter block 711 is rotatably connected to the L-shaped insert 712. The surface of the first limiting block 702 has a rectangular groove 708, and the surface of the L-shaped insert 712 is fixedly connected to the pull ring 713. The size of the L-shaped insert 712 is adapted to the size of the rectangular groove 708. The L-shaped insert 712 will be inserted into the rectangular groove 708 in the first limiting block 702, limiting the first limiting block 702 and the fixing pin 705. The pull ring 713 will then be used to lock the first limiting block 702 and the fixing pin 705. 13. Pull the L-shaped insert 712 to rotate along the adapter block 711. The L-shaped insert 712 will fall out of the rectangular slot 708. A fixing plate 709 is fixedly connected to the surface of the limiting frame 701. A magnet 710 is fixedly connected to the surface of the fixing plate 709. The magnet 710 on the fixing plate 709 will attract the first limiting block 702 and limit it to prevent the first limiting block 702 from rotating at will and affecting the operation of the fixed half mold 4. A telescopic rod 707 is fixedly connected to the surface of the first limiting block 702. The other end of the telescopic rod 707 is fixedly connected to the second limiting block 704. When the screw 703 rotates, the telescopic rod 707 extends and limits the second limiting block 704 to prevent the second limiting block 704 from rotating with the screw 703.

[0046] like Figure 7 and Figure 8As shown, the coating device 8 includes a U-shaped frame 81, which is detachably mounted to the movable half-mold 5. A sliding support rod 84 is slidably connected to the surface of the U-shaped frame 81, and a sliding rod 87 is slidably connected to the inner wall of the sliding support rod 84. A circular plate 83 is fixedly connected to one end of the sliding rod 87, and a rectangular plate 86 is fixedly connected to the other end of the sliding rod 87. A sponge block 89 is fixedly connected to the surface of the rectangular plate 86. A lead screw 82 is threadedly connected to the inner wall of the U-shaped frame 81, and one end of the lead screw 82 abuts against the surface of the movable half-mold 5. After the release agent is applied to the movable half-mold 5 and the fixed half-mold 4, the U-shaped frame 81 is fitted onto the movable half-mold 5. Then, the lead screw 82 is rotated to fix the U-shaped frame 81 onto the movable half-mold 5. The sliding support rod 84 is pulled along the U-shaped frame 81 by the pull rod 85. The slide bar 87 on the sliding support rod 84 will move, and the sponge block 89 at one end of the slide bar 87 will spread the release agent evenly in the moving half mold 5. The U-shaped frame 81 can also be installed on the fixed half mold 4 to apply the release agent. The arc surface of the slide bar 87 is fitted with a spring 88. One end of the spring 88 is fixedly connected to the circular plate 83, and the other end of the spring 88 is fixedly connected to the sliding support rod 84. The spring 88 extends and contracts with the uneven grooves in the moving half mold 5, causing the slide bar 87 and the rectangular plate 86 to slide in the sliding support rod 84, so that the sponge block 89 can apply the release agent to different grooves. The surface of the sliding support rod 84 is fixedly connected with a pull rod 85, which makes it convenient for the staff to operate the sliding support rod 84 to move and facilitate the application of the release agent.

[0047] like Figure 9 and Figure 10 as well as Figure 11 As shown, the auxiliary device 9 includes a connecting plate 91, which is fixedly connected to the fixed half mold 4. A connecting rod 96 is fixedly connected to the surface of the connecting plate 91. An inclined plate 92 is rotatably connected to the arc surface of the connecting rod 96. An air cushion 93 is fixedly connected to the surface of the inclined plate 92. A torsion spring 95 is sleeved on the arc surface of the connecting rod 96. One end of the torsion spring 95 is fixedly connected to the connecting plate 91, and the other end of the torsion spring 95 is fixedly connected to the inclined plate 92. During demolding, the linkage rack 11 drives the fixed half mold 4 to move, and the two-color injection molded product falls from the fixed half mold 4 and the moving half mold 5. After falling, it will land on the inclined plate 92. The air cushion 93 on the inclined plate 92 will buffer the impact of the fall and prevent the product from falling directly and being damaged. When the finished product falls onto the inclined plate 92, the torsion spring 95 will contract under force, and the inclined plate 92 will tilt along the connecting rod 96. The finished product on the inclined plate 92 will slide down as the inclined plate 92 tilts. Then the torsion spring 95 will contract, and the inclined plate 92 will automatically return to its original position. Two blocks 97 are fixedly connected to the surface of the connecting plate 91, and a locking rod 98 is fixedly connected to the surface of the inclined plate 92. The locking rod 98 on the inclined plate 92 will move as the inclined plate 92 tilts. The blocks 97 on the connecting plate 91 will limit the locking rod 98, thereby limiting the tilt angle of the inclined plate 92. A guide plate 94 is fixedly connected to the surface of the inclined plate 92. The guide plate 94 will limit the falling finished product, causing the finished product to slide down in a central position.

[0048] Working principle: When injection molding two-color products, the linkage rack 11 drives the fixed half mold 4 to open, and rotates the first limit block 702 on the limit frame 701. According to the position of the fixing groove 714, the screw 703 is rotated by the handle 706 to drive the second limit block 704 to move, thereby driving the fixing pin 705 to move. When the screw 703 rotates, the telescopic rod 707 extends and limits the second limit block 704, preventing the second limit block 704 from rotating with the screw 703. This moves the positioning pin to the appropriate position, thus positioning the pin. Inserted into the fixing slot 714, as the first limiting block 702 rotates, it will rotate to 90 degrees, and the L-shaped insert 712 will be inserted into the rectangular slot 708 in the first limiting block 702, limiting the first limiting block 702 and the fixing pin 705, and fixing the position of the moving half mold 5 and the fixed half mold 4, making it convenient for the operator to apply the release agent to the moving half mold 5. When it is not necessary to limit the moving half mold 5 and the fixed half mold 4, the L-shaped insert 712 can be pulled along the adapter block 711 by the pull ring 713, and the L-shaped insert 712 will move from the rectangular slot 708. If the first limiting block 702 detaches from the fixed plate 709, it will rotate and reset. The magnet 710 on the fixed plate 709 will attract the first limiting block 702 and limit its rotation to prevent it from affecting the operation of the fixed half mold 4. Then, the linkage rack 11 will drive the fixed half mold 4 to move, and the moving half mold 5 will close with the fixed half mold 4. The first color will be injected into the moving half mold 5 and the fixed half mold 4 on one side. The linkage rack 11 will drive the fixed half mold 4 to move again to open the mold. The start cylinder 10 will drive the rack 6 to move, and the rack 6 will pull the linkage gear 12 to rotate, thus moving the carrier 118. Rotating 0 degrees, the linkage gear 11 drives the fixed half mold 4 to close again, and the second color is injected into the moving half mold 5 and the fixed half mold 4 on the other side to complete the two-color injection molding. By setting the limiting device 7, when applying the release agent to the moving half mold 5 and the fixed half mold 4, the first limiting block 702 on the limiting frame 701 is rotated to drive the fixing pin 705 on the second limiting block 704 to move, and the fixing pin 705 is inserted into the fixing groove 714 to limit the moving half mold 5 and the fixed half mold 4, so that the workers can apply the release agent to the moving half mold 5 and the fixed half mold 4.

[0049] After applying the release agent to the movable half mold 5 and the fixed half mold 4, the U-shaped frame 81 is fitted onto the movable half mold 5. Then, the screw 82 is rotated to fix the U-shaped frame 81 onto the movable half mold 5. The sliding support rod 84 is moved along the U-shaped frame 81 by the pull rod 85. The pull rod 85 allows the operator to easily control the movement of the sliding support rod 84, facilitating the application of the release agent. The slide rod 87 on the sliding support rod 84 will move, and the sponge block 89 at one end of the slide rod 87 will evenly spread the release agent in the movable half mold 5. The spring 88 moves along the uneven surface of the movable half mold 5. The expansion and contraction of the grooves cause the slide rod 87 and the rectangular plate 86 to slide in the sliding support rod 84, allowing the sponge block 89 to apply the release agent to different grooves. The U-shaped frame 81 can also be installed on the fixed half mold 4 to apply the release agent. By setting the application device 8, when applying the release agent to the moving half mold 5 and the fixed half mold 4, the sponge block 89 at one end of the slide rod 87 applies the release agent to the moving half mold 5 and the fixed half mold 4 through the sliding support rod 84, which can move on the U-shaped frame 81, making it convenient for workers to apply the release agent.

[0050] During demolding, the linkage rack 11 moves the fixed half mold 4, and the two-color injection molded product falls from the fixed half mold 4 and the moving half mold 5. After falling, it will land on the inclined plate 92. The air cushion 93 on the inclined plate 92 will buffer the impact of the fall and prevent the product from being directly damaged. After the product falls onto the inclined plate 92, the torsion spring 95 will be compressed under force, and the inclined plate 92 will tilt along the connecting rod 96. The locking rod 98 on the inclined plate 92 will move with the tilt of the inclined plate 92. The stop 97 on the connecting plate 91 will limit the locking rod 98, so that the inclined plate 92 tilts. The inclined plate 92 is used to limit the angle of the product. The finished product on the inclined plate 92 will slide down as the inclined plate 92 tilts. The guide plate 94 will limit the falling finished product, so that the finished product slides down in the center position. Then the torsion spring 95 retracts and the inclined plate 92 automatically resets. By setting the auxiliary device 9, when demolding, the falling injection molded finished product will fall onto the inclined plate 92. The air cushion 93 will buffer the impact of the falling finished product. Then the inclined plate 92 tilts and the finished product slides down automatically, avoiding the impact of the finished product falling directly and causing damage to the finished product, thus affecting the yield rate of the finished product.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-color injection molding mechanism, comprising a carrier (1), a fixed half mold (4), and a linkage rack (11), wherein an upper linkage body (3) is rotatably connected to the upper surface of the carrier (1), a carrier seat (2) is rotatably connected to the lower surface of the carrier (1), a movable half mold (5) is fixedly connected to the surface of the carrier (1), a hydraulic cylinder (10) is fixedly connected to the surface of the upper linkage body (3), a rack (6) is fixedly connected to the output end of the hydraulic cylinder (10), a linkage gear (12) is fixedly connected to the surface of the carrier (1), the linkage gear (12) meshes with the rack (6), and a limiting device (7) is provided on the surface of the fixed half mold (4), characterized in that: The limiting device (7) includes a limiting frame (701), a first limiting block (702) is rotatably connected to the inner wall of the limiting frame (701), a screw (703) is rotatably connected to the surface of the first limiting block (702), a second limiting block (704) is threadedly connected to the arc surface of the screw (703), a handle (706) is fixedly connected to the other end of the screw (703), a fixing pin (705) is fixedly connected to the surface of the second limiting block (704), and a fixing groove (714) is opened on the surface of the moving half mold (5), the size of the fixing groove (714) is adapted to the size of the fixing pin (705).

2. The two-color injection molding mechanism according to claim 1, characterized in that: The surface of the limiting frame (701) is fixedly connected to the adapter block (711), and the surface of the adapter block (711) is rotatably connected to the L-shaped insert rod (712). The surface of the first limiting block (702) is provided with a rectangular groove (708), and the surface of the L-shaped insert rod (712) is fixedly connected to the pull ring (713). The size of the L-shaped insert rod (712) is adapted to the size of the rectangular groove (708).

3. The two-color injection molding mechanism according to claim 1, characterized in that: A fixing plate (709) is fixedly connected to the surface of the limiting frame (701), and a magnet (710) is fixedly connected to the surface of the fixing plate (709).

4. A two-color injection molding mechanism according to claim 1, characterized in that: A telescopic rod (707) is fixedly connected to the surface of the first limiting block (702), and the other end of the telescopic rod (707) is fixedly connected to the second limiting block (704).

5. A two-color injection molding mechanism according to claim 1, characterized in that: The surface of the movable half mold (5) is provided with a coating device (8). The coating device (8) includes a U-shaped frame (81). The U-shaped frame (81) and the movable half mold (5) are detachably installed. A sliding support rod (84) is slidably connected to the surface of the U-shaped frame (81). A slide rod (87) is slidably connected to the inner wall of the sliding support rod (84). A circular plate (83) is fixedly connected to one end of the slide rod (87). A rectangular plate (86) is fixedly connected to the other end of the slide rod (87). A sponge block (89) is fixedly connected to the surface of the rectangular plate (86). A lead screw (82) is threadedly connected to the inner wall of the U-shaped frame (81). One end of the lead screw (82) abuts against the surface of the movable half mold (5).

6. A two-color injection molding mechanism according to claim 5, characterized in that: The arc surface of the slide rod (87) is fitted with a spring (88), one end of the spring (88) is fixedly connected to the circular plate (83), and the other end of the spring (88) is fixedly connected to the sliding support rod (84).

7. A two-color injection molding mechanism according to claim 5, characterized in that: A tie rod (85) is fixedly connected to the surface of the sliding support rod (84).

8. A two-color injection molding mechanism according to claim 1, characterized in that: The lower surface of the fixed half mold (4) is provided with an auxiliary device (9). The auxiliary device (9) includes a connecting plate (91). The connecting plate (91) is fixedly connected to the fixed half mold (4). A connecting rod (96) is fixedly connected to the surface of the connecting plate (91). An inclined plate (92) is rotatably connected to the arc surface of the connecting rod (96). An airbag cushion (93) is fixedly connected to the surface of the inclined plate (92). A torsion spring (95) is sleeved on the arc surface of the connecting rod (96). One end of the torsion spring (95) is fixedly connected to the connecting plate (91), and the other end of the torsion spring (95) is fixedly connected to the inclined plate (92).

9. A two-color injection molding mechanism according to claim 8, characterized in that: Two stops (97) are fixedly connected to the surface of the connecting plate (91), and a clamp (98) is fixedly connected to the surface of the inclined plate (92).

10. A two-color injection molding mechanism according to claim 8, characterized in that: The guide plate (94) is fixedly connected to the surface of the inclined plate (92).

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