Disc type multicolor shoe sole injection molding machine

Abstract

The utility model relates to a disc type shoe sole injection molding machine, in particular to a disc type multicolor shoe sole injection molding machine, which comprises a turntable, a molding die assembly and an injection mechanism, the turntable is arranged in an intermittent rotation manner, the turntable is provided with an injection station and a blanking station along the circumferential direction, and the molding die assembly is arranged along the circumferential direction of the turntable and is arranged on the turntable. The forming mold assembly comprises a replaceable shoe tree, a mold frame and bottom molds, the shoe tree, the mold frame and the bottom molds jointly form an injection forming cavity, the injection mechanism is arranged on an injection station and comprises an injection head, the bottom molds are installed on an installation base, the installation base can be provided with at least two sets of bottom molds, and the bottom molds are provided with forming grooves used for containing materials. The mounting base is rotationally arranged on the moving frame, the moving frame is arranged below the rotating disc in a lifting mode, the mounting base rotates to change the forming groove facing the mold frame, multiple times of injection are convenient, and production continuity is good.

Description

Technical Field

[0001] This utility model relates to a disc-type shoe sole injection molding machine, and in particular to a disc-type multi-color shoe sole injection molding machine. Background Technology

[0002] Chinese utility patent CN217552948U discloses a disc injection molding machine for two-color high and low horizontal injection shoes. It is designed to achieve two-color molding of the sole by performing two injections using a main injection lifting assembly and a secondary injection assembly. Before the first injection, a dummy horizontal last is inserted into the last insertion slot of the pressing assembly. Before the second injection, the sprue is removed and the dummy horizontal last is taken out, and the real horizontal last is inserted. The last replacement is cumbersome and affects the continuity of production. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a disc-type multi-color shoe sole injection molding machine, wherein the mounting base rotates and changes the bottom mold used to form the injection molding cavity, thereby realizing multi-color molding of shoe soles.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This disc-type multi-color shoe sole injection molding machine includes a turntable, a molding die assembly, and an injection mechanism. The turntable rotates intermittently and has an injection station and a material unloading station along its circumference. The molding die assembly is arranged along the circumference of the turntable and is mounted on the turntable. The molding die assembly includes a replaceable shoe last, a mold frame, and a bottom mold. The shoe last, the mold frame, and the bottom mold together form an injection molding cavity. The injection mechanism is configured at the injection station and includes an injection head. The bottom mold is mounted on a mounting base, which can mount at least two sets of bottom molds. The bottom mold has a molding groove for accommodating materials. The mounting base is rotatably mounted on a movable frame, which is vertically mounted below the turntable.

[0005] In this design, the movable frame is lowered to leave space for the mounting base to rotate. The mounting base rotates to change its orientation towards the bottom mold of the mold frame, and injection can be performed again, resulting in good production continuity.

[0006] Preferably, the mounting base has an injection position and a molding position, the mounting base moves up and down between the injection position and the molding position, and the mounting base is in the injection position when the injection mechanism is working.

[0007] In this design, after the injection mechanism injects material into the molding groove of the bottom mold, the moving frame rises, and the shoe last, mold frame, and bottom mold together form the injection molding cavity. Multiple injections do not require adjustment of the injection head position.

[0008] Preferably, the mold frame is provided with a flow guide seat, the flow guide seat is provided with an injection hole for docking with the injection head and a material guide channel, the material inlet section of the material guide channel is connected to the injection hole, and the material outlet section of the material guide channel is inclined downward.

[0009] In this design, the general-purpose injection head injects horizontally, the feed section of the guide channel is horizontal, and the discharge section is tilted, changing the direction of the material output from the injection head so that the material falls accurately into the molding tank, and the corner can slow down the material.

[0010] Preferably, the mold frame is designed to open and close.

[0011] In this design, the mold frame is opened to allow the finished product to be removed.

[0012] Preferably, the mold frame includes a left mold and a right mold, one end of the left mold and one end of the right mold are hinged to the same point on the turntable, and the other end of the left mold and the other end of the right mold are both hinged to a push-pull arm, the push-pull arm is hinged to a swing block, and the swing block is oscillating on the turntable.

[0013] In this scheme, the swing block can drive the push-pull arm to push and pull the left and right molds, thereby realizing the opening and closing of the mold frame.

[0014] Preferably, the shoe last is fitted with a plug block, the shoe last is provided with a plug shaft, the plug block is provided with a plug hole corresponding to the plug shaft, the plug block extends with locking blocks on both sides, the shoe last is provided with locking grooves on both sides corresponding to the locking blocks, the plug block is fitted with a slot, the slot is provided on an adjustment seat, the adjustment seat is provided on the turntable, and the insertion port of the slot is oriented horizontally.

[0015] In this design, after the insert shaft is inserted into the insert hole, the insert block is rotated, and the locking block is engaged with the locking slot to complete the assembly of the shoe last and the insert block. The insert block is then inserted into the slot to complete the installation.

[0016] Preferably, the adjusting seat is adjusted on the base, and the base is disposed on the turntable.

[0017] In this design, the lifting and adjusting seat moves the shoe last to complete the adjustment of the shoe last.

[0018] Preferably, a vertical screw is rotatably mounted on the base, and a lifting block is threaded onto the vertical screw, the lifting block being connected to the adjusting seat.

[0019] In this design, rotating the vertical screw drives the lifting block to rise and fall, thus adjusting the shoe last. This adjustment is convenient.

[0020] Preferably, the movable frame is slidably mounted on the lifting guide rail, the lifting guide rail is mounted on the mounting frame, the mounting frame is connected to the turntable, and a lifting power source for driving the movable frame is provided below the mounting frame.

[0021] In this scheme, the lifting power source drives the moving parts to move up and down along the lifting guide rail.

[0022] Preferably, the mounting base has rotating shafts at both ends, the rotating shafts are connected to a cross handle, and the cross handle is rotatably mounted on the movable frame.

[0023] In this design, rotating the cross handle drives the mounting base to rotate, making switching convenient.

[0024] The beneficial effects of this utility model are as follows: after the injection mechanism injects material into the molding groove of the bottom mold, the moving frame rises, and the shoe last, mold frame, and bottom mold together form the injection molding cavity. After a period of time, the moving frame descends, the bottom mold separates from the mold frame, and the mounting base rotates to change its orientation towards the molding groove of the mold frame, allowing for injection again. Multiple injections are convenient, and production continuity is good. Therefore, this utility model has substantial features and progress compared with the prior art. Attached Figure Description

[0025] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a three-dimensional structural diagram of the molding die assembly in this utility model.

[0028] Figure 3 This is a three-dimensional structural diagram of the mold frame in this utility model.

[0029] Figure 4 This is a side view of the bottom mold of this utility model.

[0030] Figure 5 This is a three-dimensional structural diagram of the forming groove in this utility model.

[0031] Figure 6 This is a schematic diagram of the material guiding channel of the guide seat in this utility model.

[0032] Figure 7 This is a three-dimensional structural diagram of the movable frame in this utility model.

[0033] In the diagram: 1. Turntable; 2. Molding mold assembly; 3. Shoe last; 4. Mold frame; 5. Bottom mold; 6. Injection mechanism; 7. Mounting base; 8. Moving frame; 9. Left mold; 10. Right mold; 11. Push-pull arm; 12. Swing block; 13. Insert block; 14. Slot; 15. Adjustment seat; 16. Base; 17. Vertical screw; 18. Lifting block; 19. Lifting guide rail; 20. Rotary shaft; 21. Cross handle; 22. Flow guide seat; 23. Injection hole; 24. Material guide channel; 26. Mounting frame; 27. Lifting power source; 28. Molding groove. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0035] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0037] See appendix Figure 1-7This embodiment of the invention provides a disc-type multi-color shoe sole injection molding machine, comprising a turntable 1, a molding die assembly 2, and an injection mechanism 6. The turntable 1 is intermittently rotating and has an injection station and a material unloading station along its circumference. The molding die assembly 2 is arranged circumferentially on the turntable 1 and includes a replaceable shoe last 3, a mold frame 4, and a bottom mold 5. The shoe last 3, the mold frame 4, and the bottom mold 5 together form an injection molding cavity. The mold frame 4 is openable and closable and has a flow guide seat 22. The flow guide seat 22 has an injection hole 23 for connecting to the injection head and a material guide channel 24. The feeding section of the material guide channel 24 communicates with the injection hole 23, and the discharge section of the material guide channel 24 is inclined downward. The injection mechanism 6 is disposed at the injection station and includes an injection head. The bottom mold 5 is mounted on the mounting base 7, which can mount at least two sets of bottom molds 5. The bottom mold 5 is provided with a molding groove 28 for accommodating materials. The mounting base 7 is rotatably mounted on the movable frame 8, which is raised and lowered below the turntable 1. The mounting base 7 has an injection position and a molding position. The mounting base 7 moves between the injection position and the molding position. When the injection mechanism 6 is working, the mounting base 7 is in the injection position. The movable frame 8 is slidably mounted on the lifting guide rail 19, which is mounted on the mounting frame 26. The mounting frame 26 is connected to the turntable 1. A lifting power source 27 for driving the movable frame 8 is provided below the mounting frame 26. The mounting base 7 has rotating shafts 20 at both ends, which are connected to a cross handle 21. The cross handle 21 is rotatably mounted on the movable frame 8.

[0038] In this embodiment, after the shoe last 3 is fitted onto the shoe mold and installed in place, the mold frame 4 closes. The turntable 1 is activated, and the turntable 1 drives the molding mold assembly 2 to move towards the injection station. The injection mechanism 6 connects with the injection hole 23 of the guide seat 22 at the injection station, injecting the material into the molding groove 28 of the bottom mold 5. The moving frame 8 rises, causing the bottom mold 5, mold frame 4, and shoe last 3 to form the injection molding cavity. Then the turntable 1 continues to rotate. After a cooling period, the moving frame 8 descends at the unloading station, causing the bottom mold 5 to separate from the mold frame 4. The cross handle is rotated to change the orientation of the mounting seat 7 towards the mold frame 4. Then the turntable 1 returns to the injection station for a second injection. When it returns to the unloading station, the moving frame 8 descends, causing the bottom mold 5 to separate from the mold frame 4. The mold frame 4 is opened, and the finished product is taken out. After injection, the bottom mold 5 rises to form the injection molding cavity, and the same injection hole 23 can be used for both injections. There is no situation where pre-formed material blocks the injection hole 23; the material outlet channel of the injection head can also be designed, so the guide seat 22 is not needed. The guide seat 22 can be set on the moving frame 8, as long as the position is fixed during injection; for multi-colored shoe soles, multiple injections can be completed by the same injection mechanism 6, or they can be completed by the corresponding injection mechanisms 6 at multiple stations. The bottom mold 5 for station changing needs to be designed in the middle. In a single station, there can be one injection head or multiple interchangeable injection heads. The injection head moves radially along the turntable 1, which is a mature technology; the lifting power source 27 is a cylinder, and the lifting guide rail 19 is set at the four corners of the mounting frame 26; for multi-color requirements such as three colors and four colors, the number of bottom molds 5 can be increased and set circumferentially along the rotation axis of the mounting base 7. For two colors, they are the front and back sides; for three colors, they are the three sides of a triangular prism; for four colors, they are the four sides of a cube, and so on.

[0039] In other alternative implementations, injection can be performed after the injection molding cavity is formed. When making multi-colored soles, multiple injection ports should be designed or the height of the shoe last 3 should be adjusted to allow for injection space.

[0040] See appendix Figure 2-3 The mold frame 4 includes a left mold 9 and a right mold 10. One end of the left mold 9 and one end of the right mold 10 are hinged to the same point on the turntable 1. The other end of the left mold 9 and the other end of the right mold 10 are both hinged to a push-pull arm 11. The push-pull arm 11 is hinged to a swing block 12. The swing block 12 is oscillating on the turntable 1.

[0041] In this embodiment, the swing block 12 is driven to swing by the handle, which drives the push-pull arm 11 to push the left mold 9 and the right mold 10 closer together, thus completing the closure of the mold frame 4.

[0042] In other alternative implementations, the left mold 9 and the right mold 10 can be closed by a cylinder drive. There are various mold closing schemes, which are mature technologies.

[0043] See appendix Figure 2The shoe last 3 is fitted with a plug block 13. The shoe last 3 is provided with a plug shaft. The plug block 13 is provided with a plug hole corresponding to the plug shaft. The plug block 13 has a locking block extending from both sides. The shoe last 3 is provided with a locking groove corresponding to the locking block on both sides. The plug block 13 is fitted with a slot 14. The slot 14 is set on the adjustment seat 15. The adjustment seat 15 is set on the turntable 1. The plug opening of the slot 14 is set horizontally. A vertical screw 17 is rotatably set on the moving frame 8. The vertical screw 17 is threadedly fitted with a lifting block 18. The lifting block 18 is connected to the adjustment seat 15.

[0044] In this embodiment, during debugging, the insertion shaft of the shoe last 3 is inserted into the insertion hole of the insertion block 13, and the insertion block 13 is rotated to make the locking block engage with the locking slot. The locking block and the locking slot prevent the insertion shaft from disengaging from the insertion hole. The height of the shoe last 3 is adjusted by rotating the vertical screw 17 through the handwheel to adapt to different shoe molds, such as boots, high-top shoes, low-top shoes, etc.

[0045] In other alternative implementations, the height of the shoe last 3 can also be adjusted using a guide rail slider. There are various adjustment schemes available, and this is a mature technology.

[0046] The above description represents the preferred embodiment of this utility model. It should be noted that the protection scope of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these modifications and substitutions are also considered to be within the protection scope of this utility model.

Claims

1. A disc-type multi-color shoe sole injection molding machine, comprising: A turntable (1) is provided to rotate intermittently, and the turntable (1) is provided with an injection station and a feeding station along the circumference; A molding die assembly (2) is arranged circumferentially along the turntable (1) and on the turntable (1). The molding die assembly (2) includes a replaceable shoe last (3), a mold frame (4) and a bottom mold (5). The shoe last (3), the mold frame (4) and the bottom mold (5) together form an injection molding cavity. An injection mechanism (6) is disposed at the injection station, the injection mechanism (6) including an injection head; Its features are: The bottom mold (5) is mounted on the mounting base (7), which can mount at least two sets of bottom molds (5). The bottom mold (5) is provided with a forming groove (28) for accommodating materials. The mounting base (7) is rotatably mounted on the moving frame (8), which is raised and lowered below the turntable (1).

2. The disc-type multi-color shoe sole injection molding machine as described in claim 1, characterized in that: The mounting base (7) has an injection position and a molding position. The mounting base (7) moves up and down between the injection position and the molding position. When the injection mechanism (6) is working, the mounting base (7) is in the injection position.

3. The disc-type multi-color shoe sole injection molding machine as described in claim 2, characterized in that: The mold frame (4) is provided with a flow guide seat (22), the flow guide seat (22) is provided with an injection hole (23) for docking with the injection head and a material guide channel (24), the feeding section of the material guide channel (24) is connected to the injection hole (23), and the discharge section of the material guide channel (24) is inclined downward.

4. The disc-type multi-color shoe sole injection molding machine as described in claim 1, characterized in that: The module (4) is designed to open and close.

5. A disc-type multi-color shoe sole injection molding machine as described in claim 4, characterized in that: The mold frame (4) includes a left mold (9) and a right mold (10). One end of the left mold (9) and one end of the right mold (10) are hinged to the same point on the turntable (1). The other end of the left mold (9) and the other end of the right mold (10) are both hinged to a push-pull arm (11). The push-pull arm (11) is hinged to a swing block (12). The swing block (12) is oscillating on the turntable (1).

6. The disc-type multi-color shoe sole injection molding machine as described in claim 1, characterized in that: The shoe last (3) is fitted with a plug block (13). The shoe last (3) is provided with a plug shaft. The plug block (13) is provided with a plug hole corresponding to the plug shaft. The plug block (13) has a locking block extending on both sides. The shoe last (3) is provided with a locking groove corresponding to the locking block on both sides. The plug block (13) is fitted with a slot (14). The slot (14) is set on the adjustment seat (15). The adjustment seat (15) is set on the turntable (1). The insertion port of the slot (14) is set horizontally.

7. A disc-type multi-color shoe sole injection molding machine as described in claim 6, characterized in that: The adjusting seat (15) is adjusted for height on the base (16), and the base (16) is set on the turntable (1).

8. The disc-type multi-color shoe sole injection molding machine as described in claim 7, characterized in that: A vertical screw (17) is rotatably mounted on the base (16), and a lifting block (18) is threadedly fitted onto the vertical screw (17). The lifting block (18) is connected to the adjusting seat (15).

9. A disc-type multi-color shoe sole injection molding machine as described in claim 1, characterized in that: The movable frame (8) is slidably mounted on the lifting guide rail (19), the lifting guide rail (19) is mounted on the mounting frame (26), the mounting frame (26) is connected to the turntable (1), and a lifting power source (27) for driving the movable frame (8) is provided below the mounting frame (26).

10. A disc-type multi-color shoe sole injection molding machine as described in claim 1, characterized in that: The mounting base (7) has a rotating shaft (20) at both ends. The rotating shaft (20) is connected to the cross handle (21) and the cross handle (21) is rotatably mounted on the mobile frame (8).

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