Sole forming production line

Abstract

The utility model discloses a sole forming production line which comprises a plurality of forming devices arranged at intervals, forming molds are arranged on the forming devices, a movable base extending in the arrangement direction of the forming devices is arranged on one side of each forming device, and an injection molding device capable of moving along the movable base and injecting raw materials into the forming molds is arranged on the movable base. Each forming device is provided with a vacuum cover and branch pipes, the vacuum covers are used for sealing the forming molds after the raw materials are injected into the forming molds, the branch pipes are communicated with the vacuum covers, and one side of each forming device is provided with a vacuumizer which is connected with the branch pipes through a main pipe and can extract air in each vacuum cover to form negative pressure so that bubbles in the raw materials can be discharged. In the working process, the vacuumizer pumps out air in the vacuum covers, negative pressure is formed around the mold, bubbles in raw materials are rapidly discharged, formed products do not have bubbles, the yield of finished shoe soles is increased, the multiple forming stations are arranged in parallel, the injection positions are rapidly switched in cooperation with the movable injection molding device, and the production efficiency is improved.

Description

[Technical Field]

[0001] This utility model relates to a shoe sole forming production line. [Background Technology]

[0002] Currently, using molds to produce shoe soles is a common technique in the shoe sole manufacturing industry. When using molds to produce shoe soles, the mold cover is opened, liquid raw material is injected into the mold, the mold cover is closed, and the mixture is heated and cooled to solidify. Because the raw material is in a liquid state, air bubbles are formed during the raw material processing and injection process. This results in residual air bubbles in the formed shoe sole, causing problems such as voids and insufficient structural strength, thus affecting product quality.

[0003] Therefore, this utility model was created based on the above-mentioned shortcomings. [Utility Model Content]

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a shoe sole forming production line that improves product quality and is highly efficient.

[0005] This utility model is achieved through the following technical solution:

[0006] A shoe sole molding production line, characterized in that: it includes multiple molding devices 1 arranged at intervals, each molding device 1 is provided with a molding mold 11, a movable base 2 extending along the arrangement direction of the molding devices 1 is provided on one side of the molding device 1, an injection molding device 3 is provided on the movable base 2, which can move along the movable base 2 and inject raw materials into each molding mold 11, each molding device 1 is provided with a vacuum hood 12 that seals the molding mold 11 after the raw materials are injected into it, and a branch pipe 6 communicating with the vacuum hood 12, and a vacuum pump 5 is provided on one side of the molding device 1, which is connected to multiple branch pipes 6 through a main pipe 4 and can extract air from each vacuum hood 12 to form a negative pressure and expel air bubbles in the raw materials.

[0007] The shoe sole forming production line described above is characterized in that: the forming device 1 includes a body 13 with an open upper end and a flap 14 hinged at one end to the opening of the body 13; the forming mold 11 includes an upper mold 111 disposed on the flap 14 and a lower mold 112 disposed on the body 13; the body 13 is provided with a first driving device 15 that can drive the flap 14 to flip toward the opening of the body 13 so that the upper mold 111 and the lower mold 112 cooperate or drive the flap 14 to flip upward; the vacuum cover 12 is open at the upper end and is disposed inside the body 13 and can move up and down relative to each other; the body 13 is provided with a second driving device 16 that can drive the vacuum cover 12 to move upward so that the upper end of the vacuum cover 12 abuts against the flap 14 after the upper mold 111 and the lower mold 112 are closed; when the vacuum cover 12 abuts against the flap 14, it cooperates with the flap 14 to form a sealed space 17 surrounding the upper mold 111 and the lower mold 112 and communicating with the branch pipe 6.

[0008] The shoe sole forming production line described above is characterized in that: the machine body 13 is provided with a third driving device 18 that can drive the lower mold 112 to move upward and abut against the upper mold 111 when the flip plate 14 is flipped above the lower mold 112.

[0009] The shoe sole forming production line described above is characterized in that: the machine body 13 is provided with a positioning boss 131 for the lower surface of the flip plate 14 to be pressed and positioned when the flip plate 14 is flipped into place at the opening of the machine body 13, and a mold locking device 19 that can lock the flip plate 14 when the flip plate 14 is pressed against the positioning boss 131.

[0010] The shoe sole forming production line described above is characterized in that: the locking device 19 includes a locking block 191 with one end hinged to the positioning boss 131 and a cylinder 192 with one end hinged to the machine body 13. The cylinder 192 is provided with a cylinder rod 1921 with one end hinged to the locking block 191. The machine body 13 is provided with a proximity switch 193 that controls the cylinder 192 to drive the cylinder rod 1921 to rotate the locking block 191 and lock the flip plate 14 on the positioning boss 131 when the flip plate 14 is pressed against the positioning boss 131.

[0011] The shoe sole forming production line described above is characterized in that: the first driving device 15 includes two first hydraulic cylinders 151 respectively disposed on both sides of the machine body 13, one end of the first hydraulic cylinder 151 is hinged to the machine body 13, and the piston rods extending from the other ends of the two first hydraulic cylinders 151 are respectively hinged to both sides of the flip plate 14.

[0012] The shoe sole forming production line described above is characterized in that: the second driving device 16 includes a plurality of second hydraulic cylinders 161 installed inside the machine body 13, and one end of the piston rod of the second hydraulic cylinder 161 is fixed to the lower end face of the vacuum chamber 12.

[0013] The shoe sole forming production line described above is characterized in that: a lower template 10 is provided below the lower mold 112, and the third driving device 18 includes a plurality of third hydraulic cylinders 181 installed in the machine body 13, with one end of the piston rod of the third hydraulic cylinder 181 passing through the vacuum cover 12 and fixed to the lower end surface of the lower template 10.

[0014] The shoe sole molding production line described above is characterized in that: the injection molding device 3 includes a moving platform 31 that can move left and right along the moving base 2, a frame 32 that is mounted on the moving platform 31 and can move back and forth relative to the moving platform 31 in the direction of approaching or moving away from the molding device 1, a vertical slide 33 that can move up and down along the frame 32, a reduction motor 34 mounted on the vertical slide 33, a rotating arm 35 driven to rotate by the reduction motor 34, and an injection head 36 mounted on the rotating arm 35 and able to move with the rotating arm 35 above the molding mold 11 to inject raw materials.

[0015] The shoe sole forming production line described above is characterized in that: the mobile platform 31 is provided with a receiving bucket 7 that can receive the raw material dripping from the injection head 36 after the geared motor group 34 drives the rotating arm 35 to reset the injection head 36.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The vacuum pump of this utility model is connected to each vacuum chamber through a main pipe and multiple branch pipes. When the injection molding device injects raw material into the molding mold and the molding mold closes, the vacuum pump can extract the air from each vacuum chamber, forming a negative pressure around the mold to quickly expel air bubbles in the raw material. This way, the molded product will not have air bubbles, improving the yield of finished shoe soles. Moreover, the multiple molding stations are set up in parallel, and the injection position can be quickly switched with the moving injection device, improving production efficiency and significantly shortening the production cycle.

[0018] 2. In this utility model, when the flip plate flips to the top of the lower mold, the third driving device can drive the lower mold to move upward and fit against the upper mold to close the mold. In this way, even if different lower molds have different thicknesses, the upward movement of the lower mold can ensure that different molds can be closed, making the molding device highly versatile and applicable to molds of different thicknesses.

[0019] 3. In this utility model, when the flip plate presses against the positioning boss, the cylinder of the mold locking device drives the locking block to rotate, locking the flip plate to prevent the mold from loosening or shifting during the injection molding process.

[0020] 4. When the injection head resets, the receiving bucket catches the raw material dripping from the injection head to avoid waste and contamination of the production line. [Attached Image Description]

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the molding device of this utility model in the mold-open state;

[0023] Figure 3 This is a schematic diagram of the molding device of this utility model in the mold-closed state;

[0024] Figure 4 This is a front view of the molding device of this utility model in the mold-closed state;

[0025] Figure 5 yes Figure 4 Sectional view at point AA;

[0026] Figure 6 This is a schematic diagram of the injection molding device of this utility model.

Detailed Implementation Methods

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1 to 6 As shown, a shoe sole molding production line includes multiple molding devices 1 spaced apart. Each molding device 1 is equipped with a molding die 11. A movable base 2 extending along the arrangement direction of the molding devices 1 is located on one side of each molding device 1. An injection molding device 3, which can move along the movable base 2 and inject raw materials into each molding die 11, is located on the movable base 2. Each molding device 1 is equipped with a vacuum hood 12 that seals the molding die 11 after the raw materials are injected, and a branch pipe 6 connected to the vacuum hood 12. A vacuum pump 5, which is connected to multiple branch pipes 6 via a main pipe 4, is located on one side of each molding device 1 and can extract air from each vacuum hood 12 to create negative pressure and expel air bubbles from the raw materials. Specifically, a control box 8 is also located on the front side of each molding device 1. The control box 8 contains an electrical control module and has buttons on its surface for controlling the operation of the molding device 1. Each connection between the branch pipe 6 and the main pipe 4 is equipped with a control valve 9 for controlling the airflow. When the molding device 1 is working, the corresponding control valve 9 will open, allowing the vacuum pump 5 to vacuum the vacuum hood 12 on the corresponding molding device 1.

[0029] The vacuum pump 5 of this invention is connected to each vacuum chamber 12 via a main pipe 4 and multiple branch pipes 6. When the injection molding device 3 injects raw material into the molding mold 11 and the molding mold 11 is closed, the vacuum pump 5 can extract the air from each vacuum chamber 12, forming a negative pressure around the mold to quickly expel air bubbles from the raw material. This ensures that the molded product will not have air bubbles, improving the yield of finished shoe soles. Moreover, the parallel setting of multiple molding stations, combined with the mobile injection molding device, allows for rapid switching of the injection position, improving production efficiency and significantly shortening the production cycle.

[0030] like Figure 2As shown, the molding device 1 includes a body 13 with an opening at the top and a flap 14 hinged at one end to the opening of the body 13. The molding mold 11 includes an upper mold 111 disposed on the flap 14 and a lower mold 112 disposed on the body 13. The body 13 is provided with a first driving device 15 that can drive the flap 14 to flip towards the opening of the body 13 so that the upper mold 111 and the lower mold 112 can cooperate or drive the flap 14 to flip upward. The vacuum cover 12 is disposed inside the body 13 with an opening at the top and can move up and down relative to each other. The body 13 is provided with a second driving device 16 that can drive the vacuum cover 12 to move upward so that the upper end of the vacuum cover 12 abuts against the flap 14 after the upper mold 111 and the lower mold 112 are closed. When the vacuum cover 12 abuts against the flap 14, it cooperates with the flap 14 to form a sealed space 17 that surrounds the upper mold 111 and the lower mold 112 and is connected to the branch pipe 6. Specifically, a sealing ring 20 is provided at the upper opening of the vacuum cover 12. When the vacuum cover 12 is against the flap 14, the sealing ring 20 is pressed against the end face of the flap 14. In this way, the vacuum cover 12 covers the outside of the forming mold 11 and cooperates with the flap 14 to form a sealed space 17 with good airtightness, leaving only a connecting hole to communicate with the branch pipe 6. Moreover, the branch pipe 6 also has a retractable elastic pipe section 61, which can extend and retract to adapt when the vacuum cover 12 moves up and down, so that the branch pipe 6 is always connected to the vacuum cover 12.

[0031] Specifically, the first driving device 15 includes two first hydraulic cylinders 151 respectively located on both sides of the machine body 13. One end of each first hydraulic cylinder 151 is hinged to the machine body 13, and the piston rods extending from the other ends of the two first hydraulic cylinders 151 are respectively hinged to both sides of the flip plate 14. When the first hydraulic cylinder 151 drives the flip plate 14 to flip downward, the upper mold 111 on the flip plate 14 closes with the lower mold 112 inside the machine body 13; conversely, when the first hydraulic cylinder 151 drives the flip plate 14 to flip upward, the upper mold 111 and the lower mold 112 open.

[0032] Specifically, the second drive device 16 includes several second hydraulic cylinders 161 installed inside the machine body 13. One end of the piston rod of each second hydraulic cylinder 161 is fixed to the lower end face of the vacuum chamber 12. In a specific implementation, four second hydraulic cylinders 161 may be provided, which are evenly installed around the central axis of the machine body 13 inside the cavity of the machine body 13. One end of the piston rod of each second hydraulic cylinder 161 is fixedly connected to the four bottom corners of the vacuum chamber 12.

[0033] Specifically, a lower template 10 is provided below the lower mold 112. The third driving device 18 includes several third hydraulic cylinders 181 installed inside the machine body 13. One end of the piston rod of the third hydraulic cylinder 181 passes through the vacuum cover 12 and is fixed to the lower end face of the lower template 10. In a specific implementation, one third hydraulic cylinder 181 is installed in the middle of the cavity of the machine body 13, and one end of its piston rod passes through the middle of the vacuum cover 12 and is fixedly connected to the lower template 10. Of course, its piston rod and the vacuum cover 12 are slidably sealed.

[0034] Since different lower molds may have different thicknesses, in order to ensure that the molding device can be used with molds of different thicknesses, this utility model provides a third driving device 18 inside the machine body 13, which can drive the lower mold 112 to move upward and abut against the upper mold 111 to close the mold when the flip plate 14 is flipped above it. In this way, even if different lower molds have different thicknesses, the upward movement of the lower mold 112 can ensure that different molds can be closed, making the molding device highly versatile.

[0035] Furthermore, the machine body 13 is provided with a positioning boss 131 for the lower surface of the flip plate 14 to press and position itself after the flip plate 14 is flipped into place at the opening of the machine body 13, and a mold locking device 19 that locks the flip plate 14 when it is pressed against the positioning boss 131. When the flip plate 14 is pressed against the positioning boss 131, the cylinder of the mold locking device 19 drives the locking block 191 to rotate, automatically locking the flip plate 14 to prevent the mold from loosening or shifting during the injection molding process.

[0036] Specifically, the mold-locking device 19 includes a locking block 191 with one end hinged to the positioning boss 131 and a cylinder 192 with one end hinged to the machine body 13. The cylinder 192 is provided with a cylinder rod 1921 with one end hinged to the locking block 191. The machine body 13 is provided with a proximity switch 193 that controls the cylinder 192 to drive the cylinder rod 1921 to rotate and lock the locking block 191 when the flap 14 is pressed against the positioning boss 131, thereby locking the flap 14 on the positioning boss 131. When the proximity switch 193 detects that the flap 14 is pressed against the positioning boss 131, the cylinder 192 drives the locking block 191 to rotate and lock the flap 14, preventing displacement during the mold closing process.

[0037] The injection molding device 3 includes a movable platform 31 that can move left and right along the movable base 2, a frame 32 mounted on the movable platform 31 and capable of moving forward and backward relative to the movable platform 31 in the direction of approaching or moving away from the molding device 1, a vertical slide 33 capable of moving up and down along the frame 32, a geared motor assembly 34 mounted on the vertical slide 33, a rotating arm 35 driven by the geared motor assembly 34, and an injection head 36 mounted on the rotating arm 35 and capable of moving with the rotating arm 35 above the molding die 11 to inject raw materials. Specifically, the geared motor assembly 34 includes a motor and a gearbox driven by the motor to rotate the rotating arm 35. The left and right movement of the mobile platform 31, the forward and backward movement of the frame 32, and the up and down movement of the vertical slide 33 can all be driven by a motor screw assembly. The motor screw assembly includes a motor, a screw driven by the motor to rotate, and a screw seat mounted on the screw. Each screw is rotatably mounted on the mobile base 2, the mobile platform 31, and the frame 32, and each screw seat is fixed on the mobile platform 31, the frame 32, and the vertical slide 33. The working principle is the same as that of the existing motor screw driven slide.

[0038] In practice, after the material is fed, the geared motor 34 drives the rotating arm 35 to reset to be parallel with the moving base 2. To avoid interfering with the mold opening of the molding device 1, the moving platform 31 is equipped with a receiving bucket 7 that can receive the raw material dripping from the injection head 36 after the geared motor 34 drives the rotating arm 35 to reset. When the injection head resets, the receiving bucket receives the raw material dripping from the injection head, avoiding waste and contamination of the production line.

[0039] Working process: The moving platform 31 of the injection molding device 3 moves along the moving base 2, the frame 32 can move back and forth to adjust its position, and the vertical slide 33 drives the injection head 36 to move up and down to a suitable height. The geared motor 34 drives the rotating arm 35 to rotate, precisely positioning the injection head 36 above the molding die 11 to complete the material injection. Then, as the geared motor 34 drives the rotating arm 35 to rotate and reset, the receiving hopper 7 collects the material dripping from the injection head 36, preventing waste and contamination. After the injection molding device 3 completes the material injection, the first hydraulic cylinder 151 drives the flip plate 14 to flip downwards above the lower die. Next, the third hydraulic cylinder 181 drives the lower mold plate 10 to move the lower die 112 upwards, causing the upper die 111 and lower die 112 to close. After mold closure, the second hydraulic cylinder 161 drives the vacuum chamber 12 upwards, so that its upper end abuts against the flip plate 14, forming a sealed space 17 surrounding the upper die 111 and lower die 112. Finally, the vacuum pump 5 evacuates air from the sealed spaces 17 within each vacuum chamber 12 through the main pipe 4 and branch pipes 6, creating a negative pressure environment. Under negative pressure, air bubbles in the material are quickly expelled, ensuring that the molded shoe sole is free of residual air bubbles, thus improving product quality.

[0040] This utility model shoe sole molding production line effectively solves the problem of residual air bubbles in shoe sole molding by combining automated mold opening and closing, vacuum exhaust structure and high-efficiency injection system, and also greatly improves production efficiency and enhances product competitiveness.

Claims

1. A shoe sole forming production line, characterized in that: The device includes multiple spaced molding devices (1), each molding device (1) is equipped with a molding die (11), and a movable base (2) extending along the arrangement direction of the molding devices (1) is provided on one side of the molding device (1). The movable base (2) is equipped with an injection molding device (3) that can move along the movable base (2) and inject raw materials into each molding die (11). Each molding device (1) is equipped with a vacuum hood (12) that seals the molding die (11) after the raw materials are injected into it, and a branch pipe (6) that communicates with the vacuum hood (12). A vacuum pump (5) is provided on one side of the molding device (1) that is connected to multiple branch pipes (6) through a main pipe (4) and can extract air from each vacuum hood (12) to form a negative pressure and expel air bubbles from the raw materials.

2. The shoe sole forming production line according to claim 1, characterized in that: The molding device (1) includes a body (13) with an opening at the top and a flap (14) hinged at one end to the opening of the body (13). The molding die (11) includes an upper die (111) disposed on the flap (14) and a lower die (112) disposed on the body (13). The body (13) is provided with a first driving device (15) that can drive the flap (14) to flip towards the opening of the body (13) so that the upper die (111) and the lower die (112) cooperate or drive the flap (14) to flip upward. The vacuum shroud (12) is open at the top and can be moved up and down relative to each other inside the body (13). The body (13) is provided with a second driving device (16) that can drive the vacuum shroud (12) to move upward after the upper mold (111) and the lower mold (112) are closed, so that the upper end of the vacuum shroud (12) is attached to the flip plate (14). When the vacuum shroud (12) is attached to the flip plate (14), it cooperates with the flip plate (14) to form a sealed space (17) that surrounds the upper mold (111) and the lower mold (112) and is connected to the branch pipe (6).

3. The shoe sole forming production line according to claim 2, characterized in that: The machine body (13) is equipped with a third driving device (18) that can drive the lower mold (112) to move upward and fit against the upper mold (111) when the flip plate (14) is flipped above the lower mold (112).

4. The shoe sole forming production line according to claim 2, characterized in that: The body (13) is provided with a positioning boss (131) for the lower surface of the flip plate (14) to press and position after the flip plate (14) is flipped into place at the opening of the body (13), and a locking device (19) for locking the flip plate (14) after the flip plate (14) is pressed against the positioning boss (131).

5. The shoe sole forming production line according to claim 4, characterized in that: The locking device (19) includes a locking block (191) with one end hinged to the positioning boss (131) and a cylinder (192) with one end hinged to the machine body (13). The cylinder (192) is provided with a cylinder rod (1921) with one end hinged to the locking block (191). The machine body (13) is provided with a proximity switch (193) that controls the cylinder (192) to drive the cylinder rod (1921) to rotate the locking block (191) and lock the flip plate (14) on the positioning boss (131) when the flip plate (14) is pressed against the positioning boss (131).

6. The shoe sole forming production line according to claim 2, characterized in that: The first driving device (15) includes two first hydraulic cylinders (151) respectively located on both sides of the body (13). One end of the first hydraulic cylinder (151) is hinged to the body (13), and the piston rods extending from the other end of the two first hydraulic cylinders (151) are respectively hinged to both sides of the flap (14).

7. The shoe sole forming production line according to claim 2, characterized in that: The second drive device (16) includes a plurality of second hydraulic cylinders (161) installed inside the body (13), and one end of the piston rod of the second hydraulic cylinder (161) is fixed to the lower end face of the vacuum shroud (12).

8. The shoe sole forming production line according to claim 3, characterized in that: The lower mold (112) is provided with a lower template (10) below it. The third driving device (18) includes several third hydraulic cylinders (181) installed in the machine body (13). One end of the piston rod of the third hydraulic cylinder (181) passes through the vacuum cover (12) and is fixed on the lower end face of the lower template (10).

9. The shoe sole forming production line according to claim 1, characterized in that: The injection molding device (3) includes a moving platform (31) that can move left and right along the moving base (2), a frame (32) that is mounted on the moving platform (31) and can move back and forth relative to the moving platform (31) in the direction of approaching or moving away from the molding device (1), a vertical slide (33) that can move up and down along the frame (32), a geared motor assembly (34) mounted on the vertical slide (33), a rotating arm (35) driven to rotate by the geared motor assembly (34), and an injection head (36) mounted on the rotating arm (35) and able to move with the rotating arm (35) above the molding die (11) to inject raw materials.

10. The shoe sole forming production line according to claim 9, characterized in that: The mobile platform (31) is equipped with a receiving bucket (7) that can receive the raw materials dripping from the injection head (36) after the geared motor group (34) drives the rotating arm (35) to reset the injection head (36).

Images