Injection molding machine for sole of injection-molded shoe
By designing an injection molding shoe sole injection molding machine using a combination structure of upper and lower molds, the automatic removal of the sole is achieved by using the drive shaft and gear mechanism, the problem of unauthorized sole removal in the prior art is solved, the production efficiency is improved and the bonding problem is handled.
Patent Information
- Application Number
- CN202510060208.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-04-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the existing sole injection molding machines remove the sole from the mold, there is a mixture of manual operation and partial automation, and there is a lack of efficient automatic removal equipment.
An injection molding shoe sole injection molding machine is designed, adopting a combined structure of upper mold and lower mold, and synchronous rotation of the first mold and the second mold is achieved through the transmission shaft and the gear mechanism to ensure that the sole is automatically taken out of the mold after the mold is opened.
The sole is automatically removed after opening the mold, which improves production efficiency, avoids the uncertainty of manual operation, and can effectively deal with bonding problems, ensuring that the sole is successfully removed from the mold.
Smart Images
Figure CN119871783A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of shoe sole injection molding machines, and in particular to an injection molding machine for shoe soles. Background Art
[0002] The sole is an important part of the shoe. The sole injection molding machine is mainly used for the injection molding of the sole. The process flow of the injection molding sole is usually: first, the resin, calcium powder, stabilizer, lubricant, foaming agent and other additives are mixed evenly in the mixer, and then heated in the adding equipment to become a melt, and then injected from the injection port into each mold to cool and shape, and finally use tools to remove the cooled and molded sole from the mold.
[0003] When taking out the sole from the mold, some are done manually using tools, while others are done automatically using equipment such as ejectors. We are going to provide a new device that automatically takes out the sole from the mold.
[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art that is already known to one of ordinary skill in the art. Summary of the invention
[0005] The object of the present invention is to design an injection molding machine which can automatically take out the sole from the mold to solve the above-mentioned shortcomings in the technology.
[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection molding machine for shoe soles, comprising a frame, an upper mold installed on the frame and moving vertically, and a lower mold matched with the upper mold, the upper mold is a convex mold, the lower mold is a concave mold, and the upper mold and the lower mold are combined to form a cavity for molding the sole, a mounting frame is installed on the frame, the lower mold is composed of a first mold and a second mold, the forefoot part of the sole is molded in the first mold, and the rear foot part of the sole is molded in the second mold, the first mold and the second mold are fixedly installed with transmission shafts on opposite sides, the two transmission shafts are both rotatably connected to the mounting frame, a gear mechanism is installed at the same end of the two transmission shafts, a power source for driving the transmission shaft to rotate is installed at the other end of one of the transmission shafts, a pressure plate is provided below the first mold, a first hydraulic cylinder is provided below the second mold, a pressing plate is fixedly installed at the end of the output shaft of the first hydraulic cylinder, and the first hydraulic cylinder and the pressure plate are both fixedly connected to the mounting frame;
[0007] After the sole is formed in the upper and lower molds, the power source drives the first mold and the second mold to rotate downward, so that the bottom surface of the sole gradually separates from the first mold and the second mold from the middle to both sides. Because the area of the forefoot part of the sole is larger than the area of the rear foot part, the second mold separates from the sole first. After the first mold drives the sole to contact the pressure plate, the pressing plate presses the sole on the pressure plate, and the first mold continues to rotate and separates from the sole.
[0008] Preferably, the first mold and the second mold have protrusions corresponding to the anti-slip lines of the sole.
[0009] Preferably, in the concave mold of the sole formed by the first mold and the second mold, the area of the concave mold occupied by the first mold is larger than that of the second mold.
[0010] Preferably, when the first mold and the second mold rotate synchronously through the gear mechanism, the rotation speed of the first mold is lower than the rotation speed of the second mold.
[0011] Preferably, the gear mechanism includes a first gear fixedly mounted on the end of the transmission shaft on the first mold, a second gear fixedly mounted on the end of the transmission shaft on the second mold, and a first transmission gear and a second transmission gear meshing with each other, the first transmission gear meshing with the first gear, and the second transmission gear meshing with the second gear.
[0012] Preferably, the number of teeth of the first gear is greater than the number of teeth of the second gear, and the number of teeth of the first transmission gear and the second transmission gear are the same.
[0013] Preferably, the power source comprises a second hydraulic cylinder fixedly mounted on the mounting frame, a rack is fixedly mounted on the end of the output shaft of the second hydraulic cylinder, and a third gear fixedly mounted on the end of the transmission shaft is meshed on the rack.
[0014] Preferably, a discharge guide plate located below the pressure plate is also mounted on the mounting frame.
[0015] In the above technical solution, the technical effects and advantages provided by the present invention are:
[0016] 1. After the mold is opened, the first mold and the second mold rotate downward to separate the sole from the second mold, and the pressing plate clamps the rear foot part of the sole on the pressure plate, so that the first mold that continues to rotate is completely separated from the sole, thereby achieving the purpose of automatically removing the sole from the mold;
[0017] 2. The rotation speed of the second die is faster than that of the first die, and the area of the concave die occupied by the first die is larger than that of the second die, so that when the first die and the second die rotate downward synchronously, the sole will be separated from the second die first, rather than from the first die, thereby ensuring that the pressing plate can press the sole on the pressure plate 100%, avoiding the situation that the sole is separated from the first die first;
[0018] 3. The present invention uses the coordination between various components to ensure that after the soft sole is formed in the lower mold, even if there is a problem of adhesion, it can be pulled off little by little. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 A three-dimensional diagram of the mounting frame of the present invention;
[0022] Figure 3 It is a schematic diagram of the internal structure of the mounting frame of the present invention;
[0023] Figure 4 It is a schematic diagram of separating the sole and the second mold of the present invention.
[0024] Description of reference numerals:
[0025] 1. Frame; 2. Upper die; 3. Lower die; 3a. First die; 3b. Second die; 4. Mounting frame; 5. Transmission shaft; 6. Gear mechanism; 6a. First gear; 6b. Second gear; 6c. First transmission gear; 6d. Second transmission gear; 7. Power source; 7a. Second hydraulic cylinder; 7b. Rack; 7c. Third gear; 8. Pressure plate; 9. First hydraulic cylinder; 10. Pressing plate; 11. Discharge guide plate. DETAILED DESCRIPTION
[0026] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0028] The present invention provides Figure 1-4The shoe sole injection molding machine shown in the figure comprises a frame 1, an upper mold 2 mounted on the frame 1 and moving vertically, and a lower mold 3 cooperating with the upper mold 2, wherein the upper mold 2 is a convex mold and the lower mold 3 is a concave mold. The upper mold 2 and the lower mold 3 are combined to form a cavity for molding the sole. A mounting frame 4 is mounted on the frame 1, and the lower mold 3 is composed of a first mold 3a and a second mold 3b. The forefoot part of the sole is molded in the first mold 3a, and the rear foot part of the sole is molded in the second mold 3b. The first mold 3a and the second mold 3b have protrusions corresponding to the anti-slip lines of the sole. The concave mold of the sole is formed by a mold 3a and a second mold 3b, the area of the concave mold occupied by the first mold 3a is larger than that of the second mold 3b, a transmission shaft 5 is fixedly installed on the opposite side of the first mold 3a and the second mold 3b, and the two transmission shafts 5 are rotatably connected to the mounting frame 4, and a gear mechanism 6 is installed at the same end of the two transmission shafts 5, and a power source 7 for driving the transmission shaft 5 to rotate is installed at the other end of one of the transmission shafts 5, and the power source 7 includes a second hydraulic cylinder 7a fixedly installed on the mounting frame 4, and a rack 7b is fixedly installed on the end of the output shaft of the second hydraulic cylinder 7a, and a third gear 7c fixedly installed on the end of the transmission shaft 5 is meshed on the rack 7b. When the first mold 3a and the second mold 3b rotate synchronously through the gear mechanism 6, the rotation speed of the first mold 3a is less than the rotation speed of the second mold 3b, and the gear mechanism 6 includes a first gear 6a fixedly installed on the end of the transmission shaft 5 on the first mold 3a, and also includes a second gear 6b fixedly installed on the end of the transmission shaft 5 on the second mold 3b, and a first transmission gear 6c and a second transmission gear 6d meshed with each other between the first gear 6a and the second gear 6b. The movable gear 6c is meshed with the first gear 6a, the second transmission gear 6d is meshed with the second gear 6b, the number of teeth of the first gear 6a is greater than the number of teeth of the second gear 6b, the first transmission gear 6c and the second transmission gear 6d have the same number of teeth, a pressure plate 8 is provided under the first die 3a, a first hydraulic cylinder 9 is provided under the second die 3b, a pressing plate 10 is fixedly installed at the end of the output shaft of the first hydraulic cylinder 9, the first hydraulic cylinder 9 and the pressure plate 8 are both fixedly connected to the mounting frame 4, and a discharge guide plate 11 located under the pressure plate 8 is also installed on the mounting frame 4;
[0029] After the sole is formed in the upper mold 2 and the lower mold 3, the mold is opened first. Because the first mold 3a and the second mold 3b have protrusions corresponding to the anti-slip patterns of the sole, the formed sole will remain in the lower mold 3 after the mold is opened. Then the output shaft of the second hydraulic cylinder 7a extends, driving the rack 7b to drive the third gear 7c to rotate, and the third gear 7c drives the transmission shaft 5 to rotate. The transmission shaft 5 will drive the first gear 6a to rotate, the first gear 6a will drive the first transmission gear 6c to rotate, the first transmission gear 6c will drive the second transmission gear 6d to rotate, the second transmission gear 6d will drive the second gear 6b to rotate, and the second gear 6b will drive another transmission shaft 5 to rotate. Because the number of teeth of the first gear 6a is greater than the number of teeth of the second gear 6b, and the number of teeth of the first transmission gear 6c and the second transmission gear 6d are the same, the rotation speeds of the two transmission shafts 5 are different. 5 drives the second die 3b to rotate at a speed greater than that of the first die 3a, because the first die 3a and the second die 3b constitute the concave die of the sole, the area of the concave die occupied by the first die 3a is greater than that of the second die 3b, and the area of the forefoot part of the sole is greater than that of the rear foot part, so when the first die 3a and the second die 3b rotate downward, the second die 3b is first completely separated from the sole, and at this time, the toe part of the sole is bonded to the first die 3a, and after the first die 3a drives the sole to contact the pressure plate 8, the output shaft of the first hydraulic cylinder 9 drives the pressing plate 10 to move toward the pressure plate 8 to clamp the sole, and at this time, when the first die 3a continues to rotate, the toe part of the sole bonded to the first die 3a will be pulled apart, and then the output shafts of the first hydraulic cylinder 9 and the second hydraulic cylinder 7a are reset, and the sole will fall onto the discharge guide plate 11 and slide down, and the first die 3a and the second die 3b are reset.
[0030] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are exemplary only. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application.
Claims
1. An injection molding machine for molding shoe soles, comprising a frame (1), an upper mold (2) mounted on the frame (1) and movable vertically, and a lower mold (3) cooperating with the upper mold (2), wherein the upper mold (2) is a male mold and the lower mold (3) is a female mold, and the upper mold (2) and the lower mold (3) are molded together to form a cavity for molding the shoe sole, characterized in that: The frame (1) is provided with a mounting frame (4), the lower mold (3) is composed of a first mold (3a) and a second mold (3b), the forefoot part of the sole is formed in the first mold (3a), and the rear foot part of the sole is formed in the second mold (3b), a transmission shaft (5) is fixedly installed on the opposite sides of the first mold (3a) and the second mold (3b), the two transmission shafts (5) are both rotatably connected to the mounting frame (4), a gear mechanism (6) is commonly installed at the same end of the two transmission shafts (5), a power source (7) for driving the transmission shaft (5) to rotate is installed at the other end of one of the transmission shafts (5), a pressure plate (8) is provided below the first mold (3a), a first hydraulic cylinder (9) is provided below the second mold (3b), a pressing plate (10) is fixedly installed at the end of the output shaft of the first hydraulic cylinder (9), and the first hydraulic cylinder (9) and the pressure plate (8) are both fixedly connected to the mounting frame (4); After the sole is formed in the upper mold (2) and the lower mold (3), the power source (7) drives the first mold (3a) and the second mold (3b) to rotate downward, so that the bottom surface of the sole gradually separates from the first mold (3a) and the second mold (3b) from the middle to the two sides. Because the area of the forefoot part of the sole is larger than the area of the rear foot part, the second mold (3b) is separated from the sole first. After the first mold (3a) drives the sole to contact the pressure plate (8), the pressing plate (10) presses the sole on the pressure plate (8), and the first mold (3a) continues to rotate and separates from the sole.
2. The shoe sole injection molding machine according to claim 1, characterized in that: The first mold (3a) and the second mold (3b) have protrusions corresponding to the anti-slip lines on the sole.
3. The shoe sole injection molding machine according to claim 1, characterized in that: The first mold (3a) and the second mold (3b) form a concave mold of the sole, and the area occupied by the first mold (3a) is larger than that of the second mold (3b).
4. The shoe sole injection molding machine according to claim 1, characterized in that: When the first mold (3a) and the second mold (3b) rotate synchronously through the gear mechanism (6), the rotation speed of the first mold (3a) is lower than the rotation speed of the second mold (3b).
5. The shoe sole injection molding machine according to claim 4, characterized in that: The gear mechanism (6) comprises a first gear (6a) fixedly mounted on the end of the transmission shaft (5) on the first mold (3a), a second gear (6b) fixedly mounted on the end of the transmission shaft (5) on the second mold (3b), and a first transmission gear (6c) and a second transmission gear (6d) meshing with each other between the first gear (6a) and the second gear (6b), wherein the first transmission gear (6c) meshes with the first gear (6a), and the second transmission gear (6d) meshes with the second gear (6b).
6. The shoe sole injection molding machine according to claim 5, characterized in that: The number of teeth of the first gear (6a) is greater than the number of teeth of the second gear (6b), and the number of teeth of the first transmission gear (6c) and the second transmission gear (6d) are the same.
7. The shoe sole injection molding machine according to claim 1, characterized in that: The power source (7) comprises a second hydraulic cylinder (7a) fixedly mounted on the mounting frame (4); a rack (7b) is fixedly mounted on the end of the output shaft of the second hydraulic cylinder (7a); and a third gear (7c) fixedly mounted on the end of the transmission shaft (5) is meshed with the rack (7b).
8. The shoe sole injection molding machine according to claim 1, characterized in that: The mounting frame (4) is also provided with a discharge guide plate (11) located below the pressure plate (8).