Sole injection molding machine for sports shoe production

Abstract

The invention relates to the technical field of injection molding shoemaking, in particular to a shoe sole injection molding machine for sneaker production, which comprises a left mold and a right mold corresponding to the two sides of a shoe sole, a bottom mold corresponding to the bottom surface of the shoe sole, and a shoe tree inserted into a vamp, the left mold and the right mold form a forming cavity when the left mold and the right mold are closed above the bottom mold, molten plastic injected into the forming cavity from the injection molding hole is solidified and then bonded with the bottom of the vamp to form a sole, and the bottom mold comprises a bottom pattern piece corresponding to the outline of the sole and a guide piece slidably connected outside the bottom pattern piece; when the left mold and the right mold are separated from each other, the bottom mold can be driven to descend, so that the bottom mold is automatically separated from the bottom surface of a shoe sole, the shoe sole does not need to be manually taken down from the bonded bottom mold in the prior art, manpower is saved, the production efficiency is improved, and the production cost is reduced. And the production efficiency is also improved, and the mold is opened for separation.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding shoemaking, in particular to a sole injection molding machine for producing sports shoes. Background Art

[0002] The injection method of existing shoe injection molding machines is mature, easy to operate, and has low operating costs. Therefore, a large number of mid- and low-end shoes have chosen one-time upper molding. The soles of injection-molded shoes are generally made of plastic. Plastic injection molding is a production method in which the rubber is directly injected from the barrel into the mold cavity and the fabric or leather upper is bonded. Injection molding is performed at a certain temperature and pressure to give the upper and sole a certain degree of flexibility and elasticity, and to allow the two to be integrated with each other. The specific operation is that the left mold, the right mold, and the bottom mold will close the bottom of the upper with the shoe last, and then inject molten plastic into this closed chamber. After the molten plastic cools, the sole will be formed. At this time, the left mold and the right mold are opened, and the sole can be pulled off the bottom mold using the shoe last.

[0003] However, after injection molding, the sole is directly pulled off the bottom mold with the shoe last. After the molten plastic cools to form the sole, there is actually a certain adhesion between the sole and the bottom mold. Therefore, the bottom mold actually has a downward pulling force on the bottom surface of the sole, and workers need to expend a certain amount of force to remove it.

[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 purpose of the present invention is to design a sole injection molding machine which can automatically separate the sole from the bottom mold when the left and right molds are opened, and can automatically reset the bottom mold when the molds are closed, so as 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: a sole injection molding machine for sports shoe production, comprising a left mold and a right mold corresponding to both sides of the sole, a bottom mold corresponding to the bottom surface of the sole, and a shoe last inserted into the upper, an injection hole is provided between the left mold and the right mold, and a molding chamber is formed when the left mold and the right mold are molded together above the bottom mold, and the molten plastic injected from the injection hole into the molding chamber will be bonded to the bottom of the upper to form a sole after solidification, and the bottom mold comprises a bottom pattern piece corresponding to the contour of the sole, and a guide slidably connected to the outside of the bottom pattern piece Part, the shading part is composed of a plurality of separation blocks slidably connected to each other, the shading part passes through the guide part, and the left mold and the right mold both clamp the side wall of the shading part when the film is closed, the bottom of the guide part is fixedly installed with a mounting seat, the bottom of the left mold and the right mold are fixedly installed with lower pressing blocks corresponding to the number and position of the separation blocks, the bottom of the lower pressing block is attached with a transmission member that slides vertically with the mounting seat, the transmission member and the separation block are fixedly connected, a horizontal slide groove is opened inside the transmission member, and an upper lifting member fixedly installed below the lower pressing block is slidably connected in the horizontal slide groove;

[0007] When the left mold and the right mold move away from each other, the multiple lower pressing blocks drive the corresponding transmission parts to descend in turn, thereby separating the separation blocks from the solidified bottom surface of the sole in turn; when the left mold and the right mold are approached to each other for closing, the multiple lower pressing blocks drive the corresponding transmission parts to rise in turn through the lifting parts, thereby raising the separation blocks in turn to form the bottom of the molding chamber.

[0008] Preferably, the overall cross-section of the lower pressing block is an inverted right-angled trapezoid, with its inclined surface facing downward and located on the side away from the separation block, and the lengths of the multiple lower pressing blocks decrease successively.

[0009] Preferably, the transmission member includes a first piece parallel to the inclined surface of the lower pressure block, a second piece fixedly connected to the side of the first piece close to the separation block, a third piece fixedly connected to the side of the first piece away from the separation block, and a connecting rod fixedly connected between the third piece and the separation block, and the transverse sliding groove is opened in the first piece, the second piece and the third piece.

[0010] Preferably, the lifting member includes a vertical rod fixedly connected to the bottom of the lower pressing block, and a roller rotatably connected to the vertical rod, and the vertical rod passes through the transverse sliding groove and is slidably connected to the transverse sliding groove.

[0011] Preferably, when the outer peripheral surface of the roller contacts the bottom surface of the second sheet, the lower pressing block does not contact the first sheet, and when the lower pressing block contacts the first sheet, the roller is separated from the bottom surface of the second sheet.

[0012] Preferably, hydraulic power components for driving the left mold and the right mold to open and close are respectively installed on both sides of the mounting seat.

[0013] Preferably, the bottom ends of the second piece and the third piece are fixedly connected to vertical plates, and the mounting seat is fixedly mounted with a guide plate that slides perpendicularly to the vertical plate.

[0014] Preferably, the horizontal length of the first sheet is greater than the vertical length, and the angle between the first sheet and the horizontal plane is less than 45°.

[0015] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0016] 1. When the left mold and the right mold are separated from each other, the present invention will also drive the bottom mold to descend, so that the bottom mold and the bottom surface of the sole are automatically separated. There is no need to manually remove the sole from the bonded bottom mold as in the prior art, which not only saves manpower but also improves production efficiency. The mold is opened and the shoe is separated;

[0017] 2. When opening the mold, the present invention will separate the bottom mold bonded to the sole in sequence. Compared with the prior art of manually pulling the sole off the bottom mold at one time, the contact area of ​​a single separation block is small, so that the pulling force during adhesion is reduced, thereby reducing the pulling damage to the sole during separation, and there is no need to wait for the sole to be completely cooled and formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 A perspective view of the present invention;

[0021] Figure 3 It is a schematic diagram of mold opening of the present invention;

[0022] Figure 4 It is a schematic diagram of the bottom structure of the left mold and the right mold of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection between the transmission member and the lifting member of the present invention;

[0024] Figure 6 It is a schematic diagram of the mounting seat of the present invention.

[0025] Description of reference numerals:

[0026] 1. Left mold; 2. Right mold; 3. Bottom mold; 4. Shoe last; 5. Injection hole; 6. Molding chamber; 7. Sole; 8. Bottom pattern piece; 8a. Separation block; 9. Guide piece; 10. Mounting seat; 11. Lower pressure block; 12. Transmission piece; 12a. First piece; 12b. Second piece; 12c. Third piece; 12d. Connecting rod; 13. Horizontal slide; 14. Lifting piece; 14a. Vertical rod; 14b. Roller; 15. Hydraulic power assembly; 16. Vertical plate; 17. Guide plate. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] The present invention provides Figure 1-6The sole injection molding machine for sports shoe production shown in the figure comprises a left mold 1 and a right mold 2 corresponding to the two sides of the sole 7, a bottom mold 3 corresponding to the bottom surface of the sole 7, and a shoe last 4 inserted into the upper. The shoe last 4 is installed on the existing injection molding machine frame and is used to form a foot shape with the soft upper in combination with the left mold 1, the right mold 2 and the bottom mold, so as to facilitate the cooling and solidification of the molten plastic under the upper to form the sole 7. An injection hole 5 is provided between the left mold 1 and the right mold 2. The injection hole 5 is used for the barrel in the prior art to inject the molten plastic into the mold. When the left mold 1 and the right mold 2 are molded together above the bottom mold 3, a molding chamber 6 is formed. The molten plastic injected into the molding chamber 6 from the injection hole 5 will solidify and adhere to the upper and bottom The bottom of the left mold 1 and the right mold 2 are bonded to form a sole 7, the bottom mold 3 includes a shading piece 8 corresponding to the contour of the sole 7, and a guide piece 9 slidably connected to the outside of the shading piece 8, the shading piece 8 is composed of a plurality of separation blocks 8a slidably connected to each other, the shading piece 8 runs through the guide piece 9, and the side wall of the shading piece 8 is clamped when the left mold 1 and the right mold 2 are closed, a mounting seat 10 is fixedly installed at the bottom of the guide piece 9, and lower pressing blocks 11 corresponding to the number and position of the separation blocks 8a are fixedly installed at the bottom of the left mold 1 and the right mold 2, the overall cross-section of the lower pressing block 11 is an inverted right-angled trapezoid, its inclined surface faces downward, and is located on the side away from the separation block 8a, the lengths of the plurality of lower pressing blocks 11 decrease successively, and a transmission member 12 is attached to the bottom of the lower pressing block 11, and the transmission member 12 includes a lower pressing block 1 The first piece 12a parallel to the inclined surface, the second piece 12b fixedly connected to the side of the first piece 12a close to the separation block 8a, the third piece 12c fixedly connected to the side of the first piece 12a away from the separation block 8a, and the connecting rod 12d fixedly connected between the third piece 12c and the separation block 8a, the first piece 12a, the second piece 12b and the third piece 12c are provided with a transverse slide groove 13, and the transverse slide groove 13 is slidably connected with an upper lifting member 14 fixedly installed below the lower pressing block 11, the upper lifting member 14 includes a vertical rod 14a fixedly connected to the bottom of the lower pressing block 11, and a roller 14b rotatably connected to the vertical rod 14a, the vertical rod 14a penetrates the transverse slide groove 13 and is slidably connected to the transverse slide groove 13, the second piece 12b and the third piece 12c are provided with a transverse slide groove 13, and ... The ends of the bottom surface of the third piece 12c are fixedly connected with a vertical plate 16, and a guide plate 17 that slides vertically with the vertical plate 16 is fixedly installed on the mounting seat 10. Hydraulic power components 15 for driving the left mold 1 and the right mold 2 to open and close the mold are also installed on both sides of the mounting seat 10. The horizontal length of the first piece 12a is greater than the vertical length, and the angle between the first piece 12a and the horizontal plane is less than 45°. The purpose is to make the lowering speed of the transmission member 12 smaller than the horizontal moving speed of the lower pressing block 11 when the lower pressing block 11 moves horizontally. When the outer peripheral surface of the roller 14b contacts the bottom surface of the second piece 12b, the lower pressing block 11 does not contact the first piece 12a, and when the lower pressing block 11 contacts the first piece 12a, the roller 14b is separated from the bottom surface of the second piece 12b;

[0030] The staff installs the upper with the shoe last 4 just above the bottom mold 3, and then the two hydraulic power assemblies 15 drive the left mold 1 and the right mold 2 to close the film. At this time, the roller 14b contacts the bottom surface of the third piece 12c. At this time, there is a gap between the lower pressing block 11 and the top surface of the third piece 12c. The lower pressing block 11 on the left mold 1 and the right mold 2 will gradually drive the vertical rod 14a, and the vertical rod 14a will drive the roller 14b to move horizontally to the side of the separation block 8a. When the roller 14b contacts the bottom surface of the first piece 12a, it will gradually lift the transmission member 12 upwards, and the transmission member 12 will separate the block 8a. The left mold 1 and the right mold 2 are lifted up in the guide member 9. At this stage, the pressing block 11 does not contact the transmission member 12. When the roller 14b contacts the bottom surface of the second piece 12b, the transmission member 12 will not continue to rise. When the second pieces 12b on all the transmission members 12 are in contact with the roller 14b, all the separation blocks 8a will be in the same plane. At this time, the left mold 1 and the right mold 2 continue to approach to the mold closing, thereby cooperating with the upper on the shoe last 4 to form a molding chamber 6. Then, the barrel in the prior art injects the molten plastic into the molding chamber 6 through the injection hole 5, and the molding chamber 6 is cooled. After that, the staff manipulates the two hydraulic power assemblies 15 to open the left mold 1 and the right mold 2. When opening the mold, the left mold 1 and the right mold 2 are first separated from the two sides of the sole 7, and at the same time, the lower pressing block 11 is driven to move horizontally. The lower pressing block 11 also drives the vertical rod 14a and the roller 14b to move. The inclined surface of the lower pressing block 11 at the end with the largest length will first contact the first piece 12a. Before the contact, the roller 14b corresponding to the lower pressing block 11 has been separated from the bottom surface of the second piece 12b. As the lower pressing block 11 moves horizontally, the lower pressing block 11 pushes the first piece 12a. a descends, the first piece 12a will drive the separation block 8a at the end to descend through the second piece 12b and the connecting rod 12d, thereby separating from the bottom surface of the bonded sole 7. As the left mold 1 and the right mold 2 continue to separate horizontally, multiple separation blocks 8a will be separated from the sole 7 in turn, rather than being separated synchronously as in the prior art. Therefore, the pulling force during separation is relatively small, and the damage to the sole 7 is small. After the separation block 8a is separated from the sole 7, the separation block 8a will descend under the action of gravity until the bottom surface of the transmission member 12 contacts the roller 14b, and then it stops descending.

[0031] 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. A sole injection molding machine for producing sports shoes, comprising a left mold (1) and a right mold (2) corresponding to the two sides of a sole (7), a bottom mold (3) corresponding to the bottom surface of the sole (7), and a shoe last (4) inserted into the upper, an injection hole (5) is provided between the left mold (1) and the right mold (2), and a molding chamber (6) is formed when the left mold (1) and the right mold (2) are molded together above the bottom mold (3), and the molten plastic injected into the molding chamber (6) from the injection hole (5) will be bonded to the bottom of the upper to form a sole (7) after solidification, characterized in that: The bottom mold (3) comprises a shading piece (8) corresponding to the contour of the sole (7), and a guide piece (9) slidably connected to the outside of the shading piece (8), the shading piece (8) is composed of a plurality of separation blocks (8a) slidably connected to each other, the shading piece (8) passes through the guide piece (9), and the left mold (1) and the right mold (2) both clamp the side wall of the shading piece (8) when the mold is closed, a mounting seat (10) is fixedly installed at the bottom of the guide piece (9), and lower pressing blocks (11) corresponding to the number and position of the separation blocks (8a) are fixedly installed at the bottom of the left mold (1) and the right mold (2), a transmission piece (12) vertically sliding with the mounting seat (10) is attached to the bottom of the lower pressing block (11), the transmission piece (12) and the separation block (8a) are fixedly connected, a transverse sliding groove (13) is opened inside the transmission piece (12), and an upper lifting piece (14) fixedly installed below the lower pressing block (11) is slidably connected in the transverse sliding groove (13); When the left mold (1) and the right mold (2) move away from each other, the plurality of lower pressing blocks (11) sequentially drive the corresponding transmission members (12) to descend, thereby sequentially separating the separation blocks (8a) from the bottom surface of the solidified sole (7); when the left mold (1) and the right mold (2) move closer to each other and close the mold, the plurality of lower pressing blocks (11) sequentially drive the corresponding transmission members (12) to rise via the upper lifting member (14), thereby sequentially raising the separation blocks (8a) to form the bottom of the molding chamber (6).

2. A sole injection molding machine for sports shoe production according to claim 1, characterized in that: The overall cross section of the lower pressing block (11) is an inverted right-angled trapezoid, with its inclined surface facing downward and located on the side away from the separation block (8a), and the lengths of the multiple lower pressing blocks (11) decrease successively.

3. A sole injection molding machine for sports shoe production according to claim 2, characterized in that: The transmission member (12) comprises a first piece (12a) parallel to the inclined surface of the lower pressing block (11), a second piece (12b) fixedly connected to the side of the first piece (12a) close to the separation block (8a), a third piece (12c) fixedly connected to the side of the first piece (12a) away from the separation block (8a), and a connecting rod (12d) fixedly connected between the third piece (12c) and the separation block (8a), and the transverse sliding groove (13) is provided in the first piece (12a), the second piece (12b) and the third piece (12c).

4. The sole injection molding machine for sports shoes production according to claim 3, characterized in that: The upper lifting member (14) comprises a vertical rod (14a) fixedly connected to the bottom of the lower pressing block (11), and a roller (14b) rotatably connected to the vertical rod (14a), and the vertical rod (14a) passes through the transverse sliding groove (13) and is slidably connected to the transverse sliding groove (13).

5. The sole injection molding machine for sports shoes production according to claim 4, characterized in that: When the outer peripheral surface of the roller (14b) contacts the bottom surface of the second sheet (12b), the lower pressing block (11) does not contact the first sheet (12a); when the lower pressing block (11) contacts the first sheet (12a), the roller (14b) is separated from the bottom surface of the second sheet (12b).

6. The sole injection molding machine for sports shoes production according to claim 1, characterized in that: Hydraulic power components (15) for driving the left mold (1) and the right mold (2) to open and close are also respectively installed on both sides of the mounting seat (10).

7. The sole injection molding machine for sports shoes production according to claim 3, characterized in that: The bottom ends of the second piece (12b) and the third piece (12c) are both fixedly connected to a vertical plate (16), and a guide plate (17) that slides vertically with the vertical plate (16) is fixedly mounted on the mounting seat (10).

8. The sole injection molding machine for sports shoes production according to claim 2, characterized in that: The horizontal length of the first sheet (12a) is greater than the vertical length, and the angle between the first sheet (12a) and the horizontal plane is less than 45°.

Images