A sole injection mold for shoe manufacturing

Abstract

The present invention discloses a sole injection mold for shoe making, which relates to the field of sole molds, and specifically relates to a sole injection mold for shoe making. The mold includes a base, on the top of which an installation frame is mounted. The installation frame is in an inverted U shape. A cylinder is fixedly installed on the installation frame, and the output end of the cylinder is fixedly installed with an upper mold. A middle section mold and a lower mold are arranged below the upper mold. By installing corresponding key pins in the friction groove, during the initial injection process, the friction groove is first filled to ensure the overall qualification rate, and then the excess glue is pushed upward to fill the interior. The pressing frame and the sealing frame are used to ensure the sealing between the upper mold and the middle section mold to avoid burrs. In this way, the excess burrs remain in the friction groove, and then an electric heating cutting wire is used for accurate cutting. Even if there are slight defects, since the burrs are set at the bottom, they will not affect the overall aesthetics and ensure the production qualification rate.

Description

Technical Field

[0001] The present invention relates to the field of sole molds, and particularly to a sole injection mold for shoe manufacturing. Background Art

[0002] For commercially mass-produced soles currently, molds are required for shaping. Generally, the manufacturing processes include injection molding, injection gluing, casting, and slush molding. In the injection gluing method, vulcanized rubber is melted in a barrel and then injected into the sole mold. Under the condition of sealing the upper and lower molds, it is automatically pressed into shape.

[0003] Generally, the working process is as follows: First, the raw materials are dispersed, heated, and melted and then stored in a glue tank. It is connected to a glue head through a pipeline. The mold is divided into an upper mold and a lower mold. After filling a certain amount of glue liquid between the two, the two are closed. There are overflow holes or overflow grooves provided on the upper and lower molds to extrude the excess material.

[0004] After pressing for a period of time, the demolding work is carried out, that is, the upper and lower molds are separated, and then the pressed finished product is taken out.

[0005] However, in the existing molds, due to the setting of structures such as overflow grooves, burrs gather on the side of the sole. But in subsequent processing, the excess burrs need to be cut off. Cutting on the side, if not careful, will slightly affect the overall aesthetics. Moreover, the friction patterns on the bottom are prone to being incomplete during the injection gluing process, affecting the qualification rate.

[0006] Therefore, an injection mold is needed that can improve the qualification rate and effectively avoid mistakes during burr cutting that affect the aesthetics. Summary of the Invention

[0007] In order to solve the above existing problems, the present invention provides a sole injection mold for shoe manufacturing.

[0008] The present invention is realized through the following technical solutions:

[0009] A sole injection mold for shoe making, comprising a base. An installation frame is installed at the top of the base. The installation frame is in an inverted U shape. A cylinder is fixedly installed on the installation frame. The output end of the cylinder is fixedly installed with an upper mold. A middle mold and a lower mold are arranged below the upper mold. A cutting frame is installed on one side of the installation frame. An electric heating cutting wire is installed on the cutting frame. Friction groove patterns are arranged in both the middle mold and the lower mold. Multiple insertion keys are inserted into the lower mold. The multiple insertion keys respectively extend into the corresponding friction groove patterns and are in sliding connection with them in a fitting manner. The bottom end of each group of insertion keys is fixedly connected with a top plate. The bottom end of the top plate is fixedly connected with a first T-shaped sliding rod. Multiple second spring cylinders are fixedly installed at the top of the base. Each first T-shaped sliding rod extends into the corresponding second spring cylinder and is in sliding connection with it. A second spring is sleeved on each first T-shaped sliding rod. A limiting rod is fixedly connected to one side of each first T-shaped sliding rod. A hydraulic cylinder is fixedly installed on the base. The output end of the hydraulic cylinder is fixedly connected with a push rod. The output end of the push rod is fixedly connected with a moving frame. A plurality of moving plates are fixedly connected to one side of the moving frame. Three trapezoidal blocks are fixedly installed on each moving plate. The corresponding trapezoidal blocks are arranged in a fitting manner with the outer wall of the corresponding limiting rod.

[0010] Preferably, a limiting plate is fixedly installed on the base. The multiple moving plates respectively penetrate through the limiting plate and are in sliding connection with it.

[0011] Preferably, a plug board is fixedly connected to one side of the installation frame. The cutting frame is sleeved on the plug board and is in sliding connection with it. A handle is fixedly installed on one side of the cutting frame. The cutting frame is in a U shape. First spring cylinders are respectively fixedly installed on both sides of the cutting frame. A limiting slider is slidably connected in each first spring cylinder. The two ends of the electric heating cutting wire respectively extend into the first spring cylinders and are fixedly connected with the side wall of the corresponding limiting slider. Two first springs are sleeved on the electric heating cutting wire. The first springs are arranged in the first spring cylinders. A bellows is fixedly installed on one side of the cutting frame. A plurality of nozzles are fixedly installed on the bellows. Each nozzle is arranged facing the middle mold.

[0012] Preferably, two fixing plates are fixedly installed on the installation frame. The middle mold is fixedly connected between the two fixing plates. The lower mold is fixed on the base through a bracket. A sealing frame is fixedly installed at the top of the middle mold. A pressing frame is fixedly installed at the bottom of the upper mold. The pressing frame and the sealing frame are arranged corresponding to each other.

[0013] Preferably, a collection box is fixedly installed on the base. A dovetail groove is arranged on the base. A dovetail block is slidably connected in the dovetail groove. A glue injector is fixedly installed at the top of the dovetail block. The glue injector can slide on the top of the base.

[0014] Preferably, a guiding frame is fixedly connected between two sides of the mounting frame. A bottom end of the moving frame is fixedly connected with an L-shaped fixing frame. An L-shaped guiding plate is fixedly installed on the L-shaped fixing frame. An inclined block is sleeved on the L-shaped guiding plate. One side of the inclined block is rotatably connected with a pull rod. A through groove is arranged on the L-shaped guiding plate. The pull rod passes through the through groove and is connected with the Haidong Road thereof. Two stoppers are fixedly installed on the pull rod. An included angle between the two stoppers is 90 degrees. A cavity is arranged in the mounting frame. A second T-shaped sliding rod is slidably connected in the cavity. A bottom end of the second T-shaped sliding rod penetrates out of the cavity and is fixedly connected with a top end of the base. A third spring is sleeved on the second T-shaped sliding rod.

[0015] Compared with the existing technology, the beneficial effects of the present invention are as follows: By installing corresponding plug keys in the friction grooves, during the initial glue injection process, the friction grooves are first filled to ensure the overall qualification rate, and then the excess glue is pushed upward to fill the interior. By using the pressing frame and the sealing frame, it is ensured that the upper mold and the middle mold are sealed to avoid burrs. In this way, the excess burrs remain in the friction grooves, and then accurate cutting is achieved by using the electrothermal cutting wire. Even if there are slight defects, since the burrs are set at the bottom, it will not affect the overall aesthetics and ensure the production qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the first perspective three-dimensional view of the structure of the present invention;

[0017] Figure 2 is the second perspective three-dimensional view and partial enlarged schematic diagram of the structure of the present invention;

[0018] Figure 3 is the third perspective three-dimensional view of the structure of the present invention;

[0019] Figure 4 is the structure of the present invention Figure 1 in the structure diagram of the first spring cylinder;

[0020] Figure 5 is the structure of the present invention Figure 1 in the partial structure diagram of the mounting frame;

[0021] Figure 6 is the structure of the present invention Figure 3 in the structure diagram of the second spring cylinder.

[0022] In the figure: base 1, mounting frame 2, cylinder 3, upper mold 4, middle section mold 5, lower mold 6, cutting frame 7, electrothermal cutting wire 8, hydraulic cylinder 9, ejector rod 10, moving frame 11, moving plate 12, limiting plate 13, friction groove 14, key 15, top plate 16, first T-shaped slide bar 17, second spring cylinder 18, second spring 19, limiting rod 20, trapezoidal block 21, sealing frame 22, pressing frame 23, air box 24, first spring cylinder 25, limiting slider 26, first spring 27, guiding frame 28, collection box 29, glue injector 30, L-shaped fixing frame 31, L-shaped guiding plate 32, through groove 33, inclined block 34, pull rod 35, stop block 36, cavity 37, second T-shaped slide bar 38, third spring 39, insertion plate 40, fixing plate 41. Detailed implementation manner

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and the specific implementation manner:

[0024] As Figures 1 to 6 shown, a sole injection mold for shoe making includes a base 1. An installation frame 2 is installed at the top of the base 1. The installation frame 2 is in an inverted U shape. A cylinder 3 is fixedly installed on the installation frame 2. The output end of the cylinder 3 is fixedly installed with an upper mold 4. A middle section mold 5 and a lower mold 6 are arranged below the upper mold 4. A cutting frame 7 is installed on one side of the installation frame 2. An electrothermal cutting wire 8 is installed on the cutting frame 7. Friction grooves 14 are arranged in both the middle section mold 5 and the lower mold 6. Multiple groups of keys 15 are inserted into the lower mold 6. Each group of keys 15 extends into the corresponding friction groove 14 and is in sliding connection with it in a fitting manner. The bottom end of each key 15 in each group is fixedly connected with a top plate 16. The bottom end of the top plate 16 is fixedly connected with a first T-shaped slide bar 17. A plurality of second spring cylinders 18 are fixedly installed at the top of the base 1. Each first T-shaped slide bar 17 extends into the corresponding second spring cylinder 18 and is in sliding connection with it. A second spring 19 is sleeved on each first T-shaped slide bar 17. A limiting rod 20 is fixedly connected to one side of each first T-shaped slide bar 17. A hydraulic cylinder 9 is fixedly installed on the base 1. The output end of the hydraulic cylinder 9 is fixedly connected with an ejector rod 10. The output end of the ejector rod 10 is fixedly connected with a moving frame 11. A plurality of moving plates 12 are fixedly connected to one side of the moving frame 11. Three trapezoidal blocks 21 are fixedly installed on each moving plate 12. The corresponding trapezoidal blocks 21 are arranged in a fitting manner with the outer wall of the corresponding limiting rod 20. When working, first keep Figure 1In the shown state, then move the glue injection machine 30 to fill the inside with glue liquid, and then start the cylinder 3 to press downwards, so that the upper mold 4 and the middle section mold 5 complete the mold closing work. At this time, since the glue liquid is added to the inside first, the glue liquid can effectively and evenly flow into each friction groove 14, thus maintaining the qualified rate of the product. When the mold closing is completed, start the hydraulic cylinder 9 at this time, so that the hydraulic cylinder 9 drives the ejector rod 10 to move, so that the multiple moving plates 12 also move accordingly. In this way, the trapezoidal blocks 21 at the bottom of each corresponding group will first contact the limiting rod 20. At this time, the glue liquid fills in the multiple friction grooves 14. With continuous movement, the glue liquid is pushed upwards and filled between the upper mold 4 and the middle section mold 5. When it moves to the middle trapezoidal block 21, the glue liquid has been extruded, so that the cutting work can be carried out. At this time, the middle section mold 5 is separated from the lower mold 6. After the cutting is completed, when the trapezoidal block 21 at the highest position contacts the limiting rod 20, the middle section mold 5 and the lower mold 6 are closed, and the cylinder 3 retracts, so that the upper mold 4 and the middle section mold 5 are separated, thus realizing the demolding work, and the operation is simple and convenient.

[0025] A limiting plate 13 is fixedly installed on the base 1. The multiple moving plates 12 respectively penetrate through the limiting plate 13 and are slidably connected thereto. The limiting plate 13 plays a limiting role.

[0026] One side of the mounting frame 2 is fixedly connected with an insertion plate 40. The cutting frame 7 is sleeved on the insertion plate 40 and is slidably connected thereto. A handle is fixedly installed on one side of the cutting frame 7. The cutting frame 7 is in a U shape. Two first spring cylinders 25 are respectively fixedly installed on both sides of the cutting frame 7. A limiting slider 26 is slidably connected in each first spring cylinder 25. Both ends of the electrothermal cutting wire 8 respectively extend into the first spring cylinder 25 and are fixedly connected to the side wall of the corresponding limiting slider 26. Two first springs 27 are sleeved on the electrothermal cutting wire 8. The first springs 27 are arranged in the first spring cylinders 25. A wind box 24 is fixedly installed on one side of the cutting frame 7. A plurality of nozzles are fixedly installed on the wind box 24. Each nozzle is arranged towards the middle section mold 5. When the cutting work is carried out, pull the handle to make the cutting frame 7 move. The insertion plate 40 plays a guiding role, enabling it to move smoothly. The first springs 27 in the first spring cylinders 25 enable the electrothermal cutting wire 8 to have a certain telescopic ability and can stably fit and move below the middle section mold 5. The electrothermal cutting wire 8 is in an energized state and generates heat when energized, realizing the cutting of the excess solidified glue liquid. After the cutting is completed, the wind blown by the wind box 24 can blow the cut particles into the collection box 29 for collection, thus completing the recycling work.

[0027] Two fixing plates 41 are fixedly installed on the mounting bracket 2, and a middle-section mold 5 is fixedly connected between the two fixing plates 41. The lower mold 6 is fixed on the base 1 through a bracket. A sealing frame 22 is fixedly installed at the top of the middle-section mold 5, and a pressing frame 23 is fixedly installed at the bottom of the upper mold 4. The pressing frame 23 is arranged corresponding to the sealing frame 22. The outer surfaces of the pressing frame 23 and the sealing frame 22 are polished by high-precision machining to avoid burrs to the greatest extent. At the same time, compared with other types of molds, the area of high-precision machining is small, effectively reducing costs.

[0028] A collection box 29 is fixedly installed on the base 1. A dovetail groove is arranged on the base 1, and a dovetail block is slidably connected in the dovetail groove. The top of the dovetail block is fixedly installed with a glue injector 30. The glue injector 30 can slide on the top of the base 1. The collection box 29 is used to collect the solidified particles after cutting, thereby reducing the time of subsequent recycling and crushing work. The glue injector 30 can perform mobile gluing and reset after gluing is completed to ensure the normal progress of the subsequent mold forming work.

[0029] A guide frame 28 is fixedly connected between the two sides of the mounting frame 2. A bottom end of the moving frame 11 is fixedly connected with an L-shaped fixing frame 31. An L-shaped guide plate 32 is fixedly installed on the L-shaped fixing frame 31. An inclined block 34 is sleeved on the L-shaped guide plate 32. One side of the inclined block 34 is rotatably connected with a pull rod 35. A through groove 33 is arranged on the L-shaped guide plate 32. The pull rod 35 passes through the through groove 33 and is connected with it. Two stoppers 36 are fixedly installed on the pull rod 35. The included angle between the two stoppers 36 is ninety degrees. A cavity 37 is arranged in the mounting frame 2. A second T-shaped sliding rod 38 is slidably connected in the cavity 37. A bottom end of the second T-shaped sliding rod 38 passes out of the cavity 37 and is fixedly connected with a top end of the base 1. A third spring 39 is sleeved on the second T-shaped sliding rod 38. Before cutting work is carried out, the pull rod 35 should be rotated ninety degrees first so that the stopper 36 close to the hydraulic cylinder 9 can smoothly pass through the through groove 33. After passing through, the pull rod 35 is rotated again so that the stopper is in a limiting state and cannot pass through the through groove 33. In this way, as the hydraulic cylinder 9 moves, when the trapezoidal block 21 in the middle contacts and moves with the limiting rod 20 and remains stable, at this time, the insertion key 15 is extruding the redundant solidified glue liquid and is kept horizontal with the top of the lower mold 6. At the same time, under the limitation of the stopper 36 close to the hydraulic cylinder 9, the inclined block 34 contacts the guide frame 28, and the guide frame 28 is lifted upward, that is, the whole mounting frame 2 is lifted upward, so that the upper mold 4 and the middle section mold 5 keep synchronous actions, so as to keep the internal stability. And the redundant solidified glue liquid at the bottom will protrude from the bottom of the middle section mold 5, so as to facilitate the smooth cutting of the electrothermal cutting wire 8. After the cutting is completed, as the hydraulic cylinder 9 continues to move, the trapezoidal block 21 closest to the hydraulic cylinder 9 will contact the limiting rod 20, and the first T-shaped sliding rod 17 will continue to rise and displace. The insertion key 15 will be ejected out of the friction groove 14 at the lower mold 6. At this time, the pull rod 35 is rotated to the state shown in Figure 2 . In this way, under the elastic reset of the third spring 39 in the cavity 37, the inclined block 34 is reset without limitation, so that it does not have the ability to push the guide frame 28, so that the mounting frame 2 descends and resets. After descending and resetting, due to the ejection of the insertion key 15, it is ejected into the friction groove 14 of the middle section mold 5, and then the air cylinder 3 is reset, so as to realize the demolding work, and the solidified sole model inside is ejected from the bottom.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A sole injection mold for shoe manufacturing, comprising a base (1). An installation frame (2) is installed at the top of the base (1). The installation frame (2) is in an inverted U shape. A cylinder (3) is fixedly installed on the installation frame (2). The output end of the cylinder (3) is fixedly installed with an upper mold (4). A middle section mold (5) and a lower mold (6) are arranged below the upper mold (4). A cutting frame (7) is installed on one side of the installation frame (2). An electric heating cutting wire (8) is installed on the cutting frame (7). Friction texture grooves (14) are arranged in both the middle section mold (5) and the lower mold (6). It is characterized in that: A plurality of key inserts (15) are inserted into the lower mold (6). The plurality of key inserts (15) respectively extend into corresponding friction groove patterns (14) and are in sliding connection therewith in a fitting manner. The bottom end of each key insert (15) in each group is fixedly connected to a top plate (16). The bottom end of the top plate (16) is fixedly connected to a first T-shaped sliding rod (17). A plurality of second spring cylinders (18) are fixedly installed at the top end of the base (1). Each first T-shaped sliding rod (17) extends into a corresponding second spring cylinder (18) and is in sliding connection therewith. A second spring (19) is sleeved on each first T-shaped sliding rod (17). A limiting rod (20) is fixedly connected to one side of each first T-shaped sliding rod (17). A hydraulic cylinder (9) is fixedly installed on the base (1). The output end of the hydraulic cylinder (9) is fixedly connected to a push rod (10). The output end of the push rod (10) is fixedly connected to a moving frame (11). A plurality of moving plates (12) are fixedly connected to one side of the moving frame (11). Three trapezoidal blocks (21) are fixedly installed on each moving plate (12). The corresponding trapezoidal blocks (21) are in fitting contact with the outer wall of the corresponding limiting rod (20).

2. The sole injection mold for shoe making according to claim 1, characterized in that: A limiting plate (13) is fixedly installed on the base (1). The plurality of moving plates (12) respectively penetrate through the limiting plate (13) and are in sliding connection therewith.

3. The sole injection mold for shoe making according to claim 1, characterized in that: An insertion plate (40) is fixedly connected to one side of the mounting frame (2). The cutting frame (7) is sleeved on the insertion plate (40) and is in sliding connection therewith. A handle is fixedly installed on one side of the cutting frame (7). The cutting frame (7) is in a U shape. First spring cylinders (25) are respectively fixedly installed on both sides of the cutting frame (7). A limiting slider (26) is slidably connected in each first spring cylinder (25). Both ends of the electrothermal cutting wire (8) respectively extend into the first spring cylinders (25) and are fixedly connected to the side walls of the corresponding limiting sliders (26). Two first springs (27) are sleeved on the electrothermal cutting wire (8). The first springs (27) are arranged in the first spring cylinders (25). A bellows (24) is fixedly installed on one side of the cutting frame (7). A plurality of nozzles are fixedly installed on the bellows (24). Each nozzle faces the middle mold (5).

4. The sole injection mold for shoe making according to claim 1, characterized in that: Two fixing plates (41) are fixedly installed on the mounting frame (2). A middle mold (5) is fixedly connected between the two fixing plates (41). The lower mold (6) is fixed to the base (1) through a bracket. A sealing frame (22) is fixedly installed at the top end of the middle mold (5). A pressing frame (23) is fixedly installed at the bottom of the upper mold (4). The pressing frame (23) is arranged corresponding to the sealing frame (22).

5. The sole injection mold for shoe manufacturing according to claim 1, wherein: A collection box (29) is fixedly installed on the base (1). A dovetail groove is arranged on the base (1). A dovetail block is slidably connected in the dovetail groove. A glue injector (30) is fixedly installed at the top end of the dovetail block. The glue injector (30) can slide on the top end of the base (1).

6. The sole injection mold for shoe making according to claim 1, characterized in that: A guide frame (28) is fixedly connected between two sides of the mounting frame (2). A bottom end of the moving frame (11) is fixedly connected with an L-shaped fixing frame (31). An L-shaped guide plate (32) is fixedly installed on the L-shaped fixing frame (31). An inclined block (34) is sleeved on the L-shaped guide plate (32). One side of the inclined block (34) is rotatably connected with a pull rod (35). A through groove (33) is arranged on the L-shaped guide plate (32). The pull rod (35) passes through the through groove (33) and is connected with it. Two stoppers (36) are fixedly installed on the pull rod (35). An included angle between the two stoppers (36) is 90 degrees. A cavity (37) is arranged in the mounting frame (2). A second T-shaped sliding rod (38) is slidably connected in the cavity (37). A bottom end of the second T-shaped sliding rod (38) penetrates out of the cavity (37) and is fixedly connected with a top end of the base (1). A third spring (39) is sleeved on the second T-shaped sliding rod (38).

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