Sole glue injection mold for shoemaking

Abstract

The invention discloses a shoe sole glue injection mold for shoemaking, and relates to the field of shoe sole molds, in particular to a shoe sole glue injection mold for shoemaking, which comprises a base, a mounting frame is mounted at the top end of the base, the mounting frame is in an inverted U shape, an air cylinder is fixedly mounted on the mounting frame, and an upper mold is fixedly mounted at the output end of the air cylinder; according to the device, the corresponding insertion keys are installed in the friction grain grooves, in the preliminary glue injection process, the friction grain grooves are filled firstly, the overall qualification rate is ensured, then redundant glue liquid is ejected upwards to fill the interior, the pressing frame and the sealing frame are utilized, and the friction grain grooves are sealed through the pressing frame and the sealing frame. Sealing between the upper die and the middle die is guaranteed, burrs are avoided, the redundant burrs are left in the friction grain grooves, then accurate cutting is achieved through the electric heating cutting line, even if slight flaws appear, the burrs are arranged at the bottom, the overall attractiveness cannot be affected, and the production qualification rate is guaranteed.

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, molds are required for molding. The general 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] The general working process is as follows: First, the raw materials are dispersed, heated, and melted, and then stored in a glue tank. They are 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. Overflow holes or overflow grooves are 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 accumulate on the side of the sole. But in subsequent processing, the excess burrs need to be cut off. If the cutting is not careful on the side, it will slightly affect the overall aesthetics. Moreover, the friction patterns on the bottom are prone to incomplete situations 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: A sole injection mold for shoe manufacturing, 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 provided in both the middle mold and the lower mold. Multiple key inserts are inserted into the lower mold. The multiple key inserts 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 key inserts 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. Multiple 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.

[0009] 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.

[0010] 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 wind box is fixedly installed on one side of the cutting frame. Multiple spray heads are fixedly installed on the wind box. Each spray head is arranged towards the middle mold.

[0011] 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 in a corresponding manner.

[0012] Preferably, a collection box is fixedly installed on the base. A dovetail groove is provided 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.

[0013] 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 mounted 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 L-shaped guiding plate. Two stoppers are fixedly mounted 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.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By installing corresponding key inserts in the friction grooves, during the initial glue injection process, the friction grooves are first filled to ensure the overall qualification rate. 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 using the electrothermal cutting wire. Even if there are slight defects, since the burrs are set at the bottom, they will not affect the overall appearance and ensure the production qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the first perspective three-dimensional view of the structure of the present invention; Figure 2 is the second perspective three-dimensional view and the partial enlarged schematic diagram of the structure of the present invention; Figure 3 is the third perspective three-dimensional view of the structure of the present invention; Figure 4 is the structure of the present invention Figure 1 in the structure diagram of the first spring cylinder; Figure 5 is the structure of the present invention Figure 1 in the partial structure diagram of the mounting frame; Figure 6 is the structure of the present invention Figure 3 in the structure diagram of the second spring cylinder.

[0016] 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, inserting plate 40, fixing plate 41. Detailed implementation manner

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and the specific implementation manner: As Figures 1 to 6 shown, a sole injection mold for shoe making, including a base 1, a mounting frame 2 is installed at the top end of the base 1, the mounting frame 2 is in an inverted U shape, a cylinder 3 is fixedly installed on the mounting 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 mounting 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, and 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 end 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, and 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 injector 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 first added inside, the glue liquid can effectively and evenly flow into each friction groove 14, thereby 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 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 at this time, 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.

[0018] 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.

[0019] 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. One side of the cutting frame 7 is fixedly installed with a handle. 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 electric heating cutting wire 8 respectively extend into the first spring cylinder 25 and are fixedly connected with the side wall of the corresponding limiting slider 26. Two first springs 27 are sleeved on the electric heating cutting wire 8. The first springs 27 are arranged in the first spring cylinders 25. One side of the cutting frame 7 is fixedly installed with an air box 24. A plurality of nozzles are fixedly installed on the air box 24. Each nozzle is arranged facing 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 to enable it to move smoothly. The first springs 27 in the first spring cylinders 25 enable the electric heating cutting wire 8 to have a certain telescopic ability and can stably fit and move below the middle-section mold 5. The electric heating cutting wire 8 is in an energized state and generates heat under the energized condition to cut the redundant solidified glue liquid. After the cutting is completed, the air blown out by the air box 24 can blow the cut particles into the collection box 29 for collection, thus completing the recycling work.

[0020] 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.

[0021] A collection box 29 is fixedly installed on the base 1. A dovetail groove is provided on the base 1. 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 being cut, thereby reducing the time for 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.

[0022] A guide frame 28 is fixedly connected between the two sides of the mounting frame 2. The 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 90 degrees. A cavity 37 is arranged in the mounting frame 2. A second T-shaped slide rod 38 is slidably connected in the cavity 37. The bottom end of the second T-shaped slide rod 38 passes out of the cavity 37 and is fixedly connected with the top end of the base 1. A third spring 39 is sleeved on the second T-shaped slide rod 38. Before cutting work, the pull rod 35 should be rotated 90 degrees first so that the stopper 36 close to the hydraulic cylinder 9 can pass through the through groove 33 smoothly. 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 keeping horizontal with the top of the lower mold 6. At the same time, under the limit 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 move synchronously, so as to maintain 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 slide rod 17 will continue to rise and displace. The insertion key 15 will eject 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 cylinder 3 is reset, so as to realize the demolding work, and the solidified sole model inside is ejected from the bottom.

[0023] 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), a mounting frame (2) being mounted on the top of the base (1), the mounting frame (2) being in an inverted U-shape, a cylinder (3) being fixedly mounted on the mounting frame (2), an upper mold (4) being fixedly mounted on the output end of the cylinder (3), a middle mold (5) and a lower mold (6) being arranged below the upper mold (4), a cutting frame (7) being mounted on one side of the mounting frame (2), an electric heating cutting wire (8) being mounted on the cutting frame (7), friction grooves (14) being arranged inside the middle mold (5) and the lower mold (6), characterized in that: A plurality of groups of insertion keys (15) are inserted into the lower mold (6), and the plurality of groups of insertion keys (15) are respectively inserted into the corresponding friction grooves (14) and are slidably connected thereto. The bottom end of each group of insertion keys (15) is fixedly connected to a top plate (16), and the bottom end of the top plate (16) is fixedly connected to a first T-shaped slide bar (17). A plurality of second spring cylinders (18) are fixedly installed on the top end of the base (1), and each first T-shaped slide bar (17) is inserted into the corresponding second spring cylinder (18) and is slidably connected thereto. A first spring cylinder (18) is sleeved on each first T-shaped slide bar (17). A second spring (19), one side of each first T-shaped sliding rod (17) is fixedly connected to a limiting rod (20), a hydraulic cylinder (9) is fixedly mounted on the base (1), an output end of the hydraulic cylinder (9) is fixedly connected to a push rod (10), an output end of the push rod (10) is fixedly connected to a moving frame (11), one side of the moving frame (11) is fixedly connected to a plurality of moving plates (12), each moving plate (12) is fixedly mounted with three trapezoidal blocks (21), and corresponding trapezoidal blocks (21) are arranged in close contact with the outer wall of the corresponding limiting rod (20).

2. The sole injection mold for shoemaking according to claim 1, characterized in that: A limiting plate (13) is fixedly mounted on the base (1), and a plurality of movable plates (12) respectively penetrate the limiting plate (13) and are slidably connected thereto.

3. The sole injection mold for shoemaking according to claim 1, characterized in that: A plug plate (40) is fixedly connected to one side of the mounting frame (2), the cutting frame (7) is sleeved on the plug plate (40) and slidably connected thereto, a handle is fixedly installed on one side of the cutting frame (7), the cutting frame (7) is U-shaped, first spring cylinders (25) are fixedly installed on both sides of the cutting frame (7), each first spring cylinder (25) is slidably connected to a limit slider (26), two ends of the electric heating cutting wire (8) are respectively extended into the first spring cylinder (25) and fixedly connected to the corresponding side wall of the limit slider (26), two first springs (27) are sleeved on the electric heating cutting wire (8), the first springs (27) are arranged in the first spring cylinder (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), and each nozzle is arranged toward the middle section mold (5).

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

5. The sole injection mold for shoemaking according to claim 1, characterized in that: A collecting box (29) is fixedly mounted on the base (1), a dovetail groove is provided on the base (1), a dovetail block is slidably connected in the dovetail groove, a glue injection machine (30) is fixedly mounted on the top of the dovetail block, and the glue injection machine (30) is capable of sliding on the top of the base (1).

6. The sole injection mold for shoemaking according to claim 1, characterized in that: A guide frame (28) is fixedly connected between the two sides of the mounting frame (2), an L-shaped mounting frame (31) is fixedly connected to the bottom end of the movable frame (11), an L-shaped guide plate (32) is fixedly installed on the L-shaped mounting frame (31), an inclined block (34) is sleeved on the L-shaped guide plate (32), a pull rod (35) is rotatably connected to one side of the inclined block (34), a through slot (33) is provided on the L-shaped guide plate (32), the pull rod (35) passes through the through slot (33) and is connected to the Haidong Road, two stoppers (36) are fixedly installed on the pull rod (35), and the angle between the two stoppers (36) is 90 degrees, a cavity (37) is provided in the mounting frame (2), a second T-shaped slide rod (38) is slidably connected in the cavity (37), the bottom end of the second T-shaped slide rod (38) passes through the cavity (37) and is fixedly connected to the top end of the base (1), and a third spring (39) is sleeved on the second T-shaped slide rod (38).

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