An improved heel-forming mold

Abstract

The utility model discloses an improved back heel shaping mould, including the fixing frame, the both sides of fixing frame are equipped with the connecting arm that extends downwards respectively, still include a by the metal material of having the heat conductivity of making the mould device, the mould device is set up to U character shape, and the bottom half of mould device encloses and forms the hot pressing cavity, and the both sides of mould device are connected to corresponding connecting arm respectively, wherein, the mould device is equipped with a plurality of accommodation holes, and each accommodation hole is along the width direction of mould device and is set up in extension to distribution interval along the contour direction of mould device, and the inside of each accommodation hole is equipped with a heating component respectively, the hot pressing cavity is detachably installed with a heat conduction adhesive sheet, and the heat conduction adhesive sheet is close to the inner wall of hot pressing cavity, and cooperates with the heat radiation of mould device. Compared with the traditional back heel shaping mould, the shaping mould of the scheme has the advantages of low maintenance cost, fast heating, strong reliability.

Description

Technical Field

[0001] This utility model relates to the field of shoemaking equipment technology, and in particular to an improved heel shaping mold. Background Technology

[0002] A heel shaping machine is an automated processing equipment specifically designed for footwear manufacturing (especially the heel area). It is mainly used to perform hot pressing, shaping, or reinforcement treatment on the heel of the shoe to ensure that the shape of the heel is stable, fits the foot shape, and improves the comfort and durability of the finished shoe.

[0003] Traditional heel shaping molds typically have their heating structure located inside the thermally conductive adhesive mold. For example, the Chinese utility model patent with application number "CN201620226244.6" and patent title "Heating Adhesive Module for Heel Shaping Machine" includes a curved section and two extended sections. The curved section has two opposing ends, and the two extended sections are located at both ends of the curved section. A first conductive block is embedded inside the curved section and located in the middle of the curved section. The first conductive block is a single-piece structure and has a first end and a second end. The first conductive block includes one or more... The first conductive block has one or more receiving holes extending from the end face of the first end toward the second end of the first conductive block; two second conductive blocks are respectively embedded inside the two extension sections, each second conductive block having a first end and a second end opposite to each other and including one or more receiving holes extending from the end face of the first end toward the second end of the second conductive block; and a plurality of heating components are electrically connected to each other and respectively pass through one or more receiving holes in the first conductive block and one or more receiving holes in each of the second conductive blocks.

[0004] This type of heated adhesive module has the following disadvantages: 1. The spaced-out built-in heating components heat the thermally conductive silicone, resulting in a small heat radiation area, slow heating, and high energy consumption. In addition, it also leads to uneven heating of the pressed surface of the thermally conductive silicone, resulting in poor hot pressing molding effect; 2. The thermally conductive silicone will carbonize after long-term use and needs to be replaced in time. However, the traditional thermally conductive silicone with built-in heating components requires the replacement of the entire module when it is replaced, resulting in high maintenance costs; 3. The thermally conductive silicone is relatively thick, resulting in long preheating time, low energy efficiency, and low processing efficiency. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an improved heel shaping mold to solve the above problems.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an improved heel shaping mold, including a fixed frame, with connecting arms extending downward on both sides of the fixed frame, and a molding device made of a thermally conductive metal material. The molding device is U-shaped, with its bottom semi-enclosing a hot-pressing cavity. The two sides of the molding device are connected to the corresponding connecting arms. The molding device has multiple receiving holes, each extending along the width direction of the molding device and spaced apart along the contour direction of the molding device. Each receiving hole has a heating element inside. A thermally conductive sheet is detachably installed inside the hot-pressing cavity, adhering tightly to the inner wall of the hot-pressing cavity and cooperating with the thermal radiation of the molding device.

[0007] In a further technical solution, the molding device includes two aluminum mold parts, which are symmetrically arranged and connected to corresponding connecting arms. The connection points of the two aluminum mold parts are respectively formed with shaft joints, and the two shaft joints are rotatably connected by a rotating shaft screw.

[0008] In a further technical solution, a bearing seat is welded and fixed to the outer side of each of the two aluminum mold parts. The bearing seat is connected to a movable connector via a rotating shaft. The other side of the movable connector is rotatably connected to the end of the corresponding connecting arm via another rotating shaft.

[0009] In a further technical solution, the aluminum mold has multiple through-holes with negative pressure holes, which are arranged in an array on the aluminum mold. A thermally conductive film covers each negative pressure hole. A vacuum block is provided on the outer side of the aluminum mold, and a vacuum chamber is provided on the inner side of the vacuum block. The vacuum block is fixed to the aluminum mold, and the vacuum chamber is connected to each negative pressure hole. The vacuum block has an air extraction port connected to the vacuum chamber. The air extraction port has a connector, and the vacuum block is connected to a vacuum pumping device through the connector pipe. Under the negative pressure of each negative pressure hole, the thermally conductive film is tightly attached to the inner wall of the aluminum mold.

[0010] In a further technical solution, the inner side of the vacuum block matches the aluminum mold, the inner side of the vacuum block is hollowed out to form a cavity, the edge of the vacuum block is airtightly connected to the outer wall of the aluminum mold by welding, and the cavity and the outer wall of the aluminum mold surround each other to form a vacuum chamber.

[0011] In a further technical solution, protruding lugs are formed on both the front and rear sides of the middle position of the thermal conductive film. The lugs have through holes, and the lugs on both sides are respectively fitted onto the rotating shaft screw to fix and install the thermal conductive silicone.

[0012] In a further technical solution, the bottom surfaces of the two aluminum mold parts are respectively provided with connection holes; the two sides of the heat-conducting film are respectively laid on the inner wall of the hot pressing cavity, and the two sides of the heat-conducting film are respectively turned outward to the bottom surface of the corresponding aluminum mold part to form a flange, and the flange is fastened to the corresponding connection hole by bolts.

[0013] In a further technical solution, the thickness of the thermally conductive film is 6mm-8mm.

[0014] In a further technical solution, the spacing between two adjacent receiving holes and heating components is 8mm-16mm.

[0015] In a further technical solution, the heating component includes an electric heating tube, which is embedded in the receiving hole, and the gap between the two is filled with a high-temperature resistant thermally conductive adhesive.

[0016] The advantages of this invention compared to the prior art after adopting the above structure are:

[0017] 1. This utility model provides a molding die formed by combining a metal molding device and a heat-conducting film. A heating component is set inside the molding device, and the heat is conducted to the heat-conducting film through the molding device to realize the hot pressing molding process. The replaceable heat-conducting film greatly reduces the maintenance cost of the molding die.

[0018] 2. The two-section mold device and the fixed frame with movable connecting parts work together to enable the hot pressing cavity to have self-adaptive closing ability when the mold device is performing hot pressing work. This can prevent wrinkles from forming on the heel during the hot pressing process and further improve the hot pressing forming effect of the heel shaping mold.

[0019] 3. The aluminum mold with a negative pressure adsorption mechanism can tightly adsorb the heat-conducting film into the hot pressing cavity and adhere it to the inner wall of the aluminum mold, making the heat conduction efficiency higher and the temperature of the heat-conducting film more uniform, further improving the reliability and working stability of the mold device.

[0020] 4. Thanks to the mold device with built-in heating components and the design of detachable heat-conducting film, the thickness of the heat-conducting film can be reduced by less than 10mm, making its heat conduction efficiency faster, further shortening the preheating time, and reducing the energy consumption of the heel shaping mold. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0024] Figure 3 This is an exploded view of the present invention. Detailed Implementation

[0025] The following are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention.

[0026] like Figures 1 to 3 As shown, an improved heel shaping mold includes a fixing frame 1, with connecting arms 11 extending downward on both sides of the fixing frame 1, and a molding device made of a thermally conductive metal material. The molding device is U-shaped, with its bottom semi-enclosing a hot-pressing cavity 40. The two sides of the molding device are connected to the corresponding connecting arms 11. The molding device has multiple receiving holes 41, each extending along the width direction of the molding device and spaced apart along the contour direction of the molding device. Each receiving hole 41 has a heating element 7 inside. A thermally conductive sheet 5 is detachably installed inside the hot-pressing cavity 40, adhering tightly to the inner wall of the hot-pressing cavity 40 and cooperating with the thermal radiation of the molding device.

[0027] The molding die is formed by combining a metal molding device and a heat-conducting sheet 5. A heating component 7 is installed inside the molding device. The molding device conducts heat to the heat-conducting sheet 5 to achieve hot pressing. The replaceable heat-conducting sheet 5 greatly reduces the maintenance cost of the molding die.

[0028] The molding device includes two aluminum mold parts 4, which are symmetrically arranged and connected to corresponding connecting arms 11. The connection points of the two aluminum mold parts 4 are respectively formed with shaft joints 43, and the two shaft joints 43 are rotatably connected by a rotating shaft screw 44. A shaft seat 3 is welded and fixed to the outer side of the two aluminum mold parts 4, and the shaft seat 3 is connected to a movable connector 2 through a rotating shaft. The other side of the movable connector 2 is rotatably connected to the end of the corresponding connecting arm 11 through another rotating shaft.

[0029] The two-section mold device works in conjunction with the fixed frame 1 with movable connector 2, so that the hot pressing cavity 40 has adaptive closing ability when the mold device is performing hot pressing, which can prevent the shoe heel from wrinkling during the hot pressing process and further improve the hot pressing forming effect of the heel shaping mold.

[0030] In this embodiment, the rotating axes are arranged in parallel. In actual application, the heel shaping mold moves downward under the drive of the machine, causing the hot pressing cavity 40 to move downward and cover the heel of the target shoe material. As it continues to move downward, the heel abuts against the hinge between the two aluminum molds 4, causing the bottoms of the aluminum molds 4 on both sides to close inward, and driving the hot pressing cavity 40 and the heat-conducting film 5 to further press against the heel, thereby preventing wrinkles from forming on the heel and further improving the hot pressing effect. After the hot pressing process, under the action of gravity and the elasticity of the heat-conducting film 5, the two aluminum molds 4 and the hot pressing cavity 40 open and return to their initial positions.

[0031] Specifically, the aluminum mold 4 has multiple through-holes 42, which are arranged in an array. The thermally conductive film 5 covers each of the negative pressure holes 42. A vacuum block 6 is provided on the outer side of the aluminum mold 4, and a vacuum chamber 60 is provided on the inner side of the vacuum block 6. The vacuum block 6 is fixed to the aluminum mold 4, and the vacuum chamber 60 is connected to each of the negative pressure holes 42. The vacuum block 6 has an air extraction port connected to the vacuum chamber 60. The air extraction port has a connector 61. The vacuum block 6 is connected to a vacuum pump through the connector 61. Under the negative pressure of each negative pressure hole 42, the thermally conductive film 5 is tightly attached to the inner wall of the aluminum mold 4.

[0032] Specifically, the inner side of the vacuum block 6 matches the aluminum mold 4, the hollowing out of the inner side of the vacuum block 6 forms a cavity, the edge of the vacuum block 6 is airtightly connected to the outer wall of the aluminum mold 4 by welding, and the cavity and the outer wall of the aluminum mold 4 surround each other to form a vacuum chamber 60.

[0033] The aluminum mold 4 equipped with a negative pressure adsorption mechanism can tightly adsorb the heat-conducting film 5 into the hot pressing cavity 40 and adhere it to the inner wall of the aluminum mold 4, thereby improving the heat conduction efficiency, making the temperature of the heat-conducting film 5 more uniform, and further improving the reliability and working stability of the mold device.

[0034] An electric valve is also provided between the connector 61 and the external vacuum device. After the thermal conductive film 5 is assembled, the vacuum device is started to evacuate the vacuum chamber 60, so that the thermal conductive film 5 is tightly attached to the inner wall of the aluminum mold 4, avoiding gaps between the two, making the heat radiation structure more stable and the heating effect better.

[0035] Specifically, protruding lugs 51 are formed on both the front and rear sides of the middle position of the thermally conductive sheet 5. The lugs 51 have through holes, and the lugs 51 on both sides are respectively fitted onto the rotating shaft screw 44 to fix and install the thermally conductive silicone. The bottom end faces of the two aluminum mold parts 4 are respectively provided with connecting holes 49; the two side sections of the thermally conductive sheet 5 are respectively laid on the inner wall of the hot pressing cavity 40, and the two sides of the thermally conductive sheet 5 are respectively turned outward to the bottom end face of the corresponding aluminum mold part 4 to form a bottom end face, and are connected to the corresponding connecting holes 49 by bolts through 52.

[0036] The thermal conductive sheet 5 is fixed with bolts, making replacement convenient. The three-point fixing structure reduces the gap between the thermal conductive sheet 5 and the assembly, providing conditions for negative pressure adsorption.

[0037] Specifically, the thickness of the thermal conductive film 5 is 7mm.

[0038] Specifically, the spacing between two adjacent receiving holes 41 is 8mm.

[0039] Specifically, the heating assembly includes an electric heating element, which is embedded in the receiving hole 41, and the gap between the two is filled with a high-temperature resistant thermally conductive adhesive.

[0040] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An improved heel shaping mold, comprising a fixing frame (1), wherein the fixing frame (1) has downwardly extending connecting arms (11) on both sides, characterized in that: It also includes a mold device made of a thermally conductive metal material, the mold device is U-shaped, the bottom of the mold device is partially surrounded to form a hot pressing cavity (40), and the two sides of the mold device are respectively connected to the corresponding connecting arms (11); The molding device has multiple receiving holes (41), each receiving hole (41) extends along the width direction of the molding device and is distributed at intervals along the outline direction of the molding device. Each receiving hole (41) is provided with a heating element (7). A heat-conducting film (5) is detachably installed in the hot pressing cavity (40). The heat-conducting film (5) is tightly attached to the inner wall of the hot pressing cavity (40) and cooperates with the heat radiation of the molding device.

2. The improved heel shaping mold according to claim 1, characterized in that: The molding device includes two aluminum mold parts (4), which are symmetrically arranged and connected to the corresponding connecting arms (11). The connection points of the two aluminum mold parts (4) are respectively formed with shaft joints (43), and the two shaft joints (43) are rotatably connected by a rotating shaft screw (44).

3. An improved kickaback shaping mold according to claim 2, wherein: A bearing seat (3) is welded and fixed to the outer side of each of the two aluminum mold parts (4). The bearing seat (3) is connected to a movable connector (2) through a rotating shaft. The other side of the movable connector (2) is rotatably connected to the end of the corresponding connecting arm (11) through another rotating shaft.

4. An improved heel shaping mold according to claim 2, characterized in that: The aluminum mold (4) has multiple negative pressure holes (42) that penetrate both inside and outside. Each negative pressure hole (42) is arranged in an array on the aluminum mold (4). The thermally conductive film (5) covers each negative pressure hole (42). A vacuum block (6) is provided on the outside of the aluminum mold (4). A vacuum chamber (60) is provided on the inside of the vacuum block (6). The vacuum block (6) is fixed to the aluminum mold (4), and the vacuum chamber (60) is connected to each negative pressure hole (42). The vacuum block (6) has an air extraction port that connects to the vacuum chamber (60). The air extraction port has a connector (61). The vacuum block (6) is connected to a vacuum pumping device through the connector (61). Under the negative pressure of each negative pressure hole (42), the thermally conductive film (5) is tightly attached to the inner wall of the aluminum mold (4).

5. An improved heel shaping mold according to claim 4, characterized in that: The inner side of the vacuum block (6) matches the aluminum mold (4), the inner side of the vacuum block (6) is hollowed out to form a cavity, the edge of the vacuum block (6) is airtightly connected to the outer wall of the aluminum mold (4) by welding, and the cavity and the outer wall of the aluminum mold (4) surround each other to form the vacuum chamber (60).

6. An improved heel shaping mold according to claim 3, characterized in that: The thermal conductive film (5) has protruding lugs (51) formed on the front and back sides of the middle position. The lugs (51) have through holes. The lugs (51) on both sides are respectively fitted onto the rotating shaft screw (44) to fix and install the thermal conductive silicone.

7. An improved kickaback shaping mold according to claim 6, wherein: The bottom end faces of the two aluminum molds (4) are respectively provided with connecting holes (49); the two sides of the heat-conducting film (5) are respectively laid on the inner wall of the hot pressing cavity (40), and the two sides of the heat-conducting film (5) are respectively turned outward to the bottom end face of the corresponding aluminum mold (4) to form a bottom end face, and are fastened to the corresponding connecting hole (49) by (52) and by bolts.

8. The improved kickers of claim 1 wherein: The thickness of the thermally conductive film (5) is 6mm-8mm.

9. An improved heel shaping mold according to claim 1, characterized in that: The spacing between two adjacent receiving holes (41) is 8mm-16mm.

10. An improved heel shaping mold according to claim 1, characterized in that: The heating assembly includes an electric heating tube, which is embedded in the receiving hole (41), and the gap between the two is filled with a high-temperature resistant thermally conductive adhesive.

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