Heel stabilizing sleeve of diabetic foot shoe and processing method thereof

Abstract

The present invention discloses a heel stabilizing sleeve for diabetic foot shoes, comprising a scratch-resistant layer and a support layer connected together, wherein the hardness of the support layer is greater than the hardness of the scratch-resistant layer. The present invention combines the support layer with the scratch-resistant layer to protect the foot from being rubbed by the shoe, and also has sufficient support strength to prevent the formation of foot deformities in diabetic patients, and is suitable for use in diabetic shoes. The present invention also discloses a processing method for a heel stabilizing sleeve for diabetic foot shoes, comprising the steps of injection mold production, installation, injection processing, etc., to produce a heel stabilizing sleeve that is comfortable to the foot and suitable for use in diabetic shoes, with a high degree of automation, simple operation, and high processing accuracy of the product.

Description

Technical Field

[0001] The invention belongs to the field of shoe processing, and in particular relates to a heel stabilizing sleeve of a diabetic foot shoe and a manufacturing method thereof. Background Art

[0002] Due to peripheral neuropathy and peripheral vascular disease combined with excessive mechanical pressure in diabetic patients, the soft tissue and bone and joint system of the feet may be damaged and deformed. In order to prevent the formation of foot deformities, diabetic foot shoes will use a toe cup to stabilize the heel. The shape of the toe cup is fixed and requires a certain hardness to be effective. Due to the different edema conditions of the feet of different patients, when the shoes are too small, the feet are easy to move back and forth, causing friction with the heel toe cup, resulting in foot grinding; when the feet are severely swollen, the toe cup clamps the heel, causing pain and foot grinding, resulting in consumers not being able to prevent and treat the shoes when wearing them, but aggravating the condition. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a heel stabilizing sleeve which is comfortable to the foot and suitable for use in diabetic shoes.

[0004] The purpose of the invention is to provide a processing method of a heel stabilizing sleeve which has a comfortable foot feel and is suitable for use in diabetic shoes.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A heel stabilization sleeve for a diabetic foot shoe, comprising an anti-scratch layer and a support layer connected together, with the toe position being the front side and the side opposite to the front side being the rear side, the anti-scratch layer being located on the front side of the support layer, the side facing the feet being the inner side and the side opposite to the inner side being the outer side, the anti-scratch layer comprising an integrally formed inner side sheet, an outer side sheet and a rear side sheet connected between the inner side sheet and the outer side sheet, the free end of the inner side sheet extending forward along the length direction of the foot to the position of the arch to form a reinforcing portion for strengthening the support strength at the arch position, the length of the inner side sheet being at least 10 mm longer than that of the outer side sheet, the anti-scratch layer being divided into an anti-scratch portion located above the most convex point of the heel and a connecting portion located below the most convex point of the heel, the support layer being arranged correspondingly at the connecting portion of the anti-scratch layer, the anti-scratch portion being located above the support layer, and the hardness of the support layer being greater than the hardness of the anti-scratch layer.

[0007] Further, the thickness of the anti-scratch layer is 2-2.5MM, the hardness is 50-55°A or more, the thickness of the support layer is 1.5-2MM, and the hardness is 70-75°A or more, or the thickness of the anti-scratch layer is 2-2.5MM, the hardness is 65-70°D or more, the thickness of the support layer is 1.5-2MM, and the hardness is 90-95°D or more

[0008] Furthermore, a plurality of density setting columns are formed on the connection part of the anti-scratch layer, and the spacing between the density setting columns is more than 10 mm. The support layer is overlapped and connected to the anti-scratch layer through injection molding, and the density setting columns are embedded in the support layer. The height of each density setting column matches the thickness of the corresponding position of the anti-scratch layer.

[0009] After adopting the above technical solution, the heel stabilizing sleeve of a diabetic foot shoe of the present invention has the following beneficial effects: the support layer is combined with the anti-scratch layer to protect the foot from being rubbed by the shoe, and it also has sufficient support strength to prevent the formation of foot deformities in diabetic patients, and is suitable for use in diabetic shoes. The present invention also discloses a processing method for the heel stabilizing sleeve of a diabetic foot shoe, including the steps of injection mold production, installation, injection processing, etc., to produce a heel stabilizing sleeve that is comfortable to the foot and suitable for use in diabetic shoes, with a high degree of automation, simple operation, and high processing accuracy of the product.

[0010] A method for processing a heel stabilizing sleeve of a diabetic foot shoe comprises the following steps:

[0011] (1) Injection mold production: Scan the heel of the upper, design a mold drawing for processing the heel stabilization sleeve according to the three-dimensional spatial structural characteristics of the heel, and then process and produce the corresponding injection mold according to the mold drawing;

[0012] The injection mold includes an A module, a B module, and a C module which are sequentially assembled together in a movable manner;

[0013] (2) Lift the injection mold onto the machine platform, and connect the injection mold to the robot arm and the traction device accordingly;

[0014] (3) A first injection machine and a second injection machine are provided, the first injection machine adds glue of the anti-scratch layer, and the glue of the anti-scratch layer is heated until it becomes liquid, and the second injection machine adds glue of the support layer, and the glue of the support layer is heated until it becomes liquid;

[0015] (4) Injection processing: firstly, the A module, the B module and the C module are molded together, and the glue of the anti-scratch layer is first injected from the glue injection position of the anti-scratch layer by the first injection machine. After cooling, the A module and the C module are moved and loosened, and the B module is kept in place to obtain a semi-finished product of a shaped foot cup, i.e., an anti-scratch layer sheet;

[0016] Then the B module is moved horizontally away, the A module and the C module are continuously assembled together, and the second injection machine is moved to inject the glue of the support layer from the glue injection position of the anti-scratch layer, so that the glue of the support layer is combined with the glue of the anti-scratch layer;

[0017] After cooling and shaping, the finished foot cup, i.e. the heel stabilizing sleeve, is formed.

[0018] After adopting the above technical solution, the processing method of the heel stabilizing sleeve of the diabetic foot shoe of the present invention has the following beneficial effects: it is suitable for producing a heel stabilizing sleeve that is comfortable to the foot and suitable for diabetic shoes, has a high degree of automation, is simple to operate, and has a high processing accuracy of the product. In addition, only one set of molds is needed for the processing of the double-layer structure product, which saves production costs.

[0019] Preferably, after step (4), the heel stabilization cover is placed in the interlayer between the inner lining of the upper and the fabric, or the heel is directly attached to the surface of the upper, and then the shoe with the heel stabilization cover is placed in the mold of a freezing setting machine to shape the heel, and ensure that the heel stabilization cover matches the shape of the shoe last. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the heel stabilizing sleeve of the present invention;

[0021] Figure 2 is a cross-sectional view of the heel stabilizing sleeve of the present invention along the width direction of the shoe;

[0022] Figure 3 The outer side of the heel stabilizing sleeve of the present invention;

[0023] Figure 4 The inner side of the heel stabilizing sleeve of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the injection mold of the present invention (viewing angle: from top to bottom).

[0025] In the figure:

[0026] Anti-scratch layer-1; Inner sheet-11;

[0027] Outer side piece - 12; Rear side piece - 13;

[0028] Reinforcement part-14; Anti-scratch part-15;

[0029] Connecting part-16; Support layer-2;

[0030] Male mold mounting cover-101; Male mold auxiliary part-102;

[0031] Male mold-103; Scratch-resistant layer female mold-104;

[0032] Anti-scratch layer master mold auxiliary part-105; Support layer master mold-106;

[0033] The first auxiliary part of the supporting layer master mold-107; The second auxiliary part of the supporting layer master mold-108;

[0034] First latch-109; Second latch-110;

[0035] The third latch-111; The fourth latch-112;

[0036] Ejector pin-113; Ejector pin mounting cover-114;

[0037] Ejector auxiliary part-115; Fifth latch-116;

[0038] Sixth latch-117; Support layer injection channel-118;

[0039] Anti-scratch layer injection channel-119; First spring-120;

[0040] Second spring-121; Third spring-122;

[0041] Fourth spring-123; Limiting device-124;

[0042] Limit device-125; Limit device-126;

[0043] Limiting device-127; Mechanical arm-131;

[0044] Robotic arm-132; Robotic arm-133;

[0045] Robotic Arm-134. DETAILED DESCRIPTION

[0046] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0047] Example 1

[0048] The present invention provides a heel stabilizing sleeve for diabetic foot shoes. Figure 1-Figure 4As shown, it includes a scratch-resistant layer 1 and a support layer 2 connected together, with the position of the toe as the front side and the side opposite to the front side as the back side, the scratch-resistant layer 1 is located on the front side of the support layer 2, with the side facing the two feet as the inner side and the side opposite to the inner side as the outer side. The scratch-resistant layer 1 includes an integrally formed inner sheet 11, an outer sheet 12 and a back sheet 13 connected between the inner sheet 11 and the outer sheet 12, the free end of the inner sheet 11 extends forward along the length direction of the foot to the position corresponding to the arch of the foot to form a reinforcing portion 14 for reinforcing the support strength of the arch position, the length of the inner sheet 11 is at least 10 mm longer than that of the outer sheet 12, that is, the inner and outer sides are asymmetrical, the scratch-resistant layer 1 is divided into a scratch-resistant portion 15 located above the most convex point of the heel (shoe last) and a connecting portion 16 located below the most convex point of the heel, the support layer 2 is correspondingly arranged at the connecting portion 16 of the scratch-resistant layer 1, the scratch-resistant portion 15 is located above the support layer 2, and the hardness of the support layer 2 is greater than that of the scratch-resistant layer 1.

[0049] As a preferred embodiment, the anti-scratch layer 1 has a thickness of 2-2.5MM and a hardness of 50-55°A or more, and the supporting layer 2 has a thickness of 1.5-2MM and a hardness of 70-75°A or more; or the anti-scratch layer 1 has a thickness of 2-2.5MM and a hardness of 65-70°D or more, and the supporting layer 2 has a thickness of 1.5-2MM and a hardness of 90-95°D or more, and the anti-scratch layer 1 is a soft material layer compared to the supporting layer 2, the anti-scratch layer 1 is bonded to the upper, and the supporting layer 2 is a hard material layer superimposed on the soft material layer.

[0050] In order to facilitate secondary processing and reduce the problem of shrinkage and deformation of the finished product caused by thermal expansion and contraction after the material of the support layer 2 is injected into the surface of the anti-scratch layer 1, a plurality of density setting columns (not shown in the figure) are formed on the connecting portion 16 of the anti-scratch layer 1. The spacing between the density setting columns is more than 10 mm. The support layer 2 is overlapped and connected to the anti-scratch layer 1 through injection molding. The density setting columns are embedded in the interior of the support layer 2. The height of each density setting column matches the thickness of the corresponding position of the anti-scratch layer 1.

[0051] As a preferred embodiment, taking a shoe with a height of 70 mm as an example, the height of the anti-scratch layer 1 is less than 45 mm, and the height of the supporting layer 2 is higher than the most convex point of the heel of the shoe last, generally less than 35 mm.

[0052] The present invention discloses a heel stabilizing sleeve for a diabetic foot shoe. Due to the particularity of diabetic foot, the shaping pad in the shoe needs to have a certain hardness to play an effective preventive and therapeutic role. Softer shaping pads can alleviate the situation of foot grinding, but the prevention effect is not good. The heel stabilizing sleeve of the present invention combines a hard material (i.e., a supporting layer 2) with a soft material (i.e., an anti-scratch layer 1), which can protect against shoe grinding and has sufficient supporting strength to prevent the formation of foot deformities in diabetic patients. The heel stabilizing sleeve is suitable for use in diabetic shoes.

[0053] Example 2

[0054] The present invention provides a method for processing a heel stabilizing sleeve of a diabetic foot shoe, comprising the following steps:

[0055] (1) Injection mold production: Scan the heel of the upper, design a mold drawing for processing the heel stabilization sleeve according to the three-dimensional spatial structural characteristics of the heel, and then process and produce the corresponding injection mold according to the mold drawing;

[0056] The injection mold includes an A module, a B module, and a C module which are sequentially assembled together in a movable manner;

[0057] (2) Lift the injection mold onto the machine platform, and connect the injection mold to the robot arm and the traction device accordingly;

[0058] (3) A first injection machine and a second injection machine are provided, the first injection machine adds glue of the anti-scratch layer, and the glue of the anti-scratch layer is heated until it becomes liquid, and the second injection machine adds glue of the support layer, and the glue of the support layer is heated until it becomes liquid;

[0059] (4) Injection processing: firstly, the A module, the B module and the C module are molded together, and the glue of the anti-scratch layer is first injected from the glue injection position of the anti-scratch layer by the first injection machine. After cooling, the A module and the C module are moved and loosened, and the B module is kept in place to obtain a semi-finished product of a shaped foot cup, i.e., an anti-scratch layer sheet;

[0060] Then the B module is moved horizontally away, and the A module and the C module are continuously assembled together. The second injection machine injects the glue of the support layer from the glue injection position of the anti-scratch layer, so that the glue of the support layer is combined with the glue of the anti-scratch layer;

[0061] After cooling and shaping, the finished foot cup, i.e. the heel stabilizing sleeve, is formed.

[0062] As a preferred embodiment, a method for processing a heel stabilizing sleeve of a diabetic foot shoe of the present invention comprises the following steps:

[0063] (1) Injection mold production: Scan the heel of the upper (i.e., the shoe last with the upper finished), design a mold drawing for processing the heel stabilization sleeve based on the three-dimensional spatial structural characteristics of the heel, and further process and produce the corresponding injection mold based on the mold drawing;

[0064] like Figure 5 As shown, Figure 5 The direction indicated by the arrow is the front, the direction opposite to the direction indicated by the arrow is the back, and the two sides of the front and back directions are the left and right sides respectively. The injection mold includes an A module, a B module and a C module which are sequentially combined in a movable manner, with the A module located at the front end and the C module located at the rear end.

[0065] The injection mold includes a male mold installation cover 101, a male mold auxiliary part 102, a male mold 103, an anti-scratch layer female mold 104, an anti-scratch layer female mold auxiliary part 105, a supporting layer female mold 106, a supporting layer female mold first auxiliary part 107, a supporting layer female mold second auxiliary part 108, an ejector pin installation cover 114 and an ejector pin auxiliary part 115;

[0066] The supporting layer master mold 106 and the first auxiliary part 107 of the supporting layer master mold are combined together, and two first latch slideways are punched and drilled respectively along the front-back direction. The first latch slideway runs through the first auxiliary part 107 of the supporting layer master mold and extends to the supporting layer master mold 106. The two first latch slideways are equipped with a first latch 109 and a second latch 110 in a one-to-one correspondence. The supporting layer master mold 106 is provided with a first slide rail cavity corresponding to the first latch 109, and the first slide rail cavity is equipped with a limiting device 124, and the limiting device 124 is limited in the first slide rail cavity. The supporting layer master mold 106 is provided with a second slide rail cavity corresponding to the second latch 110, and the second slide rail cavity is equipped with a limiting device 125, and the limiting device 125 is limited in the second slide rail cavity. One end of the first latch 109 and one end of the second latch 110 are fixed to the first auxiliary part 107 of the supporting layer master mold by means of tight fit or the like. The other end of the first latch 109 is fixed to the stopper 124 and moves in the first slide rail cavity. Therefore, the first latch 109 cannot completely separate from the support layer master mold 106. The other end of the second latch 110 is fixed to the stopper 125 and moves in the second slide rail cavity. Therefore, the second latch 110 cannot completely separate from the support layer master mold 106.

[0067] The anti-scratch layer master mold auxiliary part 105 and the supporting layer master mold 106 are combined together, and two second latch slides are punched and drilled along the front and rear directions respectively. The second latch slides extend from the anti-scratch layer master mold auxiliary part 105 to the supporting layer master mold 106, and the two second latch slides are equipped with a third latch 111 and a fourth latch 112 in a one-to-one manner.

[0068] The male mold 103 is punched with an ejector slideway along the front-to-back direction, and the ejector slideway is equipped with an ejector 113, which moves along the front-to-back direction. The male mold 103, the anti-scratch layer female mold 104 and the anti-scratch layer female mold auxiliary 105 are sequentially combined together, and two third latch slideways are punched and opened along the front-to-back direction respectively. The third latch slideway runs through the anti-scratch layer female mold 104, and one end of the third latch slideway extends to the male mold 103, and the other end extends to the anti-scratch layer female mold auxiliary 105. The two third latch slideways are equipped with a fifth latch 116 and a sixth latch 117 one by one. The anti-scratch layer female mold 104 is provided with a third slide rail cavity corresponding to the fifth latch 116, and the third slide rail cavity is equipped with a limiting device 127. The limiting device 127 is limited in the third slide rail cavity. The support layer master mold 106 is provided with a fourth slide rail cavity corresponding to the seventh latch 117, and the fourth slide rail cavity is equipped with a limiting device 126. The limiting device 126 is limited in the fourth slide rail cavity. One end of the fifth latch 116 and one end of the sixth latch 117 are respectively fixed to the anti-scratch layer master mold auxiliary part 105 by means of tight fit or the like. The other end of the fifth latch 116 is fixed to the limiting device 127 and moves in the third slide rail cavity. Therefore, the fifth latch 116 cannot be completely separated from the anti-scratch layer master mold 104. The other end of the sixth latch 117 is fixed to the limiting device 126 and moves in the fourth slide rail cavity. Therefore, the sixth latch 117 cannot be completely separated from the anti-scratch layer master mold 104.

[0069] The anti-scratch layer master mold 104 and the anti-scratch layer master mold auxiliary part 105 are combined together, and two first spring channels are punched and drilled along the front and rear directions respectively. The first spring channels extend from the anti-scratch layer master mold 104 to the anti-scratch layer master mold auxiliary part 105. The two first spring channels are equipped with a first spring 120 and a second spring 121 in a one-to-one manner. The two ends of the first spring 120 can be limited or fixed at the corresponding two ends of the corresponding first spring channels, and the two ends of the second spring 121 can be limited or fixed at the corresponding two ends of the corresponding first spring channels.

[0070] The anti-scratch layer master mold 104 and the anti-scratch layer master mold auxiliary part 105 are combined together to form a first combined seam, and the anti-scratch layer master mold 104 and the anti-scratch layer master mold auxiliary part 105 are jointly drilled with an anti-scratch layer injection channel 119, and an anti-scratch layer cavity is formed between the combined male mold 103 and the anti-scratch layer master mold 104, and the anti-scratch layer injection channel 119 is connected to the anti-scratch layer cavity.

[0071] Specifically, the anti-scratch layer injection channel 119 is T-shaped, and the anti-scratch layer injection channel 119 includes a first feed section, a first discharge section and a buffer section. The first discharge section and the buffer section are arranged opposite to each other, and the two are located on the same straight line. The first feed section and the first discharge section are arranged perpendicularly, and the first feed section is arranged in the vertical direction, and its diameter gradually decreases along the material conveying direction. The first discharge section is arranged in the horizontal direction, and its diameter gradually decreases along the material conveying direction. The first discharge section is located on the anti-scratch layer mother mold 104, and the first discharge section is connected to the anti-scratch layer cavity. The buffer section is located on the anti-scratch layer mother mold auxiliary part 105, and the maximum diameter of the first discharge section is located at the first joint seam, and the maximum diameter of the buffer section is located at the first joint seam. In this way, when the first joint seam is opened, the first discharge section can conveniently use its own stress to realize automatic material removal, and the buffer section is convenient to form an interaction force with the first discharge section during material removal, so as to facilitate the material removal of the first discharge section. The axis line of the first feed section is located at the first joint seam, and the diameter of the first feed section gradually increases along the material conveying direction. When the first joint seam is opened, the first feed section is opened, which is easy to remove the material, and at the moment of opening, an interaction force is formed between the first feed section, the first discharge section and the buffer section, which facilitates the removal of the anti-scratch layer injection channel 119, so that the anti-scratch layer 1 after molding is flat and smooth without burrs. At the same time, the anti-scratch layer injection channel 119 removes the material cleanly each time, protects the mold, and is conducive to subsequent indirect repetitive injection operations.

[0072] The support layer master mold 106 and the first auxiliary member 107 of the support layer master mold are combined together, and two second spring channels are punched and drilled respectively along the front-back direction, and the second spring channels extend from the support layer master mold 106 to the first auxiliary member 107 of the support layer master mold. The two second spring channels are respectively equipped with a third spring 122 and a fourth spring 123. The two ends of the third spring 122 can be limited or fixed at the corresponding two ends of the corresponding second spring channel, and the two ends of the fourth spring 123 can be limited or fixed at the corresponding two ends of the corresponding second spring channel.

[0073] The supporting layer master mold 106, the first auxiliary part 107 of the supporting layer master mold and the second auxiliary part 108 of the supporting layer master mold are combined together, a second combined seam is formed between the supporting layer master mold 106 and the first auxiliary part 107 of the supporting layer master mold, and a supporting layer injection channel 118 is punched together by the supporting layer master mold 106, the first auxiliary part 107 of the supporting layer master mold and the second auxiliary part 108 of the supporting layer master mold. A supporting layer cavity is formed between the combined male mold 103 and the supporting layer master mold 106, and the supporting layer injection channel 118 is connected to the supporting layer cavity.

[0074] Preferably, the support layer injection channel 118 is in a straight line shape, and includes a second feed section and a second discharge section, the second feed section and the second discharge section are arranged opposite to each other, and the two are located on the same straight line, and the second feed section is arranged in the horizontal direction, and its diameter gradually increases along the material conveying direction (the material is conveyed from top to bottom), and the second discharge section is arranged in the horizontal direction, and its diameter gradually decreases along the material conveying direction. The second discharge section is located on the support layer master mold 106, and the second discharge section is connected to the support layer cavity. The second feed section is located on the first auxiliary part 107 of the support layer master mold and the second auxiliary part 108 of the support layer master mold. The maximum diameter of the second discharge section is located at the second joint seam. The maximum diameter of the second feed section is located at the second joint seam. In this way, when the second joint seam is opened, the second discharge section can conveniently utilize its own stress to realize automatic stripping, and the second feed section is convenient to form an interaction force with the second discharge section during stripping, which is convenient for stripping of the support layer injection channel 118, so that the formed support layer 2 is flat and smooth without burrs. At the same time, the support layer injection channel 118 can strip cleanly each time to protect the mold and facilitate subsequent indirect repetitive injection operations.

[0075] Preferably, in order to ensure that the aesthetics of the sprue and the joint can be well controlled during the secondary injection, the support layer master mold 106 can be divided into two symmetrically arranged left and right parts to facilitate adjustment of the tightness of the mold to achieve the best effect.

[0076] When assembling, the first step is to insert one end of the first latch 109 and one end of the second latch 110 into the first auxiliary part 107 of the supporting layer master mold respectively, and then close the second auxiliary part 108 of the supporting layer master mold, and the first auxiliary part 107 of the supporting layer master mold and the second auxiliary part 108 of the supporting layer master mold are combined together, and the two are fixed with bolts. The third spring 122 and the fourth spring 123 are installed on the first auxiliary part 107 of the supporting layer master mold and the second auxiliary part 108 of the supporting layer master mold, and the supporting layer master mold 106 is inserted, and the supporting layer master mold 106, the first auxiliary part 107 of the supporting layer master mold and the second auxiliary part 108 of the supporting layer master mold are pressed. Then the limiting device 124 and the limiting device 125 are installed to synthesize the A module. After releasing the pressure, the supporting layer master mold 106 and the first auxiliary part 107 of the supporting layer master mold will be bounced open by the elastic action of the third spring 122 and the fourth spring 123, so as to facilitate the automatic removal of the supporting layer injection channel 118. The opened space will not cause the supporting layer master mold 106 to slide off the first latch 109 and the second latch 110 under the limiting action of the limiting device 124 and the limiting device 125, that is, the supporting layer master mold 106 will not completely separate from the supporting layer master mold first auxiliary part 107.

[0077] Step 2: Install the first spring 120 and the second spring 121 in the anti-scratch layer master mold auxiliary part 105, then insert the fifth latch 116 and the sixth latch 117 into the anti-scratch layer master mold auxiliary part 105 and fix them together, then insert the anti-scratch layer master mold 104, and press the anti-scratch layer master mold 104 and the anti-scratch layer master mold auxiliary part 105, then install the limiting device 127 and the limiting device 126 to synthesize the B module; after releasing the pressure, the anti-scratch layer master mold 104 and the anti-scratch layer master mold auxiliary part 105 will pop open due to the elastic action of the first spring 120 and the second spring 121, so as to facilitate the automatic removal of the anti-scratch layer injection channel 119, and the opened space will not cause the anti-scratch layer master mold 104 to slip from the fifth latch 116 and the sixth latch 117 under the limiting action of the limiting device 126 and the limiting device 127, that is, the anti-scratch layer master mold 104 will not completely detach from the anti-scratch layer master mold auxiliary part 105.

[0078] Step 3: The ejector pin 113 is plugged into the ejector auxiliary part 115, fixed with bolts, and the ejector mounting cover 114 is covered. The ejector mounting cover 114 and the ejector auxiliary part 115 are fixed with bolts. The ejector pin 113, the ejector auxiliary part 115 and the ejector mounting cover 114 are combined into an ejector module. The ejector pin 113 is used to eject the finished product, and the ejector mounting cover 114 and the ejector auxiliary part 115 form a limit block.

[0079] Step 4: The male mold auxiliary part 102 and the male mold 103 are fixed with bolts, and then the ejector module is inserted, and the ejector 113 is combined with the male mold 103. Finally, the male mold installation cover 101 is covered, and the male mold installation cover 101 and the male mold auxiliary part 102 are fixed with bolts. The male mold installation cover 101, the male mold auxiliary part 102 and the male mold 103 are enclosed together to form an active cavity, and the ejector module is embedded in the active cavity, and the above-mentioned limit block (composed of the ejector installation cover 114 and the ejector auxiliary part 115) can move forward and backward in the active cavity, thereby driving the ejector 113 to move forward and backward. The assembled male mold installation cover 101, male mold auxiliary part 102, male mold 103 and ejector module are combined into the above-mentioned C module.

[0080] Step 5: The third latch 111 and the fourth latch 112 are installed on the support layer master mold 106, and the mechanical arms 131 and 133 are installed on the left and right sides of the anti-scratch layer master mold 104. The mechanical arms 132 and 134 are installed on the left and right sides of the anti-scratch layer master mold auxiliary 105, and a traction device is installed on the ejector mounting cover 114 to drive the ejector 113 to slide with the ejector mounting cover 114. The traction device is a conventional traction device that can achieve the corresponding traction function.

[0081] Step 6: Put the assembled A module, B module and C module together and press them tightly.

[0082] (2) Lift the injection mold onto the machine platform and connect the mold to the robot arm and the traction device accordingly;

[0083] (3) A first injection machine and a second injection machine are provided, the first injection machine adds glue of the anti-scratch layer, and the glue of the anti-scratch layer is heated until it becomes liquid, and the second injection machine adds glue of the support layer, and the glue of the support layer is heated until it becomes liquid;

[0084] (4) Injection processing: a. Modules A, B and C are molded together. First, the first injection machine is used to inject the glue of the anti-scratch layer from the anti-scratch layer injection channel 119. After cooling, modules A and C are moved back and forth to loosen. Module B remains in place. Under the action of the first spring 120 and the second spring 121, the anti-scratch layer mother mold 104 and the anti-scratch layer mother mold auxiliary 105 are bounced open. The glue in the anti-scratch layer injection channel 119 automatically detaches and falls into the recovery basket inside the machine. The injected glue remains on the male mold 103, forming a semi-finished product of a shaped foot cup, that is, an anti-scratch layer sheet;

[0085] b. Module B is moved horizontally away by the robot arm, and module A and module C are combined together. The second injection machine is moved to the support layer feed channel 118 position, and glue of the support layer is injected, so that the glue of the support layer is combined with the glue of the anti-scratch layer;

[0086] c. After cooling and shaping, a finished foot-shaped cup, i.e., a heel stabilizing sleeve, is formed. Then, the A module and the C module are loosened. Under the action of the third spring 122 and the fourth spring 123, the supporting layer mother mold 106 and the first auxiliary part 107 of the supporting layer mother mold are bounced apart. The supporting layer feed channel 118 automatically detaches and falls into the recovery basket inside the machine. At the same time, the ejector pin 113 is started and moves forward to eject the finished product, causing the finished product to fall into the finished product basket.

[0087] Then, the robot arm moves module B back to its original position, and modules A, B and C are molded together, and steps a, b and c are repeated to produce the next finished product.

[0088] As a preferred implementation, after step (4), the heel stabilization cover is placed in the interlayer between the inner lining of the upper and the fabric, or the heel is directly attached to the surface of the upper, and then the shoe with the heel stabilization cover is placed in the mold of a freezing molding machine to shape the heel, and ensure that the heel stabilization cover matches the shape of the shoe last.

[0089] As a preferred implementation mode, in step (2), in order to facilitate secondary processing and to prevent the problem of shrinkage and deformation of the finished product due to thermal expansion and contraction after the material of the support layer 2 is injected into the surface of the anti-scratch layer 1, a density setting column is provided at the junction of the anti-scratch layer 1 and the support layer 2. The diameter of the column is 2MM, and the height is consistent with the thickness of the corresponding position of the anti-scratch layer 1. The distance between the columns is more than 10MM, and then a plurality of density setting columns are formed on the connecting part of the anti-scratch layer 1, and the distance between the density setting columns is more than 10mm.

[0090] The invention discloses a method for processing a heel stabilizing cover of a diabetic foot shoe. The method is simple, combines a hard material (i.e. a supporting layer 2) with a soft material (i.e. an anti-scratch layer 1), and is suitable for use in diabetic shoes.

[0091] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A heel stabilizing sleeve for diabetic foot shoes, characterized in that: The shoe comprises an anti-scratch layer and a support layer connected together, with the position of the toe as the front side and the side opposite to the front side as the back side, the anti-scratch layer is located on the front side of the support layer, the side facing the two feet is the inner side, and the side opposite to the inner side is the outer side, the anti-scratch layer comprises an integrally formed inner side sheet, an outer side sheet and a back side sheet connected between the inner side sheet and the outer side sheet, the free end of the inner side sheet extends forward along the length direction of the foot to the position of the arch to form a reinforcing portion for reinforcing the support strength of the arch position, the length of the inner side sheet is at least 10 mm longer than that of the outer side sheet, the anti-scratch layer is divided into an anti-scratch portion located above the most convex point of the heel and a connecting portion located below the most convex point of the heel, the support layer is correspondingly arranged at the connecting portion of the anti-scratch layer, the anti-scratch portion is located above the support layer, and the hardness of the support layer is greater than the hardness of the anti-scratch layer; The hardness of the anti-scratch layer is above 50-55︒A; A plurality of density setting columns are formed on the connection part of the anti-scratch layer, and the spacing between the density setting columns is more than 10 mm. The support layer is superimposed and connected to the anti-scratch layer by injection molding, and the density setting columns are embedded in the support layer. The height of each density setting column matches the thickness of the corresponding position of the anti-scratch layer; The processing method of the heel stabilizing sleeve comprises the following steps: (1) Injection mold production: Scan the heel of the upper, design a mold drawing for processing the heel stabilization sleeve according to the three-dimensional spatial structural characteristics of the heel, and then process and produce the corresponding injection mold according to the mold drawing; The injection mold includes an A module, a B module, and a C module which are sequentially assembled together in a movable manner; (2) Lift the injection mold onto the machine platform, and connect the injection mold to the robot arm and the traction device accordingly; (3) A first injection machine and a second injection machine are provided, the first injection machine adds glue of the anti-scratch layer, and the glue of the anti-scratch layer is heated until it becomes liquid, and the second injection machine adds glue of the support layer, and the glue of the support layer is heated until it becomes liquid; (4) Injection processing: firstly, mold the A module, the B module and the C module together, and firstly use the first injection machine to inject the glue of the anti-scratch layer from the glue injection position of the anti-scratch layer. After cooling, move the A module and the C module to loosen them, and keep the B module in place to obtain a semi-finished product of a shaped foot cup, that is, the anti-scratch layer sheet; Then the B module is moved horizontally away, the A module and the C module are continuously assembled together, and the second injection machine is moved to inject the glue of the support layer from the glue injection position of the anti-scratch layer, so that the glue of the support layer is combined with the glue of the anti-scratch layer; After cooling and shaping, the finished foot cup, i.e. the heel stabilizing sleeve, is formed.

2. A heel stabilizing sleeve for diabetic foot shoes as claimed in claim 1, characterized in that: After step (4), the heel stabilizing sleeve is placed in the interlayer between the lining of the upper and the fabric, or the heel is directly attached to the surface of the upper, and then the shoe with the heel stabilizing sleeve is placed in the mold of the freezing setting machine to set the heel, and ensure that the heel stabilizing sleeve matches the shape of the shoe last.

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