Injection molding shoe tree

Abstract

The utility model relates to the field of injection molding shoes, in particular to an injection molding shoe tree. Comprising a shoe last body. The shoe tree split body is detachably connected with the shoe tree main body; the shoe tree main body and the shoe tree split body are connected through the limiting assembly, and the limiting assembly is located on the inner side of the shoe tree main body and the inner side of the shoe tree split body; the limiting assembly realizes the connection of the shoe tree main body and the shoe tree split body in an embedded manner; the use stability of the shoe tree split structure is improved, and the shoe tree main body and the shoe tree split body are not prone to displacement deviation through the limiting assembly; the space is saved through a built-in magnetic adsorption mode, and the operation convenience of pulling and sleeving the shoe upper in the later period is improved.

Description

Technical Field

[0001] The utility model relates to the field of injection-molded shoes, in particular to an injection-molded shoe last. Background Art

[0002] The inner injection shoe mold is a mold used to make inner injection shoes in conjunction with an injection molding shoe machine. An injection hole can be set from the top to the bottom inside the shoe last. There is also an injection hole through the upper end of the shoe last connected to the upper part of the rear end of the shoe last and the lower end connected to the bottom surface of the shoe last. The upper end of the injection hole is connected to the horizontal injection molding shoe machine through the guide hole of the injection plate.

[0003] During the injection molding process of the upper shoes, marks will be produced on the bottom, which affects the appearance and sales. An existing shoe mold structure includes a bottom mold and a shoe last. The bottom mold includes a middle frame part and a mold mouth part. The middle frame part and the mold mouth part are detachably connected together. In this device, the shoe last is set as a split structure, so that when the finished shoe is taken off, the heel part no longer blocks the finished shoe, and the finished shoe can be taken off quickly with the heel of the back foot, avoiding the inconvenience of demoulding and deformation of the finished shoe, and improving efficiency. However, the split structure of the shoe last is prone to a certain degree of dislocation and movement when encountering external forces during use, which affects the stability of the split structure. Summary of the invention

[0004] In order to solve the problems of the prior art, the utility model provides an injection-molded shoe last.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an injection-molded shoe last, comprising:

[0006] Shoe last body;

[0007] The shoe last is split and detachably connected to the shoe last body;

[0008] The limiting component is connected between the shoe last main body and the shoe last split body through the limiting component, and the limiting component is located on the inner side of the shoe last main body and the shoe last split body; the limiting component realizes the connection between the shoe last main body and the shoe last split body by embedding.

[0009] The limiting component comprises:

[0010] A protrusion is fixed at the lower part of the cut surface of the main body;

[0011] The slide groove is a groove-shaped structure. The slide groove is opened in the split surface. The slide groove is recessed into the split surface, and the protrusion can match and enter into the slide groove.

[0012] The limiting component comprises:

[0013] The inner hole is opened in the split surface, and the end surface of the inner hole is flush with the split surface;

[0014] A spring is disposed in the inner hole;

[0015] A sphere, fixedly connected to the other end of the spring;

[0016] The hole groove is arranged in the cut surface of the main body, and the hole groove is a concave structure;

[0017] The shoe last main body and the shoe last split body are fixedly connected via magnets.

[0018] The shoe last main body and the shoe last split body are fixedly connected by magnetic adsorption.

[0019] The shoe last main body comprises:

[0020] Shoe last;

[0021] A feeding table, fixed on the upper part of the shoe last;

[0022] A material pipe passes through the shoe last. The material pipe is a hollow tubular structure. The material pipe is tilted. The upper end of the material pipe is located at the rear of the feed table, and the lower end surface of the material pipe protrudes from the lower end surface of the shoe last.

[0023] Exhaust assembly, located inside the shoe last.

[0024] The exhaust assembly comprises:

[0025] A cavity is opened in the shoe last, and the material tube passes through the cavity obliquely downward;

[0026] The exhaust hole 1 is through-opened at the lower part of the shoe last, the exhaust hole 1 is connected with the cavity, the exhaust hole 1 is located at the front side of the material pipe, and the lower end surface of the exhaust hole is flush with the lower end surface of the shoe last;

[0027] The second exhaust hole is through-opened at the lower part of the shoe last, the second exhaust hole is connected with the cavity, the second exhaust hole is located at the rear side of the material pipe, and the lower end surface of the second exhaust hole is flush with the lower end surface of the shoe last;

[0028] The side exhaust hole is connected with the cavity.

[0029] The exhaust assembly comprises:

[0030] The exhaust hole three is a hollow cylindrical structure, the exhaust hole three is located at the front of the shoe last and the exhaust hole three passes through the shoe last, the upper end surface of the exhaust hole three is flush with the upper end surface of the shoe last, and the lower end surface of the exhaust hole three is flush with the lower end surface of the shoe last;

[0031] The exhaust hole four is a hollow cylindrical structure. The exhaust hole four is located behind the exhaust hole three and passes through the shoe last. The upper end surface of the exhaust hole four is flush with the upper end surface of the shoe last, and the lower end surface of the exhaust hole four is flush with the lower end surface of the shoe last.

[0032] The shoe last main body and the shoe last split body are fixedly connected via magnets.

[0033] The magnet is fixed on the split surface.

[0034] Compared with the prior art, the beneficial effects of the utility model are: improving the stability of the use of the split shoe last structure, and making it less likely for the shoe last main body and the split shoe last to have displacement deviations through the limiting component; saving space through the built-in magnetic adsorption method, and improving the convenience of later pulling on the shoe upper and taking off the shoes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objectives and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings.

[0036] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0037] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0038] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 .

[0039] Figure 4 It is a schematic diagram of the main body cut surface structure in the utility model.

[0040] Figure 5 It is a schematic diagram of the split-section structure in the utility model.

[0041] Figure 6 yes Figure 1 Schematic diagram of the structure at point A in the middle.

[0042] Figure 7 This is a schematic diagram of the structure of the utility model Figure 4 .

[0043] Figure 8 yes Figure 7 Schematic diagram of the structure at point B in the middle.

[0044] Fig. 9 It is a schematic diagram of the arrangement of magnets on the split surface in the utility model.

[0045] Fig.10 This is a schematic diagram of the structure of the utility model Figure 5 .

[0046] Among them: 100, shoe last main body; 110, shoe last; 120, feed table; 130, material pipe; 160, exhaust component; 161, cavity; 162, exhaust hole one; 163, exhaust hole two; 164, side exhaust hole; 165, exhaust hole three; 166, exhaust hole four; 140, material channel; 200, shoe last split; 210, dividing surface; 211, lower cutting surface; 212, transition cutting surface; 213, upper cutting surface; 170, main body cutting surface; 220, split cutting surface; 300, limit component; 310, protrusion; 320, slide groove; 330, inner hole; 340, spring; 350, sphere; 360, hole groove; 400, magnet; 510, installation groove one; 520, elastic body one; 610, installation groove two; 620, elastic body two. DETAILED DESCRIPTION

[0047] The present invention is further described in detail below through embodiments. The embodiments are only used to illustrate the present invention and do not limit the scope of the present invention.

[0048] An injection-molded shoe last, comprising:

[0049] Shoe last main body 100;

[0050] The shoe last split body 200 is detachably connected to the shoe last main body 100, and the shoe last main body 100 forms a dividing surface 210 at the contact point with the shoe last split body 200; Application No. CN202410323822.7 discloses that "a groove is provided at the right end of the heel portion, a reed is fixed at the upper end of the shoe last main body, and the reed is inserted into the groove to form a structure for limiting and fixing the heel portion; the reed is an elastic steel wire reed, the upper end of the elastic steel wire reed is fixedly connected to the shoe last main body, and the lower end of the elastic steel wire reed is inserted into the groove." In the scheme of the present application, the above-mentioned reed structure can be selected as a preferred option to achieve relative stability of the shoe last main body 100 and the shoe last split body 200 in the upper and lower directions;

[0051] The limiting component 300 is connected between the shoe last main body 100 and the shoe last split body 200 through the limiting component 300, and the limiting component 300 is located on the inner side of the shoe last main body 100 and the shoe last split body 200; the limiting component 300 realizes the connection between the shoe last main body 100 and the shoe last split body 200 by embedding;

[0052] The limiting assembly 300 is used to prevent the shoe last main body 100 and the shoe last split body 200 from moving leftward or rightward, thereby increasing the stability between the shoe last main body 100 and the shoe last split body 200 so that the shoe last main body 100 and the shoe last split body 200 are not prone to displacement deviation;

[0053] Preferably, the shoe last main body 100 and the shoe last split body 200 are fixedly connected by magnetic adsorption; there is a magnetic adsorption area (not shown in the figure) between the shoe last main body 100 and the shoe last split body 200; the magnetic adsorption area (not shown in the figure) can be a specific area or any area between the shoe last main body 100 and the shoe last split body 200, as long as the shoe last main body 100 and the shoe last split body 200 can be fixed by magnetic adsorption. The built-in magnetic adsorption method saves space and improves the convenience of later pulling the upper.

[0054] When one of the shoe last main body 100 and the shoe last split 200 is magnetic and the other is made of metal, the shoe last main body 100 and the shoe last split 200 can be further fixed by magnetic adsorption; when the shoe last main body 100 and the shoe last split 200 are both magnetic, the shoe last main body 100 and the shoe last split 200 have opposite magnetism, and the shoe last main body 100 and the shoe last split 200 are fixed by the principle of adsorption of oppositely charged magnets.

[0055] The shoe last body 100 comprises:

[0056] Shoe last 110;

[0057] The feed platform 120 is fixed on the upper part of the shoe last 110; a hard lining plate 121 can be installed on the side of the feed platform 120, so that the force-bearing part of the feed platform 120 is not easily deformed during the injection operation; preferably, a shoe last positioning plate 122 is fixed on the upper part of the feed platform 120, and the shoe last positioning plate 122 is a plate-shaped structure;

[0058] The material pipe 130 passes through the shoe last 110. The material pipe 130 is a hollow tubular structure. The material pipe 130 is tilted. The upper end of the material pipe 130 is located at the rear of the feed platform 120, and the lower end surface of the material pipe 130 protrudes from the lower end surface of the shoe last 110. The injection plastic passes through the feed platform 120 and enters the material pipe 130, and then is discharged downward through the material pipe 130 into the space below the shoe last 110.

[0059] The exhaust assembly 160 is located in the shoe last 110, and the gas enters from the lower part of the exhaust assembly 160 and then is discharged upward through the exhaust assembly 160;

[0060] like Figure 1 As shown, a material channel 140 is preferably provided in the feed table 120, and the material pipe 130 passes through the material channel 140;

[0061] The preferred exhaust assembly 160 includes:

[0062] A cavity 161 is provided in the shoe last 110, and the material tube 130 passes through the cavity 161 obliquely downward;

[0063] The exhaust hole 162 is formed through the lower part of the shoe last 110, the exhaust hole 162 is connected with the cavity 161, the exhaust hole 162 is located at the front side of the material tube 130, and the lower end surface of the exhaust hole 162 is flush with the lower end surface of the shoe last 110;

[0064] The second exhaust hole 163 is formed through the lower part of the shoe last 110, the second exhaust hole 163 is connected with the cavity 161, the second exhaust hole 163 is located at the rear side of the material pipe 130, and the lower end surface of the second exhaust hole 163 is flush with the lower end surface of the shoe last 110;

[0065] The side exhaust hole 164 is connected to the cavity 161; the gas enters the cavity 161 through the exhaust hole 162 and the exhaust hole 2 163, and then is discharged outward through the side exhaust hole 164; when the cavity 161 exists, the gas is discharged outward through the cavity 161 and the side exhaust hole 164;

[0066] Preferably, the side vent hole 164 is formed through the side wall of the shoe last 110, and the side vent hole 164 is a circular hole. Preferably, the side vent hole 164 is a rectangular hole ( Figure 2 As shown in FIG. 1 ), the side exhaust hole 164 is opened through the shoe last 110 and the feed table 120; the shape of the side exhaust hole 164 can be selected in a variety of ways to facilitate exhaust;

[0067] like Figure 3 As shown, the preferred exhaust assembly 160 includes:

[0068] The exhaust hole 165 is a hollow cylindrical structure. The exhaust hole 165 is located at the front of the shoe last 110 and passes through the shoe last 110. The upper end surface of the exhaust hole 165 is flush with the upper end surface of the shoe last 110, and the lower end surface of the exhaust hole 165 is flush with the lower end surface of the shoe last 110.

[0069] The exhaust hole 166 is a hollow cylindrical structure. The exhaust hole 166 is located behind the exhaust hole 165 and passes through the shoe last 110. The upper end surface of the exhaust hole 166 is flush with the upper end surface of the shoe last 110, and the lower end surface of the exhaust hole 166 is flush with the lower end surface of the shoe last 110. The gas is directly guided through the exhaust hole 165 and the exhaust hole 166, so as to be directly discharged upward. The exhaust forms of 165 and 166 can be used for both hollow shoe lasts and solid shoe lasts. Fig.10 As shown, the exhaust hole 166 can be opened through the shoe last split body 200, and the exhaust hole 166 is inclined, and the upper end surface of the exhaust hole 166 is flush with the upper end surface of the shoe last split body 200, and the lower end surface of the exhaust hole 166 is flush with the lower end surface of the shoe last split body 200;

[0070] like Figure 3As shown, the preferred number of material pipes 130 is two, or they can be set according to needs, wherein one material pipe 130 passes through the shoe last 110 and the lower end of the material pipe 130 is close to the exhaust hole three 165; another material pipe 130 passes through the shoe last 110 and is located at the rear of one material pipe 130, and the lower end of the other material pipe 130 is close to the exhaust hole four 166; setting up two material pipes 130 can improve the injection molding effect, and the coordination between the position of the lower part of the material pipe 130 and the exhaust hole is conducive to the discharge of gas through the exhaust pipe.

[0071] refer to Figure 1 , the dividing surface 210 includes:

[0072] The lower cut surface 211 is in the shape of an oblique line;

[0073] The transition cutting surface 212 is in a “√” shape, and the lower end of the transition cutting surface 212 is fixedly connected to the upper end of the lower cutting surface 211;

[0074] The upper cutting surface 213 is an arc-shaped structure, and the lower end of the upper cutting surface 213 is fixedly connected to the upper end of the transition cutting surface 212;

[0075] The shoe last body 100 forms a main body cut surface 170 on one side close to the dividing surface 210;

[0076] The split shoe last body 200 forms a split facet 220 on one side close to the split face 210; when the shoe last body 100 and the split shoe last body 200 are combined together, the main body facet 170 and the split facet 220 are close to each other;

[0077] Please refer to Figure 4 , 5 6. The limiting assembly 300 includes:

[0078] The protrusion 310 is a cylindrical structure or a rectangular parallelepiped structure. The protrusion 310 can be selected from a variety of structural forms and is fixed at a lower position of the main body cut surface 170;

[0079] The slide groove 320 is a groove-shaped structure. The slide groove 320 matches the protrusion 310. The slide groove 320 is provided in the split surface 220. The slide groove 320 is recessed into the split surface 220. When the shoe last body 100 and the shoe last split body 200 are assembled together, the protrusion 310 can be matched and enter the slide groove 320. At this time, under the action of the protrusion 310 and the slide groove 320, the shoe last body 100 and the shoe last split body 200 can be prevented from moving leftward or rightward, thereby increasing the stability between the shoe last body 100 and the shoe last split body 200.

[0080] The protrusion 310 may be made of a magnet, and the shoe last split body 200 may be made of metal. When the protrusion 310 enters the slide groove 320 , it may generate an adsorption and fixing effect with the slide groove 320 , which is beneficial to the stable contact between the shoe last main body 100 and the shoe last split body 200 .

[0081] Key References Figure 7 , 8 , the preferred limiting assembly 300 includes:

[0082] The inner hole 330 is formed in the split surface 220, and the end surface of the inner hole 330 is flush with the split surface 220;

[0083] The spring 340 is disposed in the inner hole 330; preferably, one end of the spring 340 can be fixed to the inner wall of the inner hole 330; the spring 340 is a steel wire spring;

[0084] The ball 350 is a spherical structure, which is fixedly connected to the other end of the spring 340;

[0085] The hole groove 360 ​​is arranged in the main cut surface 170. The hole groove 360 ​​is a concave structure. One side of the sphere 350 can be matched and entered into the hole groove 360. The hole groove 360 ​​corresponds to the inner hole 330. The positioning of the shoe last main body 100 and the shoe last split 200 is achieved by the cooperation of the sphere 350, the hole groove 360 ​​and the spring 340.

[0086] See also Fig. 9 The shoe last main body 100 and the shoe last split body 200 are fixedly connected by a magnet 400;

[0087] The magnet 400 can be fixed on the split surface 220, and preferably the magnet 400 is fixed on the upper part of the split surface 220. At this time, because the shoe last main body 100 is made of metal, the shoe last split 200 is fixed to the shoe last main body 100 through the magnet 400 on the split surface 220; preferably, a concave hole is opened on the split surface 220, and the magnet 400 is fixed in the concave hole, and the upper end surface of the magnet 400 is flush with the end surface of the split surface 220; of course, as a preferred embodiment, the magnet 400 can be fixed on the main body surface 170 (not shown in the figure). At this time, because the shoe last split 200 is made of metal, the shoe last split 200 is fixed to the shoe last main body 100 through the magnet 400 on the main body surface 170. Preferably, when the magnet 400 is fixed on the split facet 220 , a magnet block (not shown) having opposite magnetic properties to the magnet 400 may be provided at a corresponding position on the main facet 170 , thereby increasing the adsorption effect between the shoe last main body 100 and the shoe last split 200 .

[0088] Preferably, the magnet 400 is fixed to the upper portion of the slide slot 320;

[0089] The number of the magnet 400 is preferably at least one; the number of the magnet 400 may be multiple and the position of the magnet 400 on the shoe last main body 100 or the shoe last split body 200 may be flexibly set as required;

[0090] Key References Figure 1 , 6 A mounting groove 510 is provided at the lower part of the side wall of the shoe last body 100, and an elastic body 520 is matched and embedded in the mounting groove 510;

[0091] A second installation groove 610 is provided at the lower part of the side wall of the shoe last split 200, and an elastomer 2 620 is embedded in the second installation groove 610; the first installation groove 510 and the second installation groove 610 are matched and set accordingly; the elastomer 1 520 and the elastomer 2 620 can be made of elastic materials such as rubber, and are long strip structures; the elastomer 1 520 and the elastomer 2 620 use their own elastic changes to ensure that they can be fine-tuned to adapt to the gap between the shoe last main body 100, the shoe last split 200 and the bottom mold (not shown in the figure) in the later stage, thereby meeting the molding of shoes with different models and uppers of different thicknesses, wherein the installation groove is an annular groove or a partial strip groove or a conical column, or is set according to needs, and the specific opening position can be selected according to needs.

Claims

1. An injection molded shoe last, characterized in that: include: Shoe last body; The shoe last is split and detachably connected to the shoe last body; A limiting component, the shoe last main body and the shoe last split body are connected by the limiting component, and the limiting component is located on the inner side of the shoe last main body and the shoe last split body; The limiting component realizes the connection between the shoe last main body and the shoe last split body by embedding; The limiting component comprises: The inner hole is opened in the split surface, and the end surface of the inner hole is flush with the split surface; A spring is disposed in the inner hole; A sphere, fixedly connected to the other end of the spring; The hole groove is arranged in the cut surface of the main body, and the hole groove is a concave structure; The shoe last main body and the shoe last split body are fixedly connected via magnets.

2. The injection-molded shoe last according to claim 1, characterized in that: The limiting component comprises: A protrusion is fixed at the lower part of the cut surface of the main body; The slide groove is a groove-shaped structure. The slide groove is opened in the split surface. The slide groove is recessed into the split surface, and the protrusion can match and enter into the slide groove.

3. The injection-molded shoe last according to claim 2, characterized in that: The shoe last main body comprises: Shoe last; A feeding table, fixed on the upper part of the shoe last; A material pipe passes through the shoe last. The material pipe is a hollow tubular structure. The material pipe is tilted. The upper end of the material pipe is located at the rear of the feed table, and the lower end surface of the material pipe protrudes from the lower end surface of the shoe last. Exhaust assembly, located inside the shoe last.

4. The injection-molded shoe last according to claim 3, characterized in that: The exhaust assembly comprises: A cavity is opened in the shoe last, and the material tube passes through the cavity obliquely downward; The exhaust hole 1 is through-opened at the lower part of the shoe last, the exhaust hole 1 is connected with the cavity, the exhaust hole 1 is located at the front side of the material pipe, and the lower end surface of the exhaust hole is flush with the lower end surface of the shoe last; The second exhaust hole is through-opened at the lower part of the shoe last, the second exhaust hole is connected with the cavity, the second exhaust hole is located at the rear side of the material pipe, and the lower end surface of the second exhaust hole is flush with the lower end surface of the shoe last; The side exhaust hole is connected with the cavity.

5. The injection-molded shoe last according to claim 4, characterized in that: The exhaust assembly comprises: The exhaust hole three is a hollow cylindrical structure, the exhaust hole three is located at the front of the shoe last and the exhaust hole three passes through the shoe last, the upper end surface of the exhaust hole three is flush with the upper end surface of the shoe last, and the lower end surface of the exhaust hole three is flush with the lower end surface of the shoe last; The exhaust hole four is a hollow cylindrical structure. The exhaust hole four is located behind the exhaust hole three and passes through the shoe last. The upper end surface of the exhaust hole four is flush with the upper end surface of the shoe last, and the lower end surface of the exhaust hole four is flush with the lower end surface of the shoe last.

6. The injection-molded shoe last according to claim 5, characterized in that: The magnet is fixed on the split surface.

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