One-piece combined rubber boots mold and production method thereof

Abstract

The present application discloses an integrated molded combined rubber boots mold and a production method thereof, and relates to the field of mold technology. The mold comprises an outer mold, an upper core mold, a lower core mold and a lower mold; the outer mold is provided with a cavity from top to bottom, the upper core mold is arranged at the top of the cavity, and the lower core mold can be movably arranged at the bottom of the cavity; the lower mold can be movably arranged at the lower side of the outer mold, and a molding cavity for molding the boot body is formed between the outer mold, the upper core mold, the lower core mold and the lower mold, and a flow channel for connecting the molding cavity is formed on the upper core mold. The production method of the mold comprises a feeding step, a mold closing step, an injection molding step, a vulcanization step and a demolding step. The mold can eliminate defects such as the mold closing line and flash on the outer side of the boot body, making the outer side of the boot body more beautiful and improving the sales grade. The mold production method has fewer process steps, high product molding quality, less labor demand, safety and environmental protection, and low overall cost.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and specifically to an integrated molded combined rubber boot mold and a production method thereof. Background Art

[0002] Boots are shoes with a slightly cylindrical upper that reaches above the ankle. They are usually composed of a boot body, a sole and a lining.

[0003] At present, traditional rubber boots are a product made by a labor-intensive production method. On a simple production line, workers manually stick the various parts of the rubber boots, such as the rubber film, lining, and sole, on the shoe last to form a rubber boot. The boot is then vulcanized in a vulcanizer to form the final product.

[0004] However, the existing rubber boots production mold still has the following defects:

[0005] Existing molds for molding boot bodies usually include a core mold for molding the inner side of the boot body and a left mold and a right mold for molding the outer side of the boot body. Since the left mold and the right mold are split structures, product defects such as mold lines and flash will occur on the front and back sides of the boot body after injection molding, which is not beautiful and seriously affects the sales grade of rubber boots.

[0006] Therefore, how to improve the existing rubber shoe production mold to overcome the above-mentioned shortcomings is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0007] One purpose of the present application is to provide an integrated combined rubber boot mold and a production method thereof that can eliminate defects such as the mold line and flash on the outer side of the boot body, make the outer side of the boot body more beautiful, and improve sales grade.

[0008] Another object of the present application is to provide an one-piece combined rubber boot mold and a production method thereof, which has fewer process steps, high product molding quality, less labor demand, safety, environmental protection, and low overall cost.

[0009] In order to achieve the above objectives, the technical solution adopted in the present application is: an integrated molding combination rubber boot mold, comprising an outer mold, an upper core mold, a lower core mold and a lower mold; the outer mold is provided with a cavity running through the upper and lower parts, the upper core mold is arranged at the top of the cavity, and the lower core mold can be movably arranged at the bottom of the cavity; the lower mold can be movably arranged at the lower side of the outer mold, and a molding cavity for molding the boot body is formed between the outer mold, the upper core mold, the lower core mold and the lower mold, and a flow channel for connecting the molding cavity is formed on the upper core mold.

[0010] Preferably, a positioning groove with a conical structure is provided at the lower end of the upper core mold, and a positioning portion for fitting into the positioning groove is provided at the upper end of the lower core mold.

[0011] Preferably, the one-piece combined rubber boot mold further includes a driving member for driving the lower core mold to move up and down, the driving member is arranged on the outer mold or the upper core mold, and the driving member is connected to the lower core mold.

[0012] Preferably, the mating surface between the upper core mold and the lower core mold passes through the narrowest part of the boot shaft of the boot body.

[0013] Preferably, the flow channel is arranged sequentially along the interior of the upper core mold, the interior of the lower core mold and the lower surface of the lower core mold.

[0014] Preferably, the one-piece combined rubber boot mold further comprises an upper mold plate, which is movably disposed up and down on the upper surface of the outer mold, and the upper end of the upper core mold is disposed on the upper mold plate.

[0015] Preferably, an annular cavity for forming a flash on the upper edge of the inner side of the boot body is provided between the upper core mold and the outer mold, and the annular cavity is suitable for being a structure that is wide at the top and narrow at the bottom.

[0016] Preferably, the one-piece molding combination rubber boot mold also includes a bottom mold, which can be movably arranged up and down at the lower end of the lower mold, and an extrusion cavity for extruding the raw material to form a boot sole is formed between the bottom mold and the lower mold; when the lower mold is separated from the outer mold, and the bottom mold is separated from the lower mold, the lower mold can move to the outside of the outer mold; when the bottom mold is molded with the outer mold, the space between the boot body and the boot sole is suitable for forming a rubber boot through vulcanization.

[0017] Preferably, one side of the outer mold is rotatably disposed on a fixing frame; when the bottom mold is separated from the outer mold, the outer mold is rotated to an inclined state, and the lower core mold moves away from the upper core mold to facilitate removal of the rubber boot.

[0018] Preferably, air passages for inflating air into the upper surface of the shoe sole are provided inside the upper core mold and the lower core membrane.

[0019] Preferably, the one-piece combined rubber boot mold further comprises a weighing feeding piece for quantitatively adding the raw material to the area on the bottom mold corresponding to the extrusion cavity.

[0020] Preferably, the weighing and feeding parts include a funnel, a sleeve, a pipe, a support frame, an elastic member, a duckbill valve, a lower protective cover, a pressure detector and a conveying member; the sleeve is sleeved on the outside of the funnel, the upper end of the pipe is slidably connected to the inner side of the sleeve, and the upper end of the pipe is inseparable from the lower end of the sleeve; the duckbill valve is built into the upper end of the pipe, and the lower protective cover is connected to the lower end of the pipe; the elastic member is arranged inside the sleeve, and the elastic member is used to make the pipe slide downward; the upper side of the support frame is connected to the funnel or the sleeve through the pressure detector, and the conveying member is arranged on the support frame, and the conveying member is at least used to convey the support frame to move horizontally and lift.

[0021] Preferably, the outer mold, the lower core mold and the lower mold are suitable for forming a shoe sole.

[0022] Preferably, air passages for inflating air into the upper surface of the shoe sole are provided inside the upper core mold and the lower core membrane.

[0023] The present application also provides a method for producing an integrally formed combined rubber boot mold, comprising the following steps:

[0024] Loading step: weighing a certain amount of the raw material and adding it to the area on the bottom die corresponding to the extrusion cavity;

[0025] Mold closing step: controlling the lower mold to move between the outer mold and the bottom mold, and controlling the bottom mold, the lower mold and the lower core mold to move upward until the mold closing action is completed, and the raw material in the extrusion cavity is extruded to form a shoe sole;

[0026] Injection molding step: firstly evacuate the molding cavity, and then inject rubber into the molding cavity through the flow channel to form the boot body by injection molding;

[0027] Vulcanization step: firstly drive the bottom mold and the lower mold to move downward, after the lower mold is separated from the outer mold and the bottom mold is separated from the lower mold, drive the lower mold to move to the outside of the outer mold, and then drive the bottom mold to move upward to close the mold with the outer mold, so that the boot body and the boot sole are vulcanized to form a rubber boot;

[0028] Demoulding step: first drive the bottom mould to move downward, then drive the lower core mould to move downward, and then the rubber boot can be taken out.

[0029] Preferably, in the demolding step, after driving the bottom mold to move downward, the outer mold is driven to rotate to an inclined state, and air is inflated toward the upper surface of the boot sole through the air passages inside the upper core mold and the lower core membrane, so that the lower core mold is separated from the upper surface of the boot sole, the lower core mold is separated from the inner side of the boot body, and the upper core mold is separated from the inner side of the boot body by air pressure, and then the lower core mold is driven to move in a direction away from the upper core mold, so that the rubber boots can be removed more easily.

[0030] Compared with the prior art, the beneficial effects of this application are:

[0031] (1) Since the outer mold is provided with a cavity from top to bottom, the upper core mold is arranged at the top of the cavity, and the lower core mold can be movably arranged at the bottom of the cavity; the lower mold can be movably arranged at the lower side of the outer mold, and a molding cavity for molding the boot body is formed between the outer mold, the upper core mold, the lower core mold and the lower mold, and a flow channel for connecting the molding cavity is formed on the upper core mold. Therefore, compared with the traditional mold structure, the outer mold of the mold is an integral structure, so no parting line will be formed on the outer side of the boot body, which is conducive to improving the aesthetics and sales grade of the boot body. In addition, although the parting surface between the upper core mold and the lower core mold will also form a parting line on the inner side of the boot body, on the one hand, the parting line is located on the inner side of the boot body and will not affect the aesthetics; on the other hand, since the inner side of the boot body needs to be lined in the subsequent process, the lining will cover the parting line, so it will not affect the comfort of wearing.

[0032] (2) With the cooperation of the bottom mold, the raw materials for molding the sole can be first added to the area of ​​the bottom mold corresponding to the extrusion cavity. After the molds are closed, the raw materials in the extrusion cavity are extruded between the lower mold and the bottom mold, thereby forming the sole of the boot; the boot body can be injection molded in the molding cavity between the outer mold, the upper core mold, the lower core mold and the lower mold; then, the bottom mold and the lower mold are driven to move downward, and after the lower mold is separated from the outer mold and the bottom mold is separated from the lower mold, the lower mold is driven to move to the outside of the outer mold, and then the bottom mold is driven upward to close the mold with the outer mold, so that the boot body and the sole are vulcanized to form a rubber boot. Compared with the traditional production process, the process of producing rubber boots by this one-piece molding combination is conducive to simplifying the operation steps, reducing the number of workers and production links, and reducing the production cost exponentially. At the same time, due to one-time injection molding and reducing human factors, the product qualification rate is greatly improved.

[0033] (3) Since the sole of the mold needs to be vulcanized and molded integrally with the boot body, the quality of the raw materials used to mold the sole needs to be strictly controlled; too much raw material will cause overflow on the upper edge of the sole, and the overflow will make it impossible to completely close the mold between the bottom mold and the outer mold; too little raw material will cause incomplete molding of the sole, thus affecting the vulcanization process between the boot body and the sole. However, with the action of the weighing and feeding part, that is, the granular raw material is first added to the funnel, at this time, under the action of the duckbill valve, the raw material will not be discharged downward, thereby achieving the function of storing raw materials; the pressure change value can be detected by the pressure detector, so that the mass of the raw material added to the funnel can be calculated and converted, so as to achieve precise control of the added mass of the raw materials, and the feeding operation can be carried out during injection molding or vulcanization, and will not take up extra time; when the mold is opened to take out the rubber boots, the support frame can be driven to move in space by the conveying part until the lower shield moves to the corresponding position on the bottom mold. When the feeder is directly above the area of ​​the extrusion cavity, the support frame is driven downward by the conveying member until the lower shield contacts the bottom die, and the pipeline squeezes the elastic member, so that the funnel moves downward relative to the duckbill valve until the lower end of the funnel forces the duckbill valve to open, so that the raw materials in the funnel automatically fall onto the bottom die, and the lower shield can prevent the raw materials from spilling. After the automatic feeding action is completed, the conveying member drives the support frame to reset, and under the action of the elastic member, the pipeline resets downward, that is, the lower end of the funnel is withdrawn from the duckbill valve, and the duckbill valve automatically closes under its own elastic action. This feeding operation does not require manual participation and can be performed simultaneously with the removal of the rubber boots, without taking up extra time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of an integrated molded combination rubber boots mold provided in this application.

[0035] Figure 2 Provided for this application Figure 1 A partial enlarged view of point I in the middle.

[0036] Figure 3 Provided for this application Figure 1 A schematic diagram of the structure of the one-piece combined rubber boots mold from another perspective.

[0037] Figure 4 Provided for this application Figure 1 Schematic diagram of the top view of the middle and lower molds.

[0038] Figure 5 Provided for this application Figure 1 The first mold opening state diagram of the one-piece molded combination rubber boots mold.

[0039] Figure 6 Provided for this application Figure 1 The second mold closing state diagram of the one-piece molded combination rubber boots mold.

[0040] Figure 7 Provided for this application Figure 1 The second mold opening state diagram of the one-piece molded combination rubber boots mold.

[0041] Figure 8 A three-dimensional structural diagram of a weighing and loading piece provided in this application.

[0042] Fig. 9 Provided for this application Figure 8 Exploded view of weighing and loading parts.

[0043] Fig.10 Provided for this application Figure 8 Cross-sectional view of the weighing and loading parts.

[0044] Fig.11 Provided for this application Fig.10 The working principle diagram of weighing and loading parts.

[0045] In the figure: 1, outer mold; 11, chamber; 2, upper core mold; 21, positioning groove; 3, lower core mold; 31, positioning part; 4, lower mold; 5, driving member; 6, upper mold plate; 7, bottom mold; 8, weighing and feeding member; 81, funnel; 82, sleeve; 83, pipeline; 84, support frame; 85, elastic member; 86, duckbill valve; 87, lower shield; 88, pressure detector; 9, fixing frame; 100, molding cavity; 200, flow channel; 300, annular cavity; 400, extrusion cavity; 500, airway; 600, telescopic member. DETAILED DESCRIPTION

[0046] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0047] In the description of the present application, it should be noted that for directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions and positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present application. The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. The terms "including" and "having" in the specification and claims of the present application and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device including a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. Example 1

[0048] Reference Figure 1 An embodiment of the present application provides an integrated combined rubber boot mold, comprising an outer mold 1, an upper core mold 2, a lower core mold 3 and a lower mold 4; the outer mold 1 is penetrated by a cavity 11 from top to bottom, the upper core mold 2 is arranged at the top of the cavity 11, and the lower core mold 3 can be movably arranged at the bottom of the cavity 11; the lower mold 4 can be movably arranged at the lower side of the outer mold 1, and a molding cavity 100 for molding a boot body is formed between the outer mold 1, the upper core mold 2, the lower core mold 3 and the lower mold 4, and a flow channel 200 for connecting the molding cavity 100 is formed on the upper core mold 2.

[0049] Working principle of this embodiment: Since the outer mold 1 of the mold is an integral structure, no parting line will be formed on the outer side of the boot body, which is conducive to improving the aesthetics and sales level of the boot body. In addition, although the parting surface 700 between the upper core mold 2 and the lower core mold 3 will also form a parting line on the inner side of the boot body, on the one hand, the parting line is located on the inner side of the boot body and will not affect the aesthetics; on the other hand, since the inner side of the boot body needs to be lined in the subsequent process, the lining will cover the parting line, so it will not affect the comfort of wearing.

[0050] This embodiment does not limit the specific installation method of the lower core mold 3 that can move up and down. The following only provides a specific implementation method for reference: Figure 7As shown, an integrally formed combined rubber boot mold further includes a driving member 5 for driving the lower core mold 3 to move up and down, the driving member 5 is arranged on the outer mold 1 or the upper core mold 2, and the driving member 5 is connected to the lower core mold 3. Among them, the driving member 5 itself is a prior art, such as a cylinder, a hydraulic cylinder, etc.

[0051] It is understandable that since the mold is usually a solid structure, the weight of the lower core mold 3 is large, and the weight of the lower core mold 3 near the toe is greater due to the difference in configuration. When the outer mold 1 is set as a rotatable structure and rotates, it is easy for the lower core mold 3 to force the driving part 5 to produce a large deflection error in both the closed and open mold states, thereby causing the lower core mold 3 and the upper core mold 2 to be misaligned, thereby affecting the molding quality of the inner side of the boot body.

[0052] In this embodiment, in order to solve the problem of misalignment between the lower core mold 3 and the upper core mold 2, as shown in FIG. Figure 1 , Figure 3 as well as Figure 7 As shown, the lower end of the upper core mold 2 is provided with a positioning groove 21 of a conical structure, and the upper end of the lower core mold 3 is provided with a positioning portion 31 for fitting the positioning groove 21. When the driving member 5 drives the lower core mold 3 to close the mold, on the one hand, the positioning groove 21 having a wide bottom and a narrow top structure can prevent the positioning portion 31 from being unable to be inserted into the positioning groove 21 due to the offset error of the lower core mold 3; on the other hand, during the upward movement of the lower core mold 3, the side wall of the positioning groove 21 of the conical structure can guide the positioning portion 31, thereby gradually correcting the offset error of the lower core mold 3, until the positioning portion 31 is matched with the positioning groove 21, so that the lower core mold 3 can be accurately and stably suspended in the cavity 11, thereby ensuring the molding quality of the boot body.

[0053] In this embodiment, if Figure 1 and Figure 3 In order to ensure that the boot body can be separated from the upper core mold 2 more easily during demoulding, the mating surface 700 of the upper core mold 2 and the lower core mold 3 is suitable for passing through the narrowest part of the boot shaft of the boot body.

[0054] In this embodiment, in order to simplify the structure of the flow channel 200, as shown in FIG. Figure 1 As shown, the flow channel 200 is sequentially arranged along the interior of the upper core mold 2, the interior of the lower core mold 3 and the lower surface of the lower core mold 3. After injection molding, the injection molding waste in the flow channel 200 on the lower surface of the lower core mold 3 contacts the lower edge of the inner side of the boot body, which facilitates the separation operation of the injection molding waste.

[0055] In this embodiment, since the mold closing position between the upper core mold 2 and the outer mold 1 is prone to flash defects, the generation of flash defects will be largely random and uncontrollable, that is, there may be differences in the presence or absence of flash or the size of flash at different positions, which is not conducive to the control of product molding quality and also increases the difficulty of subsequent trimming of flash. In order to solve this problem, Figure 2As shown, an annular cavity 300 for forming flash on the upper edge of the inner side of the boot body is provided between the upper core mold 2 and the outer mold 1, and the annular cavity 300 is suitable for a structure of being wide at the top and narrow at the bottom. Under the action of the annular cavity 300, the flash can be formed evenly on the upper edge of the inner side of the boot body, and the structure of being wide at the top and narrow at the bottom facilitates the stripping operation of the flash, thus eliminating the operation of trimming the flash; in addition, under the action of the injection molding pressure, the annular cavity 300 can be filled with the injection molding glue, so that after stripping the flash, the molding quality of the upper edge of the inner side of the boot body can be higher, so there will be no defects at this position due to insufficient pressure or vacuum.

[0056] It is understandable that the installation method of the lower mold 4 that can move up and down is the existing technology, for example, the lower mold 4 is driven to move up and down by a hydraulic cylinder, and the guide column slides up and down to limit the position. Example 2

[0057] Reference Figure 1 The difference between this embodiment and embodiment 1 is that an integrally formed combined rubber boot mold further includes an upper template 6, which can be movably arranged on the upper surface of the outer mold 1 up and down, and the upper end of the upper core mold 2 is arranged on the upper template 6.

[0058] It should be understood that since the rubber material of the injection-molded boot body has good elasticity after injection molding, when opening the mold, even if the upper core mold 2 does not want to open, under the action of the boot body's own elasticity and the thrust of the lower core mold 3, the upper side of the boot body can be separated from between the upper core mold 2 and the outer mold 1.

[0059] However, before driving the lower core mold 3 to move away from the upper core mold 2, the upper core mold 2 is first driven to open upward by driving the upper mold plate 6. Since the upper core mold 2 is used to form the upper part of the boot shaft of the boot body, that is, the upper core mold 2 has a wide upper and narrow lower structure, when the upper core mold 2 is opened, the gap between the outer side of the upper core mold 2 and the inner side of the outer mold 1 gradually increases. Therefore, when the lower core mold 3 is driven to move away from the upper core mold 2, the upper part of the boot shaft of the boot body is more easily separated from the upper core mold 2 and the outer mold 1, and scratches on the outer side of the boot body can also be avoided.

[0060] It is understandable that the upper template 6 is installed in a movable manner up and down in the prior art, for example, the upper template 6 is driven to move up and down by a hydraulic cylinder, and the guide column slides up and down to limit the position. Example 3

[0061] Reference Figure 1 The difference between this embodiment and embodiment 1 and / or embodiment 2 is that the one-piece molded rubber boot combination mold further includes a bottom mold 7, which is movably disposed at the lower end of the lower mold 4, and an extrusion cavity 400 for extruding the raw material to form the boot sole is formed between the bottom mold 7 and the lower mold 4. Figure 6As shown, when the lower mold 4 is separated from the outer mold 1 and the bottom mold 7 is separated from the lower mold 4, the lower mold 4 can move to the outside of the outer mold 1; when the bottom mold 7 is molded with the outer mold 1, the boot body and the sole are suitable for forming a rubber boot through vulcanization.

[0062] The working principle of this embodiment is as follows: first, the raw material of the molded sole is added to the area corresponding to the extrusion cavity 400 on the bottom mold 7, and then after the mold is closed (such as Figure 1 or Figure 3 As shown in the figure, the raw material in the extrusion cavity 400 is extruded by the lower mold 4 and the bottom mold 7, thereby forming a boot sole; the boot body can be formed by injection molding in the molding cavity 100 between the outer mold 1, the upper core mold 2, the lower core mold 3 and the lower mold 4; then, the bottom mold 7 and the lower mold 4 are driven to move downward, and after the lower mold 4 is separated from the outer mold 1 and the bottom mold 7 is separated from the lower mold 4 (as shown in the figure), the boot sole is formed by injection molding in the molding cavity 100 between the outer mold 1, the upper core mold 2, the lower core mold 3 and the lower mold 4; Figure 5 As shown in FIG. 1 ), the lower mold 4 is driven to move to the outside of the outer mold 1, and then the bottom mold 7 is driven to move upward to close the mold with the outer mold 1 (as shown in FIG. 1 ). Figure 6 As shown in the figure), the boot body and the boot sole are vulcanized to form a rubber boot. Compared with the traditional production process, the one-piece molding combined production process of rubber boots is conducive to simplifying the operation steps, reducing the number of workers and production links, and reducing the production cost exponentially. At the same time, due to one-time injection molding and reducing human factors, the product qualification rate is greatly improved.

[0063] It is understandable that the method of installing the bottom mold 7 so that it can move up and down is a prior art, for example, the bottom mold 7 is driven to move up and down by a hydraulic cylinder, and the guide column slides up and down to limit the position. In addition, the method of installing the lower mold 4 so that it can move up and down and the method of driving the lower mold 4 to move to the outside of the outer mold 1 are both prior art, for example, the opposite sides of the lower mold 4 are horizontally slidably connected to the guide rail, and the guide rail is equipped with a horizontal cylinder or a horizontal hydraulic cylinder for driving the lower mold 4 to slide horizontally, and the guide rail is connected to the support platform through a lifting cylinder or a lifting hydraulic cylinder, and can be lifted and slid and positioned in cooperation with the guide column, then when the lifting cylinder or the lifting hydraulic cylinder drives the guide rail to move up and down, the lower mold 4 can be driven to move up and down; when the lower mold 4 is driven to move horizontally by the horizontal cylinder or the horizontal hydraulic cylinder, the lower mold 4 can be moved to the outside of the outer mold 1. Example 4

[0064] Since the sole of the mold needs to be vulcanized and formed integrally with the boot body, the quality of the raw materials used to form the sole needs to be strictly controlled; too much raw material will cause overflow on the upper edge of the sole, and the overflow will make it impossible to completely close the mold between the bottom mold 7 and the outer mold 1; too little raw material will result in incomplete sole molding, thereby affecting the vulcanization process between the boot body and the sole.

[0065] Reference Figures 8 to 11The difference between this embodiment and embodiment 3 is that, in order to solve the above-mentioned problem, an integrally formed combined rubber boot mold further includes a weighing feeding piece 8 for quantitatively adding raw materials to the area on the bottom mold 7 corresponding to the extrusion cavity 400.

[0066] In this embodiment, if Fig. 9 As shown, the weighing and feeding part 8 includes a funnel 81, a sleeve 82, a pipe 83, a support frame 84, an elastic member 85, a duckbill valve 86, a lower protective cover 87, a pressure detector 88 and a conveying member; the sleeve 82 is sleeved on the outside of the funnel 81, the upper end of the pipe 83 is slidably connected to the inner side of the sleeve 82, and the upper end of the pipe 83 and the lower end of the sleeve 82 cannot be separated; the duckbill valve 86 is built into the upper end of the pipe 83, and the lower protective cover 87 is connected to the lower end of the pipe 83; the elastic member 85 is arranged inside the sleeve 82, and the elastic member 85 is used to make the pipe 83 slide downward; the upper side of the support frame 84 is connected to the funnel 81 or the sleeve 82 through the pressure detector 88, and the conveying member is arranged on the support frame 84, and the conveying member is at least used to convey the support frame 84 to move horizontally and lift.

[0067] The working principle of this embodiment is as follows: under the action of the weighing feeding member 8, the granular raw material is first added into the funnel 81, at this time, under the action of the duckbill valve 86 (such as Fig.10 As shown), the raw materials will not be discharged downward, thereby achieving the function of storing raw materials; the pressure change value can be detected by the pressure detector 88, so that the mass of the raw materials added to the funnel 81 can be obtained by calculation and conversion, so as to achieve accurate control of the added mass of the raw materials, and the feeding operation can be carried out during injection molding or vulcanization, and will not take up extra time; when the mold is opened and the rubber boots are taken out, the support frame 84 can be driven by the conveyor to move in the space until the lower shield 87 moves to the area on the bottom mold 7 corresponding to the extrusion cavity 400, and then the support frame 84 is driven by the conveyor to move downward until the lower shield 87 contacts the bottom mold 7, and the pipeline 83 squeezes the elastic member 85, so that the funnel 81 moves downward relative to the duckbill valve 86 until the lower end of the funnel 81 forces the duckbill valve 86 to open (as shown in FIG. Fig.11 As shown in the figure), the raw materials in the hopper 81 automatically fall onto the bottom mold 7, and the lower shield 87 can prevent the raw materials from spilling. After the automatic feeding action is completed, the conveying member drives the support frame 84 to reset, and under the action of the elastic member 85, the pipeline 83 resets downward, that is, the lower end of the hopper 81 is withdrawn from the duckbill valve 86, and the duckbill valve 86 automatically closes under its own elastic action. This feeding operation does not require manual participation and can be carried out simultaneously with the removal of the rubber boots, which will not take up extra time.

[0068] It is understandable that the pressure detector 88 itself is a prior art, for example, a pressure sensor is used, and a display screen or indicator light or voice broadcast module in the prior art is used to characterize the collected data of the pressure sensor, so as to determine whether the amount of raw material added in the funnel 81 meets the standard. In addition, the conveying member itself is also a prior art, such as a manipulator or a driving mechanism with both lifting and translational motions.

[0069] It should be understood that, in addition to using the weighing feeding piece 8 to feed the raw materials for forming the sole, the raw materials can also be fed manually or directly using a screw extruder. Of course, the form of the raw materials for forming the sole is not limited to the granular state, and can also be in the form of strips, or semi-solids suitable for extrusion by a screw extruder, etc. Example 5

[0070] It should be understood that when the bottom mold 7 is used in the fourth embodiment, it is because the sole of the boot usually needs to withstand greater impact and is required to have wear resistance and puncture resistance, while the boot body requires softness and comfort. Therefore, the materials of the boot body and the sole are usually different, so the bottom mold 7 is used to form the boot body and the sole in one piece. For some rubber boots with low requirements, the boot body and the sole can also be integrally injection molded with the same material. Therefore, the difference between this embodiment and the first embodiment and / or the second embodiment is that the outer mold 1, the lower core mold 3 and the lower mold 4 are suitable for forming the sole of the boot, so that the rubber boot can be integrally injection molded by the mold. Example 6

[0071] The difference between this embodiment and the embodiment 3 or the embodiment 5 is that the upper core mold 2 and the lower core mold are provided with an air channel 500 for inflating the upper surface of the boot sole. Since the mold in the embodiment 3 or the embodiment 6 will eventually form the boot body and the boot sole into one piece to obtain the rubber boot, during demoulding, gas can be flushed in through the air channel 500, and the gas enters the gap between the lower surface of the lower core mold 3 and the upper surface of the boot sole, first separating the upper surface of the boot sole from the lower surface of the lower core mold 3, and then the gas enters the gap between the boot body and the lower core mold 3, thereby separating the boot body from the lower core mold 3, and finally enters the gap between the boot body and the upper core mold 2, thereby separating the boot body from the upper core mold 2, and then facilitating the subsequent removal of the rubber shoe. Example 7

[0072] Reference Figure 7 The difference between this embodiment and any one of the embodiments 1 to 6 is that one side of the outer mold 1 is rotatably disposed on the fixing frame 9; when the bottom mold 7 is separated from the outer mold 1, the outer mold 1 is rotated to an inclined state, and the lower core mold 3 moves away from the upper core mold 2, so as to facilitate the removal of the rubber boots. Preferably, the outer mold 1 is adapted to be rotated to an inclined state toward the toe side of the boot body, and at this time, the worker faces the toe of the boot body, so as to facilitate the removal of the rubber boots more easily.

[0073] It should be understood that when it is not used in conjunction with the bottom mold 7, that is, when only the boot body is injected with the lower mold 4, or when the boot body and the boot sole are injected as one piece with the lower mold 4, after the lower mold 4 is separated from the outer mold 1, the outer mold 1 is first rotated to an inclined state, and the lower core mold 3 then moves away from the upper core mold 2 to facilitate the removal of the rubber boots.

[0074] It is understandable that the rotatable installation method of the outer mold 1 is a prior art, and this application only provides a specific installation method for reference: for example, Figure 7 As shown, one side of the outer mold 1 is hinged to the fixed frame 9, and a telescopic component 600 such as a telescopic cylinder or a telescopic hydraulic cylinder is provided between the fixed frame 9 and the outer mold 1. One end of the telescopic component 600 is hinged to the fixed frame 9, and the other end is hinged to the outer mold 1. By controlling the telescopic amount of the telescopic component 600, the rotation angle of the outer mold 1 can be controlled. Example 8

[0075] Reference Figure 1 , Figure 3 and Figure 4 The difference between this embodiment and any one of embodiments 1-7 is that the same mold is used to form a pair of rubber boots. Example 9

[0076] When the mold is used in conjunction with the bottom mold 7, the present application also provides a production method for an integrally formed combined rubber boot mold, comprising the following steps:

[0077] Loading step: weigh a certain amount of raw materials and add them to the area corresponding to the extrusion cavity 400 on the bottom die 7;

[0078] Mold closing step: Control the lower mold 4 to move between the outer mold 1 and the bottom mold 7, and control the bottom mold 7, the lower mold 4 and the lower core mold 3 to move upward until the mold closing action is completed (such as Figure 1 or Figure 3 ), and the raw material in the extrusion cavity 400 is formed into a shoe sole by extrusion;

[0079] Injection molding step: firstly, vacuumizing the molding cavity 100, and then injecting rubber into the molding cavity 100 through the flow channel 200 to form the boot body by injection molding;

[0080] Vulcanization step: first drive the bottom mold 7 and the lower mold 4 to move downward, wait for the lower mold 4 to separate from the outer mold 1, and the bottom mold 7 to separate from the lower mold 4 (such as Figure 5 As shown in FIG. 1 ), the lower mold 4 is driven to move to the outside of the outer mold 1, and then the bottom mold 7 is driven to move upward to close the mold with the outer mold 1 (as shown in FIG. 1 ). Figure 6 As shown), the boot body and the boot sole are vulcanized to form a rubber boot;

[0081] Demoulding steps: first drive the bottom mould 7 to move downward, then drive the lower core mould 3 to move downward, and then the rubber boots can be taken out.

[0082] In this embodiment, when the outer mold 1 is rotatably arranged, in the demoulding step, Figure 7 As shown, after driving the bottom mold 7 downward, the outer mold 1 is driven to rotate to a tilted state, and the upper surface of the boot sole is inflated through the air channel 500 inside the upper core mold 2 and the lower core film, so that the lower core mold 3 is separated from the upper surface of the boot sole, the lower core mold 3 is separated from the inner side of the boot body, and the upper core mold 2 is separated from the inner side of the boot body by air pressure, and then the lower core mold 3 is driven to move away from the upper core mold 2, so as to more easily remove the rubber boots. Among them, the outer mold 1 preferably rotates to a tilted state on the side beyond the toe.

[0083] In the traditional production method (i.e., the films are bonded separately and then vulcanized), rubber with poor self-adhesiveness (such as EPDM, butyl rubber, chlorosulfonated polyethylene, silicone rubber, etc.) cannot be used, because the use of rubber with poor self-adhesiveness is prone to cracking and other defects in the later stage. However, by adopting the production method of the present application, since the rubber material is extruded and formed in one piece by an injection machine under high pressure, there is no problem that the films need to be bonded to each other, so the types of rubber materials used can be broadened (such as EPDM, butyl rubber, chlorosulfonated polyethylene, silicone rubber, etc.), so that the boots can be given more functions, such as anti-smashing, anti-puncture, flame retardant, high temperature resistant, resistant to various chemical media, anti-radiation, insulating, conductive, anti-static, ozone resistant, etc.

[0084] In addition, the boot body and sole can be made into various colors, and matched with socks of various colors and patterns, which greatly enriches the styles and patterns of boots.

[0085] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of protection claimed by the present application. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An integrated rubber boot mold, characterized in that: The invention comprises an outer mold, an upper core mold, a lower core mold and a lower mold; the outer mold is provided with a cavity from top to bottom, the upper core mold is arranged at the top of the cavity, and the lower core mold can be movably arranged at the bottom of the cavity; the lower mold can be movably arranged at the lower side of the outer mold, a molding cavity for molding a boot body is formed between the outer mold, the upper core mold, the lower core mold and the lower mold, and a flow channel for connecting the molding cavity is formed on the upper core mold; The one-piece molded rubber boot combination mold further includes a bottom mold, which is movably disposed at the lower end of the lower mold, and an extrusion cavity for extruding the raw material to form the boot sole is formed between the bottom mold and the lower mold; When the lower mold is separated from the outer mold, and the bottom mold is separated from the lower mold, the lower mold can move to the outside of the outer mold; when the bottom mold is molded with the outer mold, the boot body and the boot sole are suitable for forming a rubber boot through vulcanization; The one-piece combined rubber boot mold also includes a weighing and feeding piece for quantitatively adding the raw material to the area on the bottom mold corresponding to the extrusion cavity; the weighing and feeding piece includes a funnel, a sleeve, a pipe, a support frame, an elastic piece, a duckbill valve, a lower protective cover, a pressure detector and a conveying piece; the sleeve is sleeved on the outside of the funnel, the upper end of the pipe is slid up and down and connected to the inner side of the sleeve, and the upper end of the pipe is inseparable from the lower end of the sleeve; the duckbill valve is built into the upper end of the pipe, and the lower protective cover is connected to the lower end of the pipe; the elastic piece is arranged inside the sleeve, and the elastic piece is used to make the pipe slide downward; the upper side of the support frame is connected to the funnel or the sleeve through the pressure detector, and the conveying piece is arranged on the support frame, and the conveying piece is at least used to convey the support frame for translation and lifting.

2. The one-piece combined rubber boot mold according to claim 1, characterized in that: The lower end of the upper core mold is provided with a positioning groove of a conical structure, and the upper end of the lower core mold is provided with a positioning portion for adapting to the positioning groove; And / or, the one-piece combined rubber boot mold also includes a driving member for driving the lower core mold to move up and down, the driving member is arranged on the outer mold or the upper core mold, and the driving member is connected to the lower core mold.

3. The one-piece combined rubber boot mold according to claim 1, characterized in that: The mating surface of the upper core mold and the lower core mold passes through the narrowest part of the boot shaft of the boot body; And / or, the flow channel is arranged sequentially along the interior of the upper core mold, the interior of the lower core mold and the lower surface of the lower core mold; And / or, the one-piece molded combined rubber boots mold further comprises an upper mold plate, the upper mold plate can be movably arranged on the upper surface of the outer mold, and the upper end of the upper core mold is arranged on the upper mold plate; And / or, an annular cavity for forming a flash on the upper edge of the inner side of the boot body is provided between the upper core mold and the outer mold, and the annular cavity is suitable for being a structure with a width at the top and a narrowness at the bottom.

4. The one-piece combined rubber boot mold according to claim 1, characterized in that: One side of the outer mold is rotatably arranged on a fixing frame; when the bottom mold is separated from the outer mold, the outer mold is rotated to an inclined state, and the lower core mold moves away from the upper core mold to facilitate the removal of the rubber boot; And / or, air passages for inflating air into the upper surface of the boot sole are provided inside the upper core mold and the lower core mold.

5. The method for producing an integrally formed combined rubber boot mold according to claim 1, characterized in that: The following steps are involved: Loading step: weighing a certain amount of the raw material and adding it to the area on the bottom die corresponding to the extrusion cavity; Mold closing step: controlling the lower mold to move between the outer mold and the bottom mold, and controlling the bottom mold, the lower mold and the lower core mold to move upward until the mold closing action is completed, and the raw material in the extrusion cavity is extruded to form a shoe sole; Injection molding step: firstly evacuate the molding cavity, and then inject rubber into the molding cavity through the flow channel to form the boot body by injection molding; Vulcanization step: firstly drive the bottom mold and the lower mold to move downward, after the lower mold is separated from the outer mold and the bottom mold is separated from the lower mold, drive the lower mold to move to the outside of the outer mold, and then drive the bottom mold to move upward to close the mold with the outer mold, so that the boot body and the boot sole are vulcanized to form a rubber boot; Demoulding step: first drive the bottom mould to move downward, then drive the lower core mould to move downward, and then the rubber boot can be taken out.

6. The method for producing an integrally formed combined rubber boot mold according to claim 5, characterized in that: In the demoulding step, after driving the bottom mold to move downward, the outer mold is driven to rotate to an inclined state, and air is inflated toward the upper surface of the boot sole through the air passages inside the upper core mold and the lower core mold, so that the lower core mold is separated from the upper surface of the boot sole, the lower core mold is separated from the inner side of the boot body, and the upper core mold is separated from the inner side of the boot body by air pressure, and then the lower core mold is driven to move in a direction away from the upper core mold, so that the rubber boots can be taken out more easily.

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