Mould for full-rubber boots for sole and vamp double-color injection molding
By designing molds for bottom and surface injection molding, using partition plate components and rubber running groove technology, the problem of insufficient strength in the sole and shoe surface glue at the boundary is solved, and clear color demarcation and efficient automated production are achieved.
Patent Information
- Application Number
- CN202423110740.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In the prior art, it is difficult to clearly separate the sole and the shoe surface glue at the boundary using the mold with the existing one-injection structure, and the combination strength is insufficient, resulting in poor appearance and use effect, and low degree of automation.
A mold including a bottom mold, a partition assembly and a shoe surface mold assembly is designed. Different glues are injected separately through the coordination of the partition plate upper plate, the partition middle plate and the partition lower plate of the partition plate assembly, and the excess glue is overflowed through the rubber run groove to ensure that the sole and the boot surface form a clear color boundary at the boundary.
It achieves a clear boundary between the sole and the boot surface of the material at the boundary, improves the appearance and usage effect, and improves the degree of automation.
Smart Images
Figure CN223302131U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of rubber boot molds, in particular to a full rubber boot mold for double-color injection molding of bottoms and surfaces. Background Art
[0002] Rubber boots have a wide range of applications in the mining, power and other industries due to their irreplaceable advantages over other materials, such as good aging resistance, cold resistance, insulation performance, good comprehensive physical properties, and soft and skin-friendly sensory experience. The existing manufacturing processes of full rubber boots mainly include injection, molding, manual paving and vulcanization. Due to the usage characteristics of the boots themselves, the boot upper and sole have different performance requirements. The boot upper needs to be softer and have high tearing strength, and the boot sole needs to be non-slip, wear-resistant, and have higher hardness. Therefore, the formulas of the sole and surface are different, resulting in different rubber materials. The sole and surface rubber materials use different color combinations to improve the appearance of the boots. In the existing process, manual laying and then vulcanization can meet the requirements of double-color and double-material soles and uppers, but it has certain disadvantages. The first disadvantage is that the process is long, and the overall process requires more than 20 working steps such as mixing, calendering, cutting, patching, cold gluing, and vulcanization. The second disadvantage is that it is highly dependent on manual labor and has a very low degree of automation. The third disadvantage is that the product quality stability is poor, and it is easy to cause problems such as degumming and falling off, and the appearance stability is poor. The molding process can meet the requirements of double-material soles and uppers, but because the total amount of rubber needs to be slightly larger than the total amount of the mold cavity when adding material to meet the requirement of filling the mold, and the flow of rubber in the mold after closing the mold cannot be controlled, so the rubber is still chaotic at the junction of the bottom and surface and even in a larger range, and the double-color and double-material effect with clear boundaries cannot be achieved. Among various rubber molding processes, injection molding is the simplest, most automated, and most stable. Existing injection molding processes for all-rubber boots utilize a single-shot injection molding process using the same rubber compound for both the sole and upper. Because rubber exhibits high fluidity before vulcanization and the injection pressure is high, it is difficult to vulcanize the two components into one piece at the boundary using existing single-shot molds. This makes it difficult to achieve a strong bond and clearly distinguish the colors, resulting in a desired appearance and performance. Improving these issues has become a pressing issue for those skilled in the art. Utility Model Content
[0003] In order to make up for the above shortcomings, the utility model provides a full rubber boot mold for double-color injection molding of the sole and the upper, aiming to improve the problem that when the sole and the upper are made of two kinds of rubber materials, it is difficult to vulcanize the two into one at the boundary using the existing one-time injection structure mold, and it is difficult to achieve good bonding strength and clear separation in color to present a better use effect and appearance effect.
[0004] The utility model is implemented as follows: a full rubber boot mold for double-color injection molding of the bottom and surface, including a bottom mold, a partition plate assembly and a boot surface mold assembly, the bottom mold is detachably connected and installed on the upper end of the partition plate assembly, the boot surface mold assembly is detachably connected and installed on the bottom end of the partition plate assembly, the partition plate assembly is used to inject glue into the bottom mold and the boot surface mold assembly, the bottom mold is used to mold the sole, and the boot surface mold assembly is used to mold the upper.
[0005] In the preferred technical solution of the present invention, the partition plate assembly includes a partition plate upper plate, a partition plate middle plate and a partition plate lower plate, the partition plate upper plate is hingedly installed on the upper end of the partition plate middle plate, the partition plate lower plate is hingedly installed on the bottom end of the partition plate middle plate, the partition plate upper plate and the partition plate lower plate are both provided with glue injection ports, the partition plate upper plate and the partition plate lower plate are both provided with glue flow channels, and the partition plate upper plate and the partition plate lower plate are connected to the bottom mold and the boot surface mold assembly through the glue flow channels.
[0006] In the preferred technical solution of the present invention, the upper plate and the middle plate of the partition panel, as well as the middle plate and the lower plate of the partition panel are hinged by hinges and fixed by bolts. The upper plate, the middle plate and the lower plate of the partition panel adopt a three-section type, which is divided into three parts: upper, middle and lower. The hinge is used as a rotation axis and is fixed with screws. The upper plate and the lower plate of the partition panel are both opened at one end and are detachably installed with a sealing cover, and are fixed by bolts. They can be opened separately, and the internal rubber material can be easily cleaned. The rubber material is injected into the bottom mold and formed through the glue injection port and the glue flow channel set on the upper plate of the partition panel. At the same time, by separating the upper plate and the lower plate of the partition panel and setting different glue injection ports, different glues can be injected into the bottom mold and the boot upper mold assembly, so that the sole and the shoe body can form different materials and colors when the materials are different.
[0007] In the preferred technical solution of the present invention, the middle plate of the partition plate is provided with a water flow channel and water inlets and water outlets are provided on both sides of the middle plate of the partition plate. The water flow channel of the middle plate of the partition plate is configured as a cooling water or oil flow channel. According to usage requirements, cooling water or hot oil is injected into the water flow channel in the middle plate of the partition plate through the water inlets and water outlets provided on both sides of the middle plate of the partition plate to enhance the molding speed and effect of the device.
[0008] In the preferred technical solution of the present invention, the boot upper mold assembly includes a last male mold and a last female mold, a boot upper molding gap is provided between the last male mold and the last female mold, and the lower plate of the partition plate is connected to the boot upper molding gap through a rubber flow channel.
[0009] In the preferred technical solution of the present invention, the widths of one end of the upper plate of the partition plate, the middle plate of the partition plate and the lower plate of the partition plate are all greater than the bottom mold and the boot surface mold assembly. The width of the partition plate assembly after folding and forming the upper plate of the partition plate, the middle plate of the partition plate and the lower plate of the partition plate is greater than the bottom mold and the boot surface mold assembly, and the partition plate assembly is connected to the external slide rail. When the glue injection work is completed, the bottom mold is lifted, and the partition plate assembly is pulled backward by the equipment through the connection to the external slide rail.
[0010] In the preferred technical solution of the present invention, the bottom mold and the boot upper mold assembly are both provided with glue running grooves. When the bottom mold, the partition plate assembly and the boot upper mold assembly are all closed, the glue is injected into the bottom mold and the boot upper molding gaps respectively through the two glue injection ports. After filling the cavities respectively, the bottom mold is lifted, the partition plate assembly is lifted as a whole and pulled backward by the equipment through the connecting slide rail. The bottom mold falls and the boot upper mold assembly is combined into a whole. Since the actual amount of glue in the upper and lower cavities is greater than the amount of glue required to be formed into the boot body itself, when the mold is closed and squeezed, the excess glue overflows through the reserved glue running groove. Since the two streams of glue on the sole and the boot upper are subjected to an equal pair of forces at the same time, the two will overflow at the same time, forming a mutual force at the boundary and a dividing line with two clear color boundaries. At this time, the rubber begins to vulcanize, and the sole and the boot upper become one under the action of temperature, pressure and time.
[0011] The beneficial effects of the present invention are as follows: the present invention obtains a full rubber boot mold for double-color injection molding of soles and surfaces through the above-mentioned design. When in use, the upper end of the upper plate of the partition plate abuts against the edge of the cavity of the bottom mold to form a closed space, and the bottom end of the lower plate of the partition plate abuts against the edge of the sole of the last male mold to form a closed space. The rubber material is injected into the molding gap of the bottom mold and the boot surface through the two injection ports respectively. After the cavities are filled respectively, the bottom mold is lifted, the partition plate assembly is lifted as a whole and is pulled backward by the equipment through the connecting slide rail. The bottom mold falls and is combined with the boot surface mold assembly into a whole. When the mold is squeezed, the excess rubber material overflows through the reserved rubber running groove. Since the two rubber materials of the sole and the boot surface are subjected to a pair of equal forces at the same time, the two will overflow at the same time, forming a mutual force at the boundary and a dividing line with clear boundaries of two colors. When two kinds of rubber materials are used for the sole and the upper of the boot, the device can cooperate with the bottom mold, the partition plate assembly and the upper mold assembly to better vulcanize the boundary between the sole and the upper into one, and form a clear dividing line between the two colors, thereby improving the appearance and use effect, having a high degree of automation and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0013] Figure 1 This is a schematic diagram of the structure of a full rubber boot mold for double-color injection molding of the bottom and top provided by the embodiment of the utility model. Figure 1 .
[0014] Figure 2 This is another structural schematic diagram of a mold for full rubber boots used for double-color injection molding of the bottom and top provided by an embodiment of the utility model.
[0015] Figure 3 A schematic diagram of the structure of a full rubber boot mold for bottom and surface double-color injection molding provided by the present utility model Figure 2 .
[0016] In the figure: 100, bottom mold; 200, partition plate assembly; 210, partition plate upper plate; 211, glue injection port; 212, glue flow channel; 213, slide rail; 220, partition plate middle plate; 230, partition plate lower plate; 300, boot upper mold assembly; 310, last male mold; 320, last female mold; 330, boot upper molding gap. DETAILED DESCRIPTION
[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0018] See also Figure 1-Figure 3 The utility model provides a technical solution: a full rubber boot mold for double-color injection molding of the bottom and surface, including a bottom mold 100, a partition plate assembly 200 and a boot surface mold assembly 300. The bottom mold 100 is detachably connected and installed on the upper end of the partition plate assembly 200, and the boot surface mold assembly 300 is detachably connected and installed on the bottom end of the partition plate assembly 200. The partition plate assembly 200 is used to inject glue into the bottom mold 100 and the boot surface mold assembly 300. The bottom mold 100 is used to mold the sole, and the boot surface mold assembly 300 is used to mold the upper.
[0019] In some specific embodiments, the partition plate assembly 200 includes a partition plate upper plate 210, a partition plate middle plate 220 and a partition plate lower plate 230. The partition plate upper plate 210 is hingedly installed on the upper end of the partition plate middle plate 220, and the partition plate lower plate 230 is hingedly installed on the bottom end of the partition plate middle plate 220. The partition plate upper plate 210 and the partition plate lower plate 230 are both provided with a glue injection port 211, and the partition plate upper plate 210 and the partition plate lower plate 230 are both provided with a glue flow channel 212, and the partition plate upper plate 210 and the partition plate lower plate 230 are connected to the bottom mold 100 and the boot mold assembly 300 through the glue flow channel 212.
[0020] In some specific embodiments, the partition plate upper plate 210 and the partition plate middle plate 220, as well as the partition plate middle plate 220 and the partition plate lower plate 230 are hinged by hinges and fixed by bolts. The partition plate upper plate 210, the partition plate middle plate 220 and the partition plate lower plate 230 adopt a three-section type, which is divided into three parts: upper, middle and lower. The hinge is used as a rotation axis and is fixed with screws. The partition plate upper plate 210 and the partition plate lower plate 230 are both opened at one end and are detachably installed with a sealing cover, and are fixed by bolts. They can be opened separately, and the internal rubber material can be easily cleaned. The rubber injection port 211 and the rubber flow channel 212 set on the partition plate upper plate 210 cooperate to inject the rubber into the bottom mold 100 and form it. At the same time, by separating the partition plate upper plate 210 and the partition plate lower plate 230 and setting different rubber injection ports, different rubbers can be injected into the bottom mold 100 and the boot upper mold assembly 300, so that the sole and the shoe body can form different materials and colors when the materials are different.
[0021] In some specific embodiments, the partition plate middle plate 220 is provided with a water flow channel and water inlets and water outlets are provided on both sides of the partition plate middle plate 220. The partition plate middle plate 220 is provided with a water flow channel configured as a cooling water or oil flow channel. According to usage requirements, cooling water or hot oil is injected into the water flow channel in the partition plate middle plate 220 through the water inlets and water outlets provided on both sides of the partition plate middle plate 220 to enhance the molding speed and effect of the device.
[0022] In some specific embodiments, the shoe upper mold assembly 300 includes a male last mold 310 and a female last mold 320 , a shoe upper forming gap 330 is provided between the male last mold 310 and the female last mold 320 , and the lower plate 230 of the partition plate is connected to the shoe upper forming gap 330 through the rubber flow channel 212 .
[0023] In some specific embodiments, the widths of one end of the partition plate upper plate 210, the partition plate middle plate 220 and the partition plate lower plate 230 are all greater than the bottom mold 100 and the boot mold assembly 300. After the partition plate upper plate 210, the partition plate middle plate 220 and the partition plate lower plate 230 are folded and formed, the width of the partition plate assembly 200 is greater than the bottom mold 100 and the boot mold assembly 300, and the partition plate assembly 200 is connected to the external slide rail 213. When the glue injection work is completed, the bottom mold 100 is lifted, and the partition plate assembly 200 is pulled backward by the equipment through the connection to the external slide rail.
[0024] In some specific embodiments, the bottom mold 100 and the boot upper mold assembly 300 are both provided with glue running grooves. When the bottom mold 100, the partition plate assembly 200 and the boot upper mold assembly 300 are all closed, the glue is injected into the bottom mold 100 and the boot upper molding gap 330 respectively through the two glue injection ports 211. After filling the mold cavities respectively, the bottom mold 100 is lifted, the partition plate assembly 200 is lifted as a whole and pulled backward by the equipment through the connecting slide rail 213, and the bottom mold 100 falls and becomes a whole with the boot upper mold assembly 300. Since the actual amount of glue in the upper and lower mold cavities is greater than the amount of glue required to be formed into the boot body itself, when the mold is closed and squeezed, the excess glue overflows through the reserved glue running groove. Since the two streams of glue on the sole and the boot upper are subjected to a pair of equal forces at the same time, the two will overflow at the same time, forming a mutual force at the boundary with two clear color boundaries. At this time, the rubber begins to vulcanize, and the sole and the boot upper become one under the action of temperature, pressure and time.
[0025] Working principle: When in use, the upper end of the upper plate 210 of the partition plate presses against the edge of the cavity of the bottom mold 100 to form an enclosed space, and the bottom end of the lower plate 230 of the partition plate presses against the edge of the sole of the last male mold 310 to form an enclosed space. The rubber is injected into the bottom mold 100 and the boot upper molding gap 330 respectively through the two glue injection ports 211. After filling the cavities respectively, the bottom mold 100 is lifted, the partition plate assembly 200 is lifted as a whole and pulled backward by the equipment through the connecting slide rail 213. The bottom mold 100 falls and is combined with the boot upper mold assembly 300 into a whole. When the mold is squeezed, the excess rubber overflows through the reserved rubber running groove. Since the two rubbers of the sole and the boot upper are subjected to a pair of equal forces at the same time, the two will overflow at the same time, forming a mutual force at the boundary and a dividing line with two clear color boundaries.
[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A mold for full rubber boots used for double-color injection molding of bottom and surface, characterized in that: It includes a bottom mold, a partition plate assembly and a boot upper mold assembly. The bottom mold is detachably connected and installed on the upper end of the partition plate assembly. The boot upper mold assembly is detachably connected and installed on the bottom end of the partition plate assembly. The partition plate assembly is used to inject glue into the bottom mold and the boot upper mold assembly. The bottom mold is used to shape the sole, and the boot upper mold assembly is used to shape the upper.
2. A full rubber boot mold for bottom and surface double-color injection molding according to claim 1, characterized in that: The partition plate assembly includes a partition plate upper plate, a partition plate middle plate and a partition plate lower plate, the partition plate upper plate is hingedly installed on the upper end of the partition plate middle plate, the partition plate lower plate is hingedly installed on the bottom end of the partition plate middle plate, the partition plate upper plate and the partition plate lower plate are both provided with glue injection ports, the partition plate upper plate and the partition plate lower plate are both provided with glue flow channels, and the partition plate upper plate and the partition plate lower plate are connected to the bottom mold and the shoe surface mold assembly through the glue flow channels.
3. The mold for full rubber boots for bottom and surface double-color injection molding according to claim 2, characterized in that: The upper plate and the middle plate of the partition plate, as well as the middle plate and the lower plate of the partition plate are hinged by hinges and fixed by bolts.
4. The mold for full rubber boots for bottom and surface double-color injection molding according to claim 2, characterized in that: The middle plate of the partition plate is provided with a water flow channel, and both sides of the middle plate of the partition plate are provided with a water inlet and a water outlet.
5. The mold for full rubber boots for bottom and surface double-color injection molding according to claim 1, characterized in that: The boot upper mold assembly comprises a last male mold and a last female mold, and a boot upper forming gap is provided between the last male mold and the last female mold.
6. The mold for full rubber boots for bottom and surface double-color injection molding according to claim 2, characterized in that: The widths of one end of the upper plate of the partition plate, the middle plate of the partition plate and the lower plate of the partition plate are all greater than the bottom mold and the shoe surface mold assembly.
7. The mold for full rubber boots for bottom and surface double-color injection molding according to claim 1, characterized in that: The bottom mold and the shoe upper mold assembly are both provided with glue running grooves.