A mold for the continuous forming of popcorn with the cob

Abstract

The present invention relates to a mold for forming popcorn with connected sides, including an upper mold and a lower mold. The interior of the lower mold is provided with a forming cavity and a feed cavity communicating with the forming cavity. The bottom of the forming cavity is provided with a last whose edge is hermetically connected thereto. The surface of the last has a number of through holes, and a channel or cavity communicating with the through holes is provided inside the last. The bottom surface of the upper mold is provided with a forming surface and a feed pipe. The forming surface is correspondingly arranged with the forming cavity and is located on the top surface of the forming cavity to seal the forming cavity. The feed pipe is correspondingly arranged in terms of shape and position with the feed cavity, and a feed port communicating with the feed cavity is provided at the end of the feed pipe. By adding the structures of the feed cavity and the feed pipe, the present invention can feed the popcorn raw materials into the interior of the forming cavity. At the same time, when the mold is closed, the feed port of the feed pipe will also be sealed, and steam is sent into the interior of the forming cavity through the through holes on the surface of the last during the forming process, so as to meet the process temperature of the popcorn raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of shoe-making molds, and particularly relates to a mold for popcorn integral molding. Background Art

[0002] In the prior art, when connecting the sole made of popcorn material with the upper and rubber sheet, it is realized by an adhesive method, and the adhesive operation is carried out manually. Due to different abilities of the operators, it is very difficult to ensure the quality of the final product. However, for the sole made of PU material, it can be formed by an injection molding process and achieve non-adhesive bonding with the upper and rubber sheet, and the molding process has a high degree of standardization and the product quality is guaranteed; for the material, the popcorn material has good elasticity and becomes the first choice for sole materials, but it cannot be realized by the existing molds during the molding process. Summary of the Invention

[0003] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a mold for popcorn integral molding, which is used to realize non-adhesive bonding of the sole made of popcorn material with the upper and rubber sheet.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A mold for popcorn integral molding, comprising an upper mold and a lower mold, and characterized in that:

[0006] A molding cavity and a feed cavity communicating with the molding cavity are arranged inside the lower mold. A last is arranged at the bottom of the molding cavity, and the edge of the last is hermetically connected to the bottom of the molding cavity. A plurality of through holes are arranged on the surface of the last, and a channel or cavity communicating with the through holes is arranged inside the last;

[0007] A molding surface and a feed pipe are arranged on the bottom surface of the upper mold. The molding surface is arranged corresponding to the molding cavity and hermetically seals the molding cavity at the top surface of the molding cavity. The feed pipe is arranged corresponding to the feed cavity in terms of shape and position, and a feed port communicating with the feed cavity is arranged at the end of the feed pipe.

[0008] The lower mold comprises a lower mold shell and two groups of split molds located on both sides of the last. The two groups of split molds are located inside the lower mold shell, and the two groups of split molds are connected by an elastic member. Both sides of the elastic member are in contact connection with the two groups of split molds respectively, and a gap is arranged between the two groups of split molds.

[0009] The elastic member is located on the connecting surface between the two groups of split molds, and a groove for accommodating the elastic member is arranged on the connecting surface of at least one group of the split molds.

[0010] The two sets of split molds are also connected by at least one set of guide shafts. The axial direction of the guide shafts is arranged parallel to the moving direction of the split molds, and the guide shafts respectively pass through the two sets of split molds and are slidably connected to the two sets of split molds. The two ends of the guide shafts are respectively connected and fixed to the lower mold housing.

[0011] A positioning block connected to the bottom surface of the upper mold is provided. At the inner bottom end of the positioning block, a positioning surface corresponding to the lower mold is provided. The lower part of the positioning surface is inclined away from the lower mold, and the positioning surface contacts the outer edge of the lower mold in the closed mold state and presses and closes the two sets of split molds of the lower mold towards the middle.

[0012] On the forming surface of the upper mold, a groove body matching the shape of the protrusions on the surface of the rubber sheet is also provided, and the protrusions of the rubber sheet are inserted into the groove body and are connected and fixed to the upper mold.

[0013] It further includes a mold housing, and the upper mold and the lower mold are respectively placed inside their respective mold housings and are connected and fixed to the mold housings.

[0014] The beneficial effects of the present invention are as follows: The structure is reasonably designed. By adding the structures of the feeding cavity and the feeding pipe, the popcorn raw materials can be fed into the forming cavity. At the same time, when the mold is closed, the feeding port of the feeding pipe will also be sealed, ensuring its feeding effect. During the forming process, steam is sent into the forming cavity through the through holes on the surface of the last, so as to meet the process temperature of the popcorn raw materials, enabling them to be formed inside the forming cavity and achieving glue-free bonding with the rubber sheet pre-fixed inside the forming cavity, thus avoiding the disadvantages of the glue connection process. Description of the Drawings

[0015] The present invention will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 It is a schematic structural diagram of the present invention.

[0017] Figure 2 It is a schematic bottom surface structure diagram of the upper mold and the fixed mold housing.

[0018] Figure 3 It is a schematic bottom surface structure diagram of the lower mold and the moving mold housing.

[0019] Figure 4 It is an axonometric structural diagram of the lower mold and the moving mold housing.

[0020] Figure 5 It is an axonometric structural diagram of the lower mold (without movable split molds) and the moving mold housing.

[0021] Figure 6 It is a schematic cross-sectional structure diagram of the middle part of the present invention.

[0022] Figure 7 This is a schematic cross-sectional structure diagram of the feeding position of the present invention.

[0023] In the figure: 100 is a fixed mold housing, 200 is a movable mold housing, 300 is an upper mold, 301 is a forming surface, 302 is a feed pipe, 303 is a positioning block, 401 is a movable split mold, 402 is a fixed split mold, 403 is a last, 404 is a guide shaft, 405 is an elastic member, 406 is a feed cavity, 407 is a wear-resistant block, 408 is a lower mold housing, 500 is a rubber sheet. Specific Embodiments

[0024] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0025] According to Figures 1 to 7 As shown: This embodiment provides a mold for forming popcorn continuous upper, including an upper mold 300, a lower mold, a fixed mold housing 100 and a movable mold housing 200. The upper mold 300 is located in the upper part and installed on the bottom surface of the fixed mold housing 100. The lower mold is located in the lower part and on the top surface of the movable mold housing 200. During the use process, it is necessary to install and fix the fixed mold housing 100 and the movable mold housing 200 on a press. At this time, the movable mold housing 200 will drive the lower mold to move vertically up and down, so as to cooperate with the upper mold 300 in the fixed mold housing 100 to form a closed forming structure. The specific implementation structures of the upper mold 300 and the lower mold are as described below.

[0026] The lower mold is internally provided with a forming cavity and a feed cavity 406 communicating with the forming cavity. Among them, there are two groups of forming cavities and they are respectively located on both sides, while the feed cavity 406 is located at the middle rear side of the two groups of forming cavities. Both sides of the feed cavity 406 are open and communicate with the forming cavity, for transporting popcorn raw materials from the feed cavity 406 to the inside of the forming cavity;

[0027] The bottom of the forming cavity is provided with a last 403 whose edge is hermetically connected thereto. The surface of the last 403 has a number of uniformly distributed through holes. The opening area of the through holes is small and the number is large, so as to reduce the influence on the surface quality of the sole product. And the inside of the last 403 is provided with a cavity communicating with the through holes. The cavity communicates with each through hole respectively. At the same time, the bottom of the cavity is also communicated with an external steam channel. High-temperature and high-pressure steam enters the inside of the forming cavity uniformly through a number of through holes to meet the process requirements of popcorn raw materials.

[0028] Furthermore, the lower mold includes a lower mold housing 408 and two sets of split molds located on both sides of the shoe last 403. The two sets of split molds are located inside the lower mold housing 408. In this embodiment, since there are two forming cavities, the two sets of split molds located between the two forming cavities are processed into an integral structure to form a fixed split mold 402. The bottom of the fixed split mold 402 is fixedly connected to the lower mold housing 408. At the same time, the shoe last 403 located inside the forming cavity is also fixedly connected to the inner wall of the lower mold housing 408. The two sets of split molds on the outside form movable split molds 401, and the two sets of movable split molds 401 are connected to the fixed split mold 402 through elastic members 405. The elastic members 405 are springs. The elastic members 405 are located on the connecting surfaces between the two sets of split molds, and grooves for accommodating the elastic members 405 are provided on the connecting surfaces of the two sets of movable split molds 401 and the fixed split mold 402. The grooves are correspondingly arranged and overlapped, so that both ends of the elastic member 405 are respectively assembled inside the grooves. Both sides of the elastic member 405 are kept in contact connection with the movable split mold 401 and the fixed split mold 402, and there is a gap of about 5 mm between the movable split mold 401 and the fixed split mold 402.

[0029] In the above structure, the adoption of the split molds with a split structure is mainly used to meet the installation of the shoe last 403. The outside of the shoe last 403 is used to fix the upper. After the sole is formed, it needs to be removed. However, when the structure of the lower mold is stable, it cannot meet its installation and normal demolding operations. By using the gap between the split molds, a certain amount of movable space can be provided around the shoe last 403, so that the upper and the sole can be removed outside the shoe last 403, and a new upper can be installed for operation.

[0030] Furthermore, since the movable split mold 401 needs to move left and right, in order to maintain the stability and accuracy of the movement effect, the movable split mold 401 and the fixed split mold 402 are also connected through two guide shafts 404. The guide shafts 404 are horizontally distributed and are located on the front side and the rear side respectively. The axial direction of the guide shafts 404 is parallel to the moving direction of the split molds, and the guide shafts 404 respectively pass through the two sets of split molds and are slidably connected to the two sets of split molds. Both ends of the guide shafts 404 are fixedly connected to the lower mold housing 408. In the above structure, the coaxial distribution of the guide shafts 404 and the elastic members 405 also needs to be maintained, that is, the guide shafts 404 need to pass through the springs. On the one hand, the springs can be supported inside to prevent the springs from deforming. On the other hand, channels for the guide shafts 404 to pass through are processed in the grooves where the springs are located, reducing the processing difficulty of the mold.

[0031] Furthermore, in the case of the closed mold operation, it is necessary to keep the gap between the movable split mold 401 and the fixed split mold 402 airtight, so that the movable split mold 401 and the fixed split mold 402 form a complete mold for the sole molding operation. At this time, in order to ensure the sliding effect of the movable split mold 401, a positioning block 303 connected thereto is provided on the bottom surface of the upper mold 300. There are four groups of positioning blocks 303 located at the front and rear ends on both sides respectively. An inner bottom end of the positioning block 303 is provided with a positioning surface corresponding to the lower mold. The lower part of the positioning surface is inclined away from the lower mold, and the positioning surface contacts the outer edge of the lower mold in the closed mold state. The outer edge of the lower mold is provided with a wear-resistant block 407 for contacting the positioning surface. Since the whole lower mold is made of aluminum, the wear-resistant block 407 can play a wear-resistant role. Under the action of the positioning surface, the two groups of movable split molds 401 of the lower mold are pressed tightly towards the middle to close the lower mold, so that the movable split molds 401 move inward and close with the fixed split mold 402, so that the forming cavity is airtight and normal operation can be carried out.

[0032] A forming surface 301 and a feed pipe 302 are provided on the bottom surface of the upper mold 300. The forming surface 301 corresponds to the forming cavity and is located on the top surface of the forming cavity to airtight the forming cavity. Only after the forming cavity and the forming surface 301 are matched can a complete forming space be formed to achieve the complete shape of the sole. The feed pipe 302 corresponds to the shape and position of the feed cavity 406. An end of the feed pipe 302 is provided with a feed port communicating with the feed cavity 406. The feed port is located at the bottom end of the feed pipe 302. After the upper mold 300 and the lower mold are airtight, the feed pipe 302 is inserted into the feed cavity 406 and airtight the feed cavity 406. At this time, the feed port of the feed pipe 302 is also airtight by the bottom surface of the feed cavity 406, and the popcorn raw material cannot be conveyed into it anymore.

[0033] Furthermore, a groove body matching the surface protrusion shape of the rubber sheet 500 is further provided on the forming surface 301 of the upper mold 300, and the protrusion of the rubber sheet 500 is inserted into the groove body and connected and fixed with the upper mold 300. This structure can fix the rubber sheet 500 on the upper mold 300 in advance without affecting the use of the upper mold 300.

[0034] In the actual use process of a mold for popcorn integral forming provided by the above structure, the specific operation steps are as follows:

[0035] First, fix the rubber sheet 500 on the forming surface 301 of the upper mold 300, and fix the shoe upper on the outside of the shoe last 403;

[0036] Start the press. The lower mold moves upward. After the bottom surface of the upper mold 300 overlaps with the top surface of the lower mold to achieve preliminary sealing, popcorn raw materials are conveyed into the feeding cavity 406 through high-pressure air through the feeding port at this time. The popcorn raw materials enter the forming cavities on both sides respectively. During this process, the lower mold continues to move upward until the feeding port contacts and seals the inner wall of the feeding cavity 406. At this time, the upper mold 300 and the lower mold are completely closed, and the forming surface 301 and the forming cavity form a sealed forming space;

[0037] Then, open the steam pipeline. The steam enters the cavity inside the last 403 and enters the inside of the forming cavity through the through holes. At this time, the popcorn raw materials are formed under the action of temperature and pressure and are bonded and fixed to the shoe upper and the rubber sheet 500;

[0038] Finally, open the lower mold to take out the last 403, and then take off the finished shoes.

[0039] The above is only the preferred implementation mode of the present invention. As long as the technical solutions that achieve the purpose of the present invention by basically the same means are within the protection scope of the present invention.

Claims

1. A mold for forming popcorn with connected bases, comprising an upper mold and a lower mold, characterized in that: A forming cavity and a feed cavity communicating with the forming cavity are provided inside the lower mold. A last is provided at the bottom of the forming cavity with its edge hermetically connected thereto. A number of through holes are provided on the surface of the last, and a channel or cavity communicating with the through holes is provided inside the last; A forming surface and a feed pipe are provided on the bottom surface of the upper mold. The forming surface is correspondingly arranged with the forming cavity and is located on the top surface of the forming cavity to hermetically seal the forming cavity. The feed pipe is correspondingly arranged in shape and position with the feed cavity, and a feed port communicating with the feed cavity is provided at the end of the feed pipe; The lower mold includes a lower mold housing and two sets of split molds located on both sides of the last. The two sets of split molds are located inside the lower mold housing, and the two sets of split molds are connected by an elastic member. Both sides of the elastic member are in contact connection with the two sets of split molds respectively, and a gap is provided between the two sets of split molds; After the upper mold and the lower mold are hermetically sealed, the feed pipe is inserted into the feed cavity and the feed cavity is hermetically sealed. At this time, the feed port of the feed pipe is also sealed by the bottom surface of the feed cavity, and popcorn raw materials cannot be further conveyed into the interior; The elastic member is located on the connection surface between the two sets of split molds, and a groove for accommodating the elastic member is provided on the connection surface of at least one set of the split molds; A positioning block connected to the bottom surface of the upper mold is provided. An inner bottom end of the positioning block is provided with a positioning surface correspondingly arranged with the lower mold. The lower part of the positioning surface is inclined away from the lower mold, and the positioning surface is in contact with the outer edge of the lower mold in the closed mold state and presses tightly against the two sets of split molds of the lower mold towards the middle; A groove matching the shape of the protrusion on the surface of the rubber sheet is further provided on the forming surface of the upper mold, and the protrusion of the rubber sheet is inserted into the groove and fixedly connected to the upper mold.

2. The mold for forming popcorn with connected bases according to claim 1, characterized in that: The two sets of split molds are also connected by at least one set of guide shafts. The axial direction of the guide shafts is arranged parallel to the moving direction of the split molds, and the guide shafts respectively pass through the two sets of split molds and are slidably connected to the two sets of split molds. Both ends of the guide shafts are fixedly connected to the lower mold housing.

3. A mold for forming popcorn connected bases according to claim 1, characterized in that: A mold housing is further included, and the upper mold and the lower mold are respectively placed inside their respective mold housings and fixedly connected to the mold housings.

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