Kidney-shaped structure forming die

Abstract

The invention relates to the field of dies, and provides a kidney-shaped structure forming die which comprises an upper die and a lower die. A forming cavity is formed in the upper mold, and a pouring piece is arranged at the top of the upper mold and extends into the forming cavity; the lower die is provided with an ejection assembly, and the ejection assembly is connected with the upper die; the forming cavity is divided into an S-shaped cavity and a plurality of communicating cavities, the communicating cavities communicate with the S-shaped cavity, and the S-shaped cavity extends in the direction away from one side of the pouring part; the upper die further comprises a first forming piece, and the first forming piece is connected with the pouring piece in a sliding mode. The S-shaped cavity is formed in the first forming part, a part of the communicating cavity is located in the first forming part, and the lower die further comprises a second forming part; the second forming part is provided with the other part of the communicating cavity, and when the first forming part and the second forming part are in butt joint, the communicating cavity is complete. The demolding device has a stable demolding effect.

Description

Technical Field

[0001] The present application relates to the field of molds, and in particular to a waist-shaped structure forming mold. Background Art

[0002] The TPU transparent soft rubber waist-shaped structure is generally used for the legs of cribs to provide protection similar to a fence. However, when making this type of waist-shaped structure, a molding mold is required to inject the molten soft rubber into the molding mold and solidify it into shape.

[0003] However, since the waist-shaped structure has an arc, such as an S-shape or a snake-shape, there are too many bends during injection molding, which makes it easy for the upper and lower molds of the mold to affect the newly formed waist-shaped structure during demolding, causing the waist-shaped structure to break or have cracks, making it difficult to guarantee production quality. Summary of the invention

[0004] In order to improve the above-mentioned problems, the present application provides a waist-shaped structure forming mold.

[0005] The present application provides a waist-shaped structure forming die adopting the following technical solution: A waist-shaped structure forming mold, comprising an upper mold and a lower mold; a forming cavity is opened in the upper mold, a casting is arranged on the top, and the casting extends into the forming cavity; the lower mold is provided with an ejector assembly, and the ejector assembly is connected to the upper mold; the forming cavity is divided into an S-shaped cavity and a plurality of connecting cavities, the connecting cavities are connected with the S-shaped cavity, and the S-shaped cavity extends in a direction away from the casting; the upper mold also includes a first molding part, and the first molding part is slidably connected with the casting; the S-shaped cavity is opened in the first molding part, and a part of the connecting cavity is located in the first molding part, and the lower mold also includes a second molding part; the second molding part is opened with the connecting cavity The other part of the cavity, when the first molding part is butt-jointed with the second molding part, the connecting cavity is complete; the ejection assembly includes an ejection structure and a pneumatic structure; the ejection structure passes through the lower mold and the second molding part, and is connected to the first molding part, and the injection material is poured into the molding cavity. After solidification and molding, the ejection structure ejects the first molding part toward the pouring part to loosen the injection material and demold it; the pneumatic structure is connected to the second molding part and provides an airflow to the connecting cavity, and the airflow diffuses in the molding cavity, so that the injection material is separated from the inner wall of the molding cavity by the influence of the airflow and air pressure, and the demolding is completed in cooperation with the ejection structure.

[0006] By adopting the above technical solution, the airflow and appropriate air pressure are diffused in the molding cavity, so that the injection molding material that is still softened in a high temperature state and stubbornly attached to the inner wall of the molding cavity is blown and separated by the airflow, and the injection molding material is separated from the inner wall of the molding cavity under the influence of air pressure and airflow, and a stable demoulding effect is achieved in cooperation with the ejection structure.

[0007] Optionally, the second molded part includes a vent seat, a stabilizing seat and a positioning seat; the positioning seat is provided with a plurality of guide openings, and the ejection structure is slidably connected to the guide openings; the vent seat is installed on the positioning seat, and the vent seat is provided with a vent cavity, and the vent cavity is connected to the pneumatic structure; the stabilizing seat is connected to the vent seat, and part of the connecting cavity is located on the stabilizing seat.

[0008] By adopting the above technical solution, the ejection structure pushes the first molded part upward along the guide port, the injection molding material is protected by the injection molding material in the connecting cavity part of the upper part of the stabilizing seat, the starting structure conveys the airflow to the connecting cavity at the stabilizing seat through the vent cavity, and the injection molding material is separated from the sticky connecting cavity part by the airflow, and then the first molded part is separated from the second molded part by the action of the ejection structure to achieve the demolding effect, and in the demolding process, the injection molding material is protected to ensure the integrity of the injection molding material.

[0009] Optionally, the ejection structure includes an ejection plate, a first ejection column, a second ejection column, a first elastic portion and a second elastic portion; the lower mold is provided with an ejection outlet, and an external driving device is inserted into the ejection outlet; the ejection plate is located in the lower mold, and is slidably connected to the lower mold and covers the ejection outlet; a plurality of first ejection columns are provided, all of which are mounted on the ejection plate, and the other ends pass through the guide port and are connected to the first molded part; the first elastic portion is wrapped around the first ejection column, and one end is connected to the positioning seat, and the other end is connected to the ejection plate; one end of the second ejection column is connected to the casting, and the other end passes through the first molding and the second molding to extend to the lower mold, and is spaced a preset distance from the ejection plate; the second elastic portion is wrapped around the second ejection column, and one end is connected to the casting, and the other end is connected to the second molding.

[0010] By adopting the above technical solution, the ejector plate is driven by the driving device to extend from the ejector outlet and push the ejector outlet toward the casting, so that the first ejector column moves the first molded part toward the casting, thereby separating the first molded part from the second molded part, and cooperating with the pneumatic structure to separate the molded waist-shaped structure from the molding cavity. Subsequently, the ejector plate moves a preset distance and pushes the second ejector column, so that the second ejector column pushes the casting open to facilitate the removal of the product, thereby achieving the effect of facilitating demoulding and material removal. The first elastic part and the second elastic part are respectively used to reset the ejector plate and the casting.

[0011] Optionally, the ejection structure further includes an ejection portion, one end of which is connected to the ejection plate, and the other end of which passes through the positioning seat and is plugged into the stabilizing seat.

[0012] By adopting the above technical solution, the ejection part can penetrate the stabilizing seat and move toward the formed waist-shaped structure when pushed by the ejection plate. After contacting the waist-shaped structure, the waist-shaped structure is pushed toward the casting, and the first ejection column is synchronously cooperated to separate the first molded part and the second molded part to separate the waist-shaped structure.

[0013] Optionally, the pneumatic structure includes a pneumatic pump, a delivery pipe and a pneumatic tube; the pneumatic tube is located in the ventilation cavity and is connected to the ventilation cavity; the delivery pipe is connected to the pneumatic tube and extends outside the upper mold; the delivery pipe is located outside the upper mold and is connected to the pneumatic pump at one end, and the pneumatic pump provides airflow delivery and air pressure regulation.

[0014] By adopting the above technical solution, the pneumatic pump provides the airflow and sufficient air pressure required for pneumatics, which are delivered to the pneumatic tube through the delivery pipe. The pneumatic tube is connected to each ventilation cavity and delivers the airflow to the connecting cavity, so that the waist-shaped structure in the connecting cavity is affected by the airflow and air pressure, and is separated from the sticky or attached parts of the connecting cavity. After separation, the airflow is blown to the S-shaped cavity along the connecting cavity, and then the sticky or attached parts in the S-shaped cavity are separated. At the same time, the airflow can also cool the product to improve the efficiency of curing and molding.

[0015] Optionally, the second molded part further includes a cooling seat, which is connected to the stabilizing seat; a plurality of cooling pipes are provided in the cooling seat, which are connected to the delivery pump.

[0016] By adopting the above technical solution, the cooling seat exchanges heat with the product formed in the connecting cavity, and cooperates with the airflow transported by the pneumatic tube, so that the product can be cooled quickly and the material picking efficiency is improved. At the same time, due to thermal expansion and contraction, the volume of the product will shrink slightly when it is gradually cooled, so that the gap between the product and the inner wall of the molding cavity will expand, allowing the airflow to flow more quickly and stably, which can not only provide a cooling effect, but also enable the airflow to more stably separate the sticking or attachment points between the product and the inner wall of the molding cavity.

[0017] Optionally, a plurality of cooling tubes are synchronously embedded in the positioning seat.

[0018] By adopting the above technical solution, the positioning seat will be simultaneously subjected to heat transfer, thereby increasing the heat dissipation area. Therefore, a plurality of cooling pipes are arranged in the positioning seat so that the positioning seat can be cooled through the cooling pipes when subjected to heat transfer, thereby quickly cooling the positioning seat and further improving the overall cooling effect.

[0019] Optionally, a pushing cavity is provided in both the cooling seat and the positioning seat, and the two pushing cavities are interconnected; a pushing structure is provided in the pushing cavity, and the pushing structure is connected to the ejection portion; a connecting sleeve is also provided in the cooling seat, and the connecting sleeve is located in the connecting cavity, and the inner cavity of the connecting sleeve is connected to the S-shaped cavity. After the injection molding material fills the S-shaped cavity, the injection molding material is replaced by the inner cavity of the connecting sleeve instead of the part of the connecting cavity on the second molded part; the pushing structure is in contact with the connecting sleeve.

[0020] By adopting the above technical solution, when the ejection part needs to eject the product, it will drive the pushing structure to move along the pushing cavity. During the movement, the pushing structure contacts and pushes the connecting sleeve, causing the connecting sleeve to rotate slightly, thereby fixing the position of the product in the connecting sleeve. The slight rotation of the connecting sleeve will loosen the connection between the connecting sleeve and the product, thereby further providing a stable demolding effect.

[0021] Optionally, the connecting cavity is connected to the pushing cavity, and the pushing structure includes a pushing frame, a rack and a positioning frame; the pushing frame is located in the pushing cavity and is connected to any of the ejection parts close to the outer wall of the lower mold, and the positioning frames are provided in a plurality of numbers and are all embedded in the pushing cavity; the rack is located in the pushing cavity and is slidably connected to the positioning frame by a penetrating manner; the rack is provided with two oppositely arranged first wedge blocks near one end of the pushing frame, and the pushing frame is provided with two second wedge blocks near one end of the rack, and the two first wedge blocks are located between the two second wedge blocks; the connecting sleeve is provided with teeth at the connecting portion between the connecting cavity and the pushing cavity, and the connecting sleeve is meshed with the rack through the teeth.

[0022] By adopting the above technical solution, the pushing structure is used in conjunction with the ejection part, so that the pushing frame drives the connecting sleeve to rotate slightly through the rack, so that the product formed in the connecting sleeve is loosened, and the airflow generated by the pneumatic structure can be stably transported, further improving the stability of separation between the product and the connecting sleeve.

[0023] Optionally, there is a preset interval between the first wedge block and the second wedge block.

[0024] By adopting the above technical solution, the ejection part needs to move a preset interval before the second wedge block can contact the first wedge block, so that the ejection part actually drives the push frame to push the rack to a smaller extent, so that the rotation amplitude of the connecting sleeve is not large. It is only necessary to rotate the connecting sleeve slightly to loosen the internal product, and to cooperate with the pneumatic structure and the ejection part for ejection, which can prevent the connecting sleeve from rotating too much and causing the product to be damaged by excessive torque.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The airflow and appropriate air pressure diffuse in the molding cavity, so that the injection molding material that is still softened at high temperature and stubbornly attached to the inner wall of the molding cavity is blown away by the airflow, so that the injection molding material is separated from the inner wall of the molding cavity under the influence of air pressure and airflow, and the ejection structure is used to achieve a stable demoulding effect; 2. The ejection structure pushes the first molded part upward along the guide port, and the injection molding material is protected by the injection molding material in the connecting cavity on the upper part of the stable seat. The start-up structure conveys the airflow to the connecting cavity at the stable seat through the vent cavity, and the injection molding material is separated from the sticky connecting cavity part by the airflow. Then, the first molded part is separated from the second molded part by the ejection structure to achieve the demoulding effect. In the demoulding process, the injection molding material is protected to ensure the integrity of the injection molding material. 3. The ejector plate is driven by the driving device to extend from the ejector outlet and push the ejector outlet toward the casting, so that the first ejector column moves the first molded part toward the casting, thereby separating the first molded part from the second molded part, and cooperating with the pneumatic structure to separate the molded waist-shaped structure from the molding cavity. Then, the ejector plate moves a preset distance and pushes the second ejector column, so that the second ejector column pushes the casting open to facilitate the removal of the product, thereby achieving the effect of convenient demoulding and material removal. The first elastic part and the second elastic part are respectively used to reset the ejector plate and the casting; 4. When the ejector plate pushes the ejector part, it can penetrate the stabilizing seat and move toward the formed waist-shaped structure. After contacting the waist-shaped structure, it pushes the waist-shaped structure toward the casting part, and synchronously cooperates with the first ejector column to separate the first molded part and the second molded part to separate the waist-shaped structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the molded product required for this application; Figure 2 is a schematic diagram of the three-dimensional structure of the mold in some embodiments of the present application; Figure 3 It is a partial three-dimensional schematic diagram of the cross-sectional state of the mold in some embodiments of the present application; Figure 4 It is a schematic diagram of the exploded structure of the mold in some embodiments of the present application; Figure 5 is a schematic diagram of the cross-sectional structure of a mold in some embodiments of the present application; Figure 6 This application Figure 5 A is a schematic diagram of the enlarged structure of the middle part; The marks in the accompanying drawings are: 1. upper mold, 11. molding cavity, 111. S-shaped cavity, 112. connecting cavity, 113. connecting sleeve, 12. casting part, 13. first molding part, 2. lower mold, 21. second molding part, 212. ventilation seat, 2121. ventilation cavity, 213. stable seat, 214. positioning seat, 2141. guide port, 215. cooling seat, 2151. push cavity, 22. top outlet, 23. push structure, 231 , pushing frame, 2311, second wedge block, 232, rack, 2321, first wedge block, 233, positioning frame, 3, ejection assembly, 31, ejection structure, 311, ejection plate, 312, first ejection column, 313, second ejection column, 314, first elastic part, 315, second elastic part, 316, ejection part, 32, pneumatic structure, 321, pneumatic pump, 322, delivery pipe, 323, pneumatic pipe, 324, cooling pipe. DETAILED DESCRIPTION

[0027] The following is an explanation of the implementation of the present application by specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the information disclosed in the present application. The present application can also be implemented or applied through other different specific implementations, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0029] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0030] In addition, the terms "first" and "second" are only used to indicate the target, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0032] The following is combined with Figure 1 -Attached Figure 6 , further details of this application are given.

[0033] The embodiment of the present application discloses a waist-shaped structure forming mold.

[0034] A waist-shaped structure forming mold, the product used for forming is a reference Figure 1 The waist-shaped structure shown, and the formed waist-shaped structure is collectively referred to as a product below.

[0035] refer to Figure 2 As shown, it includes an upper mold 1 and a lower mold 2; a molding cavity 11 is opened in the upper mold 1, and a casting piece 12 is arranged on the top. The casting piece 12 can adopt a casting cover, and a casting hopper is connected to the casting cover. The casting piece 12 extends into the molding cavity 11, so that the injection molding material enters the molding cavity 11 from the casting hopper. After the molding cavity 11 is filled with the injection molding material, the molding product is formed after cooling and solidification.

[0036] The lower mold 2 is provided with an ejector assembly 3 , which is connected to the upper mold 1 , and is used for demoulding the molded product and separating the upper mold 1 from the upper mold 1 .

[0037] In order to correspond to the style of the molded product, the molding cavity 11 is divided into an S-shaped cavity 111 and a plurality of connecting cavities 112. The connecting cavity 112 is connected to the S-shaped cavity 111, and the S-shaped cavity 111 extends in a direction away from the casting 12. When the injection molding material fills the entire S-shaped cavity 111 and the plurality of connecting cavities 112, the product can be formed after cooling and solidification.

[0038] The upper mold 1 also includes a first molding part 13, which is slidably connected to the casting part 12, that is, a plurality of through holes are opened on the first molding part 13, and the casting part 12 is provided with through columns corresponding to the through holes one by one. The through columns are inserted into the through columns and can move along the through columns, so that the first molding part 13 can slide along the casting part 12. Conversely, the first molding part 13 is provided with through columns and the casting part 12 is provided with through columns, which can also achieve this effect. No specific limitation is made here.

[0039] The S-shaped cavity 111 is opened in the first molded part 13, and a part of the connecting cavity 112 is located in the first molded part 13. The lower mold 2 also includes a second molded part 21, and the second molded part 21 is provided with another part of the connecting cavity 112. When the first molded part 13 and the second molded part 21 are connected, the connecting cavity 112 is complete. When demolding, the upper mold 1 and the lower mold 2 are separated, so that the first molded part 13 and the second molded part 21 are separated, thereby separating the molded product from part of the connecting cavity 112 of the second molded part 21, which is convenient for demolding.

[0040] The ejection assembly 3 includes an ejection structure 31 and a pneumatic structure 32. The ejection structure 31 passes through the lower mold 2 and the second molded part 21 and is connected to the first molded part 13. The driving end required by the ejection structure 31 can be an external driving part. The external driving part passes through the lower mold 2 and abuts against the ejection structure 31, and can push the ejection structure 31.

[0041] The injection molding material is poured into the molding cavity 11. After solidification and molding, the ejection end of the ejection structure 31 penetrates the lower mold 2 and the second molding part 21 to eject the first molding part 13 toward the casting part 12. The partial connecting cavity 112 on the first molding part 13 is separated from the partial connecting cavity 112 on the second molding part 21 to loosen the injection molding material so as to achieve the demolding effect. The ejection structure 31 continues to push to separate the casting part 12 from the first molding part 13, so that the S-shaped cavity 111 can be opened to take out the molded product.

[0042] The pneumatic structure 32 is connected to the second molding part 21 and provides air pressure to the connecting cavity 112. The airflow flows in the molding cavity 11, including the S-shaped cavity 111 and the connecting cavity 112. The airflow and the appropriate air pressure diffuse in the molding cavity 11, so that the injection molding material that is still softened in a high temperature state and stubbornly attached to the inner wall of the molding cavity 11 is blown and separated by the airflow. The injection molding material is separated from the inner wall of the molding cavity 11 under the influence of the air pressure and airflow, and the ejection structure 31 cooperates to achieve a stable demolding effect.

[0043] By using the ejection structure 31 and the pneumatic structure 32 of the ejection assembly 3 to cooperate, the first molded part 13 and the second molded part 21 can be stably separated after the product is formed, thereby preventing breakage or cracks and ensuring the integrity of the product.

[0044] Furthermore, the second molded part 21 includes a vent seat 212, a stabilizing seat 213 and a positioning seat 214; the positioning seat 214 is provided with a plurality of guide openings 2141, and the ejection structure 31 is slidably connected to the guide openings 2141. The guide openings 2141 can provide space for sliding and lifting when the ejection structure 31 is ejected, and provide a guiding function to avoid displacement of the ejection position.

[0045] The ventilation seat 212 is installed on the positioning seat 214, and the ventilation seat 212 is provided with a ventilation cavity 2121, and the ventilation cavity 2121 is connected to the pneumatic structure 32. The pneumatic structure 32 provides airflow and air pressure supply, which is transported from the ventilation cavity 2121 to the connecting cavity 112, so that the airflow can blow the molded product in the connecting cavity, and separate the parts of the product that are attached or stuck to the connecting cavity 112 or the S-shaped cavity 111 through the airflow.

[0046] The stabilizing seat 213 is connected to the vent seat 212, and part of the connecting cavity 112 is located on the stabilizing seat 213. The stabilizing seat 213 is used to stabilize the injection molding material in the connecting cavity 112 to prevent the injection molding material from deflecting or bending when being ejected, thereby providing protection for the injection molding material.

[0047] Specifically, the ejection structure 31 pushes the first molded part 13 upward along the guide port 2141, and the injection molding material is protected by the injection molding material in the connecting cavity 112 on the upper part of the stabilizing seat 213. The starting structure conveys the airflow to the connecting cavity 112 at the stabilizing seat 213 through the vent cavity 2121, and the injection molding material is separated from the sticky connecting cavity 112 by the airflow. Subsequently, the first molded part 13 is separated from the second molded part 21 by the action of the ejection structure 31 to achieve the demolding effect. In addition, the injection molding material is protected during the demolding process to ensure the integrity of the injection molding material.

[0048] In some embodiments, the ejection structure 31 includes an ejection plate 311, a first ejection column 312, a second ejection column 313, a first elastic portion 314 and a second elastic portion 315; the lower mold 2 is provided with an ejection outlet 22, the external driving device is inserted into the ejection outlet 22, the ejection plate 311 is located in the lower mold 2, and the lower mold 2 is provided with a space for the ejection plate 311 to move, so that the ejection plate 311 can slide along the internal space of the lower mold 2, and when sliding to the ejection outlet 22, it can cover the ejection outlet 22, and when the external driving device extends into the ejection outlet 22, it can push the ejection plate 311 to rise and fall along the lower mold 2.

[0049] The first ejector column 312 is provided with a plurality of first ejector columns 312, all of which are mounted on the ejector plate 311, and the other end passes through the guide port 2141 and is connected to the first molded part 13. The first elastic portion 314 is wrapped around the first ejector column 312, and one end is connected to the positioning seat 214, and the other end is connected to the ejector plate 311. When the ejector plate 311 rises, the first ejector column 312 is driven to rise, so that the first ejector column 312 pushes the first molded part 13 toward the casting part 12 along the guide port 2141, and the second molded part 21 does not move, so the first elastic portion 314 can be squeezed synchronously. The first elastic portion 314 can be a spring. The function of the first elastic portion 314 is to reset the ejector plate 311. When the driving device is disengaged from the ejection outlet 22, the elastic force generated by the first elastic portion 314 pushes the ejector plate 311 toward the ejection outlet 22, thereby resetting the ejector plate 311 and the first ejector column 312, and indirectly resetting the first molded part 13.

[0050] One end of the second ejector column 313 is connected to the casting part 12, and the other end passes through the first molded part 13 and the second molded part 21 to extend to the lower mold 2, and is separated from the ejector plate 311 by a preset distance. The second ejector column 313 is not connected to the ejector plate 311, and is separated by a preset distance. The specific separation distance needs to be determined according to the actual mold size and is not limited here.

[0051] When the ejector plate 311 drives the first ejector column 312 to rise, the first ejector column 312 pushes the first molded part 13, thereby loosening and demolding the molded product. When the ejector plate 311 moves to the second ejector column 313, it drives the second ejector column 313 to rise, so that the second ejector column 313 ejects the casting 12 to open one side of the S-shaped cavity 111 of the first molded part 13, so as to facilitate the removal of the molded product from the S-shaped cavity 111.

[0052] The second elastic portion 315 is wound around the second ejection column 313, with one end connected to the casting 12 and the other end connected to the first molded part 13, so that the second elastic portion 315 can apply elastic force to the casting 12. The main function of the second elastic portion 315 is to reset the casting 12. After the ejection function of the ejection plate 311 is lost, the casting 12 is reset by the elastic force of the second elastic portion 315.

[0053] Specifically, the ejector plate 311 is driven by the driving device to extend from the ejector outlet 22 and push the ejector outlet 22 toward the casting 12, so that the first ejector column 312 moves the first molded part 13 toward the casting 12, thereby separating the first molded part 13 from the second molded part 21, and cooperates with the pneumatic structure 32 to separate the molded product from the molding cavity 11. Then, the ejector plate 311 moves a preset distance and pushes the second ejector column 313, so that the second ejector column 313 pushes the casting 12 open to facilitate the removal of the product, thereby achieving the purpose of facilitating demolding and material removal.

[0054] Among them, a locking structure is provided between the upper mold 1 and the lower mold 2. When ejection is not required, the locking structure is fixed and locked to prevent the upper mold 1 and the lower mold 2 from loosening during injection molding. When ejection is required, the locking structure is opened to perform the ejection operation.

[0055] Furthermore, the ejection structure 31 also includes an ejection part 316, one end of the ejection part 316 is connected to the ejection plate 311, and the other end passes through the second molded part 21 to be plugged into the stable seat 213. The ejection part 316 includes a fixed column and an ejection tube. The fixed column is fixedly connected to the lower mold 2, and the ejection tube is socketed with the fixed column, so that the ejection tube can only move along the fixed column. At the same time, the fixed column can improve the ejection stiffness of the ejection tube to avoid bending. The ejection tube is connected to the ejection plate 311. When the ejection plate 311 rises, it can drive the ejection tube to move toward the casting 12.

[0056] Among them, when the ejection part 316 is pushed by the ejection plate 311, it can penetrate the stabilizing seat 213 and move toward the molded product. After contacting the product, it pushes the product toward the casting 12, and synchronously cooperates with the first ejection column 312 to separate the first molded part 13 and the second molded part 21 to separate the products.

[0057] Among them, the ejection part 316 is longer than the first ejection column 312, so that the ejection part 316 will contact the product first, thereby loosening the product first, and simultaneously cooperate with the pneumatic structure 32 to provide airflow to blow away the sticky parts. The first ejection column 312 then separates the first molded part 13 from the second molded part 21, thereby further ensuring that the molded product can be stably demolded.

[0058] In some embodiments, the pneumatic assembly includes a pneumatic pump 321, a delivery pipe 322 and a pneumatic tube 323; the pneumatic structure 32 is mainly installed on the second molded part 21, so the second molded part 21 remains stationary and the pneumatic structure 32 is not affected. The pneumatic tube 323 is located in the ventilation cavity 2121 and is connected to the ventilation cavity 2121. The delivery pipe 322 is connected to the pneumatic tube 323 and extends outside the upper mold 1. The delivery pipe 322 is located outside the upper mold 1 and is connected to the pneumatic pump 321 at one end. The pneumatic pump 321 provides airflow delivery and air pressure regulation.

[0059] Specifically, the pneumatic pump 321 provides the airflow and sufficient air pressure required for pneumatics, which are delivered to the pneumatic tube 323 through the delivery tube 322. The pneumatic tube 323 is connected to each ventilation cavity 2121 and delivers the airflow to the connecting cavity 112, so that the product in the connecting cavity 112 is affected by the airflow and air pressure, and is separated from the sticky or attached parts of the connecting cavity 112. After separation, the airflow is blown to the S-shaped cavity 111 along the connecting cavity 112, and then the sticky or attached parts in the S-shaped cavity 111 are separated. At the same time, the airflow can also cool the product to improve the efficiency of curing and molding.

[0060] In some embodiments, the second molding part 21 also includes a cooling seat 215, and the cooling seat 215 is connected to the stabilizing seat 213; a plurality of cooling tubes 324 are arranged in the cooling seat 215, and the cooling tubes 324 are connected to the conveying tubes 322 or the pneumatic tubes 323, and the pneumatic tubes 323 convey the products to the cooling tubes 324 through the conveying tubes 322 and 323, and the cooling seat 215 exchanges heat with the products formed in the connecting cavity 112, and cooperates with the airflow conveyed by the pneumatic tubes 323, so that the products can be cooled quickly and the material taking efficiency can be improved. At the same time, due to thermal expansion and contraction, the volume of the products will shrink slightly when they are gradually cooled, so that the gap between the products and the inner wall of the molding cavity 11 will be expanded, so that the airflow can circulate more quickly and stably, which can not only provide a cooling effect, but also enable the airflow to more stably separate the adhesion or attachment points between the products and the inner wall of the molding cavity 11.

[0061] Among them, no cooling pipe 324 is set in the first molded part 13, but the first molded part 13 and the second molded part 21 are in close contact with each other, which will conduct heat to the second molded part 21. Therefore, the cooling seat 215 of the second molded part 21 can simultaneously provide cooling for the first molded part 13.

[0062] Furthermore, a plurality of cooling tubes 324 are synchronously embedded in the positioning seat 214, and the positioning seat 214 is simultaneously subjected to heat transfer, thereby increasing the heat dissipation area. Therefore, a plurality of cooling tubes 324 are arranged in the positioning seat 214 so that the positioning seat 214 can be cooled by the cooling tubes 324 when subjected to heat transfer, thereby quickly cooling the positioning seat 214 and further improving the overall cooling effect.

[0063] In some embodiments, a pushing cavity 2151 is provided in both the cooling seat 215 and the positioning seat 214, and the two pushing cavities 2151 are interconnected; a pushing structure 23 is provided in the pushing cavity 2151, and the pushing structure 23 is connected to the ejection portion 316; a connecting sleeve 113 is also provided in the cooling seat 215, and the connecting sleeve 113 is located in the connecting cavity 112, and the inner cavity of the connecting sleeve 113 is connected to the S-shaped cavity 111. After the injection molding material fills the S-shaped cavity 111, the inner cavity of the connecting sleeve 113 replaces part of the connecting cavity 112 on the second molded part 21 to fill the injection molding material; the pushing structure 23 is in contact with the connecting sleeve 113.

[0064] When the ejection part 316 needs to eject the product, it will drive the pushing structure 23 to move along the pushing cavity 2151. During the movement, the pushing structure 23 contacts and pushes the connecting sleeve 113, causing the connecting sleeve 113 to rotate slightly, thereby fixing the position of the product in the connecting sleeve 113. The slight rotation of the connecting sleeve 113 will loosen the connection between the connecting sleeve 113 and the product, thereby further providing a stable demolding effect.

[0065] Furthermore, the connecting cavity 112 is connected to the pushing cavity 2151, and the pushing structure 23 includes a pushing frame 231, a rack 232, and a positioning frame 233; the pushing frame 231 is located in the pushing cavity 2151, and is connected to any ejection portion 316 close to the outer wall of the lower mold 2, and a number of positioning frames 233 are provided, and all are embedded in the pushing cavity 2151, and the rack 232 is located in the pushing cavity 2151, and is slidably connected to the positioning frame 233 by a penetrating manner.

[0066] The rack 232 is provided with two oppositely arranged first wedge blocks 2321 at one end close to the pushing frame 231, and the pushing frame 231 is provided with two second wedge blocks 2311 at one end close to the rack 232, and the two first wedge blocks 2321 are located between the two second wedge blocks 2311; the connecting sleeve 113 is provided with teeth at the position where the connecting cavity 112 is connected to the pushing cavity 2151, and the connecting sleeve 113 is meshed with the rack 232 through the teeth, wherein the teeth are not shown because the figure is a cross-sectional view.

[0067] When the ejection part 316 moves with the ejection plate 311, it synchronously drives the pushing frame to move, and the pushing frame moves along the pushing cavity 2151. During the movement, the two second wedge blocks 2311 are driven to move, and the second wedge block 2311 close to the lower mold 2 moves to the first wedge block 2321 close to the lower mold 2. The rack 232 is pushed by the first wedge block 2321 and moves away from the pushing frame 231. During the movement, the rack 232 engages with the teeth of the connecting sleeve 113, so that the connecting sleeve 113 rotates along the connecting cavity 112, thereby separating the product in the connecting sleeve 113 from the sticking part of the connecting sleeve 113.

[0068] When the ejection portion 316 moves toward the ejection outlet 22 along with the ejection plate 311, the second wedge block 2311 close to the casting 12 moves to the first wedge block 2321 close to the casting 12, and the rack 232 is pushed by the first wedge block 2321 and moves toward the push frame 231. The connecting sleeve 113 rotates along the connecting cavity 112, and the push frame 231 is reset synchronously.

[0069] Among them, there will be a gap between the first wedge block 2321 and the second wedge block 2311, so the ejection part 316 needs to move a preset gap before the second wedge block 2311 can contact the first wedge block 2321, so that the ejection part 316 actually drives the push frame 231 to push the rack 232 to a smaller extent, so that the rotation amplitude of the connecting sleeve 113 is not large, and the connecting sleeve 113 only needs to be slightly rotated to loosen the internal product, and can cooperate with the pneumatic structure 32 and the ejection part 316 for ejection, which can prevent the connecting sleeve 113 from rotating too much and causing the product to be damaged by excessive torque.

[0070] Specifically, the pushing structure 23 cooperates with the ejection portion 316, so that the pushing frame 231 drives the connecting sleeve 113 to rotate slightly through the rack 232, so that the product formed in the connecting sleeve 113 is loosened, and the airflow generated by the pneumatic structure 32 can be stably transported, further improving the stability of separation of the product and the connecting sleeve 113.

[0071] According to the above embodiment, the demolding sequence of the mold of the present application is as follows: the locking structure of the upper mold 1 and the lower mold 2 is opened, the pneumatic structure 32 synchronously starts the conveying airflow, and the airflow enters the cooling tube 324 for heat exchange to cool the molded product, the driving end of the external driving device is extended into the ejection outlet 22, and the ejection plate 311 is pushed toward the casting 12, the ejection part 316 contacts the molded product along the ventilation cavity 2121 and pushes the push frame 231 at the same time, the airflow enters the connecting sleeve 113, the connecting sleeve 113, the push frame 231 drives the rack 232 to move through the second wedge block 2311 and the first wedge block 2321, and synchronously drives the connecting sleeve 113 to rotate slightly, so that the connection point between the connecting sleeve 113 and the product is loosened, and the connecting sleeve 113 and the S-shaped cavity 111 are ejected by the airflow and the ejection part 316, and then the second ejection column 313 pushes the casting 12 away again to open the first molded part 13, so as to facilitate the collection of the product.

[0072] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waist-shaped structure forming mold, comprising an upper mold (1) and a lower mold (2); a forming cavity (11) is formed in the upper mold (1), a casting piece (12) is provided on the top, and the casting piece (12) extends into the forming cavity (11); the lower mold (2) is provided with an ejector assembly (3), and the ejector assembly (3) is connected to the upper mold (1); the forming cavity (11) is divided into an S-shaped cavity (111) and a plurality of connecting cavities (112), the connecting cavities (112) are connected to the S-shaped cavity (111), and the S-shaped cavity (111) extends in a direction away from the casting piece (12), characterized in that: The upper mold (1) further comprises a first molded part (13), the first molded part (13) being slidably connected to the casting part (12); the S-shaped cavity (111) is opened in the first molded part (13), and a part of the connecting cavity (112) is located in the first molded part (13); the lower mold (2) further comprises a second molded part (21); the second molded part (21) is opened with another part of the connecting cavity (112), and when the first molded part (13) and the second molded part (21) are connected, the connecting cavity (112) is complete; the ejection assembly (3) comprises an ejection structure (31) and a pneumatic structure (32); the ejection structure (31) penetrates the lower mold (2) and the second molded part (21), and is connected to the first molded part (13), and the injection molding material is poured into the molding cavity (11). After solidification and molding, the ejection structure (31) ejects the first molding part (13) toward the pouring part (12), so that the injection molding material is loosened and demoulded; the pneumatic structure (32) is connected to the second molding part (21) and provides an airflow to the connecting cavity (112). The airflow diffuses in the molding cavity (11), so that the injection molding material is separated from the inner wall of the molding cavity (11) under the influence of the airflow and air pressure, and the ejection structure (31) cooperates to complete the demoulding.

2. A waist-shaped structure forming mold according to claim 1, characterized in that: The second molded part (21) comprises a vent seat (212), a stabilizing seat (213) and a positioning seat (214); the positioning seat (214) is provided with a plurality of guide openings (2141), and the ejection structure (31) is slidably connected to the guide openings (2141); the vent seat (212) is mounted on the positioning seat (214), and the vent seat (212) is provided with a vent cavity (2121), and the vent cavity (2121) is connected to the pneumatic structure (32); the stabilizing seat (213) is connected to the vent seat (212), and part of the communicating cavity (112) is located on the stabilizing seat (213).

3. A waist-shaped structure forming mold according to claim 2, characterized in that: The ejection structure (31) comprises an ejection plate (311), a first ejection column (312), a second ejection column (313), a first elastic portion (314) and a second elastic portion (315); the lower mold (2) is provided with an ejection outlet (22), and an external driving device is inserted into the ejection outlet (22); the ejection plate (311) is located in the lower mold (2), is slidably connected to the lower mold (2), and covers the ejection outlet (22); a plurality of first ejection columns (312) are provided, all of which are mounted on the ejection plate (311), and the other end of the first ejection column (312) passes through the guide port (2141) and is connected to the first molded part (13); The first elastic portion (314) is wound around the first ejector column (312), and one end of the first elastic portion (314) is connected to the positioning seat (214), and the other end of the first elastic portion (314) is connected to the ejector plate (311); the second ejector column (313) is connected to the casting (12) at one end, and the other end of the second ejector column (313) passes through the first molding (13) and the second molding (21) to extend toward the lower mold (2), and is spaced from the ejector plate (311) by a preset distance; the second elastic portion (315) is wound around the second ejector column (313), and one end of the second elastic portion (315) is connected to the casting (12), and the other end of the second molding (21) is connected to the second molding (21).

4. A waist-shaped structure forming mold according to claim 3, characterized in that: The ejection structure (31) further comprises an ejection portion (316), one end of the ejection portion (316) being connected to the ejection plate (311), and the other end of the ejection portion (316) passing through the positioning seat (214) and plugged into the stabilizing seat (213).

5. A waist-shaped structure forming mold according to claim 4, characterized in that: The pneumatic structure (32) comprises a pneumatic pump (321), a delivery pipe (322) and a pneumatic tube (323); the pneumatic tube (323) is located in the ventilation cavity (2121) and is in communication with the ventilation cavity (2121); the delivery pipe (322) is connected to the pneumatic tube (323) and extends outside the upper mold (1); one end of the delivery pipe (322) located outside the upper mold (1) is connected to the pneumatic pump (321), and the pneumatic pump (321) provides air flow delivery and air pressure regulation.

6. A waist-shaped structure forming mold according to claim 5, characterized in that: The second molded part (21) further comprises a cooling seat (215), wherein the cooling seat (215) is connected to the stabilizing seat (213); a plurality of cooling pipes (324) are arranged in the cooling seat (215), and the cooling pipes (324) are connected to the delivery pump.

7. A waist-shaped structure forming mold according to claim 6, characterized in that: A plurality of cooling pipes (324) are synchronously embedded in the positioning seat (214).

8. The waist-shaped structure forming mold according to claim 6, characterized in that: The cooling seat (215) and the positioning seat (214) are both provided with a push cavity (2151), and the two push cavities (2151) are interconnected; a push structure (23) is provided in the push cavity (2151), and the push structure (23) is connected to the ejection portion (316); a connecting sleeve (113) is also provided in the cooling seat (215), and the connecting sleeve (113) is located in the connecting cavity (112), and the inner cavity of the connecting sleeve (113) is connected to the S-shaped cavity (111); after the S-shaped cavity (111) is filled with injection molding material, the inner cavity of the connecting sleeve (113) replaces the part of the connecting cavity (112) on the second molded part (21) to fill the injection molding material; the push structure (23) is in contact with the connecting sleeve (113).

9. A waist-shaped structure forming mold according to claim 8, characterized in that: The connecting cavity (112) is connected to the pushing cavity (2151); the pushing structure (23) comprises a pushing frame (231), a rack (232) and a positioning frame (233); the pushing frame (231) is located in the pushing cavity (2151) and is connected to any of the ejection portions (316) close to the outer wall of the lower mold (2); a plurality of positioning frames (233) are provided and are all embedded in the pushing cavity (2151); the rack (232) is located in the pushing cavity (2151) and is slidably connected to the positioning frame (233) by penetrating therethrough. The rack (232) is provided with two first wedge blocks (2321) arranged opposite to each other at one end close to the push frame (231), and the push frame (231) is provided with two second wedge blocks (2311) at one end close to the rack (232), and the two first wedge blocks (2321) are located between the two second wedge blocks (2311); the connecting sleeve (113) is provided with teeth at the connection between the connecting cavity (112) and the push cavity (2151), and the connecting sleeve (113) is meshed with the rack (232) through the teeth.

10. A waist-shaped structure forming mold according to claim 9, characterized in that: There is a preset interval between the first wedge block (2321) and the second wedge block (2311).

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