Multi-component multi-die-cavity in-die welding forming die and method

Abstract

The invention discloses a multi-assembly multi-mold-cavity in-mold welding forming mold and method, and relates to the technical field of forming molds, the multi-assembly multi-mold-cavity in-mold welding forming mold comprises a forming mold component, and a welding assembly is arranged in the forming mold component; the forming die component comprises an assembly bottom plate, an equal-height supporting table is fixedly connected to the upper surface of the assembly bottom plate, and a lower die body is fixedly connected to the upper surface of the equal-height supporting table. Firstly, a first transposition air cylinder is controlled to be started to drive a first perforated baffle to move rightwards, when hole sites in the first perforated baffle correspond to three forming cavities in a one-to-one mode, demolding is completed in one step, then a demolding air cylinder is controlled to be started to drive a main driving plate to move downwards, and demolding is completed. The main driving plate moves downwards to drive the driven supporting rod and the demolding ring to move downwards at the same time, the demolding ring moves downwards to drive the formed pipelines of three types to move downwards at the same time, then the demolding work of a plurality of formed parts is rapidly completed, and the labor intensity of workers is greatly reduced.

Description

Technical Field

[0001] This invention relates to the technical field of molding dies, specifically to a multi-component, multi-cavity in-mold welding molding die and method. Background Technology

[0002] With the advancement of technology and the progress of industrialization, plastic components that make up products have become indispensable parts in modern mass production, holding an irreplaceable position. Due to the limitations of existing mold technology, a complete plastic pipe fitting is usually divided into several parts that are injection molded and then connected together. The connection methods are generally adhesive bonding, ultrasonic welding, and screw fixing. The assembly process is complicated, which increases costs in today's high labor costs. Moreover, the product defect rate is also high. In addition, most existing molds can only be injection molded for the same type of part. When different types of parts need to be processed, new molds need to be changed, which increases the processing steps and greatly reduces the practicality of the molding mold. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a multi-component, multi-cavity in-mold welding forming mold and method.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a multi-component, multi-cavity in-mold welding forming mold, comprising: A molding die component, wherein a welding assembly is provided inside the molding die component; The forming mold component includes an assembly base plate, an equal-height support platform fixedly connected to the upper surface of the assembly base plate, a lower mold body fixedly connected to the upper surface of the equal-height support platform, a pipe forming cavity 1 opened on the upper surface of the left end of the lower mold body, a pipe forming cavity 2 opened in the middle of the upper surface of the lower mold body, and a pipe forming cavity 3 opened on the upper surface of the right end of the lower mold body. A positioning post is fixedly connected to each of the four corners of the upper end face of the lower mold body. The lower end surface of each positioning post is snapped with an upper mold body. Three forming posts with different diameters are provided on the lower surface of the upper mold body, and the diameter of the forming posts decreases from left to right. The upper mold body and the lower mold body are fixed at the four corners near one end by bolts and nuts. A demolding cylinder is fixedly installed on each of the two sides of the upper mold body. A main drive plate is fixedly connected to the upper end of each demolding cylinder. Three demolding rings are movably embedded above the forming column and on the lower surface of the upper mold body. Three sets of driven support rods are fixedly connected to the lower surface of the main drive plate. The lower end of each set of driven support rods penetrates the top surface of the upper mold body and is fixedly connected to the upper end face of each demolding ring.

[0005] As a preferred embodiment of the present invention, upper main holes are provided on both sides of the upper end of the lower mold body, and a perforated baffle is inserted into the inner cavity of the upper main hole. A shifting cylinder is fixedly installed on the right side of the upper end of the lower mold body, and the right end of the shifting cylinder is fixedly connected to the side of the right end of the perforated baffle.

[0006] As a preferred embodiment of the present invention, the lower mold body and the equal-height support platform are each provided with three discharge ports on their lower surfaces, and the three discharge ports are respectively larger than the diameters of the inner cavities of the first forming cavity of the pipe, the second forming cavity of the pipe, and the third forming cavity of the pipe from left to right.

[0007] As a preferred embodiment of the present invention, the upper end of the lower mold body is provided with an external cooling groove that surrounds the outer sides of the pipe forming cavity one, the pipe forming cavity two, and the pipe forming cavity three, respectively. The left side of the upper end of the lower mold body is provided with a cold water pipe that communicates with the left side chamber of the external cooling groove, and the right side of the upper end of the lower mold body is provided with a return pipe that communicates with the right side chamber of the external cooling groove.

[0008] As a preferred embodiment of the present invention, the upper mold body has interconnected internal cooling grooves inside, and a second cold water pipe connected to the left end chamber of the internal cooling groove is provided on the front of the left end of the upper mold body, and a second return pipe connected to the right end chamber of the internal cooling groove is provided on the front of the right end of the upper mold body.

[0009] As a preferred embodiment of the present invention, the upper end of the lower mold body is provided with three injection nozzles that are respectively connected to the first molding cavity of the pipe, the second molding cavity of the pipe, and the third molding cavity of the pipe.

[0010] As a preferred embodiment of the present invention, the welding assembly includes a central movable hole, which is located at the center of both sides of the lower mold body. Multiple positioning springs are fixedly connected to the lower surfaces of the inner cavities at both ends of the central movable hole. A perforated heating plate is inserted into the upper cavity of the central movable hole, and the lower surface of the perforated heating plate overlaps with the upper end of the positioning spring. A limiting insertion hole is formed on the upper surface of the left end of the perforated heating plate, and an adjusting plate is inserted into the inner cavity of the limiting insertion hole. A second shifting cylinder is fixedly installed at the center of the left side of the lower mold body, and the left end of the second shifting cylinder is fixedly connected to the right side of the adjusting plate.

[0011] As a preferred embodiment of the present invention, a lower auxiliary hole is provided on the left side of the lower end of the lower mold body, and a perforated baffle is inserted into the inner cavity of the lower auxiliary hole. A shift cylinder is fixedly installed on the right side of the lower end of the lower mold body, and the right end of the shift cylinder is fixedly connected to the side of the right end of the perforated baffle.

[0012] As a preferred embodiment of the present invention, multiple positioning adhesive strips are adhered to the inner walls of the lower ends of the first forming cavity, the second forming cavity, and the third forming cavity of the pipe.

[0013] A molding method includes the following steps: S1. The injection plastic is transferred through three injection nozzles to the interior of the first molding chamber, the second molding chamber, and the third molding chamber of the pipe, and different amounts of injection plastic are injected into different chambers. S2. After injection molding is completed, cold water is delivered to the interior of cold water pipe one and cold water pipe two respectively. Cold water pipe one injects cold water into the interior of the external cooling tank, and cold water pipe two injects cold water into the interior of the internal cooling tank. By using the external cooling tank and the internal cooling tank together, the injection molded part can be cooled inside and outside at the same time, which speeds up the molding process of the injection molded part. Then, return pipe one and return pipe two can discharge the water in the cooling tank that has been neutralized by heat, so as to facilitate the cold circulation of water in the cooling tank. S3. After molding, first control the shifting cylinder to start and drive the perforated baffle to move to the right. When the holes on the perforated baffle correspond to the three molding cavities, the channels of the three molding cavities are opened. Then control the demolding cylinder to start and drive the main drive plate to move downward. The downward movement of the main drive plate will drive the driven support rod and the demolding ring to move downward at the same time. The downward movement of the demolding ring will drive the three types of pipes after molding to move downward at the same time. When the three types of pipes contact the upper surface of the perforated baffle, the adjustment of the welding position of the connecting pipe is completed. S4. Repeat steps S1-S2 above to complete the injection molding of the second connecting pipe; S5. During welding, first, start the second shift cylinder to move the perforated heating plate to the right. When the holes on the perforated heating plate are far from the forming cavity, the forming cavity will automatically close. Then, start the demolding cylinder to move the formed docking pipe two downwards. The downward movement of docking pipe two will push the perforated heating plate downwards. When the perforated heating plate is in full contact with docking pipe one, start the perforated heating plate to quickly heat the docking surfaces of docking pipe one and docking pipe two. When the docking surfaces are heated to a certain temperature, start the second shift cylinder again to move the perforated heating plate to the left. When the holes on the perforated heating plate correspond to the forming cavity again, start the demolding cylinder to move the three heated docking pipes two downwards to fully contact the heated surfaces of the three docking pipes one. This quickly completes the in-mold welding of multiple sets of pipes. S6. When welding is finished, first control the start of the shift cylinder three to drive the perforated baffle two to move to the right. When the hole on the perforated baffle two corresponds one-to-one with the position of each forming cavity, the channel of the forming cavity is opened. At this time, the multiple pipes after welding will be automatically discharged from the discharge port, thus quickly completing the discharge of the welded pipes. S7. Repeat the above steps to continuously perform pipe forming and welding work.

[0014] The beneficial effects of this invention are: 1. This multi-component, multi-cavity in-mold welding molding die, through the setting of pipe forming cavity one, pipe forming cavity two, and pipe forming cavity three, can respectively form three types of pipe injection molded parts, reducing the number of working steps and thus greatly improving the production efficiency of the molding die.

[0015] 2. This multi-component, multi-cavity in-mold welding molding die, through the setting of a shifting cylinder and a demolding cylinder, firstly controls the shifting cylinder to move the perforated baffle to the right. When the holes on the perforated baffle correspond one-to-one with the three molding cavities, demolding is completed in one step. Then, controlling the demolding cylinder to move the main drive plate downward. The downward movement of the main drive plate can drive the driven support rod and the demolding ring to move downward simultaneously. The downward movement of the demolding ring can drive the three types of pipes after molding to move downward simultaneously. At this time, the demolding of multiple molded parts is completed quickly, which greatly reduces the labor intensity of the workers.

[0016] 3. This multi-component, multi-cavity in-mold welding molding die, through the setting of an external cooling tank, a cold water pipe, and a return pipe, firstly, the cold water pipe can transmit external cold water to the interior of the external cooling tank, so that the external cooling tank can simultaneously and rapidly cool the injection molded parts inside the three molding cavities, thereby greatly improving the molding efficiency of the injection molded parts. Then, the return pipe can drain the neutralized water in the external cooling tank, thereby promoting the cold circulation of the water source in the external cooling tank, thus improving the working efficiency of the molding die.

[0017] 4. This multi-component, multi-cavity in-mold welding molding die, through the setting of an internal cooling tank, a second cold water pipe, and a second return pipe, firstly, the second cold water pipe can transfer external cold water to the inside of the internal cooling tank, so that the internal cooling tank can simultaneously cool the inner wall of the injection molded part. In this way, together with the external cooling tank, the inner and outer walls of the injection pipe can be cooled at the same time, thus greatly improving the molding efficiency of the injection pipe. Then, the second return pipe can drain the neutralized water in the internal cooling tank, thereby promoting the cold circulation of the water source in the internal cooling tank, thus enabling the cooling components to be used continuously.

[0018] 5. This multi-component, multi-cavity in-mold welding molding die, through the set welding components, firstly controls the start of the demolding cylinder to transport the formed connecting pipe one to the bottom of the molding cavity. Then, controls the start of the shifting cylinder two to drive the perforated heating plate to move to the right. When the holes on the perforated heating plate are far away from the molding cavity, the molding cavity will automatically close. Controlling the demolding cylinder again will drive the formed connecting pipe two downwards. The downward movement of the connecting pipe two will push the perforated heating plate downwards. When the perforated heating plate is in full contact with the connecting pipe one, the perforated heating plate will then close. Once the hot plate is activated, it can quickly heat the mating surfaces of pipe one and pipe two. When the mating surfaces are heated to a certain temperature, the shift cylinder two is activated again to move the perforated heating plate to the left. When the holes on the perforated heating plate align with the molding cavity again, the demolding cylinder is activated to move the three heated pipe twos downwards to fully contact the heated surfaces of the three pipe ones. This quickly completes the synchronous welding of multiple sets of pipes. Automatic welding within the mold saves labor costs and provides a safer welding environment, greatly improving the practicality of the molding die.

[0019] 6. This multi-component, multi-cavity in-mold welding molding die, through the setting of positioning rubber strips, can squeeze the molded parts conveyed downwards, thereby facilitating the separation of the molded parts from the demolding ring, thus improving the demolding quality of the molded parts, and at the same time providing convenience for the demolding work.

[0020] 7. This multi-component, multi-cavity, in-mold welding forming mold, through its designed forming mold components, ensures stable quality, fast assembly, high degree of automation, short construction period, high efficiency, saves labor costs, and avoids personal injury hazards to workers. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view of the present invention; Figure 3 This is a structural schematic diagram of the invention from the right-side view. Figure 4 This is a structural schematic diagram of the invention from a lower perspective; Figure 5 This is a front sectional view of the present invention; Figure 6 This is the invention Figure 5 A three-dimensional image; Figure 7 This is the invention Figure 6 A structural diagram from below; Figure 8 This is a cross-sectional view of the external cooling groove of the present invention; Figure 9 This is a cross-sectional view of the internal cooling groove of the present invention; Figure 10 This is the invention Figure 6 Enlarged view of point A in the middle; Figure 11 This is the invention Figure 6 Enlarged view of point B in the middle; Figure 12 This is the invention Figure 7 Enlarged view of point C in the middle.

[0022] In the diagram: 1. Molding mold components; 101. Assembly base plate; 102. Equal height support platform; 103. Lower mold body; 104. Pipe forming cavity 1; 105. Pipe forming cavity 2; 106. Pipe forming cavity 3; 107. Positioning column; 108. Upper mold body; 109. Demolding cylinder; 110. Main drive plate; 111. Demolding ring; 112. Driven support rod; 113. Upper main hole; 114. Perforated baffle 1; 115. Shifting cylinder 1; 116. Discharge port; 11 7. External cooling tank; 118. Cold water pipe one; 119. Return pipe one; 120. Internal cooling tank; 121. Cold water pipe two; 122. Return pipe two; 123. Injection nozzle; 2. Welding assembly; 201. Center position movable hole; 202. Positioning spring; 203. Heating plate with holes; 204. Limiting insertion hole; 205. Adjusting plate; 206. Positioning cylinder two; 207. Lower auxiliary hole; 208. Baffle plate with holes two; 209. Positioning cylinder three; 210. Positioning rubber strip. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] Example: Figures 1-12As shown, the present invention discloses a multi-component, multi-cavity in-mold welding forming mold, comprising: a forming mold component 1, wherein a welding component 2 is disposed inside the forming mold component 1; the forming mold component 1 includes an assembly base plate 101, an equal-height support platform 102 is fixedly connected to the upper surface of the assembly base plate 101, a lower mold body 103 is fixedly connected to the upper surface of the equal-height support platform 102, a pipe first forming cavity 104 is formed on the upper surface of the left end of the lower mold body 103, a pipe second forming cavity 105 is formed in the middle of the upper surface of the lower mold body 103, and a pipe third forming cavity 106 is formed on the upper surface of the right end of the lower mold body 103; a positioning post 107 is fixedly connected to each of the four corners of the upper surface of the lower mold body 103, and the lower surface of the positioning post 107 is uniformly... The upper mold body 108 is snapped in place. Three forming pillars of different diameters are provided on the lower surface of the upper mold body 108, with the diameter of the forming pillars decreasing from left to right. The upper mold body 108 and the lower mold body 103 are fixed at their four corners near one end by bolts and nuts. A demolding cylinder 109 is fixedly installed on each of the two sides of the upper mold body 108. A main drive plate 110 is fixedly connected to the upper end of each demolding cylinder 109. Three demolding rings 111 are movably embedded above the forming pillars and on the lower surface of the upper mold body 108. Three sets of driven support rods 112 are fixedly connected to the lower surface of the main drive plate 110, and the lower end of each set of driven support rods 112 penetrates the top surface of the upper mold body 108 and is fixedly connected to the upper end face of each demolding ring 111.

[0025] The upper part of the lower mold body 103 has upper main holes 113 on both sides. A perforated baffle 114 is inserted into the inner cavity of the upper main hole 113. A shifting cylinder 115 is fixedly installed on the right side of the upper part of the lower mold body 103, and the right end of the shifting cylinder 115 is fixedly connected to the side of the right end of the perforated baffle 114. The lower surfaces of the lower mold body 103 and the equal-height support 102 are each provided with three discharge ports 116, and the three discharge ports 116 are respectively larger than the inner diameters of the pipe forming cavity 104, pipe forming cavity 105 and pipe forming cavity 106 from left to right. The upper part of the lower mold body 103 has external cooling grooves 1 that surround the outer sides of the pipe forming cavity 104, pipe forming cavity 105 and pipe forming cavity 106. 17. A cold water pipe 118 connected to the left chamber of the external cooling tank 117 is provided on the left side of the upper end of the lower mold body 103. A return pipe 119 connected to the right chamber of the external cooling tank 117 is provided on the right side of the upper end of the lower mold body 103. An internal cooling tank 120 connected to each other is provided inside the upper mold body 108. A cold water pipe 121 connected to the left chamber of the internal cooling tank 120 is provided on the front of the left end of the upper mold body 108. A return pipe 122 connected to the right chamber of the internal cooling tank 120 is provided on the front of the right end of the upper mold body 108. Three injection nozzles 123 connected to the first molding chamber 104, the second molding chamber 105, and the third molding chamber 106 are provided on the front of the upper end of the lower mold body 103.

[0026] The system includes an external cooling tank 117, a cold water pipe 118, and a return pipe 119. First, the cold water pipe 118 can transfer external cold water to the interior of the external cooling tank 117, allowing the external cooling tank 117 to simultaneously and rapidly cool the injection molded parts inside the three molding cavities, thus greatly improving the molding efficiency of the injection molded parts. Then, the return pipe 119 can drain the neutralized water in the external cooling tank 117, thereby promoting the cold circulation of the water source in the external cooling tank 117 and improving the working efficiency of the molding mold.

[0027] The internal cooling tank 120, cold water pipe 121, and return pipe 122 are configured to allow external cold water to be transferred to the internal cooling tank 120, which in turn rapidly cools the inner wall of the injection molded part. This, combined with the external cooling tank 117, enables simultaneous cooling of the inner and outer walls of the injection molding pipe, thereby significantly improving the molding efficiency of the injection molding pipe. Then, the return pipe 122 discharges the neutralized water from the internal cooling tank 120, allowing the water in the internal cooling tank 120 to circulate coldly, thus enabling the cooling components to be used continuously.

[0028] Welding assembly 2 includes a center movable hole 201, which is located in the middle of both sides of the lower mold body 103. Multiple positioning springs 202 are fixedly connected to the lower surfaces of the inner cavities at both ends of the center movable hole 201. A perforated heating plate 203 is inserted into the upper cavity of the center movable hole 201, with the lower surface of the perforated heating plate 203 overlapping the upper ends of the positioning springs 202. A limiting insertion hole 204 is provided on the upper surface of the left end of the perforated heating plate 203, and an adjusting plate 205 is inserted into the inner cavity of the limiting insertion hole 204. The middle position of the left side of the lower mold body 103 is fixed. A second shift cylinder 206 is installed, and the left end of the second shift cylinder 206 is fixedly connected to the right side of the adjustment plate 205; a lower auxiliary hole 207 is opened on the left side of the lower end of the lower mold body 103, and a perforated baffle 208 is inserted into the inner cavity of the lower auxiliary hole 207; a third shift cylinder 209 is fixedly installed on the right side of the lower end of the lower mold body 103, and the right end of the third shift cylinder 209 is fixedly connected to the side of the right end of the perforated baffle 208; multiple positioning strips 210 are adhered to the inner walls of the lower ends of the pipe forming cavity 104, the pipe forming cavity 105, and the pipe forming cavity 106.

[0029] In this process, the welding assembly 2 is activated by first controlling the shifting cylinder 206 to move the perforated heating plate 203 to the right. When the holes on the perforated heating plate 203 move away from the forming cavity, the forming cavity will automatically close. Then, the demolding cylinder 109 is activated to move the formed docking pipe 2 downward. The downward movement of the docking pipe 2 pushes the perforated heating plate 203 downward. When the perforated heating plate 203 is in full contact with the docking pipe 1, the perforated heating plate 203 is activated to quickly heat the docking surfaces of the docking pipe 1 and docking pipe 2. When the docking surfaces are heated to a certain temperature, the shifting cylinder 206 is activated again to move the perforated heating plate 203 to the left. When the holes on the perforated heating plate 203 correspond to the forming cavity again, the demolding cylinder 109 is activated to move the three heated docking pipes 2 downward to fully contact the heated surfaces of the three docking pipes 1. This quickly completes the in-mold welding of multiple sets of pipes.

[0030] The positioning strip 210 can squeeze the molded part being conveyed downwards, thereby facilitating the separation of the molded part from the demolding ring 111, thus improving the demolding quality of the molded part and providing convenience for the demolding process.

[0031] During operation, the injection molding material is first transferred through three injection nozzles 123 to the molding chambers 104, 105, and 106 respectively. Different amounts of injection molding material are injected into each chamber. Then, cold water is supplied to cold water pipes 118 and 121. Cold water pipe 118 injects cold water into the external cooling tank 117, and cold water pipe 121 injects cold water into the internal cooling tank 120. The combined use of the external cooling tank 117 and the internal cooling tank 120 allows for simultaneous internal and external cooling of the injection molded part, accelerating the molding process. Finally, the shift cylinder 115 is controlled to start the conveyor belt. The perforated baffle 114 moves to the right. When the holes on the perforated baffle 114 correspond one-to-one with the three forming cavities, the channels of the three forming cavities are opened. Then, the demolding cylinder 109 is started, which drives the main drive plate 110 to move downward. The downward movement of the main drive plate 110 drives the driven support rod 112 and the demolding ring 111 to move downward at the same time. The downward movement of the demolding ring 111 drives the three types of pipes after forming to move downward at the same time. When the three types of pipes contact the upper surface of the perforated baffle 208, the adjustment of the welding position of the first connecting pipe is completed. Finally, the rapid forming of the second connecting pipe can also be completed through the above steps.

[0032] In-mold welding of pipe one and pipe two: First, starting the shifting cylinder 206 will move the perforated heating plate 203 to the right. When the holes on the perforated heating plate 203 are far from the forming cavity, the forming cavity will automatically close. Then, starting the demolding cylinder 109 will move the formed connecting pipe two downwards. The downward movement of the connecting pipe two will push the perforated heating plate 203 downwards. When the perforated heating plate 203 is in full contact with the connecting pipe one, starting the perforated heating plate 203 will quickly heat the connecting surfaces of connecting pipe one and connecting pipe two. When the connecting surfaces are heated to a certain temperature, starting the shifting cylinder 206 again will move the perforated heating plate 203 to the left. When the holes on the perforated heating plate 203 correspond to the forming cavity again, starting the demolding cylinder 109 will move the three heated connecting pipes two downwards to fully contact the heated surfaces of the three connecting pipes one. This quickly completes the in-mold welding of multiple sets of pipes.

[0033] A molding method includes the following steps: S1. The injection plastic is transferred through three injection nozzles 123 to the interiors of the first molding chamber 104, the second molding chamber 105, and the third molding chamber 106 of the pipe, and different amounts of injection plastic are injected into different chambers. S2. After injection molding is completed, cold water is supplied to the interior of cold water pipe 118 and cold water pipe 21 respectively. Cold water pipe 118 injects cold water into the interior of the external cooling tank 117, and cold water pipe 2121 injects cold water into the interior of the internal cooling tank 120. By using the external cooling tank 117 and the internal cooling tank 120 together, the injection molded part can be cooled inside and outside at the same time, which speeds up the molding process of the injection molded part. Then, return pipe 119 and return pipe 2122 can discharge the water in the cooling tank that has been neutralized by heat, which facilitates the cold circulation of water in the cooling tank. S3. After molding, first control the shifting cylinder 115 to start and drive the perforated baffle 114 to move to the right. When the holes on the perforated baffle 114 correspond one-to-one with the three molding cavities, the channels of the three molding cavities are opened. Then control the demolding cylinder 109 to start and drive the main drive plate 110 to move downward. The downward movement of the main drive plate 110 can drive the driven support rod 112 and the demolding ring 111 to move downward at the same time. The downward movement of the demolding ring 111 can drive the three types of pipes after molding to move downward at the same time. When the three types of pipes contact the upper surface of the perforated baffle 208, the adjustment of the welding position of the connecting pipe is completed. S4. Repeat steps S1-S2 above to complete the injection molding of the second connecting pipe; S5. During welding, first, start the shifting cylinder 206 to move the perforated heating plate 203 to the right. When the holes on the perforated heating plate 203 are far from the forming cavity, the forming cavity will automatically close. Then, start the demolding cylinder 109 to move the formed docking pipe 2 downward. The downward movement of the docking pipe 2 will push the perforated heating plate 203 downward. When the perforated heating plate 203 is in full contact with the docking pipe 1, start the perforated heating plate 203 to quickly heat the docking surfaces of docking pipe 1 and docking pipe 2. When the docking surfaces are heated to a certain temperature, start the shifting cylinder 206 again to move the perforated heating plate 203 to the left. When the holes on the perforated heating plate 203 correspond to the forming cavity again, start the demolding cylinder 109 to move the three heated docking pipes 2 downward to fully contact the heated surfaces of the three docking pipes 1. At this time, the in-mold welding of multiple sets of pipes is quickly completed. S6. When welding is finished, first control the shift cylinder 3 209 to start, which will drive the perforated baffle 2 208 to move to the right. When the hole on the perforated baffle 2 208 corresponds to the position of each forming cavity, the channel of the forming cavity is opened. At this time, the multiple pipes after welding will be automatically discharged from the discharge port 116, thus quickly completing the discharge of the welded pipes. S7. Repeat the above steps to continuously perform pipe forming and welding work.

[0034] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-component multi-cavity in-mold welding forming mold characterized by, Include: The forming die component (1) is internally provided with a welding assembly (2); The assembly bottom plate (101) is fixedly connected with the equal-height support table (102) on the upper surface, the lower mold body (103) is fixedly connected on the upper surface of the equal-height support table (102), the pipeline one forming cavity (104) is arranged on the upper surface of the left end of the lower mold body (103), the pipeline two forming cavity (105) is arranged on the upper surface of the middle position of the lower mold body (103), and the pipeline three forming cavity (106) is arranged on the upper surface of the right end of the lower mold body (103), the four corners of the upper end surface of the lower mold body (103) are fixedly connected with one positioning column (107) respectively, the upper mold body (108) is clamped on the surface of the lower end of the positioning column (107), three forming columns with different diameters are arranged on the lower surface of the upper mold body (108), and the diameters of the forming columns decrease from left to right in sequence, and the four corners of the upper mold body (108) and the lower mold body (103) close to one end are fixed by bolts and nuts. The two side surfaces of the upper mold body (108) are fixedly installed with one demolding cylinder (109) respectively, the upper end of each demolding cylinder (109) is fixedly connected with a main drive plate (110), three demolding rings (111) are movably embedded above the forming columns and on the lower surface of the upper mold body (108), the lower surface of the main drive plate (110) is fixedly connected with three groups of driven supporting rods (112), and the lower end of each group of driven supporting rods (112) penetrates the top surface of the upper mold body (108) and is fixedly connected with the upper end surface of each demolding ring (111) respectively.

2. A multi-component multi-cavity in-mold welding forming mold according to claim 1, characterized in that, The upper end of the lower mold body (103) is provided with an upper main hole (113) on the two side surfaces, a hole baffle one (114) is inserted into the inner cavity of the upper main hole (113), and a transposition cylinder one (115) is fixedly installed on the right side surface of the upper end of the lower mold body (103), and the right end of the transposition cylinder one (115) is fixedly connected with the side surface of the right end of the hole baffle one (114).

3. A multi-component multi-cavity in-mold welding forming mold according to claim 2, wherein The lower surfaces of the lower mold body (103) and the equal-height support table (102) are provided with three discharge ports (116), and the diameters of the three discharge ports (116) from left to right are greater than the inner diameters of the pipeline one forming cavity (104), the pipeline two forming cavity (105) and the pipeline three forming cavity (106) in sequence.

4. A multi-component multi-cavity in-mold welding forming mold according to claim 3, characterized in that, The inner part of the upper end of the lower mold body (103) is provided with external cooling grooves (117) which surround the outer sides of the pipeline one forming cavity (104), the pipeline two forming cavity (105) and the pipeline three forming cavity (106) respectively, the left side surface of the upper end of the lower mold body (103) is provided with a cold water pipe one (118) which communicates with the left side chamber of the external cooling groove (117), and the right side surface of the upper end of the lower mold body (103) is provided with a return pipe one (119) which communicates with the right side chamber of the external cooling groove (117).

5. A multi-component multi-cavity in-mold welding forming mold according to claim 4, wherein The upper die body (108) is internally provided with an internally communicating internal cooling groove (120), the front surface of the left end of the upper die body (108) is provided with a cold water pipe two (121) in communication with the left end chamber of the internal cooling groove (120), and the front surface of the right end of the upper die body (108) is provided with a return pipe two (122) in communication with the right end chamber of the internal cooling groove (120).

6. A multi-component multi-cavity in-mold welding forming mold according to claim 5, wherein The front surface of the upper end of the lower die body (103) is provided with three injection nozzles (123) in communication with the pipe one forming cavity (104), the pipe two forming cavity (105) and the pipe three forming cavity (106) respectively.

7. A multi-component multi-cavity in-mold welding forming mold according to claim 6, wherein The welding assembly (2) comprises a middle movable hole (201) which is arranged in the middle position of the two side surfaces of the lower die body (103), a plurality of suitable springs (202) are fixedly connected to the lower surfaces of the inner cavities at the two ends of the middle movable hole (201) respectively, a hole heating plate (203) is inserted into the inner cavity of the upper end of the middle movable hole (201), the lower surface of the hole heating plate (203) is overlapped with the upper ends of the suitable springs (202), a limiting insertion hole (204) is arranged on the upper surface of the left end of the hole heating plate (203), a position adjusting plate (205) is inserted into the inner cavity of the limiting insertion hole (204), and a transposition cylinder two (206) is fixedly installed on the middle position of the left side surface of the lower die body (103) and fixedly connected with the right side surface of the position adjusting plate (205).

8. A multi-component multi-cavity in-mold welding forming mold according to claim 7, wherein A lower secondary hole (207) is arranged on the left side surface of the lower end of the lower die body (103), a hole baffle two (208) is inserted into the inner cavity of the lower secondary hole (207), and a transposition cylinder three (209) is fixedly installed on the right side surface of the lower end of the lower die body (103) and fixedly connected with the side surface of the right end of the hole baffle two (208).

9. A multi-component multi-cavity in-mold welding forming mold according to claim 8, wherein The inner walls of the lower ends of the pipe one forming cavity (104), the pipe two forming cavity (105) and the pipe three forming cavity (106) are all bonded with a plurality of positioning adhesive strips (210).

10. A molding method using the multi-component multi-cavity in-mold welding molding mold according to any one of claims 1 to 9, characterized by, The method comprises the following steps: S1, the injection molding material is transmitted to the interiors of the pipe one forming cavity (104), the pipe two forming cavity (105) and the pipe three forming cavity (106) through the three injection nozzles (123) respectively, and different amounts of injection molding material are injected into different chambers; S2, after the injection molding is completed, cold water is delivered into the interiors of the cold water pipe one (118) and the cold water pipe two (121) respectively, the cold water pipe one (118) injects cold water into the interior of the external cooling groove (117), the cold water pipe two (121) injects cold water into the interior of the internal cooling groove (120), the external cooling groove (117) and the internal cooling groove (120) are used in cooperation to cool the injection molded part inside and outside at the same time, the forming progress of the injection molded part is accelerated, then the return pipe one (119) and the return pipe two (122) can discharge the water neutralized by heat in the cooling groove, and the water in the cooling groove is conveniently cold-circulated; S3, after molding, first control the transposition cylinder one (115) to start driving the hole baffle one (114) to move to the right, when the hole position on the hole baffle one (114) corresponds to three molding cavities one by one, the channel opening of three molding cavities is completed, then control the demolding cylinder (109) to start to drive the main drive plate (110) to move downward, the main drive plate (110) moves downward to drive the driven branch rod (112) and the demolding ring (111) to move downward at the same time, the demolding ring (111) moves downward to drive the three types of pipe after molding to move downward at the same time, when the three types of pipe downward contact with the upper surface of the hole baffle two (208), the adjustment of the butt joint pipe one welding position is completed at this time; S4, repeat the steps of S1-S2 above to complete the injection molding of butt joint pipe two; S5, when welding, first control the transposition cylinder two (206) to start to drive the hole heating plate (203) to move to the right, when the hole position on the hole heating plate (203) is away from the molding cavity, the molding cavity will be automatically closed, then control the demolding cylinder (109) to start to drive the molded butt joint pipe two to move downward, the butt joint pipe two moves downward to push the hole heating plate (203) to move downward, when the hole heating plate (203) downward fully contacts with the butt joint pipe one, then control the hole heating plate (203) to start to quickly heat the butt joint surface of the butt joint pipe one and the butt joint pipe two, when the butt joint surface is heated, control the transposition cylinder two (206) to start to drive the hole heating plate (203) to move to the left, when the hole position on the hole heating plate (203) corresponds to the molding cavity again, then control the demolding cylinder (109) to start to drive the three heated butt joint pipe two to downward fully contact with the heated surface of the three butt joint pipe one, then the in-mold welding of multiple pipe groups is quickly completed; S6, when the welding is completed, first control the transposition cylinder three (209) to start to drive the hole baffle two (208) to move to the right, when the hole position on the hole baffle two (208) corresponds to the position of each molding cavity one by one, the channel opening of the molding cavity is completed at this time, then the multiple pipes after welding will be automatically discharged from the discharge port (116), so that the discharge of the welded pipe is quickly completed; S7, repeat the above steps to continuously perform the molding and welding work of the pipe.

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