Injection molding device for injection molding part in refrigerator and molding method of injection molding device

Abstract

The invention relates to the technical field of injection molding machining, and particularly discloses an injection molding device for an injection molding part in a refrigerator and a molding method thereof.The injection molding device comprises a machining table, a control module is fixedly installed on the outer wall of one end of the machining table, and a hydraulic driving structure is fixedly installed at one end of the upper surface of the machining table; a second fixing table is fixedly mounted in the middle of the upper surface of the machining table. According to the injection molding material replacement device, the adjusting assembly is arranged in the material replacement pipe, the positions of the two plugging blocks are controlled by pulling the abutting rod, a discharging channel in the material replacement pipe can be changed, and then injection molding materials in the material storage tank are guided to be input into the two extrusion molding assemblies under manual control; and time and materials do not need to be spent on fusion and transition between a new injection molding material and an original injection molding material, the injection molding material for producing the injection molding clamping strip in the refrigerator is conveniently, efficiently and rapidly replaced, and then the production efficiency of the injection molding clamping strip in the refrigerator is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding processing, and particularly relates to an injection molding device and a molding method for injection molded parts inside a refrigerator. Background Art

[0002] With the rapid development of the refrigerator industry, consumers' demands for the appearance and functions of refrigerators are increasing day by day. As an important part of the refrigerator, the appearance quality, dimensional accuracy, and production efficiency of the injection molded parts inside the refrigerator directly affect the overall quality and market competitiveness of the refrigerator. Taking the strips at both ends of the glass partition in the refrigerator as an example, such injection molded parts not only need to have high dimensional accuracy to ensure the stable installation of the glass partition, but also need to have good appearance quality to meet the aesthetic needs of consumers. In addition, with the acceleration of the replacement cycle of refrigerator products, the replacement frequency of injection molding materials is gradually increasing, which puts higher requirements on the flexibility and production efficiency of the injection molding device.

[0003] In the production process of traditional injection molded parts inside the refrigerator, a single extrusion component is usually used for injection molding. When it is necessary to replace the injection molding material, for example, switching from one color or material of the strip to another, it is necessary to fuse and transition the new injection molding material with the original one. This process not only consumes time and materials, but also reduces production efficiency, and may even affect product quality due to uneven mixing of materials. In addition, during the injection molding process of the traditional injection molding device, the injection molding material is likely to remain in the extrusion pipe, resulting in waste, and the heat in the extrusion pipe is easily transferred to the storage tank, affecting the state of the injection molding material in the storage tank, leading to the problem that the injection molding material in the storage tank partially melts and then cakes. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to provide an injection molding device and a molding method for injection molded parts inside a refrigerator.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An injection molding device for injection molded parts inside a refrigerator, comprising a processing table. A control module is fixedly installed on the outer wall at one end of the processing table. A hydraulic driving structure is fixedly installed at one end of the upper surface of the processing table. A second fixed table is fixedly installed at the middle position of the upper surface of the processing table. A mold is arranged between the hydraulic driving structure and the extrusion assembly. A movable table is slidably installed on the upper surface of the processing table on the other side of the second fixed table. An extrusion assembly is fixedly installed on the upper surface of the movable table. The number of extrusion assemblies is two groups, and the two groups of extrusion assemblies are switched for use. A material changing pipe is fixedly connected between one ends of the two groups of extrusion assemblies. An adjusting assembly is movably installed inside the material changing pipe. A material storage assembly is fixedly installed above the material changing pipe. The extrusion assembly specifically includes an extrusion pipe fixedly connected to the upper surface of the movable table. A threaded transmission rod is rotatably installed inside the extrusion pipe. An extrusion head for cooperating with the second fixed table is fixedly installed at the end of the extrusion pipe. And a heating block is fixedly installed on the outer wall of the extrusion pipe. The outer wall of the upper end of the extrusion pipe is fixedly connected with a butt joint pipe below the material changing pipe. And the butt joint pipes in the two groups of extrusion assemblies are symmetrically distributed below the material changing pipe. The adjusting assembly includes two blocking blocks slidably installed inside the material changing pipe. And the two blocking blocks are respectively correspondingly distributed with the upper ends of the two butt joint pipes. A connecting rod is fixedly connected between the two blocking blocks. A return spring is arranged at both ends of the material changing pipe. The two ends of the return spring are respectively fixedly connected with the end of the blocking block and the inner wall of the end of the material changing pipe. And a rubber pad is fixedly connected to the outer wall of the end of the blocking block close to the return spring. A resisting rod is fixedly installed at the center position of the outer wall of the end of one of the blocking blocks close to the return spring. The other end of the resisting rod penetrates through the center position of the material changing pipe and is slidably connected with the material changing pipe.

[0007] Preferably, air pumps are arranged at corresponding positions on both sides of the outer wall of the processing table and the material changing pipe. The output ends of the two air pumps are fixedly connected with air delivery pipes. The other ends of the two air delivery pipes are respectively fixedly connected with the outer walls of the two ends of the material changing pipe and are communicated with the inside of the material changing pipe.

[0008] Preferably, a blocking assembly is arranged inside the butt joint pipe. The blocking assembly specifically includes a blocking block. The blocking block is of a spherical structure and is equidistantly provided with three grooves on the outer wall. A rotating shaft is fixedly installed at the center position of the blocking block. The two ends of the rotating shaft are respectively rotatably connected with the inner wall of the butt joint pipe. And a servo motor is fixedly installed at the corresponding position of the outer wall of the butt joint pipe and the end of the rotating shaft.

[0009] Preferably, the mold specifically includes a movable mold, which is fixedly connected to the output end of the hydraulic driving structure. The output end of the hydraulic driving structure is fixedly connected with limit rods corresponding to the four corners of the movable mold. Through holes for cooperating with the limit rods are formed through the second fixed table, and the ends of the limit rods are slidably connected to the second fixed table. A second cooling structure is movably installed inside the movable mold. A fixed mold for cooperating with the movable mold is fixedly installed on the outer wall of the second fixed table. First cooling structures are fixedly connected to both sides of the fixed mold.

[0010] Preferably, a protective shell is fixedly installed on the processing table outside the mold. A limiting component is fixedly installed at a position corresponding to the second fixed table inside the protective shell. The limiting component specifically includes a rectangular plate fixedly connected to the protective shell. A limiting groove is formed at the lower end of the rectangular plate, and the end of the extrusion head is slidably located inside the limiting groove. A plurality of limiting holes for cooperating with the limit rods are correspondingly formed at the lower end of the rectangular plate.

[0011] Preferably, a guiding component is arranged at a position corresponding to the limiting groove on the outer wall of the second fixed table. The guiding component specifically includes two groups of symmetrically arranged guiding strips fixedly installed on the outer wall of the second fixed table. An injection hole is formed between the two groups of guiding strips on the outer wall of the second fixed table. Induction rods are rotatably installed at one ends of the two groups of guiding strips close to the injection hole, and the two induction rods are centrally symmetrically distributed on the periphery of the injection hole. Contact switches are fixedly installed at positions corresponding to the ends of the two induction rods on the outer wall of the second fixed table.

[0012] Preferably, an aggregate trough is formed on the upper surface of the processing table between the movable mold and the fixed mold, and a movable door is movably installed at a position on the side wall of the processing table corresponding to the aggregate trough; The material storage component specifically includes a storage tank. A blanking pipe is fixedly installed at the bottom of the storage tank. The lower end of the blanking pipe is fixedly connected to the outer wall of the upper end of the material changing pipe, and the inside of the blanking pipe is communicated with the inside of the material changing pipe.

[0013] Preferably, an adjusting block is fixedly installed at the end of the movable table. A first fixed table is fixedly installed on the outer wall of one end of the processing table corresponding to the adjusting block. A rectangular groove matching the adjusting block is formed at the upper end of the first fixed table, and the adjusting block is slidably installed in the rectangular groove. A first electric telescopic rod is fixedly installed on the outer wall of one end of the processing table, and the output end of the first electric telescopic rod is fixedly connected to the outer wall of one end of the adjusting block.

[0014] Preferably, the pressing rod is arranged inside the return spring. Positioning holes are formed through both ends and the middle position of the pressing rod. A rectangular block is fixedly installed at a position on the end of the material changing pipe corresponding to the pressing rod. A plug pin is slidably installed on the rectangle, and the end of the plug pin is inserted into the inside of one of the positioning holes.

[0015] A method for forming injection molded parts inside a refrigerator specifically includes the following steps:

[0016] Step 1: Place the granular injection molding material inside the storage tank. The injection molding material enters the inside of the material changing pipe through the feeding pipe.

[0017] Step 2: When both reset springs are in a normal state, the two blocking blocks respectively block the upper ends of the two docking pipes. Define the two docking pipes as the left docking pipe and the right docking pipe. At this time, the end of the bolt slidably installed on the rectangular block is inserted into the positioning hole formed through the middle position of the resisting rod.

[0018] Step 3: When feeding is required, the user can push the resisting rod inward. When the resisting rod pushes the blocking block fixedly connected to it deep into the inside of the material changing pipe, under the action of the connecting rod, the two blocking blocks move synchronously. The blocking block blocking the upper end of the left docking pipe moves away, and the other blocking block blocks the channel through which the material in the material changing pipe can move to the right docking pipe. At this time, the end of the bolt can be inserted into the positioning hole opened at the end of the resisting rod away from the blocking block. At this time, the material contained in the storage tank enters the inside of the left docking pipe through the feeding pipe and the material changing pipe, and then the injection molding material is heated by the corresponding extrusion assembly and then injected into the mold cavity formed after the movable mold and the fixed mold are clamped. When the injection molding material is formed in the mold cavity, it is the clamping strip assembled at both ends of the inner partition of the refrigerator.

[0019] Step 4: When the injection molding device needs to replace the injection molding material, after all the injection molding material inside the storage assembly and the material changing pipe enters the docking pipe, the user can pull the end of the resisting rod to move the two blocking blocks. After the positions of the two blocking blocks are switched, the upper end of the right docking pipe is in an open state. At this time, the end of the bolt can be inserted into the positioning hole opened at the end of the resisting rod close to the blocking block to limit the adjusted positions of the two blocking blocks. Then, the replaced material in the storage tank can enter the inside of the right docking pipe through the feeding pipe and the material changing pipe, and then the injection molding material is processed by another set of extrusion assemblies.

[0020] Step 5: After switching the positions of the two blocking blocks, the gas transmission pipe communicating with the inside of the material changing pipe can continuously pump gas into the inside of the material changing pipe through an air pump. The gas transmission pipe inputs gas into the inside of the material changing pipe, and the gas can be continuously pumped into the inside of the left docking pipe and then into the inside of the extrusion pipe. During the process of continuously pumping gas into the inside of the extrusion pipe, the air pressure inside the extrusion pipe can push the residual injection molding material inside the extrusion pipe towards the extrusion head.

[0021] Step 6: When the movable table slides, the positions of the two extrusion assemblies can be switched. Among them, the ends of the two extrusion heads both slide under the action of the guiding assembly. When the extrusion head moves to one end of the guiding bar close to the injection hole, the extrusion head presses the outer wall of the induction rod. As the extrusion head continues to move, the inclined induction rod is squeezed and rotated to the horizontal. When the end of the induction rod triggers the contact switch, the first electric telescopic rod can stop operating synchronously. At this time, the end of the extrusion head is accurately aligned with the injection hole. After the injection material is heated inside the extrusion pipe, it can be injected into the mold cavity between the movable mold and the fixed mold through the injection hole for shaping. When the replaced extrusion head is aligned with the injection hole, new injection material can be injected into the interior of the storage tank, and then the replaced new injection material is input into the corresponding extrusion assembly through the material replacement pipe for processing.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By arranging an adjusting assembly inside the material replacement pipe, the positions of the two blocking blocks are controlled by pulling the resisting rod, so that the material feeding channel inside the material replacement pipe can be changed, thereby guiding the injection material in the storage tank to be input into the two extrusion assemblies under manual control. When it is necessary to replace the new injection material, there is no need to spend time and materials to fuse and transition between the new injection material and the original injection material, which is convenient for efficiently and quickly replacing the injection material for producing the injection card strip inside the refrigerator, thereby improving the production efficiency of the injection card strip inside the refrigerator.

[0024] By arranging a blocking block, the rotating shaft is driven to rotate by the servo motor, and the blocking block fixedly connected to the rotating shaft can continuously rotate. A groove is formed on the outer wall of the blocking block, which can continuously convey the injection material inside the docking pipe to the inside of the extrusion pipe. Moreover, the arrangement of the blocking block can prevent the heat in the extrusion pipe from directly contacting the injection material in the storage tank, thereby affecting the state of the injection material in the storage tank.

[0025] By arranging an air pump and an air delivery pipe, gas is input into the interior of the material replacement pipe through the air delivery pipe. The gas can be continuously pumped into the interior of the docking pipe and then into the interior of the extrusion pipe. During the process of continuously pumping gas into the interior of the extrusion pipe, the air pressure inside the extrusion pipe can push the residual injection material inside the extrusion pipe towards the extrusion head, and then the injection material corresponding to this group of extrusion assemblies is injected into the mold cavity between the movable mold and the fixed mold through the extrusion head for forming, which helps to make full use of the injection material inside the extrusion pipe and avoid waste caused by the residual injection material remaining inside the extrusion pipe. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram in an embodiment of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the mold in an embodiment of the present invention;

[0029] Figure 3 It is a schematic structural diagram of the air pump in an embodiment of the present invention;

[0030] Figure 4 It is a schematic structural diagram of the adjusting block in an embodiment of the present invention;

[0031] Figure 5 It is a schematic sectional view of the material changing pipe structure in an embodiment of the present invention;

[0032] Figure 6 It is a schematic structural diagram of the internal structure of the material changing pipe in an embodiment of the present invention;

[0033] Figure 7 It is a schematic structural diagram of the guiding component in an embodiment of the present invention;

[0034] Figure 8 In an embodiment of the present invention Figure 3 Local enlarged view at position A;

[0035] Figure 9 In an embodiment of the present invention Figure 5 Local enlarged view at position B;

[0036] Figure 10 It is a schematic diagram of the position switching of the plugging block in an embodiment of the present invention.

[0037] In the figure: 1, processing table; 2, hydraulic drive structure; 3, control module; 4, protective shell; 5, first fixed table; 6, first electric telescopic rod; 7, material storage assembly; 701, material storage tank; 702, blanking pipe; 8, material changing pipe; 9, extrusion molding assembly; 901, extrusion molding pipe; 902, heating block; 903, extrusion molding head; 904, threaded transmission rod; 905, docking pipe; 10, mold; 1001, movable mold; 1002, fixed mold; 1003, first cooling structure; 1004, second cooling structure; 1005, limiting rod; 11, movable door; 12, air pump; 13, adjusting block; 14, air delivery pipe; 15, movable table; 16, adjusting assembly; 1601, blocking block; 1602, return spring; 1603, resisting rod; 1604, connecting rod; 1605, rubber pad; 1606, bolt; 17, blocking assembly; 1701, blocking block; 1702, rotating shaft; 1703, servo motor; 18, limiting assembly; 1801, rectangular plate; 1802, limiting groove; 1803, limiting hole; 19, second fixed table; 20, guiding assembly; 2001, guiding strip; 2002, injection molding hole; 2003, sensing rod; 2004, contact switch. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0039] Refer to Figure 1-10 , an injection molding device for injection molded parts in a refrigerator, including a processing table 1, a control module 3 is fixedly installed on the outer wall of one end of the processing table 1, the control module 3 includes a display screen and a controller (model CPM1A PLC controller) and other structures. A hydraulic drive structure 2 is fixedly installed at one end of the upper surface of the processing table 1. The hydraulic drive structure 2 is an existing hydraulic drive device, specifically including a hydraulic cylinder and a piston rod, etc. A second fixed table 19 is fixedly installed at the middle position of the upper surface of the processing table 1. A mold 10 is arranged between the hydraulic drive structure 2 and the extrusion molding assembly 9. A movable table 15 is slidably installed on the upper surface of the processing table 1 on the other side of the second fixed table 19. An extrusion molding assembly 9 is fixedly installed on the upper surface of the movable table 15. The number of extrusion molding assemblies 9 is two groups, and the two groups of extrusion molding assemblies 9 are switched for use. A material changing pipe 8 is fixedly connected between one ends of the two groups of extrusion molding assemblies 9. An adjusting assembly 16 is movably installed inside the material changing pipe 8. A material storage assembly 7 is fixedly installed above the material changing pipe 8;

[0040] The extrusion assembly 9 specifically includes an extrusion pipe 901 fixedly connected to the upper surface of the movable table 15. A threaded transmission rod 904 is rotatably installed inside the extrusion pipe 901. An extrusion head 903 used in cooperation with the second fixed table 19 is fixedly installed at the end of the extrusion pipe 901. A heating block 902 is fixedly installed on the outer wall of the extrusion pipe 901. A docking pipe 905 is fixedly connected to the outer wall of the upper end of the extrusion pipe 901 below the material changing pipe 8. The docking pipes 905 in the two extrusion assemblies 9 are symmetrically distributed below the material changing pipe 8;

[0041] The adjustment assembly 16 includes two blocking blocks 1601 slidably installed inside the material changing pipe 8. The two blocking blocks 1601 are respectively correspondingly distributed at the upper ends of the two docking pipes 905. A connecting rod 1604 is fixedly connected between the two blocking blocks 1601. Return springs 1602 are arranged at both ends of the material changing pipe 8. The two ends of the return spring 1602 are respectively fixedly connected to the end of the blocking block 1601 and the inner wall of the end of the material changing pipe 8. A rubber pad 1605 is fixedly connected to the outer wall of the end of the blocking block 1601 close to the return spring 1602. A resisting rod 1603 is fixedly installed at the central position of the outer wall of the end of one of the blocking blocks 1601 close to the return spring 1602. The other end of the resisting rod 1603 passes through the central position of the material changing pipe 8 and is slidably connected to the material changing pipe 8;

[0042] Place the granular injection molding material inside the storage tank 701. The injection molding material enters the inside of the material changing pipe 8 through the feeding pipe 702. When both of the two reset springs 1602 are in the normal state, the two blocking blocks 1601 respectively block the upper ends of the two docking pipes 905. Define the two docking pipes 905 as the left docking pipe 905 and the right docking pipe 905 respectively. At this time, the end of the bolt 1606 slidably installed on the rectangular block is inserted into the positioning hole opened in the middle position of the abutting rod 1603. When feeding is required, the user can push the abutting rod 1603 inward. When the abutting rod 1603 pushes the blocking block 1601 fixedly connected to it deep into the inside of the material changing pipe 8, under the action of the connecting rod 1604, the two blocking blocks 1601 move synchronously. The blocking block 1601 blocking the upper end of the left docking pipe 905 moves away from the outside of the docking pipe 905, and the other blocking block 1601 blocks the channel through which the material in the material changing pipe 8 can move to the right docking pipe 905. At this time, the end of the bolt 1606 can be inserted into the positioning hole opened at one end of the abutting rod 1603 away from the blocking block 1601 to limit the adjusted positions of the two blocking blocks 1601. Then the material contained in the storage tank 701 can only enter the inside of the left docking pipe 905 through the feeding pipe 702 and the material changing pipe 8, and then the injection molding material is heated by the corresponding extrusion assembly 9 and then injected into the mold cavity formed after the movable mold 1001 and the fixed mold 1002 are clamped. When the injection molding material is formed in the mold cavity, it is the clamping strip assembled at both ends of the inner partition of the refrigerator;

[0043] When the injection molding device needs to replace the injection molding material, after the inside of the storage assembly 7 and the material changing pipe 8 all enter the inside of the docking pipe 905, the user can pull the end of the abutting rod 1603 to move the two blocking blocks 1601. After the positions of the two blocking blocks 1601 are switched, the upper end of the right docking pipe 905 is in an open state. At this time, the end of the bolt 1606 can be inserted into the positioning hole opened at one end of the abutting rod 1603 close to the blocking block 1601 to limit the adjusted positions of the two blocking blocks 1601. Then the replaced material in the storage tank 701 can enter the inside of the right docking pipe 905 through the feeding pipe 702 and the material changing pipe 8, and then the injection molding material is processed by another set of extrusion assembly 9.

[0044] As a technical optimization scheme of the present invention, air pumps 12 are provided at the corresponding positions on both outer walls of the processing table 1 and the material changing pipe 8. The output ends of the two air pumps 12 are fixedly connected with air delivery pipes 14. The other ends of the two air delivery pipes 14 are respectively fixedly connected with the outer walls of both ends of the material changing pipe 8 and are communicated with the inside of the material changing pipe 8;

[0045] After switching the positions of the two plugging blocks 1601, the gas transmission pipe 14 internally connected to the refueling pipe 8 can continuously pump gas into the interior of the refueling pipe 8 through the air pump 12. Rubber pads 1605 are fixedly connected to the ends of the plugging blocks 1601 away from the connecting rod 1604, which can be used to ensure the sealing between the plugging blocks 1601 and the inner wall of the refueling pipe 8. When the upper end of the right docking pipe 905 is open and in the feeding state, gas is input into the interior of the refueling pipe 8 through the gas transmission pipe 14, and the gas can be continuously pumped into the interior of the left docking pipe 905 and then into the interior of the extrusion pipe 901. During the process of continuously pumping gas into the interior of the extrusion pipe 901, the air pressure inside the extrusion pipe 901 can push the residual injection molding material inside the extrusion pipe 901 towards the extrusion head 903, and then the injection molding material corresponding to the extrusion assembly 9 is injected into the space between the movable mold 1001 and the fixed mold 1002 through the extrusion head 903 for molding, avoiding waste of the residual injection molding material inside the extrusion pipe 901.

[0046] As a technical optimization solution of the present invention, a blocking assembly 17 is provided inside the docking pipe 905. The blocking assembly 17 specifically includes a blocking block 1701. The blocking block 1701 has a spherical structure, and three grooves are equidistantly arranged on the outer wall. A rotating shaft 1702 is fixedly installed at the central position of the blocking block 1701. The two ends of the rotating shaft 1702 are respectively rotatably connected to the inner wall of the docking pipe 905, and a servo motor 1703 is fixedly installed at the corresponding position of the outer wall of the docking pipe 905 and the end of the rotating shaft 1702.

[0047] When heating the injection molding material through the extrusion assembly 9, the heat inside the extrusion pipe 901 is blocked by the blocking block 1701, which can prevent the heat in the extrusion pipe 901 from directly contacting the injection molding material in the storage tank 701, thereby affecting the state of the injection molding material in the storage tank 701. Among them, the rotating shaft 1702 is driven to rotate by the servo motor 1703, and the blocking block 1701 fixedly connected to the rotating shaft 1702 can continuously rotate. Grooves are provided on the outer wall of the blocking block 1701, which can continuously transport the injection molding material inside the docking pipe 905 into the interior of the extrusion pipe 901.

[0048] As a technical optimization solution of the present invention, the mold 10 specifically includes a movable mold 1001. The movable mold 1001 is fixedly connected to the output end of the hydraulic driving structure 2. Limiting rods 1005 are fixedly connected to the corresponding positions at the four corners of the output end of the hydraulic driving structure 2. Through holes for cooperating with the limiting rods 1005 are provided through the second fixing table 19, and the ends of the limiting rods 1005 are slidably connected to the second fixing table 19. A second cooling structure 1004 is movably installed inside the movable mold 1001. A fixed mold 1002 cooperating with the movable mold 1001 is fixedly installed on the outer wall of the second fixing table 19. First cooling structures 1003 are fixedly connected to both sides of the fixed mold 1002.

[0049] In this device, the movable mold 1001 and the fixed mold 1002 are existing molds 10 for injection molding of refrigerator gaskets. The interior of the movable mold 1001 includes an ejection structure. Under the driving action of the hydraulic driving structure 2, the movable mold 1001 can slide above the processing table 1. The end of the limiting rod 1005 is slidably connected to the second fixed table 19 to ensure the accuracy of the movable mold 1001 and the fixed mold 1002 when they are closed.

[0050] As a technical optimization scheme of the present invention, a protective shell 4 is fixedly installed on the processing table 1 outside the mold 10. A limiting component 18 is fixedly installed at a position corresponding to the second fixed table 19 inside the protective shell 4. The limiting component 18 specifically includes a rectangular plate 1801 fixedly connected to the protective shell 4. A limiting groove 1802 is opened at the lower end of the rectangular plate 1801, and the end of the extrusion head 903 is located inside the limiting groove 1802 and slides. A plurality of limiting holes 1803 for cooperating with the limiting rod 1005 are also correspondingly opened at the lower end of the rectangular plate 1801;

[0051] Through the arrangement of the limiting component 18, the edge position of the protective shell 4 can be strengthened, and the limiting groove 1802 opened at the lower end of the rectangular plate 1801 can limit the extrusion head 903 when it slides. When the extrusion head 903 slides, the outer wall of it contacts the inner wall of the limiting groove 1802.

[0052] As a technical optimization scheme of the present invention, a guiding component 20 is arranged at a position corresponding to the limiting groove 1802 on the outer wall of the second fixed table 19. The guiding component 20 specifically includes two groups of symmetrically arranged guiding strips 2001 fixedly installed on the outer wall of the second fixed table 19. An injection hole 2002 is opened on the outer wall of the second fixed table 19 between the two groups of guiding strips 2001. An induction rod 2003 is rotatably installed at one end of each of the two groups of guiding strips 2001 close to the injection hole 2002, and the two induction rods 2003 are centrosymmetrically distributed on the circumference of the injection hole 2002. Contact switches 2004 are fixedly installed at positions corresponding to the ends of the two induction rods 2003 on the outer wall of the second fixed table 19;

[0053] When the movable table 15 slides, the positions of the two sets of extrusion components 9 can be switched. Among them, the ends of the two extrusion heads 903 slide under the action of the guiding component 20. When the extrusion head 903 moves to one end of the guiding bar 2001 close to the injection hole 2002, the extrusion head 903 presses against the outer wall of the induction rod 2003. As the extrusion head 903 continues to move, the induction rod 2003 in an inclined state is pressed and rotated to the horizontal. When the end of the induction rod 2003 triggers the contact switch 2004, the first electric telescopic rod 6 can stop operating synchronously. The induction rod 2003 is rotationally connected to the end of the guiding bar 2001 through a rotating shaft, and a torsion spring is arranged at the end of the rotating shaft. After the induction rod 2003 loses the extrusion of the extrusion head 903, it can automatically reset and return to the inclined state. At this time, the end of the extrusion head 903 is accurately aligned with the injection hole 2002. After the injection material is heat-treated inside the extrusion pipe 901, it can be injected into the space between the movable mold 1001 and the fixed mold 1002 through the injection hole 2002 for shaping.

[0054] As a technical optimization scheme of the present invention, a collecting groove is provided on the upper surface of the processing table 1 between the movable mold 1001 and the fixed mold 1002, and a movable door 11 is movably installed at a position on the side wall of the processing table 1 corresponding to the collecting groove;

[0055] Among them, the movable mold 1001 and the fixed mold 1002 are existing refrigerator strip forming molds 10. A top-out structure is arranged inside the movable mold 1001. After the refrigerator strip is formed, the formed strip is pushed out by the top-out structure and falls into the collecting groove for collection. The user can open the movable door 11 to take out the formed strip for processing in the subsequent process.

[0056] As a technical optimization scheme of the present invention, an adjusting block 13 is fixedly installed at the end of the movable table 15. One end outer wall of the processing table 1 corresponding to the adjusting block 13 is fixedly installed with a first fixed table 5. A rectangular groove matching the adjusting block 13 is provided at the upper end of the first fixed table 5, and the adjusting block 13 is slidably installed in the rectangular groove. One end outer wall of the processing table 1 is fixedly installed with a first electric telescopic rod 6, and the output end of the first electric telescopic rod 6 is fixedly connected to one end outer wall of the adjusting block 13;

[0057] The user controls the telescopic end of the first electric telescopic rod 6 to expand and contract, thereby changing the position of the adjusting block 13. The adjusting block 13 is fixedly connected to the movable table 15, and the movable table 15 is slidably connected to the upper surface of the processing table 1. Then, the movable table 15 can be driven to slide through the adjusting component 16. When the movable table 15 slides, the positions of the two sets of extrusion components 9 can be switched.

[0058] As a technical optimization solution of the present invention, the material storage component 7 specifically includes a material storage tank 701. A blanking pipe 702 is fixedly installed at the bottom of the material storage tank 701. The lower end of the blanking pipe 702 is fixedly connected to the outer wall of the upper end of the material changing pipe 8, and the inside of the blanking pipe 702 is communicated with the inside of the material changing pipe 8;

[0059] The injection molding material is stored in the material storage tank 701. The granular injection molding material in the material storage tank 701 can gradually enter the inside of the material changing pipe 8 through the blanking pipe 702, and then enter the inside of the corresponding extrusion component 9.

[0060] As a technical optimization solution of the present invention, the abutting rod 1603 is arranged inside the return spring 1602. Positioning holes are penetrated through both ends and the middle position of the abutting rod 1603. A rectangular block is fixedly installed at the corresponding position of the end of the material changing pipe 8 and the abutting rod 1603. A plug 1606 is slidably installed on the rectangle, and the end of the plug 1606 is inserted into the inside of one of the positioning holes;

[0061] By sliding the plug 1606 on the rectangular block and inserting it into the corresponding positioning hole, the three position states of the two plugging blocks 1601 can be limited.

[0062] A method for forming injection molded parts in a refrigerator specifically includes the following steps:

[0063] Step 1, place the granular injection molding material inside the material storage tank 701, and the injection molding material enters the inside of the material changing pipe 8 through the blanking pipe 702;

[0064] Step 2, when both return springs 1602 are in a normal state, the two plugging blocks 1601 respectively block the upper ends of the two docking pipes 905. The two docking pipes 905 are respectively defined as the left docking pipe 905 and the right docking pipe 905. At this time, the end of the plug 1606 slidably installed on the rectangular block is inserted into the positioning hole penetrated through the middle position of the abutting rod 1603;

[0065] Step 3: When feeding is required, the user can push the abutting rod 1603 inward. When the abutting rod 1603 pushes the plugging block 1601 fixedly connected thereto deeper into the inside of the material changing pipe 8, under the action of the connecting rod 1604, the two plugging blocks 1601 move synchronously. The plugging block 1601 blocking the upper end of the left docking pipe 905 is moved away, and the other plugging block 1601 blocks the passage through which the material in the material changing pipe 8 can move toward the right docking pipe 905. At this time, the end of the bolt 1606 can be inserted into the positioning hole opened at one end of the abutting rod 1603 away from the plugging block 1601. At this time, the material contained in the storage tank 701 enters the inside of the left docking pipe 905 through the material discharging pipe 702 and the material changing pipe 8, and then after the corresponding extrusion assembly 9 heats the injection material, it is injected into the mold cavity formed after the movable mold 1001 and the fixed mold 1002 are clamped. When the injection material is formed in the mold cavity, it is the clamping strip assembled at both ends of the inner partition of the refrigerator;

[0066] Step 4: When the injection device needs to replace the injection material, after all the injection material inside the storage assembly 7 and the material changing pipe 8 enters the inside of the docking pipe 905, the user can pull the end of the abutting rod 1603 to move the two plugging blocks 1601. After the positions of the two plugging blocks 1601 are switched, the upper end of the right docking pipe 905 is in an open state. At this time, the end of the bolt 1606 can be inserted into the positioning hole opened at one end of the abutting rod 1603 close to the plugging block 1601 to limit the adjusted positions of the two plugging blocks 1601. Then the replaced material in the storage tank 701 can enter the inside of the right docking pipe 905 through the material discharging pipe 702 and the material changing pipe 8, and then another set of extrusion assembly 9 processes the injection material;

[0067] Step 5: After switching the positions of the two plugging blocks 1601, the gas transmission pipe 14 communicated with the inside of the material changing pipe 8 can continuously pump gas into the inside of the material changing pipe 8 through the air pump 12. The gas transmission pipe 14 inputs gas into the inside of the material changing pipe 8, and the gas can be continuously pumped into the inside of the left docking pipe 905 and then enter the inside of the extrusion pipe 901. During the process of continuously pumping gas into the inside of the extrusion pipe 901, the air pressure inside the extrusion pipe 901 can push the residual injection material inside the extrusion pipe 901 toward the extrusion head 903;

[0068] Step 6: When the movable table 15 slides, the positions of the two extrusion assemblies 9 can be switched. Among them, the ends of the two extrusion heads 903 slide under the action of the guiding assembly 20. When the extrusion head 903 moves to one end of the guiding bar 2001 close to the injection hole 2002, the extrusion head 903 presses the outer wall of the induction rod 2003. The extrusion head 903 continues to move and squeezes the inclined induction rod 2003 to rotate to the horizontal. When the end of the induction rod 2003 triggers the contact switch 2004, the first electric telescopic rod 6 can stop operating synchronously. At this time, the end of the extrusion head 903 is accurately aligned with the injection hole 2002. After the injection material is heated inside the extrusion pipe 901, it can be injected into the space between the movable mold 1001 and the fixed mold 1002 through the injection hole 2002 for shaping. When the replaced extrusion head 903 is aligned with the injection hole 2002, new injection material can be injected into the interior of the storage tank 701, and then the replaced new injection material is input into the corresponding extrusion assembly 9 through the material replacement pipe 8 for processing.

[0069] When the present invention is in use, the injection material is injected between the movable mold 1001 and the fixed mold 1002. Through the mold grooves formed on the movable mold 1001 and the fixed mold 1002, the clamping strips on both sides of the glass partition inside the refrigerator can be injection molded. After the injection molding is completed, the injection molded clamping strips are ejected by the ejection mechanism built inside the movable mold 1001. The plastic clamping strip fittings inside the refrigerator that have been ejected fall into the interior of the aggregate chute for collection. Among them, after the working procedure of the device is preset by the control module 3, under the action of the controller, the hydraulic drive structure 2 drives the movable mold 1001 and the fixed mold 1002 to close or separate.

[0070] Among them, granular injection molding material is placed inside the storage tank 701. The injection molding material enters the inside of the material changing pipe 8 through the blanking pipe 702. When both reset springs 1602 are in a normal state, the two blocking blocks 1601 respectively block the upper ends of the two docking pipes 905. The two docking pipes 905 are respectively defined as the left docking pipe 905 and the right docking pipe 905. At this time, the end of the bolt 1606 slidably installed on the rectangular block is inserted into the positioning hole opened in the middle position of the abutting rod 1603. When feeding is required, the user can push the abutting rod 1603 inward. When the abutting rod 1603 pushes the blocking block 1601 fixedly connected to it deep into the inside of the material changing pipe 8, under the action of the connecting rod 1604, the two blocking blocks 1601 move synchronously. The blocking block 1601 blocking the upper end of the left docking pipe 905 moves away from the outside of the docking pipe 905, and the other blocking block 1601 blocks the channel through which the material in the material changing pipe 8 can move to the right docking pipe 905. At this time, the end of the bolt 1606 can be inserted into the positioning hole opened at one end of the abutting rod 1603 away from the blocking block 1601 to limit the adjusted position of the two blocking blocks 1601. Then, the material contained in the storage tank 701 can only enter the inside of the left docking pipe 905 through the blanking pipe 702 and the material changing pipe 8, and then the injection molding material is heated by the corresponding extrusion assembly 9 and then injected into the mold cavity formed after the movable mold 1001 and the fixed mold 1002 are clamped. When the injection molding material is formed in the mold cavity, it is the clamping strip assembled at both ends of the inner partition of the refrigerator;

[0071] When the injection molding device needs to replace the injection molding material, after all the injection molding material inside the storage assembly 7 and the material changing pipe 8 enters the inside of the docking pipe 905, the user can pull the end of the abutting rod 1603 to move the two blocking blocks 1601. After the positions of the two blocking blocks 1601 are switched, the upper end of the right docking pipe 905 is in an open state. At this time, the end of the bolt 1606 can be inserted into the positioning hole opened at one end of the abutting rod 1603 close to the blocking block 1601 to limit the adjusted position of the two blocking blocks 1601. Then, the replaced material in the storage tank 701 can enter the inside of the right docking pipe 905 through the blanking pipe 702 and the material changing pipe 8, and then the injection molding material is processed by another set of extrusion assembly 9;

[0072] After switching the positions of the two plugging blocks 1601, the gas transmission pipe 14 internally connected to the charging pipe 8 can continuously pump gas into the interior of the charging pipe 8 through the air pump 12. Rubber pads 1605 are fixedly connected to the ends of the plugging blocks 1601 away from the connecting rod 1604, which can be used to ensure the sealing between the plugging blocks 1601 and the inner wall of the charging pipe 8. When the upper end of the right docking pipe 905 is open and in the feeding state, by inputting gas into the interior of the charging pipe 8 through the gas transmission pipe 14, the gas can be continuously pumped into the interior of the left docking pipe 905 and then into the interior of the extrusion pipe 901. During the process of continuously pumping gas into the interior of the extrusion pipe 901, the air pressure inside the extrusion pipe 901 can push the residual injection molding material inside the extrusion pipe 901 towards the extrusion head 903, and then the injection molding material corresponding to the extrusion assembly 9 is injected into the mold cavity between the movable mold 1001 and the fixed mold 1002 through the extrusion head 903 to form a shape, avoiding waste of the residual injection molding material inside the extrusion pipe 901. After all the injection molding material inside the extrusion pipe 901 is discharged, the user controls the telescopic end of the first electric telescopic rod 6 to expand and contract, thereby changing the position of the adjustment block 13. The adjustment block 13 is fixedly connected to the movable table 15, and the movable table 15 is slidably connected to the upper surface of the processing table 1. Then, the adjustment assembly 16 can drive the movable table 15 to slide. When the movable table 15 slides, the positions of the two extrusion assemblies 9 can be switched. Among them, the ends of the two extrusion heads 903 slide under the action of the guiding assembly 20. When the extrusion head 903 moves to one end of the guiding strip 2001 close to the injection hole 2002, the extrusion head 903 presses against the outer wall of the sensing rod 2003. The extrusion head 903 continues to move and squeezes the inclined sensing rod 2003 to rotate to the horizontal. When the end of the sensing rod 2003 triggers the contact switch 2004, the first electric telescopic rod 6 can stop running synchronously. At this time, the end of the extrusion head 903 is accurately aligned with the injection hole 2002. After the injection molding material passes through heat treatment inside the extrusion pipe 901, it can be injected into the mold cavity between the movable mold 1001 and the fixed mold 1002 through the injection hole 2002 for shaping. After the replaced extrusion head 903 is aligned with the injection hole 2002, new injection molding material can be injected into the interior of the storage tank 701, and then the newly replaced injection molding material is input into the corresponding extrusion assembly 9 through the charging pipe 8 for processing;

[0073] When heating the injection molding material through the extrusion assembly 9, the heat inside the extrusion pipe 901 is blocked by the blocking block 1701, which can prevent the heat in the extrusion pipe 901 from directly contacting the injection molding material in the storage tank 701, thereby affecting the state of the injection molding material in the storage tank 701. Among them, the rotating shaft 1702 is driven to rotate by the servo motor 1703, and the blocking block 1701 fixedly connected to the rotating shaft 1702 can continuously rotate. Grooves are provided on the outer wall of the blocking block 1701, which can continuously convey the injection molding material inside the docking pipe 905 into the interior of the extrusion pipe 901.

[0074] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

[0075] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An injection molding device for injection molded parts inside a refrigerator, comprising a processing table (1), characterized in that, One end outer wall of the processing table (1) is fixedly installed with a control module (3). One end of the upper surface of the processing table (1) is fixedly installed with a hydraulic driving structure (2). In the middle position of the upper surface of the processing table (1), a second fixed table (19) is fixedly installed. A mold (10) is arranged between the hydraulic driving structure (2) and the extrusion assembly (9). On the upper surface of the processing table (1) on the other side of the second fixed table (19), a movable table (15) is slidably installed. An extrusion assembly (9) is fixedly installed on the upper surface of the movable table (15). The number of the extrusion assemblies (9) is two groups, and the two groups of extrusion assemblies (9) are used alternately. A material changing pipe (8) is fixedly connected between one ends of the two groups of extrusion assemblies (9). An adjusting assembly (16) is movably installed inside the material changing pipe (8). A material storage assembly (7) is fixedly installed above the material changing pipe (8). The extrusion assembly (9) specifically includes an extrusion pipe (901) fixedly connected to the upper surface of the movable table (15). A threaded transmission rod (904) is rotatably installed inside the extrusion pipe (901). The end of the extrusion pipe (901) is fixedly installed with an extrusion head (903) used in cooperation with the second fixed table (19). And a heating block (902) is fixedly installed on the outer wall of the extrusion pipe (901). The upper outer wall of the extrusion pipe (901) is fixedly connected with a butt joint pipe (905) below the material changing pipe (8). And the butt joint pipes (905) in the two groups of extrusion assemblies (9) are symmetrically distributed below the material changing pipe (8). The adjusting assembly (16) includes two plugging blocks (1601) slidably installed inside the material changing pipe (8). And the two plugging blocks (1601) are respectively correspondingly distributed with the upper ends of the two butt joint pipes (905). A connecting rod (1604) is fixedly connected between the two plugging blocks (1601). A return spring (1602) is arranged at both ends of the material changing pipe (8). The two ends of the return spring (1602) are respectively fixedly connected with the end of the plugging block (1601) and the inner wall of the end of the material changing pipe (8). And a rubber pad (1605) is fixedly connected to the outer wall of the end of the plugging block (1601) close to the return spring (1602). A resisting rod (1603) is fixedly installed at the center position of the outer wall of the end of one of the plugging blocks (1601) close to the return spring (1602). The other end of the resisting rod (1603) penetrates through the center position of the material changing pipe (8) and is slidably connected with the material changing pipe (8).

2. The injection molding device for injection molded parts inside a refrigerator according to claim 1, characterized in that, Air pumps (12) are arranged at the corresponding positions of the two sides of the outer wall of the processing table (1) and the material changing pipe (8). The output ends of the two air pumps (12) are fixedly connected with air delivery pipes (14). The other ends of the two air delivery pipes (14) are respectively fixedly connected with the outer walls of the two ends of the material changing pipe (8) and are communicated with the inside of the material changing pipe (8).

3. A plastic injection molding device for in - refrigerator injection molded parts according to claim 2, characterized in that, The inside of the docking pipe (905) is provided with a blocking component (17). The blocking component (17) specifically includes a blocking block (1701). The blocking block (1701) is of a spherical structure, and three grooves are equidistantly arranged on the outer wall. A rotating shaft (1702) is fixedly installed at the center position of the blocking block (1701). The two ends of the rotating shaft (1702) are respectively rotatably connected to the inner wall of the docking pipe (905), and a servo motor (1703) is fixedly installed at the corresponding position of the outer wall of the docking pipe (905) and the end of the rotating shaft (1702).

4. A plastic injection molding device for refrigerator internal injection molded parts according to claim 3, characterized in that, The mold (10) specifically includes a movable mold (1001). The movable mold (1001) is fixedly connected to the output end of the hydraulic driving structure (2). The output end of the hydraulic driving structure (2) is fixedly connected with limiting rods (1005) corresponding to the four corners of the movable mold (1001). Through holes for cooperating with the limiting rods (1005) are formed through the second fixed table (19), and the ends of the limiting rods (1005) are slidably connected to the second fixed table (19). A second cooling structure (1004) is movably installed inside the movable mold (1001). A fixed mold (1002) cooperating with the movable mold (1001) is fixedly installed on the outer wall of the second fixed table (19). First cooling structures (1003) are fixedly connected to both sides of the fixed mold (1002).

5. A plastic injection molding device for refrigerator injection molded parts according to claim 4, characterized in that, A protective shell (4) is fixedly installed on the processing table (1) outside the mold (10). A limiting component (18) is fixedly installed at the corresponding position of the inside of the protective shell (4) and the second fixed table (19). The limiting component (18) specifically includes a rectangular plate (1801) fixedly connected to the protective shell (4). A limiting groove (1802) is formed at the lower end of the rectangular plate (1801), and the end of the extrusion head (903) is slidably located inside the limiting groove (1802). A plurality of limiting holes (1803) for cooperating with the limiting rods (1005) are correspondingly formed at the lower end of the rectangular plate (1801).

6. The injection molding device for injection molded parts inside a refrigerator according to claim 5, characterized in that, A guiding component (20) is arranged at the corresponding position of the outer wall of the second fixed table (19) and the limiting groove (1802). The guiding component (20) specifically includes two groups of symmetrically arranged guiding strips (2001) fixedly installed on the outer wall of the second fixed table (19). An injection hole (2002) is formed between the two groups of guiding strips (2001) on the outer wall of the second fixed table (19). Inductive rods (2003) are rotatably installed at one ends of the two groups of guiding strips (2001) close to the injection hole (2002), and the two inductive rods (2003) are centrosymmetrically distributed on the periphery of the injection hole (2002). Contact switches (2004) are fixedly installed at the corresponding positions of the outer wall of the second fixed table (19) and the ends of the two inductive rods (2003).

7. A plastic injection molding device for in - refrigerator injection molded parts according to claim 6, characterized in that, An aggregate trough is provided on the upper surface of the processing table (1) between the movable mold (1001) and the fixed mold (1002), and a movable door (11) is movably installed at a position on the side wall of the processing table (1) corresponding to the aggregate trough; The material storage assembly (7) specifically includes a material storage tank (701), a blanking pipe (702) is fixedly installed at the bottom of the material storage tank (701), the lower end of the blanking pipe (702) is fixedly connected to the outer wall of the upper end of the material changing pipe (8), and the inside of the blanking pipe (702) is communicated with the inside of the material changing pipe (8).

8. A plastic injection molding device for in - refrigerator injection molded parts according to claim 7, characterized in that, An adjusting block (13) is fixedly installed at the end of the movable table (15), a first fixed table (5) is fixedly installed on the outer wall of one end of the processing table (1) corresponding to the adjusting block (13), a rectangular groove matching the adjusting block (13) is provided at the upper end of the first fixed table (5), and the adjusting block (13) is slidably installed in the rectangular groove. A first electric telescopic rod (6) is fixedly installed on the outer wall of one end of the processing table (1), and the output end of the first electric telescopic rod (6) is fixedly connected to the outer wall of one end of the adjusting block (13).

9. The injection molding device for injection molded parts inside a refrigerator according to claim 8, characterized in that, The abutting rod (1603) is arranged inside the return spring (1602). Positioning holes are penetrated through both ends and the middle position of the abutting rod (1603). A rectangular block is fixedly installed at a position on the end of the material changing pipe (8) corresponding to the abutting rod (1603). A plug pin (1606) is slidably installed on the rectangle, and the end of the plug pin (1606) is inserted into one of the positioning holes.

10. A method for forming injection molded parts inside a refrigerator according to claim 9, specifically including the following steps: Step 1, place the granular injection molding material inside the material storage tank (701), and the injection molding material enters the inside of the material changing pipe (8) through the blanking pipe (702); Step 2, when both return springs (1602) are in a normal state, the two plugging blocks (1601) respectively plug the upper ends of the two butt joint pipes (905). Define the two butt joint pipes (905) as the left butt joint pipe (905) and the right butt joint pipe (905). At this time, the end of the plug pin (1606) slidably installed on the rectangular block is inserted into the positioning hole penetrated through the middle position of the abutting rod (1603). Step 3: When feeding is required, the user can push the abutting rod (1603) inward. When the abutting rod (1603) pushes the sealing block (1601) fixedly connected thereto deep into the inside of the material changing pipe (8), under the action of the connecting rod (1604), the two sealing blocks (1601) move synchronously. The sealing block (1601) blocking the upper end of the left docking pipe (905) moves away, and the other sealing block (1601) blocks the channel through which the material in the material changing pipe (8) can move to the right docking pipe (905). At this time, the end of the bolt (1606) can be inserted into the positioning hole opened at one end of the abutting rod (1603) away from the sealing block (1601). At this time, the material contained in the storage tank (701) enters the inside of the left docking pipe (905) through the feeding pipe (702) and the material changing pipe (8), and then after the corresponding extrusion assembly (9) heats the injection molding material, it is injected into the mold cavity formed after the movable mold (1001) and the fixed mold (1002) are clamped. When the injection molding material is formed in the mold cavity, it is the strip for assembling at both ends of the inner partition of the refrigerator; Step 4: When the injection molding device needs to replace the injection molding material, after all the injection molding material inside the storage assembly (7) and the material changing pipe (8) enters the inside of the docking pipe (905), the user can pull the end of the abutting rod (1603) to move the two sealing blocks (1601). After the positions of the two sealing blocks (1601) are switched, the upper end of the right docking pipe (905) is in an open state. At this time, the end of the bolt (1606) can be inserted into the positioning hole opened at one end of the abutting rod (1603) close to the sealing block (1601) to limit the adjusted positions of the two sealing blocks (1601). Then the replaced material in the storage tank (701) can enter the inside of the right docking pipe (905) through the feeding pipe (702) and the material changing pipe (8), and then another set of extrusion assemblies (9) processes the injection molding material; Step 5: After switching the positions of the two sealing blocks (1601), the gas transmission pipe (14) communicating with the inside of the material changing pipe (8) can continuously pump gas into the inside of the material changing pipe (8) through the air pump (12). The gas transmission pipe (14) inputs gas into the inside of the material changing pipe (8), and the gas can be continuously pumped into the inside of the left docking pipe (905), and then enter the inside of the extrusion pipe (901). During the process of continuously pumping gas into the inside of the extrusion pipe (901), the air pressure inside the extrusion pipe (901) can push the residual injection molding material inside the extrusion pipe (901) towards the extrusion head (903); Step Six: When the movable table (15) slides, the positions of the two sets of extrusion components (9) can be switched. Among them, the ends of the two extrusion heads (903) slide under the action of the guiding component (20). When the extrusion head (903) moves to one end of the guiding bar (2001) close to the injection hole (2002), the extrusion head (903) extrudes the outer wall of the induction rod (2003). As the extrusion head (903) continues to move, the inclined induction rod (2003) is extruded and rotated to the horizontal. When the end of the induction rod (2003) triggers the contact switch (2004), the first electric telescopic rod (6) can stop operating synchronously. At this time, the end of the extrusion head (903) is precisely aligned with the injection hole (2002). After the injection material is heat-treated inside the extrusion pipe (901), it can be injected into the cavity between the movable mold (1001) and the fixed mold (1002) through the injection hole (2002) for shaping. After the replaced extrusion head (903) is aligned with the injection hole (2002), new injection material can be injected into the interior of the storage tank (701), and then the replaced new injection material is input into the corresponding extrusion component (9) through the material-changing pipe (8) for processing.

Images