Two-color bottle injection molding device and blow molding method

Abstract

The present application discloses a two-color bottle body injection molding device and a blow molding method. The two-color bottle body injection molding device comprises a device base, an injection mold, a glue injection shooting platform, an injection flow channel mechanism, and a rotating material guiding mechanism; the glue injection shooting platform comprises a side shooting platform and a main shooting platform; the injection flow channel mechanism comprises a flow channel mechanism body, a side injection flow channel, and a main injection flow channel; the rotating material guiding mechanism comprises a rotating valve needle assembly and a rotating cylinder; injection glue materials of different colors are injected into the injection mold through the injection flow channel mechanism and the rotating material guiding mechanism via the side shooting platform and the main shooting platform; the blow molding efficiency of the two-color bottle body is improved and the production needs are met; the two-color bottle body blow molding method, injects the first raw glue and the second raw glue into the injection mold, inflates and shapes the bottle embryo, and then moves to the removal station; completes the one-time molding steps of injection molding, blow molding, and removal of two different glue materials, realizes two-color blow molding, improves the two-color bottle body blow molding efficiency, and saves equipment costs.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding equipment, and in particular to a two-color bottle injection molding device and a blow molding method. Background Art

[0002] In the injection molding industry, two-color bottle blow molding is a molding technology used to produce bottles with two different colors. However, the traditional two-color bottle blow molding method usually requires two moldings or requires the inner layer material and the outer layer material to be injection molded separately, and then the embryo is heated and blow molded through blow molding and the blow mold to complete the molding of the two-color blow molded product. This method requires two moldings to complete the blow molding, which is inefficient, increases production time and cost, and cannot meet the needs of modern production. Summary of the invention

[0003] In order to improve the defects of the existing two-color bottle blow molding that requires two moldings to complete the blow molding, which not only has low blow molding efficiency but also increases costs, the present application provides a two-color bottle injection molding device and a blow molding method.

[0004] The present application provides a two-color bottle body injection molding device and a blow molding method using the following technical solutions:

[0005] A two-color bottle body injection molding device, comprising a device base, an injection mold arranged on the device base, a glue injection shooting platform, an injection runner mechanism arranged between the glue injection shooting platform and the injection mold and connected to the glue injection shooting platform, and a rotating material guide mechanism arranged between the injection runner mechanism and the injection mold and used to connect the injection runner mechanism and the injection mold;

[0006] The injection molding platform includes a side injection platform and a main injection platform; the injection flow channel mechanism includes a flow channel mechanism body, a side injection flow channel that penetrates the flow channel mechanism body and is used to connect the side injection platform and the rotating material guide mechanism, and a main injection flow channel that penetrates the flow channel mechanism body and is used to connect the main injection platform and the rotating material guide mechanism; the rotating material guide mechanism includes a rotary valve needle assembly and a rotary cylinder for driving the rotary valve needle assembly to rotate;

[0007] When the rotary cylinder drives the rotary valve needle assembly to rotate to the side jet channel, one side of the rotary valve needle assembly is connected to the side jet channel and the injection mold, and the other side of the rotary valve needle assembly blocks the main jet channel;

[0008] When the rotary cylinder drives the rotary valve needle assembly to rotate to the position of the main jet channel, one side of the rotary valve needle assembly is connected to the main jet channel and the injection mold, and the other side of the rotary valve needle assembly blocks the side jet channel.

[0009] By adopting the above technical scheme, different colors of injection rubber materials are injected into the injection mold through the side shooting platform and the main shooting platform through the injection flow channel mechanism and the rotating material guide mechanism; and the rotary cylinder drives the rotary valve needle assembly to rotate to the side injection flow channel position, so that one side of the rotary valve needle assembly is connected to the side injection flow channel and the injection mold, and the other side of the rotary valve needle assembly blocks the main injection flow channel; or the rotary cylinder drives the rotary valve needle assembly to rotate to the main injection flow channel position, so that one side of the rotary valve needle assembly is connected to the main injection flow channel and the injection mold, and the other side of the rotary valve needle assembly blocks the side injection flow channel; so that different colors of injection rubber materials can enter the injection mold in turn and be formed at one time, thereby improving the efficiency of two-color bottle blow molding, reducing production time and cost, and meeting the needs of modern production.

[0010] Preferably, the rotary material guiding mechanism further comprises a sealing cylinder and a flow-dividing glue injection base arranged on the device base; one end of the rotary valve needle assembly is connected to the output end of the sealing cylinder, and the other end of the rotary valve needle assembly passes through the rotary cylinder and the flow channel mechanism body, and is inserted into the flow-dividing glue injection base;

[0011] The diverter injection base is used to connect the main jet channel, the side jet channel, and the injection mold respectively; the sealing cylinder is used to drive the rotary valve needle assembly to insert or withdraw from the injection mold to seal or connect the diverter injection base and the injection mold.

[0012] By adopting the above technical scheme, when the sealing cylinder drives the rotary valve needle assembly to be inserted into the injection mold, the rotary valve needle assembly blocks the connection between the diverter injection base and the injection mold; when the sealing cylinder drives the rotary valve needle assembly to be pulled out of the injection mold, the rotary valve needle assembly keeps the diverter injection base and the injection mold connected; this facilitates the operations of injection and sealing, and improves the efficiency of injection and sealing.

[0013] Preferably, the split-flow glue injection base includes a glue injection base body, a main glue injection hole that penetrates the glue injection base body and is used to connect to the injection mold, a side glue injection hole that is used to connect the side jet channel and the main glue injection hole, and a main glue injection hole that is used to connect the main jet channel and the main glue injection hole;

[0014] The rotary valve needle assembly is inserted into the main injection hole, the main injection hole and the main injection hole cooperate to connect the main shooting platform and the injection mold, and the side injection hole and the main injection hole cooperate to connect the side shooting platform and the injection mold.

[0015] By adopting the above technical scheme, when the side shooting platform is respectively connected with the side shooting channel, the side injection hole, the total injection hole, and the injection mold, the side shooting platform outputs the first raw glue and introduces it into the injection mold; when the main shooting platform is respectively connected with the main shooting channel, the main injection hole, the total injection hole, and the injection mold, the main shooting platform outputs the second raw glue and introduces it into the injection mold; so as to complete the injection of the first raw glue and the second raw glue of two colors of injection glue into the injection mold, and the injection mold is hot-pressed and cooled to make a two-color bottle embryo.

[0016] Preferably, the rotary valve needle assembly comprises a rotary valve needle body, a valve needle material guide groove provided on the rotary valve needle body, and a material guide seal sleeved on the outside of the rotary valve needle body and located between the diverter injection base and the rotary valve needle body;

[0017] When the rotary valve needle body rotates and connects the valve needle guide groove to the main injection hole and the injection mold, the rotary valve needle body blocks the side injection hole relative to the other side of the valve needle guide groove;

[0018] When the rotary valve needle body rotates and connects the valve needle guide groove to the side injection hole and the injection mold, the rotary valve needle body blocks the main injection hole relative to the other side of the valve needle guide groove.

[0019] By adopting the above technical scheme, the material guide seal is inserted in the main injection hole and is used to separate the main injection hole and the side injection hole to prevent the two colors of injection glue from mixing in the main injection hole and affecting the injection effect; the valve needle material guide groove is used to connect the side injection hole and the injection mold glue inlet, or to connect the main injection hole and the injection mold glue inlet, so that the first raw glue or the second raw glue enters the injection mold; the structure is simple, the operation is convenient, and the efficiency of two-color injection is improved.

[0020] Preferably, the material guide seal includes a seal body, a sealing ridge provided on the seal body and used to be inserted into the diversion glue injection base, a side glue guide groove provided on the seal body and used to connect the injection mold and the side glue injection hole, a main glue groove provided on the seal body and used to connect the injection mold and the main glue injection hole, and a sealing glue hole that passes through the seal body and is used for the rotary valve needle body to be movably inserted.

[0021] By adopting the above technical scheme, the sealing convex edge is used to be inserted into the diverter injection base to improve the sealing performance of the total injection hole, and when the rotary valve needle body rotates, the stability between the material guide seal and the diverter injection base is also improved to prevent the friction force of the rotation of the rotary valve needle body from driving the material guide seal to rotate, thereby causing the problem of mixing of two-color injection glue; when the valve needle material guide groove and the side glue guide groove and the side injection hole are connected, the side shooting platform injects glue into the injection mold; when the valve needle material guide groove and the main glue groove and the main injection hole are connected, the main shooting platform injects glue into the injection mold; it is convenient to guide the injected glue when injecting glue into the injection mold, and improves the sealing performance during injection.

[0022] Preferably, the injection runner mechanism further comprises a heating groove arranged on the side wall of the runner mechanism body, and a heating component inserted into the heating groove.

[0023] By adopting the above technical solution, the heating component is inserted into the heating groove and used to heat the flow channel mechanism body, so that the injection glue in the side injection channel and the main injection channel remains in a fluid state, preventing the injection glue from solidifying due to temperature drop and affecting the injection molding effect.

[0024] Preferably, the injection molding runner mechanism further comprises a constant temperature shell sleeved on the outside of the runner mechanism body, and a constant temperature water pipe inserted into the constant temperature shell and sleeved on the periphery of the runner mechanism body.

[0025] By adopting the above technical solution, the constant temperature water pipe is used to take away part of the heat of the heating component, so that the flow channel mechanism body maintains a constant temperature, preventing the electronic components of the blow molding device from being damaged due to excessive temperature. It is also used to keep the injection molding glue in a fixed viscosity range, preventing the molding effect of the two-color bottle from being affected by the unstable viscosity of the injection molding glue.

[0026] A two-color bottle blow molding method includes the two-color bottle injection molding device, and further includes the following steps:

[0027] S1: the rotary valve needle assembly moves away from the injection mold to connect the injection mold with the side jet flow channel;

[0028] S2: the side-shooting station injects a first raw material glue into the injection mold;

[0029] S3: The rotary cylinder drives the rotary valve needle assembly to rotate 180°, so that the injection mold is connected to the main jet channel;

[0030] S4: the main injection station injects the second raw material glue into the injection mold;

[0031] S5: the rotary valve needle assembly moves toward the injection mold so that the rotary valve needle assembly is inserted into the injection port of the injection mold to block the connection between the injection mold and the side jet channel and the main jet channel respectively;

[0032] S6: moving the preform formed by the injection mold to a blow molding station to inflate and shape the preform;

[0033] S7: Move the blow-molded two-color bottle body at the blow-molding station to the unloading station for unloading.

[0034] By adopting the above technical scheme, the rotary valve needle assembly is driven to rotate by the rotary cylinder so that the injection mold is connected to the side jet channel or the main jet channel respectively, and then the first raw glue and the second raw glue are injected into the injection mold in sequence, and then the two-color bottle embryo molded in the injection mold is moved to the blow molding station, the bottle embryo is inflated and shaped, and then the blow-molded two-color bottle body on the blow molding station is moved to the removal station for unloading; the one-time molding steps of injection molding, blow molding and removal of two different glues are completed. This scheme realizes the switching of two glues at the glue inlet of an injection mold, thereby realizing two-color blow molding, improving the blow molding efficiency of two-color bottle bodies, saving equipment costs, and meeting production needs.

[0035] Preferably, step S2 further comprises the following steps:

[0036] S201: Control the injection time of the glue material through the timing controller, the injection time of the first raw glue material is the first preset injection time T1, T1=1.5s;

[0037] S202: When the first raw material glue is fed in and delayed for 1 second;

[0038] S203: The timing controller sends a signal to trigger the rotating cylinder to perform step S3.

[0039] By adopting the above technical solution, the injection time of the glue is controlled by the timing controller to control the injection amount. When the injection reaches the preset time, the timing controller is used to trigger the rotary cylinder to drive the rotary valve needle assembly to rotate, so as to switch the side shooting platform or the main shooting platform for glue injection; the accuracy of the injection amount is improved, and the injection efficiency and precision are improved.

[0040] Preferably, step S6 further comprises the following steps:

[0041] S601: When the preform is injection molded in the injection mold, the injection mold is opened, and the preform that has completed the double-color injection molding is inserted into the blow mold;

[0042] S602: closing the blow mold;

[0043] S603: Blowing gas into the bottle preform to blow-mold the bottle preform;

[0044] S604: After the preform is blown, it is cooled for 12 seconds until the bottle body is formed;

[0045] S605: Open the blow mold;

[0046] S606: Take out the finalized two-color bottle body.

[0047] By adopting the above technical scheme, the two-color injection-molded bottle embryo is inserted into the blow molding mold, and then the blow molding mold is closed, and the bottle embryo is blow-molded by high-pressure blowing. After the blow molding is completed, the mold is opened, and the shaped bottle body is rotated to the removal station and unloaded to carry out the next process; the degree of automation is high, and injection molding and blow molding can be integrated, which is easy to operate and improves the efficiency of injection molding.

[0048] In summary, the present application includes at least one of the following beneficial technical effects:

[0049] 1. A two-color bottle injection molding device, which injects different colors of injection rubber materials into the injection mold through the injection flow channel mechanism and the rotating material guide mechanism through the side shooting platform and the main shooting platform; and drives the rotary valve needle assembly to rotate to the side jet flow channel position through the rotary cylinder, so that one side of the rotary valve needle assembly is connected to the side jet flow channel and the injection mold, and the other side of the rotary valve needle assembly blocks the main jet flow channel; or the rotary cylinder drives the rotary valve needle assembly to rotate to the main jet flow channel position, so that one side of the rotary valve needle assembly is connected to the main jet flow channel and the injection mold, and the other side of the rotary valve needle assembly blocks the side jet flow channel; so that different colors of injection rubber materials are sequentially entered into the injection mold and formed at one time, thereby improving the efficiency of two-color bottle blow molding, reducing production time and cost, and meeting the needs of modern production;

[0050] 2. A two-color bottle body injection molding device, wherein the sealing convex edge is used to be inserted into the diverter injection base to improve the sealing performance in the total injection hole, and when the rotary valve needle body rotates, the stability between the material guide seal and the diverter injection base is also improved to prevent the friction force of the rotating valve needle body from driving the material guide seal to rotate, thereby causing the problem of mixing of the two-color injection glue; when the valve needle material guide groove and the side glue guide groove and the side injection hole are connected, the side shooting platform injects glue into the injection mold; when the valve needle material guide groove and the main glue groove and the main injection hole are connected, the main shooting platform injects glue into the injection mold; it is convenient to guide the injection glue when injecting glue into the injection mold, and improves the sealing performance during injection;

[0051] 3. A two-color bottle blow molding method, which drives the rotary valve needle assembly to rotate by a rotary cylinder to connect the injection mold to the side jet channel or the main jet channel respectively, and then injects the first raw glue and the second raw glue into the injection mold in turn, and then moves the two-color bottle embryo molded in the injection mold to the blow molding station, inflates and shapes the bottle embryo, and then moves the blow-molded two-color bottle on the blow molding station to the removal station for unloading; completes the one-time molding steps of injection molding, blow molding, and removal of two different glues. This solution realizes the switching of two glues at the glue inlet of an injection mold, thereby realizing two-color blow molding, improving the efficiency of two-color bottle blow molding, saving equipment costs, and meeting production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic cross-sectional view of an embodiment of a two-color bottle injection molding device of the present application.

[0053] Figure 2 for Figure 1 Enlarged view of part A.

[0054] Figure 3 It is a schematic diagram of the exploded sectional structure of the injection runner mechanism and the rotary material guiding mechanism of the embodiment of the two-color bottle injection molding device of the present application.

[0055] Figure 4 It is a schematic cross-sectional structure diagram of a split-flow glue injection base of an embodiment of a two-color bottle body injection molding device of the present application.

[0056] Figure 5 It is a schematic diagram of the exploded structure of the rotary valve needle assembly of the double-color bottle injection molding device embodiment of the present application.

[0057] Figure 6 It is a schematic cross-sectional structure diagram of a material guide seal of an embodiment of a two-color bottle injection molding device of the present application.

[0058] Figure 7 It is a schematic diagram of the exploded structure of the injection runner mechanism and the rotating material guiding mechanism of the embodiment of the two-color bottle injection molding device of the present application.

[0059] Figure 8 This is a schematic cross-sectional view of the flow channel mechanism body of the embodiment of the two-color bottle injection molding device of the present application. Figure 1 .

[0060] Fig. 9 This is a schematic cross-sectional view of the flow channel mechanism body of the embodiment of the two-color bottle injection molding device of the present application. Figure 2 .

[0061] Fig.10 It is a flow chart of the steps of an embodiment of the double-color bottle blow molding method of the present application.

[0062] Fig.11It is a three-dimensional structural schematic diagram of an embodiment of a two-color bottle injection molding device of the present application.

[0063] Description of reference numerals:

[0064] 1. Installation base;

[0065] 2. Injection mold;

[0066] 3. Glue injection platform; 31. Side injection platform; 32. Main injection platform;

[0067] 4. Injection runner mechanism; 41. Runner mechanism body; 42. Side jet runner; 43. Main jet runner; 44. Heating tank; 45. Heating component; 46. Constant temperature shell; 47. Constant temperature water pipe; 421. Side jet runner body; 422. Side jet branch runner; 431. Main jet runner body; 432. Main jet branch runner;

[0068] 5. Rotating material guide mechanism; 51. Rotating valve needle assembly; 52. Rotating cylinder; 53. Sealing cylinder; 54. Diverter injection base; 511. Rotating valve needle body; 512. Valve needle material guide groove; 513. Material guide seal; 541. Glue injection base body; 542. Main glue injection hole; 543. Side glue injection hole; 544. Main glue injection hole; 545. Fixed groove; 5131. Seal body; 5132. Sealing ridge; 5133. Side glue guide groove; 5134. Main glue groove; 5135. Sealing hole. DETAILED DESCRIPTION

[0069] The following is combined with Figure 1-11 This application is described in further detail.

[0070] The present application embodiment discloses a two-color bottle injection molding device. Figure 1 and Figure 2 The two-color bottle body blow molding device comprises a device base 1, an injection mold 2 arranged on the device base 1, a glue injection platform 3, an injection flow channel mechanism 4 arranged between the glue injection platform 3 and the injection mold 2 and connected to the glue injection platform 3, and a rotating material guide mechanism 5 arranged between the injection flow channel mechanism 4 and the injection mold 2 and used to connect the injection flow channel mechanism 4 and the injection mold 2;

[0071] The injection molding station 3 includes a side injection station 31 and a main injection station 32; the injection molding flow channel mechanism 4 includes a flow channel mechanism body 41, a side injection flow channel 42 that penetrates the flow channel mechanism body 41 and is used to connect the side injection station 31 and the rotating material guiding mechanism 5, and a main injection flow channel 43 that penetrates the flow channel mechanism body 41 and is used to connect the main injection station 32 and the rotating material guiding mechanism 5; the rotating material guiding mechanism 5 includes a rotating valve needle assembly 51 and a rotating cylinder 52 for driving the rotating valve needle assembly 51 to rotate;

[0072] When the rotary cylinder 52 drives the rotary valve needle assembly 51 to rotate to the position of the side jet channel 42, one side of the rotary valve needle assembly 51 is connected to the side jet channel 42 and the injection mold 2, and the other side of the rotary valve needle assembly 51 blocks the main jet channel 43;

[0073] When the rotary cylinder 52 drives the rotary valve needle assembly 51 to rotate to the position of the main jet channel 43 , one side of the rotary valve needle assembly 51 connects the main jet channel 43 and the injection mold 2 and the other side of the rotary valve needle assembly 51 blocks the side jet channel 42 .

[0074] In the present application, different colors of injection molding materials are injected into the injection mold 2 through the injection flow channel mechanism 4 and the rotating material guide mechanism 5 by the side shooting platform 31 and the main shooting platform 32; and the rotary valve needle assembly 51 is driven by the rotary cylinder 52 to rotate to the side injection flow channel 42 position, so that one side of the rotary valve needle assembly 51 is connected to the side injection flow channel 42 and the injection mold 2 and the other side of the rotary valve needle assembly 51 blocks the main injection flow channel 43; or the rotary cylinder 52 drives the rotary valve needle assembly 51 to rotate to the main injection flow channel 43 position, so that one side of the rotary valve needle assembly 51 is connected to the main injection flow channel 43 and the injection mold 2 and the other side of the rotary valve needle assembly 51 blocks the side injection flow channel 42; so that different colors of injection molding materials can be sequentially entered into the injection mold 2 and formed at one time, thereby improving the efficiency of double-color bottle blow molding, reducing production time and cost, and meeting the needs of modern production.

[0075] Furthermore, if Figure 2 and Figure 3 As shown, the rotary material guide mechanism 5 also includes a sealing cylinder 53 and a flow-dividing glue injection base 54 arranged on the device base 1; one end of the rotary valve needle assembly 51 is connected to the output end of the sealing cylinder 53, and the other end of the rotary valve needle assembly 51 passes through the rotary cylinder 52 and the flow channel mechanism body 41, and is inserted into the flow-dividing glue injection base 54;

[0076] The diverter injection base 54 is used to connect the main jet channel 43, the side jet channel 42, and the injection mold 2 respectively; the sealing cylinder 53 is used to drive the rotary valve needle assembly 51 to insert or withdraw from the injection mold 2 to seal or connect the diverter injection base 54 and the injection mold 2.

[0077] The lower end of the rotary valve needle assembly 51 of the present application is hinged to the output end of the sealing cylinder 53. When the sealing cylinder 53 drives the rotary valve needle assembly 51 to be inserted into the injection mold 2, the rotary valve needle assembly 51 blocks the connection between the diverter injection base 54 and the injection mold 2; when the sealing cylinder 53 drives the rotary valve needle assembly 51 to be pulled out of the injection mold 2, the rotary valve needle assembly 51 keeps the diverter injection base 54 and the injection mold 2 connected; this facilitates the operations of injection and sealing, and improves the efficiency of injection and sealing.

[0078] Furthermore, if Figure 3and Figure 4 As shown, the flow-dividing glue injection base 54 includes a glue injection base body 541, a main glue injection hole 542 that penetrates the glue injection base body 541 and is used to connect to the injection mold 2, a side glue injection hole 543 that is used to connect the side jet channel 42 and the main glue injection hole 542, and a main glue injection hole 544 that is used to connect the main jet channel 43 and the main glue injection hole 542;

[0079] The rotary valve needle assembly 51 is inserted into the main injection hole 542 . The main injection hole 544 and the main injection hole 542 cooperate to connect the main shooting platform 32 and the injection mold 2 . The side injection hole 543 and the main injection hole 542 cooperate to connect the side shooting platform 31 and the injection mold 2 .

[0080] In the present application, when the side shooting platform 31 is respectively connected with the side shooting channel 42, the side injection hole 543, the total injection hole 542, and the injection mold 2, the side shooting platform 31 outputs the first raw glue and introduces it into the injection mold 2; when the main shooting platform 32 is respectively connected with the main shooting channel 43, the main injection hole 544, the total injection hole 542, and the injection mold 2, the main shooting platform 32 outputs the second raw glue and introduces it into the injection mold 2; so as to complete the injection of the first raw glue and the second raw glue of two colors of injection glue into the injection mold 2, and the injection mold 2 is hot-pressed and cooled to produce a two-color bottle embryo.

[0081] Specifically, Figure 3 and Figure 5 As shown, the rotary valve needle assembly 51 includes a rotary valve needle body 511, a valve needle material guide groove 512 provided on the rotary valve needle body 511, and a material guide seal 513 sleeved on the outer side of the rotary valve needle body 511 and located between the flow-dividing glue injection base 54 and the rotary valve needle body 511;

[0082] When the rotary valve needle body 511 rotates and the valve needle guide groove 512 communicates with the main injection hole 544 and the injection mold 2, the rotary valve needle body 511 blocks the side injection hole 543 relative to the other side of the valve needle guide groove 512;

[0083] When the rotary valve needle body 511 rotates and connects the valve needle guide groove 512 to the side injection hole 543 and the injection mold 2 , the rotary valve needle body 511 blocks the main injection hole 544 relative to the other side of the valve needle guide groove 512 .

[0084] The material guide seal 513 of the present application is inserted into the main injection hole 542 and is used to separate the main injection hole 544 and the side injection hole 543 to prevent the two colors of injection glue from mixing in the main injection hole 542 and affecting the injection effect; when the end of the rotating valve needle body 511 is pulled outward from the injection port of the injection mold 2, the valve needle material guide groove 512 is connected to the side injection hole 543 and the injection port of the injection mold 2, so that the other side of the rotating valve needle body 511 relative to the valve needle material guide groove 512 keeps the main injection hole 544 and the injection mold 2 blocked. 2 glue inlets are provided to allow the first raw glue in the side shooting platform 31 to enter the injection mold 2; when the rotating valve needle body 511 drives the valve needle guide groove 512 to rotate and connects the valve needle guide groove 512 to the main glue injection hole 544 and the glue inlet of the injection mold 2, the other side of the rotating valve needle body 511 relative to the valve needle guide groove 512 keeps blocking the side glue injection hole 543 and the glue inlet of the injection mold 2, so that the second raw glue in the main shooting platform 32 can enter the injection mold 2; the structure is simple, the operation is convenient, and the efficiency of two-color glue injection is improved.

[0085] More specifically, if Figure 5 and Figure 6 As shown, the material guide seal 513 includes a seal body 5131, a sealing ridge 5132 arranged on the seal body 5131 and used to be inserted into the diversion injection base 54, a side glue guide groove 5133 arranged on the seal body 5131 and used to connect the injection mold 2 and the side injection hole 543, a main glue groove 5134 arranged on the seal body 5131 and used to connect the injection mold 2 and the main injection hole 544, and a sealing glue hole 5135 that penetrates the seal body 5131 and is used for the rotary valve needle body 511 to be movably inserted.

[0086] The sealing ridge 5132 of the present application is used to be inserted into the diverter injection base 54 to improve the sealing performance in the total injection hole 542, and when the rotary valve needle body 511 rotates, it also improves the stability between the material guide seal 513 and the diverter injection base 54, and prevents the friction force caused by the rotation of the rotary valve needle body 511 from driving the material guide seal 513 to rotate, thereby causing the problem of mixing of two-color injection glue; when the valve needle material guide groove 512 and the side glue guide groove 5133 and the side glue injection hole 543 are connected, the side shooting platform 31 injects glue into the injection mold 2; when the valve needle material guide groove 512 and the main glue groove 5134 and the main glue injection hole 544 are connected, the main shooting platform 32 injects glue into the injection mold 2; it is convenient to guide the injection glue when injecting glue into the injection mold 2, and improves the sealing performance during injection.

[0087] like Figure 4 As shown, the flow-dividing glue injection base 54 also includes a fixing groove 545 arranged on the inner wall of the main glue injection hole 542 , and the fixing groove 545 is used for the sealing flange 5132 to be inserted to improve the stability and sealing of the connection between the material guiding seal 513 and the flow-dividing glue injection base 54 .

[0088] In addition, if Figure 7 As shown, the injection runner mechanism 4 further includes a heating groove 44 disposed on the side wall of the runner mechanism body 41 , and a heating component 45 inserted into the heating groove 44 .

[0089] The heating component 45 of the present application is inserted into the heating groove 44 and is used to heat the flow channel mechanism body 41, so as to keep the injection molding glue in the side jet flow channel 42 and the main jet flow channel 43 in a fluid state, and prevent the injection molding glue from solidifying due to temperature reduction, thereby affecting the injection molding effect; the heating component 45 is preferably a heating copper wire electrically connected to the outside.

[0090] And, if Figure 7 As shown, the injection molding runner mechanism 4 further includes a constant temperature shell 46 sleeved on the outside of the runner mechanism body 41 , and a constant temperature water pipe 47 inserted into the constant temperature shell 46 and sleeved on the periphery of the runner mechanism body 41 .

[0091] The constant temperature water pipe 47 of the present application has circulating constant temperature water. The constant temperature water pipe 47 is used to take away part of the heat of the heating component 45, so that the flow channel mechanism body 41 maintains a constant temperature, and prevents the electronic components of the blow molding device from being damaged due to excessive temperature. It is also used to keep the injection molding glue in a fixed viscosity range to prevent the molding effect of the two-color bottle body from being affected by the unstable viscosity of the injection molding glue; the constant temperature water pipe 47 is preferably connected to an external water pump for circulating the warm water in the constant temperature water pipe 47.

[0092] like Figure 8 and Fig. 9 As shown, the present application further discloses that the side jet flow channel 42 includes a side jet flow channel body 421 and a side jet flow channel 422 connected to the side jet flow channel body 421; the side jet flow channel 422 is used to flow the injection plastic in the side jet flow channel body 421, and the two ends of the side jet flow channel 422 are respectively connected to the two rotating material guide mechanisms 5;

[0093] The main jet channel 43 includes a main jet channel body 431 and a main jet branch channel 432 connected to the main jet channel body 431; the main jet branch channel 432 is used to divert the injection glue in the main jet channel body 431, and the two ends of the main jet branch channel 432 are respectively connected to the two rotating material guide mechanisms 5, and cooperate with the side jet branch channel 422 to form two two-color bottle embryos by injection molding in the injection mold 2; the structure is simple, and the injection molding efficiency of the two-color bottle embryos is improved.

[0094] like Fig.10 As shown, the present application also discloses a two-color bottle blow molding method, including a two-color bottle injection molding device, and further comprising the following steps:

[0095] S1: Rotate the valve needle assembly 51 to move away from the injection mold 2 so that the injection mold 2 and the side injection channel 42 are connected;

[0096] S2: the side-shooting station 31 injects the first raw material glue into the injection mold 2;

[0097] S3: The rotary cylinder 52 drives the rotary valve needle assembly 51 to rotate 180°, so that the injection mold 2 and the main jet channel 43 are connected;

[0098] S4: the main injection station 32 injects the second raw material glue into the injection mold 2;

[0099] S5: the rotary valve needle assembly 51 is moved toward the injection mold 2 so that the rotary valve needle assembly 51 is inserted into the injection port of the injection mold 2 to block the connection between the injection mold 2 and the side jet channel 42 and the main jet channel 43;

[0100] S6: moving the preform molded by the injection mold 2 to the blow molding station to inflate and shape the preform;

[0101] S7: Move the blow-molded two-color bottle body at the blow-molding station to the unloading station for unloading.

[0102] The present application drives the rotary valve needle assembly 51 to rotate by the rotating cylinder 52, so that the injection mold 2 is connected to the side injection channel 42 or the main injection channel 43 respectively, and then the first raw glue and the second raw glue are injected into the injection mold 2 in sequence, and then the two-color bottle embryo molded in the injection mold 2 is moved to the blow molding station, the bottle embryo is inflated and shaped, and then the two-color bottle body blow-molded on the blow molding station is moved to the removal station for unloading; the one-time molding steps of injection molding, blow molding and removal of two different glues are completed. This solution realizes the switching of two glues at the glue inlet of an injection mold 2, thereby realizing two-color blow molding, improving the efficiency of two-color bottle body blow molding, saving equipment costs, and meeting production needs.

[0103] In step S1 of the present application, the sealing cylinder 53 drives the rotary valve needle body 511 to move away from the injection mold 2, so that the valve needle material guide groove 512 is connected to the injection mold 2 and the side injection hole 543, and the side injection platform 31 injects the first raw material.

[0104] Furthermore, step S2 further includes the following steps:

[0105] S201: Control the injection time of the glue material through the timing controller, the injection time of the first raw glue material is the first preset injection time T1, T1=1.5s;

[0106] S202: When the first raw material glue is fed in and delayed for 1 second;

[0107] S203: The timing controller sends a signal to trigger the rotating cylinder 52 to proceed to step S3.

[0108] Step S3 of this application also includes the following steps:

[0109] S301: The timing controller sends a signal to trigger the rotary cylinder 52 to drive the rotary valve needle body 511 to rotate 180°.

[0110] Step S4 also includes the following steps:

[0111] S401: The second raw material glue feeding time is the second preset glue feeding time T2, 5s<T2<7s.

[0112] The present application also discloses a timing controller electrically connected to the rotating cylinder 52 and the sealing cylinder 53 respectively. The timing controller controls the injection time of the glue material to control the injection amount. When the injection reaches the preset time, the timing controller is used to trigger the rotating cylinder 52 to drive the rotating valve needle assembly 51 to rotate to switch the side shooting platform 31 or the main shooting platform 32 for glue injection; or trigger the sealing cylinder 53 to drive the rotating valve needle assembly 51 to move up and down to perform sealing or injection; thereby improving the accuracy of the injection amount, and improving the injection efficiency and precision.

[0113] The present application controls the injection time of the glue through a timing controller to control the amount of the second raw material glue. When the injection time of the second raw material reaches the second injection time T2, the timing controller sends a signal to trigger the sealing cylinder 53 to drive the rotating valve needle body 511 to move towards the injection mold 2, so that the rotating valve needle body 511 is inserted into the injection port of the injection mold 2 to block the connection between the main injection hole 542 and the injection mold 2.

[0114] Furthermore, step S6 further includes the following steps:

[0115] S601: When the preform is injected into the injection mold 2, the injection mold 2 is opened, and the preform after the double-color injection is inserted into the blow mold;

[0116] S602: closing the blow mold;

[0117] S603: Blowing gas into the bottle preform to blow-mold the bottle preform;

[0118] S604: After the preform is blown, it is cooled for 12 seconds until the bottle body is formed;

[0119] S605: Open the blow mold;

[0120] S606: Take out the finalized two-color bottle body.

[0121] When the injection mold 2 of the present application is opened, the blow molding machine turntable rotates 120°, the two-color injection molded bottle embryo is rotated to the top of the blow molding mold, and the two-color bottle embryo is inserted into the blow molding mold through the cylinder; then the blow molding mold is closed, and the bottle embryo is blow-molded by high-pressure blowing; after the blow molding is completed, the mold is opened, and the blow molding machine turntable rotates 120° to rotate the shaped bottle body to the removal station, and the robot takes out the blow-molded product for the next process; the degree of automation is high, the operation is convenient, and the injection molding efficiency is improved.

[0122] The present application can be applied to the injection molding of bottle products with two or more colors by increasing the discharge position on the rotary valve needle assembly 51 and adjusting the rotation angle of the rotary valve needle assembly 51 to meet different multi-color production requirements.

[0123] The implementation principle of a two-color bottle injection molding device in the embodiment of the present application is as follows: different colors of injection molding materials are injected into the injection mold 2 through the injection flow channel mechanism 4 and the rotating material guide mechanism 5 by the side shooting platform 31 and the main shooting platform 32; and the rotary valve needle assembly 51 is driven by the rotary cylinder 52 to rotate to the position of the side injection flow channel 42, so that one side of the rotary valve needle assembly 51 is connected to the side injection flow channel 42 and the injection mold 2 and the other side of the rotary valve needle assembly 51 blocks the main injection flow channel 43; or the rotary cylinder 52 drives the rotary valve needle assembly 51 to rotate to the position of the main injection flow channel 43, so that one side of the rotary valve needle assembly 51 is connected to the main injection flow channel 43 and the injection mold 2 and the other side of the rotary valve needle assembly 51 blocks the side injection flow channel 42; so that different colors of injection molding materials are sequentially entered into the injection mold 2 and formed at one time, thereby improving the efficiency of two-color bottle blow molding, reducing production time and cost, and meeting the needs of modern production;

[0124] A two-color bottle blow molding method, which drives a rotary valve needle assembly 51 to rotate by a rotary cylinder 52, so that the injection mold 2 is connected to the side jet channel 42 or the main jet channel 43 respectively, and then the first raw glue and the second raw glue are injected into the injection mold 2 in sequence, and then the two-color bottle embryo injection-molded in the injection mold 2 is moved to the blow molding station, the bottle embryo is inflated and shaped, and then the blow-molded two-color bottle body on the blow molding station is moved to the removal station for unloading; the one-time molding steps of injection molding, blow molding and removal of two different glue materials are completed. This scheme realizes the switching of two glue materials at the glue inlet of an injection mold 2, thereby realizing two-color blow molding, improving the two-color bottle blow molding efficiency, saving equipment costs, and meeting production needs.

[0125] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A two-color bottle injection molding device, characterized in that: The device comprises a device base (1), an injection mold (2) arranged on the device base (1), an injection molding platform (3), an injection molding flow channel mechanism (4) arranged between the injection molding platform (3) and the injection mold (2) and connected to the injection molding platform (3), and a rotating material guide mechanism (5) arranged between the injection molding flow channel mechanism (4) and the injection mold (2) and used to connect the injection molding flow channel mechanism (4) and the injection mold (2); The injection molding platform (3) comprises a side injection platform (31) and a main injection platform (32); the injection molding flow channel mechanism (4) comprises a flow channel mechanism body (41), a side injection flow channel (42) penetrating the flow channel mechanism body (41) and used to connect the side injection platform (31) and the rotating material guiding mechanism (5), and a main injection flow channel (43) penetrating the flow channel mechanism body (41) and used to connect the main injection platform (32) and the rotating material guiding mechanism (5); the rotating material guiding mechanism (5) comprises a rotary valve needle assembly (51) and a rotary cylinder (52) used to drive the rotary valve needle assembly (51) to rotate; When the rotary cylinder (52) drives the rotary valve needle assembly (51) to rotate to the position of the side jet channel (42), one side of the rotary valve needle assembly (51) is connected to the side jet channel (42) and the injection mold (2), and the other side of the rotary valve needle assembly (51) blocks the main jet channel (43); When the rotary cylinder (52) drives the rotary valve needle assembly (51) to rotate to the position of the main jet channel (43), one side of the rotary valve needle assembly (51) connects the main jet channel (43) and the injection mold (2) and the other side of the rotary valve needle assembly (51) blocks the side jet channel (42).

2. A two-color bottle injection molding device according to claim 1, characterized in that: The rotary material guiding mechanism (5) further comprises a sealing cylinder (53) and a flow-dividing glue injection base (54) arranged on the device base (1); one end of the rotary valve needle assembly (51) is connected to the output end of the sealing cylinder (53), and the other end of the rotary valve needle assembly (51) passes through the rotary cylinder (52) and the flow channel mechanism body (41), and is inserted into the flow-dividing glue injection base (54); The flow-dividing glue injection base (54) is used to respectively connect the main jet channel (43), the side jet channel (42), and the injection mold (2); the sealing cylinder (53) is used to drive the rotary valve needle assembly (51) to insert or withdraw from the injection mold (2) to seal or connect the flow-dividing glue injection base (54) and the injection mold (2).

3. A two-color bottle injection molding device according to claim 2, characterized in that: The flow-dividing glue injection base (54) comprises a glue injection base body (541), a main glue injection hole (542) penetrating the glue injection base body (541) and used for connecting to the injection mold (2), a side glue injection hole (543) used for connecting the side jet channel (42) and the main glue injection hole (542), and a main glue injection hole (544) used for connecting the main jet channel (43) and the main glue injection hole (542); The rotary valve needle assembly (51) is inserted into the main injection hole (542); the main injection hole (544) and the main injection hole (542) cooperate to connect the main shooting platform (32) and the injection mold (2); the side injection hole (543) and the main injection hole (542) cooperate to connect the side shooting platform (31) and the injection mold (2).

4. A two-color bottle injection molding device according to claim 3, characterized in that: The rotary valve needle assembly (51) comprises a rotary valve needle body (511), a valve needle material guide groove (512) provided on the rotary valve needle body (511), and a material guide seal (513) sleeved on the outside of the rotary valve needle body (511) and located between the diverter injection base (54) and the rotary valve needle body (511); When the rotary valve needle body (511) rotates and makes the valve needle guide groove (512) communicate with the main injection hole (544) and the injection mold (2), the rotary valve needle body (511) blocks the side injection hole (543) relative to the other side of the valve needle guide groove (512); When the rotary valve needle body (511) rotates and connects the valve needle guide groove (512) to the side injection hole (543) and the injection mold (2), the rotary valve needle body (511) blocks the main injection hole (544) relative to the other side of the valve needle guide groove (512).

5. A two-color bottle injection molding device according to claim 4, characterized in that: The material guiding seal (513) comprises a sealing body (5131), a sealing ridge (5132) provided on the sealing body (5131) and used to be inserted into the diverter injection base (54), a side glue guiding groove (5133) provided on the sealing body (5131) and used to connect the injection mold (2) and the side glue injection hole (543), a main glue groove (5134) provided on the sealing body (5131) and used to connect the injection mold (2) and the main glue injection hole (544), and a sealing glue hole (5135) that runs through the sealing body (5131) and is used for the rotary valve needle body (511) to be movably inserted.

6. A two-color bottle injection molding device according to claim 1, characterized in that: The injection molding runner mechanism (4) further comprises a heating groove (44) arranged on the side wall of the runner mechanism body (41), and a heating component (45) inserted into the heating groove (44).

7. A two-color bottle injection molding device according to claim 1, characterized in that: The injection molding runner mechanism (4) further comprises a constant temperature shell (46) sleeved on the outside of the runner mechanism body (41), and a constant temperature water pipe (47) inserted into the constant temperature shell (46) and sleeved on the periphery of the runner mechanism body (41).

8. A two-color bottle blow molding method, characterized in that: The double-color bottle body injection molding device according to any one of claims 1 to 7 further comprises the following steps: S1: the rotary valve needle assembly (51) moves in a direction away from the injection mold (2) so that the injection mold (2) and the side jet flow channel (42) are in communication; S2: the side-shooting station (31) injects a first raw material glue into the injection mold (2); S3: the rotary cylinder (52) drives the rotary valve needle assembly (51) to rotate 180°, so that the injection mold (2) and the main jet channel (43) are connected; S4: the main injection station (32) injects a second raw material glue into the injection mold (2); S5: the rotary valve needle assembly (51) moves in a direction close to the injection mold (2), so that the rotary valve needle assembly (51) is inserted into the injection port of the injection mold (2), so as to block the connection between the injection mold (2) and the side jet channel (42) and the main jet channel (43); S6: moving the preform formed by injection molding of the injection mold (2) to a blow molding station to inflate and shape the preform; S7: Move the blow-molded two-color bottle body at the blow-molding station to the unloading station for unloading.

9. A two-color bottle blow molding method according to claim 8, characterized in that: Step S2 also includes the following steps: S201: Control the injection time of the glue material through the timing controller, the injection time of the first raw glue material is the first preset injection time T1, T1=1.5s; S202: When the first raw material glue is fed in and delayed for 1 second; S203: The timing controller sends a signal to trigger the rotating cylinder (52) to proceed to step S3.

10. A two-color bottle blow molding method according to claim 8, characterized in that: Step S6 also includes the following steps: S601: When the preform is injection molded in the injection mold (2), the injection mold (2) is opened, and the preform that has completed the double-color injection molding is inserted into the blow mold; S602: closing the blow mold; S603: Blowing gas into the bottle preform to blow-mold the bottle preform; S604: After the preform is blown, it is cooled for 12 seconds until the bottle body is formed; S605: Open the blow mold; S606: Take out the finalized two-color bottle body.

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