Deep nozzle and mold with same

Abstract

The utility model relates to the technical field of injection molds, in particular to a deep nozzle and a mold with the same, the deep nozzle comprises a circulation part and a heating part, the heating part is sleeved outside the circulation part, the circulation part comprises a nozzle part and a supporting part, and the nozzle part is arranged on the supporting part; the circulation part further comprises a flow channel, and the flow channel is located in the supporting part and the mouth part and sequentially penetrates through the supporting part and the mouth part. The two nozzle parts are symmetrically arranged relative to the geometric center of the supporting part, the flow channel comprises an injection section, a transition section and injection sections which are sequentially communicated, the injection section and the transition section are both located on the supporting part and penetrate through the supporting part, the two injection sections are arranged, and the two injection sections penetrate through the two nozzle parts respectively. The utility model relates to a deep nozzle which is used for replacing a heating device at a sprue bush part of an original mold and belongs to innovative and optimized application of a hot runner production mode.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and more specifically, to a deep-type nozzle and a mold with the nozzle. Background Art

[0002] The existing standard injection molding machines are equipped with short nozzles without heating function. The corresponding molds are cold runners or hot runner molds that require heating devices to be installed at the mold gate sleeve. The mold hot runner needs to be purchased and installed. In addition, the traditional cold runner injection gate recycles more materials, while the traditional hot runner injection gate recycles less materials. However, the hot runner structure has high manufacturing costs and is complex to manufacture. In addition, since the PVC material characteristics are sensitive to temperature requirements, if you are not careful, the material will decompose, carbonize and turn yellow. The material cannot be recycled, and the mold maintenance time is long and difficult. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a deep-type nozzle for replacing the heating device at the original mold gate sleeve position. By installing the deep-type nozzle on the injection molding machine, the purchase and installation of the mold hot runner can be avoided. To realize the original "single-channel mold hot runner" solution, it is only necessary to open a hole in the gate sleeve position corresponding to the mold to complete the transformation of the matching mold, which is an innovative and optimized application of the hot runner production mode.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] Provided is a deep-type nozzle, comprising a circulation portion and a heating portion, wherein the heating portion is sleeved outside the circulation portion, the circulation portion comprises a mouth portion and a support portion, and the mouth portion is mounted on the support portion; the circulation portion further comprises a flow channel, wherein the flow channel is located inside the support portion and the mouth portion and sequentially penetrates the support portion and the mouth portion; the number of the mouth portions is two, and the two mouth portions are symmetrically arranged about the geometric center of the support portion; the flow channel comprises an injection section, a transition section, and an injection section that are sequentially connected, the injection section and the transition section are both located in the support portion and penetrate the support portion, the injection section comprises two sections, and the two injection sections respectively penetrate the two mouth portions.

[0006] The deep-type nozzle of the utility model has a heating part, which is used to provide a heating function so that the circulation part can heat evenly. The circulation part is used to make the molten injection material flow out of the mold. The heating part can be connected to the temperature control system of the injection molding machine itself to ensure that the material stored in this section of the circulation part remains in a molten state under the control of the set temperature. The circulation part can directly pass through the injection molding machine shooting hole, penetrate into the mold cavity, and replace the original mold gate sleeve function, so that the injection molding produces less gate recycling material and low manufacturing cost. The standard PVC nozzle has no heating device, the nozzle is short, and the mold used in the production needs to be equipped with a gate hot runner to inject the raw materials into the mold cavity. Therefore, the standard PVC nozzle will generate a lot of water gate waste during the production process, thereby increasing the processing cost. For the promotion of hot runner production in the current market, although the effect of reducing the water gate can be achieved, the mold manufacturing cost is high, and each set of molds needs to add a hot runner structure, which is also a common practice in the current market. And it is impossible to achieve the effect of energy saving and emission reduction and cost reduction. An extended nozzle has also appeared in the prior art to improve the above-mentioned problem, but the existing extended nozzle has no heating function and can only be applied to non-PVC materials, but not to PVC materials, because the characteristics of PVC materials have relatively high temperature requirements and are prone to carbonization and yellowing. The front end temperature of an ordinary extended nozzle is low, and the PVC material has solidified, so it cannot be used. The deep-type nozzle of the utility model adds a heating part outside the circulation part, which is connected to the heating system of the injection molding machine, and can effectively control the nozzle temperature, so that the PVC material will not be carbonized and yellowed in the nozzle, and only needs to install the deep-type nozzle in the injection molding machine to replace the structure that requires the hot runner to be installed in each set of molds, thereby greatly saving the mold processing cost.

[0007] Preferably, the circulation part is a Y-shaped structure. The Y-shaped circulation part can penetrate into the cavity, thereby reducing carbonization and yellowing of the PVC material in the nozzle.

[0008] Preferably, the nozzle is a growth-type structure, and the length of the nozzle is at least 200 mm. The growth-type structure is relative to the structure of an ordinary short nozzle. The utility model lengthens the nozzle so that the nozzle can penetrate into the cavity, while the traditional nozzle is short, and the mold used in production needs to be equipped with a gate hot runner to inject the raw materials into the mold cavity. Within the scope of knowledge of those skilled in the art, the length of the nozzle can be set accordingly as needed.

[0009] Preferably, the support part includes a detachably connected front support part and a rear support part, the nozzle is mounted on the front support part, the injection section is located on the rear support part, the transition section is a C-shaped structure, and the transition section is partially located on the front support part and partially located between the front support part and the rear support part. The nozzle is mounted and fixed by the front support part and the rear support part, and the injection section is connected with the injection section to facilitate the passage of the molten injection material.

[0010] Preferably, a spiral groove is provided on the outside of the mouth, and the heating part is a heating tube, which is installed in the spiral groove. The setting of the spiral groove provides installation space for the heating part, which can facilitate the installation of the heating part. The heating tube is used for generating heat, and the spirally arranged heating tube enables the mouth to be evenly heated.

[0011] Preferably, it also includes a plurality of temperature sensors, which are respectively arranged at the front end and the rear end of the nozzle. The temperature sensors are used to detect the temperature and are connected to the temperature control system of the injection molding machine itself to ensure that the material stored in the nozzle section remains in a molten state under the set temperature control.

[0012] The utility model also provides a mold, comprising a front mold and a rear mold arranged relatively to each other, and also comprising an ejection mechanism, a deep-type nozzle as described above, wherein the deep-type nozzle is inserted into the front mold, and the ejection mechanism is installed in the rear mold and is arranged deep into the front mold. The cavity is arranged in the front mold, and the deep-type nozzle directly penetrates into the cavity of the front mold for injection molding. After the injection molding is completed, the ejection mechanism is used to eject the product from the cavity.

[0013] Preferably, the front mold includes a front mold core, a front mold frame, and a front mold bottom plate which are arranged in sequence, and the deep-type nozzle is arranged through the front mold bottom plate, the front mold frame, and the front mold core in sequence.

[0014] Preferably, the rear mold includes a rear mold core, a rear mold frame, and a rear mold bottom plate which are arranged in sequence, and the ejection mechanism is arranged through the rear mold bottom plate, the rear mold frame, and the rear mold core in sequence.

[0015] Preferably, the ejection mechanism comprises an ejector pin and a spring, one end of the spring is mounted on the rear mold bottom plate, and the other end is connected to one end of the ejector pin, and the other end of the ejector pin is disposed deep into the front mold core.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The deep-type nozzle has a heating part that heats evenly, and connects the heating part to the temperature control system of the injection molding machine itself, ensuring that the material stored in the circulation part remains in a molten state under the set temperature control. The nozzle can directly pass through the injection molding machine's shooting hole, penetrate into the mold cavity, and replace the original mold gate sleeve function, so that the injection molding produces less gate recycling material and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a deep-type nozzle in the first direction of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a deep-type nozzle in the second direction of the utility model;

[0020] Figure 3 for Figure 2 AA cross-sectional view after removing the heating part;

[0021] Figure 4 The utility model is a structural schematic diagram of a mold.

[0022] The illustrations are as follows:

[0023] 1. Circulation part; 11. Mouth part; 12. Support part; 121. Front support part; 122. Rear support part; 13. Flow channel; 131. Injection section; 132. Transition section; 133. Injection section; 2. Heating part; 101. Front mold; 1011. Front mold core; 1012. Front mold frame; 1013. Front mold bottom plate; 102. Rear mold; 1021. Rear mold core; 1022. Rear mold frame; 1023. Rear mold bottom plate; 103. Deep-type nozzle; 104. Ejection mechanism; 1041. Ejector pin; 1042. Spring. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0025] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Example 1

[0027] like Figures 1 to 3The figure shows a first embodiment of a deep-type nozzle of the utility model, comprising a circulation portion 1 and a heating portion 2, wherein the heating portion 2 is sleeved outside the circulation portion 1, the circulation portion 1 comprises a nozzle 11 and a support portion 12, wherein the nozzle 11 is mounted on the support portion 12; the circulation portion 1 also comprises a flow channel 13, wherein the flow channel 13 is located inside the support portion 12 and the nozzle 11 and sequentially penetrates the support portion 12 and the nozzle 11; there are two nozzles 11, which are symmetrically arranged about the geometric center of the support portion 12, the flow channel 13 comprises an injection section 131, a transition section 132, and an injection section 133 which are sequentially connected, wherein the injection section 131 and the transition section 132 are both located in the support portion 12 and penetrate the support portion 12, and the injection section 133 comprises two sections, wherein the two injection sections 133 are respectively penetrated through the two nozzles 11.

[0028] The circulation part 1 is provided with a nozzle 11, a support part 12 and a flow channel 13, so that the molten injection material can flow from the mold through the circulation part 1 into the cavity; by providing two nozzles 11, a double nozzle structure is formed, which is beneficial to improving the injection efficiency; the flow channel 13 is divided into sections, each of which has a different function, the injection section 131 is used to connect to the pouring port of the mold, the injection section 133 is used to connect to the product cavity, and the transition section 132 is used to connect the injection section 131 and the injection section 133.

[0029] The deep-type nozzle 103 of the utility model is provided with a heating part 2, which is used to provide a heating function so that the circulation part 1 can be heated evenly, and the circulation part 1 is used to make the injection molding material flow out of the mold. The heating part 2 can be connected to the temperature control system of the injection molding machine itself to ensure that the material stored in this section of the circulation part 1 is kept in a molten state under the control of the set temperature. The circulation part 1 can directly pass through the injection molding machine shooting hole, penetrate into the mold cavity, and replace the original mold gate sleeve function, so that the injection molding produces less gate recycling material and low manufacturing cost. The standard PVC nozzle has no heating device, the nozzle is short, and the mold used in the production needs to be equipped with a gate hot runner 13 to inject the raw materials into the mold cavity. Therefore, the standard PVC nozzle will generate a lot of water gate waste during the production process, thereby increasing the processing cost. For the promotion of hot runner production in the current market, although the effect of reducing the water gate can be achieved, the mold manufacturing cost is high, and each set of molds needs to be added with a hot runner structure, which is also a common practice in the current market. And it is impossible to achieve the effect of energy saving and emission reduction and cost reduction. An extended nozzle has also appeared in the prior art to improve the above-mentioned problem, but the existing extended nozzle has no heating function and can only be applied to non-PVC materials, but not to PVC materials, because the characteristics of PVC materials have relatively high temperature requirements and are prone to carbonization and yellowing. The temperature at the front end of an ordinary extended nozzle is low, and the PVC material has solidified, so it cannot be used. The deep-type nozzle 103 of the utility model adds a heating part 2 outside the circulation part 1, which is connected to the heating system of the injection molding machine, and can effectively control the nozzle temperature, so that the PVC material will not be carbonized and yellowed in the nozzle, and only the deep-type nozzle 103 needs to be installed in the injection molding machine to replace the structure of installing the hot runner 13 in each set of molds, thereby greatly saving the mold processing cost.

[0030] As an embodiment of the present invention, the nozzle 11 is a growth-type structure, and the length of the nozzle 11 is at least 200 mm. The growth-type structure is relative to the structure of an ordinary short nozzle. The present invention lengthens the nozzle 11 so that the nozzle can penetrate into the cavity. The traditional nozzle is short, and the mold used in the production needs to be equipped with a gate hot runner 13 to inject the raw materials into the mold cavity. Within the scope of knowledge of those skilled in the art, the length of the nozzle 11 can be set accordingly as needed.

[0031] As an embodiment of the present invention, the support portion 12 includes a detachably connected front support portion 121 and a rear support portion 122, the nozzle 11 is mounted on the front support portion 121, the injection section 131 is located at the rear support portion 122, the transition section 132 is a C-shaped structure, and the transition section 132 is partially located at the front support portion 121, and partially located between the front support portion 121 and the rear support portion 122. The nozzle 11 is mounted and fixed by the front support portion 121 and the rear support portion 122, and the injection section 131 is connected to the injection section 133 to facilitate the passage of the molten injection material.

[0032] As an embodiment of the present invention, a spiral groove is provided on the outside of the mouth 11, and the heating part 2 is a heating tube, which is installed in the spiral groove. The setting of the spiral groove provides installation space for the heating part 2, which can facilitate the installation of the heating part 2. The heating tube is used for heating, and the spirally arranged heating tube enables the mouth 11 to be evenly heated.

[0033] As an embodiment of the present invention, several temperature sensors are also included, and the temperature sensors are respectively arranged at the front end and the rear end of the nozzle 11. The temperature sensors are used to detect the temperature and are connected to the temperature control system of the injection molding machine itself to ensure that the material stored in the nozzle 11 is kept in a molten state under the set temperature control.

[0034] The deep-type nozzle 103 of the utility model is made of SDR61, the rubber surface needs to be chrome-plated, the whole needs to be quenched and hardened to 52-55HRC, a spiral groove is turned on the outside of the nozzle 11 to fix the heating tube to keep the nozzle temperature balanced, temperature sensors for measuring temperature are arranged at the front and rear ends of the nozzle, and the heating system of the injection molding machine is connected to effectively control the nozzle temperature so that the PVC material will not be carbonized and yellowed in the nozzle, and only the deep-type nozzle 103 needs to be installed in the injection molding machine to replace the hot runner 13 installed in each set of molds, thereby greatly saving the mold processing cost.

[0035] Example 2

[0036] The following is a second embodiment of a deep-drilling nozzle of the utility model. This embodiment is similar to the first embodiment, except that the flow portion 1 is a Y-shaped structure.

[0037] The flow portion 1 of the Y-shaped structure can penetrate into the cavity, thereby reducing carbonization and yellowing of the PVC material in the nozzle.

[0038] Example 3

[0039] like Figure 4The figure shows an embodiment of a mold of the utility model, which includes a front mold 101 and a rear mold 102 arranged opposite to each other, and also includes an ejection mechanism 104, and a deep-type nozzle 103 as described above. The deep-type nozzle 103 is inserted into the front mold 101, and the ejection mechanism 104 is installed in the rear mold 102 and is deeply arranged in the front mold 101. The cavity is set in the front mold 101, and the deep-type nozzle 103 directly penetrates into the cavity of the front mold 101 for injection molding. After the injection molding is completed, the ejection mechanism 104 is used to eject the product from the cavity.

[0040] As an embodiment of the present invention, the front mold 101 includes a front mold core 1011, a front mold frame 1012, and a front mold bottom plate 1013, which are sequentially arranged. The deep-type nozzle 103 sequentially penetrates the front mold bottom plate 1013, the front mold frame 1012, and the front mold core 1011. The front mold frame 1012 is used to install and support the front mold core 1011. The front mold bottom plate 1013 is arranged at the front end of the front mold 101, and the front mold bottom plate 1013 is connected to the front mold frame 1012 and the front mold core 1011 by screws.

[0041] As an embodiment of the present invention, the rear mold 102 includes a rear mold core 1021, a rear mold frame 1022, and a rear mold bottom plate 1023, which are sequentially arranged, and the ejection mechanism 104 sequentially penetrates the rear mold bottom plate 1023, the rear mold frame 1022, and the rear mold core 1021. The rear mold frame 1022 is used for the installation and support of the rear mold core 1021, the rear mold bottom plate 1023 is arranged at the rearmost end of the rear mold 102, and the ejection mechanism 104 is arranged on the rear mold frame 1022 and extends into the rear mold core 1021.

[0042] As an embodiment of the present invention, the ejection mechanism 104 includes an ejector pin 1041 and a spring 1042. One end of the spring 1042 is mounted on the rear mold bottom plate 1023, and the other end is connected to one end of the ejector pin 1041. The other end of the ejector pin 1041 is deeply set in the front mold core 1011. The ejector pin 1041 ejects the product from the mold cavity and is reset by the spring 1042.

[0043] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A deep-type nozzle, characterized in that: The invention comprises a circulation part (1) and a heating part (2), wherein the heating part (2) is sleeved outside the circulation part (1), and the circulation part (1) comprises a nozzle (11) and a support part (12), wherein the nozzle (11) is mounted on the support part (12); the circulation part (1) also comprises a flow channel (13), wherein the flow channel (13) is located inside the support part (12) and the nozzle (11) and penetrates the support part (12) and the nozzle (11) in sequence; the nozzle (11) comprises two The two nozzles (11) are symmetrically arranged about the geometric center of the support portion (12); the flow channel (13) comprises an injection section (131), a transition section (132), and an injection section (133) which are connected in sequence; the injection section (131) and the transition section (132) are both located in the support portion (12) and are arranged to penetrate the support portion (12); the injection section (133) is divided into two sections, and the two injection sections (133) are arranged to penetrate the two nozzles (11) respectively.

2. The deep-drilling nozzle according to claim 1, characterized in that: The circulation part (1) is a Y-shaped structure.

3. The deep-drilling nozzle according to claim 1, characterized in that: The mouth (11) is a growth-type structure, and the length of the mouth (11) is at least 200 mm.

4. The deep-dip nozzle according to claim 3, characterized in that: The support portion (12) comprises a front support portion (121) and a rear support portion (122) which are detachably connected, the nozzle (11) is mounted on the front support portion (121), the injection section (131) is located on the rear support portion (122), the transition section (132) is a C-shaped structure, and part of the transition section (132) is located on the front support portion (121) and part of it is located between the front support portion (121) and the rear support portion (122).

5. The deep-drilling nozzle according to claim 4, characterized in that: A spiral groove is provided on the outer side of the mouth (11); the heating part (2) is a heating tube; and the heating part (2) is installed in the spiral groove.

6. The deep-dip nozzle according to claim 1, characterized in that: It also includes a plurality of temperature sensors, which are respectively arranged at the front end and the rear end of the mouth (11).

7. A mold, characterized in that: It comprises a front mold (101) and a rear mold (102) arranged opposite to each other, and also comprises an ejection mechanism (104) and a deep-dip nozzle (103) according to any one of claims 1 to 6, wherein the deep-dip nozzle (103) is inserted into the front mold (101), and the ejection mechanism (104) is installed on the rear mold (102) and is arranged deep into the front mold (101).

8. The mold according to claim 7, characterized in that: The front mold (101) comprises a front mold core (1011), a front mold frame (1012), and a front mold bottom plate (1013) which are arranged in sequence, and the deep-drilling nozzle (103) is arranged to penetrate the front mold bottom plate (1013), the front mold frame (1012), and the front mold core (1011) in sequence.

9. The mold according to claim 8, characterized in that: The rear mold (102) comprises a rear mold core (1021), a rear mold frame (1022), and a rear mold bottom plate (1023) which are arranged in sequence, and the ejection mechanism (104) is arranged to penetrate the rear mold bottom plate (1023), the rear mold frame (1022), and the rear mold core (1021) in sequence.

10. The mold according to claim 9, characterized in that: The ejection mechanism (104) comprises an ejector pin (1041) and a spring (1042); one end of the spring (1042) is mounted on the rear mold bottom plate (1023), and the other end is connected to one end of the ejector pin (1041); the other end of the ejector pin (1041) is disposed deep into the front mold core (1011).

Images