Nozzle device
By installing an insulation sleeve and a heat insulation cavity on the outside of the nozzle head, the problem of heat loss from the nozzle head is solved, which improves the yield of injection molded products and the reliability of equipment, and reduces production costs and scrap rate.
Patent Information
- Application Number
- CN202520104238.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-15
AI Technical Summary
The nozzle head loses a lot of heat during the injection molding process, which leads to a decrease in the yield of injection molded products, increases the scrap rate and production costs, and affects production efficiency.
An insulating sleeve is fitted over the outside of the nozzle head, and heat insulation cavities are set on the inside and outside of the insulating sleeve to reduce direct contact between the nozzle head and the mold core. The heat insulation cavities prevent heat conduction, and the temperature control components keep the insulating sleeve within the preset temperature range.
It effectively reduces heat loss from the nozzle head, improves the yield of injection molded products, reduces scrap rate and production costs, and increases production efficiency.
Smart Images
Figure CN223820989U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a nozzle device. Background Technology
[0002] The nozzle device of the injection molding equipment includes a nozzle head and a temperature control component fitted outside the nozzle head. The temperature control component detects the real-time temperature of the nozzle head and heats the nozzle head so that the temperature near the nozzle head reaches the optimal temperature for injection molding.
[0003] In related technologies, the nozzle head comes into direct contact with the mold core during injection molding, causing the temperature of the nozzle head to be conducted to the mold core. This results in significant heat loss from the nozzle head, preventing it from providing insulation. Consequently, the yield of injection molded products decreases, greatly reducing the reliability of injection molding equipment, increasing scrap rate and production costs, and severely impacting production efficiency. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a nozzle device that aims to solve the problem of severe heat loss from the nozzle head in related technologies.
[0005] To solve the above-mentioned technical problems, this utility model provides a nozzle device for injecting raw materials into the gate of the mold core, the nozzle device comprising:
[0006] The main body is equipped with a first flow channel;
[0007] A nozzle head, connected to one end of the body and having a second flow channel communicating with the first flow channel, is used to inject the raw material into the gate through the second flow channel. A gap exists between the nozzle head and the inner wall of the gate.
[0008] A heat insulation sleeve is connected to the body and sleeved on the outside of the nozzle head. The inner side of the heat insulation sleeve contacts the outer side of the nozzle head, and the outer side contacts the inner wall of the gate. The heat insulation sleeve has a heat insulation cavity located between its inner and outer sides.
[0009] Optionally, the heat insulation cavity is annular, the nozzle head is located inside the heat insulation cavity, and the length of the heat insulation cavity extends along the length direction of the second flow channel.
[0010] Optionally, the insulation sleeve includes:
[0011] A first outer sleeve, connected to the body and fitted over the outside of the nozzle head; and,
[0012] The second jacket is connected to the first jacket and worn over the outside of the first jacket;
[0013] The inner side of the first jacket is in contact with the nozzle head, the outer side of the second jacket is in contact with the inner wall of the gate, and the heat insulation cavity is provided between the first jacket and the second jacket.
[0014] Optionally, the heat insulation cavity is provided on the inner side of the second outer jacket.
[0015] Optionally, the second outer cover includes:
[0016] A connecting portion, connected to and fitted over the outer side of the first outer jacket, wherein the heat insulation cavity is provided on the inner side of the connecting portion; and,
[0017] An abutment portion is connected to the outside of the connecting portion, and the length extension direction of the abutment portion forms an angle with the length extension direction of the connecting portion. The abutment portion is used to contact the inner wall of the gate.
[0018] Optionally, the outer side of the second jacket is provided with concave and convex features, and the protruding portion of the second jacket is used to contact the inner wall of the gate.
[0019] Optionally, the insulation sleeve includes:
[0020] A first outer sleeve, connected to the body and fitted over the outside of the nozzle head, wherein the first outer sleeve has at least a partial gap with the nozzle head; and,
[0021] The second jacket is connected to the first jacket and located in the gap between the first jacket and the nozzle head;
[0022] The inner side of the first jacket contacts the nozzle head, the outer side of the first jacket contacts the inner wall of the gate, and the heat insulation cavity is provided between the first jacket and the second jacket.
[0023] Optionally, the inner side of the first outer jacket is provided with a first protrusion, and the first protrusion abuts against the outer side of the second outer jacket;
[0024] The outer side of the second outer jacket is provided with a second protrusion, which abuts against the inner side of the first outer jacket. The first protrusion, the first outer jacket, the second protrusion, and the second outer jacket together enclose the heat insulation cavity.
[0025] Optionally, the nozzle device further includes a temperature control component, the temperature control component comprising:
[0026] A heating element is disposed on the outside of the insulation sleeve; and,
[0027] A temperature detector is located on the outside of the insulation sleeve.
[0028] Optionally, the insulation sleeve and the body are screwed together, and one of the insulation sleeve and the body is provided with an internal thread and the other is provided with an external thread.
[0029] Compared with related technologies, the nozzle device of this utility model has the following advantages: by covering the outside of the nozzle head with a heat insulation sleeve, direct contact between the nozzle head and the mold core can be avoided, reducing the heat conducted from the nozzle head to the mold core; moreover, the inner and outer sides of the heat insulation sleeve are separated by a heat insulation cavity, which can reduce the heat conducted from the inner side of the heat insulation sleeve to the outer side, thereby further reducing the heat conducted from the nozzle head to the mold core, reducing the heat loss of the nozzle head, and thus playing a heat insulation role for the nozzle head, which increases the yield of injection molded products, greatly improves the reliability of injection molding equipment, reduces scrap rate and production costs, and improves production efficiency. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a cross-sectional view of the nozzle device in the first example of this utility model;
[0032] Figure 2 yes Figure 1 Enlarged view of detail A in the middle;
[0033] Figure 3 yes Figure 1 Exploded view of the middle section of the structure;
[0034] Figure 4 This is a cross-sectional view of the nozzle device in the second example of this utility model;
[0035] Figure 5 yes Figure 4 A magnified view of detail B in the middle;
[0036] Figure 6 yes Figure 4 Exploded view of the middle section of the structure;
[0037] Figure 7 This is a cross-sectional view of the nozzle device in the third example of this utility model;
[0038] Figure 8 yes Figure 7 Enlarged view of detail C in the middle;
[0039] Figure 9 yes Figure 7Exploded view of the middle section of the structure;
[0040] Figure 10 This is a cross-sectional view of the nozzle device in the fourth example of this utility model;
[0041] Figure 11 yes Figure 10 Enlarged view of detail D;
[0042] Figure 12 yes Figure 10 Exploded view of the middle section of the structure.
[0043] In the accompanying drawings, the reference numerals represent: 1. Body; 11. First flow channel; 2. Nozzle head; 21. Second flow channel; 3. Insulation sleeve; 31. First outer sleeve; 311. First protrusion; 32. Second outer sleeve; 321. Connecting part; 322. Abutting part; 323. Second protrusion; 33. Heat insulation cavity; 4. Temperature control component; 41. Heating element; 42. Temperature detector; 5. Valve core; 6. Mold core; 61. Gate. Detailed Implementation
[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.
[0047] Example:
[0048] Please see Figures 1 to 12 This utility model provides a nozzle device for injecting raw material into the gate 61 of the mold core 6. The nozzle device includes a body 1, a nozzle head 2, and a heat insulation sleeve 3. The body 1 is provided with a first flow channel 11; the nozzle head 2 is connected to one end of the body 1 and is provided with a second flow channel 21 communicating with the first flow channel 11. The nozzle head 2 is used to inject raw material into the gate 61 through the second flow channel 21, and there is a gap between the nozzle head 2 and the inner wall of the gate 61; the heat insulation sleeve 3 is connected to the body 1 and sleeved on the outside of the nozzle head 2. The inner side of the heat insulation sleeve 3 contacts the outer side of the nozzle head 2, and the outer side contacts the inner wall of the gate 61. The heat insulation sleeve 3 is provided with a heat insulation cavity 33 located between its inner side and outer side.
[0049] By covering the nozzle head 2 with an insulation sleeve 3, direct contact between the nozzle head 2 and the mold core 6 can be avoided, reducing the heat conducted from the nozzle head 2 to the mold core 6. Moreover, the inner and outer sides of the insulation sleeve 3 are separated by a heat insulation cavity 33, which can reduce the heat conducted from the inner side of the insulation sleeve 3 to the outer side, thereby further reducing the heat conducted from the nozzle head 2 to the mold core 6 and reducing the heat loss of the nozzle head 2. This provides insulation for the nozzle head 2, increases the yield of injection molded products, greatly improves the reliability of injection molding equipment, reduces scrap rate and production costs, and improves production efficiency.
[0050] It should be noted that the inner side of the insulation sleeve 3 is in direct contact with the nozzle head 2, and the outer side of the insulation sleeve 3 is in contact with the inner side of the gate 61. Thus, during the injection molding process, the inner side of the insulation sleeve 3 comes into contact with the raw material flowing in the second runner 21, and the outer side of the insulation sleeve 3 comes into contact with the relatively non-flowing raw material in the gate 61, thereby reducing the heat loss of the nozzle head 2.
[0051] Please see Figure 2 , Figure 5 , Figure 7 and Figure 11The heat insulation cavity 33 is annular, which helps to separate the inner and outer sides of the insulation sleeve 3, thereby preventing heat from being conducted from the inner side of the insulation sleeve 3 to the outer side. The nozzle head 2 is located inside the heat insulation cavity 33, and the length of the heat insulation cavity 33 extends along the length direction of the second flow channel 21, which allows the size of the heat insulation cavity 33 to be as large as possible, thereby reducing the heat transfer path between the inner and outer sides of the insulation sleeve 3 and improving the heat insulation effect of the heat insulation cavity 33.
[0052] It should be noted that in some embodiments, the heat insulation cavity 33 can be strip-shaped or block-shaped, and one or more heat insulation cavities 33 can be provided. The heat insulation cavity 33 can be an air cavity or a vacuum cavity, and the heat insulation cavity 33 can be filled with a material with poor thermal conductivity.
[0053] Please see Figures 1 to 6 In some embodiments, the insulation sleeve 3 includes a first outer sleeve 31 and a second outer sleeve 32. The first outer sleeve 31 is connected to the body 1 and sleeved on the outside of the nozzle head 2; wherein, the inner side of the first outer sleeve 31 contacts the nozzle head 2, and both the inner side of the first outer sleeve 31 and the outer side of the nozzle head 2 are provided with stepped structures to facilitate the overlapping and mating of the first outer sleeve 31 and the nozzle head 2. The second outer sleeve 32 is connected to the first outer sleeve 31 and sleeved on the outside of the first outer sleeve 31, wherein the first outer sleeve 31 and the second outer sleeve 32 can be threaded together, and the outer side of the second outer sleeve 32 contacts the inner wall of the gate 61, thereby sealing the gate 61, and a heat insulation cavity 33 is provided between the first outer sleeve 31 and the second outer sleeve 32.
[0054] It should be noted that both the first jacket 31 and the second jacket 32 are made of materials with poor thermal conductivity. The inner side of the first jacket 31 only partially contacts the outer side of the nozzle head 2, reducing the contact area between the nozzle head 2 and the first jacket 31, thereby reducing the heat conducted from the nozzle head 2 to the first jacket 31. The outer side of the second jacket 32 only partially contacts the inner wall of the gate 61, reducing the contact area between the second jacket 32 and the mold core 6, thereby reducing the heat conducted from the second jacket 32 to the mold core 6.
[0055] In this embodiment of the utility model, the heat insulation cavity 33 can be disposed inside the first outer jacket 31, or inside the second outer jacket 32, or can be formed by the first outer jacket 31 and the second outer jacket 32 enclosing each other.
[0056] In some embodiments, the inner side of the second outer jacket 32 is provided with a heat insulation cavity 33, for example:
[0057] Please see Figure 1 , Figure 2 and Figure 3In the first example, the second jacket 32 includes a connecting portion 321 and an abutting portion 322. The connecting portion 321 is connected to the first jacket 31 and sleeved on the outside of the first jacket 31, wherein a heat insulation cavity 33 is provided on the inner side of the connecting portion 321. The abutting portion 322 is connected to the outside of the connecting portion 321, and there is an angle between the length extension direction of the abutting portion 322 and the length extension direction of the connecting portion 321. The abutting portion 322 is used to contact the inner wall of the gate 61, wherein the abutting portion 322 may be annular, and the end of the abutting portion 322 away from the connecting portion 321 is in sealing contact with the inner wall of the gate 61.
[0058] Please see Figure 4 , Figure 5 and Figure 6 In the second example, the outer side of the second jacket 32 is provided with concave and convex features, and the protruding part of the second jacket 32 is used to contact the inner wall of the gate 61. The middle part of the outer side of the second jacket 32 is provided with protrusions from both ends, that is, the middle part of the outer side of the second jacket 32 is in sealed contact with the inner wall of the gate 61. This arrangement can make the size of the heat insulation cavity 33 larger, which is beneficial to prevent the heat of the first jacket 31 from being conducted to the second jacket 32.
[0059] In some embodiments, the first jacket 31 and the second jacket 32 enclose and form a heat insulation cavity 33, for example:
[0060] Please see Figures 7 to 12 The insulation sleeve 3 includes a first outer sleeve 31 and a second outer sleeve 32. The first outer sleeve 31 is connected to the body 1 and sleeved on the outside of the nozzle head 2. The first outer sleeve 31 has at least a partial gap with the nozzle head 2 to allow for the insertion of the second outer sleeve 32. The second outer sleeve 32 is connected to the first outer sleeve 31 and located within the gap between the first outer sleeve 31 and the nozzle head 2. The inner side of the first outer sleeve 31 is in contact with the nozzle head 2, and the outer side of the first outer sleeve 31 is used to contact the inner wall of the gate 61. The heat from the nozzle head 2 is first conducted to the second outer sleeve 32 and then to the first outer sleeve 31.
[0061] It should be noted that, since the second jacket 32 is connected to the first jacket 31, the second jacket 32 can be spaced apart from the outer side of the nozzle head 2, that is, an air cavity is formed between the second jacket 32 and the nozzle head 2, which can effectively prevent the heat of the nozzle head 2 from being conducted to the second jacket 32. Moreover, a heat insulation cavity 33 is formed between the first jacket 31 and the second jacket 32, and the first jacket 31 only partially contacts the inner wall of the gate 61, which helps to prevent heat from being conducted to the mold core 6.
[0062] Please see Figure 8 and Figure 11The inner side of the first outer jacket 31 is provided with a first protrusion 311, which abuts against the outer side of the second outer jacket 32; the outer side of the second outer jacket 32 is provided with a second protrusion 323, which abuts against the inner side of the first outer jacket 31. The first protrusion 311, the first outer jacket 31, the second protrusion 323 and the second outer jacket 32 together form a heat insulation cavity 33.
[0063] Please see Figure 7 , Figure 8 and Figure 9 In the third example, the bottom end of the second outer jacket 32 is provided with a second protrusion 323, and the bottom end of the first outer jacket 31 is provided with a groove that matches the second protrusion 323. The second protrusion 323 is partially embedded in the groove of the first outer jacket 31.
[0064] Please see Figure 10 , Figure 11 and Figure 12 In the fourth example, the bottom end of the first outer jacket 31 is provided with a first protrusion 311, and the top end of the second outer jacket 32 is provided with a second protrusion 323. The first outer jacket 31 is provided with a groove that matches the second protrusion 323, and the second protrusion 323 is partially embedded in the groove of the first outer jacket 31. This allows the second outer jacket 32 to cover the nozzle head 2, thereby maximizing the prevention of heat conduction from the nozzle head 2 to the mold core 6.
[0065] In some embodiments, the insulation sleeve 3 and the body 1 are screwed together, and one of the insulation sleeve 3 and the body 1 is provided with an internal thread and the other is provided with an external thread. For example, the inner side of the first outer sleeve 31 is provided with an internal thread and the outer side of the body 1 is provided with an external thread; or, the inner side of the first outer sleeve 31 is provided with an external thread and the outer side of the body 1 is provided with an internal thread.
[0066] Please see Figure 1 , Figure 4 , Figure 7 and Figure 10 The nozzle device also includes a temperature control component 4, which heats the insulation sleeve 3, thereby maintaining the insulation sleeve 3 within a preset temperature range to minimize the temperature difference between the nozzle head 2 and the insulation sleeve 3. The temperature control component 4 includes a heating element 41 and a temperature detector 42. The heating element 41 is located on the outside of the insulation sleeve 3 and is used to heat the insulation sleeve 3. The temperature detector 42 is located on the outside of the insulation sleeve 3 and is used to detect the temperature of the insulation sleeve 3 to provide heating information to the heating element 41. The heating element 41 can be a resistance heater, and the temperature detector 42 can be a thermocouple, with at least a portion of the thermocouple extending into the first outer jacket 31.
[0067] Please see Figure 1 , Figure 4 and Figure 7In some embodiments, the nozzle device further includes a valve core 5 rotatably disposed within the first flow channel 11. A portion of the valve core 5 contacts the inner wall of the first flow channel 11, and another portion has a gap with the inner wall of the first flow channel 11, thereby making the nozzle head 2 a needle-type nozzle. The valve core 5 can remove material adhering to the nozzle orifice of the nozzle head 2 by rotation, thereby preventing material from clogging the nozzle orifice of the nozzle head 2.
[0068] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A nozzle device for injecting a raw material into a gate of a mold core, characterized by, The nozzle device comprises: a body provided with a first flow channel; a nozzle head connected to one end of the body and provided with a second flow channel in communication with the first flow channel, the nozzle head being used to inject the raw material into the gate through the second flow channel, and the nozzle head having a gap with the inner wall of the gate; and a heat preservation sleeve connected to the body and sleeved on the outside of the nozzle head, the inside of the heat preservation sleeve being in contact with the outside of the nozzle head, and the outside of the heat preservation sleeve being in contact with the inner wall of the gate, the heat preservation sleeve being provided with a heat insulation cavity between the inside and the outside thereof.
2. The nozzle device of claim 1, wherein The heat insulation cavity is annular, the nozzle head is located in the heat insulation cavity, and the length of the heat insulation cavity extends along the length direction of the second flow channel.
3. The nozzle device of claim 1, wherein, The heat preservation sleeve comprises: a first outer sleeve connected to the body and sleeved on the outside of the nozzle head; and a second outer sleeve connected to the first outer sleeve and sleeved on the outside of the first outer sleeve; wherein the inside of the first outer sleeve is in contact with the nozzle head, the outside of the second outer sleeve is in contact with the inner wall of the gate, and the heat insulation cavity is provided between the first outer sleeve and the second outer sleeve.
4. The nozzle device of claim 3, wherein The inside of the second outer sleeve is provided with the heat insulation cavity.
5. The nozzle device of claim 4, wherein, The second outer sleeve comprises: a connecting portion connected to the first outer sleeve and sleeved on the outside of the first outer sleeve, the inside of the connecting portion being provided with the heat insulation cavity; and an abutting portion connected to the outside of the connecting portion, the length extension direction of the abutting portion having an included angle with the length extension direction of the connecting portion, and the abutting portion being used to contact the inner wall of the gate.
6. The nozzle apparatus of claim 4, wherein, The outside of the second outer sleeve is provided with protrusions and recesses, and the protruding portions of the second outer sleeve are used to contact the inner wall of the gate.
7. The nozzle apparatus of claim 1, wherein The heat preservation sleeve comprises: a first outer sleeve connected to the body and sleeved on the outside of the nozzle head, the first outer sleeve having a gap at least partially with the nozzle head; and a second outer sleeve connected to the first outer sleeve and located in the gap between the first outer sleeve and the nozzle head; wherein the inside of the first outer sleeve is in contact with the nozzle head, the outside of the first outer sleeve is used to contact the inner wall of the gate, and the heat insulation cavity is provided between the first outer sleeve and the second outer sleeve.
8. The nozzle device of claim 7, wherein, The inside of the first outer sleeve is provided with a first protruding portion, and the first protruding portion abuts against the outside of the second outer sleeve; the outside of the second outer sleeve is provided with a second protruding portion, and the second protruding portion abuts against the inside of the first outer sleeve, the first protruding portion, the first outer sleeve, the second protruding portion, and the second outer sleeve collectively enclosing the heat insulation cavity.
9. The nozzle apparatus of claim 1, wherein, The nozzle device further comprises a temperature control assembly, and the temperature control assembly comprises: a heating element arranged on the outside of the heat preservation sleeve; and a temperature detector arranged on the outside of the heat preservation sleeve.
10. The nozzle apparatus of claim 1, wherein, The heat preservation sleeve and the body are screw-connected, one of the heat preservation sleeve and the body is provided with an internal thread, and the other is provided with an external thread.