An injection mold

Abstract

The utility model discloses an injection mold, which includes a sprue plate and a nozzle. The nozzle is arranged on the sprue plate. A feed hole and a funnel groove connected to the feed hole are arranged in the nozzle. The feed hole is arranged at the bottom of the funnel groove. The cross-sectional area of ​​the funnel groove gradually increases from bottom to top along the vertical height direction, and the funnel groove includes a bevel portion and an arc portion connected to each other from top to bottom, and the inner surface of the arc portion is an arc surface. The nozzle height of the utility model is relatively small (that is, the nozzle as a whole is also relatively small), and the feed hole is also relatively short, which can reduce material loss and reduce the time for the molten blank to pass through the feed hole. In addition, since the entire groove wall of the hopper groove is an inclined surface with a certain inclination angle, when feeding through the funnel groove of the nozzle, the molten blank can quickly slide into the feed port through this inclined surface, thereby increasing the feeding speed.

Description

Technical Field

[0001] The utility model relates to the field of mechanical manufacturing, in particular to an injection mold. Background Art

[0002] With the development of modern industry, injection molds play a vital role in the manufacturing process of various products. Injection molds are tools used to make molded objects in industrial production. Through injection molds, raw materials can be processed into products with specific shapes and sizes. These products are widely used in electronics, construction, automobiles and other fields. In the prior art, in order to smoothly inject the molten material into the injection mold, that is, to accurately flow to the model cavity of the injection mold, a nozzle (i.e., nozzle) is set on the injection mold.

[0003] However, the conventional nozzle is arranged above the front template and penetrates through the multiple plates (ie, the top plate and the nozzle plate) above the front template, which requires more materials, has a longer glue feeding system and a slower feeding speed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an injection mold to solve the problems that the nozzle in the traditional injection mold uses more materials, the glue feeding system is longer and the feeding speed is slower.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An injection mold includes a sprue plate and a nozzle, wherein the nozzle is arranged on the sprue plate, and a feed hole and a funnel groove connected to the feed hole are provided in the nozzle, wherein the feed hole is arranged at the bottom of the funnel groove, and the cross-sectional area of ​​the funnel groove gradually increases from bottom to top along the vertical height direction, and the funnel groove includes a bevel portion and an arc portion connected to each other from top to bottom, and the surface of the arc portion is an arc surface.

[0007] Furthermore, the injection mold described in the utility model also includes a cover plate, which is arranged above the nozzle plate in the vertical height direction, and the cover plate is provided with a guide hole coaxially arranged with the nozzle.

[0008] Furthermore, in the injection mold described in the utility model, the guide hole includes a first hole and a second hole that are coaxially arranged and connected to each other, the diameter of the first hole is greater than or equal to the slot diameter of the funnel groove, and the axial cross-sectional area of ​​the second hole gradually increases from bottom to top along the vertical height direction.

[0009] Furthermore, in the injection mold described in the utility model, the value range of the notch diameter d1 of the funnel groove is: 90mm≤d1≤100mm.

[0010] Furthermore, in the injection mold described in the utility model, a plurality of first through holes are provided on the cover plate, and a plurality of second through holes are provided on the nozzle; wherein the first through holes and the second through holes are coaxially arranged.

[0011] Furthermore, in the injection mold described in the utility model, the angle α between the extending direction of the inclined surface of the inclined edge portion and the vertical height direction is in the range of 40°≤α≤50°.

[0012] Furthermore, in the injection mold described in the utility model, the depth h1 of the funnel groove has a value range of: 20mm≤h1≤40mm.

[0013] Furthermore, in the injection mold described in the utility model, the value range of the hole height h2 of the feed hole is: 15mm≤h2≤30mm.

[0014] Furthermore, in the injection mold described in the utility model, the axial cross-sectional area of ​​the feed hole gradually decreases from bottom to top along the vertical height direction.

[0015] Furthermore, in the injection mold described in the utility model, the shape of the axial cross-section of the feed hole is circular, and the upper bottom diameter size d2 of the feed hole is: 2mm≤d2≤5mm.

[0016] The beneficial effect of the present invention is that the nozzle provided by the present invention is arranged in the nozzle plate, and its entire height is equivalent to the thickness of the nozzle plate. Compared with the existing nozzles (because the existing nozzles penetrate two plates such as the panel and the nozzle plate, its height is equivalent to the thickness of the two plates of the panel and the nozzle plate), the nozzle height of the present invention is relatively small (that is, the nozzle as a whole is also relatively small), which can achieve the effect of saving workpiece materials. Correspondingly, the height / length of the feed hole (that is, the glue feeding system) in the nozzle of the present invention will also be shortened accordingly as the nozzle height is reduced, thereby reducing material loss and reducing the time for the molten billet to pass through the feed hole, that is, the shorter the feed hole, the shorter the time it takes for the billet to pass through the feed hole. In addition, since the cross section of the funnel groove in the vertical height direction gradually increases with the vertical height direction upward, that is, the entire groove wall of the funnel groove is an inclined surface with a certain inclination angle, when feeding through the funnel groove of the nozzle, the molten billet can quickly slide into the feed port through this inclined surface without being retained in the funnel groove, thereby increasing the feeding speed. Moreover, since the bottom of the funnel groove is an arc portion, the surface of the arc portion is an arc surface, which helps to promote the billet to enter the feed hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of the injection mold of the utility model in one embodiment from one viewing angle;

[0018] Figure 2 for Figure 1 A top view of the injection mold shown;

[0019] Figure 3 for Figure 2 Sectional view of section AA;

[0020] Figure 4 It is a schematic structural diagram of the nozzle of the utility model in one embodiment at one viewing angle;

[0021] Figure 5 It is a schematic structural diagram of the nozzle described in the utility model under another viewing angle in one implementation manner.

[0022] Description of labels:

[0023] 1. Nozzle plate;

[0024] 2. nozzle; 21. feed hole; 22. funnel groove; 221. bevel portion; 222. arc portion; 23. second through hole;

[0025] 3. Panel; 31. Diversion hole; 311. First hole; 312. Second hole; 32. First through hole;

[0026] 4. Front template;

[0027] 5. Post template. DETAILED DESCRIPTION

[0028] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0029] The existing nozzle 2 is arranged above the front template 4 and penetrates through the multiple plates (i.e., the panel 3 and the nozzle plate 1) above the front template 4. The nozzle 2 is relatively large, and more materials are required to make the nozzle 2. In addition, the feed hole 21 (i.e., the glue feeding system) of the existing nozzle 2 is long, and the feed speed is slow, which cannot meet the actual demand for the nozzle 2. For this purpose, please refer to Figures 1 to 5 The utility model designs an injection mold, which includes a gate plate 1 and a nozzle 2. The nozzle 2 is arranged on the gate plate 1. A feed hole 21 and a funnel groove 22 connected to the feed hole 21 are provided in the nozzle 2. The feed hole 21 is arranged at the bottom of the funnel groove 22. The cross-sectional area of ​​the funnel groove 22 gradually increases from bottom to top along the vertical height direction, and the funnel groove 22 includes a bevel portion 221 and an arc portion 222 connected to each other from top to bottom, and the inner surface of the arc portion 222 is an arc surface.

[0030] From the above description, it can be seen that the beneficial effect of the utility model is that the nozzle 2 provided by the utility model is arranged in the nozzle plate 1, and its entire height is equivalent to the thickness of the nozzle plate 1. Compared with the existing nozzle 2 (because the existing nozzle 2 penetrates two plates such as the panel 3 and the nozzle plate 1, its height is equivalent to the thickness of the two plates of the panel 3 and the nozzle plate 1), the nozzle 2 of the utility model is relatively small in height (that is, the nozzle 2 as a whole is also relatively small), which can achieve the effect of saving workpiece materials. Correspondingly, the height / length of the feed hole 21 in the nozzle 2 of the utility model will also be shortened accordingly as the height of the nozzle 2 is reduced, thereby reducing material loss and reducing the time for the molten billet to pass through the feed hole 21, that is, the shorter the feed hole 21, the shorter the time it takes for the billet to pass through the feed hole 21. In addition, since the cross section of the funnel groove 22 in the vertical height direction gradually increases with the vertical height direction upward, that is, the entire groove wall of the funnel groove 22 is an inclined surface with a certain inclination angle, when feeding through the funnel groove 22 of the nozzle 2, the molten billet can quickly slide into the feed port through this inclined surface without being retained in the funnel groove 22, thereby increasing the feeding speed. Moreover, since the bottom of the funnel groove 22 is a circular arc portion 222, the surface of the circular arc portion 222 is a circular arc surface, which helps to promote the billet to enter the feed hole 21.

[0031] Furthermore, the injection mold described in the present invention further includes a panel 3 , which is arranged above the nozzle plate 1 in the vertical height direction, and the panel 3 is provided with a guide hole 31 coaxially arranged with the nozzle 2 .

[0032] In the above technical solution of the utility model, a guide hole 31 coaxially arranged with the nozzle 2 is provided on the panel 3 , so that the blank (ie the material for preparing the product) can be introduced into the nozzle 2 through the guide hole 31 .

[0033] Furthermore, in the injection mold described in the present invention, the guide hole 31 includes a first hole 311 and a second hole 312 which are coaxially arranged and connected to each other, the diameter of the first hole 311 is greater than or equal to the slot diameter of the funnel groove 22, and the axial cross-sectional area of ​​the second hole 312 gradually increases from bottom to top along the vertical height direction.

[0034] In the above technical solution of the utility model, the guide hole 31 includes a first hole and a second hole which are coaxially arranged and connected to each other, and the diameter of the first hole is greater than or equal to the notch diameter of the funnel groove 22, so that the material can be quickly introduced into the nozzle 2 through the guide hole 31, and the efficiency of introducing the material into the nozzle 2 is not affected by the guide hole 31 being too small. At the same time, the axial cross-section of the second hole gradually increases upward with the vertical height direction, so as to inject the material into the guide hole 31.

[0035] Furthermore, in the injection mold of the present invention, the diameter d1 of the slot of the funnel slot 22 has a value range of 90 mm ≤ d1 ≤ 100 mm.

[0036] In practical applications, the diameter d1 of the slot of the funnel slot 22 can be selected within a range of values ​​according to actual conditions, such as 94 mm, which is not limited here.

[0037] Furthermore, in the injection mold described in the present invention, the panel 3 is provided with a plurality of first through holes 32, and correspondingly, the nozzle 2 is provided with a plurality of second through holes 23, wherein the first through holes 32 and the second through holes 23 are coaxially arranged.

[0038] In the above technical solution of the utility model, the first through hole 32 and the second through hole 23 are coaxially arranged and can form a passage for the bolt to pass through. By arranging the bolt in the corresponding first through hole 32 and the second through hole 23, the panel 3 can be fixedly connected to the nozzle 2.

[0039] Furthermore, in the injection mold of the present invention, the angle α between the extending direction of the inclined surface of the inclined edge portion 221 and the vertical height direction is in the range of 40°≤α≤50°.

[0040] In actual applications, the angle between the extension direction of the inclined surface of the inclined edge portion 221 and the vertical height direction (i.e., the inclination angle of the groove wall of the inclined edge portion 221 of the funnel groove 22) can be selected according to actual conditions, such as 45°, which is not limited here. By making the inclined edge portion 221 have a corresponding inclination angle, the material flowing into the funnel groove 22 can quickly pass through the inclined surface into the feed hole 21.

[0041] Furthermore, in the injection mold of the present invention, the depth h1 of the funnel groove 22 has a value range of 20 mm ≤ h1 ≤ 40 mm.

[0042] In practical applications, the depth of the funnel groove 22 can be selected within a range of values ​​according to actual conditions, such as 30 mm, which is not limited here.

[0043] Furthermore, in the injection mold of the present invention, the hole height h2 of the feed hole 21 has a value range of: 15 mm ≤ h2 ≤ 30 mm.

[0044] In practical applications, within the range of values, the hole height h2 of the feed hole 21 can be selected according to actual conditions, such as 25 mm, which is not limited here. The hole height of the feed hole 21 of the utility model is less than the height of the existing feed port, which reduces the length of the feed port and reduces the loss of raw materials.

[0045] Furthermore, in the injection mold of the present invention, the axial cross-sectional area of ​​the feed hole 21 gradually decreases from bottom to top along the vertical height direction.

[0046] Furthermore, in the injection mold of the present invention, the shape of the axial cross section of the feed hole 21 is circular, and the upper bottom diameter d2 of the feed hole 21 is: 2mm≤d2≤5mm.

[0047] In the above technical solution of the utility model, the feed hole 21 is a truncated cone-shaped hole, and the upper bottom diameter of the feed hole 21 is smaller than the lower bottom diameter, that is, the axial cross section of the feed hole 21 gradually increases downward along the vertical height direction. When the material is injected into the feed hole 21 and flows in the feed hole 21, since the axial cross section of the feed hole 21 gradually increases downward, the material can flow quickly in the feed hole 21, avoiding accumulation in the feed hole 21 and hindering the flow of the blank (that is, the material for preparing the product).

[0048] Please refer to Figures 1 to 5 The first embodiment of the utility model is: an injection mold, which can be used to make molded articles. In this embodiment, the injection mold includes a panel 3, a nozzle plate 1, a front template 4, and a rear template 5 connected in sequence from top to bottom. Figures 1 to 5 The above components are described in detail.

[0049] In this embodiment, the panel 3 is arranged above the nozzle plate 1, and a guide hole 31 is arranged on the panel 3. The guide hole 31 is located at the central position of the panel 3, and the cross section of the guide hole 31 in the vertical height direction is circular. The guide hole 31 includes a first hole and a second hole that are coaxially arranged and connected to each other, the diameter of the first hole is slightly larger than the notch diameter of the funnel groove 22, and the axial cross section of the second hole gradually increases upward along the vertical height direction.

[0050] In this embodiment, the nozzle 2 is provided on the above-mentioned nozzle plate 1, and the nozzle 2 is located at the central position of the nozzle plate 1. A feed hole 21 and a funnel groove 22 connected to the feed hole 21 are provided in the nozzle 2. The feed hole 21 is arranged at the bottom of the funnel groove 22. The axial cross section of the feed hole 21 gradually decreases upward along the vertical height direction, and its axial cross section is circular, that is, the feed hole 21 is a truncated cone with a small top and a large bottom. It should be noted that the inclination angle of the hole wall of the feed hole 21 can be between 20 degrees and 25 degrees, which is not limited here. The funnel groove 22 is coaxially arranged with the guide hole 31, and the cross section of the funnel groove 22 in the vertical height direction gradually increases upward along the vertical height direction, and the funnel groove 22 includes a bevel portion 221 and an arc portion 222 connected to each other from top to bottom, and the surface of the arc portion 222 is an arc surface. In actual use, the specific parameters of the feed hole 21 and the funnel groove 22 are as follows: the upper bottom diameter of the feed hole 21 is 3 mm, and the lower bottom diameter of the feed hole 21 will be set according to different actual conditions; the hole height h2 of the feed hole 21 is 20 mm. The slot diameter of the funnel groove 22 is 94 mm; the slot depth h1 of the funnel groove 22 is 30 mm; the angle α between the extension direction of the slot wall of the funnel groove 22 and the vertical height direction is in the range of 45°.

[0051] In addition, the injection mold of the utility model is also provided with a flow channel, which can be used to allow the molten material (material for preparing the product) to pass through, one end of the flow channel is connected to the feed hole 21 of the nozzle 2, and the other end is connected to the mold cavity. That is, the molten material can pass through the nozzle 2, the feed hole 21 and the flow channel in sequence, and finally flow into the mold cavity to prepare a product of a corresponding shape.

[0052] In summary, the injection mold provided by the utility model: the height of the nozzle 2 of the utility model is relatively small (that is, the nozzle 2 as a whole is also relatively small), which can achieve the effect of saving workpiece materials. Correspondingly, the height / length of the feed hole 21 in the nozzle 2 of the utility model will also be shortened accordingly as the height of the nozzle 2 is reduced, thereby reducing material loss and reducing the time for the molten blank to pass through the feed hole 21, that is, the shorter the feed hole 21, the shorter the time it takes for the blank to pass through the feed hole 21. In addition, since the cross-section of the funnel groove 22 in the vertical height direction gradually increases upward along the vertical height direction, that is, the entire groove wall of the funnel groove 22 is an inclined surface with a certain inclination angle, when feeding through the funnel groove 22 of the nozzle 2, the molten blank can quickly slide into the feed port through this inclined surface without being retained in the funnel groove 22, thereby increasing the feeding speed. Moreover, since the bottom of the funnel groove 22 is a circular arc portion 222 , the surface of the circular arc portion 222 is a circular arc surface, which helps to promote the blank to enter the feeding hole 21 .

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An injection mold, comprising a nozzle plate and a nozzle, characterized in that: The nozzle is arranged on the water inlet plate, and is provided with a feed hole and a funnel groove connected to the feed hole. The feed hole is arranged at the bottom of the funnel groove. The cross-sectional area of ​​the funnel groove gradually increases from bottom to top along the vertical height direction, and the funnel groove includes a bevel portion and an arc portion connected to each other from top to bottom, and the inner surface of the arc portion is an arc surface.

2. The injection mold according to claim 1, characterized in that: It also includes a cover plate, which is arranged above the nozzle plate in the vertical height direction, and the cover plate is provided with a guide hole coaxially arranged with the nozzle.

3. The injection mold according to claim 2, characterized in that: The guide hole includes a first hole and a second hole which are coaxially arranged and connected to each other, the diameter of the first hole is greater than or equal to the slot diameter of the funnel slot, and the axial cross-sectional area of ​​the second hole gradually increases from bottom to top along the vertical height direction.

4. The injection mold according to claim 3, characterized in that: The value range of the slot diameter d1 of the funnel slot is: 90mm≤d1≤100mm.

5. The injection mold according to claim 2, characterized in that: The cover plate is provided with a plurality of first through holes, and the nozzle is provided with a plurality of second through holes; wherein the first through holes and the second through holes are coaxially arranged.

6. The injection mold according to claim 1, characterized in that: The value range of the angle α between the extending direction of the inclined surface of the inclined edge portion and the vertical height direction is: 40°≤α≤50°.

7. The injection mold according to claim 1, characterized in that: The depth h1 of the funnel groove has a value range of 20 mm ≤ h1 ≤ 40 mm.

8. The injection mold according to claim 1, characterized in that: The range of the hole height h2 of the feed hole is: 15mm≤h2≤30mm.

9. The injection mold according to claim 1, characterized in that: The axial cross-sectional area of ​​the feed hole gradually decreases from bottom to top along the vertical height direction.

10. The injection mold according to claim 9, characterized in that: The shape of the axial cross section of the feed hole is circular, and the upper bottom diameter d2 of the feed hole is: 2mm≤d2≤5mm.

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