Injection mold

Abstract

The utility model discloses an injection mold which comprises a mold plate and a mold core arranged on the mold plate, a cooling cavity is formed in the mold core, a connecting channel, a water inlet channel and a water outlet channel are arranged in the mold plate, the connecting channel is communicated with the water outlet channel, and the cooling cavity penetrates through the mold core and is communicated and connected with the connecting channel; the mold further comprises a cooling pipe, one end of the cooling pipe is clamped and fixed to the mold plate, the other end of the cooling pipe penetrates through the connecting channel and extends into the cooling cavity, the cooling pipe is further provided with a water inlet and a water outlet, the water inlet is communicated with the water inlet channel, and the water outlet is communicated with the cooling cavity. According to the utility model, through the waterway structure, the mold core can be cooled, radiated and the like, so that the condition of non-uniform thermal deformation of the mold core is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to an injection mold. Background Art

[0002] As is well known, the mold core is widely used in injection molding. It is commonly used to form the internal shape of a product. When manufacturing plastic products with complex internal structures, the mold core is placed on one side or inside the mold to occupy and shape these internal spaces when the plastic material is injected. In this way, when the plastic cools and solidifies, the mold core can be removed to obtain the required internal shape.

[0003] However, through research by the inventor, it is found that during the actual production process, the mold core may have uneven thermal deformation, resulting in unstable product dimensions, and even the prepared products may be deformed or warped. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an injection mold to solve the problem of uneven thermal deformation of the mold core in the existing mold.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: an injection mold, which includes a template and a mold core arranged on the template. A cooling cavity is opened in the mold core. A connection channel, a water inlet channel, and a water outlet channel are arranged in the template. The connection channel is communicated with the water outlet channel. The cooling cavity penetrates through the mold core and is connected to the connection channel in a through manner. Further, it includes a cooling pipe. One end of the cooling pipe is clamped on the template, and the other end passes through the connection channel and extends into the cooling cavity. The cooling pipe is also provided with a water inlet and a water outlet. The water inlet is communicated with the water inlet channel, and the water outlet is communicated with the cooling cavity.

[0006] Further, in the injection mold of the utility model, the cooling pipe includes a pipe seat and a pipe body connected to each other. The pipe seat is clamped in the end of the connection channel far from the mold core, and at least part of the pipe body passes through the connection channel and extends into the cooling cavity.

[0007] Further, in the injection mold of the utility model, the pipe seat includes a fixed seat and a connection seat connected to each other, and the water inlet is located on the connection seat.

[0008] Further, in the injection mold of the utility model, both ends of the pipe body are provided with openings. One opening of the pipe body is connected to the water inlet, and the other opening is the water outlet.

[0009] Further, in the injection mold of the present utility model, a waterproof ring is further included. An annular groove is provided on the template, and the waterproof ring is located in the annular groove.

[0010] Further, in the injection mold of the present utility model, both the water inlet channel and the water outlet channel are arranged on the outer periphery of the connection channel, and the extending direction of the connection channel forms an angle with the extending directions of the water inlet channel and the water outlet channel.

[0011] Further, in the injection mold of the present utility model, the cross-sectional radius of the cooling cavity is smaller than the cross-sectional radius of the connection channel, and the cross-sectional radius of the cooling cavity is larger than the cross-sectional radius of the cooling pipe.

[0012] Further, in the injection mold of the present utility model, the position of the water outlet channel in the vertical height direction of the template is higher than that of the water inlet channel.

[0013] Further, in the injection mold of the present utility model, the cooling cavity is coaxially arranged with the connection channel.

[0014] Further, in the injection mold of the present utility model, the cooling cavity extends along the central axis direction of the mold core.

[0015] The beneficial effects of the present utility model are as follows: The mold core is arranged above the template. A cooling cavity is opened inside the mold core, and a cooling pipe is correspondingly arranged. One end of the cooling pipe is clamped on the template, and the other end extends into the cooling cavity. On this basis, a water inlet and a water outlet are arranged on the cooling pipe. Among them, the water inlet is communicated with the water inlet channel, and the water outlet is communicated with the cooling cavity. During actual use, the cooling water flows into the water inlet channel on the template through a water pump, that is, water enters through the water inlet channel on the template. Since the water inlet channel is communicated with the water inlet of the cooling pipe, and the water outlet of the cooling pipe is communicated with the cooling cavity. Therefore, the cooling water entering from the cooling cavity inside the template can enter the cooling cavity through the cooling pipe, and then enter the inside of the mold core to absorb the heat inside the mold core to cool the mold core. After absorbing the heat, it can flow out through the connection channel and the water outlet channel in sequence. To sum up, through the above waterway structure, the mold core can be cooled and dissipated heat, etc., to reduce the situation of uneven thermal deformation of the mold core, so that the temperature of the mold core can be evenly controlled (that is, the thermal deformation of the mold core is stable and uniform), and further the prepared product is not easily deformed and warped, improving the dimensional stability, product concentricity, flatness and roundness of the prepared product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the injection mold of the present utility model from a certain perspective in one embodiment;

[0017] Figure 2 Partial structural schematic diagram of the injection mold according to the present utility model from a certain perspective in one embodiment;

[0018] Figure 3 Structural schematic diagram of the mold core in the injection mold according to the present utility model from a certain perspective in one embodiment;

[0019] Figure 4 Structural schematic diagram of the mold core in the injection mold according to the present utility model from another perspective in one embodiment;

[0020] Figure 5 Cross-sectional schematic diagram of the mold core in the injection mold according to the present utility model from a certain perspective in one embodiment;

[0021] Figure 6 Structural schematic diagram of the cooling pipe in the injection mold according to the present utility model from a certain perspective in one embodiment;

[0022] Figure 7 Structural schematic diagram of the cooling pipe in the injection mold according to the present utility model from another perspective in one embodiment;

[0023] Figure 8 Cross-sectional schematic diagram of the cooling pipe in the injection mold according to the present utility model from a certain perspective in one embodiment;

[0024] Figure 9 Structural schematic diagram of the injection mold according to the present utility model from a certain perspective in one embodiment after hiding the template.

[0025] Label description:

[0026] 1. Mold core; 11. Cooling cavity; 12. Mold core body; 13. Mold core base;

[0027] 2. Template; 21. Water inlet channel; 22. Connection channel; 23. Water outlet channel;

[0028] 3. Cooling pipe; 31. Water inlet; 32. Water outlet; 33. Pipe body; 34. Fixed seat; 35. Connection seat;

[0029] 4. Waterproof ring. Specific embodiments

[0030] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0031] Please refer to Figures 1 to 9, the utility model relates to an injection mold, which comprises a template and a mold core 1 arranged on the template. A cooling cavity 11 is formed in the mold core, and a connecting channel 22, a water inlet channel 21 and a water outlet channel 23 are arranged in the template 2. The connecting channel is communicated with the water outlet channel, and the cooling cavity penetrates through the mold core and is connected with the connecting channel in a through manner; wherein, a cooling pipe 3 is further included. One end of the cooling pipe is clamped on the template, and the other end passes through the connecting channel and extends into the cooling cavity. The cooling pipe is further provided with a water inlet 31 and a water outlet 32. The water inlet is communicated with the water inlet channel, and the water outlet is communicated with the cooling cavity.

[0032] As can be seen from the above description, the beneficial effects of the utility model are as follows: The mold core 1 is arranged above the template 2, a cooling cavity 11 is formed inside the mold core 1, and a cooling pipe 3 is correspondingly arranged. One end of the cooling pipe 3 is clamped on the template 2, and the other end extends into the cooling cavity 11. On this basis, a water inlet 31 and a water outlet 32 are arranged on the cooling pipe 3. Among them, the water inlet 31 is communicated with the water inlet channel 21, and the water outlet 32 is communicated with the cooling cavity 11. During actual use, cooling water flows into the water inlet channel 21 on the template 2 through a water pump, that is, water enters through the water inlet channel 21 on the template 2. Since the water inlet channel 21 is communicated with the water inlet 31 of the cooling pipe 3, and the water outlet 32 of the cooling pipe 3 is communicated with the cooling cavity 11. Therefore, the cooling water entering from the cooling cavity 11 in the template 2 can enter the cooling cavity 11 through the cooling pipe 3, thereby entering the inside of the mold core 1 and absorbing the heat inside the mold core 1 to cool the mold core 1. After cooling the mold core 1, since the cooling cavity 11 is communicated with the connecting channel 22, and the connecting channel 22 is communicated with the water outlet channel 23 of the template 2, the cooling water can flow outwards sequentially along the cooling cavity 11, the connecting channel 22 and the water outlet channel 23. To sum up, through the above waterway structure, the mold core 1 can be cooled and dissipated heat, etc., so that the mold core is cooled evenly, reducing the occurrence of uneven thermal stress and uneven tissue stress, and further reducing the occurrence of uneven thermal deformation of the mold core 1 of the mold. That is to say, during the cooling process, since there are waterways in both the template 2 and the mold core 1, the cooling water flows under high pressure, reducing the temperature of the template 2 and the mold core 1, so that the temperature of the mold core 1 can be evenly controlled (that is, the thermal deformation of the mold core is stable and uniform), and further making the prepared product not easily deformed and warped, improving the dimensional stability, product concentricity, flatness and roundness of the prepared product.

[0033] Further, in the injection mold of the present utility model, the cooling pipe 3 includes a pipe seat and a pipe body 33 connected to each other. The pipe seat is clamped in the end of the connecting channel 22 far from the mold core 1, and at least part of the pipe body 33 passes through the connecting channel 22 and extends into the cooling cavity 11.

[0034] As described above, the cooling pipe 3 includes a pipe seat and a pipe body 33. Clamping the pipe seat in the connection channel 22 realizes fixing the cooling pipe 3 on the template 2 on one hand. On the other hand, since the pipe seat is clamped at one end of the connection channel 22 away from the mold core 1, the pipe seat can block one end of the connection channel 22, so that when in use later, the cooling water flowing into the connection channel 22 will not flow out from the bottom of the template 2.

[0035] Further, in the injection mold of the present utility model, the pipe seat includes a fixed seat 34 and a connection seat 35 connected to each other. The connection seat 35 is connected to the pipe body 33, and the water inlet 31 is located on the connection seat 35.

[0036] As described above, setting the water inlet 31 on the connection seat 35 enables the water inlet 31 to communicate with the pipe body 33 so that the cooling water can enter the pipe body 33. In addition, it should be noted that the periphery of the water inlet 31 of the cooling pipe 3 is closely fitted with the template 2, ensuring the only flow direction of the cooling water, so as to ensure that the cooling water does not leak when flowing from the water inlet channel 21 of the template 2 into the cooling pipe 3.

[0037] Further, in the injection mold of the present utility model, both ends of the pipe body 33 are open. One open end of the pipe body 33 is connected to the water inlet 31, and the other open end is the water outlet 32.

[0038] As described above, both ends of the pipe body 33 are open so that the cooling water can flow into the cooling cavity 11 through the pipe body 33. In addition, the pipe body 33 of the cooling pipe 3 extends into the cooling cavity 11 of the mold core 1 and does not touch the top of the cooling cavity 11.

[0039] Further, in the injection mold of the present utility model, it further includes a waterproof ring 4. The template 2 is provided with an annular groove, and the waterproof ring 4 is located in the annular groove.

[0040] As described above, a waterproof ring 4 is provided at the bottom of the mold core 1 to prevent the cooling water from leaking out under high pressure. In practical applications, after the cooling water flows out from the water outlet 32 of the cooling pipe 3, it flows into the inner cavity of the mold core 1 (i.e., the cooling cavity 11). Since there is a waterproof ring 4 blocking between the bottom of the mold core 1 and the template 2, it is ensured that the cooling water does not overflow, and the cooling water flows to the template 2 and then flows out from the only water outlet channel 23 of the template 2.

[0041] Further, in the injection mold of the present utility model, both the water inlet channel 21 and the water outlet channel 23 are provided on the outer periphery of the connection channel 22, and the extending direction of the connection channel 22 is arranged at an angle with the extending directions of the water inlet channel 21 and the water outlet channel 23.

[0042] Further, in the injection mold of the present utility model, the cross-sectional radius of the cooling cavity 11 is smaller than the cross-sectional radius of the connection channel 22, and the cross-sectional radius of the cooling cavity 11 is larger than the cross-sectional radius of the cooling pipe 3.

[0043] As can be seen from the above description, making the cross-sectional radius of the cooling cavity 11 larger than the cross-sectional radius of the cooling pipe 3 allows for a remaining space in the cooling cavity 11 to accommodate the cooling water overflowing from the cooling pipe 3, so that the cooling water can cool the mold core 1.

[0044] Further, in the injection mold of the present utility model, the position of the water outlet channel 23 in the vertical height direction of the template 2 is higher than that of the water inlet channel 21.

[0045] Further, in the injection mold of the present utility model, the cooling cavity 11 and the connection channel 22 are coaxially arranged.

[0046] As can be seen from the above description, arranging the cooling cavity 11 and the connection channel 22 coaxially facilitates the cooling pipe 3 to extend from the connection channel 22 into the cooling cavity 11.

[0047] Further, in the injection mold of the present utility model, the cooling cavity 11 extends along the central axis direction of the mold core 1.

[0048] As can be seen from the above description, arranging the cooling cavity 11 in the middle of the mold core 1 facilitates uniform cooling of the mold core 1, that is, makes the cooling of the mold core more uniform.

[0049] Please refer to Figures 1 to 9 , Embodiment 1 of the present utility model is: an injection mold, as Figure 1 and Figure 2 shown, this injection mold includes a mold core 1, a template 2, and a cooling pipe 3, wherein the mold core 1 is arranged above the template 2, and the cooling pipe 3 is arranged in the internal cavities of the mold core 1 and the template 2. The following will specifically introduce the above components in combination with Figures 1 to 9 specifically.

[0050] In this embodiment, as Figure 3 and Figure 4 shown, the above mold core 1 includes a mold core main body 12 and a mold core base 13. The mold core main body 12 is arranged on the mold core base 13. Among them, the mold core base 13 is similar to a cylindrical object with two parts cut off, and the mold core base 13 is generally arranged at the corresponding position of the template 2. In addition, it should be noted that the mold core 1 is a hollow object, as Figure 5As shown, a cooling cavity 11 is provided inside the mold core 1. The cooling cavity 11 is a cylindrical structure extending along the central axis direction of the mold core 1. The cooling cavity 11 has only one end open, and the opening of the cooling cavity 11 is provided on the mold core base 13 and faces the above-mentioned template 2.

[0051] In this embodiment, as Figure 1 and Figure 2 shown, a corresponding water channel structure is provided on the above-mentioned template 2. An inlet channel 21, an outlet channel 23 and a connection channel 22 are provided in the template 2. The connection channel 22 extends along the vertical height direction of the template 2. The inlet channel 21 is provided on the left side of the connection channel 22, and the outlet channel 23 is provided on the right side of the connection channel 22. Both the inlet channel 21 and the outlet channel 23 extend along the horizontal direction of the template 2. The position of the outlet channel 23 in the vertical height direction of the template 2 is higher than that of the inlet channel 21. The above-mentioned outlet channel 23 communicates with the connection channel 22.

[0052] In this embodiment, as Figures 6 to 8 shown, the above-mentioned cooling pipe 3 includes a pipe seat and a pipe body 33 connected to each other. The pipe seat is clamped in the end of the connection channel 22 far from the mold core 1. It should be noted that the pipe seat includes a fixed seat 34 and a connection seat 35 connected to each other, and the connection seat 35 is connected to the pipe body 33. As Figure 2 shown, the fixed seat 34 of the cooling pipe 3 is embedded in the bottom of the connection channel 22 to block the end of the connection channel 22 far from the mold core 1. The connection seat 35 is provided on the fixed seat 34. An inlet 31 is provided on the connection seat 35, and the inlet 31 communicates with the inlet channel 21 inside the template 2. It should be noted that the pipe body 33 is a tubular hollow object with both ends open. One end opening communicates with the inlet 31 on the connection seat 35, and the other end passes through the connection channel 22 and extends into the cooling cavity 11 to form an outlet 32 for discharging the cooling water flowing into the cooling pipe 3.

[0053] In addition, in this embodiment, an annular groove is provided on the template 2, and a corresponding waterproof ring 4 is provided in the annular groove for waterproofing. As Figure 1 and Figure 9As shown, the cooling cavity 11, the connecting channel 22, and the pipe body 33 of the cooling pipe 3 are all cylindrical objects, and the three are coaxially arranged. Among them, the cross-sectional radius of the cooling cavity 11 is smaller than that of the connecting channel 22, and the cross-sectional radius of the cooling cavity 11 is larger than that of the pipe body 33. In actual application, the water inlet channel 21 on the template 2 is communicated with the water inlet 31 of the cooling pipe 3, the water outlet 32 of the cooling pipe 3 is communicated with the cooling cavity 11, the cooling cavity 11 is connected to the connecting channel 22, and the connecting channel 22 is further connected to the water outlet channel 23 on the template 2. When cooling, the cooling water flows into the water inlet channel 21 of the template 2 through the water pump, and then flows into the cooling pipe 3 through the water inlet 31 of the cooling pipe 3. Since the cooling pipe 3 is a hollow cylindrical object, the cooling water flowing into the cooling pipe 3 will overflow from the water outlet 32 of the cooling pipe 3, and thus overflow into the cooling cavity 11 of the mold core 1. The cooling water overflowing from the cooling pipe 3 into the cooling cavity 11 will absorb the heat inside the mold core 1 and play a cooling role on the mold core 1. After cooling, it will flow into the water outlet channel 23 through the connecting channel 22 communicated with the cooling cavity 11, and thus flow out through the water outlet channel 23.

[0054] In summary, the injection mold provided by the present utility model: (1) The water inlet channel 21 and the water outlet channel 23 are provided on the template 2, one for water inlet and the other for water outlet. A non-through cooling cavity 11 is provided in the mold core 1 for placing the cooling pipe 3. The template 2 is connected to the bottom of the mold core 1. At the same time, a waterproof ring 4 is provided at the bottom of the mold core 1 to prevent the cooling water from leaking out under high pressure. At least part of the cooling pipe 3 is arranged in the template 2. During the injection molding process, the cooling water enters the water inlet channel 21 of the template 2 through the water pump, and then enters the cooling pipe 3 from the water inlet hole of the cooling pipe 3 into the interior of the mold core 1. After passing through the cooling pipe 3, the cooling water overflows into the cooling cavity 11, absorbs the heat inside the mold core 1, and plays a cooling role on the mold core 1. Finally, the cooling water flows out after flowing through the water outlet channel 23. In the actual cooling process, the cooling water flows under high pressure, so that the temperatures of the template 2 and the mold core 1 are reduced, the thermal deformation of the mold core 1 is stable and uniform, the product does not deform or warp, and the dimensions of the product will also stabilize, and various aspects such as concentricity, flatness, and roundness are well improved. (2) The injection mold of the present utility model reduces the temperature of the mold core 1 during injection molding, improves the thermal deformation of the mold core 1 during injection molding, and thus improves the dimensions and external structure of the product.

[0055] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. All equivalent transformations made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, are equally included in the patent protection scope of the present utility model.

Claims

1. An injection mold, characterized in that, It includes a template and a core mold disposed on the template. A cooling cavity is formed in the core mold. A connection channel, a water inlet channel, and a water outlet channel are provided in the template. The connection channel is communicated with the water outlet channel. The cooling cavity penetrates through the core mold and is connected to the connection channel in a through manner. Further, a cooling pipe is included. One end of the cooling pipe is clamped on the template, and the other end passes through the connection channel and extends into the cooling cavity. The cooling pipe is also provided with a water inlet and a water outlet. The water inlet is communicated with the water inlet channel, and the water outlet is communicated with the cooling cavity.

2. The injection mold according to claim 1, characterized in that, The cooling pipe includes a pipe seat and a pipe body connected to each other. The pipe seat is clamped in the end of the connection channel away from the core mold, and at least part of the pipe body passes through the connection channel and extends into the cooling cavity.

3. The injection mold according to claim 2, wherein, The pipe seat includes a fixing seat and a connecting seat connected to each other. The water inlet is located on the connecting seat.

4. The injection mold according to claim 2, characterized in that, Both ends of the pipe body are provided with openings. One opening of the pipe body is connected to the water inlet, and the other opening is the water outlet.

5. The injection mold according to claim 1, wherein A waterproof ring is further included. An annular groove is provided on the template, and the waterproof ring is located in the annular groove.

6. The injection mold according to claim 1, characterized in that, Both the water inlet channel and the water outlet channel are arranged on the outer periphery of the connection channel, and the extending direction of the connection channel is arranged at an angle with the extending directions of the water inlet channel and the water outlet channel.

7. The injection mold according to claim 1, characterized in that, The cross-sectional radius of the cooling cavity is smaller than the cross-sectional radius of the connection channel, and the cross-sectional radius of the cooling cavity is larger than the cross-sectional radius of the cooling pipe.

8. The injection mold according to claim 1, characterized in that, The position of the water outlet channel in the vertical height direction of the template is higher than that of the water inlet channel.

9. The injection mold according to claim 1, wherein, The cooling cavity is coaxially arranged with the connection channel.

10. The injection mold according to claim 1, wherein, The cooling cavity extends along the central axis direction of the core mold.

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