Injection mold with built-in cooling mechanism

Abstract

The utility model discloses an injection mold with a built-in cooling mechanism, which comprises a mold body, the mold body is provided with the cooling mechanism, and the cooling mechanism comprises an injection mold, a water inlet hole, a water outlet hole, a cooling channel and a flow control mechanism, the flow control mechanism comprises a water inlet pipe, an outer sleeve, an adjusting sleeve, a transmission rod, a transmission sleeve, a connecting sleeve, an inner sleeve, an elastic piece, an abutting ring, a threaded sleeve, a threaded groove and a positioning mechanism, the water inlet pipe is installed on the outer sides of the multiple sets of water inlet holes, the outer sleeve is connected to the top ends of the multiple sets of water inlet pipes, and the adjusting sleeve is rotationally connected to the top end of the outer sleeve; through cooperative work of a water inlet pipe, an outer sleeve, an adjusting sleeve, a transmission rod and other assemblies in the flow control mechanism, through transmission cooperation of the transmission sleeve and a connecting sleeve and threaded connection of an inner sleeve and a threaded sleeve, accurate adjustment of a gap between an elastic piece and an abutting ring is achieved, and therefore the flow of cooling liquid can be flexibly controlled.

Description

Technical Field

[0001] This utility model relates to the field of plastic products technology, and more specifically, it relates to an injection mold with a built-in cooling mechanism. Background Technology

[0002] In the field of plastic product injection molding, the cooling effect of the mold directly affects the molding quality and production efficiency of the product. Due to the different structural characteristics and material properties of different products, it is necessary to be able to flexibly adjust the flow rate of coolant according to actual production needs to ensure uniform temperature in all parts of the mold and avoid quality problems such as warping and deformation of the product.

[0003] However, most common injection mold cooling systems on the market currently adopt a fixed pipeline design, and the flow rate of the coolant is mainly controlled by external valves. This method is not only not precise enough, but also makes it difficult to independently control the flow rate of different areas inside the mold. Especially when producing precision parts with high process requirements, the inability to accurately adjust the flow rate of the coolant can easily lead to uneven cooling of different parts of the mold, affecting the dimensional accuracy and surface quality of the product. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides an injection mold with a built-in cooling mechanism to solve the technical problem of independent flow control in different areas inside the mold mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an injection mold with a built-in cooling mechanism, comprising a mold body, wherein a cooling mechanism is provided on the mold body, the cooling mechanism comprising an injection mold, water inlets, water outlets, cooling channels, and a flow control mechanism, the injection mold being disposed within the mold body, multiple sets of water inlets distributed on the outer side of the mold body, multiple sets of water outlets distributed on the outer wall of the mold body, the cooling channels being disposed within the injection mold and respectively connected to multiple sets of water inlets and water outlets, and the flow control mechanism comprising a water inlet pipe, an outer sleeve, an adjusting sleeve, a transmission rod, a transmission sleeve, and a connecting... The system comprises an inner sleeve, an elastic sheet, an abutment ring, a threaded sleeve, a threaded groove, and a positioning mechanism. The water inlet pipe is installed on the outside of multiple sets of water inlet holes. The outer sleeve is connected to the top of the multiple sets of water inlet pipes. An adjusting sleeve is rotatably connected to the top of the outer sleeve. A transmission rod is installed inside the adjusting sleeve, and the transmission sleeve slides on the outer wall of the transmission rod. A connecting sleeve is fixed to the outside of the transmission sleeve. The inner sleeve is rotatably installed on the outer wall of the connecting sleeve. Multiple sets of elastic sheets are installed at the bottom of the connecting sleeve. The abutment ring is located at the bottom of the outer sleeve and abuts against the outer wall of the multiple sets of elastic sheets. A threaded sleeve is located on the inner wall of the outer sleeve, and a threaded groove is located on the inner side of the inner sleeve and is threadedly connected to the threaded sleeve.

[0008] The present invention is further configured such that the positioning mechanism includes an installation ring, a limiting block, a limiting groove, a return spring, a limiting sleeve, a locking sleeve, a push rod, a rotating sleeve, a locking sleeve, and an unlocking hole. The installation ring is disposed on the outer wall of the outer sleeve. Multiple sets of limiting blocks are disposed and slide on the installation ring. Multiple sets of limiting grooves are disposed on the outer wall of the adjusting sleeve. The return spring is disposed on the outer wall of the multiple sets of limiting blocks and connected to the inner wall of the installation ring. The limiting sleeve slides on the outer side of the outer sleeve. The locking sleeve abuts against the bottom surface of the limiting sleeve. Multiple sets of push rods are disposed on the bottom surface of the locking sleeve. The rotating sleeve rotates on the outer wall of the outer sleeve. The locking sleeve is fixed on the top surface of the rotating sleeve. Multiple sets of unlocking holes are disposed on the locking sleeve.

[0009] The present invention is further configured such that the transmission rod is polygonal and slidably connected to the transmission sleeve. The sliding cooperation between the polygonal transmission rod and the transmission sleeve can prevent the transmission rod from slipping during rotation and ensure the accuracy of transmission.

[0010] The present invention is further configured such that the outer wall of the inner sleeve is polygonal and slidably connected to the inner wall of the outer sleeve. Through the sliding cooperation between the polygonal inner sleeve and the inner wall of the outer sleeve, the inner sleeve can be prevented from rotating during movement, thus ensuring the stability of the movement.

[0011] The present invention is further provided that the inner side of the abutment ring is provided with a rounded corner. By providing a rounded corner on the inner side of the abutment ring, stress concentration when in contact with the elastic sheet can be reduced, and the service life of the component can be extended.

[0012] The present invention is further provided that a limiting block is installed at the bottom end of the transmission rod. By setting the limiting block at the bottom end of the transmission rod, the transmission rod can be prevented from leaving the predetermined position during movement, thereby improving the safety of operation.

[0013] The present invention is further provided that the outer wall of the outer sleeve is provided with guide strips, and multiple sets of guide strips are provided and slidably connected with the limiting sleeve. Through the sliding cooperation between the guide strips and the limiting sleeve, it can be ensured that the limiting sleeve maintains linear movement during the movement, thereby improving the positioning accuracy.

[0014] The present invention is further provided that the bottom surface of the locking sleeve is provided with a push spring, and multiple sets of push springs are provided with their bottom ends abutting against the locking sleeve. Through the elastic action of the push spring, a stable contact pressure can be maintained between the locking sleeve and the locking sleeve, thereby improving the locking effect.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides an injection mold with a built-in cooling mechanism, which has the following beneficial effects:

[0017] 1. By setting a cooling mechanism inside the mold body, the cooling channels inside the injection mold, together with the water inlet and outlet holes, form a complete cooling circulation system, thereby realizing the basic cooling function of the mold.

[0018] 2. By employing the coordinated operation of components such as the water inlet pipe, outer sleeve, adjusting sleeve, and transmission rod in the flow control mechanism, and through the transmission cooperation between the transmission sleeve and the connecting sleeve, as well as the threaded connection between the inner sleeve and the threaded sleeve, the gap between the elastic plate and the abutment ring can be precisely adjusted, thereby enabling flexible control of the coolant flow rate.

[0019] 3. The positioning mechanism, through the cooperation of the mounting ring, limiting block, and limiting groove, combined with the elastic action of the return spring, and the linkage design of the limiting sleeve, locking sleeve, push rod, rotating sleeve, locking sleeve, and unlocking hole, not only achieves precise locking of the adjusting sleeve position, but also ensures the stability and reliability of the locking state through the elastic action of the push spring. The overall design not only meets the requirements for precise adjustment of coolant flow, but also improves the convenience of adjustment operation and the reliability of locking, significantly improving the cooling effect and performance of the injection mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an injection mold with a built-in cooling mechanism according to the present invention.

[0021] Figure 2 This is a cross-sectional view of the cooling channel in this utility model;

[0022] Figure 3 This is a cross-sectional view of the flow control mechanism in this utility model.

[0023] Figure 4 This is a cross-sectional view of the outer sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the inner sleeve in this utility model.

[0025] In the diagram: 1. Mold body; 2. Injection mold; 3. Water inlet; 4. Water outlet; 5. Cooling channel; 6. Water inlet pipe; 7. Outer sleeve; 8. Adjusting sleeve; 9. Transmission rod; 10. Transmission sleeve; 11. Connecting sleeve; 12. Inner sleeve; 13. Elastic sheet; 14. Abutment ring; 15. Threaded sleeve; 16. Threaded groove; 17. Mounting ring; 18. Limiting block; 19. Limiting groove; 20. Return spring; 21. Limiting sleeve; 22. Locking sleeve; 23. Ejector rod; 24. Rotating sleeve; 25. Locking sleeve; 26. Unlocking hole; 27. Restricting block; 28. Guide bar; 29. ​​Push spring. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 An injection mold with a built-in cooling mechanism includes a mold body 1, on which a cooling mechanism is provided. The cooling mechanism includes an injection mold 2, water inlets 3, water outlets 4, cooling channels 5, and a flow control mechanism. The injection mold 2 is disposed inside the mold body 1. Multiple sets of water inlets 3 are distributed on the outside of the mold body 1, and multiple sets of water outlets 4 are distributed on the outer wall of the mold body 1. The cooling channels 5 are disposed inside the injection mold 2 and are respectively connected to the multiple sets of water inlets 3 and water outlets 4. The flow control mechanism includes a water inlet pipe 6, an outer sleeve 7, an adjusting sleeve 8, a transmission rod 9, a transmission sleeve 10, a connecting sleeve 11, an inner sleeve 12, an elastic sheet 13, an abutment ring 14, and a threaded sleeve 15. 5. Threaded groove 16 and positioning mechanism: Water inlet pipe 6 is installed on the outside of multiple sets of water inlet holes 3; outer sleeve 7 is connected to the top of multiple sets of water inlet pipe 6; adjusting sleeve 8 is rotatably connected to the top of outer sleeve 7; transmission rod 9 is installed inside adjusting sleeve 8; transmission sleeve 10 slides on the outer wall of transmission rod 9; connecting sleeve 11 is fixed on the outside of transmission sleeve 10; inner sleeve 12 is rotatably installed on the outer wall of connecting sleeve 11; elastic sheet 13 is provided in multiple sets and installed at the bottom of connecting sleeve 11; abutting ring 14 is provided at the bottom of outer sleeve 7 and abuts against the outer wall of multiple sets of elastic sheet 13; threaded sleeve 15 is provided on the inner wall of outer sleeve 7; threaded groove 16 is provided on the inner side of inner sleeve 12 and threadedly connected to threaded sleeve 15.

[0030] The positioning mechanism includes an installation ring 17, a limiting block 18, a limiting groove 19, a return spring 20, a limiting sleeve 21, a locking sleeve 22, a push rod 23, a rotating sleeve 24, a locking sleeve 25, and an unlocking hole 26. The installation ring 17 is located on the outer wall of the outer sleeve 7. Multiple sets of limiting blocks 18 are provided and slide on the installation ring 17. Multiple sets of limiting grooves 19 are provided and distributed on the outer wall of the adjusting sleeve 8. The return spring 20 is installed on the outer wall of multiple sets of limiting blocks 18 and connected to the inner wall of the installation ring 17. The limiting sleeve 21 slides on the outer side of the outer sleeve 7. The locking sleeve 22 abuts against the bottom surface of the limiting sleeve 21. Multiple sets of push rods 23 are provided and distributed on the bottom surface of the locking sleeve 22. The rotating sleeve 24 rotates on the outer wall of the outer sleeve 7. The locking sleeve 25 is fixed on the top surface of the rotating sleeve 24. Multiple sets of unlocking holes 26 are provided and distributed on the locking sleeve 25.

[0031] The transmission rod 9 is configured as a polygon and is slidably connected to the transmission sleeve 10. When the polygonal transmission rod 9 slides inside the transmission sleeve 10, its cross-section is polygonal, which can prevent relative sliding of the transmission rod 9 during rotation.

[0032] The outer wall of the inner sleeve 12 is set as a polygon and is slidably connected to the inner wall of the outer sleeve 7. When the polygonal inner sleeve 12 slides inside the outer sleeve 7, since its outer wall is polygonal, it can ensure that the inner sleeve 12 can only move axially and will not rotate.

[0033] The inner side of the abutment ring 14 is provided with rounded corners. When the elastic sheet 13 contacts the abutment ring 14, the rounded corner design can reduce stress concentration and avoid excessive wear of the elastic sheet 13.

[0034] A limiting block 27 is installed at the bottom of the transmission rod 9. The limiting block 27 can prevent the transmission rod 9 from exceeding the predetermined range when moving axially, and plays a limiting protection role.

[0035] The outer wall of the outer sleeve 7 is provided with guide strips 28. Multiple sets of guide strips 28 are provided and are slidably connected to the limiting sleeve 21. The guide strips 28 form a sliding guide rail inside the limiting sleeve 21 to ensure that the limiting sleeve 21 can only move along a predetermined trajectory.

[0036] The bottom surface of the locking sleeve 22 is provided with a push spring 29. Multiple sets of push springs 29 are provided and their bottom ends abut against the locking sleeve 25. The push springs 29 use elastic force to keep the locking sleeve 22 and the locking sleeve 25 in a pre-tight state, ensuring the reliability of the locking mechanism.

[0037] In this embodiment, the adjusting sleeve 8 is connected to an external water supply pipe, and the water outlet 4 is connected to an external circulation device. Coolant is delivered to the cooling channel 5 through the water inlet pipe 6 and the metal hole to cool the mold, and then discharged through the water outlet 4. When it is necessary to adjust the flow rate of the coolant, rotating the rotating sleeve 24 drives the locking sleeve 25 to rotate, causing multiple sets of unlocking holes 26 to move below the push rod 23, causing multiple sets of abutments to release their contact with the locking sleeve 22, pushing the limiting sleeve 21 and the locking sleeve 22 so that the push rod 23 slides in the unlocking hole 26 and squeezes the push spring 29, while limiting the movement. The sleeve 21 releases its contact with the multiple sets of limiting blocks 18. The multiple sets of reset springs 20 reset and pull the limiting blocks 18 away from the limiting grooves 19 to release the limiting of the adjusting sleeve 8. Then, the adjusting sleeve 8 is rotated to drive the transmission rod 9 to rotate. The transmission rod 9 drives the transmission sleeve 10 to rotate and engages with the threaded sleeve 15 through the threaded groove 16. This causes the connecting sleeve 11 and the inner sleeve 12 to slide along the inner wall of the outer sleeve 7. The connecting sleeve 11 drives the multiple sets of elastic plates 13 to abut against the inner wall of the abutting ring 14, thereby changing the coolant flow gap between the multiple sets of elastic plates 13 and thus changing the coolant flow rate.

[0038] More specifically, after adjustment, multiple sets of push springs 29 push the locking sleeve 22, thereby pushing the limiting sleeve 21 to abut against the top of multiple sets of limiting blocks 18. The locking sleeve 22 drives the push rod 23 to disengage from the unlocking hole 26. Then, the rotating sleeve 24 rotates and drives the locking sleeve 25 to move the multiple sets of unlocking holes 26 away from the push rod 23. At this time, the multiple sets of push rods 23 abut against the top surface of the locking sleeve 25, and the locking sleeve 22 locks the limiting sleeve 21. At the same time, the bottom ends of the multiple sets of limiting blocks 18 are engaged in the limiting groove 19 and stretch the multiple sets of return springs 20 respectively, thus completing the positioning of the adjusting sleeve 8.

[0039] In summary, during the use or operation of the overall equipment: the adjusting sleeve 8 is connected to the external water supply pipe, and the water outlet 4 is connected to the external circulation device. The coolant is delivered to the cooling channel 5 through the water inlet pipe 6 and the metal hole to cool the mold, and then discharged through the water outlet 4. When it is necessary to adjust the flow rate of the coolant, rotating the rotating sleeve 24 drives the locking sleeve 25 to rotate, causing multiple sets of unlocking holes 26 to move below the push rod 23, causing multiple sets of abutments to release their contact with the locking sleeve 22, pushing the limiting sleeve 21 and the locking sleeve 22 so that the push rod 23 slides in the unlocking hole 26 and squeezes the push spring 29. At the same time, the limiting sleeve 21 releases its contact with the multiple sets of limiting blocks 18, and the multiple sets of reset springs 20 reset and pull the limiting blocks 18 away from the limiting groove 19 to release the limiting of the adjusting sleeve 8. Then, the adjusting sleeve 8 is rotated to drive the transmission rod 9 to rotate, and the transmission rod 9 drives the transmission sleeve 10 to rotate and engages with the threaded sleeve 15 through the threaded groove 16, thereby driving the connecting sleeve 11 and the inner sleeve 12 to slide along the inner wall of the outer sleeve 7. The connecting sleeve 11 drives the multiple sets of elastic plates 13 to abut against the inner wall of the abutting ring 14, thereby changing the coolant flow gap between the multiple sets of elastic plates 13, thereby changing the coolant flow rate.

[0040] After adjustment, multiple sets of push springs 29 push the locking sleeve 22, thereby pushing the limiting sleeve 21 to abut against the top of multiple sets of limiting blocks 18. The locking sleeve 22 drives the push rod 23 to disengage from the unlocking hole 26. Then, the rotating sleeve 24 rotates and drives the locking sleeve 25 to move the multiple sets of unlocking holes 26 away from the push rod 23. At this time, the multiple sets of push rods 23 abut against the top surface of the locking sleeve 25, and the locking sleeve 22 locks the limiting sleeve 21. At the same time, the bottom ends of the multiple sets of limiting blocks 18 are engaged in the limiting groove 19 and stretch the multiple sets of return springs 20 respectively, thus completing the positioning of the adjusting sleeve 8.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An injection mold with built-in cooling mechanism comprising a mold body (1), characterized in that: The mold body (1) is provided with a cooling mechanism, the cooling mechanism comprises an injection mold (2), water inlet holes (3), water outlet holes (4), cooling channels (5) and flow control mechanisms, the injection mold (2) is arranged in the mold body (1), the water inlet holes (3) are provided with a plurality of groups distributed on the outside of the mold body (1), the water outlet holes (4) are provided with a plurality of groups distributed on the outer wall of the mold body (1), the cooling channels (5) are arranged in the injection mold (2) and are connected with the plurality of water inlet holes (3) and water outlet holes (4) respectively, the flow control mechanism comprises a water inlet pipe (6), an outer sleeve (7), an adjusting sleeve (8), a transmission rod (9), a transmission sleeve (10), a connecting sleeve (11), an inner sleeve (12), an elastic sheet (13), an abutment ring (14), a threaded sleeve (15), a threaded groove (16) and a positioning mechanism, the water inlet pipe (6) is installed on the outside of the plurality of water inlet holes (3), the outer sleeve (7) is connected at the top of the plurality of water inlet pipes (6), the adjusting sleeve (8) is rotatably connected at the top of the outer sleeve (7), the transmission rod (9) is installed in the adjusting sleeve (8), the transmission sleeve (10) slides on the outer wall of the transmission rod (9), the connecting sleeve (11) is fixed on the outside of the transmission sleeve (10), the inner sleeve (12) is rotatably installed on the outer wall of the connecting sleeve (11), the elastic sheet (13) is provided with a plurality of groups installed at the bottom of the connecting sleeve (11), the abutment ring (14) is arranged at the bottom of the outer sleeve (7) and abuts against the outer wall of the plurality of elastic sheets (13), the threaded sleeve (15) is arranged on the inner wall of the outer sleeve (7), and the threaded groove (16) is arranged on the inner side of the inner sleeve (12) and is in threaded connection with the threaded sleeve (15).

2. An injection mold with a built-in cooling mechanism according to claim 1, characterized in that: The positioning mechanism comprises a mounting ring (17), a limiting block (18), a limiting groove (19), a reset spring (20), a limiting sleeve (21), a lock sleeve (22), a jacking rod (23), a rotating sleeve (24), a locking sleeve (25) and an unlocking hole (26), the mounting ring (17) is arranged on the outer wall of the outer sleeve (7), the limiting block (18) is provided with a plurality of groups and slides on the mounting ring (17), the limiting groove (19) is provided with a plurality of groups and is distributed on the outer wall of the adjusting sleeve (8), the reset spring (20) is installed on the outer wall of the plurality of limiting blocks (18) and is connected with the inner wall of the mounting ring (17), the limiting sleeve (21) slides on the outside of the outer sleeve (7), the lock sleeve (22) abuts against the bottom surface of the limiting sleeve (21), the jacking rod (23) is provided with a plurality of groups and is distributed on the bottom surface of the lock sleeve (22), the rotating sleeve (24) rotates on the outer wall of the outer sleeve (7), the locking sleeve (25) is fixed on the top surface of the rotating sleeve (24), and the unlocking hole (26) is provided with a plurality of groups and is distributed on the locking sleeve (25).

3. An injection mold with a built-in cooling mechanism according to claim 2, characterized in that: The transmission rod (9) is provided as a polygon and is in sliding connection with the transmission sleeve (10).

4. An injection mold with a built-in cooling mechanism according to claim 3, characterized in that: The outer wall of the inner sleeve (12) is provided as a polygon and is in sliding connection with the inner wall of the outer sleeve (7).

5. An injection mold with a built-in cooling mechanism according to claim 4, characterized in that: The inner side of the abutment ring (14) is provided with a fillet.

6. An injection mold with a built-in cooling mechanism according to claim 5, characterized in that: The bottom end of the transmission rod (9) is provided with a limiting block (27).

7. An injection mold with a built-in cooling mechanism according to claim 6, characterized in that: The outer wall of the outer sleeve (7) is provided with a guide strip (28), and the guide strip (28) is provided with a plurality of groups and is in sliding connection with the limiting sleeve (21).

8. An injection mold with a built-in cooling mechanism according to claim 7, characterized in that: The bottom surface of the lock sleeve (22) is provided with push springs (29), and the push springs (29) are provided with multiple groups and abut against the lock sleeve (25) at the bottom end.

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