Injection molding mold
By introducing a vibration mechanism into the injection mold, the problem of difficult demolding of plastic products was solved, a more uniform temperature distribution was achieved, the molding quality of plastics during the demolding process was improved, and the scrap rate of injection molded parts was reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-10
- Publication Date
- 2026-05-15
AI Technical Summary
Existing injection molds have problems such as difficulty in removing plastic products during demolding and easy damage, and the failure rate of injection molded parts is relatively high.
An injection molding mold is used, which includes a molding cylinder, a guide cylinder, a slider, a forming cylinder and an auxiliary mechanism. The vibration block vibrates the outer wall of the molding cylinder to promote uniform distribution of melt temperature, reduce demolding resistance, and improve demolding effect through alternating vibration mode and multi-dimensional vibration control.
It effectively prevents plastic products from warping, deforming or cracking during cooling, reduces demolding resistance, reduces product damage, improves demolding efficiency, enhances weld line strength, and reduces surface defects.
Smart Images
Figure CN122034259A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of injection molding technology, and more specifically to an injection molding die. Background Technology
[0002] Injection molding, also known as injection molding, is based on the principle of adding plastic raw materials to an injection molding machine, heating and melting them, and then injecting them into a mold through the nozzle of the injection machine. After cooling and solidification, the molded product is obtained. Currently, when the upper mold body is pushed by the hydraulic cylinder of the injection mold, the splicing between the upper mold body and the lower mold body often becomes misaligned due to shaking, which leads to the failure of injection molding and results in a high scrap rate.
[0003] To address the aforementioned issues, Chinese Patent Publication No. CN222223291U discloses a metal injection mold, comprising a base, a support rod fixedly connected to the top of the base, a top plate fixedly connected to the top of the support rod, an electric telescopic rod fixedly connected to the top of the top plate, a push rod fixedly connected to the bottom of the electric telescopic rod, and an upper mold body fixedly connected to the bottom of the push rod. An injection mold body is mounted on the top of the base. A sliding groove is formed inside the base, and a motor is fixedly connected to the outside of the base. A lead screw is fixedly connected to the output end of the motor, and a collar is threaded onto the outside of the lead screw. This device maintains the stability of the upper mold body by allowing the stabilizing collar to slide on the outside of the support rod when the upper mold body moves up and down, preventing wobbling and thus improving the efficiency of plastic injection molding.
[0004] The above-mentioned device has the following problems in actual use: After the material cools down, it is necessary to separate the upper mold body from the injection mold and then take out the molded plastic product. However, the plastic product is usually embedded in the lower mold, which is inconvenient to take out. Moreover, the completed mold is easily damaged during the demolding process, which poses certain quality risks. Summary of the Invention
[0005] This invention provides an injection molding die to solve the problem of poor demolding effect when demolding plastic products molded by existing injection molding devices.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an injection molding mold, comprising a mold cylinder with a through hole, and further comprising a forming cylinder, a guide cylinder, a slider, a forming cylinder, auxiliary mechanisms symmetrically arranged on both sides of the through hole, a material guiding mechanism for introducing plastic into the forming cylinder, and a driving mechanism for driving the slider to reciprocate along the length direction of the guide cylinder; the forming cylinder is fixedly connected to the through hole; the guide cylinder is fixedly connected to the outer wall of the mold cylinder; the slider is slidably connected to the guide cylinder; the forming cylinder is fixedly connected to the slider, and the forming cylinder can slide in and out of the forming cylinder; the auxiliary mechanism includes a base block, a vibrating block, a moving block, and a power component for driving the moving block to reciprocate along the length direction of the base block; the base block is fixedly connected to the mold cylinder; the vibrating block is slidably connected to the base block, and the outer wall of the forming cylinder is located on the movement trajectory of the vibrating block; the moving block is fixedly connected to the vibrating block.
[0007] The principle and advantages of this scheme are: Plastic is fed into the molding cylinder by a feeding mechanism, and then cooled and formed in the mold groove between the molding cylinder and the molding cylinder through the cooperation between the molding cylinder and the molding cylinder.
[0008] By vibrating the outer wall of the molding cylinder with a vibrating block, the temperature distribution of the melt in the mold tank can be made more uniform, reducing the thermal stress caused by local temperature differences. This helps to prevent problems such as warping, deformation or cracking of plastic products during the cooling process.
[0009] Furthermore, vibration can reduce the friction between the molded plastic product and the mold tank, thereby reducing demolding resistance and avoiding product damage caused by direct ejection. At the same time, vibration helps the molten plastic flow more evenly in the mold tank, improves the fusion state of different melt flow fronts, enhances weld line strength, and reduces surface defects such as silver streaks and bubbles.
[0010] Furthermore, it also includes auxiliary components; the auxiliary components include a wall cylinder, a movable block, an auxiliary cylinder, auxiliary parts symmetrically arranged on both sides of the auxiliary cylinder along the length direction of the movable block, and a drive part for driving the movable block to reciprocate along the length direction of the wall cylinder; the wall cylinder is fixedly connected to the mold cylinder; the movable block is slidably connected to the wall cylinder, and the movement direction of the movable block is opposite to the movement direction of the movable block; the auxiliary cylinder is fixedly connected to the movable block; the auxiliary part includes several side vibration block groups; the side vibration block groups are connected to the auxiliary cylinder, and the outer wall of the molding cylinder is located on the movement trajectory of the side vibration block groups.
[0011] The alternating vibrations between the side vibrators create a more uniform and continuous dynamic excitation on the forming cylinder, effectively improving the energy transfer efficiency and avoiding stress concentration problems that may occur with traditional single-point or synchronous vibrations. This alternating vibration mode offers the following combined advantages: First, the side and central vibrating blocks move alternately to form wave-like vibration propagation, which makes the circumferential force on the plastic cylinder more uniform and significantly reduces the risk of deformation or ejection and tilting of plastic products due to local over-vibration or under-vibration. Secondly, alternating vibration promotes microcirculation of the melt near the mold wall, enhances heat transfer efficiency, and makes the temperature gradient during cooling more gradual. Compared with single vibration, it is more effective in suppressing the accumulation of internal stress caused by uneven cooling, thereby reducing the tendency of plastic products to warp after demolding.
[0012] Furthermore, the auxiliary part also includes a bidirectional screw, several auxiliary units, a sliding hole on the auxiliary cylinder, a guide hole on the auxiliary cylinder, and a power unit for driving the bidirectional screw to rotate; the bidirectional screw is rotatably connected to the auxiliary cylinder; the auxiliary unit includes a nut seat and a fixing block; the nut seat is threadedly connected to the bidirectional screw, and the nut seat is slidably connected to the guide hole; the fixing block is fixedly connected to the nut seat; the side vibrating block assembly includes a first side vibrating block and a second side vibrating block; the first side vibrating block is connected to the fixing block; the second side vibrating block is connected to the sliding hole.
[0013] During injection molding, the position of the first side vibrator can be adjusted relative to the second side vibrator, meaning that the spatial layout of the vibration application point is dynamically adjustable, which can change the propagation and interference mode of the vibration wave in the molding cylinder. By constructing a favorable wave crest superposition area, a stronger micro-amplitude vibration force field can be formed in a specific area, significantly improving the demolding driving force in that area, which is especially beneficial for the smooth ejection of molded plastic products with deep cavities or large clamping forces.
[0014] At the same time, by combining position adjustment and alternating vibration timing, the direction of melt microflow can be dynamically guided, promoting heat diffusion in hot spots, further alleviating local overheating problems, and improving overall cooling uniformity.
[0015] Furthermore, the auxiliary unit also includes auxiliary components; the auxiliary components include a vertical block, an arc-shaped block, a semi-circular block, a spring, and a groove on the fixed block; the vertical block is slidably connected to the groove, and the first side vibrating block is fixedly connected to the vertical block; the arc-shaped block is fixedly connected to the vertical block; the semi-circular block is fixedly connected to the inner wall of the auxiliary cylinder, and the semi-circular block is located on the movement trajectory of the arc-shaped block; the two ends of the spring are respectively connected to the vertical block and the groove.
[0016] By allowing simultaneous lateral and vertical position adjustment of the first side vibrator, its vibration effect on the outer wall of the forming cylinder becomes omnidirectionally adjustable in space, significantly enhancing the flexibility and precision of the vibration field. This ensures that the vibration energy effectively covers the traditional blind zone, reduces energy attenuation, and improves the overall vibration response intensity, thereby further improving the vibration efficiency of the first side vibrator.
[0017] Furthermore, the auxiliary unit also includes a push block, an auxiliary shaft, and a swing block; the push block is threadedly connected to the bidirectional screw and slidably connected to the guide hole; the auxiliary shaft is rotatably connected to the inner wall of the auxiliary cylinder; the swing block is fixedly connected to the auxiliary shaft, and the second side vibrating block is fixedly connected to the swing block; the swing block is located between the push block and the nut seat, and the swing block is located on the movement trajectory of the push block and the nut seat.
[0018] The interaction between the push block and the nut seat allows the swing block to oscillate and adjusts the tilt angle of the second side vibrating block. Therefore, by adjusting the tilt angle of the second side vibrating block, the propagation direction of the vibration wave in the molded cylinder wall can be changed, making it more perpendicular to the critical demolding area or directionally transmitted along the stress concentration zone, reducing energy scattering and significantly improving the effective transmission efficiency of vibration energy.
[0019] Furthermore, the push block is provided with a wedge surface; the distance between the wedge surface and the swing block gradually increases along the length direction of the auxiliary cylinder; the distance between the nut seat and the swing block gradually decreases along the length direction of the auxiliary cylinder.
[0020] As the spacing between the first side vibrating blocks gradually increases, the limitations of traditional symmetrical or equidistant configurations are broken, allowing the vibration force to exhibit a gradient distribution on the outer wall of the forming cylinder. The interference mode of the vibration wave transitions from dense to sparse, which can form a progressive demolding driving force in the axial direction of the forming cylinder, thereby avoiding skewing or jamming caused by instantaneous full-circumference release and significantly improving the smoothness of the ejection process.
[0021] Furthermore, it also includes a linkage unit; the linkage unit includes a linkage shaft, linkage units symmetrically arranged on both sides of the linkage shaft, and a motion unit for driving the linkage shaft to rotate; the linkage shaft is rotatably connected to the bottom block; the linkage unit includes several linkage components; the linkage components include several wall vibration blocks equidistantly arranged along the circumferential direction of the linkage shaft; the wall vibration blocks are fixedly connected to the linkage shaft, and the outer wall of the shaping cylinder is located on the motion trajectory of the wall vibration blocks.
[0022] By rotating the wall-mounted vibration block, the contact point between it and the outer wall of the molding cylinder continuously changes, forming a "scanning" vibration excitation. This effectively covers areas that are difficult to reach with traditional fixed vibration blocks, significantly reducing vibration attenuation and energy blind spots, and improving the overall uniformity of vibration transmission.
[0023] Furthermore, the drive unit includes a side block, a drive shaft, a first rack, a first gear, a groove on the vibrating block, and a side hole on the groove; the side block is fixedly connected to the bottom block; the drive shaft passes through the side hole and is rotatably connected to the side block; the first rack is fixedly connected to the groove; the first gear is fixedly connected to the drive shaft, and the first gear meshes with the first rack; the movable block is a second rack; the second rack meshes with the first gear.
[0024] During the synchronous movement of the first rack with the vibrating block, the first rack meshes with the first gear, thereby driving the first gear to rotate. During the rotation of the first gear, it meshes with the second rack, thereby driving the second rack to reciprocate along the length of the wall cylinder.
[0025] Furthermore, the power unit includes a second gear and a third rack; the second gear is fixedly connected to a bidirectional screw; the third rack is fixedly connected to a side block, the third rack is located on the motion trajectory of the second gear, and the third rack can mesh with the second gear.
[0026] Through the meshing of the second gear and the third rack, the second gear can drive the bidirectional screw to rotate.
[0027] Furthermore, the motion unit is a belt; the two ends of the belt are respectively fitted onto the drive shaft and the linkage shaft.
[0028] During the rotation of the drive shaft, the drive shaft drives the linkage shaft to rotate synchronously via a belt. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of an embodiment of an injection molding mold according to the present invention.
[0030] Figure 2 for Figure 1 A schematic diagram of the internal structure of the middle mold cylinder from the rear view.
[0031] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0032] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0033] Figure 5 for Figure 2 A schematic diagram of the internal structure of a portion of the auxiliary cylinder.
[0034] Figure 6 for Figure 5 Enlarged view of point C in the middle. Detailed Implementation
[0035] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: mold cylinder 1, shaping cylinder 2, guide cylinder 3, slider 4, forming cylinder 5, bottom block 6, vibrating block 7, moving block 8, cylinder 9, guide cylinder 10, motor box 11, guide hopper 12, wall cylinder 13, movable block 14, auxiliary cylinder 15, bidirectional screw 16, nut seat 17, fixed block 18, first side vibrating block 19, second side vibrating block 20, slider 21, arc block 22, semi-circular block 23, push block 24, side hole 25, swing block 26, linkage shaft 27, wall vibrating block 28, side block 29, first rack 30, first gear 31, second gear 32, third rack 33, belt 34, drive shaft 35.
[0036] The basic implementation examples are as follows: Figure 1 , 2 As shown in points 3, 4, 5, and 6: An embodiment of the present invention provides an injection molding die, comprising a mold cylinder 1 with a through hole, and further including a shaping cylinder 2, a guide cylinder 3, a slider 4, a molding cylinder 5, auxiliary mechanisms symmetrically arranged on both sides of the through hole, a material guiding mechanism for introducing plastic into the shaping cylinder 2, and a driving mechanism for driving the slider 4 to reciprocate along the length direction of the guide cylinder 3; the shaping cylinder 2 is fixedly connected to the through hole; there are two guide cylinders 3, which are symmetrically arranged on both sides of the shaping cylinder 2; the guide cylinders 3 are fixedly connected to the outer wall of the mold cylinder 1; the slider 4 is slidably connected to the guide cylinder 3; the molding cylinder 5 is fixedly connected to the slider 4, and the molding cylinder 5 can slide in and out of the shaping cylinder 2; the auxiliary mechanism is located inside the mold cylinder 1; the auxiliary mechanism includes a base block 6, a vibrating block 7, a moving block 8, and a power component for driving the moving block 8 to reciprocate along the length direction of the base block 6; the base block 6 is fixedly connected to the inner wall of the mold cylinder 1; the vibrating block 7 is slidably connected to the base block 6, and the outer wall of the shaping cylinder 2 is located on the movement trajectory of the vibrating block 7; the moving block 8 is fixedly connected to the vibrating block 7.
[0037] The power unit is cylinder 9; cylinder 9 is fixedly connected to the inner wall of the mold cylinder 1, and the output shaft of cylinder 9 is fixedly connected to the moving block 8.
[0038] The drive mechanism includes a servo motor, a one-way screw, and a drive hole on the guide cylinder 3; the servo motor is fixedly connected to the inner wall of the guide cylinder 3; the one-way screw is rotatably connected to the inner wall of the guide cylinder 3, and the output shaft of the servo motor is fixedly connected to the one-way screw; the slider 4 is slidably connected to the drive hole, and the slider 4 is threadedly connected to the one-way screw.
[0039] The material guiding mechanism includes a material guiding cylinder 10, a material guiding shaft, a spiral blade, a heating plate, a motor housing 11, a motor, and a material guiding hopper 12; the material guiding cylinder 10 is connected to the shaping cylinder 2; the material guiding shaft is rotatably connected to the material guiding cylinder 10 and the motor housing 11 respectively; the spiral blade is located inside the material guiding cylinder 10 and is fixedly connected to the material guiding shaft; the heating plate is fixedly connected to the inner wall of the material guiding cylinder 10; the motor housing 11 is fixedly connected to the material guiding cylinder 10; the motor is fixedly connected to the inner wall of the motor housing 11, and the output shaft of the motor is fixedly connected to the material guiding shaft; the material guiding hopper 12 is connected to the material guiding cylinder 10.
[0040] It also includes auxiliary components; the auxiliary components include a wall cylinder 13, a movable block 14, an auxiliary cylinder 15, auxiliary parts symmetrically arranged on both sides of the auxiliary cylinder 15 along the length direction of the movable block 14, and a drive part for driving the movable block 14 to reciprocate along the length direction of the wall cylinder 13; the wall cylinder 13 is fixedly connected to the inner wall of the mold cylinder 1; the movable block 14 is slidably connected to the wall cylinder 13, and the movement direction of the movable block 14 is opposite to the movement direction of the movable block 8; the auxiliary cylinder 15 is fixedly connected to the movable block 14; the auxiliary part includes several sets of side vibration blocks 7; the sets of side vibration blocks 7 are connected to the auxiliary cylinder 15, and the outer wall of the shaping cylinder 2 is located on the movement trajectory of the sets of side vibration blocks 7.
[0041] The auxiliary part also includes a bidirectional screw 16, several auxiliary units, a sliding hole on the auxiliary cylinder 15, a guide hole on the auxiliary cylinder 15, and a power unit for driving the bidirectional screw 16 to rotate; the bidirectional screw 16 is rotatably connected to the auxiliary cylinder 15; several auxiliary units are equidistantly arranged along the axial direction of the bidirectional screw 16; the auxiliary unit includes a nut seat 17 and a fixing block 18; the nut seat 17 is threadedly connected to the bidirectional screw 16, and the nut seat 17 is slidably connected to the guide hole; the fixing block 18 is fixedly connected to the nut seat 17; the seven sets of side vibrating blocks include a first side vibrating block 19 and a second side vibrating block 20; the first side vibrating block 19 is connected to the fixing block 18; the second side vibrating block 20 is connected to the sliding hole.
[0042] The auxiliary unit also includes auxiliary components; the auxiliary components include a vertical block, an arc block 22, a semicircular block 23, a spring, and a groove on the fixed block 18; the vertical block is slidably connected to the groove, and the first side vibrating block 19 is fixedly connected to the vertical block; the arc block 22 is fixedly connected to the vertical block; the semicircular block 23 is fixedly connected to the inner wall of the auxiliary cylinder 15, and the semicircular block 23 is located on the movement trajectory of the arc block 22; the two ends of the spring are respectively connected to the vertical block and the groove.
[0043] The auxiliary unit also includes a push block 24, an auxiliary shaft, and a swing block 26; the push block 24 is threadedly connected to the bidirectional screw 16 and slidably connected to the guide hole; the auxiliary shaft is rotatably connected to the inner wall of the auxiliary cylinder 15; the swing block 26 is fixedly connected to the auxiliary shaft, and the second side vibrating block 20 is fixedly connected to the swing block 26; the swing block 26 is located between the push block 24 and the nut seat 17; a rocker block is fixedly connected to the nut seat 17; the swing block 26 is located on the movement trajectory of the push block 24 and the rocker block.
[0044] The push block 24 is provided with a wedge surface; the distance between the wedge surface and the swing block 26 gradually increases along the length direction of the auxiliary cylinder 15; the distance between the nut seat 17 and the swing block 26 gradually decreases along the length direction of the auxiliary cylinder 15.
[0045] It also includes a linkage unit; the linkage unit includes a linkage shaft 27, linkage units symmetrically arranged on both sides of the linkage shaft 27, and a motion unit for driving the linkage shaft 27 to rotate; the linkage shaft 27 is rotatably connected to the bottom block 6; the linkage unit includes several linkage components; the linkage components include several wall vibration blocks 28 equidistantly arranged along the circumferential direction of the linkage shaft 27; the wall vibration blocks 28 are fixedly connected to the linkage shaft 27, and the outer wall of the shaping cylinder 2 is located on the motion trajectory of the wall vibration blocks 28.
[0046] The drive unit includes a side block 29, a drive shaft 35, a first rack 30, a first gear 31, a groove on the vibrating block 7, and a side hole 25 on the groove; the side block 29 is fixedly connected to the bottom block 6; the drive shaft 35 passes through the side hole 25 and is rotatably connected to the side block 29; the length of the side block is suitable for the relative movement between the drive shaft 35 and the vibrating block 7; the first rack 30 is fixedly connected to the groove; the first gear 31 is fixedly connected to the drive shaft 35, and the first gear 31 meshes with the first rack 30; the movable block 14 is a second rack; the second rack meshes with the first gear 31.
[0047] The power unit includes a second gear 32 and a third rack 33; the second gear 32 is fixedly connected to the bidirectional screw 16; the third rack 33 is fixedly connected to the side block 29, the third rack 33 is located on the movement trajectory of the second gear 32, and the third rack 33 can mesh with the second gear 32.
[0048] The motion unit is a belt 34; the two ends of the belt 34 are respectively sleeved on the drive shaft 35 and the linkage shaft 27.
[0049] Specific implementation process: Plastic is fed into the feed cylinder 10 along the feed hopper 12. The output shaft of the motor drives the spiral blade to rotate, and the heating plate heats the plastic, thus guiding the molten plastic into the molding cylinder 2. During the process of the molten plastic being fed into the molding cylinder 2, the output shaft of the servo motor drives the one-way screw to rotate. While the one-way screw is rotating, it drives the molding cylinder 5 into the molding cylinder 2 via the slider 4, causing the molding cylinder 5 and the molding cylinder 2 to cooperate, allowing the molten plastic to cool and solidify in the mold groove between the molding cylinder 5 and the molding cylinder 2.
[0050] During the cooling and molding process of the molten plastic in the mold groove between the molding cylinder 5 and the shaping cylinder 2, the cylinder 9 is activated, which in turn drives the moving block 8 to reciprocate along the length of the base block 6 via the output shaft of the cylinder 9. During the movement of the moving block 8, the vibrating block 7 moves synchronously. The vibration of the outer wall of the shaping cylinder 2 by the vibrating block 7 helps to make the temperature distribution of the melt in the mold groove more uniform, reducing thermal stress caused by local temperature differences, thereby helping to prevent problems such as warping, deformation, or cracking of the plastic product during the cooling process.
[0051] Furthermore, vibration can reduce the friction between the molded plastic product and the mold tank, thereby reducing demolding resistance and avoiding product damage caused by direct ejection. At the same time, vibration helps the molten plastic flow more evenly in the mold tank, improves the fusion state of different melt flow fronts, enhances weld line strength, and reduces surface defects such as silver streaks and bubbles.
[0052] During the movement of the vibrating block 7, the first rack 30 moves synchronously. During the movement of the first rack 30, the first gear 31 meshes with the first rack 30, thereby driving the drive shaft 35 to rotate. During the rotation of the first gear 31, the second rack meshes with the first gear 31, thereby driving the auxiliary cylinder 15 to reciprocate along the length of the bottom block 6. During the movement of the auxiliary cylinder 15, the first side vibrating block 19 and the second side vibrating block 20 move synchronously.
[0053] The alternating vibrations formed by the first side vibrator 19, the second side vibrator 20, and the vibrator 7 result in a more uniform and continuous dynamic excitation on the forming cylinder 2, effectively improving the energy transfer efficiency of vibration and avoiding stress concentration problems that may occur with traditional single-point or synchronous vibrations. This alternating vibration mode offers the following combined advantages: First, the side vibrating block 7 and the central vibrating block 7 move alternately to form a wave-like vibration propagation, which makes the force on the circumference of the plastic cylinder 2 more uniform and significantly reduces the risk of deformation or ejection and tilting of plastic products caused by local over-vibration or under-vibration. Secondly, alternating vibration promotes microcirculation of the melt near the mold wall, enhances heat transfer efficiency, and makes the temperature gradient during cooling more gradual. Compared with single vibration, it is more effective in suppressing the accumulation of internal stress caused by uneven cooling, thereby reducing the tendency of plastic products to warp after demolding.
[0054] During the movement of the auxiliary cylinder 15, the second gear 32 meshes with the third rack 33, thereby driving the bidirectional screw 16 to rotate. During the rotation of the bidirectional screw 16, it can drive the nut seat 17 to reciprocate along the length of the guide hole. During the movement of the nut seat 17, the first side vibrating block 19 moves synchronously.
[0055] Therefore, during the injection molding process, the position of the first side vibrator 19 can be adjusted relative to the second side vibrator 20, meaning that the spatial layout of the vibration application point is dynamically adjustable, thereby changing the propagation and interference mode of the vibration wave in the molding cylinder 2. By constructing a favorable wave crest superposition area, a stronger micro-amplitude vibration force field can be formed in a specific area, significantly improving the demolding driving force in that area, which is especially beneficial for the smooth ejection of molded plastic products with deep cavities or large clamping forces.
[0056] At the same time, by combining position adjustment and alternating vibration timing, the direction of melt microflow can be dynamically guided, promoting heat diffusion in hot spots, further alleviating local overheating problems, and improving overall cooling uniformity.
[0057] During the movement of the nut seat 17, the slider 4, through the interaction of the arc block 22, the semi-circular block 23, and the spring, drives the first side vibrating block 19 to perform vertical reciprocating motion. Therefore, by allowing the first side vibrating block 19 to be adjusted in both lateral and vertical positions simultaneously, its vibration effect on the outer wall of the molding cylinder 2 achieves omnidirectional adjustability in spatial dimension, significantly enhancing the flexibility and accuracy of the vibration field. This ensures that the vibration energy effectively covers the traditional blind zone, reduces energy attenuation, and improves the overall vibration response intensity, thereby further improving the vibration efficiency of the first side vibrating block 19.
[0058] During the rotation of the bidirectional screw 16, the screw 16 drives the push block 24 to reciprocate along the length of the guide hole. Therefore, the swing block 26, through the interaction of the wedge surface of the push block 24 and the rocker block on the nut seat 17, can swing and adjust the tilt angle of the second side vibrating block 20. By adjusting the tilt angle of the second side vibrating block 20, the propagation direction of the vibration wave in the wall of the molding cylinder 2 can be changed, making it more perpendicular to the key demolding area or directionally transmitted along the stress concentration zone, reducing energy scattering and significantly improving the effective transmission efficiency of vibration energy.
[0059] By gradually increasing the distance between the wedge surface and the swing block 26 along the length of the auxiliary cylinder 15, and gradually decreasing the distance between the nut seat 17 and the swing block 26 along the length of the auxiliary cylinder 15, the swing angles of the second side vibrating blocks 20 can be different, thus breaking the limitations of traditional symmetrical or equidistant configurations. This allows the vibration force to exhibit a gradient distribution on the outer wall of the forming cylinder 2, and the interference mode of the vibration wave transitions from dense to sparse. This can generate a progressive demolding driving force in the axial direction of the forming cylinder 2, thereby avoiding skewing or jamming caused by instantaneous full-circumference release and significantly improving the smoothness of the ejection process.
[0060] During the rotation of the drive shaft 35, the drive shaft 35 can drive the linkage shaft 27 to rotate synchronously via the belt 34. During the rotation of the linkage shaft 27, the wall vibration block 28 rotates synchronously. Through the rotation of the wall vibration block 28, the contact point between it and the outer wall of the molding cylinder 2 continuously changes, forming a "scanning" vibration excitation, effectively covering areas that are difficult to reach by the traditional fixed vibration block 7, significantly reducing vibration attenuation and energy blind spots, and improving the overall vibration uniformity.
[0061] In summary, in injection molding, the adjustable lateral and vertical positions of the first side vibrator 19, the variable angle of the second side vibrator 20, the gradually varying distances between the side vibrators 7, and the rotational design of the wall vibrator 28 collectively construct a multi-dimensional, dynamically adjustable vibration system, significantly improving the accuracy and adaptability of vibration control over the outer wall of the molding cylinder 2. Therefore, after the molten plastic cools and solidifies, the molded plastic product can be efficiently removed, thus improving the injection molding effect.
[0062] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. An injection molding mold, comprising a mold cylinder with a through hole, characterized in that: It also includes a molding cylinder, a guide cylinder, a slider, a forming cylinder, auxiliary mechanisms symmetrically arranged on both sides of the through hole, a material guiding mechanism for introducing plastic into the molding cylinder, and a drive mechanism for driving the slider to reciprocate along the length of the guide cylinder; the molding cylinder is fixedly connected to the through hole; the guide cylinder is fixedly connected to the outer wall of the mold cylinder; the slider is slidably connected to the guide cylinder; the forming cylinder is fixedly connected to the slider, and the forming cylinder can slide in and out of the molding cylinder; the auxiliary mechanisms include a base block, a vibrating block, a moving block, and a power component for driving the moving block to reciprocate along the length of the base block; the base block is fixedly connected to the mold cylinder; the vibrating block is slidably connected to the base block, and the outer wall of the molding cylinder is located on the movement trajectory of the vibrating block; the moving block is fixedly connected to the vibrating block.
2. The injection molding die according to claim 1, characterized in that: It also includes auxiliary components; the auxiliary components include a wall cylinder, a movable block, an auxiliary cylinder, auxiliary parts symmetrically arranged on both sides of the auxiliary cylinder along the length direction of the movable block, and a drive part for driving the movable block to reciprocate along the length direction of the wall cylinder; the wall cylinder is fixedly connected to the mold cylinder; the movable block is slidably connected to the wall cylinder, and the movement direction of the movable block is opposite to the movement direction of the movable block; the auxiliary cylinder is fixedly connected to the movable block; the auxiliary part includes several side vibration block groups; the side vibration block groups are connected to the auxiliary cylinder, and the outer wall of the molding cylinder is located on the movement trajectory of the side vibration block groups.
3. The injection molding die according to claim 2, characterized in that: The auxiliary part also includes a bidirectional screw, several auxiliary units, a sliding hole on the auxiliary cylinder, a guide hole on the auxiliary cylinder, and a power unit for driving the bidirectional screw to rotate; the bidirectional screw is rotatably connected to the auxiliary cylinder; the auxiliary unit includes a nut seat and a fixing block; the nut seat is threadedly connected to the bidirectional screw, and the nut seat is slidably connected to the guide hole; the fixing block is fixedly connected to the nut seat; the side vibrating block group includes a first side vibrating block and a second side vibrating block; the first side vibrating block is connected to the fixing block; the second side vibrating block is connected to the sliding hole.
4. The injection molding die according to claim 3, characterized in that: The auxiliary unit also includes auxiliary components; the auxiliary components include a vertical block, an arc block, a semicircular block, a spring, and a groove on the fixed block; the vertical block is slidably connected to the groove, and the first side vibrating block is fixedly connected to the vertical block; the arc block is fixedly connected to the vertical block; the semicircular block is fixedly connected to the inner wall of the auxiliary cylinder, and the semicircular block is located on the movement trajectory of the arc block; the two ends of the spring are respectively connected to the vertical block and the groove.
5. The injection molding die according to claim 4, characterized in that: The auxiliary unit also includes a push block, an auxiliary shaft, and a swing block; the push block is threadedly connected to the bidirectional screw and slidably connected to the guide hole; the auxiliary shaft is rotatably connected to the inner wall of the auxiliary cylinder; the swing block is fixedly connected to the auxiliary shaft, and the second side vibrating block is fixedly connected to the swing block; the swing block is located between the push block and the nut seat, and the swing block is located on the motion trajectory of the push block and the nut seat.
6. The injection molding die according to claim 5, characterized in that: The push block has a wedge surface; the distance between the wedge surface and the swing block gradually increases along the length of the auxiliary cylinder; the distance between the nut seat and the swing block gradually decreases along the length of the auxiliary cylinder.
7. The injection molding die according to claim 3, characterized in that: It also includes a linkage unit; the linkage unit includes a linkage shaft, linkage units symmetrically arranged on both sides of the linkage shaft, and a motion unit for driving the linkage shaft to rotate; the linkage shaft is rotatably connected to the bottom block; the linkage unit includes several linkage components; the linkage components include several wall vibration blocks equidistantly arranged along the circumferential direction of the linkage shaft; the wall vibration blocks are fixedly connected to the linkage shaft, and the outer wall of the shaping cylinder is located on the motion trajectory of the wall vibration blocks.
8. The injection molding die according to claim 7, characterized in that: The drive unit includes a side block, a drive shaft, a first rack, a first gear, a groove on the vibrating block, and a side hole on the groove; the side block is fixedly connected to the bottom block; the drive shaft passes through the side hole and is rotatably connected to the side block; the first rack is fixedly connected to the groove; the first gear is fixedly connected to the drive shaft and meshes with the first rack; the movable block is a second rack; the second rack meshes with the first gear.
9. The injection molding die according to claim 8, characterized in that: The power unit includes a second gear and a third rack; the second gear is fixedly connected to a bidirectional screw; the third rack is fixedly connected to a side block, and the third rack is located on the motion trajectory of the second gear, and the third rack can mesh with the second gear.
10. An injection molding die according to claim 9, characterized in that: The motion unit is a belt; the two ends of the belt are respectively fitted onto the drive shaft and the linkage shaft.