Die material returning stroke buffering linkage structure

Abstract

The present application relates to a mold material return technology field, specifically disclose a kind of mold material return stroke buffering linkage structure, including static mold, the side of static mold is equipped with guide rod, guide rod is slidably installed with movable mold, movable mold is adapted with static mold, movable mold is equipped with material port with static mold side away from, the end of guide rod is equipped with bracket, the side of static mold away from movable mold is provided with material return assembly, material return assembly includes ejector rod, the side of static mold mirror image is equipped with two sliding holes, the number of ejector rod is two, two ejector rod is slidably inserted into sliding hole, the cavity of static mold interior is equipped with the groove being communicated with sliding hole, adopt driving motor cooperation reel, drawstring, guide roller composition traction drive structure, rely on rope transmission synchronous drive two groups of ejector rod, top block completes material return action, transmission arrangement is flexible, occupies small, stable output push power, realize mold automatic material return operation, reduce manual participation, improve forming processing continuity.

Description

Technical Field

[0001] This invention relates to the field of mold ejection technology, and in particular to a mold ejection stroke buffer linkage structure. Background Technology

[0002] A mold is a tooling carrier used to form products. After the product is filled, held under pressure, cooled and formed inside the mold, a material ejection mechanism is required to smoothly eject the formed product remaining in the mold cavity, thereby completing a single forming cycle. It is an indispensable key structure in the automated production of molds. Conventional mold ejection mechanisms mostly adopt direct hydraulic cylinder drive or a single spring buffer ejection structure.

[0003] The hydraulic cylinder direct push ejection mechanism has a rapid response and a large rigid impact at the moment of ejection. For thin-walled parts and plastic products, it is very easy to cause whitening, cracking and surface deformation damage to the products. At the same time, the hydraulic drive requires matching oil circuits and sealing elements, the overall structure occupies a lot of space, the pipeline is prone to leakage, and maintenance is complicated. The material ejection structure that relies solely on spring buffers has limited flexibility in adjusting the buffering force and buffering start-up stroke. It also has a single buffering level, resulting in limited impact absorption and making it difficult to adapt to the production of products of different specifications and materials.

[0004] Therefore, we propose a buffer linkage structure for the die ejection stroke to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a buffer linkage structure for the mold ejection stroke, which replaces the rigid ejection structure of traditional hydraulic cylinders and pneumatic cylinders with a flexible drive method of drive motor rope traction, and is combined with compression springs, rubber dampers and positioning springs to form a multi-stage linkage buffer mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mold ejection stroke buffer linkage structure, comprising a stationary mold, a guide rod mounted on one side of the stationary mold, a movable mold slidably mounted on the guide rod, the movable mold being adapted to the stationary mold, a material outlet mounted on the side of the movable mold away from the stationary mold, a bracket mounted on one end of the guide rod, and an ejection assembly provided on the side of the stationary mold away from the movable mold, the ejection assembly including ejector pins, two sliding holes mirror-imaged on one side of the stationary mold, and two ejector pins sliding... The moving mold inserts into the sliding hole. The internal cavity of the stationary mold has a groove that connects to the sliding hole. One end of the ejector rod is equipped with an ejector block, which is located in the groove. The outer diameter of the ejector block is larger than the outer diameter of the ejector rod. The end of the ejector rod away from the ejector block is equipped with a carrier rod. The guide rod is assembled on one side of the stationary mold. The moving mold slides along the guide rod to realize the opening and closing action of the moving mold and the stationary mold. After the moving mold and the stationary mold complete the mold closing, the molten material is injected into the cavity through the sprue. After the material cools and solidifies, the moving mold slides backward along the guide rod and separates from the stationary mold. The molded product is left in the cavity of the stationary mold. The stationary mold has a control component for pushing the ejector rod on the side near the carrier rod. The carrier rod is equipped with a buffer component. When the drive motor is started, it drives the reel to rotate and wind up the pull rope. The pull rope slides outside the guide rollers arranged alternately at multiple locations. During the tightening process of the pull rope, it forms a traction force on the guide rollers. The guide rollers drive the carrier rod and ejector rod to move synchronously towards the moving mold via the carrier block. The ejector rod slides along the sliding hole of the stationary mold, driving the ejector block to push the product inside the cavity forward to perform the ejection operation. During the movement of the ejector rod, the support ring moves with the carrier rod. The compression spring is squeezed by the support ring and the stationary mold to produce elastic deformation, which initially absorbs the impact of ejection.

[0007] Preferably, a compression spring is fitted on the ejector rod. The end of the compression spring away from the carrier rod is connected to the stationary mold. A support ring is installed on the end of the compression spring near the carrier rod. The support ring is fitted on the ejector rod. After the ejection process is completed, the ejector rod and ejector block automatically reset by the spring force. No additional reset drive component is required, which simplifies the overall structure, reduces the equipment manufacturing cost, and ensures the stable operation cycle of the ejection assembly. After the ejection process is completed, the drive motor stops running, the compression spring releases its elastic force to push the support ring, carrier rod, and ejector rod backward, causing the ejector block to retract, thus completing the automatic reset of the ejection assembly.

[0008] Preferably, a threaded sleeve is rotatably mounted on the side of the support ring away from the compression spring, and the outer surface of the top rod near the support rod is threaded. The threaded sleeve is threadedly connected to the top rod. Rotating the threaded sleeve causes it to move axially along the top rod by means of its threaded engagement with the top rod, pushing the support ring to change position and adjusting the pre-compression of the compression spring. This adjusts the initial elastic preload of the spring. Rotating the control block causes the screw to extend and retract relative to the support rod by means of threaded transmission, driving the support rod, mounting base, and abutment to change their axial position as a whole. This adjusts the initial distance between the abutment and the rubber block, adjusts the pre-compression of the compression spring, and flexibly changes the initial elastic force of the primary buffer to adapt to the buffering force requirements of products of different materials and thicknesses.

[0009] Preferably, the control component includes a protrusion mounted on the side of the stationary mold near the carrier rod. A pull rope is mounted on the surface of the protrusion. A positioning seat is mounted on the side of the stationary mold near the protrusion, and a drive motor is installed inside the positioning seat. A reel is mounted on the drive end of the drive motor. Carrier blocks are mounted on the ends of the two carrier rods that are close to each other. Guide rollers are rotatably mounted on the sides of the two carrier blocks that are close to each other. The pull rope rests on the guide rollers, and the end of the pull rope away from the protrusion is connected to the inside of the reel. The drive motor, reel, pull rope, and guide roller form a traction drive structure. The two sets of ejector rods and ejector blocks are synchronously driven by rope transmission to complete the material ejection action. The transmission arrangement is flexible, occupies little space, and outputs stable ejection force, realizing automated material ejection operation of the mold, reducing manual intervention, improving the continuity of molding processing, and abandoning the traditional mechanical rigid ejection and complex hydraulic and pneumatic structures. The ejection speed, buffer stroke, and buffer force can all be mechanically fine-tuned. The action is highly controllable, with low noise and stable response, which can perfectly match the continuous operation requirements of the mold and improve the overall automation level and production efficiency of the mold.

[0010] Preferably, there are three guide rollers, which are alternately distributed on both sides of the pull rope. By alternately arranging the guide rollers on both sides of the pull rope, the transmission direction of the pull rope is optimized, the stress state is improved, the pull rope is prevented from deviating or derailing, and the stability and reliability of the traction transmission process are improved.

[0011] Preferably, the buffer assembly includes a screw, which is threadedly connected to the inner wall of a carrier rod. A control block is installed at the end of the screw away from the stationary mold, and a support rod is installed at the end of the screw near the stationary mold. A mounting base is installed at the end of the support rod away from the screw. A rubber block is installed on the side of the stationary mold near the carrier rod, and the rubber block is located on one side of the mounting base. The screw and carrier rod are threaded together. Rotating the screw can adjust the initial distance between the abutment plate and the rubber block, thereby changing the activation timing of the buffer structure. The buffer intervention node can be adjusted according to different material ejection strokes, adapting to the material ejection conditions of various specifications of products, and has stronger versatility.

[0012] Preferably, there are several support rods, which are distributed circumferentially. The support rods gradually expand from the screw towards the mounting base, so as to evenly transfer the buffer load borne by the abutment plate to the screw and the support rod, disperse the force, reduce local stress concentration, avoid deformation and damage of parts during the buffering process, and improve the operating durability of the entire material ejection buffer structure.

[0013] Preferably, a positioning block is installed on the side of the mounting base near the support rod, and a storage groove is provided on the side of the mounting base away from the support rod. The storage groove extends into the positioning block, and a sliding rod is slidably inserted into the positioning block. A stop plate is installed at the end of the sliding rod near the stationary mold. The rubber block is located on the movement trajectory of the stop plate. Through the buffer assembly, the compression spring achieves primary buffering during the unloading operation, the contact between the stop plate and the rubber block forms damping buffering, and the positioning spring deforms under pressure to form secondary elastic buffering. The multiple buffer structures work together to effectively reduce the rigid impact generated by the top block pushing the product, prevent defects such as whitening, cracking, and deformation of the product, and ensure the appearance and structural integrity of the finished product.

[0014] Preferably, the end of the slide rod away from the abutment plate passes through the positioning block and is fixedly connected to a stop block. The outer diameter of the stop block is larger than the outer diameter of the slide rod, which restricts the slide rod from disengaging from the positioning block and ensures that the abutment plate is in a stable state. During the material ejection process, the carrier rod synchronously drives the screw, support rod, mounting base and abutment plate to move forward together. The abutment plate first contacts the rubber block on the side of the stationary mold, forming the first buffer damping. When the material continues to advance, the slide rod slides along the internal receiving groove of the positioning block, and the positioning spring is compressed and deformed to achieve secondary buffering. It works in conjunction with the compression spring to form a multi-level linkage buffer structure, which weakens the rigid impact generated by the top block pushing the product and avoids product damage due to pressure.

[0015] Preferably, a positioning spring is installed on the side of the abutment plate near the support rod. The positioning spring is sleeved on the slide rod, and the end of the positioning spring away from the abutment plate is connected to the inner wall of the receiving groove. The positioning spring pushes the abutment plate towards the stationary mold, and when the abutment plate contacts the rubber block, the positioning spring further absorbs the impact force.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This solution uses a drive motor in conjunction with a reel, pull rope, and guide roller to form a traction drive structure. Relying on rope transmission, it synchronously drives two sets of ejector rods and ejector blocks to complete the material ejection action. The transmission arrangement is flexible, occupies little space, and provides stable output of ejection force, realizing automated mold ejection operation, reducing manual intervention, improving the continuity of molding processing, and abandoning the traditional mechanical rigid ejection and complex hydraulic and pneumatic structures. The ejection speed, buffer stroke, and buffer force can all be mechanically fine-tuned, with strong controllability, low noise, and smooth response. It can perfectly match the continuous operation requirements of molds and improve the overall automation level and production efficiency of molds.

[0017] 2. This solution uses a buffer assembly. During the unloading process, the compression spring provides primary buffering, the contact between the abutment plate and the rubber block creates damping buffering, and the deformation of the positioning spring under pressure creates secondary elastic buffering. The multiple buffer structures work together to effectively reduce the rigid impact generated by the top block pushing the product, preventing defects such as whitening, cracking, and deformation, and ensuring the appearance and structural integrity of the finished product.

[0018] 3. This solution allows for changing the position of the support ring and adjusting the pre-compression of the compression spring by rotating the threaded sleeve, thus flexibly changing the initial elastic force of the primary buffer and adapting to the buffering force requirements of products of different materials and thicknesses.

[0019] 4. This solution uses a compression spring, which automatically resets the top rod and top block after the material is ejected, eliminating the need for additional reset drive components. This simplifies the overall structure, reduces equipment manufacturing costs, and ensures stable operation of the ejection assembly.

[0020] 5. This solution optimizes the direction of the pull rope transmission by alternately arranging guide rollers on both sides of the pull rope, improves the stress state, avoids pull rope deviation and derailment, and enhances the smoothness and reliability of the traction transmission process. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view schematic diagram of the present invention; Figure 3 In this invention Figure 2 Enlarged view of point A; Figure 4 This is a partial cross-sectional exploded view of the present invention; Figure 5 This is a partial exploded view of the present invention; Figure 6 In this invention Figure 5 A side view diagram; Figure 7 In this invention Figure 6 Enlarged diagram of point B.

[0023] Explanation of reference numerals in the attached figures: 1. Static mold; 2. Guide rod; 3. Moving mold; 4. Support; 5. Material inlet; 6. Unloading assembly; 61. Carrier rod; 62. Ejector rod; 63. Compression spring; 64. Threaded sleeve; 65. Support ring; 66. Ejector block; 67. Groove; 68. Sliding hole; 7. Control assembly; 71. Protrusion; 72. Pull rope; 73. Guide roller; 74. Carrier block; 75. Drive motor; 76. Roller; 77. Positioning seat; 8. Buffer assembly; 81. Rubber block; 82. Control block; 83. Screw; 84. Support rod; 85. Stop block; 86. Positioning block; 87. Support plate; 88. Positioning spring; 89. Slide rod; 810. Mounting seat; 811. Storage slot. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 7 This invention provides a technical solution: a mold ejection stroke buffer linkage structure, including a stationary mold 1, a guide rod 2 installed on one side of the stationary mold 1, a movable mold 3 slidably installed on the guide rod 2, the movable mold 3 being adapted to the stationary mold 1, a material outlet 5 installed on the side of the movable mold 3 away from the stationary mold 1, a bracket 4 installed at one end of the guide rod 2, and an ejection assembly 6 provided on the side of the stationary mold 1 away from the movable mold 3. The ejection assembly 6 includes ejector rods 62, and two sliding holes 68 are mirror-imagely opened on one side of the stationary mold 1. There are two ejector rods 62, which are slidably inserted into the sliding holes 68 inside the stationary mold 1. The cavity has a groove 67 with a connecting sliding hole 68. A top block 66 is installed at one end of the ejector rod 62. The top block 66 is located in the groove 67. The outer diameter of the top block 66 is larger than the outer diameter of the ejector rod 62. A carrier rod 61 is installed at the end of the ejector rod 62 away from the top block 66. The guide rod 2 is assembled on one side of the stationary mold 1. The moving mold 3 slides along the guide rod 2 to realize the opening and closing action of the moving mold 3 and the stationary mold 1. After the moving mold 3 and the stationary mold 1 are closed, the molten material is injected into the cavity through the material port 5. After the material cools and solidifies, the moving mold 3 slides backward along the guide rod 2 and separates from the stationary mold 1. The molded product is left in the cavity of the stationary mold 1. A control component 7 for pushing the ejector rod 62 is provided on the side of the stationary mold 1 near the support rod 61. A buffer component 8 is provided on the support rod 61. When the drive motor 75 is started, the drive motor 75 drives the winding wheel 76 to rotate and wind up the pull rope 72. The pull rope 72 slides outside the guide rollers 73 arranged alternately in multiple places. During the tightening process, the pull rope 72 forms a traction force on the guide rollers 73. The guide rollers 73 drive the support rod 61 and the ejector rod 62 to move synchronously towards the moving mold 3 via the support block 74. The ejector rod 62 slides along the sliding hole 68 of the stationary mold 1, driving the ejector block 66 to push the product inside the cavity forward to perform the ejection operation. During the movement of the ejector rod 62, the support ring 65 moves with the support rod 61. The compression spring 63 is squeezed by the support ring 65 and the stationary mold 1 to produce elastic deformation, which initially absorbs the impact of ejection.

[0026] A compression spring 63 is fitted on the ejector rod 62. The end of the compression spring 63 away from the carrier rod 61 is connected to the stationary mold 1. A support ring 65 is installed on the end of the compression spring 63 near the carrier rod 61. The support ring 65 is fitted on the ejector rod 62. After the ejection is completed, the ejector rod 62 and the ejector block 66 are automatically reset by the elastic force of the compression spring 63. There is no need to add an additional reset drive component, which simplifies the overall structure, reduces the equipment manufacturing cost, and ensures the stable operation cycle of the ejection assembly 6. After the ejection process is completed, the drive motor 75 stops running, the compression spring 63 releases its elastic force to push the support ring 65, the carrier rod 61 and the ejector rod 62 to move backward, and drives the ejector block 66 to retract, thus completing the automatic reset of the ejection assembly 6.

[0027] A threaded sleeve 64 is rotatably mounted on the side of the support ring 65 away from the compression spring 63. The outer surface of the top rod 62 near the support rod 61 is threaded. The threaded sleeve 64 is threadedly connected to the top rod 62. Rotating the threaded sleeve 64 causes it to move axially along the top rod 62 based on its threaded engagement with the top rod 62, pushing the support ring 65 to change position and adjusting the pre-compression of the compression spring 63. This adjusts the initial elastic preload of the spring. Rotating the control block 82 causes the screw 83 to extend and retract relative to the support rod 61 through threaded transmission, driving the support rod 84, mounting base 810, and abutment plate 87 to change their axial position as a whole. This adjusts the initial distance between the abutment plate 87 and the rubber block 81, and adjusts the pre-compression of the compression spring 63. This flexibly changes the initial elastic force of the first-stage buffer, adapting to the buffering force requirements of products of different materials and thicknesses.

[0028] The control component 7 includes a protrusion 71, which is mounted on the side of the stationary mold 1 near the carrier rod 61. A pull rope 72 is mounted on the surface of the protrusion 71. A positioning seat 77 is mounted on the side of the stationary mold 1 near the protrusion 71. A drive motor 75 is installed inside the positioning seat 77. A winding wheel 76 is mounted on the drive end of the drive motor 75. A carrier block 74 is mounted on the end of each of the two carrier rods 61 that is close to each other. A guide roller 73 is rotatably mounted on the side of the two carrier blocks 74 that is close to each other. The pull rope 72 rests on the guide roller 73. The end of the pull rope 72 away from the protrusion 71 is connected to the inside of the winding wheel 76. The drive motor 75 is used for the connection. The traction drive structure, consisting of a reel 76, a pull rope 72, and a guide roller 73, synchronously drives two sets of ejector rods 62 and ejector blocks 66 to complete the material ejection action via rope transmission. The transmission arrangement is flexible, occupies little space, and provides stable output ejection force, realizing automated material ejection of the mold, reducing manual intervention, improving the continuity of molding and processing, and abandoning the traditional mechanical rigid ejection and complex hydraulic and pneumatic structures. The ejection speed, buffer stroke, and buffer force can all be mechanically fine-tuned, with strong controllability, low noise, and smooth response. It can perfectly match the continuous operation requirements of the mold and improve the overall automation level and production efficiency of the mold.

[0029] There are three guide rollers 73, which are alternately distributed on both sides of the pull rope 72. By alternately arranging the guide rollers 73 on both sides of the pull rope 72, the transmission direction of the pull rope 72 is optimized, the stress state is improved, the pull rope 72 is prevented from deviating or derailing, and the smoothness and reliability of the traction transmission process are improved.

[0030] The buffer assembly 8 includes a screw 83, which is threadedly connected to the inner wall of the carrier rod 61. A control block 82 is installed at the end of the screw 83 away from the stationary mold 1, and a support rod 84 is installed at the end of the screw 83 near the stationary mold 1. A mounting seat 810 is installed at the end of the support rod 84 away from the screw 83. A rubber block 81 is installed on the side of the stationary mold 1 near the carrier rod 61, and the rubber block 81 is located on one side of the mounting seat 810. The screw 83 and the carrier rod 61 are threadedly engaged. Rotating the screw 83 can adjust the initial distance between the abutment plate 87 and the rubber block 81, thereby changing the start time of the buffer structure. The buffer intervention node can be adjusted according to different material ejection strokes, adapting to the material ejection conditions of various specifications of products, and has stronger versatility.

[0031] There are several support rods 84, which are distributed circumferentially. The support rods 84 gradually expand from the screw 83 towards the mounting base 810, so as to evenly transfer the buffer load borne by the abutment plate 87 to the screw 83 and the support rod 61, disperse the force, reduce local stress concentration, avoid deformation and damage of parts during the buffering process, and improve the operating durability of the entire material ejection buffer structure.

[0032] A positioning block 86 is installed on the side of the mounting base 810 near the support rod 84. A storage groove 811 is opened on the side of the mounting base 810 away from the support rod 84. The storage groove 811 extends into the positioning block 86. A slide rod 89 is slidably inserted into the positioning block 86. A stop plate 87 is installed on the end of the slide rod 89 near the stationary mold 1. The rubber block 81 is located on the movement trajectory of the stop plate 87. Through the buffer assembly 8, the compression spring 63 achieves primary buffering during the unloading operation. The stop plate 87 and the rubber block 81 form damping buffering. The positioning spring 88 is compressed and deformed to form secondary elastic buffering. The multiple buffering structures work together to effectively reduce the rigid impact generated by the top block 66 pushing the product, prevent defects such as whitening, cracking, and deformation of the product, and ensure the appearance and structural integrity of the finished product.

[0033] The end of the slide rod 89 away from the abutment plate 87 passes through the positioning block 86 and is fixedly connected to the stop block 85. The outer diameter of the stop block 85 is larger than the outer diameter of the slide rod 89, which restricts the slide rod 89 from disengaging from the positioning block 86 and ensures that the abutment plate 87 is in a stable state. During the material ejection process, the carrier rod 61 drives the screw 83, support rod 84, mounting base 810 and abutment plate 87 to move forward together. The abutment plate 87 first contacts the rubber block 81 on one side of the stationary mold 1, forming the first buffer damping. When the material continues to advance, the slide rod 89 slides along the internal receiving groove 811 of the positioning block 86. The positioning spring 88 is compressed and deformed to achieve secondary buffering. It works in conjunction with the compression spring 63 to form a multi-stage linkage buffer structure, which weakens the rigid impact generated by the top block 66 pushing the product and avoids damage to the product due to pressure.

[0034] A positioning spring 88 is installed on the side of the abutment plate 87 near the support rod 84. The positioning spring 88 is sleeved on the slide rod 89. The end of the positioning spring 88 away from the abutment plate 87 is connected to the inner wall of the storage groove 811. The positioning spring 88 pushes the abutment plate 87 towards the stationary mold 1. When the abutment plate 87 contacts the rubber block 81, the positioning spring 88 further absorbs the impact force.

[0035] Working principle: The guide rod 2 is assembled on one side of the stationary mold 1. The moving mold 3 slides along the guide rod 2 to realize the opening and closing action of the moving mold 3 and the stationary mold 1. After the moving mold 3 and the stationary mold 1 are closed, the molten material is injected into the cavity through the material port 5. After the material cools and is formed, the moving mold 3 slides backward along the guide rod 2 and separates from the stationary mold 1. The formed product is left in the cavity of the stationary mold 1. Start the drive motor 75, which drives the reel 76 to rotate and wind up the pull rope 72. The pull rope 72 slides outside the guide rollers 73 arranged alternately in multiple places. During the tightening process, the pull rope 72 forms a traction force on the guide rollers 73. The guide rollers 73 drive the carrier rod 61 and the push rod 62 to move synchronously towards the moving mold 3 via the carrier block 74. The push rod 62 slides along the sliding hole 68 of the stationary mold 1, driving the push block 66 to push the product inside the cavity forward to perform the material removal operation. During the movement of the push rod 62, the support ring 65 moves together with the carrier rod 61. The compression spring 63 is squeezed by the support ring 65 and the stationary mold 1 to produce elastic deformation, which initially absorbs the impact of material removal. During the material ejection process, the carrier rod 61 simultaneously drives the screw 83, support rod 84, mounting base 810, and abutment plate 87 to move forward together. The abutment plate 87 first contacts the rubber block 81 on one side of the stationary mold 1, forming the first buffer damping. As the material continues to be ejected, the slide rod 89 slides along the internal receiving groove 811 of the positioning block 86, and the positioning spring 88 is compressed and deformed to achieve secondary buffering. It works in conjunction with the compression spring 63 to form a multi-level linkage buffer structure, which weakens the rigid impact generated by the top block 66 pushing the product and avoids damage to the product due to pressure. After the unloading process is completed, the drive motor 75 stops running, the compression spring 63 releases its elastic force to push the support ring 65, the carrier rod 61 and the top rod 62 to move backward, driving the top block 66 to retract, and completing the automatic reset of the unloading assembly 6; Rotating the threaded sleeve 64 causes it to move axially along the push rod 62 based on its threaded engagement with the push rod 62, pushing the support ring 65 to change position and adjusting the pre-compression of the compression spring 63. This adjusts the initial elastic preload of the spring. Rotating the control block 82 causes the screw 83 to extend and retract relative to the carrier rod 61 via threaded transmission, which in turn drives the support rod 84, mounting base 810, and abutment plate 87 to change their axial position as a whole, adjusting the initial distance between the abutment plate 87 and the rubber block 81 to adapt to the buffering requirements under different material ejection strokes.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mold ejection stroke buffer linkage structure, comprising a stationary mold (1), a guide rod (2) mounted on one side of the stationary mold (1), a movable mold (3) slidably mounted on the guide rod (2), the movable mold (3) being adapted to the stationary mold (1), a material outlet (5) mounted on the side of the movable mold (3) away from the stationary mold (1), and a bracket (4) mounted on one end of the guide rod (2), characterized in that: The stationary mold (1) is provided with a material ejection assembly (6) on the side away from the moving mold (3). The material ejection assembly (6) includes an ejector rod (62). Two sliding holes (68) are mirror-image opened on one side of the stationary mold (1). There are two ejector rods (62). The two ejector rods (62) are slidably inserted into the sliding holes (68). The internal cavity of the stationary mold (1) is provided with a groove (67) that connects to the sliding holes (68). A top block (66) is installed at one end of the ejector rod (62). The top block (66) is located in the groove (67). The outer diameter of the top block (66) is larger than the outer diameter of the ejector rod (62). A carrier rod (61) is installed at the end of the ejector rod (62) away from the top block (66). The static mold (1) is provided with a control component (7) for pushing the push rod (62) on the side near the carrier rod (61), and a buffer component (8) is provided on the carrier rod (61).

2. The mold ejection stroke buffer linkage structure according to claim 1, characterized in that: A compression spring (63) is fitted on the top rod (62). The end of the compression spring (63) away from the carrier rod (61) is connected to the stationary mold (1). A support ring (65) is installed on the end of the compression spring (63) close to the carrier rod (61). The support ring (65) is fitted on the top rod (62).

3. The mold ejection stroke buffer linkage structure according to claim 2, characterized in that: The support ring (65) is rotatably mounted with a threaded sleeve (64) on the side away from the compression spring (63). The outer surface of the top rod (62) near the support rod (61) is provided with threads. The threaded sleeve (64) is threadedly connected to the top rod (62).

4. The mold ejection stroke buffer linkage structure according to claim 1, characterized in that: The control component (7) includes a protrusion (71) which is installed on the side of the stationary mold (1) near the carrier rod (61). A pull rope (72) is installed on the surface of the protrusion (71). A positioning seat (77) is installed on the side of the stationary mold (1) near the protrusion (71). A drive motor (75) is installed in the positioning seat (77). A reel (76) is installed on the drive end of the drive motor (75). A carrier block (74) is installed on the end of each of the two carrier rods (61) that is close to each other. A guide roller (73) is rotatably installed on the side of the two carrier blocks (74) that is close to each other. The pull rope (72) rests on the guide roller (73). The end of the pull rope (72) away from the protrusion (71) is connected to the inside of the reel (76).

5. The mold ejection stroke buffer linkage structure according to claim 4, characterized in that: There are three guide rollers (73), which are alternately distributed on both sides of the pull rope (72).

6. The mold ejection stroke buffer linkage structure according to claim 1, characterized in that: The buffer assembly (8) includes a screw (83) which is threaded to the inner wall of the carrier rod (61). A control block (82) is installed at the end of the screw (83) away from the stationary mold (1). A support rod (84) is installed at the end of the screw (83) close to the stationary mold (1). A mounting seat (810) is installed at the end of the support rod (84) away from the screw (83). A rubber block (81) is installed on the side of the stationary mold (1) close to the carrier rod (61). The rubber block (81) is located on one side of the mounting seat (810).

7. The mold ejection stroke buffer linkage structure according to claim 6, characterized in that: The number of the support rods (84) is several, and the support rods (84) are distributed circumferentially. The support rods (84) gradually expand from the screw (83) towards the mounting base (810).

8. The mold ejection stroke buffer linkage structure according to claim 6, characterized in that: A positioning block (86) is installed on the side of the mounting base (810) near the support rod (84). A storage groove (811) is provided on the side of the mounting base (810) away from the support rod (84). The storage groove (811) extends into the positioning block (86). A slide rod (89) is slidably inserted into the positioning block (86). A stop plate (87) is installed on the end of the slide rod (89) near the stationary mold (1). The rubber block (81) is located on the movement trajectory of the stop plate (87).

9. The mold ejection stroke buffer linkage structure according to claim 8, characterized in that: The end of the slide rod (89) away from the abutment plate (87) passes through the positioning block (86) and is fixedly connected to a stop block (85), the outer diameter of which is larger than the outer diameter of the slide rod (89).

10. The mold ejection stroke buffer linkage structure according to claim 8, characterized in that: A positioning spring (88) is installed on the side of the abutment (87) near the support rod (84). The positioning spring (88) is sleeved on the slide rod (89). The end of the positioning spring (88) away from the abutment (87) is connected to the inner wall of the storage groove (811).

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