Full-automatic injection product taking-out device

Abstract

The present application relates to injection molding carrying technical field, especially injection molding product full-automatic taking-out device, its technical scheme includes main body structure, bearing structure, clamping structure and linkage structure, the main body structure includes base and support frame, the base with the support frame is frame type, the support frame is fixed on the base upper end, the bearing structure is used for the product after injection molding to undertake, the clamping structure is used for the clamping of the injection molding piece after undertaking, the linkage structure is linked with bearing structure, and the driving force of the linkage structure is converted into the clamping force of the relative motion of the clamping block in the clamping structure when the bearing structure descends.The present application relies on mechanical hydraulic linkage to realize the synchronous action of undertaking and clamping, does not need additional electric control driving, reduces equipment cost, the plastic piece is prevented from falling and colliding by the lifting of the bearing table, the flexible clamping block avoids the workpiece scratch;after taking material, the elastic element is automatically reset and the clamp is loosened, saves additional driving step, reduces manual intervention, improves injection molding taking efficiency and yield.

Description

Technical Field

[0001] This invention relates to the field of injection molding handling technology, and in particular to a fully automatic removal device for injection molded products. Background Technology

[0002] After injection molding with the mold opening facing downwards, the molded part, no longer bound by the mold cavity, is only held together by a small adhesive force. Gravity will directly tear the product off. When the plastic part falls, it is prone to collision and friction with the mold and worktable, resulting in scratches, dents, and cosmetic defects. Thin-walled and slender plastic parts may also deform or break, significantly increasing the defect rate. The fallen parts are scattered around the equipment, requiring workers to stop the machine and manually pick them up, frequently interrupting the injection molding line and lengthening the production cycle of a single piece. Manual picking also poses safety hazards such as hand injuries from hot molds and sharp plastic parts, while increasing labor costs. Relying solely on manual picking cannot meet the needs of automated continuous injection molding production.

[0003] From the perspective of plastic recycling, damaged, scratched, and deformed scrap plastic parts cannot directly enter the crushing and granulation recycling process. The debris and scraps generated from collisions are mixed with oil and dust, significantly increasing the difficulty of sorting. Defective plastic parts suffer severe surface damage, reducing the purity of recycled materials. Secondary injection molding is prone to defects such as black spots, bubbles, and stress cracking, reducing the usability of the recycled plastic. Furthermore, scattered workpieces are mixed with metal shavings and lubricating oil from equipment, requiring additional cleaning and sorting processes before recycling, lengthening the plastic recycling supply chain and increasing recycling costs. Directly discarding large quantities of defective products also exacerbates plastic solid waste pollution, which does not meet the development requirements of green recycling and circular production in the injection molding industry.

[0004] Existing material handling equipment for downward-opening injection molds mostly relies on independent motors and cylinders to drive the clamping mechanism, requiring complex electrical control programs. This results in high equipment costs and a high failure rate. The plastic part can easily be damaged by falling directly after mold opening, and manual retrieval is inefficient. Conventional automated material handling devices separate the receiving and clamping actions, leading to poor coordination between the two power mechanisms and potential for detachment due to asynchronous material handling. Traditional clamping structures lack cushioning protection, and rigid clamps can easily scratch the surface of the plastic part. Furthermore, they lack an automatic reset mechanism, requiring an additional drive mechanism to release the clamps after each material handling operation, extending the work cycle. The overall equipment structure is cumbersome and difficult to achieve integrated mechanical linkage of receiving and clamping, making it unsuitable for low-cost adaptation to continuous automated injection molding production. Therefore, those skilled in the art have provided a fully automatic extraction device for injection molded products to solve the problems mentioned in the background. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a fully automatic removal device for injection molded products.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fully automatic removal device for injection molded products, comprising a main structure, a receiving structure, a clamping structure and a linkage structure, wherein the main structure comprises a base and a support frame, the base and the support frame being frame-shaped, and the support frame being fixedly placed on the upper end of the base;

[0007] The receiving structure is used to receive the product after injection molding. The receiving structure includes a hydraulic cylinder, a receiving frame, and a receiving platform. The hydraulic cylinder drives the receiving frame and the receiving platform to move longitudinally.

[0008] The clamping structure is used to clamp the injection molded part after it is received, so as to facilitate stability during the handling process. The clamping structure includes an assembly cylinder, a clamping block, a screw and a piston. The piston is longitudinally slidably installed inside the assembly cylinder. The screw is fixed at the lower end of the assembly cylinder. The clamping block is located inside the upper end of the assembly cylinder and performs relative rotational movement to clamp the injection molded part.

[0009] The linkage structure is linked with the receiving structure, converting the driving force of the receiving structure during longitudinal descent into the clamping force of the clamping blocks in the clamping structure. The linkage structure includes an installation cylinder, a second piston, a stopper rod, a cable, and a third rotating shaft. The second piston is longitudinally slidably installed inside the installation cylinder. A stopper rod is provided at the lower end of the second piston, and a cable connected to the rotating shaft is provided at the lower end of the stopper rod.

[0010] Preferably, mounting holes are provided at the four corners of the upper end of the support frame, the screw is inserted into the mounting holes, and a collar is sleeved on the outer wall of the screw.

[0011] Preferably, a support spring is provided between the collar and the assembly cylinder, the outer diameter of the collar is larger than the inner diameter of the mounting hole, the collar is fitted with the upper end of the support frame, and a nut is threaded onto the outer wall of the lower end of the screw, the upper end of which is fitted with the inner wall of the upper end of the support frame.

[0012] Preferably, the inner wall of the assembly cylinder is provided with a support ring, a spring is provided between the piston and the support ring, the inner wall of the clamping block is provided with anti-slip grooves, and a flexible cloth sleeve connected to the upper opening of the assembly cylinder is sleeved on the outer wall of the clamping block. The flexible cloth sleeve can be stretched and deformed, and seals the upper end of the assembly cylinder.

[0013] Preferably, the inner wall of the assembly cylinder is provided with two sets of symmetrically distributed bearing seats, and a rotating shaft is rotatably installed inside the bearing seats. A force-bearing bar is provided at the lower end of the clamping block, and a linkage ring is sleeved on the outer wall of the force-bearing bar. The linkage ring is affected by the longitudinal force of the piston, and the clamping block rotates and adjusts around the rotating shaft.

[0014] Preferably, the upper end of the piston is provided with a symmetrically distributed bearing seat two, the lower end of the linkage ring is provided with a connecting bar, and the lower end of the connecting bar is provided with a rotating shaft two rotatably installed inside the bearing seat two. The linkage ring rotates around the rotating shaft two as the axis, so that when the piston one pulls the linkage ring with longitudinal force, the linkage ring applies its own rotation angle to the force rod, thereby forcing the rotating shaft one to adjust its angle.

[0015] Preferably, the lower end of the receiving frame has an assembly groove, the telescopic end of the hydraulic cylinder is connected to the inner wall of the upper end of the assembly groove, and the upper end of the base is provided with a bracket for fixing the hydraulic cylinder.

[0016] Preferably, the receiving platform is located at the upper end of the receiving frame, the upper end of the receiving platform is provided with two sets of symmetrically distributed baffles, the lower end of the receiving frame is provided with guide plates on both sides, the upper end of the support frame is provided with guide rods that are longitudinally slidably inserted into the guide plates on both inner walls, and one end of the receiving frame is provided with a toothed plate.

[0017] Preferably, the lower end of the support frame is provided with a symmetrically distributed bearing seat three on one inner wall, the two ends of the rotating shaft three are rotatably installed inside the bearing three, the outer wall of the rotating shaft three is sleeved with two sets of gears, the gears are located on the longitudinal travel path of the gear plate, the outer wall of the rotating shaft is sleeved with symmetrically distributed limiting rings located between the gears, and the cable is located between the limiting rings.

[0018] Preferably, the upper end of the mounting cylinder is connected to two sets of primary tubes, the lower end of the primary tubes is connected to two sets of secondary tubes, the secondary tubes are connected to the lower end of the mounting cylinder, a sealing ring is embedded in the lower end of the mounting cylinder, the piston rod is fixed to the lower end of the piston and slidably installed inside the sealing ring, a spring is provided between the piston and the inner wall of the lower end of the mounting cylinder and sleeved on the outside of the piston rod, an oil hole is opened inside the piston, and the mounting cylinder, primary tubes and diode are filled with hydraulic oil.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] This invention is used in conjunction with an injection mold with its opening facing downwards. The receiving platform is vertically lifted to receive the open injection mold, and it also supports two separate injection molded products to prevent them from falling directly. During the descent of the receiving frame, which carries the receiving platform and the supported injection molded product, the toothed plate, through gears, drives the rotating shaft three to rotate, thereby winding the cable. At this time, the connecting piston two descends, generating a suction negative pressure inside the mounting cylinder. Through the linkage of the primary pipe, secondary pipe, and piston one, a negative pressure suction force is generated inside the mounting cylinder, which in turn moves the clamping blocks relative to each other, clamping the injection molded product that has entered the clamping blocks. After the base is connected to the mobile device, it facilitates the stability of product handling. The clamping structure avoids the involvement of external electronic equipment. Adaptive clamping is achieved after receiving the product through mechanical linkage. The flexible clamping blocks prevent damage to the product and supplement the clamping force. After the toothed plate is lifted and disengaged, piston one and piston two reset through elastic elements, causing the clamping blocks to open in linkage, improving transportation stability, saving manpower, and increasing the production efficiency of injection molded products. Attached Figure Description

[0021] Figure 1 This is a bottom-view three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a top-view, first-angle three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a top-view, second-angle three-dimensional structural diagram of the present invention;

[0024] Figure 4 This is a top-view three-dimensional structural diagram of the support frame of the present invention;

[0025] Figure 5 This is a top-view perspective view of the clamping structure of the present invention.

[0026] Figure 6 This is a top-view three-dimensional structural diagram of the piston of the present invention;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the mounting cylinder of the present invention in a main cross-section.

[0028] Figure 8 This is a top-section three-dimensional structural diagram of the diode of the present invention;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the assembly cylinder of the present invention in a main cross-section.

[0030] Figure 10 This is a three-dimensional structural diagram of the piston of the present invention viewed from below;

[0031] Figure 11 This is a side view of the three-dimensional structure of the clamping block of the present invention.

[0032] Figure label:

[0033] 100. Main structure; 101. Base; 102. Support frame; 103. Mounting holes;

[0034] 200. Receiving structure; 201. Support; 202. Hydraulic cylinder; 203. Receiving frame; 204. Guide plate; 205. Guide rod; 206. Receiving platform; 207. Baffle; 208. Assembly slot;

[0035] 300. Clamping structure; 301. Assembly cylinder; 302. Clamping block; 303. Flexible cloth sleeve; 304. Screw; 305. Support spring; 306. Collar; 307. Nut; 308. Piston 1; 309. Support ring; 310. Spring 1; 311. Anti-slip groove; 312. Bearing seat 1; 313. Rotating shaft 1; 314. Linkage ring; 315. Bearing seat 2; 316. Rotating shaft 2; 317. Connecting bar; 318. Force-bearing bar;

[0036] 400. Linkage structure; 401. Mounting cylinder; 402. Primary tube; 403. Secondary tube; 404. Spring II; 405. Plug rod; 406. Sealing ring; 407. Cable; 408. Gear; 409. Rotating shaft III; 410. Limiting ring; 411. Bearing housing III; 412. Gear plate; 413. Piston II. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1 to 11 The present invention provides four embodiments:

[0039] Example 1:

[0040] An automatic removal device for injection molded products includes a main structure 100, a receiving structure 200, a clamping structure 300, and a linkage structure 400. The main structure 100 includes a base 101 and a support frame 102. The base 101 and the support frame 102 are frame-shaped, and the support frame 102 is fixedly placed on the upper end of the base 101.

[0041] The receiving structure 200 is used to receive the injection-molded product. The receiving structure 200 includes a hydraulic cylinder 202, a receiving frame 203 and a receiving platform 206. The hydraulic cylinder 202 drives the receiving frame 203 and the receiving platform 206 to move longitudinally.

[0042] The clamping structure 300 is used to clamp the injection molded part after it is received, so as to facilitate stability during the handling process. The clamping structure 300 includes an assembly cylinder 301, a clamping block 302, a screw 304 and a piston 308. The piston 308 is longitudinally slidably installed inside the assembly cylinder 301. The screw 304 is fixed at the lower end of the assembly cylinder 301. The clamping block 302 is located inside the upper end of the assembly cylinder 301 and performs relative rotational movement to clamp the injection molded part.

[0043] The linkage structure 400 is linked with the receiving structure 200, converting the driving force of the receiving structure 200 during longitudinal descent into the clamping force of the clamping block 302 in the clamping structure 300. The linkage structure 400 includes an installation cylinder 401, a second piston 413, a stopper rod 405, a cable 407, and a third rotating shaft 409. The second piston 413 is longitudinally slidably installed inside the installation cylinder 401. A stopper rod 405 is provided at the lower end of the second piston 413, and a cable 407 connected to the rotating shaft is provided at the lower end of the stopper rod 405.

[0044] In this embodiment, the device is adapted to an injection mold with the opening facing downward. The entire set of actions relies on the hydraulic cylinder 202, the mechanical cable 407 for transmission and the hydraulic oil circuit to complete the fully automatic material handling. Before the injection mold opens, the hydraulic cylinder 202 extends and pushes the receiving frame 203 and the receiving platform 206 to move upward and longitudinally, close to the bottom of the mold cavity. After the ejection structure of the mold ejects the injection product, the receiving platform 206 supports the injection product that is about to leave the mold in advance, and the baffle 207 limits the workpiece to prevent it from shifting and avoids the plastic part from falling directly.

[0045] After the mold is opened, the hydraulic cylinder 202 retracts, driving the receiving frame 203 and the receiving platform 206, along with the injection molded parts, to move downwards synchronously. The toothed plate 412 on one side of the receiving frame 203 moves synchronously downwards. The toothed plate 412 meshes with the outer gear 408 of the rotating shaft 3 409, driving the rotating shaft 3 409 to rotate. The rotating shaft 3 409 winds up the cable 407, pulling down the stopper rod 405 and the piston 2 413. The piston 2 413 slides downwards inside the mounting cylinder 401, compressing the spring 2 404. A negative pressure is formed inside the mounting cylinder 401, and the internal hydraulic oil is transported into the assembly cylinder 301 through the primary pipe 402 and the secondary pipe 403.

[0046] Hydraulic oil pushes the piston 308 inside the assembly cylinder 301 to slide upward. The piston 308 pulls the linkage ring 314 through the bearing seat 315 and the rotating shaft 316. The linkage ring 314 squeezes the bottom force bar 318 of the clamping block 302. The clamping block 302 rotates inward around the rotating shaft 313, thus clamping the injection molded part. The anti-slip groove 311 on the inner side of the clamping block 302 increases the clamping friction, and the flexible cloth sleeve 303 on the outer side provides cushioning and protection, making it less likely for the plastic part to slip or be scratched during handling.

[0047] The overall base 101 of the device can be connected to a mobile conveying device, and the workpiece can be transferred after the clamping is stable. When the hydraulic cylinder 202 drives the receiving frame 203 to move upward and reset, the toothed plate 412 and the gear 408 disengage, the tension of the cable 407 disappears, the second spring 404 pushes the second piston 413 to reset, and the oil circuit pressure is released; at the same time, the first spring 310 pulls the first piston 308 downward, and the clamping block 302 rotates outward to release the plastic part, completing a single material picking cycle. The whole process relies on mechanical linkage and does not require additional electric control clamping power.

[0048] Fix the base 101 to the side moving mechanism of the injection molding machine. Assemble the clamping structure 300 with the four corner screws 304 of the support frame 102. Adjust the clearance between the guide rod 205 and the guide plate 204 to ensure smooth lifting of the receiving frame 203. Add hydraulic oil to the mounting cylinder 401 and all levels of pipelines, check for leaks, and drive the receiving platform 206 to rise below the mold outlet using the hydraulic cylinder 202. Adjust the height of the receiving platform 206 to ensure that the plastic part falls completely into the receiving platform 206 after the mold opens. The side baffles 207 limit and position the parts. The mold opens and releases the plastic part to the receiving platform 206. Hydraulic cylinder 202 retracts, driving the receiving frame 203 downward. Tooth plate 412 drives the rotating shaft to wind up cable 407. Hydraulic oil circuit linkage clamping block 302 clamps the product. The entire device moves out of the mold area with the mobile equipment, completing the workpiece transfer. Subsequently, hydraulic cylinder 202 lifts the receiving frame 203, tooth plate 412 disengages from gear 408, spring assembly resets, clamping block 302 automatically opens, completing unloading. After unloading, hydraulic cylinder 202 lifts the receiving platform 206 again, returning to the material picking station, repeating the above process, continuously cooperating with the injection molding machine to achieve uninterrupted automated material picking.

[0049] The system employs a purely mechanical hydraulic linkage structure 400, eliminating the need for additional electrically controlled clamping components such as motors and solenoid valves, thus reducing equipment procurement and maintenance costs. The receiving platform 206 pre-lifts the plastic part, preventing it from falling, bumping, deforming, or becoming unusable, thereby improving finished product yield. The clamping block 302 features anti-slip grooves 311 and a flexible cloth sleeve 303, preventing scratches on the plastic part surface during clamping. Material handling, clamping, and resetting are synchronized, eliminating the need for separate clamp opening and closing procedures, shortening production cycle time. The entire system reduces manual handling, avoids workplace injuries caused by high-temperature plastic parts and molds, and is suitable for continuous production lines. Relying on spring-assisted automatic resetting, the system has a simple and stable structure with a low failure rate, effectively improving the automation level and overall capacity of injection molding production.

[0050] This invention addresses the problem of plastic parts falling freely after mold opening when the mold faces downwards, resulting in easy collisions and damage, and a high defect rate. It also improves upon the shortcomings of manual workpiece picking, such as production line interruptions, high labor costs, and safety hazards. Furthermore, it overcomes the issues of traditional material handling equipment where the receiving and clamping processes are controlled separately by two sets of power systems, leading to asynchronous actions, easy part drops, numerous electrical control components, complex structures, and high failure rates.

[0051] Example 2:

[0052] The receiving platform 206 is located at the upper end of the receiving frame 203. Two sets of symmetrically distributed baffles 207 are provided at the upper end of the receiving platform 206. Guide plates 204 are provided on both sides of the lower end of the receiving frame 203. Guide rods 205 that slide longitudinally and are inserted into the guide plates 204 are provided on the inner walls of both sides of the upper end of the support frame 102.

[0053] Mounting holes 103 are provided at the four corners of the upper end of the support frame 102. The screw 304 is inserted into the mounting hole 103, and a collar 306 is sleeved on the outer wall of the screw 304.

[0054] A support spring 305 is provided between the collar 306 and the assembly cylinder 301. The outer diameter of the collar 306 is larger than the inner diameter of the mounting hole 103. The collar 306 is in contact with the upper end of the support frame 102. The lower end of the screw 304 is threaded with a nut 307 whose upper end is in contact with the inner wall of the upper end of the support frame 102.

[0055] In this embodiment, a guide limit and clamping buffer assembly structure is added to the basic material picking structure to complete the stable material picking operation in conjunction with the lifting and receiving mechanism. Before the injection mold opens, the hydraulic cylinder 202 drives the receiving frame 203 to slide upward along the guide rod 205 of the support frame 102. The guide rod 205 and the guide plates 204 on both sides of the receiving frame 203 are longitudinally inserted and matched to restrict the receiving frame 203 to only be raised and lowered vertically, so as to avoid left and right deviation and swaying during the lifting and lowering process. The receiving platform 206 is raised to the bottom of the mold along with the receiving frame 203. The symmetrical baffles 207 form a limiting area. The plastic parts falling off the mold are blocked and limited by the baffles 207 to prevent the plastic parts from sliding out of the receiving platform 206.

[0056] The clamping structure 300 is fixed to the support frame 102 by the four corner screws 304. The screws 304 pass through the mounting holes 103. The collar 306 with a larger outer diameter fits against the top surface of the support frame 102 and is locked with the bottom nut 307 to achieve vertical positioning of the assembly cylinder 301. The support spring 305 is clamped between the collar 306 and the assembly cylinder 301 to provide vertical buffer margin for the clamping structure 300. When the receiving frame 203 moves down to pick up the material, the guide plate 204 slides smoothly down along the guide rod 205. The toothed plate 412 drives the rotating shaft 409 to wind up the cable 407. The hydraulic oil circuit drives the piston 308 to move up, pulling the clamping block 302 to rotate and clamp the plastic part.

[0057] If the plastic part is subjected to pressure or the equipment vibrates slightly during the transfer, the support spring 305 can compress the buffer assembly cylinder 301 to offset the impact on the clamping structure 300, preventing the clamping block 302 from damaging the plastic part or the screw 304 from being deformed by force. After the transfer is completed, the receiving frame 203 is raised, the guide plate 204 moves upward along the guide rod 205 to reset, the toothed plate 412 disengages from the gear 408, the oil circuit is depressurized, the clamping block 302 releases the plastic part, and the support spring 305 rebounds to drive the assembly cylinder 301 to reset. The entire lifting, clamping, and limiting action relies on the synchronous linkage of the mechanical structure. The guide structure constrains the movement trajectory of the receiving frame 203 throughout the process, the buffer structure reduces the rigid impact of clamping, and the assembly structure is easy to disassemble and assemble, ensuring continuous and stable material handling.

[0058] Insert the four screws 304 into the four corner mounting holes 103 of the support frame 102, put the collar 306 on, tighten the nut 307 at the lower end to clamp the support frame 102, install the support spring 305 between the collar 306 and the assembly cylinder 301 to complete the assembly of the clamping structure 300, check that the support spring 305 extends and retracts smoothly without jamming, align the guide plates 204 on both sides of the receiving frame 203 with the inner guide rod 205 of the support frame 102 and insert them, adjust the gap to ensure that the receiving frame 203 rises and falls without jamming or swaying left and right.

[0059] Hydraulic cylinder 202 pushes the receiving frame 203 upward, adjusting the height of the receiving platform 206 so that the symmetrical baffles 207 are directly opposite the mold discharge position. The baffles 207 form a barrier to prevent the plastic part from slipping. The mold opens, and the plastic part falls inside the baffles 207 on the receiving platform 206. Hydraulic cylinder 202 drives the receiving frame 203 to descend smoothly along the guide rod 205. The linkage mechanism drives the clamping block 302 to clamp the plastic part, and the support spring 305 buffers the transfer vibration. The device moves out of the mold area to complete the transfer. Hydraulic cylinder 202 lifts the receiving frame 203, the guide plate 204 moves upward along the guide rod 205 to reset, the oil circuit is depressurized, the clamping block 302 releases the workpiece, and the support spring 305 springs back to reset, entering the next round of material handling cycle.

[0060] The guide rod 205 and guide plate 204 work together to achieve precise vertical lifting and lowering of the receiving frame 203, eliminating lifting and lowering deviation and preventing plastic parts from slipping off the receiving platform 206. The symmetrical baffles 207 on the receiving platform 206 limit and position the plastic parts, preventing them from tipping over and falling. The locking structure of the four corner screws 304, collars 306 and nuts 307 is easy to assemble and disassemble. The support spring 305 provides elastic support and relieves the stress on the screws 304. The entire guiding, limiting and buffering structure is purely mechanical, requiring no additional electrical control. The structure is stable and durable, reducing scratches and bumps on plastic parts, lowering the defect rate, eliminating the need for manual handling of scattered workpieces, and improving the stability of automated material handling and the service life of the equipment.

[0061] The receiving frame 203 avoids deviation and swaying during lifting and lowering, and prevents plastic parts from slipping and falling off the receiving platform 206. It overcomes the defects of rigid fixing of clamping structure 300, easy damage to plastic parts due to transport vibration, and deformation of screw 304 under long-term stress. It improves the problems of cumbersome disassembly and assembly, poor positioning accuracy, easy deviation of workpiece without limit, and insufficient material picking stability of traditional clamping mechanism.

[0062] Example 3:

[0063] The inner wall of the assembly cylinder 301 is provided with a support ring 309, and a spring 310 is provided between the piston 308 and the support ring 309. The inner wall of the clamping block 302 is provided with anti-slip grooves 311. The outer wall of the clamping block 302 is fitted with a flexible cloth sleeve 303 that is connected to the upper opening of the assembly cylinder 301. The flexible cloth sleeve 303 can be stretched and deformed, and seals the upper end of the assembly cylinder 301.

[0064] The inner wall of the assembly cylinder 301 is provided with two sets of symmetrically distributed bearing seats 312. The bearing seats 312 are rotatably mounted with a rotating shaft 313. The lower end of the clamping block 302 is provided with a force-bearing bar 318. The outer wall of the force-bearing bar 318 is sleeved with a linkage ring 314. The linkage ring 314 is affected by the longitudinal force of the piston 308. The clamping block 302 rotates and adjusts around the rotating shaft 313 as the axis.

[0065] The piston has a symmetrically distributed bearing housing 315 at its upper end, and a connecting bar 317 at its lower end. The connecting bar 317 has a rotating shaft 316 rotatably mounted inside the bearing housing 315 at its lower end. The linkage ring 314 rotates around the rotating shaft 316, so that when the piston 308 pulls the linkage ring 314 with longitudinal force, the linkage ring 314 applies its own rotation angle to the force rod, thereby forcing the rotating shaft 313 to adjust its angle.

[0066] The lower end of the receiving frame 203 has an assembly groove 208 inside. The telescopic end of the hydraulic cylinder 202 is connected to the upper inner wall of the assembly groove 208. The upper end of the base 101 is provided with a bracket 201 for fixing the hydraulic cylinder 202.

[0067] In this embodiment, the hydraulic cylinder 202 is stably fixed by the base 101 and the bracket 201. The telescopic end is connected to the bottom assembly groove 208 of the receiving frame 203, which precisely drives the overall lifting and lowering of the receiving frame 203. When the receiving platform 206 receives the injection molded product and moves downward, the linkage oil circuit drives the piston 308 in the assembly cylinder 301 to move upward. The upper bearing seat 315 of the piston 308 is equipped with the rotating shaft 316. The linkage ring 314 is pulled by the connecting strip 317. The linkage ring 314 deflects around the rotating shaft 316 and presses the bottom force bar 318 of the clamping block 302 downward. The clamping block 302 forms a rotation fulcrum based on the bearing seat 312 and the rotating shaft 313 on the inner wall of the assembly cylinder 301. After being subjected to force, it retracts inward to complete the clamping.

[0068] The spring 310 between piston 308 and support ring 309 continuously provides reset force. During clamping, the anti-slip groove 311 on the inner side of clamping block 302 increases the friction with the plastic part to prevent slippage during transfer. The outer flexible cloth sleeve 303 stretches and deforms with the opening and closing of clamping block 302, always sealing the upper end of assembly cylinder 301 to prevent dust and debris from entering the cylinder and contaminating the hydraulic oil circuit.

[0069] During the downward clamping phase, piston 308 compresses spring 310 upward to store elastic force; when the receiving frame 203 is raised and the negative pressure of the linkage oil circuit disappears, spring 310 pulls piston 308 downward to reset, linkage ring 314 releases the pressure on force bar 318, and clamping block 302 automatically rotates outward to open, completing the unloading.

[0070] The flexible cloth sleeve 303 serves both sealing and cushioning functions. When the clamping block 302 clamps the plastic part, the cloth sleeve provides cushioning and rigid contact to prevent scratching the workpiece. The hydraulic cylinder 202 assembly slot 208 connection structure ensures that the power output is coaxial and without offset. The entire transmission relies on the double rotating shaft hinge to realize the force direction transmission, converting the longitudinal linear motion of the piston into the rotational clamping action of the clamping block 302. The entire process is mechanically linked, and clamping, sealing, cushioning, and resetting are completed synchronously in one integrated manner.

[0071] The hydraulic cylinder 202 is fixed on the bracket 201 of the base 101. The telescopic head of the hydraulic cylinder 202 is inserted into the bottom assembly groove 208 of the receiving frame 203 and locked in place to ensure stable and non-deviation-free lifting power output. A support ring 309 is installed inside the assembly cylinder 301, a spring 310 is placed, and a piston 308 is installed. Bearing seats 312 and rotating shafts 313 are symmetrically installed inside the cylinder. The clamping block 302 with the force-bearing bar 318 is assembled in place, and the linkage ring 314 is sleeved on the outside of the force-bearing bar 318. The connection is made through the connecting bar 317 and the rotating shaft. 316 is hinged to the upper bearing seat 315 of piston 308. A flexible cloth sleeve 303 is fitted on the outside of the clamping block 302. The two ends of the cloth sleeve are fixed to the upper opening of the assembly cylinder 301 and the outer wall of the clamping block 302, respectively, to ensure that the cloth sleeve can be freely stretched and the cylinder opening is sealed when opening and closing. The mold opens and the material is dropped to the receiving platform 206. The hydraulic cylinder 202 moves down and the linkage oil circuit pushes the piston 308. The clamping block 302 clamps the plastic part for transfer. After the receiving frame 203 is lifted, the spring 310 returns to its original position, the clamping block 302 releases the part, the cloth sleeve returns to its original position and seals the cylinder opening, and the operation continues in a cycle.

[0072] The dual-shaft hinge structure smoothly converts the longitudinal thrust of the piston into the rotational clamping force of the clamping block 302, ensuring smooth and unhindered transmission. The anti-slip groove 311 on the clamping block 302 enhances clamping friction, preventing parts from falling out during transport. The flexible cloth sleeve 303 combines sealing and cushioning functions, isolating dust to protect the internal hydraulic structure while preventing the rigid clamping block 302 from scratching the plastic parts. Spring 310 allows the clamping block 302 to open automatically quickly, eliminating the need for an additional drive mechanism. The hydraulic cylinder 202 is directly connected to the receiving frame 203 via the assembly slot 208, ensuring direct and efficient power transmission. The overall structure integrates clamping, buffering, sealing, and self-resetting functions, reducing external accessories, lowering the failure rate, improving the yield of finished plastic parts, and extending the service life of the device. It solves the problems of uneven force distribution and easy slippage and part drop caused by the linear push clamping of traditional clamping mechanisms; overcomes the defect of easy dust entering the assembly cylinder 301 and causing oil circuit blockage; improves the shortcomings of rigid clamping block 302 directly clamping and scratching plastic parts and the need for additional power for clamp unloading; and solves the problems of loose connection between hydraulic cylinder 202 and receiving frame 203 and large power transmission loss.

[0073] Example 4:

[0074] One end of the receiving frame 203 is provided with a toothed plate 412.

[0075] The lower end of the support frame 102 has a symmetrically distributed bearing seat 3 411 on one inner wall. The two ends of the rotating shaft 3 409 are rotatably installed inside the bearing 3. The outer wall of the rotating shaft 3 409 is sleeved with two sets of gears 408. The gears 408 are located on the longitudinal travel path of the gear plate 412. The outer wall of the rotating shaft is sleeved with symmetrically distributed limiting rings 410 located between the gears 408. The cable 407 is located between the limiting rings 410.

[0076] The upper end of the mounting cylinder 401 is connected to two sets of primary tubes 402, and the lower end of the primary tubes 402 is connected to two sets of secondary tubes 403. The secondary tubes 403 are connected to the lower end of the assembly cylinder 301. A sealing ring 406 is embedded in the lower end of the mounting cylinder 401. The piston rod 405 is fixed at the lower end of the piston 413 and slidably installed inside the sealing ring 406. A spring 404 is provided between the piston and the inner wall of the lower end of the mounting cylinder 401 and sleeved on the outside of the piston rod 405. An oil hole is opened inside the piston 413. The mounting cylinder 401, the primary tubes 402 and the diode are filled with hydraulic oil.

[0077] In this embodiment, after the injection molded part falls onto the receiving platform 206, the hydraulic cylinder 202 drives the receiving frame 203 to move downward. The toothed plate 412 at the end of the receiving frame 203 moves downward synchronously. After the toothed plate 412 descends a certain distance, it meshes with the two sets of gears 408 on the rotating shaft 3 409, causing the rotating shaft 3 409 to rotate within the bearing seat 3 411. The two sets of limiting rings 410 on the rotating shaft 3 409 limit the position of the cable 407 to prevent the cable 407 from deviating to the left or right and derailing. The rotating shaft rotates to wind up the cable 407 and pulls the stopper rod 405 downward. The stopper rod 405 passes through the bottom sealing ring 406 of the mounting cylinder 401 and pulls the piston 2 413 downward.

[0078] Piston 2 413 compresses spring 2 404 downwards, increasing the internal volume of mounting cylinder 401 and creating negative pressure. Hydraulic oil inside the cylinder flows through primary pipe 402 and secondary pipe 403 to the bottom of assembly cylinder 301, pushing piston 1 308 upwards to complete the clamping action of clamping block 302. Piston 2 413 opens an oil hole to ensure the circulation of hydraulic oil inside the oil circuit. Sealing ring 406 seals the bottom of the cylinder to prevent hydraulic oil leakage.

[0079] When the material handling and transfer are completed, the hydraulic cylinder 202 drives the receiving frame 203 to reset upwards. The toothed plate 412 then moves upwards and disengages from the gear 408. The tension in the cable 407 disappears, and the compressed spring 404 rebounds, pushing the piston 413 upwards. The internal pressure of the mounting cylinder 401 is restored, and the hydraulic oil flows back. The piston 308 in the assembly cylinder 301 loses its hydraulic thrust and resets with the spring 310. The clamping block 302 rotates and releases the plastic part. The limit ring 410 always constrains the movement range of the cable 407, ensuring that it does not deviate during the winding and unwinding process. The entire gear 408 transmission is linked with the hydraulic circuit, directly converting the mechanical kinetic energy of the receiving frame 203 downwards into clamping hydraulic power. No independent hydraulic pump station or electrical control components are required throughout the process. The mechanical and hydraulic systems are synchronized, resulting in a high degree of matching between actions.

[0080] A bearing housing 411 is installed at the lower end of the support frame 102. A rotating shaft 409 is inserted, and two sets of gears 408 and a limiting ring 410 are fitted together. The cable 407 is fixed between the two limiting rings 410 to ensure that the cable 407 has no offset space. The installation cylinder 401, the first-stage pipe 402, and the second-stage pipe 403 are connected to make the pipeline connect the installation cylinder 401 and the inner cavity of the assembly cylinder 301. A sealing ring 406 is embedded in the bottom of the installation cylinder 401. A piston 413 with a stopper rod 405 is installed in the cylinder. The stopper rod 405 passes through the sealing ring 406. A spring 404 is fitted below the piston 413. The spring 404 is connected to the installation cylinder 401 and each stage of pipeline through a reserved channel. Fill with hydraulic oil, purge air from the pipeline, check for oil leakage in sealing ring 406, test that piston 2 413 slides smoothly, adjust the height of toothed plate 412 of receiving frame 203 to ensure that toothed plate 412 fully engages gear 408 when receiving frame 203 descends and disengages smoothly when ascending; adjust the length of cable 407 so that the stroke of piston 2 413 matches the opening and closing range of clamping block 302. After the mold opens, receiving frame 203 descends, toothed plate 412 drives gear 408 to retract the cable, and hydraulically drives clamping block 302 to clamp the workpiece; after transfer is completed, receiving frame 203 is raised, spring 2 404 resets and releases pressure, clamping block 302 releases the workpiece, and the cycle is completed for fully automatic material handling.

[0081] The gear plate 412 and gear 408, in conjunction with the limiting ring 410, provide stable power transmission. The cable 407 is less prone to deviation and wear, ensuring high transmission reliability. A sealed multi-stage hydraulic pipeline achieves lossless power transmission, the sealing ring 406 prevents oil leakage, and the oil hole ensures smooth oil circulation. Spring 404 automatically resets piston 413, releasing clamping pressure and eliminating the need for a separate hydraulic reversing device. The entire clamping hydraulic circuit is driven by the lifting mechanism 203, requiring no additional hydraulic power source, reducing equipment costs. The strong synchronization between mechanical transmission and hydraulic linkage ensures precise matching of material handling and clamping actions, reducing the risk of workpiece slippage. The sealed oil circuit structure reduces equipment maintenance frequency and is suitable for long-term continuous injection molding production.

[0082] The above specific embodiments are merely several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0083] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fully automatic removal device for injection molded products, comprising a main structure (100), a receiving structure (200), a clamping structure (300), and a linkage structure (400), characterized in that: The main structure (100) includes a base (101) and a support frame (102). The base (101) and the support frame (102) are frame-shaped, and the support frame (102) is fixed to the upper end of the base (101). The receiving structure (200) is used to receive the product after injection molding. The receiving structure (200) includes a hydraulic cylinder (202), a receiving frame (203) and a receiving platform (206). The hydraulic cylinder (202) drives the receiving frame (203) and the receiving platform (206) to move longitudinally. The clamping structure (300) is used to clamp the injection molded part after receiving it, so as to facilitate stability during the handling process. The clamping structure (300) includes an assembly cylinder (301), a clamping block (302), a screw (304) and a piston (308). The piston (308) is longitudinally slidably installed inside the assembly cylinder (301). The screw (304) is fixed at the lower end of the assembly cylinder (301). The clamping block (302) is located inside the upper end of the assembly cylinder (301) and performs relative rotational movement to clamp the injection molded part. The linkage structure (400) is linked with the receiving structure (200) to convert the driving force of the receiving structure (200) when it descends longitudinally into the clamping force of the clamping block (302) in the clamping structure (300) relative to the movement of the clamping block (302). The linkage structure (400) includes a mounting cylinder (401), a second piston (413), a stopper rod (405), a cable (407) and a third rotating shaft (409). The second piston (413) is longitudinally slidably installed inside the mounting cylinder (401). A stopper rod (405) is provided at the lower end of the second piston (413). A cable (407) connected to the rotating shaft is provided at the lower end of the stopper rod (405).

2. The fully automatic removal device for injection molded products according to claim 1, characterized in that: The support frame (102) has mounting holes (103) at the four corners of its upper end. The screw (304) is inserted into the mounting hole (103), and a collar (306) is sleeved on the outer wall of the screw (304).

3. The fully automatic removal device for injection molded products according to claim 2, characterized in that: A support spring (305) is provided between the collar (306) and the assembly cylinder (301). The outer diameter of the collar (306) is larger than the inner diameter of the mounting hole (103). The collar (306) is attached to the upper end of the support frame (102). The lower end of the screw (304) is threaded with a nut (307) whose upper end is attached to the inner wall of the upper end of the support frame (102).

4. The fully automatic removal device for injection molded products according to claim 1, characterized in that: The inner wall of the assembly cylinder (301) is provided with a support ring (309), and a spring (310) is provided between the piston (308) and the support ring (309). The inner wall of the clamping block (302) is provided with anti-slip grooves (311). The outer wall of the clamping block (302) is fitted with a flexible cloth sleeve (303) that is connected to the upper opening of the assembly cylinder (301). The flexible cloth sleeve (303) can be stretched and deformed, and seals the upper end of the assembly cylinder (301).

5. The fully automatic removal device for injection molded products according to claim 1, characterized in that: The inner wall of the assembly cylinder (301) is provided with two sets of symmetrically distributed bearing seats (312). A rotating shaft (313) is rotatably installed inside the bearing seat (312). A force-bearing strip (318) is provided at the lower end of the clamping block (302). A linkage ring (314) is sleeved on the outer wall of the force-bearing strip (318). The linkage ring (314) is affected by the longitudinal force of the piston (308). The clamping block (302) rotates and adjusts around the rotating shaft (313) as the axis.

6. The fully automatic removal device for injection molded products according to claim 5, characterized in that: The piston has a symmetrically distributed bearing seat 2 (315) at its upper end, and a connecting strip (317) is provided at the lower end of the linkage ring (314). The connecting strip (317) has a rotating shaft 2 (316) rotatably installed inside the bearing seat 2 (315) at its lower end. The linkage ring (314) rotates around the rotating shaft 2 (316) as its axis. When the piston 1 (308) pulls the linkage ring (314) with longitudinal force, the linkage ring (314) applies its own rotation angle to the force rod, thereby forcing the rotating shaft 1 (313) to adjust its angle.

7. The fully automatic removal device for injection molded products according to claim 1, characterized in that: The lower end of the receiving frame (203) is provided with an assembly groove (208), the telescopic end of the hydraulic cylinder (202) is connected to the upper inner wall of the assembly groove (208), and the upper end of the base (101) is provided with a bracket (201) for fixing the hydraulic cylinder (202).

8. The fully automatic removal device for injection molded products according to claim 1, characterized in that: The receiving platform (206) is located at the upper end of the receiving frame (203). The upper end of the receiving platform (206) is provided with two sets of baffles (207) that are symmetrically distributed. The lower end of the receiving frame (203) is provided with guide plates (204) on both sides. The upper end of the support frame (102) is provided with guide rods (205) that are longitudinally slidably inserted into the guide plates (204). One end of the receiving frame (203) is provided with a toothed plate (412).

9. The fully automatic removal device for injection molded products according to claim 8, characterized in that: The support frame (102) has a symmetrically distributed bearing seat three (411) on the inner wall of one side. The two ends of the rotating shaft three (409) are rotatably installed inside the bearing three. The outer wall of the rotating shaft three (409) is sleeved with two sets of gears (408). The gears (408) are located on the longitudinal travel path of the tooth plate (412). The outer wall of the rotating shaft is sleeved with symmetrically distributed limiting rings (410) located between the gears (408). The cable (407) is located between the limiting rings (410).

10. The fully automatic removal device for injection molded products according to claim 9, characterized in that: The upper end of the mounting cylinder (401) is connected to two sets of primary tubes (402), and the lower end of the primary tubes (402) is connected to two sets of secondary tubes (403). The secondary tubes (403) are connected to the lower end of the assembly cylinder (301). A sealing ring (406) is embedded in the lower end of the mounting cylinder (401). The piston rod (405) is fixed at the lower end of the piston (413) and slidably installed inside the sealing ring (406). A spring (404) is provided between the piston and the inner wall of the lower end of the mounting cylinder (401) and sleeved on the outside of the piston rod (405). An oil hole is opened inside the piston (413). The mounting cylinder (401), the primary tubes (402) and the diode are filled with hydraulic oil.

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