Automatic demolding and unloading system for rubber part injection production

Abstract

The application relates to an automatic demolding and unloading system for rubber part injection molding production and relates to the field of injection molding production equipment. The automatic demolding and unloading system comprises a rack, an injection molding device and a demolding device. The injection molding device comprises an injection molding mechanism and a molding mechanism. The molding mechanism comprises an upper mold, a middle mold and a lower mold. The upper mold is connected with the injection molding mechanism. The middle mold is placed on the lower mold. The lower mold is slidingly connected with the rack. The demolding device comprises a horizontal moving mechanism, a demolding mechanism and a lifting mechanism. The demolding mechanism is located on one side of the injection molding device. The demolding mechanism comprises a top plate, a plurality of demolding columns and a demolding driving piece. The horizontal moving mechanism is used for driving the lower mold to move towards the direction of being close to or far away from the top of the top plate. The lifting mechanism is used for lifting the middle mold so that the middle mold is separated from the lower mold. A plurality of injection molding cavities are formed on the middle mold. The demolding columns correspond to the injection molding cavities. The demolding driving piece is connected with the top plate. The automatic demolding and unloading system realizes automatic demolding and unloading treatment of injection molded rubber parts, is simple to operate, has high automation degree and effectively improves injection molding production and processing efficiency.

Description

Technical Field

[0001] This application relates to the field of injection molding production equipment, and in particular to an automatic demolding and unloading system for injection molding of rubber parts. Background Technology

[0002] The principle of injection molding is to add granular or powdered raw materials into the hopper of the injection unit. The raw materials are heated and melted into a flowing state. Driven by the screw or piston of the injection unit, they enter the mold cavity through the nozzle and the mold's gating system, where they harden and solidify. Injection molding is one of the common processing methods for producing rubber parts. The clamping device of a vertical injection molding machine is aligned with the axis of the injection unit and perpendicular to the ground. It has advantages such as small footprint, convenient mold assembly and disassembly, easy insert installation, more uniform plasticization of materials falling from the hopper, and easy automation and multi-machine automatic line management.

[0003] Regarding the aforementioned technologies, the inventors believe that after injection molding, the rubber parts need to be manually removed from the open mold cavity, which is inconvenient and affects production efficiency. Summary of the Invention

[0004] To address the aforementioned issues, this application provides an automatic demolding and unloading system for rubber part injection molding production.

[0005] This application provides an automatic demolding and unloading system for rubber part injection molding production, which adopts the following technical solution:

[0006] An automatic demolding and unloading system for injection molding of rubber parts includes a frame, an injection unit, and a demolding device. The injection unit includes an injection mechanism and a molding mechanism. The molding mechanism includes an upper mold, a middle mold, and a lower mold that are adapted to each other. The upper mold is connected to the injection mechanism, the middle mold is placed on the lower mold, and the lower mold is slidably connected to the frame. The demolding device includes a traversing mechanism, a demolding mechanism, and a lifting mechanism. The demolding mechanism is located on one side of the injection unit and includes a top plate, a plurality of demolding pillars disposed on the top plate, and a demolding drive component. The traversing mechanism is used to drive the lower mold to move towards or away from the top of the top plate. The lifting mechanism is used to lift the middle mold, so that the middle mold is separated from the lower mold. A plurality of injection cavities are formed on the middle mold. The demolding pillars correspond to the injection cavities. The output end of the demolding drive component is connected to the top plate and is used to drive the top plate to move towards or away from the middle mold. The demolding pillars are used to eject the injection molded part from the injection cavities.

[0007] By adopting the above technical solution, the raw material is injected into the molding mechanism through the injection molding mechanism and formed. Then, the lateral movement mechanism moves the lower mold to the top of the top plate, and the lifting mechanism lifts the middle mold, causing the middle mold to separate from the lower mold, and the injection molded part separates from the lower mold along with the middle mold. After that, the lateral movement mechanism starts again, moving the lower mold to the bottom of the upper mold. Then, the lifting mechanism starts, lowering the middle mold back to the starting position. Next, the demolding mechanism starts, and the demolding drive component drives the top plate and the demolding pins on the top plate to move towards the middle mold until the demolding pins penetrate the injection cavity of the middle mold and eject the injection molded part from the injection cavity, thereby realizing the automatic demolding of the injection molded part. The operation is simple, the degree of automation is high, and the efficiency of injection molding production is effectively improved.

[0008] Preferably, the frame is connected to a drive mounting plate, which is located at the bottom of the top plate. The demolding drive component is disposed on the drive mounting plate. A plurality of demolding guide rods are connected to the side of the top plate near the drive mounting plate. The end of each demolding guide rod away from the top plate passes through the drive mounting plate and is slidably connected to the drive mounting plate.

[0009] By adopting the above technical solution, when the demolding drive component drives the top plate and the demolding pillars on the top plate to move, the guide rod slides within the drive mounting plate. The guide rod plays a good guiding role in the movement of the top plate, ensuring the stability and reliability of the demolding lifting process.

[0010] Preferably, the lifting mechanism is connected to the frame. The lifting mechanism includes a lifting drive and a lifting block. The lifting block is located on both sides of the middle mold moving direction. Inserts are fixed on both sides of the middle mold moving direction. The lifting block has a lifting slot for inserting the inserts. The output end of the lifting drive is connected to the lifting block. The lifting drive is used to drive the lifting block to move along the plate surface perpendicular to the middle mold.

[0011] By adopting the above technical solution, when the horizontal movement mechanism drives the lower mold to move to the top of the top plate, the middle mold moves synchronously with the lower mold. The inserts on the middle mold are inserted into the lifting slots of the lifting blocks located on both sides of the middle mold. Then, when the lifting drive component drives the lifting blocks to move, the lifting blocks drive the middle mold to move through the lifting slots.

[0012] Preferably, the lifting drive component includes a lifting cylinder, a lifting connecting rod, and a lifting synchronization frame. The lifting cylinder is disposed on the side of the drive mounting plate away from the top plate. The piston rod of the lifting cylinder is connected to the lifting synchronization frame. One end of the lifting connecting rod is connected to the lifting synchronization frame, and the other end of the lifting connecting rod is connected to the lifting locking block.

[0013] By adopting the above technical solution, the lifting cylinder drives the lifting timing frame to move through the piston rod, and the lifting timing frame drives each lifting block to move through the lifting connecting rod, so as to lift the middle mold. The setting of the lifting timing frame allows the lifting blocks located on both sides of the middle mold to move synchronously under the action of the lifting connecting rod, thereby improving the stability of the middle mold during the lifting process and making it less likely for the middle mold to tilt during the lifting process.

[0014] Preferably, the frame includes a base, an injection molding top frame, and a cantilever frame. The base and the injection molding top frame are fixed relative to each other. The cantilever frame is located between the base and the injection molding top frame. The lower mold is slidably connected to the cantilever frame. The demolding mechanism and the traversing mechanism are both mounted on the cantilever frame. An opening mechanism is provided between the base and the cantilever frame. The opening mechanism is used to drive the cantilever frame to move closer to or further away from the upper mold.

[0015] By adopting the above technical solution, the cantilever frame is connected between the base and the injection molding top frame through the mold opening mechanism. The mold opening mechanism can drive the cantilever frame to slide between the machine base and the injection molding top frame. Thus, after the material is injection molded in the molding mechanism, the mold opening mechanism drives the lower mold and the middle mold to move downward through the cantilever frame and separate from the upper mold, thereby realizing the mold opening, so as to facilitate the subsequent removal of the injection molded parts.

[0016] Preferably, the mold opening mechanism includes a mold opening drive component and a plurality of guide pillars. The guide pillars are disposed between the injection molding top frame and the machine base. The two ends of the guide pillars are fixedly connected to the injection molding top frame and the machine base, respectively. The guide pillars pass through the cantilever frame. The cantilever frame is slidably connected to the guide pillars. The output end of the mold opening drive component is connected to the cantilever frame and is used to drive the cantilever frame to slide along the axial direction of the guide pillars.

[0017] By adopting the above technical solution, the injection molding top frame and the machine base are relatively fixed by guide pillars, and the guide pillars are inserted into the cantilever frame. When the mold opening drive component drives the cantilever frame to slide up and down, the guide pillars play a guiding and positioning role for the movement of the cantilever frame.

[0018] Preferably, the lateral movement mechanism includes a lateral movement cylinder, a lateral movement connecting rod, and a reversing plate. The lateral movement cylinder is mounted on the cantilever frame, and the piston rod of the lateral movement cylinder is connected to the reversing plate. The lateral movement connecting rod is located at one end of the reversing plate near the lateral movement cylinder, and the end of the lateral movement connecting rod away from the reversing plate is connected to the lower mold.

[0019] By adopting the above technical solution, the transverse cylinder drives the reversing plate to move through the piston rod, and then the reversing plate drives the lower mold to slide on the cantilever frame through the transverse connecting rod. The setting of the reversing plate plays a reversing role in the layout of the transverse cylinder, reducing the space occupied by the transverse mechanism.

[0020] Preferably, it also includes an unloading device, which includes a lifting mechanism, a translation mechanism, and a clamping mechanism. An unloading bracket is fixedly connected to the side of the injection molding ejector near the demolding device. The unloading device is installed on the unloading bracket. The clamping mechanism includes a clamping plate and several grippers disposed on the clamping plate. The grippers are located at the top of the intermediate mold and are used to grip the injection molded part. The output end of the lifting mechanism is connected to the clamping plate and is used to drive the clamping plate to move towards or away from the intermediate mold. The output end of the translation mechanism is connected to the clamping plate and is used to drive the clamping plate to move along a direction parallel to the plate surface of the intermediate mold.

[0021] By adopting the above technical solution, after the demolding device ejects the injection molded part from the forming through hole of the middle mold, the unloading device is activated. The lifting mechanism drives the clamping mechanism to move towards the middle mold. After the clamping jaws grab the injection molded part, the lifting mechanism drives the clamping jaws to move upward, so that the injection molded part is completely separated from the middle mold. Subsequently, the translation mechanism is activated, driving the clamping jaws to move to one side to the receiving end. Then, the clamping jaws release their gripping effect on the injection molded part, thereby completing the unloading of the injection molded part.

[0022] Preferably, a cleaning brush is provided on the side of the clamping plate near the gripper, and the cleaning brush is arranged along the driving direction perpendicular to the translation mechanism.

[0023] By adopting the above technical solution, after the unloading assembly completes the unloading of the injection molded part, the clamping plate moves towards the upper surface of the intermediate mold under the action of the lifting mechanism and the translation mechanism until the cleaning brush comes into contact with the upper surface of the intermediate mold. Then, the translation mechanism drives the clamping plate to move, and then the cleaning brush can sweep across the upper surface of the intermediate mold to remove injection mold residues and other contaminants from the surface of the intermediate mold, thus ensuring the product quality of subsequent continuous injection molding production.

[0024] Preferably, the clamping plate is provided with a nozzle assembly, which is used to spray a release agent onto the surface of the intermediate mold.

[0025] By adopting the above technical solution, when the translation mechanism drives the clamping plate to sweep across the middle mold, the nozzle assembly sprays release agent onto the upper surface of the middle mold, so that the injection molded part can easily detach from the injection cavity of the middle mold during subsequent injection molding production, ensuring the smoothness of subsequent demolding.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application realizes automatic demolding and unloading of injection molded rubber parts, which is simple to operate, highly automated, and effectively improves the efficiency of injection molding production and processing;

[0028] 2. By setting up cleaning brushes, the surface of the intermediate mold can be cleaned of injection molding residues, ensuring the quality of products in subsequent continuous injection molding production;

[0029] 3. By setting up a nozzle assembly, release agent is sprayed onto the upper surface of the intermediate mold during demolding and unloading, so that the injection molded parts can easily detach from the injection cavity of the intermediate mold during subsequent injection molding production, ensuring the smoothness of subsequent demolding processes. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0031] Figure 2 This is a schematic diagram illustrating the transverse movement structure in an embodiment of this application.

[0032] Figure 3 This is a front view of an embodiment of the present application used to illustrate the demolding device.

[0033] Figure 4 This is a schematic diagram illustrating the structure of the lifting mechanism in an embodiment of this application.

[0034] Figure 5 This is a partial cross-sectional view used in the embodiments of this application to illustrate the clamping mechanism.

[0035] Figure 6 This is a schematic diagram illustrating the structure of the auxiliary lifting mechanism in the embodiments of this application.

[0036] Figure 7 This is a schematic diagram illustrating the structure of the unloading device in an embodiment of this application.

[0037] Figure 8 yes Figure 7 A magnified view of part A in the middle.

[0038] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Base; 12. Injection molding top frame; 13. Cantilever frame; 131. Cantilever; 132. Connecting arm; 133. Drive mounting plate; 14. Mold opening mechanism; 141. Guide pillar; 142. Mold opening drive component; 2. Injection molding device; 21. Injection molding mechanism; 22. Molding mechanism; 221. Upper mold; 222. Middle mold; 223. Lower mold; 224. Insert strip; 225. Injection cavity; 3. 31. Demolding device; 31. Transverse mechanism; 311. Transverse cylinder; 312. Transverse connecting rod; 313. Reversing plate; 32. Lifting mechanism; 321. Lifting drive component; 322. Lifting cylinder; 323. Lifting connecting rod; 324. Lifting timing frame; 325. Lifting block; 326. Connecting block; 327. Lifting block; 328. Lifting slot; 33. Demolding mechanism; 331. Top plate; 332. Demolding pillar; 33 3. Demolding drive component; 334. Demolding guide rod; 34. Clamping mechanism; 341. Abutment block; 342. Spring; 343. Clamping drive component; 3431. Drive column; 3432. Thick section; 3433. Thin section; 3434. Drive wedge surface; 3435. Connecting shaft; 3436. First drive rod; 3437. Second drive rod; 344. Mounting slot; 35. Auxiliary lifting mechanism; 351. Auxiliary drive component; 3 52. Auxiliary lifting plate; 353. Auxiliary cylinder; 354. Auxiliary connecting rod; 355. Auxiliary synchronization frame; 36. Support base frame; 37. Support connecting rod; 4. Unloading device; 41. Unloading bracket; 42. Translation mechanism; 43. Lifting mechanism; 44. Clamping mechanism; 441. Clamping plate; 442. Gripper; 45. Cleaning plate; 451. Cleaning brush; 452. Cleaning cylinder; 46. Nozzle assembly; 461. Nozzle. Detailed implementation method

[0039] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0040] This application discloses an automatic demolding and unloading system for injection molding of rubber parts. (Refer to...) Figure 1 and Figure 2An automatic demolding and unloading system for rubber injection molding production includes a frame 1 and an injection molding device 2, a demolding device 3, and an unloading device 4 mounted on the frame 1. The injection molding device 2 includes an injection mechanism 21 and a molding mechanism 22, which are connected. The injection mechanism 21 injects material into the molding mechanism 22 for curing and molding. The molding mechanism 22 includes an upper mold 221, a middle mold 222, and a lower mold 223. The injection molding mechanism 21 is connected to the upper mold 221, and the middle mold 222 is located between the upper mold 221 and the lower mold 223, resting on the lower mold 223, which is slidably connected to the frame 1. The demolding device 3 is located on one side of the injection molding device 2 and is used to demold the injection molded part from the molding mechanism 22. The unloading device 4 removes the demolded injection molded part from the injection molding mechanism 21.

[0041] Reference Figure 1 and Figure 2 The frame 1 includes a base 11, an injection molding ejector 12, and a cantilever 13. The base 11 and the injection molding ejector 12 are fixed relative to each other. The cantilever 13 is located between the base 11 and the injection molding ejector 12. The lower mold 223 is placed on the cantilever 13 and is slidably connected to the cantilever 13. The injection molding device 2 is installed on the injection molding ejector 12, and the demolding device 3 is installed on the cantilever 13. A mold opening mechanism 14 is provided between the base 11 and the cantilever 13. The mold opening mechanism 14 is used to drive the cantilever 13 to move closer to or further away from the upper mold 221.

[0042] Reference Figure 1 and Figure 2 The cantilever frame 13 includes two horizontally arranged cantilever arms 131 that are parallel to each other and a connecting arm 132 that is vertically welded and fixed between the two cantilever arms 131. Two sets of mold opening mechanisms 14 are provided, with each mold opening mechanism 14 corresponding to one of the cantilever arms 131. The mold opening mechanism 14 includes several guide pillars 141 and mold opening drive components 142. In this embodiment, two guide pillars 141 are provided. The mold opening drive component 142 is a hydraulic cylinder, which is fixed to the machine base 11 by bolts. The two guide pillars 141 are vertically arranged between the machine base 11 and the injection molding top frame 12. One end of the guide pillar 141 is fixedly connected to the machine base 11, and the other end is fixedly connected to the injection molding top frame 12. The guide pillar 141 is vertically inserted into the cantilever arm 131, and the guide pillar 141 is slidably connected to the cantilever arm 131. The piston rod of the mold opening drive component 142 is connected to the corresponding cantilever arm 131, and is used to drive the cantilever frame 13 to slide vertically. After the material is injection molded in the molding mechanism 22, the mold opening mechanism 14 is activated. The mold opening drive component 142 drives the cantilever frame 13 to move away from the upper mold 221. The cantilever frame 13 drives the lower mold 223 and the middle mold 222 to move downward, and then separate from the upper mold 221, realizing the mold opening of the molding mechanism 22, so that the subsequent injection molded parts can be demolded and unloaded.

[0043] Reference Figure 1 and Figure 3 The demolding device 3 includes a lateral movement mechanism 31, a demolding mechanism 33, and a lifting mechanism 32. All three mechanisms are mounted on the cantilever frame 13. The output end of the lateral movement mechanism 31 is connected to the lower mold 223, and the lateral movement mechanism 31 is used to drive the lower mold 223 to move horizontally away from or towards the demolding mechanism 33. The lifting mechanism 32 is used to lift the middle mold 222 so that it separates from the lower mold 223; the demolding mechanism 33 is used to eject the injection molded part from the middle mold 222.

[0044] Reference Figure 1 and Figure 2 The transverse movement mechanism 31 includes a transverse movement cylinder 311, transverse movement connecting rods 312, and a reversing plate 313. The transverse movement cylinder 311 is mounted on the connecting arm 132, and the piston rod of the transverse movement cylinder 311 is oriented away from the demolding mechanism 33. The piston rod of the transverse movement cylinder 311 is connected to the reversing plate 313. There are two transverse movement connecting rods 312, which are vertically welded and fixed to the side of the reversing plate 313 near the transverse movement cylinder 311. The end of the transverse movement connecting rod 312 away from the reversing plate 313 is fixedly connected to the side wall of the lower mold 223. After the lower mold 223 separates from the upper mold 221, the transverse cylinder 311 drives the reversing plate 313 to move horizontally through the piston rod. Then, the reversing plate 313 drives the lower mold 223 to slide on the cantilever frame 13 through the transverse connecting rod 312. The setting of the reversing plate 313 has the effect of reversing the layout of the transverse cylinder 311, making the layout more reasonable and reducing the space occupied by the transverse mechanism 31.

[0045] Reference Figure 3 and Figure 4 The lifting mechanism 32 includes a lifting drive 321 and two lifting blocks 325. The lifting blocks 325 correspond to the cantilever 131. The two lifting blocks 325 are located on both sides of the driving direction of the transverse mechanism 31. Insert strips 224 are integrally formed on both sides of the middle mold 222 in the moving direction under the driving action of the transverse mechanism 31. The lifting block 325 includes a connecting block 326 and lifting blocks 327 welded to both ends of the connecting block 326. A lifting slot 328 for inserting the insert strips 224 is opened at the end of the lifting block 325 away from the connecting block 326. The lifting drive 321 is used to drive the lifting block 325 to move in the vertical direction.

[0046] When the lateral movement mechanism 31 drives the lower mold 223 to move toward the demolding mechanism 33, the middle mold 222 moves synchronously with the lower mold 223. The inserts 224 on both sides of the middle mold 222 are inserted into the lifting slots 328 of the corresponding lifting blocks 327. Then, the lifting drive component 321 drives the lifting block 325 to move upward, and then the lifting block 325 drives the middle mold 222 to move upward, so that the middle mold 222 and the injection molded part are separated from the lower mold 223. Then, the lateral movement mechanism 31 starts again to move the lower mold 223 to the starting position, so as to facilitate the subsequent demolding of the injection molded part on the middle mold 222.

[0047] Reference Figure 3 and Figure 4 A drive mounting plate 133 is welded and fixed to the cantilever frame 13. The drive mounting plate 133 is located between the two cantilever frames 131 and on one side of the injection molding device 2. The lifting drive component 321 includes a lifting cylinder 322, a lifting connecting rod 323, and a lifting synchronization frame 324. The lifting cylinder 322 is fixed to the middle of the bottom surface of the drive mounting plate 133 by bolts. The piston rod of the lifting cylinder 322 is arranged in a direction away from the drive mounting plate 133, and the end of the piston rod away from the drive mounting plate 133 is connected to the lifting synchronization frame 324. In this embodiment, eight lifting connecting rods 323 are provided. The lifting connecting rods 323 are symmetrically arranged at both ends of the length direction of the lifting synchronization frame 324, and each cantilever 131 corresponds to four lifting connecting rods 323. One end of the lifting connecting rod 323 is welded and fixed perpendicularly to the upper surface of the lifting synchronization frame 324, and the other end passes through the cantilever 131 and is fixedly connected to the lifting block 325.

[0048] The lifting cylinder 322 drives the lifting timing frame 324 to move vertically via the piston rod. The lifting timing frame 324 drives each lifting block 325 to move via the lifting connecting rod 323. Then, the lifting blocks 325 drive the middle mold 222 plate to move vertically via the lifting slot 328, thereby lifting the middle mold 222. The lifting timing frame 324 enables the lifting blocks 325 located on both sides of the middle mold 222 to move synchronously under the action of the lifting connecting rod 323, thereby improving the stability of the middle mold 222 during the lifting process.

[0049] Reference Figure 3 and Figure 5To ensure the stability of the lifting block 325 when the lifting cylinder 322 is in place, a clamping mechanism 34 is provided in the lifting block 327. The clamping mechanism 34 includes an abutment block 341, a spring 342, and a clamping drive component 343. An installation groove 344 is provided on the inner wall of the lifting slot 328 away from the middle mold 222. The abutment block 341 is slidably connected in the installation groove 344. A connecting groove is provided on the inner wall of the installation groove 344. The spring 342 is located in the connecting groove. One end of the spring 342 is fixedly connected to the abutment block 341, and the other end is fixedly connected to the inner wall of the connecting groove. The spring 342 is used to apply a pulling force to the abutment block 341 in a direction away from the middle mold 222, so that the abutment block 341 retracts into the installation groove 344. The abutment block 341 is an elastic block made of rubber. The clamping drive component 343 includes a drive column 3431, a first drive rod 3436, a second drive rod 3437, and a connecting shaft 3435. The first drive rod 3436 is located in the mounting groove 344 and is located on the side of the abutment block 341 away from the middle mold 222. One end of the connecting shaft 3435 is vertically fixedly connected to the first drive rod 3436, and the other end of the connecting shaft 3435 passes through the lifting block 327 and is vertically fixedly connected to the second drive rod 3437. The second drive rod 3437 is located outside the lifting block 327. The second drive rod 3437 and the first drive rod 3436 are folded together. The first drive rod 3436 and the second drive rod 3437 are rotatably connected to the abutment block 341 through the connecting shaft 3435. The drive column 3431 is vertically disposed on the side of the second drive rod 3437 away from the abutment block 341. The drive column 3431 includes a thin segment 3433 and a thick segment 3432. The thick segment 3432 is integrally formed on the top of the thin segment 3433. The width of the thick segment 3432 is greater than the width of the thin segment 3433. A drive wedge surface 3434 is formed at the transition part of the thick segment 3432 and the thin segment 3433 on the side near the second drive rod 3437.

[0050] As the lifting block 325 moves the middle mold 222 upward, the second drive rod 3437 moves from the thin section 3433 to the thick section 3432 of the drive column 3431 away from the end of the abutment block 341. The second drive rod 3437 rotates under the action of the drive wedge surface 3434. The second drive rod 3437 drives the first drive rod 3436 to rotate towards the abutment block 341 through the connecting shaft 3435. The first drive rod 3436 abuts against the abutment block 341. The abutment block 341 moves towards the middle mold 222 under the action of the first drive rod 3436. Then the abutment block 341 abuts against the insert strip 224, thereby clamping and fixing the middle mold 222 and ensuring the stability of the lifting process of the middle mold 222.

[0051] Reference Figure 1 and Figure 4The demolding mechanism 33 includes a top plate 331, a plurality of demolding pillars 332, and a demolding drive component 333. The top plate 331 is located between two cantilever arms 131. The plurality of demolding pillars 332 are welded and fixed to the upper surface of the top plate 331. The middle mold 222 forms a plurality of injection cavities 225, and the demolding pillars 332 correspond to the injection cavities 225. In this embodiment, there are two demolding drive components 333, and the demolding drive components 333 are cylinders. Both demolding drive components 333 are fixed to the bottom surface of the drive mounting plate 133 by bolts, and the two demolding drive components 333 are symmetrically arranged on both sides of the lifting cylinder 322. The piston rod of the demolding drive component 333 passes through the drive plate and is fixedly connected to the bottom surface of the top plate 331, thereby driving the top plate 331 to move in the vertical direction.

[0052] When the middle mold 222 moves to the top of the top plate 331, and the lower mold 223 returns to directly below the upper mold 221 under the driving action of the transverse mechanism 31, the demolding drive 333 drives the top plate 331 to move closer to the middle mold 222, so that the demolding pillar 332 will push the injection molded part out of the injection cavity 225 of the middle mold 222, realizing automatic demolding of the injection molded part with a high degree of automation. In order to ensure the stability of the demolding drive 333 when driving the top plate 331 to move, a number of demolding guide rods 334 are vertically welded and fixed on the side of the top plate 331 near the drive mounting plate 133. In this embodiment, there are four demolding guide rods 334, which are located at the four corners of the top plate 331. The end of the demolding guide rod 334 away from the top plate 331 passes through the drive mounting plate 133 and is slidably connected to the drive mounting plate 133; thus, the demolding guide rod 334 plays a good guiding role for the vertical movement of the top plate 331.

[0053] Reference Figure 4 and Figure 6An auxiliary lifting mechanism 3532 is also connected to the cantilever 13. This auxiliary lifting mechanism 3532 includes an auxiliary drive component 351 and auxiliary lifting plates 352. Two auxiliary lifting plates 352 are provided, corresponding to the cantilever 131. The auxiliary lifting plates 352 are located on both sides of the intermediate mold 222, and each auxiliary lifting plate 352 is positioned between the two lifting blocks 327 of the lifting block 325. The auxiliary drive component 351 includes an auxiliary cylinder 353, an auxiliary synchronization frame 355, and several auxiliary connecting rods 354. Two auxiliary cylinders 353 are provided, each corresponding to one of the auxiliary lifting plates 352. The auxiliary cylinders 353 are fixed to the bottom surface of the corresponding cantilever 131 by bolts. The piston rod of the auxiliary cylinder 353 passes through the cantilever 131 and is fixedly connected to the corresponding auxiliary lifting plate 352. The auxiliary synchronization frame 355 is horizontally positioned between the lifting synchronization frame 324 and the drive mounting plate 133. In this embodiment, eight auxiliary connecting rods 354 are provided, symmetrically arranged at both ends of the auxiliary synchronization frame 355 along its length. One end of each auxiliary connecting rod 354 is vertically fixed to the auxiliary synchronization frame 355, and the other end passes through the cantilever 131 and is fixedly connected to the corresponding auxiliary lifting plate 352. The auxiliary lifting mechanism 3532 enables the demolding device 3 to be used for demolding the molding mechanism 22 with a double-layer middle mold 222, thereby improving the applicability of the demolding device 3. With the cooperation of the auxiliary lifting mechanism 3532 and the lifting mechanism 32, the double-layer middle mold 222 is separated from the lower mold 223 in sequence. Afterwards, the injection molded part needs to be manually removed from the middle mold 222 located at the lower part.

[0054] Reference Figure 3 and Figure 4 A support base 36 is horizontally arranged at the bottom of the lifting synchronous frame 324. A support connecting rod 37 is arranged between the support base 36 and the drive mounting plate 133. There are two support connecting rods 37. The support connecting rod 37 is located on the side of the lifting drive component away from the lifting cylinder 322. One end of the support connecting rod 37 is vertically and fixedly connected to the bottom surface of the drive mounting plate 133. The other end of the support connecting rod 37 passes through the auxiliary synchronous frame 355 and the lifting synchronous frame 324 in sequence and is fixedly connected to the support base 36.

[0055] Reference Figure 1 and Figure 7An ejector bracket 41 is fixedly connected to the side of the injection molding ejector 12 near the demolding device 3. The ejector device 4 is mounted on the ejector bracket 41 and includes a lifting mechanism 43, a translation mechanism 42, and a clamping mechanism 44. The clamping mechanism 44 includes a clamping plate 441 and several grippers 442 mounted on the clamping plate 441. The grippers 442 are used to grip the injection molded parts. In this embodiment, the grippers 442 are parallel finger pneumatic grippers. The clamping plate 441 is connected to the translation mechanism 42 through the lifting mechanism 43. The lifting mechanism 43 and the translation mechanism 42 are driven by a conventional screw and nut transmission mechanism, which will not be described in detail in this embodiment. The output end of the lifting mechanism 43 is connected to the clamping plate 441 and is used to drive the clamping plate 441 to move vertically. The output end of the translation mechanism 42 is connected to the clamping plate 441 through the lifting mechanism 43 and is used to drive the clamping plate 441 to move horizontally in a direction parallel to the driving direction of the transverse translation mechanism 31.

[0056] After the demolding device 3 ejects the injection molded part from the middle mold 222, the unloading device 4 is activated. The lifting mechanism 43 drives the clamping mechanism 44 to move closer to the middle mold 222. After the gripper 442 grabs the injection molded part, the lifting mechanism 43 drives the gripper 442 to move upward, so that the injection molded part is completely separated from the middle mold 222. Then, the translation mechanism 42 is activated, driving the gripper 442 to move to one side to the receiving end. Then, the gripper 442 releases its gripping action on the injection molded part, thereby completing the unloading of the injection molded part.

[0057] Reference Figure 7 and Figure 8A cleaning plate 45 is connected to the side of the clamping plate 441 near the gripper 442. A cleaning cylinder 452 is bolted to the clamping plate 441. The piston rod of the cleaning cylinder 452 passes through the clamping plate 441 and is connected to the cleaning plate 45, which is used to drive the cleaning plate 45 to move vertically. A cleaning brush 451 is attached to the cleaning plate 45. The cleaning brush 451 is located on the side of the clamping plate 441 near the injection molding device 2 and extends in a direction perpendicular to the driving direction of the translation mechanism 42. After the unloading device 4 completes the unloading of the injection molded part, the clamping plate 441 moves towards the upper surface of the intermediate mold 222 under the action of the lifting mechanism 43 and the translation mechanism 42 until the cleaning brush 451 contacts the upper surface of the intermediate mold 222. Then, the translation mechanism 42 drives the clamping plate 441 to move, and then the cleaning brush 451 can sweep across the upper surface of the intermediate mold 222 to remove injection mold residues and other impurities from the surface of the intermediate mold 222, ensuring the product quality of subsequent continuous injection molding production. The clamping plate 441 is equipped with a nozzle assembly 46, which includes a nozzle 461 and a chemical tank. There are two nozzles 461, which are installed on the side of the cleaning plate 45 away from the clamping jaws 442. The nozzles 461 are connected to the chemical tank through pipes and are used to spray release agent onto the surface of the intermediate mold 222. After the injection molded part is unloaded, when the translation mechanism 42 drives the clamping plate 441 to sweep over the middle mold 222, the nozzle 461 sprays release agent onto the upper surface of the middle mold 222 to facilitate the demolding of the injection molded part during subsequent injection molding production.

[0058] The implementation principle of an automatic demolding and unloading system for rubber injection molding production according to an embodiment of this application is as follows: After the material is injection molded by the injection molding device 2, the mold opening mechanism 14 is activated, and the mold opening drive component 142 drives the cantilever frame 13 to move away from the upper mold 221. The cantilever frame 13 drives the lower mold 223 and the middle mold 222 to move downward, and then separates them from the upper mold 221. The lateral movement mechanism 31 drives the lower mold 223 and the middle mold 222 to move to the demolding mechanism 33; during this process, the insert 224 of the middle mold 222 is inserted into the lifting slot 328 of the lifting block 325. The lifting drive component 321 is activated, and the lifting drive component 321 drives the middle mold 222 to move upward, so that the middle mold 222 separates from the lower mold 223. Subsequently, the lateral movement mechanism 31 drives the lower mold 223 to the bottom of the upper mold 221, and the lifting mechanism 32 drives the middle mold 222 to descend to the initial position. The demolding drive component 333 drives the top plate 331 to move closer to the middle mold 222, so that the demolding column 332 pushes the injection molded part out of the injection cavity 225 of the middle mold 222, realizing the automatic demolding process of the injection molded part.

[0059] The unloading device 4 is activated, and the lifting mechanism 43 drives the clamping mechanism 44 to move closer to the intermediate mold 222. After the gripper 442 grabs the injection molded part, the lifting mechanism 43 drives the gripper 442 to move upward, so that the injection molded part is completely separated from the intermediate mold 222. Then, the translation mechanism 42 is activated, driving the gripper 442 to move to one side to the receiving end. Then, the gripper 442 releases its gripping action on the injection molded part, thereby completing the unloading of the injection molded part. After the unloading device 4 completes the unloading of the injection molded part, the clamping plate 441 moves closer to the upper surface of the intermediate mold 222 under the action of the lifting mechanism 43 and the translation mechanism 42 until the cleaning brush 451 comes into contact with the upper surface of the intermediate mold 222 plate. Then, the translation mechanism 42 drives the clamping plate 441 to move, so that the cleaning brush 451 can sweep across the upper surface of the intermediate mold 222, thereby removing injection molded residues and other debris from the surface of the intermediate mold 222. Afterwards, under the combined action of the lifting mechanism 43 and the translation mechanism 42, the clamping plate 441 sweeps over the middle mold 222 again, and the nozzle 461 sprays release agent onto the upper surface of the middle mold 222 to facilitate the demolding of the injection molded parts during subsequent injection molding production.

[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic demolding and unloading system for injection molding of rubber parts, characterized in that: The utility model relates to a injection molding machine, including frame (1), injection molding device (2) and stripping device (3), injection molding device (2) includes injection molding mechanism (21) and forming mechanism (22), forming mechanism (22) includes mutually adapted upper die (221), middle die (222) and lower die (223), upper die (221) is connected with injection molding mechanism (21), middle die (222) is placed on lower die (223), lower die (223) is slidably connected with frame (1);Stripping device (3) includes transverse moving mechanism (31), stripping mechanism (33) and lifting mechanism (32), stripping mechanism (33) is located on one side of injection molding device (2), stripping mechanism (33) includes top plate (331), sets up a plurality of stripping post (332) on top plate (331) and stripping drive part (333), the transverse moving mechanism (31) is used to drive lower die (223) to move to the direction of approaching or away from the top of top plate (331);The lifting mechanism (32) is used to lift middle die (222), makes middle die (222) with lower die (223) separate;A plurality of injection molding cavities (225) are formed on middle die (222), stripping post (332) corresponds with injection molding cavity (225), the output of stripping drive part (333) is connected with top plate (331), is used to drive top plate (331) to move to the direction of approaching or away from middle die (222), stripping post (332) is used to eject injection molding from injection molding cavity (225);The lifting mechanism (32) is connected with frame (1), and the lifting mechanism (32) includes lifting drive part (321) and lifting clamping block (325), lifting clamping block (325) is located in the both sides of middle die (222) moving direction, and the both sides of middle die (222) moving direction are fixedly connected with insertion strip (224), lifting clamping block (325) is set up lifting slot (328) of insertion strip (224) insertion on, the output of lifting drive part (321) is connected with lifting clamping block (325), and lifting drive part (321) is used to drive lifting clamping block (325) to move along the direction perpendicular to the board surface of middle die (222);The lifting drive part (321) includes lifting cylinder (322), lifting connecting rod (323) and lifting synchronous frame (324), lifting cylinder (322) is set up in the one side of drive mounting plate (133) away from top plate (331), the piston rod of lifting cylinder (322) is connected with lifting synchronous frame (324), one end of lifting connecting rod (323) is connected with lifting synchronous frame (324), and the other end of lifting connecting rod (323) is connected with lifting clamping block (325).The lifting block (327) is provided with a clamping mechanism (34), the clamping mechanism (34) includes an abutting block (341), a spring (342) and a clamping driving part (343), a mounting groove (344) is formed on the inner wall of the lifting slot (328) away from the middle die (222), the abutting block (341) is connected in the mounting groove (344) in a sliding manner, a connecting groove is formed on the inner wall of the mounting groove (344), the spring (342) is located in the connecting groove, one end of the spring (342) is fixedly connected with the abutting block (341), the other end is fixedly connected with the inner wall of the connecting groove, and the spring (342) is used for exerting a pulling force on the abutting block (341) in a direction away from the middle die (222), so that the abutting block (341) is retracted into the mounting groove (344), and the abutting block (341) is an elastic block made of rubber;The clamping driving part (343) includes a driving column (3431), a first driving rod (3436), a second driving rod (3437) and a connecting shaft (3435), the first driving rod (3436) is located in the mounting groove (344), and the first driving rod (3436) is located on the side of the abutting block (341) away from the middle die (222), one end of the connecting shaft (3435) is fixedly connected with the first driving rod (3436) perpendicularly, one end of the connecting shaft (3435) penetrates out of the lifting block (327) and is fixedly connected with the second driving rod (3437) perpendicularly, the second driving rod (3437) is located outside the lifting block (327), the second driving rod (3437) and the first driving rod (3436) are arranged in a fold, and the first driving rod (3436) and the second driving rod (3437) are rotatably connected with the abutting block (341) through the connecting shaft (3435);The driving column (3431) is vertically arranged on the side of the second driving rod (3437) away from the abutting block (341), the driving column (3431) includes a thin section (3433) and a thick section (3432), the thick section (3432) is integrally formed on the top of the thin section (3433), the width of the thick section (3432) is greater than that of the thin section (3433), and the transition part of the thick section (3432) and the thin section (3433) close to the second driving rod (3437) is formed with a driving wedge surface (3434).

2. The automatic demolding and stripping system for rubber part injection molding production according to claim 1, characterized in that: The rack (1) is connected with a driving mounting plate (133), the driving mounting plate (133) is located at the bottom of the top plate (331), the demolding driving part (333) is arranged on the driving mounting plate (133), one side of the top plate (331) close to the driving mounting plate (133) is connected with a plurality of demolding guide rods (334), one end of the demolding guide rod (334) away from the top plate (331) is arranged in the driving mounting plate (133), and the driving mounting plate (133) is connected with the driving mounting plate (133) in sliding connection.

3. The automatic demolding and stripping system for rubber part injection molding production according to claim 2, characterized in that: The rack (1) comprises a machine base (11), an injection molding top rack (12) and a cantilever rack (13), the machine base (11) and the injection molding top rack (12) are fixedly connected, the cantilever rack (13) is located between the machine base (11) and the injection molding top rack (12), the lower mold (223) is connected with the cantilever rack (13) in sliding connection, the demolding mechanism (33) and the transverse moving mechanism (31) are both mounted on the cantilever rack (13), the machine base (11) and the cantilever rack (13) are provided with a mold opening mechanism (14), the mold opening mechanism (14) is used for driving the cantilever rack (13) to move towards or away from the upper mold (221).

4. The automatic demolding and stripping system for rubber part injection production according to claim 3, characterized in that: The mold opening mechanism (14) comprises a mold opening driving part (142) and a plurality of guide columns (141), the guide column (141) is arranged between the injection molding top rack (12) and the machine base (11), the two ends of the guide column (141) are fixedly connected with the injection molding top rack (12) and the machine base (11) respectively, the guide column (141) is arranged in the cantilever rack (13), the cantilever rack (13) is connected with the guide column (141) in sliding connection, the output end of the mold opening driving part (142) is connected with the cantilever rack (13), and the mold opening driving part (142) is used for driving the cantilever rack (13) to slide along the guide column (141) in the axial direction.

5. The automatic demolding and stripping system for rubber part injection production according to claim 4, characterized in that: The transverse moving mechanism (31) comprises a transverse moving cylinder (311), a transverse moving connecting rod (312) and a reversing plate (313), the transverse moving cylinder (311) is arranged on the cantilever rack (13), the piston rod of the transverse moving cylinder (311) is connected with the reversing plate (313), the transverse moving connecting rod (312) is arranged at one end of the reversing plate (313) close to the transverse moving cylinder (311), and one end of the transverse moving connecting rod (312) away from the reversing plate (313) is connected with the lower mold (223).

6. The automatic demolding and stripping system for rubber part injection production according to claim 5, characterized in that: Further comprising a discharging device (4), the discharging device (4) comprising a lifting mechanism (43), a translation mechanism (42) and a clamping mechanism (44), the injection top frame (12) is fixed with a discharging support (41) on one side close to the demolding device (3), the discharging device (4) is installed on the discharging support (41), the clamping mechanism (44) comprises a clamping plate (441) and a plurality of clamping claws (442) arranged on the clamping plate (441), the clamping claws (442) are located on the top of the middle mold (222), the clamping claws (442) are used for grabbing the injection molded part, the output end of the lifting mechanism (43) is connected with the clamping plate (441) for driving the clamping plate (441) to move towards or away from the middle mold (222), the output end of the translation mechanism (42) is connected with the clamping plate (441) for driving the clamping plate (441) to move along the direction parallel to the plate surface of the middle mold (222).

7. The automatic demolding and stripping system for rubber part injection molding production according to claim 6, characterized in that: A cleaning brush (451) is arranged on the side of the clamping plate (441) close to the clamping claw (442), and the cleaning brush (451) is arranged along the direction perpendicular to the driving direction of the translation mechanism (42).

8. The automatic demolding and stripping system for rubber part injection production according to claim 7, characterized in that: A nozzle assembly (46) is arranged on the clamping plate (441), and the nozzle assembly (46) is used for spraying the demolding agent to the surface of the middle mold (222).

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