A large blow molding machine mold opening and closing device

Abstract

The application discloses a large-scale blow molding machine mold opening and closing device and relates to the technical field of blow molding machines.The mold opening and closing device comprises a base, a mold, sliding rails arranged on the top of the base, movable plates arranged on the two ends of the sliding rails, mounting racks fixedly arranged on the movable plates, guide rods arranged on the telescopic ends of cylinders, guide grooves arranged on guide cylinders and clamping grooves arranged on the guide rods.The two sides of the two mounting racks are provided with the mold.The side wall of the mold is provided with a cavity for blow molding.The two mounting racks are respectively provided with the cylinder and the guide cylinder.The guide rod is provided with the clamping groove matched with the fixing pin.The large-scale blow molding machine mold opening and closing device is simple to use and operate.The movement of the mold is guided by the guide rod matched with the guide groove, the mold is conveniently positioned and adjusted, the mold is not dislocated during the closing process, and the quality of products is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blow molding machine, in particular to a large blow molding machine opening and closing mold device. BACKGROUND

[0002] The blow molding machine is a kind of plastic processing machine, after liquid plastic is sprayed out, the wind force blown out by the machine is used to blow the plastic body to a certain shape of mold cavity, so as to make products, plastic is melted and quantitatively extruded in the screw extruder, then formed through the port membrane, then cooled by the air ring, then pulled by the traction machine at a certain speed, and wound by the winding machine to form a roll, the opening and closing of the mold affect the quality of the blow molding product.

[0003] The existing opening and closing mold device of large blow molding machine is more troublesome to operate, because the volume of the mold is large, the positioning of the mold during replacement and debugging is difficult, and the mold is prone to misalignment during closing, which affects the quality of the blow molding product and is not conducive to the normal use of the large blow molding machine. SUMMARY

[0004] The purpose of the present application is to provide a large blow molding machine opening and closing mold device to solve the problem of inconvenient use of the existing large blow molding machine opening and closing mold.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A large blow molding machine opening and closing mold device, comprising a base, further comprising:

[0007] A mold is arranged on the top of the base, the base is provided with sliding rails on the top, the sliding rails are both slidingly provided with movable plates on both ends, the movable plates are fixedly provided with mounting racks, the mounting racks are both provided with molds on one side close to each other, the side wall of the mold is provided with a cavity for blow molding, the mounting racks are both provided with air cylinders and guide cylinders, the air cylinders are provided with guide rods at the telescopic ends, the guide cylinders are provided with guide grooves matched with the guide rods, the guide cylinders are provided with fixing frames, the fixing frames are provided with sliding blocks, the sliding blocks are slidingly provided with fixing pins, and the guide rods are provided with clamping grooves matched with the fixing pins;

[0008] A baffle is arranged above the mold, the workbench is provided with a discharging cylinder at the center position, the discharging cylinder is connected with a screw extruder for heating plastic, the workbench is provided with two symmetrical rotating plates at the bottom, the rotating plates are both provided with baffles at one end close to each other, the mold is fixedly provided with a transmission plate at the top, the transmission plate is provided with a sliding block at the top end, and the sliding block is slidingly arranged on the rotating plate.

[0009] A limiting mechanism is arranged outside the mold.

[0010] Driving mechanism, set in the slide rail inside and with movable plate is connected, the plastic along the discharge cylinder falls between two molds, the driving mechanism realizes the closing of the mold through the way of driving two movable plate to approach, the guide rod guides the movement of the mold through the way of cooperating with the guide groove, the mold drives the rotating plate to turn up through the way of cooperating with the sliding block, the baffle closes the discharge cylinder through the way of turning up.

[0011] Based on the technical scheme, the application further provides the following optional technical schemes.

[0012] In an optional scheme, the limiting mechanism comprises a fixed rod, a movable block, a clamping block and a fixed groove, two of the mold outer parts are respectively provided with the fixed rod and the movable block, the movable block is internally and fixedly provided with the clamping block, and the fixed groove matched with the clamping block is formed in the fixed rod.

[0013] In an optional scheme, the mold outer part is provided with a fixed cylinder, a reset spring is arranged between the fixed cylinder and the movable block, a rotating block is arranged in the fixed cylinder, a magnet for attracting the movable block to move is arranged on the rotating block, and a connecting rope is arranged between the rotating block and the fixed pin.

[0014] In an optional scheme, the driving mechanism comprises a lead screw, a fixed plate and a motor, both of the lead screws are rotationally arranged in the slide rail, the movable plate is provided at the bottom with the fixed plate, the fixed plate is provided with a sleeve matched with the lead screw, the base is internally provided with the motor, the motor is provided with a transmission belt between the lead screw, and the transmission belt is arranged between the two lead screws.

[0015] In an optional scheme, the slide rail is provided at both sides with a hydraulic cylinder, the hydraulic cylinder is provided at the telescopic end with a driving rod, the four driving rods are provided with a workbench, and the workbench is provided at the bottom with a hinged seat.

[0016] In an optional scheme, one end of the rotating plate is rotationally connected with the hinged seat, the other end of the rotating plate is provided with a mounting groove, the side wall of the baffle is provided with a connecting block, and the connecting block is rotationally arranged in the mounting groove.

[0017] In an optional scheme, the mounting groove is internally provided with a spring, and one end of the spring is connected with the connecting block.

[0018] Compared with the prior art, the application has the following advantages:

[0019] The large blow molding machine opening and closing mold device is simple to use and operate, the driving mechanism drives two movable plates to move close to each other to realize the closing of the mold, the guide rod guides the movement of the mold through cooperation with the guide groove, the mold drives the rotating plate to turn upward through cooperation of the transmission plate and the sliding block, the baffle closes the discharge cylinder through upward turning, the guide rod and the guide cylinder guide the movement position of the mold, which is convenient for positioning and debugging the mold, the mold will not be misaligned during closing, ensuring the quality of the product and improving the convenience of using the large blow molding machine. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the large blow molding machine opening and closing mold device.

[0021] Figure 2 It is a structural schematic view of the slide rail in the large blow molding machine opening and closing mold device.

[0022] Figure 3 It is a sectional view of the slide rail in the large blow molding machine opening and closing mold device.

[0023] Figure 4 It is a sectional view of the guide cylinder in the large blow molding machine opening and closing mold device.

[0024] Figure 5 It is a front view of the large blow molding machine opening and closing mold device.

[0025] Figure 6 It is a structural schematic view of the rotating block in the large blow molding machine opening and closing mold device.

[0026] Figure 7 It is a structural schematic view of the inside of the base in the large blow molding machine opening and closing mold device.

[0027] Legend: 1-base, 2-slide rail, 201-limiting groove, 3-movable plate, 301-fixed groove, 4-screw rod, 5-fixed plate, 6-mounting frame, 7-mold, 701-cavity, 8-workbench, 9-transmission plate, 10-connection block, 11-discharge cylinder, 12-guide cylinder, 121-guide groove, 13-cylinder, 14-guide rod, 141-clamping groove, 15-rib plate, 16-fixed cylinder, 17-rotating block, 18-magnet, 19-moving block, 191-clamping block, 20-connection rope, 21-fixed frame, 211-sliding groove, 22-ladder, 23-hydraulic cylinder, 24-driving rod, 25-rotating plate, 251-mounting groove, 26-fixed pin, 27-sliding block, 28-baffle, 29-spring, 30-fixed rod, 31-return spring, 32-motor, 33-transmission belt, 34-transmission belt, 35-hinge seat, 36-sliding block, 37-connection spring. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0030] like Figures 1-7 As shown, a mold opening and closing device for a large blow molding machine according to an embodiment of the present invention includes a base 1, and further includes:

[0031] Mold 7, the top of the base 1 is fixedly provided with a slide rail 2, and movable plates 3 are slidably provided at both ends of the slide rail 2. The outer wall of the slide rail 2 is provided with a limiting groove 201, and the movable plates 3 are engaged with the limiting groove 201. The movable plates 3 are fixedly provided with mounting brackets 6, which are formed by splicing rectangular plates. Ribs 15 are provided between the rectangular plates. Mold 7 is provided on the side of the two mounting brackets 6 that are close to each other. The mounting brackets 6 are installed on the movable plates 3 by bolts, which facilitates the adjustment of the position of the mold 7. The side wall of the mold 7 is provided with a cavity 701 for blow molding. The center of the slide rail 2 is provided with a blowing device. The bottom opening of the molten plastic is connected to the blowing device. After the two molds 7 are closed, the blowing device immediately introduces compressed air into the cavity 701, inflating the molten plastic and sticking it tightly to the inner wall of the mold 7. After cooling, a hollow blow-molded product is obtained.

[0032] A cylinder 13 and a guide cylinder 12 are respectively fixedly mounted on the two mounting brackets 6. A guide rod 14 is provided at the telescopic end of the cylinder 13. A guide groove 121 is provided on the guide cylinder 12 to cooperate with the guide rod 14. The front end of the guide groove 121 is chamfered to facilitate the guide rod 14 entering the guide cylinder 12. A fixing bracket 21 is fixedly mounted on the guide cylinder 12. A sliding groove 211 is provided on the fixing bracket 211. A slider 36 is slidably mounted on the sliding groove 211. A fixing pin 26 is slidably mounted on the slider 36. A connecting spring 37 is provided between the fixing pin 26 and the slider 36. The slider 36 slides along the sliding groove 211 to facilitate... The position of the fixing pin 26 is adjusted, and then fixed with bolts. One end of the fixing pin 26 is inserted into the guide cylinder 12 and has an inclined groove. The guide rod 14 has a slot 141 that mates with the fixing pin 26. When adjusting the position of the mold 7, loosen the bolts at the bottom of the mounting bracket 6, bring the two molds 7 closer together, insert the guide rod 14 into the guide cylinder 12, and after the two molds 7 are fully fitted, tighten the nut on the mounting bracket 6 to achieve the positioning of the mold 7. When the mold 7 is in use, the fixing pin 26 is inserted into the slot 141 to fix the guide rod 14 and the guide cylinder 12, preventing the mold 7 from loosening or slipping during the blow molding process.

[0033] A baffle 28 is provided above the mold 7. A worktable 8 is provided above the mold 7. A discharge cylinder 11 is provided at the center of the worktable 8. The discharge cylinder 11 is connected to a screw extruder for heating plastic. Two symmetrical rotating plates 25 are provided at the bottom of the worktable 8. A baffle 28 is provided at the end of the two rotating plates 25 that are close to each other. A transmission plate 9 is fixedly provided at the top of the mold 7. A sliding block 27 is rotatably provided at the top of the transmission plate 9. The sliding block 27 is slidably provided on the rotating plate 25. When the molds 7 are close to each other, the transmission plate 9 drives the sliding block 27 to move. The sliding block 27 drives the rotating plate 25 to flip upward. When the two molds 7 are completely in contact, the sliding block 27 drives the two baffles 28 to flip upward to a horizontal position, closing the discharge cylinder 11 and stopping the descent of the molten plastic.

[0034] A limiting mechanism is provided on the outside of the mold 7;

[0035] The drive mechanism is located inside the slide rail 2 and connected to the movable plate 3. The heated and molten plastic falls along the discharge cylinder 11 between the two molds 7. The drive mechanism closes the molds 7 by moving the two movable plates 3 closer together. The guide rod 14 guides the movement of the molds 7 by cooperating with the guide groove 121. The molds 7 drive the rotating plate 25 to flip upward by cooperating with the transmission plate 9 and the sliding block 27. The baffle 28 closes the discharge cylinder 11 by flipping upward.

[0036] like Figure 6 As shown, in a preferred embodiment of the present invention, the limiting mechanism includes a fixed rod 30, a movable block 19, a locking block 191, and a fixed groove 301. The fixed rod 30 is fixedly disposed on the outside of the mold 7, and two movable blocks 19 are slidably disposed on the outside of the other mold 7. The locking block 191 is fixedly disposed inside the movable block 19, and the fixed rod 30 is provided with a fixed groove 301 that cooperates with the locking block 191.

[0037] like Figures 1-6As shown, in a preferred embodiment of the present invention, a fixed cylinder 16 is provided on the outside of the mold 7, and a return spring 31 is provided between the fixed cylinder 16 and the movable block 19. A rotating block 17 is provided inside the fixed cylinder 16, and four grooves are provided on the inner wall of the fixed cylinder 16. A square block that mates with the grooves is provided on the outside of the movable block 19. The movable block 19 can be removed from the fixed cylinder 16, rotated, and then put back into the fixed cylinder 16, where it is fixed by the grooves. A magnet 18 is provided on the rotating block 17 to attract the movable block 19 to move, and a connecting rope 20 is provided between the rotating block 17 and the fixing pin 26. When the rotating block 19 and the magnet 18 rotate to a horizontal position, the rotating block 19 pulls the fixing pin 26 downward through the connecting rope 20, causing the fixing pin 26 to... The top of the mold 19 cannot contact the guide rod 14, and the magnet 18 cannot attract the movable block 19. The movable block 19 is in its initial position under the action of the return spring 31. At this time, the locking block 191 is disengaged from the fixed rod 30, that is, the locking block 191 cannot lock the fixed rod 30. In use, the magnet 18 is rotated to the vertical position, and the magnet 18 attracts the two movable blocks 19 to approach each other. The fixed rod 30 passes into the interior of the movable block 19 and contacts the locking block 191. When the two molds 7 are in contact, the locking block 191 slides into the fixed groove 301, thus locking the fixed rod 30 and the mold 7. The rotating block 17 and the magnet 18 are rotated to the horizontal position. The rotating block 17 drives the two fixing pins 26 to approach each other through the connecting rope 20. The fixing pins 26 are disengaged from the guide rod 14, thus releasing the locking of the fixed rod 30 and the guide rod 14.

[0038] like Figures 2-7 As shown, in a preferred embodiment of the present invention, the driving mechanism includes a lead screw 4, a fixed plate 5, and a motor 32. Both lead screws 4 are rotatably disposed inside the slide rail 2. The bottom of the movable plate 3 is provided with a fixed plate 5. A sleeve that cooperates with the lead screw 4 is fixedly disposed on the fixed plate 5. A threaded groove is opened inside the sleeve. The motor 32 is disposed inside the base 1. A transmission belt 33 is disposed between the motor 32 and the lead screw 4. A transmission belt 34 is disposed between the two lead screws 4. The motor 32 drives the lead screw 4 to rotate through the transmission belt 33. The lead screw 4 drives the fixed plate 5 and the movable plate 3 to move along the slide rail 2.

[0039] like Figure 1 As shown, in a preferred embodiment of the present invention, hydraulic cylinders 23 are provided on both sides of the slide rail 2, and drive rods 24 are provided at the telescopic ends of the hydraulic cylinders 23. A worktable 8 is provided between the four drive rods 24. A hinge seat 35 is provided at the bottom of the worktable 8, and a ladder 22 is provided on the side wall of the worktable 8 to facilitate the loading of plastic.

[0040] like Figure 1As shown, in a preferred embodiment of the present invention, one end of the rotating plate 25 is rotatably connected to the hinge seat 35, and the other end of the rotating plate 25 is provided with an installation groove 251. A connecting block 10 is provided on the side wall of the baffle 28. The connecting block 10 is rotatably disposed inside the installation groove 251. A spring 29 is provided inside the installation groove 251. One end of the spring 29 is connected to the connecting block 10. The baffle 28 is in its initial position under the pull of the spring 29 to prevent the baffle 28 from affecting the normal feeding of plastic.

[0041] The above embodiments of the present invention provide a mold opening and closing device for a large blow molding machine. The raw material is put into the screw extruder and heated to melt. The molten plastic falls along the discharge cylinder 11. The drive mechanism drives the two molds 7 to move closer to each other. The fixed rod 30 passes into the interior of the movable block 19 and contacts the locking block 191. The guide rod 14 passes into the interior of the guide cylinder 12 and can guide the movement direction of the molds 7. When the two molds 7 are in contact, the locking block 191 slides into the interior of the fixed groove 301, and the fixed pin 26 passes into the interior of the locking groove 141 to lock the molds 7. The molds 7 drive the sliding block 27 to move through the transmission plate 9. The sliding block 27 drives the rotating plate 25 to flip upward. The baffle 28 closes the discharge cylinder 11. The bottom opening of the molten plastic is connected to the air blowing device. The air blowing device introduces compressed air into the cavity 701 to inflate the molten plastic and make it stick tightly to the inner wall of the mold 7. After cooling for a period of time, the rotating block 17 and the magnet 18 are rotated to a horizontal position, and the two molds 7 move away from each other. The blow-molded product can then be removed.

[0042] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A mold opening and closing device for a large blow molding machine, comprising a base, characterized in that, Also includes: The mold has a slide rail on the top of the base, movable plates slidably mounted at both ends of the slide rail, and mounting brackets fixedly mounted on the movable plates. A mold is mounted on one side of each of the two mounting brackets that are close to each other. The mold has a cavity for blow molding on its side wall. A cylinder and a guide cylinder are respectively mounted on each of the two mounting brackets. A guide rod is mounted on the telescopic end of the cylinder. A guide groove that mates with the guide rod is provided on the guide cylinder. A fixed bracket is mounted on the guide cylinder. A slider is mounted on the fixed bracket. A fixing pin is slidably mounted on the slider. A slot that mates with the fixing pin is provided on the guide rod. The mold has a baffle plate, a worktable is provided above the mold, a discharge cylinder is provided at the center of the worktable, the discharge cylinder is connected to a screw extruder for heating plastic, two symmetrical rotating plates are provided at the bottom of the worktable, and a baffle plate is provided at the end of the two rotating plates that are close to each other. A transmission plate is fixedly provided at the top of the mold, and a sliding block is provided at the top of the transmission plate. The sliding block is slidably mounted on the rotating plate. A limiting mechanism is provided on the outside of the mold; The drive mechanism is located inside the slide rail and connected to the movable plate. The heated and molten plastic falls along the discharge cylinder between the two molds. The drive mechanism closes the molds by bringing the two movable plates closer together. The guide rod guides the movement of the molds by cooperating with the guide groove. The molds rotate upward by cooperating with the transmission plate and the sliding block. The baffle closes the discharge cylinder by rotating upward. Its features are: The limiting mechanism includes a fixed rod, a movable block, a locking block, and a fixing groove. The two molds are respectively provided with a fixed rod and a movable block on their exteriors. A locking block is fixedly installed inside the movable block. The fixed rod has a fixing groove that cooperates with the locking block. The mold is provided with a fixed cylinder on the outside, and a return spring is provided between the fixed cylinder and the movable block. A rotating block is provided inside the fixed cylinder, and a magnet is provided on the rotating block to attract the movement of the movable block. A connecting rope is provided between the rotating block and the fixed pin.

2. The mold opening and closing device for a large blow molding machine according to claim 1, characterized in that, The driving mechanism includes lead screws, a fixed plate, and a motor. Both lead screws are rotatably mounted inside the slide rail. A fixed plate is provided at the bottom of the movable plate. A sleeve that cooperates with the lead screw is provided on the fixed plate. A motor is provided inside the base. A transmission belt is provided between the motor and the lead screw. A transmission belt is provided between the two lead screws.

3. The mold opening and closing device for a large blow molding machine according to claim 1, characterized in that, Hydraulic cylinders are provided on both sides of the slide rail, and drive rods are provided at the telescopic ends of the hydraulic cylinders. A worktable is provided between the four drive rods, and a hinge seat is provided at the bottom of the worktable.

4. The mold opening and closing device for a large blow molding machine according to claim 3, characterized in that, One end of the rotating plate is rotatably connected to the hinge seat, and the other end of the rotating plate is provided with an installation groove. A connecting block is provided on the side wall of the baffle, and the connecting block is rotatably disposed inside the installation groove.

5. The mold opening and closing device for a large blow molding machine according to claim 4, characterized in that, A spring is installed inside the mounting slot, and one end of the spring is connected to the connecting block.

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