A single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine

Abstract

The present invention belongs to the technical field of plastic bottle blowing, and specifically is a single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine, a frame, an extruder, a blow molding machine, and also includes a double-station molding mechanism, which is located on the frame and is used to receive the molten plastic extruded by the extruder, and under the action of the blow molding machine, the molten plastic is blown into shape in the double-station molding mechanism, a driving mechanism, which is arranged on the frame and is used to drive the double-station molding mechanism to move simultaneously, and a through hole, which is located on the frame and is convenient for collecting finished products. The double-station molding mechanism is driven to move by the driving mechanism, which reduces the time of station movement in the double-station molding mechanism and the burden of the control system, reduces the probability of errors, and improves the extrusion and blowing efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic bottle blowing, in particular to a single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine. Background Art

[0002] With the progress of economy and science and technology, people's living standards are improving day by day, and there is a further demand for the quality of goods. In many commodities, a blow molding method is used to blow the molten plastic raw materials through a mold. After the blow-molded plastic products are processed, good finished products are obtained. They are widely used in toys, auto parts, machinery and furniture manufacturing industries, and play an irreplaceable role.

[0003] In order to improve the processing efficiency of the plastic extrusion blow molding machine, in the prior art, a double-station plastic extrusion blow molding machine is required when processing injection molded parts of different shapes or sizes during blow molding. When the existing double-station plastic extrusion blow molding machine is working, usually when station No. 1 performs blow molding after receiving the material, station No. 2 starts to move to the extruder to receive the material. At this time, station No. 1 waits for station No. 2 to complete the blow molding in the extruder and move to the blow molding machine. Station No. 1 releases the molded part and continues to receive the material, thereby realizing the double-station plastic extrusion blow molding machine to efficiently process the injection molded parts. However, during this process, when station No. 1 is moving, station No. 2 is waiting. Station No. 1 and station No. 2 use two sets of drive mechanisms, and the two sets of drive mechanisms control the movement of the stations respectively, which increases the burden of the control system and reduces the processing efficiency of the plastic extrusion blow molding machine.

[0004] In view of this, in order to overcome the above technical problems, the present invention designs a single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is as follows: when the existing double-station plastic extrusion blow molding machine is working, usually when station No. 1 is performing blow molding after receiving the material, station No. 2 starts to move to receive the material. At this time, station No. 1 completes blow molding and waits for station No. 2 to complete receiving the material and move to the blow molding machine. Station No. 1 releases the molded part and continues to receive the material, thereby realizing the double-station plastic extrusion blow molding machine to efficiently process injection molded parts. However, during this process, when station No. 1 is moving, station No. 2 is in a waiting time. Station No. 1 and station No. 2 use two sets of drive mechanisms. The two sets of drive mechanisms are not only cumbersome in the manufacturing and maintenance process, but also increase the use cost, while also increasing energy consumption and reducing the environmental protection performance of production.

[0006] The present invention provides a single-station or double-station dual-purpose fully automatic plastic extrusion blow molding machine, comprising a frame;

[0007] Extruder;

[0008] Blow molding machines;

[0009] Also includes:

[0010] A double-station molding mechanism, which is located on the frame and is used to receive the molten plastic extruded by the extruder and, under the action of the blow molding machine, blow the molten plastic into shape in the double-station molding mechanism;

[0011] A driving mechanism, which is arranged on the frame and is used to drive the double-station double-station molding mechanisms to move simultaneously;

[0012] A through hole is provided on the frame to facilitate collection of finished products.

[0013] As a specific implementation of the present invention, the driving structure includes:

[0014] A base, the base being fixedly connected to the frame;

[0015] A rotating wheel, the rotating wheel is rotatably connected to the base;

[0016] A chain meshingly connected with the rotating wheel;

[0017] A top block, the top block is fixedly connected to the chain;

[0018] A fixed block, the fixed block is fixedly connected to the frame, and one end of the fixed block is provided with an inclined surface;

[0019] A slide groove, wherein the slide groove is arranged in the fixed block;

[0020] A slider, the slider being arranged in the slide groove;

[0021] The card block is fixedly connected to the slider, and the card block is L-shaped and elastic.

[0022] As a specific embodiment of the present invention, the double-station molding mechanism includes:

[0023] A support block, wherein the support block is fixedly connected to the frame;

[0024] A first plate body, wherein the first plate body is fixedly connected to the support block;

[0025] A long chute, wherein the long chute is arranged on the first plate;

[0026] A short chute, which is arranged on a side of the long chute close to the edge of the first plate;

[0027] Arc groove, the arc groove is symmetrically designed on the first plate, and the arc groove is used to connect the two ends of the long chute and the short chute. The arc groove is 1 cm lower than the longer chute at the end far away from each other in the long chute, and the arc groove is 1 cm higher than the longer chute at the end close to each other in the short chute. The long chute, the short chute and the arc groove form a one-way moving channel;

[0028] A material discharge hole, the material discharge hole being arranged in the first plate body;

[0029] A mold, wherein the mold is slidably connected to the plate body;

[0030] A No. 1 protrusion, which is welded on the mold and is slidably connected with the long slide groove, the short slide groove and the arc groove;

[0031] A No. 1 through hole, wherein the No. 1 through hole is located in the mold;

[0032] A No. 1 connecting rod, wherein the No. 1 connecting rod is slidably connected to the No. 1 through hole;

[0033] A No. 2 connecting rod, one end of which is slidably connected to the No. 1 connecting rod along the axial direction of the No. 1 connecting rod, and the other end of which is fixedly connected to the sliding block.

[0034] As a specific embodiment of the present invention, the mold further includes:

[0035] A second through hole, wherein the second through hole is located in the mold;

[0036] A No. 3 connecting rod, one end of which is connected to the interior of the mold, and the other end of which is fixedly connected to the No. 2 connecting rod.

[0037] As a specific implementation of the present invention, the straight slide groove, the short slide groove and the inner wall of the arc groove are all provided with a No. 1 roller.

[0038] As a specific implementation of the present invention, a ball groove is provided at the bottom of the No. 1 protrusion; a ball is provided in the ball groove.

[0039] As a specific implementation of the present invention, a No. 2 plate body is fixedly connected to the No. 1 connecting rod, and a spring is fixedly connected between the No. 2 plate body and the mold.

[0040] As a specific implementation of the present invention, a pin hole is provided on the No. 1 connecting rod.

[0041] As a specific embodiment of the present invention, the mold further includes:

[0042] A conical feed hole is located on the mold.

[0043] As a specific implementation of the present invention, a second roller is provided in the slide groove.

[0044] The beneficial effects of the present invention are as follows:

[0045] 1. The present invention provides a single-station dual-purpose fully automatic plastic extrusion blow molding machine, which drives the dual-station molding mechanism to move through a driving mechanism, thereby reducing the time for station movement in the dual-station molding mechanism and the burden on the control system, reducing the probability of errors, and improving the extrusion and blowing efficiency of the single-station dual-purpose fully automatic plastic extrusion blow molding machine. At the same time, the simplification of the driving structure facilitates the manufacture, installation and maintenance of the single-station dual-purpose fully automatic plastic extrusion blow molding machine, reduces the use cost, reduces the energy consumption of the single-station dual-purpose fully automatic plastic extrusion blow molding machine, and reduces pollution to the environment.

[0046] 2. The present invention provides a single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine, which converts the sliding friction of the mold during movement into rolling friction by arranging a No. 1 roller on the inner wall of the straight slide groove and the arc groove, thereby reducing the friction between the mold and the straight slide groove and the side wall of the arc groove, improving the moving speed of the double-station molding mechanism, and further improving the blow molding efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The present invention will be further described below in conjunction with the accompanying drawings.

[0048] Figure 1 It is the main figure of the present invention;

[0049] Figure 2 is a cross-sectional view of the driving structure in the present invention;

[0050] Figure 3 It is the main body diagram of the No. 1 plate in the present invention;

[0051] Figure 4 It is the main figure of the mold in the present invention;

[0052] Figure 5 is a cross-sectional view of the mold in the present invention;

[0053] Figure 6 yes Figure 2 The enlarged view of point A in the middle;

[0054] Figure 7 yes Figure 3 The enlarged view of point B in the middle;

[0055] Figure 8 yes Figure 5 Sectional view at CC;

[0056] In the figure: frame 1, through hole 11, extruder 2, blow molding machine 3, double-station molding mechanism 4, support block 41, No. 1 plate 42, long slide 43, short slide 431, arc groove 44, No. 1 roller 441, feed hole 45, mold 46, No. 2 through hole 461, No. 3 connecting rod 462, tapered feed hole 463, No. 1 protrusion 47, ball groove 471, ball 472, No. 1 through hole 48, No. 1 connecting rod 49, No. 2 connecting rod 491, No. 2 plate 492, spring 493, pin hole 494, drive mechanism 5, base 51, rotating wheel 52, chain 53, top block 54, fixed block 55, inclined surface 551, slide 56, No. 2 roller 561, slider 57, block 58. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods:

[0059] The present invention provides a single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine, comprising a frame 1;

[0060] Extruder 2;

[0061] Blow molding machine 3;

[0062] It is characterized by: also including:

[0063] A double-station molding mechanism 4, which is located on the frame 1 and is used to receive the molten plastic extruded by the extruder 2 and, under the action of the blow molding machine 3, blow the molten plastic into shape in the double-station molding mechanism 4;

[0064] A driving mechanism 5, which is disposed on the frame 1 and is used to drive the double-station molding mechanism 4 to move simultaneously;

[0065] A through hole 11 is provided on the frame 1 to facilitate collection of finished products.

[0066] When the plastic extrusion blow molding machine is working, the control switch is started, and the control power supply provides power to the driving mechanism 5, driving the double-station molding mechanism 4 to move, so that when the No. 1 station moves to the blow molding machine 3 after receiving the material from the extruder 2, the No. 2 station receives the material from the extruder 2 at the same time. When the No. 1 station completes the blow molding, the driving mechanism 5 drives the double-station molding mechanism 4 to continue to move, so that the No. 1 station receives the material while the No. 2 station is performing blow molding;

[0067] Two groups of driving devices are used in the prior art. One group of driving devices drives station No. 1 to perform blow molding after receiving the material, and station No. 2 starts to move to the extruder to receive the material. At this time, station No. 1 completes blow molding in the blow molding machine and waits for station No. 2 to complete receiving the material and move to the blow molding machine. Station No. 1 releases the molded part and starts to move to the extruder to receive the material. During the process of alternating material receiving and blow molding between station No. 1 and station No. 2, the time interval can be further shortened. Compared with the prior art, the driving mechanism 5 adopted in the present invention drives the double-station molding mechanism 4 to move during operation, reducing the time of station movement in the double-station molding mechanism and the burden of the control system, reducing the probability of errors, and improving the extrusion and blowing efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion and blow molding machine. At the same time, the simplification of the driving structure facilitates the manufacture, installation and maintenance of the single-station and double-station dual-purpose fully automatic plastic extrusion and blow molding machine, reduces the use cost, reduces the energy consumption of the single-station and double-station dual-purpose fully automatic plastic extrusion and blow molding machine, and reduces pollution to the environment.

[0068] As a specific implementation of the present invention, the driving structure 5 includes:

[0069] A base 51, wherein the base 51 is fixedly connected to the frame 1;

[0070] A rotating wheel 52, wherein the rotating wheel 52 is rotatably connected to the base 51;

[0071] A chain 53, wherein the chain 53 is meshedly connected with the rotating wheel 52;

[0072] A top block 54, wherein the top block 54 is fixedly connected to the chain 53;

[0073] A fixing block 55, wherein the fixing block 55 is fixedly connected to the frame 1, and an inclined surface 551 is provided at one end of the fixing block 55;

[0074] A slide groove 56, wherein the slide groove 56 is disposed in the fixing block 55;

[0075] A slider 57, wherein the slider 57 is disposed in the slide groove 56;

[0076] The clamping block 58 is fixedly connected to the sliding block 57 . The clamping block 58 is L-shaped and elastic.

[0077] When the switch is turned on, the controller on the frame 1 controls the power supply to provide power to the motor set in the base 51, and the motor drives the rotating wheel 52 to start rotating. The chain 53 and the top block 54 on the chain 53 rotate simultaneously under the meshing of the rotating wheel 52. When the top block 54 moves to one side of the block 58 with the chain 53, it pushes the block 58 to move along the slide groove 56. The slider 57 is fixedly connected with an elastic block 58 near the side of the chain 53. When the top block 54 drives the block 58 to move to the inclined surface 551, the block 58 itself has elasticity and deforms under the action of pressure. When the top block 54 completely passes over the block 58, the block 58 restores its own shape to facilitate moving again. When the top block 54 passes over the block 58, the slider 57 and the double-station molding mechanism 4 stop moving, and the top block 54 continues to move driven by the chain 53. When the top block 54 rotates to move in the horizontal direction again, it continues to push the slider 57 to move.

[0078] Compared with the prior art which uses multiple air cylinders or hydraulic cylinders to drive the movement and opening and closing of the mold 46, the driving structure 5 used in the present invention is simpler and easier to manufacture and maintain.

[0079] As a specific embodiment of the present invention, the double-station molding mechanism 4 includes:

[0080] A support block 41, wherein the support block 41 is fixedly connected to the frame 1;

[0081] A first plate body 42, wherein the first plate body 42 is fixedly connected to the support block 41;

[0082] A long slide groove 43, wherein the long slide groove 43 is provided on the first plate body 42;

[0083] A short slide groove 431, wherein the short slide groove 431 is disposed on one side of the long slide groove 43 close to the edge of the first plate body 42;

[0084] The arc groove 44 is symmetrically designed on the first plate 42. The arc groove 44 is used to connect the two ends of the long slide groove 43 and the short slide groove 431. The arc groove 44 is 1 cm lower than the longer slide groove 43 at one end away from the long slide groove 43, and the arc groove 44 is 1 cm higher than the longer slide groove 43 at one end close to the short slide groove 431. The long slide groove 43, the short slide groove 431 and the arc groove 44 form a one-way moving channel;

[0085] A material discharge hole 45, wherein the material discharge hole 45 is provided in the first plate body 42;

[0086] A mold 46, wherein the mold 46 is slidably connected to the plate body 42;

[0087] A first protrusion 47, which is welded to the mold 46 and is slidably connected to the long slide groove 43, the short slide groove 431 and the arc groove 44;

[0088] A first through hole 48, wherein the first through hole 48 is located in the mold 46;

[0089] A first connecting rod 49, wherein the first connecting rod 49 is slidably connected to the first through hole 48;

[0090] The second connecting rod 491 is slidably connected to the first connecting rod 49 along the axial direction of the first connecting rod 49 , and the other end of the second connecting rod 491 is fixedly connected to the slider 57 .

[0091] When the slider 57 moves forward and the mold 46 on the No. 1 station receives the material under the extruder 2, the No. 1 protrusion 47 is located in the long slide groove 43 of the No. 1 plate 42 above the support block 41, and the No. 2 station is performing blow molding. Then the slider 57 pushes the No. 2 connecting rod 491 to move axially. During the movement, the mold 46 of the No. 1 station on the No. 1 connecting rod 49 slidably connected to the No. 2 connecting rod 491 is pushed to move axially along the No. 2 connecting rod 491 in the long slide groove 43. The mold 46 is in a closed state when moving in the long slide groove 43, and falls into the arc groove 44 when it moves to the end of the long slide groove 43. The slider 57 stops moving, and the blow molding machine 3 on the No. 1 station starts working. At this time, the No. 2 station is in the extruder 2 When the slider 57 moves again, the blow molding machine 3 finishes working, and the mold 46 on the No. 1 station moves with the slider 57. Since the arc groove 44 here is 1 cm lower than the long slide groove 43, the No. 1 protrusion 47 slides along the arc groove 44 to the short slide groove 431, and the mold 46 separates and slides to both sides along the No. 1 connecting rod 49 in the No. 1 through hole 48. The mold 46 opens, and the blow-molded product falls from the discharge hole 45. When the mold 46 on the No. 1 station is located below the extruder 2 to receive the material again, the No. 1 protrusion 47 slides from the arc groove 44 to the long slide groove 43 along the short slide groove 431, and the mold 46 is closed from both sides along the No. 1 connecting rod 49 to the middle. After the material is received, it continues to move along the long slide groove 43 to the other end for blow molding;

[0092] When single-station operation is required, the first connecting rod 49 is slid out of the second connecting rod 491 to perform single-station extrusion blowing;

[0093] The present invention enables the molds 46 on the No. 1 and No. 2 stations to perform different tasks and move at the same time under the drive of the slider 57, thereby reducing the idle time of the molds 46, improving the blow molding efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine, and further increasing the production efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine.

[0094] As a specific embodiment of the present invention, the mold 46 further includes:

[0095] A second through hole 461, wherein the second through hole 461 is located in the mold 46;

[0096] The third connecting rod 462 has one end connected to the inside of the mold 46 and the other end fixedly connected to the second connecting rod 491 .

[0097] When the mold 46 is in the process of opening and closing, the molded injection molded part adheres to the mold 46 due to the imbalance of internal pressure and the bonding effect of part of the raw material. When the mold 46 is separated and demoulded and moves to both sides, the third connecting rod 462 extends to separate the molded injection molded part from the mold 46 and drop it off.

[0098] The present invention provides a third connecting rod 462, which reduces the impact of the injection molded part adhering to the mold 46 on subsequent plastic extrusion and blowing after the raw material is injection molded, and further improves the blow molding efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion and blow molding machine.

[0099] As a specific implementation of the present invention, the long slide groove 43 , the short slide groove 431 and the inner wall of the arc groove 44 are all rotatably connected to a No. 1 roller 441 .

[0100] By arranging a No. 1 roller 441 on the inner walls of the long slide groove 43 and the arc groove 44, the sliding friction of the No. 1 protrusion 47 fixed to the mold 46 during the movement along the long slide groove 43, the short slide groove 431 and the arc groove 44 is converted into rolling friction, thereby reducing the friction between the mold 46 and the side walls of the long slide groove 43 and the arc groove 44, thereby improving the moving speed of the double-station molding mechanism 4 and further improving the blow molding efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine.

[0101] As a specific implementation of the present invention, a ball groove 471 is provided at the bottom of the No. 1 protrusion 47 ; a ball 472 is provided in the ball groove 471 .

[0102] By arranging a ball groove 471 and a ball 472 in the No. 1 protrusion 47, the sliding friction of the mold 46 during movement is converted into rolling friction, thereby reducing the friction between the mold 46 and the bottom of the straight slide groove 43 and the arc groove 44, further improving the moving speed of the double-station molding mechanism 4, and further improving the blow molding efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine.

[0103] As a specific implementation of the present invention, a No. 2 plate body 492 is fixedly connected to the No. 1 connecting rod 49 , and a spring 493 is fixedly connected between the No. 2 plate body 492 and the mold 46 .

[0104] The No. 2 plate 492 fixed to the No. 1 connecting rod 49 cooperates with the spring 493 to reduce the gap between the molds 46 and make them fit together during the movement of the molds 46, thereby reducing the probability of deformation of the molten plastic during the blow molding process, improving the yield rate, and further improving the blow molding quality of the plastic extrusion blow molding machine.

[0105] As a specific implementation of the present invention, a pin hole 494 is provided on the No. 1 connecting rod 49 .

[0106] The pin in the pin hole 494 on the No. 1 connecting rod 49 fixes the position of the No. 1 connecting rod 49 and the No. 2 connecting rod 491, so that when the No. 1 connecting rod 49 moves with the No. 2 connecting rod 491, the No. 1 connecting rod 49 is prevented from sliding out of the No. 2 connecting rod 491 along the axial movement of the No. 1 through hole 48 during operation, thereby improving the stability of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine during operation.

[0107] As a specific embodiment of the present invention, the mold 46 further includes:

[0108] A conical feed hole 463 , wherein the conical feed hole 463 is located on the mold 46 .

[0109] After the extruder 2 extrude the molten plastic into the mold 46, the blow molding machine 3 enters the mold 46 from the tapered hole 463. The tapered hole 463 allows the corners of the molten plastic to fit with the tapered feed hole 463 under the action of gravity before the blow molding head in the blow molding machine 3 enters the mold 46, thereby reducing the impact of the edge material on the blow molding machine 2 during blow molding, and further improving the quality of blow molding by the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine.

[0110] As a specific implementation of the present invention, a second roller 561 is provided in the slide groove 56 .

[0111] When the slider 57 slides on the No. 2 roller 561 in the slide groove 56, the No. 2 roller 561 converts the sliding friction between the slider 57 and the slide groove 56 into the rolling friction of the No. 2 roller 561, thereby reducing the resistance of the slider 57 when moving in the slide groove 56, and further improving the moving speed of the double-station molding mechanism 4, thereby further improving the blow molding efficiency of the single-station and double-station dual-purpose fully automatic plastic extrusion blow molding machine.

[0112] The specific workflow is as follows:

[0113] When the switch is turned on, the controller on the frame 1 controls the power supply to provide power to the motor set in the base 51, and the motor drives the rotating wheel 52 to start rotating. The chain 53 and the top block 54 on the chain 53 rotate simultaneously under the meshing of the rotating wheel 52. When the top block 54 moves to the side of the block 58 with the chain 53, it pushes the slider 57 to move along the slide groove 56. The slider 57 is fixedly connected to the side of the chain 53 with an elastic block 58. When the top block 54 drives the block 58 to move to the inclined surface 551, the block 58 itself has elasticity and deforms under the action of pressure. When the top block 54 completely passes over the block 58, the block 58 restores its own shape to facilitate moving again. When the top block 54 passes over the block 58, the slider 57 and the double-station molding mechanism 4 stop moving, and the top block 54 stops moving. The block 54 continues to move under the drive of the chain 53. When the top block 54 rotates to move horizontally again, it continues to push the slider 57 to move. The slider 57 drives the No. 2 connecting rod 491 to move together. After the mold 46 on the No. 1 station receives the material under the extruder 2, the No. 1 protrusion 47 is located in the long slide groove 43 of the No. 1 plate 42 above the support block 41. At the same time, the No. 2 station is performing blow molding. The slider 57 pushes the No. 2 connecting rod 491 to move axially. During the movement, the mold 46 of the No. 1 station on the No. 1 connecting rod 49, which is slidably connected to the No. 2 connecting rod 491, is pushed to move axially along the No. 2 connecting rod 491 in the long slide groove 43. The mold 46 is in a closed state when moving in the long slide groove 43. The slider 57 is fixedly connected to the side of the chain 53 with an elastic When the top block 54 drives the block 58 to move to the inclined surface 551, the block 58 itself is elastic and deformed under the action of pressure. When the top block 54 completely passes over the block 58, the block 58 restores its own shape to facilitate moving again. When the top block 54 passes over the block 58, the slider 57 and the double-station molding mechanism 4 stop moving, and the top block 54 continues to move driven by the chain 53. When the top block 54 rotates to move horizontally again, it continues to push the slider 57 to move, and the blow molding machine 3 on the No. 1 station starts to work. At this time, the No. 2 station receives the material at the extruder 2. The top block 54 continues to move driven by the chain 53. When the top block 54 rotates to move horizontally again, it continues to push the slider 57 to move, and the mold 46 on the No. 1 station moves with the slider. Block 57 moves, at this time, the No. 1 protrusion 47 slides along the arc groove 44 to the short slide groove 431, and the mold 46 separates and slides to both sides along the No. 1 connecting rod 49 in the No. 1 through hole 48, the mold 46 opens, and the No. 3 connecting rod 462 extends out, the molded injection molded part is peeled off from the mold 46 and falls off, and the blow-molded product falls from the discharge hole 45. When the mold 46 on the No. 1 station is located below the extruder 2 again to receive the material, the No. 1 protrusion 47 slides from the arc groove 44 to the long slide groove 43 along the short slide groove 431, and the mold 46 is closed from both sides along the No. 1 connecting rod 49 to the middle. After the material is received, it continues to move along the long slide groove 43 to the other end for blow molding again. When single-station work is required, the No. 1 connecting rod 49 is slid out of the No. 2 connecting rod 491 for single-station extrusion and blowing.

[0114] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A single-station or double-station dual-purpose fully automatic plastic extrusion blow molding machine, comprising a frame (1); Extruder (2); Blow molding machine (3); Features: Also includes; A double-station molding mechanism (4), the double-station molding mechanism (4) being located on the frame (1) and used for receiving molten plastic extruded by the extruder (2), and blowing the molten plastic into shape in the double-station molding mechanism (4) under the action of the blow molding machine (3); A driving mechanism (5), the driving mechanism (5) being arranged on the frame (1) and used for driving the double-station molding mechanism (4) to move simultaneously; A through hole (11), wherein the through hole (11) is located on the frame (1) to facilitate collection of finished products; The driving mechanism (5) comprises: A base (51), wherein the base (51) is fixedly connected to the frame (1); A rotating wheel (52), wherein the rotating wheel (52) is rotatably connected to the base (51); A chain (53), wherein the chain (53) is meshingly connected with the rotating wheel (52); A top block (54), wherein the top block (54) is fixedly connected to the chain (53); A fixed block (55), the fixed block (55) being fixedly connected to the frame (1), and one end of the fixed block (55) being provided with an inclined surface (551); A slide groove (56), wherein the slide groove (56) is arranged in the fixed block (55); A slider (57), wherein the slider (57) is disposed in the slide groove (56); A clamping block (58), wherein the clamping block (58) is fixedly connected to the slider (57), and the clamping block (58) is L-shaped and elastic; The double-station molding mechanism (4) comprises: A support block (41), wherein the support block (41) is fixedly connected to the frame (1); A first plate body (42), wherein the first plate body (42) is fixedly connected to the support block (41); A long slide groove (43), wherein the long slide groove (43) is arranged on the first plate body (42); A short slide groove (431), wherein the short slide groove (431) is arranged on a side of the long slide groove (43) close to an edge of the first plate body (42); The arc groove (44) is symmetrically designed on the first plate (42), and the arc groove (44) is used to connect the two ends of the long slide groove (43) and the short slide groove (431). The arc groove (44) is 1 cm lower than the longer slide groove (43) at one end away from the long slide groove (43), and the arc groove (44) is 1 cm higher than the longer slide groove (43) at one end close to the short slide groove (431). The long slide groove (43), the short slide groove (431) and the arc groove (44) form a one-way moving channel; A material discharge hole (45), wherein the material discharge hole (45) is disposed in the first plate body (42); A mold (46), wherein the mold (46) is slidably connected to the first plate (42); A first protrusion (47), wherein the first protrusion (47) is welded to the mold (46) and is slidably connected to the long slide groove (43), the short slide groove (431) and the arc groove (44); A first through hole (48), wherein the first through hole (48) is located in the mold (46); A No. 1 connecting rod (49), wherein the No. 1 connecting rod (49) is slidably connected to the No. 1 through hole (48); A second connecting rod (491), one end of which is slidably connected to the first connecting rod (49) along the axial direction of the first connecting rod (49), and the other end of which is fixedly connected to the slider (57); The mold (46) also includes: A second through hole (461), wherein the second through hole (461) is located in the mold (46); A third connecting rod (462), one end of which is connected to the interior of the mold (46), and the other end of which is fixedly connected to the second connecting rod (491); The long slide groove (43), the short slide groove (431) and the inner wall of the arc groove (44) are all rotatably connected to a first roller (441); A ball groove (471) is provided at the bottom of the first protrusion (47); a ball (472) is provided in the ball groove (471); A No. 2 plate body (492) is fixedly connected to the No. 1 connecting rod (49), and a spring (493) is fixedly connected between the No. 2 plate body (492) and the mold (46); The first connecting rod (49) is provided with a pin hole (494); The mold (46) also includes: A conical feed hole (463), wherein the conical feed hole (463) is located on the mold (46); A second roller (561) is provided in the slide groove (56); When the slider (57) moves forward and the mold (46) on the No. 1 station receives the material below the extruder (2), the No. 1 protrusion (47) is located in the long slide groove (43) of the No. 1 plate (42) above the support block (41), and the No. 2 station is performing blow molding. Then the slider (57) pushes the No. 2 connecting rod (491) to move axially. During the movement, the mold (46) on the No. 1 station on the No. 1 connecting rod (49) slidably connected to the No. 2 connecting rod (491) is pushed to move axially along the No. 2 connecting rod (491) in the long slide groove (43). The mold (46) is in a closed state when moving in the long slide groove (43). When it moves to the end of the long slide groove (43), it falls into the arc groove (44). The slider (57) stops moving, and the blow molding machine (3) on the No. 1 station starts working. At this time, the No. 2 station receives the material at the extruder (2). When the slider (57) moves again, the blow molding machine (3) finishes working, and the mold (46) on the No. 1 station moves with the slider (57). Since the arc groove (44) here is 1 cm lower than the long slide groove (43), the No. 1 protrusion (47) slides along the arc groove (44) to the short slide groove (431). At the same time, the mold (46) separates and slides to both sides along the No. 1 connecting rod (49) in the No. 1 through hole (48). The mold (46) opens, and the blow-molded product falls from the discharge hole (45). When the mold (46) on the No. 1 station is located below the extruder (2) again to receive the material, the No. 1 protrusion (47) slides from the arc groove (44) to the long slide groove (43) along the short slide groove (431), and the mold (46) closes from both sides along the No. 1 connecting rod (49) to the middle. After the material is received, it continues to move to the other end along the long slide groove (43) for blow molding.

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