A plastic bottle production feeding machine

Abstract

The present invention provides a feeding machine for plastic bottle production, belonging to the technical field of feeding equipment. It includes: a vacuum pump truck, a vacuum hopper, a first connecting pipe, a second connecting pipe, a suction pipe, and a raw material bin. It also includes a bottom plate. A gantry is fixedly installed at the top of the bottom plate. The raw material bin is slidably installed at the top of the bottom plate and is located inside the gantry. A connecting frame is fixedly sleeved on the outer wall of the suction pipe. Two limit sliding rods are slidably installed at the top of the gantry. A rotating sleeve is rotatably installed at the top of the gantry. A long lead screw is penetrated and threadedly installed inside the rotating sleeve. The feeding machine for plastic bottle production provided by the present invention has the advantages that the suction pipe can automatically move for suction, saving labor, stable feeding and low time consumption, preventing the situation that the suction pipe is difficult to suck due to being inserted too deep into the raw material particles, reliable in use, and convenient for cleaning impurities adhered to the inside of the suction pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of feeding equipment, and particularly to a feeding machine for plastic bottle production. Background Art

[0002] Plastic bottles are one of the most common containers in life. During the production of plastic bottles, plastic particles need to be melted by an injection molding machine to form preforms first, and then the preforms are sent into a blow molding machine for blow molding and cooling and shaping. Currently, quite a number of injection molding machines for plastic bottle production use a vacuum feeding machine for feeding. The vacuum hopper of the vacuum feeding machine is installed on the hopper of the injection molding machine. When the vacuum feeding machine operates, plastic particle raw materials are sucked into the vacuum hopper. When the raw materials in the vacuum hopper reach the set amount, the valve at the bottom of the vacuum hopper opens, and the raw materials are sent into the hopper of the injection molding machine.

[0003] However, when the existing vacuum feeding machine for plastic bottle production is in use, it is necessary for workers to hold the suction pipe by hand to suck materials into the bin. During the suction process, the position of the suction pipe needs to be continuously moved, which is rather laborious. During the process of moving the suction pipe, the bottom end of the suction pipe sometimes moves above the materials, resulting in interrupted suction and a relatively long overall feeding time.

[0004] Therefore, it is necessary to provide a feeding machine for plastic bottle production to solve the above technical problems. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a feeding machine for plastic bottle production, in which the suction pipe can automatically move for suction, saving manpower, having stable feeding and low time consumption, being able to prevent the situation that the suction pipe is difficult to suck due to being inserted too deep into the raw material particles, being reliable in use, and being convenient for cleaning impurities adhered to the inside of the suction pipe.

[0006] To solve the above technical problems, the plastic bottle production feeding machine provided by the present invention includes: a vacuum pump truck, a vacuum hopper, a first connecting pipe, a second connecting pipe, a suction pipe, and a raw material bin. The raw material bin is arranged on one side of the vacuum pump truck. The suction pipe is located inside the raw material bin. One end of the first connecting pipe is fixedly connected to the air inlet of the vacuum pump truck, and the other end is connected to the air outlet of the vacuum hopper. An air inlet and feeding pipe is fixedly installed on the outer wall of the vacuum hopper. One end of the second connecting pipe is fixedly connected to the air inlet and feeding pipe, and the other end extends into the raw material bin and is fixedly connected to the top end of the suction pipe. A bottom plate is arranged below the second connecting pipe. A gantry is fixedly installed on the top of the bottom plate. The raw material bin is slidably installed on the top of the bottom plate and is located inside the gantry. A connecting frame is fixedly sleeved on the outer wall of the suction pipe. Two limit slide rods are slidably installed on the top of the gantry. A rotating sleeve is rotatably installed on the top of the gantry. A long lead screw is penetrated and threadedly installed inside the rotating sleeve. The bottom ends of the long lead screw and the two limit slide rods both extend into the raw material bin and are both fixedly connected to the connecting frame. A first motor is fixedly installed on the top of the gantry. Conical gears are fixedly sleeved on the output end of the first motor and the outer wall of the rotating sleeve respectively, and the two conical gears are meshed with each other;

[0007] Transverse slide rods are slidably installed on the outer walls on both sides of the gantry. One ends of the two transverse slide rods close to each other extend into the gantry and are both fixedly connected to the raw material bin. First springs are sleeved on the two transverse slide rods. One ends of the two first springs close to each other are fixedly connected to the raw material bin. The other ends of the two first springs away from each other are respectively fixedly connected to the inner walls on both sides of the gantry. A second motor is fixedly installed on the outer wall of one side of the gantry. A cam is fixedly sleeved on the output end of the second motor. A contact round wheel is rotatably installed on one end of the corresponding transverse slide rod close to the second motor. The outer ring of the contact round wheel is in contact with the outer ring of the cam.

[0008] Preferably, a plurality of bull's-eye ball bearings are fixedly installed on the top of the bottom plate. A sliding contact plate is fixedly installed on the bottom of the raw material bin. The bottom of the sliding contact plate is in contact with the ball body of the bull's-eye ball bearing.

[0009] Preferably, three guide slide rods are penetrated and slidably installed on the connecting frame. The bottom ends of the three guide slide rods are fixedly installed with the same hollow contact seat. Second springs are sleeved on the guide slide rods on both sides. The bottom ends of the two second springs are both fixedly connected to the hollow contact seat, and the top ends are both fixedly connected to the connecting frame. The top end of the guide slide rod in the middle is fixedly installed with a fixing plate. Insulating seats are fixedly installed on the bottom of the fixing plate and the top of the connecting frame respectively. Conductive blocks are fixedly installed on the two insulating seats. The two conductive blocks are in contact with each other.

[0010] Preferably, a lining tube is arranged inside the material suction pipe. A plurality of positioning blocks are fixedly installed on the inner wall of the material suction pipe. The top of the lining tube is in contact with the bottoms of the plurality of positioning blocks. A sealing sleeve is installed on the bottom of the material suction pipe by means of threads. The bottoms of the material suction pipe and the lining tube are both in contact with the inner bottom wall of the sealing sleeve.

[0011] Preferably, two accommodation openings are formed at the bottom of the material suction pipe. Two ear blocks are fixedly installed on the outer wall of the lining tube and near the bottom position. The two ear blocks are respectively located in the two accommodation openings. Rotating hand rods are rotatably installed on the two ear blocks.

[0012] Preferably, the lining tube comprises a left half lining and a right half lining. The two ear blocks are respectively fixedly installed on the left half lining and the right half lining.

[0013] Preferably, a plurality of anti-slip ridges are integrally formed on the outer wall of the sealing sleeve.

[0014] Preferably, four positioning slots are formed in the left half lining. Four positioning blocks are integrally formed on the right half lining. One ends of the four positioning blocks away from the right half lining all extend into the corresponding positioning slots.

[0015] Preferably, a fixed seat is fixedly installed on the gantry. A rotating shaft is rotatably installed on the fixed seat. A rotating arm is fixedly sleeved on the rotating shaft. A sealing cover is fixedly installed at the bottom of the rotating arm. A third motor is fixedly installed at the bottom of the fixed seat. The output end of the third motor is fixedly connected to the bottom end of the rotating shaft. A blanking opening is formed in the sealing cover. An air guiding cover is fixedly installed at the top of the sealing cover and near the blanking opening. A fixed pipe is fixedly installed on the air guiding cover. One end of the fixed pipe away from the air guiding cover is fixedly connected to a third connecting pipe. A branch pipe is fixedly installed at the bottom of the air inlet and feeding pipe. One end of the third connecting pipe away from the fixed pipe is fixedly connected to the bottom end of the branch pipe.

[0016] Preferably, a retaining net is fixedly installed at the cover opening position of the air guiding cover.

[0017] Compared with the related art, the plastic bottle production feeding machine provided by the present invention has the following beneficial effects:

[0018] The present invention provides a feeding machine for plastic bottle production. Through the settings of components such as a bottom plate, a gantry, a connecting frame, a limiting slide bar, a rotating sleeve, a long lead screw, a first motor, a transverse slide bar, a second motor, and a first spring, during use, after starting the first motor, it can drive the long lead screw to continuously move downward, enabling the suction pipe to be inserted into the central position of the raw material particles in the raw material bin for suction. When the second motor operates, it can drive the raw material bin to continuously move left and right, causing the raw material particles to flow towards the central position after being vibrated, avoiding the situation of interrupted suction by the suction pipe. Compared with the traditional method of manually holding the suction pipe for suction, it has the advantages of automatic suction, labor saving, stable feeding, and low time consumption; through the settings of components such as a guiding slide bar, a hollow contact seat, a second spring, a fixing plate, and a conductive block, when the suction pipe is inserted too deep, the hollow contact seat will contact the raw material particles and move upward relative to the connecting frame, and the two conductive blocks will separate, thus temporarily cutting off the power supply of the first motor to prevent the suction pipe from further probing downward, and can prevent the situation of difficult suction caused by the suction pipe being inserted too deep into the raw material particles, having the advantages of reliable use and stable suction speed

[0019] The present invention provides a feeding machine for plastic bottle production. Through the settings of components such as an inner lining pipe, a sleeve, ear blocks, and a rotating hand lever, it can prevent some plastic debris in the raw materials from directly adhering to the inner wall of the suction pipe. When it is necessary to clean the sundries adhering to the inner wall of the inner lining pipe, after unscrewing the sleeve, then turn the two rotating hand levers to the horizontal position, and then push down the two rotating hand levers to take out the inner lining pipe, avoiding directly disassembling the suction pipe, having the advantage of convenient operation, and the inner lining pipe can be split into two parts, having the advantage of convenient cleaning of impurities;

[0020] The present invention provides a feeding machine for plastic bottle production. Through the settings of components such as a third motor, a rotating arm, an air guide hood, and a third connecting pipe, when putting plastic raw material particles into the raw material bin, after starting the vacuum pump truck, it can extract the external air through the air guide hood and suck some powdery plastic raw materials into the vacuum hopper, which can avoid the powdery raw materials floating around during the feeding process, is beneficial to the maintenance of the production environment, and reduces the amount of powder inhaled by relevant personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the first embodiment of the feeding machine for plastic bottle production provided by the present invention;

[0022] Figure 2 is Figure 1 a schematic cross-sectional structure diagram of the raw material bin shown;

[0023] Figure 3 is Figure 2 an enlarged schematic diagram of part A shown;

[0024] Figure 4 The enlarged schematic diagram of part B shown in Figure 2 ;

[0025] Figure 5 The connection structure schematic diagram of components such as the guiding slide bar, connecting frame, fixing plate, and conductive block shown in Figure 2 ;

[0026] Figure 6 The structure schematic diagram of the suction pipe in the second embodiment of the plastic bottle production feeding machine provided by the present invention;

[0027] Figure 7 The structure schematic diagram of the suction pipe in the separated state from the envelope shown in Figure 6 ;

[0028] Figure 8 The enlarged schematic diagram of part C shown in Figure 7 ;

[0029] Figure 9 The structure schematic diagram of the inner lining pipe shown in Figure 6 ;

[0030] Figure 10 The exploded schematic diagram of the inner lining pipe shown in Figure 9 ;

[0031] Figure 11 The structure schematic diagram of the third embodiment of the plastic bottle production feeding machine provided by the present invention;

[0032] Figure 12 The enlarged schematic diagram of part D shown in Figure 11 ;

[0033] Figure 13 The connection structure schematic diagram of components such as the fixing seat, third motor, rotating arm, and cover shown in Figure 11 ;

[0034] Figure 14 The schematic diagram of the raw material bin in the covered state shown in Figure 11 ;

[0035] Reference numerals in the figure: 1, vacuum pump truck; 2, vacuum hopper; 3, first connecting pipe; 4, second connecting pipe; 5, suction pipe; 6, bottom plate; 7, gantry; 8, raw material bin; 9, connecting frame; 10, limit slide bar; 11, rotating sleeve; 12, long lead screw; 13, first motor; 14, bevel gear; 15, transverse slide bar; 16, second motor; 17, first spring; 18, contact round wheel; 19, cam; 20, guiding slide bar; 21, hollow contact seat; 22, second spring; 23, fixing plate; 24, conductive block; 25, inner lining pipe; 26, sleeve; 27, ear block; 28, rotating hand lever; 29, fixing seat; 30, third motor; 31, rotating arm; 32, cover; 33, air guide cover; 34, retaining net; 35, fixed pipe; 36, third connecting pipe; 501, receiving port; 251, left half lining; 252, right half lining; 3201, blanking port. Specific embodiments

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] First embodiment:

[0038] Please refer to Figures 1 - 5, in the first embodiment of the present invention, the plastic bottle production feeding machine includes: a vacuum pump truck 1, a vacuum hopper 2, a first connecting pipe 3, a second connecting pipe 4, a suction pipe 5 and a raw material bin 8. The raw material bin 8 is arranged on one side of the vacuum pump truck 1. The suction pipe 5 is located inside the raw material bin 8. One end of the first connecting pipe 3 is fixedly connected to the air inlet of the vacuum pump truck 1, and the other end is connected to the air outlet of the vacuum hopper 2. An air inlet and feeding pipe is fixedly installed on the outer wall of the vacuum hopper 2. One end of the second connecting pipe 4 is fixedly connected to the air inlet and feeding pipe, and the other end extends into the raw material bin 8 and is fixedly connected to the top end of the suction pipe 5. During use, the bottom of the vacuum hopper 2 is fixedly connected to the feeding port of the hopper of the injection molding machine. A bottom plate 6 is arranged below the second connecting pipe 4. A gantry 7 is fixedly installed on the top of the bottom plate 6. The raw material bin 8 is slidably installed on the top of the bottom plate 6 and is located inside the gantry 7. Installation holes are formed at the four corner positions of the bottom plate 6 for fixing the bottom plate 6. A connecting frame 9 is fixedly sleeved on the outer wall of the suction pipe 5. Two limit slide bars 10 are slidably installed on the top of the gantry 7. A rotating sleeve 11 is rotatably installed on the top of the gantry 7. A long lead screw 12 is penetrated and threadedly installed inside the rotating sleeve 11. The bottom ends of the long lead screw 12 and the two limit slide bars 10 both extend into the raw material bin 8 and are both fixedly connected to the connecting frame 9. The top ends of the two limit slide bars 10 and the long lead screw 12 are fixedly installed with the same connecting plate. A first motor 13 is fixedly installed on the top of the gantry 7. Tapered gears 14 are fixedly sleeved on the output end of the first motor 13 and the outer wall of the rotating sleeve 11 respectively, and the two tapered gears 14 are meshed with each other. The circumferential rotation of the long lead screw 12 is indirectly restricted by the two limit slide bars 10. When the first motor 13 drives the rotating sleeve 11 to rotate, the long lead screw 12 can be driven to move up or down;

[0039] During the material suction process, in order to gather the raw materials at the edge of the raw material bin 8 towards the center, transverse movement slide bars 15 are slidably installed on the outer walls of both sides of the gantry 7. One end of each of the two transverse movement slide bars 15 close to each other extends into the gantry 7 and is fixedly connected to the raw material bin 8. A reinforcing ring is fixedly sleeved on the outer wall of the raw material bin 8, and one end of each of the two transverse movement slide bars 15 close to each other is directly fixedly connected to the reinforcing ring. First springs 17 are sleeved on both of the two transverse movement slide bars 15. One end of each of the two first springs 17 close to each other is fixedly connected to the reinforcing ring on the raw material bin 8, and the other end of each of the two first springs 17 away from each other is fixedly connected to the inner walls of both sides of the gantry 7. A motor mounting plate is fixedly installed on the outer wall of one side of the gantry 7. A second motor 16 is fixedly installed on the motor mounting plate. A cam 19 is fixedly sleeved on the output end of the second motor 16. A contact round wheel 18 is rotatably installed on one end of the corresponding transverse movement slide bar 15 close to the second motor 16. The outer ring of the contact round wheel 18 is in contact with the outer ring of the cam 19. When the protruding part of the cam 19 turns towards the gantry 7, it will push the right transverse movement slide bar 15 to slide leftward through the contact round wheel 18, and the raw material bin 8 and the other transverse movement slide bar 15 also slide leftward. During this process, the left first spring 17 is compressed and the right first spring 17 is stretched. When the protruding part of the cam 19 turns away from the gantry 7, under the action of these two first springs 17, the raw material bin 8 moves rightward for a reset movement. When the cam 19 rotates continuously in a cycle, the raw material bin 8 can move left and right continuously. And due to the structure of the cam 19, the movement of the raw material bin 8 to the left and to the right is non-linear. Therefore, the raw materials in the raw material bin 8 are continuously vibrated. When a part of the raw materials at the center position of the raw material bin 8 is sucked away, the materials at the edge will move towards the center under the action of vibration, so that the top of the raw materials can be dynamically leveled.

[0040] In this embodiment, in order to reliably support the raw material bin 8 and at the same time reduce the resistance it receives during the movement process, a plurality of bull's-eye ball bearings are fixedly installed on the top of the bottom plate 6. A sliding contact plate is fixedly installed at the bottom of the raw material bin 8. The bottom of the sliding contact plate is in contact with the ball body of the bull's-eye ball bearing.

[0041] In this embodiment, considering that the raw material particles at lower positions are under greater pressure and are thus more difficult to be sucked into the suction pipe 5, in order to prevent the suction pipe 5 from being inserted too deep into the raw materials, three guiding slide rods 20 are penetrated and slidably installed on the connecting frame 9. The bottoms of the three guiding slide rods 20 are fixedly installed with the same hollow contact seat 21. The distance between the bottom of the hollow contact seat 21 and the bottom of the suction pipe 5 is maintained at 12 - 15 cm, and this distance is the maximum downward probing distance of the suction pipe 5. Second springs 22 are sleeved on the guiding slide rods 20 on both sides. The bottoms of the two second springs 22 are fixedly connected to the hollow contact seat 21, and the tops are fixedly connected to the connecting frame 9. The top of the guiding slide rod 20 in the middle is fixedly installed with a fixing plate 23. Insulating seats are fixedly installed on the bottom of the fixing plate 23 and the top of the connecting frame 9. Conductive blocks 24 are fixedly installed on the two insulating seats. The two conductive blocks 24 are in contact. A protective cover is also fixedly installed on the top of the connecting frame 9. The guiding slide rod 20 in the middle, the fixing plate 23, and the two conductive blocks 24 are all located inside the protective cover. Under the action of gravity and the elastic force of the two second springs 22, the two conductive blocks 24 remain in contact, forming a normally closed point. This normally closed point is connected in series to the energizing control circuit of the first motor 13 through a wire. When the bottom end of the suction pipe 5 is inserted into the raw materials to a certain depth, the hollow contact seat 21 will contact the top of the raw materials. If the suction pipe 5 further moves downward subsequently, due to the hollow contact seat 21 being in contact with the top of the raw materials, it will move upward relative to the suction pipe 5, which will cause the three guiding slide rods 20 to slide upward, and the two conductive blocks 24 will separate, thus opening the normally closed point and causing the first motor 13 to power off, thereby preventing the suction pipe 5 from being inserted too deep.

[0042] In this embodiment:

[0043] In the initial state, the suction pipe 5 is located above the raw material bin 8;

[0044] During use, first pour the plastic bottle raw material particles into the raw material bin 8. When feeding the hopper of the injection molding machine, after starting the vacuum pump truck 1 to run, under the action of the air pressure difference, external air will enter the suction pipe 5 at high speed (i.e., a vacuum suction force will be generated). Then start the first motor 13 and the second motor 16 to run. The first motor 13 drives the rotating sleeve 11 to rotate forward. Under the spiral push of the rotating sleeve 11, the long lead screw 12 gradually moves downward. The long lead screw 12 drives the suction pipe 5 to move downward through the connecting frame 9, so that the bottom end of the suction pipe 5 can be inserted into the raw material particles at the central position. Under the action of the suction force, the raw material particles will enter the suction pipe 5, and then enter the vacuum hopper 2 through the second connecting pipe 4. The filter element in the vacuum hopper 2 will intercept the raw material particles and raw material powder, which will stay in the vacuum hopper 2. The sucked air will subsequently enter the vacuum pump truck 1 through the first connecting pipe 3 and be finally discharged;

[0045] As the first motor 13 continues to move, the material suction pipe 5 will continuously suck materials downward. During the material suction process, the second motor 16 drives the cam 19 to rotate. Under the push of the cam 19 and the action of the two second springs 22, the raw material bin 8 will continuously move in a left - right circular motion. Since the movement speed is variable, the raw materials in the raw material bin 8 will be vibrated. When the raw materials at the central position are sucked away to form a depression, the raw materials at the edge will automatically flow towards the depression under the vibration, so that the material suction speed of the material suction pipe 5 is more stable and there will be no interruption in material suction;

[0046] During the downward movement of the material suction pipe 5, the hollow contact seat 21 also moves downward. When the material suction pipe 5 descends too deep, beyond the set maximum downward exploration distance, the hollow contact seat 21 will contact the raw materials. When the material suction pipe 5 moves further downward subsequently, the hollow contact seat 21 will move upward relative to the connecting frame 9, driving the three guiding slide rods 20 to slide upward. The middle guiding slide rod 20 will drive the upper conductive block 24 to move upward, causing the two conductive blocks 24 to separate. This will temporarily cut off the power supply of the first motor 13, so that the material suction pipe 5 will temporarily stop. After a part of the raw materials at this height position are sucked away, the height of the raw materials further decreases. Under the action of gravity and the elastic force of the two second springs 22, the hollow contact seat 21 will move downward, the two conductive blocks 24 will come into contact again, and the first motor 13 will run again, continuing to drive the material suction pipe 5 to move downward for material suction. Through this design, it can be avoided that the material suction pipe 5 has difficulty in sucking materials due to being inserted too deep into the raw materials.

[0047] Compared with the related technology, the plastic bottle production feeding machine provided by the present invention has the following beneficial effects:

[0048] Through the settings of components such as the bottom plate 6, gantry 7, connecting frame 9, limit slide rod 10, rotating sleeve 11, long lead screw 12, first motor 13, transverse slide rod 15, second motor 16, first spring 17, etc., during use, after starting the first motor 13 to run, it can drive the long lead screw 12 to continuously move downward, enabling the suction pipe 5 to be inserted into the central position of the raw material particles in the raw material bin 8 for suction. When the second motor 16 runs, it can drive the raw material bin 8 to continuously move left and right, causing the raw material particles to vibrate and flow towards the central position, avoiding the situation of intermittent suction of the suction pipe 5. Compared with the traditional method of manually holding the suction pipe 5 for suction, it has the advantages of automatic suction, labor saving, stable feeding, and low time consumption; through the settings of components such as the guiding slide rod 20, hollow contact seat 21, second spring 22, fixing plate 23, conductive block 24, etc., when the suction pipe 5 is inserted too deep, the hollow contact seat 21 will contact the raw material particles and move upward relative to the connecting frame 9, and the two conductive blocks 24 will separate, temporarily cutting off the power supply of the first motor 13 to avoid further downward probing of the suction pipe 5, preventing the situation that the suction pipe 5 has difficulty in suction due to being inserted too deep into the raw material particles, and having the advantages of reliable use and stable suction speed.

[0049] Second Embodiment:

[0050] Based on the plastic bottle production feeding machine provided in the first embodiment of the present application, the second embodiment of the present application proposes another plastic bottle production feeding machine. The second embodiment is merely a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0051] The following further describes the second embodiment of the present invention in conjunction with the drawings and embodiments.

[0052] Please refer to Figures 6 - 10 , in the plastic bottle production feeding machine proposed in this embodiment, a lining tube 25 is further provided inside the suction pipe 5. A plurality of positioning blocks are fixedly installed on the inner wall of the suction pipe 5. The top of the lining tube 25 is in contact with the bottom of the plurality of positioning blocks. A sealing sleeve 26 is threadedly installed at the bottom of the suction pipe 5. External threads are provided on the outer wall of the suction pipe 5 near the bottom position, and internal threads are provided on the inner wall of the sealing sleeve 26. The external threads are screwed with the internal threads. The bottom of the suction pipe 5 and the bottom of the lining tube 25 are both in contact with the bottom inner wall of the sealing sleeve 26. The sealing sleeve 26 is used to block the lining tube 25 to prevent it from slipping out. In order to facilitate the rotation of the sealing sleeve 26, a plurality of anti-slip ridges are integrally formed on the outer wall of the sealing sleeve 26. After unscrewing the sealing sleeve 26, the lining tube 25 can be taken out, and then the plastic powder adhered to the inner wall of the lining tube 25 can be cleaned to avoid blockage caused by excessive accumulation of plastic powder, thereby resulting in poor suction.

[0053] In the present embodiment, in order to facilitate the quick removal of the inner liner tube 25, two accommodating openings 501 are provided at the bottom of the suction tube 5, and two ear blocks 27 are fixedly installed on the outer wall of the inner liner tube 25 and near the bottom. The two ear blocks 27 are respectively located in the two accommodating openings 501, and rotating handles 28 are rotatably installed on the two ear blocks 27. After the cover 26 is unscrewed, if the inner liner tube 25 cannot slide out by itself under the action of gravity, the two rotating handles 28 are respectively buckled downward to rotate the two rotating handles 28 to a horizontal state. In this way, one end of the two rotating handles 28 will be located outside the accommodating opening 501, and then the two rotating handles 28 can be pushed downward to take out the inner liner tube 25.

[0054] In this embodiment, in order to further facilitate the user to clean the debris stuck on the inner lining tube 25, the inner lining tube 25 includes a left half lining 251 and a right half lining 252, and two ear blocks 27 are respectively fixedly installed on the left half lining 251 and the right half lining 252. After the inner lining tube 25 is split into two parts, it is more convenient to clean.

[0055] In this embodiment, in order to facilitate the user to assemble the left half lining 251 and the right half lining 252 together, four positioning slots are provided on the left half lining 251, and four positioning blocks are integrally formed on the right half lining 252. The ends of the four positioning blocks away from the right half lining 252 extend into the corresponding positioning slots.

[0056] In this embodiment:

[0057] By arranging the inner liner tube 25 in the suction tube 5, it is possible to prevent some plastic fragments in the raw material from directly adhering to the inner wall of the suction tube 5, and instead adhering to the inner wall of the inner liner tube 25 during the suction process. When cleaning the adhering debris, first unscrew the cover 26, then buckle the two rotating handles 28 downward respectively, rotate the two rotating handles 28 to a horizontal state, and then push the two rotating handles 28 downward to bring out the inner liner tube 25. After the inner liner tube 25 is brought out, break it apart, and then the inner walls of the left half liner 251 and the right half liner 252 can be cleaned of impurities.

[0058] The plastic bottle production feeder provided in the present embodiment can prevent some plastic fragments in the raw materials from directly adhering to the inner wall of the suction tube 5 by arranging components such as the inner liner tube 25, the sleeve 26, the ear block 27, and the rotating handle bar 28. When it is necessary to clean the debris adhering to the inner wall of the inner liner tube 25, the sleeve 26 is unscrewed, and then the two rotating handle bars 28 are buckled to a horizontal position, and then the two rotating handle bars 28 are pushed downward to bring out the inner liner tube 25, thereby avoiding direct disassembly of the suction tube 5 and having the advantage of convenient operation. In addition, the inner liner tube 25 can be broken into two parts, which has the advantage of convenient cleaning of impurities.

[0059] Third embodiment:

[0060] Based on the plastic bottle production feeding machine provided by the second embodiment of the present application, another plastic bottle production feeding machine is proposed in the third embodiment of the present application. The third embodiment is only a preferred mode of the second embodiment, and the implementation of the third embodiment will not affect the independent implementation of the second embodiment.

[0061] The following further describes the third embodiment of the present invention in conjunction with the accompanying drawings and embodiments.

[0062] Please refer to Figures 11 - 14 , in the plastic bottle production feeding machine proposed in this embodiment, a fixed seat 29 is further fixedly installed on the gantry 7. A rotating shaft is rotatably installed on the fixed seat 29. A rotating arm 31 is fixedly sleeved on the rotating shaft. A cover 32 is fixedly installed at the bottom of the rotating arm 31. A third motor 30 is fixedly installed at the bottom of the fixed seat 29. The output end of the third motor 30 is fixedly connected to the bottom end of the rotating shaft. A material dropping port 3201 is opened on the cover 32. After the cover 32 covers the raw material bin 8, plastic raw material particles are put into or poured into the raw material bin 8 through the material dropping port 3201. At the top of the cover 32 and near the position of the material dropping port 3201, an air guiding cover 33 is fixedly installed. A fixed pipe 35 is fixedly installed on the air guiding cover 33. One end of the fixed pipe 35 away from the air guiding cover 33 is fixedly connected to a third connecting pipe 36. A branch pipe is fixedly installed at the bottom of the air inlet and feeding pipe. One end of the third connecting pipe 36 away from the fixed pipe 35 is fixedly connected to the bottom end of the branch pipe. Solenoid valves are provided on both the branch pipe and the air inlet and feeding pipe. When feeding the raw material bin 8, the solenoid valve on the air inlet and feeding pipe is closed, and the solenoid valve on the branch pipe is opened. After the vacuum pump truck 1 is turned on, air will enter the air guiding cover 33. When feeding, some powders in the plastic raw materials will be lifted and then enter the air guiding cover 33 along with the air flow, and then enter the vacuum hopper 2 through the third connecting pipe 36. These powders will be intercepted by the filter element in the vacuum hopper 2, thus avoiding the powder floating around during the process of putting in the raw materials; when feeding the hopper of the injection molding machine, the solenoid valve on the branch pipe is closed, and the solenoid valve on the air inlet and feeding pipe is opened, so that air enters the vacuum hopper 2 through the second connecting pipe 4 to ensure normal material suction.

[0063] In this embodiment, in order to prevent plastic particles with normal particle size from being sucked into the air guiding cover 33, a retaining net 34 is fixedly installed at the cover opening position of the air guiding cover 33.

[0064] In this embodiment:

[0065] Except for putting or pouring plastic raw material particles into the raw material bin 8, the cover 32 is located at the rear side of the raw material bin 8 in other cases;

[0066] When putting or pouring plastic raw materials into the raw material bin 8, first start the third motor 30 to run, drive the rotating arm 31 to rotate counterclockwise, the rotating arm 31 drives the cover 32 to move, so that the cover 32 gradually moves to the top of the raw material bin 8. When the cover 32 abuts against the two limit blocks arranged on the raw material bin 8, at this time the axis line of the cover 32 coincides with the axis line of the raw material bin 8, and the third motor 30 stops running. Then, raw materials can be put into the raw material bin 8 through the material dropping port 3201. When feeding materials, the solenoid valve on the air inlet and feed pipe is closed, the solenoid valve on the branch pipe is opened, and the vacuum pump truck 1 is started. In this way, external air will rush into the air guiding cover 33 at high speed. Some powdery raw materials will enter the air guiding cover 33 during the process of falling towards the material dropping port 3201 (after the plastic raw material particles enter the raw material bin 8, the powder that is not sucked into the air guiding cover 33 will be lifted. Due to the shielding of the cover 32, the lifted powder can only overflow through the material dropping port 3201, and still will enter the air guiding cover 33 under the drive of the air flow). Then, it enters the vacuum hopper 2 through the third connecting pipe 36 and is intercepted by the filter element during the process of entering the first connecting pipe 3 from the vacuum hopper 2. In this way, it can well prevent the powdery raw materials from floating around;

[0067] The plastic bottle production feeding machine proposed in this embodiment, through the settings of components such as the third motor 30, the rotating arm 31, the air guiding cover 33, and the third connecting pipe 36, when putting plastic raw material particles into the raw material bin 8, after starting the vacuum pump truck 1 to run, the external air can be extracted through the air guiding cover 33, and some powdery plastic raw materials can be sucked into the vacuum hopper 2. In this way, it can avoid the powdery raw materials from floating around during the feeding process, which is beneficial to the maintenance of the production environment and reduces the amount of powder inhaled by relevant personnel.

[0068] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A plastic bottle production feeding machine, comprising a vacuum pump truck (1), a vacuum hopper (2), a first connecting pipe (3), a second connecting pipe (4), a suction pipe (5) and a raw material bin (8). The raw material bin (8) is arranged on one side of the vacuum pump truck (1), the suction pipe (5) is located inside the raw material bin (8), one end of the first connecting pipe (3) is fixedly connected to the air inlet of the vacuum pump truck (1), and the other end is connected to the air outlet of the vacuum hopper (2). An air inlet and feeding pipe is fixedly installed on the outer wall of the vacuum hopper (2). One end of the second connecting pipe (4) is fixedly connected to the air inlet and feeding pipe, and the other end extends into the raw material bin (8) and is fixedly connected to the top end of the suction pipe (5). It is characterized in that, It further includes a bottom plate (6). A gantry (7) is fixedly installed at the top of the bottom plate (6). The raw material bin (8) is slidably installed at the top of the bottom plate (6) and is located inside the gantry (7). A connecting frame (9) is fixedly sleeved on the outer wall of the suction pipe (5). Two limit slide rods (10) are slidably installed at the top of the gantry (7). A rotating sleeve (11) is rotatably installed at the top of the gantry (7). A long lead screw (12) is penetrated and threadedly installed in the rotating sleeve (11). The bottom ends of the long lead screw (12) and the two limit slide rods (10) both extend into the raw material bin (8) and are fixedly connected to the connecting frame (9). A first motor (13) is fixedly installed at the top of the gantry (7). Tapered gears (14) are fixedly sleeved on the output end of the first motor (13) and the outer wall of the rotating sleeve (11), and the two tapered gears (14) are meshed with each other; Transverse slide rods (15) are slidably installed on the outer walls on both sides of the gantry (7). The ends of the two transverse slide rods (15) close to each other extend into the gantry (7) and are both fixedly connected to the raw material bin (8). First springs (17) are sleeved on the two transverse slide rods (15). The ends of the two first springs (17) close to each other are fixedly connected to the raw material bin (8), and the ends of the two first springs (17) away from each other are fixedly connected to the inner walls on both sides of the gantry (7). A second motor (16) is fixedly installed on the outer wall of one side of the gantry (7). A cam (19) is fixedly sleeved on the output end of the second motor (16). A contact round wheel (18) is rotatably installed at the end of the corresponding transverse slide rod (15) close to the second motor (16). The outer ring of the contact round wheel (18) is in contact with the outer ring of the cam (19); Three guide slide rods (20) are penetrated and slidably installed on the connecting frame (9). The same hollow contact seat (21) is fixedly installed at the bottom ends of the three guide slide rods (20). Second springs (22) are sleeved on the guide slide rods (20) on both sides. The bottom ends of the two second springs (22) are fixedly connected to the hollow contact seat (21), and the top ends are fixedly connected to the connecting frame (9). A fixing plate (23) is fixedly installed at the top end of the guide slide rod (20) in the middle. Insulating seats are fixedly installed at the bottom of the fixing plate (23) and the top of the connecting frame (9). Conductive blocks (24) are fixedly installed on the two insulating seats, and the two conductive blocks (24) are in contact with each other.

2. The plastic bottle production feeding machine according to claim 1, wherein A plurality of bull's-eye balls are fixedly installed at the top of the bottom plate (6). A sliding contact plate is fixedly installed at the bottom of the raw material bin (8). The bottom of the sliding contact plate is in contact with the ball body of the bull's-eye ball.

3. The plastic bottle production feeding machine according to claim 1, wherein, A lining tube (25) is arranged inside the material suction pipe (5). A plurality of positioning blocks are fixedly installed on the inner wall of the material suction pipe (5). The top of the lining tube (25) is in contact with the bottoms of the plurality of positioning blocks. A sealing sleeve (26) is installed on the bottom of the material suction pipe (5) by means of threads. The bottoms of the material suction pipe (5) and the lining tube (25) are both in contact with the inner wall of the bottom of the sealing sleeve (26).

4. The plastic bottle production feeding machine according to claim 3, wherein Two accommodation openings (501) are formed in the bottom of the material suction pipe (5). Two ear blocks (27) are fixedly installed on the outer wall of the lining tube (25) and near the bottom position. The two ear blocks (27) are respectively located in the two accommodation openings (501). Rotating hand rods (28) are rotatably installed on the two ear blocks (27).

5. The plastic bottle production feeding machine according to claim 4, characterized in that, The lining tube (25) includes a left half lining (251) and a right half lining (252). The two ear blocks (27) are respectively fixedly installed on the left half lining (251) and the right half lining (252).

6. The plastic bottle production feeding machine according to claim 3, characterized in that, A plurality of anti-slip ridges are integrally formed on the outer wall of the sealing sleeve (26).

7. The plastic bottle production feeding machine according to claim 5, characterized in that, Four positioning slots are formed in the left half lining (251). Four positioning blocks are integrally formed on the right half lining (252). One ends of the four positioning blocks away from the right half lining (252) all extend into the corresponding positioning slots.

8. The plastic bottle production feeding machine according to any one of claims 1-7, characterized in that, A fixed seat (29) is fixedly installed on the gantry (7). A rotating shaft is rotatably installed on the fixed seat (29). A rotating arm (31) is fixedly sleeved on the rotating shaft. A sealing cover (32) is fixedly installed at the bottom of the rotating arm (31). A third motor (30) is fixedly installed at the bottom of the fixed seat (29). The output end of the third motor (30) is fixedly connected to the bottom end of the rotating shaft. A blanking opening (3201) is formed in the sealing cover (32). An air guiding cover (33) is fixedly installed at the top of the sealing cover (32) and near the blanking opening (3201). A fixed pipe (35) is fixedly installed on the air guiding cover (33). One end of the fixed pipe (35) away from the air guiding cover (33) is fixedly connected to a third connecting pipe (36). A branch pipe is fixedly installed at the bottom of the air inlet and feed pipe. One end of the third connecting pipe (36) away from the fixed pipe (35) is fixedly connected to the bottom end of the branch pipe.

9. The plastic bottle production feeding machine according to claim 8, characterized in that, A retaining net (34) is fixedly installed at the hood opening position of the air guiding cover (33).

Images