Forced bottle preform loading device of plastic bottle blowing machine

Abstract

The invention belongs to the field of bottle blowing machines, and particularly relates to a forced bottle preform loading device of a plastic bottle blowing machine, which comprises a preform pressing track, the inner side of the preform pressing track is slidably connected with a loading table, and a preform insertion rod is arranged above the loading table; the adjusting mechanism is used for adjusting the distance between the blank inserting rods; the adjusting mechanism comprises an adjusting block, a connecting rod, a servo motor and a Hall sensor. A servo motor is controlled to work, a lead screw can be driven to rotate, the lead screw is in threaded connection with a connecting groove in the middle of an adjusting block, the adjusting block can be driven to move up and down, and through combination of the connecting groove, a connecting rod and a connecting block, in the up-down moving process of the adjusting block, the connecting rod can drive all sets of blank inserting rods to move oppositely or reversely; through combination of the magnetic steel and the Hall sensor, the number of rotation turns of the lead screw can be detected and controlled, the vertical displacement of the adjusting block is further controlled, and therefore the distance between every two sets of blank inserting rods is automatically controlled.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing machines, in particular to a bottle embryo forced loading device for a plastic bottle blowing machine. Background Art

[0002] When using a plastic blow molding machine to produce plastic hollow containers, such as mineral water bottles, oil bottles, cosmetic bottles, etc., the plastic preform needs to be heated and softened before stretch blow molding. When the plastic preform enters the heater, the preform needs to be meshed with the large turntable through the small turntable, and the preform insertion head is inserted (loaded) into the inner diameter of the plastic preform, thereby bringing the plastic preform into the heater for heating. When the plastic preform is loaded in the prior art, the position where the preform insertion head fits with the inner diameter of the plastic preform is elastic, which can make the two fit firmly and complete the heating process.

[0003] According to the disclosed patent CN214395371U, a preform forced loading device for an ASB bottle blowing machine is disclosed, the device comprising a blank pressing cylinder, a pressure head group, a transmission rod and a heating rotating seat, the blank pressing cylinder and the pressure head group are connected by a transmission rod, the pressure head group is placed below the blank pressing cylinder and above the heating rotating seat, the pressure head group comprises a plurality of pressure heads, the heating rotating seat is a plurality of groups, each group is fixed with a plurality of blank insertion heads, when the heating rotating seat moves to the position directly below the pressure head group, each pressure head faces a blank insertion head.

[0004] In the process of realizing the invention, the inventor found that there are at least the following problems in the prior art that have not been solved: the above case uses the combination of the blank pressing cylinder, the transmission rod and the pressing head to force the loading of the bottle preform above the blank insertion head, but during use, the size of the blank insertion head is not convenient to adjust, and it is only suitable for loading bottle preforms of a single size, and the scope of use is limited. Moreover, the blank insertion head is inserted into the bottle preform by pressurization. Although loading can be achieved, it is easy to cause deformation of the bottle preform during use, and it is not convenient to separate the bottle preform from the blank insertion head after processing. For this reason, it is necessary to design a new technical solution to solve it. Summary of the invention

[0005] The object of the present invention is to provide a forced loading device for a preform of a plastic bottle blowing machine, so as to solve the technical problems that the preform is easily deformed during forced loading and it is inconvenient to collect the preform after processing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a forced loading device for preforms of a plastic bottle blowing machine, comprising a preform pressing track, the inner side of which is slidably connected to a loading platform, and a preform inserting rod is arranged above the loading platform; an adjusting mechanism: used for adjusting the distance between each preform inserting rod; the adjusting mechanism comprises an adjusting block, a connecting rod, a servo motor and a Hall sensor; a loading mechanism: used for forced loading of the preform, and the loading mechanism comprises a pressure head and a pressure sensor.

[0007] As a preferred embodiment of the present invention, connecting grooves are evenly provided on the outer side of the adjusting block, one end of the connecting rod is hinged to the connecting groove, a connecting block is fixedly installed in the middle of the embryo insertion rod close to the adjusting block, the end of the connecting rod away from the adjusting groove is hinged to the connecting block, a threaded groove is provided through the middle of the adjusting block, a screw rod is threadedly connected to the inner side of the threaded groove, the shaft end of the servo motor is fixedly connected to the bottom end of the screw rod, an installation groove is provided at the middle end inside the loading platform, the servo motor is fixedly connected to the bottom inner wall of the installation groove, the end of the screw rod placed on the inner side of the installation groove is fixedly connected to a magnetic steel, and the Hall sensor is fixedly connected above the inner wall on one side of the installation groove.

[0008] As a preferred embodiment of the present invention, the pressure head is placed above the loading platform, a bracket is fixedly connected above the pressing track, an electro-hydraulic push rod is fixedly connected to the middle of the upper surface of the bracket, the telescopic end of the electro-hydraulic push rod is fixedly connected to the middle of the upper surface of the fixed block, the pressure head is placed on the bottom side of the fixed block, a limiting groove is provided in the middle of the bottom side of the fixed block, the inner side of the limiting groove is slidably connected to a limiting protrusion, one end of the limiting protrusion is placed on the outside of the limiting groove and is fixedly connected to the middle of the upper surface of the pressure head, and the pressure sensor is fixedly connected to the top inner wall of the limiting groove.

[0009] As a preferred embodiment of the present invention, the upper surface of the loading platform is evenly provided with slide grooves, the bottom end of the embryo insertion rod is fixedly installed with a slider, and the slider at the bottom end of the embryo insertion rod is slidably connected to the slide groove on the surface of the loading platform.

[0010] As a preferred embodiment of the present invention, the regulating block is placed between each group of embryo insertion rods, the connecting grooves correspond to the embryo insertion rods one by one, and the sliding grooves correspond to the embryo insertion rods one by one.

[0011] As a preferred embodiment of the present invention, the magnetic steel is evenly distributed on the outside of the lead screw in a circular shape, and the Hall sensor corresponds to the magnetic steel.

[0012] As a preferred embodiment of the present invention, one end of the limiting protrusion placed on the inner side of the limiting groove is movably connected to the pressure sensor, a controller is fixedly connected to the upper surface of the bracket, the data output ends of the Hall sensor and the pressure sensor are connected to the data input end of the controller, and the signal output end of the controller is connected to the signal input end of the servo motor and the electro-hydraulic push rod.

[0013] As a preferred embodiment of the present invention, guide grooves are vertically penetrated through both sides of the pressure head, and the guide grooves are slidably connected to both sides of the bracket.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention controls the operation of a servo motor to drive the screw rod to rotate. The screw rod is threadedly connected to a connecting groove in the middle of an adjusting block. During the rotation of the screw rod, the adjusting block can be driven to move up and down. Through the combination of the connecting groove, the connecting rod and the connecting block, during the up and down movement of the adjusting block, each group of embryo insertion rods can be driven to move relative or reversely via the connecting rod, so that the adjustment can be made according to the bottle mouth size of the bottle preform. Through the combination of a magnetic steel and a Hall sensor, the number of rotations of the screw rod can be detected and controlled, and the up and down displacement of the adjusting block can be further controlled, so that the distance between each group of embryo insertion rods can be automatically controlled.

[0016] Controlling the operation of the electro-hydraulic push rod can push the fixed block downward, and the pressure head can be pushed upward through the limit convex block, and the preforms are loaded through the groups of embryo insertion rods on the upper surface of the loading platform. The pressure of the pressure head can be detected by the pressure sensor. When the bottle mouth of the preform is small and cannot be loaded, the pressure of the pressure head is greater than the threshold of the pressure sensor. The pressure sensor can transmit the data to the controller, and the controller can further automatically control the operation of the servo motor, thereby automatically adjusting the position of each group of embryo insertion rods, so as to realize the smooth loading of the preform. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 It is a schematic diagram of a preform inserting rod of a preform forced loading device of a plastic bottle blowing machine according to the present invention;

[0019] Figure 2 It is a schematic diagram of adjusting the embryo insertion rod of the forced loading device for the preform of a plastic bottle blowing machine according to the present invention;

[0020] Figure 3 The present invention is a front view of a forced loading device for preforms of a plastic bottle blowing machine.

[0021] In the figure: 1. embryo pressing track; 11. loading platform; 12. embryo inserting rod; 13. adjusting block; 14. connecting groove; 15. connecting rod; 16. connecting block; 17. slide groove; 18. slider; 2. threaded groove; 21. screw rod; 22. mounting groove; 23. servo motor; 24. magnet; 25. Hall sensor; 3. bracket; 31. pressure head; 32. electro-hydraulic push rod; 33. fixing block; 34. limit groove; 35. limit protrusion; 36. pressure sensor; 37. controller; 38. guide groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] Example 1: See Figure 1-Figure 3 A forced loading device for preforms of a plastic bottle blowing machine comprises a preform pressing track 1, a loading platform 11 is slidably connected to the inner side of the preform pressing track 1, and a preform inserting rod 12 is arranged above the loading platform 11; an adjusting mechanism: used to adjust the distance between each preform inserting rod 12; the adjusting mechanism comprises an adjusting block 13, a connecting rod 15, a servo motor 23 and a Hall sensor 25, the adjusting block 13 is placed between each group of preform inserting rods 12, and connecting grooves 14 are evenly opened on the outer side of the adjusting block 13, and the connecting grooves 14 correspond to the preform inserting rods 12 one by one, one end of the connecting rod 15 is hinged to the connecting groove 14, and the middle part of the preform inserting rod 12 close to the adjusting block 13 is fixedly installed with a A connecting block 16 is provided, and one end of the connecting rod 15 away from the adjusting groove is hinged to the connecting block 16. Slide grooves 17 are evenly provided on the upper surface of the loading platform 11. The slide grooves 17 correspond to the embryo insertion rods 12. A slider 18 is fixedly installed at the bottom end of the embryo insertion rod 12. The slider 18 at the bottom end of the embryo insertion rod 12 is slidably connected to the slide groove 17 on the surface of the loading platform 11. A threaded groove 2 is provided through the middle part of the adjusting block 13. A screw rod 21 is threadedly connected to the inner side of the threaded groove 2. The shaft end of the servo motor 23 is fixedly connected to the bottom end of the screw rod 21. A mounting groove 22 is provided at the middle end inside the loading platform 11. The servo motor 23 is fixedly connected to the inner wall of the bottom end of the mounting groove 22.

[0025] It should be noted that the servo motor 23 is controlled to work, which can drive the screw rod 21 to rotate. The screw rod 21 is threadedly connected to the connecting groove 14 in the middle of the adjusting block 13. During the rotation of the screw rod 21, the adjusting block 13 can be driven to move up and down. Through the combination of the connecting groove 14, the connecting rod 15 and the connecting block 16, during the up and down movement of the adjusting block 13, the connecting rod 15 can drive each group of embryo insertion rods 12 to move relative or reversely, so that it can be adjusted according to the bottle mouth size of the bottle preform.

[0026] Example 2: See Figure 1-Figure 3 The end of the screw rod 21 placed inside the mounting groove 22 is fixedly connected to a magnet 24 , and the Hall sensor 25 is fixedly connected to the upper inner wall of one side of the mounting groove 22 . The magnet 24 is circular and evenly distributed on the outer side of the screw rod 21 , and the Hall sensor 25 corresponds to the magnet 24 .

[0027] It should be noted that when the servo motor 23 drives the screw rod 21 to rotate, it can drive the magnet 24 to rotate in the mounting groove 22. When the magnet 24 rotates to the right side and aligns with the Hall sensor 25, the Hall sensor 25 can transmit data to the controller 37, thereby detecting and controlling the number of rotations of the screw rod 21, and further controlling the up and down displacement of the adjustment block 13, thereby automatically controlling the distance between each group of embryo insertion rods 12.

[0028] Example 3: See Figure 1-Figure 3 , Loading mechanism: used for forced loading of preforms, the loading mechanism includes a pressure head 31 and a pressure sensor 36, the pressure head 31 is placed above the loading platform 11, a bracket 3 is fixedly connected above the preform pressing track 1, an electro-hydraulic push rod 32 is fixedly connected to the middle of the upper surface of the bracket 3, the telescopic end of the electro-hydraulic push rod 32 is fixedly connected to the middle of the upper surface of the fixed block 33, and the pressure head 31 is placed on the bottom side of the fixed block 33.

[0029] It should be noted that when the embryo insertion rod 12 above the loading platform 11 moves to the position directly below the pressure head 31, the mouth of the preform is inverted above the embryo insertion rod 12, and the controller 37 controls the electro-hydraulic push rod 32 to work, so as to push the pressure head 31 downward, further push the bottom end of the preform, and insert each group of embryo insertion rods 12 into the preform for loading.

[0030] Example 4: See Figure 1-Figure 3 A limiting groove 34 is provided in the middle of the bottom side of the fixed block 33, and a limiting protrusion 35 is slidably connected to the inner side of the limiting groove 34. One end of the limiting protrusion 35 placed on the outer side of the limiting groove 34 is fixedly connected to the middle of the upper surface of the pressure head 31. The pressure sensor 36 is fixedly connected to the top inner wall of the limiting groove 34, and one end of the limiting protrusion 35 placed on the inner side of the limiting groove 34 is movably connected to the pressure sensor 36. A controller 37 is fixedly connected to the upper surface of the bracket 3. Guide grooves 38 are vertically penetrated on both sides of the pressure head 31. The guide grooves 38 are slidably connected to both sides of the bracket 3. The data output ends of the Hall sensor 25 and the pressure sensor 36 are connected to the data input end of the controller 37, and the signal output end of the controller 37 is connected to the signal input end of the servo motor 23 and the electro-hydraulic push rod 32.

[0031] It should be noted that the pressure sensor 36 on the inner wall of the top of the limiting groove 34 can detect the pressure of the pressure head 31 on the bottle preform. When the bottle mouth of the bottle preform is small and each group of embryo insertion rods 12 cannot be inserted into the bottle preform, the pressure of the pressure head 31 is greater than the threshold of the pressure sensor 36. The pressure sensor 36 can transmit data to the controller 37. Further, the controller 37 can automatically control the servo motor 23 to work, thereby automatically adjusting the retraction of each group of embryo insertion rods 12, so that each group of embryo insertion rods 12 can be smoothly inserted into the bottle preform for loading operation.

[0032] Working principle: The servo motor 23 is controlled to work, which can drive the screw rod 21 to rotate. The screw rod 21 is threadedly connected to the connecting groove 14 in the middle of the adjusting block 13. During the rotation of the screw rod 21, the adjusting block 13 can be driven to move up and down. Through the combination of the connecting groove 14, the connecting rod 15 and the connecting block 16, during the up and down movement of the adjusting block 13, the connecting rod 15 can drive each group of embryo insertion rods 12 to move relative or reversely, so that it can be adjusted according to the bottle mouth size of the bottle preform. During the rotation of the screw rod 21 driven by the servo motor 23, the magnet 24 can be driven to rotate in the installation groove 22. When the magnet 24 rotates to the right side and aligns with the Hall sensor 25, the Hall sensor 25 can transmit data to the controller 37, so as to detect and control the number of rotations of the screw rod 21, and further control the up and down displacement of the adjusting block 13, so as to automatically control each group of embryo insertion rods 12 The distance between them, when the embryo insertion rod 12 above the loading platform 11 moves to the right below the pressure head 31, the bottle mouth of the preform is turned upside down above the embryo insertion rod 12, and the controller 37 controls the electro-hydraulic push rod 32 to work, which can push the pressure head 31 to move downward, and further push the bottom end of the bottle preform, so that each group of embryo insertion rods 12 are inserted into the bottle preform for loading operation, and the pressure sensor 36 on the inner wall of the top of the limiting groove 34 can detect the pressure of the pressure head 31 on the bottle preform. When the bottle mouth of the bottle preform is small and each group of embryo insertion rods 12 cannot be inserted into the bottle preform, at this time, the pressure of the pressure head 31 is greater than the threshold value of the pressure sensor 36, and the pressure sensor 36 can transmit the data to the controller 37, and the controller 37 can further automatically control the servo motor 23 to work, so as to automatically adjust the retraction of each group of embryo insertion rods 12, so that each group of embryo insertion rods 12 can be smoothly inserted into the bottle preform for loading operation.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A forced loading device for preforms of a plastic bottle blowing machine, comprising a preform pressing track (1), characterized in that: The inner side of the embryo pressing track (1) is slidably connected to a loading platform (11), and a embryo inserting rod (12) is arranged above the loading platform (11); An adjustment mechanism: used for adjusting the distance between each embryo insertion rod (12); the adjustment mechanism comprises an adjustment block (13), a connecting rod (15), a servo motor (23) and a Hall sensor (25); Loading mechanism: used for forced loading of the preform, the loading mechanism comprising a pressure head (31) and a pressure sensor (36).

2. A forced loading device for preforms of plastic bottle blowing machines according to claim 1, characterized in that: The outer side of the adjustment block (13) is evenly provided with connection grooves (14), one end of the connection rod (15) is hinged to the connection groove (14), a connection block (16) is fixedly installed in the middle of the side of the embryo insertion rod (12) close to the adjustment block (13), and the end of the connection rod (15) away from the adjustment groove is hinged to the connection block (16), a thread groove (2) is penetrated through the middle of the adjustment block (13), the inner side of the thread groove (2) is threadedly connected with a screw rod (21), the shaft end of the servo motor (23) is fixedly connected to the bottom end of the screw rod (21), the middle end of the loading platform (11) is provided with a mounting groove (22), the servo motor (23) is fixedly connected to the inner wall of the bottom end of the mounting groove (22), one end of the screw rod (21) placed inside the mounting groove (22) is fixedly connected to a magnetic steel (24), and the Hall sensor (25) is fixedly connected to the upper inner wall of one side of the mounting groove (22).

3. The forced loading device for preforms of plastic bottle blowing machines according to claim 1, characterized in that: The pressure head (31) is placed above the loading platform (11); a bracket (3) is fixedly connected above the embryo pressing track (1); an electro-hydraulic push rod (32) is fixedly connected to the middle of the upper surface of the bracket (3); the telescopic end of the electro-hydraulic push rod (32) is fixedly connected to the middle of the upper surface of the fixed block (33); the pressure head (31) is placed on the bottom side of the fixed block (33); a limiting groove (34) is provided in the middle of the bottom side of the fixed block (33); a limiting protrusion (35) is slidably connected to the inner side of the limiting groove (34); one end of the limiting protrusion (35) is placed on the outer side of the limiting groove (34) and is fixedly connected to the middle of the upper surface of the pressure head (31); and the pressure sensor (36) is fixedly connected to the inner wall of the top end of the limiting groove (34).

4. The forced loading device for preforms of plastic bottle blowing machines according to claim 2, characterized in that: The upper surface of the loading platform (11) is evenly provided with sliding grooves (17), the bottom end of the embryo insertion rod (12) is fixedly mounted with a sliding block (18), and the sliding block (18) at the bottom end of the embryo insertion rod (12) is slidably connected to the sliding grooves (17) on the surface of the loading platform (11).

5. The forced loading device for preforms of plastic bottle blowing machines according to claim 4, characterized in that: The regulating block (13) is placed between each group of embryo insertion rods (12), the connecting grooves (14) correspond one-to-one to the embryo insertion rods (12), and the sliding grooves (17) correspond one-to-one to the embryo insertion rods (12).

6. The forced loading device for preforms of plastic bottle blowing machines according to claim 2, characterized in that: The magnetic steel (24) is evenly distributed on the outside of the lead screw (21) in a circular shape, and the Hall sensor (25) corresponds to the magnetic steel (24).

7. The forced loading device for preforms of plastic bottle blowing machines according to claim 3, characterized in that: One end of the limiting protrusion (35) disposed inside the limiting groove (34) is movably connected to a pressure sensor (36); a controller (37) is fixedly connected to the upper surface of the bracket (3); data output ends of the Hall sensor (25) and the pressure sensor (36) are connected to a data input end of the controller (37); and a signal output end of the controller (37) is connected to a signal input end of a servo motor (23) and an electro-hydraulic push rod (32).

8. The forced loading device for preforms of plastic bottle blowing machines according to claim 1, characterized in that: Guide grooves (38) are vertically penetrated on both sides of the pressure head (31), and the guide grooves (38) are slidably connected to both sides of the bracket (3).

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