Bottle clamping detection and bottle clamping prevention method for bottle blowing machine

Abstract

The invention discloses a bottle clamping detection and bottle clamping prevention method for a bottle blowing machine, and relates to the technical field of bottle blowing machines. The bottle blowing machine comprises a base plate, a bottle feeding star wheel, a transition star wheel and a bottle discharging star wheel are sequentially arranged on the base plate, and a bottle feeding inductive switch and a bottle discharging inductive switch are arranged on bottle feeding sections and bottle discharging sections of the bottle feeding star wheel, the transition star wheel and the bottle discharging star wheel respectively; the bottle feeding star wheel, the transition star wheel and the bottle discharging star wheel are each provided with an air cylinder bottle falling structure. According to the bottle blowing machine, the bottle feeding sensing switches and the bottle discharging sensing switches are arranged on the bottle feeding sections and the bottle discharging sections of the bottle feeding star wheel, the transition star wheel and the bottle discharging star wheel correspondingly, and whether bottles are clamped in the bottle blowing machine or not is judged by comparing the detection results of the bottle feeding sensing switches and the detection results of the bottle discharging sensing switches; meanwhile, the bottle feeding star wheel, the transition star wheel and the bottle discharging star wheel are each provided with an air cylinder bottle falling structure, and when the bottle clamping problem is detected, the air cylinder bottle falling structures are started to remove clamped bottle blanks.

Description

Technical Field

[0001] The invention belongs to the technical field of bottle blowing machines, and in particular relates to a bottle jam detection and bottle jam prevention method for bottle blowing machines. Background Art

[0002] Rotary blow molding machine is a kind of equipment that makes plastic particles into hollow containers through the blow molding process. The more common models include hollow extrusion blow molding machines that use PP and PE for one-time molding, injection stretch blow molding machines that use PET, PC or PP for two-time molding, and the newly developed multi-layer hollow extrusion blow molding and stretch blow molding. Most of the blow molding machines are still two-step blow molding machines, that is, the plastic raw materials must first be made into bottle blanks, and then blown.

[0003] Bottle preforms are prone to getting stuck when they are moving in the bottle blowing machine. When the staff finds that the bottle blowing machine is producing abnormally and stops the machine for inspection, they will find the bottle jam. If the staff fails to find the bottle jam in time, it will not only cause product loss, but may also damage the structure of the bottle blowing machine parts, causing economic losses and affecting production efficiency.

[0004] Furthermore, by installing sensors for detection, when discontinuous feeding occurs at the feeding end and empty spaces appear, the sensor fails to sense the product, which may cause a false alarm, thereby resulting in poor accuracy in bottle jam detection. Summary of the invention

[0005] The object of the present invention is to provide a method for detecting and preventing bottle jams in a bottle blowing machine, by respectively installing a bottle inlet sensing switch and a bottle outlet sensing switch on the bottle inlet section and the bottle outlet section of a bottle inlet star wheel, a transition star wheel and a bottle outlet star wheel, and by comparing the detection results of the bottle inlet sensing switch and the bottle outlet sensing switch, it is determined whether a bottle jam occurs in the bottle blowing machine, thereby solving the problem of poor accuracy of existing bottle jam detection.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention is a bottle jam detection and bottle jam prevention method for a bottle blowing machine, comprising: a bottle inlet sensing switch and a bottle outlet sensing switch are respectively installed at the bottle inlet star wheel, the transition star wheel and the bottle outlet star wheel; a cylinder bottle dropping structure is arranged at the bottle inlet star wheel, the transition star wheel and the bottle outlet star wheel;

[0008] The bottle jam detection and bottle jam prevention method comprises the following steps:

[0009] Step 1: The bottle blowing machine is started. During the conveying process of the preform, the bottle feeding sensor switch is used to detect whether there is a preform at the station where the preform has moved, and the detection result A is recorded;

[0010] Step 2: The bottle discharging sensor switch detects whether there is a preform at the moved station, and records the detection result B;

[0011] Step 3, compare the test result A with the corresponding test result B to determine whether the test results are consistent. If so, it is determined that there is no stuck bottle and no action is taken; if not, it is determined that a stuck bottle occurs, and the cylinder bottle drop structure is started to remove the stuck bottle embryo. After the bottle embryo is removed, the cylinder bottle drop structure is controlled to return to its original position.

[0012] Furthermore, the bottle inlet star wheel, transition star wheel and bottle outlet star wheel all include a star wheel body and a central shaft seat connected to one side of the star wheel body; the cylinder bottle dropping structure includes a convex sleeve arranged on a base plate located outside the central shaft seat, and a mounting plate is arranged on the outer peripheral side wall of the convex sleeve, and a plurality of cross arms are connected to the mounting plate, wherein the ends of a part of the cross arms are connected to a vertically arranged vertical rod A, and the ends of the vertical rod A are connected to a first guard plate located at the feeding section of the star wheel body; the ends of the other two cross arms are respectively connected to a vertical rod B and a vertical rod C, and a cylinder fixing seat is installed on the top of the vertical rod B, and a telescopic cylinder is hinged on the upper surface of the cylinder fixing seat, and a second guard plate is pivotally connected to the end of the telescopic cylinder, and one end of the second guard plate is rotatably mounted on the top of the vertical rod C; the first guard plate and the second guard plate cooperate to form a guard plate body located outside the star wheel body.

[0013] Furthermore, a bottle inlet sensor switch and a bottle outlet sensor switch are respectively installed on the upper surfaces of both ends of the first guard plate.

[0014] Furthermore, the bottle inlet sensing switch and the bottle outlet sensing switch are detected synchronously, and the pulse signals of the bottle inlet sensing switch sensing the tank body are recorded as a1, a2, ..., an in sequence; the pulse signals of the bottle outlet sensing switch sensing the tank body are recorded as b1, b2, ..., bm in sequence; wherein m=n+c, c is the number of workstations between the bottle inlet sensing switch and the bottle outlet sensing switch, that is, the detection result bm corresponds to the detection result an.

[0015] Furthermore, the second guard plate is located at the discharge section of the star wheel body; and the vertical rod B is located between the vertical rod A and the vertical rod C.

[0016] The present invention has the following beneficial effects:

[0017] The present invention installs bottle induction switches and bottle outduction switches on the bottle inlet section and bottle outlet section of the bottle inlet star wheel, the transition star wheel and the bottle outlet star wheel respectively, and judges whether a bottle is stuck in the bottle blowing machine by comparing the detection results of the bottle induction switches and the bottle outduction switches; at the same time, a cylinder bottle dropping structure is arranged at the bottle inlet star wheel, the transition star wheel and the bottle outlet star wheel, and when a bottle stuck problem is detected, the cylinder bottle dropping structure is started to remove the stuck bottle embryo; at the same time, the bottle stuck detection and bottle stuck prevention method provided by the present invention can be applied to rotary full-automatic high-speed bottle blowing machines in the food, mechanical packaging and blow molding industries.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 This is a schematic structural diagram of a preform conveying device for a bottle blowing machine according to the present invention;

[0021] Figure 2 This is a schematic diagram of the cylinder bottle dropping structure of the present invention;

[0022] Figure 3 Schematic diagram of the detection system of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0024] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] See also Figure 1As shown, the present invention is a bottle jam detection and bottle jam prevention method for a bottle blowing machine. The bottle blowing machine provided by the present invention comprises a substrate 10, and a bottle feeding star wheel 3, a transition star wheel 4 and a bottle discharging star wheel 5 are sequentially arranged on the substrate 10. When in use, the feeding section of the bottle feeding star wheel 3, the transition star wheel 4 and the bottle discharging star wheel 5 is prone to bottle preform jamming. Therefore, a bottle feeding induction switch 1 and a bottle discharging induction switch 2 are respectively installed at the bottle feeding section and the bottle discharging section of the bottle feeding star wheel 3, the transition star wheel 4 and the bottle discharging star wheel 5; a cylinder bottle dropping structure 6 is arranged at the bottle feeding star wheel 3, the transition star wheel 4 and the bottle discharging star wheel 5;

[0026] The bottle jam detection and bottle jam prevention method includes the following steps:

[0027] Step 1: The bottle blowing machine is started. During the conveying process of the preform, the bottle feeding sensor switch 1 is used to detect whether there is a preform at the station where the preform has moved, and the detection result A is recorded;

[0028] Step 2, the bottle discharging sensor switch 2 detects whether there is a preform at the moved station, and records the detection result B;

[0029] Step 3, compare the test result A with the corresponding test result B to determine whether the test results are consistent. If so, it is determined that there is no stuck bottle and no action is taken; if not, it is determined that a stuck bottle occurs, and the cylinder bottle drop structure 6 is started to remove the stuck bottle embryo. After the bottle embryo is removed, the cylinder bottle drop structure 6 is controlled to return to its original position.

[0030] like Figure 2 As shown, the bottle inlet star wheel 3, the transition star wheel 4 and the bottle outlet star wheel 5 all include a star wheel body 30 and a central shaft seat 31 connected to one side of the star wheel body 30; the cylinder bottle drop structure 6 includes a convex sleeve 32 arranged on the base plate 10 located outside the central shaft seat 31, and a mounting plate 33 is arranged on the outer peripheral side wall of the convex sleeve 32, and a plurality of cross arms 331 are connected to the mounting plate 33, wherein the end of a part of the cross arms 331 is connected to a vertically arranged vertical rod A34, and the end of the vertical rod A34 is connected to the star wheel body 30 is a first guard plate 341 of the feeding section; the ends of the other two horizontal arms 331 are respectively connected to the vertical rod B35 and the vertical rod C36, the top of the vertical rod B35 is installed with a cylinder fixing seat 37, the upper surface of the cylinder fixing seat 37 is hinged with a telescopic cylinder 38, the end of the telescopic cylinder 38 is pivotally connected to a second guard plate 39, one end of the second guard plate 39 is rotatably installed on the top of the vertical rod C36; the first guard plate 341 and the second guard plate 39 cooperate to form a guard plate body located outside the star wheel body 30.

[0031] Specifically, based on the above-mentioned method for realizing bottle jam detection and bottle jam prevention, it is necessary to respectively install a bottle inlet sensing switch 1 and a bottle outlet sensing switch 2 on the upper surfaces of both ends of the first guard plate 341; and the second guard plate 39 is located at the discharge section of the star wheel body 30; and the vertical rod B35 is located between the vertical rod A34 and the vertical rod C36.

[0032] Specifically, in actual use, the bottle inlet sensing switch 1 and the bottle outlet sensing switch 2 are detected synchronously, and the pulse signals of the bottle inlet sensing switch sensing the tank body are recorded as a1, a2, ..., an in sequence; the pulse signals of the bottle outlet sensing switch sensing the tank body are recorded as b1, b2, ..., bm in sequence; wherein m=n+c, c is the number of workstations between the bottle inlet sensing switch 1 and the bottle outlet sensing switch 2, that is, the detection result bm corresponds to the detection result an.

[0033] Based on the above, when controlling the rejection of the preform, the telescopic cylinder 38 is controlled to retract and drive the second guard plate 39 to move to the side away from the star wheel body 30. At this time, the distance between the second guard plate 39 and the star wheel body 30 is enlarged, so that the stuck preform falls into the recycling box, and then the telescopic cylinder 38 is controlled to extend to restore the initial state. At this time, the telescopic cylinder 38 drives the second guard plate 39 to return to the original position.

[0034] The bottle jam prevention method provided by the present invention is simple to operate, can effectively solve the bottle jam phenomenon, reduce the scrap rate of bottle embryos at the outlet of the bottle blowing machine, provide guarantee for subsequent production, reduce the operation time, and improve production efficiency.

[0035] like Figure 3 As shown, a schematic diagram of a detection system, the pulse signals of the bottle inlet sensor switch 1 and the bottle outlet sensor switch 2 are connected to the controller, and the controller compares and confirms whether the two pairs of pulse signals are consistent. If so, it runs normally. If not, the controller feeds back the signal to the console, and then sends a signal to the telescopic cylinder 38, and the telescopic cylinder 38 located behind the bottle outlet sensor switch 2 starts to shorten, driving the second guard plate 39 to open outward, and the stuck bottle embryo falls out of the conveyor line; after that, the telescopic cylinder 38 automatically extends, driving the second guard plate 39 to return to its original position, and the bottle embryo continues to be conveyed, solving the bottle jam problem in time. The entire device is connected by the controller, which can be fed back to the console, so that problems can be found in time and monitored at all times.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A method for detecting and preventing bottle jams in a bottle blowing machine, characterized in that: The bottle inlet section and bottle outlet section of the bottle inlet star wheel (3), the transition star wheel (4) and the bottle outlet star wheel (5) are respectively equipped with a bottle inlet induction switch (1) and a bottle outlet induction switch (2); The bottle inlet star wheel (3), the transition star wheel (4) and the bottle outlet star wheel (5) are all provided with a cylinder bottle dropping structure (6); The bottle jam detection and bottle jam prevention method comprises the following steps: Step 1: The bottle blowing machine is started. During the conveying process of the preform, the bottle feeding sensor switch (1) detects whether there is a preform at the station where the preform has moved, and records the detection result A; Step 2, the bottle discharging sensor switch (2) detects whether there is a preform at the moved workstation, and records the detection result B; Step 3, compare the test result A with the corresponding test result B to determine whether the test results are consistent. If so, it is determined that there is no stuck bottle and no action is taken; if not, it is determined that a stuck bottle occurs, and the cylinder bottle dropping structure (6) is activated to remove the stuck bottle embryo. After the bottle embryo is removed, the cylinder bottle dropping structure (6) is controlled to return to its original position.

2. A bottle jam detection and bottle jam prevention method for a bottle blowing machine according to claim 1, characterized in that: The bottle inlet star wheel (3), the transition star wheel (4) and the bottle outlet star wheel (5) each comprise a star wheel body (30) and a central shaft seat (31) connected to one side of the star wheel body (30); The cylinder bottle dropping structure (6) comprises a convex sleeve (32) arranged on a base plate (10) located outside a central shaft seat (31), a mounting plate (33) arranged on the outer peripheral side wall of the convex sleeve (32), a plurality of cross arms (331) connected to the mounting plate (33), wherein the ends of a part of the cross arms (331) are connected to a vertically arranged vertical rod A (34), and the ends of the vertical rod A (34) are connected to a first guard plate (341) located at the feeding section of the star wheel body (30); The ends of the other two horizontal arms (331) are respectively connected to a vertical rod B (35) and a vertical rod C (36); a cylinder fixing seat (37) is installed on the top of the vertical rod B (35); a telescopic cylinder (38) is hinged on the upper surface of the cylinder fixing seat (37); the end of the telescopic cylinder (38) is pivotally connected to a second guard plate (39); one end of the second guard plate (39) is rotatably installed on the top of the vertical rod C (36); the first guard plate (341) and the second guard plate (39) cooperate to form a guard plate body located outside the star wheel body (30).

3. A bottle jam detection and bottle jam prevention method for a bottle blowing machine according to claim 2, characterized in that: A bottle inlet sensing switch (1) and a bottle outlet sensing switch (2) are respectively mounted on the upper surfaces of the two ends of the first guard plate (341).

4. A bottle jam detection and bottle jam prevention method for a bottle blowing machine according to claim 3, characterized in that: The bottle inlet sensing switch (1) and the bottle outlet sensing switch (2) are detected synchronously, and the pulse signals of the bottle inlet sensing switch sensing the tank body are recorded in sequence as a1, a2, ..., an; the pulse signals of the bottle outlet sensing switch sensing the tank body are recorded in sequence as b1, b2, ..., bm; wherein m=n+c, c is the number of workstations between the bottle inlet sensing switch (1) and the bottle outlet sensing switch (2), that is, the detection result bm corresponds to the detection result an.

5. A bottle jam detection and bottle jam prevention method for a bottle blowing machine according to claim 2, characterized in that: The second guard plate (39) is located at the discharge section of the star wheel body (30); and the vertical rod B (35) is located between the vertical rod A (34) and the vertical rod C (36).

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