A bottle mouth orienting mechanism for a bottle blowing machine

Abstract

The utility model provides a kind of bottle mouth orientation mechanism of bottle blowing machine, including fixed frame, mounting plate, mounting plate, lifting cylinder, mounting plate front side is connected with guide rail vertically, the bottom of the cylinder rod of lifting cylinder is connected with lifting frame by connecting block, lifting frame back is connected on guide rail by sliding block and realizes up-down direction sliding, servo motor is connected on lifting frame vertically, the output shaft of servo motor connects speed reducer and torsion limiter after connection transmission shaft, transmission shaft bottom extends lifting frame bottom after being inserted by elastic connecting sleeve Bottle embryo, directional slot is vertically provided on bottle embryo, directional hook fixing support is connected in the bottom of the outer side surface of lifting frame, bottle embryo directional hook is hinged in the bottom of directional hook fixing support, inductive sheet, counterweight are connected on bottle embryo directional hook, strip-shaped clamping block is vertically provided in the bottom rear side of bottle embryo directional hook, support is connected on lifting frame, electromagnetic induction switch is connected on support.The utility model can be aligned uniformly according to the thread starting end direction of outside to bottle embryo.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, and in particular to a bottle mouth orientation mechanism for blow molding machines. Background Technology

[0002] After the preforms from the blow molding machine are heated, they need to be transported to the blow molding mold for blow molding. During this process, a preform clamping mechanism is needed for transfer. The role of the preform clamping mechanism is to hold the heated preforms and send them into the blow molding mold. Currently, most preforms are in the shape of revolution, and the bottle mouth at the top of the preform is provided with external threads. The bottle after blow molding is also a revolution, and the bottle cap connected to it later is also a revolution. Therefore, the above operations are all fine.

[0003] However, some bottles have non-rotational shapes for both the bottle body and the cap, requiring alignment between the cap and the bottle body when tightened. For example, an oval bottle body and an oval cap require the long side of the cap to align with the long side of the bottle body. This necessitates uniformly orienting the bottle preform at the neck, ensuring that the starting ends of the threads at the neck all face the same direction. This guarantees that the caps will all be aligned uniformly after the blow molding process. Utility Model Content

[0004] To address the aforementioned problems, this utility model aims to provide a bottle mouth orientation mechanism for a blow molding machine. Its novel structure enables uniform alignment of the preform according to the direction of the outer thread start end.

[0005] The technical solution of this utility model is a bottle neck orienting mechanism for a blow molding machine, including a fixed frame, a mounting plate connected to the fixed frame, a lifting cylinder vertically connected to the mounting plate, a guide rail vertically connected to the front side of the mounting plate, a lifting frame connected to the bottom of the cylinder rod of the lifting cylinder via a connecting block, and a sliding block connecting the back of the lifting frame to the guide rail for vertical guiding and sliding. A servo motor is vertically connected to the lifting frame, and the output shaft of the servo motor is connected to a reducer and a torque limiter before being connected to a drive shaft. The bottom of the drive shaft extends out from the bottom of the lifting frame and is inserted into a preform via an elastic connecting sleeve. A directional slot is vertically provided at the top. A directional hook fixing bracket is connected to the bottom of the outer side of the lifting frame. A preform directional hook is hinged to the bottom of the directional hook fixing bracket. A sensor plate is connected to the top of the preform directional hook. A counterweight is connected to the middle of the preform directional hook. A strip-shaped locking block is vertically provided on the rear bottom side of the preform directional hook. A bracket is connected to the lifting frame on the outer side of the top of the preform directional hook. An electromagnetic induction switch is connected to the bracket. Under normal conditions, the bottom of the preform directional hook tilts inward and fits tightly against the preform under the counterweight of the counterweight. The servo motor rotates and drives the preform to rotate until it engages with the directional slot and the strip-shaped locking block to achieve the orientation of the preform.

[0006] Preferably, a hydraulic buffer is connected to the mounting plate, and the lifting frame contacts the bottom of the hydraulic buffer during the upward movement to achieve cushioning.

[0007] Preferably, a number of servo motors are evenly arranged on the lifting frame along the left and right directions, and the number of servo motors corresponds one-to-one with the reducer, torque limiter, drive shaft, preform, preform orientation hook, and electromagnetic induction switch.

[0008] Preferably, the number of servo motors is 8.

[0009] This utility model has a novel structure. During the injection molding process, the position of the thread start end and the orientation slot are unified. Subsequently, under the drive of the servo motor, all preforms can be uniformly aligned according to the direction of the outer thread start end, so that the direction of the blow-molded bottle is consistent with the direction of the thread start end and the orientation slot. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention (parts of the induction sheet, bracket, and electromagnetic induction switch are omitted). Figure 2 for Figure 1 A structural diagram from a rear view; Figure 3 This is a structural diagram of the fixed frame, mounting plate, lifting cylinder, and lifting frame in this utility model; Figure 4 This is a schematic diagram of the structure of the lifting frame, servo motor, reducer, torque limiter, drive shaft, bottle preform, directional hook fixing bracket, bottle preform directional hook, induction plate, counterweight, bracket, and electromagnetic induction switch in this utility model. Figure 5 for Figure 4 Schematic diagram of the connection structure at the central directional hook; Figure 6 This is a schematic diagram of the bottle preform in this utility model; Figure 7 This is a schematic diagram of the structure of the present invention and the preform clamping mechanism; Wherein: 1—fixed frame; 2—mounting plate; 3—lifting cylinder; 4—guide rail; 5—connecting block; 6—lifting frame; 7—slider; 8—servo motor; 9—reducer; 10—torque limiter; 11—drive shaft; 12—elastic connecting sleeve; 13—preform; 131—directional slot; 14—directional hook fixing bracket; 15—preform directional hook; 151—strip-shaped locking block; 16—induction plate; 17—counterweight block; 18—bracket; 19—electromagnetic induction switch; 20—hydraulic buffer. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings.

[0012] like Figures 1 to 7 As shown, this utility model provides a bottle neck orienting mechanism for a blow molding machine, including a fixed frame 1, a mounting plate 2 connected to the fixed frame 1, a lifting cylinder 3 vertically connected to the mounting plate 2, a guide rail 4 vertically connected to the front side of the mounting plate 2, a lifting frame 6 connected to the bottom of the cylinder rod of the lifting cylinder 3 via a connecting block 5, and a sliding block 7 connecting the back of the lifting frame 6 to the guide rail 4 for vertical guiding and sliding. A servo motor 8 is vertically connected to the lifting frame 6, and the output shaft of the servo motor 8 is connected to a reducer 9 and a torque limiter 10, and then connected to a drive shaft 11. The bottom of the drive shaft 11 extends out of the bottom of the lifting frame 6 and is inserted into a preform 13 via an elastic connecting sleeve 12. A vertical orienting mechanism is provided on the preform 13. The slot 131 is connected to the bottom of the outer side of the lifting frame 6, and a directional hook fixing bracket 14 is connected to the bottom of the directional hook fixing bracket 14. A preform directional hook 15 is hinged to the bottom of the directional hook 14. A sensor plate 16 is connected to the top of the preform directional hook 15. A counterweight block 17 is connected to the middle of the preform directional hook 15. A strip-shaped locking block 151 is vertically arranged on the rear side of the bottom of the preform directional hook 15. A bracket 18 is connected to the lifting frame 6 on the outer side of the top of the preform directional hook 15. An electromagnetic induction switch 19 is connected to the bracket 18. Under normal conditions, the preform directional hook 15 tilts inward and fits tightly against the preform 13 under the counterweight of the counterweight block 17. The servo motor 8 rotates and drives the preform 13 to rotate until it engages with the directional slot 131 and the strip-shaped locking block 151 to achieve the orientation of the preform.

[0013] In the above scheme, a hydraulic buffer 20 is connected to the mounting plate 2, and the lifting frame 6 contacts the bottom of the hydraulic buffer 20 to achieve buffering during the upward process.

[0014] In addition, a number of servo motors 8 are evenly arranged on the lifting frame 6 along the left and right directions. The number of servo motors 8 corresponds one-to-one with the reducer 9, torque limiter 10, drive shaft 11, preform 13, preform orientation hook 15, and electromagnetic induction switch 19.

[0015] Specifically, there are eight servo motors 8.

[0016] The working principle of this utility model is as follows; The preform clamping mechanism clamps the heated preforms and places them below the lifting frame 6. The lifting cylinder 3 is activated, pushing the lifting frame 6 downwards. A row of elastic connecting sleeves 12 at the bottom of the drive shaft 11 inserts into a row of preforms 13 on the preform clamping mechanism. The preform clamping mechanism releases its grippers, and the servo motor 8 is activated. The servo motor 8 drives the drive shaft 11 to rotate, causing the vertical orientation slots 131 on the surface of the preforms 13 to engage with the strip-shaped locking blocks 151 on the preform orientation hooks 15. At this point, the drive shaft 11 stops rotating due to the engagement at the bottom. Machine 8 continues to rotate, and the torque limiter 10 slips between its upper and lower sections, keeping the lower drive shaft 11 stationary until the electromagnetic induction switch 19 on the outside of the preform 13 sends a signal to control the servo motor 8 to shut down. Once all the servo motors 8 receive the signal and shut down, the preform clamping mechanism controls the grippers to clamp and hold the preform. The lifting cylinder 3 pulls the lifting frame 6 upward, and the preform 13 disengages from the elastic connecting sleeve 12. The preform clamping mechanism then clamps the entire row of preforms 13 and sends them into the blow molding die for blowing, thereby achieving uniform bottle mouth orientation for all preforms 13.

[0017] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A bottle neck orienting mechanism for a blow molding machine, comprising a fixing frame (1), characterized in that: The mounting plate (2) is connected to the fixed frame (1). The lifting cylinder (3) is vertically connected to the mounting plate (2). The guide rail (4) is vertically connected to the front side of the mounting plate (2). The bottom of the cylinder rod of the lifting cylinder (3) is connected to the lifting frame (6) through the connecting block (5). The back of the lifting frame (6) is connected to the guide rail (4) through the slider (7) to achieve up and down guiding sliding. The servo motor (8) is vertically connected to the lifting frame (6). The output shaft of the servo motor (8) is connected to the reducer (9) and the torque limiter (10) and then connected to the drive shaft (11). The bottom of the drive shaft (11) extends out of the bottom of the lifting frame (6) and then inserts the preform (13) through the elastic connecting sleeve (12). The preform (13) is vertically provided with the directional slot (131). The lifting frame (6) The bottom of the outer side is connected to a directional hook fixing bracket (14), the bottom of the directional hook fixing bracket (14) is hinged to a preform directional hook (15), the top of the preform directional hook (15) is connected to an induction plate (16), the middle of the preform directional hook (15) is connected to a counterweight block (17), the bottom rear side of the preform directional hook (15) is vertically provided with a strip-shaped locking block (151), the lifting frame (6) on the outer side of the top of the preform directional hook (15) is connected to a bracket (18), the bracket (18) is connected to an electromagnetic induction switch (19); under normal conditions, the bottom of the preform directional hook (15) is tilted inward and close to the preform (13) under the counterweight of the counterweight block (17), the servo motor (8) rotates and drives the preform (13) to rotate to the directional slot (131) and engage with the strip-shaped locking block (151) to realize the orientation of the preform.

2. The bottle neck orientation mechanism for a blow molding machine according to claim 1, characterized in that: A hydraulic buffer (20) is connected to the mounting plate (2), and the lifting frame (6) contacts the bottom of the hydraulic buffer (20) to achieve buffering during the lifting process.

3. The bottle neck orientation mechanism for a blow molding machine according to claim 1, characterized in that: The lifting frame (6) has several servo motors (8) evenly arranged along the left and right directions. The number of servo motors (8) corresponds one-to-one with the reducer (9), torque limiter (10), drive shaft (11), preform (13), preform orientation hook (15), and electromagnetic induction switch (19).

4. The bottle neck orientation mechanism for a blow molding machine according to claim 3, characterized in that: The number of servo motors (8) is 8.

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