Blow-molded bottle opening cutting device

Abstract

The utility model discloses a blow molding bottle opening cutting device which comprises a base, a bottle body placing position, a positioning pressing plate, two synchronous air cylinders, a rotary driving motor and a cutting mechanism. The bottle body placing position and the rotary driving motor are both arranged on the base, the bottoms of the two synchronous air cylinders are symmetrically fixed to the base relative to the bottle body placing position, and the ends of telescopic rods of the two synchronous air cylinders are connected with the bottom face of the positioning pressing plate. The bottom face of the positioning pressing plate is provided with a bottle pressing position corresponding to the bottle body containing position, the cutting-off mechanism is installed at the front end of the bottle pressing position, the position of a tool bit on the cutting-off mechanism is adjustable, a carrier roller set composed of a pair of carrier rollers is installed in the bottle body containing position, a pressing roller set composed of a pair of pressing rollers is installed in the bottle pressing position, and the cutting-off mechanism is installed on the bottom face of the positioning pressing plate. And the carrier roller group is connected with the rotary driving motor. By means of the mode, the production efficiency of the bottle opening trimming procedure in the blow molding production line can be effectively improved, and meanwhile the defective rate is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the field of blow molding equipment, in particular to a cutting device for the mouth of a blow molded bottle. Background Art

[0002] After blow molding a blow molded bottle, a certain amount of sprue material will remain at the mouth position due to the mold design. Therefore, after the blow molding process is completed, a cutter is needed to remove the excess sprue material and trim the mouth of the bottle to facilitate cooperation with the bottle cap. The traditional trimming method is for on-site personnel to use a special cutting device for cutting. However, when using the traditional cutting device, manual alignment is required, and each time the material is cut, the worker needs to manually press with a large force. Therefore, the work efficiency is not high, and the arm is prone to fatigue. After long-term repeated operations, sometimes the alignment is inaccurate, resulting in defective products. Summary of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide a cutting device for the mouth of a blow molded bottle, which can quickly cut the mouth of the bottle and save manpower.

[0004] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a cutting device for the mouth of a blow molded bottle, the cutting device for the mouth of a blow molded bottle includes: a base, a bottle body placement position, a positioning pressing plate, a synchronous cylinder, a rotary drive motor, and a cutting mechanism; the bottle body placement position and the rotary drive motor are both arranged on the base, there are two synchronous cylinders in total, the bottoms of the two synchronous cylinders are symmetrically fixed on the base with respect to the bottle body placement position, the ends of the telescopic rods of the two synchronous cylinders are connected to the bottom surface of the positioning pressing plate, a bottle pressing position corresponding to the bottle body placement position is provided on the bottom surface of the positioning pressing plate, the cutting mechanism is installed at the front end of the bottle pressing position, the position of the cutter head on the cutting mechanism is adjustable, a pair of rollers constituting a roller group is installed in the bottle body placement position, a pair of pressure rollers constituting a pressure roller group is installed in the bottle pressing position, and the roller group is connected to the rotary drive motor.

[0005] In a preferred embodiment of the present utility model, the bottle body placement position includes a front roller plate and a rear roller plate. The front roller plate is fixed to the front side of the base, and the rear roller plate is fixed to the rear side of the base. The central axis planes of the front roller plate and the rear roller plate are coplanar. An inwardly concave lower positioning bayonet is provided in the middle of the front roller plate. Two rollers in the roller group are symmetrically installed between the front roller plate and the rear roller plate with respect to the central axis plane. One of the two rollers is a driving roller and the other is a driven roller. The tail ends of the roller shafts of the driving roller and the driven roller both pass through the rear roller plate. The roller shaft of the driving roller is connected to the roller shafts of the driven roller and the power output end of the rotary drive motor through a belt. The rear roller plate is a square plate, and the top edge of the square plate is not lower than the roller surface height of the rollers. A front limiting mechanism is further provided on the outer side of the front roller plate. The front limiting mechanism includes an elastic plate, an elastic plate seat, and a pull rod. The elastic plate is installed in the elastic plate seat. The elastic plate seat is fixed to the top end of the pull rod. The rod body of the pull rod is installed in a pull rod installation hole preset on the plate surface of the front roller plate. The height of the elastic plate exceeds the height of the bottle mouth of the blow molded bottle.

[0006] In a preferred embodiment of the present utility model, the bottle pressing position includes a front pressing roller plate and a rear pressing roller plate. The front pressing roller plate is fixed to the front side of the positioning pressing plate, and the rear pressing roller plate is fixed to the rear side of the positioning pressing plate. The central axis planes of the front pressing roller plate and the rear pressing roller plate are coplanar. An inwardly concave upper positioning bayonet is provided at the middle position of the front pressing roller plate. There are two pressing rollers symmetrically installed between the front pressing roller plate and the rear pressing roller plate with respect to the central axis plane. The cutting mechanism is installed in the upper positioning bayonet. The rear pressing roller plate is a square plate, and the bottom edge of the square plate is lower than the lowest point of the roller surface of the pressing rollers.

[0007] In a preferred embodiment of the present utility model, the cutting mechanism includes a cutter head, a cutter tube, and a cutter seat. The cutter seat is a long strip slider with a T-shaped cross-section. The cutter tube is vertically fixed to the cutter seat. The cutter head is installed in the cutter tube. A chute matching the cross-sectional shape of the long strip slider is provided at the bottom of the upper bayonet of the front pressing roller plate. After the cutter seat is inserted into the chute, it can horizontally move along the direction determined by the chute, driving the cutter head to move to adjust the cutting position. An internally threaded hole communicating with the top of the chute is further provided at the top of the front pressing roller plate. A fastening screw is installed in the internally threaded hole. A buffer spring is installed in the cutter tube.

[0008] The beneficial effects of the present utility model are as follows: The present utility model is a part of the bottle body blow molding production line. When in use, the present product positions the placement position of the bottle body through a rotatable roller group, then drives the positioning pressing plate to press the bottle body by a synchronous cylinder, and finally drives the bottle body to rotate towards the cutting edge of the cutter of the preset cutting mechanism through a rotary drive motor, and automatically cuts off the redundant sprue material at the bottle mouth by the cutter. The whole process is completely automatically completed by the machine, the processing action is fast and stable, no additional force is required, and the production efficiency of the bottle mouth trimming process in the blow molding bottle production line can be effectively improved while significantly reducing the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a front structural schematic diagram of a preferred embodiment of the present utility model;

[0010] Figure 2 is a back structural schematic diagram of the shown embodiment;

[0011] Figure 3 is a side structural schematic diagram of the shown embodiment;

[0012] The markings of the various components in the drawings are as follows:

[0013] 1. Bottle body, 2. Base, 3. Synchronous cylinder, 4. Positioning pressing plate, 5. Front end plate of the pressing roller, 6. Rear end plate of the pressing roller, 7. Front end plate of the supporting roller, 8. Rear end plate of the supporting roller, 9. Pressing roller group, 10. Supporting roller group, 11. Tool bit, 12. Tool holder, 13. Tool tube, 14. Fastening screw, 15. Second transmission wheel, 16.

[0014] Fourth transmission wheel, 17. Rotary drive motor, 18. First transmission wheel, 19. Spring seat, 20.

[0015] Pull rod, 21. Spring plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following elaborates in detail on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0017] Please refer to Figures 1 to 3 , the content of the embodiment of the present utility model includes:

[0018] A blowing bottle neck cutting device, the blowing bottle neck cutting device includes: a base 2, a bottle body placement position, a positioning pressing plate 4, a synchronous cylinder 3, a rotary drive motor 17 and a cutting mechanism; the bottle body placement position and the rotary drive motor 17 are both arranged on the base 2, there are two synchronous cylinders 3 in total, the bottoms of the two synchronous cylinders 3 are symmetrically fixed on the base 2 with respect to the bottle body placement position, the ends of the telescopic rods of the two synchronous cylinders 3 are connected to the bottom surface of the positioning pressing plate 4, a bottle pressing position is provided on the bottom surface of the positioning pressing plate 4, the bottle pressing position is directly above the bottle body placement position, the cutting mechanism is installed at the front end of the bottle pressing position, the position of the cutter head 11 on the cutting mechanism is adjustable, a pair of rollers constituting a roller group 10 is installed in the bottle body placement position, a pair of rollers constituting a roller group 9 is installed in the bottle pressing position, the roller group 10 is connected to the rotary drive motor 17 by a belt, so that the rotary drive motor 17 can drive the rollers to rotate, thereby driving the bottle body 1 to rotate and cut off the bottle neck after the cutter head 11 of the cutting mechanism cuts into the bottle neck.

[0019] The bottle body placement position includes a front roller plate 7 and a rear roller plate 8, the front roller plate 7 is fixed on the front side of the base 2, the rear roller plate 8 is fixed on the rear side of the base 2 and the central planes of the front roller plate 7 and the rear roller plate 8 are coplanar, a concave lower positioning bayonet is provided in the middle of the front roller plate 7, the two rollers in the roller group 10 are symmetrically installed between the front roller plate 7 and the rear roller plate 8 with respect to the central plane, one of the two rollers is a driving roller and the other is a driven roller, the ends of the roller shafts of the driving roller and the driven roller both pass through the rear roller plate 8, a second transmission wheel 15 and a third transmission wheel are provided on the roller shaft of the driving roller, a fourth transmission wheel 16 is provided on the roller shaft of the driven roller, a first transmission electric wheel 18 is installed on the power output shaft of the rotary drive motor 17, transmission belts are installed between the first transmission wheel 18 and the second transmission wheel 15 and between the third transmission wheel and the fourth transmission wheel 16, so that the entire roller group 10 can be driven to rotate simultaneously by rotating the rotary drive motor 17, thereby driving the bottle body 1 and the roller group 9 to rotate simultaneously.

[0020] The rear roller plate 8 is a square plate, the top edge of the square plate is not lower than the roller surface height of the rollers, generally about 2 cm higher, such a setting of the rear roller plate 8 can effectively prevent the bottle body 1 of the blowing bottle placed in the bottle body placement position from sliding backward after being stressed.

[0021] On the outer side of the front end plate 7 of the idler roller, a front limiting mechanism is further provided. The front limiting mechanism includes an elastic plate 21, an elastic plate seat 19 and a pull rod 20. The elastic plate 21 is installed in the elastic plate seat 19. The elastic plate seat 19 is fixed at the top end of the pull rod 20. The rod body of the pull rod 20 is installed in a pull rod installation hole preset on the plate surface of the front end plate 7 of the idler roller. The height of the elastic plate 21 exceeds the height of the bottle mouth of the blow-molded bottle. By setting the front limiting mechanism, not only can the forward movement of the bottle body 1 during the bottle mouth cutting process and the outward ejection of the sprue material after cutting be prevented, but also the sprue material can only fall to both sides, which is convenient for collection below. Moreover, due to the adoption of the pull rod structure, during actual work, the corresponding length can be pulled according to the needs of the bottle body 1 specifications, improving the applicable range of the entire device.

[0022] The bottle pressing position includes a front end plate 5 of the pressing roller and a rear end plate 6 of the pressing roller. The front end plate 5 of the pressing roller is fixed on the front side of the positioning pressing plate 4, and the rear end plate 6 of the pressing roller is fixed on the rear side of the positioning pressing plate 4. The center line of the front end plate 5 of the pressing roller and the central axis plane of the rear end plate 6 of the pressing roller are coplanar. An inwardly concave upper positioning bayonet is provided at the middle position of the front end plate 5 of the pressing roller. Two pressing rollers in the pressing roller group 9 are symmetrically installed about the central axis plane between the front end plate 5 of the pressing roller and the rear end plate 6 of the pressing roller. The cutting mechanism is installed in the upper positioning bayonet. The rear end plate 6 of the pressing roller is a square plate, and the bottom edge of the square plate is lower than the lowest point of the roller surface of the pressing roller, generally 2 cm lower than the lowest point of the roller surface in practice. In this way, the bottle pressing position formed by the pressing roller group 10 can align with the bottle body placement position when pressing down, and can rotate with the rotation of the bottle body 1 after pressing down to complete the circumferential cutting of the sprue material.

[0023] The cutting mechanism includes a cutter head 11, a cutter tube 13 and a cutter seat 12. The cutter seat 11 is a long strip slider with a T-shaped cross section. The cutter tube 13 is vertically fixed on the cutter seat 12. The cutter head 11 is installed in the cutter tube 13. A chute matching the cross-sectional shape of the long strip slider is provided at the bottom of the upper bayonet on the front end plate 5 of the pressing roller. After the cutter seat 12 is inserted into the chute, it can move horizontally along the direction determined by the chute, driving the cutter head 11 to move and adjusting the cutting position. In this way, the position of the cutter head 11 can be adjusted according to the specifications of the bottle body 1 to meet the needs of cutting different types of bottle mouths.

[0024] An internal threaded hole communicating with the top of the chute is further provided at the top of the front end plate 5 of the pressing roller, and a fastening screw 14 is installed in the internal threaded hole. In this way, after the position of the cutting edge 11 is adjusted in place, the position of the cutter head 11 can be fixed by tightening the fastening screw 14. A buffer spring is installed in the cutter tube 12. By installing the buffer spring, the impact force when the cutter head 11 pierces into the bottle mouth position to be cut along with the falling of the positioning pressing plate can be alleviated, preventing the cutter tip from breaking.

[0025] The working principle of the present utility model is as follows:

[0026] During actual operation, first pull the pull rod 20 according to the bottle body specification, so that the distance between the spring plate 21 and the rear end plate 8 of the idler is matched with the length of the bottle body 1. Then pull the tool holder 12 to make the position of the tool head 11 directly above the position to be cut. Then start the cutting work. When starting the work, first place the bottle body 1 on the idler set 10, with the bottom of the bottle body 1 abutted against the rear end plate 8 of the idler. Then start the synchronous cylinder 3, and the telescopic rod contracts to press the pressure roller set 9 on the bottle body 1. At this time, the tool head 11 just penetrates into the position to be cut inside the bottle mouth. Then start the rotary drive motor 17 to drive the idler set 10 to rotate, so that the bottle body 1 rotates one circle against the cutting edge, and the excess nozzle material is automatically cut off and falls from both sides. It is simple and fast to use, and the nozzle material will not fly around randomly after being cut off, which is convenient for recycling.

[0027] 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 blow-molded bottle mouth cutting device, characterized in that: The blow molding bottle mouth cutting device comprises: a base, a bottle body placement position, a positioning pressure plate, a synchronous cylinder, a rotary drive motor and a cutting mechanism; the bottle body placement position and the rotary drive motor are both arranged on the base, there are two synchronous cylinders in total, the bottoms of the two synchronous cylinders are symmetrically fixed on the base with respect to the bottle body placement position, the ends of the telescopic rods of the two synchronous cylinders are connected to the bottom surface of the positioning pressure plate, a bottle pressing position corresponding to the bottle body placement position is provided on the bottom surface of the positioning pressure plate, the cutting mechanism is installed at the front end of the bottle pressing position, the position of the cutter head on the cutting mechanism is adjustable, a roller group consisting of a pair of rollers is installed in the bottle body placement position, a roller group consisting of a pair of rollers is installed in the bottle pressing position, and the roller group is connected to the rotary drive motor.

2. The blow-molded bottle mouth cutting device according to claim 1, characterized in that: The bottle body placement position includes a front end plate of a roller and a rear end plate of a roller, the front end plate of the roller is fixed on the front side of the base, the rear end plate of the roller is fixed on the rear side of the base, and the central axis surfaces of the front end plate of the roller and the rear end plate of the roller are coplanar, an inwardly concave lower positioning slot is provided in the middle of the front end plate of the roller, two rollers in the roller group are symmetrically installed between the front end plate of the roller and the rear end plate of the roller about the central axis surface, one of the two rollers is an active roller, and the other is a passive roller, the tail ends of the roller shafts of the active roller and the passive roller both pass through the rear end plate of the roller, and the roller shaft of the active roller is simultaneously connected to the roller shaft of the passive roller and the power output end of the rotating drive motor through a belt.

3. The blow-molded bottle mouth cutting device according to claim 2, characterized in that: The rear end plate of the roller is a square plate, and the top edge of the square plate is not lower than the roller surface height of the roller.

4. The blow-molded bottle mouth cutting device according to claim 2, characterized in that: A front limiting mechanism is also provided on the outer side of the front end plate of the roller.

5. The blow-molded bottle mouth cutting device according to claim 4, characterized in that: The front limiting mechanism includes a spring plate, a spring plate seat and a pull rod, the spring plate is installed in the spring plate seat, the spring plate seat is fixed to the top of the pull rod, the rod body of the pull rod is installed in a preset pull rod mounting hole on the plate surface of the front end plate of the roller, and the height of the spring plate exceeds the bottle mouth height of the blow-molded bottle.

6. The blow-molded bottle mouth cutting device according to claim 1, characterized in that: The bottle pressing position includes a front end plate of a pressing roller and a rear end plate of a pressing roller, the front end plate of the pressing roller is fixed to the front side of the positioning pressing plate, the rear end plate of the pressing roller is fixed to the rear side of the positioning pressing plate, the central axis surfaces of the front end plate of the pressing roller and the rear end plate of the pressing roller are coplanar, an inner concave upper positioning bayonet is provided in the middle position of the front end plate of the pressing roller, the pressing roller has two symmetrically installed between the front end plate of the pressing roller and the rear end plate of the pressing roller about the central axis surface, and the cutting mechanism is installed in the upper positioning bayonet.

7. The blow-molded bottle mouth cutting device according to claim 6, characterized in that: The rear end plate of the pressing roller is a square plate, and the bottom edge of the square plate is lower than the lowest point of the roller surface of the pressing roller.

8. The blow-molded bottle mouth cutting device according to claim 1, characterized in that: The cutting mechanism includes a cutter head, a cutter tube and a cutter seat. The cutter seat is a long slider with a T-shaped cross-section. The cutter tube is fixed vertically downward on the cutter seat. The cutter head is installed in the cutter tube. The bottom of the upper clamping mouth of the front end plate of the pressure roller is provided with a slide groove matching the cross-sectional shape of the long slider. After the cutter seat is installed in the slide groove, it can move horizontally along the direction determined by the slide groove, driving the cutter head to move and adjust the cutting position.

9. The blow-molded bottle mouth cutting device according to claim 8, characterized in that: The top of the front end plate of the pressure roller is also provided with an internal threaded hole which is communicated with the top of the slide groove, and a fastening screw is installed in the internal threaded hole.

10. The blow-molded bottle mouth cutting device according to claim 8, characterized in that: A buffer spring is installed in the knife tube.

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