A plastic bottle processing tail cutting device

Abstract

The utility model discloses a kind of tail cutting devices of plastic bottle processing, belong to tail cutting device technical field, it includes pedestal, the rear of the pedestal upper end face is equipped with mobile tail cutting structure, the center of the pedestal upper end face is equipped with clamping structure on two sides, the center of the pedestal upper end face is equipped with dust extraction structure in front, in addition, the utility model, by the combination of multiple buffer columns and compression springs of rectangular arrangement, can realize multiple point elastic contact according to the actual shape of plastic bottle, avoid the damage of bottle body caused by local stress concentration, the sliding fit design of sliding plate and clamping plate, so that rubber clamping pad can automatically adjust contact angle with bottle body contour, always keep maximum contact area in clamping process, solve the problem that fixed clamping surface is unstable to special-shaped bottle body clamping, the elastic coefficient of compression spring is optimized design, enough clamping force can be provided to ensure that bottle body does not shake when cutting, and overload protection can be realized through excessive compression when sudden external force, reduce equipment failure rate.

Description

Technical Field

[0001] This utility model belongs to the technical field of tail-cutting devices, specifically a tail-cutting device for processing plastic bottles. Background Technology

[0002] In automated production lines for plastic bottles, blow molding is one of the core processing steps. This process naturally creates an extra, irregular piece of plastic tail material at the bottom of the bottle, often referred to as the bottle tail or waste tail in the industry. This tail material not only affects the appearance integrity of the plastic bottle, but also makes it difficult to accurately position subsequent filling, labeling, and other processes. It can even cause the bottles to be unstable when stacked during transportation due to the protruding tail material. Therefore, it is necessary to trim the tail of the molded plastic bottles to ensure that the products meet the factory standards.

[0003] Existing plastic bottle processing tail-cutting devices have the following main shortcomings: Existing plastic bottle cutting devices are only compatible with single-size plastic bottles. Frequent clamp changes are required for bottles of different diameters and heights, making operation cumbersome and time-consuming. Excessive clamping force can cause deformation and cracking of thin-walled bottles, while insufficient force can cause bottle wobbling during cutting, resulting in skewed cuts and severe burrs. Furthermore, the devices cannot accurately match the tail position for different bottle shapes. The cutting blade's rotation speed and movement speed are mostly fixed values, which can lead to either incomplete cutting or over-cutting, causing bottle breakage, depending on the material of the plastic bottle. Plastic debris generated during the cutting process is collected naturally through an open funnel, which easily spreads into the workshop with airflow, causing dust pollution and affecting the health of operators. Additionally, the funnel-type collection system is prone to debris accumulation and blockage, requiring frequent manual cleaning, which not only increases labor intensity but also interrupts the production process and reduces overall processing efficiency. Utility Model Content

[0004] To overcome the aforementioned shortcomings, this utility model provides a plastic bottle processing tail-cutting device. This solves the problems of existing technologies that only adapt to a single specification of plastic bottle, requiring frequent clamp changes for bottles of different diameters and heights, resulting in cumbersome and time-consuming operations. Furthermore, excessive clamping force can easily cause deformation and cracking of thin-walled bottles, while insufficient force can cause bottle wobbling during cutting, leading to skewed cuts and severe burrs. It also cannot accurately match the tail-handle position for different bottle types. Moreover, the cutting blade's rotation speed and movement speed are mostly fixed values, which can easily lead to incomplete cutting or over-cutting, causing bottle breakage, depending on the cutting requirements of different plastic bottle materials. Plastic debris generated during the tail-cutting process is mostly collected naturally through an open funnel, which easily spreads into the workshop with airflow, causing dust pollution and affecting the health of operators. Additionally, funnel-type collection is prone to debris accumulation and blockage, requiring frequent manual cleaning, which not only increases labor intensity but also interrupts the production process and reduces overall processing efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic bottle processing tail-cutting device, comprising a base, a movable tail-cutting structure provided at the rear of the upper end face of the base, a clamping structure provided at both sides of the center of the upper end face of the base, and a dust-collecting structure provided at the front of the center of the upper end face of the base; The movable tail-cutting structure includes a front-back moving component, a lifting component, and a tail-cutting component. The front-back moving component includes a first sliding groove, which is located at the rear center of the upper end face of the base. A first servo motor is located at the upper center of one side wall of the base. The output end of the first servo motor passes through the rear end face of the base and the rear end face of the first sliding groove and extends into the interior of the first sliding groove. A first lead screw is fixedly connected to the end of the first servo motor.

[0006] As a further embodiment of this utility model: the lifting assembly includes a lifting frame, the lifting frame is threaded onto the outer wall of the first lead screw, a second sliding groove is provided at the upper center of the front end face of the lifting frame, and a second servo motor is provided at the front center of the upper end face of the lifting frame.

[0007] As a further embodiment of this utility model: the output end of the second servo motor passes through the upper end face of the lifting frame and the upper end face of the second slide groove to the inside of the second slide groove, and the end is fixedly connected to a second lead screw. The tail-cutting assembly includes a slider, the slider is threaded on the outer wall of the second lead screw, and a third servo motor is provided at the lower center of the front inner wall of the slider.

[0008] As a further embodiment of this utility model: the output end of the third servo motor passes through the inner wall of the slider and extends to the front end face of the slider, and a cutting blade is fixedly connected to the end of the cutting blade, and a fixing member is threadedly rotatably connected to the center of the front end face of the cutting blade.

[0009] As a further embodiment of this utility model: the clamping structure includes a third sliding groove, which is located at the center of the upper end face of the base. A connecting block is provided at the center of the third sliding groove, and a fourth servo motor is provided at the upper center of one side wall of the base.

[0010] As a further embodiment of this utility model: the output end of the fourth servo motor passes through one side wall of the base and one side wall of the third slide groove to the inside of the third slide groove, and a third lead screw is fixedly connected to its end. One end of the third lead screw passes through one side wall of the connecting block to the other side wall of the connecting block, and a fourth lead screw is fixedly connected to its end.

[0011] As a further embodiment of this utility model: the third lead screw and the fourth lead screw are configured with opposite threads, and the outer walls of the third lead screw and the fourth lead screw are threaded with clamping plates. A sliding plate is provided at the upper center of one side wall of each of the two clamping plates, and multiple buffer columns are arranged in a rectangular pattern at the center of one side wall of each of the two sliding plates.

[0012] As a further embodiment of this utility model: a compression spring is sleeved on the outer wall of each of the plurality of buffer columns, a rubber clamping pad is provided at the center of one side wall of each of the plurality of buffer columns, and two sliding plates are slidably connected to the upper surface of the two clamping plates respectively.

[0013] As a further embodiment of this utility model: the two suction structures include two suction pumps, which are respectively arranged on both sides of the upper end face of the base. The output end of each suction pump is provided with a suction pipe. Both suction pipes are inclined and their ends are arranged on the upper end face of the clamping structure. A waste bin is slidably connected to the center of the base.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the combination of multiple rectangularly arranged buffer pillars and compression springs, can achieve multi-point elastic contact according to the actual shape of the plastic bottle, avoiding bottle damage caused by local stress concentration. The sliding cooperation design of the sliding plate and the clamping plate allows the rubber clamping pad to automatically adjust the contact angle according to the bottle contour, maintaining the maximum contact area at all times during clamping. This solves the problem of unstable clamping of irregularly shaped bottles by the fixed clamping surface. The elastic coefficient of the compression spring has been optimized to provide sufficient clamping force to ensure that the bottle does not shake during cutting, and to achieve overload protection through excessive compression in the event of sudden external force, thereby reducing the equipment failure rate.

[0015] This invention features an adjustable-angle suction pipe installation structure, allowing the suction port position to automatically match the cutting area of ​​bottles of different sizes as the clamping structure is adjusted, ensuring maximum suction efficiency. The suction pump and the third servo motor employ a linkage start mechanism, starting the suction system in advance to establish a negative pressure field before cutting begins and delaying its shutdown after cutting, completely solving the problem of debris escape caused by timing misalignment. The two suction pipes converge in a figure-eight shape from both sides into the waste bin, forming a bidirectional airflow that envelops the cutting area. Combined with the airflow disturbance generated by the rotation of the cutting blade, this improves the debris collection rate and significantly enhances the working environment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional orthographic structural diagram of the present invention; Figure 3 This is a side sectional view of the present invention. Figure 4 for Figure 2 A magnified structural diagram of point A in the middle.

[0017] In the diagram: 1. Base; 2. Moving shear structure; 201. First slide rail; 202. First servo motor; 203. First lead screw; 204. Lifting frame; 205. Second slide rail; 206. Second servo motor; 207. Second lead screw; 208. Slider; 209. Third servo motor; 210. Cutting blade; 211. Fixing component; 3. Clamping structure; 301. Third slide rail; 302. Connecting block; 303. Fourth servo motor; 304. Third lead screw; 305. Fourth lead screw; 306. Clamping plate; 307. Sliding plate; 308. Buffer column; 309. Compression spring; 310. Rubber clamping pad; 4. Dust collection structure; 401. Dust pump; 402. Dust collection pipe; 403. Waste bin. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] like Figures 1-4 As shown, this utility model provides a technical solution: A plastic bottle processing tail-cutting device, comprising: The base 1 has a movable shearing structure 2 at the rear of the upper surface of the base 1, a clamping structure 3 at the center of the upper surface of the base 1 near both sides, and a dust suction structure 4 at the center of the upper surface of the base 1 near the front.

[0020] The movable tail-scissor structure 2 includes a front-to-back moving assembly, a lifting assembly, and a tail-scissor assembly. The front-to-back moving assembly includes a first slide groove 201, which is located at the rear center of the upper end face of the base 1. A first servo motor 202 is located at the upper center of one side wall of the base 1. The output end of the first servo motor 202 passes through the rear end face of the base 1 and the rear end face of the first slide groove 201, and is connected to the interior of the first slide groove 201. A first lead screw 203 is fixedly connected to the end of the first servo motor 202. The lifting assembly includes a lifting frame 204, which is threaded onto the outer wall of the first lead screw 203. A second slide groove 205 is located at the upper center of the front end face of the lifting frame 204. A second servo motor 206 is provided at the front center of the surface. The output end of the second servo motor 206 passes through the upper surface of the lifting frame 204 and the upper surface of the second slide 205 to the inside of the second slide 205. The end of the second servo motor 206 is fixedly connected to a second lead screw 207. The tail-cutting assembly includes a slider 208. The slider 208 is threaded on the outer wall of the second lead screw 207. A third servo motor 209 is provided at the lower center of the front inner wall of the slider 208. The output end of the third servo motor 209 passes through the front inner wall of the slider 208 to the front end face of the slider 208. The end of the third servo motor 209 is fixedly connected to a cutting blade 210. A fixing member 211 is threadedly rotatably connected to the center of the front end face of the cutting blade 210.

[0021] By starting the first servo motor 202, the first lead screw 203 is driven to rotate, causing the threaded lifting frame 204 to move back and forth along the first slide groove 201, adjusting the tail-cutting assembly to the corresponding front and rear position of the plastic bottle tail. By starting the second servo motor 206, the second lead screw 207 is driven to rotate, causing the slider 208 to move up and down along the second slide groove 205, adjusting the cutting blade 210 to a height matching the plastic bottle tail. By starting the third servo motor 209, its output end drives the cutting blade 210 to rotate at high speed. The fixing part 211 ensures the stability of the cutting blade 210. The rotating cutting blade 210 precisely cuts the plastic bottle tail, completing the tail-cutting process.

[0022] The clamping structure 3 includes a third slide groove 301, which is located at the center of the upper end face of the base 1. A connecting block 302 is located at the center of the third slide groove 301. A fourth servo motor 303 is located near the center of one side wall of the base 1. The output end of the fourth servo motor 303 passes through one side wall of the base 1 and one side wall of the third slide groove 301 and extends into the third slide groove 301. A third lead screw 304 is fixedly connected to the end of the fourth lead screw 304. One end of the third lead screw 304 passes through one side wall of the connecting block 302 and extends to the other side wall of the connecting block 302. A fourth lead screw 305 is fixedly connected to the end of the third lead screw 304 and the fourth lead screw 305. The third lead screw 304 and the fourth lead screw 305 are threaded in opposite directions. Clamping plates 306 are threaded onto the outer walls of both the third lead screw 304 and the fourth lead screw 305. Sliding plates 307 are located near the center of one side wall of each clamping plate 306. Multiple buffer pillars 308 are arranged in a rectangular pattern at the center of one side wall of the base 1. Compression springs 309 are fitted on the outer walls of the multiple buffer pillars 308. Rubber clamping pads 310 are provided at the center of one side wall of the multiple buffer pillars 308. Two sliding plates 307 are slidably connected to the upper surfaces of two clamping plates 306. By placing the plastic bottle to be processed in the central area of ​​the base 1, it is positioned between the two sets of clamping structures 3. By starting the fourth servo motor 303, its output end drives the third lead screw 304 and the fourth lead screw 305 to rotate synchronously with opposite threads. This causes the two clamping plates 306 fitted on the outer side of the lead screw to move relative to each other along the third sliding groove 301. When the rubber clamping pads 310 contact the side wall of the plastic bottle, the buffer pillars 308 and the compression springs 309 are compressed by force, and the bottle is prevented from being pinched through elastic buffering. Finally, the plastic bottle is stably clamped in the center position.

[0023] The two suction structures 4 include two suction pumps 401, which are respectively located on the front side of the upper surface of the base 1. Each suction pump 401 has a suction pipe 402 at its output end. Both suction pipes 402 are inclined and their ends are located on the upper surface of the clamping structure 3. A waste bin 403 is slidably connected to the center of the base 1. During the tail cutting process, the suction pumps 401 are started simultaneously. The negative pressure generated is sucked into the plastic debris produced by cutting through the inclined suction pipes 402. Finally, the debris falls into the waste bin 403 slidably connected inside the base 1, realizing the centralized collection of waste.

[0024] The working principle of this utility model is as follows: By placing the plastic bottle to be processed in the central area of ​​the base 1, ensuring that the axis of the bottle body is aligned with the center of the clamping structure 3 and the tail of the bottle faces the direction of the moving shearing structure 2, after the plastic bottle to be processed is placed, the fourth servo motor 303 is started to drive the third lead screw 304 and the fourth lead screw 305 to rotate in opposite directions, so that the two clamping plates 306 move relative to each other and in opposite directions along the third sliding groove 301, thereby clamping and releasing the plastic bottle. The connecting block 302 provides support for the lead screw. The system consists of a buffer column 308 and a compression spring 309. When the rubber clamping pad 310 contacts the bottle body, the compression spring 309 is compressed to generate a buffer force, avoiding damage to the bottle body by rigid clamping. The sliding plate 307 slides with the clamping plate 306 to ensure that the rubber clamping pad 310 always fits against the surface of the bottle body, improving the clamping stability.

[0025] After the plastic bottle to be processed is clamped, the first servo motor 202 drives the first lead screw 203 to rotate. The first lead screw 203 converts the rotational motion into linear motion of the lifting frame 204 along the first slide groove 201, realizing the adjustment of the front and rear position of the tail-cutting assembly. The second servo motor 206 drives the second lead screw 207 to rotate. Through the threaded engagement between the second lead screw 207 and the slider 208, the rotational motion is converted into vertical lifting and lowering of the slider 208 along the second slide groove 205, realizing the height adjustment of the cutting blade 210. Three servo motors 209 directly drive the cutting blade 210 to rotate at high speed. The fixing part 211 ensures the coaxiality and stability of the cutting blade 210. The high-speed blade completes the cutting of the plastic bottle tail. At the same time, the vacuum pump 401 is started to generate negative pressure. The inclined vacuum pipe 402 forms a directional airflow to suck in the plastic debris generated by cutting. The inclined design of the vacuum pipe 402 uses gravity to assist the debris to fall smoothly into the waste bin 403 inside the base 1. The waste bin 403 adopts a sliding connection for easy periodic removal and cleaning.

[0026] Furthermore, the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Since this utility model is used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0027] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A device for cutting the tail of a plastic bottle, characterized in that: Includes a base (1), a movable scissor structure (2) is provided at the rear of the upper end face of the base (1), a clamping structure (3) is provided at the center of the upper end face of the base (1) near both sides, and a dust suction structure (4) is provided at the center of the upper end face of the base (1) near the front. The movable tail-cutting structure (2) includes a front-to-back moving component, a lifting component and a tail-cutting component. The front-to-back moving component includes a first slide groove (201). The first slide groove (201) is located at the rear center of the upper end face of the base (1). A first servo motor (202) is located at the upper center of one side wall of the base (1). The output end of the first servo motor (202) passes through the rear end face of the base (1) and the rear end face of the first slide groove (201) and communicates with the interior of the first slide groove (201). A first lead screw (203) is fixedly connected to the end of the first servo motor (202).

2. The plastic bottle processing tail-cutting device according to claim 1, characterized in that: The lifting assembly includes a lifting frame (204), which is threaded onto the outer wall of the first lead screw (203). A second sliding groove (205) is provided at the upper center of the front end face of the lifting frame (204), and a second servo motor (206) is provided at the front center of the upper end face of the lifting frame (204).

3. The plastic bottle processing tail-cutting device according to claim 2, characterized in that: The output end of the second servo motor (206) passes through the upper surface of the lifting frame (204) and the upper surface of the second slide groove (205) to the inside of the second slide groove (205), and the end is fixedly connected to the second lead screw (207). The tail-cutting assembly includes a slider (208), the slider (208) is threaded on the outer wall of the second lead screw (207), and a third servo motor (209) is provided at the lower center of the front inner wall of the slider (208).

4. The plastic bottle processing tail-cutting device according to claim 3, characterized in that: The output end of the third servo motor (209) passes through the inner wall of the slider (208) and extends to the front end face of the slider (208), and a cutting blade (210) is fixedly connected to the end. A fixing piece (211) is threadedly rotatably connected to the center of the front end face of the cutting blade (210).

5. The plastic bottle processing tail-cutting device according to claim 1, characterized in that: The clamping structure (3) includes a third slide groove (301), which is located at the center of the upper end face of the base (1). A connecting block (302) is provided at the center of the third slide groove (301), and a fourth servo motor (303) is provided at the upper center of one side wall of the base (1).

6. The plastic bottle processing tail-cutting device according to claim 5, characterized in that: The output end of the fourth servo motor (303) passes through one side wall of the base (1) and one side wall of the third slide groove (301) to the inside of the third slide groove (301), and the end is fixedly connected to the third lead screw (304). One end of the third lead screw (304) passes through one side wall of the connecting block (302) to the other side wall of the connecting block (302), and the end is fixedly connected to the fourth lead screw (305).

7. A plastic bottle processing tail-cutting device according to claim 6, characterized in that: The third lead screw (304) and the fourth lead screw (305) are connected by opposite threads. The outer walls of the third lead screw (304) and the fourth lead screw (305) are threaded with clamping plates (306). Each of the two clamping plates (306) has a sliding plate (307) at the upper center of one side wall. Each of the two sliding plates (307) has multiple buffer columns (308) arranged in a rectangle at the center of one side wall.

8. The plastic bottle processing tail-cutting device according to claim 7, characterized in that: Compression springs (309) are fitted on the outer walls of the multiple buffer columns (308), and rubber clamping pads (310) are provided at the center of one side wall of the multiple buffer columns (308). The two sliding plates (307) are slidably connected to the upper surfaces of the two clamping plates (306).

9. A plastic bottle processing tail-cutting device according to claim 1, characterized in that: The two suction structures (4) include two suction pumps (401). The two suction pumps (401) are respectively located on the front side of the upper end face of the base (1). The output end of the two suction pumps (401) is provided with suction pipes (402). The two suction pipes (402) are inclined and their ends are located on the upper end face of the clamping structure (3). The waste box (403) is slidably connected to the front center of the base (1).

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