Cutting device for PLA suction pipe processing

Abstract

The utility model relates to the technical field of plastic straw processing equipment, in particular to a cutting device for PLA straw processing, which comprises a workbench and conveying mechanisms, the conveying mechanisms are arranged at two ends above the workbench, a limiting mechanism is arranged between the two conveying mechanisms, a cutting mechanism is arranged on one side of the limiting mechanism, and the cutting mechanism is arranged on the other side of the limiting mechanism. The workbench comprises a bearing plate and a mounting block, the conveying mechanism comprises a first support, a first telescopic rod, a limiting roller, a power roller and a servo motor, the limiting mechanism comprises a second support, a second telescopic rod and a limiting rod, and the cutting mechanism comprises a third support, a third telescopic rod, a cutter and a cutter groove. In the cutting process, the straw can be supported, the position of the straw can be limited, flatness of a notch is guaranteed, deformation of the straw in the conveying, discharging and cutting processes can be avoided, the quality of the straw is guaranteed, and straw loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic straw processing equipment, and specifically discloses a cutting device for processing PLA straws. Background Art

[0002] PLA straws are made of polylactic acid, an environmentally friendly and degradable straw alternative. PLA is a bio-based degradable plastic synthesized from natural substances such as plant starch through chemical reactions. It has good biocompatibility and degradability and will not pollute the environment. In the process of PLA straw processing, straw processing cutting equipment is usually used to cut the produced PLA straws into the required length to meet different usage requirements.

[0003] The Chinese patent with patent number CN215433804U3 discloses a cutting and unloading device for plastic straws, including a workbench, the upper side of the workbench is fixedly connected to a square plate, one side of the square plate is fixedly connected to a motor bracket 1, the upper side of the motor bracket 1 is fixedly connected to a motor 1, the output shaft of the motor 1 passes through the square plate, the end of the output shaft of the motor 1 is fixedly connected to one end of a circular shaft, the upper side of the workbench is fixedly connected to a vertical plate of an L-shaped plate, the horizontal plate of the L-shaped plate is fixedly connected to one end of a cross slot, the other end of the cross slot is fixedly connected to the workbench, one side of the vertical plate of the L-shaped plate is fixedly connected to a motor bracket 2, and the motor bracket 2 is fixedly connected to a cutting mechanism, which is conducive to realizing plastic Cutting and blanking of straws, but the above-mentioned cutting and blanking device, during use, places the straws under the circular axis, which can easily cause the straws to be squeezed and deformed, affecting the quality of the straws. The above-mentioned cutting and blanking device does not have the function of automatic feeding, resulting in the need for manual feeding or the use of additional feeding equipment when the device is in use, which affects the degree of automation of the device and is not conducive to saving labor costs. In addition, the above-mentioned cutting and blanking device cannot limit the straws and provide support for the straws during the process of cutting the straws, which increases the risk of deformation of the straws during the cutting process and is likely to affect the flatness of the incision. Therefore, in order to solve the above-mentioned problems, the utility model proposes a cutting device for PLA straw processing. Utility Model Content

[0004] The utility model aims to provide a cutting device for processing PLA straws, which has the functions of automatic feeding and unloading, can provide support for the straws and limit the position of the straws during the cutting process to ensure the smoothness of the incision, can avoid deformation of the straws during the feeding, unloading and cutting processes, ensure the quality of the straws, and reduce straw losses.

[0005] The utility model is realized by the following technical solutions:

[0006] A cutting device for processing PLA straws, comprising a workbench and a feeding mechanism, wherein feeding mechanisms are provided at both ends of the upper side of the workbench, a limiting mechanism is provided between the two feeding mechanisms, a cutting mechanism is provided on one side of the limiting mechanism, the workbench comprises a bearing plate and a mounting block, the feeding mechanism comprises a first bracket, a first telescopic rod, a limiting roller, a power roller and a servo motor, two first telescopic rods are connected to the top of the first bracket, the telescopic end of the first telescopic rod is connected to a first mounting frame, the inner side of the first mounting frame is detachably connected to the limiting roller, a side of the limiting roller away from the first mounting frame is provided with a plurality of first semicircular grooves, a power roller is provided below the limiting roller, a plurality of roller grooves corresponding to the vertical positions of the first semicircular grooves are provided inside the power roller, the cross section of the roller groove is semicircular, both ends of the power roller are rotatably connected to a first support seat, one end of the power roller is connected to a servo motor, the limiting mechanism comprises a second bracket, a second telescopic rod and a limiting rod, and the cutting mechanism comprises a third bracket, a third telescopic rod, a cutting knife and a knife groove.

[0007] As a further arrangement of the above scheme, two mounting blocks are symmetrically arranged on both sides above the supporting plate, an embedded scale bar is arranged on the upper end of the mounting block, a long hole is arranged inside the mounting block, and a controller is arranged on one side above the supporting plate. The above design facilitates installation and accurately adjusts the position of the cutting mechanism according to cutting requirements, and is convenient for controlling the operation of related components in the device.

[0008] As a further configuration of the above scheme, two first telescopic rods are connected to the top of the first bracket, and the telescopic end of the first telescopic rod is connected to the first mounting frame, and the inner side of the first mounting frame is detachably connected to a limit roller, and a plurality of first semicircular grooves are provided on the side of the limit roller away from the first mounting frame, and a power roller is provided below the limit roller, and a plurality of roller grooves corresponding to the vertical positions of the first semicircular grooves are provided inside the power roller, and the cross-section of the roller groove is semicircular, and both ends of the power roller are rotatably connected to the first support seat, and one end of the power roller is connected to a servo motor. The above design facilitates the passage of the PLA straw through the gap between the first semicircular groove and the roller groove before cutting, and can adjust the distance between the limit roller and the power roller according to the diameter of the PLA straw to ensure that the feeding mechanism can smoothly transport the PLA straw.

[0009] As a further configuration of the above scheme, two second telescopic rods are provided on the top of the second bracket, the telescopic ends of the two second telescopic rods are connected to the second mounting bracket, the lower end of the second mounting bracket is connected to the first limiting rod, a second limiting rod is provided below the first limiting rod, both ends of the second limiting rod are fixedly connected to the second support seat, and a second semicircular groove is provided on the opposite side of the first limiting rod and the second limiting rod. The above design can provide support for the PLA straw before and after cutting, limit the position of the PLA straw, and clamp the straw during the cutting process to ensure the flatness of the cut surface.

[0010] As a further arrangement of the above scheme, countersunk holes are provided at both ends of the lower side of the third bracket, bolts are provided through the inside of the countersunk holes, the bolts pass through the inside of the long hole, threaded holes are provided on both sides of the countersunk holes, threaded rods are connected to the internal threads of the threaded holes, and the top of the bracket is connected to the third telescopic rod. The above design facilitates the connection between the cutting mechanism and the mounting block, and is convenient for adjusting the position of the cutting mechanism and fixing it.

[0011] As a further configuration of the above scheme, the telescopic end of the third telescopic rod is connected to a cutter, a knife groove is provided below the cutter, third semicircular grooves are provided on both sides of the knife groove, limiting blocks are provided at both ends above the cutter, limiting holes are provided at both ends of the knife groove, the limiting blocks pass through the interior of the limiting holes and are slidably connected to the limiting holes. The above design can further limit the PLA straw, facilitate the cutting of the PLA straw, and can keep the cutter in an up and down motion state at all times, thereby ensuring the quality and efficiency of cutting.

[0012] As a further configuration of the above scheme, PLA straws are commonly arranged on the inner sides of the roller groove, the second semicircular groove and the third semicircular groove. The above design can ensure that the PLA straws can smoothly pass through the feeding mechanism, the limiting mechanism and the cutting mechanism, thereby ensuring smooth feeding, cutting and unloading, and improving the degree of automation of the device.

[0013] The first telescopic rod, the second telescopic rod and the third telescopic rod involved in the utility model are all servo telescopic rods. Beneficial Effects

[0014] During use, the utility model has two feeding mechanisms designed to realize automatic loading and unloading of PLA straws before and after cutting, thereby improving the automation degree of the device; the combination of the first semicircular groove and the roller groove can avoid squeezing the straws to cause deformation of the straws during feeding and unloading; the combination of the two second semicircular grooves can limit the position of the straws, and clamp and fix the straws together with the feeding mechanism on the other side of the cutting mechanism during the cutting process, thereby providing convenience for the cutter to cut the straws, thereby avoiding the position of the straws from shifting during the cutting process and ensuring the smoothness of the incision; the combination of the mounting block and the scale bar facilitates the installation of the cutting mechanism and the adjustment of the position of the cutting mechanism according to the cutting requirements; the combination of the bolt and the threaded rod can fix the cutting mechanism after its position is adjusted, thereby ensuring smooth cutting of the straws; the combination of the limit block and the limit hole can limit the running track of the cutter, maintain the vertical corresponding state of the cutter and the knife groove, thereby ensuring the quality and efficiency of the cutter in cutting the straws. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a perspective view of the utility model;

[0017] Figure 2 It is a perspective view of the workbench in the utility model;

[0018] Figure 3 It is a perspective view of the feeding mechanism in the utility model;

[0019] Figure 4 It is a front view of the feeding mechanism in the utility model;

[0020] Figure 5 It is a perspective view of the limiting roller in the utility model;

[0021] Figure 6 It is a perspective view of the limiting mechanism in the utility model;

[0022] Figure 7 It is a perspective view of the cutting mechanism in the present invention.

[0023] In the figure: 1, workbench; 2, feeding mechanism; 3, limiting mechanism; 4, cutting mechanism; 5, PLA straw; 6, controller; 11, carrying plate; 12, mounting block; 13, scale bar; 14, long hole; 21, first bracket; 22, first telescopic rod; 23, first mounting frame; 24, limiting roller; 241, first semicircular groove; 25, power roller; 251, roller groove; 26, first support seat; 27, servo motor; 31 , second bracket; 32, second telescopic rod; 33, second mounting bracket; 34, first limiting rod; 35, second limiting rod; 351, second semicircular groove; 36, second supporting seat; 41, third bracket; 411, countersunk hole; 412, bolt; 413, threaded hole; 414, threaded rod; 42, third telescopic rod; 43, cutter; 431, limiting block; 44, knife groove; 441, third semicircular groove; 442, limiting hole. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 7 , and describes the application in detail with reference to embodiments.

[0026] The embodiment discloses a cutting device for processing PLA straws, comprising a workbench 1 and a feeding mechanism 2, wherein the feeding mechanisms 2 are arranged at both ends of the upper side of the workbench 1, a limiting mechanism 3 is arranged between the two feeding mechanisms 2, and a cutting mechanism 4 is arranged on one side of the limiting mechanism 3, the workbench 1 comprises a bearing plate 11 and a mounting block 12, the feeding mechanism 2 comprises a first bracket 21, a first telescopic rod 22, a limiting roller 24, a power roller 25 and a servo motor 27, the top of the first bracket 21 is connected to two first telescopic rods 22, the telescopic end of the first telescopic rod 22 is connected to a first mounting frame 23, the inner side of the first mounting frame 23 is detachably connected to the first telescopic rod 22, and the first telescopic rod 22 is connected to the first mounting frame 23. A limiting roller 24 is connected, and a plurality of first semicircular grooves 241 are provided on the side of the limiting roller 24 away from the first mounting frame 23. A power roller 25 is provided below the limiting roller 24. A plurality of roller grooves 251 corresponding to the vertical positions of the first semicircular grooves 241 are provided inside the power roller 25, and the cross-section of the roller groove 251 is semicircular. Both ends of the power roller 25 are rotatably connected to the first support seat 26, and one end of the power roller 25 is connected to the servo motor 27. The limiting mechanism 3 includes a second bracket 31, a second telescopic rod 32 and a limiting rod, and the cutting mechanism 4 includes a third bracket 41, a third telescopic rod 42, a cutting knife 43 and a knife groove 44.

[0027] like Figure 1 and Figure 2 As shown, two mounting blocks 12 are symmetrically arranged on both sides above the carrier plate 11, an embedded scale bar 13 is arranged on the upper end of the mounting block 12, a long hole 14 is arranged inside the mounting block 12, and a controller 6 is arranged on one side above the carrier plate 11, which is convenient for installation and accurate adjustment of the position of the cutting mechanism 4 according to the cutting requirements, and is convenient for controlling the operation of related components in the device.

[0028] like Figure 1 and Figure 6 As shown, two second telescopic rods 32 are provided on the top of the second bracket 31, and the telescopic ends of the two second telescopic rods 32 are connected to the second mounting bracket 33, and the lower end of the second mounting bracket 33 is connected to the first limiting rod 34, and a second limiting rod 35 is provided below the first limiting rod 34, and both ends of the second limiting rod 35 are fixedly connected to the second supporting seat 36, and the first limiting rod 34 and the second limiting rod 35 are provided with a second semicircular groove 351 on the opposite side, which can provide support for the PLA straw 5 before and after cutting, limit the position of the PLA straw 5, and clamp the straw during the cutting process to ensure the flatness of the cut surface.

[0029] like Figure 1 and Figure 7As shown, countersunk holes 411 are provided at both ends of the lower side of the third bracket 41, and bolts 412 are provided inside the countersunk holes 411, and the bolts 412 pass through the inside of the long hole 14. Threaded holes 413 are provided on both sides of the countersunk holes 411, and the internal threads of the threaded holes 413 are connected to threaded rods 414. The top of the bracket is connected to the third telescopic rod 42, which is convenient for connecting the cutting mechanism 4 and the mounting block 12, and is convenient for adjusting the position of the cutting mechanism 4 and fixing it.

[0030] like Figure 1 and Figure 7 As shown, the telescopic end of the third telescopic rod 42 is connected with a cutter 43, a knife groove 44 is arranged below the cutter 43, third semicircular grooves 441 are arranged on both sides of the knife groove 44, limiting blocks 431 are arranged at both ends above the cutter 43, and limiting holes 442 are arranged at both ends of the knife groove 44. The limiting blocks 431 penetrate the interior of the limiting holes 442 and are slidably connected with the limiting holes 442, which can further limit the PLA straw 5, facilitate the cutting of the PLA straw 5, and enable the cutter 43 to always maintain an up and down movement state, thereby ensuring the quality and efficiency of cutting.

[0031] like Figure 1 As shown, the inner sides of the roller groove 251, the second semicircular groove 351 and the third semicircular groove 441 are jointly provided with a PLA straw 5, which can ensure that the PLA straw 5 can smoothly pass through the feeding mechanism 2, the limiting mechanism 3 and the cutting mechanism 4, ensure smooth feeding, cutting and unloading, and improve the degree of automation of the device.

[0032] The PLA straw processing cutting device disclosed in this embodiment is as follows: before use, the bolts 412 and the threaded rod 414 are loosened; after adjusting the cutting mechanism 4 to a suitable position with reference to the scale on the scale bar 13, the bolts 412 are tightened; the threaded rod 414 is rotated so that the end face of the threaded rod 414 is closely fitted with the mounting block 12, and the position of the cutting mechanism 4 is fixed; the two sets of first telescopic rods 22 are controlled to retract by the controller 6, so as to drive the first mounting frame 23 and the first limiting roller 24 to move upward, thereby increasing the distance between the first limiting roller 24 and the power roller 25; the two second telescopic rods 32 are controlled to retract by the controller 6, thereby increasing the distance between the first limiting rod 34 and the second limiting rod 35. The PLA straw 5 raw material to be cut is passed through the roller groove 251 and the first semicircular groove 241 in the feeding mechanism 2 far away from the cutting mechanism 4 in sequence, and then the straw head is passed through the second semicircular groove 351 and the third semicircular groove 441 in sequence until it passes through the other feeding mechanism 2. The two feeding mechanisms 2 are numbered in the controller 6, taking A and B as an example, where A represents the feeding mechanism 2 far away from the cutting mechanism 4, and B represents the feeding mechanism 2 close to the cutting mechanism 4. The controller 6 is used to control the two second telescopic rods 32 to extend, and the first limiting rod 34 is pushed downward to reduce the distance between the two second semicircular grooves 351, so that the two second telescopic rods 32 are closer to each other. The two semicircular grooves 351 clamp the straws, and the controller 6 is used to control the two first telescopic rods 22 in the B feeding mechanism 2 to extend, so that the first semicircular groove 241 and the roller groove 251 clamp the ends of the straws, and then the controller 6 is used to control the third telescopic rod 42 to extend, driving the cutter 43 to move downward to cut the straws. After the cutting is completed, the first telescopic rod 22, the second telescopic rod 32 and the third telescopic rod 42 are simultaneously retracted and reset. At this time, the servo motors 27 in the A and B feeding mechanisms 2 are simultaneously started, and the two power rollers 25 roll, driving the PLA straw 5 raw material and the cut PLA straw 5 to move to one end above the carrier plate 11 away from the A feeding mechanism 2, respectively completing the PLA feeding. The feeding and unloading operations of the LA straw 5 are as follows: when the end of the PLA straw 5 raw material is pushed into the B feeding mechanism 2 again, the servo motor 27 in the A feeding mechanism 2 is turned off, and then the telescopic operation of the first telescopic rod 22 in the B feeding mechanism 2, the second telescopic rod 32 in the limiting mechanism 3 and the third telescopic rod 42 in the cutting mechanism 4 is repeated to cut the PLA straw 5. The cut PLA straw 5 is unloaded through the B feeding mechanism 2. The operations of the above-mentioned telescopic rods and the two servo motors 27 are compiled into an operation combination in the controller 6. The automatic feeding, clamping, cutting and unloading operations of the PLA straw 5 can be realized by selecting the corresponding operation combination before use.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting device for processing PLA straws, comprising a workbench and a feeding mechanism, characterized in that: The working table is provided with feeding mechanisms at both ends above the working table, a limiting mechanism is provided between the two feeding mechanisms, a cutting mechanism is provided on one side of the limiting mechanism, the working table comprises a carrying plate and a mounting block, the feeding mechanism comprises a first bracket, a first telescopic rod, a limiting roller, a power roller and a servo motor, two first telescopic rods are connected to the top of the first bracket, the telescopic end of the first telescopic rod is connected to the first mounting frame, the inner side of the first mounting frame is detachably connected to the limiting roller, a side of the limiting roller away from the first mounting frame is provided with a plurality of first semicircular grooves, a power roller is provided below the limiting roller, a plurality of roller grooves corresponding to the vertical position of the first semicircular grooves are provided inside the power roller, the cross-section of the roller groove is semicircular, both ends of the power roller are rotatably connected to the first support seat, one end of the power roller is connected to the servo motor, the limiting mechanism comprises a second bracket, a second telescopic rod and a limiting rod, and the cutting mechanism comprises a third bracket, a third telescopic rod, a cutting knife and a knife groove.

2. A PLA straw cutting device according to claim 1, characterized in that: Two mounting blocks are symmetrically arranged on both sides above the carrier plate, an embedded scale bar is arranged on the upper end of the mounting block, a long hole is arranged inside the mounting block, and a controller is arranged on one side above the carrier plate.

3. A PLA straw cutting device according to claim 1, characterized in that: Two second telescopic rods are arranged on the top of the second bracket, the telescopic ends of the two second telescopic rods are connected to the second mounting bracket, the lower end of the second mounting bracket is connected to the first limiting rod, a second limiting rod is arranged below the first limiting rod, both ends of the second limiting rod are fixedly connected to the second support seat, and a second semicircular groove is arranged on the opposite side of the first limiting rod and the second limiting rod.

4. A cutting device for processing PLA straws according to claim 1, characterized in that: Countersunk holes are provided at both ends of the lower side of the third bracket, bolts are provided through the inside of the countersunk holes, the bolts pass through the inside of the long hole, threaded holes are provided on both sides of the countersunk holes, threaded rods are connected to the internal threads of the threaded holes, and the top of the bracket is connected to the third telescopic rod.

5. A cutting device for processing PLA straws according to claim 4, characterized in that: The telescopic end of the third telescopic rod is connected to a cutter, a cutter groove is provided below the cutter, third semicircular grooves are provided on both sides of the cutter groove, limiting blocks are provided at both ends above the cutter, limiting holes are provided at both ends of the cutter groove, and the limiting blocks penetrate the interior of the limiting hole and are slidably connected to the limiting hole.

6. A PLA straw cutting device according to claim 1, characterized in that: The inner sides of the roller groove, the second semicircular groove and the third semicircular groove are commonly provided with polylactic acid straws.

Images