Automatic processing equipment and preparation process of polyethylene pesticide bottle blank

Abstract

The invention relates to the technical field of bottle blank production, in particular to automatic processing equipment for polyethylene pesticide bottle blanks, which comprises processing equipment and is used for detecting and processing the bottle blanks, a feeding conveyor and a discharging conveyor are respectively arranged at the front end and the right end of the processing equipment, and the processing equipment comprises a main body mechanism, a conveying mechanism and a conveying mechanism, a reversing assembly is arranged at the upper end of the platen and used for conveying reversing. The detection mechanism comprises a frame body arranged at the left end of the feeding conveyor, and an execution assembly is arranged on the frame body and used for detecting the sealing performance of the conveyed bottle blanks; the removing mechanism is arranged on the bedplate and is used for removing detected defective products; potential quality problems can be recognized in the early stage of a production line through sealing performance detection, reworking or scrapping caused by poor sealing of the bottle blanks in the follow-up machining process is avoided, and it can be ensured that the follow-up machined plastic bottles have reliable sealing performance by removing the bottle blanks with poor sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of bottle preform production, in particular to automated processing equipment and a preparation process for polyethylene pesticide bottle preforms. Background Art

[0002] Polyethylene pesticide bottle is a pesticide packaging container made of polyethylene material. It has excellent chemical stability and physical and mechanical properties, can withstand a variety of pesticide components, and ensure the safety and stability of pesticides during storage and transportation.

[0003] Publication number CN109591246B discloses an automated production line and process for PET plastic bottle preforms. This technology discloses "an automated production line and process for PET plastic bottle preforms, comprising a raw material hopper, a dryer, an injection molding machine, a preform sorting machine, a self-inspection machine, and a preform hopper arranged in sequence. The transmission device between the preform sorting machine and the self-inspection machine is a preform conveying device. The self-inspection machine comprises a first detection unit, a second detection unit, a rejection unit, and a controller that controls the three units. The process for PET plastic bottle preforms comprises the following steps: S1, material preparation; S2, molding; S3, sorting; S4, self-inspection; S5, boxing and processing." This technology has the following technical effects: "effectively improving the automation level of the preform production line, improving the production efficiency of preform products, making the entire process more stable, and improving the yield rate of preforms."

[0004] In the aforementioned automated production line for plastic preforms, the preform conveyor is limited to visual inspection of the preforms. However, this inspection method primarily focuses on cosmetic defects such as cracks, stains, and deformation, but fails to examine the sealing properties of the preforms. Consequently, preforms with sealing defects can cause accidental gas or liquid leakage during subsequent processing into plastic bottles, impairing product performance and posing a safety hazard. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an automated processing equipment and preparation process for polyethylene pesticide bottle preforms. The sealing performance test can identify potential quality problems in the early stages of the production line, avoiding rework or scrapping due to poor sealing of bottle preforms in subsequent processing flows. By eliminating bottle preforms with poor sealing, it can be ensured that the plastic bottles processed subsequently have reliable sealing performance, thereby effectively preventing liquid leakage.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automated processing equipment for polyethylene pesticide bottle preforms, including a processing device and used for inspecting and processing the bottle preforms, wherein a feed conveyor and a discharge conveyor are respectively provided at the front end and the right end of the processing equipment, and the processing equipment includes:

[0007] The main body includes a table fixed on the top of the main frame, and a reversing component is provided on the upper end of the table for conveying and reversing;

[0008] The detection mechanism includes a frame arranged at the left end of the feed conveyor, the frame is provided with an actuator and is used to perform a sealing detection on the bottle blanks being conveyed;

[0009] The rejection mechanism is installed on the table and is used to reject defective products after inspection.

[0010] Preferably, the actuator includes an extension plate fixed to the right side of the upper end of the frame, a standard cylinder is installed on the upper end of the extension plate, a mounting bracket is fixed to the output end of the standard cylinder, joints are fixed at both ends of the mounting bracket and are connected to the air supply equipment in the frame through an air pipe, and an air head is fixed at the lower end of the joint.

[0011] Preferably, the reversing assembly includes a main shaft rotatably mounted on the upper end of the table, a lower disc frame is fixed to the lower end of the outer wall of the main shaft, four circumferentially distributed bottle body limiting grooves are fixed to the outer edge of the lower disc frame, an upper disc frame is fixed to the upper end of the outer wall of the main shaft, four circumferentially distributed bottle mouth limiting grooves are opened on the outer edge of the upper disc frame, and a driving member is provided on the table for driving the main shaft to rotate.

[0012] Preferably, the rejection mechanism includes a stand fixed to the left end of the top of the table, a linear guide rail is fixed to the upper end of the stand, a first double-axis cylinder is installed on the slider of the linear guide rail, a second double-axis cylinder is fixed to the output end of the first double-axis cylinder, and a picking component is provided at the output end of the second double-axis cylinder and is used to pick up defective products.

[0013] Preferably, the picking assembly includes a frame fixed to the output end of the second dual-axis cylinder, two gears rotatably installed inside the frame and meshing with each other for transmission, an extension frame is fixed to the outer wall of the gear, a chuck is pivotally connected to the lower end of the extension frame, two parallel frames are rotatably installed at the lower end of the frame and meshing with the chuck for transmission, and a servo motor is installed on the outer wall of the frame and is used to drive the gear to rotate.

[0014] Preferably, the main body mechanism further includes a slope fixed to the front end of the top of the platform, and a notch is provided at the right end of the platform.

[0015] Preferably, the actuator further comprises a rubber ring fixed to the lower end inside the gas head.

[0016] The present invention also discloses a process for preparing a polyethylene pesticide bottle blank, comprising the following steps:

[0017] S1, Material selection: Select polyethylene material and required additives based on the properties and usage requirements of the pesticide;

[0018] S2, injection molding: the raw material pellets are added to the injection molding machine, heated to melt into a liquid state, and the molten plastic is injected into the mold cavity using the pressure of the injection molding machine to form the initial bottle preform shape, and then the preform is quickly cooled by the cooling system in the mold;

[0019] S3, demoulding and taking out: After the preform is cooled and shaped, the mold is opened, the formed preform is taken out, and the preform is placed on the feeding conveyor through the loading device;

[0020] S4, inspection and processing: The bottle blanks conveyed on the feeding conveyor are inspected for sealing by the inspection mechanism. The qualified bottle blanks are diverted to the discharging conveyor by the main mechanism and then conveyed to the next process. The unqualified bottle blanks are rejected by the rejection mechanism.

[0021] The present invention provides an automated processing device and preparation process for polyethylene pesticide bottle preforms. Compared with the existing technology, it has the following advantages:

[0022] 1. Sealing performance testing can identify potential quality problems in the early stages of the production line, avoiding rework or scrapping due to poor sealing of bottle preforms in subsequent processing. By eliminating bottle preforms with poor sealing, it can ensure that the plastic bottles processed subsequently have reliable sealing performance, thereby effectively preventing liquid leakage, promoting the improvement of the intelligence and automation level of the production line, and achieving more efficient and precise production control.

[0023] 2. After the preforms transported from the feed conveyor enter the reversing assembly, the bottle body and bottle mouth are positioned respectively by the bottle body limit groove and the bottle mouth limit groove. The qualified preforms are rotated 90 degrees counterclockwise by the reversing assembly and sent to the discharge conveyor for transportation to the next process. The unqualified preforms are rotated 90 degrees clockwise by the reversing assembly and are rejected by the reversing assembly.

[0024] 3. After the picking assembly clamps the unqualified bottle blank, the output end of the first double-axis cylinder drives the picking assembly on the second double-axis cylinder to move downward, and the bottle mouth of the bottle blank is clamped and fixed by the picking assembly. Then the output end of the second double-axis cylinder contracts to drive the bottle blank clamped on the picking assembly to separate from the reversing assembly. Then, the linear guide rail drives the first double-axis cylinder to cooperate with the second double-axis cylinder to drive the bottle blank clamped and fixed on the picking assembly to be transported backward. A collection box can be placed behind the main frame, and the picking assembly can release the fixation of the bottle blank, so that the bottle blank falls into the collection box below, so that the unqualified bottle blanks can be collected and processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a structural diagram of the main mechanism of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the reversing component in the present invention;

[0028] Figure 4 Schematic diagram of the structure of the rejection mechanism in the present invention;

[0029] Figure 5 It is a structural diagram of the execution component in the present invention;

[0030] Figure 6 It is a structural schematic diagram of the picking component in the present invention.

[0031] In the figure: 1. Processing equipment; 11. Main mechanism; 111. Main frame; 112. Platen; 113. Reversing assembly; 1131. Spindle; 1132. Lower plate frame; 1133. Bottle body limiting groove; 1134. Upper plate frame; 1135. Bottle mouth limiting groove; 1136. Driving member; 114. Slope; 115. Notch; 12. Detection mechanism; 121. Frame; 122. Actuator assembly; 1221. Extension plate; 1222. Standard cylinder; 1 223. Mounting frame; 1224. Connector; 1225. Air head; 1226. Rubber ring; 13. Rejection mechanism; 131. Vertical frame; 132. Linear guide; 133. First double-axis cylinder; 134. Second double-axis cylinder; 135. Pick-up assembly; 1351. Shell frame; 1352. Gear; 1353. Extension frame; 1354. Chuck; 1355. Parallel frame; 1356. Servo motor; 2. Feed conveyor; 3. Discharge conveyor. DETAILED DESCRIPTION

[0032] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] See also Figure 1 - Figure 6 The present invention provides a technical solution: an automated processing device for polyethylene pesticide preforms, comprising a processing device 1 for inspecting and processing the preforms, wherein a feed conveyor 2 and a discharge conveyor 3 are respectively provided at the front and right ends of the processing device 1, and the processing device 1 comprises:

[0034] The main body 11 includes a table 112 fixed on the top of the main frame 111. The upper end of the table 112 is provided with a reversing assembly 113 for conveying and reversing;

[0035] The detection mechanism 12 includes a frame 121 provided at the left end of the feed conveyor 2, and an actuator 122 is provided on the frame 121 for detecting the sealing of the preforms being conveyed;

[0036] The rejecting mechanism 13 is disposed on the platen 112 and is used to reject defective products after inspection.

[0037] In this embodiment, sealing performance testing can identify potential quality problems in the early stages of the production line, avoiding rework or scrapping due to poor sealing of bottle blanks in subsequent processing. By eliminating bottle blanks with poor sealing, it can be ensured that the plastic bottles processed subsequently have reliable sealing performance, thereby effectively preventing liquid leakage, promoting the improvement of the intelligence and automation level of the production line, and achieving more efficient and precise production control.

[0038] Specifically, the actuator 122 includes an extension plate 1221 fixed to the right side of the upper end of the frame 121, a standard cylinder 1222 is installed on the upper end of the extension plate 1221, a mounting bracket 1223 is fixed to the output end of the standard cylinder 1222, and connectors 1224 are fixed at both ends of the mounting bracket 1223 and are connected to the air supply equipment in the frame 121 through an air pipe, and an air head 1225 is fixed to the lower end of the connector 1224.

[0039] In this embodiment, the bottle blanks are conveyed by the feed conveyor 2. When the bottle blanks are conveyed to the bottom of the actuator 122, the output end of the standard cylinder 1222 drives the mounting frame 1223 to move downward. The mounting frame 1223 drives the air head 1225 on the joint 1224 to cover the bottle mouth of the bottle blank, and starts the air supply device in the frame 121. The gas is injected into the bottle blank from the air head 1225 on the joint 1224 through the hose to realize the sealing detection of the bottle blank.

[0040] Specifically, the reversing assembly 113 includes a main shaft 1131 rotatably mounted on the upper end of the table 112, a lower disc frame 1132 is fixed to the lower end of the outer wall of the main shaft 1131, and four circumferentially distributed bottle body limiting grooves 1133 are fixed to the outer edge of the lower disc frame 1132, an upper disc frame 1134 is fixed to the upper end of the outer wall of the main shaft 1131, and four circumferentially distributed bottle mouth limiting grooves 1135 are opened on the outer edge of the upper disc frame 1134, and a driving member 1136 is provided on the table 112 and is used to drive the main shaft 1131 to rotate.

[0041] In this embodiment, after the bottle blanks conveyed by the feed conveyor 2 enter the reversing assembly 113, the bottle body and the bottle mouth are positioned respectively by the bottle body limiting groove 1133 and the bottle mouth limiting groove 1135. The qualified bottle blanks are rotated counterclockwise by 90 degrees by the reversing assembly 113 and sent to the discharge conveyor 3 for transportation to the next process. The unqualified bottle blanks are rotated clockwise by 90 degrees by the reversing assembly 113 and are rejected by the reversing assembly 113.

[0042] Specifically, the rejection mechanism 13 includes a stand 131 fixed to the top left end of the table 112, a linear guide 132 is fixed to the upper end of the stand 131, a first dual-axis cylinder 133 is installed on the slider of the linear guide 132, a second dual-axis cylinder 134 is fixed to the output end of the first dual-axis cylinder 133, and a picking component 135 is provided at the output end of the second dual-axis cylinder 134 for picking up defective products.

[0043] In this embodiment, after the picking assembly 135 clamps the unqualified bottle blank, the output end of the first double-axis cylinder 133 drives the picking assembly 135 on the second double-axis cylinder 134 to move downward, and the bottle mouth of the bottle blank is clamped and fixed by the picking assembly 135, and then the output end of the second double-axis cylinder 134 contracts to drive the bottle blank clamped on the picking assembly 135 to separate from the reversing assembly 113, and then the linear guide rail 132 drives the first double-axis cylinder 133 to cooperate with the second double-axis cylinder 134 to drive the bottle blank clamped and fixed on the picking assembly 135 to be transported backward. A collection box can be placed behind the main frame 111, and the picking assembly 135 can release the fixation of the bottle blank, so that the bottle blank falls into the collection box below, thereby realizing the collection and processing of the unqualified bottle blanks.

[0044] Specifically, the picking assembly 135 includes a frame 1351 fixed to the output end of the second dual-axis cylinder 134, two gears 1352 are rotatably installed inside the frame 1351 and mesh with each other for transmission, an extension frame 1353 is fixed to the outer wall of the gear 1352, and a clamp 1354 is pivotally connected to the lower end of the extension frame 1353, two parallel frames 1355 are rotatably installed at the lower end of the frame 1351 and the lower end is meshed with the clamp 1354 for transmission, and a servo motor 1356 is installed on the outer wall of the frame 1351 and is used to drive the gear 1352 to rotate.

[0045] In this embodiment, one of the gears 1352 is driven to rotate by the output end of the servo motor 1356, and at the same time, the gear 1352 drives the other gear 1352 to rotate synchronously in the opposite direction, so that the gear 1352 drives the clamp 1354 to remain horizontal during the movement through the extension frame 1353 and the parallel frame 1355, so that the two clamps 1354 can clamp the bottle mouth of the bottle blank.

[0046] Specifically, the main body mechanism 11 further includes a slope 114 fixed to the front end of the top of the platform 112 , and a notch 115 is formed at the right end of the platform 112 .

[0047] In this embodiment, the preforms in the infeed conveyor 2 can smoothly enter the reversing assembly 113 through the ramp 114 , and the preforms in the reversing assembly 113 can smoothly enter the outfeed conveyor 3 through the notch 115 .

[0048] Specifically, the actuator 122 further includes a rubber ring 1226 fixed to the lower end of the gas head 1225 .

[0049] In this embodiment, the rubber ring 1226 can improve the sealing performance when the gas head 1225 contacts the bottle mouth of the bottle blank, thereby preventing leakage during gas injection and affecting the detection of airtightness.

[0050] The present invention also discloses a process for preparing a polyethylene pesticide bottle blank, comprising the following steps:

[0051] S1, Material selection: Select polyethylene material and required additives based on the properties and usage requirements of the pesticide;

[0052] S2, injection molding: the raw material pellets are added to the injection molding machine, heated to melt into a liquid state, and the molten plastic is injected into the mold cavity using the pressure of the injection molding machine to form the initial bottle preform shape, and then the preform is quickly cooled by the cooling system in the mold;

[0053] S3, demoulding and taking out: After the preform is cooled and shaped, the mold is opened, the formed preform is taken out, and the preform is placed on the feeding conveyor 2 through the loading device;

[0054] S4, inspection and processing: The bottle blanks conveyed on the feeding conveyor 2 are inspected for sealing by the inspection mechanism 12. The qualified bottle blanks are diverted to the discharging conveyor 3 by the main mechanism 11 and then conveyed to the next process. The unqualified bottle blanks are rejected by the rejection mechanism 13.

[0055] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated processing equipment for polyethylene pesticide preforms, characterized in that: The invention comprises a processing device (1) and is used for inspecting and processing bottle blanks. The front end and the right end of the processing device (1) are respectively provided with a feeding conveyor (2) and a discharging conveyor (3). The processing device (1) comprises: The main body mechanism (11) comprises a table plate (112) fixed on the top of the main frame (111), and a reversing assembly (113) is arranged on the upper end of the table plate (112) and is used for conveying and reversing; The detection mechanism (12) comprises a frame (121) arranged at the left end of the feeding conveyor (2), and an execution component (122) is arranged on the frame (121) and is used to perform sealing detection on the bottle blanks being conveyed; The rejecting mechanism (13) is arranged on the table (112) and is used to reject defective products after detection.

2. The automated processing equipment for polyethylene pesticide preforms according to claim 1, characterized in that: The actuator assembly (122) comprises an extension plate (1221) fixed to the right side of the upper end of the frame (121); a standard cylinder (1222) is installed on the upper end of the extension plate (1221); a mounting frame (1223) is fixed to the output end of the standard cylinder (1222); joints (1224) are fixed at both ends of the mounting frame (1223) and are connected to the air supply device in the frame (121) through an air pipe; and an air head (1225) is fixed to the lower end of the joint (1224).

3. The automated processing equipment for polyethylene pesticide preforms according to claim 1, characterized in that: The reversing assembly (113) comprises a main shaft (1131) rotatably mounted on the upper end of a platform (112); a lower disc frame (1132) is fixed to the lower end of an outer wall of the main shaft (1131); four circumferentially distributed bottle body limiting grooves (1133) are fixed to the outer edge of the lower disc frame (1132); an upper disc frame (1134) is fixed to the upper end of an outer wall of the main shaft (1131); four circumferentially distributed bottle mouth limiting grooves (1135) are provided on the outer edge of the upper disc frame (1134); and a driving member (1136) is arranged on the platform (112) and is used to drive the main shaft (1131) to rotate.

4. The automated processing equipment for polyethylene pesticide preforms according to claim 1, characterized in that: The rejection mechanism (13) comprises a stand (131) fixed on the top left end of the table (112); a linear guide rail (132) is fixed on the upper end of the stand (131); a first double-axis cylinder (133) is installed on the slider of the linear guide rail (132); a second double-axis cylinder (134) is fixed on the output end of the first double-axis cylinder (133); a picking component (135) is provided at the output end of the second double-axis cylinder (134) and is used to pick up defective products.

5. The automated processing equipment for polyethylene pesticide preforms according to claim 4, characterized in that: The pickup assembly (135) includes a frame (1351) fixed at the output end of the second dual-axis cylinder (134), two gears (1352) rotatably mounted inside the frame (1351) and meshing with each other for transmission, an extension frame (1353) is fixed to the outer wall of the gear (1352), a chuck (1354) is pivotally connected to the lower end of the extension frame (1353), two parallel frames (1355) are rotatably mounted at the lower end of the frame (1351) and meshing with the chuck (1354) for transmission, and a servo motor (1356) is mounted on the outer wall of the frame (1351) and is used to drive the gear (1352) to rotate.

6. The automated processing equipment for polyethylene pesticide preforms according to claim 1, characterized in that: The main body mechanism (11) further comprises a slope (114) fixed to the front end of the top of the platform (112), and a notch (115) is provided at the right end of the platform (112).

7. The automated processing equipment for polyethylene pesticide preforms according to claim 2, characterized in that: The actuator assembly (122) further comprises a rubber ring (1226) fixed at the lower end inside the gas head (1225).

8. A process for preparing a polyethylene pesticide bottle blank according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, material selection: select polyethylene material and required additives according to the properties and usage requirements of the pesticide; S2, injection molding: the raw material particles are added into the injection molding machine, heated to melt them into liquid form, and the molten plastic is injected into the mold cavity by the pressure of the injection molding machine to form a preliminary preform shape, and then the preform is quickly cooled by the cooling system in the mold; S3, demoulding and taking out: after the preform is cooled and shaped, the mold is opened, the formed preform is taken out, and the preform is placed on the feeding conveyor (2) through the loading device; S4, inspection and processing: the bottle blanks conveyed on the feeding conveyor (2) are inspected for sealing properties by the inspection mechanism (12). Qualified bottle blanks are transferred to the discharging conveyor (3) by the main mechanism (11) and then conveyed to the next process. Unqualified bottle blanks are rejected by the rejection mechanism (13).

Images