Rapid positioning and detecting device for plastic pipe

Abstract

The invention provides a rapid positioning and detecting device for a plastic pipe, and relates to the technical field of pipe fitting detection. The device comprises a pipe clamping assembly, a sensor and a controller, the pipe clamping assembly comprises a fixing block, a limiting block, a telescopic column and a driving unit, a to-be-detected pipe is arranged between the fixing block and the limiting block in the length direction of the to-be-detected pipe, a feeding through hole is formed in the fixing block, to-be-loaded materials can penetrate through the feeding through hole to enter the pipe, a telescopic hole is formed in the limiting block, and the telescopic column is connected with the driving unit. The telescopic column is arranged in the telescopic hole, and the driving unit can drive the telescopic column to be away from the fixing block or close to the fixing block and clamp the pipe fitting with the fixing block. When the telescopic column and the fixing block clamp the pipe fitting, the sensor can detect the distance between the end, close to the fixing block, of the telescopic column and the limiting block, and the sensor can send a detection result to the controller. The controller can control an equipment switch used for loading materials into the pipe fitting on the material loading station according to the detection result. According to the device, the occupied mounting space at the pipe fitting feeding opening is small.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pipe detection, in particular to a plastic pipe rapid positioning and detection device. BACKGROUND

[0002] In a semiconductor automatic punching system, plastic pipes are often used as product loading and transfer carriers. In the production process, the plastic pipes need to be automatically replaced and accurately docked with the discharge port of the equipment.

[0003] Since the plastic pipe is a turnover consumable and its material is soft, it is easy to deform, damage and be short, which will cause a certain deviation in the length of the plastic pipe, and then cause the phenomena of material jamming and machine stop during the automatic pipe loading process, seriously affecting the equipment operation efficiency and product quality. The traditional solution is to add a detection device at the inlet of the plastic pipe, but because the inlet of the plastic pipe also needs to place the equipment for feeding and transferring, the installation space is limited, and the existing detection device relies heavily on precise visual detection components such as cameras, thereby bringing many difficulties to the layout of the production line.

[0004] Therefore, it is necessary to provide a plastic pipe rapid positioning and detection device. SUMMARY

[0005] In order to solve the problem that the existing detection device occupies a large installation space at the inlet of the plastic pipe, thereby bringing difficulties to the layout of the production line, the application provides a plastic pipe rapid positioning and detection device.

[0006] The plastic pipe rapid positioning and detection device provided by the application adopts the following technical scheme: a pipe clamping assembly, a sensor and a controller are included, the pipe clamping assembly includes a fixed block, a limiting block, an extension column and a driving unit, the pipe to be detected is arranged between the fixed block and the limiting block along the length direction of the pipe, an upper feeding through hole is formed on the fixed block along the length direction of the pipe, the material to be loaded can pass through the upper feeding through hole and enter the pipe, an extension hole is formed on the limiting block along the length direction of the pipe, the extension column is arranged in the extension hole, the driving unit is in transmission connection with the extension column and can drive the extension column to move away from the fixed block or move close to the fixed block and clamp the pipe with the fixed block; When the extension column and the fixed block clamp the pipe, the sensor can detect the distance between one end of the extension column close to the fixed block and the limiting block, and the sensor is electrically connected with the controller and can send the detection result to the controller; The controller can control the on-off of the equipment for loading the material into the pipe on the material loading station according to the detection result.

[0007] By adopting the technical scheme, the telescopic column of the pipe clamping assembly is matched with the fixed block to clamp the pipe, the sensor can detect the distance between the telescopic column and the limiting block and send the result to the controller, the controller controls the switch of the material loading equipment according to the detection result, the rapid positioning and detection of the pipe can be realized, it is ensured that only the pipe meeting the requirements is loaded with materials, and the conditions such as material jamming and shutdown caused by pipe defects are prevented. Moreover, most of the detection components of the device are arranged away from the pipe feeding port, compared with the traditional detection device which adds precise visual detection components such as cameras at the plastic pipe feeding port, the installation space of the feeding port is occupied, the problem that the existing detection device occupies a large amount of installation space and causes difficulties in production line arrangement is solved, and the production line is more reasonable.

[0008] Specifically, the sensor includes two pairs of photoelectric sensors, the telescopic column is located between the two pairs of photoelectric sensors, and a light transmission hole is formed on the telescopic column in the width direction of the pipe. When the telescopic column and the fixed block clamp the pipe and the pipe is defect-free, the light emitted by one of the two pairs of photoelectric sensors can pass through the light transmission hole and be received by the other one of the two pairs of photoelectric sensors.

[0009] By adopting the above technical scheme, the light transmission hole and the two pairs of photoelectric sensors are used, when the telescopic column and the fixed block clamp the defect-free pipe, the light can pass through the light transmission hole and be received by the other sensor, the detection of whether the pipe has defects is realized, accurate basis is provided for subsequent equipment control, the pipe with defects is prevented from entering the material loading link, and the equipment operation efficiency and product quality are ensured.

[0010] Further, the light transmission hole is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the pipe.

[0011] By adopting the above technical scheme, the light transmission hole is set as a waist-shaped hole with the length direction parallel to the length direction of the pipe, the range of the light emitted by one of the two pairs of photoelectric sensors passing through the light transmission hole and being received by the other one can be increased, and then the length range of the qualified pipe that can be recognized by the plastic pipe rapid positioning and detection device is expanded.

[0012] Specifically, the driving unit comprises a driving cylinder, a moving block and an elastic member, the moving block is provided with an accommodating groove, the telescopic hole penetrates through the limiting block along the length direction of the pipe, one end of the telescopic column away from the fixed block penetrates through the telescopic hole and is inserted into the accommodating groove and can slide along the accommodating groove, the driving cylinder is in transmission connection with the moving block and can drive the moving block to approach or move away from the fixed block, the elastic member is arranged between the telescopic column and the groove wall of the accommodating groove and can apply a force to the telescopic column to approach the fixed block, the groove wall of the accommodating groove is further provided with a positioning protrusion, the telescopic column is provided with a positioning groove on the column body, the positioning protrusion is inserted into the positioning groove and can slide along the positioning groove, and the positioning protrusion can abut against the groove wall away from the fixed block in the positioning groove and limit the end of the telescopic column away from the fixed block to move away from the accommodating groove.

[0013] By adopting the above technical scheme, the driving cylinder is in transmission connection with the moving block, the moving block can be driven to approach or move away from the fixed block, the position of the telescopic column is adjusted to adapt to pipes of different specifications or states; the elastic member is arranged between the telescopic column and the groove wall of the accommodating groove, can apply a force to the telescopic column to approach the fixed block, and ensures stable clamping of the telescopic column and the fixed block on the pipe; the positioning protrusion is inserted into the positioning groove, the positioning protrusion slides along the positioning groove and can abut against the groove wall away from the fixed block in the positioning groove, can limit the end of the telescopic column away from the fixed block to move away from the accommodating groove, ensures stable sliding of the telescopic column in the accommodating groove, avoids disengagement of the telescopic column from the accommodating groove, and improves stability and reliability of the device.

[0014] Specifically, the device further comprises a pipe moving assembly, a pipe feeding assembly, a screening assembly, a waste pipe cylinder and a finished pipe cylinder, the pipe moving assembly is provided with a pipe moving channel along the width direction of the pipe, and the pipe moving assembly can transport the pipe along the pipe moving channel; The pipe feeding assembly, the pipe clamping assembly, the waste pipe cylinder and the finished pipe cylinder are sequentially arranged along the direction in which the pipe moving assembly transports the pipe, and the pipe feeding assembly can insert the pipe into the pipe moving channel; When the pipe passes through the pipe clamping assembly along the pipe moving channel, the telescopic column can clamp the pipe with the fixed block and make the sensor detect the pipe; The screening assembly is arranged above the waste pipe cylinder and is electrically connected with the controller, when the detection result shows that the pipe has defects, the screening assembly can drive the pipe to move away from the pipe moving channel and enter the waste pipe cylinder; When the detection result shows that the pipe has no defects, the pipe can pass through the waste pipe cylinder along the pipe moving channel and enter the finished pipe cylinder.

[0015] By adopting the technical scheme, the pipe moving assembly forms a pipe moving channel and transports the pipe, the pipe inserting assembly can insert the pipe into the pipe moving channel, and automatic feeding of the pipe is realized. During the pipe transportation, the pipe clamping assembly can clamp and detect the pipe, and the detection result is transmitted to the controller by the sensor. The screening assembly works according to the detection result, and if the pipe has defects, the pipe is driven into the waste product cylinder, and if the pipe has no defects, the pipe is made to enter the finished product cylinder, so that automatic screening of the pipe is realized, and defective pipes are effectively prevented from entering the subsequent production process, and the product quality and production efficiency are improved.

[0016] Further, the pipe moving assembly comprises two rotary conveyors, the two rotary conveyors are arranged in parallel and at intervals, each of the rotary conveyors is arranged along the width direction of the feeding through hole, one end of the pipe is arranged on the belt body of one of the two rotary conveyors, and the other end of the pipe is arranged on the belt body of the other of the two rotary conveyors, and the pipe moving channel is formed between the two rotary conveyors. When the pipe passes above the finished product cylinder along the pipe moving channel, the belt bodies of the two rotary conveyors are away from each other, and the pipe falls into the finished product cylinder from between the two rotary conveyors.

[0017] By adopting the technical scheme, the two rotary conveyors arranged in parallel and at intervals are arranged along the width direction of the feeding through hole, and the two ends of the pipe are arranged on the belt bodies of the two rotary conveyors to form the pipe moving channel, so that the pipe can be stably transported; when the pipe passes above the finished product cylinder along the pipe moving channel, the belt bodies of the two rotary conveyors are away from each other, so that the pipe can smoothly fall into the finished product cylinder from between the two rotary conveyors, and automatic collection of qualified pipes is realized.

[0018] Further, a limiting through groove is formed in the belt body of each of the rotary conveyors, the pipe body of the pipe is arranged in the limiting through groove and can abut against the groove wall of the limiting through groove. Each of the rotary conveyors is provided with a pipe supporting plate on the side close to the pipe moving channel, the pipe supporting plate is located between the finished product cylinder and the waste product cylinder, the top of each of the pipe supporting plates is formed with a pipe supporting surface, the pipe supporting surface is inclined downward in the direction close to and away from the finished product cylinder, the ground clearance of the highest point of the pipe supporting surface is not higher than the ground clearance of the belt body of the rotary conveyor, before the belt bodies of the two rotary conveyors are away from each other, the pipe body of the pipe can abut against the two pipe supporting surfaces and move upward along the pipe supporting surfaces until the pipe body abuts against the top surface of the belt body of the corresponding rotary conveyor and leaves the limiting through groove.

[0019] By adopting the technical scheme, since the rotation axes of the rotary conveying belts are perpendicular to the horizontal plane, when the rotary conveying belts move to the arc-shaped sections thereof, the two rotary conveying belts move away from each other around the respective rotation axes. The limiting through slots on the rotary conveying belts can limit the pipe fittings, so as to avoid shaking and deviation of the pipe fittings during the transportation, and ensure stable transportation of the pipe fittings. The pipe supporting surface of the pipe supporting plate is obliquely arranged, and the highest point is not higher than the ground clearance of the rotary conveying belts, so that the pipe fitting can abut against the pipe supporting surface and move upward along the pipe supporting surface before the two rotary conveying belts move away from each other, thereby smoothly leaving the limiting through slots and abutting against the top surface of the rotary conveying belts, and the pipe fitting is prevented from being damaged by the slot walls of the limiting through slots when the two rotary conveying belts move away from each other.

[0020] Further, the upper pipe assembly comprises a pipe storage box, a pipe falling cylinder and a pipe distributing cylinder, the pipe storage box is internally provided with a containing cavity suitable for storing a stack of pipe fittings, a pipe inlet hole open to the outside is formed in the top wall of the containing cavity, a pipe outlet hole open to the outside is formed in the bottom wall of the containing cavity, the pipe outlet hole is located directly above the material moving channel, the pipe distributing cylinder and the pipe falling cylinder are arranged on the outer wall of the pipe storage box in a top-to-bottom manner, and the piston rods of the pipe distributing cylinder and the pipe falling cylinder both extend into the containing cavity through the through holes formed in the outer wall of the pipe storage box, when the piston rod of the pipe falling cylinder is elongated, the piston rod can abut against the pipe fitting located at the lowermost layer of the stack of pipe fittings and limit the pipe fitting from falling through the pipe outlet hole, and when the piston rod of the pipe falling cylinder is retracted into the cylinder body, the piston rod of the pipe distributing cylinder can be elongated and abut against the pipe fitting located at the second-to-last layer of the stack of pipe fittings to limit the pipe fitting other than the pipe fitting located at the lowermost layer from passing through the pipe outlet hole.

[0021] By adopting the technical scheme, the containing cavity of the pipe storage box can store a stack of pipe fittings, the pipe inlet hole facilitates replenishment of the pipe fittings, and the pipe outlet hole is located directly above the material moving channel to facilitate the pipe fittings to enter the pipe moving channel. The piston rods of the pipe falling cylinder and the pipe distributing cylinder extend into the containing cavity, the piston rod of the pipe falling cylinder can limit the pipe fitting at the lowermost layer to fall when the piston rod is elongated, and the piston rod of the pipe distributing cylinder can be elongated to limit the pipe fitting other than the pipe fitting at the lowermost layer to fall when the piston rod of the pipe falling cylinder is retracted, thereby realizing orderly feeding of the pipe fittings one by one and ensuring smooth progress of the detection process.

[0022] Further, the piston rod of the pipe distributing cylinder is connected with a wedge-shaped block, when the piston rod of the pipe falling cylinder abuts against the pipe fitting located at the lowermost layer of the stack of pipe fittings, the tip of the wedge-shaped block can be inserted into the gap between the pipe fitting located at the lowermost layer and the pipe fitting located at the second-to-last layer of the stack of pipe fittings and separate the two pipe fittings.

[0023] By adopting the above technical scheme, when the piston rod of the falling cylinder abuts against the lowermost pipe, the wedge-shaped block tip is inserted into the gap between the lowermost and the second-to-last pipe to separate the two pipes, so that only one pipe can fall into the rotary conveyor each time, the pipe overlapping is avoided, the pipe can enter the pipe moving channel for detection in sequence, and the detection efficiency and accuracy are improved.

[0024] Further, the screening assembly includes a screening cylinder and an abutting head, the screening cylinder is arranged above the barrel opening of the waste cylinder, and the abutting head is arranged on the piston rod of the screening cylinder. When the pipe is located above the barrel opening of the waste cylinder, the screening cylinder can drive the abutting head to abut and press down the middle part of the pipe until the pipe is bent downward and falls into the waste cylinder from between the two rotary conveyors.

[0025] By adopting the above technical scheme, the screening cylinder is arranged above the barrel opening of the waste cylinder, and the abutting head is arranged on the piston rod of the screening cylinder. When the pipe is located above the barrel opening of the waste cylinder, the screening cylinder can drive the abutting head to abut and press down the middle part of the pipe until the pipe is bent downward and falls into the waste cylinder from between the two rotary conveyors. The screening and separation of the defective pipe are realized, the defective pipe is prevented from entering the finished product cylinder, and the product quality and the yield of the production line are improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects: 1. The structure of the pipe clamping assembly, the sensor and the controller does not rely on precise visual detection components such as cameras, and solves the problem that the existing detection device occupies a large installation space at the feeding port and brings difficulties to the layout of the production line; 2. The sensor detects the distance between the telescopic column and the limiting block and sends the result to the controller, and the controller controls the on-off of the material loading equipment, so that the material blocking and shutdown phenomenon caused by the length deviation of the plastic pipe is avoided, and the equipment operation efficiency and product quality are improved; 3. By arranging the pipe moving assembly, the pipe feeding assembly, the screening assembly, the waste cylinder and the finished product cylinder, the pipe can be screened, the defective pipe is separated into the waste cylinder, and the non-defective pipe enters the finished product cylinder, so that the quality of the pipe is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of the first embodiment of the present application; Figure 2 is a top view of the first embodiment of the present application; Figure 3 is a schematic sectional view taken along the direction of A-A, wherein only part of the pipe is shown; Figure 2 Figure 4 Figure 3 ​​schematic cross-sectional view taken in the B-B direction; Figure 5 is a perspective view of a second embodiment of the present application; Figure 6 is a schematic cross-sectional view taken along the Figure 5 schematic cross-sectional view taken in the middle axis of the screening cylinder; Figure 7 is a schematic cross-sectional view taken in the middle axis of the screening cylinder; Figure 6 is a schematic enlarged view of the C region, wherein the upper tube assembly is shown.

[0028] Reference signs: 1, pipe clamping assembly; 11, fixed block; 111, feeding through hole; 12, limiting block; 13, telescopic column; 131, light transmission through hole; 14, driving unit; 141, driving cylinder; 142, moving block; 1421, positioning protrusion; 143, elastic member; 2, pair of light-sensing photoelectric sensors; 3, pipe; 4, pipe moving assembly; 41, rotary conveyor belt; 411, limiting through slot; 42, pipe supporting plate; 5, upper tube assembly; 51, pipe storage box; 52, pipe falling cylinder; 53, pipe separating cylinder; 531, wedge-shaped block; 6, screening assembly; 61, screening cylinder; 62, abutting head; 7, waste product cylinder; 8, finished product cylinder. DETAILED DESCRIPTION

[0029] The above description is further illustrated by the following drawings: Figures 1-7 Further description is made as follows: Reference is made to Figure 1 , Figure 2 and Figure 3In a first embodiment, a plastic pipe rapid positioning detection device is arranged at a material loading station of a semiconductor production line, and specifically includes a pipe clamping assembly 1, a sensor and a controller (not shown in the figure). The pipe clamping assembly 1 includes a fixed block 11, a limiting block 12, two telescopic columns 13 and a driving unit 14. The pipe 3 to be detected is arranged between the fixed block 11 and the limiting block 12 along the length direction of the pipe 3. An upper material feeding through hole 111 is formed in the fixed block 11 along the length direction of the pipe 3, and the material to be loaded can pass through the upper material feeding through hole 111 and enter the pipe 3. Two telescopic holes are formed in the limiting block 12 along the length direction of the pipe 3. The telescopic columns 13 are one-to-one corresponding to the telescopic holes, and each telescopic column 13 is arranged in a corresponding telescopic hole. The driving unit 14 includes a driving cylinder 141, a moving block 142 and a resilient member 143. The moving block 142 is provided with two accommodating grooves which are one-to-one corresponding to the telescopic columns 13. Each telescopic hole penetrates through the entire limiting block 12 along the length direction of the pipe 3. The end of each telescopic column 13 away from the fixed block 11 penetrates through a corresponding telescopic hole and is arranged in a corresponding accommodating groove and can slide along the accommodating groove. The piston rod of the driving cylinder 141 is connected with the moving block 142 and can drive the moving block 142 to approach or move away from the fixed block 11. The resilient member 143 is arranged between each telescopic column 13 and the groove wall of the accommodating groove, and the resilient member 143 can be a compression spring, so that the resilient member 143 can apply a force to the telescopic column 13 to approach the fixed block 11. A positioning protrusion 1421 is further formed on the groove wall of the accommodating groove. A positioning groove is formed on the column of the telescopic column 13. The positioning protrusion 1421 is arranged in the positioning groove and can slide along the positioning groove. The positioning protrusion 1421 can abut against the groove wall away from the fixed block 11 in the positioning groove and limit the end of the telescopic column 13 away from the fixed block 11 to move away from the accommodating groove.

[0030] Referring to Figure 1 , Figure 2 and Figure 4, the sensor includes two pairs of photoelectric sensors 2, the telescopic column 13 is located between the two pairs of photoelectric sensors 2, and the telescopic column 13 is provided with a light transmission hole 131 in the width direction of the pipe 3 on the column body, and the moving block 142 is provided with a detection hole in the width direction of the pipe 3, and the detection hole penetrates through the entire moving block 142; during detection, the driving cylinder 141 first drives the moving block 142 to approach the fixed block 11 until the detection hole coincides with the light path between the two pairs of photoelectric sensors 2, at this time, each elastic member 143 will make the corresponding telescopic column 13 extend and clamp the pipe 3 with the fixed block 11, if the pipe 3 has no defects such as bending, shortage and other length unqualified defects, the light transmission hole 131 on each telescopic column 13 will also coincide with the light path between the two pairs of photoelectric sensors 2, and then the light emitted by one of the two pairs of photoelectric sensors 2 can pass through the light transmission hole 131 and be received by the other of the two pairs of photoelectric sensors 2; if the pipe 3 has defects such as bending, shortage and other length defects, the light transmission hole 131 on a certain telescopic column 13 will not coincide with the light path between the two pairs of photoelectric sensors 2, and then the light emitted by one of the two pairs of photoelectric sensors 2 cannot pass through the light transmission hole 131 and be received by the other of the two pairs of photoelectric sensors 2; the two pairs of photoelectric sensors 2 are electrically connected with the controller and can send the detection result to the controller, the controller is electrically connected with the equipment responsible for loading materials into the pipe 3 on the semiconductor production line, and can control the opening and closing of the equipment according to the detection result, and the equipment responsible for loading materials into the pipe 3 is prior art, which will not be described here.

[0031] Specifically, the light transmission hole 131 can be set as a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the pipe 3, so that the plastic pipe rapid positioning and detection device can identify the pipe 3 with a larger length size range as a qualified product; different stiffness coefficients of springs can also be replaced according to the softness and hardness of the pipe 3, so as to prevent the spring force from damaging the relatively soft pipe 3.

[0032] Referring to Figure 5 , Figure 6 and Figure 7 , in the second embodiment, the plastic pipe rapid positioning and detection device further includes a pipe moving assembly 4, an upper pipe assembly 5, a screening assembly 6, a waste product cylinder 7 and a finished product cylinder 8, the pipe moving assembly 4 includes two rotary conveyors 41, the two rotary conveyors 41 are arranged in parallel and at intervals, each rotary conveyor 41 is arranged in the width direction of the feeding hole 111, one end of the pipe 3 is arranged on the belt body of one of the two rotary conveyors 41, the other end of the pipe 3 is arranged on the belt body of the other of the two rotary conveyors 41 and forms a pipe moving channel between the two rotary conveyors 41, a support frame is arranged above the two rotary conveyors 41, the upper pipe assembly 5, the pipe clamping assembly 1 and the screening assembly 6 are sequentially arranged on the support frame in the direction in which the pipe moving channel transports the pipe 3.

[0033] Specifically, since each rotary conveyor 41 is intermittent when transporting the pipe 3 and needs to stop at the corresponding station, a limiting through groove 411 can be formed on the belt body of each rotary conveyor 41, the pipe body of the pipe 3 is arranged in the limiting through groove 411 and can abut against the groove wall of the limiting through groove 411, when the pipe 3 is located at the pipe clamping assembly 1, the material to be loaded can pass through the corresponding limiting through groove 411 on the belt body of the rotary conveyor 41 and enter the feeding through hole 111; each rotary conveyor 41 is provided with a pipe supporting plate 42 on the side close to the pipe moving channel, the pipe supporting plate 42 is located between the finished product cylinder 8 and the waste product cylinder 7, the top of each pipe supporting plate 42 is formed with a pipe supporting surface, the pipe supporting surface is inclined downward in the direction close to and away from the finished product cylinder 8, and the ground clearance of the highest point of the pipe supporting surface is not higher than the ground clearance of the belt body of the rotary conveyor 41, before the belt bodies of the two rotary conveyors 41 move away from each other, the pipe body of the pipe 3 can abut against the two pipe supporting surfaces and move upward along the pipe supporting surfaces until the limiting through groove 411 abuts against the top surface of the corresponding rotary conveyor 41, since the rotation axis of the belt body of the rotary conveyor 41 is perpendicular to the horizontal plane, when the belt body of the rotary conveyor 41 moves to the arc-shaped section thereof, the belt bodies of the two rotary conveyors 41 move away from each other around the respective rotation axes. The limiting through groove 411 on the belt body of the rotary conveyor 41 can limit the pipe 3, avoiding the pipe 3 from shaking and deviating during the transportation, and ensuring the stable transportation of the pipe 3. The pipe supporting surface of the pipe supporting plate 42 is inclined and the ground clearance of the highest point is not higher than the ground clearance of the belt body of the rotary conveyor 41, so that the pipe 3 can abut against the pipe supporting surface and move upward along the pipe supporting surface before the belt bodies of the two rotary conveyors 41 move away from each other, thereby smoothly leaving the limiting through groove 411 and abutting against the top surface of the belt body of the rotary conveyor 41, preventing the pipe 3 from being damaged by the groove wall of the limiting through groove 411 when the belt bodies of the two rotary conveyors 41 move away from each other, and then making the pipe 3 fall into the finished product cylinder 8 from between the belt bodies of the two rotary conveyors 41 when passing above the finished product cylinder 8 along the pipe moving channel.

[0034] Referring to Figure 5 , Figure 6 and Figure 7The upper tube assembly 5 comprises a tube storage box 51, a tube falling cylinder 52 and a tube separating cylinder 53. The tube storage box 51 is internally provided with a containing cavity suitable for storing a stack of tubes 3. A tube inlet hole is formed in the top wall of the containing cavity and opens to the outside. A tube outlet hole is formed in the bottom wall of the containing cavity and opens to the outside. The tube outlet hole is located directly above the material moving channel. The tube separating cylinder 53 and the tube falling cylinder 52 are arranged on the outer wall of the tube storage box 51 in a top-to-bottom manner. The piston rods of the tube separating cylinder 53 and the tube falling cylinder 52 both extend into the containing cavity through the through holes formed in the outer wall of the tube storage box 51. When the piston rod of the tube falling cylinder 52 is in an elongated state, the piston rod can abut against the tube 3 located at the lowermost layer of the stack of tubes 3 and limit the tube 3 from falling through the tube outlet hole and onto the two rotary conveyors 41. When the piston rod of the tube falling cylinder 52 is retracted into the cylinder body, the piston rod of the tube separating cylinder 53 can be elongated and abut against the tube 3 located at the second-to-last layer of the stack of tubes 3, so as to limit the tubes 3 other than the tube located at the lowermost layer of the stack of tubes 3 from passing through the tube outlet hole. In this way, the tubes 3 can be sequentially and orderly fed, and the smooth progress of the detection process is ensured. A wedge-shaped block 531 is connected to the piston rod of the tube separating cylinder 53. When the piston rod of the tube falling cylinder 52 abuts against the tube 3 located at the lowermost layer of the stack of tubes 3, the tip of the wedge-shaped block 531 can be inserted into the gap between the tube 3 located at the lowermost layer and the tube 3 located at the second-to-last layer of the stack of tubes 3 and separate the two tubes 3. The wedge-shaped block 531 can also be arranged on the piston rod of the tube falling cylinder 52.

[0035] Referring to Figure 5 , Figure 6 and Figure 7 , the screening assembly 6 comprises a screening cylinder 61 and an abutting head 62. The screening cylinder 61 is arranged directly above the barrel mouth of the waste barrel 7 and is electrically connected with the controller. The abutting head 62 is arranged on the piston rod of the screening cylinder 61. When the tube 3 is located directly above the barrel mouth of the waste barrel 7, the controller can control the screening cylinder 61 to drive the abutting head 62 to abut against and press down the middle part of the tube 3, until the tube 3 is bent downward and falls into the waste barrel 7 from between the two rotary conveyors 41, so as to realize the screening and separation of the defective tubes 3 and avoid the defective tubes 3 from entering the finished product barrel 8, thereby improving the quality of the product and the yield of the production line.

[0036] The implementation principle of the plastic tube rapid positioning and detection device is as follows: The telescopic column 13 of the pinch tube assembly 1 is matched with the fixed block 11 to clamp the pipe 3, the sensor can detect the distance between the telescopic column 13 and the limiting block 12 and send the result to the controller, the controller controls the switch of the material loading equipment according to the detection result, the rapid positioning detection of the pipe 3 can be realized, it is ensured that only the pipe 3 meeting the requirements is subjected to material loading, and the conditions such as material jamming and shutdown due to defects of the pipe 3 are prevented. Moreover, most of the detection components of the device are arranged away from the pipe 3 feeding port, compared with the traditional detection device which adds precise visual detection components such as cameras at the plastic pipe feeding port, the occupancy of the feeding port installation space is reduced, the problem that the existing detection device occupies a large amount of installation space and causes difficulties in production line arrangement is solved, and the production line is more convenient to arrange reasonably.

[0037] The embodiments of the specific implementation are the preferred embodiments of the application, and are not intended to limit the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A rapid positioning and detection device for plastic pipes, installed at the material loading station of a production line, characterized in that: The device includes a pipe clamping assembly (1), a sensor, and a controller. The pipe clamping assembly (1) includes a fixing block (11), a limiting block (12), a telescopic column (13), and a driving unit (14). The pipe fitting (3) to be detected is located between the fixing block (11) and the limiting block (12) along its own length direction. The fixing block (11) has a feeding through hole (111) along the length direction of the pipe fitting (3). The material to be loaded can pass through the feeding through hole (111) and enter the pipe fitting (3). The limiting block (12) has a telescopic hole along the length direction of the pipe fitting (3). The telescopic column (13) is located in the telescopic hole. The driving unit (14) is connected to the telescopic column (13) and can drive the telescopic column (13) away from the fixing block (11) or close to the fixing block (11) and clamp the pipe fitting (3) with the fixing block (11). When the telescopic column (13) and the fixed block (11) clamp the pipe fitting (3), the sensor can detect the distance between the end of the telescopic column (13) near the fixed block (11) and the limiting block (12), and the sensor is electrically connected to the controller and can send the detection result to the controller; The controller can control the switching of the equipment at the material loading station used to load materials into the pipe (3) based on the detection results.

2. The rapid positioning and detection device for plastic pipes according to claim 1, characterized in that: The sensor includes two through-beam photoelectric sensors (2), and the telescopic column (13) is located between the two through-beam photoelectric sensors (2). The telescopic column (13) has a light-transmitting hole (131) on its body along the width direction of the pipe (3). When the telescopic column (13) and the fixing block (11) clamp the pipe (3) and the pipe (3) is free of defects, the light emitted by one of the two through-beam photoelectric sensors (2) can pass through the light-transmitting hole (131) and be received by the other of the two through-beam photoelectric sensors (2).

3. The rapid positioning and detection device for plastic pipes according to claim 2, characterized in that: The light-transmitting through hole (131) is a waist-shaped hole, and the length direction of the waist-shaped hole is parallel to the length direction of the pipe (3).

4. The rapid positioning and detection device for plastic pipes according to claim 1, characterized in that: The drive unit (14) includes a drive cylinder (141), a moving block (142), and an elastic element (143). The moving block (142) has a receiving groove. The telescopic hole extends through the entire limiting block (12) along the length of the pipe (3). One end of the telescopic column (13) away from the fixed block (11) passes through the telescopic hole and is inserted into the receiving groove, and can slide along the receiving groove. The drive cylinder (141) is connected to the moving block (142) and can drive the moving block (142) to move closer to or away from the fixed block (11). The elastic element (143) A positioning protrusion (1421) is provided between the telescopic column (13) and the groove wall of the receiving groove and can apply a force close to the fixing block (11) to the telescopic column (13). A positioning groove is formed on the groove wall of the receiving groove. The positioning protrusion (1421) is inserted into the positioning groove and can slide along the positioning groove. The positioning protrusion (1421) can abut against the groove wall on the side away from the fixing block (11) in the positioning groove and restrict the end of the telescopic column (13) away from the fixing block (11) from leaving the receiving groove.

5. The rapid positioning and detection device for plastic pipes according to claim 1, characterized in that: It also includes a pipe transfer assembly (4), a pipe mounting assembly (5), a screening assembly (6), a waste cylinder (7), and a finished product cylinder (8). The pipe transfer assembly (4) has a pipe transfer channel formed along the width direction of the pipe fitting (3), and the pipe transfer assembly (4) can transport the pipe fitting (3) along the pipe transfer channel. The upper pipe assembly (5), the clamping pipe assembly (1), the waste cylinder (7) and the finished product cylinder (8) are arranged sequentially along the direction of transporting the pipe fitting (3) in the pipe transfer channel. The upper pipe assembly (5) can insert the pipe fitting (3) into the pipe transfer channel. When the pipe fitting (3) passes through the pipe clamping assembly (1) along the pipe transfer channel, the telescopic column (13) can clamp the pipe fitting (3) with the fixing block (11) and enable the sensor to detect the pipe fitting (3); The screening component (6) is located above the waste cylinder (7) and electrically connected to the controller. When the detection result shows that the pipe fitting (3) is defective, the screening component (6) can drive the pipe fitting (3) to leave the pipe transfer channel and enter the waste cylinder (7). When the test results show that the pipe fitting (3) is free of defects, the pipe fitting (3) can pass through the waste cylinder (7) along the pipe transfer channel and enter the finished product cylinder (8).

6. The rapid positioning and detection device for plastic pipes according to claim 5, characterized in that: The tube transfer assembly (4) includes two rotary conveyor belts (41) arranged in parallel and spaced apart. Each rotary conveyor belt (41) is arranged along the width direction of the feeding through hole (111). One end of the tube (3) rests on the belt body of one of the two rotary conveyor belts (41), and the other end of the tube (3) rests on the belt body of the other of the two rotary conveyor belts (41), thus forming the tube transfer channel between the two rotary conveyor belts (41). As the pipe fitting (3) passes directly above the finished product cylinder (8) along the pipe transfer channel, the belts of the two rotary conveyor belts (41) move away from each other and cause the pipe fitting (3) to fall into the finished product cylinder (8) between the two rotary conveyor belts (41).

7. The rapid positioning and detection device for plastic pipes according to claim 6, characterized in that: Each of the rotary conveyor belts (41) has a limiting groove (411) on its belt body. The tube of the pipe (3) is inserted into the limiting groove (411) and can abut against the groove wall of the limiting groove (411). Each of the rotary conveyor belts (41) is provided with a support plate (42) on the side near the transfer channel. The support plate (42) is located between the finished product cylinder (8) and the waste cylinder (7). Each support plate (42) has a support surface on its top. The support surface is inclined downward in the direction from the finished product cylinder (8) to the side away from it. The height of the highest point of the support surface is not higher than the height of the rotary conveyor belt (41) from the ground. Before the belts of the two rotary conveyor belts (41) move away from each other, the tube body of the fitting (3) can abut against the two support surfaces and move up along each support surface until it leaves the limiting groove (411) and abuts against the top surface of the corresponding rotary conveyor belt (41).

8. The rapid positioning and detection device for plastic pipes according to claim 6, characterized in that: The upper pipe assembly (5) includes a storage box (51), a pipe drop cylinder (52), and a branch pipe cylinder (53). The storage box (51) has a cavity suitable for storing a stack of pipe fittings (3). The top wall of the cavity has an inlet hole leading to the outside, and the bottom wall has an outlet hole leading to the outside. The outlet hole is located directly above the material transfer channel. The branch pipe cylinder (53) and the pipe drop cylinder (52) are arranged vertically on the outer wall of the storage box (51), and the piston rods of the branch pipe cylinder (53) and the pipe drop cylinder (52) both pass through the storage box. 51) The through hole on the outer wall extends into the receiving cavity. When the piston rod of the pipe drop cylinder (52) is extended, it can abut against the pipe (3) located at the bottom layer of the stack of pipes (3) and restrict the pipe (3) from passing through the outlet hole and falling onto the two rotary conveyor belts (41). When the piston rod of the pipe drop cylinder (52) retracts into the cylinder body, the piston rod of the branch pipe cylinder (53) can extend and abut against the pipe (3) located at the second to last layer of the stack of pipes (3) to restrict the pipe (3) not located at the bottom layer of the stack of pipes (3) from passing through the outlet hole.

9. The rapid positioning and detection device for plastic pipes according to claim 8, characterized in that: A wedge block (531) is connected to the piston rod of the pipe cylinder (53). When the piston rod of the pipe drop cylinder (52) abuts against the pipe (3) located at the bottom layer of a stack of pipe fittings (3), the tip of the wedge block (531) can be inserted into the gap between the pipe (3) located at the bottom layer and the pipe (3) located at the second to last layer of a stack of pipe fittings (3) and separate the two pipe fittings (3).

10. A rapid positioning and detection device for plastic pipes according to claim 6, characterized in that: The screening assembly (6) includes a screening cylinder (61) and an abutment (62). The screening cylinder (61) is located directly above the opening of the waste cylinder (7). The abutment (62) is located on the piston rod of the screening cylinder (61). When the pipe (3) is located directly above the opening of the waste cylinder (7), the screening cylinder (61) can drive the abutment (62) to abut and press down on the middle of the pipe (3) until the pipe (3) bends downward and falls into the waste cylinder (7) between the two rotary conveyor belts (41).

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