Injection molding part surface defect detection equipment

Abstract

The invention relates to the technical field of injection molding part detection equipment, and discloses injection molding part surface defect detection equipment. Through cooperation of an overturning assembly and a driving assembly, when an overturning shaft drives a clamping baffle to overturn and convey a clamped and fixed injection molding part to a discharging conveying belt, a driving ring drives a push rod to move; according to the reverse side cleaning device, the rotating disc in the reverse side cleaning box is driven by the push rod to drive the air nozzle to synchronously move along with the overturned injection molding part, the reverse side of the injection molding part is cleaned in the overturning process, the neutral time during overturning is fully utilized, and after the injection molding part is overturned to the discharging conveying belt, the reverse side of the injection molding part is cleaned. The overturning assembly can clamp and fix the next injection molding part on the feeding conveying belt while the clamped injection molding part is put, clamping and putting are conducted at the same time, overturning can be conducted immediately after clamping, and therefore the efficiency of overturning the injection molding part is improved, and the detection efficiency of the injection molding part is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molded part detection equipment, in particular to an injection molded part surface defect detection equipment. Background Art

[0002] Injection molded parts refer to various injection molded products produced by injection molding machines, including various parts, etc. They are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. After the injection molded parts are produced, it is usually necessary to perform defect detection on the surface of the injection molded parts to ensure the precise fit between the injection molded parts and the assembly. In the prior art, it is usually necessary to use an industrial camera to photograph the surface of the injection molded parts, and then upload the surface information of the injection molded parts to a computer, and compare the image information through the computer to achieve defect detection on the surface of the injection molded parts;

[0003] Chinese patent CN117434072A discloses a device for detecting surface defects of injection molded parts, including a machine body and an industrial camera, including a flipping member, a clamping member and a pushing member. Two conveying mechanisms for reverse conveying are installed on the machine body, a slip ring is provided on the outer sliding sleeve of the horizontal axis, a driving member is provided on the vertical frame, and a guide member is provided on the slip ring; two clamping plates are slidably provided in the open groove, and a transmission member is provided on the flip frame; a push plate is horizontally slidably provided on the upper part of the machine body, and the slip ring is controlled by the driving member to move along the horizontal axis, so that the flip frame delivers the injection molded parts to another conveying mechanism running in the reverse direction by a pick-up and flipping method, so as to realize double-sided photo detection of the injection molded parts, thereby achieving the purpose of improving the detection efficiency of the detection device for batch injection molded parts, and after one side of the injection molded part is photographed and detected, it is immediately turned over for photo detection on the reverse side, which is conducive to ensuring the accuracy of the injection molded part detection result;

[0004] However, in the process of flipping the injection molded parts by the device, after the injection molded parts enter the flipping frame, it is necessary to wait for the guide rod to enter the spiral section from the straight section of the first slideway before the flipping frame can flip the injection molded parts with it, and it is necessary to wait for the pushing member to push the injection molded parts out of the flipping frame before the device can detect the back side of the injection molded parts. As a result, after detecting one side of the injection molded parts, the device needs to wait for a long time before continuing to detect the back side, thereby slowing down the detection speed of the injection molded parts. In addition, in the process of concentratedly transporting the injection molded parts to the detection device after injection molding, the injection molded parts will collide and squeeze each other, causing some residues, stains, dust and other dirt brought out during injection molding to adhere to the surfaces of some injection molded parts. As a result, during inspection, injection molded parts with smooth surfaces and no defects are regarded as defective due to the attached dirt, or surface defects are concealed by dirt and are regarded as no defects, resulting in inaccurate detection results. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides an injection molded part surface defect detection device to overcome the above-mentioned technical problems existing in the prior art.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an injection molded part surface defect detection device, comprising a detection platform, characterized in that: the detection platform is provided with a front cleaning box, a flip assembly, a back cleaning box and a rejection assembly, the detection platform comprises a loading conveyor belt and a unloading conveyor belt, a discharge hopper is provided between the loading conveyor belt and the unloading conveyor belt, and the sides of the loading conveyor belt and the unloading conveyor belt are both provided with detection heads;

[0007] The flip assembly includes a flip shaft and a clamping baffle, the flip shaft is rotatably arranged above the discharge hopper, one end of the flip shaft is connected to a driving ring, the clamping baffle is installed on both sides of the flip shaft, the flip shaft can drive the driving ring and the clamping baffle to rotate, a turntable and a driving assembly are arranged in the reverse cleaning box, the driving assembly is fitted between the turntable and the driving ring, and the driving ring drives the driving assembly when rotating, so that the driving assembly drives the turntable to reciprocate, and air nozzles are arranged in the front cleaning box and the reverse cleaning box, and the air nozzles in the reverse cleaning box are connected to the turntable, and the rotating turntable drives the air nozzles to follow the movement of the flipped injection molded part.

[0008] Preferably, the front cleaning box includes two positioning plates, one end of the two positioning plates are rotatably connected to the inner walls on both sides of the front cleaning box close to the loading end of the detection table, and are located at the bottom of the front cleaning box, and a support spring is fixedly connected between the other end of the positioning plate and the inner wall of the front cleaning box, and the support spring pushes the positioning plate to extend to the middle of the front cleaning box.

[0009] Preferably, the flipping assembly also includes a driving motor and a fixed seat, one end of the flipping shaft is coaxially fixedly connected with a worm gear, the worm gear is located on one side of the driving ring, the driving motor is fixedly installed on one side of the detection platform, the output shaft of the driving motor is coaxially fixedly connected with a worm, the worm gear is fitted on the worm, the fixed seat is fixedly installed on the flipping shaft, driving cylinders are provided in the middle of both sides of the fixed seat, the output end of the driving cylinder is fixedly connected to one side of the clamping baffle, and the two ends of the flipping shaft are also fixedly connected with clamping racks, and the clamping racks are located on both sides of the driving cylinder.

[0010] Preferably, a driving groove is provided on the other side of the clamping baffle, and a threaded rod is rotatably installed in the driving groove. The threads on both ends of the threaded rod are in opposite directions, and the ends on both sides of the threaded rod extend out of the driving groove. A clamping gear is coaxially fixedly connected to the extended end of the threaded rod, and the clamping gear is meshed on the clamping rack. Two sliding members are slidably installed in the driving groove, and the two sliding members are respectively assembled at the two ends of the threaded rod through threads. A clamping claw is fixedly connected to one side of the sliding member, and the clamping claw extends out of the driving groove.

[0011] Preferably, the turntable is rotatably mounted on an inner wall of one side of the reverse cleaning box, and an arc groove is provided on this side of the reverse cleaning box, the arc groove corresponds to the rotation trajectory of the turntable, and a fan gear is fixedly connected to the lower side of the turntable.

[0012] Preferably, the driving assembly includes a push rod, a protrusion is fixedly connected to one side of the lower end of the push rod, one end of the protrusion abuts against the driving ring, a reset spring is fixedly connected between the other side of the push rod and the inner wall of the reverse cleaning box, the reset spring pushes the protrusion on the push rod to abut against the driving ring, a reset rack is fixedly connected to the upper end of the push rod, and the fan gear is meshed with the reset rack.

[0013] Preferably, an air pump is provided at the bottom of the testing table, and the air pump is fixedly connected to the input end of the air pipeline. The output end of the air pipeline is divided into two ends, one end of the air pipeline is fixedly connected to the air nozzle in the front cleaning box, and the other end of the air pipeline passes through the arc groove and is fixedly connected to the air nozzle on the turntable. When the turntable rotates, the air pipeline is driven to move in the arc groove.

[0014] Preferably, two dust suction devices are arranged on the detection table, and dust suction ports are opened on the sides of the front cleaning box and the back cleaning box, and the dust suction ports are connected to the dust suction devices.

[0015] Preferably, electric slide rails are fixedly installed on both sides of the detection platform, telescopic arms are slidably installed on the electric slide rails, and the detection head is fixedly connected to the telescopic arms.

[0016] Preferably, the reject assembly comprises a reject cylinder and a push plate, the reject cylinder is arranged on one side of the discharge end of the detection table, and the push plate is fixedly connected to the output end of the reject cylinder.

[0017] Compared with the prior art, the present invention provides an injection molded part surface defect detection device, which has the following beneficial effects:

[0018] 1. The injection molded part surface defect detection equipment, through the cooperation of the flip assembly and the drive assembly, when the flip shaft drives the clamping baffle to flip a clamped injection molded part to send it to the unloading conveyor, the push rod is driven to move by the drive ring, so that the turntable in the reverse cleaning box moves synchronously with the flipped injection molded part with the air nozzle under the drive of the push rod, and the reverse side is cleaned during the flipping process, which makes full use of the idle time during flipping. After the injection molded part is flipped to the unloading conveyor, the flip assembly can clamp and fix the next injection molded part on the loading conveyor while dropping the clamped injection molded part, so that the clamping and dropping are carried out simultaneously, and the part can be flipped immediately after clamping, thereby speeding up the efficiency of flipping the injection molded part and improving the detection efficiency of the injection molded part.

[0019] 2. The injection molded part surface defect detection equipment can effectively clean both the front and back sides of the injection molded parts by setting the front cleaning box and the back cleaning box, thereby avoiding the detection head being affected by the dirt attached to the surface of the injection molded parts and making misjudgments, resulting in inaccurate detection results, thereby improving the accuracy of the equipment.

[0020] 3. The injection molded parts surface defect detection equipment, through the setting of the discharge hopper and the rejection component, when the detection head detects defects on the front and back sides of the injection molded parts, the discharge hopper and the rejection component will reject them from the detection table, so that only intact injection molded parts can pass through the detection table, which facilitates the classification and collection of injection molded parts after detection, thereby improving the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 for Figure 1 A local enlarged structural schematic diagram;

[0023] Figure 3 It is a schematic diagram of the left structure of the present invention;

[0024] Figure 4 It is a schematic cross-sectional structural diagram of the front cleaning box of the present invention;

[0025] Figure 5 It is a schematic diagram of the exploded cross-sectional structure of the flip assembly and the right side of the reverse cleaning box of the present invention;

[0026] Figure 6 It is a schematic diagram of the right structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the left side structure of the present invention;

[0028] Figure 8 It is a schematic cross-sectional structural diagram of some components of the flip assembly of the present invention;

[0029] Fig. 9 It is a right side cross-sectional structural schematic diagram of the present invention.

[0030] In the figure: 1. Inspection table; 11. Electric slide rail; 12. Telescopic arm; 13. Inspection head; 14. Air pump; 141. Air pipeline; 15. Loading conveyor belt; 16. Unloading conveyor belt; 17. Discharge hopper; 2. Front cleaning box; 21. Positioning plate; 22. Support spring; 3. Turnover assembly; 31. Turnover shaft; 311. Worm gear; 32. Drive motor; 321. Worm; 33. Fixed seat; 331. Drive cylinder; 332. Clamping rack; 34. Clamping baffle; 341, driving groove; 342, threaded rod; 343, clamping gear; 35, sliding member; 351, clamping claw; 36, driving ring; 4, reverse cleaning box; 41, arc groove; 42, turntable; 421, fan gear; 5, driving assembly; 51, push rod; 511, bump; 52, reset spring; 53, reset rack; 6, air nozzle; 7, dust suction device; 71, dust suction port; 8, rejection assembly; 81, rejection cylinder; 82, push plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1;

[0033] See also Figure 1-Figure 9 , an injection molded part surface defect detection device, comprising a detection platform 1, on which a front cleaning box 2, a flip assembly 3, a back cleaning box 4 and a rejection assembly 8 are arranged, the detection platform 1 comprises a loading conveyor belt 15 and a unloading conveyor belt 16, a discharge hopper 17 is arranged between the loading conveyor belt 15 and the unloading conveyor belt 16, and detection heads 13 are arranged on the sides of the loading conveyor belt 15 and the unloading conveyor belt 16;

[0034] The flip assembly 3 includes a flip shaft 31 and a clamping baffle 34. The flip shaft 31 is rotatably arranged above the discharge hopper 17. One end of the flip shaft 31 is connected to a driving ring 36. The clamping baffle 34 is installed on both sides of the flip shaft 31. The flip shaft 31 can drive the driving ring 36 and the clamping baffle 34 to rotate. A turntable 42 and a driving assembly 5 are arranged in the reverse cleaning box 4. The driving assembly 5 is matched between the turntable 42 and the driving ring 36. When the driving ring 36 rotates, it drives the driving assembly 5, so that the driving assembly 5 drives the turntable 42 to reciprocate. Air nozzles 6 are arranged in both the front cleaning box 2 and the reverse cleaning box 4, and the air nozzles 6 in the reverse cleaning box 4 are connected to the turntable 42. The rotating turntable 42 drives the air nozzles 6 to follow the movement of the flipped injection molded part.

[0035] When in use, the device is first started, and the injection molded parts to be inspected are placed one by one from the loading end of the inspection table 1 onto the loading conveyor 15. The loading conveyor 15 carries the injection molded parts through the front cleaning box 2. The air nozzle 6 in the front cleaning box 2 sprays airflow to the injection molded parts passing through to blow away the dirt on the front of the injection molded parts. After passing through the front cleaning box 2, the injection molded parts come under the inspection head 13. The inspection head 13 takes a photo of the front of the injection molded parts for inspection. When the inspection head 13 detects that there are defects on the front of the injection molded parts, the flip component 3 is not started, so that the defective injection molded parts on the front are transported by the loading conveyor 15 into the discharge hopper 17. The discharge hopper 1 7 discharges it from the inspection table 1. When the front side of the injection molded part passes the inspection, the flip assembly 3 is started, and the clamping baffle 34 catches the injection molded part before it enters the discharge hopper 17. Then the flip shaft 31 drives the clamping baffle 34 and the injection molded part thereon to rotate in the direction of the lower material conveyor 16. After the flip shaft 31 rotates the flip assembly 3 by 90 degrees, the back side of the injection molded part on the clamping baffle 34 begins to gradually turn upward and enter the back side cleaning box 4. The driving ring 36 rotates synchronously with the flip shaft 31, wherein part of the outer side of the driving ring 36 gradually protrudes outward. Before the injection molded part enters the back side cleaning box 4, the protruding part of the driving ring 36 is aligned with the back side cleaning box 4. The injection molded part is in contact with the driving assembly 5. As the flip shaft 31 continues to rotate, the injection molded part enters the back cleaning box 4 and is located below the air nozzle 6. The driving ring 36 contacts the driving assembly 5 from its convex part and gradually changes to contact with the driving assembly 5 at the concave part, so that the driving assembly 5 moves toward the flip shaft 31. The turntable 42 brings the air nozzle 6 to rotate with the injection molded part, so that the air nozzle 6 on the turntable 42 sprays air to the back side of the injection molded part to blow away the dirt on the back side of the injection molded part. The injection molded part rotates a certain angle in the back cleaning box 4. After being cleaned by the air nozzle 6, the driving assembly 5 leaves the concave part of the driving ring 36 and contacts with the driving assembly 5 again. The protruding part of the moving ring 36 contacts and drives the driving component 5 away from the flip shaft 31. The driving component 5 drives the turntable 42 to rotate in the opposite direction to reset. The flip shaft 31 drives the clamping baffle 34 to flip 180 degrees and then stop rotating. The clamping baffle 34 puts the turned-over injection molded part onto the unloading conveyor 16. The unloading conveyor 16 transports the injection molded part to another detection head 13, so that the detection head 13 takes a photo of the back side of the injection molded part for detection. When there is a defect on the back side of the injection molded part, the rejection component 8 rejects it from the detection table 1. When the back side of the injection molded part also passes the detection, the injection molded part will be transported out of the detection table 1 by the unloading conveyor 16 to enter the next production process.

[0036] The difference from the above embodiment is that the front cleaning box 2 includes two positioning plates 21, one end of the two positioning plates 21 are rotatably connected to the inner walls on both sides of the front cleaning box 2 close to the feeding end of the detection table 1, and are located at the bottom of the front cleaning box 2, and a support spring 22 is fixedly connected between the other end of the positioning plate 21 and the inner wall of the front cleaning box 2, and the support spring 22 pushes the positioning plate 21 to extend to the middle of the front cleaning box 2.

[0037] Among them, when no injection molded parts pass through the front cleaning box 2, the positioning plate 21 in the front cleaning box 2 is supported by the supporting spring 22 and is in an eight-shaped shape facing the discharge hopper 17. When the injection molded parts enter the front cleaning box 2 under the conveyor belt, the injection molded parts squeeze the positioning plate 21 toward the inner wall direction on both sides of the front cleaning box 2, so that the positioning plate 21 compresses the supporting spring 22, and the eight-shaped positioning plate 21 is opened, and the injection molded parts pass between the opened positioning plates 21. At the same time, the injection molded parts are guided by the positioning plates 21 to the middle of the feeding conveyor belt 15 to facilitate the subsequent flipping. After the injection molded parts pass through the front cleaning box 2, the positioning plate 21 loses the pressure provided by the injection molded parts, and the compressed supporting spring 22 pushes the positioning plate 21 to reset, so that the opened positioning plate 21 is restored to the eight-shaped shape.

[0038] The difference from the above embodiment is that the flipping assembly 3 also includes a driving motor 32 and a fixed seat 33, one end of the flipping shaft 31 is coaxially fixedly connected with a worm gear 311, the worm gear 311 is located on one side of the driving ring 36, the driving motor 32 is fixedly installed on one side of the detection platform 1, the output shaft of the driving motor 32 is coaxially fixedly connected with a worm 321, the worm gear 311 is matched on the worm 321, the fixed seat 33 is fixedly installed on the flipping shaft 31, and a driving cylinder 331 is provided in the middle of both sides of the fixed seat 33, the output end of the driving cylinder 331 is fixedly connected to one side of the clamping baffle 34, and the two ends of the flipping shaft 31 are also fixedly connected with a clamping rack 332, and the clamping rack 332 is located on both sides of the driving cylinder 331.

[0039] Among them, when the flip assembly 3 is not started, the driving cylinders 331 on both sides of the fixed seat 33 are respectively oriented towards the direction of the loading conveyor belt 15 and the unloading conveyor belt 16, and the clamping baffle 34 is retracted into the discharge hopper 17 through its output shaft. At this time, the clamping claws 351 on the clamping baffle 34 are in an open state. When the front of the injection molded part passes the detection, the driving cylinder 331 corresponding to the loading conveyor belt 15 will extend its output shaft to drive the clamping baffle 34 to approach the loading conveyor belt 15, and block the injection molded part moving toward the discharge hopper 17. At the same time, the clamping claws 351 on the clamping baffle 34 are closed to clamp the injection molded part. Then the driving motor 32 is started, and the worm gear 311 is driven to rotate through the worm 321. After the worm gear 311 drives the flip shaft 31 to rotate 180 degrees, the driving motor 32 stops working. At this time, the driving cylinders 331 on both sides of the fixed seat 33 are switched in position. The next injection molded part also passes the detection head 13 on the feeding conveyor 15, and the driving cylinder 331 holding the injection molded part begins to retract the clamping baffle 34. During the retraction process, the clamping claw 351 on the clamping baffle 34 opens to place the clamped injection molded part onto the feeding conveyor 15. Afterwards, if the next injection molded part passes the detection, the driving cylinder 331 toward the feeding conveyor 15 will extend the clamping baffle 34, so that the clamping claw 351 clamps the injection molded part, and then the driving motor 32 is started again to drive the flip shaft 31 to flip 180 degrees. If the injection molded part does not pass the detection, the driving cylinder 331 toward the feeding conveyor 15 will not extend the clamping baffle 34, and the driving motor 32 will not start. When there is an injection molded part that passes the detection, the driving cylinder 331 and the driving motor 32 will be started again, and this cycle will be repeated until all the injection molded parts in this batch have completed the detection.

[0040] The difference from the above embodiment lies in that a driving groove 341 is provided on the other side of the clamping baffle 34, a threaded rod 342 is rotatably installed in the driving groove 341, the threads on both ends of the threaded rod 342 are in opposite directions, and the ends of the threaded rod 342 on both sides extend out from the driving groove 341, a clamping gear 343 is coaxially fixedly connected to the extended end of the threaded rod 342, the clamping gear 343 is meshed on the clamping rack 332, two sliding members 35 are slidably installed in the driving groove 341, the two sliding members 35 are respectively assembled on the two ends of the threaded rod 342 by threads, a clamping claw 351 is fixedly connected to one side of the sliding member 35, and the clamping claw 351 extends out from the driving groove 341.

[0041] Among them, when the driving cylinder 331 extends out of the clamping baffle 34, the clamping baffle 34 pushes the clamping gear 343 on the threaded rod 342 to rotate on the clamping rack 332, so that the clamping gear 343 drives the threaded rod 342 to rotate in the forward direction, and the sliding members 35 on both ends of the threaded rod 342 move the clamping claw 351 to the middle of the clamping baffle 34 to close, thereby clamping the injection molded part. When the driving cylinder 331 retracts the clamping baffle 34, the clamping baffle 34 pulls the clamping gear 343 on the threaded rod 342 to rotate on the clamping rack 332, so that the clamping gear 343 drives the threaded rod 342 to rotate in the opposite direction, and the sliding members 35 on the threaded rod 342 move the clamping claw 351 to both sides of the clamping baffle 34, thereby opening the closed clamping claw 351 and putting down the injection molded part.

[0042] The difference from the above embodiment is that the turntable 42 is rotatably mounted on one inner wall of the reverse cleaning box 4, and an arc groove 41 is provided on this side of the reverse cleaning box 4, the arc groove 41 corresponds to the rotation trajectory of the turntable 42, and a fan gear 421 is fixedly connected to the lower side of the turntable 42.

[0043] Among them, when the injection molded part enters the back side cleaning box 4, the driving component 5 drives the turntable 42 to rotate through the fan gear 421, so that the air nozzle 6 on the turntable 42 moves synchronously with the injection molded part in the back side cleaning box 4. During the movement, the air nozzle 6 sprays air flow toward the back side of the injection molded part to blow away the dirt on it. When the injection molded part leaves the back side cleaning box 4, the driving component 5 drives the turntable 42 to rotate in the opposite direction and return to its original position through the fan gear 421, and then works again after the next injection molded part enters the back side cleaning box 4.

[0044] The difference from the above embodiment is that the driving assembly 5 includes a push rod 51, one side of the lower end of the push rod 51 is fixedly connected with a protrusion 511, one end of the protrusion 511 abuts against the driving ring 36, and a reset spring 52 is fixedly connected between the other side of the push rod 51 and the inner wall of the reverse cleaning box 4, and the reset spring 52 pushes the protrusion 511 on the push rod 51 to abut against the driving ring 36, and a reset rack 53 is fixedly connected to the upper end of the push rod 51, and the sector gear 421 is meshed with the reset rack 53.

[0045] When the flip assembly 3 does not bring the injection molded part into the back cleaning box 4, the protruding portion of the drive ring 36 abuts against the protrusion 511, pushing the protrusion 511 into the back cleaning box 4, so that the protrusion 511 pushes the push rod 51 to move to the end of the back cleaning box 4 away from the flip shaft 31, and compresses the return spring 52. When the flip assembly 3 brings the injection molded part into the back cleaning box 4, the contact portion between the drive ring 36 and the protrusion 511 changes from the protruding portion to the concave portion, so that the return spring 52 recovers its deformation and pushes the push rod 51 toward the back cleaning box 4 close to the flip shaft 31. 1 moves, so that the protrusion 511 extends out of the reverse cleaning box 4 and contacts the recessed part of the driving ring 36. During the movement of the push rod 51, the reset rack 53 is pulled to move in the same direction, driving the sector gear 421 to rotate. As the driving ring 36 continues to rotate, the contact portion between the driving ring 36 and the protrusion 511 changes from the recessed portion to the protruding portion, pushing the protrusion 511 into the reverse cleaning box 4 again, driving the push rod 51 to move toward the end of the reverse cleaning box 4 away from the flip shaft 31, so that the push rod 51 pushes the sector gear 421 to move in the opposite direction, and compresses the reset spring 52 again.

[0046] The difference from the above embodiment is that an air pump 14 is provided at the bottom of the testing table 1, and the air pump 14 is fixedly connected to the input end of the air pipeline 141. The output end of the air pipeline 141 is divided into two ends. One end of the air pipeline 141 is fixedly connected to the air nozzle 6 in the front cleaning box 2, and the other end of the air pipeline 141 passes through the arc groove 41 and is fixedly connected to the air nozzle 6 on the turntable 42. When the turntable 42 rotates, the air pipeline 141 is driven to move in the arc groove 41.

[0047] The air pump 14 delivers the airflow to the air nozzles 6 in the front cleaning box 2 and the back cleaning box 4 through the air delivery pipe 141 . When the turntable 42 rotates, the air delivery pipe 141 thereon is driven to move in the arc groove 41 .

[0048] The difference from the above-mentioned embodiment is that two dust suction devices 7 are arranged on the testing platform 1 , and dust suction ports 71 are opened on the sides of the front cleaning box 2 and the back cleaning box 4 , and the dust suction ports 71 are connected to the dust suction devices 7 .

[0049] When the air nozzle 6 blows up dirt, the dust suction device 7 absorbs the blown-up dirt through the dust suction port 71 .

[0050] Embodiment 2:

[0051] The difference from the above embodiment is that: electric slide rails 11 are fixedly installed on both sides of the detection platform 1, telescopic arms 12 are slidably installed on the electric slide rails 11, and the detection head 13 is fixedly connected to the telescopic arms 12.

[0052] When the position of the detection head 13 needs to be adjusted, the telescopic arm 12 is extended and retracted to adjust the height of the detection head 13 , and the electric slide rail 11 drives the telescopic arm 12 to slide thereon to adjust the lateral position of the detection head 13 .

[0053] The difference from the above embodiment is that the rejecting assembly 8 includes a rejecting cylinder 81 and a push plate 82 , the rejecting cylinder 81 is arranged on one side of the discharge end of the inspection table 1 , and the push plate 82 is fixedly connected to the output end of the rejecting cylinder 81 .

[0054] When the rejecting assembly 8 performs rejecting, the rejecting cylinder 81 pushes the push plate 82 to move to the other side of the inspection platform 1 , and pushes the defective injection molded parts on the unloading conveyor belt 16 out of the inspection platform 1 .

[0055] Working principle: When in use, the device is first started, and the air pump 14 delivers the airflow to the air nozzles 6 in the front cleaning box 2 and the back cleaning box 4 through the air delivery pipeline 141, and then the injection molded parts to be tested are placed one by one from the loading end of the test table 1 onto the loading conveyor 15. The loading conveyor 15 carries the injection molded parts through the front cleaning box 2 first. When no injection molded parts pass through the front cleaning box 2, the positioning plate 21 in the front cleaning box 2 is supported by the support spring 22 and is in an eight-shaped shape facing the discharge hopper 17. When the injection molded parts are transported by the conveyor belt and enter the front cleaning box 2, The injection molded part squeezes the positioning plate 21 toward the inner wall direction of both sides of the front cleaning box 2, so that the positioning plate 21 compresses the supporting spring 22, and the positioning plate 21 in the shape of an eight is opened, and the injection molded part passes between the opened positioning plates 21. At the same time, the injection molded part is guided by the positioning plate 21 to the middle of the feeding conveyor belt 15, which is convenient for subsequent flipping. The air jet 6 sprays air to blow away the dirt on the front of the injection molded part. After the injection molded part passes through the front cleaning box 2, the positioning plate 21 loses the pressure provided by the injection molded part, and the compressed supporting spring 22 pushes the positioning plate 21 to reset, so that the opened positioning plate 21 returns to the shape of an eight;

[0056] After passing through the front cleaning box 2, the injection molded part comes under the detection head 13, and the detection head 13 takes a photo of the front of the injection molded part for detection. When the detection head 13 detects that there is a defect on the front of the injection molded part, the flip assembly 3 is not started, and the driving cylinders 331 on both sides of the fixed seat 33 retract the clamping baffle 34 into the discharge hopper 17. At this time, the clamping claws 351 on the clamping baffle 34 are open, so that the injection molded part with defects on the front is transported into the discharge hopper 17 by the feeding conveyor 15, and the discharge hopper 17 discharges it from the detection table 1. When the front of the injection molded part passes the detection, the flip assembly 3 is started, and the injection molded part enters the discharge hopper 17. Before the hopper 17, the driving cylinder 331 extends the clamping baffle 34 to catch it. In the process of extending the clamping baffle 34, the clamping baffle 34 pushes the clamping gear 343 on the threaded rod 342 to rotate on the clamping rack 332, so that the clamping gear 343 drives the threaded rod 342 to rotate forward, and the sliding member 35 matched with the threaded rod 342 slides with the clamping claw 351 to the middle of the clamping baffle 34 to close, thereby clamping the injection molded part, and then the driving motor 32 is started, and the worm gear 311 is driven to rotate through the worm 321, so that the worm gear 311 drives the flip shaft 31 to rotate 180 After the speed reaches the set value, the driving motor 32 stops working. At this time, the driving cylinders 331 on both sides of the fixing seat 33 are switched. The next injection molded part also passes the detection head 13 on the feeding conveyor 15. At this time, the driving cylinder 331 holding the injection molded part begins to retract the clamping baffle 34. The clamping baffle 34 pulls the clamping gear 343 on the threaded rod 342 to rotate on the clamping rack 332, so that the clamping gear 343 drives the threaded rod 342 to rotate in the opposite direction. The sliding member 35 on the threaded rod 342 slides with the clamping claw 351 to both sides of the clamping baffle 34, and the injection molded part is released and put into the feeding conveyor. The next injection molded part passes the inspection, and then the driving cylinder 331 toward the feeding conveyor belt 15 will extend the clamping baffle 34, so that the clamping claw 351 clamps the injection molded part, and then the driving motor 32 is started again to drive the flip shaft 31 to flip 180 degrees. If the injection molded part does not pass the inspection, the driving cylinder 331 toward the feeding conveyor belt 15 will not extend the clamping baffle 34, and the driving motor 32 will not be started. When there is an injection molded part that passes the inspection, the driving cylinder 331 and the driving motor 32 will be started again, and this cycle will be repeated until all the injection molded parts in this batch have completed the inspection.

[0057] When the flip assembly 3 does not bring the injection molded parts into the reverse cleaning box 4, the protruding portion of the drive ring 36 abuts against the protrusion 511, pushing the protrusion 511 into the reverse cleaning box 4, so that the protrusion 511 pushes the push rod 51 to move to the end of the reverse cleaning box 4 away from the flip shaft 31 and compresses the reset spring 52. When the flip assembly 3 brings the injection molded parts into the reverse cleaning box 4, the contact portion between the drive ring 36 and the protrusion 511 changes from the protruding portion to the recessed portion, so that the reset spring 52 recovers its deformation, pushing the push rod 51 to move toward the end of the reverse cleaning box 4 close to the flip shaft 31, so that the protrusion 511 extends out of the reverse cleaning box 4 and abuts against the recessed portion of the drive ring 36. During the movement of the push rod 51, the reset rack 53 is pulled to move in the same direction, driving the fan gear 421 to rotate, thereby driving the turntable 4 2 rotates, so that the air nozzle 6 on the turntable 42 moves synchronously with the injection molded part in the back cleaning box 4. During the movement, the air nozzle 6 sprays air toward the back side of the injection molded part. As the driving ring 36 continues to rotate, the contact portion between the driving ring 36 and the protrusion 511 changes from a concave portion to a convex portion, and the protrusion 511 is pushed into the back cleaning box 4 again, driving the push rod 51 to move toward the end of the back cleaning box 4 away from the flip shaft 31, so that the push rod 51 pushes the fan gear 421 to move in the opposite direction, driving the turntable 42 to rotate in the opposite direction and return to its original position, and waits for the next injection molded part to enter the back cleaning box 4 to work again, and compress the return spring 52 again, and after the air nozzles 6 in the front cleaning box 2 and the back cleaning box 4 blow up the dirt on the front and back sides of the injection molded part, the dust suction device 7 absorbs the blown dirt through the dust suction port 71;

[0058] The unloading conveyor belt 16 transports the injection molded parts to another inspection head 13, so that the inspection head 13 takes pictures of the back side of the injection molded parts for inspection. When there are defects on the back side of the injection molded parts, the rejection cylinder 81 of the rejection assembly 8 pushes the push plate 82 to move to the other side of the inspection table 1, and pushes the defective injection molded parts on the unloading conveyor belt 16 out of the inspection table 1. When the back side of the injection molded parts also passes the inspection, the injection molded parts will be transported out of the inspection table 1 by the unloading conveyor belt 16 and enter the next production process. When the position of the inspection head 13 needs to be adjusted during the inspection, the telescopic arm 12 can be retracted to adjust the height of the inspection head 13. At the same time, the electric slide rail 11 drives the telescopic arm 12 to slide thereon to adjust the lateral position of the inspection head 13.

[0059] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An injection molded part surface defect detection device, comprising a detection table (1), characterized in that: The detection platform (1) is provided with a front cleaning box (2), a turning assembly (3), a back cleaning box (4) and a rejecting assembly (8); the detection platform (1) comprises a loading conveyor belt (15) and a unloading conveyor belt (16); a discharge hopper (17) is provided between the loading conveyor belt (15) and the unloading conveyor belt (16); and detection heads (13) are provided on the sides of the loading conveyor belt (15) and the unloading conveyor belt (16); The flip assembly (3) comprises a flip shaft (31) and a clamping baffle (34). The flip shaft (31) is rotatably arranged above the discharge hopper (17). One end of the flip shaft (31) is connected to a driving ring (36). The clamping baffle (34) is installed on both sides of the flip shaft (31). The flip shaft (31) can drive the driving ring (36) and the clamping baffle (34) to rotate. A rotating disk (42) and a driving assembly (5) are arranged in the reverse cleaning box (4). The driving assembly (5) is fitted between the turntable (42) and the drive ring (36). When the drive ring (36) rotates, it drives the drive assembly (5), so that the drive assembly (5) drives the turntable (42) to reciprocate. Both the front cleaning box (2) and the back cleaning box (4) are provided with air nozzles (6), and the air nozzles (6) in the back cleaning box (4) are connected to the turntable (42). The rotating turntable (42) drives the air nozzles (6) to follow the movement of the flipped injection molded part.

2. The device for detecting surface defects of injection molded parts according to claim 1, characterized in that: The front cleaning box (2) comprises two positioning plates (21), one end of the two positioning plates (21) are rotatably connected to the inner walls of the front cleaning box (2) at both sides close to the feeding end of the detection platform (1), and are located at the bottom of the front cleaning box (2), and a support spring (22) is fixedly connected between the other end of the positioning plate (21) and the inner wall of the front cleaning box (2), and the support spring (22) pushes the positioning plate (21) to extend to the middle of the front cleaning box (2).

3. The device for detecting surface defects of injection molded parts according to claim 2, characterized in that: The flip assembly (3) further comprises a driving motor (32) and a fixing seat (33); one end of the flip shaft (31) is coaxially fixedly connected to a worm gear (311); the worm gear (311) is located on one side of the driving ring (36); the driving motor (32) is fixedly mounted on one side of the detection platform (1); a worm (321) is coaxially fixedly connected to the output shaft of the driving motor (32); the worm gear (311) is engaged with the worm gear (321); the fixing seat (33) is fixedly mounted on the flip shaft (31); driving cylinders (331) are provided at the middle of both sides of the fixing seat (33); the output end of the driving cylinder (331) is fixedly connected to one side of the clamping baffle (34); and clamping racks (332) are also fixedly connected to both ends of the flip shaft (31); the clamping racks (332) are located on both sides of the driving cylinder (331).

4. The device for detecting surface defects of injection molded parts according to claim 3, characterized in that: A driving groove (341) is provided on the other side of the clamping baffle (34), and a threaded rod (342) is rotatably installed in the driving groove (341). The threads on the two ends of the threaded rod (342) are in opposite directions, and the ends of the threaded rod (342) on both sides extend out from the driving groove (341). A clamping gear (343) is coaxially fixedly connected to the extended end of the threaded rod (342), and the clamping gear (343) is engaged with the clamping rack (332). Two sliding members (35) are slidably installed in the driving groove (341), and the two sliding members (35) are respectively assembled at the two ends of the threaded rod (342) through threads. A clamping claw (351) is fixedly connected to one side of the sliding member (35), and the clamping claw (351) extends out from the driving groove (341).

5. The device for detecting surface defects of injection molded parts according to claim 4, characterized in that: The rotating disk (42) is rotatably mounted on an inner wall of one side of the reverse cleaning box (4), and an arc groove (41) is provided on this side of the reverse cleaning box (4), wherein the arc groove (41) corresponds to the rotation track of the rotating disk (42), and a sector gear (421) is fixedly connected to the lower side of the rotating disk (42).

6. The device for detecting surface defects of injection molded parts according to claim 5, characterized in that: The driving assembly (5) comprises a push rod (51), one side of the lower end of the push rod (51) is fixedly connected with a protrusion (511), one end of the protrusion (511) abuts against the driving ring (36), a reset spring (52) is fixedly connected between the other side of the push rod (51) and the inner wall of the reverse cleaning box (4), the reset spring (52) pushes the protrusion (511) on the push rod (51) to abut against the driving ring (36), the upper end of the push rod (51) is fixedly connected with a reset rack (53), and the sector gear (421) is meshed with the reset rack (53).

7. The device for detecting surface defects of injection molded parts according to claim 6, characterized in that: An air pump (14) is arranged at the bottom of the detection table (1). The air pump (14) is fixedly connected to the input end of the air pipeline (141). The output end of the air pipeline (141) is divided into two ends. One end of the air pipeline (141) is fixedly connected to the air nozzle (6) in the front cleaning box (2). The other end of the air pipeline (141) passes through the arc groove (41) and is fixedly connected to the air nozzle (6) on the turntable (42). When the turntable (42) rotates, it drives the air pipeline (141) to move in the arc groove (41).

8. The device for detecting surface defects of injection molded parts according to claim 7, characterized in that: The detection platform (1) is provided with two dust suction devices (7), and the sides of the front cleaning box (2) and the back cleaning box (4) are both provided with dust suction ports (71), and the dust suction ports (71) are connected to the dust suction devices (7).

9. The device for detecting surface defects of injection molded parts according to claim 1, characterized in that: Electric slide rails (11) are fixedly mounted on both sides of the detection platform (1), telescopic arms (12) are slidably mounted on the electric slide rails (11), and the detection head (13) is fixedly connected to the telescopic arms (12).

10. The device for detecting surface defects of injection molded parts according to claim 9, characterized in that: The rejecting assembly (8) comprises a rejecting cylinder (81) and a push plate (82); the rejecting cylinder (81) is arranged on one side of the discharge end of the inspection platform (1); and the push plate (82) is fixedly connected to the output end of the rejecting cylinder (81).

Images