Dry ice cleaning machine

Abstract

The invention relates to the technical field of mechanical equipment, in particular to a dry ice cleaning machine which comprises a feeding mechanism, a cleaning mechanism, a discharging mechanism and a conveying line, the feeding mechanism and the discharging mechanism are arranged at the two ends of the conveying line in the X-axis direction, and the cleaning mechanism is arranged between the feeding mechanism and the discharging mechanism. Comprising a dry ice machine, a spraying assembly and a waste adsorption assembly, the spraying assembly and the waste adsorption assembly are oppositely arranged on the two sides of a conveying line in the Y-axis direction, so that the spraying assembly is used for spraying dry ice to blow off a to-be-removed part of a workpiece and enable the to-be-removed part to form waste, and the waste adsorption assembly is used for adsorbing the waste in a negative pressure suction mode. And particularly, for a welding tip of a pin of an electronic plug connector, the tip is removed through dry ice to realize cleaning of the workpiece, so that the phenomenon that the product performance is influenced due to breakage in the subsequent use process can be prevented, and the reliability of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to a dry ice cleaning machine. Background Art

[0002] Electronic connectors generally include a substrate and pins welded on the substrate. When welding, the pins will be stretched due to the movement of the welding head. After the welding material cools, a thin and long tip will be left. In the subsequent use process, the tip may be broken by stress. In some more precise products, the broken tip becomes an impurity and affects the product performance, which is not conducive to the stable operation of the product. Summary of the invention

[0003] The object of the present invention is to provide a dry ice cleaning machine to solve the problem that the welding tip of the electronic connector is broken and affects the product performance.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a dry ice cleaning machine, comprising a loading mechanism, a cleaning mechanism, an unloading mechanism and a conveyor line. On a horizontal plane, the conveying direction of the conveyor line is defined as the X-axis, and the direction perpendicular to the X-axis is defined as the Y-axis. The loading mechanism and the unloading mechanism are arranged at both ends of the conveyor line along the X-axis direction. The cleaning mechanism is arranged between the loading mechanism and the unloading mechanism for cleaning the workpieces on the conveyor line. The cleaning mechanism comprises a dry ice machine, a spraying assembly and a waste adsorption assembly. The spraying assembly and the waste adsorption assembly are relatively arranged on both sides of the conveyor line along the Y-axis direction, so that the spraying assembly is used to spray dry ice to blow off the part to be removed of the workpiece and form waste at the part to be removed, and the waste adsorption assembly is used to adsorb the waste by negative pressure suction.

[0005] In one embodiment, the spraying assembly includes a nozzle for spraying dry ice, and the waste adsorption assembly includes a suction nozzle and a shielding cover, the suction nozzle is used to suck the waste, the nozzle is arranged opposite to the suction nozzle, and the shielding cover is arranged above the nozzle and the suction nozzle to prevent the waste from splashing.

[0006] In one embodiment, the shielding cover is a semi-enclosed structure.

[0007] In one embodiment, two nozzles are provided, and the two nozzles are arranged at intervals along the X-axis direction. There are two suction nozzles and two shielding covers respectively, and the suction nozzles and the shielding covers are respectively provided corresponding to the nozzles.

[0008] In one embodiment, the conveying line includes two parallel tracks with a gap between the two tracks, and a waste collection box is provided below the conveying line.

[0009] In one embodiment, the feeding mechanism includes a feeding lifting module and a feeding bin, and the direction perpendicular to the X-axis and the Y-axis is defined as the Z-axis. The feeding bin is provided with multiple layers of feeding racks arranged at intervals along the Z-axis, and each of the feeding racks is used to place a group of workpieces. The feeding lifting module is used to control the feeding bin to lift and lower along the Z-axis so that any of the feeding racks can be docked with the conveyor line.

[0010] The unloading mechanism includes an unloading lifting module and an unloading bin. The unloading bin is provided with multiple layers of unloading racks arranged at intervals along the Z-axis direction. Each of the unloading racks is used to place a group of workpieces. The unloading lifting module is used to control the unloading bin to lift and lower along the Z-axis so that any of the unloading racks can be docked with the conveyor line.

[0011] In one embodiment, it further includes a loading and pushing mechanism, the loading and pushing mechanism includes a loading and pushing plate and a loading and pushing cylinder, the loading and pushing cylinder is used to drive the loading and pushing plate to move along the X-axis direction, and the loading and pushing plate is used to extend into the loading bin to push the workpiece placed on the loading rack to the conveyor line;

[0012] It also includes a material unloading pushing mechanism, which includes a material unloading pushing plate, a first material unloading pushing cylinder and a second material unloading pushing cylinder, the first material unloading pushing cylinder is connected to the second material unloading pushing cylinder, the second material unloading pushing cylinder is connected to the material unloading pushing plate, the first material unloading pushing cylinder is used to drive the second material unloading pushing cylinder and the material unloading pushing plate to move along the Y-axis direction, and the second material unloading pushing cylinder is used to drive the material unloading pushing plate to move along the X-axis direction to push the workpiece on the conveying line to the material unloading bin.

[0013] In one embodiment, a flexible first material stopper is provided between the loading bin and the conveying line, and a flexible second material stopper is provided between the unloading bin and the conveying line. The first material stopper is used to prevent the waste from splashing into the loading bin, and the second material stopper is used to prevent the waste from splashing into the unloading bin.

[0014] In one embodiment, the workpiece is an electronic connector, the portion to be removed is a soldering tip of a pin, and a plurality of the electronic connectors are placed on a tooling board at intervals along the X-axis direction to form a group.

[0015] In one embodiment, the loading bin and the unloading bin are storage bins, each of which is provided with a bin door, and the loading lifting module and the unloading lifting module are respectively provided with a platform for placing the storage bin, so that the storage bin is placed on the platform and serves as the loading bin or the unloading bin.

[0016] The beneficial effects of the present invention are:

[0017] 1. The spray assembly of the cleaning mechanism of the present invention can spray dry ice to remove the part to be removed from the workpiece, and collect the removed waste in the waste adsorption assembly through negative pressure suction to prevent the waste from splashing and damaging the workpiece. In particular, for the welding tips of the pins of electronic connectors, the tips are removed by dry ice to achieve the cleaning of the workpiece, which can prevent them from breaking during subsequent use and affecting product performance, thereby improving product reliability.

[0018] 2. The loading mechanism and the unloading mechanism are arranged at both ends of the conveyor line along the X-axis, so that the workpiece is interrupted by the dry ice airflow during transportation. The ejection component and the waste adsorption component are arranged relatively on both sides of the conveyor line along the Y-axis, so that the waste can be adsorbed and collected along the direction of the airflow (which is also the movement direction of most waste). The layout is based on the conveyor line as the center and fully utilizes the space around it. The overall layout is more reasonable, and the removal efficiency of the part to be removed of the workpiece can be higher.

[0019] 3. The setting of the shielding cover can prevent the waste from splashing around under the action of the dry ice airflow, and avoid the splashing waste from falling on the cleaned workpiece and affecting the subsequent performance of the workpiece.

[0020] 4. Two nozzles, two suction nozzles and two shielding covers form two groups of mechanisms for cleaning and collecting waste. A single workpiece can be cleaned twice to prevent incomplete cleaning at one time and improve the cleaning qualification rate.

[0021] 5. The loading bin is lifted up and down along the Z axis to feed materials, and the unloading bin is lifted up and down along the Z axis to receive the workpieces that have been cleaned. The vertical space of the dry ice cleaning machine is utilized to further optimize the spatial layout of the dry ice cleaning machine and improve the efficiency of loading and unloading.

[0022] 6. The loading and unloading of materials are respectively pushed by the loading and unloading pushing plates, and the loading and unloading bins are respectively provided with multi-layer loading and unloading racks, so as to realize automatic loading and unloading and reduce the workload of operators.

[0023] 7. The loading silo and unloading silo are formed by placing the storage silo on the platform. During the loading and unloading process, the storage silo can be directly placed on the platform, reducing the steps of transporting the workpiece during the loading and unloading process and improving the cleaning efficiency.

[0024] 8. The spray assembly of the cleaning mechanism sprays out a dry ice airflow, which can not only use its lower temperature to make the welding waste more brittle and be blown off, but also blow other debris on the surface of the workpiece away from the workpiece to achieve the purpose of thorough cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a stereogram of an embodiment of the present invention.

[0026] Figure 2 It is a three-dimensional diagram of the internal structure of an embodiment of the present invention.

[0027] Figure 3 It is another stereoscopic diagram of the internal structure of an embodiment of the present invention.

[0028] Figure 4 It is a three-dimensional diagram of the structure of the ejection component and the waste adsorption component according to an embodiment of the present invention.

[0029] Figure 5 It is a side view of the structure of the ejection component and the waste adsorption component according to an embodiment of the present invention.

[0030] Figure 6 It is a three-dimensional diagram of a feeding mechanism according to an embodiment of the present invention.

[0031] Figure 7 It is a stereoscopic diagram of a blanking mechanism according to an embodiment of the present invention.

[0032] Figure 8 It is a schematic diagram of the feeding state of an embodiment of the present invention.

[0033] Wherein: 1 loading mechanism, 11 loading lifting module, 12 loading bin, 121 loading rack, 2 unloading mechanism, 21 unloading lifting module, 22 unloading bin, 221 unloading rack, 3 conveyor line, 30 track, 4 cleaning mechanism, 41 dry ice machine, 42 spray assembly, 421 nozzle, 422 support rod, 423 first adjustment block, 424 second adjustment block, 43 waste adsorption assembly, 431 suction nozzle, 432 shielding cover, 433 waste collection box, 4331 waste hole, 5 loading pushing mechanism, 51 loading pushing plate, 52 loading pushing cylinder, 6 unloading pushing mechanism, 61 unloading pushing plate, 62 first unloading pushing cylinder, 63 second unloading pushing cylinder, 7 storage bin, 71 bin door, 8 first blocking part, 9 second blocking part, 10 rack housing, 100 electronic connector, 101 pin. DETAILED DESCRIPTION

[0034] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0035] See also Figures 1 to 8As shown, the present invention discloses a dry ice cleaning machine, comprising a feeding mechanism 1, a cleaning mechanism 4, a feeding mechanism 2 and a conveyor line 3, wherein the feeding mechanism 1 and the feeding mechanism 2 are arranged outside the frame housing 10, and the cleaning mechanism 4 and the conveyor line 3 are arranged inside the frame housing 10. On a horizontal plane, the conveying direction of the conveyor line 3 is defined as the X-axis, and the direction perpendicular to the X-axis is defined as the Y-axis. The feeding mechanism 1 and the feeding mechanism 2 are arranged at both ends of the conveyor line 3 along the X-axis direction, and the cleaning mechanism 4 is arranged between the feeding mechanism 1 and the feeding mechanism 2 to clean the workpiece on the conveyor line 3. The cleaning mechanism 4 comprises a dry ice machine 41, a spraying assembly 42 and a waste adsorption assembly 43, and the spraying assembly 42 and the waste adsorption assembly 43 are arranged on both sides of the conveyor line 3 along the Y-axis direction, so that the spraying assembly 42 is used to spray dry ice to blow off the part to be removed of the workpiece and form waste at the part to be removed, and the waste adsorption assembly 43 is used to adsorb waste by negative pressure suction.

[0036] The workpiece of this embodiment is an electronic connector 100, which has a pin 101 welded on a substrate. The part to be removed is the tip formed during the pin welding process. The tip is usually formed by solder. Under the action of dry ice, the solder temperature decreases and becomes brittle. The dry ice airflow can easily break it to form granular waste, preventing the tip from breaking during the subsequent use of the electronic connector and affecting the performance of the product with the electronic connector. In particular, for products with high precision requirements, broken but not removed waste or other impurities will reduce the control accuracy of the product. Therefore, the present invention can ensure the performance of the product and improve the reliability of the product by pre-blowing and removing the easily broken waste. In other embodiments, the workpiece can also be other products, such as metal welded parts with welding material tips that need to be removed.

[0037] See also Figures 3 to 5As shown, the ejection assembly 42 includes a nozzle 421 for ejecting dry ice, and the nozzle 421 is arranged on a support rod 422 on one side of the conveyor line 3, and the nozzle 421 is connected to the support rod 422 through a first adjustment block 423 and a second adjustment block 424. The nozzle 421 is arranged on the first adjustment block 423, and the first adjustment block 423 is arranged on the second adjustment block 424 through a rotating shaft. The first adjustment block 423 and the second adjustment block 424 form a rotation connection, and the rotation connection has a certain resistance, so that the first adjustment block 423 can rotate relative to the second adjustment block 424 when subjected to torsion, and can be fixed relative to the second adjustment block 424 when not subjected to torsion, thereby adjusting the ejection angle of the nozzle 421. The second adjustment block 424 is slidably disposed on the support rod 422. The connection between the second adjustment block 424 and the support rod 422 is tight and has a certain resistance, so that the second adjustment block 424 can slide along the support rod 422 when subjected to the force of the operator, and can be fixed relative to the support rod 422 when subjected only to gravity, thereby adjusting the spray height of the nozzle 421. By operating the first adjustment block 423 and the second adjustment block 424, the spray height and spray angle of the nozzle 421 are adjusted to adapt to workpieces of different specifications.

[0038] The waste adsorption assembly 43 includes a suction nozzle 431 and a shielding cover 432. The suction nozzle 431 is connected to a negative pressure suction machine for sucking waste through negative pressure. The nozzle 421 is arranged opposite to the suction nozzle 431. The shielding cover 432 is arranged above the nozzle 421 and the suction nozzle 431 to prevent waste from splashing. Since the waste to be removed is a hard welding material, it may splash under the action of the dry ice airflow, and such waste splashing may scratch the surface of the workpiece or remain in the dead corner of the workpiece. Therefore, the shielding cover 432 arranged above the nozzle 421 and the suction nozzle 431 can reduce the range of waste splashing, which is conducive to the suction nozzle 431 to absorb it through negative pressure suction.

[0039] The space between the nozzle 421 and the suction nozzle 431 is used for the movement of the workpiece, so the shielding cover 432 can block a limited range. If the shielding cover 432 blocks too much, it will affect the movement of the workpiece. In this embodiment, the shielding cover 432 is set as a semi-enclosed structure, which can prevent waste from splashing to the upper area. The conveyor line 3 includes two parallel tracks 30, and there is a gap between the two tracks 30. A waste collection box 433 is provided below the conveyor line 3. Some waste that is not sucked by the suction nozzle 431 will splash downward. The waste collection box 433 is arranged between the two tracks 30 of the conveyor line 3, and the gap between the two tracks 30 is used to further collect waste, thereby reducing the difficulty of waste collection. In addition, the lower middle part of the waste collection box 433 is conducive to the waste moving to the middle part under the action of gravity, and falling into the waste container (the waste container is not shown in the figure) from the waste hole 4331 in the middle. The waste container is also connected to the suction nozzle 431, so that the waste sucked by the suction nozzle 431 is collected in the waste container.

[0040] The present invention uses a dry ice airflow to blow off the welding tip on the electronic connector 100, and adsorbs and collects the blown-off welding tip under the combined action of the dry ice airflow and negative pressure suction. At this time, dust or other impurities adhering to the surface of the workpiece will also be blown away from the surface of the workpiece under the action of the airflow, thereby achieving the purpose of cleaning the workpiece. In order to improve the reliability of workpiece cleaning, two nozzles 421 are provided, and the two nozzles 421 are arranged at intervals along the X-axis direction. There are two suction nozzles 431 and shielding covers 432, respectively, and the suction nozzles 431 and shielding covers 432 are respectively provided corresponding to the nozzles 421. The two nozzles 421, the two suction nozzles 431 and the two shielding covers 432 form two groups of mechanisms for cleaning and collecting waste materials. For a single workpiece, it can be cleaned twice, preventing incomplete cleaning at one time and improving the qualified rate of cleaning.

[0041] See also Figures 1 to 8 As shown, the loading mechanism 1 includes a loading lifting module 11 and a loading bin 12, and the direction perpendicular to the X-axis and the Y-axis is defined as the Z-axis. The loading bin 12 is provided with multiple loading racks 121 spaced along the Z-axis, and each loading rack 121 is used to place a group of workpieces. The loading lifting module 11 is used to control the loading bin 12 to lift along the Z-axis so that any loading rack 121 docks with the conveyor line 3, so that the workpieces are moved along the X-axis and conveyed to the conveyor line 3. The unloading mechanism 2 includes an unloading lifting module 21 and an unloading bin 22. The unloading bin 22 is provided with multiple unloading racks 221 spaced along the Z-axis, and each unloading rack 221 is used to place a group of workpieces. The unloading lifting module 21 is used to control the unloading bin 22 to lift along the Z-axis so that any unloading rack 221 docks with the conveyor line 3, so that the workpieces on the conveyor line 3 are moved along the X-axis and conveyed to the unloading rack 221.

[0042] The loading mechanism 1 and the unloading mechanism 2 are arranged at both ends of the conveyor line 3 along the X-axis, so that the workpiece is interrupted by the dry ice airflow during transportation. The ejection component 42 and the waste adsorption component 43 are arranged relatively on both sides of the conveyor line 3 along the Y-axis, so that the waste can be adsorbed and collected along the direction of the airflow (which is also the movement direction of most waste). The layout is made by taking the conveyor line 3 as the center and making full use of the space around it. The overall layout is more reasonable, and the removal efficiency of the part to be removed of the workpiece can be higher. The loading bin 12 is lifted and lowered along the Z-axis to feed the material, and the unloading bin 22 is lifted and lowered along the Z-axis to receive the workpiece after cleaning. The vertical space of the dry ice cleaning machine is used to further optimize the spatial layout of the dry ice cleaning machine, while improving the efficiency of loading and unloading.

[0043] The dry ice cleaning machine also includes a loading and pushing mechanism 5 and a unloading and pushing mechanism 6. The loading and pushing mechanism 5 includes a loading and pushing plate 51 and a loading and pushing cylinder 52. The loading and pushing cylinder 52 is used to drive the loading and pushing plate 51 to move along the X-axis direction. The loading and pushing plate 51 is used to extend into the loading bin 12 to push the workpiece placed on the loading rack 121 to the conveyor line. In this embodiment, multiple electronic connectors 100 are placed on the tooling plate 200 at intervals along the X-axis direction to form a group. Therefore, the loading and pushing plate 51 acts on the tooling plate 200 when pushing the material, and pushes the multiple electronic connectors 100 of the group to the conveyor line 3 by pushing the tooling plate 200.

[0044] The loading and pushing plate 51 of this embodiment extends into the loading bin 12 and acts on the end of the tooling plate 200 away from the conveyor line 3. The tooling plate 200 and the electronic connector 100 are pushed onto the conveyor line 3 by the contraction of the loading and pushing cylinder 52. Combined with the lifting and feeding of the loading bin 12, the middle part of the loading rack 121 should be set as a hollow structure in this embodiment to facilitate the loading and pushing plate 51 and the telescopic rod of the loading and pushing cylinder 52 to pass through the lifting and lowering loading rack 121.

[0045] In other embodiments, the loading push plate 51 may also only extend into the side of the loading bin 12 close to the conveyor line 3, so that the loading push plate 51 acts on the end of the tooling plate 200 close to the conveyor line 3, and the tooling plate 200 and the electronic connector 100 are pulled onto the conveyor line 3 by the contraction of the loading push cylinder 52. In this case, a groove for matching with the loading push plate 51 should be provided at the end of the tooling plate 200 close to the conveyor line 3, so that the end of the loading push plate 51 can be inserted into the groove to pull the tooling plate 200 to move.

[0046] The unloading pushing mechanism 6 includes an unloading pushing plate 61, a first unloading pushing cylinder 62 and a second unloading pushing cylinder 63. The first unloading pushing cylinder 62 is connected to the second unloading pushing cylinder 63, and the second unloading pushing cylinder 63 is connected to the unloading pushing plate 61. The first unloading pushing cylinder 62 is used to drive the second unloading pushing cylinder 63 and the unloading pushing plate 61 to move along the Y-axis direction, and the second unloading pushing cylinder 63 is used to drive the unloading pushing plate 61 to move along the X-axis direction to push the tooling plate 200 and the electronic connector 100 thereon on the conveyor line 3 to the unloading bin 22. The loading and unloading of materials are respectively carried out by pushing the tooling plate 200 by the loading pushing plate 51 and the unloading pushing plate 62, and the loading bin 12 and the unloading bin 22 are respectively provided with multi-layer loading racks 121 and unloading racks 221, so as to realize automatic loading and unloading of materials and reduce the workload of operators.

[0047] In this embodiment, the loading bin 12 and the unloading bin 22 have the same structure, both of which are storage bins 7. The storage bin 7 is provided with a bin door 71. The loading lifting module 11 and the unloading lifting module 21 are respectively provided with a platform for placing the storage bin 7, so that the storage bin 7 is placed on the platform and serves as the loading bin 12 or the unloading bin 22. The loading bin 12 and the unloading bin 22 are respectively formed by placing the storage bin 7 on the platform. During the loading and unloading process, the storage bin 7 can be directly placed on the platform, reducing the steps of handling the workpiece during the loading and unloading process and improving the cleaning efficiency. In other embodiments, the loading bin 12 and the unloading bin 22 can also be fixed bins fixedly arranged on the loading and unloading module 11 and the unloading and unloading module 21.

[0048] Among them, the loading lifting module 11 and the unloading lifting module 21 are respectively rotation-to-linear motion modules composed of a motor and a screw mechanism, and the rotation of the motor is converted into the linear lifting motion of the platform through the screw mechanism. This type of rotation-to-linear motion module is a prior art, and those skilled in the art can select the corresponding specifications according to their needs, and then connect the platform to the screw mechanism to rise and fall with the screw mechanism, which will not be described here.

[0049] See also Figure 2 and Figure 3 As shown, a flexible first stopper 8 is provided between the loading bin 12 and the conveyor line 3, and a flexible second stopper 9 is provided between the unloading bin 22 and the conveyor line 3. The first stopper 8 is used to prevent waste from splashing into the loading bin 12, and the second stopper 9 is used to prevent waste from splashing into the unloading bin 22. The first stopper 8 and the second stopper 9 are respectively configured as flexible structures, which can sag under the action of gravity to form a blocking structure to prevent waste from splashing into the loading bin 12 or the unloading bin 22, and can deform and give way under the push of the tooling plate 200 or the loading push plate 51, so that the workpiece can be smoothly loaded and unloaded.

[0050] See also Figures 1 to 8 As shown, the workflow of the present invention is as follows:

[0051] For loading, the operator places the storage bin 7 containing the workpiece on the platform of the loading lifting module 11 as the loading bin 12. At this time, the platform of the loading lifting module 11 is in a low position, and the door of the storage bin 7 is open; the loading push cylinder 52 drives the loading push plate 51 to extend into the end of the loading bin 12 away from the conveyor line 3, and the loading lifting module 11 rises to drive the loading bin 12 to rise until the loading push plate 51 abuts against the end of the tooling plate 200 located on the topmost loading rack 121 away from the conveyor line 3. The loading push cylinder 52 contracts and drives the loading push plate 51 to move in the direction close to the conveyor line 3 until the tooling plate 200 and the electronic connector 100 push the first stopper 8 away and are moved to the conveyor line 3.

[0052] Cleaning, the tooling plate 200 and the electronic connector 100 move along the conveyor line 3 until the electronic connector 100 is moved between the nozzle 421 of the ejection component 42 and the suction nozzle 431 of the waste adsorption component 43, the dry ice machine 41 is started, and the nozzle 421 sprays dry ice airflow to the electronic connector 100, so that the welding tip of the pin 101 of the electronic connector 100 cools down and increases brittleness, thereby breaking under the action of the dry ice airflow to form waste, and the waste is sucked by the suction nozzle 431 under the action of negative pressure suction, and enters the waste container along the negative pressure pipeline; there is also a part that is not sucked by the suction nozzle 431 and is transferred to the waste collection box 433 under the action of gravity, and falls into the waste container along the waste hole 4331 in the middle. During the cleaning process, the shielding cover 432 can prevent the waste from splashing upwards, and for the waste splashing to both ends, the first blocking part 8 and the second blocking part 9 can prevent it from splashing to the upper material bin 12 and the lower material bin 22. The tooling plate 200 and the electronic connector 100 are continuously moved along the conveyor line 3, and the two nozzles 421 spray dry ice airflow to the electronic connector 100 in turn, which can not only blow off the welding tip of the pin 101 of the electronic connector 100, but also blow away the impurities on the surface of the electronic connector 100, thereby achieving the purpose of using dry ice to clean the electronic connector 100, and the cleaning effect can be improved by the joint action of the two nozzles 421.

[0053] After unloading and cleaning, the tooling plate 200 and the electronic connector 100 continue to move along the conveyor line 3 until the tooling plate 200 exceeds the initial position of the unloading push plate 61 (the initial position of the unloading push plate 61 refers to the position of the unloading push plate 61 when the first unloading push cylinder 62 and the second unloading push cylinder 63 are both in a retracted state), the first unloading push cylinder 62 is actuated to push the unloading push plate 61 and the second unloading push cylinder 63 along the Y-axis direction to the conveyor line 3, and the second unloading push cylinder 63 is actuated to push the unloading push plate 61 along the X-axis direction until the tooling plate 200 and the electronic connector 100 push the second material blocking part 9 and are pushed onto the unloading storage rack 221 of the unloading bin 22. Before the unloading pushing plate 61 pushes the tooling plate 200, the operator places the empty storage bin 7 on the platform of the unloading lifting module 21 as a unloading bin. The unloading lifting module 21 drives the unloading bin 22 to rise and fall so that the height of each layer of unloading racks 221 corresponds to the conveyor line 3 in sequence, until each layer of unloading racks 221 is placed with tooling plates 200 and electronic connectors 100. The staff removes the unloading bin 22, installs the bin door 71, and completes the unloading.

[0054] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that the remaining undescribed portions are prior art, and that various changes made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. A dry ice cleaning machine, characterized in that: It includes a loading mechanism, a cleaning mechanism, an unloading mechanism and a conveyor line. On a horizontal plane, the conveying direction of the conveyor line is defined as the X-axis, and the direction perpendicular to the X-axis is defined as the Y-axis. The loading mechanism and the unloading mechanism are arranged at both ends of the conveyor line along the X-axis direction. The cleaning mechanism is arranged between the loading mechanism and the unloading mechanism for cleaning the workpieces on the conveyor line. The cleaning mechanism includes a dry ice machine, a spraying assembly and a waste adsorption assembly. The spraying assembly and the waste adsorption assembly are relatively arranged on both sides of the conveyor line along the Y-axis direction, so that the spraying assembly is used to spray dry ice to blow off the part to be removed of the workpiece and form waste at the part to be removed, and the waste adsorption assembly is used to adsorb the waste by negative pressure suction.

2. A dry ice cleaning machine according to claim 1, characterized in that: The spraying component includes a nozzle for spraying dry ice, and the waste adsorption component includes a suction nozzle and a shielding cover. The suction nozzle is used to suck the waste, and the nozzle is arranged opposite to the suction nozzle. The shielding cover is arranged above the nozzle and the suction nozzle to prevent the waste from splashing.

3. A dry ice cleaning machine according to claim 2, characterized in that: The shielding cover is a semi-enclosed structure.

4. The dry ice cleaning machine according to claim 2, characterized in that: There are two nozzles, which are arranged at intervals along the X-axis direction. There are two suction nozzles and two shielding covers, which are respectively arranged corresponding to the nozzles.

5. The dry ice cleaning machine according to claim 2, characterized in that: The conveying line comprises two parallel tracks with a gap between the two tracks, and a waste collection box is arranged below the conveying line.

6. The dry ice cleaning machine according to claim 1, characterized in that: The feeding mechanism includes a feeding lifting module and a feeding bin, and the direction perpendicular to the X-axis and the Y-axis is defined as the Z-axis. The feeding bin is provided with multiple layers of feeding racks arranged at intervals along the Z-axis, and each of the feeding racks is used to place a group of workpieces. The feeding lifting module is used to control the feeding bin to lift and lower along the Z-axis so that any of the feeding racks can be docked with the conveyor line. The unloading mechanism includes an unloading lifting module and an unloading bin. The unloading bin is provided with multiple layers of unloading racks arranged at intervals along the Z-axis direction. Each of the unloading racks is used to place a group of workpieces. The unloading lifting module is used to control the unloading bin to lift and lower along the Z-axis so that any of the unloading racks can be docked with the conveyor line.

7. The dry ice cleaning machine according to claim 6, characterized in that: It also includes a loading and pushing mechanism, which includes a loading and pushing plate and a loading and pushing cylinder, the loading and pushing cylinder is used to drive the loading and pushing plate to move along the X-axis direction, and the loading and pushing plate is used to extend into the loading bin to push the workpiece placed on the loading rack to the conveyor line; It also includes a material unloading pushing mechanism, which includes a material unloading pushing plate, a first material unloading pushing cylinder and a second material unloading pushing cylinder, the first material unloading pushing cylinder is connected to the second material unloading pushing cylinder, the second material unloading pushing cylinder is connected to the material unloading pushing plate, the first material unloading pushing cylinder is used to drive the second material unloading pushing cylinder and the material unloading pushing plate to move along the Y-axis direction, and the second material unloading pushing cylinder is used to drive the material unloading pushing plate to move along the X-axis direction to push the workpiece on the conveying line to the material unloading bin.

8. The dry ice cleaning machine according to claim 6, characterized in that: A flexible first material stopper is provided between the loading bin and the conveying line, and a flexible second material stopper is provided between the unloading bin and the conveying line. The first material stopper is used to prevent the waste from splashing into the loading bin, and the second material stopper is used to prevent the waste from splashing into the unloading bin.

9. The dry ice cleaning machine according to claim 6, characterized in that: The workpiece is an electronic connector, the part to be removed is a welding tip of a pin, and a plurality of the electronic connectors are placed on a tooling board at intervals along the X-axis direction to form a group.

10. The dry ice cleaning machine according to claim 6, characterized in that: The loading bin and the unloading bin are storage bins, each of which is provided with a bin door, and the loading lifting module and the unloading lifting module are respectively provided with a platform for placing the storage bin, so that the storage bin is placed on the platform and serves as the loading bin or the unloading bin.

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