Dry ice cleaning machine

Abstract

The utility model 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] This utility model relates to the field of mechanical equipment technology, specifically to a dry ice cleaning machine. Background Technology

[0002] Electronic connectors typically consist of a substrate and pins soldered onto the substrate. During soldering, the solder material is stretched due to the movement of the soldering head. After the solder material cools, it leaves behind a long, thin tip. During subsequent use, this tip may break under stress. In some precision products, the broken tip becomes an impurity, affecting product performance and hindering stable operation. Summary of the Invention

[0003] The purpose of this invention is to provide a dry ice cleaning machine to solve the problem of broken solder tips of electronic connectors affecting product performance.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: a dry ice cleaning machine, comprising a feeding mechanism, a cleaning mechanism, a discharging 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 feeding mechanism and the discharging mechanism are arranged at both ends of the conveyor line along the X-axis direction. The cleaning mechanism is disposed between the feeding mechanism and the discharging mechanism for cleaning the workpieces on the conveyor line. The cleaning mechanism includes a dry ice machine, a spraying component, and a waste adsorption component. The spraying component and the waste adsorption component are disposed opposite to each other on both sides of the conveyor line along the Y-axis direction. Thus, the spraying component is used to spray dry ice to break the part of the workpiece to be removed and make the part to be removed form waste. The waste adsorption component is used to adsorb the waste by negative pressure suction.

[0005] In one embodiment, the ejection assembly includes a nozzle for ejecting dry ice, and the waste adsorption assembly includes a suction nozzle and a shield. The suction nozzle is used to suck up the waste, the nozzle is disposed opposite to the suction nozzle, and the shield is disposed above the nozzle and the suction nozzle to prevent the waste from splashing.

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

[0007] In one embodiment, there are two nozzles, which are arranged at intervals along the X-axis. There are also two suction nozzles and two shields, which are respectively arranged corresponding to the nozzles.

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

[0009] In one embodiment, the feeding mechanism includes a feeding lifting module and a feeding bin. The direction perpendicular to the X-axis and 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. Each feeding rack is used to place a group of workpieces. The feeding lifting module is used to control the feeding bin to rise and fall along the Z-axis so that any feeding rack is connected to 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. Each unloading rack is used to place a group of workpieces. The unloading lifting module is used to control the unloading bin to move up and down along the Z-axis so that any unloading rack is connected to the conveyor line.

[0011] In one embodiment, the system further includes a feeding and pushing mechanism, which includes a feeding and pushing plate and a feeding and pushing cylinder. The feeding and pushing cylinder is used to drive the feeding and pushing plate to move along the X-axis direction. The feeding and pushing plate is used to extend into the feeding hopper to push the workpiece placed on the feeding rack to the conveyor line.

[0012] It also includes a feeding and pushing mechanism, which includes a feeding and pushing plate, a first feeding and pushing cylinder and a second feeding and pushing cylinder. The first feeding and pushing cylinder is connected to the second feeding and pushing cylinder, and the second feeding and pushing cylinder is connected to the feeding and pushing plate. The first feeding and pushing cylinder is used to drive the second feeding and pushing cylinder and the feeding and pushing plate to move along the Y-axis direction, and the second feeding and pushing cylinder is used to drive the feeding and pushing plate to move along the X-axis direction, so as to push the workpiece on the conveyor line to the feeding hopper.

[0013] In one embodiment, a flexible first baffle is provided between the feeding hopper and the conveyor line, and a flexible second baffle is provided between the unloading hopper and the conveyor line. The first baffle is used to prevent the waste material from splashing into the feeding hopper, and the second baffle is used to prevent the waste material from splashing into the unloading hopper.

[0014] In one embodiment, the workpiece is an electronic connector, the part to be removed is the solder tip of the pin, and a plurality of the electronic connectors are placed at intervals along the X-axis on a fixture plate to form a group.

[0015] In one embodiment, the loading hopper and the unloading hopper are storage hoppers, each with a door. The loading lifting module and the unloading lifting module are each equipped with a platform for placing the storage hopper, so that the storage hopper is placed on the platform and serves as either the loading hopper or the unloading hopper.

[0016] The beneficial effects of this utility model are:

[0017] 1. The spraying component of the cleaning mechanism of this utility model can spray dry ice to remove the parts of the workpiece to be removed, and collect the removed waste in the waste adsorption component by negative pressure suction to prevent waste from splashing and damaging the workpiece. In particular, for the soldering tips of electronic connector pins, the dry ice removes the tips to clean the workpiece, which can prevent them from breaking during subsequent use and affecting product performance, thus improving product reliability.

[0018] 2. The feeding and unloading mechanisms are set at both ends of the conveyor line along the X-axis, so that the workpiece is interrupted by the airflow of dry ice during the conveying process. The spraying component and the waste adsorption component are set opposite each other on both sides of the conveyor line along the Y-axis, so that the waste can be adsorbed and collected in the direction of the airflow (which is also the direction of movement of most waste). The layout is made full use of the space around the conveyor line, which makes the overall layout more reasonable and can also make the removal efficiency of the part of the workpiece to be removed higher.

[0019] 3. The shielding cover prevents waste from splashing everywhere under the action of dry ice airflow, avoiding the splashed waste from falling on the cleaned workpiece and affecting its subsequent performance.

[0020] 4. Two nozzles, two suction nozzles, and two shields form two sets of mechanisms for cleaning and collecting waste materials. For a single workpiece, it can be cleaned twice to prevent incomplete cleaning in one go and improve the cleaning pass rate.

[0021] 5. The feeding hopper is raised and lowered along the Z-axis to supply materials, and the unloading hopper is raised and lowered along the Z-axis to receive the cleaned workpieces. By utilizing the vertical space of this dry ice cleaning machine, the spatial layout of this dry ice cleaning machine is further optimized, while improving the efficiency of loading and unloading.

[0022] 6. The loading and unloading are driven by the loading pusher plate and the unloading pusher plate, respectively. The loading and unloading bins are equipped with multi-layer loading and unloading racks, which can realize automatic loading and unloading and reduce the workload of operators.

[0023] 7. The loading and unloading hoppers are formed by placing the storage hoppers on the platform. During the loading and unloading process, the storage hoppers can be placed directly on the platform, reducing the number of steps required to handle the workpieces and improving cleaning efficiency.

[0024] 8. The spraying component of the cleaning mechanism sprays out dry ice airflow, which can not only make the welding waste more brittle and blow it off by using its low temperature, but also blow other debris off the surface of the workpiece to achieve the purpose of thorough cleaning. Attached Figure Description

[0025] Figure 1 This is a perspective view of an embodiment of the present utility model.

[0026] Figure 2 This is a perspective view of the internal structure of an embodiment of the present utility model.

[0027] Figure 3 This is another perspective view of the internal structure of an embodiment of this utility model.

[0028] Figure 4 This is a three-dimensional structural view of the ejection component and waste adsorption component of this utility model embodiment.

[0029] Figure 5 This 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 This is a perspective view of the feeding mechanism in an embodiment of this utility model.

[0031] Figure 7 This is a perspective view of the feeding mechanism in an embodiment of this utility model.

[0032] Figure 8 This is a schematic diagram of the feeding state in an embodiment of this utility model.

[0033] The components include: 1. Feeding mechanism, 11. Feeding lifting module, 12. Feeding hopper, 121. Feeding rack, 2. Unloading mechanism, 21. Unloading lifting module, 22. Unloading hopper, 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 adjusting block, 424. Second adjusting block, 43. Waste adsorption assembly, 431. Suction nozzle, 432. Shielding cover, 433. Waste collection box, 4331. Waste hole, 5. Feeding and pushing mechanism, 51. Feeding and pushing plate, 52. Feeding and pushing cylinder, 6. Unloading and pushing mechanism, 61. Unloading and pushing plate, 62. First unloading and pushing cylinder, 63. Second unloading and pushing cylinder, 7. Storage hopper, 71. Hopper door, 8. First baffle, 9. Second baffle, 10. Frame housing, 100. Electronic connector, 101. Pin. Detailed Implementation

[0034] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and 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 drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0035] See Figures 1 to 8As shown, this utility model discloses a dry ice cleaning machine, including a feeding mechanism 1, a cleaning mechanism 4, a discharging mechanism 2, and a conveyor line 3. The feeding mechanism 1 and the discharging mechanism 2 are disposed outside the frame housing 10, and the cleaning mechanism 4 and the conveyor line 3 are disposed inside the frame housing 10. On the 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 discharging mechanism 2 are arranged at both ends of the conveyor line 3 along the X-axis direction. The cleaning mechanism 4 is disposed between the feeding mechanism 1 and the discharging mechanism 2 for cleaning the workpieces on the conveyor line 3. The cleaning mechanism 4 includes a dry ice machine 41, a spraying component 42, and a waste adsorption component 43. The spraying component 42 and the waste adsorption component 43 are arranged opposite to each other on both sides of the conveyor line 3 along the Y-axis direction. The spraying component 42 is used to spray dry ice to break the part of the workpiece to be removed and make the part to be removed into waste. The waste adsorption component 43 is used to adsorb the waste by negative pressure suction.

[0036] In this embodiment, the workpiece is an electronic connector 100, which has leads 101 soldered onto a substrate. The part to be removed is the tip formed during the lead soldering process. This tip is typically formed from solder. Under the action of dry ice, the solder temperature decreases and it becomes brittle. The dry ice gas flow can easily break it into granular waste, preventing the tip from breaking during subsequent use of the electronic connector and affecting the performance of products using the electronic connector. Especially for products with high precision requirements, broken and unremoved waste or other impurities can reduce the control accuracy of the product. Therefore, this invention can ensure product performance and improve product reliability by pre-blowing and removing easily breakable waste. In other embodiments, the workpiece can also be other products, such as metal welded parts with solder material tips that need to be removed.

[0037] See Figures 3 to 5As shown, the spraying assembly 42 includes a nozzle 421 for spraying dry ice. The nozzle 421 is mounted on a support rod 422 on one side of the conveyor line 3, and is connected to the support rod 422 via a first adjusting block 423 and a second adjusting block 424. The nozzle 421 is mounted on the first adjusting block 423, which is mounted on the second adjusting block 424 via a rotating shaft. The first adjusting block 423 and the second adjusting block 424 form a rotatable connection with a certain resistance, allowing the first adjusting block 423 to rotate relative to the second adjusting block 424 under torque and to be fixed relative to the second adjusting block 424 when not under torque, thereby adjusting the spray angle of the nozzle 421. The second adjusting block 424 is slidably mounted on the support rod 422. The connection between the second adjusting block 424 and the support rod 422 is relatively tight and has a certain resistance, allowing the second adjusting block 424 to slide along the support rod 422 when subjected to the force of the operator, and to 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 adjusting block 423 and the second adjusting block 424, the spray height and spray angle of the nozzle 421 can be adjusted to adapt to workpieces of different specifications.

[0038] The waste adsorption assembly 43 includes a suction nozzle 431 and a shield 432. The suction nozzle 431 is connected to a negative pressure suction machine for sucking up waste through negative pressure. A nozzle 421 is disposed opposite to the suction nozzle 431. The shield 432 is disposed 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 dry ice airflow. Such waste splashing can scratch the surface of the workpiece or remain in the dead corners of the workpiece. Therefore, the shield 432 disposed above the nozzle 421 and the suction nozzle 431 can reduce the range of waste splashing, which is beneficial for the suction nozzle 431 to adsorb it through negative pressure suction.

[0039] The space between nozzle 421 and suction nozzle 431 is for workpiece movement; therefore, the shield 432 has a limited shielding range. Excessive shielding range would affect workpiece movement. In this embodiment, shield 432 is configured as a semi-enclosed structure to prevent waste from splashing upwards. The conveyor line 3 includes two parallel tracks 30 with a gap between them. A waste collection box 433 is located below the conveyor line 3. Some waste not sucked in by suction nozzle 431 splashes downwards. The waste collection box 433 is positioned between the two tracks 30 of the conveyor line 3, utilizing the gap between the tracks 30 to further collect waste and reduce the difficulty of waste collection. Furthermore, the lower center of the waste collection box 433 facilitates waste movement to the center under gravity, allowing it to fall from the waste hole 4331 into a waste container (not shown in the figure). The waste container is also connected to the suction nozzle 431, so that waste sucked in by the suction nozzle 431 is collected in the waste container.

[0040] This invention uses dry ice airflow to break off the welding tips on the electronic connector 100. Under the combined action of the dry ice airflow and negative pressure suction, the broken welding tips are adsorbed and collected. At the same time, dust or other impurities adhering to the workpiece surface are also blown away by the airflow, achieving the purpose of cleaning the workpiece. To improve the reliability of workpiece cleaning, two nozzles 421 are provided, spaced apart along the X-axis. Two suction nozzles 431 and two shields 432 are also provided, corresponding to the nozzles 421. The two nozzles 421, two suction nozzles 431, and two shields 432 form two sets of mechanisms for cleaning and collecting waste materials. A single workpiece can be cleaned twice, preventing incomplete cleaning in one pass and improving the cleaning pass rate.

[0041] See Figures 1 to 8 As shown, the loading mechanism 1 includes a loading lifting module 11 and a loading bin 12. The direction perpendicular to the X and Y axes is defined as the Z-axis. The loading bin 12 has multiple layers of loading racks 121 arranged at intervals along the Z-axis. 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 and lower along the Z-axis so that any loading rack 121 is aligned with the conveyor line 3, so that the workpieces can be moved along the X-axis and transported to the conveyor line 3. The unloading mechanism 2 includes an unloading lifting module 21 and an unloading bin 22. The unloading bin 22 has multiple layers of unloading racks 221 arranged at intervals along the Z-axis. 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 and lower along the Z-axis so that any unloading rack 221 is aligned with the conveyor line 3, so that the workpieces on the conveyor line 3 can be moved along the X-axis and transported to the unloading rack 221.

[0042] The loading mechanism 1 and unloading mechanism 2 are positioned at both ends of the conveyor line 3 along the X-axis, causing the workpiece to be interrupted by the dry ice airflow during transport. The spraying component 42 and waste adsorption component 43 are positioned opposite each other on both sides of the conveyor line 3 along the Y-axis, so as to adsorb and collect the waste in the direction of the airflow (which is also the direction of movement of most waste). The layout is designed with the conveyor line 3 as the center, making full use of the surrounding space, resulting in a more reasonable overall layout and higher removal efficiency for the parts of the workpiece to be removed. The loading hopper 12 feeds the workpiece by lifting along the Z-axis, and the unloading hopper 22 receives the cleaned workpiece by lifting along the Z-axis. This utilizes the vertical space of the dry ice cleaning machine to further optimize its spatial layout and improve loading and unloading efficiency.

[0043] This dry ice cleaning machine also includes a feeding and pushing mechanism 5 and a discharging and pushing mechanism 6. The feeding and pushing mechanism 5 includes a feeding and pushing plate 51 and a feeding and pushing cylinder 52. The feeding and pushing cylinder 52 is used to drive the feeding and pushing plate 51 to move along the X-axis. The feeding and pushing plate 51 is used to extend into the feeding hopper 12 to push the workpiece placed on the feeding rack 121 onto the conveyor line. In this embodiment, multiple electronic connectors 100 are placed at intervals along the X-axis on the fixture plate 200 to form a group. Therefore, when the feeding and pushing plate 51 pushes the workpiece, it acts on the fixture plate 200, pushing the fixture plate 200 to push the multiple electronic connectors 100 in the group onto the conveyor line 3.

[0044] In this embodiment, the feeding pusher plate 51 extends into the feeding hopper 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 retraction of the feeding pusher cylinder 52. Combined with the lifting and lowering feeding of the feeding hopper 12, in this embodiment, the middle part of the feeding rack 121 should be set as a hollow structure so that the extension rods of the feeding pusher plate 51 and the feeding pusher cylinder 52 can pass through the lifting and lowering feeding rack 121.

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

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

[0047] In this embodiment, the loading bin 12 and unloading bin 22 have the same structure, both being storage bins 7. Each storage bin 7 has a door 71. The loading lifting module 11 and the unloading lifting module 21 each have a platform for placing the storage bin 7, thus the storage bin 7 is placed on the platform to serve as the loading bin 12 or the unloading bin 22. The loading bin 12 and the unloading bin 22 are formed by placing the storage bin 7 on the platform. During loading and unloading, the storage bin 7 can be directly placed on the platform, reducing the steps involved in handling the workpiece and improving cleaning efficiency. In other embodiments, the loading bin 12 and the unloading bin 22 can also be fixed bins respectively fixedly installed in the loading lifting module 11 and the unloading lifting module 21.

[0048] The loading lifting module 11 and unloading lifting module 21 are respectively rotational-to-linear motion modules composed of a motor and a lead screw mechanism. The lead screw mechanism converts the rotation of the motor into the linear lifting motion of the platform. This type of rotational-to-linear motion module is existing technology. Those skilled in the art can select the appropriate specifications according to their needs, and then connect the platform to the lead screw mechanism to lift and lower with the lead screw mechanism. Further details are omitted here.

[0049] See Figure 2 and Figure 3 As shown, a flexible first baffle 8 is provided between the loading hopper 12 and the conveyor line 3, and a flexible second baffle 9 is provided between the unloading hopper 22 and the conveyor line 3. The first baffle 8 is used to prevent waste material from splashing into the loading hopper 12, and the second baffle 9 is used to prevent waste material from splashing into the unloading hopper 22. The first baffle 8 and the second baffle 9 are both designed as flexible structures. On the one hand, they can droop under the action of gravity to form a baffle structure to prevent waste material from splashing into the loading hopper 12 or the unloading hopper 22. On the other hand, they can deform and make way under the pushing action of the tooling plate 200 or the loading pusher plate 51, so that the workpiece can be loaded and unloaded smoothly.

[0050] See Figures 1 to 8 As shown, the workflow of this utility model 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 bin door of the storage bin 7 is open. The loading pusher cylinder 52 drives the loading pusher plate 51 to extend into the end of the loading bin 12 away from the conveyor line 3. The loading lifting module 11 rises, causing the loading bin 12 to rise until the loading pusher plate 51 abuts against the end of the tooling plate 200 located on the uppermost loading shelf 121 away from the conveyor line 3. The loading pusher cylinder 52 retracts, causing the loading pusher plate 51 to move towards the conveyor line 3 until the tooling plate 200 and the electronic connector 100 push aside the first stop part 8 and are moved onto the conveyor line 3.

[0052] During the cleaning process, 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 assembly 42 and the suction nozzle 431 of the waste adsorption assembly 43. The dry ice machine 41 starts, and the nozzle 421 sprays dry ice gas onto the electronic connector 100, causing the solder tips of the pins 101 of the electronic connector 100 to cool and increase their brittleness. Under the action of the dry ice gas, they break to form waste. The waste is sucked into the suction nozzle 431 under negative pressure and enters the waste container through the negative pressure pipe. A portion that is not sucked into the suction nozzle 431 is drawn into the waste collection box 433 by gravity and falls into the waste container through the waste hole 4331 in the middle. During the cleaning process, the shield 432 prevents waste from splashing upwards. For waste splashing towards both ends, the first baffle 8 and the second baffle 9 prevent it from splashing upwards into the material bin 12 and downwards into the material bin 22. The tooling plate 200 and the electronic connector 100 move continuously along the conveyor line 3. The two nozzles 421 spray dry ice airflow onto the electronic connector 100 in turn. This not only breaks the solder tips of the pins 101 of the electronic connector 100, but also blows away impurities on the surface of the electronic connector 100, achieving the purpose of cleaning the electronic connector 100 with dry ice. The cleaning effect can also be improved by the combined 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 pusher plate 61 (the initial position of the unloading pusher plate 61 refers to the position of the unloading pusher plate 61 when the first unloading pusher cylinder 62 and the second unloading pusher cylinder 63 are both in the retracted state). The first unloading pusher cylinder 62 moves to push the unloading pusher plate 61 and the second unloading pusher cylinder 63 onto the conveyor line 3 along the Y-axis. The second unloading pusher cylinder 63 moves to push the unloading pusher plate 61 along the X-axis until the tooling plate 200 and the electronic connector 100 push aside the second baffle 9 and are pushed onto the unloading rack 221 of the unloading hopper 22. Before the unloading pusher 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 the unloading bin. The unloading lifting module 21 drives the unloading bin 22 to rise and fall so that the height of each unloading shelf 221 corresponds to the conveyor line 3 in turn, until each unloading shelf 221 is filled with tooling plate 200 and electronic connector 100. The operator 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 preferred embodiments, those skilled in the art should understand that the remaining undescribed parts are prior art, and that all changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A dry ice cleaning machine, characterized in that: The system includes a loading mechanism, a cleaning mechanism, a 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 and unloading mechanisms are arranged at both ends of the conveyor line along the X-axis. The cleaning mechanism is located between the loading and unloading mechanisms to clean 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 arranged opposite each other on both sides of the conveyor line along the Y-axis. The spraying assembly sprays dry ice to break off the parts of the workpiece to be removed, causing these parts to form waste. The waste adsorption assembly adsorbs the waste through negative pressure suction.

2. The dry ice cleaning machine according to claim 1, characterized in that: The ejection assembly includes a nozzle for ejecting dry ice, and the waste adsorption assembly includes a suction nozzle and a shield. The suction nozzle is used to suck up the waste, and the nozzle and the suction nozzle are arranged opposite to each other. The shield is placed over 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 shield is a semi-enclosed structure.

4. A dry ice cleaning machine according to claim 2, characterized in that: The nozzle is provided in two parts, which are arranged at intervals along the X-axis. There are two suction nozzles and two shields, which are respectively arranged corresponding to the nozzles.

5. A dry ice cleaning machine according to claim 2, characterized in that: The conveyor line includes two parallel tracks with a gap between them, and a waste collection box is provided below the conveyor line.

6. A dry ice cleaning machine according to claim 1, characterized in that: The feeding mechanism includes a feeding lifting module and a feeding bin. The direction perpendicular to the X-axis and 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. Each feeding rack 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 feeding rack is connected to 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. Each unloading rack is used to place a group of workpieces. The unloading lifting module is used to control the unloading bin to move up and down along the Z-axis so that any unloading rack is connected to the conveyor line.

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

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

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

10. A dry ice cleaning machine according to claim 6, characterized in that: The loading hopper and the unloading hopper are storage hoppers. The storage hoppers are equipped with hopper doors. The loading lifting module and the unloading lifting module are respectively equipped with platforms for placing the storage hoppers, so that the storage hoppers are placed on the platforms and serve as the loading hoppers or the unloading hoppers.

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